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cljr: add encoder
[libav.git] / libavformat / riff.c
CommitLineData
9d9f4119
MR		 1/*
2 * RIFF codec tags
406792e7 3 * Copyright (c) 2000 Fabrice Bellard
9d9f4119 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav 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 *
2912e87a 12 * Libav 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
2912e87a 18 * License along with Libav; if not, write to the Free Software
9d9f4119
MR		 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
0ebcdf5c 22#include "libavutil/mathematics.h"
245976da 23#include "libavcodec/avcodec.h"
9d9f4119 24#include "avformat.h"
0abdb293 25#include "avio_internal.h"
9d9f4119 26#include "riff.h"
6e9f56c1 27#include "libavcodec/bytestream.h"
9d9f4119
MR		 28
29/* Note: when encoding, the first matching tag is used, so order is
30 important if multiple tags possible for a given codec. */
1a40491e 31const AVCodecTag ff_codec_bmp_tags[] = {
ab0b2e55
AJ		 32 { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
33 { CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
34 { CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
35 { CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
36 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
2ea1ca17 37 { CODEC_ID_H264, MKTAG('D', 'A', 'V', 'C') },
ab0b2e55 38 { CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
ab0b2e55 39 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
26e8d342 40 { CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
d7c6552c 41 { CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
26e8d342 42 { CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
62d6f73e 43 { CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
5aef8462 44 { CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
682a2011 45 { CODEC_ID_H263, MKTAG('M', '2', '6', '3') },
ab0b2e55
AJ		 46 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
47 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
48 { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
ab0b2e55
AJ		 49 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
50 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
ab0b2e55
AJ		 51 { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
52 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
53 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
54 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
55 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
56 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
36b0782e 57 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
ab0b2e55
AJ		 58 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
59 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
60 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
61 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
62 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
63 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
ab0b2e55 64 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
1b46683c 65 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
f0feb4d7 66 { CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
26ae363e 67 { CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
4a49a5fd 68 { CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
26e8d342
BL		 69 { CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
70 { CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
71 { CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
72 { CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
73 { CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
74 { CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
75 { CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
b8cf645b 76 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
26e8d342 77 { CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
62d6f73e 78 { CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
41b0534a 79 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
4a49a5fd 80 { CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
5823e4b8 81 { CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
76af2edc 82 { CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
52837498 83 { CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
3596f4e0 84 { CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
6667d5a5 85 { CODEC_ID_MPEG4, MKTAG('V', 'S', 'P', 'X') },
5bc3fc21 86 { CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
86d58bcf 87 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
74c853b6 88 { CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
682a2011 89 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'X') },
12bd8532 90 { CODEC_ID_MPEG4, MKTAG('D', 'r', 'e', 'X') },
ab0b2e55 91 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
2d91366c 92 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
ab0b2e55
AJ		 93 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
94 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
95 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
96 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
4a49a5fd 97 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
ab0b2e55
AJ		 98 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
99 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
100 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
ab0b2e55 101 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
ab0b2e55 102 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
ab0b2e55 103 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
26e8d342 104 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
ab0b2e55 105 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
ab0b2e55
AJ		 106 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
107 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
108 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
f9928b7e 109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
ab0b2e55
AJ		 110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
111 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
112 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
113 { CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
13b47b40 114 { CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
682a2011 115 { CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') }, /* Canopus DV */
26e8d342 116 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
4bae2251 117 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 's') },
c20a305b 118 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
ab0b2e55
AJ		 119 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
120 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
121 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
122 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
123 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
26e8d342 124 { CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
ab0b2e55 125 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
36b0782e
AJ		 126 { CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
127 { CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
bc7ea1e5 128 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
ab0b2e55
AJ		 129 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
130 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
6cffaea8 131 { CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
483aad71 132 { CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
f63e5a74 133 { CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
77d3f1f7 134 { CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
505345ed 135 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', 'v') },
ab0b2e55
AJ		 136 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
137 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
26e8d342 138 { CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
94ec3aca 139 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') },
ab0b2e55
AJ		 140 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
141 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
142 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
f10d3d34 143 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
ab0b2e55
AJ		 144 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
145 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
146 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
147 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
65fec2d9 148 { CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
a9cf309b 149 { CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
ed0879ed 150 { CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
54f8abde 151 { CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
54089ecd 152 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
dd9d5a1e 153 { CODEC_ID_MJPEG, MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
4b86926b
CEH		 154 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '1') },
155 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '2') },
ab176fdf 156 { CODEC_ID_MJPEG, MKTAG('M', 'T', 'S', 'J') },
418a287c 157 { CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
682a2011 158 { CODEC_ID_MJPEG, MKTAG('M', 'M', 'J', 'P') },
ab0b2e55
AJ		 159 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
160 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
161 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
36b0782e 162 { CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
fc3fc029 163 { CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
ab0b2e55
AJ		 164 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
165 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
166 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
9853bbb2
BL		 167 { CODEC_ID_RAWVIDEO, MKTAG('V', '4', '2', '2') },
168 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'N', 'V') },
169 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'V') },
170 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'Y') },
171 { CODEC_ID_RAWVIDEO, MKTAG('u', 'y', 'v', '1') },
172 { CODEC_ID_RAWVIDEO, MKTAG('2', 'V', 'u', '1') },
13547dd1 173 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') },
3d305fd0 174 { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') },
9853bbb2 175 { CODEC_ID_RAWVIDEO, MKTAG('P', '4', '2', '2') },
ab0b2e55 176 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
12bd8532
DB		 177 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '6') },
178 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '2', '4') },
ab0b2e55 179 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
e47ca4f7 180 { CODEC_ID_RAWVIDEO, MKTAG('V', 'Y', 'U', 'Y') },
ab0b2e55
AJ		 181 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
182 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
12bd8532 183 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', ' ', ' ') },
ab0b2e55 184 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
71b0654c 185 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
8be7ac98 186 { CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
b43f432c 187 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', '1') },
73762de1
SS		 188 { CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '1', '2') },
189 { CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '2', '1') },
781cf5fd
SS		 190 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', 'B') },
191 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', 'B') },
192 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'V', '9') },
193 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
d352df09 194 { CODEC_ID_RAWVIDEO, MKTAG('a', 'u', 'v', '2') },
d8b35b85 195 { CODEC_ID_FRWU, MKTAG('F', 'R', 'W', 'U') },
43836928 196 { CODEC_ID_R10K, MKTAG('R', '1', '0', 'k') },
4aaab0a3 197 { CODEC_ID_R210, MKTAG('r', '2', '1', '0') },
9c4e266c 198 { CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
ab0b2e55
AJ		 199 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
200 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
201 { CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
202 { CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
203 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
204 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
205 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
206 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
207 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
208 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
337104ac 209 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
03cb8458 210 { CODEC_ID_VP6F, MKTAG('F', 'L', 'V', '4') },
6c7c6293 211 { CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
ab0b2e55
AJ		 212 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
213 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
214 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
215 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
216 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
e2260faa 217 { CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
ab0b2e55 218 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
36b0782e 219 { CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
b30cb420 220 { CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
ab0b2e55
AJ		 221 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
222 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
223 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
224 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
225 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
226 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
227 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
228 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
bf23f6dc 229 { CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
ab0b2e55
AJ		 230 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
231 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
232 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
233 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
234 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
235 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
ab0b2e55
AJ		 236 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
237 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
238 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
239 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
240 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
241 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
242 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
243 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
45ecda85 244 { CODEC_ID_WMV3IMAGE, MKTAG('W', 'M', 'V', 'P') },
ab0b2e55
AJ		 245 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
246 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
45ecda85 247 { CODEC_ID_VC1IMAGE, MKTAG('W', 'V', 'P', '2') },
ab0b2e55
AJ		 248 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
249 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
250 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
251 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
252 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
253 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
254 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
255 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
256 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
257 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
258 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
a304a833 259 { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') },
ab0b2e55 260 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
12bd8532
DB		 261 { CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'C') },
262 { CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'K') },
ab0b2e55
AJ		 263 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
264 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
f86cd761 265 { CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
0dccbba0 266 { CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
e93947b7 267 { CODEC_ID_CLJR, MKTAG('C', 'L', 'J', 'R') },
eb64714c 268 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
65fec2d9 269 { CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
c6340f86
BL		 270 { CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
271 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
e80c73b3 272 { CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
c21fbefb
KS		 273 { CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
274 { CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
94d3d6a4 275 { CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
bf354122 276 { CODEC_ID_KGV1, MKTAG('K', 'G', 'V', '1') },
d267b339 277 { CODEC_ID_LAGARITH, MKTAG('L', 'A', 'G', 'S') },
0d8506b8
KS		 278 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'A') },
279 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'G') },
280 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '0') },
281 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '2') },
c433a3f9 282 { CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
ab0b2e55 283 { CODEC_ID_NONE, 0 }
9d9f4119
MR		 284};
285
1a40491e 286const AVCodecTag ff_codec_wav_tags[] = {
8af9090f
DB		 287 { CODEC_ID_PCM_S16LE, 0x0001 },
288 { CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
289 { CODEC_ID_PCM_S24LE, 0x0001 },
290 { CODEC_ID_PCM_S32LE, 0x0001 },
291 { CODEC_ID_ADPCM_MS, 0x0002 },
57406d8e
PR		 292 { CODEC_ID_PCM_F32LE, 0x0003 },
293 { CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
8af9090f
DB		 294 { CODEC_ID_PCM_ALAW, 0x0006 },
295 { CODEC_ID_PCM_MULAW, 0x0007 },
296 { CODEC_ID_WMAVOICE, 0x000A },
297 { CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
4e0e6888 298 { CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
8af9090f
DB		 299 { CODEC_ID_ADPCM_YAMAHA, 0x0020 },
300 { CODEC_ID_TRUESPEECH, 0x0022 },
301 { CODEC_ID_GSM_MS, 0x0031 },
302 { CODEC_ID_ADPCM_G726, 0x0045 },
303 { CODEC_ID_MP2, 0x0050 },
304 { CODEC_ID_MP3, 0x0055 },
c26436ec
BL		 305 { CODEC_ID_AMR_NB, 0x0057 },
306 { CODEC_ID_AMR_WB, 0x0058 },
8af9090f
DB		 307 { CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
308 { CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
4becee23 309 { CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
8af9090f
DB		 310 { CODEC_ID_VOXWARE, 0x0075 },
311 { CODEC_ID_AAC, 0x00ff },
faeedbbb 312 { CODEC_ID_SIPR, 0x0130 },
8af9090f
DB		 313 { CODEC_ID_WMAV1, 0x0160 },
314 { CODEC_ID_WMAV2, 0x0161 },
315 { CODEC_ID_WMAPRO, 0x0162 },
800b9c24 316 { CODEC_ID_WMALOSSLESS, 0x0163 },
8af9090f
DB		 317 { CODEC_ID_ADPCM_CT, 0x0200 },
318 { CODEC_ID_ATRAC3, 0x0270 },
e8ffb2fa 319 { CODEC_ID_ADPCM_G722, 0x028F },
8af9090f 320 { CODEC_ID_IMC, 0x0401 },
4bf2b9e8
BL		 321 { CODEC_ID_GSM_MS, 0x1500 },
322 { CODEC_ID_TRUESPEECH, 0x1501 },
d34ca1cf 323 { CODEC_ID_AAC, 0x1600 }, /* ADTS AAC */
50d83b20 324 { CODEC_ID_AAC_LATM, 0x1602 },
8af9090f
DB		 325 { CODEC_ID_AC3, 0x2000 },
326 { CODEC_ID_DTS, 0x2001 },
327 { CODEC_ID_SONIC, 0x2048 },
328 { CODEC_ID_SONIC_LS, 0x2048 },
8e6e9bac 329 { CODEC_ID_PCM_MULAW, 0x6c75 },
8af9090f 330 { CODEC_ID_AAC, 0x706d },
6cffaea8 331 { CODEC_ID_AAC, 0x4143 },
12bd8532 332 { CODEC_ID_SPEEX, 0xA109 },
8af9090f
DB		 333 { CODEC_ID_FLAC, 0xF1AC },
334 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
335 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
6ae177aa
DB		 336
337 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
9d9f4119
MR		 338 // for NuppelVideo (nuv.c)
339 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
8af9090f
DB		 340 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
341 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
bc2d2a07 342 { CODEC_ID_NONE, 0 },
9d9f4119
MR		 343};
344
12bc2050
VV		 345const AVMetadataConv ff_riff_info_conv[] = {
346 { "IART", "artist" },
347 { "ICMT", "comment" },
348 { "ICOP", "copyright" },
349 { "ICRD", "date" },
350 { "IGNR", "genre" },
351 { "ILNG", "language" },
352 { "INAM", "title" },
353 { "IPRD", "album" },
354 { "IPRT", "track" },
355 { "ISFT", "encoder" },
356 { "ITCH", "encoded_by"},
357 { 0 },
358};
359
360const char ff_riff_tags[][5] = {
361 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
362 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
363 "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
364 {0}
365};
366
b250f9c6 367#if CONFIG_MUXERS
ae628ec1 368int64_t ff_start_tag(AVIOContext *pb, const char *tag)
9d9f4119 369{
0abdb293 370 ffio_wfourcc(pb, tag);
77eb5504 371 avio_wl32(pb, 0);
a2704c97 372 return avio_tell(pb);
9d9f4119
MR		 373}
374
ae628ec1 375void ff_end_tag(AVIOContext *pb, int64_t start)
9d9f4119 376{
bc5c918e 377 int64_t pos;
9d9f4119 378
a2704c97 379 pos = avio_tell(pb);
6b4aa5da 380 avio_seek(pb, start - 4, SEEK_SET);
77eb5504 381 avio_wl32(pb, (uint32_t)(pos - start));
6b4aa5da 382 avio_seek(pb, pos, SEEK_SET);
9d9f4119
MR		 383}
384
385/* WAVEFORMATEX header */
386/* returns the size or -1 on error */
ae628ec1 387int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
9d9f4119
MR		 388{
389 int bps, blkalign, bytespersec;
390 int hdrsize = 18;
6e9f56c1
RB		 391 int waveformatextensible;
392 uint8_t temp[256];
393 uint8_t *riff_extradata= temp;
394 uint8_t *riff_extradata_start= temp;
9d9f4119
MR		 395
396 if(!enc->codec_tag || enc->codec_tag > 0xffff)
9d9f4119 397 return -1;
2c2a167c
MN		 398 waveformatextensible = (enc->channels > 2 && enc->channel_layout)
399 || enc->sample_rate > 48000
400 || av_get_bits_per_sample(enc->codec_id) > 16;
9d9f4119 401
6e9f56c1 402 if (waveformatextensible) {
77eb5504 403 avio_wl16(pb, 0xfffe);
6e9f56c1 404 } else {
77eb5504 405 avio_wl16(pb, enc->codec_tag);
6e9f56c1 406 }
77eb5504
AK		 407 avio_wl16(pb, enc->channels);
408 avio_wl32(pb, enc->sample_rate);
235a51ad 409 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
9d9f4119 410 bps = 0;
9d9f4119 411 } else {
6ac34eed
JR		 412 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
413 if (enc->bits_per_coded_sample)
414 bps = enc->bits_per_coded_sample;
415 else
416 bps = 16; // default to 16
417 }
9d9f4119 418 }
dd1c8f3e
LA		 419 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
420 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 421 }
9d9f4119 422
504530bf 423 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
755bfeab 424 blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
9d9f4119 425 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
504530bf
CEH		 426 } else if (enc->codec_id == CODEC_ID_AC3) {
427 blkalign = 3840; //maximum bytes per frame
9d9f4119
MR		 428 } else if (enc->block_align != 0) { /* specified by the codec */
429 blkalign = enc->block_align;
430 } else
6ac34eed 431 blkalign = bps * enc->channels / av_gcd(8, bps);
9d9f4119
MR		 432 if (enc->codec_id == CODEC_ID_PCM_U8 ||
433 enc->codec_id == CODEC_ID_PCM_S24LE ||
434 enc->codec_id == CODEC_ID_PCM_S32LE ||
57406d8e
PR		 435 enc->codec_id == CODEC_ID_PCM_F32LE ||
436 enc->codec_id == CODEC_ID_PCM_F64LE ||
9d9f4119
MR		 437 enc->codec_id == CODEC_ID_PCM_S16LE) {
438 bytespersec = enc->sample_rate * blkalign;
439 } else {
440 bytespersec = enc->bit_rate / 8;
441 }
77eb5504
AK		 442 avio_wl32(pb, bytespersec); /* bytes per second */
443 avio_wl16(pb, blkalign); /* block align */
444 avio_wl16(pb, bps); /* bits per sample */
9d9f4119 445 if (enc->codec_id == CODEC_ID_MP3) {
9d9f4119 446 hdrsize += 12;
6e9f56c1
RB		 447 bytestream_put_le16(&riff_extradata, 1); /* wID */
448 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
449 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
450 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
451 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
9d9f4119 452 } else if (enc->codec_id == CODEC_ID_MP2) {
9d9f4119 453 hdrsize += 22;
6e9f56c1
RB		 454 bytestream_put_le16(&riff_extradata, 2); /* fwHeadLayer */
455 bytestream_put_le32(&riff_extradata, enc->bit_rate); /* dwHeadBitrate */
456 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
457 bytestream_put_le16(&riff_extradata, 0); /* fwHeadModeExt */
458 bytestream_put_le16(&riff_extradata, 1); /* wHeadEmphasis */
459 bytestream_put_le16(&riff_extradata, 16); /* fwHeadFlags */
460 bytestream_put_le32(&riff_extradata, 0); /* dwPTSLow */
461 bytestream_put_le32(&riff_extradata, 0); /* dwPTSHigh */
c81604f8 462 } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
9d9f4119 463 hdrsize += 2;
6e9f56c1 464 bytestream_put_le16(&riff_extradata, enc->frame_size); /* wSamplesPerBlock */
9d9f4119 465 } else if(enc->extradata_size){
6e9f56c1
RB		 466 riff_extradata_start= enc->extradata;
467 riff_extradata= enc->extradata + enc->extradata_size;
9d9f4119 468 hdrsize += enc->extradata_size;
6e9f56c1
RB		 469 }
470 if(waveformatextensible) { /* write WAVEFORMATEXTENSIBLE extensions */
471 hdrsize += 22;
77eb5504
AK		 472 avio_wl16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
473 avio_wl16(pb, enc->bits_per_coded_sample); /* ValidBitsPerSample || SamplesPerBlock || Reserved */
474 avio_wl32(pb, enc->channel_layout); /* dwChannelMask */
475 avio_wl32(pb, enc->codec_tag); /* GUID + next 3 */
476 avio_wl32(pb, 0x00100000);
477 avio_wl32(pb, 0xAA000080);
478 avio_wl32(pb, 0x719B3800);
2c4e08d8
JB		 479 } else {
480 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
6e9f56c1 481 }
77eb5504 482 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
4bce3ba4
RB		 483 if(hdrsize&1){
484 hdrsize++;
77eb5504 485 avio_w8(pb, 0);
4bce3ba4 486 }
9d9f4119
MR		 487
488 return hdrsize;
489}
490
491/* BITMAPINFOHEADER header */
ae628ec1 492void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
9d9f4119 493{
77eb5504
AK		 494 avio_wl32(pb, 40 + enc->extradata_size); /* size */
495 avio_wl32(pb, enc->width);
31f2616d 496 //We always store RGB TopDown
77eb5504
AK		 497 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
498 avio_wl16(pb, 1); /* planes */
9d9f4119 499
77eb5504 500 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
9d9f4119 501 /* compression type */
77eb5504
AK		 502 avio_wl32(pb, enc->codec_tag);
503 avio_wl32(pb, enc->width * enc->height * 3);
504 avio_wl32(pb, 0);
505 avio_wl32(pb, 0);
506 avio_wl32(pb, 0);
507 avio_wl32(pb, 0);
9d9f4119 508
77eb5504 509 avio_write(pb, enc->extradata, enc->extradata_size);
9d9f4119 510
63100f58 511 if (!for_asf && enc->extradata_size & 1)
77eb5504 512 avio_w8(pb, 0);
9d9f4119
MR		 513}
514#endif //CONFIG_MUXERS
515
b250f9c6 516#if CONFIG_DEMUXERS
9d9f4119
MR		 517/* We could be given one of the three possible structures here:
518 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
519 * is an expansion of the previous one with the fields added
520 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
521 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
522 * an openended structure.
523 */
ca402f32 524int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
9d9f4119
MR		 525{
526 int id;
527
b7effd4e 528 id = avio_rl16(pb);
72415b2a 529 codec->codec_type = AVMEDIA_TYPE_AUDIO;
9d9f4119 530 codec->codec_tag = id;
b7effd4e
AK		 531 codec->channels = avio_rl16(pb);
532 codec->sample_rate = avio_rl32(pb);
533 codec->bit_rate = avio_rl32(pb) * 8;
534 codec->block_align = avio_rl16(pb);
9d9f4119 535 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
dd1c8f3e 536 codec->bits_per_coded_sample = 8;
9d9f4119 537 }else
b7effd4e 538 codec->bits_per_coded_sample = avio_rl16(pb);
72fd40bd 539 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
b7effd4e 540 int cbSize = avio_rl16(pb); /* cbSize */
72fd40bd
BC		 541 size -= 18;
542 cbSize = FFMIN(size, cbSize);
543 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
b7effd4e
AK		 544 codec->bits_per_coded_sample = avio_rl16(pb);
545 codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
546 id = avio_rl32(pb); /* 4 first bytes of GUID */
45a8a02a 547 avio_skip(pb, 12); /* skip end of GUID */
72fd40bd
BC		 548 cbSize -= 22;
549 size -= 22;
550 }
551 codec->extradata_size = cbSize;
552 if (cbSize > 0) {
ed8a5006 553 av_free(codec->extradata);
9d9f4119 554 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
ca402f32
MH		 555 if (!codec->extradata)
556 return AVERROR(ENOMEM);
b7effd4e 557 avio_read(pb, codec->extradata, codec->extradata_size);
72fd40bd
BC		 558 size -= cbSize;
559 }
9d9f4119
MR		 560
561 /* It is possible for the chunk to contain garbage at the end */
72fd40bd 562 if (size > 0)
45a8a02a 563 avio_skip(pb, size);
9d9f4119 564 }
1a40491e 565 codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
50d83b20
PR		 566 if (codec->codec_id == CODEC_ID_AAC_LATM) {
567 /* channels and sample_rate values are those prior to applying SBR and/or PS */
568 codec->channels = 0;
569 codec->sample_rate = 0;
570 }
6ac34eed
JR		 571 /* override bits_per_coded_sample for G.726 */
572 if (codec->codec_id == CODEC_ID_ADPCM_G726)
573 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
ca402f32
MH		 574
575 return 0;
9d9f4119
MR		 576}
577
578
1a40491e 579enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps)
9d9f4119 580{
9f2ace74 581 enum CodecID id;
1a40491e 582 id = ff_codec_get_id(ff_codec_wav_tags, tag);
9d9f4119
MR		 583 if (id <= 0)
584 return id;
585 /* handle specific u8 codec */
586 if (id == CODEC_ID_PCM_S16LE && bps == 8)
587 id = CODEC_ID_PCM_U8;
588 if (id == CODEC_ID_PCM_S16LE && bps == 24)
589 id = CODEC_ID_PCM_S24LE;
590 if (id == CODEC_ID_PCM_S16LE && bps == 32)
591 id = CODEC_ID_PCM_S32LE;
57406d8e
PR		 592 if (id == CODEC_ID_PCM_F32LE && bps == 64)
593 id = CODEC_ID_PCM_F64LE;
a11c2a2c
MN		 594 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
595 id = CODEC_ID_PCM_ZORK;
9d9f4119
MR		 596 return id;
597}
773d892a 598
ae628ec1 599int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
773d892a
PR		 600{
601 int tag1;
b7effd4e
AK		 602 avio_rl32(pb); /* size */
603 st->codec->width = avio_rl32(pb);
604 st->codec->height = (int32_t)avio_rl32(pb);
605 avio_rl16(pb); /* planes */
606 st->codec->bits_per_coded_sample= avio_rl16(pb); /* depth */
607 tag1 = avio_rl32(pb);
608 avio_rl32(pb); /* ImageSize */
609 avio_rl32(pb); /* XPelsPerMeter */
610 avio_rl32(pb); /* YPelsPerMeter */
611 avio_rl32(pb); /* ClrUsed */
612 avio_rl32(pb); /* ClrImportant */
773d892a
PR		 613 return tag1;
614}
9d9f4119
MR		 615#endif // CONFIG_DEMUXERS
616
617void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
618{
619 int gcd;
620
621 *au_ssize= stream->block_align;
622 if(stream->frame_size && stream->sample_rate){
623 *au_scale=stream->frame_size;
624 *au_rate= stream->sample_rate;
72415b2a 625 }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
e3b540b4 626 stream->codec_type == AVMEDIA_TYPE_DATA ||
72415b2a 627 stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
9d9f4119
MR		 628 *au_scale= stream->time_base.num;
629 *au_rate = stream->time_base.den;
630 }else{
631 *au_scale= stream->block_align ? stream->block_align*8 : 8;
a7805e29 632 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
9d9f4119 633 }
9ce6c138 634 gcd= av_gcd(*au_scale, *au_rate);
9d9f4119
MR		 635 *au_scale /= gcd;
636 *au_rate /= gcd;
637}
12bc2050
VV		 638
639int ff_read_riff_info(AVFormatContext *s, int64_t size)
640{
641 int64_t start, end, cur;
642 AVIOContext *pb = s->pb;
643
644 start = avio_tell(pb);
645 end = start + size;
646
647 while ((cur = avio_tell(pb)) >= 0 && cur <= end - 8 /* = tag + size */) {
648 uint32_t chunk_code;
649 int64_t chunk_size;
650 char key[5] = {0};
651 char *value;
652
653 chunk_code = avio_rl32(pb);
654 chunk_size = avio_rl32(pb);
655 if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
656 av_log(s, AV_LOG_ERROR, "too big INFO subchunk\n");
657 return AVERROR_INVALIDDATA;
658 }
659
660 chunk_size += (chunk_size & 1);
661
662 value = av_malloc(chunk_size + 1);
663 if (!value) {
664 av_log(s, AV_LOG_ERROR, "out of memory, unable to read INFO tag\n");
665 return AVERROR(ENOMEM);
666 }
667
668 AV_WL32(key, chunk_code);
669
670 if (avio_read(pb, value, chunk_size) != chunk_size) {
671 av_freep(key);
672 av_freep(value);
673 av_log(s, AV_LOG_ERROR, "premature end of file while reading INFO tag\n");
674 return AVERROR_INVALIDDATA;
675 }
676
677 value[chunk_size] = 0;
678
679 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
680 }
681
682 return 0;
683}
Libav master