From 9e126f7ed2f73b26ef440c1cc54d0dc0e6308f68 Mon Sep 17 00:00:00 2001 From: llornkcor Date: Wed, 24 Jul 2002 15:18:26 +0000 Subject: added adpcm hidden config, and fixed tmp file moving before recording.. heh --- (limited to 'core/applets') diff --git a/core/applets/vmemo/adpcm.c b/core/applets/vmemo/adpcm.c new file mode 100644 index 0000000..c4dfa50 --- a/dev/null +++ b/core/applets/vmemo/adpcm.c @@ -0,0 +1,252 @@ +/*********************************************************** +Copyright 1992 by Stichting Mathematisch Centrum, Amsterdam, The +Netherlands. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the names of Stichting Mathematisch +Centrum or CWI not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior permission. + +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +******************************************************************/ + +/* +** Intel/DVI ADPCM coder/decoder. +** +** The algorithm for this coder was taken from the IMA Compatability Project +** proceedings, Vol 2, Number 2; May 1992. +** +** Version 1.2, 18-Dec-92. +** +** Change log: +** - Fixed a stupid bug, where the delta was computed as +** stepsize*code/4 in stead of stepsize*(code+0.5)/4. +** - There was an off-by-one error causing it to pick +** an incorrect delta once in a blue moon. +** - The NODIVMUL define has been removed. Computations are now always done +** using shifts, adds and subtracts. It turned out that, because the standard +** is defined using shift/add/subtract, you needed bits of fixup code +** (because the div/mul simulation using shift/add/sub made some rounding +** errors that real div/mul don't make) and all together the resultant code +** ran slower than just using the shifts all the time. +** - Changed some of the variable names to be more meaningful. +*/ + +#include "adpcm.h" +#include /*DBG*/ + +#ifndef __STDC__ +#define signed +#endif + +/* Intel ADPCM step variation table */ +static int indexTable[16] = { + -1, -1, -1, -1, 2, 4, 6, 8, + -1, -1, -1, -1, 2, 4, 6, 8, +}; + +static int stepsizeTable[89] = { + 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, + 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, + 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, + 130, 143, 157, 173, 190, 209, 230, 253, 279, 307, + 337, 371, 408, 449, 494, 544, 598, 658, 724, 796, + 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, + 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, + 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, + 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 +}; + +void +adpcm_coder(indata, outdata, len, state) + short indata[]; + char outdata[]; + int len; + struct adpcm_state *state; +{ + short *inp; /* Input buffer pointer */ + signed char *outp; /* output buffer pointer */ + int val; /* Current input sample value */ + int sign; /* Current adpcm sign bit */ + int delta; /* Current adpcm output value */ + int diff; /* Difference between val and valprev */ + int step; /* Stepsize */ + int valpred; /* Predicted output value */ + int vpdiff; /* Current change to valpred */ + int index; /* Current step change index */ + int outputbuffer; /* place to keep previous 4-bit value */ + int bufferstep; /* toggle between outputbuffer/output */ + + outp = (signed char *)outdata; + inp = indata; + + valpred = state->valprev; + index = state->index; + step = stepsizeTable[index]; + + bufferstep = 1; + + for ( ; len > 0 ; len-- ) { + val = *inp++; + + /* Step 1 - compute difference with previous value */ + diff = val - valpred; + sign = (diff < 0) ? 8 : 0; + if ( sign ) diff = (-diff); + + /* Step 2 - Divide and clamp */ + /* Note: + ** This code *approximately* computes: + ** delta = diff*4/step; + ** vpdiff = (delta+0.5)*step/4; + ** but in shift step bits are dropped. The net result of this is + ** that even if you have fast mul/div hardware you cannot put it to + ** good use since the fixup would be too expensive. + */ + delta = 0; + vpdiff = (step >> 3); + + if ( diff >= step ) { + delta = 4; + diff -= step; + vpdiff += step; + } + step >>= 1; + if ( diff >= step ) { + delta |= 2; + diff -= step; + vpdiff += step; + } + step >>= 1; + if ( diff >= step ) { + delta |= 1; + vpdiff += step; + } + + /* Step 3 - Update previous value */ + if ( sign ) + valpred -= vpdiff; + else + valpred += vpdiff; + + /* Step 4 - Clamp previous value to 16 bits */ + if ( valpred > 32767 ) + valpred = 32767; + else if ( valpred < -32768 ) + valpred = -32768; + + /* Step 5 - Assemble value, update index and step values */ + delta |= sign; + + index += indexTable[delta]; + if ( index < 0 ) index = 0; + if ( index > 88 ) index = 88; + step = stepsizeTable[index]; + + /* Step 6 - Output value */ + if ( bufferstep ) { + outputbuffer = (delta << 4) & 0xf0; + } else { + *outp++ = (delta & 0x0f) | outputbuffer; + } + bufferstep = !bufferstep; + } + + /* Output last step, if needed */ + if ( !bufferstep ) + *outp++ = outputbuffer; + + state->valprev = valpred; + state->index = index; +} + +void +adpcm_decoder(indata, outdata, len, state) + char indata[]; + short outdata[]; + int len; + struct adpcm_state *state; +{ + signed char *inp; /* Input buffer pointer */ + short *outp; /* output buffer pointer */ + int sign; /* Current adpcm sign bit */ + int delta; /* Current adpcm output value */ + int step; /* Stepsize */ + int valpred; /* Predicted value */ + int vpdiff; /* Current change to valpred */ + int index; /* Current step change index */ + int inputbuffer; /* place to keep next 4-bit value */ + int bufferstep; /* toggle between inputbuffer/input */ + + outp = outdata; + inp = (signed char *)indata; + + valpred = state->valprev; + index = state->index; + step = stepsizeTable[index]; + + bufferstep = 0; + + for ( ; len > 0 ; len-- ) { + + /* Step 1 - get the delta value */ + if ( bufferstep ) { + delta = inputbuffer & 0xf; + } else { + inputbuffer = *inp++; + delta = (inputbuffer >> 4) & 0xf; + } + bufferstep = !bufferstep; + + /* Step 2 - Find new index value (for later) */ + index += indexTable[delta]; + if ( index < 0 ) index = 0; + if ( index > 88 ) index = 88; + + /* Step 3 - Separate sign and magnitude */ + sign = delta & 8; + delta = delta & 7; + + /* Step 4 - Compute difference and new predicted value */ + /* + ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment + ** in adpcm_coder. + */ + vpdiff = step >> 3; + if ( delta & 4 ) vpdiff += step; + if ( delta & 2 ) vpdiff += step>>1; + if ( delta & 1 ) vpdiff += step>>2; + + if ( sign ) + valpred -= vpdiff; + else + valpred += vpdiff; + + /* Step 5 - clamp output value */ + if ( valpred > 32767 ) + valpred = 32767; + else if ( valpred < -32768 ) + valpred = -32768; + + /* Step 6 - Update step value */ + step = stepsizeTable[index]; + + /* Step 7 - Output value */ + *outp++ = valpred; + } + + state->valprev = valpred; + state->index = index; +} diff --git a/core/applets/vmemo/adpcm.h b/core/applets/vmemo/adpcm.h new file mode 100644 index 0000000..9c17ffa --- a/dev/null +++ b/core/applets/vmemo/adpcm.h @@ -0,0 +1,19 @@ +/* +** adpcm.h - include file for adpcm coder. +** +** Version 1.0, 7-Jul-92. +*/ + +struct adpcm_state { + short valprev; /* Previous output value */ + char index; /* Index into stepsize table */ +}; + +#ifdef __STDC__ +#define ARGS(x) x +#else +#define ARGS(x) () +#endif + +void adpcm_coder ARGS((short [], char [], int, struct adpcm_state *)); +void adpcm_decoder ARGS((char [], short [], int, struct adpcm_state *)); diff --git a/core/applets/vmemo/vmemo.cpp b/core/applets/vmemo/vmemo.cpp index b77e3b8..b5239eb 100644 --- a/core/applets/vmemo/vmemo.cpp +++ b/core/applets/vmemo/vmemo.cpp @@ -14,6 +14,10 @@ * $Id$ */ // Sun 03-17-2002 L.J.Potter +extern "C" { +#include "adpcm.h" +} + #include #include #include @@ -57,6 +61,13 @@ typedef struct _waveheader { #define WAVE_MONO 1 #define WAVE_STEREO 2 +struct adpcm_state encoder_state; +//struct adpcm_state decoder_state; + +#define WAVE_FORMAT_DVI_ADPCM (0x0011) +#define WAVE_FORMAT_PCM (0x0001) + + #include "vmemo.h" #include @@ -196,8 +207,7 @@ static char * vmemo_xpm[] = { VMemo::VMemo( QWidget *parent, const char *_name ) - : QWidget( parent, _name ) -{ + : QWidget( parent, _name ) { setFixedHeight( 18 ); setFixedWidth( 14 ); @@ -213,6 +223,7 @@ VMemo::VMemo( QWidget *parent, const char *_name ) Config vmCfg("Vmemo"); vmCfg.setGroup("Defaults"); int toggleKey = setToggleButton(vmCfg.readNumEntry("toggleKey", -1)); + useADPCM = vmCfg.readBoolEntry("use_ADPCM", 0); qDebug("toggleKey %d", toggleKey); @@ -243,12 +254,10 @@ VMemo::VMemo( QWidget *parent, const char *_name ) } } -VMemo::~VMemo() -{ +VMemo::~VMemo() { } -void VMemo::receive( const QCString &msg, const QByteArray &data ) -{ +void VMemo::receive( const QCString &msg, const QByteArray &data ) { qDebug("receive"); QDataStream stream( data, IO_ReadOnly ); if (msg == "toggleRecord()") { @@ -264,14 +273,12 @@ void VMemo::receive( const QCString &msg, const QByteArray &data ) } } -void VMemo::paintEvent( QPaintEvent* ) -{ +void VMemo::paintEvent( QPaintEvent* ) { QPainter p(this); p.drawPixmap( 0, 1,( const char** ) vmemo_xpm ); } -void VMemo::mousePressEvent( QMouseEvent * me) -{ +void VMemo::mousePressEvent( QMouseEvent * me) { // just to be safe if (recording) { recording = FALSE; @@ -279,8 +286,7 @@ void VMemo::mousePressEvent( QMouseEvent * me) } /* No mousePress/mouseRelease recording on the iPAQ. The REC button on the iPAQ calls these functions mousePressEvent and mouseReleaseEvent with a NULL parameter. */ - if ( me->button() != LeftButton) - + if ( me->button() != LeftButton || me != NULL) // if (!systemZaurus && me != NULL) return; @@ -290,8 +296,7 @@ void VMemo::mousePressEvent( QMouseEvent * me) stopRecording(); } -void VMemo::mouseReleaseEvent( QMouseEvent * ) -{ +void VMemo::mouseReleaseEvent( QMouseEvent * ) { // if(usingIcon && !recording) // stopRecording(); } @@ -375,9 +380,10 @@ bool VMemo::startRecording() { ::close(dsp); return FALSE; } - QString cmd; - cmd.sprintf("mv %s "+fileName,pointer); + record(); + QString cmd; + cmd.sprintf("mv %s "+fileName, pointer); // move tmp file to regular file here system(cmd.latin1()); @@ -392,8 +398,6 @@ bool VMemo::startRecording() { l.setType("audio/x-wav"); l.setCategories(cats); l.writeLink(); - - record(); return TRUE; } @@ -414,8 +418,7 @@ void VMemo::stopRecording() { hide(); } -int VMemo::openDSP() -{ +int VMemo::openDSP() { Config cfg("Vmemo"); cfg.setGroup("Record"); @@ -467,8 +470,7 @@ int VMemo::openDSP() return 1; } -int VMemo::openWAV(const char *filename) -{ +int VMemo::openWAV(const char *filename) { track.setName(filename); if(!track.open(IO_WriteOnly|IO_Truncate|IO_Raw)) { errorMsg=filename; @@ -484,7 +486,10 @@ int VMemo::openWAV(const char *filename) wh.chunk_type = WAVE; wh.sub_chunk = FMT; wh.sc_len = 16; - wh.format = PCM_CODE; + if(useADPCM) + wh.format = WAVE_FORMAT_DVI_ADPCM;//PCM_CODE; + else + wh.format = PCM_CODE; wh.modus = channels; wh.sample_fq = speed; wh.byte_p_sec = speed * channels * resolution/8; @@ -499,8 +504,7 @@ int VMemo::openWAV(const char *filename) return 1; } -void VMemo::record(void) -{ +void VMemo::record(void) { int length=0, result, value; QString msg; msg.sprintf("Recording format %d", format); @@ -511,84 +515,46 @@ void VMemo::record(void) t_timer->start( sRate * 1000+1000, TRUE); - if(systemZaurus) { +// if(systemZaurus) { +// } else { // 16 bit only capabilities - msg.sprintf("Recording format zaurus"); + msg.sprintf("Recording format other"); qDebug(msg); - signed short sound[1024], monoBuffer[1024]; - - if(format==AFMT_S16_LE) { + int bufsize=1024; + int bytesWritten=0; + signed short sound[1024], monoBuffer[1024]; + char abuf[bufsize/2]; + short sbuf[bufsize]; + while(recording) { - while(recording) { - - result = read(dsp, sound, 1024); // 8192 - // int j=0; - - for (int i = 0; i < result; i++) { //since Z is mono do normally - monoBuffer[i] = sound[i]; + if(useADPCM) + result = read( dsp, sbuf, bufsize); // 8192 + else + result = read(dsp, sound, 1024); // 8192 + if( result <= 0) { + perror("recording error "); +// qDebug(currentFileName); + QMessageBox::message(tr("Note"),tr("error recording")); + recording=FALSE;; + break; } - length+=write(wav, monoBuffer, result); - if(length<0) - recording=false; - // for (int i = 0; i < result; i+=2) { - // monoBuffer[j] = sound[i]; - // // monoBuffer[j] = (sound[i]+sound[i+1])/2; - - // j++; - // } - qApp->processEvents(); - // printf("%d\r",length); - // fflush(stdout); - } - - } else { //AFMT_U8 - // 8bit unsigned - unsigned short sound[1024], monoBuffer[1024]; - while(recording) { - result = read(dsp, sound, 1024); // 8192 - // int j=0; + if(useADPCM) { + adpcm_coder( sbuf, abuf, result/2, &encoder_state); + bytesWritten = ::write(wav, abuf, result/4); - // if(systemZaurus) { + } else { + for (int i = 0; i < result; i++) { //since Z is mono do normally + monoBuffer[i] = sound[i]; + } - for (int i = 0; i < result; i++) { //since Z is mono do normally - monoBuffer[i] = sound[i]; + length+=write(wav, monoBuffer, result); } - - length+=write(wav, monoBuffer, result); - - // for (int i = 0; i < result; i+=2) { - // monoBuffer[j] = (sound[i]+sound[i+1])/2; - // j++; - // } - // length+=write(wav, monoBuffer, result/2); - length += result; - // printf("%d\r",length); - // fflush(stdout); - } - - qApp->processEvents(); - } - - } else { // 16 bit only capabilities - - - msg.sprintf("Recording format other"); - qDebug(msg); - - signed short sound[1024];//, monoBuffer[512]; - - while(recording) { - - result = read(dsp, sound, 1024); // 8192 - - write(wav, sound, result); - length += result; + length +=bytesWritten; if(length<0) { - recording=false; perror("dev/dsp's is a lookin' messy"); QMessageBox::message("Vmemo"," Done1 recording\n"+ fileName); @@ -600,7 +566,7 @@ void VMemo::record(void) // qDebug("file has length of %d lasting %d seconds", // length, (( length / speed) / channels) / 2 ); // medialplayer states wrong length in secs - } + // } //>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<