bump minor avcodec version for libxvid codec id change (r22489)
[libav.git] / libavcodec / avcodec.h
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1/*
2 * copyright (c) 2001 Fabrice Bellard
3 *
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4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
b78e7197 9 * version 2.1 of the License, or (at your option) any later version.
04d7f601 10 *
b78e7197 11 * FFmpeg is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
b78e7197 17 * License along with FFmpeg; if not, write to the Free Software
e5a389a1 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
20
98790382
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21#ifndef AVCODEC_AVCODEC_H
22#define AVCODEC_AVCODEC_H
a96b68b7 23
36df8805 24/**
bad5537e 25 * @file libavcodec/avcodec.h
f5bccd85 26 * external API header
36df8805
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27 */
28
c60208e7 29#include <errno.h>
76a448ed 30#include "libavutil/avutil.h"
de6d9b64 31
dd1c8f3e 32#define LIBAVCODEC_VERSION_MAJOR 52
74dc70c4 33#define LIBAVCODEC_VERSION_MINOR 59
5aea268d 34#define LIBAVCODEC_VERSION_MICRO 0
e97ac1e6 35
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36#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
37 LIBAVCODEC_VERSION_MINOR, \
38 LIBAVCODEC_VERSION_MICRO)
39#define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \
40 LIBAVCODEC_VERSION_MINOR, \
41 LIBAVCODEC_VERSION_MICRO)
bb270c08 42#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
5aa083ee 43
bb270c08 44#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
ce2749d2 45
8da9266c 46#define AV_NOPTS_VALUE INT64_C(0x8000000000000000)
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47#define AV_TIME_BASE 1000000
48#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
9740beff 49
7ebf5927 50/**
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51 * Identifies the syntax and semantics of the bitstream.
52 * The principle is roughly:
53 * Two decoders with the same ID can decode the same streams.
54 * Two encoders with the same ID can encode compatible streams.
55 * There may be slight deviations from the principle due to implementation
56 * details.
7ebf5927 57 *
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58 * If you add a codec ID to this list, add it so that
59 * 1. no value of a existing codec ID changes (that would break ABI),
60 * 2. it is as close as possible to similar codecs.
7ebf5927 61 */
de6d9b64 62enum CodecID {
115329f1 63 CODEC_ID_NONE,
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64
65 /* video codecs */
de6d9b64 66 CODEC_ID_MPEG1VIDEO,
0e373b95 67 CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
fb364ada 68 CODEC_ID_MPEG2VIDEO_XVMC,
c6148de2 69 CODEC_ID_H261,
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70 CODEC_ID_H263,
71 CODEC_ID_RV10,
68b94c35 72 CODEC_ID_RV20,
de6d9b64 73 CODEC_ID_MJPEG,
b135d9fb 74 CODEC_ID_MJPEGB,
b1e6b355 75 CODEC_ID_LJPEG,
5e83dec4 76 CODEC_ID_SP5X,
5639729b 77 CODEC_ID_JPEGLS,
bf89e6b1 78 CODEC_ID_MPEG4,
de6d9b64 79 CODEC_ID_RAWVIDEO,
84afee34
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80 CODEC_ID_MSMPEG4V1,
81 CODEC_ID_MSMPEG4V2,
82 CODEC_ID_MSMPEG4V3,
e1a9dbff 83 CODEC_ID_WMV1,
b50eef3a 84 CODEC_ID_WMV2,
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85 CODEC_ID_H263P,
86 CODEC_ID_H263I,
d4f5d74a 87 CODEC_ID_FLV1,
be8ffec9 88 CODEC_ID_SVQ1,
8b82a956 89 CODEC_ID_SVQ3,
020fcc94 90 CODEC_ID_DVVIDEO,
11f18faf 91 CODEC_ID_HUFFYUV,
f70f7c6d 92 CODEC_ID_CYUV,
0da71265 93 CODEC_ID_H264,
deabd4fd 94 CODEC_ID_INDEO3,
d86053a4 95 CODEC_ID_VP3,
f44ee2c3 96 CODEC_ID_THEORA,
3d2e8cce 97 CODEC_ID_ASV1,
9b56edf5 98 CODEC_ID_ASV2,
5e20f836 99 CODEC_ID_FFV1,
e2a7bb28 100 CODEC_ID_4XM,
be3564ed 101 CODEC_ID_VCR1,
3aff069b 102 CODEC_ID_CLJR,
c3bf0288 103 CODEC_ID_MDEC,
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104 CODEC_ID_ROQ,
105 CODEC_ID_INTERPLAY_VIDEO,
9937e686
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106 CODEC_ID_XAN_WC3,
107 CODEC_ID_XAN_WC4,
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108 CODEC_ID_RPZA,
109 CODEC_ID_CINEPAK,
110 CODEC_ID_WS_VQA,
111 CODEC_ID_MSRLE,
112 CODEC_ID_MSVIDEO1,
4120a53a 113 CODEC_ID_IDCIN,
1dc1ed99 114 CODEC_ID_8BPS,
11e29a41 115 CODEC_ID_SMC,
42cad81a 116 CODEC_ID_FLIC,
9a4117d5 117 CODEC_ID_TRUEMOTION1,
fafa0b75 118 CODEC_ID_VMDVIDEO,
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119 CODEC_ID_MSZH,
120 CODEC_ID_ZLIB,
070ed1bc 121 CODEC_ID_QTRLE,
791e7b83 122 CODEC_ID_SNOW,
9d53d58e 123 CODEC_ID_TSCC,
d0a0bbd2 124 CODEC_ID_ULTI,
d08d7142 125 CODEC_ID_QDRAW,
ab711b3c 126 CODEC_ID_VIXL,
acfd8f0f 127 CODEC_ID_QPEG,
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128 CODEC_ID_XVID,
129 CODEC_ID_PNG,
130 CODEC_ID_PPM,
131 CODEC_ID_PBM,
132 CODEC_ID_PGM,
133 CODEC_ID_PGMYUV,
134 CODEC_ID_PAM,
f37b9768 135 CODEC_ID_FFVHUFF,
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136 CODEC_ID_RV30,
137 CODEC_ID_RV40,
10b9c374 138 CODEC_ID_VC1,
21aa398f 139 CODEC_ID_WMV3,
9c7fb608 140 CODEC_ID_LOCO,
a8a15e9d 141 CODEC_ID_WNV1,
589f8220 142 CODEC_ID_AASC,
856dbbff 143 CODEC_ID_INDEO2,
b81f8949 144 CODEC_ID_FRAPS,
64af6168 145 CODEC_ID_TRUEMOTION2,
9fa62f2a 146 CODEC_ID_BMP,
e0f80bd7 147 CODEC_ID_CSCD,
4e114829 148 CODEC_ID_MMVIDEO,
9c8d8e84 149 CODEC_ID_ZMBV,
26376701 150 CODEC_ID_AVS,
348efc18 151 CODEC_ID_SMACKVIDEO,
dfca23e3 152 CODEC_ID_NUV,
fd7b1991 153 CODEC_ID_KMVC,
0919e788 154 CODEC_ID_FLASHSV,
20ffddb9 155 CODEC_ID_CAVS,
f31065f6 156 CODEC_ID_JPEG2000,
eb57c889 157 CODEC_ID_VMNC,
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158 CODEC_ID_VP5,
159 CODEC_ID_VP6,
160 CODEC_ID_VP6F,
3689cf16 161 CODEC_ID_TARGA,
72450e50 162 CODEC_ID_DSICINVIDEO,
29f86228 163 CODEC_ID_TIERTEXSEQVIDEO,
a991b1fe 164 CODEC_ID_TIFF,
06d392a7 165 CODEC_ID_GIF,
3edeab82 166 CODEC_ID_FFH264,
33a0dd37 167 CODEC_ID_DXA,
52b6bad2 168 CODEC_ID_DNXHD,
efb0c399 169 CODEC_ID_THP,
2d99eed1 170 CODEC_ID_SGI,
9a0ddd09 171 CODEC_ID_C93,
1e6c6759 172 CODEC_ID_BETHSOFTVID,
b46d68c6 173 CODEC_ID_PTX,
1ca779e7 174 CODEC_ID_TXD,
91fc2cf1 175 CODEC_ID_VP6A,
8787d837 176 CODEC_ID_AMV,
66f7679c 177 CODEC_ID_VB,
b4abe1d1 178 CODEC_ID_PCX,
d43df959 179 CODEC_ID_SUNRAST,
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180 CODEC_ID_INDEO4,
181 CODEC_ID_INDEO5,
a7129de5 182 CODEC_ID_MIMIC,
975cdc8f 183 CODEC_ID_RL2,
cb21e0a7
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184 CODEC_ID_8SVX_EXP,
185 CODEC_ID_8SVX_FIB,
40d26273 186 CODEC_ID_ESCAPE124,
782a58ec 187 CODEC_ID_DIRAC,
b64c096b 188 CODEC_ID_BFI,
495900f7 189 CODEC_ID_CMV,
974e0eee 190 CODEC_ID_MOTIONPIXELS,
cfc78718 191 CODEC_ID_TGV,
42b30357 192 CODEC_ID_TGQ,
d8964f3a 193 CODEC_ID_TQI,
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194 CODEC_ID_AURA,
195 CODEC_ID_AURA2,
97f92143 196 CODEC_ID_V210X,
a1fd2bc3 197 CODEC_ID_TMV,
ca0bb1c4 198 CODEC_ID_V210,
94d3d6a4 199 CODEC_ID_DPX,
c63ea92b 200 CODEC_ID_MAD,
d8b35b85 201 CODEC_ID_FRWU,
0aa6a518 202 CODEC_ID_FLASHSV2,
a3d995c1 203 CODEC_ID_CDGRAPHICS,
4aaab0a3 204 CODEC_ID_R210,
a1ae40fd 205 CODEC_ID_ANM,
4e5f42dd 206 CODEC_ID_BINKVIDEO,
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PR
207 CODEC_ID_IFF_ILBM,
208 CODEC_ID_IFF_BYTERUN1,
bf354122 209 CODEC_ID_KGV1,
a96b68b7 210
f5bccd85 211 /* various PCM "codecs" */
17179d2d 212 CODEC_ID_PCM_S16LE= 0x10000,
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213 CODEC_ID_PCM_S16BE,
214 CODEC_ID_PCM_U16LE,
215 CODEC_ID_PCM_U16BE,
216 CODEC_ID_PCM_S8,
217 CODEC_ID_PCM_U8,
218 CODEC_ID_PCM_MULAW,
219 CODEC_ID_PCM_ALAW,
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RD
220 CODEC_ID_PCM_S32LE,
221 CODEC_ID_PCM_S32BE,
222 CODEC_ID_PCM_U32LE,
223 CODEC_ID_PCM_U32BE,
224 CODEC_ID_PCM_S24LE,
225 CODEC_ID_PCM_S24BE,
226 CODEC_ID_PCM_U24LE,
227 CODEC_ID_PCM_U24BE,
228 CODEC_ID_PCM_S24DAUD,
a11c2a2c 229 CODEC_ID_PCM_ZORK,
725d86bf 230 CODEC_ID_PCM_S16LE_PLANAR,
1472b7dd 231 CODEC_ID_PCM_DVD,
aa29709e 232 CODEC_ID_PCM_F32BE,
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PR
233 CODEC_ID_PCM_F32LE,
234 CODEC_ID_PCM_F64BE,
235 CODEC_ID_PCM_F64LE,
5dd3707b 236 CODEC_ID_PCM_BLURAY,
0147f198 237
f5bccd85 238 /* various ADPCM codecs */
17179d2d 239 CODEC_ID_ADPCM_IMA_QT= 0x11000,
0147f198 240 CODEC_ID_ADPCM_IMA_WAV,
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241 CODEC_ID_ADPCM_IMA_DK3,
242 CODEC_ID_ADPCM_IMA_DK4,
2fdf638b 243 CODEC_ID_ADPCM_IMA_WS,
7d8379f2 244 CODEC_ID_ADPCM_IMA_SMJPEG,
0147f198 245 CODEC_ID_ADPCM_MS,
e2a7bb28 246 CODEC_ID_ADPCM_4XM,
fc384777
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247 CODEC_ID_ADPCM_XA,
248 CODEC_ID_ADPCM_ADX,
7d8379f2 249 CODEC_ID_ADPCM_EA,
e5966052 250 CODEC_ID_ADPCM_G726,
b3bfb299 251 CODEC_ID_ADPCM_CT,
659c3692 252 CODEC_ID_ADPCM_SWF,
2ff4524e 253 CODEC_ID_ADPCM_YAMAHA,
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254 CODEC_ID_ADPCM_SBPRO_4,
255 CODEC_ID_ADPCM_SBPRO_3,
256 CODEC_ID_ADPCM_SBPRO_2,
d1e0d21f 257 CODEC_ID_ADPCM_THP,
3a7f5d07 258 CODEC_ID_ADPCM_IMA_AMV,
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259 CODEC_ID_ADPCM_EA_R1,
260 CODEC_ID_ADPCM_EA_R3,
261 CODEC_ID_ADPCM_EA_R2,
7bb65d89 262 CODEC_ID_ADPCM_IMA_EA_SEAD,
fac84d3c 263 CODEC_ID_ADPCM_IMA_EA_EACS,
271b4095 264 CODEC_ID_ADPCM_EA_XAS,
861c63a2 265 CODEC_ID_ADPCM_EA_MAXIS_XA,
055dc116 266 CODEC_ID_ADPCM_IMA_ISS,
891f64b3 267
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268 /* AMR */
269 CODEC_ID_AMR_NB= 0x12000,
d663a1fd
MN
270 CODEC_ID_AMR_WB,
271
b8414bbd 272 /* RealAudio codecs*/
17179d2d 273 CODEC_ID_RA_144= 0x13000,
b8414bbd 274 CODEC_ID_RA_288,
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MM
275
276 /* various DPCM codecs */
17179d2d 277 CODEC_ID_ROQ_DPCM= 0x14000,
3ef8be2b 278 CODEC_ID_INTERPLAY_DPCM,
9937e686 279 CODEC_ID_XAN_DPCM,
d08d7142 280 CODEC_ID_SOL_DPCM,
115329f1 281
ba0dabbf 282 /* audio codecs */
17179d2d 283 CODEC_ID_MP2= 0x15000,
0e373b95 284 CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
17179d2d 285 CODEC_ID_AAC,
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286 CODEC_ID_AC3,
287 CODEC_ID_DTS,
288 CODEC_ID_VORBIS,
289 CODEC_ID_DVAUDIO,
290 CODEC_ID_WMAV1,
291 CODEC_ID_WMAV2,
292 CODEC_ID_MACE3,
293 CODEC_ID_MACE6,
294 CODEC_ID_VMDAUDIO,
295 CODEC_ID_SONIC,
296 CODEC_ID_SONIC_LS,
ac2570a8 297 CODEC_ID_FLAC,
1ede228a 298 CODEC_ID_MP3ADU,
d2a7718d 299 CODEC_ID_MP3ON4,
85ad5695 300 CODEC_ID_SHORTEN,
5df8a0c6 301 CODEC_ID_ALAC,
034eeaa1 302 CODEC_ID_WESTWOOD_SND1,
0e373b95 303 CODEC_ID_GSM, ///< as in Berlin toast format
d9b1c197 304 CODEC_ID_QDM2,
e0f7e329 305 CODEC_ID_COOK,
bf3027c8 306 CODEC_ID_TRUESPEECH,
a24c4a2a 307 CODEC_ID_TTA,
348efc18 308 CODEC_ID_SMACKAUDIO,
6c496518 309 CODEC_ID_QCELP,
730581f3 310 CODEC_ID_WAVPACK,
72450e50 311 CODEC_ID_DSICINAUDIO,
84ed36da 312 CODEC_ID_IMC,
185c7b6b 313 CODEC_ID_MUSEPACK7,
aad512b4 314 CODEC_ID_MLP,
f5bccd85 315 CODEC_ID_GSM_MS, /* as found in WAV */
10e26bc7 316 CODEC_ID_ATRAC3,
8950f828 317 CODEC_ID_VOXWARE,
bf4a1f17 318 CODEC_ID_APE,
636b13c5 319 CODEC_ID_NELLYMOSER,
12877faf 320 CODEC_ID_MUSEPACK8,
cb4ddf77 321 CODEC_ID_SPEEX,
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BL
322 CODEC_ID_WMAVOICE,
323 CODEC_ID_WMAPRO,
800b9c24 324 CODEC_ID_WMALOSSLESS,
b339f0c6 325 CODEC_ID_ATRAC3P,
2988c93d 326 CODEC_ID_EAC3,
faeedbbb 327 CODEC_ID_SIPR,
7f507b2d 328 CODEC_ID_MP1,
616e899c 329 CODEC_ID_TWINVQ,
9ba4821d 330 CODEC_ID_TRUEHD,
b24bbbb4 331 CODEC_ID_MP4ALS,
223e8df1 332 CODEC_ID_ATRAC1,
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333 CODEC_ID_BINKAUDIO_RDFT,
334 CODEC_ID_BINKAUDIO_DCT,
115329f1 335
240c1657 336 /* subtitle codecs */
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DB
337 CODEC_ID_DVD_SUBTITLE= 0x17000,
338 CODEC_ID_DVB_SUBTITLE,
0e373b95 339 CODEC_ID_TEXT, ///< raw UTF-8 text
7e2643ae 340 CODEC_ID_XSUB,
f9a9b350 341 CODEC_ID_SSA,
cc8c2c6a 342 CODEC_ID_MOV_TEXT,
c58b82a2 343 CODEC_ID_HDMV_PGS_SUBTITLE,
e58992e4 344 CODEC_ID_DVB_TELETEXT,
115329f1 345
7ce68923 346 /* other specific kind of codecs (generally used for attachments) */
f8d7c9d3
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347 CODEC_ID_TTF= 0x18000,
348
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349 CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
350
0e373b95 351 CODEC_ID_MPEG2TS= 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
f5bccd85 352 * stream (only used by libavformat) */
de6d9b64 353};
dcedf586 354
de6d9b64 355enum CodecType {
4a663d80 356 CODEC_TYPE_UNKNOWN = -1,
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357 CODEC_TYPE_VIDEO,
358 CODEC_TYPE_AUDIO,
985180a1 359 CODEC_TYPE_DATA,
240c1657 360 CODEC_TYPE_SUBTITLE,
f8d7c9d3 361 CODEC_TYPE_ATTACHMENT,
9ff77d17 362 CODEC_TYPE_NB
de6d9b64
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363};
364
0e373b95 365/**
0e373b95
MN
366 * all in native-endian format
367 */
a96b68b7 368enum SampleFormat {
9076fee4 369 SAMPLE_FMT_NONE = -1,
1319a77b
AB
370 SAMPLE_FMT_U8, ///< unsigned 8 bits
371 SAMPLE_FMT_S16, ///< signed 16 bits
115329f1 372 SAMPLE_FMT_S32, ///< signed 32 bits
a3a5f4d6 373 SAMPLE_FMT_FLT, ///< float
e06b00f3 374 SAMPLE_FMT_DBL, ///< double
88a07af7 375 SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec
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376};
377
0d72e7d0 378/* Audio channel masks */
9d9b9d32
379#define CH_FRONT_LEFT 0x00000001
380#define CH_FRONT_RIGHT 0x00000002
381#define CH_FRONT_CENTER 0x00000004
382#define CH_LOW_FREQUENCY 0x00000008
383#define CH_BACK_LEFT 0x00000010
384#define CH_BACK_RIGHT 0x00000020
385#define CH_FRONT_LEFT_OF_CENTER 0x00000040
386#define CH_FRONT_RIGHT_OF_CENTER 0x00000080
387#define CH_BACK_CENTER 0x00000100
388#define CH_SIDE_LEFT 0x00000200
389#define CH_SIDE_RIGHT 0x00000400
390#define CH_TOP_CENTER 0x00000800
391#define CH_TOP_FRONT_LEFT 0x00001000
392#define CH_TOP_FRONT_CENTER 0x00002000
393#define CH_TOP_FRONT_RIGHT 0x00004000
394#define CH_TOP_BACK_LEFT 0x00008000
395#define CH_TOP_BACK_CENTER 0x00010000
396#define CH_TOP_BACK_RIGHT 0x00020000
397#define CH_STEREO_LEFT 0x20000000 ///< Stereo downmix.
398#define CH_STEREO_RIGHT 0x40000000 ///< See CH_STEREO_LEFT.
0d72e7d0 399
31557166
JR
400/** Channel mask value used for AVCodecContext.request_channel_layout
401 to indicate that the user requests the channel order of the decoder output
402 to be the native codec channel order. */
403#define CH_LAYOUT_NATIVE 0x8000000000000000LL
404
0d72e7d0 405/* Audio channel convenience macros */
9d9b9d32
406#define CH_LAYOUT_MONO (CH_FRONT_CENTER)
407#define CH_LAYOUT_STEREO (CH_FRONT_LEFT|CH_FRONT_RIGHT)
1b7bc4a2 408#define CH_LAYOUT_2_1 (CH_LAYOUT_STEREO|CH_BACK_CENTER)
9d9b9d32 409#define CH_LAYOUT_SURROUND (CH_LAYOUT_STEREO|CH_FRONT_CENTER)
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JR
410#define CH_LAYOUT_4POINT0 (CH_LAYOUT_SURROUND|CH_BACK_CENTER)
411#define CH_LAYOUT_2_2 (CH_LAYOUT_STEREO|CH_SIDE_LEFT|CH_SIDE_RIGHT)
9d9b9d32
412#define CH_LAYOUT_QUAD (CH_LAYOUT_STEREO|CH_BACK_LEFT|CH_BACK_RIGHT)
413#define CH_LAYOUT_5POINT0 (CH_LAYOUT_SURROUND|CH_SIDE_LEFT|CH_SIDE_RIGHT)
414#define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY)
8613af0a
JR
415#define CH_LAYOUT_5POINT0_BACK (CH_LAYOUT_SURROUND|CH_BACK_LEFT|CH_BACK_RIGHT)
416#define CH_LAYOUT_5POINT1_BACK (CH_LAYOUT_5POINT0_BACK|CH_LOW_FREQUENCY)
5dd3707b 417#define CH_LAYOUT_7POINT0 (CH_LAYOUT_5POINT0|CH_BACK_LEFT|CH_BACK_RIGHT)
9d9b9d32 418#define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT)
8613af0a 419#define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_5POINT1_BACK|\
9d9b9d32
420 CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER)
421#define CH_LAYOUT_STEREO_DOWNMIX (CH_STEREO_LEFT|CH_STEREO_RIGHT)
0d72e7d0 422
de6d9b64 423/* in bytes */
8170e5fb 424#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
de6d9b64 425
d7425f59 426/**
cf713bb8 427 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
171b7b91
AC
428 * This is mainly needed because some optimized bitstream readers read
429 * 32 or 64 bit at once and could read over the end.<br>
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DB
430 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
431 * MPEG bitstreams could cause overread and segfault.
d7425f59 432 */
171b7b91 433#define FF_INPUT_BUFFER_PADDING_SIZE 8
d7425f59 434
0ecca7a4 435/**
f5bccd85
DB
436 * minimum encoding buffer size
437 * Used to avoid some checks during header writing.
0ecca7a4
MN
438 */
439#define FF_MIN_BUFFER_SIZE 16384
440
47146dfb 441
0e373b95 442/**
bafc102b 443 * motion estimation type.
0e373b95 444 */
e4986da9 445enum Motion_Est_ID {
9b4dd1b8 446 ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
e4986da9
J
447 ME_FULL,
448 ME_LOG,
449 ME_PHODS,
9b4dd1b8
MN
450 ME_EPZS, ///< enhanced predictive zonal search
451 ME_X1, ///< reserved for experiments
452 ME_HEX, ///< hexagon based search
453 ME_UMH, ///< uneven multi-hexagon search
454 ME_ITER, ///< iterative search
359bbdab 455 ME_TESA, ///< transformed exhaustive search algorithm
e4986da9
J
456};
457
8c3eba7c 458enum AVDiscard{
f5bccd85
DB
459 /* We leave some space between them for extensions (drop some
460 * keyframes for intra-only or drop just some bidir frames). */
8c3eba7c
MN
461 AVDISCARD_NONE =-16, ///< discard nothing
462 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
463 AVDISCARD_NONREF = 8, ///< discard all non reference
464 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
465 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
466 AVDISCARD_ALL = 48, ///< discard all
467};
468
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469enum AVColorPrimaries{
470 AVCOL_PRI_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
471 AVCOL_PRI_UNSPECIFIED=2,
472 AVCOL_PRI_BT470M =4,
473 AVCOL_PRI_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
474 AVCOL_PRI_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
475 AVCOL_PRI_SMPTE240M =7, ///< functionally identical to above
476 AVCOL_PRI_FILM =8,
477 AVCOL_PRI_NB , ///< Not part of ABI
478};
479
480enum AVColorTransferCharacteristic{
481 AVCOL_TRC_BT709 =1, ///< also ITU-R BT1361
482 AVCOL_TRC_UNSPECIFIED=2,
483 AVCOL_TRC_GAMMA22 =4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
484 AVCOL_TRC_GAMMA28 =5, ///< also ITU-R BT470BG
485 AVCOL_TRC_NB , ///< Not part of ABI
486};
487
488enum AVColorSpace{
489 AVCOL_SPC_RGB =0,
490 AVCOL_SPC_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
491 AVCOL_SPC_UNSPECIFIED=2,
492 AVCOL_SPC_FCC =4,
493 AVCOL_SPC_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
494 AVCOL_SPC_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
495 AVCOL_SPC_SMPTE240M =7,
496 AVCOL_SPC_NB , ///< Not part of ABI
497};
498
499enum AVColorRange{
500 AVCOL_RANGE_UNSPECIFIED=0,
501 AVCOL_RANGE_MPEG =1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
502 AVCOL_RANGE_JPEG =2, ///< the normal 2^n-1 "JPEG" YUV ranges
503 AVCOL_RANGE_NB , ///< Not part of ABI
504};
505
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506/**
507 * X X 3 4 X X are luma samples,
508 * 1 2 1-6 are possible chroma positions
509 * X X 5 6 X 0 is undefined/unknown position
510 */
511enum AVChromaLocation{
512 AVCHROMA_LOC_UNSPECIFIED=0,
513 AVCHROMA_LOC_LEFT =1, ///< mpeg2/4, h264 default
514 AVCHROMA_LOC_CENTER =2, ///< mpeg1, jpeg, h263
515 AVCHROMA_LOC_TOPLEFT =3, ///< DV
516 AVCHROMA_LOC_TOP =4,
517 AVCHROMA_LOC_BOTTOMLEFT =5,
518 AVCHROMA_LOC_BOTTOM =6,
519 AVCHROMA_LOC_NB , ///< Not part of ABI
520};
521
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522typedef struct RcOverride{
523 int start_frame;
524 int end_frame;
f5bccd85 525 int qscale; // If this is 0 then quality_factor will be used instead.
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526 float quality_factor;
527} RcOverride;
528
b0ec9efd 529#define FF_MAX_B_FRAMES 16
9dbcbd92 530
a949d72e 531/* encoding support
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532 These flags can be passed in AVCodecContext.flags before initialization.
533 Note: Not everything is supported yet.
a949d72e 534*/
de6d9b64 535
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536#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale.
537#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263.
538#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC.
539#define CODEC_FLAG_GMC 0x0020 ///< Use GMC.
540#define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>.
541#define CODEC_FLAG_PART 0x0080 ///< Use data partitioning.
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542/**
543 * The parent program guarantees that the input for B-frames containing
f5bccd85 544 * streams is not written to for at least s->max_b_frames+1 frames, if
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545 * this is not set the input will be copied.
546 */
8b4c7dbc 547#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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548#define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode.
549#define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode.
550#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG).
551#define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale.
552#define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges.
553#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding.
554#define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random
555 location instead of only at frame boundaries. */
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556#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization.
557#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
558#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay.
559#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan.
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560#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe.
561#define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT).
21e59552 562/* Fx : Flag for h263+ extra options */
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563#define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
564#define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector
565#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
566#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.
567#define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC
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568#define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
569#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
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570#define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
571#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
f5bccd85 572#define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data.
f3eec1cf 573#define CODEC_FLAG_CLOSED_GOP 0x80000000
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574#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
575#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size.
576#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
577#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
578#define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references.
579#define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames
d3075ed5 580#define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
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581#define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
582#define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
583#define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
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584#define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization
585#define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table.
586#define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
587#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
588#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping
589#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
590#define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
f1618fd9 591#define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible
25a42948 592#define CODEC_FLAG2_MBTREE 0x00040000 ///< Use macroblock tree ratecontrol (x264 only)
6fc5b059 593
21e59552 594/* Unsupported options :
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595 * Syntax Arithmetic coding (SAC)
596 * Reference Picture Selection
eafcac6a 597 * Independent Segment Decoding */
21e59552 598/* /Fx */
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599/* codec capabilities */
600
f5bccd85 601#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
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602/**
603 * Codec uses get_buffer() for allocating buffers.
604 * direct rendering method 1
605 */
606#define CODEC_CAP_DR1 0x0002
f5bccd85 607/* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */
917e06c8 608#define CODEC_CAP_PARSE_ONLY 0x0004
d7425f59 609#define CODEC_CAP_TRUNCATED 0x0008
f5bccd85 610/* Codec can export data for HW decoding (XvMC). */
5e5c247a 611#define CODEC_CAP_HWACCEL 0x0010
115329f1 612/**
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613 * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data.
614 * If this is not set, the codec is guaranteed to never be fed with NULL data.
934982c4 615 */
6f824977 616#define CODEC_CAP_DELAY 0x0020
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617/**
618 * Codec can be fed a final frame with a smaller size.
619 * This can be used to prevent truncation of the last audio samples.
620 */
621#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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622/**
623 * Codec can export data for HW decoding (VDPAU).
624 */
625#define CODEC_CAP_HWACCEL_VDPAU 0x0080
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626/**
627 * Codec can output multiple frames per AVPacket
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628 * Normally demuxers return one frame at a time, demuxers which do not do
629 * are connected to a parser to split what they return into proper frames.
630 * This flag is reserved to the very rare category of codecs which have a
631 * bitstream that cannot be split into frames without timeconsuming
632 * operations like full decoding. Demuxers carring such bitstreams thus
633 * may return multiple frames in a packet. This has many disadvantages like
634 * prohibiting stream copy in many cases thus it should only be considered
635 * as a last resort.
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636 */
637#define CODEC_CAP_SUBFRAMES 0x0100
bf89e6b1 638
f5bccd85 639//The following defines may change, don't expect compatibility if you use them.
8d7ec294 640#define MB_TYPE_INTRA4x4 0x0001
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641#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
642#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific
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643#define MB_TYPE_16x16 0x0008
644#define MB_TYPE_16x8 0x0010
645#define MB_TYPE_8x16 0x0020
646#define MB_TYPE_8x8 0x0040
647#define MB_TYPE_INTERLACED 0x0080
273b0cd3 648#define MB_TYPE_DIRECT2 0x0100 //FIXME
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649#define MB_TYPE_ACPRED 0x0200
650#define MB_TYPE_GMC 0x0400
651#define MB_TYPE_SKIP 0x0800
652#define MB_TYPE_P0L0 0x1000
653#define MB_TYPE_P1L0 0x2000
654#define MB_TYPE_P0L1 0x4000
655#define MB_TYPE_P1L1 0x8000
656#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
657#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
658#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
659#define MB_TYPE_QUANT 0x00010000
660#define MB_TYPE_CBP 0x00020000
661//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
662
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663/**
664 * Pan Scan area.
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665 * This specifies the area which should be displayed.
666 * Note there may be multiple such areas for one frame.
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667 */
668typedef struct AVPanScan{
669 /**
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670 * id
671 * - encoding: Set by user.
672 * - decoding: Set by libavcodec.
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673 */
674 int id;
675
676 /**
677 * width and height in 1/16 pel
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678 * - encoding: Set by user.
679 * - decoding: Set by libavcodec.
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680 */
681 int width;
682 int height;
683
684 /**
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685 * position of the top left corner in 1/16 pel for up to 3 fields/frames
686 * - encoding: Set by user.
687 * - decoding: Set by libavcodec.
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688 */
689 int16_t position[3][2];
690}AVPanScan;
691
492cd3a9 692#define FF_COMMON_FRAME \
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693 /**\
694 * pointer to the picture planes.\
f5bccd85 695 * This might be different from the first allocated byte\
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696 * - encoding: \
697 * - decoding: \
698 */\
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699 uint8_t *data[4];\
700 int linesize[4];\
701 /**\
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702 * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\
703 * This isn't used by libavcodec unless the default get/release_buffer() is used.\
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704 * - encoding: \
705 * - decoding: \
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706 */\
707 uint8_t *base[4];\
708 /**\
709 * 1 -> keyframe, 0-> not\
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710 * - encoding: Set by libavcodec.\
711 * - decoding: Set by libavcodec.\
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712 */\
713 int key_frame;\
714\
715 /**\
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716 * Picture type of the frame, see ?_TYPE below.\
717 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
718 * - decoding: Set by libavcodec.\
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719 */\
720 int pict_type;\
721\
722 /**\
c0df9d75 723 * presentation timestamp in time_base units (time when frame should be shown to user)\
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DB
724 * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\
725 * - encoding: MUST be set by user.\
726 * - decoding: Set by libavcodec.\
1e491e29 727 */\
be6784dc 728 int64_t pts;\
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729\
730 /**\
f5bccd85 731 * picture number in bitstream order\
64863965 732 * - encoding: set by\
f5bccd85 733 * - decoding: Set by libavcodec.\
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734 */\
735 int coded_picture_number;\
736 /**\
f5bccd85 737 * picture number in display order\
64863965 738 * - encoding: set by\
f5bccd85 739 * - decoding: Set by libavcodec.\
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740 */\
741 int display_picture_number;\
742\
743 /**\
158c7f05 744 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
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DB
745 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\
746 * - decoding: Set by libavcodec.\
1e491e29 747 */\
158c7f05 748 int quality; \
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749\
750 /**\
751 * buffer age (1->was last buffer and dint change, 2->..., ...).\
f5bccd85 752 * Set to INT_MAX if the buffer has not been used yet.\
64863965 753 * - encoding: unused\
f5bccd85 754 * - decoding: MUST be set by get_buffer().\
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755 */\
756 int age;\
757\
758 /**\
759 * is this picture used as reference\
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760 * The values for this are the same as the MpegEncContext.picture_structure\
761 * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\
5fe2a515 762 * Set to 4 for delayed, non-reference frames.\
64863965 763 * - encoding: unused\
f5bccd85 764 * - decoding: Set by libavcodec. (before get_buffer() call)).\
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765 */\
766 int reference;\
767\
768 /**\
769 * QP table\
64863965 770 * - encoding: unused\
f5bccd85 771 * - decoding: Set by libavcodec.\
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772 */\
773 int8_t *qscale_table;\
774 /**\
775 * QP store stride\
64863965 776 * - encoding: unused\
f5bccd85 777 * - decoding: Set by libavcodec.\
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778 */\
779 int qstride;\
780\
781 /**\
f5bccd85 782 * mbskip_table[mb]>=1 if MB didn't change\
1e491e29 783 * stride= mb_width = (width+15)>>4\
64863965 784 * - encoding: unused\
f5bccd85 785 * - decoding: Set by libavcodec.\
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786 */\
787 uint8_t *mbskip_table;\
788\
789 /**\
f5bccd85 790 * motion vector table\
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791 * @code\
792 * example:\
793 * int mv_sample_log2= 4 - motion_subsample_log2;\
794 * int mb_width= (width+15)>>4;\
795 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
796 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
797 * @endcode\
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798 * - encoding: Set by user.\
799 * - decoding: Set by libavcodec.\
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800 */\
801 int16_t (*motion_val[2])[2];\
802\
803 /**\
f5bccd85 804 * macroblock type table\
8d7ec294 805 * mb_type_base + mb_width + 2\
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806 * - encoding: Set by user.\
807 * - decoding: Set by libavcodec.\
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808 */\
809 uint32_t *mb_type;\
810\
811 /**\
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812 * log2 of the size of the block which a single vector in motion_val represents: \
813 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
8d7ec294 814 * - encoding: unused\
f5bccd85 815 * - decoding: Set by libavcodec.\
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816 */\
817 uint8_t motion_subsample_log2;\
818\
819 /**\
1e491e29 820 * for some private data of the user\
64863965 821 * - encoding: unused\
f5bccd85 822 * - decoding: Set by user.\
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823 */\
824 void *opaque;\
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825\
826 /**\
827 * error\
f5bccd85 828 * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\
64863965 829 * - decoding: unused\
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MN
830 */\
831 uint64_t error[4];\
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832\
833 /**\
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DB
834 * type of the buffer (to keep track of who has to deallocate data[*])\
835 * - encoding: Set by the one who allocates it.\
836 * - decoding: Set by the one who allocates it.\
837 * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\
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838 */\
839 int type;\
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840 \
841 /**\
f5bccd85 842 * When decoding, this signals how much the picture must be delayed.\
2ec23b6d 843 * extra_delay = repeat_pict / (2*fps)\
64863965 844 * - encoding: unused\
f5bccd85 845 * - decoding: Set by libavcodec.\
2ec23b6d 846 */\
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847 int repeat_pict;\
848 \
849 /**\
850 * \
851 */\
852 int qscale_type;\
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853 \
854 /**\
855 * The content of the picture is interlaced.\
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856 * - encoding: Set by user.\
857 * - decoding: Set by libavcodec. (default 0)\
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858 */\
859 int interlaced_frame;\
860 \
861 /**\
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862 * If the content is interlaced, is top field displayed first.\
863 * - encoding: Set by user.\
864 * - decoding: Set by libavcodec.\
2744ca9a 865 */\
9dad924e 866 int top_field_first;\
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867 \
868 /**\
869 * Pan scan.\
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870 * - encoding: Set by user.\
871 * - decoding: Set by libavcodec.\
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872 */\
873 AVPanScan *pan_scan;\
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874 \
875 /**\
f5bccd85 876 * Tell user application that palette has changed from previous frame.\
2a2bbcb0 877 * - encoding: ??? (no palette-enabled encoder yet)\
f5bccd85 878 * - decoding: Set by libavcodec. (default 0).\
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879 */\
880 int palette_has_changed;\
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RT
881 \
882 /**\
f5bccd85 883 * codec suggestion on buffer type if != 0\
074c4ca7 884 * - encoding: unused\
f5bccd85 885 * - decoding: Set by libavcodec. (before get_buffer() call)).\
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RT
886 */\
887 int buffer_hints;\
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888\
889 /**\
f5bccd85 890 * DCT coefficients\
8289c6fa 891 * - encoding: unused\
f5bccd85 892 * - decoding: Set by libavcodec.\
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893 */\
894 short *dct_coeff;\
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895\
896 /**\
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897 * motion reference frame index\
898 * the order in which these are stored can depend on the codec.\
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899 * - encoding: Set by user.\
900 * - decoding: Set by libavcodec.\
a4d36c11 901 */\
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902 int8_t *ref_index[2];\
903\
904 /**\
905 * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque\
906 * output in AVFrame.reordered_opaque\
907 * - encoding: unused\
908 * - decoding: Read by user.\
909 */\
910 int64_t reordered_opaque;\
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911\
912 /**\
913 * hardware accelerator private data (FFmpeg allocated)\
914 * - encoding: unused\
915 * - decoding: Set by libavcodec\
916 */\
952e2083 917 void *hwaccel_picture_private;\
79de84f2 918
2ec23b6d 919
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920#define FF_QSCALE_TYPE_MPEG1 0
921#define FF_QSCALE_TYPE_MPEG2 1
922#define FF_QSCALE_TYPE_H264 2
800274f8 923#define FF_QSCALE_TYPE_VP56 3
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924
925#define FF_BUFFER_TYPE_INTERNAL 1
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DB
926#define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user)
927#define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
928#define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
4e00e76b 929
1e491e29 930
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AJ
931#define FF_I_TYPE 1 ///< Intra
932#define FF_P_TYPE 2 ///< Predicted
933#define FF_B_TYPE 3 ///< Bi-dir predicted
934#define FF_S_TYPE 4 ///< S(GMC)-VOP MPEG4
935#define FF_SI_TYPE 5 ///< Switching Intra
936#define FF_SP_TYPE 6 ///< Switching Predicted
48d533e6 937#define FF_BI_TYPE 7
1e491e29 938
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939#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore).
940#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
941#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
942#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
074c4ca7 943
18c915ee
TB
944typedef struct AVPacket {
945 /**
7b356d39
RS
946 * Presentation timestamp in AVStream->time_base units; the time at which
947 * the decompressed packet will be presented to the user.
18c915ee
TB
948 * Can be AV_NOPTS_VALUE if it is not stored in the file.
949 * pts MUST be larger or equal to dts as presentation cannot happen before
950 * decompression, unless one wants to view hex dumps. Some formats misuse
951 * the terms dts and pts/cts to mean something different. Such timestamps
952 * must be converted to true pts/dts before they are stored in AVPacket.
953 */
954 int64_t pts;
955 /**
7b356d39
RS
956 * Decompression timestamp in AVStream->time_base units; the time at which
957 * the packet is decompressed.
18c915ee
TB
958 * Can be AV_NOPTS_VALUE if it is not stored in the file.
959 */
960 int64_t dts;
961 uint8_t *data;
962 int size;
963 int stream_index;
964 int flags;
965 /**
7b356d39 966 * Duration of this packet in AVStream->time_base units, 0 if unknown.
18c915ee
TB
967 * Equals next_pts - this_pts in presentation order.
968 */
969 int duration;
970 void (*destruct)(struct AVPacket *);
971 void *priv;
972 int64_t pos; ///< byte position in stream, -1 if unknown
973
974 /**
7b356d39 975 * Time difference in AVStream->time_base units from the pts of this
18c915ee
TB
976 * packet to the point at which the output from the decoder has converged
977 * independent from the availability of previous frames. That is, the
978 * frames are virtually identical no matter if decoding started from
979 * the very first frame or from this keyframe.
980 * Is AV_NOPTS_VALUE if unknown.
981 * This field is not the display duration of the current packet.
982 *
983 * The purpose of this field is to allow seeking in streams that have no
984 * keyframes in the conventional sense. It corresponds to the
985 * recovery point SEI in H.264 and match_time_delta in NUT. It is also
986 * essential for some types of subtitle streams to ensure that all
987 * subtitles are correctly displayed after seeking.
988 */
989 int64_t convergence_duration;
990} AVPacket;
8f3f2e06
RD
991#define AV_PKT_FLAG_KEY 0x0001
992#if LIBAVCODEC_VERSION_MAJOR < 53
993#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
994#endif
18c915ee 995
0da71265
MN
996/**
997 * Audio Video Frame.
ba66ae94
MN
998 * New fields can be added to the end of FF_COMMON_FRAME with minor version
999 * bumps.
8bfb108b 1000 * Removal, reordering and changes to existing fields require a major
ba66ae94
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1001 * version bump. No fields should be added into AVFrame before or after
1002 * FF_COMMON_FRAME!
8bfb108b 1003 * sizeof(AVFrame) must not be used outside libav*.
0da71265 1004 */
492cd3a9
MN
1005typedef struct AVFrame {
1006 FF_COMMON_FRAME
1007} AVFrame;
1e491e29 1008
d33c949c 1009/**
252f17e2
MN
1010 * main external API structure.
1011 * New fields can be added to the end with minor version bumps.
8bfb108b 1012 * Removal, reordering and changes to existing fields require a major
252f17e2 1013 * version bump.
8bfb108b 1014 * sizeof(AVCodecContext) must not be used outside libav*.
d33c949c 1015 */
de6d9b64 1016typedef struct AVCodecContext {
b71901e6 1017 /**
f5bccd85 1018 * information on struct for av_log
bc874dae
MB
1019 * - set by avcodec_alloc_context
1020 */
d42a814e 1021 const AVClass *av_class;
bc874dae 1022 /**
f5bccd85
DB
1023 * the average bitrate
1024 * - encoding: Set by user; unused for constant quantizer encoding.
1025 * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
b71901e6 1026 */
de6d9b64 1027 int bit_rate;
b71901e6
MN
1028
1029 /**
64863965 1030 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 1031 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
f5bccd85 1032 * - encoding: Set by user; unused for constant quantizer encoding.
64863965 1033 * - decoding: unused
b71901e6 1034 */
115329f1 1035 int bit_rate_tolerance;
b71901e6
MN
1036
1037 /**
64863965 1038 * CODEC_FLAG_*.
f5bccd85
DB
1039 * - encoding: Set by user.
1040 * - decoding: Set by user.
b71901e6 1041 */
de6d9b64 1042 int flags;
b71901e6
MN
1043
1044 /**
f5bccd85
DB
1045 * Some codecs need additional format info. It is stored here.
1046 * If any muxer uses this then ALL demuxers/parsers AND encoders for the
1047 * specific codec MUST set it correctly otherwise stream copy breaks.
1048 * In general use of this field by muxers is not recommanded.
1049 * - encoding: Set by libavcodec.
1050 * - decoding: Set by libavcodec. (FIXME: Is this OK?)
b71901e6
MN
1051 */
1052 int sub_id;
1053
1054 /**
f5bccd85 1055 * Motion estimation algorithm used for video coding.
58f7833e 1056 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
89223ef6 1057 * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
64863965
MN
1058 * - encoding: MUST be set by user.
1059 * - decoding: unused
b71901e6
MN
1060 */
1061 int me_method;
1062
1063 /**
f5bccd85
DB
1064 * some codecs need / can use extradata like Huffman tables.
1065 * mjpeg: Huffman tables
b71901e6 1066 * rv10: additional flags
b704e742 1067 * mpeg4: global headers (they can be in the bitstream or here)
f5bccd85
DB
1068 * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
1069 * than extradata_size to avoid prolems if it is read with the bitstream reader.
1070 * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
1071 * - encoding: Set/allocated/freed by libavcodec.
1072 * - decoding: Set/allocated/freed by user.
b71901e6 1073 */
58f2a4b0 1074 uint8_t *extradata;
e84c31dc 1075 int extradata_size;
115329f1 1076
b71901e6 1077 /**
f5bccd85
DB
1078 * This is the fundamental unit of time (in seconds) in terms
1079 * of which frame timestamps are represented. For fixed-fps content,
5b28c8c3
MN
1080 * timebase should be 1/framerate and timestamp increments should be
1081 * identically 1.
f5bccd85
DB
1082 * - encoding: MUST be set by user.
1083 * - decoding: Set by libavcodec.
b71901e6 1084 */
c0df9d75 1085 AVRational time_base;
115329f1 1086
5b28c8c3 1087 /* video only */
14bea432 1088 /**
21adafec 1089 * picture width / height.
115329f1 1090 * - encoding: MUST be set by user.
f5bccd85
DB
1091 * - decoding: Set by libavcodec.
1092 * Note: For compatibility it is possible to set this instead of
1093 * coded_width/height before decoding.
b71901e6 1094 */
de6d9b64 1095 int width, height;
115329f1 1096
e769f053 1097#define FF_ASPECT_EXTENDED 15
b71901e6
MN
1098
1099 /**
f5bccd85
DB
1100 * the number of pictures in a group of pictures, or 0 for intra_only
1101 * - encoding: Set by user.
64863965 1102 * - decoding: unused
b71901e6
MN
1103 */
1104 int gop_size;
1105
1106 /**
f5bccd85
DB
1107 * Pixel format, see PIX_FMT_xxx.
1108 * - encoding: Set by user.
1109 * - decoding: Set by libavcodec.
b71901e6 1110 */
e4eadb4b 1111 enum PixelFormat pix_fmt;
115329f1 1112
bdfcbbed 1113 /**
f5bccd85 1114 * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
bdfcbbed 1115 * has to read frames at native frame rate.
f5bccd85
DB
1116 * - encoding: Set by user.
1117 * - decoding: unused
bdfcbbed
MK
1118 */
1119 int rate_emu;
115329f1 1120
b71901e6 1121 /**
f5bccd85
DB
1122 * If non NULL, 'draw_horiz_band' is called by the libavcodec
1123 * decoder to draw a horizontal band. It improves cache usage. Not
b71901e6 1124 * all codecs can do that. You must check the codec capabilities
f5bccd85 1125 * beforehand.
24b1583a
IK
1126 * The function is also used by hardware acceleration APIs.
1127 * It is called at least once during frame decoding to pass
1128 * the data needed for hardware render.
1129 * In that mode instead of pixel data, AVFrame points to
1130 * a structure specific to the acceleration API. The application
1131 * reads the structure and can change some fields to indicate progress
1132 * or mark state.
64863965 1133 * - encoding: unused
f5bccd85 1134 * - decoding: Set by user.
3bb07d61
MN
1135 * @param height the height of the slice
1136 * @param y the y position of the slice
1137 * @param type 1->top field, 2->bottom field, 3->frame
1138 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 1139 */
bf89e6b1 1140 void (*draw_horiz_band)(struct AVCodecContext *s,
da64ecc3 1141 const AVFrame *src, int offset[4],
3bb07d61 1142 int y, int type, int height);
bf89e6b1 1143
de6d9b64 1144 /* audio only */
f5bccd85 1145 int sample_rate; ///< samples per second
5fcc4a23 1146 int channels; ///< number of audio channels
a3a5f4d6
MN
1147
1148 /**
f5bccd85
DB
1149 * audio sample format
1150 * - encoding: Set by user.
1151 * - decoding: Set by libavcodec.
a3a5f4d6 1152 */
ce9dd8f5 1153 enum SampleFormat sample_fmt; ///< sample format
de6d9b64 1154
f5bccd85 1155 /* The following data should not be initialized. */
718b27a7 1156 /**
f5bccd85 1157 * Samples per packet, initialized when calling 'init'.
718b27a7
MN
1158 */
1159 int frame_size;
115329f1 1160 int frame_number; ///< audio or video frame number
c0601d70 1161#if LIBAVCODEC_VERSION_MAJOR < 53
f5bccd85 1162 int real_pict_num; ///< Returns the real picture number of previous encoded frame.
c0601d70 1163#endif
115329f1 1164
b71901e6 1165 /**
f5bccd85 1166 * Number of frames the decoded output will be delayed relative to
64863965 1167 * the encoded input.
f5bccd85 1168 * - encoding: Set by libavcodec.
64863965 1169 * - decoding: unused
b71901e6
MN
1170 */
1171 int delay;
115329f1 1172
64863965
MN
1173 /* - encoding parameters */
1174 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
115329f1
DB
1175 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
1176
b71901e6 1177 /**
f5bccd85
DB
1178 * minimum quantizer
1179 * - encoding: Set by user.
64863965 1180 * - decoding: unused
b71901e6
MN
1181 */
1182 int qmin;
1183
1184 /**
f5bccd85
DB
1185 * maximum quantizer
1186 * - encoding: Set by user.
64863965 1187 * - decoding: unused
b71901e6
MN
1188 */
1189 int qmax;
1190
1191 /**
f5bccd85
DB
1192 * maximum quantizer difference between frames
1193 * - encoding: Set by user.
64863965 1194 * - decoding: unused
b71901e6
MN
1195 */
1196 int max_qdiff;
1197
1198 /**
f5bccd85
DB
1199 * maximum number of B-frames between non-B-frames
1200 * Note: The output will be delayed by max_b_frames+1 relative to the input.
1201 * - encoding: Set by user.
64863965 1202 * - decoding: unused
b71901e6
MN
1203 */
1204 int max_b_frames;
1205
1206 /**
f5bccd85 1207 * qscale factor between IP and B-frames
662e5411 1208 * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1209 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
f5bccd85 1210 * - encoding: Set by user.
64863965 1211 * - decoding: unused
b71901e6
MN
1212 */
1213 float b_quant_factor;
115329f1 1214
b71901e6
MN
1215 /** obsolete FIXME remove */
1216 int rc_strategy;
64b7c5b6
MN
1217#define FF_RC_STRATEGY_XVID 1
1218
8b4c7dbc 1219 int b_frame_strategy;
9dbcbd92 1220
b71901e6 1221 /**
85947156
VS
1222 * hurry up amount
1223 * - encoding: unused
1224 * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
f9ec0aa1 1225 * @deprecated Deprecated in favor of skip_idct and skip_frame.
b71901e6
MN
1226 */
1227 int hurry_up;
115329f1 1228
de6d9b64 1229 struct AVCodec *codec;
115329f1 1230
de6d9b64
FB
1231 void *priv_data;
1232
bb628dae 1233 int rtp_payload_size; /* The size of the RTP payload: the coder will */
f5bccd85 1234 /* do its best to deliver a chunk with size */
644d98a4 1235 /* below rtp_payload_size, the chunk will start */
f5bccd85 1236 /* with a start code on some codecs like H.263. */
644d98a4 1237 /* This doesn't take account of any particular */
f5bccd85 1238 /* headers inside the transmitted RTP payload. */
81401c1f 1239
115329f1 1240
f5bccd85
DB
1241 /* The RTP callback: This function is called */
1242 /* every time the encoder has a packet to send. */
1243 /* It depends on the encoder if the data starts */
1244 /* with a Start Code (it should). H.263 does. */
1245 /* mb_nb contains the number of macroblocks */
1246 /* encoded in the RTP payload. */
115329f1 1247 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
81401c1f 1248
098eefe1
MN
1249 /* statistics, used for 2-pass encoding */
1250 int mv_bits;
1251 int header_bits;
1252 int i_tex_bits;
1253 int p_tex_bits;
1254 int i_count;
1255 int p_count;
1256 int skip_count;
b71901e6 1257 int misc_bits;
115329f1 1258
b71901e6 1259 /**
f5bccd85
DB
1260 * number of bits used for the previously encoded frame
1261 * - encoding: Set by libavcodec.
7004ffb3 1262 * - decoding: unused
b71901e6 1263 */
098eefe1 1264 int frame_bits;
7004ffb3 1265
b71901e6 1266 /**
f5bccd85
DB
1267 * Private data of the user, can be used to carry app specific stuff.
1268 * - encoding: Set by user.
1269 * - decoding: Set by user.
b71901e6
MN
1270 */
1271 void *opaque;
1272
de6d9b64 1273 char codec_name[32];
4a663d80
PG
1274 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
1275 enum CodecID codec_id; /* see CODEC_ID_xxx */
115329f1 1276
7004ffb3
MN
1277 /**
1278 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
f5bccd85
DB
1279 * This is used to work around some encoder bugs.
1280 * A demuxer should set this to what is stored in the field used to identify the codec.
1281 * If there are multiple such fields in a container then the demuxer should choose the one
1282 * which maximizes the information about the used codec.
1283 * If the codec tag field in a container is larger then 32 bits then the demuxer should
1284 * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
47bbf8a7 1285 * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
f5bccd85
DB
1286 * first.
1287 * - encoding: Set by user, if not then the default based on codec_id will be used.
1288 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
7004ffb3
MN
1289 */
1290 unsigned int codec_tag;
115329f1 1291
b71901e6 1292 /**
f5bccd85
DB
1293 * Work around bugs in encoders which sometimes cannot be detected automatically.
1294 * - encoding: Set by user
1295 * - decoding: Set by user
b71901e6
MN
1296 */
1297 int workaround_bugs;
64863965 1298#define FF_BUG_AUTODETECT 1 ///< autodetection
4d2858de
MN
1299#define FF_BUG_OLD_MSMPEG4 2
1300#define FF_BUG_XVID_ILACE 4
1301#define FF_BUG_UMP4 8
1302#define FF_BUG_NO_PADDING 16
3116cb14 1303#define FF_BUG_AMV 32
f5bccd85 1304#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default.
03e93d35 1305#define FF_BUG_QPEL_CHROMA 64
db794953 1306#define FF_BUG_STD_QPEL 128
36df8805 1307#define FF_BUG_QPEL_CHROMA2 256
c40c3482 1308#define FF_BUG_DIRECT_BLOCKSIZE 512
1c6dcb0f 1309#define FF_BUG_EDGE 1024
b44bdf7e 1310#define FF_BUG_HPEL_CHROMA 2048
4ccde216 1311#define FF_BUG_DC_CLIP 4096
f5bccd85 1312#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders.
3566042a 1313#define FF_BUG_TRUNCATED 16384
f5bccd85 1314//#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
115329f1 1315
b71901e6 1316 /**
f5bccd85
DB
1317 * luma single coefficient elimination threshold
1318 * - encoding: Set by user.
64863965 1319 * - decoding: unused
b71901e6 1320 */
1f6b6e50 1321 int luma_elim_threshold;
115329f1 1322
b71901e6 1323 /**
f5bccd85
DB
1324 * chroma single coeff elimination threshold
1325 * - encoding: Set by user.
64863965 1326 * - decoding: unused
b71901e6 1327 */
1f6b6e50 1328 int chroma_elim_threshold;
115329f1 1329
b71901e6 1330 /**
f5bccd85
DB
1331 * strictly follow the standard (MPEG4, ...).
1332 * - encoding: Set by user.
5771b2c3
MN
1333 * - decoding: Set by user.
1334 * Setting this to STRICT or higher means the encoder and decoder will
1335 * generally do stupid things. While setting it to inofficial or lower
1336 * will mean the encoder might use things that are not supported by all
1337 * spec compliant decoders. Decoders make no difference between normal,
1338 * inofficial and experimental, that is they always try to decode things
1339 * when they can unless they are explicitly asked to behave stupid
1340 * (=strictly conform to the specs)
b71901e6
MN
1341 */
1342 int strict_std_compliance;
f5bccd85
DB
1343#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to a older more strict version of the spec or reference software.
1344#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences.
9cd81798 1345#define FF_COMPLIANCE_NORMAL 0
f5bccd85
DB
1346#define FF_COMPLIANCE_INOFFICIAL -1 ///< Allow inofficial extensions.
1347#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
9cd81798 1348
b71901e6 1349 /**
f5bccd85 1350 * qscale offset between IP and B-frames
f5bccd85 1351 * - encoding: Set by user.
64863965 1352 * - decoding: unused
b71901e6
MN
1353 */
1354 float b_quant_offset;
115329f1 1355
b71901e6 1356 /**
047599a4 1357 * Error recognization; higher values will detect more errors but may
f5bccd85 1358 * misdetect some more or less valid parts as errors.
64863965 1359 * - encoding: unused
f5bccd85 1360 * - decoding: Set by user.
b71901e6 1361 */
047599a4 1362 int error_recognition;
1471c6c2 1363#define FF_ER_CAREFUL 1
ce3bcaed
MN
1364#define FF_ER_COMPLIANT 2
1365#define FF_ER_AGGRESSIVE 3
1366#define FF_ER_VERY_AGGRESSIVE 4
115329f1 1367
6b72ac63 1368 /**
f5bccd85
DB
1369 * Called at the beginning of each frame to get a buffer for it.
1370 * If pic.reference is set then the frame will be read later by libavcodec.
eb285cfe 1371 * avcodec_align_dimensions2() should be used to find the required width and
f5bccd85 1372 * height, as they normally need to be rounded up to the next multiple of 16.
f1b99cc6
MN
1373 * if CODEC_CAP_DR1 is not set then get_buffer() must call
1374 * avcodec_default_get_buffer() instead of providing buffers allocated by
1375 * some other means.
64863965 1376 * - encoding: unused
f5bccd85 1377 * - decoding: Set by libavcodec., user can override.
b71901e6 1378 */
492cd3a9 1379 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
115329f1 1380
b71901e6 1381 /**
69b192ac 1382 * Called to release buffers which were allocated with get_buffer.
f5bccd85
DB
1383 * A released buffer can be reused in get_buffer().
1384 * pic.data[*] must be set to NULL.
64863965 1385 * - encoding: unused
f5bccd85 1386 * - decoding: Set by libavcodec., user can override.
b71901e6 1387 */
492cd3a9 1388 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
0fd90455 1389
b71901e6 1390 /**
eb8a25c8 1391 * Size of the frame reordering buffer in the decoder.
2d7b0560 1392 * For MPEG-2 it is 1 IPB or 0 low delay IP.
f5bccd85
DB
1393 * - encoding: Set by libavcodec.
1394 * - decoding: Set by libavcodec.
b71901e6
MN
1395 */
1396 int has_b_frames;
718b27a7
MN
1397
1398 /**
1399 * number of bytes per packet if constant and known or 0
f5bccd85 1400 * Used by some WAV based audio codecs.
718b27a7
MN
1401 */
1402 int block_align;
115329f1 1403
f5bccd85 1404 int parse_only; /* - decoding only: If true, only parsing is done
917e06c8
FB
1405 (function avcodec_parse_frame()). The frame
1406 data is returned. Only MPEG codecs support this now. */
115329f1 1407
b71901e6 1408 /**
f5bccd85
DB
1409 * 0-> h263 quant 1-> mpeg quant
1410 * - encoding: Set by user.
64863965 1411 * - decoding: unused
b71901e6
MN
1412 */
1413 int mpeg_quant;
115329f1 1414
b71901e6 1415 /**
f5bccd85
DB
1416 * pass1 encoding statistics output buffer
1417 * - encoding: Set by libavcodec.
64863965 1418 * - decoding: unused
b71901e6 1419 */
64863965 1420 char *stats_out;
115329f1 1421
b71901e6 1422 /**
f5bccd85
DB
1423 * pass2 encoding statistics input buffer
1424 * Concatenated stuff from stats_out of pass1 should be placed here.
1425 * - encoding: Allocated/set/freed by user.
64863965 1426 * - decoding: unused
b71901e6
MN
1427 */
1428 char *stats_in;
115329f1 1429
b71901e6 1430 /**
f5bccd85
DB
1431 * ratecontrol qmin qmax limiting method
1432 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
1433 * - encoding: Set by user.
64863965 1434 * - decoding: unused
b71901e6 1435 */
ce980a95 1436 float rc_qsquish;
b71901e6 1437
ce980a95
MN
1438 float rc_qmod_amp;
1439 int rc_qmod_freq;
115329f1 1440
b71901e6 1441 /**
f5bccd85
DB
1442 * ratecontrol override, see RcOverride
1443 * - encoding: Allocated/set/freed by user.
64863965 1444 * - decoding: unused
b71901e6 1445 */
ce980a95
MN
1446 RcOverride *rc_override;
1447 int rc_override_count;
115329f1 1448
b71901e6 1449 /**
f5bccd85
DB
1450 * rate control equation
1451 * - encoding: Set by user
64863965 1452 * - decoding: unused
b71901e6 1453 */
6881b8e5 1454 const char *rc_eq;
115329f1 1455
b71901e6 1456 /**
f5bccd85
DB
1457 * maximum bitrate
1458 * - encoding: Set by user.
64863965 1459 * - decoding: unused
b71901e6 1460 */
ce980a95 1461 int rc_max_rate;
115329f1 1462
b71901e6 1463 /**
f5bccd85
DB
1464 * minimum bitrate
1465 * - encoding: Set by user.
64863965 1466 * - decoding: unused
b71901e6 1467 */
ce980a95 1468 int rc_min_rate;
115329f1 1469
b71901e6 1470 /**
f5bccd85
DB
1471 * decoder bitstream buffer size
1472 * - encoding: Set by user.
64863965 1473 * - decoding: unused
b71901e6 1474 */
ce980a95
MN
1475 int rc_buffer_size;
1476 float rc_buffer_aggressivity;
b71901e6
MN
1477
1478 /**
f5bccd85
DB
1479 * qscale factor between P and I-frames
1480 * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
1481 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1482 * - encoding: Set by user.
64863965 1483 * - decoding: unused
b71901e6
MN
1484 */
1485 float i_quant_factor;
115329f1 1486
b71901e6 1487 /**
f5bccd85
DB
1488 * qscale offset between P and I-frames
1489 * - encoding: Set by user.
64863965 1490 * - decoding: unused
b71901e6
MN
1491 */
1492 float i_quant_offset;
115329f1 1493
b71901e6 1494 /**
f5bccd85
DB
1495 * initial complexity for pass1 ratecontrol
1496 * - encoding: Set by user.
64863965 1497 * - decoding: unused
b71901e6 1498 */
ce980a95 1499 float rc_initial_cplx;
917e06c8 1500
b71901e6 1501 /**
f5bccd85
DB
1502 * DCT algorithm, see FF_DCT_* below
1503 * - encoding: Set by user.
64863965 1504 * - decoding: unused
b71901e6 1505 */
28db7fce 1506 int dct_algo;
c7e07931 1507#define FF_DCT_AUTO 0
28db7fce 1508#define FF_DCT_FASTINT 1
c7e07931
MO
1509#define FF_DCT_INT 2
1510#define FF_DCT_MMX 3
1511#define FF_DCT_MLIB 4
05c4072b 1512#define FF_DCT_ALTIVEC 5
65e4c8c9 1513#define FF_DCT_FAAN 6
115329f1 1514
c5d309f2 1515 /**
f5bccd85
DB
1516 * luminance masking (0-> disabled)
1517 * - encoding: Set by user.
64863965 1518 * - decoding: unused
c5d309f2
MN
1519 */
1520 float lumi_masking;
115329f1 1521
c5d309f2 1522 /**
f5bccd85
DB
1523 * temporary complexity masking (0-> disabled)
1524 * - encoding: Set by user.
64863965 1525 * - decoding: unused
c5d309f2
MN
1526 */
1527 float temporal_cplx_masking;
115329f1 1528
c5d309f2 1529 /**
f5bccd85
DB
1530 * spatial complexity masking (0-> disabled)
1531 * - encoding: Set by user.
64863965 1532 * - decoding: unused
c5d309f2
MN
1533 */
1534 float spatial_cplx_masking;
115329f1 1535
c5d309f2 1536 /**
f5bccd85
DB
1537 * p block masking (0-> disabled)
1538 * - encoding: Set by user.
64863965 1539 * - decoding: unused
c5d309f2
MN
1540 */
1541 float p_masking;
15415af4 1542
5e746b99 1543 /**
f5bccd85
DB
1544 * darkness masking (0-> disabled)
1545 * - encoding: Set by user.
64863965 1546 * - decoding: unused
5e746b99
MN
1547 */
1548 float dark_masking;
115329f1 1549
0c2dd16e 1550 /**
f5bccd85
DB
1551 * IDCT algorithm, see FF_IDCT_* below.
1552 * - encoding: Set by user.
1553 * - decoding: Set by user.
2ad1516a
MN
1554 */
1555 int idct_algo;
273b0cd3
DB
1556#define FF_IDCT_AUTO 0
1557#define FF_IDCT_INT 1
1558#define FF_IDCT_SIMPLE 2
1559#define FF_IDCT_SIMPLEMMX 3
1560#define FF_IDCT_LIBMPEG2MMX 4
1561#define FF_IDCT_PS2 5
1562#define FF_IDCT_MLIB 6
1563#define FF_IDCT_ARM 7
1564#define FF_IDCT_ALTIVEC 8
1565#define FF_IDCT_SH4 9
1566#define FF_IDCT_SIMPLEARM 10
1567#define FF_IDCT_H264 11
1568#define FF_IDCT_VP3 12
1569#define FF_IDCT_IPP 13
1570#define FF_IDCT_XVIDMMX 14
1571#define FF_IDCT_CAVS 15
a0403006 1572#define FF_IDCT_SIMPLEARMV5TE 16
273b0cd3 1573#define FF_IDCT_SIMPLEARMV6 17
d9420d4d 1574#define FF_IDCT_SIMPLEVIS 18
9abc7e0f 1575#define FF_IDCT_WMV2 19
6f08c541 1576#define FF_IDCT_FAAN 20
42b30357 1577#define FF_IDCT_EA 21
7eec4328 1578#define FF_IDCT_SIMPLENEON 22
74c47463 1579#define FF_IDCT_SIMPLEALPHA 23
342c7dfd 1580#define FF_IDCT_BINK 24
2ad1516a 1581
144f0625 1582 /**
f5bccd85
DB
1583 * slice count
1584 * - encoding: Set by libavcodec.
1585 * - decoding: Set by user (or 0).
144f0625
MN
1586 */
1587 int slice_count;
1588 /**
f5bccd85
DB
1589 * slice offsets in the frame in bytes
1590 * - encoding: Set/allocated by libavcodec.
1591 * - decoding: Set/allocated by user (or NULL).
144f0625
MN
1592 */
1593 int *slice_offset;
1594
4d2858de 1595 /**
f5bccd85 1596 * error concealment flags
64863965 1597 * - encoding: unused
f5bccd85 1598 * - decoding: Set by user.
4d2858de
MN
1599 */
1600 int error_concealment;
1601#define FF_EC_GUESS_MVS 1
1602#define FF_EC_DEBLOCK 2
1603
6b72ac63 1604 /**
bec89a84 1605 * dsp_mask could be add used to disable unwanted CPU features
8350df97 1606 * CPU features (i.e. MMX, SSE. ...)
bec89a84 1607 *
f5bccd85
DB
1608 * With the FORCE flag you may instead enable given CPU features.
1609 * (Dangerous: Usable in case of misdetection, improper usage however will
1610 * result into program crash.)
bec89a84
ZK
1611 */
1612 unsigned dsp_mask;
f5bccd85 1613#define FF_MM_FORCE 0x80000000 /* Force usage of selected flags (OR) */
bec89a84 1614 /* lower 16 bits - CPU features */
0cd60abf
MN
1615#define FF_MM_MMX 0x0001 ///< standard MMX
1616#define FF_MM_3DNOW 0x0004 ///< AMD 3DNOW
6b434361 1617#if LIBAVCODEC_VERSION_MAJOR < 53
0cd60abf 1618#define FF_MM_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext
6b434361
SS
1619#endif
1620#define FF_MM_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext
0cd60abf
MN
1621#define FF_MM_SSE 0x0008 ///< SSE functions
1622#define FF_MM_SSE2 0x0010 ///< PIV SSE2 functions
1623#define FF_MM_3DNOWEXT 0x0020 ///< AMD 3DNowExt
1624#define FF_MM_SSE3 0x0040 ///< Prescott SSE3 functions
1625#define FF_MM_SSSE3 0x0080 ///< Conroe SSSE3 functions
710441c2
DC
1626#define FF_MM_SSE4 0x0100 ///< Penryn SSE4.1 functions
1627#define FF_MM_SSE42 0x0200 ///< Nehalem SSE4.2 functions
0cd60abf 1628#define FF_MM_IWMMXT 0x0100 ///< XScale IWMMXT
82d1605f 1629#define FF_MM_ALTIVEC 0x0001 ///< standard AltiVec
11f18faf
MN
1630
1631 /**
64863965 1632 * bits per sample/pixel from the demuxer (needed for huffyuv).
f5bccd85
DB
1633 * - encoding: Set by libavcodec.
1634 * - decoding: Set by user.
11f18faf 1635 */
46a73068 1636 int bits_per_coded_sample;
115329f1 1637
11f18faf 1638 /**
f5bccd85
DB
1639 * prediction method (needed for huffyuv)
1640 * - encoding: Set by user.
64863965 1641 * - decoding: unused
11f18faf
MN
1642 */
1643 int prediction_method;
1644#define FF_PRED_LEFT 0
1645#define FF_PRED_PLANE 1
1646#define FF_PRED_MEDIAN 2
115329f1 1647
5d3cea3a 1648 /**
f5bccd85 1649 * sample aspect ratio (0 if unknown)
8e5af7a6 1650 * That is the width of a pixel divided by the height of the pixel.
f5bccd85
DB
1651 * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1652 * - encoding: Set by user.
1653 * - decoding: Set by libavcodec.
5d3cea3a 1654 */
5ff85f1d 1655 AVRational sample_aspect_ratio;
1e491e29
MN
1656
1657 /**
f5bccd85
DB
1658 * the picture in the bitstream
1659 * - encoding: Set by libavcodec.
1660 * - decoding: Set by libavcodec.
1e491e29 1661 */
492cd3a9 1662 AVFrame *coded_frame;
c8c437bc
MN
1663
1664 /**
f5bccd85
DB
1665 * debug
1666 * - encoding: Set by user.
1667 * - decoding: Set by user.
c8c437bc
MN
1668 */
1669 int debug;
273b0cd3
DB
1670#define FF_DEBUG_PICT_INFO 1
1671#define FF_DEBUG_RC 2
1672#define FF_DEBUG_BITSTREAM 4
1673#define FF_DEBUG_MB_TYPE 8
1674#define FF_DEBUG_QP 16
1675#define FF_DEBUG_MV 32
1676#define FF_DEBUG_DCT_COEFF 0x00000040
1677#define FF_DEBUG_SKIP 0x00000080
1678#define FF_DEBUG_STARTCODE 0x00000100
1679#define FF_DEBUG_PTS 0x00000200
1680#define FF_DEBUG_ER 0x00000400
1681#define FF_DEBUG_MMCO 0x00000800
1682#define FF_DEBUG_BUGS 0x00001000
1683#define FF_DEBUG_VIS_QP 0x00002000
864119b6 1684#define FF_DEBUG_VIS_MB_TYPE 0x00004000
385c820b 1685#define FF_DEBUG_BUFFERS 0x00008000
115329f1 1686
140cb663 1687 /**
f5bccd85
DB
1688 * debug
1689 * - encoding: Set by user.
1690 * - decoding: Set by user.
0c9bbaec
WH
1691 */
1692 int debug_mv;
1693#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1694#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1695#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1696
1697 /**
f5bccd85
DB
1698 * error
1699 * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
64863965 1700 * - decoding: unused
140cb663
MN
1701 */
1702 uint64_t error[4];
115329f1 1703
17a70fde 1704 /**
f5bccd85 1705 * minimum MB quantizer
6e0d8c06 1706 * - encoding: unused
64863965 1707 * - decoding: unused
17a70fde
MN
1708 */
1709 int mb_qmin;
1710
1711 /**
f5bccd85 1712 * maximum MB quantizer
6e0d8c06 1713 * - encoding: unused
64863965 1714 * - decoding: unused
17a70fde
MN
1715 */
1716 int mb_qmax;
115329f1 1717
1457ab52 1718 /**
f5bccd85
DB
1719 * motion estimation comparison function
1720 * - encoding: Set by user.
64863965 1721 * - decoding: unused
1457ab52
MN
1722 */
1723 int me_cmp;
1724 /**
f5bccd85
DB
1725 * subpixel motion estimation comparison function
1726 * - encoding: Set by user.
64863965 1727 * - decoding: unused
1457ab52
MN
1728 */
1729 int me_sub_cmp;
1730 /**
f5bccd85
DB
1731 * macroblock comparison function (not supported yet)
1732 * - encoding: Set by user.
64863965 1733 * - decoding: unused
1457ab52
MN
1734 */
1735 int mb_cmp;
622348f9 1736 /**
f5bccd85
DB
1737 * interlaced DCT comparison function
1738 * - encoding: Set by user.
622348f9
MN
1739 * - decoding: unused
1740 */
1741 int ildct_cmp;
273b0cd3
DB
1742#define FF_CMP_SAD 0
1743#define FF_CMP_SSE 1
1744#define FF_CMP_SATD 2
1745#define FF_CMP_DCT 3
1746#define FF_CMP_PSNR 4
1747#define FF_CMP_BIT 5
1748#define FF_CMP_RD 6
1749#define FF_CMP_ZERO 7
1750#define FF_CMP_VSAD 8
1751#define FF_CMP_VSSE 9
1752#define FF_CMP_NSSE 10
1753#define FF_CMP_W53 11
1754#define FF_CMP_W97 12
0fd6aea1 1755#define FF_CMP_DCTMAX 13
27c61ac5 1756#define FF_CMP_DCT264 14
1457ab52 1757#define FF_CMP_CHROMA 256
115329f1 1758
1457ab52 1759 /**
f5bccd85
DB
1760 * ME diamond size & shape
1761 * - encoding: Set by user.
64863965 1762 * - decoding: unused
1457ab52
MN
1763 */
1764 int dia_size;
b07a5980
MN
1765
1766 /**
f5bccd85
DB
1767 * amount of previous MV predictors (2a+1 x 2a+1 square)
1768 * - encoding: Set by user.
64863965 1769 * - decoding: unused
b07a5980
MN
1770 */
1771 int last_predictor_count;
70ac76c0 1772
f5fb6b34 1773 /**
f5bccd85
DB
1774 * prepass for motion estimation
1775 * - encoding: Set by user.
64863965 1776 * - decoding: unused
f5fb6b34
MN
1777 */
1778 int pre_me;
b07a5980 1779
70ac76c0 1780 /**
f5bccd85
DB
1781 * motion estimation prepass comparison function
1782 * - encoding: Set by user.
64863965 1783 * - decoding: unused
70ac76c0
MN
1784 */
1785 int me_pre_cmp;
826f429a 1786
70ac76c0 1787 /**
f5bccd85
DB
1788 * ME prepass diamond size & shape
1789 * - encoding: Set by user.
64863965 1790 * - decoding: unused
70ac76c0
MN
1791 */
1792 int pre_dia_size;
1793
826f429a 1794 /**
f5bccd85
DB
1795 * subpel ME quality
1796 * - encoding: Set by user.
64863965 1797 * - decoding: unused
826f429a
MN
1798 */
1799 int me_subpel_quality;
1800
a33c7159 1801 /**
f5bccd85 1802 * callback to negotiate the pixelFormat
a33c7159 1803 * @param fmt is the list of formats which are supported by the codec,
f5bccd85
DB
1804 * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1805 * The first is always the native one.
1806 * @return the chosen format
64863965 1807 * - encoding: unused
f5bccd85 1808 * - decoding: Set by user, if not set the native format will be chosen.
a33c7159 1809 */
494c56d3 1810 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
e2f9490e
FB
1811
1812 /**
f5bccd85
DB
1813 * DTG active format information (additional aspect ratio
1814 * information only used in DVB MPEG-2 transport streams)
1815 * 0 if not set.
115329f1 1816 *
f5bccd85
DB
1817 * - encoding: unused
1818 * - decoding: Set by decoder.
e2f9490e
FB
1819 */
1820 int dtg_active_format;
1821#define FF_DTG_AFD_SAME 8
1822#define FF_DTG_AFD_4_3 9
1823#define FF_DTG_AFD_16_9 10
1824#define FF_DTG_AFD_14_9 11
1825#define FF_DTG_AFD_4_3_SP_14_9 13
1826#define FF_DTG_AFD_16_9_SP_14_9 14
1827#define FF_DTG_AFD_SP_4_3 15
1828
ebbcdc9a 1829 /**
f5bccd85
DB
1830 * maximum motion estimation search range in subpel units
1831 * If 0 then no limit.
115329f1 1832 *
f5bccd85
DB
1833 * - encoding: Set by user.
1834 * - decoding: unused
ebbcdc9a 1835 */
59e0ac8e 1836 int me_range;
ebbcdc9a 1837
65f7062d 1838 /**
f5bccd85
DB
1839 * intra quantizer bias
1840 * - encoding: Set by user.
1984f635
MN
1841 * - decoding: unused
1842 */
1843 int intra_quant_bias;
1844#define FF_DEFAULT_QUANT_BIAS 999999
115329f1 1845
1984f635 1846 /**
f5bccd85
DB
1847 * inter quantizer bias
1848 * - encoding: Set by user.
1984f635
MN
1849 * - decoding: unused
1850 */
1851 int inter_quant_bias;
5cd62665
ZK
1852
1853 /**
f5bccd85
DB
1854 * color table ID
1855 * - encoding: unused
1856 * - decoding: Which clrtable should be used for 8bit RGB images.
1857 * Tables have to be stored somewhere. FIXME
5cd62665
ZK
1858 */
1859 int color_table_id;
115329f1 1860
d90cf87b 1861 /**
f5bccd85
DB
1862 * internal_buffer count
1863 * Don't touch, used by libavcodec default_get_buffer().
d90cf87b
MN
1864 */
1865 int internal_buffer_count;
115329f1 1866
d90cf87b 1867 /**
f5bccd85
DB
1868 * internal_buffers
1869 * Don't touch, used by libavcodec default_get_buffer().
d90cf87b
MN
1870 */
1871 void *internal_buffer;
158c7f05
MN
1872
1873#define FF_LAMBDA_SHIFT 7
1874#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1875#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1876#define FF_LAMBDA_MAX (256*128-1)
1877
1878#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
3d2e8cce 1879 /**
f5bccd85
DB
1880 * Global quality for codecs which cannot change it per frame.
1881 * This should be proportional to MPEG-1/2/4 qscale.
1882 * - encoding: Set by user.
3d2e8cce
MN
1883 * - decoding: unused
1884 */
1885 int global_quality;
115329f1 1886
bd446bb1
MN
1887#define FF_CODER_TYPE_VLC 0
1888#define FF_CODER_TYPE_AC 1
f87459e4
KN
1889#define FF_CODER_TYPE_RAW 2
1890#define FF_CODER_TYPE_RLE 3
1891#define FF_CODER_TYPE_DEFLATE 4
11e659c2
MN
1892 /**
1893 * coder type
f5bccd85 1894 * - encoding: Set by user.
11e659c2
MN
1895 * - decoding: unused
1896 */
1897 int coder_type;
1898
1899 /**
1900 * context model
f5bccd85 1901 * - encoding: Set by user.
11e659c2
MN
1902 * - decoding: unused
1903 */
1904 int context_model;
5639729b
MN
1905#if 0
1906 /**
1907 *
1908 * - encoding: unused
f5bccd85 1909 * - decoding: Set by user.
5639729b
MN
1910 */
1911 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1912#endif
115329f1 1913
3bb07d61
MN
1914 /**
1915 * slice flags
1916 * - encoding: unused
f5bccd85 1917 * - decoding: Set by user.
3bb07d61
MN
1918 */
1919 int slice_flags;
1920#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1921#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1922#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1923
fb364ada
IK
1924 /**
1925 * XVideo Motion Acceleration
1926 * - encoding: forbidden
1927 * - decoding: set by decoder
1928 */
1929 int xvmc_acceleration;
115329f1 1930
7d1c3fc1
MN
1931 /**
1932 * macroblock decision mode
f5bccd85 1933 * - encoding: Set by user.
7d1c3fc1
MN
1934 * - decoding: unused
1935 */
1936 int mb_decision;
1937#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1938#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
e6dba5df 1939#define FF_MB_DECISION_RD 2 ///< rate distortion
d6eb3c50
MN
1940
1941 /**
1942 * custom intra quantization matrix
f5bccd85
DB
1943 * - encoding: Set by user, can be NULL.
1944 * - decoding: Set by libavcodec.
d6eb3c50
MN
1945 */
1946 uint16_t *intra_matrix;
1947
1948 /**
1949 * custom inter quantization matrix
f5bccd85
DB
1950 * - encoding: Set by user, can be NULL.
1951 * - decoding: Set by libavcodec.
d6eb3c50
MN
1952 */
1953 uint16_t *inter_matrix;
115329f1 1954
541ae140
MN
1955 /**
1956 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
f5bccd85 1957 * This is used to work around some encoder bugs.
541ae140 1958 * - encoding: unused
f5bccd85 1959 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
541ae140
MN
1960 */
1961 unsigned int stream_codec_tag;
05fbd0a2
MN
1962
1963 /**
f5bccd85
DB
1964 * scene change detection threshold
1965 * 0 is default, larger means fewer detected scene changes.
1966 * - encoding: Set by user.
05fbd0a2
MN
1967 * - decoding: unused
1968 */
1969 int scenechange_threshold;
158c7f05
MN
1970
1971 /**
f5bccd85
DB
1972 * minimum Lagrange multipler
1973 * - encoding: Set by user.
158c7f05
MN
1974 * - decoding: unused
1975 */
1976 int lmin;
1977
1978 /**
f5bccd85
DB
1979 * maximum Lagrange multipler
1980 * - encoding: Set by user.
158c7f05
MN
1981 * - decoding: unused
1982 */
1983 int lmax;
2a2bbcb0
MM
1984
1985 /**
f5bccd85 1986 * palette control structure
2a2bbcb0 1987 * - encoding: ??? (no palette-enabled encoder yet)
f5bccd85 1988 * - decoding: Set by user.
2a2bbcb0
MM
1989 */
1990 struct AVPaletteControl *palctrl;
821cb11f
MN
1991
1992 /**
1993 * noise reduction strength
f5bccd85 1994 * - encoding: Set by user.
821cb11f
MN
1995 * - decoding: unused
1996 */
1997 int noise_reduction;
115329f1 1998
074c4ca7 1999 /**
f5bccd85
DB
2000 * Called at the beginning of a frame to get cr buffer for it.
2001 * Buffer type (size, hints) must be the same. libavcodec won't check it.
2002 * libavcodec will pass previous buffer in pic, function should return
e1c2a5a0 2003 * same buffer or new buffer with old frame "painted" into it.
f5bccd85 2004 * If pic.data[0] == NULL must behave like get_buffer().
f1b99cc6
MN
2005 * if CODEC_CAP_DR1 is not set then reget_buffer() must call
2006 * avcodec_default_reget_buffer() instead of providing buffers allocated by
2007 * some other means.
074c4ca7 2008 * - encoding: unused
f5bccd85 2009 * - decoding: Set by libavcodec., user can override
074c4ca7 2010 */
e1c2a5a0 2011 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc
MN
2012
2013 /**
f5bccd85
DB
2014 * Number of bits which should be loaded into the rc buffer before decoding starts.
2015 * - encoding: Set by user.
ba58dabc
MN
2016 * - decoding: unused
2017 */
2018 int rc_initial_buffer_occupancy;
2019
2020 /**
2021 *
f5bccd85 2022 * - encoding: Set by user.
ba58dabc
MN
2023 * - decoding: unused
2024 */
2025 int inter_threshold;
2026
2027 /**
f5bccd85
DB
2028 * CODEC_FLAG2_*
2029 * - encoding: Set by user.
2030 * - decoding: Set by user.
ba58dabc
MN
2031 */
2032 int flags2;
7ebfc0ea
MN
2033
2034 /**
f5bccd85
DB
2035 * Simulates errors in the bitstream to test error concealment.
2036 * - encoding: Set by user.
2037 * - decoding: unused
7ebfc0ea
MN
2038 */
2039 int error_rate;
115329f1 2040
a1e257b2
MN
2041 /**
2042 * MP3 antialias algorithm, see FF_AA_* below.
2043 * - encoding: unused
f5bccd85 2044 * - decoding: Set by user.
a1e257b2
MN
2045 */
2046 int antialias_algo;
2047#define FF_AA_AUTO 0
2048#define FF_AA_FASTINT 1 //not implemented yet
2049#define FF_AA_INT 2
2050#define FF_AA_FLOAT 3
77ea0d4b 2051 /**
f5bccd85
DB
2052 * quantizer noise shaping
2053 * - encoding: Set by user.
77ea0d4b
MN
2054 * - decoding: unused
2055 */
2056 int quantizer_noise_shaping;
9c3d33d6
MN
2057
2058 /**
f5bccd85 2059 * thread count
eafcac6a 2060 * is used to decide how many independent tasks should be passed to execute()
f5bccd85
DB
2061 * - encoding: Set by user.
2062 * - decoding: Set by user.
9c3d33d6
MN
2063 */
2064 int thread_count;
115329f1 2065
9c3d33d6 2066 /**
f5bccd85
DB
2067 * The codec may call this to execute several independent things.
2068 * It will return only after finishing all tasks.
2069 * The user may replace this with some multithreaded implementation,
2070 * the default implementation will execute the parts serially.
399cec2f 2071 * @param count the number of things to execute
f5bccd85
DB
2072 * - encoding: Set by libavcodec, user can override.
2073 * - decoding: Set by libavcodec, user can override.
9c3d33d6 2074 */
3a84713a 2075 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
115329f1 2076
9c3d33d6 2077 /**
f5bccd85
DB
2078 * thread opaque
2079 * Can be used by execute() to store some per AVCodecContext stuff.
9c3d33d6
MN
2080 * - encoding: set by execute()
2081 * - decoding: set by execute()
2082 */
2083 void *thread_opaque;
a4d36c11
MN
2084
2085 /**
f5bccd85
DB
2086 * Motion estimation threshold below which no motion estimation is
2087 * performed, but instead the user specified motion vectors are used.
115329f1 2088 *
f5bccd85 2089 * - encoding: Set by user.
f20f8a8b 2090 * - decoding: unused
a4d36c11 2091 */
2750b827 2092 int me_threshold;
f20f8a8b
MN
2093
2094 /**
f5bccd85
DB
2095 * Macroblock threshold below which the user specified macroblock types will be used.
2096 * - encoding: Set by user.
f20f8a8b
MN
2097 * - decoding: unused
2098 */
2099 int mb_threshold;
bf266e19
MN
2100
2101 /**
f5bccd85
DB
2102 * precision of the intra DC coefficient - 8
2103 * - encoding: Set by user.
bf266e19
MN
2104 * - decoding: unused
2105 */
2106 int intra_dc_precision;
d4c5d2ad
MN
2107
2108 /**
f5bccd85
DB
2109 * noise vs. sse weight for the nsse comparsion function
2110 * - encoding: Set by user.
d4c5d2ad
MN
2111 * - decoding: unused
2112 */
2113 int nsse_weight;
0dfd33c3
MN
2114
2115 /**
f5bccd85 2116 * Number of macroblock rows at the top which are skipped.
0dfd33c3 2117 * - encoding: unused
f5bccd85 2118 * - decoding: Set by user.
0dfd33c3
MN
2119 */
2120 int skip_top;
2121
2122 /**
f5bccd85 2123 * Number of macroblock rows at the bottom which are skipped.
0dfd33c3 2124 * - encoding: unused
f5bccd85 2125 * - decoding: Set by user.
0dfd33c3
MN
2126 */
2127 int skip_bottom;
baced9f5
MN
2128
2129 /**
2130 * profile
f5bccd85
DB
2131 * - encoding: Set by user.
2132 * - decoding: Set by libavcodec.
baced9f5
MN
2133 */
2134 int profile;
2135#define FF_PROFILE_UNKNOWN -99
dd0cd3d2 2136
4f2c36ac 2137#define FF_PROFILE_AAC_MAIN 0
273b0cd3
DB
2138#define FF_PROFILE_AAC_LOW 1
2139#define FF_PROFILE_AAC_SSR 2
2140#define FF_PROFILE_AAC_LTP 3
baced9f5 2141
dd0cd3d2
RC
2142#define FF_PROFILE_H264_BASELINE 66
2143#define FF_PROFILE_H264_MAIN 77
2144#define FF_PROFILE_H264_EXTENDED 88
2145#define FF_PROFILE_H264_HIGH 100
2146#define FF_PROFILE_H264_HIGH_10 110
2147#define FF_PROFILE_H264_HIGH_422 122
2148#define FF_PROFILE_H264_HIGH_444 244
2149#define FF_PROFILE_H264_CAVLC_444 44
2150
baced9f5
MN
2151 /**
2152 * level
f5bccd85
DB
2153 * - encoding: Set by user.
2154 * - decoding: Set by libavcodec.
baced9f5
MN
2155 */
2156 int level;
2157#define FF_LEVEL_UNKNOWN -99
178fcca8
MN
2158
2159 /**
f5bccd85 2160 * low resolution decoding, 1-> 1/2 size, 2->1/4 size
178fcca8 2161 * - encoding: unused
f5bccd85 2162 * - decoding: Set by user.
178fcca8
MN
2163 */
2164 int lowres;
21adafec
MN
2165
2166 /**
f5bccd85
DB
2167 * Bitstream width / height, may be different from width/height if lowres
2168 * or other things are used.
21adafec 2169 * - encoding: unused
f5bccd85 2170 * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
21adafec
MN
2171 */
2172 int coded_width, coded_height;
bbf18b21
MN
2173
2174 /**
2175 * frame skip threshold
f5bccd85 2176 * - encoding: Set by user.
bbf18b21
MN
2177 * - decoding: unused
2178 */
2179 int frame_skip_threshold;
2180
2181 /**
2182 * frame skip factor
f5bccd85 2183 * - encoding: Set by user.
bbf18b21
MN
2184 * - decoding: unused
2185 */
2186 int frame_skip_factor;
0fd6aea1
MN
2187
2188 /**
2189 * frame skip exponent
f5bccd85 2190 * - encoding: Set by user.
0fd6aea1
MN
2191 * - decoding: unused
2192 */
2193 int frame_skip_exp;
2194
2195 /**
f5bccd85
DB
2196 * frame skip comparison function
2197 * - encoding: Set by user.
0fd6aea1
MN
2198 * - decoding: unused
2199 */
2200 int frame_skip_cmp;
957c743a
CM
2201
2202 /**
f5bccd85 2203 * Border processing masking, raises the quantizer for mbs on the borders
957c743a 2204 * of the picture.
f5bccd85 2205 * - encoding: Set by user.
957c743a
CM
2206 * - decoding: unused
2207 */
2208 float border_masking;
6e0d8c06
MN
2209
2210 /**
f5bccd85
DB
2211 * minimum MB lagrange multipler
2212 * - encoding: Set by user.
6e0d8c06
MN
2213 * - decoding: unused
2214 */
2215 int mb_lmin;
2216
2217 /**
f5bccd85
DB
2218 * maximum MB lagrange multipler
2219 * - encoding: Set by user.
6e0d8c06
MN
2220 * - decoding: unused
2221 */
2222 int mb_lmax;
09c3e44e
MN
2223
2224 /**
115329f1 2225 *
f5bccd85 2226 * - encoding: Set by user.
09c3e44e
MN
2227 * - decoding: unused
2228 */
2229 int me_penalty_compensation;
8c3eba7c
MN
2230
2231 /**
115329f1 2232 *
8c3eba7c 2233 * - encoding: unused
f5bccd85 2234 * - decoding: Set by user.
8c3eba7c
MN
2235 */
2236 enum AVDiscard skip_loop_filter;
2237
2238 /**
115329f1 2239 *
8c3eba7c 2240 * - encoding: unused
f5bccd85 2241 * - decoding: Set by user.
8c3eba7c
MN
2242 */
2243 enum AVDiscard skip_idct;
2244
2245 /**
115329f1 2246 *
8c3eba7c 2247 * - encoding: unused
f5bccd85 2248 * - decoding: Set by user.
8c3eba7c
MN
2249 */
2250 enum AVDiscard skip_frame;
316a2ec8
MN
2251
2252 /**
2253 *
f5bccd85 2254 * - encoding: Set by user.
316a2ec8
MN
2255 * - decoding: unused
2256 */
2257 int bidir_refine;
e8501c93
MN
2258
2259 /**
2260 *
f5bccd85 2261 * - encoding: Set by user.
e8501c93
MN
2262 * - decoding: unused
2263 */
2264 int brd_scale;
58f7833e
RS
2265
2266 /**
2267 * constant rate factor - quality-based VBR - values ~correspond to qps
f5bccd85 2268 * - encoding: Set by user.
58f7833e
RS
2269 * - decoding: unused
2270 */
9f1c1c99 2271 float crf;
58f7833e
RS
2272
2273 /**
2274 * constant quantization parameter rate control method
f5bccd85 2275 * - encoding: Set by user.
58f7833e
RS
2276 * - decoding: unused
2277 */
2278 int cqp;
2279
2280 /**
f5bccd85
DB
2281 * minimum GOP size
2282 * - encoding: Set by user.
58f7833e
RS
2283 * - decoding: unused
2284 */
2285 int keyint_min;
2286
2287 /**
2288 * number of reference frames
f5bccd85 2289 * - encoding: Set by user.
53d55e9e 2290 * - decoding: Set by lavc.
58f7833e
RS
2291 */
2292 int refs;
2293
2294 /**
2295 * chroma qp offset from luma
f5bccd85 2296 * - encoding: Set by user.
58f7833e
RS
2297 * - decoding: unused
2298 */
2299 int chromaoffset;
2300
2301 /**
f5bccd85
DB
2302 * Influences how often B-frames are used.
2303 * - encoding: Set by user.
58f7833e
RS
2304 * - decoding: unused
2305 */
2306 int bframebias;
2307
2308 /**
2309 * trellis RD quantization
f5bccd85 2310 * - encoding: Set by user.
58f7833e
RS
2311 * - decoding: unused
2312 */
2313 int trellis;
2314
2315 /**
f5bccd85
DB
2316 * Reduce fluctuations in qp (before curve compression).
2317 * - encoding: Set by user.
58f7833e
RS
2318 * - decoding: unused
2319 */
2320 float complexityblur;
2321
2322 /**
2323 * in-loop deblocking filter alphac0 parameter
2324 * alpha is in the range -6...6
f5bccd85 2325 * - encoding: Set by user.
58f7833e
RS
2326 * - decoding: unused
2327 */
2328 int deblockalpha;
2329
2330 /**
2331 * in-loop deblocking filter beta parameter
2332 * beta is in the range -6...6
f5bccd85 2333 * - encoding: Set by user.
58f7833e
RS
2334 * - decoding: unused
2335 */
2336 int deblockbeta;
2337
2338 /**
2339 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
f5bccd85 2340 * - encoding: Set by user.
58f7833e
RS
2341 * - decoding: unused
2342 */
2343 int partitions;
56cc85a0
DB
2344#define X264_PART_I4X4 0x001 /* Analyze i4x4 */
2345#define X264_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
2346#define X264_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
2347#define X264_PART_P4X4 0x020 /* Analyze p8x4, p4x8, p4x4 */
2348#define X264_PART_B8X8 0x100 /* Analyze b16x8, b8x16 and b8x8 */
58f7833e
RS
2349
2350 /**
30ab4ded 2351 * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
f5bccd85 2352 * - encoding: Set by user.
58f7833e
RS
2353 * - decoding: unused
2354 */
2355 int directpred;
4f59b684 2356
14f0c8e2 2357 /**
02c164c1 2358 * Audio cutoff bandwidth (0 means "automatic")
f5bccd85 2359 * - encoding: Set by user.
14f0c8e2
LA
2360 * - decoding: unused
2361 */
2362 int cutoff;
39a64e30
CH
2363
2364 /**
f5bccd85
DB
2365 * Multiplied by qscale for each frame and added to scene_change_score.
2366 * - encoding: Set by user.
39a64e30
CH
2367 * - decoding: unused
2368 */
2369 int scenechange_factor;
1dd509b1
MN
2370
2371 /**
2372 *
f5bccd85
DB
2373 * Note: Value depends upon the compare function used for fullpel ME.
2374 * - encoding: Set by user.
1dd509b1
MN
2375 * - decoding: unused
2376 */
2377 int mv0_threshold;
f9243d34
CH
2378
2379 /**
f5bccd85
DB
2380 * Adjusts sensitivity of b_frame_strategy 1.
2381 * - encoding: Set by user.
f9243d34
CH
2382 * - decoding: unused
2383 */
2384 int b_sensitivity;
a403fc03
JR
2385
2386 /**
f5bccd85 2387 * - encoding: Set by user.
a403fc03
JR
2388 * - decoding: unused
2389 */
2390 int compression_level;
2391#define FF_COMPRESSION_DEFAULT -1
2392
2393 /**
f5bccd85
DB
2394 * Sets whether to use LPC mode - used by FLAC encoder.
2395 * - encoding: Set by user.
2396 * - decoding: unused
a403fc03
JR
2397 */
2398 int use_lpc;
2399
2400 /**
2401 * LPC coefficient precision - used by FLAC encoder
f5bccd85
DB
2402 * - encoding: Set by user.
2403 * - decoding: unused
a403fc03
JR
2404 */
2405 int lpc_coeff_precision;
2406
2407 /**
f5bccd85
DB
2408 * - encoding: Set by user.
2409 * - decoding: unused
a403fc03
JR
2410 */
2411 int min_prediction_order;
2412
2413 /**
f5bccd85
DB
2414 * - encoding: Set by user.
2415 * - decoding: unused
a403fc03
JR
2416 */
2417 int max_prediction_order;
2418
2419 /**
2420 * search method for selecting prediction order
f5bccd85
DB
2421 * - encoding: Set by user.
2422 * - decoding: unused
a403fc03
JR
2423 */
2424 int prediction_order_method;
2425
2426 /**
f5bccd85
DB
2427 * - encoding: Set by user.
2428 * - decoding: unused
a403fc03
JR
2429 */
2430 int min_partition_order;
2431
2432 /**
f5bccd85
DB
2433 * - encoding: Set by user.
2434 * - decoding: unused
a403fc03
JR
2435 */
2436 int max_partition_order;
80d617f5
BC
2437
2438 /**
2439 * GOP timecode frame start number, in non drop frame format
f5bccd85
DB
2440 * - encoding: Set by user.
2441 * - decoding: unused
80d617f5
BC
2442 */
2443 int64_t timecode_frame_start;
b1ec601f 2444
0d72e7d0 2445#if LIBAVCODEC_VERSION_MAJOR < 53
b1ec601f 2446 /**
85947156
VS
2447 * Decoder should decode to this many channels if it can (0 for default)
2448 * - encoding: unused
2449 * - decoding: Set by user.
0d72e7d0 2450 * @deprecated Deprecated in favor of request_channel_layout.
b1ec601f
RD
2451 */
2452 int request_channels;
0d72e7d0 2453#endif
1408352a
JR
2454
2455 /**
2456 * Percentage of dynamic range compression to be applied by the decoder.
2457 * The default value is 1.0, corresponding to full compression.
2458 * - encoding: unused
2459 * - decoding: Set by user.
2460 */
2461 float drc_scale;
79de84f2
MN
2462
2463 /**
2464 * opaque 64bit number (generally a PTS) that will be reordered and
2465 * output in AVFrame.reordered_opaque
2466 * - encoding: unused
2467 * - decoding: Set by user.
2468 */
2469 int64_t reordered_opaque;
312420f3
PR
2470
2471 /**
2472 * Bits per sample/pixel of internal libavcodec pixel/sample format.
2473 * This field is applicable only when sample_fmt is SAMPLE_FMT_S32.
2474 * - encoding: set by user.
2475 * - decoding: set by libavcodec.
2476 */
2477 int bits_per_raw_sample;
0d72e7d0
PR
2478
2479 /**
2480 * Audio channel layout.
2481 * - encoding: set by user.
2482 * - decoding: set by libavcodec.
2483 */
2484 int64_t channel_layout;
2485
2486 /**
2487 * Request decoder to use this channel layout if it can (0 for default)
2488 * - encoding: unused
2489 * - decoding: Set by user.
2490 */
2491 int64_t request_channel_layout;
3bff4d8b
BC
2492
2493 /**
2494 * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2495 * - encoding: Set by user.
2496 * - decoding: unused.
2497 */
2498 float rc_max_available_vbv_use;
2499
2500 /**
2501 * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
2502 * - encoding: Set by user.
2503 * - decoding: unused.
2504 */
2505 float rc_min_vbv_overflow_use;
40e5d31b
GB
2506
2507 /**
2508 * Hardware accelerator in use
2509 * - encoding: unused.
2510 * - decoding: Set by libavcodec
2511 */
2512 struct AVHWAccel *hwaccel;
3797c74b
MN
2513
2514 /**
2515 * For some codecs, the time base is closer to the field rate than the frame rate.
2516 * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
2517 * if no telecine is used ...
2518 *
2519 * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
2520 */
2521 int ticks_per_frame;
1aea7018
GB
2522
2523 /**
2524 * Hardware accelerator context.
2525 * For some hardware accelerators, a global context needs to be
2526 * provided by the user. In that case, this holds display-dependent
2527 * data FFmpeg cannot instantiate itself. Please refer to the
2528 * FFmpeg HW accelerator documentation to know how to fill this
2529 * is. e.g. for VA API, this is a struct vaapi_context.
2530 * - encoding: unused
2531 * - decoding: Set by user
2532 */
2533 void *hwaccel_context;
4ee6a5c1
MN
2534
2535 /**
2536 * Chromaticity coordinates of the source primaries.
2537 * - encoding: Set by user
2538 * - decoding: Set by libavcodec
2539 */
2540 enum AVColorPrimaries color_primaries;
2541
2542 /**
2543 * Color Transfer Characteristic.
2544 * - encoding: Set by user
2545 * - decoding: Set by libavcodec
2546 */
2547 enum AVColorTransferCharacteristic color_trc;
2548
2549 /**
2550 * YUV colorspace type.
2551 * - encoding: Set by user
2552 * - decoding: Set by libavcodec
2553 */
2554 enum AVColorSpace colorspace;
2555
2556 /**
2557 * MPEG vs JPEG YUV range.
2558 * - encoding: Set by user
2559 * - decoding: Set by libavcodec
2560 */
2561 enum AVColorRange color_range;
580a7465
DC
2562
2563 /**
2564 * This defines the location of chroma samples.
2565 * - encoding: Set by user
2566 * - decoding: Set by libavcodec
2567 */
8ea08bec 2568 enum AVChromaLocation chroma_sample_location;
8d23a86f
RD
2569
2570 /**
2571 * The codec may call this to execute several independent things.
2572 * It will return only after finishing all tasks.
2573 * The user may replace this with some multithreaded implementation,
2574 * the default implementation will execute the parts serially.
2575 * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
2576 * @param c context passed also to func
2577 * @param count the number of things to execute
2578 * @param arg2 argument passed unchanged to func
2579 * @param ret return values of executed functions, must have space for "count" values. May be NULL.
2580 * @param func function that will be called count times, with jobnr from 0 to count-1.
2581 * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
2582 * two instances of func executing at the same time will have the same threadnr.
2583 * @return always 0 currently, but code should handle a future improvement where when any call to func
2584 * returns < 0 no further calls to func may be done and < 0 is returned.
2585 * - encoding: Set by libavcodec, user can override.
2586 * - decoding: Set by libavcodec, user can override.
2587 */
2588 int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
096c87f6
JGG
2589
2590 /**
2591 * explicit P-frame weighted prediction analysis method
2592 * 0: off
2593 * 1: fast blind weighting (one reference duplicate with -1 offset)
2594 * 2: smart weighting (full fade detection analysis)
2595 * - encoding: Set by user.
2596 * - decoding: unused
2597 */
2598 int weighted_p_pred;
de6d9b64
FB
2599} AVCodecContext;
2600
64863965
MN
2601/**
2602 * AVCodec.
2603 */
de6d9b64 2604typedef struct AVCodec {
6b0cdb6e
NG
2605 /**
2606 * Name of the codec implementation.
2607 * The name is globally unique among encoders and among decoders (but an
2608 * encoder and a decoder can share the same name).
2609 * This is the primary way to find a codec from the user perspective.
2610 */
18f77016 2611 const char *name;
5d234974 2612 enum CodecType type;
9297ddd3 2613 enum CodecID id;
de6d9b64
FB
2614 int priv_data_size;
2615 int (*init)(AVCodecContext *);
0c1a9eda 2616 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
de6d9b64 2617 int (*close)(AVCodecContext *);
7a00bbad 2618 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
a2d11246
MN
2619 /**
2620 * Codec capabilities.
2621 * see CODEC_CAP_*
2622 */
bf89e6b1 2623 int capabilities;
de6d9b64 2624 struct AVCodec *next;
c8cf325a
MN
2625 /**
2626 * Flush buffers.
2627 * Will be called when seeking
2628 */
7a06ff14 2629 void (*flush)(AVCodecContext *);
716e31ea 2630 const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
1beb670a 2631 const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
fe4bf374 2632 /**
bf7e799c
SS
2633 * Descriptive name for the codec, meant to be more human readable than name.
2634 * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
fe4bf374
SS
2635 */
2636 const char *long_name;
3ade5d56 2637 const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
88a07af7 2638 const enum SampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
0d72e7d0 2639 const int64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
de6d9b64
FB
2640} AVCodec;
2641
97d96aaa 2642/**
40e5d31b
GB
2643 * AVHWAccel.
2644 */
2645typedef struct AVHWAccel {
2646 /**
2647 * Name of the hardware accelerated codec.
2648 * The name is globally unique among encoders and among decoders (but an
2649 * encoder and a decoder can share the same name).
2650 */
2651 const char *name;
2652
2653 /**
2654 * Type of codec implemented by the hardware accelerator.
2655 *
2656 * See CODEC_TYPE_xxx
2657 */
2658 enum CodecType type;
2659
2660 /**
2661 * Codec implemented by the hardware accelerator.
2662 *
2663 * See CODEC_ID_xxx
2664 */
2665 enum CodecID id;
2666
2667 /**
2668 * Supported pixel format.
2669 *
2670 * Only hardware accelerated formats are supported here.
2671 */
2672 enum PixelFormat pix_fmt;
2673
2674 /**
2675 * Hardware accelerated codec capabilities.
2676 * see FF_HWACCEL_CODEC_CAP_*
2677 */
2678 int capabilities;
2679
2680 struct AVHWAccel *next;
2681
2682 /**
2683 * Called at the beginning of each frame or field picture.
2684 *
2685 * Meaningful frame information (codec specific) is guaranteed to
2686 * be parsed at this point. This function is mandatory.
2687 *
bf7e799c 2688 * Note that buf can be NULL along with buf_size set to 0.
40e5d31b
GB
2689 * Otherwise, this means the whole frame is available at this point.
2690 *
2691 * @param avctx the codec context
2692 * @param buf the frame data buffer base
2693 * @param buf_size the size of the frame in bytes
2694 * @return zero if successful, a negative value otherwise
2695 */
2696 int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
2697
2698 /**
2699 * Callback for each slice.
2700 *
2701 * Meaningful slice information (codec specific) is guaranteed to
2702 * be parsed at this point. This function is mandatory.
2703 *
2704 * @param avctx the codec context
2705 * @param buf the slice data buffer base
2706 * @param buf_size the size of the slice in bytes
2707 * @return zero if successful, a negative value otherwise
2708 */
2709 int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
2710
2711 /**
2712 * Called at the end of each frame or field picture.
2713 *
2714 * The whole picture is parsed at this point and can now be sent
2715 * to the hardware accelerator. This function is mandatory.
2716 *
2717 * @param avctx the codec context
2718 * @return zero if successful, a negative value otherwise
2719 */
2720 int (*end_frame)(AVCodecContext *avctx);
68e5d523
GB
2721
2722 /**
2723 * Size of HW accelerator private data.
2724 *
cd823ff9
GB
2725 * Private data is allocated with av_mallocz() before
2726 * AVCodecContext.get_buffer() and deallocated after
2727 * AVCodecContext.release_buffer().
68e5d523
GB
2728 */
2729 int priv_data_size;
40e5d31b
GB
2730} AVHWAccel;
2731
2732/**
d7425f59
MN
2733 * four components are given, that's all.
2734 * the last component is alpha
2735 */
de6d9b64 2736typedef struct AVPicture {
0c1a9eda 2737 uint8_t *data[4];
cd394651 2738 int linesize[4]; ///< number of bytes per line
de6d9b64
FB
2739} AVPicture;
2740
2bbd8571 2741#if LIBAVCODEC_VERSION_MAJOR < 53
ba118447 2742/**
85947156
VS
2743 * AVPaletteControl
2744 * This structure defines a method for communicating palette changes
2745 * between and demuxer and a decoder.
2746 *
671adb17 2747 * @deprecated Use AVPacket to send palette changes instead.
85947156 2748 * This is totally broken.
ba118447 2749 */
2e99641b 2750#define AVPALETTE_SIZE 1024
432d84c3 2751#define AVPALETTE_COUNT 256
ba118447
MM
2752typedef struct AVPaletteControl {
2753
f5bccd85
DB
2754 /* Demuxer sets this to 1 to indicate the palette has changed;
2755 * decoder resets to 0. */
ba118447
MM
2756 int palette_changed;
2757
2a2bbcb0
MM
2758 /* 4-byte ARGB palette entries, stored in native byte order; note that
2759 * the individual palette components should be on a 8-bit scale; if
f5bccd85
DB
2760 * the palette data comes from an IBM VGA native format, the component
2761 * data is probably 6 bits in size and needs to be scaled. */
2e99641b 2762 unsigned int palette[AVPALETTE_COUNT];
ba118447 2763
18239edf 2764} AVPaletteControl attribute_deprecated;
2bbd8571 2765#endif
ba118447 2766
c66216ed
MN
2767enum AVSubtitleType {
2768 SUBTITLE_NONE,
2769
2770 SUBTITLE_BITMAP, ///< A bitmap, pict will be set
2771
2772 /**
2773 * Plain text, the text field must be set by the decoder and is
2774 * authoritative. ass and pict fields may contain approximations.
2775 */
2776 SUBTITLE_TEXT,
2777
2778 /**
2779 * Formatted text, the ass field must be set by the decoder and is
2780 * authoritative. pict and text fields may contain approximations.
2781 */
2782 SUBTITLE_ASS,
2783};
2784
c6ec28b1 2785typedef struct AVSubtitleRect {
ebc466bb
MN
2786 int x; ///< top left corner of pict, undefined when pict is not set
2787 int y; ///< top left corner of pict, undefined when pict is not set
2788 int w; ///< width of pict, undefined when pict is not set
2789 int h; ///< height of pict, undefined when pict is not set
2790 int nb_colors; ///< number of colors in pict, undefined when pict is not set
25b4c651
MN
2791
2792 /**
2793 * data+linesize for the bitmap of this subtitle.
2794 * can be set for text/ass as well once they where rendered
2795 */
2796 AVPicture pict;
f656106f
MN
2797 enum AVSubtitleType type;
2798
2799 char *text; ///< 0 terminated plain UTF-8 text
2800
2801 /**
2802 * 0 terminated ASS/SSA compatible event line.
2803 * The pressentation of this is unaffected by the other values in this
2804 * struct.
2805 */
2806 char *ass;
c6ec28b1
MN
2807} AVSubtitleRect;
2808
2809typedef struct AVSubtitle {
2810 uint16_t format; /* 0 = graphics */
2811 uint32_t start_display_time; /* relative to packet pts, in ms */
2812 uint32_t end_display_time; /* relative to packet pts, in ms */
ebc466bb 2813 unsigned num_rects;
db4fac64 2814 AVSubtitleRect **rects;
4bbe788a 2815 int64_t pts; ///< Same as packet pts, in AV_TIME_BASE
240c1657
FB
2816} AVSubtitle;
2817
cdd8930e
TB
2818/* packet functions */
2819
80d403fc
RD
2820/**
2821 * @deprecated use NULL instead
2822 */
2823attribute_deprecated void av_destruct_packet_nofree(AVPacket *pkt);
cdd8930e
TB
2824
2825/**
2826 * Default packet destructor.
2827 */
2828void av_destruct_packet(AVPacket *pkt);
2829
2830/**
2831 * Initialize optional fields of a packet with default values.
2832 *
2833 * @param pkt packet
2834 */
2835void av_init_packet(AVPacket *pkt);
2836
2837/**
2838 * Allocate the payload of a packet and initialize its fields with
2839 * default values.
2840 *
2841 * @param pkt packet
2842 * @param size wanted payload size
2843 * @return 0 if OK, AVERROR_xxx otherwise
2844 */
2845int av_new_packet(AVPacket *pkt, int size);
2846
2847/**
feb993e5
RD
2848 * Reduce packet size, correctly zeroing padding
2849 *
2850 * @param pkt packet
2851 * @param size new size
2852 */
2853void av_shrink_packet(AVPacket *pkt, int size);
2854
2855/**
cdd8930e
TB
2856 * @warning This is a hack - the packet memory allocation stuff is broken. The
2857 * packet is allocated if it was not really allocated.
2858 */
2859int av_dup_packet(AVPacket *pkt);
2860
2861/**
2862 * Free a packet.
2863 *
2864 * @param pkt packet to free
2865 */
ce1d9c85 2866void av_free_packet(AVPacket *pkt);
240c1657 2867
de6d9b64
FB
2868/* resample.c */
2869
2870struct ReSampleContext;
aaaf1635 2871struct AVResampleContext;
de6d9b64
FB
2872
2873typedef struct ReSampleContext ReSampleContext;
2874
d1e3c6fd
BC
2875#if LIBAVCODEC_VERSION_MAJOR < 53
2876/**
2877 * @deprecated Use av_audio_resample_init() instead.
2878 */
2879attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2880 int output_rate, int input_rate);
2881#endif
2882/**
2883 * Initializes audio resampling context
2884 *
2885 * @param output_channels number of output channels
2886 * @param input_channels number of input channels
2887 * @param output_rate output sample rate
2888 * @param input_rate input sample rate
2889 * @param sample_fmt_out requested output sample format
2890 * @param sample_fmt_in input sample format
2891 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
2892 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
2893 * @param linear If 1 then the used FIR filter will be linearly interpolated
2894 between the 2 closest, if 0 the closest will be used
2895 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
2896 * @return allocated ReSampleContext, NULL if error occured
2897 */
2898ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
2899 int output_rate, int input_rate,
2900 enum SampleFormat sample_fmt_out,
2901 enum SampleFormat sample_fmt_in,
2902 int filter_length, int log2_phase_count,
2903 int linear, double cutoff);
2904
de6d9b64
FB
2905int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2906void audio_resample_close(ReSampleContext *s);
2907
3136fcf4
MN
2908
2909/**
2910 * Initializes an audio resampler.
2911 * Note, if either rate is not an integer then simply scale both rates up so they are.
990058bd
MN
2912 * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
2913 * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
2914 * @param linear If 1 then the used FIR filter will be linearly interpolated
2915 between the 2 closest, if 0 the closest will be used
2916 * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
3136fcf4 2917 */
6e225de2 2918struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
3136fcf4
MN
2919
2920/**
2921 * resamples.
2922 * @param src an array of unconsumed samples
2923 * @param consumed the number of samples of src which have been consumed are returned here
2924 * @param src_size the number of unconsumed samples available
2925 * @param dst_size the amount of space in samples available in dst
2926 * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context.
2927 * @return the number of samples written in dst or -1 if an error occurred
2928 */
aaaf1635 2929int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
3136fcf4
MN
2930
2931
2932/**
2933 * Compensates samplerate/timestamp drift. The compensation is done by changing
2934 * the resampler parameters, so no audible clicks or similar distortions occur
2935 * @param compensation_distance distance in output samples over which the compensation should be performed
2936 * @param sample_delta number of output samples which should be output less
2937 *
2938 * example: av_resample_compensate(c, 10, 500)
2939 * here instead of 510 samples only 500 samples would be output
2940 *
2941 * note, due to rounding the actual compensation might be slightly different,
2942 * especially if the compensation_distance is large and the in_rate used during init is small
2943 */
2d48eddd 2944void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
d88443ae 2945void av_resample_close(struct AVResampleContext *c);
aaaf1635 2946
75917b88
DH
2947/**
2948 * Allocate memory for a picture. Call avpicture_free to free it.
2949 *
f5bccd85
DB
2950 * @param picture the picture to be filled in
2951 * @param pix_fmt the format of the picture
2952 * @param width the width of the picture
2953 * @param height the height of the picture
2954 * @return zero if successful, a negative value if not
75917b88 2955 */
a61ec8e7 2956int avpicture_alloc(AVPicture *picture, enum PixelFormat pix_fmt, int width, int height);
75917b88 2957
8fc3d25c
PI
2958/**
2959 * Free a picture previously allocated by avpicture_alloc().
2960 *
f5bccd85 2961 * @param picture the AVPicture to be freed
8fc3d25c 2962 */
75917b88
DH
2963void avpicture_free(AVPicture *picture);
2964
392cf77a 2965/**
f5bccd85 2966 * Fill in the AVPicture fields.
392cf77a
PI
2967 * The fields of the given AVPicture are filled in by using the 'ptr' address
2968 * which points to the image data buffer. Depending on the specified picture
2969 * format, one or multiple image data pointers and line sizes will be set.
2970 * If a planar format is specified, several pointers will be set pointing to
2971 * the different picture planes and the line sizes of the different planes
2972 * will be stored in the lines_sizes array.
899a8fa1 2973 * Call with ptr == NULL to get the required size for the ptr buffer.
392cf77a 2974 *
f5bccd85 2975 * @param picture AVPicture whose fields are to be filled in
392cf77a 2976 * @param ptr Buffer which will contain or contains the actual image data
f5bccd85
DB
2977 * @param pix_fmt The format in which the picture data is stored.
2978 * @param width the width of the image in pixels
2979 * @param height the height of the image in pixels
2980 * @return size of the image data in bytes
392cf77a 2981 */
0c1a9eda 2982int avpicture_fill(AVPicture *picture, uint8_t *ptr,
4a30fff6 2983 enum PixelFormat pix_fmt, int width, int height);
a61ec8e7 2984int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
63167088 2985 unsigned char *dest, int dest_size);
392cf77a
PI
2986
2987/**
2988 * Calculate the size in bytes that a picture of the given width and height
2989 * would occupy if stored in the given picture format.
899a8fa1
RD
2990 * Note that this returns the size of a compact representation as generated
2991 * by avpicture_layout, which can be smaller than the size required for e.g.
2992 * avpicture_fill.
392cf77a 2993 *
f5bccd85
DB
2994 * @param pix_fmt the given picture format
2995 * @param width the width of the image
2996 * @param height the height of the image
899a8fa1 2997 * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
392cf77a 2998 */
a61ec8e7
SS
2999int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
3000void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
3001const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt);
21adafec 3002void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
d89f692f 3003
80a07f6e 3004#if LIBAVCODEC_VERSION_MAJOR < 53
d89f692f 3005/**
bf7e799c 3006 * Returns the pixel format corresponding to the name name.
d89f692f 3007 *
bf7e799c 3008 * If there is no pixel format with name name, then looks for a
d89f692f 3009 * pixel format with the name corresponding to the native endian
bf7e799c 3010 * format of name.
d89f692f
SS
3011 * For example in a little-endian system, first looks for "gray16",
3012 * then for "gray16le".
3013 *
bf7e799c 3014 * Finally if no pixel format has been found, returns PIX_FMT_NONE.
80a07f6e
SS
3015 *
3016 * @deprecated Deprecated in favor of av_get_pix_fmt().
d89f692f 3017 */
80a07f6e
SS
3018attribute_deprecated enum PixelFormat avcodec_get_pix_fmt(const char* name);
3019#endif
fa4dc9f0
SS
3020
3021/**
3022 * Returns a value representing the fourCC code associated to the
3023 * pixel format pix_fmt, or 0 if no associated fourCC code can be
3024 * found.
3025 */
3026unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat pix_fmt);
219b06c6 3027
81299d42
PI
3028#define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */
3029#define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */
3030#define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */
3031#define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */
3032#define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */
3033#define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
fab21997 3034
392cf77a 3035/**
81299d42
PI
3036 * Computes what kind of losses will occur when converting from one specific
3037 * pixel format to another.
3038 * When converting from one pixel format to another, information loss may occur.
3039 * For example, when converting from RGB24 to GRAY, the color information will
3040 * be lost. Similarly, other losses occur when converting from some formats to
3041 * other formats. These losses can involve loss of chroma, but also loss of
3042 * resolution, loss of color depth, loss due to the color space conversion, loss
3043 * of the alpha bits or loss due to color quantization.
f5bccd85
DB
3044 * avcodec_get_fix_fmt_loss() informs you about the various types of losses
3045 * which will occur when converting from one pixel format to another.
81299d42 3046 *
f5bccd85
DB
3047 * @param[in] dst_pix_fmt destination pixel format
3048 * @param[in] src_pix_fmt source pixel format
81299d42
PI
3049 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3050 * @return Combination of flags informing you what kind of losses will occur.
392cf77a 3051 */
a61ec8e7 3052int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
fab21997 3053 int has_alpha);
392cf77a
PI
3054
3055/**
81299d42
PI
3056 * Finds the best pixel format to convert to given a certain source pixel
3057 * format. When converting from one pixel format to another, information loss
3058 * may occur. For example, when converting from RGB24 to GRAY, the color
3059 * information will be lost. Similarly, other losses occur when converting from
3060 * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
f5bccd85
DB
3061 * the given pixel formats should be used to suffer the least amount of loss.
3062 * The pixel formats from which it chooses one, are determined by the
bf7e799c 3063 * pix_fmt_mask parameter.
81299d42
PI
3064 *
3065 * @code
3066 * src_pix_fmt = PIX_FMT_YUV420P;
3067 * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
3068 * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
3069 * @endcode
3070 *
f5bccd85
DB
3071 * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
3072 * @param[in] src_pix_fmt source pixel format
81299d42
PI
3073 * @param[in] has_alpha Whether the source pixel format alpha channel is used.
3074 * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
3075 * @return The best pixel format to convert to or -1 if none was found.
392cf77a 3076 */
a61ec8e7 3077enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
fab21997
FB
3078 int has_alpha, int *loss_ptr);
3079
c3b95b1d
SS
3080
3081/**
3082 * Print in buf the string corresponding to the pixel format with
3083 * number pix_fmt, or an header if pix_fmt is negative.
3084 *
9bd51b9a
PI
3085 * @param[in] buf the buffer where to write the string
3086 * @param[in] buf_size the size of buf
3087 * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or
c3b95b1d
SS
3088 * a negative value to print the corresponding header.
3089 * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1.
3090 */
a61ec8e7 3091void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt);
c3b95b1d 3092
0469baf1
FB
3093#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
3094#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
392cf77a
PI
3095
3096/**
3097 * Tell if an image really has transparent alpha values.
3098 * @return ored mask of FF_ALPHA_xxx constants
3099 */
da64ecc3 3100int img_get_alpha_info(const AVPicture *src,
a61ec8e7 3101 enum PixelFormat pix_fmt, int width, int height);
0469baf1 3102
219b06c6 3103/* deinterlace a picture */
392cf77a 3104/* deinterlace - if not supported return -1 */
da64ecc3 3105int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
a61ec8e7 3106 enum PixelFormat pix_fmt, int width, int height);
de6d9b64
FB
3107
3108/* external high level API */
3109
0334f799
SS
3110/**
3111 * If c is NULL, returns the first registered codec,
c1b02101 3112 * if c is non-NULL, returns the next registered codec after c,
0334f799
SS
3113 * or NULL if c is the last one.
3114 */
55b9e69a 3115AVCodec *av_codec_next(AVCodec *c);
de6d9b64 3116
96afa6be
SS
3117/**
3118 * Returns the LIBAVCODEC_VERSION_INT constant.
3119 */
51a49663 3120unsigned avcodec_version(void);
96afa6be 3121
f9ec0aa1 3122/**
c1736936
DB
3123 * Returns the libavcodec build-time configuration.
3124 */
41600690 3125const char *avcodec_configuration(void);
c1736936
DB
3126
3127/**
3128 * Returns the libavcodec license.
3129 */
41600690 3130const char *avcodec_license(void);
c1736936
DB
3131
3132/**
f9ec0aa1
PI