Consistently rename variables denoting regression reference file(s)
[libav.git] / libavformat / riff.c
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1/*
2 * RIFF codec tags
406792e7 3 * Copyright (c) 2000 Fabrice Bellard
9d9f4119 4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
9d9f4119 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
245976da 22#include "libavcodec/avcodec.h"
9d9f4119 23#include "avformat.h"
9d9f4119 24#include "riff.h"
6e9f56c1 25#include "libavcodec/bytestream.h"
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26
27/* Note: when encoding, the first matching tag is used, so order is
28 important if multiple tags possible for a given codec. */
7caf0cc6 29const AVCodecTag codec_bmp_tags[] = {
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30 { 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') },
ab0b2e55 36 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
26e8d342 37 { CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
d7c6552c 38 { CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
26e8d342 39 { CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
62d6f73e 40 { CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
5aef8462 41 { CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
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42 { 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') },
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45 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
46 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
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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') },
36b0782e 53 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
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54 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
55 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
56 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
57 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
58 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
59 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
ab0b2e55 60 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
1b46683c 61 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
26ae363e 62 { CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
4a49a5fd 63 { CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
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64 { CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
65 { CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
66 { CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
67 { CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
68 { CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
69 { CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
70 { CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
b8cf645b 71 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
26e8d342 72 { CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
62d6f73e 73 { CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
41b0534a 74 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
4a49a5fd 75 { CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
5823e4b8 76 { CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
76af2edc 77 { CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
52837498 78 { CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
3596f4e0 79 { CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
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80 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
81 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
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82 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
83 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
84 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
85 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
4a49a5fd 86 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
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87 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
88 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
89 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
ab0b2e55 90 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
ab0b2e55 91 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
ab0b2e55 92 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
26e8d342 93 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
ab0b2e55 94 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
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95 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
96 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
97 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
f9928b7e 98 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
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99 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
100 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
101 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
102 { CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
13b47b40 103 { CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
26e8d342 104 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
c20a305b 105 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
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106 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
107 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
108 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
109 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
110 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
26e8d342 111 { CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
ab0b2e55 112 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
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113 { CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
114 { CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
bc7ea1e5 115 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
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116 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
117 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
6cffaea8 118 { CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
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119 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
120 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
26e8d342 121 { CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
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122 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
123 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
124 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
125 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
126 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
127 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
128 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
65fec2d9 129 { CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
a9cf309b 130 { CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
ed0879ed 131 { CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
54f8abde 132 { CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
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133 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
134 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
135 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
36b0782e 136 { CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
fc3fc029 137 { CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
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138 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
139 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
140 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
141 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
142 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
143 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
144 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
145 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
71b0654c 146 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
9c4e266c 147 { CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
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148 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
149 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
150 { CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
151 { CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
152 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
153 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
154 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
155 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
156 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
157 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
158 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
159 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
160 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
161 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
162 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
e2260faa 163 { CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
ab0b2e55 164 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
36b0782e 165 { CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
b30cb420 166 { CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
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167 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
168 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
169 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
170 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
171 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
172 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
173 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
174 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
bf23f6dc 175 { CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
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176 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
177 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
178 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
179 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
180 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
181 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
182 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
183 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
184 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
185 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
186 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
187 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
188 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
189 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
190 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
191 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
192 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
193 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
194 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
195 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
196 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
197 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
198 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
199 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
200 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
201 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
202 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
203 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
204 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
205 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
206 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
f86cd761 207 { CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
0dccbba0 208 { CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
ab0b2e55 209 { CODEC_ID_CLJR, MKTAG('c', 'l', 'j', 'r') },
eb64714c 210 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
65fec2d9 211 { CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
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212 { CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
213 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
e80c73b3 214 { CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
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215 { CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
216 { CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
94d3d6a4 217 { CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
ab0b2e55 218 { CODEC_ID_NONE, 0 }
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219};
220
7caf0cc6 221const AVCodecTag codec_wav_tags[] = {
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222 { CODEC_ID_PCM_S16LE, 0x0001 },
223 { CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
224 { CODEC_ID_PCM_S24LE, 0x0001 },
225 { CODEC_ID_PCM_S32LE, 0x0001 },
226 { CODEC_ID_ADPCM_MS, 0x0002 },
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227 { CODEC_ID_PCM_F32LE, 0x0003 },
228 { CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
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229 { CODEC_ID_PCM_ALAW, 0x0006 },
230 { CODEC_ID_PCM_MULAW, 0x0007 },
231 { CODEC_ID_WMAVOICE, 0x000A },
232 { CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
4e0e6888 233 { CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
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234 { CODEC_ID_ADPCM_YAMAHA, 0x0020 },
235 { CODEC_ID_TRUESPEECH, 0x0022 },
236 { CODEC_ID_GSM_MS, 0x0031 },
237 { CODEC_ID_ADPCM_G726, 0x0045 },
238 { CODEC_ID_MP2, 0x0050 },
239 { CODEC_ID_MP3, 0x0055 },
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240 { CODEC_ID_AMR_NB, 0x0057 },
241 { CODEC_ID_AMR_WB, 0x0058 },
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242 { CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
243 { CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
4becee23 244 { CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
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245 { CODEC_ID_VOXWARE, 0x0075 },
246 { CODEC_ID_AAC, 0x00ff },
faeedbbb 247 { CODEC_ID_SIPR, 0x0130 },
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248 { CODEC_ID_WMAV1, 0x0160 },
249 { CODEC_ID_WMAV2, 0x0161 },
250 { CODEC_ID_WMAPRO, 0x0162 },
800b9c24 251 { CODEC_ID_WMALOSSLESS, 0x0163 },
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252 { CODEC_ID_ADPCM_CT, 0x0200 },
253 { CODEC_ID_ATRAC3, 0x0270 },
254 { CODEC_ID_IMC, 0x0401 },
255 { CODEC_ID_AC3, 0x2000 },
256 { CODEC_ID_DTS, 0x2001 },
257 { CODEC_ID_SONIC, 0x2048 },
258 { CODEC_ID_SONIC_LS, 0x2048 },
8e6e9bac 259 { CODEC_ID_PCM_MULAW, 0x6c75 },
8af9090f 260 { CODEC_ID_AAC, 0x706d },
6cffaea8 261 { CODEC_ID_AAC, 0x4143 },
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262 { CODEC_ID_FLAC, 0xF1AC },
263 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
264 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
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265
266 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
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267 // for NuppelVideo (nuv.c)
268 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
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269 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
270 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
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271 { 0, 0 },
272};
273
b250f9c6 274#if CONFIG_MUXERS
bc5c918e 275int64_t start_tag(ByteIOContext *pb, const char *tag)
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276{
277 put_tag(pb, tag);
278 put_le32(pb, 0);
279 return url_ftell(pb);
280}
281
bc5c918e 282void end_tag(ByteIOContext *pb, int64_t start)
9d9f4119 283{
bc5c918e 284 int64_t pos;
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285
286 pos = url_ftell(pb);
287 url_fseek(pb, start - 4, SEEK_SET);
288 put_le32(pb, (uint32_t)(pos - start));
289 url_fseek(pb, pos, SEEK_SET);
290}
291
292/* WAVEFORMATEX header */
293/* returns the size or -1 on error */
294int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
295{
296 int bps, blkalign, bytespersec;
297 int hdrsize = 18;
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298 int waveformatextensible;
299 uint8_t temp[256];
300 uint8_t *riff_extradata= temp;
301 uint8_t *riff_extradata_start= temp;
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302
303 if(!enc->codec_tag || enc->codec_tag > 0xffff)
9d9f4119 304 return -1;
6e9f56c1 305 waveformatextensible = enc->channels > 2 && enc->channel_layout;
9d9f4119 306
6e9f56c1
RB
307 if (waveformatextensible) {
308 put_le16(pb, 0xfffe);
309 } else {
4bce3ba4 310 put_le16(pb, enc->codec_tag);
6e9f56c1 311 }
9d9f4119
MR
312 put_le16(pb, enc->channels);
313 put_le32(pb, enc->sample_rate);
235a51ad 314 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
9d9f4119
MR
315 bps = 0;
316 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
317 bps = 4;
9d9f4119 318 } else {
24b8aa84
BC
319 if (!(bps = av_get_bits_per_sample(enc->codec_id)))
320 bps = 16; // default to 16
9d9f4119 321 }
dd1c8f3e
LA
322 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
323 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 324 }
9d9f4119 325
52cf3954 326 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_AC3) {
755bfeab 327 blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
9d9f4119
MR
328 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
329 } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
330 blkalign = 1;
331 } else if (enc->block_align != 0) { /* specified by the codec */
332 blkalign = enc->block_align;
333 } else
334 blkalign = enc->channels*bps >> 3;
335 if (enc->codec_id == CODEC_ID_PCM_U8 ||
336 enc->codec_id == CODEC_ID_PCM_S24LE ||
337 enc->codec_id == CODEC_ID_PCM_S32LE ||
57406d8e
PR
338 enc->codec_id == CODEC_ID_PCM_F32LE ||
339 enc->codec_id == CODEC_ID_PCM_F64LE ||
9d9f4119
MR
340 enc->codec_id == CODEC_ID_PCM_S16LE) {
341 bytespersec = enc->sample_rate * blkalign;
342 } else {
343 bytespersec = enc->bit_rate / 8;
344 }
345 put_le32(pb, bytespersec); /* bytes per second */
346 put_le16(pb, blkalign); /* block align */
347 put_le16(pb, bps); /* bits per sample */
348 if (enc->codec_id == CODEC_ID_MP3) {
9d9f4119 349 hdrsize += 12;
6e9f56c1
RB
350 bytestream_put_le16(&riff_extradata, 1); /* wID */
351 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
352 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
353 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
354 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
9d9f4119 355 } else if (enc->codec_id == CODEC_ID_MP2) {
9d9f4119 356 hdrsize += 22;
6e9f56c1
RB
357 bytestream_put_le16(&riff_extradata, 2); /* fwHeadLayer */
358 bytestream_put_le32(&riff_extradata, enc->bit_rate); /* dwHeadBitrate */
359 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
360 bytestream_put_le16(&riff_extradata, 0); /* fwHeadModeExt */
361 bytestream_put_le16(&riff_extradata, 1); /* wHeadEmphasis */
362 bytestream_put_le16(&riff_extradata, 16); /* fwHeadFlags */
363 bytestream_put_le32(&riff_extradata, 0); /* dwPTSLow */
364 bytestream_put_le32(&riff_extradata, 0); /* dwPTSHigh */
c81604f8 365 } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
9d9f4119 366 hdrsize += 2;
6e9f56c1 367 bytestream_put_le16(&riff_extradata, enc->frame_size); /* wSamplesPerBlock */
9d9f4119 368 } else if(enc->extradata_size){
6e9f56c1
RB
369 riff_extradata_start= enc->extradata;
370 riff_extradata= enc->extradata + enc->extradata_size;
9d9f4119 371 hdrsize += enc->extradata_size;
6e9f56c1
RB
372 } else if (!waveformatextensible){
373 hdrsize -= 2;
374 }
375 if(waveformatextensible) { /* write WAVEFORMATEXTENSIBLE extensions */
376 hdrsize += 22;
377 put_le16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
378 put_le16(pb, enc->bits_per_coded_sample); /* ValidBitsPerSample || SamplesPerBlock || Reserved */
379 put_le32(pb, enc->channel_layout); /* dwChannelMask */
380 put_le32(pb, enc->codec_tag); /* GUID + next 3 */
381 put_le32(pb, 0x00100000);
382 put_le32(pb, 0xAA000080);
383 put_le32(pb, 0x719B3800);
384 } else if(riff_extradata - riff_extradata_start) {
385 put_le16(pb, riff_extradata - riff_extradata_start);
386 }
387 put_buffer(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
4bce3ba4
RB
388 if(hdrsize&1){
389 hdrsize++;
390 put_byte(pb, 0);
391 }
9d9f4119
MR
392
393 return hdrsize;
394}
395
396/* BITMAPINFOHEADER header */
7caf0cc6 397void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
9d9f4119
MR
398{
399 put_le32(pb, 40 + enc->extradata_size); /* size */
400 put_le32(pb, enc->width);
31f2616d
MN
401 //We always store RGB TopDown
402 put_le32(pb, enc->codec_tag ? enc->height : -enc->height);
9d9f4119
MR
403 put_le16(pb, 1); /* planes */
404
dd1c8f3e 405 put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
9d9f4119 406 /* compression type */
bb85077f 407 put_le32(pb, enc->codec_tag);
9d9f4119
MR
408 put_le32(pb, enc->width * enc->height * 3);
409 put_le32(pb, 0);
410 put_le32(pb, 0);
411 put_le32(pb, 0);
412 put_le32(pb, 0);
413
414 put_buffer(pb, enc->extradata, enc->extradata_size);
415
416 if (enc->extradata_size & 1)
417 put_byte(pb, 0);
418}
419#endif //CONFIG_MUXERS
420
b250f9c6 421#if CONFIG_DEMUXERS
9d9f4119
MR
422/* We could be given one of the three possible structures here:
423 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
424 * is an expansion of the previous one with the fields added
425 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
426 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
427 * an openended structure.
428 */
429void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
430{
431 int id;
432
433 id = get_le16(pb);
434 codec->codec_type = CODEC_TYPE_AUDIO;
435 codec->codec_tag = id;
436 codec->channels = get_le16(pb);
437 codec->sample_rate = get_le32(pb);
438 codec->bit_rate = get_le32(pb) * 8;
439 codec->block_align = get_le16(pb);
440 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
dd1c8f3e 441 codec->bits_per_coded_sample = 8;
9d9f4119 442 }else
dd1c8f3e 443 codec->bits_per_coded_sample = get_le16(pb);
72fd40bd
BC
444 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
445 int cbSize = get_le16(pb); /* cbSize */
446 size -= 18;
447 cbSize = FFMIN(size, cbSize);
448 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
dd1c8f3e 449 codec->bits_per_coded_sample = get_le16(pb);
4fd71a0e 450 codec->channel_layout = get_le32(pb); /* dwChannelMask */
72fd40bd
BC
451 id = get_le32(pb); /* 4 first bytes of GUID */
452 url_fskip(pb, 12); /* skip end of GUID */
453 cbSize -= 22;
454 size -= 22;
455 }
456 codec->extradata_size = cbSize;
457 if (cbSize > 0) {
9d9f4119
MR
458 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
459 get_buffer(pb, codec->extradata, codec->extradata_size);
72fd40bd
BC
460 size -= cbSize;
461 }
9d9f4119
MR
462
463 /* It is possible for the chunk to contain garbage at the end */
72fd40bd
BC
464 if (size > 0)
465 url_fskip(pb, size);
9d9f4119 466 }
dd1c8f3e 467 codec->codec_id = wav_codec_get_id(id, codec->bits_per_coded_sample);
9d9f4119
MR
468}
469
470
9f2ace74 471enum CodecID wav_codec_get_id(unsigned int tag, int bps)
9d9f4119 472{
9f2ace74 473 enum CodecID id;
9d9f4119
MR
474 id = codec_get_id(codec_wav_tags, tag);
475 if (id <= 0)
476 return id;
477 /* handle specific u8 codec */
478 if (id == CODEC_ID_PCM_S16LE && bps == 8)
479 id = CODEC_ID_PCM_U8;
480 if (id == CODEC_ID_PCM_S16LE && bps == 24)
481 id = CODEC_ID_PCM_S24LE;
482 if (id == CODEC_ID_PCM_S16LE && bps == 32)
483 id = CODEC_ID_PCM_S32LE;
57406d8e
PR
484 if (id == CODEC_ID_PCM_F32LE && bps == 64)
485 id = CODEC_ID_PCM_F64LE;
a11c2a2c
MN
486 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
487 id = CODEC_ID_PCM_ZORK;
9d9f4119
MR
488 return id;
489}
490#endif // CONFIG_DEMUXERS
491
492void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
493{
494 int gcd;
495
496 *au_ssize= stream->block_align;
497 if(stream->frame_size && stream->sample_rate){
498 *au_scale=stream->frame_size;
499 *au_rate= stream->sample_rate;
500 }else if(stream->codec_type == CODEC_TYPE_VIDEO){
501 *au_scale= stream->time_base.num;
502 *au_rate = stream->time_base.den;
503 }else{
504 *au_scale= stream->block_align ? stream->block_align*8 : 8;
a7805e29 505 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
9d9f4119 506 }
9ce6c138 507 gcd= av_gcd(*au_scale, *au_rate);
9d9f4119
MR
508 *au_scale /= gcd;
509 *au_rate /= gcd;
510}