Diffstat (limited to 'core/multimedia/opieplayer/libmpeg3/audio') (more/less context) (ignore whitespace changes)
22 files changed, 8950 insertions, 0 deletions
diff --git a/core/multimedia/opieplayer/libmpeg3/audio/Makefile b/core/multimedia/opieplayer/libmpeg3/audio/Makefile new file mode 100644 index 0000000..eaa0e0b --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/Makefile @@ -0,0 +1,35 @@ +include ../global_config +export CFLAGS +export CFLAGS_lessopt + +OBJS = \ + ac3.o \ + bit_allocation.o \ + dct.o \ + exponents.o \ + header.o \ + layer2.o \ + layer3.o \ + mantissa.o \ + mpeg3audio.o \ + pcm.o \ + synthesizers.o \ + tables.o + +all: $(OBJS) + +dct.o: dct.c + $(CC) -c `./c_flags dct.c` -o $@ $< + +synthesizers.o: synthesizers.c + $(CC) -c `./c_flags synthesizers.c` -o $@ $< + + +.c.o: + $(CC) -c `./c_flags` -o $@ $< + +.s.o: + $(CC) -f elf $*.s + +clean: + rm -f *.o diff --git a/core/multimedia/opieplayer/libmpeg3/audio/ac3.c b/core/multimedia/opieplayer/libmpeg3/audio/ac3.c new file mode 100644 index 0000000..7a3b664 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/ac3.c @@ -0,0 +1,691 @@ +/* + * + * ac3.c Copyright (C) Aaron Holtzman - May 1999 + * + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" + +#include <math.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#define MPEG3AC3_MAGIC_NUMBER 0xdeadbeef + + +int mpeg3_ac3_samplerates[] = { 48000, 44100, 32000 }; + +struct mpeg3_framesize_s +{ + unsigned short bit_rate; + unsigned short frm_size[3]; +}; + +struct mpeg3_framesize_s framesize_codes[] = +{ + { 32 ,{64 ,69 ,96 } }, + { 32 ,{64 ,70 ,96 } }, + { 40 ,{80 ,87 ,120 } }, + { 40 ,{80 ,88 ,120 } }, + { 48 ,{96 ,104 ,144 } }, + { 48 ,{96 ,105 ,144 } }, + { 56 ,{112 ,121 ,168 } }, + { 56 ,{112 ,122 ,168 } }, + { 64 ,{128 ,139 ,192 } }, + { 64 ,{128 ,140 ,192 } }, + { 80 ,{160 ,174 ,240 } }, + { 80 ,{160 ,175 ,240 } }, + { 96 ,{192 ,208 ,288 } }, + { 96 ,{192 ,209 ,288 } }, + { 112 ,{224 ,243 ,336 } }, + { 112 ,{224 ,244 ,336 } }, + { 128 ,{256 ,278 ,384 } }, + { 128 ,{256 ,279 ,384 } }, + { 160 ,{320 ,348 ,480 } }, + { 160 ,{320 ,349 ,480 } }, + { 192 ,{384 ,417 ,576 } }, + { 192 ,{384 ,418 ,576 } }, + { 224 ,{448 ,487 ,672 } }, + { 224 ,{448 ,488 ,672 } }, + { 256 ,{512 ,557 ,768 } }, + { 256 ,{512 ,558 ,768 } }, + { 320 ,{640 ,696 ,960 } }, + { 320 ,{640 ,697 ,960 } }, + { 384 ,{768 ,835 ,1152 } }, + { 384 ,{768 ,836 ,1152 } }, + { 448 ,{896 ,975 ,1344 } }, + { 448 ,{896 ,976 ,1344 } }, + { 512 ,{1024 ,1114 ,1536 } }, + { 512 ,{1024 ,1115 ,1536 } }, + { 576 ,{1152 ,1253 ,1728 } }, + { 576 ,{1152 ,1254 ,1728 } }, + { 640 ,{1280 ,1393 ,1920 } }, + { 640 ,{1280 ,1394 ,1920 } } +}; + +/* Audio channel modes */ +short mpeg3_ac3_acmodes[] = {2, 1, 2, 3, 3, 4, 4, 5}; + +/* Rematrix tables */ +struct rematrix_band_s +{ + int start; + int end; +}; + +struct rematrix_band_s mpeg3_rematrix_band[] = +{ + {13, 24}, + {25, 36}, + {37, 60}, + {61, 252} +}; + +int mpeg3_min(int x, int y) +{ + return (x < y) ? x : y; +} + +int mpeg3_max(int x, int y) +{ + return (x > y) ? x : y; +} + +int mpeg3audio_read_ac3_header(mpeg3audio_t *audio) +{ + unsigned int code, crc; + unsigned int i; + mpeg3_ac3bsi_t *bsi = &(audio->ac3_bsi); + +/* Get the sync code */ + code = mpeg3bits_getbits(audio->astream, 16); + while(!mpeg3bits_eof(audio->astream) && code != MPEG3_AC3_START_CODE) + { + code <<= 8; + code &= 0xffff; + code |= mpeg3bits_getbits(audio->astream, 8); + } + + if(mpeg3bits_eof(audio->astream)) return 1; + +/* Get crc1 - we don't actually use this data though */ +/* The crc can be the same as the sync code or come after a sync code repeated twice */ + crc = mpeg3bits_getbits(audio->astream, 16); + +/* Got the sync code. Read the entire frame into a buffer if possible. */ + if(audio->avg_framesize > 0) + { + if(mpeg3bits_read_buffer(audio->astream, audio->ac3_buffer, audio->framesize - 4)) + return 1; + mpeg3bits_use_ptr(audio->astream, audio->ac3_buffer); + } + +/* Get the sampling rate code */ + audio->sampling_frequency_code = mpeg3bits_getbits(audio->astream, 2); + +/* Get the frame size code */ + audio->ac3_framesize_code = mpeg3bits_getbits(audio->astream, 6); + + audio->bitrate = framesize_codes[audio->ac3_framesize_code].bit_rate; + audio->avg_framesize = audio->framesize = 2 * framesize_codes[audio->ac3_framesize_code].frm_size[audio->sampling_frequency_code]; + +/* Check the AC-3 version number */ + bsi->bsid = mpeg3bits_getbits(audio->astream, 5); + +/* Get the audio service provided by the steram */ + bsi->bsmod = mpeg3bits_getbits(audio->astream, 3); + +/* Get the audio coding mode (ie how many channels)*/ + bsi->acmod = mpeg3bits_getbits(audio->astream, 3); + +/* Predecode the number of full bandwidth channels as we use this + * number a lot */ + bsi->nfchans = mpeg3_ac3_acmodes[bsi->acmod]; + audio->channels = bsi->nfchans; + +/* If it is in use, get the centre channel mix level */ + if((bsi->acmod & 0x1) && (bsi->acmod != 0x1)) + bsi->cmixlev = mpeg3bits_getbits(audio->astream, 2); + +/* If it is in use, get the surround channel mix level */ + if(bsi->acmod & 0x4) + bsi->surmixlev = mpeg3bits_getbits(audio->astream, 2); + +/* Get the dolby surround mode if in 2/0 mode */ + if(bsi->acmod == 0x2) + bsi->dsurmod= mpeg3bits_getbits(audio->astream, 2); + +/* Is the low frequency effects channel on? */ + bsi->lfeon = mpeg3bits_getbits(audio->astream, 1); + +/* Get the dialogue normalization level */ + bsi->dialnorm = mpeg3bits_getbits(audio->astream, 5); + +/* Does compression gain exist? */ + bsi->compre = mpeg3bits_getbits(audio->astream, 1); + if (bsi->compre) + { +/* Get compression gain */ + bsi->compr = mpeg3bits_getbits(audio->astream, 8); + } + +/* Does language code exist? */ + bsi->langcode = mpeg3bits_getbits(audio->astream, 1); + if (bsi->langcode) + { +/* Get langauge code */ + bsi->langcod = mpeg3bits_getbits(audio->astream, 8); + } + +/* Does audio production info exist? */ + bsi->audprodie = mpeg3bits_getbits(audio->astream, 1); + if (bsi->audprodie) + { +/* Get mix level */ + bsi->mixlevel = mpeg3bits_getbits(audio->astream, 5); + +/* Get room type */ + bsi->roomtyp = mpeg3bits_getbits(audio->astream, 2); + } + +/* If we're in dual mono mode then get some extra info */ + if (bsi->acmod == 0) + { +/* Get the dialogue normalization level two */ + bsi->dialnorm2 = mpeg3bits_getbits(audio->astream, 5); + +/* Does compression gain two exist? */ + bsi->compr2e = mpeg3bits_getbits(audio->astream, 1); + if (bsi->compr2e) + { +/* Get compression gain two */ + bsi->compr2 = mpeg3bits_getbits(audio->astream, 8); + } + +/* Does language code two exist? */ + bsi->langcod2e = mpeg3bits_getbits(audio->astream, 1); + if (bsi->langcod2e) + { +/* Get langauge code two */ + bsi->langcod2 = mpeg3bits_getbits(audio->astream, 8); + } + +/* Does audio production info two exist? */ + bsi->audprodi2e = mpeg3bits_getbits(audio->astream, 1); + if (bsi->audprodi2e) + { +/* Get mix level two */ + bsi->mixlevel2 = mpeg3bits_getbits(audio->astream, 5); + +/* Get room type two */ + bsi->roomtyp2 = mpeg3bits_getbits(audio->astream, 2); + } + } + +/* Get the copyright bit */ + bsi->copyrightb = mpeg3bits_getbits(audio->astream, 1); + +/* Get the original bit */ + bsi->origbs = mpeg3bits_getbits(audio->astream, 1); + +/* Does timecode one exist? */ + bsi->timecod1e = mpeg3bits_getbits(audio->astream, 1); + + if(bsi->timecod1e) + bsi->timecod1 = mpeg3bits_getbits(audio->astream, 14); + +/* Does timecode two exist? */ + bsi->timecod2e = mpeg3bits_getbits(audio->astream, 1); + + if(bsi->timecod2e) + bsi->timecod2 = mpeg3bits_getbits(audio->astream, 14); + +/* Does addition info exist? */ + bsi->addbsie = mpeg3bits_getbits(audio->astream, 1); + + if(bsi->addbsie) + { +/* Get how much info is there */ + bsi->addbsil = mpeg3bits_getbits(audio->astream, 6); + +/* Get the additional info */ + for(i = 0; i < (bsi->addbsil + 1); i++) + bsi->addbsi[i] = mpeg3bits_getbits(audio->astream, 8); + } + + if(mpeg3bits_eof(audio->astream)) + { + mpeg3bits_use_demuxer(audio->astream); + return 1; + } +// return mpeg3bits_error(audio->astream); +} + +int mpeg3audio_read_ac3_audblk(mpeg3audio_t *audio) +{ + int i, j; + mpeg3_ac3bsi_t *bsi = &(audio->ac3_bsi); + mpeg3_ac3audblk_t *audblk = &(audio->ac3_audblk); + + for(i = 0; i < bsi->nfchans; i++) + { +/* Is this channel an interleaved 256 + 256 block ? */ + audblk->blksw[i] = mpeg3bits_getbits(audio->astream, 1); + } + + for(i = 0; i < bsi->nfchans; i++) + { +/* Should we dither this channel? */ + audblk->dithflag[i] = mpeg3bits_getbits(audio->astream, 1); + } + +/* Does dynamic range control exist? */ + audblk->dynrnge = mpeg3bits_getbits(audio->astream, 1); + if(audblk->dynrnge) + { +/* Get dynamic range info */ + audblk->dynrng = mpeg3bits_getbits(audio->astream, 8); + } + +/* If we're in dual mono mode then get the second channel DR info */ + if(bsi->acmod == 0) + { +/* Does dynamic range control two exist? */ + audblk->dynrng2e = mpeg3bits_getbits(audio->astream, 1); + if (audblk->dynrng2e) + { +/* Get dynamic range info */ + audblk->dynrng2 = mpeg3bits_getbits(audio->astream, 8); + } + } + +/* Does coupling strategy exist? */ + audblk->cplstre = mpeg3bits_getbits(audio->astream, 1); + if(audblk->cplstre) + { +/* Is coupling turned on? */ + audblk->cplinu = mpeg3bits_getbits(audio->astream, 1); + if(audblk->cplinu) + { + for(i = 0; i < bsi->nfchans; i++) + audblk->chincpl[i] = mpeg3bits_getbits(audio->astream, 1); + + if(bsi->acmod == 0x2) + audblk->phsflginu = mpeg3bits_getbits(audio->astream, 1); + + audblk->cplbegf = mpeg3bits_getbits(audio->astream, 4); + audblk->cplendf = mpeg3bits_getbits(audio->astream, 4); + audblk->ncplsubnd = (audblk->cplendf + 2) - audblk->cplbegf + 1; + +/* Calculate the start and end bins of the coupling channel */ + audblk->cplstrtmant = (audblk->cplbegf * 12) + 37 ; + audblk->cplendmant = ((audblk->cplendf + 3) * 12) + 37; + +/* The number of combined subbands is ncplsubnd minus each combined band */ + audblk->ncplbnd = audblk->ncplsubnd; + + for(i = 1; i < audblk->ncplsubnd; i++) + { + audblk->cplbndstrc[i] = mpeg3bits_getbits(audio->astream, 1); + audblk->ncplbnd -= audblk->cplbndstrc[i]; + } + } + } + + if(audblk->cplinu) + { +/* Loop through all the channels and get their coupling co-ords */ + for(i = 0; i < bsi->nfchans; i++) + { + if(!audblk->chincpl[i]) + continue; + +/* Is there new coupling co-ordinate info? */ + audblk->cplcoe[i] = mpeg3bits_getbits(audio->astream, 1); + + if(audblk->cplcoe[i]) + { + audblk->mstrcplco[i] = mpeg3bits_getbits(audio->astream, 2); + for(j = 0; j < audblk->ncplbnd; j++) + { + audblk->cplcoexp[i][j] = mpeg3bits_getbits(audio->astream, 4); + audblk->cplcomant[i][j] = mpeg3bits_getbits(audio->astream, 4); + } + } + } + +/* If we're in dual mono mode, there's going to be some phase info */ + if((bsi->acmod == 0x2) && audblk->phsflginu && + (audblk->cplcoe[0] || audblk->cplcoe[1])) + { + for(j = 0; j < audblk->ncplbnd; j++) + { + audblk->phsflg[j] = mpeg3bits_getbits(audio->astream, 1); + } + } + } + +/* If we're in dual mono mode, there may be a rematrix strategy */ + if(bsi->acmod == 0x2) + { + audblk->rematstr = mpeg3bits_getbits(audio->astream, 1); + if(audblk->rematstr) + { + if (audblk->cplinu == 0) + { + for(i = 0; i < 4; i++) + audblk->rematflg[i] = mpeg3bits_getbits(audio->astream, 1); + } + if((audblk->cplbegf > 2) && audblk->cplinu) + { + for(i = 0; i < 4; i++) + audblk->rematflg[i] = mpeg3bits_getbits(audio->astream, 1); + } + if((audblk->cplbegf <= 2) && audblk->cplinu) + { + for(i = 0; i < 3; i++) + audblk->rematflg[i] = mpeg3bits_getbits(audio->astream, 1); + } + if((audblk->cplbegf == 0) && audblk->cplinu) + for(i = 0; i < 2; i++) + audblk->rematflg[i] = mpeg3bits_getbits(audio->astream, 1); + + } + } + + if (audblk->cplinu) + { +/* Get the coupling channel exponent strategy */ + audblk->cplexpstr = mpeg3bits_getbits(audio->astream, 2); + + if(audblk->cplexpstr == 0) + audblk->ncplgrps = 0; + else + audblk->ncplgrps = (audblk->cplendmant - audblk->cplstrtmant) / + (3 << (audblk->cplexpstr - 1)); + + } + + for(i = 0; i < bsi->nfchans; i++) + { + audblk->chexpstr[i] = mpeg3bits_getbits(audio->astream, 2); + } + +/* Get the exponent strategy for lfe channel */ + if(bsi->lfeon) + audblk->lfeexpstr = mpeg3bits_getbits(audio->astream, 1); + +/* Determine the bandwidths of all the fbw channels */ + for(i = 0; i < bsi->nfchans; i++) + { + unsigned short grp_size; + + if(audblk->chexpstr[i] != MPEG3_EXP_REUSE) + { + if (audblk->cplinu && audblk->chincpl[i]) + { + audblk->endmant[i] = audblk->cplstrtmant; + } + else + { + audblk->chbwcod[i] = mpeg3bits_getbits(audio->astream, 6); + audblk->endmant[i] = ((audblk->chbwcod[i] + 12) * 3) + 37; + } + +/* Calculate the number of exponent groups to fetch */ + grp_size = 3 * (1 << (audblk->chexpstr[i] - 1)); + audblk->nchgrps[i] = (audblk->endmant[i] - 1 + (grp_size - 3)) / grp_size; + } + } + +/* Get the coupling exponents if they exist */ + if(audblk->cplinu && (audblk->cplexpstr != MPEG3_EXP_REUSE)) + { + audblk->cplabsexp = mpeg3bits_getbits(audio->astream, 4); + for(i = 0; i< audblk->ncplgrps; i++) + audblk->cplexps[i] = mpeg3bits_getbits(audio->astream, 7); + } + +/* Get the fwb channel exponents */ + for(i = 0; i < bsi->nfchans; i++) + { + if(audblk->chexpstr[i] != MPEG3_EXP_REUSE) + { + audblk->exps[i][0] = mpeg3bits_getbits(audio->astream, 4); + for(j = 1; j <= audblk->nchgrps[i]; j++) + audblk->exps[i][j] = mpeg3bits_getbits(audio->astream, 7); + audblk->gainrng[i] = mpeg3bits_getbits(audio->astream, 2); + } + } + +/* Get the lfe channel exponents */ + if(bsi->lfeon && (audblk->lfeexpstr != MPEG3_EXP_REUSE)) + { + audblk->lfeexps[0] = mpeg3bits_getbits(audio->astream, 4); + audblk->lfeexps[1] = mpeg3bits_getbits(audio->astream, 7); + audblk->lfeexps[2] = mpeg3bits_getbits(audio->astream, 7); + } + +/* Get the parametric bit allocation parameters */ + audblk->baie = mpeg3bits_getbits(audio->astream, 1); + + if(audblk->baie) + { + audblk->sdcycod = mpeg3bits_getbits(audio->astream, 2); + audblk->fdcycod = mpeg3bits_getbits(audio->astream, 2); + audblk->sgaincod = mpeg3bits_getbits(audio->astream, 2); + audblk->dbpbcod = mpeg3bits_getbits(audio->astream, 2); + audblk->floorcod = mpeg3bits_getbits(audio->astream, 3); + } + + +/* Get the SNR off set info if it exists */ + audblk->snroffste = mpeg3bits_getbits(audio->astream, 1); + + if(audblk->snroffste) + { + audblk->csnroffst = mpeg3bits_getbits(audio->astream, 6); + + if(audblk->cplinu) + { + audblk->cplfsnroffst = mpeg3bits_getbits(audio->astream, 4); + audblk->cplfgaincod = mpeg3bits_getbits(audio->astream, 3); + } + + for(i = 0; i < bsi->nfchans; i++) + { + audblk->fsnroffst[i] = mpeg3bits_getbits(audio->astream, 4); + audblk->fgaincod[i] = mpeg3bits_getbits(audio->astream, 3); + } + if(bsi->lfeon) + { + + audblk->lfefsnroffst = mpeg3bits_getbits(audio->astream, 4); + audblk->lfefgaincod = mpeg3bits_getbits(audio->astream, 3); + } + } + +/* Get coupling leakage info if it exists */ + if(audblk->cplinu) + { + audblk->cplleake = mpeg3bits_getbits(audio->astream, 1); + + if(audblk->cplleake) + { + audblk->cplfleak = mpeg3bits_getbits(audio->astream, 3); + audblk->cplsleak = mpeg3bits_getbits(audio->astream, 3); + } + } + +/* Get the delta bit alloaction info */ + audblk->deltbaie = mpeg3bits_getbits(audio->astream, 1); + + if(audblk->deltbaie) + { + if(audblk->cplinu) + audblk->cpldeltbae = mpeg3bits_getbits(audio->astream, 2); + + for(i = 0; i < bsi->nfchans; i++) + audblk->deltbae[i] = mpeg3bits_getbits(audio->astream, 2); + + if (audblk->cplinu && (audblk->cpldeltbae == DELTA_BIT_NEW)) + { + audblk->cpldeltnseg = mpeg3bits_getbits(audio->astream, 3); + for(i = 0; i < audblk->cpldeltnseg + 1; i++) + { + audblk->cpldeltoffst[i] = mpeg3bits_getbits(audio->astream, 5); + audblk->cpldeltlen[i] = mpeg3bits_getbits(audio->astream, 4); + audblk->cpldeltba[i] = mpeg3bits_getbits(audio->astream, 3); + } + } + + for(i = 0; i < bsi->nfchans; i++) + { + if (audblk->deltbae[i] == DELTA_BIT_NEW) + { + audblk->deltnseg[i] = mpeg3bits_getbits(audio->astream, 3); + for(j = 0; j < audblk->deltnseg[i] + 1; j++) + { + audblk->deltoffst[i][j] = mpeg3bits_getbits(audio->astream, 5); + audblk->deltlen[i][j] = mpeg3bits_getbits(audio->astream, 4); + audblk->deltba[i][j] = mpeg3bits_getbits(audio->astream, 3); + } + } + } + } + +/* Check to see if there's any dummy info to get */ + if((audblk->skiple = mpeg3bits_getbits(audio->astream, 1))) + { + unsigned int skip_data; + audblk->skipl = mpeg3bits_getbits(audio->astream, 9); + for(i = 0; i < audblk->skipl ; i++) + { + skip_data = mpeg3bits_getbits(audio->astream, 8); + } + } + + return mpeg3bits_error(audio->astream); +} + + +/* This routine simply does stereo rematrixing for the 2 channel + * stereo mode */ +int mpeg3audio_ac3_rematrix(mpeg3_ac3audblk_t *audblk, + mpeg3ac3_stream_samples_t samples) +{ + int num_bands; + int start; + int end; + int i, j; + mpeg3_real_t left, right; + + if(audblk->cplinu || audblk->cplbegf > 2) + num_bands = 4; + else if (audblk->cplbegf > 0) + num_bands = 3; + else + num_bands = 2; + + for(i = 0; i < num_bands; i++) + { + if(!audblk->rematflg[i]) + continue; + + start = mpeg3_rematrix_band[i].start; + end = mpeg3_min(mpeg3_rematrix_band[i].end, 12 * audblk->cplbegf + 36); + + for(j = start; j < end; j++) + { + left = samples[0][j] + samples[1][j]; + right = samples[0][j] - samples[1][j]; + samples[0][j] = left; + samples[1][j] = right; + } + } + return 0; +} + + +int mpeg3audio_ac3_reset_frame(mpeg3audio_t *audio) +{ + memset(&audio->ac3_bit_allocation, 0, sizeof(mpeg3_ac3_bitallocation_t)); + memset(&audio->ac3_mantissa, 0, sizeof(mpeg3_ac3_mantissa_t)); + memset(&audio->ac3_audblk, 0, sizeof(mpeg3_ac3audblk_t)); + + return 0; +} + +int mpeg3audio_do_ac3(mpeg3audio_t *audio) +{ + int result = 0, i; + +/* Reset the coefficients and exponents */ + mpeg3audio_ac3_reset_frame(audio); + + for(i = 0; i < 6 && !result; i++) + { + memset(audio->ac3_samples, 0, sizeof(mpeg3_real_t) * 256 * (audio->ac3_bsi.nfchans + audio->ac3_bsi.lfeon)); +/* Extract most of the audblk info from the bitstream + * (minus the mantissas */ + result |= mpeg3audio_read_ac3_audblk(audio); + +/* Take the differential exponent data and turn it into + * absolute exponents */ + if(!result) result |= mpeg3audio_ac3_exponent_unpack(audio, + &(audio->ac3_bsi), + &(audio->ac3_audblk)); + +/* Figure out how many bits per mantissa */ + if(!result) result |= mpeg3audio_ac3_bit_allocate(audio, + audio->sampling_frequency_code, + &(audio->ac3_bsi), + &(audio->ac3_audblk)); + +/* Extract the mantissas from the data stream */ + if(!result) result |= mpeg3audio_ac3_coeff_unpack(audio, + &(audio->ac3_bsi), + &(audio->ac3_audblk), + audio->ac3_samples); + + if(audio->ac3_bsi.acmod == 0x2) + if(!result) result |= mpeg3audio_ac3_rematrix(&(audio->ac3_audblk), + audio->ac3_samples); + +/* Convert the frequency data into time samples */ + if(!result) result |= mpeg3audio_ac3_imdct(audio, + &(audio->ac3_bsi), + &(audio->ac3_audblk), + audio->ac3_samples); + + if(audio->pcm_point / audio->channels >= audio->pcm_allocated - MPEG3AUDIO_PADDING * audio->channels) + { +/* Need more room */ + mpeg3audio_replace_buffer(audio, audio->pcm_allocated + MPEG3AUDIO_PADDING * audio->channels); + } + } + + mpeg3bits_use_demuxer(audio->astream); + + return result; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/ac3.h b/core/multimedia/opieplayer/libmpeg3/audio/ac3.h new file mode 100644 index 0000000..9161c36 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/ac3.h @@ -0,0 +1,308 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef AC3_H +#define AC3_H + +#include "mpeg3real.h" + +#define MAX_AC3_FRAMESIZE 1920 * 2 + 512 + +extern int mpeg3_ac3_samplerates[3]; + +/* Exponent strategy constants */ +#define MPEG3_EXP_REUSE (0) +#define MPEG3_EXP_D15 (1) +#define MPEG3_EXP_D25 (2) +#define MPEG3_EXP_D45 (3) + +/* Delta bit allocation constants */ +#define DELTA_BIT_REUSE (0) +#define DELTA_BIT_NEW (1) +#define DELTA_BIT_NONE (2) +#define DELTA_BIT_RESERVED (3) + + +typedef mpeg3_real_t mpeg3ac3_stream_samples_t[6][256]; + +typedef struct +{ +/* Bit stream identification == 0x8 */ + int bsid; +/* Bit stream mode */ + int bsmod; +/* Audio coding mode */ + int acmod; +/* If we're using the centre channel then */ +/* centre mix level */ + int cmixlev; +/* If we're using the surround channel then */ +/* surround mix level */ + int surmixlev; +/* If we're in 2/0 mode then */ +/* Dolby surround mix level - NOT USED - */ + int dsurmod; +/* Low frequency effects on */ + int lfeon; +/* Dialogue Normalization level */ + int dialnorm; +/* Compression exists */ + int compre; +/* Compression level */ + int compr; +/* Language code exists */ + int langcode; +/* Language code */ + int langcod; +/* Audio production info exists*/ + unsigned int audprodie; + int mixlevel; + int roomtyp; +/* If we're in dual mono mode (acmod == 0) then extra stuff */ + int dialnorm2; + int compr2e; + int compr2; + int langcod2e; + int langcod2; + int audprodi2e; + int mixlevel2; + int roomtyp2; +/* Copyright bit */ + int copyrightb; +/* Original bit */ + int origbs; +/* Timecode 1 exists */ + int timecod1e; +/* Timecode 1 */ + unsigned int timecod1; +/* Timecode 2 exists */ + int timecod2e; +/* Timecode 2 */ + unsigned int timecod2; +/* Additional bit stream info exists */ + int addbsie; +/* Additional bit stream length - 1 (in bytes) */ + int addbsil; +/* Additional bit stream information (max 64 bytes) */ + unsigned char addbsi[64]; + +/* Information not in the AC-3 bitstream, but derived */ +/* Number of channels (excluding LFE) + * Derived from acmod */ + int nfchans; +} mpeg3_ac3bsi_t; + +typedef struct +{ +/* block switch bit indexed by channel num */ + unsigned short blksw[5]; +/* dither enable bit indexed by channel num */ + unsigned short dithflag[5]; +/* dynamic range gain exists */ + int dynrnge; +/* dynamic range gain */ + int dynrng; +/* if acmod==0 then */ +/* dynamic range 2 gain exists */ + int dynrng2e; +/* dynamic range 2 gain */ + int dynrng2; +/* coupling strategy exists */ + int cplstre; +/* coupling in use */ + int cplinu; +/* channel coupled */ + unsigned short chincpl[5]; +/* if acmod==2 then */ +/* Phase flags in use */ + int phsflginu; +/* coupling begin frequency code */ + int cplbegf; +/* coupling end frequency code */ + int cplendf; +/* coupling band structure bits */ + unsigned short cplbndstrc[18]; +/* Do coupling co-ords exist for this channel? */ + unsigned short cplcoe[5]; +/* Master coupling co-ordinate */ + unsigned short mstrcplco[5]; +/* Per coupling band coupling co-ordinates */ + unsigned short cplcoexp[5][18]; + unsigned short cplcomant[5][18]; +/* Phase flags for dual mono */ + unsigned short phsflg[18]; +/* Is there a rematrixing strategy */ + unsigned int rematstr; +/* Rematrixing bits */ + unsigned short rematflg[4]; +/* Coupling exponent strategy */ + int cplexpstr; +/* Exponent strategy for full bandwidth channels */ + unsigned short chexpstr[5]; +/* Exponent strategy for lfe channel */ + int lfeexpstr; +/* Channel bandwidth for independent channels */ + unsigned short chbwcod[5]; +/* The absolute coupling exponent */ + int cplabsexp; +/* Coupling channel exponents (D15 mode gives 18 * 12 /3 encoded exponents */ + unsigned short cplexps[18 * 12 / 3]; +/* fbw channel exponents */ + unsigned short exps[5][252 / 3]; +/* channel gain range */ + unsigned short gainrng[5]; +/* low frequency exponents */ + unsigned short lfeexps[3]; + +/* Bit allocation info */ + int baie; +/* Slow decay code */ + int sdcycod; +/* Fast decay code */ + int fdcycod; +/* Slow gain code */ + int sgaincod; +/* dB per bit code */ + int dbpbcod; +/* masking floor code */ + int floorcod; + +/* SNR offset info */ + int snroffste; +/* coarse SNR offset */ + int csnroffst; +/* coupling fine SNR offset */ + int cplfsnroffst; +/* coupling fast gain code */ + int cplfgaincod; +/* fbw fine SNR offset */ + unsigned short fsnroffst[5]; +/* fbw fast gain code */ + unsigned short fgaincod[5]; +/* lfe fine SNR offset */ + int lfefsnroffst; +/* lfe fast gain code */ + int lfefgaincod; + +/* Coupling leak info */ + int cplleake; +/* coupling fast leak initialization */ + int cplfleak; +/* coupling slow leak initialization */ + int cplsleak; + +/* delta bit allocation info */ + int deltbaie; +/* coupling delta bit allocation exists */ + int cpldeltbae; +/* fbw delta bit allocation exists */ + unsigned short deltbae[5]; +/* number of cpl delta bit segments */ + int cpldeltnseg; +/* coupling delta bit allocation offset */ + short cpldeltoffst[8]; +/* coupling delta bit allocation length */ + short cpldeltlen[8]; +/* coupling delta bit allocation length */ + short cpldeltba[8]; +/* number of delta bit segments */ + unsigned short deltnseg[5]; +/* fbw delta bit allocation offset */ + short deltoffst[5][8]; +/* fbw delta bit allocation length */ + short deltlen[5][8]; +/* fbw delta bit allocation length */ + short deltba[5][8]; + +/* skip length exists */ + int skiple; +/* skip length */ + int skipl; + +/* channel mantissas */ + short chmant[5][256]; + +/* coupling mantissas */ + unsigned short cplmant[256]; + +/* coupling mantissas */ + unsigned short lfemant[7]; + +/* -- Information not in the bitstream, but derived thereof -- */ + +/* Number of coupling sub-bands */ + int ncplsubnd; + +/* Number of combined coupling sub-bands + * Derived from ncplsubnd and cplbndstrc */ + int ncplbnd; + +/* Number of exponent groups by channel + * Derived from strmant, endmant */ + int nchgrps[5]; + +/* Number of coupling exponent groups + * Derived from cplbegf, cplendf, cplexpstr */ + int ncplgrps; + +/* End mantissa numbers of fbw channels */ + unsigned short endmant[5]; + +/* Start and end mantissa numbers for the coupling channel */ + int cplstrtmant; + int cplendmant; + +/* Decoded exponent info */ + unsigned short fbw_exp[5][256]; + unsigned short cpl_exp[256]; + unsigned short lfe_exp[7]; + +/* Bit allocation pointer results */ + short fbw_bap[5][256]; +/*FIXME figure out exactly how many entries there should be (253-37?) */ + short cpl_bap[256]; + short lfe_bap[7]; +} mpeg3_ac3audblk_t; + +/* Bit allocation data */ +typedef struct +{ + int sdecay; + int fdecay; + int sgain; + int dbknee; + int floor; + short psd[256]; + short bndpsd[256]; + short excite[256]; + short mask[256]; +} mpeg3_ac3_bitallocation_t; + +/* Mantissa data */ +typedef struct +{ + unsigned short m_1[3]; + unsigned short m_2[3]; + unsigned short m_4[2]; + unsigned short m_1_pointer; + unsigned short m_2_pointer; + unsigned short m_4_pointer; +} mpeg3_ac3_mantissa_t; + +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/bit_allocation.c b/core/multimedia/opieplayer/libmpeg3/audio/bit_allocation.c new file mode 100644 index 0000000..29df7d7 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/bit_allocation.c @@ -0,0 +1,586 @@ +/* + * + * Copyright (C) Aaron Holtzman - May 1999 + * + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include <string.h> +#include <stdlib.h> + +/* Bit allocation tables */ + +static short mpeg3_slowdec[] = { 0x0f, 0x11, 0x13, 0x15 }; +static short mpeg3_fastdec[] = { 0x3f, 0x53, 0x67, 0x7b }; +static short mpeg3_slowgain[] = { 0x540, 0x4d8, 0x478, 0x410 }; +static short mpeg3_dbpbtab[] = { 0x000, 0x700, 0x900, 0xb00 }; + +static unsigned short mpeg3_floortab[] = { 0x2f0, 0x2b0, 0x270, 0x230, 0x1f0, 0x170, 0x0f0, 0xf800 }; +static short mpeg3_fastgain[] = { 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x400 }; + + +static short mpeg3_bndtab[] = +{ + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + 20, 21, 22, 23, 24, 25, 26, 27, 28, 31, + 34, 37, 40, 43, 46, 49, 55, 61, 67, 73, + 79, 85, 97, 109, 121, 133, 157, 181, 205, 229 +}; + +static short mpeg3_bndsz[] = +{ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, + 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, + 6, 12, 12, 12, 12, 24, 24, 24, 24, 24 +}; + +static short mpeg3_masktab[] = +{ + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 28, 28, 29, + 29, 29, 30, 30, 30, 31, 31, 31, 32, 32, 32, 33, 33, 33, 34, 34, + 34, 35, 35, 35, 35, 35, 35, 36, 36, 36, 36, 36, 36, 37, 37, 37, + 37, 37, 37, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 40, + 40, 40, 40, 40, 40, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, + 41, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 43, 43, 43, + 43, 43, 43, 43, 43, 43, 43, 43, 43, 44, 44, 44, 44, 44, 44, 44, + 44, 44, 44, 44, 44, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 46, 46, 46, + 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, + 46, 46, 46, 46, 46, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, + 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 48, 48, 48, + 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, + 48, 48, 48, 48, 48, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, + 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 0, 0, 0 +}; + + +static short mpeg3_latab[] = +{ + 0x0040, 0x003f, 0x003e, 0x003d, 0x003c, 0x003b, 0x003a, 0x0039, + 0x0038, 0x0037, 0x0036, 0x0035, 0x0034, 0x0034, 0x0033, 0x0032, + 0x0031, 0x0030, 0x002f, 0x002f, 0x002e, 0x002d, 0x002c, 0x002c, + 0x002b, 0x002a, 0x0029, 0x0029, 0x0028, 0x0027, 0x0026, 0x0026, + 0x0025, 0x0024, 0x0024, 0x0023, 0x0023, 0x0022, 0x0021, 0x0021, + 0x0020, 0x0020, 0x001f, 0x001e, 0x001e, 0x001d, 0x001d, 0x001c, + 0x001c, 0x001b, 0x001b, 0x001a, 0x001a, 0x0019, 0x0019, 0x0018, + 0x0018, 0x0017, 0x0017, 0x0016, 0x0016, 0x0015, 0x0015, 0x0015, + 0x0014, 0x0014, 0x0013, 0x0013, 0x0013, 0x0012, 0x0012, 0x0012, + 0x0011, 0x0011, 0x0011, 0x0010, 0x0010, 0x0010, 0x000f, 0x000f, + 0x000f, 0x000e, 0x000e, 0x000e, 0x000d, 0x000d, 0x000d, 0x000d, + 0x000c, 0x000c, 0x000c, 0x000c, 0x000b, 0x000b, 0x000b, 0x000b, + 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x0009, 0x0009, 0x0009, + 0x0009, 0x0009, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, + 0x0007, 0x0007, 0x0007, 0x0007, 0x0007, 0x0007, 0x0006, 0x0006, + 0x0006, 0x0006, 0x0006, 0x0006, 0x0006, 0x0006, 0x0005, 0x0005, + 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0005, 0x0004, 0x0004, + 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, 0x0004, + 0x0004, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, + 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0002, + 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, + 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, + 0x0002, 0x0002, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, + 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, + 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, + 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, + 0x0001, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000 +}; + +static short mpeg3_hth[][50] = +{ + { + 0x04d0, 0x04d0, 0x0440, 0x0400, 0x03e0, 0x03c0, 0x03b0, 0x03b0, + 0x03a0, 0x03a0, 0x03a0, 0x03a0, 0x03a0, 0x0390, 0x0390, 0x0390, + 0x0380, 0x0380, 0x0370, 0x0370, 0x0360, 0x0360, 0x0350, 0x0350, + 0x0340, 0x0340, 0x0330, 0x0320, 0x0310, 0x0300, 0x02f0, 0x02f0, + 0x02f0, 0x02f0, 0x0300, 0x0310, 0x0340, 0x0390, 0x03e0, 0x0420, + 0x0460, 0x0490, 0x04a0, 0x0460, 0x0440, 0x0440, 0x0520, 0x0800, + 0x0840, 0x0840 + }, + + { + 0x04f0, 0x04f0, 0x0460, 0x0410, 0x03e0, 0x03d0, 0x03c0, 0x03b0, + 0x03b0, 0x03a0, 0x03a0, 0x03a0, 0x03a0, 0x03a0, 0x0390, 0x0390, + 0x0390, 0x0380, 0x0380, 0x0380, 0x0370, 0x0370, 0x0360, 0x0360, + 0x0350, 0x0350, 0x0340, 0x0340, 0x0320, 0x0310, 0x0300, 0x02f0, + 0x02f0, 0x02f0, 0x02f0, 0x0300, 0x0320, 0x0350, 0x0390, 0x03e0, + 0x0420, 0x0450, 0x04a0, 0x0490, 0x0460, 0x0440, 0x0480, 0x0630, + 0x0840, 0x0840 + }, + + { + 0x0580, 0x0580, 0x04b0, 0x0450, 0x0420, 0x03f0, 0x03e0, 0x03d0, + 0x03c0, 0x03b0, 0x03b0, 0x03b0, 0x03a0, 0x03a0, 0x03a0, 0x03a0, + 0x03a0, 0x03a0, 0x03a0, 0x03a0, 0x0390, 0x0390, 0x0390, 0x0390, + 0x0380, 0x0380, 0x0380, 0x0370, 0x0360, 0x0350, 0x0340, 0x0330, + 0x0320, 0x0310, 0x0300, 0x02f0, 0x02f0, 0x02f0, 0x0300, 0x0310, + 0x0330, 0x0350, 0x03c0, 0x0410, 0x0470, 0x04a0, 0x0460, 0x0440, + 0x0450, 0x04e0 + } +}; + + +static short mpeg3_baptab[] = +{ + 0, 1, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 5, 5, 6, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, + 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, + 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15 +}; + + +inline int logadd(int a, int b) +{ + int c; + int address; + + c = a - b; + address = mpeg3_min((abs(c) >> 1), 255); + + if(c >= 0) + return(a + mpeg3_latab[address]); + else + return(b + mpeg3_latab[address]); +} + + +int mpeg3audio_ac3_calc_lowcomp(int a, int b0, int b1, int bin) +{ + if(bin < 7) + { + if((b0 + 256) == b1) + a = 384; + else + if(b0 > b1) + a = mpeg3_max(0, a - 64); + } + else if(bin < 20) + { + if((b0 + 256) == b1) + a = 320; + else if(b0 > b1) + a = mpeg3_max(0, a - 64) ; + } + else + a = mpeg3_max(0, a - 128); + + return(a); +} + +void mpeg3audio_ac3_ba_compute_psd(int start, + int end, + unsigned short exps[], + short psd[], + short bndpsd[]) +{ + int bin,i,j,k; + int lastbin = 0; + +/* Map the exponents into dBs */ + for (bin = start; bin < end; bin++) + { + psd[bin] = (3072 - (exps[bin] << 7)); + } + +/* Integrate the psd function over each bit allocation band */ + j = start; + k = mpeg3_masktab[start]; + + do + { + lastbin = mpeg3_min(mpeg3_bndtab[k] + mpeg3_bndsz[k], end); + bndpsd[k] = psd[j]; + j++; + + for(i = j; i < lastbin; i++) + { + bndpsd[k] = logadd(bndpsd[k], psd[j]); + j++; + } + + k++; + }while(end > lastbin); +} + +void mpeg3audio_ac3_ba_compute_excitation(mpeg3audio_t *audio, + int start, + int end, + int fgain, + int fastleak, + int slowleak, + int is_lfe, + short bndpsd[], + short excite[]) +{ + int bin; + int bndstrt; + int bndend; + int lowcomp = 0; + int begin = 0; + +/* Compute excitation function */ + bndstrt = mpeg3_masktab[start]; + bndend = mpeg3_masktab[end - 1] + 1; + + if(bndstrt == 0) /* For fbw and lfe channels */ + { + lowcomp = mpeg3audio_ac3_calc_lowcomp(lowcomp, bndpsd[0], bndpsd[1], 0); + excite[0] = bndpsd[0] - fgain - lowcomp; + lowcomp = mpeg3audio_ac3_calc_lowcomp(lowcomp, bndpsd[1], bndpsd[2], 1); + excite[1] = bndpsd[1] - fgain - lowcomp; + begin = 7 ; + +/* Note: Do not call mpeg3audio_ac3_calc_lowcomp() for the last band of the lfe channel, (bin = 6) */ + for (bin = 2; bin < 7; bin++) + { + if(!(is_lfe && (bin == 6))) + lowcomp = mpeg3audio_ac3_calc_lowcomp(lowcomp, bndpsd[bin], bndpsd[bin+1], bin); + fastleak = bndpsd[bin] - fgain; + slowleak = bndpsd[bin] - audio->ac3_bit_allocation.sgain; + excite[bin] = fastleak - lowcomp; + + if(!(is_lfe && (bin == 6))) + { + if(bndpsd[bin] <= bndpsd[bin+1]) + { + begin = bin + 1 ; + break; + } + } + } + + for (bin = begin; bin < mpeg3_min(bndend, 22); bin++) + { + if (!(is_lfe && (bin == 6))) + lowcomp = mpeg3audio_ac3_calc_lowcomp(lowcomp, bndpsd[bin], bndpsd[bin+1], bin); + fastleak -= audio->ac3_bit_allocation.fdecay; + fastleak = mpeg3_max(fastleak, bndpsd[bin] - fgain); + slowleak -= audio->ac3_bit_allocation.sdecay; + slowleak = mpeg3_max(slowleak, bndpsd[bin] - audio->ac3_bit_allocation.sgain); + excite[bin] = mpeg3_max(fastleak - lowcomp, slowleak); + } + begin = 22; + } + else /* For coupling channel */ + { + begin = bndstrt; + } + + for (bin = begin; bin < bndend; bin++) + { + fastleak -= audio->ac3_bit_allocation.fdecay; + fastleak = mpeg3_max(fastleak, bndpsd[bin] - fgain); + slowleak -= audio->ac3_bit_allocation.sdecay; + slowleak = mpeg3_max(slowleak, bndpsd[bin] - audio->ac3_bit_allocation.sgain); + excite[bin] = mpeg3_max(fastleak, slowleak) ; + } +} + +void mpeg3audio_ac3_ba_compute_mask(mpeg3audio_t *audio, + int start, + int end, + int fscod, + int deltbae, + int deltnseg, + short deltoffst[], + short deltba[], + short deltlen[], + short excite[], + short mask[]) +{ + int bin, k; + int bndstrt; + int bndend; + int delta; + + bndstrt = mpeg3_masktab[start]; + bndend = mpeg3_masktab[end - 1] + 1; + +/* Compute the masking curve */ + + for (bin = bndstrt; bin < bndend; bin++) + { + if (audio->ac3_bit_allocation.bndpsd[bin] < audio->ac3_bit_allocation.dbknee) + { + excite[bin] += ((audio->ac3_bit_allocation.dbknee - audio->ac3_bit_allocation.bndpsd[bin]) >> 2); + } + mask[bin] = mpeg3_max(excite[bin], mpeg3_hth[fscod][bin]); + } + +/* Perform delta bit modulation if necessary */ + if ((deltbae == DELTA_BIT_REUSE) || (deltbae == DELTA_BIT_NEW)) + { + int band = 0; + int seg = 0; + + for (seg = 0; seg < deltnseg + 1; seg++) + { + band += deltoffst[seg]; + if (deltba[seg] >= 4) + { + delta = (deltba[seg] - 3) << 7; + } + else + { + delta = (deltba[seg] - 4) << 7; + } + + for (k = 0; k < deltlen[seg]; k++) + { + mask[band] += delta; + band++; + } + } + } +} + +void mpeg3audio_ac3_ba_compute_bap(mpeg3audio_t *audio, + int start, + int end, + int snroffset, + short psd[], + short mask[], + short bap[]) +{ + int i, j, k; + short lastbin = 0; + short address = 0; + +/* Compute the bit allocation pointer for each bin */ + i = start; + j = mpeg3_masktab[start]; + + do + { + lastbin = mpeg3_min(mpeg3_bndtab[j] + mpeg3_bndsz[j], end); + mask[j] -= snroffset; + mask[j] -= audio->ac3_bit_allocation.floor; + + if(mask[j] < 0) + mask[j] = 0; + + mask[j] &= 0x1fe0; + mask[j] += audio->ac3_bit_allocation.floor; + for(k = i; k < lastbin; k++) + { + address = (psd[i] - mask[j]) >> 5; + address = mpeg3_min(63, mpeg3_max(0, address)); + bap[i] = mpeg3_baptab[address]; + i++; + } + j++; + }while (end > lastbin); +} + +int mpeg3audio_ac3_bit_allocate(mpeg3audio_t *audio, + unsigned int fscod, + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk) +{ + int result = 0; + int i; + int fgain; + int snroffset; + int start; + int end; + int fastleak; + int slowleak; + +/*printf("mpeg3audio_ac3_bit_allocate %d %d %d %d %d\n", audblk->sdcycod, audblk->fdcycod, audblk->sgaincod, audblk->dbpbcod, audblk->floorcod); */ +/* Only perform bit_allocation if the exponents have changed or we + * have new sideband information */ + if(audblk->chexpstr[0] == 0 && audblk->chexpstr[1] == 0 && + audblk->chexpstr[2] == 0 && audblk->chexpstr[3] == 0 && + audblk->chexpstr[4] == 0 && audblk->cplexpstr == 0 && + audblk->lfeexpstr == 0 && audblk->baie == 0 && + audblk->snroffste == 0 && audblk->deltbaie == 0) + return 0; + +/* Do some setup before we do the bit alloc */ + audio->ac3_bit_allocation.sdecay = mpeg3_slowdec[audblk->sdcycod]; + audio->ac3_bit_allocation.fdecay = mpeg3_fastdec[audblk->fdcycod]; + audio->ac3_bit_allocation.sgain = mpeg3_slowgain[audblk->sgaincod]; + audio->ac3_bit_allocation.dbknee = mpeg3_dbpbtab[audblk->dbpbcod]; + audio->ac3_bit_allocation.floor = mpeg3_floortab[audblk->floorcod]; + +/* if all the SNR offset constants are zero then the whole block is zero */ + if(!audblk->csnroffst && !audblk->fsnroffst[0] && + !audblk->fsnroffst[1] && !audblk->fsnroffst[2] && + !audblk->fsnroffst[3] && !audblk->fsnroffst[4] && + !audblk->cplfsnroffst && !audblk->lfefsnroffst) + { + memset(audblk->fbw_bap, 0, sizeof(short) * 256 * 5); + memset(audblk->cpl_bap, 0, sizeof(short) * 256); + memset(audblk->lfe_bap, 0, sizeof(short) * 7); + return 0; + } + + for(i = 0; i < bsi->nfchans; i++) + { + start = 0; + end = audblk->endmant[i]; + fgain = mpeg3_fastgain[audblk->fgaincod[i]]; + snroffset = (((audblk->csnroffst - 15) << 4) + audblk->fsnroffst[i]) << 2 ; + fastleak = 0; + slowleak = 0; + + mpeg3audio_ac3_ba_compute_psd(start, + end, + audblk->fbw_exp[i], + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.bndpsd); + + mpeg3audio_ac3_ba_compute_excitation(audio, + start, + end , + fgain, + fastleak, + slowleak, + 0, + audio->ac3_bit_allocation.bndpsd, + audio->ac3_bit_allocation.excite); + + mpeg3audio_ac3_ba_compute_mask(audio, + start, + end, + fscod, + audblk->deltbae[i], + audblk->deltnseg[i], + audblk->deltoffst[i], + audblk->deltba[i], + audblk->deltlen[i], + audio->ac3_bit_allocation.excite, + audio->ac3_bit_allocation.mask); + + mpeg3audio_ac3_ba_compute_bap(audio, + start, + end, + snroffset, + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.mask, + audblk->fbw_bap[i]); + } + + if(audblk->cplinu) + { + start = audblk->cplstrtmant; + end = audblk->cplendmant; + fgain = mpeg3_fastgain[audblk->cplfgaincod]; + snroffset = (((audblk->csnroffst - 15) << 4) + audblk->cplfsnroffst) << 2 ; + fastleak = (audblk->cplfleak << 8) + 768; + slowleak = (audblk->cplsleak << 8) + 768; + + mpeg3audio_ac3_ba_compute_psd(start, + end, + audblk->cpl_exp, + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.bndpsd); + + mpeg3audio_ac3_ba_compute_excitation(audio, + start, + end , + fgain, + fastleak, + slowleak, + 0, + audio->ac3_bit_allocation.bndpsd, + audio->ac3_bit_allocation.excite); + + mpeg3audio_ac3_ba_compute_mask(audio, + start, + end, + fscod, + audblk->cpldeltbae, + audblk->cpldeltnseg, + audblk->cpldeltoffst, + audblk->cpldeltba, + audblk->cpldeltlen, + audio->ac3_bit_allocation.excite, + audio->ac3_bit_allocation.mask); + + mpeg3audio_ac3_ba_compute_bap(audio, + start, + end, + snroffset, + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.mask, + audblk->cpl_bap); + } + + if(bsi->lfeon) + { + start = 0; + end = 7; + fgain = mpeg3_fastgain[audblk->lfefgaincod]; + snroffset = (((audblk->csnroffst - 15) << 4) + audblk->lfefsnroffst) << 2 ; + fastleak = 0; + slowleak = 0; + + mpeg3audio_ac3_ba_compute_psd(start, + end, + audblk->lfe_exp, + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.bndpsd); + + mpeg3audio_ac3_ba_compute_excitation(audio, + start, + end , + fgain, + fastleak, + slowleak, + 1, + audio->ac3_bit_allocation.bndpsd, + audio->ac3_bit_allocation.excite); + +/* Perform no delta bit allocation for lfe */ + mpeg3audio_ac3_ba_compute_mask(audio, + start, + end, + fscod, + 2, + 0, + 0, + 0, + 0, + audio->ac3_bit_allocation.excite, + audio->ac3_bit_allocation.mask); + + mpeg3audio_ac3_ba_compute_bap(audio, + start, + end, + snroffset, + audio->ac3_bit_allocation.psd, + audio->ac3_bit_allocation.mask, + audblk->lfe_bap); + } + + return result; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/c_flags b/core/multimedia/opieplayer/libmpeg3/audio/c_flags new file mode 100755 index 0000000..d7943d0 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/c_flags @@ -0,0 +1 @@ +echo $CFLAGS diff --git a/core/multimedia/opieplayer/libmpeg3/audio/dct.c b/core/multimedia/opieplayer/libmpeg3/audio/dct.c new file mode 100644 index 0000000..1fd52ce --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/dct.c @@ -0,0 +1,1135 @@ +/* + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +/* + * Discrete Cosine Tansform (DCT) for subband synthesis + * optimized for machines with no auto-increment. + * The performance is highly compiler dependend. Maybe + * the dct64.c version for 'normal' processor may be faster + * even for Intel processors. + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "tables.h" + +#include <math.h> + +int mpeg3audio_dct64_1(mpeg3_real_t *out0, mpeg3_real_t *out1, mpeg3_real_t *b1, mpeg3_real_t *b2, mpeg3_real_t *samples) +{ + register mpeg3_real_t *costab = mpeg3_pnts[0]; + + b1[0x00] = samples[0x00] + samples[0x1F]; + b1[0x01] = samples[0x01] + samples[0x1E]; + b1[0x1F] = (samples[0x00] - samples[0x1F]) * costab[0x0]; + b1[0x1E] = (samples[0x01] - samples[0x1E]) * costab[0x1]; + + b1[0x02] = samples[0x02] + samples[0x1D]; + b1[0x03] = samples[0x03] + samples[0x1C]; + b1[0x1D] = (samples[0x02] - samples[0x1D]) * costab[0x2]; + b1[0x1C] = (samples[0x03] - samples[0x1C]) * costab[0x3]; + + b1[0x04] = samples[0x04] + samples[0x1B]; + b1[0x05] = samples[0x05] + samples[0x1A]; + b1[0x1B] = (samples[0x04] - samples[0x1B]) * costab[0x4]; + b1[0x1A] = (samples[0x05] - samples[0x1A]) * costab[0x5]; + + b1[0x06] = samples[0x06] + samples[0x19]; + b1[0x07] = samples[0x07] + samples[0x18]; + b1[0x19] = (samples[0x06] - samples[0x19]) * costab[0x6]; + b1[0x18] = (samples[0x07] - samples[0x18]) * costab[0x7]; + + b1[0x08] = samples[0x08] + samples[0x17]; + b1[0x09] = samples[0x09] + samples[0x16]; + b1[0x17] = (samples[0x08] - samples[0x17]) * costab[0x8]; + b1[0x16] = (samples[0x09] - samples[0x16]) * costab[0x9]; + + b1[0x0A] = samples[0x0A] + samples[0x15]; + b1[0x0B] = samples[0x0B] + samples[0x14]; + b1[0x15] = (samples[0x0A] - samples[0x15]) * costab[0xA]; + b1[0x14] = (samples[0x0B] - samples[0x14]) * costab[0xB]; + + b1[0x0C] = samples[0x0C] + samples[0x13]; + b1[0x0D] = samples[0x0D] + samples[0x12]; + b1[0x13] = (samples[0x0C] - samples[0x13]) * costab[0xC]; + b1[0x12] = (samples[0x0D] - samples[0x12]) * costab[0xD]; + + b1[0x0E] = samples[0x0E] + samples[0x11]; + b1[0x0F] = samples[0x0F] + samples[0x10]; + b1[0x11] = (samples[0x0E] - samples[0x11]) * costab[0xE]; + b1[0x10] = (samples[0x0F] - samples[0x10]) * costab[0xF]; + + costab = mpeg3_pnts[1]; + + b2[0x00] = b1[0x00] + b1[0x0F]; + b2[0x01] = b1[0x01] + b1[0x0E]; + b2[0x0F] = (b1[0x00] - b1[0x0F]) * costab[0]; + b2[0x0E] = (b1[0x01] - b1[0x0E]) * costab[1]; + + b2[0x02] = b1[0x02] + b1[0x0D]; + b2[0x03] = b1[0x03] + b1[0x0C]; + b2[0x0D] = (b1[0x02] - b1[0x0D]) * costab[2]; + b2[0x0C] = (b1[0x03] - b1[0x0C]) * costab[3]; + + b2[0x04] = b1[0x04] + b1[0x0B]; + b2[0x05] = b1[0x05] + b1[0x0A]; + b2[0x0B] = (b1[0x04] - b1[0x0B]) * costab[4]; + b2[0x0A] = (b1[0x05] - b1[0x0A]) * costab[5]; + + b2[0x06] = b1[0x06] + b1[0x09]; + b2[0x07] = b1[0x07] + b1[0x08]; + b2[0x09] = (b1[0x06] - b1[0x09]) * costab[6]; + b2[0x08] = (b1[0x07] - b1[0x08]) * costab[7]; + + /* */ + + b2[0x10] = b1[0x10] + b1[0x1F]; + b2[0x11] = b1[0x11] + b1[0x1E]; + b2[0x1F] = (b1[0x1F] - b1[0x10]) * costab[0]; + b2[0x1E] = (b1[0x1E] - b1[0x11]) * costab[1]; + + b2[0x12] = b1[0x12] + b1[0x1D]; + b2[0x13] = b1[0x13] + b1[0x1C]; + b2[0x1D] = (b1[0x1D] - b1[0x12]) * costab[2]; + b2[0x1C] = (b1[0x1C] - b1[0x13]) * costab[3]; + + b2[0x14] = b1[0x14] + b1[0x1B]; + b2[0x15] = b1[0x15] + b1[0x1A]; + b2[0x1B] = (b1[0x1B] - b1[0x14]) * costab[4]; + b2[0x1A] = (b1[0x1A] - b1[0x15]) * costab[5]; + + b2[0x16] = b1[0x16] + b1[0x19]; + b2[0x17] = b1[0x17] + b1[0x18]; + b2[0x19] = (b1[0x19] - b1[0x16]) * costab[6]; + b2[0x18] = (b1[0x18] - b1[0x17]) * costab[7]; + + costab = mpeg3_pnts[2]; + + b1[0x00] = b2[0x00] + b2[0x07]; + b1[0x07] = (b2[0x00] - b2[0x07]) * costab[0]; + b1[0x01] = b2[0x01] + b2[0x06]; + b1[0x06] = (b2[0x01] - b2[0x06]) * costab[1]; + b1[0x02] = b2[0x02] + b2[0x05]; + b1[0x05] = (b2[0x02] - b2[0x05]) * costab[2]; + b1[0x03] = b2[0x03] + b2[0x04]; + b1[0x04] = (b2[0x03] - b2[0x04]) * costab[3]; + + b1[0x08] = b2[0x08] + b2[0x0F]; + b1[0x0F] = (b2[0x0F] - b2[0x08]) * costab[0]; + b1[0x09] = b2[0x09] + b2[0x0E]; + b1[0x0E] = (b2[0x0E] - b2[0x09]) * costab[1]; + b1[0x0A] = b2[0x0A] + b2[0x0D]; + b1[0x0D] = (b2[0x0D] - b2[0x0A]) * costab[2]; + b1[0x0B] = b2[0x0B] + b2[0x0C]; + b1[0x0C] = (b2[0x0C] - b2[0x0B]) * costab[3]; + + b1[0x10] = b2[0x10] + b2[0x17]; + b1[0x17] = (b2[0x10] - b2[0x17]) * costab[0]; + b1[0x11] = b2[0x11] + b2[0x16]; + b1[0x16] = (b2[0x11] - b2[0x16]) * costab[1]; + b1[0x12] = b2[0x12] + b2[0x15]; + b1[0x15] = (b2[0x12] - b2[0x15]) * costab[2]; + b1[0x13] = b2[0x13] + b2[0x14]; + b1[0x14] = (b2[0x13] - b2[0x14]) * costab[3]; + + b1[0x18] = b2[0x18] + b2[0x1F]; + b1[0x1F] = (b2[0x1F] - b2[0x18]) * costab[0]; + b1[0x19] = b2[0x19] + b2[0x1E]; + b1[0x1E] = (b2[0x1E] - b2[0x19]) * costab[1]; + b1[0x1A] = b2[0x1A] + b2[0x1D]; + b1[0x1D] = (b2[0x1D] - b2[0x1A]) * costab[2]; + b1[0x1B] = b2[0x1B] + b2[0x1C]; + b1[0x1C] = (b2[0x1C] - b2[0x1B]) * costab[3]; + + { + register mpeg3_real_t const cos0 = mpeg3_pnts[3][0]; + register mpeg3_real_t const cos1 = mpeg3_pnts[3][1]; + + b2[0x00] = b1[0x00] + b1[0x03]; + b2[0x03] = (b1[0x00] - b1[0x03]) * cos0; + b2[0x01] = b1[0x01] + b1[0x02]; + b2[0x02] = (b1[0x01] - b1[0x02]) * cos1; + + b2[0x04] = b1[0x04] + b1[0x07]; + b2[0x07] = (b1[0x07] - b1[0x04]) * cos0; + b2[0x05] = b1[0x05] + b1[0x06]; + b2[0x06] = (b1[0x06] - b1[0x05]) * cos1; + + b2[0x08] = b1[0x08] + b1[0x0B]; + b2[0x0B] = (b1[0x08] - b1[0x0B]) * cos0; + b2[0x09] = b1[0x09] + b1[0x0A]; + b2[0x0A] = (b1[0x09] - b1[0x0A]) * cos1; + + b2[0x0C] = b1[0x0C] + b1[0x0F]; + b2[0x0F] = (b1[0x0F] - b1[0x0C]) * cos0; + b2[0x0D] = b1[0x0D] + b1[0x0E]; + b2[0x0E] = (b1[0x0E] - b1[0x0D]) * cos1; + + b2[0x10] = b1[0x10] + b1[0x13]; + b2[0x13] = (b1[0x10] - b1[0x13]) * cos0; + b2[0x11] = b1[0x11] + b1[0x12]; + b2[0x12] = (b1[0x11] - b1[0x12]) * cos1; + + b2[0x14] = b1[0x14] + b1[0x17]; + b2[0x17] = (b1[0x17] - b1[0x14]) * cos0; + b2[0x15] = b1[0x15] + b1[0x16]; + b2[0x16] = (b1[0x16] - b1[0x15]) * cos1; + + b2[0x18] = b1[0x18] + b1[0x1B]; + b2[0x1B] = (b1[0x18] - b1[0x1B]) * cos0; + b2[0x19] = b1[0x19] + b1[0x1A]; + b2[0x1A] = (b1[0x19] - b1[0x1A]) * cos1; + + b2[0x1C] = b1[0x1C] + b1[0x1F]; + b2[0x1F] = (b1[0x1F] - b1[0x1C]) * cos0; + b2[0x1D] = b1[0x1D] + b1[0x1E]; + b2[0x1E] = (b1[0x1E] - b1[0x1D]) * cos1; + } + + { + register mpeg3_real_t const cos0 = mpeg3_pnts[4][0]; + + b1[0x00] = b2[0x00] + b2[0x01]; + b1[0x01] = (b2[0x00] - b2[0x01]) * cos0; + b1[0x02] = b2[0x02] + b2[0x03]; + b1[0x03] = (b2[0x03] - b2[0x02]) * cos0; + b1[0x02] += b1[0x03]; + + b1[0x04] = b2[0x04] + b2[0x05]; + b1[0x05] = (b2[0x04] - b2[0x05]) * cos0; + b1[0x06] = b2[0x06] + b2[0x07]; + b1[0x07] = (b2[0x07] - b2[0x06]) * cos0; + b1[0x06] += b1[0x07]; + b1[0x04] += b1[0x06]; + b1[0x06] += b1[0x05]; + b1[0x05] += b1[0x07]; + + b1[0x08] = b2[0x08] + b2[0x09]; + b1[0x09] = (b2[0x08] - b2[0x09]) * cos0; + b1[0x0A] = b2[0x0A] + b2[0x0B]; + b1[0x0B] = (b2[0x0B] - b2[0x0A]) * cos0; + b1[0x0A] += b1[0x0B]; + + b1[0x0C] = b2[0x0C] + b2[0x0D]; + b1[0x0D] = (b2[0x0C] - b2[0x0D]) * cos0; + b1[0x0E] = b2[0x0E] + b2[0x0F]; + b1[0x0F] = (b2[0x0F] - b2[0x0E]) * cos0; + b1[0x0E] += b1[0x0F]; + b1[0x0C] += b1[0x0E]; + b1[0x0E] += b1[0x0D]; + b1[0x0D] += b1[0x0F]; + + b1[0x10] = b2[0x10] + b2[0x11]; + b1[0x11] = (b2[0x10] - b2[0x11]) * cos0; + b1[0x12] = b2[0x12] + b2[0x13]; + b1[0x13] = (b2[0x13] - b2[0x12]) * cos0; + b1[0x12] += b1[0x13]; + + b1[0x14] = b2[0x14] + b2[0x15]; + b1[0x15] = (b2[0x14] - b2[0x15]) * cos0; + b1[0x16] = b2[0x16] + b2[0x17]; + b1[0x17] = (b2[0x17] - b2[0x16]) * cos0; + b1[0x16] += b1[0x17]; + b1[0x14] += b1[0x16]; + b1[0x16] += b1[0x15]; + b1[0x15] += b1[0x17]; + + b1[0x18] = b2[0x18] + b2[0x19]; + b1[0x19] = (b2[0x18] - b2[0x19]) * cos0; + b1[0x1A] = b2[0x1A] + b2[0x1B]; + b1[0x1B] = (b2[0x1B] - b2[0x1A]) * cos0; + b1[0x1A] += b1[0x1B]; + + b1[0x1C] = b2[0x1C] + b2[0x1D]; + b1[0x1D] = (b2[0x1C] - b2[0x1D]) * cos0; + b1[0x1E] = b2[0x1E] + b2[0x1F]; + b1[0x1F] = (b2[0x1F] - b2[0x1E]) * cos0; + b1[0x1E] += b1[0x1F]; + b1[0x1C] += b1[0x1E]; + b1[0x1E] += b1[0x1D]; + b1[0x1D] += b1[0x1F]; + } + + out0[0x10*16] = b1[0x00]; + out0[0x10*12] = b1[0x04]; + out0[0x10* 8] = b1[0x02]; + out0[0x10* 4] = b1[0x06]; + out0[0x10* 0] = b1[0x01]; + out1[0x10* 0] = b1[0x01]; + out1[0x10* 4] = b1[0x05]; + out1[0x10* 8] = b1[0x03]; + out1[0x10*12] = b1[0x07]; + + out0[0x10*14] = b1[0x08] + b1[0x0C]; + out0[0x10*10] = b1[0x0C] + b1[0x0a]; + out0[0x10* 6] = b1[0x0A] + b1[0x0E]; + out0[0x10* 2] = b1[0x0E] + b1[0x09]; + out1[0x10* 2] = b1[0x09] + b1[0x0D]; + out1[0x10* 6] = b1[0x0D] + b1[0x0B]; + out1[0x10*10] = b1[0x0B] + b1[0x0F]; + out1[0x10*14] = b1[0x0F]; + + { + register mpeg3_real_t tmp; + tmp = b1[0x18] + b1[0x1C]; + out0[0x10*15] = tmp + b1[0x10]; + out0[0x10*13] = tmp + b1[0x14]; + tmp = b1[0x1C] + b1[0x1A]; + out0[0x10*11] = tmp + b1[0x14]; + out0[0x10* 9] = tmp + b1[0x12]; + tmp = b1[0x1A] + b1[0x1E]; + out0[0x10* 7] = tmp + b1[0x12]; + out0[0x10* 5] = tmp + b1[0x16]; + tmp = b1[0x1E] + b1[0x19]; + out0[0x10* 3] = tmp + b1[0x16]; + out0[0x10* 1] = tmp + b1[0x11]; + tmp = b1[0x19] + b1[0x1D]; + out1[0x10* 1] = tmp + b1[0x11]; + out1[0x10* 3] = tmp + b1[0x15]; + tmp = b1[0x1D] + b1[0x1B]; + out1[0x10* 5] = tmp + b1[0x15]; + out1[0x10* 7] = tmp + b1[0x13]; + tmp = b1[0x1B] + b1[0x1F]; + out1[0x10* 9] = tmp + b1[0x13]; + out1[0x10*11] = tmp + b1[0x17]; + out1[0x10*13] = b1[0x17] + b1[0x1F]; + out1[0x10*15] = b1[0x1F]; + } + return 0; +} + +/* + * the call via dct64 is a trick to force GCC to use + * (new) registers for the b1,b2 pointer to the bufs[xx] field + */ +int mpeg3audio_dct64(mpeg3_real_t *a, mpeg3_real_t *b, mpeg3_real_t *c) +{ + mpeg3_real_t bufs[0x40]; + return mpeg3audio_dct64_1(a, b, bufs, bufs + 0x20, c); +} + +/*//////////////////////////////////////////////////////////////// */ +/* */ +/* 9 Point Inverse Discrete Cosine Transform */ +/* */ +/* This piece of code is Copyright 1997 Mikko Tommila and is freely usable */ +/* by anybody. The algorithm itself is of course in the public domain. */ +/* */ +/* Again derived heuristically from the 9-point WFTA. */ +/* */ +/* The algorithm is optimized (?) for speed, not for small rounding errors or */ +/* good readability. */ +/* */ +/* 36 additions, 11 multiplications */ +/* */ +/* Again this is very likely sub-optimal. */ +/* */ +/* The code is optimized to use a minimum number of temporary variables, */ +/* so it should compile quite well even on 8-register Intel x86 processors. */ +/* This makes the code quite obfuscated and very difficult to understand. */ +/* */ +/* References: */ +/* [1] S. Winograd: "On Computing the Discrete Fourier Transform", */ +/* Mathematics of Computation, Volume 32, Number 141, January 1978, */ +/* Pages 175-199 */ + + +/*------------------------------------------------------------------*/ +/* */ +/* Function: Calculation of the inverse MDCT */ +/* */ +/*------------------------------------------------------------------*/ + +int mpeg3audio_dct36(mpeg3_real_t *inbuf, mpeg3_real_t *o1, mpeg3_real_t *o2, mpeg3_real_t *wintab, mpeg3_real_t *tsbuf) +{ + mpeg3_real_t tmp[18]; + + { + register mpeg3_real_t *in = inbuf; + + in[17]+=in[16]; in[16]+=in[15]; in[15]+=in[14]; + in[14]+=in[13]; in[13]+=in[12]; in[12]+=in[11]; + in[11]+=in[10]; in[10]+=in[9]; in[9] +=in[8]; + in[8] +=in[7]; in[7] +=in[6]; in[6] +=in[5]; + in[5] +=in[4]; in[4] +=in[3]; in[3] +=in[2]; + in[2] +=in[1]; in[1] +=in[0]; + + in[17]+=in[15]; in[15]+=in[13]; in[13]+=in[11]; in[11]+=in[9]; + in[9] +=in[7]; in[7] +=in[5]; in[5] +=in[3]; in[3] +=in[1]; + + + { + mpeg3_real_t t3; + { + mpeg3_real_t t0, t1, t2; + + t0 = mpeg3_COS6_2 * (in[8] + in[16] - in[4]); + t1 = mpeg3_COS6_2 * in[12]; + + t3 = in[0]; + t2 = t3 - t1 - t1; + tmp[1] = tmp[7] = t2 - t0; + tmp[4] = t2 + t0 + t0; + t3 += t1; + + t2 = mpeg3_COS6_1 * (in[10] + in[14] - in[2]); + tmp[1] -= t2; + tmp[7] += t2; + } + { + mpeg3_real_t t0, t1, t2; + + t0 = mpeg3_cos9[0] * (in[4] + in[8] ); + t1 = mpeg3_cos9[1] * (in[8] - in[16]); + t2 = mpeg3_cos9[2] * (in[4] + in[16]); + + tmp[2] = tmp[6] = t3 - t0 - t2; + tmp[0] = tmp[8] = t3 + t0 + t1; + tmp[3] = tmp[5] = t3 - t1 + t2; + } + } + { + mpeg3_real_t t1, t2, t3; + + t1 = mpeg3_cos18[0] * (in[2] + in[10]); + t2 = mpeg3_cos18[1] * (in[10] - in[14]); + t3 = mpeg3_COS6_1 * in[6]; + + { + mpeg3_real_t t0 = t1 + t2 + t3; + tmp[0] += t0; + tmp[8] -= t0; + } + + t2 -= t3; + t1 -= t3; + + t3 = mpeg3_cos18[2] * (in[2] + in[14]); + + t1 += t3; + tmp[3] += t1; + tmp[5] -= t1; + + t2 -= t3; + tmp[2] += t2; + tmp[6] -= t2; + } + + + { + mpeg3_real_t t0, t1, t2, t3, t4, t5, t6, t7; + + t1 = mpeg3_COS6_2 * in[13]; + t2 = mpeg3_COS6_2 * (in[9] + in[17] - in[5]); + + t3 = in[1] + t1; + t4 = in[1] - t1 - t1; + t5 = t4 - t2; + + t0 = mpeg3_cos9[0] * (in[5] + in[9]); + t1 = mpeg3_cos9[1] * (in[9] - in[17]); + + tmp[13] = (t4 + t2 + t2) * mpeg3_tfcos36[17-13]; + t2 = mpeg3_cos9[2] * (in[5] + in[17]); + + t6 = t3 - t0 - t2; + t0 += t3 + t1; + t3 += t2 - t1; + + t2 = mpeg3_cos18[0] * (in[3] + in[11]); + t4 = mpeg3_cos18[1] * (in[11] - in[15]); + t7 = mpeg3_COS6_1 * in[7]; + + t1 = t2 + t4 + t7; + tmp[17] = (t0 + t1) * mpeg3_tfcos36[17-17]; + tmp[9] = (t0 - t1) * mpeg3_tfcos36[17-9]; + t1 = mpeg3_cos18[2] * (in[3] + in[15]); + t2 += t1 - t7; + + tmp[14] = (t3 + t2) * mpeg3_tfcos36[17-14]; + t0 = mpeg3_COS6_1 * (in[11] + in[15] - in[3]); + tmp[12] = (t3 - t2) * mpeg3_tfcos36[17-12]; + + t4 -= t1 + t7; + + tmp[16] = (t5 - t0) * mpeg3_tfcos36[17-16]; + tmp[10] = (t5 + t0) * mpeg3_tfcos36[17-10]; + tmp[15] = (t6 + t4) * mpeg3_tfcos36[17-15]; + tmp[11] = (t6 - t4) * mpeg3_tfcos36[17-11]; + } + +#define MACRO(v) \ + { \ + mpeg3_real_t tmpval; \ + tmpval = tmp[(v)] + tmp[17-(v)]; \ + out2[9+(v)] = tmpval * w[27+(v)]; \ + out2[8-(v)] = tmpval * w[26-(v)]; \ + tmpval = tmp[(v)] - tmp[17-(v)]; \ + ts[SBLIMIT*(8-(v))] = out1[8-(v)] + tmpval * w[8-(v)]; \ + ts[SBLIMIT*(9+(v))] = out1[9+(v)] + tmpval * w[9+(v)]; \ + } + + { + register mpeg3_real_t *out2 = o2; + register mpeg3_real_t *w = wintab; + register mpeg3_real_t *out1 = o1; + register mpeg3_real_t *ts = tsbuf; + + MACRO(0); + MACRO(1); + MACRO(2); + MACRO(3); + MACRO(4); + MACRO(5); + MACRO(6); + MACRO(7); + MACRO(8); + } + } + return 0; +} + +/* + * new DCT12 + */ +int mpeg3audio_dct12(mpeg3_real_t *in,mpeg3_real_t *rawout1,mpeg3_real_t *rawout2,register mpeg3_real_t *wi,register mpeg3_real_t *ts) +{ +#define DCT12_PART1 \ + in5 = in[5*3]; \ + in5 += (in4 = in[4*3]); \ + in4 += (in3 = in[3*3]); \ + in3 += (in2 = in[2*3]); \ + in2 += (in1 = in[1*3]); \ + in1 += (in0 = in[0*3]); \ + \ + in5 += in3; in3 += in1; \ + \ + in2 *= mpeg3_COS6_1; \ + in3 *= mpeg3_COS6_1; \ + +#define DCT12_PART2 \ + in0 += in4 * mpeg3_COS6_2; \ + \ + in4 = in0 + in2; \ + in0 -= in2; \ + \ + in1 += in5 * mpeg3_COS6_2; \ + \ + in5 = (in1 + in3) * mpeg3_tfcos12[0]; \ + in1 = (in1 - in3) * mpeg3_tfcos12[2]; \ + \ + in3 = in4 + in5; \ + in4 -= in5; \ + \ + in2 = in0 + in1; \ + in0 -= in1; + + + { + mpeg3_real_t in0,in1,in2,in3,in4,in5; + register mpeg3_real_t *out1 = rawout1; + ts[SBLIMIT*0] = out1[0]; ts[SBLIMIT*1] = out1[1]; ts[SBLIMIT*2] = out1[2]; + ts[SBLIMIT*3] = out1[3]; ts[SBLIMIT*4] = out1[4]; ts[SBLIMIT*5] = out1[5]; + + DCT12_PART1 + + { + mpeg3_real_t tmp0,tmp1 = (in0 - in4); + { + mpeg3_real_t tmp2 = (in1 - in5) * mpeg3_tfcos12[1]; + tmp0 = tmp1 + tmp2; + tmp1 -= tmp2; + } + ts[(17-1)*SBLIMIT] = out1[17-1] + tmp0 * wi[11-1]; + ts[(12+1)*SBLIMIT] = out1[12+1] + tmp0 * wi[6+1]; + ts[(6 +1)*SBLIMIT] = out1[6 +1] + tmp1 * wi[1]; + ts[(11-1)*SBLIMIT] = out1[11-1] + tmp1 * wi[5-1]; + } + + DCT12_PART2 + + ts[(17-0)*SBLIMIT] = out1[17-0] + in2 * wi[11-0]; + ts[(12+0)*SBLIMIT] = out1[12+0] + in2 * wi[6+0]; + ts[(12+2)*SBLIMIT] = out1[12+2] + in3 * wi[6+2]; + ts[(17-2)*SBLIMIT] = out1[17-2] + in3 * wi[11-2]; + + ts[(6+0)*SBLIMIT] = out1[6+0] + in0 * wi[0]; + ts[(11-0)*SBLIMIT] = out1[11-0] + in0 * wi[5-0]; + ts[(6+2)*SBLIMIT] = out1[6+2] + in4 * wi[2]; + ts[(11-2)*SBLIMIT] = out1[11-2] + in4 * wi[5-2]; + } + + in++; + + { + mpeg3_real_t in0,in1,in2,in3,in4,in5; + register mpeg3_real_t *out2 = rawout2; + + DCT12_PART1 + + { + mpeg3_real_t tmp0,tmp1 = (in0 - in4); + { + mpeg3_real_t tmp2 = (in1 - in5) * mpeg3_tfcos12[1]; + tmp0 = tmp1 + tmp2; + tmp1 -= tmp2; + } + out2[5-1] = tmp0 * wi[11-1]; + out2[0+1] = tmp0 * wi[6+1]; + ts[(12+1)*SBLIMIT] += tmp1 * wi[1]; + ts[(17-1)*SBLIMIT] += tmp1 * wi[5-1]; + } + + DCT12_PART2 + + out2[5-0] = in2 * wi[11-0]; + out2[0+0] = in2 * wi[6+0]; + out2[0+2] = in3 * wi[6+2]; + out2[5-2] = in3 * wi[11-2]; + + ts[(12+0)*SBLIMIT] += in0 * wi[0]; + ts[(17-0)*SBLIMIT] += in0 * wi[5-0]; + ts[(12+2)*SBLIMIT] += in4 * wi[2]; + ts[(17-2)*SBLIMIT] += in4 * wi[5-2]; + } + + in++; + + { + mpeg3_real_t in0,in1,in2,in3,in4,in5; + register mpeg3_real_t *out2 = rawout2; + out2[12]=out2[13]=out2[14]=out2[15]=out2[16]=out2[17]=0.0; + + DCT12_PART1 + + { + mpeg3_real_t tmp0,tmp1 = (in0 - in4); + { + mpeg3_real_t tmp2 = (in1 - in5) * mpeg3_tfcos12[1]; + tmp0 = tmp1 + tmp2; + tmp1 -= tmp2; + } + out2[11-1] = tmp0 * wi[11-1]; + out2[6 +1] = tmp0 * wi[6+1]; + out2[0+1] += tmp1 * wi[1]; + out2[5-1] += tmp1 * wi[5-1]; + } + + DCT12_PART2 + + out2[11-0] = in2 * wi[11-0]; + out2[6 +0] = in2 * wi[6+0]; + out2[6 +2] = in3 * wi[6+2]; + out2[11-2] = in3 * wi[11-2]; + + out2[0+0] += in0 * wi[0]; + out2[5-0] += in0 * wi[5-0]; + out2[0+2] += in4 * wi[2]; + out2[5-2] += in4 * wi[5-2]; + } + return 0; +} + +/* AC3 IMDCT tables */ + +/* Twiddle factors for IMDCT */ +#if !defined(USE_FIXED_POINT) || defined(PRINT_FIXED_POINT_TABLES) +static mpeg3_real_t mpeg3_xcos1[AC3_N / 4]; +static mpeg3_real_t mpeg3_xsin1[AC3_N / 4]; +static mpeg3_real_t mpeg3_xcos2[AC3_N / 8]; +static mpeg3_real_t mpeg3_xsin2[AC3_N / 8]; +#else +#define USE_FP_TABLES +#include "fptables.h" +#endif + +/* 128 point bit-reverse LUT */ +static unsigned char mpeg3_bit_reverse_512[] = +{ + 0x00, 0x40, 0x20, 0x60, 0x10, 0x50, 0x30, 0x70, + 0x08, 0x48, 0x28, 0x68, 0x18, 0x58, 0x38, 0x78, + 0x04, 0x44, 0x24, 0x64, 0x14, 0x54, 0x34, 0x74, + 0x0c, 0x4c, 0x2c, 0x6c, 0x1c, 0x5c, 0x3c, 0x7c, + 0x02, 0x42, 0x22, 0x62, 0x12, 0x52, 0x32, 0x72, + 0x0a, 0x4a, 0x2a, 0x6a, 0x1a, 0x5a, 0x3a, 0x7a, + 0x06, 0x46, 0x26, 0x66, 0x16, 0x56, 0x36, 0x76, + 0x0e, 0x4e, 0x2e, 0x6e, 0x1e, 0x5e, 0x3e, 0x7e, + 0x01, 0x41, 0x21, 0x61, 0x11, 0x51, 0x31, 0x71, + 0x09, 0x49, 0x29, 0x69, 0x19, 0x59, 0x39, 0x79, + 0x05, 0x45, 0x25, 0x65, 0x15, 0x55, 0x35, 0x75, + 0x0d, 0x4d, 0x2d, 0x6d, 0x1d, 0x5d, 0x3d, 0x7d, + 0x03, 0x43, 0x23, 0x63, 0x13, 0x53, 0x33, 0x73, + 0x0b, 0x4b, 0x2b, 0x6b, 0x1b, 0x5b, 0x3b, 0x7b, + 0x07, 0x47, 0x27, 0x67, 0x17, 0x57, 0x37, 0x77, + 0x0f, 0x4f, 0x2f, 0x6f, 0x1f, 0x5f, 0x3f, 0x7f +}; + +static unsigned char mpeg3_bit_reverse_256[] = +{ + 0x00, 0x20, 0x10, 0x30, 0x08, 0x28, 0x18, 0x38, + 0x04, 0x24, 0x14, 0x34, 0x0c, 0x2c, 0x1c, 0x3c, + 0x02, 0x22, 0x12, 0x32, 0x0a, 0x2a, 0x1a, 0x3a, + 0x06, 0x26, 0x16, 0x36, 0x0e, 0x2e, 0x1e, 0x3e, + 0x01, 0x21, 0x11, 0x31, 0x09, 0x29, 0x19, 0x39, + 0x05, 0x25, 0x15, 0x35, 0x0d, 0x2d, 0x1d, 0x3d, + 0x03, 0x23, 0x13, 0x33, 0x0b, 0x2b, 0x1b, 0x3b, + 0x07, 0x27, 0x17, 0x37, 0x0f, 0x2f, 0x1f, 0x3f +}; + +/* Windowing function for Modified DCT - Thank you acroread */ +static mpeg3_real_t mpeg3_window[] = +{ + 0.00014, 0.00024, 0.00037, 0.00051, 0.00067, 0.00086, 0.00107, 0.00130, + 0.00157, 0.00187, 0.00220, 0.00256, 0.00297, 0.00341, 0.00390, 0.00443, + 0.00501, 0.00564, 0.00632, 0.00706, 0.00785, 0.00871, 0.00962, 0.01061, + 0.01166, 0.01279, 0.01399, 0.01526, 0.01662, 0.01806, 0.01959, 0.02121, + 0.02292, 0.02472, 0.02662, 0.02863, 0.03073, 0.03294, 0.03527, 0.03770, + 0.04025, 0.04292, 0.04571, 0.04862, 0.05165, 0.05481, 0.05810, 0.06153, + 0.06508, 0.06878, 0.07261, 0.07658, 0.08069, 0.08495, 0.08935, 0.09389, + 0.09859, 0.10343, 0.10842, 0.11356, 0.11885, 0.12429, 0.12988, 0.13563, + 0.14152, 0.14757, 0.15376, 0.16011, 0.16661, 0.17325, 0.18005, 0.18699, + 0.19407, 0.20130, 0.20867, 0.21618, 0.22382, 0.23161, 0.23952, 0.24757, + 0.25574, 0.26404, 0.27246, 0.28100, 0.28965, 0.29841, 0.30729, 0.31626, + 0.32533, 0.33450, 0.34376, 0.35311, 0.36253, 0.37204, 0.38161, 0.39126, + 0.40096, 0.41072, 0.42054, 0.43040, 0.44030, 0.45023, 0.46020, 0.47019, + 0.48020, 0.49022, 0.50025, 0.51028, 0.52031, 0.53033, 0.54033, 0.55031, + 0.56026, 0.57019, 0.58007, 0.58991, 0.59970, 0.60944, 0.61912, 0.62873, + 0.63827, 0.64774, 0.65713, 0.66643, 0.67564, 0.68476, 0.69377, 0.70269, + 0.71150, 0.72019, 0.72877, 0.73723, 0.74557, 0.75378, 0.76186, 0.76981, + 0.77762, 0.78530, 0.79283, 0.80022, 0.80747, 0.81457, 0.82151, 0.82831, + 0.83496, 0.84145, 0.84779, 0.85398, 0.86001, 0.86588, 0.87160, 0.87716, + 0.88257, 0.88782, 0.89291, 0.89785, 0.90264, 0.90728, 0.91176, 0.91610, + 0.92028, 0.92432, 0.92822, 0.93197, 0.93558, 0.93906, 0.94240, 0.94560, + 0.94867, 0.95162, 0.95444, 0.95713, 0.95971, 0.96217, 0.96451, 0.96674, + 0.96887, 0.97089, 0.97281, 0.97463, 0.97635, 0.97799, 0.97953, 0.98099, + 0.98236, 0.98366, 0.98488, 0.98602, 0.98710, 0.98811, 0.98905, 0.98994, + 0.99076, 0.99153, 0.99225, 0.99291, 0.99353, 0.99411, 0.99464, 0.99513, + 0.99558, 0.99600, 0.99639, 0.99674, 0.99706, 0.99736, 0.99763, 0.99788, + 0.99811, 0.99831, 0.99850, 0.99867, 0.99882, 0.99895, 0.99908, 0.99919, + 0.99929, 0.99938, 0.99946, 0.99953, 0.99959, 0.99965, 0.99969, 0.99974, + 0.99978, 0.99981, 0.99984, 0.99986, 0.99988, 0.99990, 0.99992, 0.99993, + 0.99994, 0.99995, 0.99996, 0.99997, 0.99998, 0.99998, 0.99998, 0.99999, + 0.99999, 0.99999, 0.99999, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, + 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000 +}; + +mpeg3_complex_t cmplx_mult(mpeg3_complex_t a, mpeg3_complex_t b) +{ + mpeg3_complex_t ret; + + ret.real = a.real * b.real - a.imag * b.imag; + ret.imag = a.real * b.imag + a.imag * b.real; + + return ret; +} + +int mpeg3audio_imdct_init(mpeg3audio_t *audio) +{ + int i, k; + mpeg3_complex_t angle_step; + mpeg3_complex_t current_angle; + +/* Twiddle factors to turn IFFT into IMDCT */ + for(i = 0; i < AC3_N / 4; i++) + { + mpeg3_xcos1[i] = -cos(2.0f * M_PI * (8 * i + 1 ) / ( 8 * AC3_N)); + mpeg3_xsin1[i] = -sin(2.0f * M_PI * (8 * i + 1 ) / ( 8 * AC3_N)); + } + +/* More twiddle factors to turn IFFT into IMDCT */ + for(i = 0; i < AC3_N / 8; i++) + { + mpeg3_xcos2[i] = -cos(2.0f * M_PI * (8 * i + 1 ) / ( 4 * AC3_N)); + mpeg3_xsin2[i] = -sin(2.0f * M_PI * (8 * i + 1 ) / ( 4 * AC3_N)); + } + +/* Canonical twiddle factors for FFT */ +#if defined(USE_FIXED_POINT) && !defined(PRINT_FIXED_POINT_TABLES) + for(i = 0; i < 7; i++) + { + audio->ac3_w[i] = (mpeg3_complex_t*)ac3_w_fixedpoints[i]; + } +#else + audio->ac3_w[0] = audio->ac3_w_1; + audio->ac3_w[1] = audio->ac3_w_2; + audio->ac3_w[2] = audio->ac3_w_4; + audio->ac3_w[3] = audio->ac3_w_8; + audio->ac3_w[4] = audio->ac3_w_16; + audio->ac3_w[5] = audio->ac3_w_32; + audio->ac3_w[6] = audio->ac3_w_64; + + for(i = 0; i < 7; i++) + { + angle_step.real = cos(-2.0f * M_PI / (1 << (i + 1))); + angle_step.imag = sin(-2.0f * M_PI / (1 << (i + 1))); + + current_angle.real = 1.0f; + current_angle.imag = 0.0f; + + for (k = 0; k < 1 << i; k++) + { + audio->ac3_w[i][k] = current_angle; + current_angle = cmplx_mult(current_angle, angle_step); + } + } + +#ifdef PRINT_FIXED_POINT_TABLES + printf("#ifdef USE_FP_TABLES\n"); + printf("static long mpeg3_xcos1_fixedpoints[] = {"); + for(i = 0; i < AC3_N / 4; i++) { + printf("%c0x%08x,", i%8?' ':'\n', mpeg3_xcos1[i].fixedPoint()); + } + printf("\n};\nstatic mpeg3_real_t *mpeg3_xcos1 = \n" + "(mpeg3_real_t*)mpeg3_xcos1_fixedpoints;\n"); + + printf("static long mpeg3_xsin1_fixedpoints[] = {"); + for(i = 0; i < AC3_N / 4; i++) { + printf("%c0x%08x,", i%8?' ':'\n', mpeg3_xsin1[i].fixedPoint()); + } + printf("\n};\nstatic mpeg3_real_t *mpeg3_xsin1 = \n" + "(mpeg3_real_t*)mpeg3_xsin1_fixedpoints;\n"); + + + printf("static long mpeg3_xcos2_fixedpoints[] = {"); + for(i = 0; i < AC3_N / 4; i++) { + printf("%c0x%08x,", i%8?' ':'\n', mpeg3_xcos2[i].fixedPoint()); + } + printf("\n};\nstatic mpeg3_real_t *mpeg3_xcos2 = \n" + "(mpeg3_real_t*)mpeg3_xcos2_fixedpoints;\n"); + + printf("static long mpeg3_xsin2_fixedpoints[] = {"); + for(i = 0; i < AC3_N / 4; i++) { + printf("%c0x%08x,", i%8?' ':'\n', mpeg3_xsin2[i].fixedPoint()); + } + printf("\n};\nstatic mpeg3_real_t *mpeg3_xsin2 = \n" + "(mpeg3_real_t*)mpeg3_xsin2_fixedpoints;\n"); + + + printf("typedef struct { long r, i; } fixed_cmplx;\n"); + for(i = 0; i < 7; i++) + { + printf("fixed_cmplx ac3_w_d%d[] = { ", 1<<i); + for (k = 0; k < 1 << i; k++) + { + printf("%s{ 0x%08x, 0x%08x },", k%4?" ":"\n ", + audio->ac3_w[i][k].real.fixedPoint(), + audio->ac3_w[i][k].imag.fixedPoint()); + } + printf("};\n"); + } + + printf("fixed_cmplx *ac3_w_fixedpoints[] = {\n"); + for(i = 0; i < 7; i++) + { + printf("ac3_w_d%d, ", 1<<i); + } + printf("};\n"); + printf("#endif\n"); +#endif +#endif + + return 0; +} + + +inline void swap_cmplx(mpeg3_complex_t *a, mpeg3_complex_t *b) +{ + mpeg3_complex_t tmp; + + tmp = *a; + *a = *b; + *b = tmp; +} + +void mpeg3audio_ac3_imdct_do_512(mpeg3audio_t *audio, + mpeg3_real_t data[], + mpeg3_real_t *y, + int step, + mpeg3_real_t *delay) +{ + int i, k; + int p, q; + int m; + int two_m; + int two_m_plus_one; + + mpeg3_real_t tmp_a_i; + mpeg3_real_t tmp_a_r; + mpeg3_real_t tmp_b_i; + mpeg3_real_t tmp_b_r; + + mpeg3_real_t *y_ptr; + mpeg3_real_t *delay_ptr; + mpeg3_real_t *window_ptr; + mpeg3_complex_t *buf = audio->ac3_imdct_buf; + +/* Pre IFFT complex multiply plus IFFT cmplx conjugate */ + for(i = 0; i < AC3_N / 4; i++) + { + buf[i].real = (data[AC3_N / 2 - 2 * i - 1] * mpeg3_xcos1[i]) - (data[2 * i] * mpeg3_xsin1[i]); + buf[i].imag = -((data[2 * i] * mpeg3_xcos1[i]) + (data[AC3_N / 2 - 2 * i - 1] * mpeg3_xsin1[i])); + } + +/* Bit reversed shuffling */ + for(i = 0; i < AC3_N / 4; i++) + { + k = mpeg3_bit_reverse_512[i]; + if(k < i) + swap_cmplx(&buf[i], &buf[k]); + } + +/* FFT Merge */ + for(m = 0; m < 7; m++) + { + if(m) + two_m = (1 << m); + else + two_m = 1; + + two_m_plus_one = (1 << (m + 1)); + + for(k = 0; k < two_m; k++) + { + for(i = 0; i < AC3_N / 4; i += two_m_plus_one) + { + p = k + i; + q = p + two_m; + tmp_a_r = buf[p].real; + tmp_a_i = buf[p].imag; + tmp_b_r = buf[q].real * audio->ac3_w[m][k].real - buf[q].imag * audio->ac3_w[m][k].imag; + tmp_b_i = buf[q].imag * audio->ac3_w[m][k].real + buf[q].real * audio->ac3_w[m][k].imag; + buf[p].real = tmp_a_r + tmp_b_r; + buf[p].imag = tmp_a_i + tmp_b_i; + buf[q].real = tmp_a_r - tmp_b_r; + buf[q].imag = tmp_a_i - tmp_b_i; + } + } + } + +/* Post IFFT complex multiply plus IFFT complex conjugate*/ + for(i = 0; i < AC3_N / 4; i++) + { + tmp_a_r = buf[i].real; + tmp_a_i = -buf[i].imag; + buf[i].real = (tmp_a_r * mpeg3_xcos1[i]) - (tmp_a_i * mpeg3_xsin1[i]); + buf[i].imag = (tmp_a_r * mpeg3_xsin1[i]) + (tmp_a_i * mpeg3_xcos1[i]); + } + + y_ptr = y; + delay_ptr = delay; + window_ptr = mpeg3_window; + +/* Window and convert to real valued signal */ + for(i = 0; i < AC3_N / 8; i++) + { + *y_ptr = -buf[AC3_N / 8 + i].imag * *window_ptr++ + *delay_ptr++; + y_ptr += step; + *y_ptr = buf[AC3_N / 8 - i - 1].real * *window_ptr++ + *delay_ptr++; + y_ptr += step; + } + + for(i = 0; i < AC3_N / 8; i++) + { + *y_ptr = -buf[i].real * *window_ptr++ + *delay_ptr++; + y_ptr += step; + *y_ptr = buf[AC3_N / 4 - i - 1].imag * *window_ptr++ + *delay_ptr++; + y_ptr += step; + } + +/* The trailing edge of the window goes into the delay line */ + delay_ptr = delay; + + for(i = 0; i < AC3_N / 8; i++) + { + *delay_ptr++ = -buf[AC3_N / 8 + i].real * *--window_ptr; + *delay_ptr++ = buf[AC3_N / 8 - i - 1].imag * *--window_ptr; + } + + for(i = 0; i < AC3_N / 8; i++) + { + *delay_ptr++ = buf[i].imag * *--window_ptr; + *delay_ptr++ = -buf[AC3_N / 4 - i - 1].real * *--window_ptr; + } +} + +void mpeg3audio_ac3_imdct_do_256(mpeg3audio_t *audio, + mpeg3_real_t data[], + mpeg3_real_t *y, + int step, + mpeg3_real_t *delay) +{ + int i, k; + int p, q; + int m; + int two_m; + int two_m_plus_one; + mpeg3_complex_t *buf = audio->ac3_imdct_buf; + mpeg3_real_t *y_ptr; + mpeg3_real_t *delay_ptr; + mpeg3_real_t *window_ptr; + + mpeg3_real_t tmp_a_i; + mpeg3_real_t tmp_a_r; + mpeg3_real_t tmp_b_i; + mpeg3_real_t tmp_b_r; + + mpeg3_complex_t *buf_1, *buf_2; + + buf_1 = &buf[0]; + buf_2 = &buf[64]; + +/* Pre IFFT complex multiply plus IFFT cmplx conjugate */ + for(k = 0; k < AC3_N / 8; k++) + { + p = 2 * (AC3_N / 4 - 2 * k - 1); + q = 2 * (2 * k); + + buf_1[k].real = data[p] * mpeg3_xcos2[k] - data[q] * mpeg3_xsin2[k]; + buf_1[k].imag = - (data[q] * mpeg3_xcos2[k] + data[p] * mpeg3_xsin2[k]); + buf_2[k].real = data[p + 1] * mpeg3_xcos2[k] - data[q + 1] * mpeg3_xsin2[k]; + buf_2[k].imag = - (data[q + 1] * mpeg3_xcos2[k] + data[p + 1] * mpeg3_xsin2[k]); + } + +/* IFFT Bit reversed shuffling */ + for(i = 0; i < AC3_N / 8; i++) + { + k = mpeg3_bit_reverse_256[i]; + if(k < i) + { + swap_cmplx(&buf_1[i], &buf_1[k]); + swap_cmplx(&buf_2[i], &buf_2[k]); + } + } + +/* FFT Merge */ + for(m = 0; m < 6; m++) + { + if(m) + two_m = (1 << m); + else + two_m = 1; + + two_m_plus_one = (1 << (m + 1)); + + for(k = 0; k < two_m; k++) + { + for(i = 0; i < AC3_N / 8; i += two_m_plus_one) + { + p = k + i; + q = p + two_m; +/* Do block 1 */ + tmp_a_r = buf_1[p].real; + tmp_a_i = buf_1[p].imag; + tmp_b_r = buf_1[q].real * audio->ac3_w[m][k].real - buf_1[q].imag * audio->ac3_w[m][k].imag; + tmp_b_i = buf_1[q].imag * audio->ac3_w[m][k].real + buf_1[q].real * audio->ac3_w[m][k].imag; + buf_1[p].real = tmp_a_r + tmp_b_r; + buf_1[p].imag = tmp_a_i + tmp_b_i; + buf_1[q].real = tmp_a_r - tmp_b_r; + buf_1[q].imag = tmp_a_i - tmp_b_i; + +/* Do block 2 */ + tmp_a_r = buf_2[p].real; + tmp_a_i = buf_2[p].imag; + tmp_b_r = buf_2[q].real * audio->ac3_w[m][k].real - buf_2[q].imag * audio->ac3_w[m][k].imag; + tmp_b_i = buf_2[q].imag * audio->ac3_w[m][k].real + buf_2[q].real * audio->ac3_w[m][k].imag; + buf_2[p].real = tmp_a_r + tmp_b_r; + buf_2[p].imag = tmp_a_i + tmp_b_i; + buf_2[q].real = tmp_a_r - tmp_b_r; + buf_2[q].imag = tmp_a_i - tmp_b_i; + } + } + } + +/* Post IFFT complex multiply */ + for(i = 0; i < AC3_N / 8; i++) + { + tmp_a_r = buf_1[i].real; + tmp_a_i = -buf_1[i].imag; + buf_1[i].real = (tmp_a_r * mpeg3_xcos2[i]) - (tmp_a_i * mpeg3_xsin2[i]); + buf_1[i].imag = (tmp_a_r * mpeg3_xsin2[i]) + (tmp_a_i * mpeg3_xcos2[i]); + tmp_a_r = buf_2[i].real; + tmp_a_i = -buf_2[i].imag; + buf_2[i].real = (tmp_a_r * mpeg3_xcos2[i]) - (tmp_a_i * mpeg3_xsin2[i]); + buf_2[i].imag = (tmp_a_r * mpeg3_xsin2[i]) + (tmp_a_i * mpeg3_xcos2[i]); + } + +/* Window and convert to real valued signal */ + y_ptr = y; + delay_ptr = delay; + window_ptr = mpeg3_window; + + for(i = 0; i < AC3_N / 8; i++) + { + *y_ptr = -buf[AC3_N / 8 + i].imag * *window_ptr++ + *delay_ptr++; + y_ptr += step; + *y_ptr = buf[AC3_N / 8 - i - 1].real * *window_ptr++ + *delay_ptr++; + y_ptr += step; + } + + for(i = 0; i < AC3_N / 8; i++) + { + *y_ptr = -buf[i].real * *window_ptr++ + *delay_ptr++; + y_ptr += step; + *y_ptr = buf[AC3_N / 4 - i - 1].imag * *window_ptr++ + *delay_ptr++; + y_ptr += step; + } + +/* The trailing edge of the window goes into the delay line */ + delay_ptr = delay; + + for(i = 0; i < AC3_N / 8; i++) + { + *delay_ptr++ = -buf[AC3_N / 8 + i].real * *--window_ptr; + *delay_ptr++ = buf[AC3_N / 8 - i - 1].imag * *--window_ptr; + } + + for(i = 0; i < AC3_N / 8; i++) + { + *delay_ptr++ = buf[i].imag * *--window_ptr; + *delay_ptr++ = -buf[AC3_N / 4 - i - 1].real * *--window_ptr; + } +} + +int mpeg3audio_ac3_imdct(mpeg3audio_t *audio, + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk, + mpeg3ac3_stream_samples_t samples) +{ + int i; + + for(i = 0; i < bsi->nfchans; i++) + { + if(audblk->blksw[i]) + mpeg3audio_ac3_imdct_do_256(audio, + samples[i], + audio->pcm_sample + audio->pcm_point + i, + bsi->nfchans, + audio->ac3_delay[i]); + else + mpeg3audio_ac3_imdct_do_512(audio, + samples[i], + audio->pcm_sample + audio->pcm_point + i, + bsi->nfchans, + audio->ac3_delay[i]); + } + audio->pcm_point += AC3_N / 2 * bsi->nfchans; + return 0; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/exponents.c b/core/multimedia/opieplayer/libmpeg3/audio/exponents.c new file mode 100644 index 0000000..deda9b9 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/exponents.c @@ -0,0 +1,141 @@ +/* + * + * exponents.c Copyright (C) Aaron Holtzman - May 1999 + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include <stdio.h> + +/* Exponent defines */ +#define UNPACK_FBW 1 +#define UNPACK_CPL 2 +#define UNPACK_LFE 4 + +static inline int mpeg3audio_ac3_exp_unpack_ch(unsigned int type, + unsigned int expstr, + unsigned int ngrps, + unsigned int initial_exp, + unsigned short exps[], + unsigned short *dest) +{ + int i, j; + int exp_acc; + int exp_1, exp_2, exp_3; + + if(expstr == MPEG3_EXP_REUSE) + return 0; + +/* Handle the initial absolute exponent */ + exp_acc = initial_exp; + j = 0; + +/* In the case of a fbw channel then the initial absolute value is + * also an exponent */ + if(type != UNPACK_CPL) + dest[j++] = exp_acc; + +/* Loop through the groups and fill the dest array appropriately */ + for(i = 0; i < ngrps; i++) + { + if(exps[i] > 124) + { + fprintf(stderr, "mpeg3audio_ac3_exp_unpack_ch: Invalid exponent %d\n", exps[i]); + return 1; + } + + exp_1 = exps[i] / 25; + exp_2 = (exps[i] % 25) / 5; + exp_3 = (exps[i] % 25) % 5; + + exp_acc += (exp_1 - 2); + + switch(expstr) + { + case MPEG3_EXP_D45: + dest[j++] = exp_acc; + dest[j++] = exp_acc; + case MPEG3_EXP_D25: + dest[j++] = exp_acc; + case MPEG3_EXP_D15: + dest[j++] = exp_acc; + } + + exp_acc += (exp_2 - 2); + + switch(expstr) + { + case MPEG3_EXP_D45: + dest[j++] = exp_acc; + dest[j++] = exp_acc; + case MPEG3_EXP_D25: + dest[j++] = exp_acc; + case MPEG3_EXP_D15: + dest[j++] = exp_acc; + } + + exp_acc += (exp_3 - 2); + + switch(expstr) + { + case MPEG3_EXP_D45: + dest[j++] = exp_acc; + dest[j++] = exp_acc; + case MPEG3_EXP_D25: + dest[j++] = exp_acc; + case MPEG3_EXP_D15: + dest[j++] = exp_acc; + } + } + return 0; +} + +int mpeg3audio_ac3_exponent_unpack(mpeg3audio_t *audio, + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk) +{ + int i, result = 0; + + for(i = 0; i < bsi->nfchans; i++) + result |= mpeg3audio_ac3_exp_unpack_ch(UNPACK_FBW, + audblk->chexpstr[i], + audblk->nchgrps[i], + audblk->exps[i][0], + &audblk->exps[i][1], + audblk->fbw_exp[i]); + + if(audblk->cplinu && !result) + result |= mpeg3audio_ac3_exp_unpack_ch(UNPACK_CPL, + audblk->cplexpstr, + audblk->ncplgrps, + audblk->cplabsexp << 1, + audblk->cplexps, + &audblk->cpl_exp[audblk->cplstrtmant]); + + if(bsi->lfeon && !result) + result |= mpeg3audio_ac3_exp_unpack_ch(UNPACK_LFE, + audblk->lfeexpstr, + 2, + audblk->lfeexps[0], + &audblk->lfeexps[1], + audblk->lfe_exp); + return result; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/fptables.h b/core/multimedia/opieplayer/libmpeg3/audio/fptables.h new file mode 100644 index 0000000..2836984 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/fptables.h @@ -0,0 +1,1556 @@ +#ifdef USE_FP_TABLES +static long mpeg3_xcos1_fixedpoints[] = { +0xffff8001, 0xffff8004, 0xffff800c, 0xffff8019, 0xffff802a, 0xffff8041, 0xffff805d, 0xffff807e, +0xffff80a3, 0xffff80ce, 0xffff80fd, 0xffff8131, 0xffff816b, 0xffff81a9, 0xffff81ec, 0xffff8233, +0xffff8280, 0xffff82d1, 0xffff8328, 0xffff8383, 0xffff83e3, 0xffff8447, 0xffff84b1, 0xffff851f, +0xffff8592, 0xffff860a, 0xffff8686, 0xffff8707, 0xffff878d, 0xffff8817, 0xffff88a6, 0xffff893a, +0xffff89d2, 0xffff8a6f, 0xffff8b10, 0xffff8bb6, 0xffff8c60, 0xffff8d0f, 0xffff8dc2, 0xffff8e7a, +0xffff8f35, 0xffff8ff6, 0xffff90ba, 0xffff9183, 0xffff9250, 0xffff9322, 0xffff93f7, 0xffff94d1, +0xffff95af, 0xffff9691, 0xffff9777, 0xffff9861, 0xffff994f, 0xffff9a41, 0xffff9b37, 0xffff9c31, +0xffff9d2e, 0xffff9e30, 0xffff9f35, 0xffffa03e, 0xffffa14b, 0xffffa25b, 0xffffa36f, 0xffffa487, +0xffffa5a2, 0xffffa6c0, 0xffffa7e2, 0xffffa907, 0xffffaa30, 0xffffab5c, 0xffffac8b, 0xffffadbe, +0xffffaef4, 0xffffb02c, 0xffffb168, 0xffffb2a7, 0xffffb3e9, 0xffffb52e, 0xffffb676, 0xffffb7c0, +0xffffb90d, 0xffffba5d, 0xffffbbb0, 0xffffbd06, 0xffffbe5e, 0xffffbfb8, 0xffffc115, 0xffffc274, +0xffffc3d6, 0xffffc53a, 0xffffc6a1, 0xffffc809, 0xffffc974, 0xffffcae1, 0xffffcc50, 0xffffcdc0, +0xffffcf33, 0xffffd0a8, 0xffffd21e, 0xffffd397, 0xffffd511, 0xffffd68c, 0xffffd80a, 0xffffd988, +0xffffdb09, 0xffffdc8a, 0xffffde0d, 0xffffdf92, 0xffffe117, 0xffffe29e, 0xffffe426, 0xffffe5af, +0xffffe739, 0xffffe8c4, 0xffffea50, 0xffffebdd, 0xffffed6a, 0xffffeef8, 0xfffff087, 0xfffff217, +0xfffff3a7, 0xfffff537, 0xfffff6c8, 0xfffff859, 0xfffff9eb, 0xfffffb7d, 0xfffffd0f, 0xfffffea1, +}; +static mpeg3_real_t *mpeg3_xcos1 = +(mpeg3_real_t*)mpeg3_xcos1_fixedpoints; +static long mpeg3_xsin1_fixedpoints[] = { +0xffffffce, 0xfffffe3c, 0xfffffcaa, 0xfffffb18, 0xfffff986, 0xfffff7f5, 0xfffff664, 0xfffff4d3, +0xfffff343, 0xfffff1b3, 0xfffff023, 0xffffee95, 0xffffed07, 0xffffeb79, 0xffffe9ed, 0xffffe861, +0xffffe6d6, 0xffffe54d, 0xffffe3c4, 0xffffe23c, 0xffffe0b6, 0xffffdf30, 0xffffddac, 0xffffdc2a, +0xffffdaa8, 0xffffd928, 0xffffd7aa, 0xffffd62d, 0xffffd4b2, 0xffffd338, 0xffffd1c1, 0xffffd04b, +0xffffced6, 0xffffcd64, 0xffffcbf4, 0xffffca85, 0xffffc919, 0xffffc7af, 0xffffc647, 0xffffc4e1, +0xffffc37d, 0xffffc21c, 0xffffc0bd, 0xffffbf61, 0xffffbe07, 0xffffbcb0, 0xffffbb5b, 0xffffba09, +0xffffb8ba, 0xffffb76d, 0xffffb623, 0xffffb4dc, 0xffffb398, 0xffffb257, 0xffffb119, 0xffffafde, +0xffffaea6, 0xffffad71, 0xffffac3f, 0xffffab11, 0xffffa9e6, 0xffffa8be, 0xffffa799, 0xffffa678, +0xffffa55b, 0xffffa440, 0xffffa32a, 0xffffa217, 0xffffa107, 0xffff9ffc, 0xffff9ef3, 0xffff9def, +0xffff9cef, 0xffff9bf2, 0xffff9af9, 0xffff9a04, 0xffff9913, 0xffff9826, 0xffff973d, 0xffff9658, +0xffff9577, 0xffff949a, 0xffff93c1, 0xffff92ed, 0xffff921d, 0xffff9151, 0xffff9089, 0xffff8fc5, +0xffff8f06, 0xffff8e4b, 0xffff8d95, 0xffff8ce3, 0xffff8c35, 0xffff8b8c, 0xffff8ae7, 0xffff8a47, +0xffff89ac, 0xffff8915, 0xffff8882, 0xffff87f4, 0xffff876b, 0xffff86e7, 0xffff8667, 0xffff85eb, +0xffff8575, 0xffff8503, 0xffff8496, 0xffff842e, 0xffff83ca, 0xffff836c, 0xffff8312, 0xffff82bd, +0xffff826c, 0xffff8221, 0xffff81da, 0xffff8199, 0xffff815c, 0xffff8124, 0xffff80f1, 0xffff80c3, +0xffff8099, 0xffff8075, 0xffff8056, 0xffff803b, 0xffff8026, 0xffff8015, 0xffff8009, 0xffff8002, +}; +static mpeg3_real_t *mpeg3_xsin1 = +(mpeg3_real_t*)mpeg3_xsin1_fixedpoints; +static long mpeg3_xcos2_fixedpoints[] = { +0xffff8001, 0xffff800d, 0xffff802d, 0xffff8061, 0xffff80a8, 0xffff8103, 0xffff8172, 0xffff81f4, +0xffff828a, 0xffff8333, 0xffff83ef, 0xffff84be, 0xffff85a1, 0xffff8696, 0xffff879e, 0xffff88b9, +0xffff89e5, 0xffff8b25, 0xffff8c76, 0xffff8dd9, 0xffff8f4d, 0xffff90d3, 0xffff926a, 0xffff9412, +0xffff95cb, 0xffff9794, 0xffff996d, 0xffff9b56, 0xffff9d4e, 0xffff9f56, 0xffffa16d, 0xffffa392, +0xffffa5c5, 0xffffa807, 0xffffaa55, 0xffffacb2, 0xffffaf1b, 0xffffb190, 0xffffb411, 0xffffb69f, +0xffffb937, 0xffffbbdb, 0xffffbe89, 0xffffc141, 0xffffc403, 0xffffc6ce, 0xffffc9a1, 0xffffcc7e, +0xffffcf62, 0xffffd24d, 0xffffd540, 0xffffd839, 0xffffdb39, 0xffffde3e, 0xffffe148, 0xffffe457, +0xffffe76a, 0xffffea81, 0xffffed9c, 0xfffff0b9, 0xfffff3d9, 0xfffff6fa, 0xfffffa1d, 0xfffffd41, +0xffffff9c, 0xfffffc78, 0xfffff954, 0xfffff632, 0xfffff311, 0xffffeff2, 0xffffecd5, 0xffffe9bb, +0xffffe6a5, 0xffffe393, 0xffffe085, 0xffffdd7c, 0xffffda78, 0xffffd77a, 0xffffd483, 0xffffd192, +0xffffcea8, 0xffffcbc6, 0xffffc8ec, 0xffffc61a, 0xffffc351, 0xffffc092, 0xffffbddc, 0xffffbb31, +0xffffb890, 0xffffb5fa, 0xffffb370, 0xffffb0f1, 0xffffae7f, 0xffffac19, 0xffffa9c0, 0xffffa775, +0xffffa537, 0xffffa307, 0xffffa0e6, 0xffff9ed3, 0xffff9ccf, 0xffff9ada, 0xffff98f5, 0xffff9720, +0xffff955b, 0xffff93a7, 0xffff9203, 0xffff9070, 0xffff8eee, 0xffff8d7e, 0xffff8c20, 0xffff8ad3, +0xffff8998, 0xffff8870, 0xffff875a, 0xffff8657, 0xffff8566, 0xffff8489, 0xffff83be, 0xffff8307, +0xffff8263, 0xffff81d2, 0xffff8155, 0xffff80eb, 0xffff8095, 0xffff8052, 0xffff8023, 0xffff8008, +}; +static mpeg3_real_t *mpeg3_xcos2 = +(mpeg3_real_t*)mpeg3_xcos2_fixedpoints; +static long mpeg3_xsin2_fixedpoints[] = { +0xffffff9c, 0xfffffc78, 0xfffff954, 0xfffff632, 0xfffff311, 0xffffeff2, 0xffffecd5, 0xffffe9bb, +0xffffe6a5, 0xffffe393, 0xffffe085, 0xffffdd7c, 0xffffda78, 0xffffd77a, 0xffffd483, 0xffffd192, +0xffffcea8, 0xffffcbc6, 0xffffc8ec, 0xffffc61a, 0xffffc351, 0xffffc092, 0xffffbddc, 0xffffbb31, +0xffffb890, 0xffffb5fa, 0xffffb370, 0xffffb0f1, 0xffffae7f, 0xffffac19, 0xffffa9c0, 0xffffa775, +0xffffa537, 0xffffa307, 0xffffa0e6, 0xffff9ed3, 0xffff9ccf, 0xffff9ada, 0xffff98f5, 0xffff9720, +0xffff955b, 0xffff93a7, 0xffff9203, 0xffff9070, 0xffff8eee, 0xffff8d7e, 0xffff8c20, 0xffff8ad3, +0xffff8998, 0xffff8870, 0xffff875a, 0xffff8657, 0xffff8566, 0xffff8489, 0xffff83be, 0xffff8307, +0xffff8263, 0xffff81d2, 0xffff8155, 0xffff80eb, 0xffff8095, 0xffff8052, 0xffff8023, 0xffff8008, +0x00000004, 0x00000007, 0x0000000c, 0x00000010, 0x00000015, 0x0000001c, 0x00000023, 0x0000002a, +0x00000033, 0x0000003d, 0x00000048, 0x00000053, 0x00000061, 0x0000006f, 0x0000007f, 0x00000091, +0x000000a4, 0x000000b8, 0x000000cf, 0x000000e7, 0x00000101, 0x0000011d, 0x0000013b, 0x0000015b, +0x0000017e, 0x000001a3, 0x000001ca, 0x000001f4, 0x00000220, 0x0000024f, 0x00000281, 0x000002b7, +0x000002ef, 0x0000032a, 0x00000368, 0x000003aa, 0x000003ee, 0x00000437, 0x00000483, 0x000004d3, +0x00000526, 0x0000057e, 0x000005d9, 0x00000639, 0x0000069c, 0x00000704, 0x0000076f, 0x000007e0, +0x00000854, 0x000008cd, 0x0000094b, 0x000009cd, 0x00000a54, 0x00000adf, 0x00000b6f, 0x00000c04, +0x00000c9e, 0x00000d3d, 0x00000de0, 0x00000e89, 0x00000f36, 0x00000fe8, 0x0000109f, 0x0000115c, +}; +static mpeg3_real_t *mpeg3_xsin2 = +(mpeg3_real_t*)mpeg3_xsin2_fixedpoints; +typedef struct { long r, i; } fixed_cmplx; +fixed_cmplx ac3_w_d1[] = { + { 0x00008000, 0x00000000 },}; +fixed_cmplx ac3_w_d2[] = { + { 0x00008000, 0x00000000 }, { 0x00000000, 0xffff8000 },}; +fixed_cmplx ac3_w_d4[] = { + { 0x00008000, 0x00000000 }, { 0x00005a82, 0xffffa57e }, { 0x00000000, 0xffff8002 }, { 0xffffa580, 0xffffa580 },}; +fixed_cmplx ac3_w_d8[] = { + { 0x00008000, 0x00000000 }, { 0x00007641, 0xffffcf05 }, { 0x00005a81, 0xffffa580 }, { 0x000030fb, 0xffff89c4 }, + { 0x00000002, 0xffff8007 }, { 0xffffcf09, 0xffff89c6 }, { 0xffffa587, 0xffffa583 }, { 0xffff89cb, 0xffffcf05 },}; +fixed_cmplx ac3_w_d16[] = { + { 0x00008000, 0x00000000 }, { 0x00007d8a, 0xffffe708 }, { 0x00007642, 0xffffcf06 }, { 0x00006a6e, 0xffffb8e7 }, + { 0x00005a84, 0xffffa583 }, { 0x00004720, 0xffff9599 }, { 0x00003100, 0xffff89c6 }, { 0x000018ff, 0xffff827e }, + { 0x00000008, 0xffff8008 }, { 0xffffe711, 0xffff827d }, { 0xffffcf11, 0xffff89c4 }, { 0xffffb8f2, 0xffff9595 }, + { 0xffffa58e, 0xffffa57d }, { 0xffff95a5, 0xffffb8df }, { 0xffff89d2, 0xffffcefd }, { 0xffff8289, 0xffffe6fc },}; +fixed_cmplx ac3_w_d32[] = { + { 0x00008000, 0x00000000 }, { 0x00007f62, 0xfffff375 }, { 0x00007d8a, 0xffffe70a }, { 0x00007a7d, 0xffffdadc }, + { 0x00007642, 0xffffcf0a }, { 0x000070e4, 0xffffc3b1 }, { 0x00006a70, 0xffffb8ed }, { 0x000062f6, 0xffffaed7 }, + { 0x00005a88, 0xffffa58a }, { 0x0000513b, 0xffff9d1b }, { 0x00004726, 0xffff95a1 }, { 0x00003c62, 0xffff8f2d }, + { 0x00003109, 0xffff89cf }, { 0x00002538, 0xffff8593 }, { 0x0000190b, 0xffff8286 }, { 0x00000ca1, 0xffff80ad }, + { 0x00000017, 0xffff800f }, { 0xfffff38d, 0xffff80ab }, { 0xffffe723, 0xffff8281 }, { 0xffffdaf6, 0xffff858b }, + { 0xffffcf25, 0xffff89c4 }, { 0xffffc3cc, 0xffff8f1f }, { 0xffffb908, 0xffff9591 }, { 0xffffaef3, 0xffff9d09 }, + { 0xffffa5a6, 0xffffa575 }, { 0xffff9d37, 0xffffaebf }, { 0xffff95bb, 0xffffb8d2 }, { 0xffff8f46, 0xffffc393 }, + { 0xffff89e7, 0xffffcee9 }, { 0xffff85aa, 0xffffdab8 }, { 0xffff829b, 0xffffe6e3 }, { 0xffff80c1, 0xfffff34b },}; +fixed_cmplx ac3_w_d64[] = { + { 0x00008000, 0x00000000 }, { 0x00007fd8, 0xfffff9b9 }, { 0x00007f62, 0xfffff376 }, { 0x00007e9d, 0xffffed3b }, + { 0x00007d8a, 0xffffe70c }, { 0x00007c29, 0xffffe0ec }, { 0x00007a7c, 0xffffdae0 }, { 0x00007883, 0xffffd4eb }, + { 0x00007641, 0xffffcf11 }, { 0x000073b6, 0xffffc955 }, { 0x000070e3, 0xffffc3bb }, { 0x00006dcb, 0xffffbe45 }, + { 0x00006a6f, 0xffffb8f8 }, { 0x000066d2, 0xffffb3d7 }, { 0x000062f5, 0xffffaee5 }, { 0x00005edc, 0xffffaa25 }, + { 0x00005a89, 0xffffa59a }, { 0x000055fe, 0xffffa147 }, { 0x0000513e, 0xffff9d2e }, { 0x00004c4c, 0xffff9952 }, + { 0x0000472b, 0xffff95b6 }, { 0x000041de, 0xffff925b }, { 0x00003c69, 0xffff8f44 }, { 0x000036cf, 0xffff8c72 }, + { 0x00003113, 0xffff89e7 }, { 0x00002b39, 0xffff87a4 }, { 0x00002544, 0xffff85ac }, { 0x00001f39, 0xffff8400 }, + { 0x0000191b, 0xffff82a0 }, { 0x000012ed, 0xffff818d }, { 0x00000cb4, 0xffff80c8 }, { 0x00000673, 0xffff8051 }, + { 0x0000002d, 0xffff8029 }, { 0xfffff9e8, 0xffff804f }, { 0xfffff3a7, 0xffff80c3 }, { 0xffffed6e, 0xffff8186 }, + { 0xffffe741, 0xffff8297 }, { 0xffffe123, 0xffff83f5 }, { 0xffffdb18, 0xffff859f }, { 0xffffd524, 0xffff8795 }, + { 0xffffcf4b, 0xffff89d5 }, { 0xffffc990, 0xffff8c5d }, { 0xffffc3f7, 0xffff8f2d }, { 0xffffbe82, 0xffff9242 }, + { 0xffffb936, 0xffff959b }, { 0xffffb416, 0xffff9935 }, { 0xffffaf24, 0xffff9d0f }, { 0xffffaa64, 0xffffa125 }, + { 0xffffa5d9, 0xffffa575 }, { 0xffffa186, 0xffffa9fd }, { 0xffff9d6d, 0xffffaeba }, { 0xffff9990, 0xffffb3a9 }, + { 0xffff95f3, 0xffffb8c7 }, { 0xffff9297, 0xffffbe11 }, { 0xffff8f7f, 0xffffc383 }, { 0xffff8cac, 0xffffc91a }, + { 0xffff8a20, 0xffffced3 }, { 0xffff87dc, 0xffffd4aa }, { 0xffff85e2, 0xffffda9c }, { 0xffff8434, 0xffffe0a5 }, + { 0xffff82d2, 0xffffe6c1 }, { 0xffff81be, 0xffffecec }, { 0xffff80f7, 0xfffff323 }, { 0xffff807e, 0xfffff962 },}; +fixed_cmplx *ac3_w_fixedpoints[] = { +ac3_w_d1, ac3_w_d2, ac3_w_d4, ac3_w_d8, ac3_w_d16, ac3_w_d32, ac3_w_d64, }; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_muls_data[] = { +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffff5556, 0xffff788b, 0xffff947d, 0xffffaaab, 0xffffbc46, 0xffffca3f, 0xffffd556, 0xffffde23, +0xffffe520, 0xffffeaab, 0xffffef12, 0xfffff290, 0xfffff556, 0xfffff789, 0xfffff948, 0xfffffaab, +0xfffffbc5, 0xfffffca4, 0xfffffd56, 0xfffffde3, 0xfffffe52, 0xfffffeab, 0xfffffef2, 0xffffff29, +0xffffff56, 0xffffff79, 0xffffff95, 0xffffffab, 0xffffffbd, 0xffffffcb, 0xffffffd6, 0xffffffdf, +0xffffffe6, 0xffffffeb, 0xfffffff0, 0xfffffff3, 0xfffffff6, 0xfffffff8, 0xfffffffa, 0xfffffffb, +0xfffffffc, 0xfffffffd, 0xfffffffe, 0xfffffffe, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x0000aaaa, 0x00008775, 0x00006b83, 0x00005555, 0x000043ba, 0x000035c1, 0x00002aaa, 0x000021dd, +0x00001ae0, 0x00001555, 0x000010ee, 0x00000d70, 0x00000aaa, 0x00000877, 0x000006b8, 0x00000555, +0x0000043b, 0x0000035c, 0x000002aa, 0x0000021d, 0x000001ae, 0x00000155, 0x0000010e, 0x000000d7, +0x000000aa, 0x00000087, 0x0000006b, 0x00000055, 0x00000043, 0x00000035, 0x0000002a, 0x00000021, +0x0000001a, 0x00000015, 0x00000010, 0x0000000d, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, +0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00004924, 0x00003a0d, 0x00002e13, 0x00002492, 0x00001d06, 0x00001709, 0x00001249, 0x00000e83, +0x00000b84, 0x00000924, 0x00000741, 0x000005c2, 0x00000492, 0x000003a0, 0x000002e1, 0x00000249, +0x000001d0, 0x00000170, 0x00000124, 0x000000e8, 0x000000b8, 0x00000092, 0x00000074, 0x0000005c, +0x00000049, 0x0000003a, 0x0000002e, 0x00000024, 0x0000001d, 0x00000017, 0x00000012, 0x0000000e, +0x0000000b, 0x00000009, 0x00000007, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, +0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00002222, 0x00001b17, 0x00001580, 0x00001111, 0x00000d8b, 0x00000ac0, 0x00000888, 0x000006c5, +0x00000560, 0x00000444, 0x00000362, 0x000002b0, 0x00000222, 0x000001b1, 0x00000158, 0x00000111, +0x000000d8, 0x000000ac, 0x00000088, 0x0000006c, 0x00000056, 0x00000044, 0x00000036, 0x0000002b, +0x00000022, 0x0000001b, 0x00000015, 0x00000011, 0x0000000d, 0x0000000a, 0x00000008, 0x00000006, +0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00001084, 0x00000d1b, 0x00000a67, 0x00000842, 0x0000068d, 0x00000533, 0x00000421, 0x00000346, +0x00000299, 0x00000210, 0x000001a3, 0x0000014c, 0x00000108, 0x000000d1, 0x000000a6, 0x00000084, +0x00000068, 0x00000053, 0x00000042, 0x00000034, 0x00000029, 0x00000021, 0x0000001a, 0x00000014, +0x00000010, 0x0000000d, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, +0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000820, 0x00000673, 0x0000051e, 0x00000410, 0x00000339, 0x0000028f, 0x00000208, 0x0000019c, +0x00000147, 0x00000104, 0x000000ce, 0x000000a3, 0x00000082, 0x00000067, 0x00000051, 0x00000041, +0x00000033, 0x00000028, 0x00000020, 0x00000019, 0x00000014, 0x00000010, 0x0000000c, 0x0000000a, +0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, +0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000408, 0x00000333, 0x0000028a, 0x00000204, 0x00000199, 0x00000145, 0x00000102, 0x000000cc, +0x000000a2, 0x00000081, 0x00000066, 0x00000051, 0x00000040, 0x00000033, 0x00000028, 0x00000020, +0x00000019, 0x00000014, 0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, +0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000202, 0x00000197, 0x00000143, 0x00000101, 0x000000cb, 0x000000a1, 0x00000080, 0x00000065, +0x00000050, 0x00000040, 0x00000032, 0x00000028, 0x00000020, 0x00000019, 0x00000014, 0x00000010, +0x0000000c, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, 0x00000002, +0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000100, 0x000000cb, 0x000000a1, 0x00000080, 0x00000065, 0x00000050, 0x00000040, 0x00000032, +0x00000028, 0x00000020, 0x00000019, 0x00000014, 0x00000010, 0x0000000c, 0x0000000a, 0x00000008, +0x00000006, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, +0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000080, 0x00000065, 0x00000050, 0x00000040, 0x00000032, 0x00000028, 0x00000020, 0x00000019, +0x00000014, 0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, +0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000040, 0x00000032, 0x00000028, 0x00000020, 0x00000019, 0x00000014, 0x00000010, 0x0000000c, +0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, +0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000020, 0x00000019, 0x00000014, 0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, +0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, +0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, +0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffff3334, 0xffff5d74, 0xffff7efc, 0xffff999a, 0xffffaeba, 0xffffbf7e, 0xffffcccd, 0xffffd75d, +0xffffdfbf, 0xffffe667, 0xffffebaf, 0xffffefe0, 0xfffff334, 0xfffff5d8, 0xfffff7f0, 0xfffff99a, +0xfffffaec, 0xfffffbf8, 0xfffffccd, 0xfffffd76, 0xfffffdfc, 0xfffffe67, 0xfffffebb, 0xfffffefe, +0xffffff34, 0xffffff5e, 0xffffff7f, 0xffffff9a, 0xffffffaf, 0xffffffc0, 0xffffffcd, 0xffffffd8, +0xffffffe0, 0xffffffe7, 0xffffffec, 0xfffffff0, 0xfffffff4, 0xfffffff6, 0xfffffff8, 0xfffffffa, +0xfffffffb, 0xfffffffc, 0xfffffffd, 0xfffffffe, 0xfffffffe, 0xffffffff, 0xffffffff, 0xffffffff, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffff999a, 0xffffaeba, 0xffffbf7e, 0xffffcccd, 0xffffd75d, 0xffffdfbf, 0xffffe667, 0xffffebaf, +0xffffefe0, 0xfffff334, 0xfffff5d8, 0xfffff7f0, 0xfffff99a, 0xfffffaec, 0xfffffbf8, 0xfffffccd, +0xfffffd76, 0xfffffdfc, 0xfffffe67, 0xfffffebb, 0xfffffefe, 0xffffff34, 0xffffff5e, 0xffffff7f, +0xffffff9a, 0xffffffaf, 0xffffffc0, 0xffffffcd, 0xffffffd8, 0xffffffe0, 0xffffffe7, 0xffffffec, +0xfffffff0, 0xfffffff4, 0xfffffff6, 0xfffffff8, 0xfffffffa, 0xfffffffb, 0xfffffffc, 0xfffffffd, +0xfffffffe, 0xfffffffe, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00006666, 0x00005146, 0x00004082, 0x00003333, 0x000028a3, 0x00002041, 0x00001999, 0x00001451, +0x00001020, 0x00000ccc, 0x00000a28, 0x00000810, 0x00000666, 0x00000514, 0x00000408, 0x00000333, +0x0000028a, 0x00000204, 0x00000199, 0x00000145, 0x00000102, 0x000000cc, 0x000000a2, 0x00000081, +0x00000066, 0x00000051, 0x00000040, 0x00000033, 0x00000028, 0x00000020, 0x00000019, 0x00000014, +0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, 0x00000005, 0x00000004, 0x00000003, +0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x0000cccc, 0x0000a28c, 0x00008104, 0x00006666, 0x00005146, 0x00004082, 0x00003333, 0x000028a3, +0x00002041, 0x00001999, 0x00001451, 0x00001020, 0x00000ccc, 0x00000a28, 0x00000810, 0x00000666, +0x00000514, 0x00000408, 0x00000333, 0x0000028a, 0x00000204, 0x00000199, 0x00000145, 0x00000102, +0x000000cc, 0x000000a2, 0x00000081, 0x00000066, 0x00000051, 0x00000040, 0x00000033, 0x00000028, +0x00000020, 0x00000019, 0x00000014, 0x00000010, 0x0000000c, 0x0000000a, 0x00000008, 0x00000006, +0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffff1c72, 0xffff4b64, 0xffff70a7, 0xffff8e39, 0xffffa5b2, 0xffffb854, 0xffffc71d, 0xffffd2d9, +0xffffdc2a, 0xffffe38f, 0xffffe96d, 0xffffee15, 0xfffff1c8, 0xfffff4b7, 0xfffff70b, 0xfffff8e4, +0xfffffa5c, 0xfffffb86, 0xfffffc72, 0xfffffd2e, 0xfffffdc3, 0xfffffe39, 0xfffffe97, 0xfffffee2, +0xffffff1d, 0xffffff4c, 0xffffff71, 0xffffff8f, 0xffffffa6, 0xffffffb9, 0xffffffc8, 0xffffffd3, +0xffffffdd, 0xffffffe4, 0xffffffea, 0xffffffef, 0xfffffff2, 0xfffffff5, 0xfffffff8, 0xfffffff9, +0xfffffffb, 0xfffffffc, 0xfffffffd, 0xfffffffe, 0xfffffffe, 0xffffffff, 0xffffffff, 0xffffffff, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffff8e39, 0xffffa5b2, 0xffffb854, 0xffffc71d, 0xffffd2d9, 0xffffdc2a, 0xffffe38f, 0xffffe96d, +0xffffee15, 0xfffff1c8, 0xfffff4b7, 0xfffff70b, 0xfffff8e4, 0xfffffa5c, 0xfffffb86, 0xfffffc72, +0xfffffd2e, 0xfffffdc3, 0xfffffe39, 0xfffffe97, 0xfffffee2, 0xffffff1d, 0xffffff4c, 0xffffff71, +0xffffff8f, 0xffffffa6, 0xffffffb9, 0xffffffc8, 0xffffffd3, 0xffffffdd, 0xffffffe4, 0xffffffea, +0xffffffef, 0xfffffff2, 0xfffffff5, 0xfffffff8, 0xfffffff9, 0xfffffffb, 0xfffffffc, 0xfffffffd, +0xfffffffe, 0xfffffffe, 0xffffffff, 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0xffffc71d, 0xffffd2d9, 0xffffdc2a, 0xffffe38f, 0xffffe96d, 0xffffee15, 0xfffff1c8, 0xfffff4b7, +0xfffff70b, 0xfffff8e4, 0xfffffa5c, 0xfffffb86, 0xfffffc72, 0xfffffd2e, 0xfffffdc3, 0xfffffe39, +0xfffffe97, 0xfffffee2, 0xffffff1d, 0xffffff4c, 0xffffff71, 0xffffff8f, 0xffffffa6, 0xffffffb9, +0xffffffc8, 0xffffffd3, 0xffffffdd, 0xffffffe4, 0xffffffea, 0xffffffef, 0xfffffff2, 0xfffffff5, +0xfffffff8, 0xfffffff9, 0xfffffffb, 0xfffffffc, 0xfffffffd, 0xfffffffe, 0xfffffffe, 0xffffffff, +0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x000038e3, 0x00002d27, 0x000023d6, 0x00001c71, 0x00001693, 0x000011eb, 0x00000e38, 0x00000b49, +0x000008f5, 0x0000071c, 0x000005a4, 0x0000047a, 0x0000038e, 0x000002d2, 0x0000023d, 0x000001c7, +0x00000169, 0x0000011e, 0x000000e3, 0x000000b4, 0x0000008f, 0x00000071, 0x0000005a, 0x00000047, +0x00000038, 0x0000002d, 0x00000023, 0x0000001c, 0x00000016, 0x00000011, 0x0000000e, 0x0000000b, +0x00000008, 0x00000007, 0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, +0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x000071c7, 0x00005a4e, 0x000047ac, 0x000038e3, 0x00002d27, 0x000023d6, 0x00001c71, 0x00001693, +0x000011eb, 0x00000e38, 0x00000b49, 0x000008f5, 0x0000071c, 0x000005a4, 0x0000047a, 0x0000038e, +0x000002d2, 0x0000023d, 0x000001c7, 0x00000169, 0x0000011e, 0x000000e3, 0x000000b4, 0x0000008f, +0x00000071, 0x0000005a, 0x00000047, 0x00000038, 0x0000002d, 0x00000023, 0x0000001c, 0x00000016, +0x00000011, 0x0000000e, 0x0000000b, 0x00000008, 0x00000007, 0x00000005, 0x00000004, 0x00000003, +0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x0000e38e, 0x0000b49c, 0x00008f59, 0x000071c7, 0x00005a4e, 0x000047ac, 0x000038e3, 0x00002d27, +0x000023d6, 0x00001c71, 0x00001693, 0x000011eb, 0x00000e38, 0x00000b49, 0x000008f5, 0x0000071c, +0x000005a4, 0x0000047a, 0x0000038e, 0x000002d2, 0x0000023d, 0x000001c7, 0x00000169, 0x0000011e, +0x000000e3, 0x000000b4, 0x0000008f, 0x00000071, 0x0000005a, 0x00000047, 0x00000038, 0x0000002d, +0x00000023, 0x0000001c, 0x00000016, 0x00000011, 0x0000000e, 0x0000000b, 0x00000008, 0x00000007, +0x00000005, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000001, 0x00000001, 0x00000001, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_gainpow2_data[] = { +0x05a82799, 0x04c1bf82, 0x04000000, 0x035d13f3, 0x02d413cc, 0x0260dfc1, 0x02000000, 0x01ae89f9, +0x016a09e6, 0x01306fe0, 0x01000000, 0x00d744fc, 0x00b504f3, 0x009837f0, 0x00800000, 0x006ba27e, +0x005a8279, 0x004c1bf8, 0x00400000, 0x0035d13f, 0x002d413c, 0x00260dfc, 0x00200000, 0x001ae89f, +0x0016a09e, 0x001306fe, 0x00100000, 0x000d744f, 0x000b504f, 0x0009837f, 0x00080000, 0x0006ba27, +0x0005a827, 0x0004c1bf, 0x00040000, 0x00035d13, 0x0002d413, 0x000260df, 0x00020000, 0x0001ae89, +0x00016a09, 0x0001306f, 0x00010000, 0x0000d744, 0x0000b504, 0x00009837, 0x00008000, 0x00006ba2, +0x00005a82, 0x00004c1b, 0x00004000, 0x000035d1, 0x00002d41, 0x0000260d, 0x00002000, 0x00001ae8, +0x000016a0, 0x00001306, 0x00001000, 0x00000d74, 0x00000b50, 0x00000983, 0x00000800, 0x000006ba, +0x000005a8, 0x000004c1, 0x00000400, 0x0000035d, 0x000002d4, 0x00000260, 0x00000200, 0x000001ae, +0x0000016a, 0x00000130, 0x00000100, 0x000000d7, 0x000000b5, 0x00000098, 0x00000080, 0x0000006b, +0x0000005a, 0x0000004c, 0x00000040, 0x00000035, 0x0000002d, 0x00000026, 0x00000020, 0x0000001a, +0x00000016, 0x00000013, 0x00000010, 0x0000000d, 0x0000000b, 0x00000009, 0x00000008, 0x00000006, +0x00000005, 0x00000004, 0x00000004, 0x00000003, 0x00000002, 0x00000002, 0x00000002, 0x00000001, +0x00000001, 0x00000001, 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_ispow_data[] = { +0x00000000, 0x00008000, 0x0001428a, 0x000229d2, 0x00032cbf, 0x00044662, 0x0005738c, 0x0006b1fc, +0x0007ffff, 0x00095c41, 0x000ac5ad, 0x000c3b5d, 0x000dbc8f, 0x000f489e, 0x0010def9, 0x00127f20, +0x001428a2, 0x0015db1b, 0x00179630, 0x0019598d, 0x001b24e8, 0x001cf7fc, 0x001ed28a, 0x0020b458, +0x00229d2e, 0x00248cdb, 0x0026832f, 0x00287fff, 0x002a8322, 0x002c8c70, 0x002e9bc5, 0x0030b0ff, +0x0032cbfd, 0x0034eca0, 0x003712ca, 0x00393e60, 0x003b6f47, 0x003da567, 0x003fe0a5, 0x004220ed, +0x00446627, 0x0046b03e, 0x0048ff1e, 0x004b52b3, 0x004daaeb, 0x005007b4, 0x005268fc, 0x0054ceb2, +0x005738c7, 0x0059a72a, 0x005c19cd, 0x005e90a1, 0x00610b98, 0x00638aa4, 0x00660db9, 0x006894c9, +0x006b1fc8, 0x006daeaa, 0x00704163, 0x0072d7e8, 0x0075722e, 0x0078102b, 0x007ab1d3, 0x007d571e, +0x007fffff, 0x0082ac70, 0x00855c65, 0x00880fd6, 0x008ac6b9, 0x008d8107, 0x00903eb7, 0x0092ffc0, +0x0095c41a, 0x00988bbe, 0x009b56a4, 0x009e24c4, 0x00a0f617, 0x00a3ca96, 0x00a6a239, 0x00a97cfa, +0x00ac5ad2, 0x00af3bbb, 0x00b21fad, 0x00b506a3, 0x00b7f096, 0x00badd81, 0x00bdcd5d, 0x00c0c025, +0x00c3b5d2, 0x00c6ae60, 0x00c9a9c8, 0x00cca805, 0x00cfa912, 0x00d2acea, 0x00d5b387, 0x00d8bce5, +0x00dbc8fe, 0x00ded7ce, 0x00e1e950, 0x00e4fd7e, 0x00e81456, 0x00eb2dd1, 0x00ee49ec, 0x00f168a2, +0x00f489ef, 0x00f7adce, 0x00fad43c, 0x00fdfd34, 0x010128b2, 0x010456b2, 0x01078731, 0x010aba29, +0x010def99, 0x0111277b, 0x011461cc, 0x01179e89, 0x011addae, 0x011e1f37, 0x01216320, 0x0124a967, +0x0127f208, 0x012b3d00, 0x012e8a4b, 0x0131d9e6, 0x01352bce, 0x01387fff, 0x013bd678, 0x013f2f33, +0x01428a2f, 0x0145e768, 0x014946dc, 0x014ca888, 0x01500c68, 0x01537279, 0x0156daba, 0x015a4527, +0x015db1bd, 0x0161207a, 0x0164915b, 0x0168045d, 0x016b797e, 0x016ef0bb, 0x01726a12, 0x0175e580, +0x01796302, 0x017ce297, 0x0180643b, 0x0183e7ec, 0x01876da9, 0x018af56e, 0x018e7f38, 0x01920b07, +0x019598d8, 0x019928a8, 0x019cba74, 0x01a04e3c, 0x01a3e3fd, 0x01a77bb4, 0x01ab155f, 0x01aeb0fd, +0x01b24e8b, 0x01b5ee07, 0x01b98f70, 0x01bd32c2, 0x01c0d7fc, 0x01c47f1d, 0x01c82821, 0x01cbd308, +0x01cf7fcf, 0x01d32e74, 0x01d6def6, 0x01da9153, 0x01de4588, 0x01e1fb94, 0x01e5b375, 0x01e96d29, +0x01ed28af, 0x01f0e604, 0x01f4a528, 0x01f86617, 0x01fc28d2, 0x01ffed55, 0x0203b39f, 0x02077baf, +0x020b4582, 0x020f1118, 0x0212de6e, 0x0216ad83, 0x021a7e56, 0x021e50e4, 0x0222252d, 0x0225fb2e, +0x0229d2e6, 0x022dac54, 0x02318776, 0x0235644b, 0x023942d1, 0x023d2306, 0x024104e9, 0x0244e879, +0x0248cdb5, 0x024cb49a, 0x02509d28, 0x0254875c, 0x02587337, 0x025c60b5, 0x02604fd7, 0x0264409a, +0x026832fd, 0x026c26ff, 0x02701c9f, 0x027413db, 0x02780cb1, 0x027c0722, 0x0280032a, 0x028400ca, +0x0287ffff, 0x028c00ca, 0x02900327, 0x02940716, 0x02980c97, 0x029c13a7, 0x02a01c45, 0x02a42670, +0x02a83228, 0x02ac3f6a, 0x02b04e36, 0x02b45e8b, 0x02b87067, 0x02bc83c9, 0x02c098b1, 0x02c4af1c, +0x02c8c70a, 0x02cce07a, 0x02d0fb6a, 0x02d517da, 0x02d935c9, 0x02dd5534, 0x02e1761c, 0x02e59880, +0x02e9bc5d, 0x02ede1b3, 0x02f20882, 0x02f630c8, 0x02fa5a83, 0x02fe85b4, 0x0302b258, 0x0306e070, +0x030b0ff9, 0x030f40f3, 0x0313735e, 0x0317a737, 0x031bdc7e, 0x03201333, 0x03244b53, 0x032884de, +0x032cbfd4, 0x0330fc33, 0x033539fa, 0x03397929, 0x033db9be, 0x0341fbb8, 0x03463f17, 0x034a83da, +0x034eca00, 0x03531187, 0x03575a6f, 0x035ba4b8, 0x035ff060, 0x03643d66, 0x03688bc9, 0x036cdb8a, +0x03712ca6, 0x03757f1d, 0x0379d2ee, 0x037e2818, 0x03827e9a, 0x0386d674, 0x038b2fa5, 0x038f8a2c, +0x0393e608, 0x03984338, 0x039ca1bc, 0x03a10192, 0x03a562ba, 0x03a9c533, 0x03ae28fd, 0x03b28e16, +0x03b6f47e, 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0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, +0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_aa_cs_data[] = { +0x00006dc2, 0x000070dc, 0x0000798d, 0x00007ddd, 0x00007f6d, 0x00007fe4, 0x00007ffc, 0x00007fff,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_aa_ca_data[] = { +0xffffbe26, 0xffffc39f, 0xffffd7e4, 0xffffe8b8, 0xfffff3e5, 0xfffffac2, 0xfffffe2f, 0xffffff87,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_win_data[] = { +0x00000421, 0x00000db8, 0x000019c7, 0x000029ad, 0x00003fff, 0x00006246, 0x00009ee0, 0x00012a7d, +0x0003df40, 0xfffbc63e, 0xfffe7b01, 0xffff069e, 0xffff4338, 0xffff657e, 0xffff7bd0, 0xffff8bb6, +0xffff97c5, 0xffffa15c, 0xffffa947, 0xffffb006, 0xffffb5eb, 0xffffbb30, 0xffffc000, 0xffffc47a, +0xffffc8b7, 0xffffccca, 0xffffd0c5, 0xffffd4b9, 0xffffd8b4, 0xffffdcc8, 0xffffe104, 0xffffe57e, +0xffffea4e, 0xffffef94, 0xfffff579, 0xfffffc37, 0x00000421, 0x00000db8, 0x000019c7, 0x000029ad, +0x00003fff, 0x00006246, 0x00009ee0, 0x00012a7d, 0x0003df40, 0xfffbc63e, 0xfffe7b01, 0xffff069e, +0xffff4338, 0xffff657e, 0xffff7bd0, 0xffff8bb6, 0xffff97c5, 0xffffa15c, 0xffffa932, 0xffffaf55, +0xffffb41e, 0xffffb7d9, 0xffffbabb, 0xffffbce5, 0xffffbf02, 0xffffc45d, 0xffffcd2e, 0xffffd901, +0xffffe74d, 0xfffff772, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000db8, 0x00003fff, 0x00012a7d, 0xfffe7b01, 0xffff657e, 0xffff97c5, 0xffffb006, 0xffffc000, +0xffffccca, 0xffffd8b4, 0xffffe57e, 0xfffff579, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00002698, 0x0000bba3, 0x00037d32, 0xfffb73f7, 0xfffe3b01, 0xfffedad6, +0xffff2b2b, 0xffff58c3, 0xffff7566, 0xffff88e3, 0xffff96df, 0xffffa145, 0xffffa947, 0xffffb006, +0xffffb5eb, 0xffffbb30, 0xffffc000, 0xffffc47a, 0xffffc8b7, 0xffffccca, 0xffffd0c5, 0xffffd4b9, +0xffffd8b4, 0xffffdcc8, 0xffffe104, 0xffffe57e, 0xffffea4e, 0xffffef94, 0xfffff579, 0xfffffc37,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_COS9_data[] = { +0x00008000, 0x00007e0e, 0x00007847, 0x00006ed9, 0x0000620d, 0x00005246, 0x00004000, 0x00002bc7, +0x0000163a,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tfcos36_data[] = { +0x0000403e, 0x00004241, 0x0000469d, 0x00004e21, 0x00005a82, 0x00006f94, 0x0000976f, 0x0000f746, +0x0002de51,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tfcos12_data[] = { +0x00004241, 0x00005a82, 0x0000f746,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_cos9_data[] = { +0x00007847, 0xffffe9c6, 0xffff9df3,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_cos18_data[] = { +0x00007e0e, 0xffffd439, 0xffffadba,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_COS1_data[] = { +0x00004deb, 0xffff89bf, 0xffffef4b, 0x00007ee7, 0xffffcf05, 0xffff9a74, 0x000030fb, 0xffff89bf, +0x00007641, 0xffffcf05, 0xffffcf05, 0x00007641, 0x000010b5, 0xffffcf05, 0x00004deb, 0xffff9a74, +0x00007641, 0xffff8119, 0xffffef4b, 0x000030fb, 0xffffb215, 0x0000658c, 0xffff89bf, 0x00007ee7, +0xffffcf05, 0x00007641, 0xffff89bf, 0x000030fb, 0x000030fb, 0xffff89bf, 0xffffb215, 0x00007641, +0x000010b5, 0xffff8119, 0x000030fb, 0x0000658c, 0xffff9a74, 0x000030fb, 0x00007ee7, 0x000010b5, +0xffff89bf, 0xffffb215, 0xffff89bf, 0xffffcf05, 0x000030fb, 0x00007641, 0x00007641, 0x000030fb, +0xffff8119, 0xffff89bf, 0xffff9a74, 0xffffb215, 0xffffcf05, 0xffffef4b, 0xffff8119, 0xffff89bf, +0xffff9a74, 0xffffb215, 0xffffcf05, 0xffffef4b, 0xffff89bf, 0xffffcf05, 0x000030fb, 0x00007641, +0x00007641, 0x000030fb, 0xffff9a74, 0x000030fb, 0x00007ee7, 0x000010b5, 0xffff89bf, 0xffffb215,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_win1_data[] = { +0x00000421, 0xfffff248, 0x000019c7, 0xffffd653, 0x00003fff, 0xffff9dba, 0x00009ee0, 0xfffed583, +0x0003df40, 0x000439c2, 0xfffe7b01, 0x0000f962, 0xffff4338, 0x00009a82, 0xffff7bd0, 0x0000744a, +0xffff97c5, 0x00005ea4, 0xffffa947, 0x00004ffa, 0xffffb5eb, 0x000044d0, 0xffffc000, 0x00003b86, +0xffffc8b7, 0x00003336, 0xffffd0c5, 0x00002b47, 0xffffd8b4, 0x00002338, 0xffffe104, 0x00001a82, +0xffffea4e, 0x0000106c, 0xfffff579, 0x000003c9, 0x00000421, 0xfffff248, 0x000019c7, 0xffffd653, +0x00003fff, 0xffff9dba, 0x00009ee0, 0xfffed583, 0x0003df40, 0x000439c2, 0xfffe7b01, 0x0000f962, +0xffff4338, 0x00009a82, 0xffff7bd0, 0x0000744a, 0xffff97c5, 0x00005ea4, 0xffffa932, 0x000050ab, +0xffffb41e, 0x00004827, 0xffffbabb, 0x0000431b, 0xffffbf02, 0x00003ba3, 0xffffcd2e, 0x000026ff, +0xffffe74d, 0x0000088e, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000db8, 0xffffc001, 0x00012a7d, 0x000184ff, 0xffff657e, 0x0000683b, 0xffffb006, 0x00004000, +0xffffccca, 0x0000274c, 0xffffe57e, 0x00000a87, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, +0x00000000, 0x00000000, 0x00002698, 0xffff445d, 0x00037d32, 0x00048c09, 0xfffe3b01, 0x0001252a, +0xffff2b2b, 0x0000a73d, 0xffff7566, 0x0000771d, 0xffff96df, 0x00005ebb, 0xffffa947, 0x00004ffa, +0xffffb5eb, 0x000044d0, 0xffffc000, 0x00003b86, 0xffffc8b7, 0x00003336, 0xffffd0c5, 0x00002b47, +0xffffd8b4, 0x00002338, 0xffffe104, 0x00001a82, 0xffffea4e, 0x0000106c, 0xfffff579, 0x000003c9,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tan1_1_data[] = { +0x00000000, 0x00001b0c, 0x00002ed9, 0x00003fff, 0x00005126, 0x000064f3, 0x00007fff, 0x0000aed9, +0x00012ed9, 0x7fffffff, 0xffff5127, 0xffffd127, 0x00000000, 0x00001b0c, 0x00002ed9, 0x00003fff,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tan2_1_data[] = { +0x00008000, 0x000064f3, 0x00005126, 0x00004000, 0x00002ed9, 0x00001b0c, 0x00000000, 0xffffd127, +0xffff5127, 0x80000000, 0x00012ed9, 0x0000aed9, 0x00008000, 0x000064f3, 0x00005126, 0x00004000,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tan1_2_data[] = { +0x00000000, 0x00002640, 0x00004241, 0x00005a82, 0x000072c2, 0x00008ec3, 0x0000b504, 0x0000f746, +0x0001ac4b, 0x7fffffff, 0xffff08ba, 0xffffbdbf, 0x00000000, 0x00002640, 0x00004241, 0x00005a82,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_tan2_2_data[] = { +0x0000b504, 0x00008ec3, 0x000072c2, 0x00005a82, 0x00004241, 0x00002640, 0x00000000, 0xffffbdbf, +0xffff08ba, 0x80000000, 0x0001ac4b, 0x0000f746, 0x0000b504, 0x00008ec3, 0x000072c2, 0x00005a82,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_pow1_1_data[] = { +0x00008000, 0x00006ba2, 0x00008000, 0x00005a82, 0x00008000, 0x00004c1b, 0x00008000, 0x00004000, +0x00008000, 0x000035d1, 0x00008000, 0x00002d41, 0x00008000, 0x0000260d, 0x00008000, 0x00002000, +0x00008000, 0x00005a82, 0x00008000, 0x00003fff, 0x00008000, 0x00002d41, 0x00008000, 0x00001fff, +0x00008000, 0x000016a0, 0x00008000, 0x00000fff, 0x00008000, 0x00000b50, 0x00008000, 0x000007ff,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_pow2_1_data[] = { +0x00008000, 0x00008000, 0x00006ba2, 0x00008000, 0x00005a82, 0x00008000, 0x00004c1b, 0x00008000, +0x00004000, 0x00008000, 0x000035d1, 0x00008000, 0x00002d41, 0x00008000, 0x0000260d, 0x00008000, +0x00008000, 0x00008000, 0x00005a82, 0x00008000, 0x00003fff, 0x00008000, 0x00002d41, 0x00008000, +0x00001fff, 0x00008000, 0x000016a0, 0x00008000, 0x00000fff, 0x00008000, 0x00000b50, 0x00008000,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_pow1_2_data[] = { +0x0000b504, 0x00009837, 0x0000b504, 0x00008000, 0x0000b504, 0x00006ba2, 0x0000b504, 0x00005a82, +0x0000b504, 0x00004c1b, 0x0000b504, 0x00004000, 0x0000b504, 0x000035d1, 0x0000b504, 0x00002d41, +0x0000b504, 0x00008000, 0x0000b504, 0x00005a82, 0x0000b504, 0x00003fff, 0x0000b504, 0x00002d41, +0x0000b504, 0x00001fff, 0x0000b504, 0x000016a0, 0x0000b504, 0x00000fff, 0x0000b504, 0x00000b50,}; +#endif +#ifdef USE_DATA_TABLES +static long mpeg3_pow2_2_data[] = { +0x0000b504, 0x0000b504, 0x00009837, 0x0000b504, 0x00008000, 0x0000b504, 0x00006ba2, 0x0000b504, +0x00005a82, 0x0000b504, 0x00004c1b, 0x0000b504, 0x00004000, 0x0000b504, 0x000035d1, 0x0000b504, +0x0000b504, 0x0000b504, 0x00008000, 0x0000b504, 0x00005a82, 0x0000b504, 0x00003fff, 0x0000b504, +0x00002d41, 0x0000b504, 0x00001fff, 0x0000b504, 0x000016a0, 0x0000b504, 0x00000fff, 0x0000b504,}; +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/header.c b/core/multimedia/opieplayer/libmpeg3/audio/header.c new file mode 100644 index 0000000..02b5e7c --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/header.c @@ -0,0 +1,163 @@ +#include "mpeg3audio.h" +#include "tables.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" + +#include <stdio.h> + +/* Return 1 if the head check doesn't find a header. */ +int mpeg3audio_head_check(unsigned long head) +{ + if((head & 0xffe00000) != 0xffe00000) return 1; + if(!((head >> 17) & 3)) return 1; + if(((head >> 12) & 0xf) == 0xf) return 1; + if(!((head >> 12) & 0xf)) return 1; + if(((head >> 10) & 0x3) == 0x3 ) return 1; + if(((head >> 19) & 1) == 1 && ((head >> 17) & 3) == 3 && ((head >> 16) & 1) == 1) + return 1; + if((head & 0xffff0000) == 0xfffe0000) return 1; + + return 0; +} + +int mpeg3audio_decode_header(mpeg3audio_t *audio) +{ + if(audio->newhead & (1 << 20)) + { + audio->lsf = (audio->newhead & (1 << 19)) ? 0x0 : 0x1; + audio->mpeg35 = 0; + } + else + { + audio->lsf = 1; + audio->mpeg35 = 1; + } + + audio->layer = 4 - ((audio->newhead >> 17) & 3); + if(audio->mpeg35) + audio->sampling_frequency_code = 6 + ((audio->newhead >> 10) & 0x3); + else + audio->sampling_frequency_code = ((audio->newhead >> 10) & 0x3) + (audio->lsf * 3); + + audio->error_protection = ((audio->newhead >> 16) & 0x1) ^ 0x1; + + audio->bitrate_index = ((audio->newhead >> 12) & 0xf); + audio->padding = ((audio->newhead >> 9) & 0x1); + audio->extension = ((audio->newhead >> 8) & 0x1); + audio->mode = ((audio->newhead >> 6) & 0x3); + audio->mode_ext = ((audio->newhead >> 4) & 0x3); + audio->copyright = ((audio->newhead >> 3) & 0x1); + audio->original = ((audio->newhead >> 2) & 0x1); + audio->emphasis = audio->newhead & 0x3; + audio->channels = (audio->mode == MPG_MD_MONO) ? 1 : 2; + if(audio->channels > 1) + audio->single = -1; + else + audio->single = 3; + + audio->prev_framesize = audio->framesize; + + if(!audio->bitrate_index) return 1; + audio->bitrate = 1000 * mpeg3_tabsel_123[audio->lsf][audio->layer - 1][audio->bitrate_index]; + + switch(audio->layer) + { + case 1: + audio->framesize = (long)mpeg3_tabsel_123[audio->lsf][0][audio->bitrate_index] * 12000; + audio->framesize /= mpeg3_freqs[audio->sampling_frequency_code]; + audio->framesize = ((audio->framesize + audio->padding) << 2) - 4; + break; + case 2: + audio->framesize = (long)mpeg3_tabsel_123[audio->lsf][1][audio->bitrate_index] * 144000; + audio->framesize /= mpeg3_freqs[audio->sampling_frequency_code]; + audio->framesize += audio->padding - 4; + break; + case 3: + if(audio->lsf) + audio->ssize = (audio->channels == 1) ? 9 : 17; + else + audio->ssize = (audio->channels == 1) ? 17 : 32; + if(audio->error_protection) + audio->ssize += 2; + audio->framesize = (long)mpeg3_tabsel_123[audio->lsf][2][audio->bitrate_index] * 144000; + audio->framesize /= mpeg3_freqs[audio->sampling_frequency_code] << (audio->lsf); + audio->framesize = audio->framesize + audio->padding - 4; + break; + default: + return 1; + } + + if(audio->framesize > MAXFRAMESIZE) return 1; + + return 0; +} + +int mpeg3audio_read_frame_body(mpeg3audio_t *audio) +{ + int i; + for(i = 0; i < audio->framesize; i++) + { + audio->bsbuf[i] = mpeg3bits_getbits(audio->astream, 8); + } + return 0; +} + +/* Seek to the start of the previous header */ +int mpeg3audio_prev_header(mpeg3audio_t *audio) +{ + int result = 0, i, len = (int)audio->avg_framesize; + + for(i = 0; i < len && !result; i++) + { + mpeg3bits_getbits_reverse(audio->astream, 8); + } +/* Get reading in the forward direction again. */ + result |= mpeg3bits_refill(audio->astream); + return result; +} + +/* Read the next header */ +int mpeg3audio_read_header(mpeg3audio_t *audio) +{ + unsigned int code; + int i; + int attempt = 0; + int result = 0; + + switch(audio->format) + { + case AUDIO_AC3: + result = mpeg3audio_read_ac3_header(audio); + break; + + case AUDIO_MPEG: +/* Layer 1 not supported */ + if(audio->layer == 1) + { + fprintf(stderr, "mpeg3audio_new: layer 1 not supported\n"); + result = 1; + } + audio->newhead = mpeg3bits_showbits(audio->astream, 32); + if(!mpeg3bits_eof(audio->astream) && + (mpeg3audio_head_check(audio->newhead) || mpeg3audio_decode_header(audio))) + { + do + { + attempt++; + mpeg3bits_getbyte_noptr(audio->astream); + audio->newhead = mpeg3bits_showbits(audio->astream, 32); + }while(!mpeg3bits_eof(audio->astream) && + attempt < 65536 && + (mpeg3audio_head_check(audio->newhead) || mpeg3audio_decode_header(audio))); + } + +/* Skip the 4 bytes containing the header */ + mpeg3bits_getbits(audio->astream, 32); + break; + + case AUDIO_PCM: + mpeg3audio_read_pcm_header(audio); + break; + } + return mpeg3bits_eof(audio->astream); +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/huffman.h b/core/multimedia/opieplayer/libmpeg3/audio/huffman.h new file mode 100644 index 0000000..a9c8fff --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/huffman.h @@ -0,0 +1,355 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef HUFFMAN_H +#define HUFFMAN_H + +/* + * huffman tables ... recalcualted to work with my optimzed + * decoder scheme (MH) + * + * probably we could save a few bytes of memory, because the + * smaller tables are often the part of a bigger table + */ + +struct newhuff +{ + unsigned int linbits; + short *table; +}; + +static short mpeg3_tab0[] = +{ + 0 +}; + +static short mpeg3_tab1[] = +{ + -5, -3, -1, 17, 1, 16, 0 +}; + +static short mpeg3_tab2[] = +{ + -15, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 17, -1, 1, + 16, 0 +}; + +static short mpeg3_tab3[] = +{ + -13, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 16, 17, -1, + 1, 0 +}; + +static short mpeg3_tab5[] = +{ + -29, -25, -23, -15, -7, -5, -3, -1, 51, 35, 50, 49, -3, -1, 19, + 3, -1, 48, 34, -3, -1, 18, 33, -1, 2, 32, 17, -1, 1, 16, + 0 +}; + +static short mpeg3_tab6[] = +{ + -25, -19, -13, -9, -5, -3, -1, 51, 3, 35, -1, 50, 48, -1, 19, + 49, -3, -1, 34, 2, 18, -3, -1, 33, 32, 1, -1, 17, -1, 16, + 0 +}; + +static short mpeg3_tab7[] = +{ + -69, -65, -57, -39, -29, -17, -11, -7, -3, -1, 85, 69, -1, 84, 83, + -1, 53, 68, -3, -1, 37, 82, 21, -5, -1, 81, -1, 5, 52, -1, + 80, -1, 67, 51, -5, -3, -1, 36, 66, 20, -1, 65, 64, -11, -7, + -3, -1, 4, 35, -1, 50, 3, -1, 19, 49, -3, -1, 48, 34, 18, + -5, -1, 33, -1, 2, 32, 17, -1, 1, 16, 0 +}; + +static short mpeg3_tab8[] = +{ + -65, -63, -59, -45, -31, -19, -13, -7, -5, -3, -1, 85, 84, 69, 83, + -3, -1, 53, 68, 37, -3, -1, 82, 5, 21, -5, -1, 81, -1, 52, + 67, -3, -1, 80, 51, 36, -5, -3, -1, 66, 20, 65, -3, -1, 4, + 64, -1, 35, 50, -9, -7, -3, -1, 19, 49, -1, 3, 48, 34, -1, + 2, 32, -1, 18, 33, 17, -3, -1, 1, 16, 0 +}; + +static short mpeg3_tab9[] = +{ + -63, -53, -41, -29, -19, -11, -5, -3, -1, 85, 69, 53, -1, 83, -1, + 84, 5, -3, -1, 68, 37, -1, 82, 21, -3, -1, 81, 52, -1, 67, + -1, 80, 4, -7, -3, -1, 36, 66, -1, 51, 64, -1, 20, 65, -5, + -3, -1, 35, 50, 19, -1, 49, -1, 3, 48, -5, -3, -1, 34, 2, + 18, -1, 33, 32, -3, -1, 17, 1, -1, 16, 0 +}; + +static short mpeg3_tab10[] = +{ +-125,-121,-111, -83, -55, -35, -21, -13, -7, -3, -1, 119, 103, -1, 118, + 87, -3, -1, 117, 102, 71, -3, -1, 116, 86, -1, 101, 55, -9, -3, + -1, 115, 70, -3, -1, 85, 84, 99, -1, 39, 114, -11, -5, -3, -1, + 100, 7, 112, -1, 98, -1, 69, 53, -5, -1, 6, -1, 83, 68, 23, + -17, -5, -1, 113, -1, 54, 38, -5, -3, -1, 37, 82, 21, -1, 81, + -1, 52, 67, -3, -1, 22, 97, -1, 96, -1, 5, 80, -19, -11, -7, + -3, -1, 36, 66, -1, 51, 4, -1, 20, 65, -3, -1, 64, 35, -1, + 50, 3, -3, -1, 19, 49, -1, 48, 34, -7, -3, -1, 18, 33, -1, + 2, 32, 17, -1, 1, 16, 0 +}; + +static short mpeg3_tab11[] = +{ +-121,-113, -89, -59, -43, -27, -17, -7, -3, -1, 119, 103, -1, 118, 117, + -3, -1, 102, 71, -1, 116, -1, 87, 85, -5, -3, -1, 86, 101, 55, + -1, 115, 70, -9, -7, -3, -1, 69, 84, -1, 53, 83, 39, -1, 114, + -1, 100, 7, -5, -1, 113, -1, 23, 112, -3, -1, 54, 99, -1, 96, + -1, 68, 37, -13, -7, -5, -3, -1, 82, 5, 21, 98, -3, -1, 38, + 6, 22, -5, -1, 97, -1, 81, 52, -5, -1, 80, -1, 67, 51, -1, + 36, 66, -15, -11, -7, -3, -1, 20, 65, -1, 4, 64, -1, 35, 50, + -1, 19, 49, -5, -3, -1, 3, 48, 34, 33, -5, -1, 18, -1, 2, + 32, 17, -3, -1, 1, 16, 0 +}; + +static short mpeg3_tab12[] = +{ +-115, -99, -73, -45, -27, -17, -9, -5, -3, -1, 119, 103, 118, -1, 87, + 117, -3, -1, 102, 71, -1, 116, 101, -3, -1, 86, 55, -3, -1, 115, + 85, 39, -7, -3, -1, 114, 70, -1, 100, 23, -5, -1, 113, -1, 7, + 112, -1, 54, 99, -13, -9, -3, -1, 69, 84, -1, 68, -1, 6, 5, + -1, 38, 98, -5, -1, 97, -1, 22, 96, -3, -1, 53, 83, -1, 37, + 82, -17, -7, -3, -1, 21, 81, -1, 52, 67, -5, -3, -1, 80, 4, + 36, -1, 66, 20, -3, -1, 51, 65, -1, 35, 50, -11, -7, -5, -3, + -1, 64, 3, 48, 19, -1, 49, 34, -1, 18, 33, -7, -5, -3, -1, + 2, 32, 0, 17, -1, 1, 16 +}; + +static short mpeg3_tab13[] = +{ +-509,-503,-475,-405,-333,-265,-205,-153,-115, -83, -53, -35, -21, -13, -9, + -7, -5, -3, -1, 254, 252, 253, 237, 255, -1, 239, 223, -3, -1, 238, + 207, -1, 222, 191, -9, -3, -1, 251, 206, -1, 220, -1, 175, 233, -1, + 236, 221, -9, -5, -3, -1, 250, 205, 190, -1, 235, 159, -3, -1, 249, + 234, -1, 189, 219, -17, -9, -3, -1, 143, 248, -1, 204, -1, 174, 158, + -5, -1, 142, -1, 127, 126, 247, -5, -1, 218, -1, 173, 188, -3, -1, + 203, 246, 111, -15, -7, -3, -1, 232, 95, -1, 157, 217, -3, -1, 245, + 231, -1, 172, 187, -9, -3, -1, 79, 244, -3, -1, 202, 230, 243, -1, + 63, -1, 141, 216, -21, -9, -3, -1, 47, 242, -3, -1, 110, 156, 15, + -5, -3, -1, 201, 94, 171, -3, -1, 125, 215, 78, -11, -5, -3, -1, + 200, 214, 62, -1, 185, -1, 155, 170, -1, 31, 241, -23, -13, -5, -1, + 240, -1, 186, 229, -3, -1, 228, 140, -1, 109, 227, -5, -1, 226, -1, + 46, 14, -1, 30, 225, -15, -7, -3, -1, 224, 93, -1, 213, 124, -3, + -1, 199, 77, -1, 139, 184, -7, -3, -1, 212, 154, -1, 169, 108, -1, + 198, 61, -37, -21, -9, -5, -3, -1, 211, 123, 45, -1, 210, 29, -5, + -1, 183, -1, 92, 197, -3, -1, 153, 122, 195, -7, -5, -3, -1, 167, + 151, 75, 209, -3, -1, 13, 208, -1, 138, 168, -11, -7, -3, -1, 76, + 196, -1, 107, 182, -1, 60, 44, -3, -1, 194, 91, -3, -1, 181, 137, + 28, -43, -23, -11, -5, -1, 193, -1, 152, 12, -1, 192, -1, 180, 106, + -5, -3, -1, 166, 121, 59, -1, 179, -1, 136, 90, -11, -5, -1, 43, + -1, 165, 105, -1, 164, -1, 120, 135, -5, -1, 148, -1, 119, 118, 178, + -11, -3, -1, 27, 177, -3, -1, 11, 176, -1, 150, 74, -7, -3, -1, + 58, 163, -1, 89, 149, -1, 42, 162, -47, -23, -9, -3, -1, 26, 161, + -3, -1, 10, 104, 160, -5, -3, -1, 134, 73, 147, -3, -1, 57, 88, + -1, 133, 103, -9, -3, -1, 41, 146, -3, -1, 87, 117, 56, -5, -1, + 131, -1, 102, 71, -3, -1, 116, 86, -1, 101, 115, -11, -3, -1, 25, + 145, -3, -1, 9, 144, -1, 72, 132, -7, -5, -1, 114, -1, 70, 100, + 40, -1, 130, 24, -41, -27, -11, -5, -3, -1, 55, 39, 23, -1, 113, + -1, 85, 7, -7, -3, -1, 112, 54, -1, 99, 69, -3, -1, 84, 38, + -1, 98, 53, -5, -1, 129, -1, 8, 128, -3, -1, 22, 97, -1, 6, + 96, -13, -9, -5, -3, -1, 83, 68, 37, -1, 82, 5, -1, 21, 81, + -7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20, -19, -11, + -5, -1, 65, -1, 4, 64, -3, -1, 35, 50, 19, -3, -1, 49, 3, + -1, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16, + 0 +}; + +static short mpeg3_tab15[] = +{ +-495,-445,-355,-263,-183,-115, -77, -43, -27, -13, -7, -3, -1, 255, 239, + -1, 254, 223, -1, 238, -1, 253, 207, -7, -3, -1, 252, 222, -1, 237, + 191, -1, 251, -1, 206, 236, -7, -3, -1, 221, 175, -1, 250, 190, -3, + -1, 235, 205, -1, 220, 159, -15, -7, -3, -1, 249, 234, -1, 189, 219, + -3, -1, 143, 248, -1, 204, 158, -7, -3, -1, 233, 127, -1, 247, 173, + -3, -1, 218, 188, -1, 111, -1, 174, 15, -19, -11, -3, -1, 203, 246, + -3, -1, 142, 232, -1, 95, 157, -3, -1, 245, 126, -1, 231, 172, -9, + -3, -1, 202, 187, -3, -1, 217, 141, 79, -3, -1, 244, 63, -1, 243, + 216, -33, -17, -9, -3, -1, 230, 47, -1, 242, -1, 110, 240, -3, -1, + 31, 241, -1, 156, 201, -7, -3, -1, 94, 171, -1, 186, 229, -3, -1, + 125, 215, -1, 78, 228, -15, -7, -3, -1, 140, 200, -1, 62, 109, -3, + -1, 214, 227, -1, 155, 185, -7, -3, -1, 46, 170, -1, 226, 30, -5, + -1, 225, -1, 14, 224, -1, 93, 213, -45, -25, -13, -7, -3, -1, 124, + 199, -1, 77, 139, -1, 212, -1, 184, 154, -7, -3, -1, 169, 108, -1, + 198, 61, -1, 211, 210, -9, -5, -3, -1, 45, 13, 29, -1, 123, 183, + -5, -1, 209, -1, 92, 208, -1, 197, 138, -17, -7, -3, -1, 168, 76, + -1, 196, 107, -5, -1, 182, -1, 153, 12, -1, 60, 195, -9, -3, -1, + 122, 167, -1, 166, -1, 192, 11, -1, 194, -1, 44, 91, -55, -29, -15, + -7, -3, -1, 181, 28, -1, 137, 152, -3, -1, 193, 75, -1, 180, 106, + -5, -3, -1, 59, 121, 179, -3, -1, 151, 136, -1, 43, 90, -11, -5, + -1, 178, -1, 165, 27, -1, 177, -1, 176, 105, -7, -3, -1, 150, 74, + -1, 164, 120, -3, -1, 135, 58, 163, -17, -7, -3, -1, 89, 149, -1, + 42, 162, -3, -1, 26, 161, -3, -1, 10, 160, 104, -7, -3, -1, 134, + 73, -1, 148, 57, -5, -1, 147, -1, 119, 9, -1, 88, 133, -53, -29, + -13, -7, -3, -1, 41, 103, -1, 118, 146, -1, 145, -1, 25, 144, -7, + -3, -1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 71, -7, + -3, -1, 40, 130, -1, 24, 129, -7, -3, -1, 116, 8, -1, 128, 86, + -3, -1, 101, 55, -1, 115, 70, -17, -7, -3, -1, 39, 114, -1, 100, + 23, -3, -1, 85, 113, -3, -1, 7, 112, 54, -7, -3, -1, 99, 69, + -1, 84, 38, -3, -1, 98, 22, -3, -1, 6, 96, 53, -33, -19, -9, + -5, -1, 97, -1, 83, 68, -1, 37, 82, -3, -1, 21, 81, -3, -1, + 5, 80, 52, -7, -3, -1, 67, 36, -1, 66, 51, -1, 65, -1, 20, + 4, -9, -3, -1, 35, 50, -3, -1, 64, 3, 19, -3, -1, 49, 48, + 34, -9, -7, -3, -1, 18, 33, -1, 2, 32, 17, -3, -1, 1, 16, + 0 +}; + +static short mpeg3_tab16[] = +{ +-509,-503,-461,-323,-103, -37, -27, -15, -7, -3, -1, 239, 254, -1, 223, + 253, -3, -1, 207, 252, -1, 191, 251, -5, -1, 175, -1, 250, 159, -3, + -1, 249, 248, 143, -7, -3, -1, 127, 247, -1, 111, 246, 255, -9, -5, + -3, -1, 95, 245, 79, -1, 244, 243, -53, -1, 240, -1, 63, -29, -19, + -13, -7, -5, -1, 206, -1, 236, 221, 222, -1, 233, -1, 234, 217, -1, + 238, -1, 237, 235, -3, -1, 190, 205, -3, -1, 220, 219, 174, -11, -5, + -1, 204, -1, 173, 218, -3, -1, 126, 172, 202, -5, -3, -1, 201, 125, + 94, 189, 242, -93, -5, -3, -1, 47, 15, 31, -1, 241, -49, -25, -13, + -5, -1, 158, -1, 188, 203, -3, -1, 142, 232, -1, 157, 231, -7, -3, + -1, 187, 141, -1, 216, 110, -1, 230, 156, -13, -7, -3, -1, 171, 186, + -1, 229, 215, -1, 78, -1, 228, 140, -3, -1, 200, 62, -1, 109, -1, + 214, 155, -19, -11, -5, -3, -1, 185, 170, 225, -1, 212, -1, 184, 169, + -5, -1, 123, -1, 183, 208, 227, -7, -3, -1, 14, 224, -1, 93, 213, + -3, -1, 124, 199, -1, 77, 139, -75, -45, -27, -13, -7, -3, -1, 154, + 108, -1, 198, 61, -3, -1, 92, 197, 13, -7, -3, -1, 138, 168, -1, + 153, 76, -3, -1, 182, 122, 60, -11, -5, -3, -1, 91, 137, 28, -1, + 192, -1, 152, 121, -1, 226, -1, 46, 30, -15, -7, -3, -1, 211, 45, + -1, 210, 209, -5, -1, 59, -1, 151, 136, 29, -7, -3, -1, 196, 107, + -1, 195, 167, -1, 44, -1, 194, 181, -23, -13, -7, -3, -1, 193, 12, + -1, 75, 180, -3, -1, 106, 166, 179, -5, -3, -1, 90, 165, 43, -1, + 178, 27, -13, -5, -1, 177, -1, 11, 176, -3, -1, 105, 150, -1, 74, + 164, -5, -3, -1, 120, 135, 163, -3, -1, 58, 89, 42, -97, -57, -33, + -19, -11, -5, -3, -1, 149, 104, 161, -3, -1, 134, 119, 148, -5, -3, + -1, 73, 87, 103, 162, -5, -1, 26, -1, 10, 160, -3, -1, 57, 147, + -1, 88, 133, -9, -3, -1, 41, 146, -3, -1, 118, 9, 25, -5, -1, + 145, -1, 144, 72, -3, -1, 132, 117, -1, 56, 131, -21, -11, -5, -3, + -1, 102, 40, 130, -3, -1, 71, 116, 24, -3, -1, 129, 128, -3, -1, + 8, 86, 55, -9, -5, -1, 115, -1, 101, 70, -1, 39, 114, -5, -3, + -1, 100, 85, 7, 23, -23, -13, -5, -1, 113, -1, 112, 54, -3, -1, + 99, 69, -1, 84, 38, -3, -1, 98, 22, -1, 97, -1, 6, 96, -9, + -5, -1, 83, -1, 53, 68, -1, 37, 82, -1, 81, -1, 21, 5, -33, + -23, -13, -7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20, + -5, -1, 65, -1, 4, 64, -1, 35, 50, -3, -1, 19, 49, -3, -1, + 3, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16, + 0 +}; + +static short mpeg3_tab24[] = +{ +-451,-117, -43, -25, -15, -7, -3, -1, 239, 254, -1, 223, 253, -3, -1, + 207, 252, -1, 191, 251, -5, -1, 250, -1, 175, 159, -1, 249, 248, -9, + -5, -3, -1, 143, 127, 247, -1, 111, 246, -3, -1, 95, 245, -1, 79, + 244, -71, -7, -3, -1, 63, 243, -1, 47, 242, -5, -1, 241, -1, 31, + 240, -25, -9, -1, 15, -3, -1, 238, 222, -1, 237, 206, -7, -3, -1, + 236, 221, -1, 190, 235, -3, -1, 205, 220, -1, 174, 234, -15, -7, -3, + -1, 189, 219, -1, 204, 158, -3, -1, 233, 173, -1, 218, 188, -7, -3, + -1, 203, 142, -1, 232, 157, -3, -1, 217, 126, -1, 231, 172, 255,-235, +-143, -77, -45, -25, -15, -7, -3, -1, 202, 187, -1, 141, 216, -5, -3, + -1, 14, 224, 13, 230, -5, -3, -1, 110, 156, 201, -1, 94, 186, -9, + -5, -1, 229, -1, 171, 125, -1, 215, 228, -3, -1, 140, 200, -3, -1, + 78, 46, 62, -15, -7, -3, -1, 109, 214, -1, 227, 155, -3, -1, 185, + 170, -1, 226, 30, -7, -3, -1, 225, 93, -1, 213, 124, -3, -1, 199, + 77, -1, 139, 184, -31, -15, -7, -3, -1, 212, 154, -1, 169, 108, -3, + -1, 198, 61, -1, 211, 45, -7, -3, -1, 210, 29, -1, 123, 183, -3, + -1, 209, 92, -1, 197, 138, -17, -7, -3, -1, 168, 153, -1, 76, 196, + -3, -1, 107, 182, -3, -1, 208, 12, 60, -7, -3, -1, 195, 122, -1, + 167, 44, -3, -1, 194, 91, -1, 181, 28, -57, -35, -19, -7, -3, -1, + 137, 152, -1, 193, 75, -5, -3, -1, 192, 11, 59, -3, -1, 176, 10, + 26, -5, -1, 180, -1, 106, 166, -3, -1, 121, 151, -3, -1, 160, 9, + 144, -9, -3, -1, 179, 136, -3, -1, 43, 90, 178, -7, -3, -1, 165, + 27, -1, 177, 105, -1, 150, 164, -17, -9, -5, -3, -1, 74, 120, 135, + -1, 58, 163, -3, -1, 89, 149, -1, 42, 162, -7, -3, -1, 161, 104, + -1, 134, 119, -3, -1, 73, 148, -1, 57, 147, -63, -31, -15, -7, -3, + -1, 88, 133, -1, 41, 103, -3, -1, 118, 146, -1, 25, 145, -7, -3, + -1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 40, -17, -7, + -3, -1, 130, 24, -1, 71, 116, -5, -1, 129, -1, 8, 128, -1, 86, + 101, -7, -5, -1, 23, -1, 7, 112, 115, -3, -1, 55, 39, 114, -15, + -7, -3, -1, 70, 100, -1, 85, 113, -3, -1, 54, 99, -1, 69, 84, + -7, -3, -1, 38, 98, -1, 22, 97, -5, -3, -1, 6, 96, 53, -1, + 83, 68, -51, -37, -23, -15, -9, -3, -1, 37, 82, -1, 21, -1, 5, + 80, -1, 81, -1, 52, 67, -3, -1, 36, 66, -1, 51, 20, -9, -5, + -1, 65, -1, 4, 64, -1, 35, 50, -1, 19, 49, -7, -5, -3, -1, + 3, 48, 34, 18, -1, 33, -1, 2, 32, -3, -1, 17, 1, -1, 16, + 0 +}; + +static short mpeg3_tab_c0[] = +{ + -29, -21, -13, -7, -3, -1, 11, 15, -1, 13, 14, -3, -1, 7, 5, + 9, -3, -1, 6, 3, -1, 10, 12, -3, -1, 2, 1, -1, 4, 8, + 0 +}; + +static short mpeg3_tab_c1[] = +{ + -15, -7, -3, -1, 15, 14, -1, 13, 12, -3, -1, 11, 10, -1, 9, + 8, -7, -3, -1, 7, 6, -1, 5, 4, -3, -1, 3, 2, -1, 1, + 0 +}; + + + +static struct newhuff mpeg3_ht[] = +{ + { /* 0 */ 0 , mpeg3_tab0 } , + { /* 2 */ 0 , mpeg3_tab1 } , + { /* 3 */ 0 , mpeg3_tab2 } , + { /* 3 */ 0 , mpeg3_tab3 } , + { /* 0 */ 0 , mpeg3_tab0 } , + { /* 4 */ 0 , mpeg3_tab5 } , + { /* 4 */ 0 , mpeg3_tab6 } , + { /* 6 */ 0 , mpeg3_tab7 } , + { /* 6 */ 0 , mpeg3_tab8 } , + { /* 6 */ 0 , mpeg3_tab9 } , + { /* 8 */ 0 , mpeg3_tab10 } , + { /* 8 */ 0 , mpeg3_tab11 } , + { /* 8 */ 0 , mpeg3_tab12 } , + { /* 16 */ 0 , mpeg3_tab13 } , + { /* 0 */ 0 , mpeg3_tab0 } , + { /* 16 */ 0 , mpeg3_tab15 } , + + { /* 16 */ 1 , mpeg3_tab16 } , + { /* 16 */ 2 , mpeg3_tab16 } , + { /* 16 */ 3 , mpeg3_tab16 } , + { /* 16 */ 4 , mpeg3_tab16 } , + { /* 16 */ 6 , mpeg3_tab16 } , + { /* 16 */ 8 , mpeg3_tab16 } , + { /* 16 */ 10, mpeg3_tab16 } , + { /* 16 */ 13, mpeg3_tab16 } , + { /* 16 */ 4 , mpeg3_tab24 } , + { /* 16 */ 5 , mpeg3_tab24 } , + { /* 16 */ 6 , mpeg3_tab24 } , + { /* 16 */ 7 , mpeg3_tab24 } , + { /* 16 */ 8 , mpeg3_tab24 } , + { /* 16 */ 9 , mpeg3_tab24 } , + { /* 16 */ 11, mpeg3_tab24 } , + { /* 16 */ 13, mpeg3_tab24 } +}; + +static struct newhuff mpeg3_htc[] = +{ + { /* 1 , 1 , */ 0 , mpeg3_tab_c0 } , + { /* 1 , 1 , */ 0 , mpeg3_tab_c1 } +}; + + +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/layer1.c b/core/multimedia/opieplayer/libmpeg3/audio/layer1.c new file mode 100644 index 0000000..0c355f3 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/layer1.c @@ -0,0 +1,6 @@ +#include "mpeg3audio.h" + +int mpeg3audio_dolayer1(mpeg3audio_t *audio) +{ + ; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/layer2.c b/core/multimedia/opieplayer/libmpeg3/audio/layer2.c new file mode 100644 index 0000000..01582fe --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/layer2.c @@ -0,0 +1,418 @@ +/* + * most other tables are calculated on program start (which is (of course) + * not ISO-conform) .. + * Layer-3 huffman table is in huffman.h + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "tables.h" + +struct al_table alloc_0[] = { + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767} }; + +struct al_table alloc_1[] = { + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{3,-3},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255},{10,-511}, + {11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {3,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767}, + {2,0},{5,3},{7,5},{16,-32767} }; + +struct al_table alloc_2[] = { + {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255}, + {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383}, + {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255}, + {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} }; + +struct al_table alloc_3[] = { + {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255}, + {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383}, + {4,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127},{9,-255}, + {10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191},{15,-16383}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63} }; + +struct al_table alloc_4[] = { + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191}, + {4,0},{5,3},{7,5},{3,-3},{10,9},{4,-7},{5,-15},{6,-31},{7,-63},{8,-127}, + {9,-255},{10,-511},{11,-1023},{12,-2047},{13,-4095},{14,-8191}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {3,0},{5,3},{7,5},{10,9},{4,-7},{5,-15},{6,-31},{7,-63}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9}, + {2,0},{5,3},{7,5},{10,9} }; + + +int mpeg3audio_II_select_table(mpeg3audio_t *audio) +{ + static int translate[3][2][16] = + {{{ 0,2,2,2,2,2,2,0,0,0,1,1,1,1,1,0}, + { 0,2,2,0,0,0,1,1,1,1,1,1,1,1,1,0}}, + {{ 0,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0}, + { 0,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0}}, + {{ 0,3,3,3,3,3,3,0,0,0,1,1,1,1,1,0}, + { 0,3,3,0,0,0,1,1,1,1,1,1,1,1,1,0}}}; + int table, sblim; + static struct al_table *tables[5] = + {alloc_0, alloc_1, alloc_2, alloc_3, alloc_4}; + static int sblims[5] = {27, 30, 8, 12, 30}; + + if(audio->lsf) + table = 4; + else + table = translate[audio->sampling_frequency_code][2 - audio->channels][audio->bitrate_index]; + sblim = sblims[table]; + + audio->alloc = tables[table]; + audio->II_sblimit = sblim; + return 0; +} + +int mpeg3audio_II_step_one(mpeg3audio_t *audio, unsigned int *bit_alloc, int *scale) +{ + int stereo = audio->channels - 1; + int sblimit = audio->II_sblimit; + int jsbound = audio->jsbound; + int sblimit2 = audio->II_sblimit << stereo; + struct al_table *alloc1 = audio->alloc; + int i, result = 0; + unsigned int *scfsi_buf = audio->layer2_scfsi_buf; + unsigned int *scfsi, *bita; + int sc, step; + + bita = bit_alloc; + if(stereo) + { +/* Stereo */ + for(i = jsbound;i ; i--, alloc1 += (1 << step)) + { + *bita++ = (char)mpeg3bits_getbits(audio->astream, step = alloc1->bits); + *bita++ = (char)mpeg3bits_getbits(audio->astream, step); + } + for(i = sblimit-jsbound; i; i--, alloc1 += (1 << step)) + { + bita[0] = (char)mpeg3bits_getbits(audio->astream, step = alloc1->bits); + bita[1] = bita[0]; + bita += 2; + } + bita = bit_alloc; + scfsi = scfsi_buf; + for(i = sblimit2; i; i--) + if(*bita++) *scfsi++ = (char)mpeg3bits_getbits(audio->astream, 2); + } + else + { +/* mono */ + for(i = sblimit; i; i--, alloc1 += (1 << step)) + *bita++ = (char)mpeg3bits_getbits(audio->astream, step = alloc1->bits); + bita = bit_alloc; + scfsi = scfsi_buf; + for(i = sblimit; i; i--) if (*bita++) *scfsi++ = (char)mpeg3bits_getbits(audio->astream, 2); + } + + bita = bit_alloc; + scfsi = scfsi_buf; + for(i = sblimit2; i; i--) + { + if(*bita++) + switch(*scfsi++) + { + case 0: + *scale++ = mpeg3bits_getbits(audio->astream, 6); + *scale++ = mpeg3bits_getbits(audio->astream, 6); + *scale++ = mpeg3bits_getbits(audio->astream, 6); + break; + case 1 : + *scale++ = sc = mpeg3bits_getbits(audio->astream, 6); + *scale++ = sc; + *scale++ = mpeg3bits_getbits(audio->astream, 6); + break; + case 2: + *scale++ = sc = mpeg3bits_getbits(audio->astream, 6); + *scale++ = sc; + *scale++ = sc; + break; + default: /* case 3 */ + *scale++ = mpeg3bits_getbits(audio->astream, 6); + *scale++ = sc = mpeg3bits_getbits(audio->astream, 6); + *scale++ = sc; + break; + } + } + return result | mpeg3bits_error(audio->astream); +} + +int mpeg3audio_II_step_two(mpeg3audio_t *audio, unsigned int *bit_alloc, mpeg3_real_t fraction[2][4][SBLIMIT], int *scale, int x1) +{ + int i, j, k, ba, result = 0; + int channels = audio->channels; + int sblimit = audio->II_sblimit; + int jsbound = audio->jsbound; + struct al_table *alloc2, *alloc1 = audio->alloc; + unsigned int *bita = bit_alloc; + int d1, step, test; + + for(i = 0; i < jsbound; i++, alloc1 += (1 << step)) + { + step = alloc1->bits; + for(j = 0; j < channels; j++) + { + if(ba = *bita++) + { + k = (alloc2 = alloc1 + ba)->bits; + if((d1 = alloc2->d) < 0) + { + mpeg3_real_t cm = mpeg3_muls[k][scale[x1]]; + + fraction[j][0][i] = ((mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + fraction[j][1][i] = ((mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + fraction[j][2][i] = ((mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + } + else + { + static int *table[] = + {0, 0, 0, mpeg3_grp_3tab, 0, mpeg3_grp_5tab, 0, 0, 0, mpeg3_grp_9tab}; + unsigned int idx, *tab, m = scale[x1]; + + idx = (unsigned int)mpeg3bits_getbits(audio->astream, k); + tab = (unsigned int*)(table[d1] + idx + idx + idx); + fraction[j][0][i] = mpeg3_muls[*tab++][m]; + fraction[j][1][i] = mpeg3_muls[*tab++][m]; + fraction[j][2][i] = mpeg3_muls[*tab][m]; + } + scale += 3; + } + else + fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0; + } + } + + for(i = jsbound; i < sblimit; i++, alloc1 += (1 << step)) + { + step = alloc1->bits; +/* channel 1 and channel 2 bitalloc are the same */ + bita++; + if((ba = *bita++)) + { + k=(alloc2 = alloc1+ba)->bits; + if((d1 = alloc2->d) < 0) + { + mpeg3_real_t cm; + + cm = mpeg3_muls[k][scale[x1 + 3]]; + fraction[1][0][i] = (fraction[0][0][i] = (mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + fraction[1][1][i] = (fraction[0][1][i] = (mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + fraction[1][2][i] = (fraction[0][2][i] = (mpeg3_real_t)((int)mpeg3bits_getbits(audio->astream, k) + d1)) * cm; + cm = mpeg3_muls[k][scale[x1]]; + fraction[0][0][i] *= cm; + fraction[0][1][i] *= cm; + fraction[0][2][i] *= cm; + } + else + { + static int *table[] = {0, 0, 0, mpeg3_grp_3tab, 0, mpeg3_grp_5tab, 0, 0, 0, mpeg3_grp_9tab}; + unsigned int idx, *tab, m1, m2; + + m1 = scale[x1]; + m2 = scale[x1+3]; + idx = (unsigned int)mpeg3bits_getbits(audio->astream, k); + tab = (unsigned int*)(table[d1] + idx + idx + idx); + fraction[0][0][i] = mpeg3_muls[*tab][m1]; + fraction[1][0][i] = mpeg3_muls[*tab++][m2]; + fraction[0][1][i] = mpeg3_muls[*tab][m1]; + fraction[1][1][i] = mpeg3_muls[*tab++][m2]; + fraction[0][2][i] = mpeg3_muls[*tab][m1]; + fraction[1][2][i] = mpeg3_muls[*tab][m2]; + } + scale += 6; + } + else + { + fraction[0][0][i] = fraction[0][1][i] = fraction[0][2][i] = + fraction[1][0][i] = fraction[1][1][i] = fraction[1][2][i] = 0.0; + } +/* + should we use individual scalefac for channel 2 or + is the current way the right one , where we just copy channel 1 to + channel 2 ?? + The current 'strange' thing is, that we throw away the scalefac + values for the second channel ...!! +-> changed .. now we use the scalefac values of channel one !! +*/ + } + + if(sblimit > SBLIMIT) sblimit = SBLIMIT; + + for(i = sblimit; i < SBLIMIT; i++) + for(j = 0; j < channels; j++) + fraction[j][0][i] = fraction[j][1][i] = fraction[j][2][i] = 0.0; + + return result | mpeg3bits_error(audio->astream); +} + +int mpeg3audio_dolayer2(mpeg3audio_t *audio) +{ + int i, j, result = 0; + int channels = audio->channels; + mpeg3_real_t fraction[2][4][SBLIMIT]; /* pick_table clears unused subbands */ + unsigned int bit_alloc[64]; + int scale[192]; + int single = audio->single; + + if(audio->error_protection) + mpeg3bits_getbits(audio->astream, 16); + + mpeg3audio_II_select_table(audio); + + audio->jsbound = (audio->mode == MPG_MD_JOINT_STEREO) ? + (audio->mode_ext << 2) + 4 : audio->II_sblimit; + + if(channels == 1 || single == 3) + single = 0; + + result |= mpeg3audio_II_step_one(audio, bit_alloc, scale); + + for(i = 0; i < SCALE_BLOCK && !result; i++) + { + result |= mpeg3audio_II_step_two(audio, bit_alloc, fraction, scale, i >> 2); + + for(j = 0; j < 3; j++) + { + if(single >= 0) + { +/* Monaural */ + mpeg3audio_synth_mono(audio, fraction[single][j], audio->pcm_sample, &(audio->pcm_point)); + } + else + { +/* Stereo */ + int p1 = audio->pcm_point; + mpeg3audio_synth_stereo(audio, fraction[0][j], 0, audio->pcm_sample, &p1); + mpeg3audio_synth_stereo(audio, fraction[1][j], 1, audio->pcm_sample, &(audio->pcm_point)); + } + + if(audio->pcm_point / audio->channels >= audio->pcm_allocated - MPEG3AUDIO_PADDING * audio->channels) + { +/* Need more room */ + mpeg3audio_replace_buffer(audio, audio->pcm_allocated + MPEG3AUDIO_PADDING * audio->channels); + } + } + } + + + return result; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/layer3.c b/core/multimedia/opieplayer/libmpeg3/audio/layer3.c new file mode 100644 index 0000000..b8a5f06 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/layer3.c @@ -0,0 +1,1254 @@ +#include "huffman.h" +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "tables.h" + +#include <stdio.h> +#include <string.h> + +struct gr_info_s { + int scfsi; + unsigned part2_3_length; + unsigned big_values; + unsigned scalefac_compress; + unsigned block_type; + unsigned mixed_block_flag; + unsigned table_select[3]; + unsigned subblock_gain[3]; + unsigned maxband[3]; + unsigned maxbandl; + unsigned maxb; + unsigned region1start; + unsigned region2start; + unsigned preflag; + unsigned scalefac_scale; + unsigned count1table_select; + mpeg3_real_t *full_gain[3]; + mpeg3_real_t *pow2gain; +}; + +struct mpeg3_III_sideinfo +{ + unsigned main_data_begin; + unsigned private_bits; + struct + { + struct gr_info_s gr[2]; + } ch[2]; +}; + +int mpeg3audio_III_get_scale_factors_1(mpeg3audio_t *audio, + int *scf, + struct gr_info_s *gr_info, + int ch, + int gr) +{ + static unsigned char slen[2][16] = + {{0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4}, + {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}}; + int numbits; + int num0 = slen[0][gr_info->scalefac_compress]; + int num1 = slen[1][gr_info->scalefac_compress]; + + if (gr_info->block_type == 2) + { + int i = 18; + numbits = (num0 + num1) * 18; + + if (gr_info->mixed_block_flag) + { + for(i = 8; i; i--) + *scf++ = mpeg3bits_getbits(audio->astream, num0); + i = 9; +/* num0 * 17 + num1 * 18 */ + numbits -= num0; + } + + for( ; i; i--) + *scf++ = mpeg3bits_getbits(audio->astream, num0); + for(i = 18; i; i--) + *scf++ = mpeg3bits_getbits(audio->astream, num1); +/* short[13][0..2] = 0 */ + *scf++ = 0; + *scf++ = 0; + *scf++ = 0; + } + else + { + int i; + int scfsi = gr_info->scfsi; + + if(scfsi < 0) + { +/* scfsi < 0 => granule == 0 */ + for(i = 11; i; i--) + { + *scf++ = mpeg3bits_getbits(audio->astream, num0); + } + for(i = 10; i; i--) + *scf++ = mpeg3bits_getbits(audio->astream, num1); + numbits = (num0 + num1) * 10 + num0; + *scf++ = 0; + } + else + { + numbits = 0; + if(!(scfsi & 0x8)) + { + for(i = 0; i < 6; i++) + { + *scf++ = mpeg3bits_getbits(audio->astream, num0); + } + numbits += num0 * 6; + } + else + { + scf += 6; + } + + if(!(scfsi & 0x4)) + { + for(i = 0; i < 5; i++) + *scf++ = mpeg3bits_getbits(audio->astream, num0); + numbits += num0 * 5; + } + else + { + scf += 5; + } + + if(!(scfsi & 0x2)) + { + for(i = 0; i < 5; i++) + *scf++ = mpeg3bits_getbits(audio->astream, num1); + numbits += num1 * 5; + } + else + { + scf += 5; + } + + if(!(scfsi & 0x1)) + { + for(i = 0; i < 5; i++) + *scf++ = mpeg3bits_getbits(audio->astream, num1); + numbits += num1 * 5; + } + else + { + scf += 5; + } + *scf++ = 0; /* no l[21] in original sources */ + } + } + return numbits; +} + +int mpeg3audio_III_get_scale_factors_2(mpeg3audio_t *audio, + int *scf, + struct gr_info_s *gr_info, + int i_stereo) +{ + unsigned char *pnt; + int i, j, n = 0, numbits = 0; + unsigned int slen; + static unsigned char stab[3][6][4] = + {{{ 6, 5, 5,5 }, { 6, 5, 7,3 }, { 11,10,0,0}, + { 7, 7, 7,0 }, { 6, 6, 6,3 }, { 8, 8,5,0}}, + {{ 9, 9, 9,9 }, { 9, 9,12,6 }, { 18,18,0,0}, + {12,12,12,0 }, {12, 9, 9,6 }, { 15,12,9,0}}, + {{ 6, 9, 9,9 }, { 6, 9,12,6 }, { 15,18,0,0}, + { 6,15,12,0 }, { 6,12, 9,6 }, { 6,18,9,0}}}; + +/* i_stereo AND second channel -> do_layer3() checks this */ + if(i_stereo) + slen = mpeg3_i_slen2[gr_info->scalefac_compress >> 1]; + else + slen = mpeg3_n_slen2[gr_info->scalefac_compress]; + + gr_info->preflag = (slen >> 15) & 0x1; + + n = 0; + if(gr_info->block_type == 2 ) + { + n++; + if(gr_info->mixed_block_flag) + n++; + } + + pnt = stab[n][(slen >> 12) & 0x7]; + + for(i = 0; i < 4; i++) + { + int num = slen & 0x7; + slen >>= 3; + if(num) + { + for(j = 0; j < (int)(pnt[i]); j++) + *scf++ = mpeg3bits_getbits(audio->astream, num); + numbits += pnt[i] * num; + } + else + { + for(j = 0; j < (int)(pnt[i]); j++) + *scf++ = 0; + } + } + + n = (n << 1) + 1; + for(i = 0; i < n; i++) + *scf++ = 0; + + return numbits; +} + +static int pretab1[22] = {0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,3,3,3,2,0}; +static int pretab2[22] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; + +/* + * Dequantize samples (includes huffman decoding) + * + * 24 is enough because tab13 has max. a 19 bit huffvector + */ + +#define BITSHIFT ((sizeof(long) - 1) * 8) +#define REFRESH_MASK \ + while(num < BITSHIFT) \ + { \ + mask |= mpeg3bits_getbits(audio->astream, 8) << (BITSHIFT - num); \ + num += 8; \ + part2remain -= 8; \ + } + +int mpeg3audio_III_dequantize_sample(mpeg3audio_t *audio, + mpeg3_real_t xr[SBLIMIT][SSLIMIT], + int *scf, + struct gr_info_s *gr_info, + int sfreq, + int part2bits) +{ + int shift = 1 + gr_info->scalefac_scale; + mpeg3_real_t *xrpnt = (mpeg3_real_t*)xr; + int l[3],l3; + int part2remain = gr_info->part2_3_length - part2bits; + int *me; + int num = mpeg3bits_getbitoffset(audio->astream); + long mask = mpeg3bits_getbits(audio->astream, num); +//printf("III_dequantize_sample 1 %08x %d\n", mask, num); + mask = mask << (BITSHIFT + 8 - num); + part2remain -= num; + + { + int bv = gr_info->big_values; + int region1 = gr_info->region1start; + int region2 = gr_info->region2start; + + l3 = ((576 >> 1) - bv) >> 1; + +/* + * we may lose the 'odd' bit here !! + * check this later again + */ + + if(bv <= region1) + { + l[0] = bv; + l[1] = 0; + l[2] = 0; + } + else + { + l[0] = region1; + if(bv <= region2) + { + l[1] = bv - l[0]; l[2] = 0; + } + else + { + l[1] = region2 - l[0]; + l[2] = bv - region2; + } + } + } + + if(gr_info->block_type == 2) + { +/* + * decoding with short or mixed mode BandIndex table + */ + int i, max[4]; + int step = 0, lwin = 3, cb = 0; + register mpeg3_real_t v = 0.0; + register int *m, mc; + + if(gr_info->mixed_block_flag) + { + max[3] = -1; + max[0] = max[1] = max[2] = 2; + m = mpeg3_map[sfreq][0]; + me = mpeg3_mapend[sfreq][0]; + } + else + { + max[0] = max[1] = max[2] = max[3] = -1; +/* max[3] not floatly needed in this case */ + m = mpeg3_map[sfreq][1]; + me = mpeg3_mapend[sfreq][1]; + } + + mc = 0; + for(i = 0; i < 2; i++) + { + int lp = l[i]; + struct newhuff *h = mpeg3_ht + gr_info->table_select[i]; + for( ; lp; lp--, mc--) + { + register int x,y; + if(!mc) + { + mc = *m++; + xrpnt = ((mpeg3_real_t*)xr) + (*m++); + lwin = *m++; + cb = *m++; + if(lwin == 3) + { + v = gr_info->pow2gain[(*scf++) << shift]; + step = 1; + } + else + { + v = gr_info->full_gain[lwin][(*scf++) << shift]; + step = 3; + } + } + + { + register short *val = h->table; + REFRESH_MASK; + while((y = *val++) < 0) + { + if (mask < 0) + val -= y; + num--; + mask <<= 1; + } + x = y >> 4; + y &= 0xf; + } + + if(x == 15 && h->linbits) + { + max[lwin] = cb; + REFRESH_MASK; + x += ((unsigned long)mask) >> (BITSHIFT + 8 - h->linbits); + num -= h->linbits + 1; + mask <<= h->linbits; + if(mask < 0) + *xrpnt = -mpeg3_ispow[x] * v; + else + *xrpnt = mpeg3_ispow[x] * v; + mask <<= 1; + } + else + if(x) + { + max[lwin] = cb; + if(mask < 0) + *xrpnt = -mpeg3_ispow[x] * v; + else + *xrpnt = mpeg3_ispow[x] * v; + num--; + mask <<= 1; + } + else + *xrpnt = 0.0; + + xrpnt += step; + if(y == 15 && h->linbits) + { + max[lwin] = cb; + REFRESH_MASK; + y += ((unsigned long) mask) >> (BITSHIFT + 8 - h->linbits); + num -= h->linbits + 1; + mask <<= h->linbits; + if(mask < 0) + *xrpnt = -mpeg3_ispow[y] * v; + else + *xrpnt = mpeg3_ispow[y] * v; + mask <<= 1; + } + else + if(y) + { + max[lwin] = cb; + if(mask < 0) + *xrpnt = -mpeg3_ispow[y] * v; + else + *xrpnt = mpeg3_ispow[y] * v; + num--; + mask <<= 1; + } + else + *xrpnt = 0.0; + xrpnt += step; + } + } + + for( ;l3 && (part2remain + num > 0); l3--) + { + struct newhuff *h = mpeg3_htc + gr_info->count1table_select; + register short *val = h->table, a; + + REFRESH_MASK; + while((a = *val++) < 0) + { + if (mask < 0) + val -= a; + num--; + mask <<= 1; + } + if(part2remain + num <= 0) + { + num -= part2remain + num; + break; + } + + for(i = 0; i < 4; i++) + { + if(!(i & 1)) + { + if(!mc) + { + mc = *m++; + xrpnt = ((mpeg3_real_t*)xr) + (*m++); + lwin = *m++; + cb = *m++; + if(lwin == 3) + { + v = gr_info->pow2gain[(*scf++) << shift]; + step = 1; + } + else + { + v = gr_info->full_gain[lwin][(*scf++) << shift]; + step = 3; + } + } + mc--; + } + if((a & (0x8 >> i))) + { + max[lwin] = cb; + if(part2remain + num <= 0) + { + break; + } + if(mask < 0) + *xrpnt = -v; + else + *xrpnt = v; + num--; + mask <<= 1; + } + else + *xrpnt = 0.0; + xrpnt += step; + } + } + + if(lwin < 3) + { +/* short band? */ + while(1) + { + for( ;mc > 0; mc--) + { +/* short band -> step=3 */ + *xrpnt = 0.0; + xrpnt += 3; + *xrpnt = 0.0; + xrpnt += 3; + } + if(m >= me) + break; + mc = *m++; + xrpnt = ((mpeg3_real_t*)xr) + *m++; +/* optimize: field will be set to zero at the end of the function */ + if(*m++ == 0) + break; +/* cb */ + m++; + } + } + + gr_info->maxband[0] = max[0] + 1; + gr_info->maxband[1] = max[1] + 1; + gr_info->maxband[2] = max[2] + 1; + gr_info->maxbandl = max[3] + 1; + + { + int rmax = max[0] > max[1] ? max[0] : max[1]; + rmax = (rmax > max[2] ? rmax : max[2]) + 1; + gr_info->maxb = rmax ? mpeg3_shortLimit[sfreq][rmax] : mpeg3_longLimit[sfreq][max[3] + 1]; + } + + } + else + { +/* + * decoding with 'long' BandIndex table (block_type != 2) + */ + int *pretab = gr_info->preflag ? pretab1 : pretab2; + int i, max = -1; + int cb = 0; + int *m = mpeg3_map[sfreq][2]; + register mpeg3_real_t v = 0.0; + int mc = 0; + +/* + * long hash table values + */ + for(i = 0; i < 3; i++) + { + int lp = l[i]; + struct newhuff *h = mpeg3_ht + gr_info->table_select[i]; + + for(; lp; lp--, mc--) + { + int x, y; + + if(!mc) + { + mc = *m++; + cb = *m++; + if(cb == 21) + v = 0.0; + else + v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift]; + } + { + register short *val = h->table; + REFRESH_MASK; + while((y = *val++) < 0) + { + if(mask < 0) + val -= y; + num--; + mask <<= 1; + } + x = y >> 4; + y &= 0xf; + } + + if(x == 15 && h->linbits) + { + max = cb; + REFRESH_MASK; + x += ((unsigned long) mask) >> (BITSHIFT + 8 - h->linbits); + num -= h->linbits + 1; + mask <<= h->linbits; + if(mask < 0) + *xrpnt++ = -mpeg3_ispow[x] * v; + else + *xrpnt++ = mpeg3_ispow[x] * v; + mask <<= 1; + } + else + if(x) + { + max = cb; + if(mask < 0) + *xrpnt++ = -mpeg3_ispow[x] * v; + else + *xrpnt++ = mpeg3_ispow[x] * v; + num--; + mask <<= 1; + } + else + *xrpnt++ = 0.0; + + if(y == 15 && h->linbits) + { + max = cb; + REFRESH_MASK; + y += ((unsigned long) mask) >> (BITSHIFT + 8 - h->linbits); + num -= h->linbits + 1; + mask <<= h->linbits; + if(mask < 0) + *xrpnt++ = -mpeg3_ispow[y] * v; + else + *xrpnt++ = mpeg3_ispow[y] * v; + mask <<= 1; + } + else + if(y) + { + max = cb; + if(mask < 0) + *xrpnt++ = -mpeg3_ispow[y] * v; + else + *xrpnt++ = mpeg3_ispow[y] * v; + num--; + mask <<= 1; + } + else + *xrpnt++ = 0.0; + } + } + +/* + * short (count1table) values + */ + for( ; l3 && (part2remain + num > 0); l3--) + { + struct newhuff *h = mpeg3_htc + gr_info->count1table_select; + register short *val = h->table, a; + + REFRESH_MASK; + while((a = *val++) < 0) + { + if(mask < 0) + val -= a; + num--; + mask <<= 1; + } + if(part2remain + num <= 0) + { + num -= part2remain + num; + break; + } + + for(i = 0; i < 4; i++) + { + if(!(i & 1)) + { + if(!mc) + { + mc = *m++; + cb = *m++; + if(cb == 21) + v = 0.0; + else + v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift]; + } + mc--; + } + if((a & (0x8 >> i))) + { + max = cb; + if(part2remain + num <= 0) + { + break; + } + if(mask < 0) + *xrpnt++ = -v; + else + *xrpnt++ = v; + num--; + mask <<= 1; + } + else + *xrpnt++ = 0.0; + } + } + + gr_info->maxbandl = max + 1; + gr_info->maxb = mpeg3_longLimit[sfreq][gr_info->maxbandl]; + } + + part2remain += num; + +//printf("III_dequantize_sample 2 %d %04x\n", num, mpeg3bits_showbits(audio->astream, 16)); + mpeg3bits_start_reverse(audio->astream); + mpeg3bits_getbits_reverse(audio->astream, num); + mpeg3bits_start_forward(audio->astream); +//printf("III_dequantize_sample 3 %d %04x\n", audio->astream->bit_number, mpeg3bits_showbits(audio->astream, 16)); + num = 0; + + while(xrpnt < &xr[SBLIMIT][0]) + *xrpnt++ = 0.0; + + while(part2remain > 16) + { + mpeg3bits_getbits(audio->astream, 16); /* Dismiss stuffing Bits */ + part2remain -= 16; + } + if(part2remain > 0) + { + mpeg3bits_getbits(audio->astream, part2remain); + } + else + if(part2remain < 0) + { + fprintf(stderr,"mpeg3audio_III_dequantize_sample: Can't rewind stream %d bits!\n", -part2remain); + return 1; /* -> error */ + } + return 0; +} + +int mpeg3audio_III_get_side_info(mpeg3audio_t *audio, + struct mpeg3_III_sideinfo *si, + int channels, + int ms_stereo, + long sfreq, + int single, + int lsf) +{ + int ch, gr; + int powdiff = (single == 3) ? 4 : 0; + static const int tabs[2][5] = { { 2,9,5,3,4 } , { 1,8,1,2,9 } }; + const int *tab = tabs[lsf]; + + si->main_data_begin = mpeg3bits_getbits(audio->astream, tab[1]); + if(channels == 1) + si->private_bits = mpeg3bits_getbits(audio->astream, tab[2]); + else + si->private_bits = mpeg3bits_getbits(audio->astream, tab[3]); + if(!lsf) + { + for(ch = 0; ch < channels; ch++) + { + si->ch[ch].gr[0].scfsi = -1; + si->ch[ch].gr[1].scfsi = mpeg3bits_getbits(audio->astream, 4); + } + } + + for(gr = 0; gr < tab[0]; gr++) + { + for(ch = 0; ch < channels; ch++) + { + register struct gr_info_s *gr_info = &(si->ch[ch].gr[gr]); + + gr_info->part2_3_length = mpeg3bits_getbits(audio->astream, 12); + gr_info->big_values = mpeg3bits_getbits(audio->astream, 9); + if(gr_info->big_values > 288) + { + fprintf(stderr,"mpeg3_III_get_side_info: big_values too large!\n"); + gr_info->big_values = 288; + } + gr_info->pow2gain = mpeg3_gainpow2 + 256 - mpeg3bits_getbits(audio->astream, 8) + powdiff; + if(ms_stereo) + gr_info->pow2gain += 2; + gr_info->scalefac_compress = mpeg3bits_getbits(audio->astream, tab[4]); + + if(mpeg3bits_getbits(audio->astream, 1)) + { +/* window switch flag */ + int i; + gr_info->block_type = mpeg3bits_getbits(audio->astream, 2); + gr_info->mixed_block_flag = mpeg3bits_getbits(audio->astream, 1); + gr_info->table_select[0] = mpeg3bits_getbits(audio->astream, 5); + gr_info->table_select[1] = mpeg3bits_getbits(audio->astream, 5); +/* + * table_select[2] not needed, because there is no region2, + * but to satisfy some verifications tools we set it either. + */ + gr_info->table_select[2] = 0; + for(i = 0; i < 3; i++) + gr_info->full_gain[i] = gr_info->pow2gain + (mpeg3bits_getbits(audio->astream, 3) << 3); + + if(gr_info->block_type == 0) + { + fprintf(stderr,"Blocktype == 0 and window-switching == 1 not allowed.\n"); + return 1; + } + +/* region_count/start parameters are implicit in this case. */ + if(!lsf || gr_info->block_type == 2) + gr_info->region1start = 36 >> 1; + else + { +/* check this again for 2.5 and sfreq=8 */ + if(sfreq == 8) + gr_info->region1start = 108 >> 1; + else + gr_info->region1start = 54 >> 1; + } + gr_info->region2start = 576 >> 1; + } + else + { + int i, r0c, r1c; + for(i = 0; i < 3; i++) + gr_info->table_select[i] = mpeg3bits_getbits(audio->astream, 5); + + r0c = mpeg3bits_getbits(audio->astream, 4); + r1c = mpeg3bits_getbits(audio->astream, 3); + gr_info->region1start = mpeg3_bandInfo[sfreq].longIdx[r0c + 1] >> 1 ; + gr_info->region2start = mpeg3_bandInfo[sfreq].longIdx[r0c + 1 + r1c + 1] >> 1; + gr_info->block_type = 0; + gr_info->mixed_block_flag = 0; + } + if(!lsf) gr_info->preflag = mpeg3bits_getbits(audio->astream, 1); + gr_info->scalefac_scale = mpeg3bits_getbits(audio->astream, 1); + gr_info->count1table_select = mpeg3bits_getbits(audio->astream, 1); + } + } + return 0; +} + +int mpeg3audio_III_hybrid(mpeg3audio_t *audio, + mpeg3_real_t fsIn[SBLIMIT][SSLIMIT], + mpeg3_real_t tsOut[SSLIMIT][SBLIMIT], + int ch, + struct gr_info_s *gr_info) +{ + mpeg3_real_t *tspnt = (mpeg3_real_t *) tsOut; + mpeg3_real_t *rawout1,*rawout2; + int bt, sb = 0; + + + { + int b = audio->mp3_blc[ch]; + rawout1 = audio->mp3_block[b][ch]; + b = -b + 1; + rawout2 = audio->mp3_block[b][ch]; + audio->mp3_blc[ch] = b; + } + + if(gr_info->mixed_block_flag) + { + sb = 2; + mpeg3audio_dct36(fsIn[0], rawout1, rawout2, mpeg3_win[0], tspnt); + mpeg3audio_dct36(fsIn[1], rawout1 + 18, rawout2 + 18, mpeg3_win1[0], tspnt + 1); + rawout1 += 36; + rawout2 += 36; + tspnt += 2; + } + + bt = gr_info->block_type; + if(bt == 2) + { + for( ; sb < gr_info->maxb; sb += 2, tspnt += 2, rawout1 += 36, rawout2 += 36) + { + mpeg3audio_dct12(fsIn[sb] ,rawout1 ,rawout2 ,mpeg3_win[2] ,tspnt); + mpeg3audio_dct12(fsIn[sb + 1], rawout1 + 18, rawout2 + 18, mpeg3_win1[2], tspnt + 1); + } + } + else + { + for( ; sb < gr_info->maxb; sb += 2, tspnt += 2, rawout1 += 36, rawout2 += 36) + { + mpeg3audio_dct36(fsIn[sb], rawout1, rawout2, mpeg3_win[bt], tspnt); + mpeg3audio_dct36(fsIn[sb + 1], rawout1 + 18, rawout2 + 18, mpeg3_win1[bt], tspnt + 1); + } + } + + for( ; sb < SBLIMIT; sb++, tspnt++) + { + int i; + for(i = 0; i < SSLIMIT; i++) + { + tspnt[i * SBLIMIT] = *rawout1++; + *rawout2++ = 0.0; + } + } + return 0; +} + +int mpeg3audio_III_antialias(mpeg3audio_t *audio, + mpeg3_real_t xr[SBLIMIT][SSLIMIT], + struct gr_info_s *gr_info) +{ + int sblim; + + if(gr_info->block_type == 2) + { + if(!gr_info->mixed_block_flag) + return 0; + sblim = 1; + } + else + { + sblim = gr_info->maxb-1; + } + +/* 31 alias-reduction operations between each pair of sub-bands */ +/* with 8 butterflies between each pair */ + + { + int sb; + mpeg3_real_t *xr1 = (mpeg3_real_t*)xr[1]; + + for(sb = sblim; sb; sb--, xr1 += 10) + { + int ss; + mpeg3_real_t *cs, *ca; + mpeg3_real_t *xr2; + cs = mpeg3_aa_cs; + ca = mpeg3_aa_ca; + xr2 = xr1; + + for(ss = 7; ss >= 0; ss--) + { +/* upper and lower butterfly inputs */ + register mpeg3_real_t bu, bd; + bu = *--xr2; + bd = *xr1; + *xr2 = (bu * (*cs) ) - (bd * (*ca) ); + *xr1++ = (bd * (*cs++) ) + (bu * (*ca++) ); + } + } + } + return 0; +} + +/* + * III_stereo: calculate mpeg3_real_t channel values for Joint-I-Stereo-mode + */ +int mpeg3audio_III_i_stereo(mpeg3audio_t *audio, + mpeg3_real_t xr_buf[2][SBLIMIT][SSLIMIT], + int *scalefac, + struct gr_info_s *gr_info, + int sfreq, + int ms_stereo, + int lsf) +{ + mpeg3_real_t (*xr)[SBLIMIT*SSLIMIT] = (mpeg3_real_t (*)[SBLIMIT*SSLIMIT] ) xr_buf; + struct mpeg3_bandInfoStruct *bi = &mpeg3_bandInfo[sfreq]; + const mpeg3_real_t *tab1, *tab2; + + int tab; +/* TODO: optimize as static */ + static const mpeg3_real_t *tabs[3][2][2] = + { + { { mpeg3_tan1_1, mpeg3_tan2_1 } , { mpeg3_tan1_2, mpeg3_tan2_2 } }, + { { mpeg3_pow1_1[0], mpeg3_pow2_1[0] } , { mpeg3_pow1_2[0], mpeg3_pow2_2[0] } } , + { { mpeg3_pow1_1[1], mpeg3_pow2_1[1] } , { mpeg3_pow1_2[1], mpeg3_pow2_2[1] } } + }; + + tab = lsf + (gr_info->scalefac_compress & lsf); + tab1 = tabs[tab][ms_stereo][0]; + tab2 = tabs[tab][ms_stereo][1]; + + if(gr_info->block_type == 2) + { + int lwin,do_l = 0; + if(gr_info->mixed_block_flag) + do_l = 1; + + for(lwin = 0; lwin < 3; lwin++) + { +/* process each window */ +/* get first band with zero values */ +/* sfb is minimal 3 for mixed mode */ + int is_p, sb, idx, sfb = gr_info->maxband[lwin]; + if(sfb > 3) do_l = 0; + + for( ; sfb < 12 ; sfb++) + { +/* scale: 0-15 */ + is_p = scalefac[sfb * 3 + lwin - gr_info->mixed_block_flag]; + if(is_p != 7) + { + mpeg3_real_t t1, t2; + sb = bi->shortDiff[sfb]; + idx = bi->shortIdx[sfb] + lwin; + t1 = tab1[is_p]; + t2 = tab2[is_p]; + for( ; sb > 0; sb--, idx += 3) + { + mpeg3_real_t v = xr[0][idx]; + xr[0][idx] = v * t1; + xr[1][idx] = v * t2; + } + } + } + +/* in the original: copy 10 to 11 , here: copy 11 to 12 +maybe still wrong??? (copy 12 to 13?) */ +/* scale: 0-15 */ + is_p = scalefac[11 * 3 + lwin - gr_info->mixed_block_flag]; + sb = bi->shortDiff[12]; + idx = bi->shortIdx[12] + lwin; + if(is_p != 7) + { + mpeg3_real_t t1, t2; + t1 = tab1[is_p]; + t2 = tab2[is_p]; + for( ; sb > 0; sb--, idx += 3) + { + mpeg3_real_t v = xr[0][idx]; + xr[0][idx] = v * t1; + xr[1][idx] = v * t2; + } + } + } /* end for(lwin; .. ; . ) */ + +/* also check l-part, if ALL bands in the three windows are 'empty' +* and mode = mixed_mode +*/ + if(do_l) + { + int sfb = gr_info->maxbandl; + int idx = bi->longIdx[sfb]; + + for ( ; sfb < 8; sfb++) + { + int sb = bi->longDiff[sfb]; +/* scale: 0-15 */ + int is_p = scalefac[sfb]; + if(is_p != 7) + { + mpeg3_real_t t1, t2; + t1 = tab1[is_p]; + t2 = tab2[is_p]; + for( ; sb > 0; sb--, idx++) + { + mpeg3_real_t v = xr[0][idx]; + xr[0][idx] = v * t1; + xr[1][idx] = v * t2; + } + } + else + idx += sb; + } + } + } + else + { +/* ((gr_info->block_type != 2)) */ + int sfb = gr_info->maxbandl; + int is_p, idx = bi->longIdx[sfb]; + for( ; sfb < 21; sfb++) + { + int sb = bi->longDiff[sfb]; +/* scale: 0-15 */ + is_p = scalefac[sfb]; + if(is_p != 7) + { + mpeg3_real_t t1, t2; + t1 = tab1[is_p]; + t2 = tab2[is_p]; + for( ; sb > 0; sb--, idx++) + { + mpeg3_real_t v = xr[0][idx]; + xr[0][idx] = v * t1; + xr[1][idx] = v * t2; + } + } + else + idx += sb; + } + + is_p = scalefac[20]; + if(is_p != 7) + { +/* copy l-band 20 to l-band 21 */ + int sb; + mpeg3_real_t t1 = tab1[is_p], t2 = tab2[is_p]; + + for(sb = bi->longDiff[21]; sb > 0; sb--, idx++) + { + mpeg3_real_t v = xr[0][idx]; + xr[0][idx] = v * t1; + xr[1][idx] = v * t2; + } + } + } /* ... */ +} + +/* Read just the frame after a seek. */ +int mpeg3audio_read_layer3_frame(mpeg3audio_t *audio) +{ + int result = 0; + + result = mpeg3audio_read_header(audio); + if(!result) + { + audio->bsbufold = audio->bsbuf; + audio->bsbuf = audio->bsspace[audio->bsnum] + 512; + audio->bsnum ^= 1; + result = mpeg3bits_read_buffer(audio->astream, audio->bsbuf, audio->framesize); + } + + return result; +} + +int mpeg3audio_dolayer3(mpeg3audio_t *audio) +{ + int gr, ch, ss; + int scalefacs[2][39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */ + struct mpeg3_III_sideinfo sideinfo; + int channels = audio->channels; + int single = audio->single; + int ms_stereo, i_stereo; + int sfreq = audio->sampling_frequency_code; + int stereo1, granules; + int i; + +/* flip/init buffer */ + audio->bsbufold = audio->bsbuf; + audio->bsbuf = audio->bsspace[audio->bsnum] + 512; + audio->bsnum ^= 1; + +/* read main data into memory */ + if(mpeg3bits_read_buffer(audio->astream, audio->bsbuf, audio->framesize)) + return 1; + mpeg3bits_use_ptr(audio->astream, audio->bsbuf); + +/* CRC must be skipped here for proper alignment with the backstep */ + if(audio->error_protection) + mpeg3bits_getbits(audio->astream, 16); + + if(channels == 1) + { +/* stream is mono */ + stereo1 = 1; + single = 0; + } + else + { +/* Stereo */ + stereo1 = 2; + } + + if(audio->mode == MPG_MD_JOINT_STEREO) + { + ms_stereo = (audio->mode_ext & 0x2) >> 1; + i_stereo = audio->mode_ext & 0x1; + } + else + ms_stereo = i_stereo = 0; + + if(audio->lsf) + { + granules = 1; + } + else + { + granules = 2; + } + + if(mpeg3audio_III_get_side_info(audio, &sideinfo, channels, ms_stereo, sfreq, single, audio->lsf)) + return 1; + +/* Step back */ + if(sideinfo.main_data_begin >= 512) + return 1; + + if(sideinfo.main_data_begin) + { + memcpy(audio->bsbuf + audio->ssize - sideinfo.main_data_begin, + audio->bsbufold + audio->prev_framesize - sideinfo.main_data_begin, + sideinfo.main_data_begin); + mpeg3bits_use_ptr(audio->astream, audio->bsbuf + audio->ssize - sideinfo.main_data_begin); + } + + for(gr = 0; gr < granules; gr++) + { + mpeg3_real_t hybridIn [2][SBLIMIT][SSLIMIT]; + mpeg3_real_t hybridOut[2][SSLIMIT][SBLIMIT]; + + { + struct gr_info_s *gr_info = &(sideinfo.ch[0].gr[gr]); + long part2bits; + if(audio->lsf) + part2bits = mpeg3audio_III_get_scale_factors_2(audio, scalefacs[0], gr_info, 0); + else + part2bits = mpeg3audio_III_get_scale_factors_1(audio, scalefacs[0], gr_info, 0, gr); +//printf("dolayer3 4 %04x\n", mpeg3bits_showbits(audio->astream, 16)); + + if(mpeg3audio_III_dequantize_sample(audio, hybridIn[0], scalefacs[0], gr_info, sfreq, part2bits)) + { + mpeg3bits_use_demuxer(audio->astream); + return 1; + } +//printf("dolayer3 5 %04x\n", mpeg3bits_showbits(audio->astream, 16)); + } + + if(channels == 2) + { + struct gr_info_s *gr_info = &(sideinfo.ch[1].gr[gr]); + long part2bits; + if(audio->lsf) + part2bits = mpeg3audio_III_get_scale_factors_2(audio, scalefacs[1], gr_info, i_stereo); + else + part2bits = mpeg3audio_III_get_scale_factors_1(audio, scalefacs[1], gr_info, 1, gr); + + if(mpeg3audio_III_dequantize_sample(audio, hybridIn[1], scalefacs[1], gr_info, sfreq, part2bits)) + { + mpeg3bits_use_demuxer(audio->astream); + return 1; + } + + if(ms_stereo) + { + int i; + int maxb = sideinfo.ch[0].gr[gr].maxb; + if(sideinfo.ch[1].gr[gr].maxb > maxb) + maxb = sideinfo.ch[1].gr[gr].maxb; + for(i = 0; i < SSLIMIT * maxb; i++) + { + mpeg3_real_t tmp0 = ((mpeg3_real_t*)hybridIn[0])[i]; + mpeg3_real_t tmp1 = ((mpeg3_real_t*)hybridIn[1])[i]; + ((mpeg3_real_t*)hybridIn[0])[i] = tmp0 + tmp1; + ((mpeg3_real_t*)hybridIn[1])[i] = tmp0 - tmp1; + } + } + + if(i_stereo) + mpeg3audio_III_i_stereo(audio, hybridIn, scalefacs[1], gr_info, sfreq, ms_stereo, audio->lsf); + + if(ms_stereo || i_stereo || (single == 3)) + { + if(gr_info->maxb > sideinfo.ch[0].gr[gr].maxb) + sideinfo.ch[0].gr[gr].maxb = gr_info->maxb; + else + gr_info->maxb = sideinfo.ch[0].gr[gr].maxb; + } + + switch(single) + { + case 3: + { + register int i; + register mpeg3_real_t *in0 = (mpeg3_real_t*)hybridIn[0], *in1 = (mpeg3_real_t*)hybridIn[1]; +/* *0.5 done by pow-scale */ + for(i = 0; i < SSLIMIT * gr_info->maxb; i++, in0++) + *in0 = (*in0 + *in1++); + } + break; + case 1: + { + register int i; + register mpeg3_real_t *in0 = (mpeg3_real_t*)hybridIn[0], *in1 = (mpeg3_real_t*)hybridIn[1]; + for(i = 0; i < SSLIMIT * gr_info->maxb; i++) + *in0++ = *in1++; + } + break; + } + } + + for(ch = 0; ch < stereo1; ch++) + { + struct gr_info_s *gr_info = &(sideinfo.ch[ch].gr[gr]); + mpeg3audio_III_antialias(audio, hybridIn[ch], gr_info); + mpeg3audio_III_hybrid(audio, hybridIn[ch], hybridOut[ch], ch, gr_info); + } + + for(ss = 0; ss < SSLIMIT; ss++) + { + if(single >= 0) + { + mpeg3audio_synth_mono(audio, hybridOut[0][ss], audio->pcm_sample, &(audio->pcm_point)); + } + else + { + int p1 = audio->pcm_point; + mpeg3audio_synth_stereo(audio, hybridOut[0][ss], 0, audio->pcm_sample, &p1); + mpeg3audio_synth_stereo(audio, hybridOut[1][ss], 1, audio->pcm_sample, &(audio->pcm_point)); + } + + if(audio->pcm_point / audio->channels >= audio->pcm_allocated - MPEG3AUDIO_PADDING * audio->channels) + { +/* Need more room */ + mpeg3audio_replace_buffer(audio, audio->pcm_allocated + MPEG3AUDIO_PADDING * audio->channels); + } + } + } + + mpeg3bits_use_demuxer(audio->astream); + return 0; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/mantissa.c b/core/multimedia/opieplayer/libmpeg3/audio/mantissa.c new file mode 100644 index 0000000..05fe251 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/mantissa.c @@ -0,0 +1,387 @@ +/* + * + * mantissa.c Copyright (C) Aaron Holtzman - May 1999 + * + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" + + +/* Lookup tables of 0.16 two's complement quantization values */ +static short mpeg3_q_1[3] = +{ + (-2 << 15) / 3, + 0, + (2 << 15) / 3 +}; + +static short mpeg3_q_2[5] = +{ + (-4 << 15) / 5, + ((-2 << 15) / 5) << 1, + 0, + (2 << 15) / 5, + ((4 << 15) / 5) << 1 +}; + +static short mpeg3_q_3[7] = +{ + (-6 << 15) / 7, + (-4 << 15) / 7, + (-2 << 15) / 7, + 0, + (2 << 15) / 7, + (4 << 15) / 7, + (6 << 15) / 7 +}; + +static short mpeg3_q_4[11] = +{ + (-10 << 15) / 11, + (-8 << 15) / 11, + (-6 << 15) / 11, + (-4 << 15) / 11, + (-2 << 15) / 11, + 0, + ( 2 << 15) / 11, + ( 4 << 15) / 11, + ( 6 << 15) / 11, + ( 8 << 15) / 11, + (10 << 15) / 11 +}; + +static short mpeg3_q_5[15] = +{ + (-14 << 15) / 15, + (-12 << 15) / 15, + (-10 << 15) / 15, + (-8 << 15) / 15, + (-6 << 15) / 15, + (-4 << 15) / 15, + (-2 << 15) / 15, + 0, + ( 2 << 15) / 15, + ( 4 << 15) / 15, + ( 6 << 15) / 15, + ( 8 << 15) / 15, + (10 << 15) / 15, + (12 << 15) / 15, + (14 << 15) / 15 +}; + +static short mpeg3_qnttztab[16] = {0, 0, 0, 3, 0, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16}; + + +/* */ +/* Scale factors for tofloat */ +/* */ + +static const unsigned MPEG3_INT32 mpeg3_scale_factors[25] = +{ + 0x38000000, /*2 ^ -(0 + 15) */ + 0x37800000, /*2 ^ -(1 + 15) */ + 0x37000000, /*2 ^ -(2 + 15) */ + 0x36800000, /*2 ^ -(3 + 15) */ + 0x36000000, /*2 ^ -(4 + 15) */ + 0x35800000, /*2 ^ -(5 + 15) */ + 0x35000000, /*2 ^ -(6 + 15) */ + 0x34800000, /*2 ^ -(7 + 15) */ + 0x34000000, /*2 ^ -(8 + 15) */ + 0x33800000, /*2 ^ -(9 + 15) */ + 0x33000000, /*2 ^ -(10 + 15) */ + 0x32800000, /*2 ^ -(11 + 15) */ + 0x32000000, /*2 ^ -(12 + 15) */ + 0x31800000, /*2 ^ -(13 + 15) */ + 0x31000000, /*2 ^ -(14 + 15) */ + 0x30800000, /*2 ^ -(15 + 15) */ + 0x30000000, /*2 ^ -(16 + 15) */ + 0x2f800000, /*2 ^ -(17 + 15) */ + 0x2f000000, /*2 ^ -(18 + 15) */ + 0x2e800000, /*2 ^ -(19 + 15) */ + 0x2e000000, /*2 ^ -(20 + 15) */ + 0x2d800000, /*2 ^ -(21 + 15) */ + 0x2d000000, /*2 ^ -(22 + 15) */ + 0x2c800000, /*2 ^ -(23 + 15) */ + 0x2c000000 /*2 ^ -(24 + 15) */ +}; + +static MPEG3_FLOAT32 *mpeg3_scale_factor = (MPEG3_FLOAT32*)mpeg3_scale_factors; + +static inline mpeg3_real_t mpeg3audio_ac3_tofloat(unsigned short exponent, int mantissa) +{ + mpeg3_real_t x; + x = mantissa * mpeg3_scale_factor[exponent]; + return x; +} + +static inline void mpeg3audio_ac3_mantissa_reset(mpeg3_ac3_mantissa_t *mantissa) +{ + mantissa->m_1[2] = mantissa->m_1[1] = mantissa->m_1[0] = 0; + mantissa->m_2[2] = mantissa->m_2[1] = mantissa->m_2[0] = 0; + mantissa->m_4[1] = mantissa->m_4[0] = 0; +/* Force new groups to be loaded */ + mantissa->m_1_pointer = mantissa->m_2_pointer = mantissa->m_4_pointer = 3; +} + +/* + * Generate eight bits of pseudo-entropy using a 16 bit linear + * feedback shift register (LFSR). The primitive polynomial used + * is 1 + x^4 + x^14 + x^16. + * + * The distribution is uniform, over the range [-0.707,0.707] + * + */ +inline unsigned int mpeg3audio_ac3_dither_gen(mpeg3audio_t *audio) +{ + int i; + unsigned int state; + +/* explicitly bring the state into a local var as gcc > 3.0? */ +/* doesn't know how to optimize out the stores */ + state = audio->ac3_lfsr_state; + +/* Generate eight pseudo random bits */ + for(i = 0; i < 8; i++) + { + state <<= 1; + + if(state & 0x10000) + state ^= 0xa011; + } + + audio->ac3_lfsr_state = state; + return (((((int)state << 8) >> 8) * (int)(0.707106f * 256.0f)) >> 16); +} + + +/* Fetch an unpacked, left justified, and properly biased/dithered mantissa value */ +static inline unsigned short mpeg3audio_ac3_mantissa_get(mpeg3audio_t *audio, + unsigned short bap, + unsigned short dithflag) +{ + unsigned short mantissa; + unsigned int group_code; + mpeg3_ac3_mantissa_t *mantissa_struct = &(audio->ac3_mantissa); + +/* If the bap is 0-5 then we have special cases to take care of */ + switch(bap) + { + case 0: + if(dithflag) + mantissa = mpeg3audio_ac3_dither_gen(audio); + else + mantissa = 0; + break; + + case 1: + if(mantissa_struct->m_1_pointer > 2) + { + group_code = mpeg3bits_getbits(audio->astream, 5); + + if(group_code > 26) + { +/* FIXME do proper block error handling */ + fprintf(stderr, "mpeg3audio_ac3_mantissa_get: Invalid mantissa 1 %d\n", group_code); + return 0; + } + + mantissa_struct->m_1[0] = group_code / 9; + mantissa_struct->m_1[1] = (group_code % 9) / 3; + mantissa_struct->m_1[2] = (group_code % 9) % 3; + mantissa_struct->m_1_pointer = 0; + } + mantissa = mantissa_struct->m_1[mantissa_struct->m_1_pointer++]; + mantissa = mpeg3_q_1[mantissa]; + break; + + case 2: + if(mantissa_struct->m_2_pointer > 2) + { + group_code = mpeg3bits_getbits(audio->astream, 7); + + if(group_code > 124) + { + fprintf(stderr, "mpeg3audio_ac3_mantissa_get: Invalid mantissa 2 %d\n", group_code); + return 0; + } + + mantissa_struct->m_2[0] = group_code / 25; + mantissa_struct->m_2[1] = (group_code % 25) / 5; + mantissa_struct->m_2[2] = (group_code % 25) % 5; + mantissa_struct->m_2_pointer = 0; + } + mantissa = mantissa_struct->m_2[mantissa_struct->m_2_pointer++]; + mantissa = mpeg3_q_2[mantissa]; + break; + + case 3: + mantissa = mpeg3bits_getbits(audio->astream, 3); + + if(mantissa > 6) + { + fprintf(stderr, "mpeg3audio_ac3_mantissa_get: Invalid mantissa 3 %d\n", mantissa); + return 0; + } + + mantissa = mpeg3_q_3[mantissa]; + break; + + case 4: + if(mantissa_struct->m_4_pointer > 1) + { + group_code = mpeg3bits_getbits(audio->astream, 7); + + if(group_code > 120) + { + fprintf(stderr, "mpeg3audio_ac3_mantissa_get: Invalid mantissa 4 %d\n", group_code); + return 0; + } + + mantissa_struct->m_4[0] = group_code / 11; + mantissa_struct->m_4[1] = group_code % 11; + mantissa_struct->m_4_pointer = 0; + } + mantissa = mantissa_struct->m_4[mantissa_struct->m_4_pointer++]; + mantissa = mpeg3_q_4[mantissa]; + break; + + case 5: + mantissa = mpeg3bits_getbits(audio->astream, 4); + + if(mantissa > 14) + { +/* FIXME do proper block error handling */ + fprintf(stderr, "mpeg3audio_ac3_mantissa_get: Invalid mantissa 5 %d\n", mantissa); + return 0; + } + + mantissa = mpeg3_q_5[mantissa]; + break; + + default: + mantissa = mpeg3bits_getbits(audio->astream, mpeg3_qnttztab[bap]); + mantissa <<= 16 - mpeg3_qnttztab[bap]; + } + return mantissa; +} + +void mpeg3audio_ac3_uncouple_channel(mpeg3audio_t *audio, + mpeg3_real_t samples[], + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk, + unsigned int ch) +{ + unsigned int bnd = 0; + unsigned int sub_bnd = 0; + unsigned int i, j; + MPEG3_FLOAT32 cpl_coord = 1.0; + unsigned int cpl_exp_tmp; + unsigned int cpl_mant_tmp; + short mantissa; + + for(i = audblk->cplstrtmant; i < audblk->cplendmant; ) + { + if(!audblk->cplbndstrc[sub_bnd++]) + { + cpl_exp_tmp = audblk->cplcoexp[ch][bnd] + 3 * audblk->mstrcplco[ch]; + if(audblk->cplcoexp[ch][bnd] == 15) + cpl_mant_tmp = (audblk->cplcomant[ch][bnd]) << 11; + else + cpl_mant_tmp = ((0x10) | audblk->cplcomant[ch][bnd]) << 10; + + cpl_coord = mpeg3audio_ac3_tofloat(cpl_exp_tmp, cpl_mant_tmp) * 8.0f; + +/*Invert the phase for the right channel if necessary */ + if(bsi->acmod == 0x2 && audblk->phsflginu && ch == 1 && audblk->phsflg[bnd]) + cpl_coord *= -1; + + bnd++; + } + + for(j = 0; j < 12; j++) + { +/* Get new dither values for each channel if necessary, so */ +/* the channels are uncorrelated */ + if(audblk->dithflag[ch] && audblk->cpl_bap[i] == 0) + mantissa = mpeg3audio_ac3_dither_gen(audio); + else + mantissa = audblk->cplmant[i]; + + samples[i] = cpl_coord * mpeg3audio_ac3_tofloat(audblk->cpl_exp[i], mantissa);; + + i++; + } + } + return; +} + +int mpeg3audio_ac3_coeff_unpack(mpeg3audio_t *audio, + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk, + mpeg3ac3_stream_samples_t samples) +{ + int i, j; + int done_cpl = 0; + short mantissa; + + mpeg3audio_ac3_mantissa_reset(&(audio->ac3_mantissa)); + + for(i = 0; i < bsi->nfchans && !mpeg3bits_error(audio->astream); i++) + { + for(j = 0; j < audblk->endmant[i] && !mpeg3bits_error(audio->astream); j++) + { + mantissa = mpeg3audio_ac3_mantissa_get(audio, audblk->fbw_bap[i][j], audblk->dithflag[i]); + samples[i][j] = mpeg3audio_ac3_tofloat(audblk->fbw_exp[i][j], mantissa); + } + + if(audblk->cplinu && audblk->chincpl[i] && !(done_cpl) && !mpeg3bits_error(audio->astream)) + { +/* ncplmant is equal to 12 * ncplsubnd */ +/* Don't dither coupling channel until channel separation so that + * interchannel noise is uncorrelated */ + for(j = audblk->cplstrtmant; + j < audblk->cplendmant && !mpeg3bits_error(audio->astream); + j++) + { + audblk->cplmant[j] = mpeg3audio_ac3_mantissa_get(audio, audblk->cpl_bap[j], 0); + } + done_cpl = 1; + } + } + +/* Uncouple the channel */ + if(audblk->cplinu) + { + if(audblk->chincpl[i]) + mpeg3audio_ac3_uncouple_channel(audio, samples[i], bsi, audblk, i); + } + + if(bsi->lfeon && !mpeg3bits_error(audio->astream)) + { +/* There are always 7 mantissas for lfe, no dither for lfe */ + for(j = 0; j < 7 && !mpeg3bits_error(audio->astream); j++) + mantissa = mpeg3audio_ac3_mantissa_get(audio, audblk->lfe_bap[j], 0); + samples[5][j] = mpeg3audio_ac3_tofloat(audblk->lfe_exp[j], mantissa); + } + + return mpeg3bits_error(audio->astream); +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.c b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.c new file mode 100644 index 0000000..e2d3912 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.c @@ -0,0 +1,536 @@ +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "mpeg3audio.h" +#include "tables.h" + +#include <math.h> +#include <stdlib.h> + +mpeg3audio_t* mpeg3audio_allocate_struct(mpeg3_t *file, mpeg3_atrack_t *track) +{ + mpeg3audio_t *audio = (mpeg3audio_t*)calloc(1, sizeof(mpeg3audio_t)); + audio->file = file; + audio->track = track; + audio->astream = mpeg3bits_new_stream(file, track->demuxer); + audio->outscale = 1; + audio->bsbuf = audio->bsspace[1]; + audio->init = 1; + audio->bo = 1; + audio->channels = 1; + return audio; +} + + +int mpeg3audio_delete_struct(mpeg3audio_t *audio) +{ + mpeg3bits_delete_stream(audio->astream); + if(audio->pcm_sample) free(audio->pcm_sample); + free(audio); + return 0; +} + +int mpeg3audio_replace_buffer(mpeg3audio_t *audio, long new_allocation) +{ + long i; + + audio->pcm_sample = (mpeg3_real_t*)realloc( audio->pcm_sample, sizeof(mpeg3_real_t) * new_allocation * audio->channels ); + audio->pcm_allocated = new_allocation; +/* + // Isn't this exactly the same as what the ANSI C function call realloc does, + // or did I miss C Programming 101 ? + + if(!audio->pcm_sample) + { + audio->pcm_sample = (mpeg3_real_t*)malloc(sizeof(mpeg3_real_t) * new_allocation * audio->channels); + audio->pcm_allocated = new_allocation; + } + else + { + mpeg3_real_t *new_samples = (mpeg3_real_t*)malloc(sizeof(mpeg3_real_t) * new_allocation * audio->channels); + for(i = 0; i < audio->pcm_allocated * audio->channels; i++) + { + new_samples[i] = audio->pcm_sample[i]; + } + free(audio->pcm_sample); + audio->pcm_sample = new_samples; + audio->pcm_allocated = new_allocation; + } +*/ + return 0; +} + +int mpeg3audio_read_frame(mpeg3audio_t *audio) +{ + int result = 0; + result = mpeg3audio_read_header(audio); + + if(!result) + { + switch(audio->format) + { + case AUDIO_AC3: + result = mpeg3audio_do_ac3(audio); + break; + + case AUDIO_MPEG: + switch(audio->layer) + { + case 1: + break; + + case 2: + result = mpeg3audio_dolayer2(audio); + break; + + case 3: + result = mpeg3audio_dolayer3(audio); + break; + + default: + result = 1; + break; + } + break; + + case AUDIO_PCM: + result = mpeg3audio_do_pcm(audio); + break; + } + } + + if(!result) + { +/* Byte align the stream */ + mpeg3bits_byte_align(audio->astream); + } + return result; +} + +/* Get the length but also initialize the frame sizes. */ +int mpeg3audio_get_length(mpeg3audio_t *audio, mpeg3_atrack_t *track) +{ + long result = 0; + long framesize1 = 0, total1 = 0; + long framesize2 = 0, total2 = 0; + long total_framesize = 0, total_frames = 0; + long byte_limit = 131072; /* Total bytes to gather information from */ + long total_bytes = 0; + long major_framesize; /* Bigger framesize + header */ + long minor_framesize; /* Smaller framesize + header */ + long major_total; + long minor_total; + mpeg3_t *file = audio->file; + +/* Get the frame sizes */ + mpeg3bits_seek_start(audio->astream); + audio->pcm_point = 0; + result = mpeg3audio_read_frame(audio); /* Stores the framesize */ + audio->samples_per_frame = audio->pcm_point / audio->channels; + + switch(audio->format) + { + case AUDIO_AC3: + audio->avg_framesize = audio->framesize; + break; + + case AUDIO_MPEG: + framesize1 = audio->framesize; + total_bytes += audio->framesize; + total1 = 1; + + while(!result && total_bytes < byte_limit) + { + audio->pcm_point = 0; + result = mpeg3audio_read_frame(audio); + total_bytes += audio->framesize; + if(audio->framesize != framesize1) + { + framesize2 = audio->framesize; + total2 = 1; + break; + } + else + { + total1++; + } + } + + while(!result && total_bytes < byte_limit) + { + audio->pcm_point = 0; + result = mpeg3audio_read_frame(audio); + total_bytes += audio->framesize; + if(audio->framesize != framesize2) + { + break; + } + else + { + total2++; + } + } + + audio->pcm_point = 0; + result = mpeg3audio_read_frame(audio); + if(audio->framesize != framesize1 && audio->framesize != framesize2) + { +/* Variable bit rate. Get the average frame size. */ + while(!result && total_bytes < byte_limit) + { + audio->pcm_point = 0; + result = mpeg3audio_read_frame(audio); + total_bytes += audio->framesize; + if(!result) + { + total_framesize += audio->framesize; + total_frames++; + } + } + audio->avg_framesize = 4 + (total_framesize + framesize1 + framesize2) / (total_frames + total1 + total2); + } + else + { + major_framesize = framesize2 > framesize1 ? framesize2 : framesize1; + major_total = framesize2 > framesize1 ? total2 : total1; + minor_framesize = framesize2 > framesize1 ? framesize1 : framesize2; + minor_total = framesize2 > framesize1 ? total1 : total2; +/* Add the headers to the framesizes */ + audio->avg_framesize = 4 + (major_framesize * major_total + minor_framesize * minor_total) / (major_total + minor_total); + } + break; + + case AUDIO_PCM: + break; + } + +/* Estimate the total samples */ + if(file->is_audio_stream) + { +/* From the raw file */ + result = (long)((float)mpeg3demuxer_total_bytes(audio->astream->demuxer) / audio->avg_framesize * audio->samples_per_frame); + } + else + { +/* Gross approximation from a multiplexed file. */ + result = (long)(mpeg3demux_length(audio->astream->demuxer) * track->sample_rate); +/* result = (long)((mpeg3_real_t)mpeg3_video_frames(file, 0) / mpeg3_frame_rate(file, 0) * track->sample_rate); */ +/* We would scan the multiplexed packets here for the right timecode if only */ +/* they had meaningful timecode. */ + } + + audio->pcm_point = 0; + mpeg3bits_seek_start(audio->astream); + mpeg3audio_reset_synths(audio); + return result; +} + +int mpeg3audio_seek(mpeg3audio_t *audio, long position) +{ + int result = 0; + mpeg3_t *file = audio->file; + mpeg3_atrack_t *track = audio->track; + long frame_number; + long byte_position; + double time_position; + +/* Sample seek wasn't requested */ + if(audio->sample_seek < 0) + { + audio->pcm_position = position; + audio->pcm_size = 0; + return 0; + } + +/* Can't slide buffer. Seek instead. */ + if(!file->is_audio_stream) + { +/* Seek in a multiplexed stream using the multiplexer. */ + time_position = (double)position / track->sample_rate; + result |= mpeg3bits_seek_time(audio->astream, time_position); + audio->pcm_position = (long)mpeg3bits_packet_time(audio->astream) * track->sample_rate; +/*printf("wanted %f got %f\n", time_position, mpeg3bits_packet_time(audio->astream)); */ + } + else + { +/* Seek in an elemental stream. This algorithm achieves sample accuracy on fixed bitrates. */ +/* Forget about variable bitrates or program streams. */ + frame_number = position / audio->samples_per_frame; + byte_position = (long)(audio->avg_framesize * frame_number); + audio->pcm_position = frame_number * audio->samples_per_frame; + + if(byte_position < audio->avg_framesize * 2) + { + result |= mpeg3bits_seek_start(audio->astream); + audio->pcm_position = 0; + } + else + { + result |= mpeg3bits_seek_byte(audio->astream, byte_position); + } + } + +/* Arm the backstep buffer for layer 3 if not at the beginning already. */ + if(byte_position >= audio->avg_framesize * 2 && audio->layer == 3 && !result) + { + result |= mpeg3audio_prev_header(audio); + result |= mpeg3audio_read_layer3_frame(audio); + } + +/* Reset the tables. */ + mpeg3audio_reset_synths(audio); + audio->pcm_size = 0; + audio->pcm_point = 0; + return result; +} + +/* ================================================================ */ +/* ENTRY POINTS */ +/* ================================================================ */ + + + + +mpeg3audio_t* mpeg3audio_new(mpeg3_t *file, mpeg3_atrack_t *track, int format) +{ + mpeg3audio_t *audio = mpeg3audio_allocate_struct(file, track); + int result = 0; + +/* Init tables */ + mpeg3audio_new_decode_tables(audio); + audio->percentage_seek = -1; + audio->sample_seek = -1; + audio->format = format; + +/* Determine the format of the stream */ + if(format == AUDIO_UNKNOWN) + { + if(((mpeg3bits_showbits(audio->astream, 32) & 0xffff0000) >> 16) == MPEG3_AC3_START_CODE) + audio->format = AUDIO_AC3; + else + audio->format = AUDIO_MPEG; + } + +/* get channel count */ + result = mpeg3audio_read_header(audio); + +/* Set up the sample buffer */ + mpeg3audio_replace_buffer(audio, 262144); + +/* Copy information to the mpeg struct */ + if(!result) + { + track->channels = audio->channels; + + switch(audio->format) + { + case AUDIO_AC3: + track->sample_rate = mpeg3_ac3_samplerates[audio->sampling_frequency_code]; + break; + + case AUDIO_MPEG: + track->sample_rate = mpeg3_freqs[audio->sampling_frequency_code]; + break; + + case AUDIO_PCM: + track->sample_rate = 48000; + break; + } + + track->total_samples = mpeg3audio_get_length(audio, track); + result |= mpeg3bits_seek_start(audio->astream); + } + else + { + mpeg3audio_delete_struct(audio); + audio = 0; + } + + return audio; +} + +int mpeg3audio_delete(mpeg3audio_t *audio) +{ + mpeg3audio_delete_struct(audio); + return 0; +} + +int mpeg3audio_seek_percentage(mpeg3audio_t *audio, double percentage) +{ + audio->percentage_seek = percentage; + return 0; +} + +int mpeg3audio_seek_sample(mpeg3audio_t *audio, long sample) +{ + audio->sample_seek = sample; + return 0; +} + +/* Read raw frames for concatenation purposes */ +int mpeg3audio_read_raw(mpeg3audio_t *audio, unsigned char *output, long *size, long max_size) +{ + int result = 0; + int i; + *size = 0; + + switch(audio->format) + { + case AUDIO_AC3: +/* Just write the AC3 stream */ + if(mpeg3bits_read_buffer(audio->astream, output, audio->framesize)) + return 1; + *size = audio->framesize; + break; + + case AUDIO_MPEG: +/* Fix the mpeg stream */ + result = mpeg3audio_read_header(audio); + if(!result) + { + if(max_size < 4) return 1; + *output++ = (audio->newhead & 0xff000000) >> 24; + *output++ = (audio->newhead & 0xff0000) >> 16; + *output++ = (audio->newhead & 0xff00) >> 8; + *output++ = (audio->newhead & 0xff); + *size += 4; + + if(max_size < 4 + audio->framesize) return 1; + if(mpeg3bits_read_buffer(audio->astream, output, audio->framesize)) + return 1; + + *size += audio->framesize; + } + break; + + case AUDIO_PCM: + if(mpeg3bits_read_buffer(audio->astream, output, audio->framesize)) + return 1; + *size = audio->framesize; + break; + } + return result; +} + +/* Channel is 0 to channels - 1 */ +int mpeg3audio_decode_audio(mpeg3audio_t *audio, + mpeg3_real_t *output_f, + short *output_i, int sampleSpacing, + int channel, + long start_position, + long len) +{ + long allocation_needed = len + MPEG3AUDIO_PADDING; + long i, j, result = 0; + mpeg3_t *file = audio->file; + mpeg3_atrack_t *atrack = audio->track; + long attempts; + +/* Create new buffer */ + if(audio->pcm_allocated < allocation_needed) + { + mpeg3audio_replace_buffer(audio, allocation_needed); + } + +/* There was a percentage seek */ + if(audio->percentage_seek >= 0) + { + mpeg3bits_seek_percentage(audio->astream, audio->percentage_seek); +/* Force the pcm buffer to be reread. */ + audio->pcm_position = start_position; + audio->pcm_size = 0; + audio->percentage_seek = -1; + } + else + { +/* Entire output is in buffer so don't do anything. */ + if(start_position >= audio->pcm_position && start_position < audio->pcm_position + audio->pcm_size && + start_position + len <= audio->pcm_size) + { + ; + } + else +/* Output starts in buffer but ends later so slide it back. */ + if(start_position <= audio->pcm_position + audio->pcm_size && + start_position >= audio->pcm_position) + { + for(i = 0, j = (start_position - audio->pcm_position) * audio->channels; + j < audio->pcm_size * audio->channels; + i++, j++) + { + audio->pcm_sample[i] = audio->pcm_sample[j]; + } + + audio->pcm_point = i; + audio->pcm_size -= start_position - audio->pcm_position; + audio->pcm_position = start_position; + } + else + { +/* Output is outside buffer completely. */ + result = mpeg3audio_seek(audio, start_position); + audio->sample_seek = -1; +/* Check sanity */ + if(start_position < audio->pcm_position) audio->pcm_position = start_position; + } + audio->sample_seek = -1; + } + +/* Read packets until the buffer is full. */ + if(!result) + { + attempts = 0; + result = 1; + while(attempts < 6 && + !mpeg3bits_eof(audio->astream) && + audio->pcm_size + audio->pcm_position < start_position + len) + { + result = mpeg3audio_read_frame(audio); + if(result) attempts++; + audio->pcm_size = audio->pcm_point / audio->channels; + } + } + + + +/* Copy the buffer to the output */ + if(output_f) + { + for(i = 0, j = (start_position - audio->pcm_position) * audio->channels + channel; + i < len && j < audio->pcm_size * audio->channels; + i++, j += audio->channels) + { + output_f[i] = audio->pcm_sample[j]; + } + for( ; i < len; i++) + { + output_f[i] = 0; + } + } + else + if(output_i) + { + int sample; + for(i = 0, j = (start_position - audio->pcm_position) * audio->channels + channel; + i < (len*(sampleSpacing+1)) && j < audio->pcm_size * audio->channels; + i++, j += audio->channels) + { + sample = (int)(audio->pcm_sample[j] * 32767); + if(sample > 32767) sample = 32767; + else + if(sample < -32768) sample = -32768; + + output_i[i] = sample; + i += sampleSpacing; + } + for( ; i < (len*(sampleSpacing+1)); i++) + { + output_i[i] = 0; + i += sampleSpacing; + } + } + + if(audio->pcm_point > 0) + return 0; + else + return result; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h new file mode 100644 index 0000000..2117be7 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3audio.h @@ -0,0 +1,144 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef MPEG3AUDIO_H +#define MPEG3AUDIO_H + +#include "ac3.h" +#include "../bitstream.h" +typedef struct mpeg3_atrack_rec mpeg3_atrack_t; + +#define MAXFRAMESIZE 1792 +#define HDRCMPMASK 0xfffffd00 +#define SBLIMIT 32 +#define SSLIMIT 18 +#define SCALE_BLOCK 12 +#define MPEG3AUDIO_PADDING 1024 + +/* Values for mode */ +#define MPG_MD_STEREO 0 +#define MPG_MD_JOINT_STEREO 1 +#define MPG_MD_DUAL_CHANNEL 2 +#define MPG_MD_MONO 3 + +/* IMDCT variables */ +typedef struct +{ + mpeg3_real_t real; + mpeg3_real_t imag; +} mpeg3_complex_t; + +#define AC3_N 512 + +struct al_table +{ + short bits; + short d; +}; + +typedef struct +{ + struct mpeg3_rec* file; + mpeg3_atrack_t* track; + mpeg3_bits_t *astream; + +/* In order of importance */ + int format; /* format of audio */ + int layer; /* layer if mpeg */ + int channels; + long outscale; + long framenum; + long prev_framesize; + long framesize; /* For mp3 current framesize without header. For AC3 current framesize with header. */ + int avg_framesize; /* Includes the 4 byte header */ + mpeg3_real_t *pcm_sample; /* Interlaced output from synthesizer in floats */ + int pcm_point; /* Float offset in pcm_sample to write to */ + long pcm_position; /* Sample start of pcm_samples in file */ + long pcm_size; /* Number of pcm samples in the buffer */ + long pcm_allocated; /* Allocated number of samples in pcm_samples */ + int sample_seek; + double percentage_seek; + unsigned long oldhead; + unsigned long newhead; + unsigned long firsthead; + int bsnum; + int lsf; + int mpeg35; + int sampling_frequency_code; + int bitrate_index; + int bitrate; + int samples_per_frame; + int padding; + int extension; + int mode; + int mode_ext; + int copyright; + int original; + int emphasis; + int error_protection; + +/* Back step buffers for mp3 */ + unsigned char bsspace[2][MAXFRAMESIZE + 512]; /* MAXFRAMESIZE */ + unsigned char *bsbuf, *bsbufold; + long ssize; + int init; + int single; + struct al_table *alloc; + int II_sblimit; + int jsbound; + int bo; /* Static variable in synthesizer */ + +/* MP3 Static arrays here */ + mpeg3_real_t synth_stereo_buffs[2][2][0x110]; + mpeg3_real_t synth_mono_buff[64]; + unsigned int layer2_scfsi_buf[64]; + + mpeg3_real_t mp3_block[2][2][SBLIMIT * SSLIMIT]; + int mp3_blc[2]; + +/* AC3 specific stuff. AC3 also shares objects with MPEG */ + unsigned int ac3_framesize_code; + mpeg3_ac3bsi_t ac3_bsi; + mpeg3_ac3audblk_t ac3_audblk; + mpeg3_ac3_bitallocation_t ac3_bit_allocation; + mpeg3_ac3_mantissa_t ac3_mantissa; + mpeg3_complex_t ac3_imdct_buf[AC3_N / 4]; + +/* Delay buffer for DCT interleaving */ + mpeg3_real_t ac3_delay[6][AC3_N / 2]; +/* Twiddle factor LUT */ + mpeg3_complex_t *ac3_w[7]; +#if !defined(USE_FIXED_POINT) || defined(PRINT_FIXED_POINT_TABLES) + /* Just for allocated memory */ + mpeg3_complex_t ac3_w_1[1]; + mpeg3_complex_t ac3_w_2[2]; + mpeg3_complex_t ac3_w_4[4]; + mpeg3_complex_t ac3_w_8[8]; + mpeg3_complex_t ac3_w_16[16]; + mpeg3_complex_t ac3_w_32[32]; + mpeg3_complex_t ac3_w_64[64]; +#endif + int ac3_lfsr_state; + unsigned char ac3_buffer[MAX_AC3_FRAMESIZE]; + mpeg3ac3_stream_samples_t ac3_samples; +} mpeg3audio_t; + + + +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/mpeg3real.h b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3real.h new file mode 100644 index 0000000..cdcac3d --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/mpeg3real.h @@ -0,0 +1,232 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef MPEG3REAL_H +#define MPEG3REAL_H + +#ifdef USE_FIXED_POINT + +#include <limits.h> +#include <stdio.h> + +#ifndef LONGLONG +#define LONGLONG long long +#endif + +//#define SC (1<<16) +#define SC (1<<15) + +class mpeg3_real_t { + long v; +public: + mpeg3_real_t() { } // Uninitialized, just like a float + mpeg3_real_t(double d) { v=long(d*SC); } + mpeg3_real_t(float f) { v=long(f*SC); } + mpeg3_real_t(int i) { v=long(i*SC); } + long fixedPoint() const { return v; } + operator float() const { return ((float)v)/SC; } + operator int() const { return (int)(v/SC); } + mpeg3_real_t operator+() const; + mpeg3_real_t operator-() const; + mpeg3_real_t& operator= (const mpeg3_real_t&); + mpeg3_real_t& operator+= (const mpeg3_real_t&); + mpeg3_real_t& operator-= (const mpeg3_real_t&); + mpeg3_real_t& operator*= (const mpeg3_real_t&); + mpeg3_real_t& operator/= (const mpeg3_real_t&); + friend mpeg3_real_t operator+ (const mpeg3_real_t&, const mpeg3_real_t&); + friend mpeg3_real_t operator- (const mpeg3_real_t&, const mpeg3_real_t&); + friend mpeg3_real_t operator* (const mpeg3_real_t&, const mpeg3_real_t&); + friend mpeg3_real_t operator/ (const mpeg3_real_t&, const mpeg3_real_t&); + friend mpeg3_real_t operator+ (const mpeg3_real_t&, const float&); + friend mpeg3_real_t operator- (const mpeg3_real_t&, const float&); + friend mpeg3_real_t operator* (const mpeg3_real_t&, const float&); + friend mpeg3_real_t operator/ (const mpeg3_real_t&, const float&); + friend mpeg3_real_t operator+ (const float&, const mpeg3_real_t&); + friend mpeg3_real_t operator- (const float&, const mpeg3_real_t&); + friend mpeg3_real_t operator* (const float&, const mpeg3_real_t&); + friend mpeg3_real_t operator/ (const float&, const mpeg3_real_t&); + friend mpeg3_real_t operator+ (const mpeg3_real_t&, const int&); + friend mpeg3_real_t operator- (const mpeg3_real_t&, const int&); + friend mpeg3_real_t operator* (const mpeg3_real_t&, const int&); + friend mpeg3_real_t operator/ (const mpeg3_real_t&, const int&); + friend mpeg3_real_t operator+ (const int&, const mpeg3_real_t&); + friend mpeg3_real_t operator- (const int&, const mpeg3_real_t&); + friend mpeg3_real_t operator* (const int&, const mpeg3_real_t&); + friend mpeg3_real_t operator/ (const int&, const mpeg3_real_t&); +}; + +inline mpeg3_real_t mpeg3_real_t::operator+() const +{ + return *this; +} + +inline mpeg3_real_t mpeg3_real_t::operator-() const +{ + mpeg3_real_t r; + r.v=-v; + return r; +} + +inline mpeg3_real_t& mpeg3_real_t::operator= (const mpeg3_real_t& o) +{ + v=o.v; + return *this; +} + +inline mpeg3_real_t& mpeg3_real_t::operator+= (const mpeg3_real_t& o) +{ + v += o.v; + return *this; +} + +inline mpeg3_real_t& mpeg3_real_t::operator-= (const mpeg3_real_t& o) +{ + v -= o.v; + return *this; +} + +inline mpeg3_real_t& mpeg3_real_t::operator*= (const mpeg3_real_t& o) +{ + *this = *this * o; + return *this; +} + +inline mpeg3_real_t& mpeg3_real_t::operator/= (const mpeg3_real_t& o) +{ + *this = *this / o; + return *this; +} + + +inline mpeg3_real_t operator+ (const mpeg3_real_t&a, const mpeg3_real_t&b) +{ + mpeg3_real_t r; + r.v=a.v+b.v; + return r; +} + +inline mpeg3_real_t operator- (const mpeg3_real_t&a, const mpeg3_real_t&b) +{ + mpeg3_real_t r; + r.v=a.v-b.v; + return r; +} + +inline mpeg3_real_t operator* (const mpeg3_real_t&a, const mpeg3_real_t&b) +{ + mpeg3_real_t r; + r.v = (LONGLONG)a.v * b.v / SC; + return r; +} + +inline mpeg3_real_t operator/ (const mpeg3_real_t&a, const mpeg3_real_t&b) +{ + mpeg3_real_t r; + r.v = (LONGLONG)a.v * SC / b.v; + return r; +} + +inline mpeg3_real_t operator+ (const mpeg3_real_t&a, const float&b) +{ + return a+mpeg3_real_t(b); +} + +inline mpeg3_real_t operator- (const mpeg3_real_t&a, const float&b) +{ + return a-mpeg3_real_t(b); +} + +inline mpeg3_real_t operator* (const mpeg3_real_t&a, const float&b) +{ + return a*mpeg3_real_t(b); +} + +inline mpeg3_real_t operator/ (const mpeg3_real_t&a, const float&b) +{ + return a/mpeg3_real_t(b); +} + + +inline mpeg3_real_t operator+ (const float&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)+b; +} + +inline mpeg3_real_t operator- (const float&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)-b; +} + +inline mpeg3_real_t operator* (const float&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)*b; +} + +inline mpeg3_real_t operator/ (const float&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)/b; +} + + +inline mpeg3_real_t operator+ (const mpeg3_real_t&a, const int&b) +{ + return a+mpeg3_real_t(b); +} + +inline mpeg3_real_t operator- (const mpeg3_real_t&a, const int&b) +{ + return a-mpeg3_real_t(b); +} + +inline mpeg3_real_t operator* (const mpeg3_real_t&a, const int&b) +{ + return a*mpeg3_real_t(b); +} + +inline mpeg3_real_t operator/ (const mpeg3_real_t&a, const int&b) +{ + return a/mpeg3_real_t(b); +} + + +inline mpeg3_real_t operator+ (const int&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)+b; +} + +inline mpeg3_real_t operator- (const int&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)-b; +} + +inline mpeg3_real_t operator* (const int&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)*b; +} + +inline mpeg3_real_t operator/ (const int&a, const mpeg3_real_t&b) +{ + return mpeg3_real_t(a)/b; +} + +#else +typedef float mpeg3_real_t; +#endif + +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/pcm.c b/core/multimedia/opieplayer/libmpeg3/audio/pcm.c new file mode 100644 index 0000000..8fa0d25 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/pcm.c @@ -0,0 +1,51 @@ +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" + +int mpeg3audio_read_pcm_header(mpeg3audio_t *audio) +{ + unsigned int code; + + code = mpeg3bits_getbits(audio->astream, 16); + while(!mpeg3bits_eof(audio->astream) && code != MPEG3_PCM_START_CODE) + { + code <<= 8; + code &= 0xffff; + code |= mpeg3bits_getbits(audio->astream, 8); + } + + audio->avg_framesize = audio->framesize = 0x7db; + audio->channels = 2; + + return mpeg3bits_eof(audio->astream); +} + +int mpeg3audio_do_pcm(mpeg3audio_t *audio) +{ + int i, j, k; + MPEG3_INT16 sample; + int frame_samples = (audio->framesize - 3) / audio->channels / 2; + + if(mpeg3bits_read_buffer(audio->astream, audio->ac3_buffer, frame_samples * audio->channels * 2)) + return 1; + +/* Need more room */ + if(audio->pcm_point / audio->channels >= audio->pcm_allocated - MPEG3AUDIO_PADDING * audio->channels) + { + mpeg3audio_replace_buffer(audio, audio->pcm_allocated + MPEG3AUDIO_PADDING * audio->channels); + } + + k = 0; + for(i = 0; i < frame_samples; i++) + { + for(j = 0; j < audio->channels; j++) + { + sample = ((MPEG3_INT16)(audio->ac3_buffer[k++])) << 8; + sample |= audio->ac3_buffer[k++]; + audio->pcm_sample[audio->pcm_point + i * audio->channels + j] = + (mpeg3_real_t)sample / 32767; + } + } + audio->pcm_point += frame_samples * audio->channels; + return 0; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/synthesizers.c b/core/multimedia/opieplayer/libmpeg3/audio/synthesizers.c new file mode 100644 index 0000000..71a74b3 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/synthesizers.c @@ -0,0 +1,174 @@ +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "tables.h" + +#define WRITE_SAMPLE(samples, sum) \ +{ \ + (*samples) = (sum); \ +} + +int mpeg3audio_synth_stereo(mpeg3audio_t *audio, mpeg3_real_t *bandPtr, int channel, mpeg3_real_t *out, int *pnt) +{ + const int step = 2; + mpeg3_real_t *samples = out + *pnt; + register mpeg3_real_t sum; + mpeg3_real_t *b0, (*buf)[0x110]; + int bo1; + + if(!channel) + { + audio->bo--; + audio->bo &= 0xf; + buf = audio->synth_stereo_buffs[0]; + } + else + { + samples++; + buf = audio->synth_stereo_buffs[1]; + } + + if(audio->bo & 0x1) + { + b0 = buf[0]; + bo1 = audio->bo; + mpeg3audio_dct64(buf[1] + ((audio->bo + 1) & 0xf), buf[0] + audio->bo, bandPtr); + } + else + { + b0 = buf[1]; + bo1 = audio->bo + 1; + mpeg3audio_dct64(buf[0] + audio->bo, buf[1] + audio->bo + 1, bandPtr); + } + +/*printf("%f %f %f\n", buf[0][0], buf[1][0], bandPtr[0]); */ + + { + register int j; + mpeg3_real_t *window = mpeg3_decwin + 16 - bo1; + + for(j = 16; j; j--, b0 += 0x10, window += 0x20, samples += step) + { + sum = window[0x0] * b0[0x0]; + sum -= window[0x1] * b0[0x1]; + sum += window[0x2] * b0[0x2]; + sum -= window[0x3] * b0[0x3]; + sum += window[0x4] * b0[0x4]; + sum -= window[0x5] * b0[0x5]; + sum += window[0x6] * b0[0x6]; + sum -= window[0x7] * b0[0x7]; + sum += window[0x8] * b0[0x8]; + sum -= window[0x9] * b0[0x9]; + sum += window[0xA] * b0[0xA]; + sum -= window[0xB] * b0[0xB]; + sum += window[0xC] * b0[0xC]; + sum -= window[0xD] * b0[0xD]; + sum += window[0xE] * b0[0xE]; + sum -= window[0xF] * b0[0xF]; + + WRITE_SAMPLE(samples, sum); + } + + sum = window[0x0] * b0[0x0]; + sum += window[0x2] * b0[0x2]; + sum += window[0x4] * b0[0x4]; + sum += window[0x6] * b0[0x6]; + sum += window[0x8] * b0[0x8]; + sum += window[0xA] * b0[0xA]; + sum += window[0xC] * b0[0xC]; + sum += window[0xE] * b0[0xE]; + WRITE_SAMPLE(samples, sum); + b0 -= 0x10; + window -= 0x20; + samples += step; + window += bo1 << 1; + + for(j = 15; j; j--, b0 -= 0x10, window -= 0x20, samples += step) + { + sum = -window[-0x1] * b0[0x0]; + sum -= window[-0x2] * b0[0x1]; + sum -= window[-0x3] * b0[0x2]; + sum -= window[-0x4] * b0[0x3]; + sum -= window[-0x5] * b0[0x4]; + sum -= window[-0x6] * b0[0x5]; + sum -= window[-0x7] * b0[0x6]; + sum -= window[-0x8] * b0[0x7]; + sum -= window[-0x9] * b0[0x8]; + sum -= window[-0xA] * b0[0x9]; + sum -= window[-0xB] * b0[0xA]; + sum -= window[-0xC] * b0[0xB]; + sum -= window[-0xD] * b0[0xC]; + sum -= window[-0xE] * b0[0xD]; + sum -= window[-0xF] * b0[0xE]; + sum -= window[-0x0] * b0[0xF]; + + WRITE_SAMPLE(samples, sum); + } + } + *pnt += 64; + + return 0; +} + +int mpeg3audio_synth_mono(mpeg3audio_t *audio, mpeg3_real_t *bandPtr, mpeg3_real_t *samples, int *pnt) +{ + mpeg3_real_t *samples_tmp = audio->synth_mono_buff; + mpeg3_real_t *tmp1 = samples_tmp; + int i, ret; + int pnt1 = 0; + + ret = mpeg3audio_synth_stereo(audio, bandPtr, 0, samples_tmp, &pnt1); + samples += *pnt; + + for(i = 0; i < 32; i++) + { + *samples = *tmp1; + samples++; + tmp1 += 2; + } + *pnt += 32; + + return ret; +} + + +/* Call this after every seek to reset the buffers */ +int mpeg3audio_reset_synths(mpeg3audio_t *audio) +{ + int i, j, k; + for(i = 0; i < 2; i++) + { + for(j = 0; j < 2; j++) + { + for(k = 0; k < 0x110; k++) + { + audio->synth_stereo_buffs[i][j][k] = 0; + } + } + } + for(i = 0; i < 64; i++) + { + audio->synth_mono_buff[i] = 0; + audio->layer2_scfsi_buf[i] = 0; + } + for(i = 0; i < 2; i++) + { + for(j = 0; j < 2; j++) + { + for(k = 0; k < SBLIMIT * SSLIMIT; k++) + { + audio->mp3_block[i][j][k] = 0; + } + } + } + audio->mp3_blc[0] = 0; + audio->mp3_blc[1] = 0; + for(i = 0; i < audio->channels; i++) + { + for(j = 0; j < AC3_N / 2; j++) + { + audio->ac3_delay[i][j] = 0; + } + } + return 0; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/tables.c b/core/multimedia/opieplayer/libmpeg3/audio/tables.c new file mode 100644 index 0000000..aeab335 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/tables.c @@ -0,0 +1,554 @@ +#include "mpeg3audio.h" +#include "../libmpeg3.h" +#include "../mpeg3protos.h" +#include "tables.h" + +#include <math.h> + +/* Bitrate indexes */ +int mpeg3_tabsel_123[2][3][16] = { + { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,}, + {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,}, + {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} }, + + { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,}, + {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,}, + {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} } +}; + +long mpeg3_freqs[9] = { 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000 }; + +#ifdef USE_3DNOW +mpeg3_real_t mpeg3_decwin[2 * (512 + 32)]; +mpeg3_real_t mpeg3_cos64[32], mpeg3_cos32[16], mpeg3_cos16[8], mpeg3_cos8[4], mpeg3_cos4[2]; +#else +mpeg3_real_t mpeg3_decwin[512 + 32]; +mpeg3_real_t mpeg3_cos64[16], mpeg3_cos32[8], mpeg3_cos16[4], mpeg3_cos8[2], mpeg3_cos4[1]; +#endif + +mpeg3_real_t *mpeg3_pnts[] = { mpeg3_cos64, mpeg3_cos32, mpeg3_cos16, mpeg3_cos8, mpeg3_cos4 }; + +int mpeg3_grp_3tab[32 * 3] = { 0, }; /* used: 27 */ +int mpeg3_grp_5tab[128 * 3] = { 0, }; /* used: 125 */ +int mpeg3_grp_9tab[1024 * 3] = { 0, }; /* used: 729 */ + +REAL_MATRIX(mpeg3_muls, [27], [64]); /* also used by layer 1 */ +REAL_MATRIX(mpeg3_gainpow2, [256 + 118 + 4], ); +REAL_MATRIX(mpeg3_ispow, [8207], ); +REAL_MATRIX(mpeg3_aa_ca, [8], ); +REAL_MATRIX(mpeg3_aa_cs, [8], ); +REAL_MATRIX(mpeg3_win, [4], [36]); +REAL_MATRIX(mpeg3_win1, [4], [36]); +REAL_MATRIX(mpeg3_COS1, [12], [6]); +REAL_MATRIX(mpeg3_COS9, [9], ); +REAL_MATRIX(mpeg3_tfcos36, [9], ); +REAL_MATRIX(mpeg3_tfcos12, [3], ); +REAL_MATRIX(mpeg3_cos9, [3], ); +REAL_MATRIX(mpeg3_cos18, [3], ); +REAL_MATRIX(mpeg3_tan1_1, [16], ); +REAL_MATRIX(mpeg3_tan2_1, [16], ); +REAL_MATRIX(mpeg3_tan1_2, [16], ); +REAL_MATRIX(mpeg3_tan2_2, [16], ); +REAL_MATRIX(mpeg3_pow1_1, [2], [16]); +REAL_MATRIX(mpeg3_pow2_1, [2], [16]); +REAL_MATRIX(mpeg3_pow1_2, [2], [16]); +REAL_MATRIX(mpeg3_pow2_2, [2], [16]); + +mpeg3_real_t mpeg3_COS6_1, mpeg3_COS6_2; + +#ifdef PRINT_FIXED_POINT_TABLES +static void print_table(const char* var, mpeg3_real_t* data, int count) +{ + int i; + printf("#ifdef USE_DATA_TABLES\n"); + printf("static long %s_data[] = {",var); + for(i = 0; i < count; i++) { + printf("%c0x%08x,", i%8?' ':'\n', data[i].fixedPoint()); + } + printf("};\n"); + printf("#endif\n"); +} +#endif + +#ifdef PRINT_FIXED_POINT_TABLES +# define DO_TABLE(T) print_table(#T, T, sizeof(T)/sizeof(mpeg3_real_t)) +# define DO_TABLE2(T,DIM) print_table(#T, (mpeg3_real_t*)T, sizeof(T)/sizeof(mpeg3_real_t)) +#elif USE_FIXED_POINT +# define DO_TABLE(T) T = (mpeg3_real_t*)T##_data + // multidimensional +# define DO_TABLE2(T,DIM) T = (mpeg3_real_t(*)DIM)T##_data +#else +# define DO_TABLE(T) +# define DO_TABLE2(T,DIM) +#endif + +#if defined(USE_FIXED_POINT) && !defined(PRINT_FIXED_POINT_TABLES) +#define USE_DATA_TABLES +#include "fptables.h" +#endif + +long mpeg3_intwinbase[] = { + 0, -1, -1, -1, -1, -1, -1, -2, -2, -2, + -2, -3, -3, -4, -4, -5, -5, -6, -7, -7, + -8, -9, -10, -11, -13, -14, -16, -17, -19, -21, + -24, -26, -29, -31, -35, -38, -41, -45, -49, -53, + -58, -63, -68, -73, -79, -85, -91, -97, -104, -111, + -117, -125, -132, -139, -147, -154, -161, -169, -176, -183, + -190, -196, -202, -208, -213, -218, -222, -225, -227, -228, + -228, -227, -224, -221, -215, -208, -200, -189, -177, -163, + -146, -127, -106, -83, -57, -29, 2, 36, 72, 111, + 153, 197, 244, 294, 347, 401, 459, 519, 581, 645, + 711, 779, 848, 919, 991, 1064, 1137, 1210, 1283, 1356, + 1428, 1498, 1567, 1634, 1698, 1759, 1817, 1870, 1919, 1962, + 2001, 2032, 2057, 2075, 2085, 2087, 2080, 2063, 2037, 2000, + 1952, 1893, 1822, 1739, 1644, 1535, 1414, 1280, 1131, 970, + 794, 605, 402, 185, -45, -288, -545, -814, -1095, -1388, + -1692, -2006, -2330, -2663, -3004, -3351, -3705, -4063, -4425, -4788, + -5153, -5517, -5879, -6237, -6589, -6935, -7271, -7597, -7910, -8209, + -8491, -8755, -8998, -9219, -9416, -9585, -9727, -9838, -9916, -9959, + -9966, -9935, -9863, -9750, -9592, -9389, -9139, -8840, -8492, -8092, + -7640, -7134, -6574, -5959, -5288, -4561, -3776, -2935, -2037, -1082, + -70, 998, 2122, 3300, 4533, 5818, 7154, 8540, 9975, 11455, + 12980, 14548, 16155, 17799, 19478, 21189, 22929, 24694, 26482, 28289, + 30112, 31947, 33791, 35640, 37489, 39336, 41176, 43006, 44821, 46617, + 48390, 50137, 51853, 53534, 55178, 56778, 58333, 59838, 61289, 62684, + 64019, 65290, 66494, 67629, 68692, 69679, 70590, 71420, 72169, 72835, + 73415, 73908, 74313, 74630, 74856, 74992, 75038 }; + +int mpeg3_longLimit[9][23]; +int mpeg3_shortLimit[9][14]; + +struct mpeg3_bandInfoStruct mpeg3_bandInfo[9] = +{ + +/* MPEG 1.0 */ + { {0,4,8,12,16,20,24,30,36,44,52,62,74, 90,110,134,162,196,238,288,342,418,576}, + {4,4,4,4,4,4,6,6,8, 8,10,12,16,20,24,28,34,42,50,54, 76,158}, + {0,4*3,8*3,12*3,16*3,22*3,30*3,40*3,52*3,66*3, 84*3,106*3,136*3,192*3}, + {4,4,4,4,6,8,10,12,14,18,22,30,56} } , + + { {0,4,8,12,16,20,24,30,36,42,50,60,72, 88,106,128,156,190,230,276,330,384,576}, + {4,4,4,4,4,4,6,6,6, 8,10,12,16,18,22,28,34,40,46,54, 54,192}, + {0,4*3,8*3,12*3,16*3,22*3,28*3,38*3,50*3,64*3, 80*3,100*3,126*3,192*3}, + {4,4,4,4,6,6,10,12,14,16,20,26,66} } , + + { {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576} , + {4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102, 26} , + {0,4*3,8*3,12*3,16*3,22*3,30*3,42*3,58*3,78*3,104*3,138*3,180*3,192*3} , + {4,4,4,4,6,8,12,16,20,26,34,42,12} } , + +/* MPEG 2.0 */ + { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576}, + {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } , + {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} , + {4,4,4,6,6,8,10,14,18,26,32,42,18 } } , + + { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576}, + {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,52,64,70,76,36 } , + {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,136*3,180*3,192*3} , + {4,4,4,6,8,10,12,14,18,24,32,44,12 } } , + + { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576}, + {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 }, + {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,134*3,174*3,192*3}, + {4,4,4,6,8,10,12,14,18,24,30,40,18 } } , +/* MPEG 2.5 */ + { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} , + {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54}, + {0,12,24,36,54,78,108,144,186,240,312,402,522,576}, + {4,4,4,6,8,10,12,14,18,24,30,40,18} }, + { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} , + {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54}, + {0,12,24,36,54,78,108,144,186,240,312,402,522,576}, + {4,4,4,6,8,10,12,14,18,24,30,40,18} }, + { {0,12,24,36,48,60,72,88,108,132,160,192,232,280,336,400,476,566,568,570,572,574,576}, + {12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2}, + {0, 24, 48, 72,108,156,216,288,372,480,486,492,498,576}, + {8,8,8,12,16,20,24,28,36,2,2,2,26} } , +}; + +int mpeg3_mapbuf0[9][152]; +int mpeg3_mapbuf1[9][156]; +int mpeg3_mapbuf2[9][44]; +int *mpeg3_map[9][3]; +int *mpeg3_mapend[9][3]; + +unsigned int mpeg3_n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */ +unsigned int mpeg3_i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */ + +int mpeg3audio_init_layer3(mpeg3audio_t *audio); + +int mpeg3audio_init_layer2(mpeg3audio_t *audio) +{ + static double mulmul[27] = + { + 0.0 , -2.0/3.0 , 2.0/3.0 , + 2.0/7.0 , 2.0/15.0 , 2.0/31.0, 2.0/63.0 , 2.0/127.0 , 2.0/255.0 , + 2.0/511.0 , 2.0/1023.0 , 2.0/2047.0 , 2.0/4095.0 , 2.0/8191.0 , + 2.0/16383.0 , 2.0/32767.0 , 2.0/65535.0 , + -4.0/5.0 , -2.0/5.0 , 2.0/5.0, 4.0/5.0 , + -8.0/9.0 , -4.0/9.0 , -2.0/9.0 , 2.0/9.0 , 4.0/9.0 , 8.0/9.0 + }; + static int base[3][9] = + { + { 1 , 0, 2 , } , + { 17, 18, 0 , 19, 20 , } , + { 21, 1, 22, 23, 0, 24, 25, 2, 26 } + }; + static int tablen[3] = { 3, 5, 9 }; + static int *itable, *tables[3] = {mpeg3_grp_3tab, mpeg3_grp_5tab, mpeg3_grp_9tab}; + int i, j, k, l, len; + mpeg3_real_t *table; + + for(i = 0; i < 3; i++) + { + itable = tables[i]; + len = tablen[i]; + for(j = 0; j < len; j++) + for(k = 0; k < len; k++) + for(l = 0; l < len; l++) + { + *itable++ = base[i][l]; + *itable++ = base[i][k]; + *itable++ = base[i][j]; + } + } + +#if !defined(USE_FIXED_POINT) || defined(PRINT_FIXED_POINT_TABLES) +#if defined(PRINT_FIXED_POINT_TABLES) + //mpeg3audio_init_layer3(audio); // we depend on mpeg3_muls table +#endif + for(k = 0; k < 27; k++) + { + double m = mulmul[k]; + table = mpeg3_muls[k]; + for(j = 3, i = 0; i < 63; i++, j--) + *table++ = m * pow(2.0, (double)j / 3.0); + *table++ = 0.0; + } +#endif + DO_TABLE2(mpeg3_muls,[64]); + return 0; +} + +int mpeg3audio_init_layer3(mpeg3audio_t *audio) +{ + int i, j, k, l; + int down_sample_sblimit = 32; + + audio->mp3_block[0][0][0] = 0; + audio->mp3_blc[0] = 0; + audio->mp3_blc[1] = 0; + +#if !defined(USE_FIXED_POINT) || defined(PRINT_FIXED_POINT_TABLES) + for(i = -256; i < 118 + 4; i++) + mpeg3_gainpow2[i + 256] = pow((double)2.0, -0.25 * (double)(i + 210)); + + for(i = 0; i < 8207; i++) + mpeg3_ispow[i] = pow((double)i, (double)4.0 / 3.0); + + for(i = 0; i < 8; i++) + { + static double Ci[8] = {-0.6,-0.535,-0.33,-0.185,-0.095,-0.041,-0.0142,-0.0037}; + double sq = sqrt(1.0+Ci[i]*Ci[i]); + mpeg3_aa_cs[i] = 1.0/sq; + mpeg3_aa_ca[i] = Ci[i]/sq; + } + + for(i = 0; i < 18; i++) + { + mpeg3_win[0][i] = mpeg3_win[1][i] = 0.5 * sin( M_PI / 72.0 * (double)(2 * (i + 0) + 1) ) / cos (M_PI * (double)(2 * (i + 0) + 19) / 72.0); + mpeg3_win[0][i+18] = mpeg3_win[3][i+18] = 0.5 * sin( M_PI / 72.0 * (double)(2 * (i + 18) + 1) ) / cos (M_PI * (double)(2 * (i + 18) + 19) / 72.0); + } + for(i = 0; i < 6; i++) + { + mpeg3_win[1][i + 18] = 0.5 / cos ( M_PI * (double) (2*(i+18)+19) / 72.0 ); + mpeg3_win[3][i + 12] = 0.5 / cos ( M_PI * (double) (2*(i+12)+19) / 72.0 ); + mpeg3_win[1][i + 24] = 0.5 * sin( M_PI / 24.0 * (double)(2 * i + 13) ) / cos (M_PI * (double)(2 * (i + 24)+ 19) / 72.0 ); + mpeg3_win[1][i + 30] = mpeg3_win[3][i] = 0.0; + mpeg3_win[3][i + 6 ] = 0.5 * sin( M_PI / 24.0 * (double)(2 * i + 1) ) / cos (M_PI * (double)(2 * (i + 6 )+ 19) / 72.0 ); + } + + for(i = 0; i < 9; i++) + mpeg3_COS9[i] = cos(M_PI / 18.0 * (double)i); + + for(i = 0; i < 9; i++) + mpeg3_tfcos36[i] = 0.5 / cos (M_PI * (double) (i*2+1) / 36.0); + for(i = 0; i < 3; i++) + mpeg3_tfcos12[i] = 0.5 / cos (M_PI * (double) (i*2+1) / 12.0); + + mpeg3_cos9[0] = cos(1.0 * M_PI / 9.0); + mpeg3_cos9[1] = cos(5.0 * M_PI / 9.0); + mpeg3_cos9[2] = cos(7.0 * M_PI / 9.0); + mpeg3_cos18[0] = cos(1.0 * M_PI / 18.0); + mpeg3_cos18[1] = cos(11.0 * M_PI / 18.0); + mpeg3_cos18[2] = cos(13.0 * M_PI / 18.0); + + for(i = 0; i < 12; i++) + { + mpeg3_win[2][i] = 0.5 * sin(M_PI / 24.0 * (double) (2 * i + 1)) / cos(M_PI * (double)(2 * i + 7) / 24.0); + for(j = 0; j < 6; j++) + mpeg3_COS1[i][j] = cos(M_PI / 24.0 * (double) ((2 * i + 7) * (2 * j + 1))); + } + + for(j = 0; j < 4; j++) + { + static int len[4] = {36, 36, 12, 36}; + for(i = 0; i < len[j]; i += 2) + mpeg3_win1[j][i] = + mpeg3_win[j][i]; + for(i = 1; i < len[j]; i += 2) + mpeg3_win1[j][i] = - mpeg3_win[j][i]; + } + + for(i = 0; i < 16; i++) + { + double t = tan( (double) i * M_PI / 12.0 ); + mpeg3_tan1_1[i] = t / (1.0 + t); + mpeg3_tan2_1[i] = 1.0 / (1.0 + t); + mpeg3_tan1_2[i] = M_SQRT2 * t / (1.0 + t); + mpeg3_tan2_2[i] = M_SQRT2 / (1.0 + t); + + for(j = 0; j < 2; j++) + { + double base = pow(2.0, -0.25 * (j + 1.0)); + double p1 = 1.0,p2 = 1.0; + if(i > 0) + { + if( i & 1 ) + p1 = pow(base, (i + 1.0) * 0.5); + else + p2 = pow(base, i * 0.5); + } + mpeg3_pow1_1[j][i] = p1; + mpeg3_pow2_1[j][i] = p2; + mpeg3_pow1_2[j][i] = M_SQRT2 * p1; + mpeg3_pow2_2[j][i] = M_SQRT2 * p2; + } + } + +#endif + + DO_TABLE(mpeg3_gainpow2); + DO_TABLE(mpeg3_ispow); + DO_TABLE(mpeg3_aa_cs); + DO_TABLE(mpeg3_aa_ca); + DO_TABLE2(mpeg3_win,[36]); + DO_TABLE(mpeg3_COS9); + DO_TABLE(mpeg3_tfcos36); + DO_TABLE(mpeg3_tfcos12); + DO_TABLE(mpeg3_cos9); + DO_TABLE(mpeg3_cos18); + DO_TABLE2(mpeg3_COS1,[6]); + DO_TABLE2(mpeg3_win1,[36]); + DO_TABLE(mpeg3_tan1_1); + DO_TABLE(mpeg3_tan2_1); + DO_TABLE(mpeg3_tan1_2); + DO_TABLE(mpeg3_tan2_2); + DO_TABLE2(mpeg3_pow1_1,[16]); + DO_TABLE2(mpeg3_pow2_1,[16]); + DO_TABLE2(mpeg3_pow1_2,[16]); + DO_TABLE2(mpeg3_pow2_2,[16]); + + mpeg3_COS6_1 = cos( M_PI / 6.0 * (double) 1); + mpeg3_COS6_2 = cos( M_PI / 6.0 * (double) 2); + + for(j = 0; j < 9; j++) + { + struct mpeg3_bandInfoStruct *bi = &mpeg3_bandInfo[j]; + int *mp; + int cb,lwin; + int *bdf; + + mp = mpeg3_map[j][0] = mpeg3_mapbuf0[j]; + bdf = bi->longDiff; + for(i = 0, cb = 0; cb < 8; cb++, i += *bdf++) + { + *mp++ = (*bdf) >> 1; + *mp++ = i; + *mp++ = 3; + *mp++ = cb; + } + bdf = bi->shortDiff + 3; + for(cb = 3; cb < 13; cb++) + { + int l = (*bdf++) >> 1; + for(lwin = 0; lwin < 3; lwin++) + { + *mp++ = l; + *mp++ = i + lwin; + *mp++ = lwin; + *mp++ = cb; + } + i += 6 * l; + } + mpeg3_mapend[j][0] = mp; + + mp = mpeg3_map[j][1] = mpeg3_mapbuf1[j]; + bdf = bi->shortDiff+0; + for(i = 0,cb = 0; cb < 13; cb++) + { + int l = (*bdf++) >> 1; + for(lwin = 0; lwin < 3; lwin++) + { + *mp++ = l; + *mp++ = i + lwin; + *mp++ = lwin; + *mp++ = cb; + } + i += 6 * l; + } + mpeg3_mapend[j][1] = mp; + + mp = mpeg3_map[j][2] = mpeg3_mapbuf2[j]; + bdf = bi->longDiff; + for(cb = 0; cb < 22 ; cb++) + { + *mp++ = (*bdf++) >> 1; + *mp++ = cb; + } + mpeg3_mapend[j][2] = mp; + } + + for(j = 0; j < 9; j++) + { + for(i = 0; i < 23; i++) + { + mpeg3_longLimit[j][i] = (mpeg3_bandInfo[j].longIdx[i] - 1 + 8) / 18 + 1; + if(mpeg3_longLimit[j][i] > (down_sample_sblimit)) + mpeg3_longLimit[j][i] = down_sample_sblimit; + } + for(i = 0; i < 14; i++) + { + mpeg3_shortLimit[j][i] = (mpeg3_bandInfo[j].shortIdx[i] - 1) / 18 + 1; + if(mpeg3_shortLimit[j][i] > (down_sample_sblimit) ) + mpeg3_shortLimit[j][i] = down_sample_sblimit; + } + } + + for(i = 0; i < 5; i++) + { + for(j = 0; j < 6; j++) + { + for(k = 0; k < 6; k++) + { + int n = k + j * 6 + i * 36; + mpeg3_i_slen2[n] = i | (j << 3) | (k << 6) | (3 << 12); + } + } + } + for(i = 0; i < 4; i++) + { + for(j = 0; j < 4; j++) + { + for(k = 0; k < 4; k++) + { + int n = k + j * 4 + i * 16; + mpeg3_i_slen2[n+180] = i | (j << 3) | (k << 6) | (4 << 12); + } + } + } + for(i = 0; i < 4; i++) + { + for(j = 0; j < 3; j++) + { + int n = j + i * 3; + mpeg3_i_slen2[n + 244] = i | (j << 3) | (5 << 12); + mpeg3_n_slen2[n + 500] = i | (j << 3) | (2 << 12) | (1 << 15); + } + } + + for(i = 0; i < 5; i++) + { + for(j = 0; j < 5; j++) + { + for(k = 0; k < 4; k++) + { + for(l = 0; l < 4; l++) + { + int n = l + k * 4 + j * 16 + i * 80; + mpeg3_n_slen2[n] = i | (j << 3) | ( k << 6) | (l << 9) | (0 << 12); + } + } + } + } + for(i = 0; i < 5; i++) + { + for(j = 0; j < 5; j++) + { + for(k = 0; k < 4; k++) + { + int n = k + j * 4 + i * 20; + mpeg3_n_slen2[n + 400] = i | (j << 3) | (k << 6) | (1 << 12); + } + } + } + + return 0; +} + +int mpeg3audio_new_decode_tables(mpeg3audio_t *audio) +{ + int i, j, k, kr, divv; + mpeg3_real_t *costab; + int idx; + long scaleval = audio->outscale; + + + for(i = 0; i < 5; i++) + { + kr = 0x10 >> i; + divv = 0x40 >> i; + costab = mpeg3_pnts[i]; + for(k = 0; k < kr; k++) + costab[k] = 1.0 / (2.0 * cos(M_PI * ((double)k * 2.0 + 1.0) / (double)divv)); + +#ifdef USE_3DNOW + for(k = 0; k < kr; k++) + costab[k + kr] = -costab[k]; +#endif + + } + + idx = 0; + scaleval = -scaleval; + for(i = 0, j = 0; i < 256; i++, j++,idx += 32) + { + if(idx < 512 + 16) + mpeg3_decwin[idx+16] = mpeg3_decwin[idx] = (double)mpeg3_intwinbase[j] / 65536.0 * (double)scaleval; + + if(i % 32 == 31) + idx -= 1023; + if(i % 64 == 63) + scaleval = -scaleval; + } + + for( ; i < 512; i++, j--, idx += 32) + { + if(idx < 512 + 16) + mpeg3_decwin[idx + 16] = mpeg3_decwin[idx] = (double)mpeg3_intwinbase[j] / 65536.0 * (double)scaleval; + + if(i % 32 == 31) + idx -= 1023; + if(i % 64 == 63) + scaleval = -scaleval; + } + +#ifdef USE_3DNOW + if(!param.down_sample) + { + for(i = 0; i < 512 + 32; i++) + { + mpeg3_decwin[512 + 31 - i] *= 65536.0; /* allows faster clipping in 3dnow code */ + mpeg3_decwin[512 + 32 + i] = mpeg3_decwin[512 + 31 - i]; + } + } +#endif + +/* Initialize AC3 */ + audio->ac3_lfsr_state = 1; + mpeg3audio_imdct_init(audio); +/* Initialize MPEG */ + mpeg3audio_init_layer2(audio); /* inits also shared tables with layer1 */ + mpeg3audio_init_layer3(audio); + return 0; +} diff --git a/core/multimedia/opieplayer/libmpeg3/audio/tables.h b/core/multimedia/opieplayer/libmpeg3/audio/tables.h new file mode 100644 index 0000000..7b14de1 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/tables.h @@ -0,0 +1,88 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ +#ifndef TABLES_H +#define TABLES_H + +extern int mpeg3_tabsel_123[2][3][16]; + +extern long mpeg3_freqs[9]; + +struct mpeg3_bandInfoStruct +{ + int longIdx[23]; + int longDiff[22]; + int shortIdx[14]; + int shortDiff[13]; +}; + + +extern mpeg3_real_t mpeg3_decwin[512 + 32]; +extern mpeg3_real_t mpeg3_cos64[16], mpeg3_cos32[8], mpeg3_cos16[4], mpeg3_cos8[2], mpeg3_cos4[1]; + +extern mpeg3_real_t *mpeg3_pnts[5]; + +extern int mpeg3_grp_3tab[32 * 3]; /* used: 27 */ +extern int mpeg3_grp_5tab[128 * 3]; /* used: 125 */ +extern int mpeg3_grp_9tab[1024 * 3]; /* used: 729 */ +extern long mpeg3_intwinbase[257]; +extern mpeg3_real_t mpeg3_COS6_1, mpeg3_COS6_2; + +#if defined(USE_FIXED_POINT) && !defined(PRINT_FIXED_POINT_TABLES) +# define REAL_MATRIX(var,dim1,dimn) mpeg3_real_t (*var)dimn +#else +# define REAL_MATRIX(var,dim1,dimn) mpeg3_real_t var dim1 dimn +#endif +extern REAL_MATRIX(mpeg3_muls, [27], [64]); /* also used by layer 1 */ +extern REAL_MATRIX(mpeg3_gainpow2, [256 + 118 + 4], ); +extern REAL_MATRIX(mpeg3_ispow, [8207], ); +extern REAL_MATRIX(mpeg3_aa_ca, [8], ); +extern REAL_MATRIX(mpeg3_aa_cs, [8], ); +extern REAL_MATRIX(mpeg3_win, [4], [36]); +extern REAL_MATRIX(mpeg3_win1, [4], [36]); +extern REAL_MATRIX(mpeg3_COS1, [12], [6]); +extern REAL_MATRIX(mpeg3_COS9, [9], ); +extern REAL_MATRIX(mpeg3_tfcos36, [9], ); +extern REAL_MATRIX(mpeg3_tfcos12, [3], ); +extern REAL_MATRIX(mpeg3_cos9, [3], ); +extern REAL_MATRIX(mpeg3_cos18, [3], ); +extern REAL_MATRIX(mpeg3_tan1_1, [16], ); +extern REAL_MATRIX(mpeg3_tan2_1, [16], ); +extern REAL_MATRIX(mpeg3_tan1_2, [16], ); +extern REAL_MATRIX(mpeg3_tan2_2, [16], ); +extern REAL_MATRIX(mpeg3_pow1_1, [2], [16]); +extern REAL_MATRIX(mpeg3_pow2_1, [2], [16]); +extern REAL_MATRIX(mpeg3_pow1_2, [2], [16]); +extern REAL_MATRIX(mpeg3_pow2_2, [2], [16]); + +extern int mpeg3_longLimit[9][23]; +extern int mpeg3_shortLimit[9][14]; + +extern struct mpeg3_bandInfoStruct mpeg3_bandInfo[9]; + +extern int mpeg3_mapbuf0[9][152]; +extern int mpeg3_mapbuf1[9][156]; +extern int mpeg3_mapbuf2[9][44]; +extern int *mpeg3_map[9][3]; +extern int *mpeg3_mapend[9][3]; + +extern unsigned int mpeg3_n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */ +extern unsigned int mpeg3_i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */ + +#endif diff --git a/core/multimedia/opieplayer/libmpeg3/audio/uncouple.c b/core/multimedia/opieplayer/libmpeg3/audio/uncouple.c new file mode 100644 index 0000000..d87a078 --- a/dev/null +++ b/core/multimedia/opieplayer/libmpeg3/audio/uncouple.c @@ -0,0 +1,135 @@ +/* + * + * uncouple.c Copyright (C) Aaron Holtzman - May 1999 + * + * This file is part of libmpeg3 + * + * libmpeg3 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * libmpeg3 is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "../bitstream.h" +#include "mpeg3audio.h" + +static unsigned char mpeg3_first_bit_lut[256] = +{ + 0, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 +}; + +/* Converts an unsigned exponent in the range of 0-24 and a 16 bit mantissa + * to an IEEE single precision floating point value */ +static inline void mpeg3audio_ac3_convert_to_float(unsigned short exp, + unsigned short mantissa, + unsigned MPEG3_INT32 *dest) +{ + int num; + short exponent; + int i; + +/* If the mantissa is zero we can simply return zero */ + if(mantissa == 0) + { + *dest = 0; + return; + } + +/* Exponent is offset by 127 in IEEE format minus the shift to + * align the mantissa to 1.f (subtracted in the final result) */ + exponent = 127 - exp; + +/* Take care of the one asymmetric negative number */ + if(mantissa == 0x8000) + mantissa++; + +/* Extract the sign bit, invert the mantissa if it's negative, and + shift out the sign bit */ + if(mantissa & 0x8000) + { + mantissa *= -1; + num = 0x80000000 + (exponent << 23); + } + else + { + mantissa *= 1; + num = exponent << 23; + } + +/* Find the index of the most significant one bit */ + i = mpeg3_first_bit_lut[mantissa >> 8]; + + if(i == 0) + i = mpeg3_first_bit_lut[mantissa & 0xff] + 8; + + *dest = num - (i << 23) + (mantissa << (7 + i)); + return; +} + + +int mpeg3audio_ac3_uncouple(mpeg3audio_t *audio, + mpeg3_ac3bsi_t *bsi, + mpeg3_ac3audblk_t *audblk, + mpeg3_stream_coeffs_t *coeffs) +{ + int i, j; + + for(i = 0; i < bsi->nfchans; i++) + { + for(j = 0; j < audblk->endmant[i]; j++) + mpeg3audio_ac3_convert_to_float(audblk->fbw_exp[i][j], + audblk->chmant[i][j], + (unsigned MPEG3_INT32*)&coeffs->fbw[i][j]); + } + + if(audblk->cplinu) + { + for(i = 0; i < bsi->nfchans; i++) + { + if(audblk->chincpl[i]) + { + mpeg3audio_ac3_uncouple_channel(audio, + coeffs, + audblk, + i); + } + } + + } + + if(bsi->lfeon) + { +/* There are always 7 mantissas for lfe */ + for(j = 0; j < 7 ; j++) + mpeg3audio_ac3_convert_to_float(audblk->lfe_exp[j], + audblk->lfemant[j], + (unsigned MPEG3_INT32*)&coeffs->lfe[j]); + + } + return 0; +} |