ARM: convert VFP code to UAL syntax
[libav.git] / libavformat / riff.c
CommitLineData
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1/*
2 * RIFF codec tags
3 * Copyright (c) 2000 Fabrice Bellard.
4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
9d9f4119 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
245976da 22#include "libavcodec/avcodec.h"
9d9f4119 23#include "avformat.h"
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24#include "riff.h"
25
26/* Note: when encoding, the first matching tag is used, so order is
27 important if multiple tags possible for a given codec. */
7caf0cc6 28const AVCodecTag codec_bmp_tags[] = {
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29 { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
30 { CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
31 { CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
32 { CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
33 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
34 { CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
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35 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
36 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
37 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
38 { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
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39 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
40 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
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41 { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
42 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
43 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
44 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
45 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
46 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
36b0782e 47 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
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48 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
49 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
50 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
51 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
52 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
53 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
ab0b2e55 54 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
1b46683c 55 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
26ae363e 56 { CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
b8cf645b 57 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
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58 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
59 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
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60 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
61 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
62 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
63 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
64 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
65 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
66 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
ab0b2e55 67 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
ab0b2e55 68 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
ab0b2e55 69 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
ab0b2e55 70 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
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71 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
72 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
73 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
74 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
75 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
76 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
77 { CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
78 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
79 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
80 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
81 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
82 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
83 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
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84 { CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
85 { CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
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86 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
87 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
88 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
89 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
90 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
91 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
92 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
93 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
94 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
95 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
96 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
97 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
98 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
99 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
36b0782e 100 { CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
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101 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
102 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
103 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
104 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
105 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
106 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
107 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
108 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
109 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
110 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
111 { CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
112 { CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
113 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
114 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
115 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
116 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
117 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
118 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
119 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
120 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
121 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
122 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
123 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
124 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
36b0782e 125 { CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
b30cb420 126 { CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
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127 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
128 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
129 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
130 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
131 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
132 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
133 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
134 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
135 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
136 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
137 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
138 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
139 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
140 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
141 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
142 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
143 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
144 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
145 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
146 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
147 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
148 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
149 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
150 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
151 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
152 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
153 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
154 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
155 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
156 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
157 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
158 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
159 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
160 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
161 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
162 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
163 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
164 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
165 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
166 { CODEC_ID_CLJR, MKTAG('c', 'l', 'j', 'r') },
eb64714c 167 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
ab0b2e55 168 { CODEC_ID_NONE, 0 }
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169};
170
7caf0cc6 171const AVCodecTag codec_wav_tags[] = {
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172 { CODEC_ID_PCM_S16LE, 0x0001 },
173 { CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
174 { CODEC_ID_PCM_S24LE, 0x0001 },
175 { CODEC_ID_PCM_S32LE, 0x0001 },
176 { CODEC_ID_ADPCM_MS, 0x0002 },
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177 { CODEC_ID_PCM_F32LE, 0x0003 },
178 { CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
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179 { CODEC_ID_PCM_ALAW, 0x0006 },
180 { CODEC_ID_PCM_MULAW, 0x0007 },
181 { CODEC_ID_WMAVOICE, 0x000A },
182 { CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
4e0e6888 183 { CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
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184 { CODEC_ID_ADPCM_YAMAHA, 0x0020 },
185 { CODEC_ID_TRUESPEECH, 0x0022 },
186 { CODEC_ID_GSM_MS, 0x0031 },
187 { CODEC_ID_ADPCM_G726, 0x0045 },
188 { CODEC_ID_MP2, 0x0050 },
189 { CODEC_ID_MP3, 0x0055 },
190 { CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
191 { CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
192 { CODEC_ID_VOXWARE, 0x0075 },
193 { CODEC_ID_AAC, 0x00ff },
faeedbbb 194 { CODEC_ID_SIPR, 0x0130 },
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195 { CODEC_ID_WMAV1, 0x0160 },
196 { CODEC_ID_WMAV2, 0x0161 },
197 { CODEC_ID_WMAPRO, 0x0162 },
800b9c24 198 { CODEC_ID_WMALOSSLESS, 0x0163 },
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199 { CODEC_ID_ADPCM_CT, 0x0200 },
200 { CODEC_ID_ATRAC3, 0x0270 },
201 { CODEC_ID_IMC, 0x0401 },
202 { CODEC_ID_AC3, 0x2000 },
203 { CODEC_ID_DTS, 0x2001 },
204 { CODEC_ID_SONIC, 0x2048 },
205 { CODEC_ID_SONIC_LS, 0x2048 },
206 { CODEC_ID_AAC, 0x706d },
207 { CODEC_ID_FLAC, 0xF1AC },
208 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
209 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
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210
211 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
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212 // for NuppelVideo (nuv.c)
213 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
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214 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
215 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
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216 { 0, 0 },
217};
218
9d9f4119 219#ifdef CONFIG_MUXERS
bc5c918e 220int64_t start_tag(ByteIOContext *pb, const char *tag)
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221{
222 put_tag(pb, tag);
223 put_le32(pb, 0);
224 return url_ftell(pb);
225}
226
bc5c918e 227void end_tag(ByteIOContext *pb, int64_t start)
9d9f4119 228{
bc5c918e 229 int64_t pos;
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230
231 pos = url_ftell(pb);
232 url_fseek(pb, start - 4, SEEK_SET);
233 put_le32(pb, (uint32_t)(pos - start));
234 url_fseek(pb, pos, SEEK_SET);
235}
236
237/* WAVEFORMATEX header */
238/* returns the size or -1 on error */
239int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
240{
241 int bps, blkalign, bytespersec;
242 int hdrsize = 18;
243
244 if(!enc->codec_tag || enc->codec_tag > 0xffff)
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245 return -1;
246
247 put_le16(pb, enc->codec_tag);
248 put_le16(pb, enc->channels);
249 put_le32(pb, enc->sample_rate);
235a51ad 250 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
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251 bps = 0;
252 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
253 bps = 4;
9d9f4119 254 } else {
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255 if (!(bps = av_get_bits_per_sample(enc->codec_id)))
256 bps = 16; // default to 16
9d9f4119 257 }
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258 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
259 av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
9376710d 260 }
9d9f4119 261
52cf3954 262 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_AC3) {
755bfeab 263 blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
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264 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
265 } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
266 blkalign = 1;
267 } else if (enc->block_align != 0) { /* specified by the codec */
268 blkalign = enc->block_align;
269 } else
270 blkalign = enc->channels*bps >> 3;
271 if (enc->codec_id == CODEC_ID_PCM_U8 ||
272 enc->codec_id == CODEC_ID_PCM_S24LE ||
273 enc->codec_id == CODEC_ID_PCM_S32LE ||
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274 enc->codec_id == CODEC_ID_PCM_F32LE ||
275 enc->codec_id == CODEC_ID_PCM_F64LE ||
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276 enc->codec_id == CODEC_ID_PCM_S16LE) {
277 bytespersec = enc->sample_rate * blkalign;
278 } else {
279 bytespersec = enc->bit_rate / 8;
280 }
281 put_le32(pb, bytespersec); /* bytes per second */
282 put_le16(pb, blkalign); /* block align */
283 put_le16(pb, bps); /* bits per sample */
284 if (enc->codec_id == CODEC_ID_MP3) {
285 put_le16(pb, 12); /* wav_extra_size */
286 hdrsize += 12;
287 put_le16(pb, 1); /* wID */
288 put_le32(pb, 2); /* fdwFlags */
289 put_le16(pb, 1152); /* nBlockSize */
290 put_le16(pb, 1); /* nFramesPerBlock */
291 put_le16(pb, 1393); /* nCodecDelay */
292 } else if (enc->codec_id == CODEC_ID_MP2) {
293 put_le16(pb, 22); /* wav_extra_size */
294 hdrsize += 22;
295 put_le16(pb, 2); /* fwHeadLayer */
296 put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
297 put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
298 put_le16(pb, 0); /* fwHeadModeExt */
299 put_le16(pb, 1); /* wHeadEmphasis */
300 put_le16(pb, 16); /* fwHeadFlags */
301 put_le32(pb, 0); /* dwPTSLow */
302 put_le32(pb, 0); /* dwPTSHigh */
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303 } else if (enc->codec_id == CODEC_ID_GSM_MS) {
304 put_le16(pb, 2); /* wav_extra_size */
305 hdrsize += 2;
306 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
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307 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
308 put_le16(pb, 2); /* wav_extra_size */
309 hdrsize += 2;
5b77a81a 310 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
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311 } else if(enc->extradata_size){
312 put_le16(pb, enc->extradata_size);
313 put_buffer(pb, enc->extradata, enc->extradata_size);
314 hdrsize += enc->extradata_size;
315 if(hdrsize&1){
316 hdrsize++;
317 put_byte(pb, 0);
318 }
319 } else {
320 hdrsize -= 2;
321 }
322
323 return hdrsize;
324}
325
326/* BITMAPINFOHEADER header */
7caf0cc6 327void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
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328{
329 put_le32(pb, 40 + enc->extradata_size); /* size */
330 put_le32(pb, enc->width);
331 put_le32(pb, enc->height);
332 put_le16(pb, 1); /* planes */
333
dd1c8f3e 334 put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
9d9f4119 335 /* compression type */
bb85077f 336 put_le32(pb, enc->codec_tag);
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337 put_le32(pb, enc->width * enc->height * 3);
338 put_le32(pb, 0);
339 put_le32(pb, 0);
340 put_le32(pb, 0);
341 put_le32(pb, 0);
342
343 put_buffer(pb, enc->extradata, enc->extradata_size);
344
345 if (enc->extradata_size & 1)
346 put_byte(pb, 0);
347}
348#endif //CONFIG_MUXERS
349
350#ifdef CONFIG_DEMUXERS
351/* We could be given one of the three possible structures here:
352 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
353 * is an expansion of the previous one with the fields added
354 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
355 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
356 * an openended structure.
357 */
358void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
359{
360 int id;
361
362 id = get_le16(pb);
363 codec->codec_type = CODEC_TYPE_AUDIO;
364 codec->codec_tag = id;
365 codec->channels = get_le16(pb);
366 codec->sample_rate = get_le32(pb);
367 codec->bit_rate = get_le32(pb) * 8;
368 codec->block_align = get_le16(pb);
369 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
dd1c8f3e 370 codec->bits_per_coded_sample = 8;
9d9f4119 371 }else
dd1c8f3e 372 codec->bits_per_coded_sample = get_le16(pb);
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373 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
374 int cbSize = get_le16(pb); /* cbSize */
375 size -= 18;
376 cbSize = FFMIN(size, cbSize);
377 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
dd1c8f3e 378 codec->bits_per_coded_sample = get_le16(pb);
4fd71a0e 379 codec->channel_layout = get_le32(pb); /* dwChannelMask */
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380 id = get_le32(pb); /* 4 first bytes of GUID */
381 url_fskip(pb, 12); /* skip end of GUID */
382 cbSize -= 22;
383 size -= 22;
384 }
385 codec->extradata_size = cbSize;
386 if (cbSize > 0) {
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387 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
388 get_buffer(pb, codec->extradata, codec->extradata_size);
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389 size -= cbSize;
390 }
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391
392 /* It is possible for the chunk to contain garbage at the end */
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393 if (size > 0)
394 url_fskip(pb, size);
9d9f4119 395 }
dd1c8f3e 396 codec->codec_id = wav_codec_get_id(id, codec->bits_per_coded_sample);
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397}
398
399
400int wav_codec_get_id(unsigned int tag, int bps)
401{
402 int id;
403 id = codec_get_id(codec_wav_tags, tag);
404 if (id <= 0)
405 return id;
406 /* handle specific u8 codec */
407 if (id == CODEC_ID_PCM_S16LE && bps == 8)
408 id = CODEC_ID_PCM_U8;
409 if (id == CODEC_ID_PCM_S16LE && bps == 24)
410 id = CODEC_ID_PCM_S24LE;
411 if (id == CODEC_ID_PCM_S16LE && bps == 32)
412 id = CODEC_ID_PCM_S32LE;
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413 if (id == CODEC_ID_PCM_F32LE && bps == 64)
414 id = CODEC_ID_PCM_F64LE;
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415 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
416 id = CODEC_ID_PCM_ZORK;
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417 return id;
418}
419#endif // CONFIG_DEMUXERS
420
421void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
422{
423 int gcd;
424
425 *au_ssize= stream->block_align;
426 if(stream->frame_size && stream->sample_rate){
427 *au_scale=stream->frame_size;
428 *au_rate= stream->sample_rate;
429 }else if(stream->codec_type == CODEC_TYPE_VIDEO){
430 *au_scale= stream->time_base.num;
431 *au_rate = stream->time_base.den;
432 }else{
433 *au_scale= stream->block_align ? stream->block_align*8 : 8;
a7805e29 434 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
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435 }
436 gcd= ff_gcd(*au_scale, *au_rate);
437 *au_scale /= gcd;
438 *au_rate /= gcd;
439}