2 * RIFF common functions and data
3 * Copyright (c) 2000 Fabrice Bellard
5 * This file is part of Libav.
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.
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.
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
22 #include "libavutil/mathematics.h"
23 #include "libavcodec/avcodec.h"
25 #include "avio_internal.h"
27 #include "libavcodec/bytestream.h"
29 /* Note: When encoding, the first matching tag is used, so order is
30 * important if multiple tags are possible for a given codec. */
31 const AVCodecTag ff_codec_bmp_tags[] = {
32 { AV_CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
33 { AV_CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
34 { AV_CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
35 { AV_CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
36 { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
37 { AV_CODEC_ID_H264, MKTAG('D', 'A', 'V', 'C') },
38 { AV_CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
39 { AV_CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
40 { AV_CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
41 { AV_CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
42 { AV_CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
43 { AV_CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
44 { AV_CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
45 { AV_CODEC_ID_H263, MKTAG('M', '2', '6', '3') },
46 { AV_CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
47 { AV_CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* Intel H.263 */
48 { AV_CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
49 { AV_CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
50 { AV_CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
51 { AV_CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
52 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
53 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
54 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
55 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
56 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
57 /* 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') },
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') },
69 /* WaWv MPEG-4 Video Codec */
70 { AV_CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') },
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') },
82 { AV_CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') },
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') },
87 { AV_CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') },
88 { AV_CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
90 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') },
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') },
95 /* Samsung SHR-6040 */
96 { AV_CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') },
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') },
122 { AV_CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') },
124 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') },
126 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') },
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') },
142 /* Lead MPEG-2 in AVI */
143 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') },
144 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
145 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
146 /* Matrox MPEG-2 intra-only */
147 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') },
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') },
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') },
158 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
159 /* JPEG-LS custom FOURCC for AVI - decoder */
160 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') },
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') },
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') },
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') },
177 /* Paradigm Matrix M-JPEG Codec */
178 { AV_CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') },
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') },
208 /* SoftLab-NSK VideoTizer */
209 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') },
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') },
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') },
305 { AV_CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
306 { AV_CODEC_ID_DXTORY, MKTAG('x', 't', 'o', 'r') },
307 { AV_CODEC_ID_ZEROCODEC, MKTAG('Z', 'E', 'C', 'O') },
308 { AV_CODEC_ID_MSS1, MKTAG('M', 'S', 'S', '1') },
309 { AV_CODEC_ID_MSA1, MKTAG('M', 'S', 'A', '1') },
310 { AV_CODEC_ID_TSCC2, MKTAG('T', 'S', 'C', '2') },
311 { AV_CODEC_ID_MTS2, MKTAG('M', 'T', 'S', '2') },
312 { AV_CODEC_ID_CLLC, MKTAG('C', 'L', 'L', 'C') },
313 { AV_CODEC_ID_MSS2, MKTAG('M', 'S', 'S', '2') },
314 { AV_CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
315 { AV_CODEC_ID_NONE, 0 }
318 const AVCodecTag ff_codec_wav_tags[] = {
319 { AV_CODEC_ID_PCM_S16LE, 0x0001 },
320 /* must come after s16le in this list */
321 { AV_CODEC_ID_PCM_U8, 0x0001 },
322 { AV_CODEC_ID_PCM_S24LE, 0x0001 },
323 { AV_CODEC_ID_PCM_S32LE, 0x0001 },
324 { AV_CODEC_ID_ADPCM_MS, 0x0002 },
325 { AV_CODEC_ID_PCM_F32LE, 0x0003 },
326 /* must come after f32le in this list */
327 { AV_CODEC_ID_PCM_F64LE, 0x0003 },
328 { AV_CODEC_ID_PCM_ALAW, 0x0006 },
329 { AV_CODEC_ID_PCM_MULAW, 0x0007 },
330 { AV_CODEC_ID_WMAVOICE, 0x000A },
331 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
332 /* must come after adpcm_ima_wav in this list */
333 { AV_CODEC_ID_PCM_ZORK, 0x0011 },
334 { AV_CODEC_ID_ADPCM_YAMAHA, 0x0020 },
335 { AV_CODEC_ID_TRUESPEECH, 0x0022 },
336 { AV_CODEC_ID_GSM_MS, 0x0031 },
337 { AV_CODEC_ID_ADPCM_G726, 0x0045 },
338 { AV_CODEC_ID_MP2, 0x0050 },
339 { AV_CODEC_ID_MP3, 0x0055 },
340 { AV_CODEC_ID_AMR_NB, 0x0057 },
341 { AV_CODEC_ID_AMR_WB, 0x0058 },
342 /* rogue format number */
343 { AV_CODEC_ID_ADPCM_IMA_DK4, 0x0061 },
344 /* rogue format number */
345 { AV_CODEC_ID_ADPCM_IMA_DK3, 0x0062 },
346 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
347 { AV_CODEC_ID_VOXWARE, 0x0075 },
348 { AV_CODEC_ID_AAC, 0x00ff },
349 { AV_CODEC_ID_SIPR, 0x0130 },
350 { AV_CODEC_ID_WMAV1, 0x0160 },
351 { AV_CODEC_ID_WMAV2, 0x0161 },
352 { AV_CODEC_ID_WMAPRO, 0x0162 },
353 { AV_CODEC_ID_WMALOSSLESS, 0x0163 },
354 { AV_CODEC_ID_ADPCM_CT, 0x0200 },
355 { AV_CODEC_ID_ATRAC3, 0x0270 },
356 { AV_CODEC_ID_ADPCM_G722, 0x028F },
357 { AV_CODEC_ID_IMC, 0x0401 },
358 { AV_CODEC_ID_IAC, 0x0402 },
359 { AV_CODEC_ID_GSM_MS, 0x1500 },
360 { AV_CODEC_ID_TRUESPEECH, 0x1501 },
362 { AV_CODEC_ID_AAC, 0x1600 },
363 { AV_CODEC_ID_AAC_LATM, 0x1602 },
364 { AV_CODEC_ID_AC3, 0x2000 },
365 { AV_CODEC_ID_DTS, 0x2001 },
366 { AV_CODEC_ID_PCM_MULAW, 0x6c75 },
367 { AV_CODEC_ID_AAC, 0x706d },
368 { AV_CODEC_ID_AAC, 0x4143 },
369 { AV_CODEC_ID_SPEEX, 0xA109 },
370 { AV_CODEC_ID_FLAC, 0xF1AC },
371 { AV_CODEC_ID_ADPCM_SWF, ('S' << 8) + 'F' },
372 /* HACK/FIXME: Does Vorbis in WAV/AVI have an (in)official ID? */
373 { AV_CODEC_ID_VORBIS, ('V' << 8) + 'o' },
374 { AV_CODEC_ID_NONE, 0 },
377 const AVCodecGuid ff_codec_wav_guids[] = {
378 { AV_CODEC_ID_AC3, { 0x2C, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
379 { AV_CODEC_ID_EAC3, { 0xAF, 0x87, 0xFB, 0xA7, 0x02, 0x2D, 0xFB, 0x42, 0xA4, 0xD4, 0x05, 0xCD, 0x93, 0x84, 0x3B, 0xDD } },
380 { AV_CODEC_ID_MP2, { 0x2B, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },
384 const AVMetadataConv ff_riff_info_conv[] = {
385 { "IART", "artist" },
386 { "ICMT", "comment" },
387 { "ICOP", "copyright" },
390 { "ILNG", "language" },
394 { "ISFT", "encoder" },
395 { "ITCH", "encoded_by" },
399 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
402 for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++)
403 if (!ff_guidcmp(guids[i].guid, guid))
405 return AV_CODEC_ID_NONE;
409 int64_t ff_start_tag(AVIOContext *pb, const char *tag)
411 ffio_wfourcc(pb, tag);
413 return avio_tell(pb);
416 void ff_end_tag(AVIOContext *pb, int64_t start)
421 avio_seek(pb, start - 4, SEEK_SET);
422 avio_wl32(pb, (uint32_t)(pos - start));
423 avio_seek(pb, pos, SEEK_SET);
426 /* WAVEFORMATEX header */
427 /* returns the size or -1 on error */
428 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
430 int bps, blkalign, bytespersec, frame_size;
432 int waveformatextensible;
434 uint8_t *riff_extradata = temp;
435 uint8_t *riff_extradata_start = temp;
437 if (!enc->codec_tag || enc->codec_tag > 0xffff)
440 /* We use the known constant frame size for the codec if known, otherwise
441 * fall back on using AVCodecContext.frame_size, which is not as reliable
442 * for indicating packet duration. */
443 frame_size = av_get_audio_frame_duration(enc, 0);
445 frame_size = enc->frame_size;
447 waveformatextensible = (enc->channels > 2 && enc->channel_layout) ||
448 enc->sample_rate > 48000 ||
449 av_get_bits_per_sample(enc->codec_id) > 16;
451 if (waveformatextensible)
452 avio_wl16(pb, 0xfffe);
454 avio_wl16(pb, enc->codec_tag);
456 avio_wl16(pb, enc->channels);
457 avio_wl32(pb, enc->sample_rate);
458 if (enc->codec_id == AV_CODEC_ID_MP2 ||
459 enc->codec_id == AV_CODEC_ID_MP3 ||
460 enc->codec_id == AV_CODEC_ID_GSM_MS) {
463 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
464 if (enc->bits_per_coded_sample)
465 bps = enc->bits_per_coded_sample;
467 bps = 16; // default to 16
470 if (bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample) {
471 av_log(enc, AV_LOG_WARNING,
472 "requested bits_per_coded_sample (%d) "
473 "and actually stored (%d) differ\n",
474 enc->bits_per_coded_sample, bps);
477 if (enc->codec_id == AV_CODEC_ID_MP2 ||
478 enc->codec_id == AV_CODEC_ID_MP3) {
479 /* This is wrong, but it seems many demuxers do not work if this
480 * is set correctly. */
481 blkalign = frame_size;
482 // blkalign = 144 * enc->bit_rate/enc->sample_rate;
483 } else if (enc->codec_id == AV_CODEC_ID_AC3) {
484 blkalign = 3840; /* maximum bytes per frame */
485 } else if (enc->block_align != 0) { /* specified by the codec */
486 blkalign = enc->block_align;
488 blkalign = bps * enc->channels / av_gcd(8, bps);
489 if (enc->codec_id == AV_CODEC_ID_PCM_U8 ||
490 enc->codec_id == AV_CODEC_ID_PCM_S24LE ||
491 enc->codec_id == AV_CODEC_ID_PCM_S32LE ||
492 enc->codec_id == AV_CODEC_ID_PCM_F32LE ||
493 enc->codec_id == AV_CODEC_ID_PCM_F64LE ||
494 enc->codec_id == AV_CODEC_ID_PCM_S16LE) {
495 bytespersec = enc->sample_rate * blkalign;
497 bytespersec = enc->bit_rate / 8;
499 avio_wl32(pb, bytespersec); /* bytes per second */
500 avio_wl16(pb, blkalign); /* block align */
501 avio_wl16(pb, bps); /* bits per sample */
502 if (enc->codec_id == AV_CODEC_ID_MP3) {
504 bytestream_put_le16(&riff_extradata, 1); /* wID */
505 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
506 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
507 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
508 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
509 } else if (enc->codec_id == AV_CODEC_ID_MP2) {
512 bytestream_put_le16(&riff_extradata, 2);
514 bytestream_put_le32(&riff_extradata, enc->bit_rate);
516 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8);
518 bytestream_put_le16(&riff_extradata, 0);
520 bytestream_put_le16(&riff_extradata, 1);
522 bytestream_put_le16(&riff_extradata, 16);
524 bytestream_put_le32(&riff_extradata, 0);
526 bytestream_put_le32(&riff_extradata, 0);
527 } else if (enc->codec_id == AV_CODEC_ID_GSM_MS ||
528 enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
530 /* wSamplesPerBlock */
531 bytestream_put_le16(&riff_extradata, frame_size);
532 } else if (enc->extradata_size) {
533 riff_extradata_start = enc->extradata;
534 riff_extradata = enc->extradata + enc->extradata_size;
535 hdrsize += enc->extradata_size;
537 /* write WAVEFORMATEXTENSIBLE extensions */
538 if (waveformatextensible) {
540 /* 22 is WAVEFORMATEXTENSIBLE size */
541 avio_wl16(pb, riff_extradata - riff_extradata_start + 22);
542 /* ValidBitsPerSample || SamplesPerBlock || Reserved */
545 avio_wl32(pb, enc->channel_layout);
547 avio_wl32(pb, enc->codec_tag);
548 avio_wl32(pb, 0x00100000);
549 avio_wl32(pb, 0xAA000080);
550 avio_wl32(pb, 0x719B3800);
552 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
554 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
563 /* BITMAPINFOHEADER header */
564 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc,
565 const AVCodecTag *tags, int for_asf)
568 avio_wl32(pb, 40 + enc->extradata_size);
569 avio_wl32(pb, enc->width);
570 //We always store RGB TopDown
571 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
575 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24);
576 /* compression type */
577 avio_wl32(pb, enc->codec_tag);
578 avio_wl32(pb, enc->width * enc->height * 3);
584 avio_write(pb, enc->extradata, enc->extradata_size);
586 if (!for_asf && enc->extradata_size & 1)
590 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate,
591 int *au_ssize, int *au_scale)
594 int audio_frame_size;
596 /* We use the known constant frame size for the codec if known, otherwise
597 * fall back on using AVCodecContext.frame_size, which is not as reliable
598 * for indicating packet duration. */
599 audio_frame_size = av_get_audio_frame_duration(stream, 0);
600 if (!audio_frame_size)
601 audio_frame_size = stream->frame_size;
603 *au_ssize = stream->block_align;
604 if (audio_frame_size && stream->sample_rate) {
605 *au_scale = audio_frame_size;
606 *au_rate = stream->sample_rate;
607 } else if (stream->codec_type == AVMEDIA_TYPE_VIDEO ||
608 stream->codec_type == AVMEDIA_TYPE_DATA ||
609 stream->codec_type == AVMEDIA_TYPE_SUBTITLE) {
610 *au_scale = stream->time_base.num;
611 *au_rate = stream->time_base.den;
613 *au_scale = stream->block_align ? stream->block_align * 8 : 8;
614 *au_rate = stream->bit_rate ? stream->bit_rate :
615 8 * stream->sample_rate;
617 gcd = av_gcd(*au_scale, *au_rate);
622 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
624 int len = strlen(str);
627 ffio_wfourcc(pb, tag);
629 avio_put_str(pb, str);
635 static const char riff_tags[][5] = {
636 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
637 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
638 "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
642 static int riff_has_valid_tags(AVFormatContext *s)
646 for (i = 0; *riff_tags[i]; i++)
647 if (av_dict_get(s->metadata, riff_tags[i], NULL, AV_DICT_MATCH_CASE))
653 void ff_riff_write_info(AVFormatContext *s)
655 AVIOContext *pb = s->pb;
658 AVDictionaryEntry *t = NULL;
660 ff_metadata_conv(&s->metadata, ff_riff_info_conv, NULL);
662 /* writing empty LIST is not nice and may cause problems */
663 if (!riff_has_valid_tags(s))
666 list_pos = ff_start_tag(pb, "LIST");
667 ffio_wfourcc(pb, "INFO");
668 for (i = 0; *riff_tags[i]; i++)
669 if ((t = av_dict_get(s->metadata, riff_tags[i],
670 NULL, AV_DICT_MATCH_CASE)))
671 ff_riff_write_info_tag(s->pb, t->key, t->value);
672 ff_end_tag(pb, list_pos);
674 #endif /* CONFIG_MUXERS */
677 /* We could be given one of the three possible structures here:
678 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
679 * is an expansion of the previous one with the fields added
680 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
681 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
682 * an openended structure.
684 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
689 codec->codec_type = AVMEDIA_TYPE_AUDIO;
690 codec->codec_tag = id;
691 codec->channels = avio_rl16(pb);
692 codec->sample_rate = avio_rl32(pb);
693 codec->bit_rate = avio_rl32(pb) * 8;
694 codec->block_align = avio_rl16(pb);
695 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
696 codec->bits_per_coded_sample = 8;
698 codec->bits_per_coded_sample = avio_rl16(pb);
699 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
700 int cbSize = avio_rl16(pb); /* cbSize */
702 cbSize = FFMIN(size, cbSize);
703 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
704 codec->bits_per_coded_sample = avio_rl16(pb);
705 codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
706 id = avio_rl32(pb); /* 4 first bytes of GUID */
707 avio_skip(pb, 12); /* skip end of GUID */
711 codec->extradata_size = cbSize;
713 av_free(codec->extradata);
714 codec->extradata = av_mallocz(codec->extradata_size +
715 FF_INPUT_BUFFER_PADDING_SIZE);
716 if (!codec->extradata)
717 return AVERROR(ENOMEM);
718 avio_read(pb, codec->extradata, codec->extradata_size);
722 /* It is possible for the chunk to contain garbage at the end */
726 codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
727 if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {
728 /* Channels and sample_rate values are those prior to applying SBR
731 codec->sample_rate = 0;
733 /* override bits_per_coded_sample for G.726 */
734 if (codec->codec_id == AV_CODEC_ID_ADPCM_G726)
735 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
740 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
743 id = ff_codec_get_id(ff_codec_wav_tags, tag);
747 if (id == AV_CODEC_ID_PCM_S16LE)
748 id = ff_get_pcm_codec_id(bps, 0, 0, ~1);
749 else if (id == AV_CODEC_ID_PCM_F32LE)
750 id = ff_get_pcm_codec_id(bps, 1, 0, 0);
752 if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
753 id = AV_CODEC_ID_PCM_ZORK;
757 int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
760 avio_rl32(pb); /* size */
761 st->codec->width = avio_rl32(pb);
762 st->codec->height = (int32_t)avio_rl32(pb);
763 avio_rl16(pb); /* planes */
764 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
765 tag1 = avio_rl32(pb);
766 avio_rl32(pb); /* ImageSize */
767 avio_rl32(pb); /* XPelsPerMeter */
768 avio_rl32(pb); /* YPelsPerMeter */
769 avio_rl32(pb); /* ClrUsed */
770 avio_rl32(pb); /* ClrImportant */
774 int ff_read_riff_info(AVFormatContext *s, int64_t size)
776 int64_t start, end, cur;
777 AVIOContext *pb = s->pb;
779 start = avio_tell(pb);
782 while ((cur = avio_tell(pb)) >= 0 &&
783 cur <= end - 8 /* = tag + size */) {
789 chunk_code = avio_rl32(pb);
790 chunk_size = avio_rl32(pb);
792 if (chunk_size > end ||
793 end - chunk_size < cur ||
794 chunk_size == UINT_MAX) {
795 av_log(s, AV_LOG_WARNING, "too big INFO subchunk\n");
799 chunk_size += (chunk_size & 1);
803 avio_skip(pb, chunk_size);
804 else if (pb->eof_reached) {
805 av_log(s, AV_LOG_WARNING, "truncated file\n");
811 value = av_malloc(chunk_size + 1);
813 av_log(s, AV_LOG_ERROR,
814 "out of memory, unable to read INFO tag\n");
815 return AVERROR(ENOMEM);
818 AV_WL32(key, chunk_code);
820 if (avio_read(pb, value, chunk_size) != chunk_size) {
822 av_log(s, AV_LOG_WARNING,
823 "premature end of file while reading INFO tag\n");
827 value[chunk_size] = 0;
829 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
834 #endif /* CONFIG_DEMUXERS */