avformat/dv: K&R formatting cosmetics
[libav.git] / libavformat / riff.c
CommitLineData
9d9f4119 1/*
71e92414 2 * RIFF common functions and data
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"
9d9f4119 28
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29/* Note: When encoding, the first matching tag is used, so order is
30 * important if multiple tags are possible for a given codec. */
1a40491e 31const AVCodecTag ff_codec_bmp_tags[] = {
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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') },
1c88617b 47 { AV_CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* Intel H.263 */
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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') },
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57 /* some broken AVIs use this */
58 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) },
59 /* some broken AVIs use this */
60 { AV_CODEC_ID_MPEG4, MKTAG('Z', 'M', 'P', '4') },
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61 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
62 { AV_CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
63 { AV_CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
64 { AV_CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
65 { AV_CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
66 { AV_CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
67 { AV_CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
68 { AV_CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
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69 /* WaWv MPEG-4 Video Codec */
70 { AV_CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') },
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71 { AV_CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
72 { AV_CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
73 { AV_CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
74 { AV_CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
75 { AV_CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
76 { AV_CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
77 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
78 { AV_CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
79 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
80 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
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81 /* flipped video */
82 { AV_CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') },
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83 { AV_CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
84 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
85 { AV_CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
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86 /* Ephv MPEG-4 */
87 { AV_CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') },
36ef5369 88 { AV_CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
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89 /* Divio MPEG-4 */
90 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') },
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91 { AV_CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
92 { AV_CODEC_ID_MPEG4, MKTAG('V', 'S', 'P', 'X') },
93 { AV_CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
94 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
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95 /* Samsung SHR-6040 */
96 { AV_CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') },
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97 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'X') },
98 { AV_CODEC_ID_MPEG4, MKTAG('D', 'r', 'e', 'X') },
99 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
100 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
101 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
102 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
103 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
104 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
105 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
106 { AV_CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
107 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
108 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
109 { AV_CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
110 { AV_CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
111 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
112 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
113 { AV_CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
114 { AV_CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
115 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
116 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
117 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
118 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
119 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
120 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
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121 /* Canopus DV */
122 { AV_CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') },
123 /* Canopus DV */
124 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') },
125 /* Canopus DV */
126 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') },
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127 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
128 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 's') },
129 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
130 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
131 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
132 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
133 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
134 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
135 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
136 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
137 { AV_CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
138 { AV_CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
139 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
140 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
141 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
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142 /* Lead MPEG-2 in AVI */
143 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') },
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144 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
145 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
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146 /* Matrox MPEG-2 intra-only */
147 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') },
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148 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', 'v') },
149 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
150 { AV_CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
151 { AV_CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
152 { AV_CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') },
153 { AV_CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
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154 /* Pegasus lossless JPEG */
155 { AV_CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') },
156 /* JPEG-LS custom FOURCC for AVI - encoder */
157 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') },
36ef5369 158 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
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159 /* JPEG-LS custom FOURCC for AVI - decoder */
160 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') },
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161 { AV_CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
162 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
163 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
164 { AV_CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
165 { AV_CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
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166 /* SL M-JPEG */
167 { AV_CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') },
168 /* Creative Webcam JPEG */
169 { AV_CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') },
170 /* Intel JPEG Library Video Codec */
171 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'L', 'V') },
172 /* Midvid JPEG Video Codec */
173 { AV_CODEC_ID_MJPEG, MKTAG('M', 'V', 'J', 'P') },
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174 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '1') },
175 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '2') },
176 { AV_CODEC_ID_MJPEG, MKTAG('M', 'T', 'S', 'J') },
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177 /* Paradigm Matrix M-JPEG Codec */
178 { AV_CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') },
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179 { AV_CODEC_ID_MJPEG, MKTAG('M', 'M', 'J', 'P') },
180 { AV_CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
181 { AV_CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
182 { AV_CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
183 { AV_CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
184 { AV_CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
185 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
186 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
187 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
188 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', '4', '2', '2') },
189 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'N', 'V') },
190 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'V') },
191 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'Y') },
192 { AV_CODEC_ID_RAWVIDEO, MKTAG('u', 'y', 'v', '1') },
193 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'V', 'u', '1') },
194 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') },
195 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') },
196 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') },
197 { AV_CODEC_ID_RAWVIDEO, MKTAG('P', '4', '2', '2') },
198 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
199 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '6') },
200 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '2', '4') },
201 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
202 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'Y', 'U', 'Y') },
203 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
204 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
205 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', ' ', ' ') },
206 { AV_CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
207 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
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208 /* SoftLab-NSK VideoTizer */
209 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') },
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210 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', '1') },
211 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '1', '2') },
212 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '2', '1') },
213 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', 'B') },
214 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', 'B') },
215 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'V', '9') },
216 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
217 { AV_CODEC_ID_RAWVIDEO, MKTAG('a', 'u', 'v', '2') },
218 { AV_CODEC_ID_FRWU, MKTAG('F', 'R', 'W', 'U') },
219 { AV_CODEC_ID_R10K, MKTAG('R', '1', '0', 'k') },
220 { AV_CODEC_ID_R210, MKTAG('r', '2', '1', '0') },
221 { AV_CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
222 { AV_CODEC_ID_V410, MKTAG('v', '4', '1', '0') },
223 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
224 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
225 { AV_CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
226 { AV_CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
227 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
228 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
229 { AV_CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
230 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
231 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
232 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
233 { AV_CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
234 { AV_CODEC_ID_VP6F, MKTAG('F', 'L', 'V', '4') },
235 { AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
236 { AV_CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
237 { AV_CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
238 { AV_CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
239 { AV_CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
240 { AV_CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
241 { AV_CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
242 { AV_CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
243 { AV_CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
244 { AV_CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
245 { AV_CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
246 { AV_CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
247 { AV_CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
248 { AV_CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
249 { AV_CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
250 { AV_CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
251 { AV_CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
252 { AV_CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
253 { AV_CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
254 { AV_CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
255 { AV_CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
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256 { AV_CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
257 { AV_CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
258 { AV_CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
259 { AV_CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
260 { AV_CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
261 { AV_CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
262 { AV_CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
263 { AV_CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
264 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
265 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
266 { AV_CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
267 { AV_CODEC_ID_WMV3IMAGE, MKTAG('W', 'M', 'V', 'P') },
268 { AV_CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
269 { AV_CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
270 { AV_CODEC_ID_VC1IMAGE, MKTAG('W', 'V', 'P', '2') },
271 { AV_CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
272 { AV_CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
273 { AV_CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
274 { AV_CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
275 { AV_CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
276 { AV_CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
277 { AV_CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
278 { AV_CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
279 { AV_CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
280 { AV_CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
281 { AV_CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
282 { AV_CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') },
283 { AV_CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
284 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'C') },
285 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'K') },
286 { AV_CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
287 { AV_CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
288 { AV_CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
289 { AV_CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
290 { AV_CODEC_ID_CLJR, MKTAG('C', 'L', 'J', 'R') },
291 { AV_CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
292 { AV_CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
293 { AV_CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
294 { AV_CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
295 { AV_CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
296 { AV_CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
297 { AV_CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
298 { AV_CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
299 { AV_CODEC_ID_KGV1, MKTAG('K', 'G', 'V', '1') },
300 { AV_CODEC_ID_LAGARITH, MKTAG('L', 'A', 'G', 'S') },
301 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'A') },
302 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'G') },
303 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '0') },
304 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '2') },
2578f1ef
YN
305 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'H', '0') },
306 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'H', '2') },
36ef5369
AK
307 { AV_CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
308 { AV_CODEC_ID_DXTORY, MKTAG('x', 't', 'o', 'r') },
309 { AV_CODEC_ID_ZEROCODEC, MKTAG('Z', 'E', 'C', 'O') },
310 { AV_CODEC_ID_MSS1, MKTAG('M', 'S', 'S', '1') },
311 { AV_CODEC_ID_MSA1, MKTAG('M', 'S', 'A', '1') },
312 { AV_CODEC_ID_TSCC2, MKTAG('T', 'S', 'C', '2') },
313 { AV_CODEC_ID_MTS2, MKTAG('M', 'T', 'S', '2') },
314 { AV_CODEC_ID_CLLC, MKTAG('C', 'L', 'L', 'C') },
ee769c6a 315 { AV_CODEC_ID_MSS2, MKTAG('M', 'S', 'S', '2') },
1c56cdad 316 { AV_CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
2d66a58c
KS
317 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '2') },
318 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '3') },
319 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '4') },
36ef5369 320 { AV_CODEC_ID_NONE, 0 }
9d9f4119
MR
321};
322
1a40491e 323const AVCodecTag ff_codec_wav_tags[] = {
36ef5369 324 { AV_CODEC_ID_PCM_S16LE, 0x0001 },
1c88617b
LB
325 /* must come after s16le in this list */
326 { AV_CODEC_ID_PCM_U8, 0x0001 },
36ef5369
AK
327 { AV_CODEC_ID_PCM_S24LE, 0x0001 },
328 { AV_CODEC_ID_PCM_S32LE, 0x0001 },
329 { AV_CODEC_ID_ADPCM_MS, 0x0002 },
330 { AV_CODEC_ID_PCM_F32LE, 0x0003 },
1c88617b
LB
331 /* must come after f32le in this list */
332 { AV_CODEC_ID_PCM_F64LE, 0x0003 },
36ef5369
AK
333 { AV_CODEC_ID_PCM_ALAW, 0x0006 },
334 { AV_CODEC_ID_PCM_MULAW, 0x0007 },
335 { AV_CODEC_ID_WMAVOICE, 0x000A },
336 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
1c88617b
LB
337 /* must come after adpcm_ima_wav in this list */
338 { AV_CODEC_ID_PCM_ZORK, 0x0011 },
36ef5369
AK
339 { AV_CODEC_ID_ADPCM_YAMAHA, 0x0020 },
340 { AV_CODEC_ID_TRUESPEECH, 0x0022 },
341 { AV_CODEC_ID_GSM_MS, 0x0031 },
342 { AV_CODEC_ID_ADPCM_G726, 0x0045 },
343 { AV_CODEC_ID_MP2, 0x0050 },
344 { AV_CODEC_ID_MP3, 0x0055 },
345 { AV_CODEC_ID_AMR_NB, 0x0057 },
346 { AV_CODEC_ID_AMR_WB, 0x0058 },
1c88617b
LB
347 /* rogue format number */
348 { AV_CODEC_ID_ADPCM_IMA_DK4, 0x0061 },
349 /* rogue format number */
350 { AV_CODEC_ID_ADPCM_IMA_DK3, 0x0062 },
36ef5369
AK
351 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
352 { AV_CODEC_ID_VOXWARE, 0x0075 },
353 { AV_CODEC_ID_AAC, 0x00ff },
354 { AV_CODEC_ID_SIPR, 0x0130 },
355 { AV_CODEC_ID_WMAV1, 0x0160 },
356 { AV_CODEC_ID_WMAV2, 0x0161 },
357 { AV_CODEC_ID_WMAPRO, 0x0162 },
358 { AV_CODEC_ID_WMALOSSLESS, 0x0163 },
359 { AV_CODEC_ID_ADPCM_CT, 0x0200 },
360 { AV_CODEC_ID_ATRAC3, 0x0270 },
361 { AV_CODEC_ID_ADPCM_G722, 0x028F },
362 { AV_CODEC_ID_IMC, 0x0401 },
363 { AV_CODEC_ID_IAC, 0x0402 },
364 { AV_CODEC_ID_GSM_MS, 0x1500 },
365 { AV_CODEC_ID_TRUESPEECH, 0x1501 },
1c88617b
LB
366 /* ADTS AAC */
367 { AV_CODEC_ID_AAC, 0x1600 },
36ef5369
AK
368 { AV_CODEC_ID_AAC_LATM, 0x1602 },
369 { AV_CODEC_ID_AC3, 0x2000 },
370 { AV_CODEC_ID_DTS, 0x2001 },
371 { AV_CODEC_ID_PCM_MULAW, 0x6c75 },
372 { AV_CODEC_ID_AAC, 0x706d },
373 { AV_CODEC_ID_AAC, 0x4143 },
374 { AV_CODEC_ID_SPEEX, 0xA109 },
375 { AV_CODEC_ID_FLAC, 0xF1AC },
1c88617b
LB
376 { AV_CODEC_ID_ADPCM_SWF, ('S' << 8) + 'F' },
377 /* HACK/FIXME: Does Vorbis in WAV/AVI have an (in)official ID? */
378 { AV_CODEC_ID_VORBIS, ('V' << 8) + 'o' },
36ef5369 379 { AV_CODEC_ID_NONE, 0 },
9d9f4119
MR
380};
381
e5447826
PR
382const AVCodecGuid ff_codec_wav_guids[] = {
383 { AV_CODEC_ID_AC3, { 0x2C, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
516089d5 384 { AV_CODEC_ID_ATRAC3P, { 0xBF, 0xAA, 0x23, 0xE9, 0x58, 0xCB, 0x71, 0x44, 0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62 } },
e5447826
PR
385 { AV_CODEC_ID_EAC3, { 0xAF, 0x87, 0xFB, 0xA7, 0x02, 0x2D, 0xFB, 0x42, 0xA4, 0xD4, 0x05, 0xCD, 0x93, 0x84, 0x3B, 0xDD } },
386 { AV_CODEC_ID_MP2, { 0x2B, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
387 { AV_CODEC_ID_NONE }
388};
389
12bc2050 390const AVMetadataConv ff_riff_info_conv[] = {
1c88617b
LB
391 { "IART", "artist" },
392 { "ICMT", "comment" },
393 { "ICOP", "copyright" },
394 { "ICRD", "date" },
395 { "IGNR", "genre" },
396 { "ILNG", "language" },
397 { "INAM", "title" },
398 { "IPRD", "album" },
399 { "IPRT", "track" },
400 { "ISFT", "encoder" },
401 { "ITCH", "encoded_by" },
12bc2050
VV
402 { 0 },
403};
404
e5447826
PR
405enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
406{
407 int i;
408 for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++)
409 if (!ff_guidcmp(guids[i].guid, guid))
410 return guids[i].id;
411 return AV_CODEC_ID_NONE;
412}
413
508998f7
LB
414const struct AVCodecTag *avformat_get_riff_video_tags(void)
415{
416 return ff_codec_bmp_tags;
417}
418
419const struct AVCodecTag *avformat_get_riff_audio_tags(void)
420{
421 return ff_codec_wav_tags;
422}
423
b250f9c6 424#if CONFIG_MUXERS
ae628ec1 425int64_t ff_start_tag(AVIOContext *pb, const char *tag)
9d9f4119 426{
0abdb293 427 ffio_wfourcc(pb, tag);
77eb5504 428 avio_wl32(pb, 0);
a2704c97 429 return avio_tell(pb);
9d9f4119
MR
430}
431
ae628ec1 432void ff_end_tag(AVIOContext *pb, int64_t start)
9d9f4119 433{
bc5c918e 434 int64_t pos;
9d9f4119 435
a2704c97 436 pos = avio_tell(pb);
6b4aa5da 437 avio_seek(pb, start - 4, SEEK_SET);
77eb5504 438 avio_wl32(pb, (uint32_t)(pos - start));
6b4aa5da 439 avio_seek(pb, pos, SEEK_SET);
9d9f4119
MR
440}
441
442/* WAVEFORMATEX header */
443/* returns the size or -1 on error */
ae628ec1 444int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
9d9f4119 445{
c019070f 446 int bps, blkalign, bytespersec, frame_size;
9d9f4119 447 int hdrsize = 18;
6e9f56c1
RB
448 int waveformatextensible;
449 uint8_t temp[256];
1c88617b
LB
450 uint8_t *riff_extradata = temp;
451 uint8_t *riff_extradata_start = temp;
9d9f4119 452
1c88617b 453 if (!enc->codec_tag || enc->codec_tag > 0xffff)
9d9f4119 454 return -1;
c019070f
JR
455
456 /* We use the known constant frame size for the codec if known, otherwise
1c88617b
LB
457 * fall back on using AVCodecContext.frame_size, which is not as reliable
458 * for indicating packet duration. */
c019070f
JR
459 frame_size = av_get_audio_frame_duration(enc, 0);
460 if (!frame_size)
461 frame_size = enc->frame_size;
462
1c88617b
LB
463 waveformatextensible = (enc->channels > 2 && enc->channel_layout) ||
464 enc->sample_rate > 48000 ||
465 av_get_bits_per_sample(enc->codec_id) > 16;
9d9f4119 466
1c88617b 467 if (waveformatextensible)
77eb5504 468 avio_wl16(pb, 0xfffe);
1c88617b 469 else
77eb5504 470 avio_wl16(pb, enc->codec_tag);
1c88617b 471
77eb5504
AK
472 avio_wl16(pb, enc->channels);
473 avio_wl32(pb, enc->sample_rate);
1c88617b
LB
474 if (enc->codec_id == AV_CODEC_ID_MP2 ||
475 enc->codec_id == AV_CODEC_ID_MP3 ||
476 enc->codec_id == AV_CODEC_ID_GSM_MS) {
9d9f4119 477 bps = 0;
9d9f4119 478 } else {
6ac34eed
JR
479 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
480 if (enc->bits_per_coded_sample)
481 bps = enc->bits_per_coded_sample;
482 else
1c88617b 483 bps = 16; // default to 16
6ac34eed 484 }
9d9f4119 485 }
1c88617b
LB
486 if (bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample) {
487 av_log(enc, AV_LOG_WARNING,
488 "requested bits_per_coded_sample (%d) "
489 "and actually stored (%d) differ\n",
490 enc->bits_per_coded_sample, bps);
9376710d 491 }
9d9f4119 492
1c88617b
LB
493 if (enc->codec_id == AV_CODEC_ID_MP2 ||
494 enc->codec_id == AV_CODEC_ID_MP3) {
495 /* This is wrong, but it seems many demuxers do not work if this
496 * is set correctly. */
c019070f 497 blkalign = frame_size;
1c88617b 498 // blkalign = 144 * enc->bit_rate/enc->sample_rate;
36ef5369 499 } else if (enc->codec_id == AV_CODEC_ID_AC3) {
1c88617b 500 blkalign = 3840; /* maximum bytes per frame */
9d9f4119
MR
501 } else if (enc->block_align != 0) { /* specified by the codec */
502 blkalign = enc->block_align;
503 } else
6ac34eed 504 blkalign = bps * enc->channels / av_gcd(8, bps);
36ef5369
AK
505 if (enc->codec_id == AV_CODEC_ID_PCM_U8 ||
506 enc->codec_id == AV_CODEC_ID_PCM_S24LE ||
507 enc->codec_id == AV_CODEC_ID_PCM_S32LE ||
508 enc->codec_id == AV_CODEC_ID_PCM_F32LE ||
509 enc->codec_id == AV_CODEC_ID_PCM_F64LE ||
510 enc->codec_id == AV_CODEC_ID_PCM_S16LE) {
9d9f4119
MR
511 bytespersec = enc->sample_rate * blkalign;
512 } else {
513 bytespersec = enc->bit_rate / 8;
514 }
77eb5504 515 avio_wl32(pb, bytespersec); /* bytes per second */
1c88617b
LB
516 avio_wl16(pb, blkalign); /* block align */
517 avio_wl16(pb, bps); /* bits per sample */
36ef5369 518 if (enc->codec_id == AV_CODEC_ID_MP3) {
9d9f4119 519 hdrsize += 12;
6e9f56c1
RB
520 bytestream_put_le16(&riff_extradata, 1); /* wID */
521 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
522 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
523 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
524 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
36ef5369 525 } else if (enc->codec_id == AV_CODEC_ID_MP2) {
9d9f4119 526 hdrsize += 22;
1c88617b
LB
527 /* fwHeadLayer */
528 bytestream_put_le16(&riff_extradata, 2);
529 /* dwHeadBitrate */
530 bytestream_put_le32(&riff_extradata, enc->bit_rate);
531 /* fwHeadMode */
532 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8);
533 /* fwHeadModeExt */
534 bytestream_put_le16(&riff_extradata, 0);
535 /* wHeadEmphasis */
536 bytestream_put_le16(&riff_extradata, 1);
537 /* fwHeadFlags */
538 bytestream_put_le16(&riff_extradata, 16);
539 /* dwPTSLow */
540 bytestream_put_le32(&riff_extradata, 0);
541 /* dwPTSHigh */
542 bytestream_put_le32(&riff_extradata, 0);
543 } else if (enc->codec_id == AV_CODEC_ID_GSM_MS ||
544 enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
9d9f4119 545 hdrsize += 2;
1c88617b
LB
546 /* wSamplesPerBlock */
547 bytestream_put_le16(&riff_extradata, frame_size);
548 } else if (enc->extradata_size) {
549 riff_extradata_start = enc->extradata;
550 riff_extradata = enc->extradata + enc->extradata_size;
551 hdrsize += enc->extradata_size;
6e9f56c1 552 }
1c88617b
LB
553 /* write WAVEFORMATEXTENSIBLE extensions */
554 if (waveformatextensible) {
6e9f56c1 555 hdrsize += 22;
1c88617b
LB
556 /* 22 is WAVEFORMATEXTENSIBLE size */
557 avio_wl16(pb, riff_extradata - riff_extradata_start + 22);
558 /* ValidBitsPerSample || SamplesPerBlock || Reserved */
559 avio_wl16(pb, bps);
560 /* dwChannelMask */
561 avio_wl32(pb, enc->channel_layout);
562 /* GUID + next 3 */
563 avio_wl32(pb, enc->codec_tag);
77eb5504
AK
564 avio_wl32(pb, 0x00100000);
565 avio_wl32(pb, 0xAA000080);
566 avio_wl32(pb, 0x719B3800);
2c4e08d8
JB
567 } else {
568 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
6e9f56c1 569 }
77eb5504 570 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
1c88617b 571 if (hdrsize & 1) {
4bce3ba4 572 hdrsize++;
77eb5504 573 avio_w8(pb, 0);
4bce3ba4 574 }
9d9f4119
MR
575
576 return hdrsize;
577}
578
579/* BITMAPINFOHEADER header */
1c88617b
LB
580void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc,
581 const AVCodecTag *tags, int for_asf)
9d9f4119 582{
1c88617b
LB
583 /* size */
584 avio_wl32(pb, 40 + enc->extradata_size);
77eb5504 585 avio_wl32(pb, enc->width);
31f2616d 586 //We always store RGB TopDown
77eb5504 587 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
1c88617b
LB
588 /* planes */
589 avio_wl16(pb, 1);
590 /* depth */
591 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24);
9d9f4119 592 /* compression type */
77eb5504
AK
593 avio_wl32(pb, enc->codec_tag);
594 avio_wl32(pb, enc->width * enc->height * 3);
595 avio_wl32(pb, 0);
596 avio_wl32(pb, 0);
597 avio_wl32(pb, 0);
598 avio_wl32(pb, 0);
9d9f4119 599
77eb5504 600 avio_write(pb, enc->extradata, enc->extradata_size);
9d9f4119 601
63100f58 602 if (!for_asf && enc->extradata_size & 1)
77eb5504 603 avio_w8(pb, 0);
9d9f4119 604}
7b2121e7 605
1c88617b
LB
606void ff_parse_specific_params(AVCodecContext *stream, int *au_rate,
607 int *au_ssize, int *au_scale)
7b2121e7
DB
608{
609 int gcd;
610 int audio_frame_size;
611
612 /* We use the known constant frame size for the codec if known, otherwise
1c88617b
LB
613 * fall back on using AVCodecContext.frame_size, which is not as reliable
614 * for indicating packet duration. */
7b2121e7
DB
615 audio_frame_size = av_get_audio_frame_duration(stream, 0);
616 if (!audio_frame_size)
617 audio_frame_size = stream->frame_size;
618
1c88617b 619 *au_ssize = stream->block_align;
7b2121e7
DB
620 if (audio_frame_size && stream->sample_rate) {
621 *au_scale = audio_frame_size;
1c88617b
LB
622 *au_rate = stream->sample_rate;
623 } else if (stream->codec_type == AVMEDIA_TYPE_VIDEO ||
624 stream->codec_type == AVMEDIA_TYPE_DATA ||
625 stream->codec_type == AVMEDIA_TYPE_SUBTITLE) {
626 *au_scale = stream->time_base.num;
627 *au_rate = stream->time_base.den;
628 } else {
629 *au_scale = stream->block_align ? stream->block_align * 8 : 8;
630 *au_rate = stream->bit_rate ? stream->bit_rate :
631 8 * stream->sample_rate;
7b2121e7 632 }
1c88617b 633 gcd = av_gcd(*au_scale, *au_rate);
7b2121e7 634 *au_scale /= gcd;
1c88617b 635 *au_rate /= gcd;
7b2121e7
DB
636}
637
638void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
639{
640 int len = strlen(str);
641 if (len > 0) {
642 len++;
643 ffio_wfourcc(pb, tag);
644 avio_wl32(pb, len);
645 avio_put_str(pb, str);
646 if (len & 1)
647 avio_w8(pb, 0);
648 }
649}
650
ddb00942
DB
651static const char riff_tags[][5] = {
652 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
653 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
654 "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
1c88617b 655 { 0 }
ddb00942
DB
656};
657
7b2121e7
DB
658static int riff_has_valid_tags(AVFormatContext *s)
659{
660 int i;
7b2121e7 661
1c88617b 662 for (i = 0; *riff_tags[i]; i++)
ddb00942 663 if (av_dict_get(s->metadata, riff_tags[i], NULL, AV_DICT_MATCH_CASE))
7b2121e7 664 return 1;
7b2121e7
DB
665
666 return 0;
667}
668
669void ff_riff_write_info(AVFormatContext *s)
670{
671 AVIOContext *pb = s->pb;
672 int i;
673 int64_t list_pos;
674 AVDictionaryEntry *t = NULL;
675
676 ff_metadata_conv(&s->metadata, ff_riff_info_conv, NULL);
677
678 /* writing empty LIST is not nice and may cause problems */
679 if (!riff_has_valid_tags(s))
680 return;
681
682 list_pos = ff_start_tag(pb, "LIST");
683 ffio_wfourcc(pb, "INFO");
1c88617b
LB
684 for (i = 0; *riff_tags[i]; i++)
685 if ((t = av_dict_get(s->metadata, riff_tags[i],
686 NULL, AV_DICT_MATCH_CASE)))
7b2121e7 687 ff_riff_write_info_tag(s->pb, t->key, t->value);
7b2121e7
DB
688 ff_end_tag(pb, list_pos);
689}
1c88617b 690#endif /* CONFIG_MUXERS */
9d9f4119 691
b250f9c6 692#if CONFIG_DEMUXERS
9d9f4119
MR
693/* We could be given one of the three possible structures here:
694 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
695 * is an expansion of the previous one with the fields added
696 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
697 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
698 * an openended structure.
699 */
b845f5e9
LB
700
701static void parse_waveformatex(AVIOContext *pb, AVCodecContext *c)
702{
703 ff_asf_guid subformat;
704 c->bits_per_coded_sample = avio_rl16(pb);
705 c->channel_layout = avio_rl32(pb); /* dwChannelMask */
706
707 ff_get_guid(pb, &subformat);
708 if (!memcmp(subformat + 4,
709 (const uint8_t[]){ FF_MEDIASUBTYPE_BASE_GUID }, 12)) {
710 c->codec_tag = AV_RL32(subformat);
711 c->codec_id = ff_wav_codec_get_id(c->codec_tag,
712 c->bits_per_coded_sample);
713 } else {
714 c->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);
715 if (!c->codec_id)
716 av_log(c, AV_LOG_WARNING,
717 "unknown subformat:"FF_PRI_GUID"\n",
718 FF_ARG_GUID(subformat));
719 }
720}
721
ca402f32 722int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
9d9f4119
MR
723{
724 int id;
725
1c88617b
LB
726 id = avio_rl16(pb);
727 codec->codec_type = AVMEDIA_TYPE_AUDIO;
1c88617b 728 codec->channels = avio_rl16(pb);
b7effd4e 729 codec->sample_rate = avio_rl32(pb);
1c88617b 730 codec->bit_rate = avio_rl32(pb) * 8;
b7effd4e 731 codec->block_align = avio_rl16(pb);
9d9f4119 732 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
dd1c8f3e 733 codec->bits_per_coded_sample = 8;
1c88617b 734 } else
b7effd4e 735 codec->bits_per_coded_sample = avio_rl16(pb);
a3bf80a5
PR
736 if (id == 0xFFFE) {
737 codec->codec_tag = 0;
738 } else {
739 codec->codec_tag = id;
740 codec->codec_id = ff_wav_codec_get_id(id,
741 codec->bits_per_coded_sample);
742 }
72fd40bd 743 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
b7effd4e 744 int cbSize = avio_rl16(pb); /* cbSize */
1c88617b 745 size -= 18;
72fd40bd
BC
746 cbSize = FFMIN(size, cbSize);
747 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
b845f5e9 748 parse_waveformatex(pb, codec);
72fd40bd 749 cbSize -= 22;
1c88617b 750 size -= 22;
72fd40bd
BC
751 }
752 codec->extradata_size = cbSize;
753 if (cbSize > 0) {
ed8a5006 754 av_free(codec->extradata);
1c88617b
LB
755 codec->extradata = av_mallocz(codec->extradata_size +
756 FF_INPUT_BUFFER_PADDING_SIZE);
ca402f32
MH
757 if (!codec->extradata)
758 return AVERROR(ENOMEM);
b7effd4e 759 avio_read(pb, codec->extradata, codec->extradata_size);
72fd40bd
BC
760 size -= cbSize;
761 }
9d9f4119
MR
762
763 /* It is possible for the chunk to contain garbage at the end */
72fd40bd 764 if (size > 0)
45a8a02a 765 avio_skip(pb, size);
9d9f4119 766 }
36ef5369 767 if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {
1c88617b
LB
768 /* Channels and sample_rate values are those prior to applying SBR
769 * and/or PS. */
50d83b20
PR
770 codec->channels = 0;
771 codec->sample_rate = 0;
772 }
6ac34eed 773 /* override bits_per_coded_sample for G.726 */
36ef5369 774 if (codec->codec_id == AV_CODEC_ID_ADPCM_G726)
6ac34eed 775 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
ca402f32
MH
776
777 return 0;
9d9f4119
MR
778}
779
36ef5369 780enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
9d9f4119 781{
36ef5369 782 enum AVCodecID id;
1a40491e 783 id = ff_codec_get_id(ff_codec_wav_tags, tag);
9d9f4119
MR
784 if (id <= 0)
785 return id;
261e9348
JR
786
787 if (id == AV_CODEC_ID_PCM_S16LE)
788 id = ff_get_pcm_codec_id(bps, 0, 0, ~1);
789 else if (id == AV_CODEC_ID_PCM_F32LE)
1c88617b 790 id = ff_get_pcm_codec_id(bps, 1, 0, 0);
261e9348 791
36ef5369
AK
792 if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
793 id = AV_CODEC_ID_PCM_ZORK;
9d9f4119
MR
794 return id;
795}
773d892a 796
ae628ec1 797int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
773d892a
PR
798{
799 int tag1;
b7effd4e 800 avio_rl32(pb); /* size */
1c88617b 801 st->codec->width = avio_rl32(pb);
b7effd4e
AK
802 st->codec->height = (int32_t)avio_rl32(pb);
803 avio_rl16(pb); /* planes */
1c88617b
LB
804 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
805 tag1 = avio_rl32(pb);
b7effd4e
AK
806 avio_rl32(pb); /* ImageSize */
807 avio_rl32(pb); /* XPelsPerMeter */
808 avio_rl32(pb); /* YPelsPerMeter */
809 avio_rl32(pb); /* ClrUsed */
810 avio_rl32(pb); /* ClrImportant */
773d892a
PR
811 return tag1;
812}
12bc2050
VV
813
814int ff_read_riff_info(AVFormatContext *s, int64_t size)
815{
816 int64_t start, end, cur;
817 AVIOContext *pb = s->pb;
818
819 start = avio_tell(pb);
1c88617b 820 end = start + size;
12bc2050 821
1c88617b
LB
822 while ((cur = avio_tell(pb)) >= 0 &&
823 cur <= end - 8 /* = tag + size */) {
12bc2050
VV
824 uint32_t chunk_code;
825 int64_t chunk_size;
1c88617b 826 char key[5] = { 0 };
12bc2050
VV
827 char *value;
828
829 chunk_code = avio_rl32(pb);
830 chunk_size = avio_rl32(pb);
3c370f5a 831
1c88617b
LB
832 if (chunk_size > end ||
833 end - chunk_size < cur ||
834 chunk_size == UINT_MAX) {
3c370f5a
JR
835 av_log(s, AV_LOG_WARNING, "too big INFO subchunk\n");
836 break;
12bc2050
VV
837 }
838
839 chunk_size += (chunk_size & 1);
840
259d8c56
JR
841 if (!chunk_code) {
842 if (chunk_size)
843 avio_skip(pb, chunk_size);
8e329dba
LB
844 else if (pb->eof_reached) {
845 av_log(s, AV_LOG_WARNING, "truncated file\n");
846 return AVERROR_EOF;
847 }
259d8c56
JR
848 continue;
849 }
850
12bc2050
VV
851 value = av_malloc(chunk_size + 1);
852 if (!value) {
1c88617b
LB
853 av_log(s, AV_LOG_ERROR,
854 "out of memory, unable to read INFO tag\n");
12bc2050
VV
855 return AVERROR(ENOMEM);
856 }
857
858 AV_WL32(key, chunk_code);
859
860 if (avio_read(pb, value, chunk_size) != chunk_size) {
15cea369 861 av_free(value);
1c88617b
LB
862 av_log(s, AV_LOG_WARNING,
863 "premature end of file while reading INFO tag\n");
3c370f5a 864 break;
12bc2050
VV
865 }
866
867 value[chunk_size] = 0;
868
869 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
870 }
871
872 return 0;
873}
1c88617b 874#endif /* CONFIG_DEMUXERS */