efab7048ba810fd11a376fbc19bc2f17b0b6eca5
[libav.git] / libavformat / riff.c
1 /*
2 * RIFF codec tags
3 * Copyright (c) 2000 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
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
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/mathematics.h"
23 #include "libavcodec/avcodec.h"
24 #include "avformat.h"
25 #include "avio_internal.h"
26 #include "riff.h"
27 #include "libavcodec/bytestream.h"
28
29 /* Note: when encoding, the first matching tag is used, so order is
30 important if multiple tags possible for a given codec. */
31 const AVCodecTag ff_codec_bmp_tags[] = {
32 { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
33 { CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
34 { CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
35 { CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
36 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
37 { CODEC_ID_H264, MKTAG('D', 'A', 'V', 'C') },
38 { CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
39 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
40 { CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
41 { CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
42 { CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
43 { CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
44 { CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
45 { CODEC_ID_H263, MKTAG('M', '2', '6', '3') },
46 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
47 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
48 { CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
49 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
50 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
51 { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
52 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
53 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
54 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
55 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
56 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
57 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
58 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
59 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
60 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
61 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
62 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
63 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
64 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
65 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
66 { CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
67 { CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
68 { CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
69 { CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
70 { CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
71 { CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
72 { CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
73 { CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
74 { CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
75 { CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
76 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
77 { CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
78 { CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
79 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
80 { CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
81 { CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
82 { CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
83 { CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
84 { CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
85 { CODEC_ID_MPEG4, MKTAG('V', 'S', 'P', 'X') },
86 { CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
87 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
88 { CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
89 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'X') },
90 { CODEC_ID_MPEG4, MKTAG('D', 'r', 'e', 'X') },
91 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
92 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
93 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
94 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
95 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
96 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
97 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
98 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
99 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
100 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
101 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
102 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
103 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
104 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
105 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
106 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
107 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
108 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
111 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
112 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
113 { CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
114 { CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
115 { CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') }, /* Canopus DV */
116 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
117 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 's') },
118 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
119 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
120 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
121 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
122 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
123 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
124 { CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
125 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
126 { CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
127 { CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
128 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
129 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
130 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
131 { CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
132 { CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
133 { CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
134 { CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
135 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', 'v') },
136 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
137 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
138 { CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
139 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') },
140 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
141 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
142 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
143 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
144 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
145 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
146 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
147 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') },
148 { CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
149 { CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
150 { CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
151 { CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
152 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
153 { CODEC_ID_MJPEG, MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
154 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '1') },
155 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '2') },
156 { CODEC_ID_MJPEG, MKTAG('M', 'T', 'S', 'J') },
157 { CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
158 { CODEC_ID_MJPEG, MKTAG('M', 'M', 'J', 'P') },
159 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
160 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
161 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
162 { CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
163 { CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
164 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
165 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
166 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
167 { CODEC_ID_RAWVIDEO, MKTAG('V', '4', '2', '2') },
168 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'N', 'V') },
169 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'V') },
170 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'Y') },
171 { CODEC_ID_RAWVIDEO, MKTAG('u', 'y', 'v', '1') },
172 { CODEC_ID_RAWVIDEO, MKTAG('2', 'V', 'u', '1') },
173 { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') },
174 { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') },
175 { CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') },
176 { CODEC_ID_RAWVIDEO, MKTAG('P', '4', '2', '2') },
177 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
178 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '6') },
179 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '2', '4') },
180 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
181 { CODEC_ID_RAWVIDEO, MKTAG('V', 'Y', 'U', 'Y') },
182 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
183 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
184 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', ' ', ' ') },
185 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
186 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
187 { CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
188 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', '1') },
189 { CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '1', '2') },
190 { CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '2', '1') },
191 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', 'B') },
192 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', 'B') },
193 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'V', '9') },
194 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
195 { CODEC_ID_RAWVIDEO, MKTAG('a', 'u', 'v', '2') },
196 { CODEC_ID_FRWU, MKTAG('F', 'R', 'W', 'U') },
197 { CODEC_ID_R10K, MKTAG('R', '1', '0', 'k') },
198 { CODEC_ID_R210, MKTAG('r', '2', '1', '0') },
199 { CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
200 { CODEC_ID_V410, MKTAG('v', '4', '1', '0') },
201 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
202 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
203 { CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
204 { CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
205 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
206 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
207 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
208 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
209 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
210 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
211 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
212 { CODEC_ID_VP6F, MKTAG('F', 'L', 'V', '4') },
213 { CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
214 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
215 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
216 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
217 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
218 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
219 { CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
220 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
221 { CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
222 { CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
223 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
224 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
225 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
226 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
227 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
228 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
229 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
230 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
231 { CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
232 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
233 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
234 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
235 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
236 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
237 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
238 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
239 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
240 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
241 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
242 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
243 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
244 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
245 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
246 { CODEC_ID_WMV3IMAGE, MKTAG('W', 'M', 'V', 'P') },
247 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
248 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
249 { CODEC_ID_VC1IMAGE, MKTAG('W', 'V', 'P', '2') },
250 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
251 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
252 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
253 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
254 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
255 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
256 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
257 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
258 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
259 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
260 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
261 { CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') },
262 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
263 { CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'C') },
264 { CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'K') },
265 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
266 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
267 { CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
268 { CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
269 { CODEC_ID_CLJR, MKTAG('C', 'L', 'J', 'R') },
270 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
271 { CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
272 { CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
273 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
274 { CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
275 { CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
276 { CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
277 { CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
278 { CODEC_ID_KGV1, MKTAG('K', 'G', 'V', '1') },
279 { CODEC_ID_LAGARITH, MKTAG('L', 'A', 'G', 'S') },
280 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'A') },
281 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'G') },
282 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '0') },
283 { CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '2') },
284 { CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
285 { CODEC_ID_DXTORY, MKTAG('x', 't', 'o', 'r') },
286 { CODEC_ID_ZEROCODEC, MKTAG('Z', 'E', 'C', 'O') },
287 { CODEC_ID_MSS1, MKTAG('M', 'S', 'S', '1') },
288 { CODEC_ID_NONE, 0 }
289 };
290
291 const AVCodecTag ff_codec_wav_tags[] = {
292 { CODEC_ID_PCM_S16LE, 0x0001 },
293 { CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
294 { CODEC_ID_PCM_S24LE, 0x0001 },
295 { CODEC_ID_PCM_S32LE, 0x0001 },
296 { CODEC_ID_ADPCM_MS, 0x0002 },
297 { CODEC_ID_PCM_F32LE, 0x0003 },
298 { CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
299 { CODEC_ID_PCM_ALAW, 0x0006 },
300 { CODEC_ID_PCM_MULAW, 0x0007 },
301 { CODEC_ID_WMAVOICE, 0x000A },
302 { CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
303 { CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
304 { CODEC_ID_ADPCM_YAMAHA, 0x0020 },
305 { CODEC_ID_TRUESPEECH, 0x0022 },
306 { CODEC_ID_GSM_MS, 0x0031 },
307 { CODEC_ID_ADPCM_G726, 0x0045 },
308 { CODEC_ID_MP2, 0x0050 },
309 { CODEC_ID_MP3, 0x0055 },
310 { CODEC_ID_AMR_NB, 0x0057 },
311 { CODEC_ID_AMR_WB, 0x0058 },
312 { CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
313 { CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
314 { CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
315 { CODEC_ID_VOXWARE, 0x0075 },
316 { CODEC_ID_AAC, 0x00ff },
317 { CODEC_ID_SIPR, 0x0130 },
318 { CODEC_ID_WMAV1, 0x0160 },
319 { CODEC_ID_WMAV2, 0x0161 },
320 { CODEC_ID_WMAPRO, 0x0162 },
321 { CODEC_ID_WMALOSSLESS, 0x0163 },
322 { CODEC_ID_ADPCM_CT, 0x0200 },
323 { CODEC_ID_ATRAC3, 0x0270 },
324 { CODEC_ID_ADPCM_G722, 0x028F },
325 { CODEC_ID_IMC, 0x0401 },
326 { CODEC_ID_IAC, 0x0402 },
327 { CODEC_ID_GSM_MS, 0x1500 },
328 { CODEC_ID_TRUESPEECH, 0x1501 },
329 { CODEC_ID_AAC, 0x1600 }, /* ADTS AAC */
330 { CODEC_ID_AAC_LATM, 0x1602 },
331 { CODEC_ID_AC3, 0x2000 },
332 { CODEC_ID_DTS, 0x2001 },
333 { CODEC_ID_PCM_MULAW, 0x6c75 },
334 { CODEC_ID_AAC, 0x706d },
335 { CODEC_ID_AAC, 0x4143 },
336 { CODEC_ID_SPEEX, 0xA109 },
337 { CODEC_ID_FLAC, 0xF1AC },
338 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
339 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
340
341 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
342 // for NuppelVideo (nuv.c)
343 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
344 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
345 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },
346 { CODEC_ID_NONE, 0 },
347 };
348
349 const AVMetadataConv ff_riff_info_conv[] = {
350 { "IART", "artist" },
351 { "ICMT", "comment" },
352 { "ICOP", "copyright" },
353 { "ICRD", "date" },
354 { "IGNR", "genre" },
355 { "ILNG", "language" },
356 { "INAM", "title" },
357 { "IPRD", "album" },
358 { "IPRT", "track" },
359 { "ISFT", "encoder" },
360 { "ITCH", "encoded_by"},
361 { 0 },
362 };
363
364 const char ff_riff_tags[][5] = {
365 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
366 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
367 "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
368 {0}
369 };
370
371 #if CONFIG_MUXERS
372 int64_t ff_start_tag(AVIOContext *pb, const char *tag)
373 {
374 ffio_wfourcc(pb, tag);
375 avio_wl32(pb, 0);
376 return avio_tell(pb);
377 }
378
379 void ff_end_tag(AVIOContext *pb, int64_t start)
380 {
381 int64_t pos;
382
383 pos = avio_tell(pb);
384 avio_seek(pb, start - 4, SEEK_SET);
385 avio_wl32(pb, (uint32_t)(pos - start));
386 avio_seek(pb, pos, SEEK_SET);
387 }
388
389 /* WAVEFORMATEX header */
390 /* returns the size or -1 on error */
391 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
392 {
393 int bps, blkalign, bytespersec, frame_size;
394 int hdrsize = 18;
395 int waveformatextensible;
396 uint8_t temp[256];
397 uint8_t *riff_extradata= temp;
398 uint8_t *riff_extradata_start= temp;
399
400 if(!enc->codec_tag || enc->codec_tag > 0xffff)
401 return -1;
402
403 /* We use the known constant frame size for the codec if known, otherwise
404 fallback to using AVCodecContext.frame_size, which is not as reliable
405 for indicating packet duration */
406 frame_size = av_get_audio_frame_duration(enc, 0);
407 if (!frame_size)
408 frame_size = enc->frame_size;
409
410 waveformatextensible = (enc->channels > 2 && enc->channel_layout)
411 || enc->sample_rate > 48000
412 || av_get_bits_per_sample(enc->codec_id) > 16;
413
414 if (waveformatextensible) {
415 avio_wl16(pb, 0xfffe);
416 } else {
417 avio_wl16(pb, enc->codec_tag);
418 }
419 avio_wl16(pb, enc->channels);
420 avio_wl32(pb, enc->sample_rate);
421 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
422 bps = 0;
423 } else {
424 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
425 if (enc->bits_per_coded_sample)
426 bps = enc->bits_per_coded_sample;
427 else
428 bps = 16; // default to 16
429 }
430 }
431 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
432 av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
433 }
434
435 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
436 /* this is wrong, but it seems many demuxers do not work if this is set
437 correctly */
438 blkalign = frame_size;
439 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
440 } else if (enc->codec_id == CODEC_ID_AC3) {
441 blkalign = 3840; //maximum bytes per frame
442 } else if (enc->block_align != 0) { /* specified by the codec */
443 blkalign = enc->block_align;
444 } else
445 blkalign = bps * enc->channels / av_gcd(8, bps);
446 if (enc->codec_id == CODEC_ID_PCM_U8 ||
447 enc->codec_id == CODEC_ID_PCM_S24LE ||
448 enc->codec_id == CODEC_ID_PCM_S32LE ||
449 enc->codec_id == CODEC_ID_PCM_F32LE ||
450 enc->codec_id == CODEC_ID_PCM_F64LE ||
451 enc->codec_id == CODEC_ID_PCM_S16LE) {
452 bytespersec = enc->sample_rate * blkalign;
453 } else {
454 bytespersec = enc->bit_rate / 8;
455 }
456 avio_wl32(pb, bytespersec); /* bytes per second */
457 avio_wl16(pb, blkalign); /* block align */
458 avio_wl16(pb, bps); /* bits per sample */
459 if (enc->codec_id == CODEC_ID_MP3) {
460 hdrsize += 12;
461 bytestream_put_le16(&riff_extradata, 1); /* wID */
462 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
463 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
464 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
465 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
466 } else if (enc->codec_id == CODEC_ID_MP2) {
467 hdrsize += 22;
468 bytestream_put_le16(&riff_extradata, 2); /* fwHeadLayer */
469 bytestream_put_le32(&riff_extradata, enc->bit_rate); /* dwHeadBitrate */
470 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
471 bytestream_put_le16(&riff_extradata, 0); /* fwHeadModeExt */
472 bytestream_put_le16(&riff_extradata, 1); /* wHeadEmphasis */
473 bytestream_put_le16(&riff_extradata, 16); /* fwHeadFlags */
474 bytestream_put_le32(&riff_extradata, 0); /* dwPTSLow */
475 bytestream_put_le32(&riff_extradata, 0); /* dwPTSHigh */
476 } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
477 hdrsize += 2;
478 bytestream_put_le16(&riff_extradata, frame_size); /* wSamplesPerBlock */
479 } else if(enc->extradata_size){
480 riff_extradata_start= enc->extradata;
481 riff_extradata= enc->extradata + enc->extradata_size;
482 hdrsize += enc->extradata_size;
483 }
484 if(waveformatextensible) { /* write WAVEFORMATEXTENSIBLE extensions */
485 hdrsize += 22;
486 avio_wl16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
487 avio_wl16(pb, bps); /* ValidBitsPerSample || SamplesPerBlock || Reserved */
488 avio_wl32(pb, enc->channel_layout); /* dwChannelMask */
489 avio_wl32(pb, enc->codec_tag); /* GUID + next 3 */
490 avio_wl32(pb, 0x00100000);
491 avio_wl32(pb, 0xAA000080);
492 avio_wl32(pb, 0x719B3800);
493 } else {
494 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
495 }
496 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
497 if(hdrsize&1){
498 hdrsize++;
499 avio_w8(pb, 0);
500 }
501
502 return hdrsize;
503 }
504
505 /* BITMAPINFOHEADER header */
506 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
507 {
508 avio_wl32(pb, 40 + enc->extradata_size); /* size */
509 avio_wl32(pb, enc->width);
510 //We always store RGB TopDown
511 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
512 avio_wl16(pb, 1); /* planes */
513
514 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
515 /* compression type */
516 avio_wl32(pb, enc->codec_tag);
517 avio_wl32(pb, enc->width * enc->height * 3);
518 avio_wl32(pb, 0);
519 avio_wl32(pb, 0);
520 avio_wl32(pb, 0);
521 avio_wl32(pb, 0);
522
523 avio_write(pb, enc->extradata, enc->extradata_size);
524
525 if (!for_asf && enc->extradata_size & 1)
526 avio_w8(pb, 0);
527 }
528 #endif //CONFIG_MUXERS
529
530 #if CONFIG_DEMUXERS
531 /* We could be given one of the three possible structures here:
532 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
533 * is an expansion of the previous one with the fields added
534 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
535 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
536 * an openended structure.
537 */
538 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
539 {
540 int id;
541
542 id = avio_rl16(pb);
543 codec->codec_type = AVMEDIA_TYPE_AUDIO;
544 codec->codec_tag = id;
545 codec->channels = avio_rl16(pb);
546 codec->sample_rate = avio_rl32(pb);
547 codec->bit_rate = avio_rl32(pb) * 8;
548 codec->block_align = avio_rl16(pb);
549 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
550 codec->bits_per_coded_sample = 8;
551 }else
552 codec->bits_per_coded_sample = avio_rl16(pb);
553 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
554 int cbSize = avio_rl16(pb); /* cbSize */
555 size -= 18;
556 cbSize = FFMIN(size, cbSize);
557 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
558 codec->bits_per_coded_sample = avio_rl16(pb);
559 codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
560 id = avio_rl32(pb); /* 4 first bytes of GUID */
561 avio_skip(pb, 12); /* skip end of GUID */
562 cbSize -= 22;
563 size -= 22;
564 }
565 codec->extradata_size = cbSize;
566 if (cbSize > 0) {
567 av_free(codec->extradata);
568 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
569 if (!codec->extradata)
570 return AVERROR(ENOMEM);
571 avio_read(pb, codec->extradata, codec->extradata_size);
572 size -= cbSize;
573 }
574
575 /* It is possible for the chunk to contain garbage at the end */
576 if (size > 0)
577 avio_skip(pb, size);
578 }
579 codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
580 if (codec->codec_id == CODEC_ID_AAC_LATM) {
581 /* channels and sample_rate values are those prior to applying SBR and/or PS */
582 codec->channels = 0;
583 codec->sample_rate = 0;
584 }
585 /* override bits_per_coded_sample for G.726 */
586 if (codec->codec_id == CODEC_ID_ADPCM_G726)
587 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
588
589 return 0;
590 }
591
592
593 enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps)
594 {
595 enum CodecID id;
596 id = ff_codec_get_id(ff_codec_wav_tags, tag);
597 if (id <= 0)
598 return id;
599 /* handle specific u8 codec */
600 if (id == CODEC_ID_PCM_S16LE && bps == 8)
601 id = CODEC_ID_PCM_U8;
602 if (id == CODEC_ID_PCM_S16LE && bps == 24)
603 id = CODEC_ID_PCM_S24LE;
604 if (id == CODEC_ID_PCM_S16LE && bps == 32)
605 id = CODEC_ID_PCM_S32LE;
606 if (id == CODEC_ID_PCM_F32LE && bps == 64)
607 id = CODEC_ID_PCM_F64LE;
608 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
609 id = CODEC_ID_PCM_ZORK;
610 return id;
611 }
612
613 int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
614 {
615 int tag1;
616 avio_rl32(pb); /* size */
617 st->codec->width = avio_rl32(pb);
618 st->codec->height = (int32_t)avio_rl32(pb);
619 avio_rl16(pb); /* planes */
620 st->codec->bits_per_coded_sample= avio_rl16(pb); /* depth */
621 tag1 = avio_rl32(pb);
622 avio_rl32(pb); /* ImageSize */
623 avio_rl32(pb); /* XPelsPerMeter */
624 avio_rl32(pb); /* YPelsPerMeter */
625 avio_rl32(pb); /* ClrUsed */
626 avio_rl32(pb); /* ClrImportant */
627 return tag1;
628 }
629 #endif // CONFIG_DEMUXERS
630
631 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
632 {
633 int gcd;
634 int audio_frame_size;
635
636 /* We use the known constant frame size for the codec if known, otherwise
637 fallback to using AVCodecContext.frame_size, which is not as reliable
638 for indicating packet duration */
639 audio_frame_size = av_get_audio_frame_duration(stream, 0);
640 if (!audio_frame_size)
641 audio_frame_size = stream->frame_size;
642
643 *au_ssize= stream->block_align;
644 if (audio_frame_size && stream->sample_rate) {
645 *au_scale = audio_frame_size;
646 *au_rate= stream->sample_rate;
647 }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
648 stream->codec_type == AVMEDIA_TYPE_DATA ||
649 stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
650 *au_scale= stream->time_base.num;
651 *au_rate = stream->time_base.den;
652 }else{
653 *au_scale= stream->block_align ? stream->block_align*8 : 8;
654 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
655 }
656 gcd= av_gcd(*au_scale, *au_rate);
657 *au_scale /= gcd;
658 *au_rate /= gcd;
659 }
660
661 int ff_read_riff_info(AVFormatContext *s, int64_t size)
662 {
663 int64_t start, end, cur;
664 AVIOContext *pb = s->pb;
665
666 start = avio_tell(pb);
667 end = start + size;
668
669 while ((cur = avio_tell(pb)) >= 0 && cur <= end - 8 /* = tag + size */) {
670 uint32_t chunk_code;
671 int64_t chunk_size;
672 char key[5] = {0};
673 char *value;
674
675 chunk_code = avio_rl32(pb);
676 chunk_size = avio_rl32(pb);
677 if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
678 av_log(s, AV_LOG_ERROR, "too big INFO subchunk\n");
679 return AVERROR_INVALIDDATA;
680 }
681
682 chunk_size += (chunk_size & 1);
683
684 value = av_malloc(chunk_size + 1);
685 if (!value) {
686 av_log(s, AV_LOG_ERROR, "out of memory, unable to read INFO tag\n");
687 return AVERROR(ENOMEM);
688 }
689
690 AV_WL32(key, chunk_code);
691
692 if (avio_read(pb, value, chunk_size) != chunk_size) {
693 av_free(value);
694 av_log(s, AV_LOG_ERROR, "premature end of file while reading INFO tag\n");
695 return AVERROR_INVALIDDATA;
696 }
697
698 value[chunk_size] = 0;
699
700 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
701 }
702
703 return 0;
704 }