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ffmpeg / libavformat / riff.c @ d267b339

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1 9d9f4119 Måns Rullgård
/*
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 * RIFF codec tags
3 406792e7 Diego Biurrun
 * Copyright (c) 2000 Fabrice Bellard
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 *
5 b78e7197 Diego Biurrun
 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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22 245976da Diego Biurrun
#include "libavcodec/avcodec.h"
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#include "avformat.h"
24
#include "riff.h"
25 6e9f56c1 Ronald S. Bultje
#include "libavcodec/bytestream.h"
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27
/* Note: when encoding, the first matching tag is used, so order is
28
   important if multiple tags possible for a given codec. */
29 1a40491e Daniel Verkamp
const AVCodecTag ff_codec_bmp_tags[] = {
30 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_H264,         MKTAG('H', '2', '6', '4') },
31
    { CODEC_ID_H264,         MKTAG('h', '2', '6', '4') },
32
    { CODEC_ID_H264,         MKTAG('X', '2', '6', '4') },
33
    { CODEC_ID_H264,         MKTAG('x', '2', '6', '4') },
34
    { CODEC_ID_H264,         MKTAG('a', 'v', 'c', '1') },
35
    { CODEC_ID_H264,         MKTAG('V', 'S', 'S', 'H') },
36
    { CODEC_ID_H263,         MKTAG('H', '2', '6', '3') },
37 26e8d342 Ben Littler
    { CODEC_ID_H263,         MKTAG('X', '2', '6', '3') },
38 d7c6552c Ben Littler
    { CODEC_ID_H263,         MKTAG('T', '2', '6', '3') },
39 26e8d342 Ben Littler
    { CODEC_ID_H263,         MKTAG('L', '2', '6', '3') },
40 62d6f73e Ben Littler
    { CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },
41 5aef8462 Michael Niedermayer
    { CODEC_ID_H263,         MKTAG('Z', 'y', 'G', 'o') },
42 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },
43
    { CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* intel h263 */
44
    { CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },
45
    { CODEC_ID_H263P,        MKTAG('U', '2', '6', '3') },
46
    { CODEC_ID_H263P,        MKTAG('v', 'i', 'v', '1') },
47
    { CODEC_ID_MPEG4,        MKTAG('F', 'M', 'P', '4') },
48
    { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', 'X') },
49
    { CODEC_ID_MPEG4,        MKTAG('D', 'X', '5', '0') },
50
    { CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'D') },
51
    { CODEC_ID_MPEG4,        MKTAG('M', 'P', '4', 'S') },
52
    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },
53 36b0782e Aurelien Jacobs
    { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) }, /* some broken avi use this */
54 ab0b2e55 Aurelien Jacobs
    { 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
    { CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },
61 1b46683c Benjamin Larsson
    { CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },
62 f0feb4d7 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
63 26ae363e Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },
64 4a49a5fd Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },
65 26e8d342 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },
66
    { CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },
67
    { CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },
68
    { CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },
69
    { CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },
70
    { CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },
71
    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },
72 b8cf645b Michael Niedermayer
    { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },
73 26e8d342 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('H', 'D', 'X', '4') }, /* flipped video */
74 62d6f73e Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('D', 'M', 'K', '2') },
75 41b0534a Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'G', 'I') },
76 4a49a5fd Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('I', 'N', 'M', 'C') },
77 5823e4b8 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
78 76af2edc Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('E', 'M', '4', 'A') },
79 52837498 Alex Converse
    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
80 3596f4e0 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('S', 'N', '4', '0') },
81 6667d5a5 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('V', 'S', 'P', 'X') },
82 5bc3fc21 Ben Littler
    { CODEC_ID_MPEG4,        MKTAG('U', 'L', 'D', 'X') },
83 86d58bcf Michael Niedermayer
    { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'V') },
84 74c853b6 Carl Eugen Hoyos
    { CODEC_ID_MPEG4,        MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
85 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', '4', '3') },
86 2d91366c Carl Eugen Hoyos
    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '3') },
87 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', 'G', '3') },
88
    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '5') },
89
    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '6') },
90
    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '4') },
91 4a49a5fd Ben Littler
    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'V', 'X', '3') },
92 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSMPEG4V3,    MKTAG('A', 'P', '4', '1') },
93
    { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '1') },
94
    { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '0') },
95
    { CODEC_ID_MSMPEG4V2,    MKTAG('M', 'P', '4', '2') },
96
    { CODEC_ID_MSMPEG4V2,    MKTAG('D', 'I', 'V', '2') },
97
    { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', 'G', '4') },
98 26e8d342 Ben Littler
    { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', '4', '1') },
99 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_WMV1,         MKTAG('W', 'M', 'V', '1') },
100
    { CODEC_ID_WMV2,         MKTAG('W', 'M', 'V', '2') },
101
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'd') },
102
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', 'd') },
103 f9928b7e Ben Littler
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
104 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'l') },
105
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '2', '5') },
106
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '5', '0') },
107
    { CODEC_ID_DVVIDEO,      MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
108 13b47b40 Ben Littler
    { CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
109 26e8d342 Ben Littler
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', ' ') },
110 4bae2251 Ben Littler
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', 's') },
111 c20a305b Baptiste Coudurier
    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
112 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '1') },
113
    { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '2') },
114
    { CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', '2') },
115
    { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'P', 'E', 'G') },
116
    { CODEC_ID_MPEG1VIDEO,   MKTAG('P', 'I', 'M', '1') },
117 26e8d342 Ben Littler
    { CODEC_ID_MPEG2VIDEO,   MKTAG('P', 'I', 'M', '2') },
118 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MPEG1VIDEO,   MKTAG('V', 'C', 'R', '2') },
119 36b0782e Aurelien Jacobs
    { CODEC_ID_MPEG1VIDEO,   MKTAG( 1 ,  0 ,  0 ,  16) },
120
    { CODEC_ID_MPEG2VIDEO,   MKTAG( 2 ,  0 ,  0 ,  16) },
121 bc7ea1e5 Jason Garrett-Glaser
    { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  16) },
122 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MPEG2VIDEO,   MKTAG('D', 'V', 'R', ' ') },
123
    { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'M', 'E', 'S') },
124 6cffaea8 Ben Littler
    { CODEC_ID_MPEG2VIDEO,   MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
125 483aad71 Michael Niedermayer
    { CODEC_ID_MPEG2VIDEO,   MKTAG('s', 'l', 'i', 'f') },
126 f63e5a74 Carl Eugen Hoyos
    { CODEC_ID_MPEG2VIDEO,   MKTAG('E', 'M', '2', 'V') },
127 77d3f1f7 Tomas Härdin
    { CODEC_ID_MPEG2VIDEO,   MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
128 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'P', 'G') },
129
    { CODEC_ID_MJPEG,        MKTAG('L', 'J', 'P', 'G') },
130 26e8d342 Ben Littler
    { CODEC_ID_MJPEG,        MKTAG('d', 'm', 'b', '1') },
131 94ec3aca Carl Eugen Hoyos
    { CODEC_ID_MJPEG,        MKTAG('m', 'j', 'p', 'a') },
132 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_LJPEG,        MKTAG('L', 'J', 'P', 'G') },
133
    { CODEC_ID_MJPEG,        MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
134
    { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
135 f10d3d34 Francesco Lavra
    { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'P', 'G') },
136 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
137
    { CODEC_ID_MJPEG,        MKTAG('j', 'p', 'e', 'g') },
138
    { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'P', 'G') },
139
    { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'R', 'n') },
140 65fec2d9 Mike Melanson
    { CODEC_ID_MJPEG,        MKTAG('A', 'C', 'D', 'V') },
141 a9cf309b Ben Littler
    { CODEC_ID_MJPEG,        MKTAG('Q', 'I', 'V', 'G') },
142 ed0879ed Ben Littler
    { CODEC_ID_MJPEG,        MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
143 54f8abde Ben Littler
    { CODEC_ID_MJPEG,        MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
144 54089ecd Carl Eugen Hoyos
    { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
145 dd9d5a1e Carl Eugen Hoyos
    { CODEC_ID_MJPEG,        MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
146 4b86926b Carl Eugen Hoyos
    { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '1') },
147
    { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '2') },
148 ab176fdf Carl Eugen Hoyos
    { CODEC_ID_MJPEG,        MKTAG('M', 'T', 'S', 'J') },
149 418a287c Ben Littler
    { CODEC_ID_MJPEG,        MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
150 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_HUFFYUV,      MKTAG('H', 'F', 'Y', 'U') },
151
    { CODEC_ID_FFVHUFF,      MKTAG('F', 'F', 'V', 'H') },
152
    { CODEC_ID_CYUV,         MKTAG('C', 'Y', 'U', 'V') },
153 36b0782e Aurelien Jacobs
    { CODEC_ID_RAWVIDEO,     MKTAG( 0 ,  0 ,  0 ,  0 ) },
154 fc3fc029 Jason Garrett-Glaser
    { CODEC_ID_RAWVIDEO,     MKTAG( 3 ,  0 ,  0 ,  0 ) },
155 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_RAWVIDEO,     MKTAG('I', '4', '2', '0') },
156
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'Y', '2') },
157
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', '2') },
158 9853bbb2 Ben Littler
    { CODEC_ID_RAWVIDEO,     MKTAG('V', '4', '2', '2') },
159
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'N', 'V') },
160
    { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'V') },
161
    { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'Y') },
162
    { CODEC_ID_RAWVIDEO,     MKTAG('u', 'y', 'v', '1') },
163
    { CODEC_ID_RAWVIDEO,     MKTAG('2', 'V', 'u', '1') },
164 13547dd1 Ben Littler
    { CODEC_ID_RAWVIDEO,     MKTAG('2', 'v', 'u', 'y') },
165 3d305fd0 Andrew Wason
    { CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', 's') },
166 9853bbb2 Ben Littler
    { CODEC_ID_RAWVIDEO,     MKTAG('P', '4', '2', '2') },
167 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '2') },
168
    { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'V', 'Y') },
169 e47ca4f7 Ben Littler
    { CODEC_ID_RAWVIDEO,     MKTAG('V', 'Y', 'U', 'Y') },
170 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_RAWVIDEO,     MKTAG('I', 'Y', 'U', 'V') },
171
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', '0', '0') },
172
    { CODEC_ID_RAWVIDEO,     MKTAG('H', 'D', 'Y', 'C') },
173 71b0654c Michael Niedermayer
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
174 8be7ac98 ami_stuff
    { CODEC_ID_RAWVIDEO,     MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
175 b43f432c Stefano Sabatini
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', '1') },
176 73762de1 Stefano Sabatini
    { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '1', '2') },
177
    { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '2', '1') },
178 781cf5fd Stefano Sabatini
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', 'B') },
179
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', 'B') },
180
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'V', '9') },
181
    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
182 d8b35b85 Reimar Döffinger
    { CODEC_ID_FRWU,         MKTAG('F', 'R', 'W', 'U') },
183 43836928 Zhou Zongyi
    { CODEC_ID_R10K,         MKTAG('R', '1', '0', 'k') },
184 4aaab0a3 Reimar Döffinger
    { CODEC_ID_R210,         MKTAG('r', '2', '1', '0') },
185 9c4e266c Baptiste Coudurier
    { CODEC_ID_V210,         MKTAG('v', '2', '1', '0') },
186 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '1') },
187
    { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '2') },
188
    { CODEC_ID_INDEO4,       MKTAG('I', 'V', '4', '1') },
189
    { CODEC_ID_INDEO5,       MKTAG('I', 'V', '5', '0') },
190
    { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '1') },
191
    { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '0') },
192
    { CODEC_ID_VP5,          MKTAG('V', 'P', '5', '0') },
193
    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '0') },
194
    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '1') },
195
    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '2') },
196 337104ac Anssi Hannula
    { CODEC_ID_VP6F,         MKTAG('V', 'P', '6', 'F') },
197 03cb8458 Christian Schmidt
    { CODEC_ID_VP6F,         MKTAG('F', 'L', 'V', '4') },
198 6c7c6293 Google
    { CODEC_ID_VP8,          MKTAG('V', 'P', '8', '0') },
199 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_ASV1,         MKTAG('A', 'S', 'V', '1') },
200
    { CODEC_ID_ASV2,         MKTAG('A', 'S', 'V', '2') },
201
    { CODEC_ID_VCR1,         MKTAG('V', 'C', 'R', '1') },
202
    { CODEC_ID_FFV1,         MKTAG('F', 'F', 'V', '1') },
203
    { CODEC_ID_XAN_WC4,      MKTAG('X', 'x', 'a', 'n') },
204 e2260faa Ben Littler
    { CODEC_ID_MIMIC,        MKTAG('L', 'M', '2', '0') },
205 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSRLE,        MKTAG('m', 'r', 'l', 'e') },
206 36b0782e Aurelien Jacobs
    { CODEC_ID_MSRLE,        MKTAG( 1 ,  0 ,  0 ,  0 ) },
207 b30cb420 Kostya Shishkov
    { CODEC_ID_MSRLE,        MKTAG( 2 ,  0 ,  0 ,  0 ) },
208 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSVIDEO1,     MKTAG('M', 'S', 'V', 'C') },
209
    { CODEC_ID_MSVIDEO1,     MKTAG('m', 's', 'v', 'c') },
210
    { CODEC_ID_MSVIDEO1,     MKTAG('C', 'R', 'A', 'M') },
211
    { CODEC_ID_MSVIDEO1,     MKTAG('c', 'r', 'a', 'm') },
212
    { CODEC_ID_MSVIDEO1,     MKTAG('W', 'H', 'A', 'M') },
213
    { CODEC_ID_MSVIDEO1,     MKTAG('w', 'h', 'a', 'm') },
214
    { CODEC_ID_CINEPAK,      MKTAG('c', 'v', 'i', 'd') },
215
    { CODEC_ID_TRUEMOTION1,  MKTAG('D', 'U', 'C', 'K') },
216 bf23f6dc Ben Littler
    { CODEC_ID_TRUEMOTION1,  MKTAG('P', 'V', 'E', 'Z') },
217 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_MSZH,         MKTAG('M', 'S', 'Z', 'H') },
218
    { CODEC_ID_ZLIB,         MKTAG('Z', 'L', 'I', 'B') },
219
    { CODEC_ID_SNOW,         MKTAG('S', 'N', 'O', 'W') },
220
    { CODEC_ID_4XM,          MKTAG('4', 'X', 'M', 'V') },
221
    { CODEC_ID_FLV1,         MKTAG('F', 'L', 'V', '1') },
222
    { CODEC_ID_FLASHSV,      MKTAG('F', 'S', 'V', '1') },
223
    { CODEC_ID_SVQ1,         MKTAG('s', 'v', 'q', '1') },
224
    { CODEC_ID_TSCC,         MKTAG('t', 's', 'c', 'c') },
225
    { CODEC_ID_ULTI,         MKTAG('U', 'L', 'T', 'I') },
226
    { CODEC_ID_VIXL,         MKTAG('V', 'I', 'X', 'L') },
227
    { CODEC_ID_QPEG,         MKTAG('Q', 'P', 'E', 'G') },
228
    { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '0') },
229
    { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '1') },
230
    { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', '3') },
231 cba322d7 Kostya Shishkov
    { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', 'P') },
232 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_VC1,          MKTAG('W', 'V', 'C', '1') },
233
    { CODEC_ID_VC1,          MKTAG('W', 'M', 'V', 'A') },
234
    { CODEC_ID_LOCO,         MKTAG('L', 'O', 'C', 'O') },
235
    { CODEC_ID_WNV1,         MKTAG('W', 'N', 'V', '1') },
236
    { CODEC_ID_AASC,         MKTAG('A', 'A', 'S', 'C') },
237
    { CODEC_ID_INDEO2,       MKTAG('R', 'T', '2', '1') },
238
    { CODEC_ID_FRAPS,        MKTAG('F', 'P', 'S', '1') },
239
    { CODEC_ID_THEORA,       MKTAG('t', 'h', 'e', 'o') },
240
    { CODEC_ID_TRUEMOTION2,  MKTAG('T', 'M', '2', '0') },
241
    { CODEC_ID_CSCD,         MKTAG('C', 'S', 'C', 'D') },
242
    { CODEC_ID_ZMBV,         MKTAG('Z', 'M', 'B', 'V') },
243
    { CODEC_ID_KMVC,         MKTAG('K', 'M', 'V', 'C') },
244
    { CODEC_ID_CAVS,         MKTAG('C', 'A', 'V', 'S') },
245
    { CODEC_ID_JPEG2000,     MKTAG('M', 'J', '2', 'C') },
246
    { CODEC_ID_VMNC,         MKTAG('V', 'M', 'n', 'c') },
247
    { CODEC_ID_TARGA,        MKTAG('t', 'g', 'a', ' ') },
248 f86cd761 Ben Littler
    { CODEC_ID_PNG,          MKTAG('M', 'P', 'N', 'G') },
249 0dccbba0 Thilo Borgmann
    { CODEC_ID_PNG,          MKTAG('P', 'N', 'G', '1') },
250 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_CLJR,         MKTAG('c', 'l', 'j', 'r') },
251 eb64714c Anuradha Suraparaju
    { CODEC_ID_DIRAC,        MKTAG('d', 'r', 'a', 'c') },
252 65fec2d9 Mike Melanson
    { CODEC_ID_RPZA,         MKTAG('a', 'z', 'p', 'r') },
253 c6340f86 Ben Littler
    { CODEC_ID_RPZA,         MKTAG('R', 'P', 'Z', 'A') },
254
    { CODEC_ID_RPZA,         MKTAG('r', 'p', 'z', 'a') },
255 e80c73b3 Eli Friedman
    { CODEC_ID_SP5X,         MKTAG('S', 'P', '5', '4') },
256 c21fbefb Kostya Shishkov
    { CODEC_ID_AURA,         MKTAG('A', 'U', 'R', 'A') },
257
    { CODEC_ID_AURA2,        MKTAG('A', 'U', 'R', '2') },
258 94d3d6a4 Jimmy Christensen
    { CODEC_ID_DPX,          MKTAG('d', 'p', 'x', ' ') },
259 bf354122 Daniel Verkamp
    { CODEC_ID_KGV1,         MKTAG('K', 'G', 'V', '1') },
260 d267b339 Carl Eugen Hoyos
    { CODEC_ID_LAGARITH,     MKTAG('L', 'A', 'G', 'S') },
261 ab0b2e55 Aurelien Jacobs
    { CODEC_ID_NONE,         0 }
262 9d9f4119 Måns Rullgård
};
263
264 1a40491e Daniel Verkamp
const AVCodecTag ff_codec_wav_tags[] = {
265 8af9090f Diego Biurrun
    { CODEC_ID_PCM_S16LE,       0x0001 },
266
    { CODEC_ID_PCM_U8,          0x0001 }, /* must come after s16le in this list */
267
    { CODEC_ID_PCM_S24LE,       0x0001 },
268
    { CODEC_ID_PCM_S32LE,       0x0001 },
269
    { CODEC_ID_ADPCM_MS,        0x0002 },
270 57406d8e Peter Ross
    { CODEC_ID_PCM_F32LE,       0x0003 },
271
    { CODEC_ID_PCM_F64LE,       0x0003 }, /* must come after f32le in this list */
272 8af9090f Diego Biurrun
    { CODEC_ID_PCM_ALAW,        0x0006 },
273
    { CODEC_ID_PCM_MULAW,       0x0007 },
274
    { CODEC_ID_WMAVOICE,        0x000A },
275
    { CODEC_ID_ADPCM_IMA_WAV,   0x0011 },
276 4e0e6888 Peter Ross
    { CODEC_ID_PCM_ZORK,        0x0011 }, /* must come after adpcm_ima_wav in this list */
277 8af9090f Diego Biurrun
    { CODEC_ID_ADPCM_YAMAHA,    0x0020 },
278
    { CODEC_ID_TRUESPEECH,      0x0022 },
279
    { CODEC_ID_GSM_MS,          0x0031 },
280
    { CODEC_ID_ADPCM_G726,      0x0045 },
281
    { CODEC_ID_MP2,             0x0050 },
282
    { CODEC_ID_MP3,             0x0055 },
283 c26436ec Ben Littler
    { CODEC_ID_AMR_NB,          0x0057 },
284
    { CODEC_ID_AMR_WB,          0x0058 },
285 8af9090f Diego Biurrun
    { CODEC_ID_ADPCM_IMA_DK4,   0x0061 },  /* rogue format number */
286
    { CODEC_ID_ADPCM_IMA_DK3,   0x0062 },  /* rogue format number */
287 4becee23 Stefan Gehrer
    { CODEC_ID_ADPCM_IMA_WAV,   0x0069 },
288 8af9090f Diego Biurrun
    { CODEC_ID_VOXWARE,         0x0075 },
289
    { CODEC_ID_AAC,             0x00ff },
290 faeedbbb Benjamin Larsson
    { CODEC_ID_SIPR,            0x0130 },
291 8af9090f Diego Biurrun
    { CODEC_ID_WMAV1,           0x0160 },
292
    { CODEC_ID_WMAV2,           0x0161 },
293
    { CODEC_ID_WMAPRO,          0x0162 },
294 800b9c24 Benjamin Larsson
    { CODEC_ID_WMALOSSLESS,     0x0163 },
295 8af9090f Diego Biurrun
    { CODEC_ID_ADPCM_CT,        0x0200 },
296
    { CODEC_ID_ATRAC3,          0x0270 },
297 e8ffb2fa Peter Ross
    { CODEC_ID_ADPCM_G722,      0x028F },
298 8af9090f Diego Biurrun
    { CODEC_ID_IMC,             0x0401 },
299 4bf2b9e8 Ben Littler
    { CODEC_ID_GSM_MS,          0x1500 },
300
    { CODEC_ID_TRUESPEECH,      0x1501 },
301 8af9090f Diego Biurrun
    { CODEC_ID_AC3,             0x2000 },
302
    { CODEC_ID_DTS,             0x2001 },
303
    { CODEC_ID_SONIC,           0x2048 },
304
    { CODEC_ID_SONIC_LS,        0x2048 },
305 8e6e9bac Jai Menon
    { CODEC_ID_PCM_MULAW,       0x6c75 },
306 8af9090f Diego Biurrun
    { CODEC_ID_AAC,             0x706d },
307 6cffaea8 Ben Littler
    { CODEC_ID_AAC,             0x4143 },
308 8af9090f Diego Biurrun
    { CODEC_ID_FLAC,            0xF1AC },
309
    { CODEC_ID_ADPCM_SWF,       ('S'<<8)+'F' },
310
    { CODEC_ID_VORBIS,          ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
311 6ae177aa Diego Biurrun
312
    /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
313 9d9f4119 Måns Rullgård
    // for NuppelVideo (nuv.c)
314
    { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
315 8af9090f Diego Biurrun
    { CODEC_ID_MP3,       MKTAG('L', 'A', 'M', 'E') },
316
    { CODEC_ID_MP3,       MKTAG('M', 'P', '3', ' ') },
317 bc2d2a07 Carl Eugen Hoyos
    { CODEC_ID_NONE,      0 },
318 9d9f4119 Måns Rullgård
};
319
320 b250f9c6 Aurelien Jacobs
#if CONFIG_MUXERS
321 1a40491e Daniel Verkamp
int64_t ff_start_tag(ByteIOContext *pb, const char *tag)
322 9d9f4119 Måns Rullgård
{
323
    put_tag(pb, tag);
324
    put_le32(pb, 0);
325
    return url_ftell(pb);
326
}
327
328 1a40491e Daniel Verkamp
void ff_end_tag(ByteIOContext *pb, int64_t start)
329 9d9f4119 Måns Rullgård
{
330 bc5c918e Diego Biurrun
    int64_t pos;
331 9d9f4119 Måns Rullgård
332
    pos = url_ftell(pb);
333
    url_fseek(pb, start - 4, SEEK_SET);
334
    put_le32(pb, (uint32_t)(pos - start));
335
    url_fseek(pb, pos, SEEK_SET);
336
}
337
338
/* WAVEFORMATEX header */
339
/* returns the size or -1 on error */
340 1a40491e Daniel Verkamp
int ff_put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
341 9d9f4119 Måns Rullgård
{
342
    int bps, blkalign, bytespersec;
343
    int hdrsize = 18;
344 6e9f56c1 Ronald S. Bultje
    int waveformatextensible;
345
    uint8_t temp[256];
346
    uint8_t *riff_extradata= temp;
347
    uint8_t *riff_extradata_start= temp;
348 9d9f4119 Måns Rullgård
349
    if(!enc->codec_tag || enc->codec_tag > 0xffff)
350
        return -1;
351 2c2a167c Michael Niedermayer
    waveformatextensible =   (enc->channels > 2 && enc->channel_layout)
352
                          || enc->sample_rate > 48000
353
                          || av_get_bits_per_sample(enc->codec_id) > 16;
354 9d9f4119 Måns Rullgård
355 6e9f56c1 Ronald S. Bultje
    if (waveformatextensible) {
356
        put_le16(pb, 0xfffe);
357
    } else {
358 4bce3ba4 Ronald S. Bultje
        put_le16(pb, enc->codec_tag);
359 6e9f56c1 Ronald S. Bultje
    }
360 9d9f4119 Måns Rullgård
    put_le16(pb, enc->channels);
361
    put_le32(pb, enc->sample_rate);
362 235a51ad Baptiste Coudurier
    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
363 9d9f4119 Måns Rullgård
        bps = 0;
364 9df9b810 Daniel Verkamp
    } else if (enc->codec_id == CODEC_ID_ADPCM_G726) {
365 9d9f4119 Måns Rullgård
        bps = 4;
366
    } else {
367 24b8aa84 Baptiste Coudurier
        if (!(bps = av_get_bits_per_sample(enc->codec_id)))
368
            bps = 16; // default to 16
369 9d9f4119 Måns Rullgård
    }
370 dd1c8f3e Luca Abeni
    if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
371
        av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
372 9376710d Michael Niedermayer
    }
373 9d9f4119 Måns Rullgård
374 504530bf Carl Eugen Hoyos
    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
375 755bfeab Diego Biurrun
        blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
376 9d9f4119 Måns Rullgård
        //blkalign = 144 * enc->bit_rate/enc->sample_rate;
377 504530bf Carl Eugen Hoyos
    } else if (enc->codec_id == CODEC_ID_AC3) {
378
            blkalign = 3840; //maximum bytes per frame
379 9d9f4119 Måns Rullgård
    } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
380
        blkalign = 1;
381
    } else if (enc->block_align != 0) { /* specified by the codec */
382
        blkalign = enc->block_align;
383
    } else
384
        blkalign = enc->channels*bps >> 3;
385
    if (enc->codec_id == CODEC_ID_PCM_U8 ||
386
        enc->codec_id == CODEC_ID_PCM_S24LE ||
387
        enc->codec_id == CODEC_ID_PCM_S32LE ||
388 57406d8e Peter Ross
        enc->codec_id == CODEC_ID_PCM_F32LE ||
389
        enc->codec_id == CODEC_ID_PCM_F64LE ||
390 9d9f4119 Måns Rullgård
        enc->codec_id == CODEC_ID_PCM_S16LE) {
391
        bytespersec = enc->sample_rate * blkalign;
392
    } else {
393
        bytespersec = enc->bit_rate / 8;
394
    }
395
    put_le32(pb, bytespersec); /* bytes per second */
396
    put_le16(pb, blkalign); /* block align */
397
    put_le16(pb, bps); /* bits per sample */
398
    if (enc->codec_id == CODEC_ID_MP3) {
399
        hdrsize += 12;
400 6e9f56c1 Ronald S. Bultje
        bytestream_put_le16(&riff_extradata, 1);    /* wID */
401
        bytestream_put_le32(&riff_extradata, 2);    /* fdwFlags */
402
        bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
403
        bytestream_put_le16(&riff_extradata, 1);    /* nFramesPerBlock */
404
        bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
405 9d9f4119 Måns Rullgård
    } else if (enc->codec_id == CODEC_ID_MP2) {
406
        hdrsize += 22;
407 6e9f56c1 Ronald S. Bultje
        bytestream_put_le16(&riff_extradata, 2);                          /* fwHeadLayer */
408
        bytestream_put_le32(&riff_extradata, enc->bit_rate);              /* dwHeadBitrate */
409
        bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
410
        bytestream_put_le16(&riff_extradata, 0);                          /* fwHeadModeExt */
411
        bytestream_put_le16(&riff_extradata, 1);                          /* wHeadEmphasis */
412
        bytestream_put_le16(&riff_extradata, 16);                         /* fwHeadFlags */
413
        bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSLow */
414
        bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSHigh */
415 c81604f8 Zhentan Feng
    } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
416 9d9f4119 Måns Rullgård
        hdrsize += 2;
417 6e9f56c1 Ronald S. Bultje
        bytestream_put_le16(&riff_extradata, enc->frame_size); /* wSamplesPerBlock */
418 9d9f4119 Måns Rullgård
    } else if(enc->extradata_size){
419 6e9f56c1 Ronald S. Bultje
        riff_extradata_start= enc->extradata;
420
        riff_extradata= enc->extradata + enc->extradata_size;
421 9d9f4119 Måns Rullgård
        hdrsize += enc->extradata_size;
422 6e9f56c1 Ronald S. Bultje
    } else if (!waveformatextensible){
423
        hdrsize -= 2;
424
    }
425
    if(waveformatextensible) {                                    /* write WAVEFORMATEXTENSIBLE extensions */
426
        hdrsize += 22;
427
        put_le16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
428
        put_le16(pb, enc->bits_per_coded_sample);                 /* ValidBitsPerSample || SamplesPerBlock || Reserved */
429
        put_le32(pb, enc->channel_layout);                        /* dwChannelMask */
430
        put_le32(pb, enc->codec_tag);                             /* GUID + next 3 */
431
        put_le32(pb, 0x00100000);
432
        put_le32(pb, 0xAA000080);
433
        put_le32(pb, 0x719B3800);
434
    } else if(riff_extradata - riff_extradata_start) {
435
        put_le16(pb, riff_extradata - riff_extradata_start);
436
    }
437
    put_buffer(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
438 4bce3ba4 Ronald S. Bultje
    if(hdrsize&1){
439
        hdrsize++;
440
        put_byte(pb, 0);
441
    }
442 9d9f4119 Måns Rullgård
443
    return hdrsize;
444
}
445
446
/* BITMAPINFOHEADER header */
447 1a40491e Daniel Verkamp
void ff_put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
448 9d9f4119 Måns Rullgård
{
449
    put_le32(pb, 40 + enc->extradata_size); /* size */
450
    put_le32(pb, enc->width);
451 31f2616d Michael Niedermayer
    //We always store RGB TopDown
452
    put_le32(pb, enc->codec_tag ? enc->height : -enc->height);
453 9d9f4119 Måns Rullgård
    put_le16(pb, 1); /* planes */
454
455 dd1c8f3e Luca Abeni
    put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
456 9d9f4119 Måns Rullgård
    /* compression type */
457 bb85077f Michael Niedermayer
    put_le32(pb, enc->codec_tag);
458 9d9f4119 Måns Rullgård
    put_le32(pb, enc->width * enc->height * 3);
459
    put_le32(pb, 0);
460
    put_le32(pb, 0);
461
    put_le32(pb, 0);
462
    put_le32(pb, 0);
463
464
    put_buffer(pb, enc->extradata, enc->extradata_size);
465
466 63100f58 Anton Khirnov
    if (!for_asf && enc->extradata_size & 1)
467 9d9f4119 Måns Rullgård
        put_byte(pb, 0);
468
}
469
#endif //CONFIG_MUXERS
470
471 b250f9c6 Aurelien Jacobs
#if CONFIG_DEMUXERS
472 9d9f4119 Måns Rullgård
/* We could be given one of the three possible structures here:
473
 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
474
 * is an expansion of the previous one with the fields added
475
 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
476
 * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
477
 * an openended structure.
478
 */
479 1a40491e Daniel Verkamp
void ff_get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
480 9d9f4119 Måns Rullgård
{
481
    int id;
482
483
    id = get_le16(pb);
484 72415b2a Stefano Sabatini
    codec->codec_type = AVMEDIA_TYPE_AUDIO;
485 9d9f4119 Måns Rullgård
    codec->codec_tag = id;
486
    codec->channels = get_le16(pb);
487
    codec->sample_rate = get_le32(pb);
488
    codec->bit_rate = get_le32(pb) * 8;
489
    codec->block_align = get_le16(pb);
490
    if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
491 dd1c8f3e Luca Abeni
        codec->bits_per_coded_sample = 8;
492 9d9f4119 Måns Rullgård
    }else
493 dd1c8f3e Luca Abeni
        codec->bits_per_coded_sample = get_le16(pb);
494 72fd40bd Baptiste Coudurier
    if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */
495
        int cbSize = get_le16(pb); /* cbSize */
496
        size -= 18;
497
        cbSize = FFMIN(size, cbSize);
498
        if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
499 dd1c8f3e Luca Abeni
            codec->bits_per_coded_sample = get_le16(pb);
500 4fd71a0e Peter Ross
            codec->channel_layout = get_le32(pb); /* dwChannelMask */
501 72fd40bd Baptiste Coudurier
            id = get_le32(pb); /* 4 first bytes of GUID */
502
            url_fskip(pb, 12); /* skip end of GUID */
503
            cbSize -= 22;
504
            size -= 22;
505
        }
506
        codec->extradata_size = cbSize;
507
        if (cbSize > 0) {
508 9d9f4119 Måns Rullgård
            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
509
            get_buffer(pb, codec->extradata, codec->extradata_size);
510 72fd40bd Baptiste Coudurier
            size -= cbSize;
511
        }
512 9d9f4119 Måns Rullgård
513
        /* It is possible for the chunk to contain garbage at the end */
514 72fd40bd Baptiste Coudurier
        if (size > 0)
515
            url_fskip(pb, size);
516 9d9f4119 Måns Rullgård
    }
517 1a40491e Daniel Verkamp
    codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
518 9d9f4119 Måns Rullgård
}
519
520
521 1a40491e Daniel Verkamp
enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps)
522 9d9f4119 Måns Rullgård
{
523 9f2ace74 Carl Eugen Hoyos
    enum CodecID id;
524 1a40491e Daniel Verkamp
    id = ff_codec_get_id(ff_codec_wav_tags, tag);
525 9d9f4119 Måns Rullgård
    if (id <= 0)
526
        return id;
527
    /* handle specific u8 codec */
528
    if (id == CODEC_ID_PCM_S16LE && bps == 8)
529
        id = CODEC_ID_PCM_U8;
530
    if (id == CODEC_ID_PCM_S16LE && bps == 24)
531
        id = CODEC_ID_PCM_S24LE;
532
    if (id == CODEC_ID_PCM_S16LE && bps == 32)
533
        id = CODEC_ID_PCM_S32LE;
534 57406d8e Peter Ross
    if (id == CODEC_ID_PCM_F32LE && bps == 64)
535
        id = CODEC_ID_PCM_F64LE;
536 a11c2a2c Michael Niedermayer
    if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
537
        id = CODEC_ID_PCM_ZORK;
538 9d9f4119 Måns Rullgård
    return id;
539
}
540 773d892a Peter Ross
541
int ff_get_bmp_header(ByteIOContext *pb, AVStream *st)
542
{
543
    int tag1;
544
    get_le32(pb); /* size */
545
    st->codec->width = get_le32(pb);
546
    st->codec->height = (int32_t)get_le32(pb);
547
    get_le16(pb); /* planes */
548
    st->codec->bits_per_coded_sample= get_le16(pb); /* depth */
549
    tag1 = get_le32(pb);
550
    get_le32(pb); /* ImageSize */
551
    get_le32(pb); /* XPelsPerMeter */
552
    get_le32(pb); /* YPelsPerMeter */
553
    get_le32(pb); /* ClrUsed */
554
    get_le32(pb); /* ClrImportant */
555
    return tag1;
556
}
557 9d9f4119 Måns Rullgård
#endif // CONFIG_DEMUXERS
558
559
void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
560
{
561
    int gcd;
562
563
    *au_ssize= stream->block_align;
564
    if(stream->frame_size && stream->sample_rate){
565
        *au_scale=stream->frame_size;
566
        *au_rate= stream->sample_rate;
567 72415b2a Stefano Sabatini
    }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
568
             stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
569 9d9f4119 Måns Rullgård
        *au_scale= stream->time_base.num;
570
        *au_rate = stream->time_base.den;
571
    }else{
572
        *au_scale= stream->block_align ? stream->block_align*8 : 8;
573 a7805e29 Michael Niedermayer
        *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
574 9d9f4119 Måns Rullgård
    }
575 9ce6c138 Aurelien Jacobs
    gcd= av_gcd(*au_scale, *au_rate);
576 9d9f4119 Måns Rullgård
    *au_scale /= gcd;
577
    *au_rate /= gcd;
578
}