2 * RIFF common functions and data
3 * Copyright (c) 2000 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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"
28 #include "libavutil/avassert.h"
30 /* Note: when encoding, the first matching tag is used, so order is
31 important if multiple tags possible for a given codec.
32 Note also that this list is used for more than just riff, other
35 const AVCodecTag ff_codec_bmp_tags[] = {
36 { AV_CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
37 { AV_CODEC_ID_H264, MKTAG('h', '2', '6', '4') },
38 { AV_CODEC_ID_H264, MKTAG('X', '2', '6', '4') },
39 { AV_CODEC_ID_H264, MKTAG('x', '2', '6', '4') },
40 { AV_CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') },
41 { AV_CODEC_ID_H264, MKTAG('D', 'A', 'V', 'C') },
42 { AV_CODEC_ID_H264, MKTAG('S', 'M', 'V', '2') },
43 { AV_CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') },
44 { AV_CODEC_ID_H264, MKTAG('Q', '2', '6', '4') }, /* QNAP surveillance system */
45 { AV_CODEC_ID_H264, MKTAG('V', '2', '6', '4') },
46 { AV_CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
47 { AV_CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
48 { AV_CODEC_ID_H263, MKTAG('T', '2', '6', '3') },
49 { AV_CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
50 { AV_CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
51 { AV_CODEC_ID_H263, MKTAG('Z', 'y', 'G', 'o') },
52 { AV_CODEC_ID_H263, MKTAG('M', '2', '6', '3') },
53 { AV_CODEC_ID_H263, MKTAG('l', 's', 'v', 'm') },
54 { AV_CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
55 { AV_CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
56 { AV_CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
57 { AV_CODEC_ID_H263, MKTAG('U', '2', '6', '3') },
58 { AV_CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') },
59 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
60 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') },
61 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
62 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
63 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
64 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */
65 { AV_CODEC_ID_MPEG4, MKTAG('Z', 'M', 'P', '4') }, /* some broken avi use this */
66 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
67 { AV_CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
68 { AV_CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
69 { AV_CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
70 { AV_CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') },
71 { AV_CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') },
72 { AV_CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') },
73 { AV_CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') },
74 { AV_CODEC_ID_MPEG4, MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
75 { AV_CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') },
76 { AV_CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') },
77 { AV_CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') },
78 { AV_CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') },
79 { AV_CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') },
80 { AV_CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') },
81 { AV_CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') },
82 { AV_CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') },
83 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
84 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
85 { AV_CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
86 { AV_CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
87 { AV_CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') },
88 { AV_CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') },
89 { AV_CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
90 { AV_CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') },
91 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
92 { AV_CODEC_ID_MPEG4, MKTAG('S', 'N', '4', '0') },
93 { AV_CODEC_ID_MPEG4, MKTAG('V', 'S', 'P', 'X') },
94 { AV_CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
95 { AV_CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
96 { AV_CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
97 { AV_CODEC_ID_MPEG4, MKTAG('S', 'M', '4', 'V') },
98 { AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'X') },
99 { AV_CODEC_ID_MPEG4, MKTAG('D', 'r', 'e', 'X') },
100 { AV_CODEC_ID_MPEG4, MKTAG('Q', 'M', 'P', '4') }, /* QNAP Systems */
101 { AV_CODEC_ID_MPEG4, MKTAG('P', 'L', 'V', '1') }, /* Pelco DVR MPEG-4 */
102 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
103 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
104 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
105 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
106 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
107 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
108 { AV_CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') },
109 { AV_CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
110 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
111 { AV_CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
112 { AV_CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
113 { AV_CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
114 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
115 { AV_CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
116 { AV_CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
117 { AV_CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
118 { AV_CODEC_ID_WMV2, MKTAG('G', 'X', 'V', 'E') },
119 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
120 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
121 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
122 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
123 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
124 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') },
125 { AV_CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
126 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
127 { AV_CODEC_ID_DVVIDEO, MKTAG('C', 'D', 'V', '5') }, /* Canopus DV */
128 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') },
129 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 's') },
130 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '1') },
131 { AV_CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'i', 's') },
132 { AV_CODEC_ID_DVVIDEO, MKTAG('p', 'd', 'v', 'c') },
133 { AV_CODEC_ID_DVVIDEO, MKTAG('S', 'L', '2', '5') },
134 { AV_CODEC_ID_DVVIDEO, MKTAG('S', 'L', 'D', 'V') },
135 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
136 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
137 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
138 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') },
139 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
140 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') },
141 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
142 { AV_CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) },
143 { AV_CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) },
144 { AV_CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 16) },
145 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') },
146 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') },
147 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
148 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('s', 'l', 'i', 'f') },
149 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('E', 'M', '2', 'V') },
150 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
151 { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', 'v') },
152 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('B', 'W', '1', '0') },
153 { AV_CODEC_ID_MPEG1VIDEO, MKTAG('X', 'M', 'P', 'G') }, /* Xing MPEG intra only */
154 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
155 { AV_CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
156 { AV_CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') },
157 { AV_CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') },
158 { AV_CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
159 { AV_CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
160 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
161 { AV_CODEC_ID_JPEGLS, MKTAG('M', 'J', 'P', 'G') },
162 { AV_CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
163 { AV_CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') },
164 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') },
165 { AV_CODEC_ID_AVRN, MKTAG('A', 'V', 'R', 'n') },
166 { AV_CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') },
167 { AV_CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') },
168 { AV_CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
169 { AV_CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
170 { AV_CODEC_ID_MJPEG, MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
171 { AV_CODEC_ID_MJPEG, MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
172 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '1') },
173 { AV_CODEC_ID_MJPEG, MKTAG('A', 'V', 'I', '2') },
174 { AV_CODEC_ID_MJPEG, MKTAG('M', 'T', 'S', 'J') },
175 { AV_CODEC_ID_MJPEG, MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
176 { AV_CODEC_ID_MJPEG, MKTAG('M', 'M', 'J', 'P') },
177 { AV_CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
178 { AV_CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') },
179 { AV_CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
180 { AV_CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) },
181 { AV_CODEC_ID_RAWVIDEO, MKTAG( 3 , 0 , 0 , 0 ) },
182 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
183 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') },
184 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
185 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', '4', '2', '2') },
186 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'N', 'V') },
187 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'V') },
188 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'N', 'Y') },
189 { AV_CODEC_ID_RAWVIDEO, MKTAG('u', 'y', 'v', '1') },
190 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'V', 'u', '1') },
191 { AV_CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') },
192 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', 's') },
193 { AV_CODEC_ID_RAWVIDEO, MKTAG('y', 'u', 'v', '2') },
194 { AV_CODEC_ID_RAWVIDEO, MKTAG('P', '4', '2', '2') },
195 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') },
196 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '6') },
197 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '2', '4') },
198 { AV_CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') },
199 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'Y', 'U', 'Y') },
200 { AV_CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') },
201 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') },
202 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '8', ' ', ' ') },
203 { AV_CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') },
204 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
205 { AV_CODEC_ID_RAWVIDEO, MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
206 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', '1') },
207 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '1', '2') },
208 { AV_CODEC_ID_RAWVIDEO, MKTAG('N', 'V', '2', '1') },
209 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '1', 'B') },
210 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', 'B') },
211 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'V', '9') },
212 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'U', '9') },
213 { AV_CODEC_ID_RAWVIDEO, MKTAG('a', 'u', 'v', '2') },
214 { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', 'Y', 'U') },
215 { AV_CODEC_ID_FRWU, MKTAG('F', 'R', 'W', 'U') },
216 { AV_CODEC_ID_R10K, MKTAG('R', '1', '0', 'k') },
217 { AV_CODEC_ID_R210, MKTAG('r', '2', '1', '0') },
218 { AV_CODEC_ID_V210, MKTAG('v', '2', '1', '0') },
219 { AV_CODEC_ID_V308, MKTAG('v', '3', '0', '8') },
220 { AV_CODEC_ID_V408, MKTAG('v', '4', '0', '8') },
221 { AV_CODEC_ID_AYUV, MKTAG('A', 'Y', 'U', 'V') },
222 { AV_CODEC_ID_V410, MKTAG('v', '4', '1', '0') },
223 { AV_CODEC_ID_YUV4, MKTAG('y', 'u', 'v', '4') },
224 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
225 { AV_CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
226 { AV_CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') },
227 { AV_CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') },
228 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
229 { AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },
230 { AV_CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },
231 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },
232 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },
233 { AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },
234 { AV_CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') },
235 { AV_CODEC_ID_VP6F, MKTAG('F', 'L', 'V', '4') },
236 { AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },
237 { AV_CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
238 { AV_CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
239 { AV_CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
240 { AV_CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
241 { AV_CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
242 { AV_CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') },
243 { AV_CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
244 { AV_CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) },
245 { AV_CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) },
246 { AV_CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
247 { AV_CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
248 { AV_CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
249 { AV_CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
250 { AV_CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
251 { AV_CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
252 { AV_CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
253 { AV_CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
254 { AV_CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') },
255 { AV_CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
256 { AV_CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
257 { AV_CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') },
258 { AV_CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
259 { AV_CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
260 { AV_CODEC_ID_FLV1, MKTAG('S', '2', '6', '3') },
261 { AV_CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') },
262 { AV_CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
263 { AV_CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') },
264 { AV_CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') },
265 { AV_CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') },
266 { AV_CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') },
267 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') },
268 { AV_CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') },
269 { AV_CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') },
270 { AV_CODEC_ID_WMV3IMAGE, MKTAG('W', 'M', 'V', 'P') },
271 { AV_CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') },
272 { AV_CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') },
273 { AV_CODEC_ID_VC1IMAGE, MKTAG('W', 'V', 'P', '2') },
274 { AV_CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
275 { AV_CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
276 { AV_CODEC_ID_WNV1, MKTAG('Y', 'U', 'V', '8') },
277 { AV_CODEC_ID_AASC, MKTAG('A', 'A', 'S', '4') },
278 { AV_CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
279 { AV_CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
280 { AV_CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') },
281 { AV_CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') },
282 { AV_CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') },
283 { AV_CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') },
284 { AV_CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') },
285 { AV_CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') },
286 { AV_CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') },
287 { AV_CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') },
288 { AV_CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') },
289 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'C') },
290 { AV_CODEC_ID_JPEG2000, MKTAG('L', 'J', '2', 'K') },
291 { AV_CODEC_ID_JPEG2000, MKTAG('I', 'P', 'J', '2') },
292 { AV_CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') },
293 { AV_CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') },
294 { AV_CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') },
295 { AV_CODEC_ID_PNG, MKTAG('P', 'N', 'G', '1') },
296 { AV_CODEC_ID_CLJR, MKTAG('C', 'L', 'J', 'R') },
297 { AV_CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
298 { AV_CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') },
299 { AV_CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') },
300 { AV_CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') },
301 { AV_CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') },
302 { AV_CODEC_ID_AURA, MKTAG('A', 'U', 'R', 'A') },
303 { AV_CODEC_ID_AURA2, MKTAG('A', 'U', 'R', '2') },
304 { AV_CODEC_ID_DPX, MKTAG('d', 'p', 'x', ' ') },
305 { AV_CODEC_ID_KGV1, MKTAG('K', 'G', 'V', '1') },
306 { AV_CODEC_ID_LAGARITH, MKTAG('L', 'A', 'G', 'S') },
307 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '2') },
308 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '3') },
309 { AV_CODEC_ID_G2M, MKTAG('G', '2', 'M', '4') },
310 { AV_CODEC_ID_AMV, MKTAG('A', 'M', 'V', 'F') },
311 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'A') },
312 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'R', 'G') },
313 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '0') },
314 { AV_CODEC_ID_UTVIDEO, MKTAG('U', 'L', 'Y', '2') },
315 { AV_CODEC_ID_VBLE, MKTAG('V', 'B', 'L', 'E') },
316 { AV_CODEC_ID_ESCAPE130, MKTAG('E', '1', '3', '0') },
317 { AV_CODEC_ID_DXTORY, MKTAG('x', 't', 'o', 'r') },
318 { AV_CODEC_ID_ZEROCODEC, MKTAG('Z', 'E', 'C', 'O') },
319 { AV_CODEC_ID_Y41P, MKTAG('Y', '4', '1', 'P') },
320 { AV_CODEC_ID_FLIC, MKTAG('A', 'F', 'L', 'C') },
321 { AV_CODEC_ID_EXR, MKTAG('e', 'x', 'r', ' ') },
322 { AV_CODEC_ID_MSS1, MKTAG('M', 'S', 'S', '1') },
323 { AV_CODEC_ID_MSA1, MKTAG('M', 'S', 'A', '1') },
324 { AV_CODEC_ID_TSCC2, MKTAG('T', 'S', 'C', '2') },
325 { AV_CODEC_ID_MTS2, MKTAG('M', 'T', 'S', '2') },
326 { AV_CODEC_ID_CLLC, MKTAG('C', 'L', 'L', 'C') },
327 { AV_CODEC_ID_MSS2, MKTAG('M', 'S', 'S', '2') },
328 { AV_CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') },
329 { AV_CODEC_ID_012V, MKTAG('0', '1', '2', 'v') },
330 { AV_CODEC_ID_012V, MKTAG('a', '1', '2', 'v') },
331 { AV_CODEC_ID_NONE, 0 }
334 const AVCodecTag ff_codec_wav_tags[] = {
335 { AV_CODEC_ID_PCM_S16LE, 0x0001 },
336 { AV_CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */
337 { AV_CODEC_ID_PCM_S24LE, 0x0001 },
338 { AV_CODEC_ID_PCM_S32LE, 0x0001 },
339 { AV_CODEC_ID_ADPCM_MS, 0x0002 },
340 { AV_CODEC_ID_PCM_F32LE, 0x0003 },
341 { AV_CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */
342 { AV_CODEC_ID_PCM_ALAW, 0x0006 },
343 { AV_CODEC_ID_PCM_MULAW, 0x0007 },
344 { AV_CODEC_ID_WMAVOICE, 0x000A },
345 { AV_CODEC_ID_ADPCM_IMA_OKI, 0x0010 },
346 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0011 },
347 { AV_CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */
348 { AV_CODEC_ID_ADPCM_IMA_OKI, 0x0017 },
349 { AV_CODEC_ID_ADPCM_YAMAHA, 0x0020 },
350 { AV_CODEC_ID_TRUESPEECH, 0x0022 },
351 { AV_CODEC_ID_GSM_MS, 0x0031 },
352 { AV_CODEC_ID_AMR_NB, 0x0038 }, /* rogue format number */
353 { AV_CODEC_ID_G723_1, 0x0042 },
354 { AV_CODEC_ID_ADPCM_G726, 0x0045 },
355 { AV_CODEC_ID_MP2, 0x0050 },
356 { AV_CODEC_ID_MP3, 0x0055 },
357 { AV_CODEC_ID_AMR_NB, 0x0057 },
358 { AV_CODEC_ID_AMR_WB, 0x0058 },
359 { AV_CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */
360 { AV_CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */
361 { AV_CODEC_ID_ADPCM_IMA_WAV, 0x0069 },
362 { AV_CODEC_ID_VOXWARE, 0x0075 },
363 { AV_CODEC_ID_AAC, 0x00ff },
364 { AV_CODEC_ID_SIPR, 0x0130 },
365 { AV_CODEC_ID_WMAV1, 0x0160 },
366 { AV_CODEC_ID_WMAV2, 0x0161 },
367 { AV_CODEC_ID_WMAPRO, 0x0162 },
368 { AV_CODEC_ID_WMALOSSLESS, 0x0163 },
369 { AV_CODEC_ID_ADPCM_CT, 0x0200 },
370 { AV_CODEC_ID_ATRAC3, 0x0270 },
371 { AV_CODEC_ID_ADPCM_G722, 0x028F },
372 { AV_CODEC_ID_IMC, 0x0401 },
373 { AV_CODEC_ID_IAC, 0x0402 },
374 { AV_CODEC_ID_GSM_MS, 0x1500 },
375 { AV_CODEC_ID_TRUESPEECH, 0x1501 },
376 { AV_CODEC_ID_AAC, 0x1600 }, /* ADTS AAC */
377 { AV_CODEC_ID_AAC_LATM, 0x1602 },
378 { AV_CODEC_ID_AC3, 0x2000 },
379 { AV_CODEC_ID_DTS, 0x2001 },
380 { AV_CODEC_ID_SONIC, 0x2048 },
381 { AV_CODEC_ID_SONIC_LS, 0x2048 },
382 { AV_CODEC_ID_PCM_MULAW, 0x6c75 },
383 { AV_CODEC_ID_AAC, 0x706d },
384 { AV_CODEC_ID_AAC, 0x4143 },
385 { AV_CODEC_ID_G723_1, 0xA100 },
386 { AV_CODEC_ID_AAC, 0xA106 },
387 { AV_CODEC_ID_SPEEX, 0xA109 },
388 { AV_CODEC_ID_FLAC, 0xF1AC },
389 { AV_CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
390 { AV_CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
391 { AV_CODEC_ID_NONE, 0 },
394 const AVCodecGuid ff_codec_wav_guids[] = {
395 {AV_CODEC_ID_AC3, {0x2C,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
396 {AV_CODEC_ID_ATRAC3P, {0xBF,0xAA,0x23,0xE9,0x58,0xCB,0x71,0x44,0xA1,0x19,0xFF,0xFA,0x01,0xE4,0xCE,0x62}},
397 {AV_CODEC_ID_EAC3, {0xAF,0x87,0xFB,0xA7,0x02,0x2D,0xFB,0x42,0xA4,0xD4,0x05,0xCD,0x93,0x84,0x3B,0xDD}},
398 {AV_CODEC_ID_MP2, {0x2B,0x80,0x6D,0xE0,0x46,0xDB,0xCF,0x11,0xB4,0xD1,0x00,0x80,0x5F,0x6C,0xBB,0xEA}},
402 const AVMetadataConv ff_riff_info_conv[] = {
403 { "IART", "artist" },
404 { "ICMT", "comment" },
405 { "ICOP", "copyright" },
408 { "ILNG", "language" },
412 { "ISFT", "encoder" },
413 { "ISMP", "timecode" },
414 { "ITCH", "encoded_by"},
419 int64_t ff_start_tag(AVIOContext *pb, const char *tag)
421 ffio_wfourcc(pb, tag);
423 return avio_tell(pb);
426 void ff_end_tag(AVIOContext *pb, int64_t start)
431 avio_seek(pb, start - 4, SEEK_SET);
432 avio_wl32(pb, (uint32_t)(pos - start));
433 avio_seek(pb, pos, SEEK_SET);
436 /* WAVEFORMATEX header */
437 /* returns the size or -1 on error */
438 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
440 int bps, blkalign, bytespersec, frame_size;
442 int waveformatextensible;
444 uint8_t *riff_extradata= temp;
445 uint8_t *riff_extradata_start= temp;
447 if(!enc->codec_tag || enc->codec_tag > 0xffff)
450 /* We use the known constant frame size for the codec if known, otherwise
451 fallback to using AVCodecContext.frame_size, which is not as reliable
452 for indicating packet duration */
453 frame_size = av_get_audio_frame_duration(enc, 0);
455 frame_size = enc->frame_size;
457 waveformatextensible = (enc->channels > 2 && enc->channel_layout)
458 || enc->sample_rate > 48000
459 || av_get_bits_per_sample(enc->codec_id) > 16;
461 if (waveformatextensible) {
462 avio_wl16(pb, 0xfffe);
464 avio_wl16(pb, enc->codec_tag);
466 avio_wl16(pb, enc->channels);
467 avio_wl32(pb, enc->sample_rate);
468 if (enc->codec_id == AV_CODEC_ID_ATRAC3 ||
469 enc->codec_id == AV_CODEC_ID_G723_1 ||
470 enc->codec_id == AV_CODEC_ID_GSM_MS ||
471 enc->codec_id == AV_CODEC_ID_MP2 ||
472 enc->codec_id == AV_CODEC_ID_MP3) {
475 if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
476 if (enc->bits_per_coded_sample)
477 bps = enc->bits_per_coded_sample;
479 bps = 16; // default to 16
482 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
483 av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
486 if (enc->codec_id == AV_CODEC_ID_MP2 || enc->codec_id == AV_CODEC_ID_MP3) {
487 /* this is wrong, but it seems many demuxers do not work if this is set
489 blkalign = frame_size;
490 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
491 } else if (enc->codec_id == AV_CODEC_ID_AC3) {
492 blkalign = 3840; //maximum bytes per frame
493 } else if (enc->codec_id == AV_CODEC_ID_AAC) {
494 blkalign = 768 * enc->channels; //maximum bytes per frame
495 } else if (enc->codec_id == AV_CODEC_ID_G723_1) {
497 } else if (enc->block_align != 0) { /* specified by the codec */
498 blkalign = enc->block_align;
500 blkalign = bps * enc->channels / av_gcd(8, bps);
501 if (enc->codec_id == AV_CODEC_ID_PCM_U8 ||
502 enc->codec_id == AV_CODEC_ID_PCM_S24LE ||
503 enc->codec_id == AV_CODEC_ID_PCM_S32LE ||
504 enc->codec_id == AV_CODEC_ID_PCM_F32LE ||
505 enc->codec_id == AV_CODEC_ID_PCM_F64LE ||
506 enc->codec_id == AV_CODEC_ID_PCM_S16LE) {
507 bytespersec = enc->sample_rate * blkalign;
508 } else if (enc->codec_id == AV_CODEC_ID_G723_1) {
511 bytespersec = enc->bit_rate / 8;
513 avio_wl32(pb, bytespersec); /* bytes per second */
514 avio_wl16(pb, blkalign); /* block align */
515 avio_wl16(pb, bps); /* bits per sample */
516 if (enc->codec_id == AV_CODEC_ID_MP3) {
518 bytestream_put_le16(&riff_extradata, 1); /* wID */
519 bytestream_put_le32(&riff_extradata, 2); /* fdwFlags */
520 bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
521 bytestream_put_le16(&riff_extradata, 1); /* nFramesPerBlock */
522 bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
523 } else if (enc->codec_id == AV_CODEC_ID_MP2) {
525 bytestream_put_le16(&riff_extradata, 2); /* fwHeadLayer */
526 bytestream_put_le32(&riff_extradata, enc->bit_rate); /* dwHeadBitrate */
527 bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
528 bytestream_put_le16(&riff_extradata, 0); /* fwHeadModeExt */
529 bytestream_put_le16(&riff_extradata, 1); /* wHeadEmphasis */
530 bytestream_put_le16(&riff_extradata, 16); /* fwHeadFlags */
531 bytestream_put_le32(&riff_extradata, 0); /* dwPTSLow */
532 bytestream_put_le32(&riff_extradata, 0); /* dwPTSHigh */
533 } else if (enc->codec_id == AV_CODEC_ID_G723_1) {
535 bytestream_put_le32(&riff_extradata, 0x9ace0002); /* extradata needed for msacm g723.1 codec */
536 bytestream_put_le32(&riff_extradata, 0xaea2f732);
537 bytestream_put_le16(&riff_extradata, 0xacde);
538 } else if (enc->codec_id == AV_CODEC_ID_GSM_MS || enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
540 bytestream_put_le16(&riff_extradata, frame_size); /* wSamplesPerBlock */
541 } else if(enc->extradata_size){
542 riff_extradata_start= enc->extradata;
543 riff_extradata= enc->extradata + enc->extradata_size;
544 hdrsize += enc->extradata_size;
546 if(waveformatextensible) { /* write WAVEFORMATEXTENSIBLE extensions */
548 avio_wl16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
549 avio_wl16(pb, bps); /* ValidBitsPerSample || SamplesPerBlock || Reserved */
550 avio_wl32(pb, enc->channel_layout); /* dwChannelMask */
551 avio_wl32(pb, enc->codec_tag); /* GUID + next 3 */
552 avio_wl32(pb, 0x00100000);
553 avio_wl32(pb, 0xAA000080);
554 avio_wl32(pb, 0x719B3800);
556 avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
558 avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
567 /* BITMAPINFOHEADER header */
568 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
570 avio_wl32(pb, 40 + enc->extradata_size); /* size */
571 avio_wl32(pb, enc->width);
572 //We always store RGB TopDown
573 avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
574 avio_wl16(pb, 1); /* planes */
576 avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
577 /* compression type */
578 avio_wl32(pb, enc->codec_tag);
579 avio_wl32(pb, (enc->width * enc->height * (enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24)+7) / 8);
585 avio_write(pb, enc->extradata, enc->extradata_size);
587 if (!for_asf && enc->extradata_size & 1)
591 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, 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 fallback to 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 : 8*stream->sample_rate;
616 gcd= av_gcd(*au_scale, *au_rate);
621 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
623 int len = strlen(str);
626 ffio_wfourcc(pb, tag);
628 avio_put_str(pb, str);
634 static const char riff_tags[][5] = {
635 "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
636 "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
637 "IPRT", "ISBJ", "ISFT", "ISHP", "ISMP", "ISRC", "ISRF", "ITCH",
641 static int riff_has_valid_tags(AVFormatContext *s)
645 for (i = 0; *riff_tags[i]; i++) {
646 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], NULL, AV_DICT_MATCH_CASE)))
670 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->channels = avio_rl16(pb);
691 codec->sample_rate = avio_rl32(pb);
692 codec->bit_rate = avio_rl32(pb) * 8;
693 codec->block_align = avio_rl16(pb);
694 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
695 codec->bits_per_coded_sample = 8;
697 codec->bits_per_coded_sample = avio_rl16(pb);
699 codec->codec_tag = 0;
701 codec->codec_tag = id;
702 codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
704 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */
705 int cbSize = avio_rl16(pb); /* cbSize */
707 cbSize = FFMIN(size, cbSize);
708 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
709 ff_asf_guid subformat;
710 int bps = avio_rl16(pb);
712 codec->bits_per_coded_sample = bps;
713 codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
714 ff_get_guid(pb, &subformat);
715 if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) {
716 codec->codec_tag = AV_RL32(subformat);
717 codec->codec_id = ff_wav_codec_get_id(codec->codec_tag, codec->bits_per_coded_sample);
719 codec->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);
720 if (!codec->codec_id)
721 av_log(codec, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat));
726 codec->extradata_size = cbSize;
728 av_free(codec->extradata);
729 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
730 if (!codec->extradata)
731 return AVERROR(ENOMEM);
732 avio_read(pb, codec->extradata, codec->extradata_size);
736 /* It is possible for the chunk to contain garbage at the end */
740 if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {
741 /* channels and sample_rate values are those prior to applying SBR and/or PS */
743 codec->sample_rate = 0;
745 /* override bits_per_coded_sample for G.726 */
746 if (codec->codec_id == AV_CODEC_ID_ADPCM_G726 && codec->sample_rate)
747 codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
753 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
756 id = ff_codec_get_id(ff_codec_wav_tags, tag);
760 if (id == AV_CODEC_ID_PCM_S16LE)
761 id = ff_get_pcm_codec_id(bps, 0, 0, ~1);
762 else if (id == AV_CODEC_ID_PCM_F32LE)
763 id = ff_get_pcm_codec_id(bps, 1, 0, 0);
765 if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)
766 id = AV_CODEC_ID_PCM_ZORK;
770 int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize)
773 if(esize) *esize = avio_rl32(pb);
775 st->codec->width = avio_rl32(pb);
776 st->codec->height = (int32_t)avio_rl32(pb);
777 avio_rl16(pb); /* planes */
778 st->codec->bits_per_coded_sample= avio_rl16(pb); /* depth */
779 tag1 = avio_rl32(pb);
780 avio_rl32(pb); /* ImageSize */
781 avio_rl32(pb); /* XPelsPerMeter */
782 avio_rl32(pb); /* YPelsPerMeter */
783 avio_rl32(pb); /* ClrUsed */
784 avio_rl32(pb); /* ClrImportant */
788 void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
790 av_assert0(sizeof(*g) == 16); //compiler will optimize this out
791 if (avio_read(s, *g, sizeof(*g)) < (int)sizeof(*g))
792 memset(*g, 0, sizeof(*g));
795 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
798 for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++) {
799 if (!ff_guidcmp(guids[i].guid, guid))
802 return AV_CODEC_ID_NONE;
805 int ff_read_riff_info(AVFormatContext *s, int64_t size)
807 int64_t start, end, cur;
808 AVIOContext *pb = s->pb;
810 start = avio_tell(pb);
813 while ((cur = avio_tell(pb)) >= 0 && cur <= end - 8 /* = tag + size */) {
819 chunk_code = avio_rl32(pb);
820 chunk_size = avio_rl32(pb);
822 if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
823 avio_seek(pb, -9, SEEK_CUR);
824 chunk_code = avio_rl32(pb);
825 chunk_size = avio_rl32(pb);
826 if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
827 av_log(s, AV_LOG_WARNING, "too big INFO subchunk\n");
828 return AVERROR_INVALIDDATA;
832 chunk_size += (chunk_size & 1);
836 avio_skip(pb, chunk_size);
840 value = av_mallocz(chunk_size + 1);
842 av_log(s, AV_LOG_ERROR, "out of memory, unable to read INFO tag\n");
843 return AVERROR(ENOMEM);
846 AV_WL32(key, chunk_code);
848 if (avio_read(pb, value, chunk_size) != chunk_size) {
849 av_log(s, AV_LOG_WARNING, "premature end of file while reading INFO tag\n");
852 av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
857 #endif // CONFIG_DEMUXERS