fix memory leaks in vp3 decoder
[libav.git] / libavformat / riff.c
CommitLineData
9d9f4119
MR
1/*
2 * RIFF codec tags
3 * Copyright (c) 2000 Fabrice Bellard.
4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
9d9f4119
MR
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,
9d9f4119
MR
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
9d9f4119
MR
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "avformat.h"
23#include "avcodec.h"
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[] = {
9d9f4119
MR
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') },
35
36 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
37 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
38 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
39 { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
40
41 /* added based on MPlayer */
42 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
43 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
44
7caf0cc6
MN
45 { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
46 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
47 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
48 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
9d9f4119
MR
49 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
50 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
51 { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
52
53 /* added based on MPlayer */
54 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
55 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
56 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
57 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
58 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
59 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
60
61 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
62
7caf0cc6 63 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
9d9f4119
MR
64 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
65
66 /* added based on MPlayer */
67 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
68 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
69 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
70 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
71 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
72 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
73 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
74
75 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
76
77 /* added based on MPlayer */
78 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
79
80 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
81
82 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
83
84 /* added based on MPlayer */
85 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
86 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
87 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
88 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
89 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
23ef0575 90 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
9d9f4119
MR
91 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
92 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
93 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
94 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
95 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
96 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
97 { CODEC_ID_MPEG1VIDEO, 0x10000001 },
98 { CODEC_ID_MPEG2VIDEO, 0x10000002 },
99 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
e5f0be5a 100 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
9d9f4119
MR
101 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
102 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
103 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
104 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
fc1f90d4 105 { CODEC_ID_JPEGLS,MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
9d9f4119 106 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
140fba09 107 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
bad0cefb 108 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
beef9ba9 109 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
9d9f4119
MR
110 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
111 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
112 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
af5ba08e 113 { CODEC_ID_RAWVIDEO, 0 },
9d9f4119
MR
114 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
115 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
116 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
0b23d689 117 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
9d9f4119
MR
118 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
119 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
3c619838 120 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
32bbb99d 121 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
9d9f4119
MR
122 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
123 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
124 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
125 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
5ce117c3 126 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
9110a0e3
AJ
127 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
128 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
5ce117c3 129 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
9d9f4119
MR
130 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
131 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
132 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
133 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
134 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
135 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
136 { CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },
137 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
138 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
139 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
140 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
141 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
142 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
143 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
144 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
145 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
146 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
147 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
148 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
149 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
150 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
aa8f4cee 151 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
9d9f4119
MR
152 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
153 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
154 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
155 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
156 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
157 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
158 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
159 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
04ae12e9 160 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
91aeec1b 161 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
9d9f4119
MR
162 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
163 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
164 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
165 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
166 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
167 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
168 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
169 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
170 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
171 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
67630cff 172 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
f31065f6 173 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
eb57c889 174 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
2c0c00cb 175 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
9d9f4119
MR
176 { CODEC_ID_NONE, 0 },
177};
178
7caf0cc6 179const AVCodecTag codec_wav_tags[] = {
7bb8d51c 180 { CODEC_ID_WMAVOICE, 0xA },
9d9f4119
MR
181 { CODEC_ID_MP2, 0x50 },
182 { CODEC_ID_MP3, 0x55 },
183 { CODEC_ID_AC3, 0x2000 },
184 { CODEC_ID_DTS, 0x2001 },
185 { CODEC_ID_PCM_S16LE, 0x01 },
186 { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
187 { CODEC_ID_PCM_S24LE, 0x01 },
188 { CODEC_ID_PCM_S32LE, 0x01 },
189 { CODEC_ID_PCM_ALAW, 0x06 },
190 { CODEC_ID_PCM_MULAW, 0x07 },
191 { CODEC_ID_ADPCM_MS, 0x02 },
192 { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
193 { CODEC_ID_ADPCM_YAMAHA, 0x20 },
194 { CODEC_ID_ADPCM_G726, 0x45 },
195 { CODEC_ID_ADPCM_IMA_DK4, 0x61 }, /* rogue format number */
196 { CODEC_ID_ADPCM_IMA_DK3, 0x62 }, /* rogue format number */
197 { CODEC_ID_WMAV1, 0x160 },
198 { CODEC_ID_WMAV2, 0x161 },
7bb8d51c 199 { CODEC_ID_WMAPRO, 0x162 },
9d9f4119 200 { CODEC_ID_AAC, 0x706d },
cbee7a69 201 { CODEC_ID_AAC, 0xff },
9d9f4119
MR
202 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
203 { CODEC_ID_SONIC, 0x2048 },
204 { CODEC_ID_SONIC_LS, 0x2048 },
205 { CODEC_ID_ADPCM_CT, 0x200 },
206 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
207 { CODEC_ID_TRUESPEECH, 0x22 },
39051d5d 208 { CODEC_ID_FLAC, 0xF1AC },
84ed36da 209 { CODEC_ID_IMC, 0x401 },
346a655d 210 { CODEC_ID_GSM_MS, 0x31 },
10e26bc7 211 { CODEC_ID_ATRAC3, 0x270 },
8950f828 212 { CODEC_ID_VOXWARE, 0x75 },
6ae177aa
DB
213
214 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
9d9f4119
MR
215 // for NuppelVideo (nuv.c)
216 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
217 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
7b24f9b4 218 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
9d9f4119
MR
219 { 0, 0 },
220};
221
9d9f4119
MR
222#ifdef CONFIG_MUXERS
223offset_t start_tag(ByteIOContext *pb, const char *tag)
224{
225 put_tag(pb, tag);
226 put_le32(pb, 0);
227 return url_ftell(pb);
228}
229
230void end_tag(ByteIOContext *pb, offset_t start)
231{
232 offset_t pos;
233
234 pos = url_ftell(pb);
235 url_fseek(pb, start - 4, SEEK_SET);
236 put_le32(pb, (uint32_t)(pos - start));
237 url_fseek(pb, pos, SEEK_SET);
238}
239
240/* WAVEFORMATEX header */
241/* returns the size or -1 on error */
242int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
243{
244 int bps, blkalign, bytespersec;
245 int hdrsize = 18;
246
247 if(!enc->codec_tag || enc->codec_tag > 0xffff)
9d9f4119
MR
248 return -1;
249
250 put_le16(pb, enc->codec_tag);
251 put_le16(pb, enc->channels);
252 put_le32(pb, enc->sample_rate);
253 if (enc->codec_id == CODEC_ID_PCM_U8 ||
254 enc->codec_id == CODEC_ID_PCM_ALAW ||
255 enc->codec_id == CODEC_ID_PCM_MULAW) {
256 bps = 8;
346a655d 257 } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
9d9f4119
MR
258 bps = 0;
259 } 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) { //
260 bps = 4;
261 } else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
262 bps = 24;
263 } else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
264 bps = 32;
265 } else {
266 bps = 16;
267 }
0a3692cd 268 if(bps != enc->bits_per_sample && enc->bits_per_sample){
9376710d
MN
269 av_log(enc, AV_LOG_WARNING, "requested bits_per_sample (%d) and actually stored (%d) differ\n", enc->bits_per_sample, bps);
270 }
9d9f4119 271
346a655d 272 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
755bfeab 273 blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
9d9f4119
MR
274 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
275 } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
276 blkalign = 1;
277 } else if (enc->block_align != 0) { /* specified by the codec */
278 blkalign = enc->block_align;
279 } else
280 blkalign = enc->channels*bps >> 3;
281 if (enc->codec_id == CODEC_ID_PCM_U8 ||
282 enc->codec_id == CODEC_ID_PCM_S24LE ||
283 enc->codec_id == CODEC_ID_PCM_S32LE ||
284 enc->codec_id == CODEC_ID_PCM_S16LE) {
285 bytespersec = enc->sample_rate * blkalign;
286 } else {
287 bytespersec = enc->bit_rate / 8;
288 }
289 put_le32(pb, bytespersec); /* bytes per second */
290 put_le16(pb, blkalign); /* block align */
291 put_le16(pb, bps); /* bits per sample */
292 if (enc->codec_id == CODEC_ID_MP3) {
293 put_le16(pb, 12); /* wav_extra_size */
294 hdrsize += 12;
295 put_le16(pb, 1); /* wID */
296 put_le32(pb, 2); /* fdwFlags */
297 put_le16(pb, 1152); /* nBlockSize */
298 put_le16(pb, 1); /* nFramesPerBlock */
299 put_le16(pb, 1393); /* nCodecDelay */
300 } else if (enc->codec_id == CODEC_ID_MP2) {
301 put_le16(pb, 22); /* wav_extra_size */
302 hdrsize += 22;
303 put_le16(pb, 2); /* fwHeadLayer */
304 put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
305 put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
306 put_le16(pb, 0); /* fwHeadModeExt */
307 put_le16(pb, 1); /* wHeadEmphasis */
308 put_le16(pb, 16); /* fwHeadFlags */
309 put_le32(pb, 0); /* dwPTSLow */
310 put_le32(pb, 0); /* dwPTSHigh */
346a655d
MB
311 } else if (enc->codec_id == CODEC_ID_GSM_MS) {
312 put_le16(pb, 2); /* wav_extra_size */
313 hdrsize += 2;
314 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
9d9f4119
MR
315 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
316 put_le16(pb, 2); /* wav_extra_size */
317 hdrsize += 2;
5b77a81a 318 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
9d9f4119
MR
319 } else if(enc->extradata_size){
320 put_le16(pb, enc->extradata_size);
321 put_buffer(pb, enc->extradata, enc->extradata_size);
322 hdrsize += enc->extradata_size;
323 if(hdrsize&1){
324 hdrsize++;
325 put_byte(pb, 0);
326 }
327 } else {
328 hdrsize -= 2;
329 }
330
331 return hdrsize;
332}
333
334/* BITMAPINFOHEADER header */
7caf0cc6 335void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
9d9f4119
MR
336{
337 put_le32(pb, 40 + enc->extradata_size); /* size */
338 put_le32(pb, enc->width);
339 put_le32(pb, enc->height);
340 put_le16(pb, 1); /* planes */
341
342 put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
343 /* compression type */
bb85077f 344 put_le32(pb, enc->codec_tag);
9d9f4119
MR
345 put_le32(pb, enc->width * enc->height * 3);
346 put_le32(pb, 0);
347 put_le32(pb, 0);
348 put_le32(pb, 0);
349 put_le32(pb, 0);
350
351 put_buffer(pb, enc->extradata, enc->extradata_size);
352
353 if (enc->extradata_size & 1)
354 put_byte(pb, 0);
355}
356#endif //CONFIG_MUXERS
357
358#ifdef CONFIG_DEMUXERS
359/* We could be given one of the three possible structures here:
360 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
361 * is an expansion of the previous one with the fields added
362 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
363 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
364 * an openended structure.
365 */
366void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
367{
368 int id;
369
370 id = get_le16(pb);
371 codec->codec_type = CODEC_TYPE_AUDIO;
372 codec->codec_tag = id;
373 codec->channels = get_le16(pb);
374 codec->sample_rate = get_le32(pb);
375 codec->bit_rate = get_le32(pb) * 8;
376 codec->block_align = get_le16(pb);
377 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
378 codec->bits_per_sample = 8;
379 }else
380 codec->bits_per_sample = get_le16(pb);
72fd40bd
BC
381 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
382 int cbSize = get_le16(pb); /* cbSize */
383 size -= 18;
384 cbSize = FFMIN(size, cbSize);
385 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
386 codec->bits_per_sample = get_le16(pb);
387 get_le32(pb); /* dwChannelMask */
388 id = get_le32(pb); /* 4 first bytes of GUID */
389 url_fskip(pb, 12); /* skip end of GUID */
390 cbSize -= 22;
391 size -= 22;
392 }
393 codec->extradata_size = cbSize;
394 if (cbSize > 0) {
9d9f4119
MR
395 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
396 get_buffer(pb, codec->extradata, codec->extradata_size);
72fd40bd
BC
397 size -= cbSize;
398 }
9d9f4119
MR
399
400 /* It is possible for the chunk to contain garbage at the end */
72fd40bd
BC
401 if (size > 0)
402 url_fskip(pb, size);
9d9f4119 403 }
72fd40bd 404 codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
9d9f4119
MR
405}
406
407
408int wav_codec_get_id(unsigned int tag, int bps)
409{
410 int id;
411 id = codec_get_id(codec_wav_tags, tag);
412 if (id <= 0)
413 return id;
414 /* handle specific u8 codec */
415 if (id == CODEC_ID_PCM_S16LE && bps == 8)
416 id = CODEC_ID_PCM_U8;
417 if (id == CODEC_ID_PCM_S16LE && bps == 24)
418 id = CODEC_ID_PCM_S24LE;
419 if (id == CODEC_ID_PCM_S16LE && bps == 32)
420 id = CODEC_ID_PCM_S32LE;
a11c2a2c
MN
421 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
422 id = CODEC_ID_PCM_ZORK;
9d9f4119
MR
423 return id;
424}
425#endif // CONFIG_DEMUXERS
426
427void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
428{
429 int gcd;
430
431 *au_ssize= stream->block_align;
432 if(stream->frame_size && stream->sample_rate){
433 *au_scale=stream->frame_size;
434 *au_rate= stream->sample_rate;
435 }else if(stream->codec_type == CODEC_TYPE_VIDEO){
436 *au_scale= stream->time_base.num;
437 *au_rate = stream->time_base.den;
438 }else{
439 *au_scale= stream->block_align ? stream->block_align*8 : 8;
440 *au_rate = stream->bit_rate;
441 }
442 gcd= ff_gcd(*au_scale, *au_rate);
443 *au_scale /= gcd;
444 *au_rate /= gcd;
445}