configure: handle --disable-asm before check_deps
[libav.git] / libavformat / riff.c
CommitLineData
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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
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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 *
2912e87a 12 * Libav 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
2912e87a 18 * License along with Libav; 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
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"
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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[] = {
36ef5369
AK
32 { AV_CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
33 { AV_CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
34 { AV_CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
35 { AV_CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
36 { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
37 { AV_CODEC_ID_H264, MKTAG('D', 'A', 'V', 'C') },
38 { AV_CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
39 { AV_CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
40 { AV_CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
41 { AV_CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
42 { AV_CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
43 { AV_CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
44 { AV_CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
45 { AV_CODEC_ID_H263, MKTAG('M', '2', '6', '3') },
46 { AV_CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
47 { AV_CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
48 { AV_CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
49 { AV_CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
50 { AV_CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
51 { AV_CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
52 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
53 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
54 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
55 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
56 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
57 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
58 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
59 { AV_CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
60 { AV_CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
61 { AV_CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
62 { AV_CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
63 { AV_CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
64 { AV_CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
65 { AV_CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
66 { AV_CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
67 { AV_CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
68 { AV_CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
69 { AV_CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
70 { AV_CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
71 { AV_CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
72 { AV_CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
73 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
74 { AV_CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
75 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
76 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
77 { AV_CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
78 { AV_CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
79 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
80 { AV_CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
81 { AV_CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
82 { AV_CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
83 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
84 { AV_CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
85 { AV_CODEC_ID_MPEG4, MKTAG('V', 'S', 'P', 'X') },
86 { AV_CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
87 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
88 { AV_CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
89 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'X') },
90 { AV_CODEC_ID_MPEG4, MKTAG('D', 'r', 'e', 'X') },
91 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
92 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
93 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
94 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
95 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
96 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
97 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
98 { AV_CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
99 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
100 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
101 { AV_CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
102 { AV_CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
103 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
104 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
105 { AV_CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
106 { AV_CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
107 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
108 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
109 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
110 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
111 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
112 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
113 { AV_CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
114 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
115 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') }, /* Canopus DV */
116 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
117 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 's') },
118 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
119 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
120 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
121 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
122 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
123 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
124 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
125 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
126 { AV_CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
127 { AV_CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
128 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
129 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
130 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
131 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
132 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
133 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
134 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
135 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', 'v') },
136 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
137 { AV_CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
138 { AV_CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
139 { AV_CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') },
140 { AV_CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
141 { AV_CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
142 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
143 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
144 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
145 { AV_CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
146 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
147 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
148 { AV_CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
149 { AV_CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
150 { AV_CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
151 { AV_CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
152 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
153 { AV_CODEC_ID_MJPEG, MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
154 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '1') },
155 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '2') },
156 { AV_CODEC_ID_MJPEG, MKTAG('M', 'T', 'S', 'J') },
157 { AV_CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
158 { AV_CODEC_ID_MJPEG, MKTAG('M', 'M', 'J', 'P') },
159 { AV_CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
160 { AV_CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
161 { AV_CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
162 { AV_CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
163 { AV_CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
164 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
165 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
166 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
167 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', '4', '2', '2') },
168 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'N', 'V') },
169 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'V') },
170 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'Y') },
171 { AV_CODEC_ID_RAWVIDEO, MKTAG('u', 'y', 'v', '1') },
172 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'V', 'u', '1') },
173 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') },
174 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') },
175 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') },
176 { AV_CODEC_ID_RAWVIDEO, MKTAG('P', '4', '2', '2') },
177 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
178 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '6') },
179 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '2', '4') },
180 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
181 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'Y', 'U', 'Y') },
182 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
183 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
184 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', ' ', ' ') },
185 { AV_CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
186 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
187 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
188 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', '1') },
189 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '1', '2') },
190 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '2', '1') },
191 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', 'B') },
192 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', 'B') },
193 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'V', '9') },
194 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
195 { AV_CODEC_ID_RAWVIDEO, MKTAG('a', 'u', 'v', '2') },
196 { AV_CODEC_ID_FRWU, MKTAG('F', 'R', 'W', 'U') },
197 { AV_CODEC_ID_R10K, MKTAG('R', '1', '0', 'k') },
198 { AV_CODEC_ID_R210, MKTAG('r', '2', '1', '0') },
199 { AV_CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
200 { AV_CODEC_ID_V410, MKTAG('v', '4', '1', '0') },
201 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
202 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
203 { AV_CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
204 { AV_CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
205 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
206 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
207 { AV_CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
208 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
209 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
210 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
211 { AV_CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
212 { AV_CODEC_ID_VP6F, MKTAG('F', 'L', 'V', '4') },
213 { AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
214 { AV_CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
215 { AV_CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
216 { AV_CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
217 { AV_CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
218 { AV_CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
219 { AV_CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
220 { AV_CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
221 { AV_CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
222 { AV_CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
223 { AV_CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
224 { AV_CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
225 { AV_CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
226 { AV_CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
227 { AV_CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
228 { AV_CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
229 { AV_CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
230 { AV_CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
231 { AV_CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
232 { AV_CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
233 { AV_CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
234 { AV_CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
235 { AV_CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
236 { AV_CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
237 { AV_CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
238 { AV_CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
239 { AV_CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
240 { AV_CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
241 { AV_CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
242 { AV_CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
243 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
244 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
245 { AV_CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
246 { AV_CODEC_ID_WMV3IMAGE, MKTAG('W', 'M', 'V', 'P') },
247 { AV_CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
248 { AV_CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
249 { AV_CODEC_ID_VC1IMAGE, MKTAG('W', 'V', 'P', '2') },
250 { AV_CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
251 { AV_CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
252 { AV_CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
253 { AV_CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
254 { AV_CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
255 { AV_CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
256 { AV_CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
257 { AV_CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
258 { AV_CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
259 { AV_CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
260 { AV_CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
261 { AV_CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') },
262 { AV_CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
263 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'C') },
264 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'K') },
265 { AV_CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
266 { AV_CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
267 { AV_CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
268 { AV_CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
269 { AV_CODEC_ID_CLJR, MKTAG('C', 'L', 'J', 'R') },
270 { AV_CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
271 { AV_CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
272 { AV_CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
273 { AV_CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
274 { AV_CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
275 { AV_CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
276 { AV_CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
277 { AV_CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
278 { AV_CODEC_ID_KGV1, MKTAG('K', 'G', 'V', '1') },
279 { AV_CODEC_ID_LAGARITH, MKTAG('L', 'A', 'G', 'S') },
280 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'A') },
281 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'G') },
282 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '0') },
283 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '2') },
284 { AV_CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
285 { AV_CODEC_ID_DXTORY, MKTAG('x', 't', 'o', 'r') },
286 { AV_CODEC_ID_ZEROCODEC, MKTAG('Z', 'E', 'C', 'O') },
287 { AV_CODEC_ID_MSS1, MKTAG('M', 'S', 'S', '1') },
288 { AV_CODEC_ID_MSA1, MKTAG('M', 'S', 'A', '1') },
289 { AV_CODEC_ID_TSCC2, MKTAG('T', 'S', 'C', '2') },
290 { AV_CODEC_ID_MTS2, MKTAG('M', 'T', 'S', '2') },
291 { AV_CODEC_ID_CLLC, MKTAG('C', 'L', 'L', 'C') },
292 { AV_CODEC_ID_NONE, 0 }
9d9f4119
MR
293};
294
1a40491e 295const AVCodecTag ff_codec_wav_tags[] = {
36ef5369
AK
296 { AV_CODEC_ID_PCM_S16LE, 0x0001 },
297 { AV_CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
298 { AV_CODEC_ID_PCM_S24LE, 0x0001 },
299 { AV_CODEC_ID_PCM_S32LE, 0x0001 },
300 { AV_CODEC_ID_ADPCM_MS, 0x0002 },
301 { AV_CODEC_ID_PCM_F32LE, 0x0003 },
302 { AV_CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
303 { AV_CODEC_ID_PCM_ALAW, 0x0006 },
304 { AV_CODEC_ID_PCM_MULAW, 0x0007 },
305 { AV_CODEC_ID_WMAVOICE, 0x000A },
306 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
307 { AV_CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
308 { AV_CODEC_ID_ADPCM_YAMAHA, 0x0020 },
309 { AV_CODEC_ID_TRUESPEECH, 0x0022 },
310 { AV_CODEC_ID_GSM_MS, 0x0031 },
311 { AV_CODEC_ID_ADPCM_G726, 0x0045 },
312 { AV_CODEC_ID_MP2, 0x0050 },
313 { AV_CODEC_ID_MP3, 0x0055 },
314 { AV_CODEC_ID_AMR_NB, 0x0057 },
315 { AV_CODEC_ID_AMR_WB, 0x0058 },
316 { AV_CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
317 { AV_CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
318 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
319 { AV_CODEC_ID_VOXWARE, 0x0075 },
320 { AV_CODEC_ID_AAC, 0x00ff },
321 { AV_CODEC_ID_SIPR, 0x0130 },
322 { AV_CODEC_ID_WMAV1, 0x0160 },
323 { AV_CODEC_ID_WMAV2, 0x0161 },
324 { AV_CODEC_ID_WMAPRO, 0x0162 },
325 { AV_CODEC_ID_WMALOSSLESS, 0x0163 },
326 { AV_CODEC_ID_ADPCM_CT, 0x0200 },
327 { AV_CODEC_ID_ATRAC3, 0x0270 },
328 { AV_CODEC_ID_ADPCM_G722, 0x028F },
329 { AV_CODEC_ID_IMC, 0x0401 },
330 { AV_CODEC_ID_IAC, 0x0402 },
331 { AV_CODEC_ID_GSM_MS, 0x1500 },
332 { AV_CODEC_ID_TRUESPEECH, 0x1501 },
333 { AV_CODEC_ID_AAC, 0x1600 }, /* ADTS AAC */
334 { AV_CODEC_ID_AAC_LATM, 0x1602 },
335 { AV_CODEC_ID_AC3, 0x2000 },
336 { AV_CODEC_ID_DTS, 0x2001 },
337 { AV_CODEC_ID_PCM_MULAW, 0x6c75 },
338 { AV_CODEC_ID_AAC, 0x706d },
339 { AV_CODEC_ID_AAC, 0x4143 },
340 { AV_CODEC_ID_SPEEX, 0xA109 },
341 { AV_CODEC_ID_FLAC, 0xF1AC },
342 { AV_CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
343 { AV_CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
6ae177aa
DB
344
345 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
9d9f4119 346 // for NuppelVideo (nuv.c)
36ef5369
AK
347 { AV_CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
348 { AV_CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
349 { AV_CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
350 { AV_CODEC_ID_NONE, 0 },
9d9f4119
MR
351};
352
12bc2050
VV
353const AVMetadataConv ff_riff_info_conv[] = {
354 { "IART", "artist" },
355 { "ICMT", "comment" },
356 { "ICOP", "copyright" },
357 { "ICRD", "date" },
358 { "IGNR", "genre" },
359 { "ILNG", "language" },
360 { "INAM", "title" },
361 { "IPRD", "album" },
362 { "IPRT", "track" },
363 { "ISFT", "encoder" },
364 { "ITCH", "encoded_by"},
365 { 0 },
366};
367
368const char ff_riff_tags[][5] = {
369 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
370 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
371 "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
372 {0}
373};
374
b250f9c6 375#if CONFIG_MUXERS
ae628ec1 376int64_t ff_start_tag(AVIOContext *pb, const char *tag)
9d9f4119 377{
0abdb293 378 ffio_wfourcc(pb, tag);
77eb5504 379 avio_wl32(pb, 0);
a2704c97 380 return avio_tell(pb);
9d9f4119
MR
381}
382
ae628ec1 383void ff_end_tag(AVIOContext *pb, int64_t start)
9d9f4119 384{
bc5c918e 385 int64_t pos;
9d9f4119 386
a2704c97 387 pos = avio_tell(pb);
6b4aa5da 388 avio_seek(pb, start - 4, SEEK_SET);
77eb5504 389 avio_wl32(pb, (uint32_t)(pos - start));
6b4aa5da 390 avio_seek(pb, pos, SEEK_SET);
9d9f4119
MR
391}
392
393/* WAVEFORMATEX header */
394/* returns the size or -1 on error */
ae628ec1 395int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
9d9f4119 396{
c019070f 397 int bps, blkalign, bytespersec, frame_size;
9d9f4119 398 int hdrsize = 18;
6e9f56c1
RB
399 int waveformatextensible;
400 uint8_t temp[256];
401 uint8_t *riff_extradata= temp;
402 uint8_t *riff_extradata_start= temp;
9d9f4119
MR
403
404 if(!enc->codec_tag || enc->codec_tag > 0xffff)
9d9f4119 405 return -1;
c019070f
JR
406
407 /* We use the known constant frame size for the codec if known, otherwise
408 fallback to using AVCodecContext.frame_size, which is not as reliable
409 for indicating packet duration */
410 frame_size = av_get_audio_frame_duration(enc, 0);
411 if (!frame_size)
412 frame_size = enc->frame_size;
413
2c2a167c
MN
414 waveformatextensible = (enc->channels > 2 && enc->channel_layout)
415 || enc->sample_rate > 48000
416 || av_get_bits_per_sample(enc->codec_id) > 16;
9d9f4119 417
6e9f56c1 418 if (waveformatextensible) {
77eb5504 419 avio_wl16(pb, 0xfffe);
6e9f56c1 420 } else {
77eb5504 421 avio_wl16(pb, enc->codec_tag);
6e9f56c1 422 }
77eb5504
AK
423 avio_wl16(pb, enc->channels);
424 avio_wl32(pb, enc->sample_rate);
36ef5369 425 if (enc->codec_id == AV_CODEC_ID_MP2 || enc->codec_id == AV_CODEC_ID_MP3 || enc->codec_id == AV_CODEC_ID_GSM_MS) {
9d9f4119 426 bps = 0;
9d9f4119 427 } else {
6ac34eed
JR
428 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
429 if (enc->bits_per_coded_sample)
430 bps = enc->bits_per_coded_sample;
431 else
432 bps = 16; // default to 16
433 }
9d9f4119 434 }
dd1c8f3e
LA
435 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
436 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 437 }
9d9f4119 438
36ef5369 439 if (enc->codec_id == AV_CODEC_ID_MP2 || enc->codec_id == AV_CODEC_ID_MP3) {
c019070f
JR
440 /* this is wrong, but it seems many demuxers do not work if this is set
441 correctly */
442 blkalign = frame_size;
9d9f4119 443 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
36ef5369 444 } else if (enc->codec_id == AV_CODEC_ID_AC3) {
504530bf 445 blkalign = 3840; //maximum bytes per frame
9d9f4119
MR
446 } else if (enc->block_align != 0) { /* specified by the codec */
447 blkalign = enc->block_align;
448 } else
6ac34eed 449 blkalign = bps * enc->channels / av_gcd(8, bps);
36ef5369
AK
450 if (enc->codec_id == AV_CODEC_ID_PCM_U8 ||
451 enc->codec_id == AV_CODEC_ID_PCM_S24LE ||
452 enc->codec_id == AV_CODEC_ID_PCM_S32LE ||
453 enc->codec_id == AV_CODEC_ID_PCM_F32LE ||
454 enc->codec_id == AV_CODEC_ID_PCM_F64LE ||
455 enc->codec_id == AV_CODEC_ID_PCM_S16LE) {
9d9f4119
MR
456 bytespersec = enc->sample_rate * blkalign;
457 } else {
458 bytespersec = enc->bit_rate / 8;
459 }
77eb5504
AK
460 avio_wl32(pb, bytespersec); /* bytes per second */
461 avio_wl16(pb, blkalign); /* block align */
462 avio_wl16(pb, bps); /* bits per sample */
36ef5369 463 if (enc->codec_id == AV_CODEC_ID_MP3) {
9d9f4119 464 hdrsize += 12;
6e9f56c1
RB
465 bytestream_put_le16(&riff_extradata, 1); /* wID */
466 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
467 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
468 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
469 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
36ef5369 470 } else if (enc->codec_id == AV_CODEC_ID_MP2) {
9d9f4119 471 hdrsize += 22;
6e9f56c1
RB
472 bytestream_put_le16(&riff_extradata, 2); /* fwHeadLayer */
473 bytestream_put_le32(&riff_extradata, enc->bit_rate); /* dwHeadBitrate */
474 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
475 bytestream_put_le16(&riff_extradata, 0); /* fwHeadModeExt */
476 bytestream_put_le16(&riff_extradata, 1); /* wHeadEmphasis */
477 bytestream_put_le16(&riff_extradata, 16); /* fwHeadFlags */
478 bytestream_put_le32(&riff_extradata, 0); /* dwPTSLow */
479 bytestream_put_le32(&riff_extradata, 0); /* dwPTSHigh */
36ef5369 480 } else if (enc->codec_id == AV_CODEC_ID_GSM_MS || enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
9d9f4119 481 hdrsize += 2;
c019070f 482 bytestream_put_le16(&riff_extradata, frame_size); /* wSamplesPerBlock */
9d9f4119 483 } else if(enc->extradata_size){
6e9f56c1
RB
484 riff_extradata_start= enc->extradata;
485 riff_extradata= enc->extradata + enc->extradata_size;
9d9f4119 486 hdrsize += enc->extradata_size;
6e9f56c1
RB
487 }
488 if(waveformatextensible) { /* write WAVEFORMATEXTENSIBLE extensions */
489 hdrsize += 22;
77eb5504 490 avio_wl16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
8099fc76 491 avio_wl16(pb, bps); /* ValidBitsPerSample || SamplesPerBlock || Reserved */
77eb5504
AK
492 avio_wl32(pb, enc->channel_layout); /* dwChannelMask */
493 avio_wl32(pb, enc->codec_tag); /* GUID + next 3 */
494 avio_wl32(pb, 0x00100000);
495 avio_wl32(pb, 0xAA000080);
496 avio_wl32(pb, 0x719B3800);
2c4e08d8
JB
497 } else {
498 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
6e9f56c1 499 }
77eb5504 500 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
4bce3ba4
RB
501 if(hdrsize&1){
502 hdrsize++;
77eb5504 503 avio_w8(pb, 0);
4bce3ba4 504 }
9d9f4119
MR
505
506 return hdrsize;
507}
508
509/* BITMAPINFOHEADER header */
ae628ec1 510void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
9d9f4119 511{
77eb5504
AK
512 avio_wl32(pb, 40 + enc->extradata_size); /* size */
513 avio_wl32(pb, enc->width);
31f2616d 514 //We always store RGB TopDown
77eb5504
AK
515 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
516 avio_wl16(pb, 1); /* planes */
9d9f4119 517
77eb5504 518 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
9d9f4119 519 /* compression type */
77eb5504
AK
520 avio_wl32(pb, enc->codec_tag);
521 avio_wl32(pb, enc->width * enc->height * 3);
522 avio_wl32(pb, 0);
523 avio_wl32(pb, 0);
524 avio_wl32(pb, 0);
525 avio_wl32(pb, 0);
9d9f4119 526
77eb5504 527 avio_write(pb, enc->extradata, enc->extradata_size);
9d9f4119 528
63100f58 529 if (!for_asf && enc->extradata_size & 1)
77eb5504 530 avio_w8(pb, 0);
9d9f4119
MR
531}
532#endif //CONFIG_MUXERS
533
b250f9c6 534#if CONFIG_DEMUXERS
9d9f4119
MR
535/* We could be given one of the three possible structures here:
536 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
537 * is an expansion of the previous one with the fields added
538 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
539 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
540 * an openended structure.
541 */
ca402f32 542int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
9d9f4119
MR
543{
544 int id;
545
b7effd4e 546 id = avio_rl16(pb);
72415b2a 547 codec->codec_type = AVMEDIA_TYPE_AUDIO;
9d9f4119 548 codec->codec_tag = id;
b7effd4e
AK
549 codec->channels = avio_rl16(pb);
550 codec->sample_rate = avio_rl32(pb);
551 codec->bit_rate = avio_rl32(pb) * 8;
552 codec->block_align = avio_rl16(pb);
9d9f4119 553 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
dd1c8f3e 554 codec->bits_per_coded_sample = 8;
9d9f4119 555 }else
b7effd4e 556 codec->bits_per_coded_sample = avio_rl16(pb);
72fd40bd 557 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
b7effd4e 558 int cbSize = avio_rl16(pb); /* cbSize */
72fd40bd
BC
559 size -= 18;
560 cbSize = FFMIN(size, cbSize);
561 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
b7effd4e
AK
562 codec->bits_per_coded_sample = avio_rl16(pb);
563 codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
564 id = avio_rl32(pb); /* 4 first bytes of GUID */
45a8a02a 565 avio_skip(pb, 12); /* skip end of GUID */
72fd40bd
BC
566 cbSize -= 22;
567 size -= 22;
568 }
569 codec->extradata_size = cbSize;
570 if (cbSize > 0) {
ed8a5006 571 av_free(codec->extradata);
9d9f4119 572 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
ca402f32
MH
573 if (!codec->extradata)
574 return AVERROR(ENOMEM);
b7effd4e 575 avio_read(pb, codec->extradata, codec->extradata_size);
72fd40bd
BC
576 size -= cbSize;
577 }
9d9f4119
MR
578
579 /* It is possible for the chunk to contain garbage at the end */
72fd40bd 580 if (size > 0)
45a8a02a 581 avio_skip(pb, size);
9d9f4119 582 }
1a40491e 583 codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
36ef5369 584 if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {
50d83b20
PR
585 /* channels and sample_rate values are those prior to applying SBR and/or PS */
586 codec->channels = 0;
587 codec->sample_rate = 0;
588 }
6ac34eed 589 /* override bits_per_coded_sample for G.726 */
36ef5369 590 if (codec->codec_id == AV_CODEC_ID_ADPCM_G726)
6ac34eed 591 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
ca402f32
MH
592
593 return 0;
9d9f4119
MR
594}
595
596
36ef5369 597enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
9d9f4119 598{
36ef5369 599 enum AVCodecID id;
1a40491e 600 id = ff_codec_get_id(ff_codec_wav_tags, tag);
9d9f4119
MR
601 if (id <= 0)
602 return id;
603 /* handle specific u8 codec */
36ef5369
AK
604 if (id == AV_CODEC_ID_PCM_S16LE && bps == 8)
605 id = AV_CODEC_ID_PCM_U8;
606 if (id == AV_CODEC_ID_PCM_S16LE && bps == 24)
607 id = AV_CODEC_ID_PCM_S24LE;
608 if (id == AV_CODEC_ID_PCM_S16LE && bps == 32)
609 id = AV_CODEC_ID_PCM_S32LE;
610 if (id == AV_CODEC_ID_PCM_F32LE && bps == 64)
611 id = AV_CODEC_ID_PCM_F64LE;
612 if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
613 id = AV_CODEC_ID_PCM_ZORK;
9d9f4119
MR
614 return id;
615}
773d892a 616
ae628ec1 617int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
773d892a
PR
618{
619 int tag1;
b7effd4e
AK
620 avio_rl32(pb); /* size */
621 st->codec->width = avio_rl32(pb);
622 st->codec->height = (int32_t)avio_rl32(pb);
623 avio_rl16(pb); /* planes */
624 st->codec->bits_per_coded_sample= avio_rl16(pb); /* depth */
625 tag1 = avio_rl32(pb);
626 avio_rl32(pb); /* ImageSize */
627 avio_rl32(pb); /* XPelsPerMeter */
628 avio_rl32(pb); /* YPelsPerMeter */
629 avio_rl32(pb); /* ClrUsed */
630 avio_rl32(pb); /* ClrImportant */
773d892a
PR
631 return tag1;
632}
9d9f4119
MR
633#endif // CONFIG_DEMUXERS
634
635void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
636{
637 int gcd;
c019070f
JR
638 int audio_frame_size;
639
640 /* We use the known constant frame size for the codec if known, otherwise
641 fallback to using AVCodecContext.frame_size, which is not as reliable
642 for indicating packet duration */
643 audio_frame_size = av_get_audio_frame_duration(stream, 0);
644 if (!audio_frame_size)
645 audio_frame_size = stream->frame_size;
9d9f4119
MR
646
647 *au_ssize= stream->block_align;
c019070f
JR
648 if (audio_frame_size && stream->sample_rate) {
649 *au_scale = audio_frame_size;
9d9f4119 650 *au_rate= stream->sample_rate;
72415b2a 651 }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
e3b540b4 652 stream->codec_type == AVMEDIA_TYPE_DATA ||
72415b2a 653 stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
9d9f4119
MR
654 *au_scale= stream->time_base.num;
655 *au_rate = stream->time_base.den;
656 }else{
657 *au_scale= stream->block_align ? stream->block_align*8 : 8;
a7805e29 658 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
9d9f4119 659 }
9ce6c138 660 gcd= av_gcd(*au_scale, *au_rate);
9d9f4119
MR
661 *au_scale /= gcd;
662 *au_rate /= gcd;
663}
12bc2050
VV
664
665int ff_read_riff_info(AVFormatContext *s, int64_t size)
666{
667 int64_t start, end, cur;
668 AVIOContext *pb = s->pb;
669
670 start = avio_tell(pb);
671 end = start + size;
672
673 while ((cur = avio_tell(pb)) >= 0 && cur <= end - 8 /* = tag + size */) {
674 uint32_t chunk_code;
675 int64_t chunk_size;
676 char key[5] = {0};
677 char *value;
678
679 chunk_code = avio_rl32(pb);
680 chunk_size = avio_rl32(pb);
681 if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
682 av_log(s, AV_LOG_ERROR, "too big INFO subchunk\n");
683 return AVERROR_INVALIDDATA;
684 }
685
686 chunk_size += (chunk_size & 1);
687
688 value = av_malloc(chunk_size + 1);
689 if (!value) {
690 av_log(s, AV_LOG_ERROR, "out of memory, unable to read INFO tag\n");
691 return AVERROR(ENOMEM);
692 }
693
694 AV_WL32(key, chunk_code);
695
696 if (avio_read(pb, value, chunk_size) != chunk_size) {
15cea369 697 av_free(value);
12bc2050
VV
698 av_log(s, AV_LOG_ERROR, "premature end of file while reading INFO tag\n");
699 return AVERROR_INVALIDDATA;
700 }
701
702 value[chunk_size] = 0;
703
704 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
705 }
706
707 return 0;
708}