author | kergoth <kergoth> | 2002-01-25 22:14:26 (UTC) |
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committer | kergoth <kergoth> | 2002-01-25 22:14:26 (UTC) |
commit | 15318cad33835e4e2dc620d033e43cd930676cdd (patch) (unidiff) | |
tree | c2fa0399a2c47fda8e2cd0092c73a809d17f68eb /core/multimedia/opieplayer/libmad/stream.h | |
download | opie-15318cad33835e4e2dc620d033e43cd930676cdd.zip opie-15318cad33835e4e2dc620d033e43cd930676cdd.tar.gz opie-15318cad33835e4e2dc620d033e43cd930676cdd.tar.bz2 |
Initial revision
Diffstat (limited to 'core/multimedia/opieplayer/libmad/stream.h') (more/less context) (show whitespace changes)
-rw-r--r-- | core/multimedia/opieplayer/libmad/stream.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/core/multimedia/opieplayer/libmad/stream.h b/core/multimedia/opieplayer/libmad/stream.h new file mode 100644 index 0000000..cf3280e --- a/dev/null +++ b/core/multimedia/opieplayer/libmad/stream.h | |||
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1 | /* | ||
2 | * mad - MPEG audio decoder | ||
3 | * Copyright (C) 2000-2001 Robert Leslie | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or modify | ||
6 | * it under the terms of the GNU General Public License as published by | ||
7 | * the Free Software Foundation; either version 2 of the License, or | ||
8 | * (at your option) any later version. | ||
9 | * | ||
10 | * This program is distributed in the hope that it will be useful, | ||
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | * GNU General Public License for more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program; if not, write to the Free Software | ||
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
18 | * | ||
19 | * $Id$ | ||
20 | */ | ||
21 | |||
22 | # ifndef LIBMAD_STREAM_H | ||
23 | # define LIBMAD_STREAM_H | ||
24 | |||
25 | # include "bit.h" | ||
26 | |||
27 | # define MAD_BUFFER_GUARD8 | ||
28 | # define MAD_BUFFER_MDLEN(511 + 2048 + MAD_BUFFER_GUARD) | ||
29 | |||
30 | enum mad_error { | ||
31 | MAD_ERROR_BUFLEN = 0x0001,/* input buffer too small (or EOF) */ | ||
32 | MAD_ERROR_BUFPTR = 0x0002,/* invalid (null) buffer pointer */ | ||
33 | |||
34 | MAD_ERROR_NOMEM = 0x0031,/* not enough memory */ | ||
35 | |||
36 | MAD_ERROR_LOSTSYNC = 0x0101,/* lost synchronization */ | ||
37 | MAD_ERROR_BADLAYER = 0x0102,/* reserved header layer value */ | ||
38 | MAD_ERROR_BADBITRATE = 0x0103,/* forbidden bitrate value */ | ||
39 | MAD_ERROR_BADSAMPLERATE = 0x0104,/* reserved sample frequency value */ | ||
40 | MAD_ERROR_BADEMPHASIS = 0x0105,/* reserved emphasis value */ | ||
41 | |||
42 | MAD_ERROR_BADCRC = 0x0201,/* CRC check failed */ | ||
43 | MAD_ERROR_BADBITALLOC = 0x0211,/* forbidden bit allocation value */ | ||
44 | MAD_ERROR_BADSCALEFACTOR = 0x0221,/* bad scalefactor index */ | ||
45 | MAD_ERROR_BADFRAMELEN = 0x0231,/* bad frame length */ | ||
46 | MAD_ERROR_BADBIGVALUES = 0x0232,/* bad big_values count */ | ||
47 | MAD_ERROR_BADBLOCKTYPE = 0x0233,/* reserved block_type */ | ||
48 | MAD_ERROR_BADSCFSI = 0x0234,/* bad scalefactor selection info */ | ||
49 | MAD_ERROR_BADDATAPTR = 0x0235,/* bad main_data_begin pointer */ | ||
50 | MAD_ERROR_BADPART3LEN = 0x0236,/* bad audio data length */ | ||
51 | MAD_ERROR_BADHUFFTABLE = 0x0237,/* bad Huffman table select */ | ||
52 | MAD_ERROR_BADHUFFDATA = 0x0238,/* Huffman data overrun */ | ||
53 | MAD_ERROR_BADSTEREO = 0x0239/* incompatible block_type for JS */ | ||
54 | }; | ||
55 | |||
56 | # define MAD_RECOVERABLE(error)((error) & 0xff00) | ||
57 | |||
58 | struct mad_stream { | ||
59 | unsigned char const *buffer; /* input bitstream buffer */ | ||
60 | unsigned char const *bufend; /* end of buffer */ | ||
61 | unsigned long skiplen; /* bytes to skip before next frame */ | ||
62 | |||
63 | int sync; /* stream sync found */ | ||
64 | unsigned long freerate; /* free bitrate (fixed) */ | ||
65 | |||
66 | unsigned char const *this_frame;/* start of current frame */ | ||
67 | unsigned char const *next_frame;/* start of next frame */ | ||
68 | struct mad_bitptr ptr; /* current processing bit pointer */ | ||
69 | |||
70 | struct mad_bitptr anc_ptr; /* ancillary bits pointer */ | ||
71 | unsigned int anc_bitlen; /* number of ancillary bits */ | ||
72 | |||
73 | unsigned char (*main_data)[MAD_BUFFER_MDLEN]; | ||
74 | /* Layer III main_data() */ | ||
75 | unsigned int md_len; /* bytes in main_data */ | ||
76 | |||
77 | int options; /* decoding options (see below) */ | ||
78 | enum mad_error error; /* error code (see above) */ | ||
79 | }; | ||
80 | |||
81 | enum { | ||
82 | MAD_OPTION_IGNORECRC = 0x0001,/* ignore CRC errors */ | ||
83 | MAD_OPTION_HALFSAMPLERATE = 0x0002,/* generate PCM at 1/2 sample rate */ | ||
84 | # if 0 /* not yet implemented */ | ||
85 | MAD_OPTION_LEFTCHANNEL = 0x0010,/* decode left channel only */ | ||
86 | MAD_OPTION_RIGHTCHANNEL = 0x0020,/* decode right channel only */ | ||
87 | MAD_OPTION_SINGLECHANNEL = 0x0030,/* combine channels */ | ||
88 | # endif | ||
89 | }; | ||
90 | |||
91 | void mad_stream_init(struct mad_stream *); | ||
92 | void mad_stream_finish(struct mad_stream *); | ||
93 | |||
94 | # define mad_stream_options(stream, opts) ((stream)->options = (opts)) | ||
95 | |||
96 | void mad_stream_buffer(struct mad_stream *, | ||
97 | unsigned char const *, unsigned long); | ||
98 | void mad_stream_skip(struct mad_stream *, unsigned long); | ||
99 | |||
100 | int mad_stream_sync(struct mad_stream *); | ||
101 | |||
102 | # endif | ||