vc1dec: add flush function for WMV9 and VC-1 decoders
[libav.git] / libavcodec / avcodec.h
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1/*
2 * copyright (c) 2001 Fabrice Bellard
3 *
2912e87a 4 * This file is part of Libav.
b78e7197 5 *
2912e87a 6 * Libav 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 *
2912e87a 11 * Libav 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
2912e87a 17 * License along with Libav; 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
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21#ifndef AVCODEC_AVCODEC_H
22#define AVCODEC_AVCODEC_H
a96b68b7 23
36df8805 24/**
ba87f080 25 * @file
f5bccd85 26 * external API header
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27 */
28
c60208e7 29#include <errno.h>
737eb597 30#include "libavutil/samplefmt.h"
76a448ed 31#include "libavutil/avutil.h"
7160bb71 32#include "libavutil/cpu.h"
0b950fe2 33#include "libavutil/dict.h"
abc78a5a 34#include "libavutil/log.h"
d49ea4af 35#include "libavutil/pixfmt.h"
e91709ca 36#include "libavutil/rational.h"
de6d9b64 37
3dd851c4 38#include "libavcodec/version.h"
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39/**
40 * @defgroup libavc Encoding/Decoding Library
41 * @{
42 *
43 * @defgroup lavc_decoding Decoding
44 * @{
45 * @}
46 *
47 * @defgroup lavc_encoding Encoding
48 * @{
49 * @}
50 *
51 * @defgroup lavc_codec Codecs
52 * @{
53 * @defgroup lavc_codec_native Native Codecs
54 * @{
55 * @}
56 * @defgroup lavc_codec_wrappers External library wrappers
57 * @{
58 * @}
59 * @defgroup lavc_codec_hwaccel Hardware Accelerators bridge
60 * @{
61 * @}
62 * @}
63 * @defgroup lavc_internal Internal
64 * @{
65 * @}
66 * @}
67 *
68 */
69
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70/**
71 * @defgroup lavc_core Core functions/structures.
72 * @ingroup libavc
73 *
74 * Basic definitions, functions for querying libavcodec capabilities,
75 * allocating core structures, etc.
76 * @{
77 */
eda7c983 78
104e10fb 79
7ebf5927 80/**
48966b02 81 * Identify the syntax and semantics of the bitstream.
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82 * The principle is roughly:
83 * Two decoders with the same ID can decode the same streams.
84 * Two encoders with the same ID can encode compatible streams.
85 * There may be slight deviations from the principle due to implementation
86 * details.
7ebf5927 87 *
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88 * If you add a codec ID to this list, add it so that
89 * 1. no value of a existing codec ID changes (that would break ABI),
90 * 2. it is as close as possible to similar codecs.
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91 *
92 * After adding new codec IDs, do not forget to add an entry to the codec
93 * descriptor list and bump libavcodec minor version.
7ebf5927 94 */
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95enum AVCodecID {
96 AV_CODEC_ID_NONE,
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97
98 /* video codecs */
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99 AV_CODEC_ID_MPEG1VIDEO,
100 AV_CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
101 AV_CODEC_ID_MPEG2VIDEO_XVMC,
102 AV_CODEC_ID_H261,
103 AV_CODEC_ID_H263,
104 AV_CODEC_ID_RV10,
105 AV_CODEC_ID_RV20,
106 AV_CODEC_ID_MJPEG,
107 AV_CODEC_ID_MJPEGB,
108 AV_CODEC_ID_LJPEG,
109 AV_CODEC_ID_SP5X,
110 AV_CODEC_ID_JPEGLS,
111 AV_CODEC_ID_MPEG4,
112 AV_CODEC_ID_RAWVIDEO,
113 AV_CODEC_ID_MSMPEG4V1,
114 AV_CODEC_ID_MSMPEG4V2,
115 AV_CODEC_ID_MSMPEG4V3,
116 AV_CODEC_ID_WMV1,
117 AV_CODEC_ID_WMV2,
118 AV_CODEC_ID_H263P,
119 AV_CODEC_ID_H263I,
120 AV_CODEC_ID_FLV1,
121 AV_CODEC_ID_SVQ1,
122 AV_CODEC_ID_SVQ3,
123 AV_CODEC_ID_DVVIDEO,
124 AV_CODEC_ID_HUFFYUV,
125 AV_CODEC_ID_CYUV,
126 AV_CODEC_ID_H264,
127 AV_CODEC_ID_INDEO3,
128 AV_CODEC_ID_VP3,
129 AV_CODEC_ID_THEORA,
130 AV_CODEC_ID_ASV1,
131 AV_CODEC_ID_ASV2,
132 AV_CODEC_ID_FFV1,
133 AV_CODEC_ID_4XM,
134 AV_CODEC_ID_VCR1,
135 AV_CODEC_ID_CLJR,
136 AV_CODEC_ID_MDEC,
137 AV_CODEC_ID_ROQ,
138 AV_CODEC_ID_INTERPLAY_VIDEO,
139 AV_CODEC_ID_XAN_WC3,
140 AV_CODEC_ID_XAN_WC4,
141 AV_CODEC_ID_RPZA,
142 AV_CODEC_ID_CINEPAK,
143 AV_CODEC_ID_WS_VQA,
144 AV_CODEC_ID_MSRLE,
145 AV_CODEC_ID_MSVIDEO1,
146 AV_CODEC_ID_IDCIN,
147 AV_CODEC_ID_8BPS,
148 AV_CODEC_ID_SMC,
149 AV_CODEC_ID_FLIC,
150 AV_CODEC_ID_TRUEMOTION1,
151 AV_CODEC_ID_VMDVIDEO,
152 AV_CODEC_ID_MSZH,
153 AV_CODEC_ID_ZLIB,
154 AV_CODEC_ID_QTRLE,
155 AV_CODEC_ID_SNOW,
156 AV_CODEC_ID_TSCC,
157 AV_CODEC_ID_ULTI,
158 AV_CODEC_ID_QDRAW,
159 AV_CODEC_ID_VIXL,
160 AV_CODEC_ID_QPEG,
161 AV_CODEC_ID_PNG,
162 AV_CODEC_ID_PPM,
163 AV_CODEC_ID_PBM,
164 AV_CODEC_ID_PGM,
165 AV_CODEC_ID_PGMYUV,
166 AV_CODEC_ID_PAM,
167 AV_CODEC_ID_FFVHUFF,
168 AV_CODEC_ID_RV30,
169 AV_CODEC_ID_RV40,
170 AV_CODEC_ID_VC1,
171 AV_CODEC_ID_WMV3,
172 AV_CODEC_ID_LOCO,
173 AV_CODEC_ID_WNV1,
174 AV_CODEC_ID_AASC,
175 AV_CODEC_ID_INDEO2,
176 AV_CODEC_ID_FRAPS,
177 AV_CODEC_ID_TRUEMOTION2,
178 AV_CODEC_ID_BMP,
179 AV_CODEC_ID_CSCD,
180 AV_CODEC_ID_MMVIDEO,
181 AV_CODEC_ID_ZMBV,
182 AV_CODEC_ID_AVS,
183 AV_CODEC_ID_SMACKVIDEO,
184 AV_CODEC_ID_NUV,
185 AV_CODEC_ID_KMVC,
186 AV_CODEC_ID_FLASHSV,
187 AV_CODEC_ID_CAVS,
188 AV_CODEC_ID_JPEG2000,
189 AV_CODEC_ID_VMNC,
190 AV_CODEC_ID_VP5,
191 AV_CODEC_ID_VP6,
192 AV_CODEC_ID_VP6F,
193 AV_CODEC_ID_TARGA,
194 AV_CODEC_ID_DSICINVIDEO,
195 AV_CODEC_ID_TIERTEXSEQVIDEO,
196 AV_CODEC_ID_TIFF,
197 AV_CODEC_ID_GIF,
198 AV_CODEC_ID_DXA,
199 AV_CODEC_ID_DNXHD,
200 AV_CODEC_ID_THP,
201 AV_CODEC_ID_SGI,
202 AV_CODEC_ID_C93,
203 AV_CODEC_ID_BETHSOFTVID,
204 AV_CODEC_ID_PTX,
205 AV_CODEC_ID_TXD,
206 AV_CODEC_ID_VP6A,
207 AV_CODEC_ID_AMV,
208 AV_CODEC_ID_VB,
209 AV_CODEC_ID_PCX,
210 AV_CODEC_ID_SUNRAST,
211 AV_CODEC_ID_INDEO4,
212 AV_CODEC_ID_INDEO5,
213 AV_CODEC_ID_MIMIC,
214 AV_CODEC_ID_RL2,
215 AV_CODEC_ID_ESCAPE124,
216 AV_CODEC_ID_DIRAC,
217 AV_CODEC_ID_BFI,
218 AV_CODEC_ID_CMV,
219 AV_CODEC_ID_MOTIONPIXELS,
220 AV_CODEC_ID_TGV,
221 AV_CODEC_ID_TGQ,
222 AV_CODEC_ID_TQI,
223 AV_CODEC_ID_AURA,
224 AV_CODEC_ID_AURA2,
225 AV_CODEC_ID_V210X,
226 AV_CODEC_ID_TMV,
227 AV_CODEC_ID_V210,
228 AV_CODEC_ID_DPX,
229 AV_CODEC_ID_MAD,
230 AV_CODEC_ID_FRWU,
231 AV_CODEC_ID_FLASHSV2,
232 AV_CODEC_ID_CDGRAPHICS,
233 AV_CODEC_ID_R210,
234 AV_CODEC_ID_ANM,
235 AV_CODEC_ID_BINKVIDEO,
236 AV_CODEC_ID_IFF_ILBM,
237 AV_CODEC_ID_IFF_BYTERUN1,
238 AV_CODEC_ID_KGV1,
239 AV_CODEC_ID_YOP,
240 AV_CODEC_ID_VP8,
241 AV_CODEC_ID_PICTOR,
242 AV_CODEC_ID_ANSI,
243 AV_CODEC_ID_A64_MULTI,
244 AV_CODEC_ID_A64_MULTI5,
245 AV_CODEC_ID_R10K,
246 AV_CODEC_ID_MXPEG,
247 AV_CODEC_ID_LAGARITH,
248 AV_CODEC_ID_PRORES,
249 AV_CODEC_ID_JV,
250 AV_CODEC_ID_DFA,
251 AV_CODEC_ID_WMV3IMAGE,
252 AV_CODEC_ID_VC1IMAGE,
253 AV_CODEC_ID_UTVIDEO,
254 AV_CODEC_ID_BMV_VIDEO,
255 AV_CODEC_ID_VBLE,
256 AV_CODEC_ID_DXTORY,
257 AV_CODEC_ID_V410,
258 AV_CODEC_ID_XWD,
259 AV_CODEC_ID_CDXL,
260 AV_CODEC_ID_XBM,
261 AV_CODEC_ID_ZEROCODEC,
262 AV_CODEC_ID_MSS1,
263 AV_CODEC_ID_MSA1,
264 AV_CODEC_ID_TSCC2,
265 AV_CODEC_ID_MTS2,
266 AV_CODEC_ID_CLLC,
ee769c6a 267 AV_CODEC_ID_MSS2,
40c5ee99 268
f5bccd85 269 /* various PCM "codecs" */
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270 AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
271 AV_CODEC_ID_PCM_S16LE = 0x10000,
272 AV_CODEC_ID_PCM_S16BE,
273 AV_CODEC_ID_PCM_U16LE,
274 AV_CODEC_ID_PCM_U16BE,
275 AV_CODEC_ID_PCM_S8,
276 AV_CODEC_ID_PCM_U8,
277 AV_CODEC_ID_PCM_MULAW,
278 AV_CODEC_ID_PCM_ALAW,
279 AV_CODEC_ID_PCM_S32LE,
280 AV_CODEC_ID_PCM_S32BE,
281 AV_CODEC_ID_PCM_U32LE,
282 AV_CODEC_ID_PCM_U32BE,
283 AV_CODEC_ID_PCM_S24LE,
284 AV_CODEC_ID_PCM_S24BE,
285 AV_CODEC_ID_PCM_U24LE,
286 AV_CODEC_ID_PCM_U24BE,
287 AV_CODEC_ID_PCM_S24DAUD,
288 AV_CODEC_ID_PCM_ZORK,
289 AV_CODEC_ID_PCM_S16LE_PLANAR,
290 AV_CODEC_ID_PCM_DVD,
291 AV_CODEC_ID_PCM_F32BE,
292 AV_CODEC_ID_PCM_F32LE,
293 AV_CODEC_ID_PCM_F64BE,
294 AV_CODEC_ID_PCM_F64LE,
295 AV_CODEC_ID_PCM_BLURAY,
296 AV_CODEC_ID_PCM_LXF,
297 AV_CODEC_ID_S302M,
298 AV_CODEC_ID_PCM_S8_PLANAR,
0147f198 299
f5bccd85 300 /* various ADPCM codecs */
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301 AV_CODEC_ID_ADPCM_IMA_QT = 0x11000,
302 AV_CODEC_ID_ADPCM_IMA_WAV,
303 AV_CODEC_ID_ADPCM_IMA_DK3,
304 AV_CODEC_ID_ADPCM_IMA_DK4,
305 AV_CODEC_ID_ADPCM_IMA_WS,
306 AV_CODEC_ID_ADPCM_IMA_SMJPEG,
307 AV_CODEC_ID_ADPCM_MS,
308 AV_CODEC_ID_ADPCM_4XM,
309 AV_CODEC_ID_ADPCM_XA,
310 AV_CODEC_ID_ADPCM_ADX,
311 AV_CODEC_ID_ADPCM_EA,
312 AV_CODEC_ID_ADPCM_G726,
313 AV_CODEC_ID_ADPCM_CT,
314 AV_CODEC_ID_ADPCM_SWF,
315 AV_CODEC_ID_ADPCM_YAMAHA,
316 AV_CODEC_ID_ADPCM_SBPRO_4,
317 AV_CODEC_ID_ADPCM_SBPRO_3,
318 AV_CODEC_ID_ADPCM_SBPRO_2,
319 AV_CODEC_ID_ADPCM_THP,
320 AV_CODEC_ID_ADPCM_IMA_AMV,
321 AV_CODEC_ID_ADPCM_EA_R1,
322 AV_CODEC_ID_ADPCM_EA_R3,
323 AV_CODEC_ID_ADPCM_EA_R2,
324 AV_CODEC_ID_ADPCM_IMA_EA_SEAD,
325 AV_CODEC_ID_ADPCM_IMA_EA_EACS,
326 AV_CODEC_ID_ADPCM_EA_XAS,
327 AV_CODEC_ID_ADPCM_EA_MAXIS_XA,
328 AV_CODEC_ID_ADPCM_IMA_ISS,
329 AV_CODEC_ID_ADPCM_G722,
330 AV_CODEC_ID_ADPCM_IMA_APC,
891f64b3 331
17179d2d 332 /* AMR */
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333 AV_CODEC_ID_AMR_NB = 0x12000,
334 AV_CODEC_ID_AMR_WB,
d663a1fd 335
b8414bbd 336 /* RealAudio codecs*/
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337 AV_CODEC_ID_RA_144 = 0x13000,
338 AV_CODEC_ID_RA_288,
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339
340 /* various DPCM codecs */
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341 AV_CODEC_ID_ROQ_DPCM = 0x14000,
342 AV_CODEC_ID_INTERPLAY_DPCM,
343 AV_CODEC_ID_XAN_DPCM,
344 AV_CODEC_ID_SOL_DPCM,
115329f1 345
ba0dabbf 346 /* audio codecs */
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347 AV_CODEC_ID_MP2 = 0x15000,
348 AV_CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
349 AV_CODEC_ID_AAC,
350 AV_CODEC_ID_AC3,
351 AV_CODEC_ID_DTS,
352 AV_CODEC_ID_VORBIS,
353 AV_CODEC_ID_DVAUDIO,
354 AV_CODEC_ID_WMAV1,
355 AV_CODEC_ID_WMAV2,
356 AV_CODEC_ID_MACE3,
357 AV_CODEC_ID_MACE6,
358 AV_CODEC_ID_VMDAUDIO,
359 AV_CODEC_ID_FLAC,
360 AV_CODEC_ID_MP3ADU,
361 AV_CODEC_ID_MP3ON4,
362 AV_CODEC_ID_SHORTEN,
363 AV_CODEC_ID_ALAC,
364 AV_CODEC_ID_WESTWOOD_SND1,
365 AV_CODEC_ID_GSM, ///< as in Berlin toast format
366 AV_CODEC_ID_QDM2,
367 AV_CODEC_ID_COOK,
368 AV_CODEC_ID_TRUESPEECH,
369 AV_CODEC_ID_TTA,
370 AV_CODEC_ID_SMACKAUDIO,
371 AV_CODEC_ID_QCELP,
372 AV_CODEC_ID_WAVPACK,
373 AV_CODEC_ID_DSICINAUDIO,
374 AV_CODEC_ID_IMC,
375 AV_CODEC_ID_MUSEPACK7,
376 AV_CODEC_ID_MLP,
377 AV_CODEC_ID_GSM_MS, /* as found in WAV */
378 AV_CODEC_ID_ATRAC3,
379 AV_CODEC_ID_VOXWARE,
380 AV_CODEC_ID_APE,
381 AV_CODEC_ID_NELLYMOSER,
382 AV_CODEC_ID_MUSEPACK8,
383 AV_CODEC_ID_SPEEX,
384 AV_CODEC_ID_WMAVOICE,
385 AV_CODEC_ID_WMAPRO,
386 AV_CODEC_ID_WMALOSSLESS,
387 AV_CODEC_ID_ATRAC3P,
388 AV_CODEC_ID_EAC3,
389 AV_CODEC_ID_SIPR,
390 AV_CODEC_ID_MP1,
391 AV_CODEC_ID_TWINVQ,
392 AV_CODEC_ID_TRUEHD,
393 AV_CODEC_ID_MP4ALS,
394 AV_CODEC_ID_ATRAC1,
395 AV_CODEC_ID_BINKAUDIO_RDFT,
396 AV_CODEC_ID_BINKAUDIO_DCT,
397 AV_CODEC_ID_AAC_LATM,
398 AV_CODEC_ID_QDMC,
399 AV_CODEC_ID_CELT,
400 AV_CODEC_ID_G723_1,
401 AV_CODEC_ID_G729,
402 AV_CODEC_ID_8SVX_EXP,
403 AV_CODEC_ID_8SVX_FIB,
404 AV_CODEC_ID_BMV_AUDIO,
405 AV_CODEC_ID_RALF,
406 AV_CODEC_ID_IAC,
407 AV_CODEC_ID_ILBC,
2a3d82ab 408 AV_CODEC_ID_OPUS,
115329f1 409
240c1657 410 /* subtitle codecs */
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411 AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
412 AV_CODEC_ID_DVD_SUBTITLE = 0x17000,
413 AV_CODEC_ID_DVB_SUBTITLE,
414 AV_CODEC_ID_TEXT, ///< raw UTF-8 text
415 AV_CODEC_ID_XSUB,
416 AV_CODEC_ID_SSA,
417 AV_CODEC_ID_MOV_TEXT,
418 AV_CODEC_ID_HDMV_PGS_SUBTITLE,
419 AV_CODEC_ID_DVB_TELETEXT,
420 AV_CODEC_ID_SRT,
115329f1 421
7ce68923 422 /* other specific kind of codecs (generally used for attachments) */
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423 AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
424 AV_CODEC_ID_TTF = 0x18000,
f8d7c9d3 425
104e10fb 426 AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
0bef08e5 427
104e10fb 428 AV_CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS
f5bccd85 429 * stream (only used by libavformat) */
104e10fb 430 AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
77b5c82b 431 * stream (only used by libavformat) */
104e10fb 432 AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
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433
434#if FF_API_CODEC_ID
435#include "old_codec_ids.h"
436#endif
de6d9b64 437};
dcedf586 438
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439#if FF_API_CODEC_ID
440#define CodecID AVCodecID
441#endif
442
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443/**
444 * This struct describes the properties of a single codec described by an
445 * AVCodecID.
446 * @see avcodec_get_descriptor()
447 */
448typedef struct AVCodecDescriptor {
449 enum AVCodecID id;
450 enum AVMediaType type;
451 /**
452 * Name of the codec described by this descriptor. It is non-empty and
453 * unique for each codec descriptor. It should contain alphanumeric
454 * characters and '_' only.
455 */
456 const char *name;
457 /**
458 * A more descriptive name for this codec. May be NULL.
459 */
460 const char *long_name;
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461 /**
462 * Codec properties, a combination of AV_CODEC_PROP_* flags.
463 */
464 int props;
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465} AVCodecDescriptor;
466
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467/**
468 * Codec uses only intra compression.
469 * Video codecs only.
470 */
471#define AV_CODEC_PROP_INTRA_ONLY (1 << 0)
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472/**
473 * Codec supports lossy compression. Audio and video codecs only.
474 * @note a codec may support both lossy and lossless
475 * compression modes
476 */
477#define AV_CODEC_PROP_LOSSY (1 << 1)
478/**
479 * Codec supports lossless compression. Audio and video codecs only.
480 */
481#define AV_CODEC_PROP_LOSSLESS (1 << 2)
51efed15 482
0eea2129 483#if FF_API_OLD_DECODE_AUDIO
de6d9b64 484/* in bytes */
8170e5fb 485#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
0eea2129 486#endif
de6d9b64 487
d7425f59 488/**
c8ef8464 489 * @ingroup lavc_decoding
cf713bb8 490 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
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491 * This is mainly needed because some optimized bitstream readers read
492 * 32 or 64 bit at once and could read over the end.<br>
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493 * Note: If the first 23 bits of the additional bytes are not 0, then damaged
494 * MPEG bitstreams could cause overread and segfault.
d7425f59 495 */
171b7b91 496#define FF_INPUT_BUFFER_PADDING_SIZE 8
d7425f59 497
0ecca7a4 498/**
f038515f 499 * @ingroup lavc_encoding
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500 * minimum encoding buffer size
501 * Used to avoid some checks during header writing.
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502 */
503#define FF_MIN_BUFFER_SIZE 16384
504
47146dfb 505
0e373b95 506/**
f038515f 507 * @ingroup lavc_encoding
bafc102b 508 * motion estimation type.
0e373b95 509 */
e4986da9 510enum Motion_Est_ID {
9b4dd1b8 511 ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
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512 ME_FULL,
513 ME_LOG,
514 ME_PHODS,
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515 ME_EPZS, ///< enhanced predictive zonal search
516 ME_X1, ///< reserved for experiments
517 ME_HEX, ///< hexagon based search
518 ME_UMH, ///< uneven multi-hexagon search
519 ME_ITER, ///< iterative search
359bbdab 520 ME_TESA, ///< transformed exhaustive search algorithm
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521};
522
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523/**
524 * @ingroup lavc_decoding
525 */
8c3eba7c 526enum AVDiscard{
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527 /* We leave some space between them for extensions (drop some
528 * keyframes for intra-only or drop just some bidir frames). */
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529 AVDISCARD_NONE =-16, ///< discard nothing
530 AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi
531 AVDISCARD_NONREF = 8, ///< discard all non reference
532 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
533 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
534 AVDISCARD_ALL = 48, ///< discard all
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535};
536
4ee6a5c1 537enum AVColorPrimaries{
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538 AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
539 AVCOL_PRI_UNSPECIFIED = 2,
540 AVCOL_PRI_BT470M = 4,
541 AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
542 AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
543 AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
544 AVCOL_PRI_FILM = 8,
545 AVCOL_PRI_NB , ///< Not part of ABI
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546};
547
548enum AVColorTransferCharacteristic{
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549 AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
550 AVCOL_TRC_UNSPECIFIED = 2,
551 AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
552 AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
ca93f0fa 553 AVCOL_TRC_SMPTE240M = 7,
ccc2dfbc 554 AVCOL_TRC_NB , ///< Not part of ABI
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555};
556
557enum AVColorSpace{
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558 AVCOL_SPC_RGB = 0,
559 AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
560 AVCOL_SPC_UNSPECIFIED = 2,
561 AVCOL_SPC_FCC = 4,
562 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
563 AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
564 AVCOL_SPC_SMPTE240M = 7,
85395ba7 565 AVCOL_SPC_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
ccc2dfbc 566 AVCOL_SPC_NB , ///< Not part of ABI
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567};
568
569enum AVColorRange{
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570 AVCOL_RANGE_UNSPECIFIED = 0,
571 AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
572 AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
573 AVCOL_RANGE_NB , ///< Not part of ABI
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574};
575
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576/**
577 * X X 3 4 X X are luma samples,
578 * 1 2 1-6 are possible chroma positions
579 * X X 5 6 X 0 is undefined/unknown position
580 */
581enum AVChromaLocation{
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582 AVCHROMA_LOC_UNSPECIFIED = 0,
583 AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default
584 AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263
585 AVCHROMA_LOC_TOPLEFT = 3, ///< DV
586 AVCHROMA_LOC_TOP = 4,
587 AVCHROMA_LOC_BOTTOMLEFT = 5,
588 AVCHROMA_LOC_BOTTOM = 6,
589 AVCHROMA_LOC_NB , ///< Not part of ABI
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590};
591
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592enum AVAudioServiceType {
593 AV_AUDIO_SERVICE_TYPE_MAIN = 0,
594 AV_AUDIO_SERVICE_TYPE_EFFECTS = 1,
595 AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2,
596 AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3,
597 AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4,
598 AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5,
599 AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6,
600 AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7,
601 AV_AUDIO_SERVICE_TYPE_KARAOKE = 8,
602 AV_AUDIO_SERVICE_TYPE_NB , ///< Not part of ABI
603};
604
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605/**
606 * @ingroup lavc_encoding
607 */
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608typedef struct RcOverride{
609 int start_frame;
610 int end_frame;
f5bccd85 611 int qscale; // If this is 0 then quality_factor will be used instead.
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612 float quality_factor;
613} RcOverride;
614
b0ec9efd 615#define FF_MAX_B_FRAMES 16
9dbcbd92 616
a949d72e 617/* encoding support
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618 These flags can be passed in AVCodecContext.flags before initialization.
619 Note: Not everything is supported yet.
a949d72e 620*/
de6d9b64 621
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622#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale.
623#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263.
624#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC.
625#define CODEC_FLAG_GMC 0x0020 ///< Use GMC.
626#define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>.
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627/**
628 * The parent program guarantees that the input for B-frames containing
f5bccd85 629 * streams is not written to for at least s->max_b_frames+1 frames, if
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630 * this is not set the input will be copied.
631 */
8b4c7dbc 632#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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633#define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode.
634#define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode.
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635#define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale.
636#define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges.
637#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding.
638#define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random
639 location instead of only at frame boundaries. */
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640#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization.
641#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT.
642#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay.
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643#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe.
644#define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT).
21e59552 645/* Fx : Flag for h263+ extra options */
f5bccd85 646#define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction
332f9ac4 647#define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
bb198e19 648#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
f3eec1cf 649#define CODEC_FLAG_CLOSED_GOP 0x80000000
f5bccd85 650#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
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651#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
652#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
ed019b8e 653#if FF_API_MPV_GLOBAL_OPTS
af3d804f 654#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
ff71a383 655#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.
a249f0cc 656#define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size.
f013cb81 657#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping
ed019b8e 658#endif
f013cb81 659#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
6fc5b059 660
21e59552 661/* Unsupported options :
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DB
662 * Syntax Arithmetic coding (SAC)
663 * Reference Picture Selection
eafcac6a 664 * Independent Segment Decoding */
21e59552 665/* /Fx */
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666/* codec capabilities */
667
f5bccd85 668#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback.
6814a25c 669/**
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670 * Codec uses get_buffer() for allocating buffers and supports custom allocators.
671 * If not set, it might not use get_buffer() at all or use operations that
672 * assume the buffer was allocated by avcodec_default_get_buffer.
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673 */
674#define CODEC_CAP_DR1 0x0002
d7425f59 675#define CODEC_CAP_TRUNCATED 0x0008
f5bccd85 676/* Codec can export data for HW decoding (XvMC). */
5e5c247a 677#define CODEC_CAP_HWACCEL 0x0010
115329f1 678/**
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679 * Encoder or decoder requires flushing with NULL input at the end in order to
680 * give the complete and correct output.
681 *
682 * NOTE: If this flag is not set, the codec is guaranteed to never be fed with
683 * with NULL data. The user can still send NULL data to the public encode
684 * or decode function, but libavcodec will not pass it along to the codec
685 * unless this flag is set.
686 *
687 * Decoders:
688 * The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL,
ffeeae92 689 * avpkt->size=0 at the end to get the delayed data until the decoder no longer
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690 * returns frames.
691 *
692 * Encoders:
693 * The encoder needs to be fed with NULL data at the end of encoding until the
694 * encoder no longer returns data.
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695 *
696 * NOTE: For encoders implementing the AVCodec.encode2() function, setting this
697 * flag also means that the encoder must set the pts and duration for
698 * each output packet. If this flag is not set, the pts and duration will
699 * be determined by libavcodec from the input frame.
934982c4 700 */
6f824977 701#define CODEC_CAP_DELAY 0x0020
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702/**
703 * Codec can be fed a final frame with a smaller size.
704 * This can be used to prevent truncation of the last audio samples.
705 */
706#define CODEC_CAP_SMALL_LAST_FRAME 0x0040
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707/**
708 * Codec can export data for HW decoding (VDPAU).
709 */
710#define CODEC_CAP_HWACCEL_VDPAU 0x0080
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711/**
712 * Codec can output multiple frames per AVPacket
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713 * Normally demuxers return one frame at a time, demuxers which do not do
714 * are connected to a parser to split what they return into proper frames.
715 * This flag is reserved to the very rare category of codecs which have a
716 * bitstream that cannot be split into frames without timeconsuming
717 * operations like full decoding. Demuxers carring such bitstreams thus
718 * may return multiple frames in a packet. This has many disadvantages like
719 * prohibiting stream copy in many cases thus it should only be considered
720 * as a last resort.
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721 */
722#define CODEC_CAP_SUBFRAMES 0x0100
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723/**
724 * Codec is experimental and is thus avoided in favor of non experimental
725 * encoders
726 */
727#define CODEC_CAP_EXPERIMENTAL 0x0200
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728/**
729 * Codec should fill in channel configuration and samplerate instead of container
730 */
731#define CODEC_CAP_CHANNEL_CONF 0x0400
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732/**
733 * Codec is able to deal with negative linesizes
734 */
735#define CODEC_CAP_NEG_LINESIZES 0x0800
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AS
736/**
737 * Codec supports frame-level multithreading.
738 */
739#define CODEC_CAP_FRAME_THREADS 0x1000
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740/**
741 * Codec supports slice-based (or partition-based) multithreading.
742 */
743#define CODEC_CAP_SLICE_THREADS 0x2000
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744/**
745 * Codec supports changed parameters at any point.
746 */
747#define CODEC_CAP_PARAM_CHANGE 0x4000
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748/**
749 * Codec supports avctx->thread_count == 0 (auto).
750 */
751#define CODEC_CAP_AUTO_THREADS 0x8000
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752/**
753 * Audio encoder supports receiving a different number of samples in each call.
754 */
755#define CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000
bf89e6b1 756
f5bccd85 757//The following defines may change, don't expect compatibility if you use them.
8d7ec294 758#define MB_TYPE_INTRA4x4 0x0001
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759#define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific
760#define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific
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761#define MB_TYPE_16x16 0x0008
762#define MB_TYPE_16x8 0x0010
763#define MB_TYPE_8x16 0x0020
764#define MB_TYPE_8x8 0x0040
765#define MB_TYPE_INTERLACED 0x0080
273b0cd3 766#define MB_TYPE_DIRECT2 0x0100 //FIXME
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767#define MB_TYPE_ACPRED 0x0200
768#define MB_TYPE_GMC 0x0400
769#define MB_TYPE_SKIP 0x0800
770#define MB_TYPE_P0L0 0x1000
771#define MB_TYPE_P1L0 0x2000
772#define MB_TYPE_P0L1 0x4000
773#define MB_TYPE_P1L1 0x8000
774#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
775#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
776#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
777#define MB_TYPE_QUANT 0x00010000
778#define MB_TYPE_CBP 0x00020000
779//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
780
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781/**
782 * Pan Scan area.
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783 * This specifies the area which should be displayed.
784 * Note there may be multiple such areas for one frame.
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785 */
786typedef struct AVPanScan{
787 /**
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788 * id
789 * - encoding: Set by user.
790 * - decoding: Set by libavcodec.
fa384dcc
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791 */
792 int id;
793
794 /**
795 * width and height in 1/16 pel
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796 * - encoding: Set by user.
797 * - decoding: Set by libavcodec.
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798 */
799 int width;
800 int height;
801
802 /**
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803 * position of the top left corner in 1/16 pel for up to 3 fields/frames
804 * - encoding: Set by user.
805 * - decoding: Set by libavcodec.
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806 */
807 int16_t position[3][2];
808}AVPanScan;
809
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810#define FF_QSCALE_TYPE_MPEG1 0
811#define FF_QSCALE_TYPE_MPEG2 1
812#define FF_QSCALE_TYPE_H264 2
800274f8 813#define FF_QSCALE_TYPE_VP56 3
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814
815#define FF_BUFFER_TYPE_INTERNAL 1
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816#define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user)
817#define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared.
818#define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything.
4e00e76b 819
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820#define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore).
821#define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer.
822#define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content.
823#define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update).
074c4ca7 824
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825/**
826 * @defgroup lavc_packet AVPacket
827 *
828 * Types and functions for working with AVPacket.
829 * @{
830 */
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831enum AVPacketSideDataType {
832 AV_PKT_DATA_PALETTE,
195c123c 833 AV_PKT_DATA_NEW_EXTRADATA,
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834
835 /**
836 * An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
199ada49 837 * @code
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838 * u32le param_flags
839 * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT)
840 * s32le channel_count
841 * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT)
842 * u64le channel_layout
843 * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE)
844 * s32le sample_rate
845 * if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS)
846 * s32le width
847 * s32le height
199ada49 848 * @endcode
30f3f625 849 */
fe75dc85 850 AV_PKT_DATA_PARAM_CHANGE,
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851
852 /**
853 * An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of
854 * structures with info about macroblocks relevant to splitting the
855 * packet into smaller packets on macroblock edges (e.g. as for RFC 2190).
856 * That is, it does not necessarily contain info about all macroblocks,
857 * as long as the distance between macroblocks in the info is smaller
858 * than the target payload size.
859 * Each MB info structure is 12 bytes, and is laid out as follows:
199ada49 860 * @code
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861 * u32le bit offset from the start of the packet
862 * u8 current quantizer at the start of the macroblock
863 * u8 GOB number
864 * u16le macroblock address within the GOB
865 * u8 horizontal MV predictor
866 * u8 vertical MV predictor
867 * u8 horizontal MV predictor for block number 3
868 * u8 vertical MV predictor for block number 3
199ada49 869 * @endcode
30f3f625 870 */
bdc1220e 871 AV_PKT_DATA_H263_MB_INFO,
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872};
873
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874typedef struct AVPacket {
875 /**
7b356d39
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876 * Presentation timestamp in AVStream->time_base units; the time at which
877 * the decompressed packet will be presented to the user.
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878 * Can be AV_NOPTS_VALUE if it is not stored in the file.
879 * pts MUST be larger or equal to dts as presentation cannot happen before
880 * decompression, unless one wants to view hex dumps. Some formats misuse
881 * the terms dts and pts/cts to mean something different. Such timestamps
882 * must be converted to true pts/dts before they are stored in AVPacket.
883 */
884 int64_t pts;
885 /**
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886 * Decompression timestamp in AVStream->time_base units; the time at which
887 * the packet is decompressed.
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888 * Can be AV_NOPTS_VALUE if it is not stored in the file.
889 */
890 int64_t dts;
891 uint8_t *data;
892 int size;
893 int stream_index;
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894 /**
895 * A combination of AV_PKT_FLAG values
896 */
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897 int flags;
898 /**
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899 * Additional packet data that can be provided by the container.
900 * Packet can contain several types of side information.
901 */
902 struct {
903 uint8_t *data;
904 int size;
905 enum AVPacketSideDataType type;
906 } *side_data;
907 int side_data_elems;
908
909 /**
7b356d39 910 * Duration of this packet in AVStream->time_base units, 0 if unknown.
18c915ee
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911 * Equals next_pts - this_pts in presentation order.
912 */
913 int duration;
914 void (*destruct)(struct AVPacket *);
915 void *priv;
916 int64_t pos; ///< byte position in stream, -1 if unknown
917
918 /**
7b356d39 919 * Time difference in AVStream->time_base units from the pts of this
18c915ee
TB
920 * packet to the point at which the output from the decoder has converged
921 * independent from the availability of previous frames. That is, the
922 * frames are virtually identical no matter if decoding started from
923 * the very first frame or from this keyframe.
924 * Is AV_NOPTS_VALUE if unknown.
925 * This field is not the display duration of the current packet.
8ee82f40
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926 * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
927 * set.
18c915ee
TB
928 *
929 * The purpose of this field is to allow seeking in streams that have no
930 * keyframes in the conventional sense. It corresponds to the
931 * recovery point SEI in H.264 and match_time_delta in NUT. It is also
932 * essential for some types of subtitle streams to ensure that all
933 * subtitles are correctly displayed after seeking.
934 */
935 int64_t convergence_duration;
936} AVPacket;
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937#define AV_PKT_FLAG_KEY 0x0001 ///< The packet contains a keyframe
938#define AV_PKT_FLAG_CORRUPT 0x0002 ///< The packet content is corrupted
18c915ee 939
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940enum AVSideDataParamChangeFlags {
941 AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = 0x0001,
942 AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = 0x0002,
943 AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE = 0x0004,
944 AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS = 0x0008,
945};
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946/**
947 * @}
948 */
fe75dc85
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949
950/**
0da71265 951 * Audio Video Frame.
657ccb5a
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952 * New fields can be added to the end of AVFRAME with minor version
953 * bumps. Removal, reordering and changes to existing fields require
954 * a major version bump.
8bfb108b 955 * sizeof(AVFrame) must not be used outside libav*.
0da71265 956 */
492cd3a9 957typedef struct AVFrame {
560f773c 958#define AV_NUM_DATA_POINTERS 8
657ccb5a 959 /**
0eea2129 960 * pointer to the picture/channel planes.
657ccb5a 961 * This might be different from the first allocated byte
0eea2129
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962 * - encoding: Set by user
963 * - decoding: set by AVCodecContext.get_buffer()
657ccb5a 964 */
560f773c 965 uint8_t *data[AV_NUM_DATA_POINTERS];
0eea2129
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966
967 /**
968 * Size, in bytes, of the data for each picture/channel plane.
969 *
970 * For audio, only linesize[0] may be set. For planar audio, each channel
971 * plane must be the same size.
972 *
9814974d 973 * - encoding: Set by user
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974 * - decoding: set by AVCodecContext.get_buffer()
975 */
560f773c 976 int linesize[AV_NUM_DATA_POINTERS];
0eea2129 977
657ccb5a 978 /**
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979 * pointers to the data planes/channels.
980 *
981 * For video, this should simply point to data[].
982 *
983 * For planar audio, each channel has a separate data pointer, and
984 * linesize[0] contains the size of each channel buffer.
985 * For packed audio, there is just one data pointer, and linesize[0]
986 * contains the total size of the buffer for all channels.
987 *
988 * Note: Both data and extended_data will always be set by get_buffer(),
989 * but for planar audio with more channels that can fit in data,
990 * extended_data must be used by the decoder in order to access all
991 * channels.
992 *
993 * encoding: unused
994 * decoding: set by AVCodecContext.get_buffer()
657ccb5a 995 */
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996 uint8_t **extended_data;
997
998 /**
999 * width and height of the video frame
1000 * - encoding: unused
1001 * - decoding: Read by user.
1002 */
1003 int width, height;
1004
1005 /**
1006 * number of audio samples (per channel) described by this frame
1007 * - encoding: Set by user
1008 * - decoding: Set by libavcodec
1009 */
1010 int nb_samples;
1011
1012 /**
1013 * format of the frame, -1 if unknown or unset
1014 * Values correspond to enum PixelFormat for video frames,
1015 * enum AVSampleFormat for audio)
1016 * - encoding: unused
1017 * - decoding: Read by user.
1018 */
1019 int format;
1020
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DB
1021 /**
1022 * 1 -> keyframe, 0-> not
1023 * - encoding: Set by libavcodec.
1024 * - decoding: Set by libavcodec.
1025 */
1026 int key_frame;
1027
1028 /**
1029 * Picture type of the frame, see ?_TYPE below.
1030 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
1031 * - decoding: Set by libavcodec.
1032 */
1033 enum AVPictureType pict_type;
1034
1035 /**
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1036 * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
1037 * This isn't used by libavcodec unless the default get/release_buffer() is used.
1038 * - encoding:
1039 * - decoding:
1040 */
1041 uint8_t *base[AV_NUM_DATA_POINTERS];
1042
1043 /**
40ca0e6a 1044 * sample aspect ratio for the video frame, 0/1 if unknown/unspecified
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1045 * - encoding: unused
1046 * - decoding: Read by user.
1047 */
1048 AVRational sample_aspect_ratio;
1049
1050 /**
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1051 * presentation timestamp in time_base units (time when frame should be shown to user)
1052 * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
1053 * - encoding: MUST be set by user.
1054 * - decoding: Set by libavcodec.
1055 */
1056 int64_t pts;
1057
1058 /**
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1059 * reordered pts from the last AVPacket that has been input into the decoder
1060 * - encoding: unused
1061 * - decoding: Read by user.
1062 */
1063 int64_t pkt_pts;
1064
1065 /**
1066 * dts from the last AVPacket that has been input into the decoder
1067 * - encoding: unused
1068 * - decoding: Read by user.
1069 */
1070 int64_t pkt_dts;
1071
1072 /**
657ccb5a
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1073 * picture number in bitstream order
1074 * - encoding: set by
1075 * - decoding: Set by libavcodec.
1076 */
1077 int coded_picture_number;
1078 /**
1079 * picture number in display order
1080 * - encoding: set by
1081 * - decoding: Set by libavcodec.
1082 */
1083 int display_picture_number;
1084
1085 /**
1086 * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
1087 * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
1088 * - decoding: Set by libavcodec.
1089 */
1090 int quality;
1091
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DB
1092 /**
1093 * is this picture used as reference
1094 * The values for this are the same as the MpegEncContext.picture_structure
1095 * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
1096 * Set to 4 for delayed, non-reference frames.
1097 * - encoding: unused
1098 * - decoding: Set by libavcodec. (before get_buffer() call)).
1099 */
1100 int reference;
1101
1102 /**
1103 * QP table
1104 * - encoding: unused
1105 * - decoding: Set by libavcodec.
1106 */
1107 int8_t *qscale_table;
1108 /**
1109 * QP store stride
1110 * - encoding: unused
1111 * - decoding: Set by libavcodec.
1112 */
1113 int qstride;
1114
1115 /**
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1116 *
1117 */
1118 int qscale_type;
1119
1120 /**
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DB
1121 * mbskip_table[mb]>=1 if MB didn't change
1122 * stride= mb_width = (width+15)>>4
1123 * - encoding: unused
1124 * - decoding: Set by libavcodec.
1125 */
1126 uint8_t *mbskip_table;
1127
1128 /**
1129 * motion vector table
1130 * @code
1131 * example:
1132 * int mv_sample_log2= 4 - motion_subsample_log2;
1133 * int mb_width= (width+15)>>4;
1134 * int mv_stride= (mb_width << mv_sample_log2) + 1;
1135 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
1136 * @endcode
1137 * - encoding: Set by user.
1138 * - decoding: Set by libavcodec.
1139 */
1140 int16_t (*motion_val[2])[2];
1141
1142 /**
1143 * macroblock type table
1144 * mb_type_base + mb_width + 2
1145 * - encoding: Set by user.
1146 * - decoding: Set by libavcodec.
1147 */
1148 uint32_t *mb_type;
1149
1150 /**
1d428004 1151 * DCT coefficients
657ccb5a
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1152 * - encoding: unused
1153 * - decoding: Set by libavcodec.
1154 */
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1155 short *dct_coeff;
1156
1157 /**
1158 * motion reference frame index
1159 * the order in which these are stored can depend on the codec.
1160 * - encoding: Set by user.
1161 * - decoding: Set by libavcodec.
1162 */
1163 int8_t *ref_index[2];
657ccb5a
DB
1164
1165 /**
1166 * for some private data of the user
1167 * - encoding: unused
1168 * - decoding: Set by user.
1169 */
1170 void *opaque;
1171
1172 /**
1173 * error
1174 * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
1175 * - decoding: unused
1176 */
560f773c 1177 uint64_t error[AV_NUM_DATA_POINTERS];
657ccb5a
DB
1178
1179 /**
1180 * type of the buffer (to keep track of who has to deallocate data[*])
1181 * - encoding: Set by the one who allocates it.
1182 * - decoding: Set by the one who allocates it.
1183 * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.
1184 */
1185 int type;
1186
1187 /**
1188 * When decoding, this signals how much the picture must be delayed.
1189 * extra_delay = repeat_pict / (2*fps)
1190 * - encoding: unused
1191 * - decoding: Set by libavcodec.
1192 */
1193 int repeat_pict;
1194
1195 /**
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1196 * The content of the picture is interlaced.
1197 * - encoding: Set by user.
1198 * - decoding: Set by libavcodec. (default 0)
1199 */
1200 int interlaced_frame;
1201
1202 /**
1203 * If the content is interlaced, is top field displayed first.
1204 * - encoding: Set by user.
1205 * - decoding: Set by libavcodec.
1206 */
1207 int top_field_first;
1208
1209 /**
657ccb5a
DB
1210 * Tell user application that palette has changed from previous frame.
1211 * - encoding: ??? (no palette-enabled encoder yet)
1212 * - decoding: Set by libavcodec. (default 0).
1213 */
1214 int palette_has_changed;
1215
1216 /**
1217 * codec suggestion on buffer type if != 0
1218 * - encoding: unused
1219 * - decoding: Set by libavcodec. (before get_buffer() call)).
1220 */
1221 int buffer_hints;
1222
1223 /**
1d428004 1224 * Pan scan.
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DB
1225 * - encoding: Set by user.
1226 * - decoding: Set by libavcodec.
1227 */
1d428004 1228 AVPanScan *pan_scan;
657ccb5a
DB
1229
1230 /**
1231 * reordered opaque 64bit (generally an integer or a double precision float
1232 * PTS but can be anything).
1233 * The user sets AVCodecContext.reordered_opaque to represent the input at
1234 * that time,
1235 * the decoder reorders values as needed and sets AVFrame.reordered_opaque
1236 * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
1237 * @deprecated in favor of pkt_pts
1238 * - encoding: unused
1239 * - decoding: Read by user.
1240 */
1241 int64_t reordered_opaque;
1242
1243 /**
1244 * hardware accelerator private data (Libav-allocated)
1245 * - encoding: unused
1246 * - decoding: Set by libavcodec
1247 */
1248 void *hwaccel_picture_private;
1249
1250 /**
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DB
1251 * the AVCodecContext which ff_thread_get_buffer() was last called on
1252 * - encoding: Set by libavcodec.
1253 * - decoding: Set by libavcodec.
1254 */
1255 struct AVCodecContext *owner;
1256
1257 /**
1258 * used by multithreading to store frame-specific info
1259 * - encoding: Set by libavcodec.
1260 * - decoding: Set by libavcodec.
1261 */
1262 void *thread_opaque;
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JR
1263
1264 /**
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1265 * log2 of the size of the block which a single vector in motion_val represents:
1266 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
8a4a5f6f 1267 * - encoding: unused
1d428004 1268 * - decoding: Set by libavcodec.
8a4a5f6f 1269 */
1d428004 1270 uint8_t motion_subsample_log2;
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1271
1272 /**
1273 * Sample rate of the audio data.
1274 *
1275 * - encoding: unused
1276 * - decoding: set by get_buffer()
1277 */
1278 int sample_rate;
1279
1280 /**
1281 * Channel layout of the audio data.
1282 *
1283 * - encoding: unused
1284 * - decoding: set by get_buffer()
1285 */
1286 uint64_t channel_layout;
492cd3a9 1287} AVFrame;
1e491e29 1288
f3a29b75
JR
1289struct AVCodecInternal;
1290
4bf3c8f2
AC
1291enum AVFieldOrder {
1292 AV_FIELD_UNKNOWN,
1293 AV_FIELD_PROGRESSIVE,
1294 AV_FIELD_TT, //< Top coded_first, top displayed first
1295 AV_FIELD_BB, //< Bottom coded first, bottom displayed first
1296 AV_FIELD_TB, //< Top coded first, bottom displayed first
1297 AV_FIELD_BT, //< Bottom coded first, top displayed first
1298};
1299
d33c949c 1300/**
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1301 * main external API structure.
1302 * New fields can be added to the end with minor version bumps.
8bfb108b 1303 * Removal, reordering and changes to existing fields require a major
252f17e2 1304 * version bump.
8bfb108b 1305 * sizeof(AVCodecContext) must not be used outside libav*.
d33c949c 1306 */
de6d9b64 1307typedef struct AVCodecContext {
b71901e6 1308 /**
f5bccd85 1309 * information on struct for av_log
488eec10 1310 * - set by avcodec_alloc_context3
bc874dae 1311 */
d42a814e 1312 const AVClass *av_class;
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1313 int log_level_offset;
1314
1315 enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
0a0f19b5 1316 const struct AVCodec *codec;
b1edfce0 1317 char codec_name[32];
36ef5369 1318 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
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1319
1320 /**
1321 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1322 * This is used to work around some encoder bugs.
1323 * A demuxer should set this to what is stored in the field used to identify the codec.
1324 * If there are multiple such fields in a container then the demuxer should choose the one
1325 * which maximizes the information about the used codec.
1326 * If the codec tag field in a container is larger than 32 bits then the demuxer should
1327 * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
1328 * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
1329 * first.
1330 * - encoding: Set by user, if not then the default based on codec_id will be used.
1331 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1332 */
1333 unsigned int codec_tag;
1334
1335 /**
1336 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1337 * This is used to work around some encoder bugs.
1338 * - encoding: unused
1339 * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
1340 */
1341 unsigned int stream_codec_tag;
1342
02beb982 1343#if FF_API_SUB_ID
b1edfce0 1344 /**
02beb982 1345 * @deprecated this field is unused
b1edfce0 1346 */
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1347 attribute_deprecated int sub_id;
1348#endif
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1349
1350 void *priv_data;
1351
1352 /**
1353 * Private context used for internal data.
1354 *
1355 * Unlike priv_data, this is not codec-specific. It is used in general
1356 * libavcodec functions.
1357 */
1358 struct AVCodecInternal *internal;
1359
1360 /**
1361 * Private data of the user, can be used to carry app specific stuff.
1362 * - encoding: Set by user.
1363 * - decoding: Set by user.
1364 */
1365 void *opaque;
1366
bc874dae 1367 /**
f5bccd85
DB
1368 * the average bitrate
1369 * - encoding: Set by user; unused for constant quantizer encoding.
1370 * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
b71901e6 1371 */
de6d9b64 1372 int bit_rate;
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MN
1373
1374 /**
64863965 1375 * number of bits the bitstream is allowed to diverge from the reference.
b71901e6 1376 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
f5bccd85 1377 * - encoding: Set by user; unused for constant quantizer encoding.
64863965 1378 * - decoding: unused
b71901e6 1379 */
115329f1 1380 int bit_rate_tolerance;
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MN
1381
1382 /**
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1383 * Global quality for codecs which cannot change it per frame.
1384 * This should be proportional to MPEG-1/2/4 qscale.
f5bccd85 1385 * - encoding: Set by user.
b1edfce0 1386 * - decoding: unused
b71901e6 1387 */
b1edfce0 1388 int global_quality;
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MN
1389
1390 /**
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1391 * - encoding: Set by user.
1392 * - decoding: unused
b71901e6 1393 */
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1394 int compression_level;
1395#define FF_COMPRESSION_DEFAULT -1
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MN
1396
1397 /**
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1398 * CODEC_FLAG_*.
1399 * - encoding: Set by user.
1400 * - decoding: Set by user.
b71901e6 1401 */
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1402 int flags;
1403
1404 /**
1405 * CODEC_FLAG2_*
1406 * - encoding: Set by user.
1407 * - decoding: Set by user.
1408 */
1409 int flags2;
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MN
1410
1411 /**
f5bccd85
DB
1412 * some codecs need / can use extradata like Huffman tables.
1413 * mjpeg: Huffman tables
b71901e6 1414 * rv10: additional flags
b704e742 1415 * mpeg4: global headers (they can be in the bitstream or here)
f5bccd85
DB
1416 * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
1417 * than extradata_size to avoid prolems if it is read with the bitstream reader.
1418 * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
1419 * - encoding: Set/allocated/freed by libavcodec.
1420 * - decoding: Set/allocated/freed by user.
b71901e6 1421 */
58f2a4b0 1422 uint8_t *extradata;
e84c31dc 1423 int extradata_size;
115329f1 1424
b71901e6 1425 /**
f5bccd85
DB
1426 * This is the fundamental unit of time (in seconds) in terms
1427 * of which frame timestamps are represented. For fixed-fps content,
5b28c8c3
MN
1428 * timebase should be 1/framerate and timestamp increments should be
1429 * identically 1.
f5bccd85
DB
1430 * - encoding: MUST be set by user.
1431 * - decoding: Set by libavcodec.
b71901e6 1432 */
c0df9d75 1433 AVRational time_base;
115329f1 1434
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1435 /**
1436 * For some codecs, the time base is closer to the field rate than the frame rate.
1437 * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
1438 * if no telecine is used ...
1439 *
1440 * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
1441 */
1442 int ticks_per_frame;
1443
1444 /**
1445 * Encoder delay.
1446 *
1447 * Video:
1448 * Number of frames the decoded output will be delayed relative to the
1449 * encoded input.
1450 *
1451 * Audio:
1452 * Number of "priming" samples added to the beginning of the stream
1453 * during encoding. The decoded output will be delayed by this many
1454 * samples relative to the input to the encoder. Note that this field is
1455 * purely informational and does not directly affect the pts output by
1456 * the encoder, which should always be based on the actual presentation
1457 * time, including any delay.
1458 *
1459 * - encoding: Set by libavcodec.
1460 * - decoding: unused
1461 */
1462 int delay;
1463
1464
5b28c8c3 1465 /* video only */
14bea432 1466 /**
21adafec 1467 * picture width / height.
115329f1 1468 * - encoding: MUST be set by user.
f5bccd85
DB
1469 * - decoding: Set by libavcodec.
1470 * Note: For compatibility it is possible to set this instead of
1471 * coded_width/height before decoding.
b71901e6 1472 */
de6d9b64 1473 int width, height;
115329f1 1474
b1edfce0 1475 /**
2bcbd984 1476 * Bitstream width / height, may be different from width/height.
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1477 * - encoding: unused
1478 * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
1479 */
1480 int coded_width, coded_height;
1481
e769f053 1482#define FF_ASPECT_EXTENDED 15
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MN
1483
1484 /**
f5bccd85
DB
1485 * the number of pictures in a group of pictures, or 0 for intra_only
1486 * - encoding: Set by user.
64863965 1487 * - decoding: unused
b71901e6
MN
1488 */
1489 int gop_size;
1490
1491 /**
f5bccd85 1492 * Pixel format, see PIX_FMT_xxx.
c1bdc930
TH
1493 * May be set by the demuxer if known from headers.
1494 * May be overriden by the decoder if it knows better.
f5bccd85 1495 * - encoding: Set by user.
c1bdc930 1496 * - decoding: Set by user if known, overridden by libavcodec if known
b71901e6 1497 */
e4eadb4b 1498 enum PixelFormat pix_fmt;
115329f1 1499
b71901e6 1500 /**
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1501 * Motion estimation algorithm used for video coding.
1502 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
1503 * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
1504 * - encoding: MUST be set by user.
1505 * - decoding: unused
1506 */
1507 int me_method;
1508
1509 /**
f5bccd85
DB
1510 * If non NULL, 'draw_horiz_band' is called by the libavcodec
1511 * decoder to draw a horizontal band. It improves cache usage. Not
b71901e6 1512 * all codecs can do that. You must check the codec capabilities
f5bccd85 1513 * beforehand.
37b00b47
AS
1514 * When multithreading is used, it may be called from multiple threads
1515 * at the same time; threads might draw different parts of the same AVFrame,
1516 * or multiple AVFrames, and there is no guarantee that slices will be drawn
1517 * in order.
24b1583a
IK
1518 * The function is also used by hardware acceleration APIs.
1519 * It is called at least once during frame decoding to pass
1520 * the data needed for hardware render.
1521 * In that mode instead of pixel data, AVFrame points to
1522 * a structure specific to the acceleration API. The application
1523 * reads the structure and can change some fields to indicate progress
1524 * or mark state.
64863965 1525 * - encoding: unused
f5bccd85 1526 * - decoding: Set by user.
3bb07d61
MN
1527 * @param height the height of the slice
1528 * @param y the y position of the slice
1529 * @param type 1->top field, 2->bottom field, 3->frame
1530 * @param offset offset into the AVFrame.data from which the slice should be read
b71901e6 1531 */
bf89e6b1 1532 void (*draw_horiz_band)(struct AVCodecContext *s,
560f773c 1533 const AVFrame *src, int offset[AV_NUM_DATA_POINTERS],
3bb07d61 1534 int y, int type, int height);
bf89e6b1 1535
a3a5f4d6 1536 /**
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1537 * callback to negotiate the pixelFormat
1538 * @param fmt is the list of formats which are supported by the codec,
1539 * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
1540 * The first is always the native one.
1541 * @return the chosen format
1542 * - encoding: unused
1543 * - decoding: Set by user, if not set the native format will be chosen.
a3a5f4d6 1544 */
b1edfce0 1545 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
de6d9b64 1546
718b27a7 1547 /**
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1548 * maximum number of B-frames between non-B-frames
1549 * Note: The output will be delayed by max_b_frames+1 relative to the input.
1550 * - encoding: Set by user.
1551 * - decoding: unused
718b27a7 1552 */
b1edfce0 1553 int max_b_frames;
115329f1 1554
b71901e6 1555 /**
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1556 * qscale factor between IP and B-frames
1557 * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
1558 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
1559 * - encoding: Set by user.
64863965 1560 * - decoding: unused
b71901e6 1561 */
b1edfce0 1562 float b_quant_factor;
115329f1 1563
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1564 /** obsolete FIXME remove */
1565 int rc_strategy;
1566#define FF_RC_STRATEGY_XVID 1
1567
1568 int b_frame_strategy;
115329f1 1569
63efd83a 1570#if FF_API_MPV_GLOBAL_OPTS
b71901e6 1571 /**
b1edfce0 1572 * luma single coefficient elimination threshold
f5bccd85 1573 * - encoding: Set by user.
64863965 1574 * - decoding: unused
b71901e6 1575 */
63efd83a 1576 attribute_deprecated int luma_elim_threshold;
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MN
1577
1578 /**
b1edfce0 1579 * chroma single coeff elimination threshold
f5bccd85 1580 * - encoding: Set by user.
64863965 1581 * - decoding: unused
b71901e6 1582 */
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1583 attribute_deprecated int chroma_elim_threshold;
1584#endif
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MN
1585
1586 /**
b1edfce0 1587 * qscale offset between IP and B-frames
f5bccd85 1588 * - encoding: Set by user.
64863965 1589 * - decoding: unused
b71901e6 1590 */
b1edfce0 1591 float b_quant_offset;
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MN
1592
1593 /**
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1594 * Size of the frame reordering buffer in the decoder.
1595 * For MPEG-2 it is 1 IPB or 0 low delay IP.
1596 * - encoding: Set by libavcodec.
1597 * - decoding: Set by libavcodec.
1598 */
1599 int has_b_frames;
1600
1601 /**
1602 * 0-> h263 quant 1-> mpeg quant
f5bccd85 1603 * - encoding: Set by user.
64863965 1604 * - decoding: unused
b71901e6 1605 */
b1edfce0 1606 int mpeg_quant;
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MN
1607
1608 /**
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AK
1609 * qscale factor between P and I-frames
1610 * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
662e5411 1611 * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
f5bccd85 1612 * - encoding: Set by user.
64863965 1613 * - decoding: unused
b71901e6 1614 */
b1edfce0 1615 float i_quant_factor;
64b7c5b6 1616
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1617 /**
1618 * qscale offset between P and I-frames
1619 * - encoding: Set by user.
1620 * - decoding: unused
1621 */
1622 float i_quant_offset;
9dbcbd92 1623
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1624 /**
1625 * luminance masking (0-> disabled)
1626 * - encoding: Set by user.
1627 * - decoding: unused
1628 */
1629 float lumi_masking;
115329f1 1630
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1631 /**
1632 * temporary complexity masking (0-> disabled)
1633 * - encoding: Set by user.
1634 * - decoding: unused
1635 */
1636 float temporal_cplx_masking;
de6d9b64 1637
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1638 /**
1639 * spatial complexity masking (0-> disabled)
1640 * - encoding: Set by user.
1641 * - decoding: unused
1642 */
1643 float spatial_cplx_masking;
115329f1 1644
b71901e6 1645 /**
b1edfce0 1646 * p block masking (0-> disabled)
f5bccd85 1647 * - encoding: Set by user.
64863965 1648 * - decoding: unused
b71901e6 1649 */
b1edfce0 1650 float p_masking;
115329f1 1651
b71901e6 1652 /**
b1edfce0 1653 * darkness masking (0-> disabled)
f5bccd85 1654 * - encoding: Set by user.
64863965 1655 * - decoding: unused
b71901e6 1656 */
b1edfce0 1657 float dark_masking;
115329f1 1658
b71901e6 1659 /**
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1660 * slice count
1661 * - encoding: Set by libavcodec.
1662 * - decoding: Set by user (or 0).
b71901e6 1663 */
b1edfce0 1664 int slice_count;
b71901e6 1665 /**
b1edfce0 1666 * prediction method (needed for huffyuv)
f5bccd85 1667 * - encoding: Set by user.
64863965 1668 * - decoding: unused
b71901e6 1669 */
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1670 int prediction_method;
1671#define FF_PRED_LEFT 0
1672#define FF_PRED_PLANE 1
1673#define FF_PRED_MEDIAN 2
115329f1 1674
b71901e6 1675 /**
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1676 * slice offsets in the frame in bytes
1677 * - encoding: Set/allocated by libavcodec.
1678 * - decoding: Set/allocated by user (or NULL).
b71901e6 1679 */
b1edfce0 1680 int *slice_offset;
0fd90455 1681
b71901e6 1682 /**
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1683 * sample aspect ratio (0 if unknown)
1684 * That is the width of a pixel divided by the height of the pixel.
1685 * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
1686 * - encoding: Set by user.
f5bccd85 1687 * - decoding: Set by libavcodec.
b71901e6 1688 */
b1edfce0 1689 AVRational sample_aspect_ratio;
115329f1 1690
b71901e6 1691 /**
b1edfce0 1692 * motion estimation comparison function
f5bccd85 1693 * - encoding: Set by user.
64863965 1694 * - decoding: unused
b71901e6 1695 */
b1edfce0 1696 int me_cmp;
b71901e6 1697 /**
b1edfce0 1698 * subpixel motion estimation comparison function
f5bccd85 1699 * - encoding: Set by user.
64863965 1700 * - decoding: unused
b71901e6 1701 */
b1edfce0 1702 int me_sub_cmp;
b71901e6 1703 /**
b1edfce0 1704 * macroblock comparison function (not supported yet)
f5bccd85 1705 * - encoding: Set by user.
64863965 1706 * - decoding: unused
b71901e6 1707 */
b1edfce0 1708 int mb_cmp;
b71901e6 1709 /**
b1edfce0 1710 * interlaced DCT comparison function
f5bccd85 1711 * - encoding: Set by user.
64863965 1712 * - decoding: unused
b71901e6 1713 */
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1714 int ildct_cmp;
1715#define FF_CMP_SAD 0
1716#define FF_CMP_SSE 1
1717#define FF_CMP_SATD 2
1718#define FF_CMP_DCT 3
1719#define FF_CMP_PSNR 4
1720#define FF_CMP_BIT 5
1721#define FF_CMP_RD 6
1722#define FF_CMP_ZERO 7
1723#define FF_CMP_VSAD 8
1724#define FF_CMP_VSSE 9
1725#define FF_CMP_NSSE 10
1726#define FF_CMP_W53 11
1727#define FF_CMP_W97 12
1728#define FF_CMP_DCTMAX 13
1729#define FF_CMP_DCT264 14
1730#define FF_CMP_CHROMA 256
115329f1 1731
b71901e6 1732 /**
b1edfce0 1733 * ME diamond size & shape
f5bccd85 1734 * - encoding: Set by user.
64863965 1735 * - decoding: unused
b71901e6 1736 */
b1edfce0 1737 int dia_size;
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1738
1739 /**
b1edfce0 1740 * amount of previous MV predictors (2a+1 x 2a+1 square)
f5bccd85 1741 * - encoding: Set by user.
64863965 1742 * - decoding: unused
b71901e6 1743 */
b1edfce0 1744 int last_predictor_count;
115329f1 1745
b71901e6 1746 /**
b1edfce0 1747 * prepass for motion estimation
f5bccd85 1748 * - encoding: Set by user.
64863965 1749 * - decoding: unused
b71901e6 1750 */
b1edfce0 1751 int pre_me;
115329f1 1752
b71901e6 1753 /**
b1edfce0 1754 * motion estimation prepass comparison function
f5bccd85 1755 * - encoding: Set by user.
64863965 1756 * - decoding: unused
b71901e6 1757 */
b1edfce0 1758 int me_pre_cmp;
917e06c8 1759
b71901e6 1760 /**
b1edfce0 1761 * ME prepass diamond size & shape
f5bccd85 1762 * - encoding: Set by user.
64863965 1763 * - decoding: unused
b71901e6 1764 */
b1edfce0 1765 int pre_dia_size;
115329f1 1766
c5d309f2 1767 /**
b1edfce0 1768 * subpel ME quality
f5bccd85 1769 * - encoding: Set by user.
64863965 1770 * - decoding: unused
c5d309f2 1771 */
b1edfce0 1772 int me_subpel_quality;
115329f1 1773
c5d309f2 1774 /**
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1775 * DTG active format information (additional aspect ratio
1776 * information only used in DVB MPEG-2 transport streams)
1777 * 0 if not set.
1778 *
1779 * - encoding: unused
1780 * - decoding: Set by decoder.
c5d309f2 1781 */
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1782 int dtg_active_format;
1783#define FF_DTG_AFD_SAME 8
1784#define FF_DTG_AFD_4_3 9
1785#define FF_DTG_AFD_16_9 10
1786#define FF_DTG_AFD_14_9 11
1787#define FF_DTG_AFD_4_3_SP_14_9 13
1788#define FF_DTG_AFD_16_9_SP_14_9 14
1789#define FF_DTG_AFD_SP_4_3 15
115329f1 1790
c5d309f2 1791 /**
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1792 * maximum motion estimation search range in subpel units
1793 * If 0 then no limit.
1794 *
f5bccd85 1795 * - encoding: Set by user.
64863965 1796 * - decoding: unused
c5d309f2 1797 */
b1edfce0 1798 int me_range;
115329f1 1799
c5d309f2 1800 /**
b1edfce0 1801 * intra quantizer bias
f5bccd85 1802 * - encoding: Set by user.
64863965 1803 * - decoding: unused
c5d309f2 1804 */
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1805 int intra_quant_bias;
1806#define FF_DEFAULT_QUANT_BIAS 999999
15415af4 1807
5e746b99 1808 /**
b1edfce0 1809 * inter quantizer bias
f5bccd85 1810 * - encoding: Set by user.
64863965 1811 * - decoding: unused
5e746b99 1812 */
b1edfce0 1813 int inter_quant_bias;
115329f1 1814
4f07f819 1815#if FF_API_COLOR_TABLE_ID
0c2dd16e 1816 /**
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1817 * color table ID
1818 * - encoding: unused
1819 * - decoding: Which clrtable should be used for 8bit RGB images.
1820 * Tables have to be stored somewhere. FIXME
2ad1516a 1821 */
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1822 attribute_deprecated int color_table_id;
1823#endif
2ad1516a 1824
144f0625 1825 /**
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1826 * slice flags
1827 * - encoding: unused
1828 * - decoding: Set by user.
144f0625 1829 */
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1830 int slice_flags;
1831#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1832#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1833#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1834
144f0625 1835 /**
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1836 * XVideo Motion Acceleration
1837 * - encoding: forbidden
1838 * - decoding: set by decoder
144f0625 1839 */
b1edfce0 1840 int xvmc_acceleration;
144f0625 1841
4d2858de 1842 /**
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1843 * macroblock decision mode
1844 * - encoding: Set by user.
1845 * - decoding: unused
4d2858de 1846 */
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1847 int mb_decision;
1848#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1849#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1850#define FF_MB_DECISION_RD 2 ///< rate distortion
4d2858de 1851
6b72ac63 1852 /**
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1853 * custom intra quantization matrix
1854 * - encoding: Set by user, can be NULL.
1855 * - decoding: Set by libavcodec.
bec89a84 1856 */
b1edfce0 1857 uint16_t *intra_matrix;
7160bb71 1858
11f18faf 1859 /**
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1860 * custom inter quantization matrix
1861 * - encoding: Set by user, can be NULL.
1862 * - decoding: Set by libavcodec.
11f18faf 1863 */
b1edfce0 1864 uint16_t *inter_matrix;
115329f1 1865
11f18faf 1866 /**
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1867 * scene change detection threshold
1868 * 0 is default, larger means fewer detected scene changes.
f5bccd85 1869 * - encoding: Set by user.
64863965 1870 * - decoding: unused
11f18faf 1871 */
b1edfce0 1872 int scenechange_threshold;
115329f1 1873
5d3cea3a 1874 /**
b1edfce0 1875 * noise reduction strength
f5bccd85 1876 * - encoding: Set by user.
b1edfce0 1877 * - decoding: unused
5d3cea3a 1878 */
b1edfce0 1879 int noise_reduction;
1e491e29 1880
16b7557b 1881#if FF_API_INTER_THRESHOLD
1e491e29 1882 /**
16b7557b 1883 * @deprecated this field is unused
1e491e29 1884 */
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AK
1885 attribute_deprecated int inter_threshold;
1886#endif
c8c437bc 1887
23bfcc06 1888#if FF_API_MPV_GLOBAL_OPTS
c8c437bc 1889 /**
23bfcc06 1890 * @deprecated use mpegvideo private options instead
c8c437bc 1891 */
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AK
1892 attribute_deprecated int quantizer_noise_shaping;
1893#endif
115329f1 1894
140cb663 1895 /**
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1896 * Motion estimation threshold below which no motion estimation is
1897 * performed, but instead the user specified motion vectors are used.
1898 *
f5bccd85 1899 * - encoding: Set by user.
b1edfce0 1900 * - decoding: unused
0c9bbaec 1901 */
b1edfce0 1902 int me_threshold;
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WH
1903
1904 /**
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1905 * Macroblock threshold below which the user specified macroblock types will be used.
1906 * - encoding: Set by user.
64863965 1907 * - decoding: unused
140cb663 1908 */
b1edfce0 1909 int mb_threshold;
115329f1 1910
1457ab52 1911 /**
b1edfce0 1912 * precision of the intra DC coefficient - 8
f5bccd85 1913 * - encoding: Set by user.
64863965 1914 * - decoding: unused
1457ab52 1915 */
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AK
1916 int intra_dc_precision;
1917
1457ab52 1918 /**
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1919 * Number of macroblock rows at the top which are skipped.
1920 * - encoding: unused
1921 * - decoding: Set by user.
1457ab52 1922 */
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1923 int skip_top;
1924
1457ab52 1925 /**
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1926 * Number of macroblock rows at the bottom which are skipped.
1927 * - encoding: unused
1928 * - decoding: Set by user.
1457ab52 1929 */
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1930 int skip_bottom;
1931
622348f9 1932 /**
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1933 * Border processing masking, raises the quantizer for mbs on the borders
1934 * of the picture.
f5bccd85 1935 * - encoding: Set by user.
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MN
1936 * - decoding: unused
1937 */
b1edfce0 1938 float border_masking;
115329f1 1939
1457ab52 1940 /**
b1edfce0 1941 * minimum MB lagrange multipler
f5bccd85 1942 * - encoding: Set by user.
64863965 1943 * - decoding: unused
1457ab52 1944 */
b1edfce0 1945 int mb_lmin;
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MN
1946
1947 /**
b1edfce0 1948 * maximum MB lagrange multipler
f5bccd85 1949 * - encoding: Set by user.
64863965 1950 * - decoding: unused
b07a5980 1951 */
b1edfce0 1952 int mb_lmax;
70ac76c0 1953
f5fb6b34 1954 /**
b1edfce0 1955 *
f5bccd85 1956 * - encoding: Set by user.
64863965 1957 * - decoding: unused
f5fb6b34 1958 */
b1edfce0 1959 int me_penalty_compensation;
b07a5980 1960
70ac76c0 1961 /**
b1edfce0 1962 *
f5bccd85 1963 * - encoding: Set by user.
64863965 1964 * - decoding: unused
70ac76c0 1965 */
b1edfce0 1966 int bidir_refine;
826f429a 1967
70ac76c0 1968 /**
b1edfce0 1969 *
f5bccd85 1970 * - encoding: Set by user.
64863965 1971 * - decoding: unused
70ac76c0 1972 */
b1edfce0 1973 int brd_scale;
70ac76c0 1974
826f429a 1975 /**
b1edfce0 1976 * minimum GOP size
f5bccd85 1977 * - encoding: Set by user.
64863965 1978 * - decoding: unused
826f429a 1979 */
b1edfce0 1980 int keyint_min;
826f429a 1981
a33c7159 1982 /**
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1983 * number of reference frames
1984 * - encoding: Set by user.
1985 * - decoding: Set by lavc.
a33c7159 1986 */
b1edfce0 1987 int refs;
e2f9490e
FB
1988
1989 /**
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1990 * chroma qp offset from luma
1991 * - encoding: Set by user.
1992 * - decoding: unused
e2f9490e 1993 */
b1edfce0 1994 int chromaoffset;
e2f9490e 1995
ebbcdc9a 1996 /**
b1edfce0 1997 * Multiplied by qscale for each frame and added to scene_change_score.
f5bccd85
DB
1998 * - encoding: Set by user.
1999 * - decoding: unused
ebbcdc9a 2000 */
b1edfce0 2001 int scenechange_factor;
ebbcdc9a 2002
65f7062d 2003 /**
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2004 *
2005 * Note: Value depends upon the compare function used for fullpel ME.
f5bccd85 2006 * - encoding: Set by user.
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MN
2007 * - decoding: unused
2008 */
b1edfce0 2009 int mv0_threshold;
115329f1 2010
1984f635 2011 /**
b1edfce0 2012 * Adjust sensitivity of b_frame_strategy 1.
f5bccd85 2013 * - encoding: Set by user.
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MN
2014 * - decoding: unused
2015 */
b1edfce0 2016 int b_sensitivity;
5cd62665
ZK
2017
2018 /**
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2019 * Chromaticity coordinates of the source primaries.
2020 * - encoding: Set by user
2021 * - decoding: Set by libavcodec
5cd62665 2022 */
b1edfce0 2023 enum AVColorPrimaries color_primaries;
115329f1 2024
3d2e8cce 2025 /**
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2026 * Color Transfer Characteristic.
2027 * - encoding: Set by user
2028 * - decoding: Set by libavcodec
3d2e8cce 2029 */
b1edfce0 2030 enum AVColorTransferCharacteristic color_trc;
115329f1 2031
11e659c2 2032 /**
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2033 * YUV colorspace type.
2034 * - encoding: Set by user
2035 * - decoding: Set by libavcodec
2036 */
2037 enum AVColorSpace colorspace;
2038
2039 /**
2040 * MPEG vs JPEG YUV range.
2041 * - encoding: Set by user
2042 * - decoding: Set by libavcodec
2043 */
2044 enum AVColorRange color_range;
2045
2046 /**
2047 * This defines the location of chroma samples.
2048 * - encoding: Set by user
2049 * - decoding: Set by libavcodec
2050 */
2051 enum AVChromaLocation chroma_sample_location;
2052
2053 /**
2054 * Number of slices.
2055 * Indicates number of picture subdivisions. Used for parallelized
2056 * decoding.
2057 * - encoding: Set by user
11e659c2
MN
2058 * - decoding: unused
2059 */
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2060 int slices;
2061
2062 /** Field order
2063 * - encoding: set by libavcodec
2064 * - decoding: Set by libavcodec
2065 */
2066 enum AVFieldOrder field_order;
2067
2068 /* audio only */
2069 int sample_rate; ///< samples per second
2070 int channels; ///< number of audio channels
11e659c2
MN
2071
2072 /**
b1edfce0 2073 * audio sample format
f5bccd85 2074 * - encoding: Set by user.
b1edfce0 2075 * - decoding: Set by libavcodec.
11e659c2 2076 */
b1edfce0 2077 enum AVSampleFormat sample_fmt; ///< sample format
115329f1 2078
b1edfce0 2079 /* The following data should not be initialized. */
3bb07d61 2080 /**
b1edfce0 2081 * Samples per packet, initialized when calling 'init'.
3bb07d61 2082 */
b1edfce0 2083 int frame_size;
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AK
2084
2085 /**
2086 * Frame counter, set by libavcodec.
2087 *
2088 * - decoding: total number of frames returned from the decoder so far.
2089 * - encoding: total number of frames passed to the encoder so far.
2090 *
2091 * @note the counter is not incremented if encoding/decoding resulted in
2092 * an error.
2093 */
2094 int frame_number;
3bb07d61 2095
fb364ada 2096 /**
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AK
2097 * number of bytes per packet if constant and known or 0
2098 * Used by some WAV based audio codecs.
fb364ada 2099 */
b1edfce0 2100 int block_align;
115329f1 2101
7d1c3fc1 2102 /**
b1edfce0 2103 * Audio cutoff bandwidth (0 means "automatic")
f5bccd85 2104 * - encoding: Set by user.
7d1c3fc1
MN
2105 * - decoding: unused
2106 */
b1edfce0 2107 int cutoff;
d6eb3c50 2108
b1edfce0 2109#if FF_API_REQUEST_CHANNELS
d6eb3c50 2110 /**
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AK
2111 * Decoder should decode to this many channels if it can (0 for default)
2112 * - encoding: unused
2113 * - decoding: Set by user.
2114 * @deprecated Deprecated in favor of request_channel_layout.
d6eb3c50 2115 */
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2116 int request_channels;
2117#endif
d6eb3c50
MN
2118
2119 /**
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2120 * Audio channel layout.
2121 * - encoding: set by user.
2122 * - decoding: set by libavcodec.
d6eb3c50 2123 */
b1edfce0 2124 uint64_t channel_layout;
115329f1 2125
541ae140 2126 /**
b1edfce0 2127 * Request decoder to use this channel layout if it can (0 for default)
541ae140 2128 * - encoding: unused
b1edfce0 2129 * - decoding: Set by user.
541ae140 2130 */
b1edfce0 2131 uint64_t request_channel_layout;
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MN
2132
2133 /**
b1edfce0 2134 * Type of service that the audio stream conveys.
f5bccd85 2135 * - encoding: Set by user.
b1edfce0 2136 * - decoding: Set by libavcodec.
05fbd0a2 2137 */
b1edfce0 2138 enum AVAudioServiceType audio_service_type;
158c7f05
MN
2139
2140 /**
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2141 * Used to request a sample format from the decoder.
2142 * - encoding: unused.
2143 * - decoding: Set by user.
158c7f05 2144 */
b1edfce0 2145 enum AVSampleFormat request_sample_fmt;
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MN
2146
2147 /**
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2148 * Called at the beginning of each frame to get a buffer for it.
2149 *
2150 * The function will set AVFrame.data[], AVFrame.linesize[].
2151 * AVFrame.extended_data[] must also be set, but it should be the same as
2152 * AVFrame.data[] except for planar audio with more channels than can fit
2153 * in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as
2154 * many data pointers as it can hold.
2155 *
2156 * if CODEC_CAP_DR1 is not set then get_buffer() must call
2157 * avcodec_default_get_buffer() instead of providing buffers allocated by
2158 * some other means.
2159 *
2160 * AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't
2161 * need it. avcodec_default_get_buffer() aligns the output buffer properly,
2162 * but if get_buffer() is overridden then alignment considerations should
2163 * be taken into account.
2164 *
2165 * @see avcodec_default_get_buffer()
2166 *
2167 * Video:
2168 *
2169 * If pic.reference is set then the frame will be read later by libavcodec.
2170 * avcodec_align_dimensions2() should be used to find the required width and
2171 * height, as they normally need to be rounded up to the next multiple of 16.
2172 *
2173 * If frame multithreading is used and thread_safe_callbacks is set,
2174 * it may be called from a different thread, but not from more than one at
2175 * once. Does not need to be reentrant.
2176 *
2177 * @see release_buffer(), reget_buffer()
2178 * @see avcodec_align_dimensions2()
2179 *
2180 * Audio:
2181 *
2182 * Decoders request a buffer of a particular size by setting
2183 * AVFrame.nb_samples prior to calling get_buffer(). The decoder may,
2184 * however, utilize only part of the buffer by setting AVFrame.nb_samples
2185 * to a smaller value in the output frame.
2186 *
2187 * Decoders cannot use the buffer after returning from
2188 * avcodec_decode_audio4(), so they will not call release_buffer(), as it
2189 * is assumed to be released immediately upon return.
2190 *
2191 * As a convenience, av_samples_get_buffer_size() and
2192 * av_samples_fill_arrays() in libavutil may be used by custom get_buffer()
2193 * functions to find the required data size and to fill data pointers and
2194 * linesize. In AVFrame.linesize, only linesize[0] may be set for audio
2195 * since all planes must be the same size.
2196 *
2197 * @see av_samples_get_buffer_size(), av_samples_fill_arrays()
2198 *
2199 * - encoding: unused
2200 * - decoding: Set by libavcodec, user can override.
158c7f05 2201 */
b1edfce0 2202 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
2a2bbcb0 2203
821cb11f 2204 /**
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2205 * Called to release buffers which were allocated with get_buffer.
2206 * A released buffer can be reused in get_buffer().
2207 * pic.data[*] must be set to NULL.
2208 * May be called from a different thread if frame multithreading is used,
2209 * but not by more than one thread at once, so does not need to be reentrant.
2210 * - encoding: unused
2211 * - decoding: Set by libavcodec, user can override.
821cb11f 2212 */
b1edfce0 2213 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
115329f1 2214
074c4ca7 2215 /**
f5bccd85
DB
2216 * Called at the beginning of a frame to get cr buffer for it.
2217 * Buffer type (size, hints) must be the same. libavcodec won't check it.
2218 * libavcodec will pass previous buffer in pic, function should return
e1c2a5a0 2219 * same buffer or new buffer with old frame "painted" into it.
f5bccd85 2220 * If pic.data[0] == NULL must behave like get_buffer().
f1b99cc6
MN
2221 * if CODEC_CAP_DR1 is not set then reget_buffer() must call
2222 * avcodec_default_reget_buffer() instead of providing buffers allocated by
2223 * some other means.
074c4ca7 2224 * - encoding: unused
53128bc3 2225 * - decoding: Set by libavcodec, user can override.
074c4ca7 2226 */
e1c2a5a0 2227 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
ba58dabc 2228
ba58dabc 2229
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AK
2230 /* - encoding parameters */
2231 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
2232 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
ba58dabc
MN
2233
2234 /**
b1edfce0 2235 * minimum quantizer
f5bccd85 2236 * - encoding: Set by user.
b1edfce0 2237 * - decoding: unused
ba58dabc 2238 */
b1edfce0 2239 int qmin;
7ebfc0ea
MN
2240
2241 /**
b1edfce0 2242 * maximum quantizer
f5bccd85
DB
2243 * - encoding: Set by user.
2244 * - decoding: unused
7ebfc0ea 2245 */
b1edfce0 2246 int qmax;
115329f1 2247
77ea0d4b 2248 /**
b1edfce0 2249 * maximum quantizer difference between frames
f5bccd85 2250 * - encoding: Set by user.
77ea0d4b
MN
2251 * - decoding: unused
2252 */
b1edfce0 2253 int max_qdiff;
9c3d33d6
MN
2254
2255 /**
b1edfce0
AK
2256 * ratecontrol qmin qmax limiting method
2257 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
f5bccd85 2258 * - encoding: Set by user.
b1edfce0 2259 * - decoding: unused
9c3d33d6 2260 */
b1edfce0 2261 float rc_qsquish;
115329f1 2262
b1edfce0
AK
2263 float rc_qmod_amp;
2264 int rc_qmod_freq;
a4d36c11
MN
2265
2266 /**
b1edfce0 2267 * decoder bitstream buffer size
f5bccd85 2268 * - encoding: Set by user.
f20f8a8b 2269 * - decoding: unused
a4d36c11 2270 */
b1edfce0 2271 int rc_buffer_size;
f20f8a8b
MN
2272
2273 /**
b1edfce0
AK
2274 * ratecontrol override, see RcOverride
2275 * - encoding: Allocated/set/freed by user.
f20f8a8b
MN
2276 * - decoding: unused
2277 */
b1edfce0
AK
2278 int rc_override_count;
2279 RcOverride *rc_override;
bf266e19
MN
2280
2281 /**
b1edfce0
AK
2282 * rate control equation
2283 * - encoding: Set by user
bf266e19
MN
2284 * - decoding: unused
2285 */
b1edfce0 2286 const char *rc_eq;
d4c5d2ad
MN
2287
2288 /**
b1edfce0 2289 * maximum bitrate
f5bccd85 2290 * - encoding: Set by user.
d4c5d2ad
MN
2291 * - decoding: unused
2292 */
b1edfce0 2293 int rc_max_rate;
baced9f5
MN
2294
2295 /**
b1edfce0 2296 * minimum bitrate
f5bccd85 2297 * - encoding: Set by user.
b1edfce0 2298 * - decoding: unused
baced9f5 2299 */
b1edfce0 2300 int rc_min_rate;
0215006a 2301
b1edfce0 2302 float rc_buffer_aggressivity;
c4ab43ff 2303
baced9f5 2304 /**
b1edfce0 2305 * initial complexity for pass1 ratecontrol
f5bccd85 2306 * - encoding: Set by user.
b1edfce0 2307 * - decoding: unused
178fcca8 2308 */
b1edfce0 2309 float rc_initial_cplx;
21adafec
MN
2310
2311 /**
b1edfce0
AK
2312 * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
2313 * - encoding: Set by user.
2314 * - decoding: unused.
21adafec 2315 */
b1edfce0 2316 float rc_max_available_vbv_use;
bbf18b21
MN
2317
2318 /**
b1edfce0 2319 * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
f5bccd85 2320 * - encoding: Set by user.
b1edfce0 2321 * - decoding: unused.
bbf18b21 2322 */
b1edfce0 2323 float rc_min_vbv_overflow_use;
bbf18b21
MN
2324
2325 /**
b1edfce0 2326 * Number of bits which should be loaded into the rc buffer before decoding starts.
f5bccd85 2327 * - encoding: Set by user.
bbf18b21
MN
2328 * - decoding: unused
2329 */
b1edfce0 2330 int rc_initial_buffer_occupancy;
0fd6aea1 2331
b1edfce0
AK
2332#define FF_CODER_TYPE_VLC 0
2333#define FF_CODER_TYPE_AC 1
2334#define FF_CODER_TYPE_RAW 2
2335#define FF_CODER_TYPE_RLE 3
2336#define FF_CODER_TYPE_DEFLATE 4
0fd6aea1 2337 /**
b1edfce0 2338 * coder type
f5bccd85 2339 * - encoding: Set by user.
0fd6aea1
MN
2340 * - decoding: unused
2341 */
b1edfce0 2342 int coder_type;
0fd6aea1
MN
2343
2344 /**
b1edfce0 2345 * context model
f5bccd85 2346 * - encoding: Set by user.
0fd6aea1
MN
2347 * - decoding: unused
2348 */
b1edfce0 2349 int context_model;
957c743a
CM
2350
2351 /**
b1edfce0 2352 * minimum Lagrange multipler
f5bccd85 2353 * - encoding: Set by user.
957c743a
CM
2354 * - decoding: unused
2355 */
b1edfce0 2356 int lmin;
6e0d8c06
MN
2357
2358 /**
b1edfce0 2359 * maximum Lagrange multipler
f5bccd85 2360 * - encoding: Set by user.
6e0d8c06
MN
2361 * - decoding: unused
2362 */
b1edfce0 2363 int lmax;
6e0d8c06
MN
2364
2365 /**
b1edfce0 2366 * frame skip threshold
f5bccd85 2367 * - encoding: Set by user.
6e0d8c06
MN
2368 * - decoding: unused
2369 */
b1edfce0 2370 int frame_skip_threshold;
09c3e44e
MN
2371
2372 /**
b1edfce0 2373 * frame skip factor
f5bccd85 2374 * - encoding: Set by user.
09c3e44e
MN
2375 * - decoding: unused
2376 */
b1edfce0 2377 int frame_skip_factor;
316a2ec8
MN
2378
2379 /**
b1edfce0 2380 * frame skip exponent
f5bccd85 2381 * - encoding: Set by user.
316a2ec8
MN
2382 * - decoding: unused
2383 */
b1edfce0 2384 int frame_skip_exp;
e8501c93
MN
2385
2386 /**
b1edfce0 2387 * frame skip comparison function
f5bccd85 2388 * - encoding: Set by user.
e8501c93
MN
2389 * - decoding: unused
2390 */
b1edfce0 2391 int frame_skip_cmp;
58f7833e 2392
58f7833e 2393 /**
b1edfce0 2394 * trellis RD quantization
f5bccd85 2395 * - encoding: Set by user.
58f7833e
RS
2396 * - decoding: unused
2397 */
b1edfce0 2398 int trellis;
58f7833e
RS
2399
2400 /**
f5bccd85 2401 * - encoding: Set by user.
b1edfce0 2402 * - decoding: unused
58f7833e 2403 */
b1edfce0 2404 int min_prediction_order;
58f7833e
RS
2405
2406 /**
f5bccd85 2407 * - encoding: Set by user.
58f7833e
RS
2408 * - decoding: unused
2409 */
b1edfce0 2410 int max_prediction_order;
58f7833e 2411
58f7833e 2412 /**
b1edfce0 2413 * GOP timecode frame start number, in non drop frame format
f5bccd85 2414 * - encoding: Set by user.
58f7833e
RS
2415 * - decoding: unused
2416 */
b1edfce0
AK
2417 int64_t timecode_frame_start;
2418
2419 /* The RTP callback: This function is called */
2420 /* every time the encoder has a packet to send. */
2421 /* It depends on the encoder if the data starts */
2422 /* with a Start Code (it should). H.263 does. */
2423 /* mb_nb contains the number of macroblocks */
2424 /* encoded in the RTP payload. */
2425 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
2426
2427 int rtp_payload_size; /* The size of the RTP payload: the coder will */
2428 /* do its best to deliver a chunk with size */
2429 /* below rtp_payload_size, the chunk will start */
2430 /* with a start code on some codecs like H.263. */
2431 /* This doesn't take account of any particular */
2432 /* headers inside the transmitted RTP payload. */
2433
2434 /* statistics, used for 2-pass encoding */
2435 int mv_bits;
2436 int header_bits;
2437 int i_tex_bits;
2438 int p_tex_bits;
2439 int i_count;
2440 int p_count;
2441 int skip_count;
2442 int misc_bits;
58f7833e 2443
14f0c8e2 2444 /**
b1edfce0
AK
2445 * number of bits used for the previously encoded frame
2446 * - encoding: Set by libavcodec.
14f0c8e2
LA
2447 * - decoding: unused
2448 */
b1edfce0 2449 int frame_bits;
39a64e30
CH
2450
2451 /**
b1edfce0
AK
2452 * pass1 encoding statistics output buffer
2453 * - encoding: Set by libavcodec.
39a64e30
CH
2454 * - decoding: unused
2455 */
b1edfce0 2456 char *stats_out;
1dd509b1
MN
2457
2458 /**
b1edfce0
AK
2459 * pass2 encoding statistics input buffer
2460 * Concatenated stuff from stats_out of pass1 should be placed here.
2461 * - encoding: Allocated/set/freed by user.
1dd509b1
MN
2462 * - decoding: unused
2463 */
b1edfce0 2464 char *stats_in;
f9243d34
CH
2465
2466 /**
b1edfce0
AK
2467 * Work around bugs in encoders which sometimes cannot be detected automatically.
2468 * - encoding: Set by user
2469 * - decoding: Set by user
f9243d34 2470 */
b1edfce0
AK
2471 int workaround_bugs;
2472#define FF_BUG_AUTODETECT 1 ///< autodetection
2473#define FF_BUG_OLD_MSMPEG4 2
2474#define FF_BUG_XVID_ILACE 4
2475#define FF_BUG_UMP4 8
2476#define FF_BUG_NO_PADDING 16
2477#define FF_BUG_AMV 32
2478#define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default.
2479#define FF_BUG_QPEL_CHROMA 64
2480#define FF_BUG_STD_QPEL 128
2481#define FF_BUG_QPEL_CHROMA2 256
2482#define FF_BUG_DIRECT_BLOCKSIZE 512
2483#define FF_BUG_EDGE 1024
2484#define FF_BUG_HPEL_CHROMA 2048
2485#define FF_BUG_DC_CLIP 4096
2486#define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders.
2487#define FF_BUG_TRUNCATED 16384
a403fc03
JR
2488
2489 /**
b1edfce0 2490 * strictly follow the standard (MPEG4, ...).
f5bccd85 2491 * - encoding: Set by user.
b1edfce0
AK
2492 * - decoding: Set by user.
2493 * Setting this to STRICT or higher means the encoder and decoder will
2494 * generally do stupid things, whereas setting it to unofficial or lower
2495 * will mean the encoder might produce output that is not supported by all
2496 * spec-compliant decoders. Decoders don't differentiate between normal,
2497 * unofficial and experimental (that is, they always try to decode things
2498 * when they can) unless they are explicitly asked to behave stupidly
2499 * (=strictly conform to the specs)
a403fc03 2500 */
b1edfce0
AK
2501 int strict_std_compliance;
2502#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to an older more strict version of the spec or reference software.
2503#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences.
2504#define FF_COMPLIANCE_NORMAL 0
2505#define FF_COMPLIANCE_UNOFFICIAL -1 ///< Allow unofficial extensions
2506#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things.
a403fc03 2507
a403fc03 2508 /**
b1edfce0
AK
2509 * error concealment flags
2510 * - encoding: unused
2511 * - decoding: Set by user.
a403fc03 2512 */
b1edfce0
AK
2513 int error_concealment;
2514#define FF_EC_GUESS_MVS 1
2515#define FF_EC_DEBLOCK 2
a403fc03
JR
2516
2517 /**
b1edfce0 2518 * debug
f5bccd85 2519 * - encoding: Set by user.
b1edfce0 2520 * - decoding: Set by user.
a403fc03 2521 */
b1edfce0
AK
2522 int debug;
2523#define FF_DEBUG_PICT_INFO 1
2524#define FF_DEBUG_RC 2
2525#define FF_DEBUG_BITSTREAM 4
2526#define FF_DEBUG_MB_TYPE 8
2527#define FF_DEBUG_QP 16
2528#define FF_DEBUG_MV 32
2529#define FF_DEBUG_DCT_COEFF 0x00000040
2530#define FF_DEBUG_SKIP 0x00000080
2531#define FF_DEBUG_STARTCODE 0x00000100
2532#define FF_DEBUG_PTS 0x00000200
2533#define FF_DEBUG_ER 0x00000400
2534#define FF_DEBUG_MMCO 0x00000800
2535#define FF_DEBUG_BUGS 0x00001000
2536#define FF_DEBUG_VIS_QP 0x00002000
2537#define FF_DEBUG_VIS_MB_TYPE 0x00004000
2538#define FF_DEBUG_BUFFERS 0x00008000
2539#define FF_DEBUG_THREADS 0x00010000
188dea1d 2540
80d617f5 2541 /**
b1edfce0 2542 * debug
f5bccd85 2543 * - encoding: Set by user.
b1edfce0 2544 * - decoding: Set by user.
80d617f5 2545 */
b1edfce0
AK
2546 int debug_mv;
2547#define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
2548#define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
2549#define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
b1ec601f
RD
2550
2551 /**
b1edfce0 2552 * Error recognition; may misdetect some more or less valid parts as errors.
85947156
VS
2553 * - encoding: unused
2554 * - decoding: Set by user.
b1ec601f 2555 */
b1edfce0
AK
2556 int err_recognition;
2557#define AV_EF_CRCCHECK (1<<0)
2558#define AV_EF_BITSTREAM (1<<1)
2559#define AV_EF_BUFFER (1<<2)
2560#define AV_EF_EXPLODE (1<<3)
1408352a 2561
79de84f2
MN
2562 /**
2563 * opaque 64bit number (generally a PTS) that will be reordered and
2564 * output in AVFrame.reordered_opaque
81c623fa 2565 * @deprecated in favor of pkt_pts
79de84f2
MN
2566 * - encoding: unused
2567 * - decoding: Set by user.
2568 */
2569 int64_t reordered_opaque;
312420f3
PR
2570
2571 /**
b1edfce0
AK
2572 * Hardware accelerator in use
2573 * - encoding: unused.
2574 * - decoding: Set by libavcodec
312420f3 2575 */
b1edfce0 2576 struct AVHWAccel *hwaccel;
0d72e7d0
PR
2577
2578 /**
b1edfce0
AK
2579 * Hardware accelerator context.
2580 * For some hardware accelerators, a global context needs to be
2581 * provided by the user. In that case, this holds display-dependent
2582 * data Libav cannot instantiate itself. Please refer to the
2583 * Libav HW accelerator documentation to know how to fill this
2584 * is. e.g. for VA API, this is a struct vaapi_context.
2585 * - encoding: unused
2586 * - decoding: Set by user
0d72e7d0 2587 */
b1edfce0 2588 void *hwaccel_context;
0d72e7d0
PR
2589
2590 /**
b1edfce0
AK
2591 * error
2592 * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
2593 * - decoding: unused
0d72e7d0 2594 */
b1edfce0 2595 uint64_t error[AV_NUM_DATA_POINTERS];
3bff4d8b
BC
2596
2597 /**
b1edfce0 2598 * DCT algorithm, see FF_DCT_* below
3bff4d8b 2599 * - encoding: Set by user.
b1edfce0 2600 * - decoding: unused
3bff4d8b 2601 */
b1edfce0
AK
2602 int dct_algo;
2603#define FF_DCT_AUTO 0
2604#define FF_DCT_FASTINT 1
2605#define FF_DCT_INT 2
2606#define FF_DCT_MMX 3
2607#define FF_DCT_ALTIVEC 5
2608#define FF_DCT_FAAN 6
3bff4d8b
BC
2609
2610 /**
b1edfce0 2611 * IDCT algorithm, see FF_IDCT_* below.
3bff4d8b 2612 * - encoding: Set by user.
b1edfce0 2613 * - decoding: Set by user.
3bff4d8b 2614 */
b1edfce0
AK
2615 int idct_algo;
2616#define FF_IDCT_AUTO 0
2617#define FF_IDCT_INT 1
2618#define FF_IDCT_SIMPLE 2
2619#define FF_IDCT_SIMPLEMMX 3
2620#define FF_IDCT_LIBMPEG2MMX 4
2621#define FF_IDCT_MMI 5
2622#define FF_IDCT_ARM 7
2623#define FF_IDCT_ALTIVEC 8
2624#define FF_IDCT_SH4 9
2625#define FF_IDCT_SIMPLEARM 10
2626#define FF_IDCT_H264 11
2627#define FF_IDCT_VP3 12
2628#define FF_IDCT_IPP 13
2629#define FF_IDCT_XVIDMMX 14
2630#define FF_IDCT_CAVS 15
2631#define FF_IDCT_SIMPLEARMV5TE 16
2632#define FF_IDCT_SIMPLEARMV6 17
2633#define FF_IDCT_SIMPLEVIS 18
2634#define FF_IDCT_WMV2 19
2635#define FF_IDCT_FAAN 20
2636#define FF_IDCT_EA 21
2637#define FF_IDCT_SIMPLENEON 22
2638#define FF_IDCT_SIMPLEALPHA 23
2639#define FF_IDCT_BINK 24
40e5d31b 2640
95510be8 2641#if FF_API_DSP_MASK
40e5d31b 2642 /**
95510be8
MR
2643 * Unused.
2644 * @deprecated use av_set_cpu_flags_mask() instead.
40e5d31b 2645 */
95510be8
MR
2646 attribute_deprecated unsigned dsp_mask;
2647#endif
b1edfce0
AK
2648
2649 /**
2650 * bits per sample/pixel from the demuxer (needed for huffyuv).
2651 * - encoding: Set by libavcodec.
2652 * - decoding: Set by user.
2653 */
2654 int bits_per_coded_sample;
2655
2656 /**
2657 * Bits per sample/pixel of internal libavcodec pixel/sample format.
2658 * - encoding: set by user.
2659 * - decoding: set by libavcodec.
2660 */
2661 int bits_per_raw_sample;
3797c74b
MN
2662
2663 /**
b1edfce0
AK
2664 * low resolution decoding, 1-> 1/2 size, 2->1/4 size
2665 * - encoding: unused
2666 * - decoding: Set by user.
3797c74b 2667 */
2bcbd984 2668 attribute_deprecated int lowres;
1aea7018
GB
2669
2670 /**
b1edfce0
AK
2671 * the picture in the bitstream
2672 * - encoding: Set by libavcodec.
2673 * - decoding: Set by libavcodec.
1aea7018 2674 */
b1edfce0 2675 AVFrame *coded_frame;
4ee6a5c1
MN
2676
2677 /**
b1edfce0
AK
2678 * thread count
2679 * is used to decide how many independent tasks should be passed to execute()
2680 * - encoding: Set by user.
2681 * - decoding: Set by user.
4ee6a5c1 2682 */
b1edfce0 2683 int thread_count;
4ee6a5c1
MN
2684
2685 /**
b1edfce0
AK
2686 * Which multithreading methods to use.
2687 * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
2688 * so clients which cannot provide future frames should not use it.
2689 *
2690 * - encoding: Set by user, otherwise the default is used.
2691 * - decoding: Set by user, otherwise the default is used.
4ee6a5c1 2692 */
b1edfce0
AK
2693 int thread_type;
2694#define FF_THREAD_FRAME 1 ///< Decode more than one frame at once
2695#define FF_THREAD_SLICE 2 ///< Decode more than one part of a single frame at once
4ee6a5c1
MN
2696
2697 /**
b1edfce0
AK
2698 * Which multithreading methods are in use by the codec.
2699 * - encoding: Set by libavcodec.
2700 * - decoding: Set by libavcodec.
4ee6a5c1 2701 */
b1edfce0 2702 int active_thread_type;
4ee6a5c1
MN
2703
2704 /**
b1edfce0 2705 * Set by the client if its custom get_buffer() callback can be called
ad027866 2706 * synchronously from another thread, which allows faster multithreaded decoding.
b1edfce0
AK
2707 * draw_horiz_band() will be called from other threads regardless of this setting.
2708 * Ignored if the default get_buffer() is used.
2709 * - encoding: Set by user.
2710 * - decoding: Set by user.
4ee6a5c1 2711 */
b1edfce0 2712 int thread_safe_callbacks;
580a7465
DC
2713
2714 /**
b1edfce0
AK
2715 * The codec may call this to execute several independent things.
2716 * It will return only after finishing all tasks.
2717 * The user may replace this with some multithreaded implementation,
2718 * the default implementation will execute the parts serially.
2719 * @param count the number of things to execute
2720 * - encoding: Set by libavcodec, user can override.
2721 * - decoding: Set by libavcodec, user can override.
580a7465 2722 */
b1edfce0 2723 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size);
8d23a86f
RD
2724
2725 /**
2726 * The codec may call this to execute several independent things.
2727 * It will return only after finishing all tasks.
2728 * The user may replace this with some multithreaded implementation,
2729 * the default implementation will execute the parts serially.
2730 * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
2731 * @param c context passed also to func
2732 * @param count the number of things to execute
2733 * @param arg2 argument passed unchanged to func
2734 * @param ret return values of executed functions, must have space for "count" values. May be NULL.
2735 * @param func function that will be called count times, with jobnr from 0 to count-1.
2736 * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
2737 * two instances of func executing at the same time will have the same threadnr.
2738 * @return always 0 currently, but code should handle a future improvement where when any call to func
2739 * returns < 0 no further calls to func may be done and < 0 is returned.
2740 * - encoding: Set by libavcodec, user can override.
2741 * - decoding: Set by libavcodec, user can override.
2742 */
2743 int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count);
096c87f6 2744
b1edfce0
AK
2745 /**
2746 * thread opaque
2747 * Can be used by execute() to store some per AVCodecContext stuff.
2748 * - encoding: set by execute()
2749 * - decoding: set by execute()
2750 */
2751 void *thread_opaque;
23940f14 2752
2aa72ecc 2753 /**
b1edfce0
AK
2754 * noise vs. sse weight for the nsse comparsion function
2755 * - encoding: Set by user.
2aa72ecc
JZ
2756 * - decoding: unused
2757 */
b1edfce0 2758 int nsse_weight;
cb2c971d
AJ
2759
2760 /**
b1edfce0
AK
2761 * profile
2762 * - encoding: Set by user.
2763 * - decoding: Set by libavcodec.
cb2c971d 2764 */
b1edfce0
AK
2765 int profile;
2766#define FF_PROFILE_UNKNOWN -99
2767#define FF_PROFILE_RESERVED -100
2768
2769#define FF_PROFILE_AAC_MAIN 0
2770#define FF_PROFILE_AAC_LOW 1
2771#define FF_PROFILE_AAC_SSR 2
2772#define FF_PROFILE_AAC_LTP 3
372597e5
MS
2773#define FF_PROFILE_AAC_HE 4
2774#define FF_PROFILE_AAC_HE_V2 28
2775#define FF_PROFILE_AAC_LD 22
2776#define FF_PROFILE_AAC_ELD 38
b1edfce0
AK
2777
2778#define FF_PROFILE_DTS 20
2779#define FF_PROFILE_DTS_ES 30
2780#define FF_PROFILE_DTS_96_24 40
2781#define FF_PROFILE_DTS_HD_HRA 50
2782#define FF_PROFILE_DTS_HD_MA 60
2783
2784#define FF_PROFILE_MPEG2_422 0
2785#define FF_PROFILE_MPEG2_HIGH 1
2786#define FF_PROFILE_MPEG2_SS 2
2787#define FF_PROFILE_MPEG2_SNR_SCALABLE 3
2788#define FF_PROFILE_MPEG2_MAIN 4
2789#define FF_PROFILE_MPEG2_SIMPLE 5
2790
2791#define FF_PROFILE_H264_CONSTRAINED (1<<9) // 8+1; constraint_set1_flag
2792#define FF_PROFILE_H264_INTRA (1<<11) // 8+3; constraint_set3_flag
2793
2794#define FF_PROFILE_H264_BASELINE 66
2795#define FF_PROFILE_H264_CONSTRAINED_BASELINE (66|FF_PROFILE_H264_CONSTRAINED)
2796#define FF_PROFILE_H264_MAIN 77
2797#define FF_PROFILE_H264_EXTENDED 88
2798#define FF_PROFILE_H264_HIGH 100
2799#define FF_PROFILE_H264_HIGH_10 110
2800#define FF_PROFILE_H264_HIGH_10_INTRA (110|FF_PROFILE_H264_INTRA)
2801#define FF_PROFILE_H264_HIGH_422 122
2802#define FF_PROFILE_H264_HIGH_422_INTRA (122|FF_PROFILE_H264_INTRA)
2803#define FF_PROFILE_H264_HIGH_444 144
2804#define FF_PROFILE_H264_HIGH_444_PREDICTIVE 244
2805#define FF_PROFILE_H264_HIGH_444_INTRA (244|FF_PROFILE_H264_INTRA)
2806#define FF_PROFILE_H264_CAVLC_444 44
2807
2808#define FF_PROFILE_VC1_SIMPLE 0
2809#define FF_PROFILE_VC1_MAIN 1
2810#define FF_PROFILE_VC1_COMPLEX 2
2811#define FF_PROFILE_VC1_ADVANCED 3
2812
2813#define FF_PROFILE_MPEG4_SIMPLE 0
2814#define FF_PROFILE_MPEG4_SIMPLE_SCALABLE 1
2815#define FF_PROFILE_MPEG4_CORE 2
2816#define FF_PROFILE_MPEG4_MAIN 3
2817#define FF_PROFILE_MPEG4_N_BIT 4
2818#define FF_PROFILE_MPEG4_SCALABLE_TEXTURE 5
2819#define FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION 6
2820#define FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE 7
2821#define FF_PROFILE_MPEG4_HYBRID 8
2822#define FF_PROFILE_MPEG4_ADVANCED_REAL_TIME 9
2823#define FF_PROFILE_MPEG4_CORE_SCALABLE 10
2824#define FF_PROFILE_MPEG4_ADVANCED_CODING 11
2825#define FF_PROFILE_MPEG4_ADVANCED_CORE 12
2826#define FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE 13
2827#define FF_PROFILE_MPEG4_SIMPLE_STUDIO 14
2828#define FF_PROFILE_MPEG4_ADVANCED_SIMPLE 15
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MN
2829
2830 /**
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AK
2831 * level
2832 * - encoding: Set by user.
2833 * - decoding: Set by libavcodec.
393cbb96 2834 */
b1edfce0
AK
2835 int level;
2836#define FF_LEVEL_UNKNOWN -99
37b00b47 2837
37b00b47 2838 /**
37b00b47 2839 *
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AK
2840 * - encoding: unused
2841 * - decoding: Set by user.
37b00b47 2842 */
b1edfce0 2843 enum AVDiscard skip_loop_filter;
37b00b47
AS
2844
2845 /**
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AK
2846 *
2847 * - encoding: unused
2848 * - decoding: Set by user.
37b00b47 2849 */
b1edfce0 2850 enum AVDiscard skip_idct;
37b00b47
AS
2851
2852 /**
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AK
2853 *
2854 * - encoding: unused
37b00b47
AS
2855 * - decoding: Set by user.
2856 */
b1edfce0 2857 enum AVDiscard skip_frame;
55bad0c6
CM
2858
2859 /**
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AK
2860 * Header containing style information for text subtitles.
2861 * For SUBTITLE_ASS subtitle type, it should contain the whole ASS
2862 * [Script Info] and [V4+ Styles] section, plus the [Events] line and
2863 * the Format line following. It shouldn't include any Dialogue line.
2864 * - encoding: Set/allocated/freed by user (before avcodec_open2())
2865 * - decoding: Set/allocated/freed by libavcodec (by avcodec_open2())
55bad0c6 2866 */
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AK
2867 uint8_t *subtitle_header;
2868 int subtitle_header_size;
34b47d7c
JR
2869
2870 /**
b1edfce0 2871 * Simulates errors in the bitstream to test error concealment.
34b47d7c 2872 * - encoding: Set by user.
b1edfce0 2873 * - decoding: unused
64150ff0 2874 */
b1edfce0 2875 int error_rate;
582f2311
DB
2876
2877 /**
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AK
2878 * Current packet as passed into the decoder, to avoid having
2879 * to pass the packet into every function. Currently only valid
2880 * inside lavc and get/release_buffer callbacks.
2881 * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
582f2311 2882 * - encoding: unused
582f2311 2883 */
b1edfce0 2884 AVPacket *pkt;
f3a29b75
JR
2885
2886 /**
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AK
2887 * VBV delay coded in the last frame (in periods of a 27 MHz clock).
2888 * Used for compliant TS muxing.
2889 * - encoding: Set by libavcodec.
2890 * - decoding: unused.
4bf3c8f2 2891 */
b1edfce0 2892 uint64_t vbv_delay;
de6d9b64
FB
2893} AVCodecContext;
2894
64863965 2895/**
060ec0a8
AH
2896 * AVProfile.
2897 */
2898typedef struct AVProfile {
2899 int profile;
2900 const char *name; ///< short name for the profile
2901} AVProfile;
2902
84626b36
AK
2903typedef struct AVCodecDefault AVCodecDefault;
2904
466b39ef
AK
2905struct AVSubtitle;
2906
060ec0a8 2907/**
64863965
MN
2908 * AVCodec.
2909 */
de6d9b64 2910typedef struct AVCodec {
6b0cdb6e
NG
2911 /**
2912 * Name of the codec implementation.
2913 * The name is globally unique among encoders and among decoders (but an
2914 * encoder and a decoder can share the same name).
2915 * This is the primary way to find a codec from the user perspective.
2916 */
18f77016 2917 const char *name;
f5f49a66
AK
2918 /**
2919 * Descriptive name for the codec, meant to be more human readable than name.
2920 * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
2921 */
2922 const char *long_name;
72415b2a 2923 enum AVMediaType type;
36ef5369 2924 enum AVCodecID id;
a2d11246
MN
2925 /**
2926 * Codec capabilities.
2927 * see CODEC_CAP_*
2928 */
bf89e6b1 2929 int capabilities;
716e31ea 2930 const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
1beb670a 2931 const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
3ade5d56 2932 const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
5d6e4c16 2933 const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
cc276c85 2934 const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
2bcbd984 2935 attribute_deprecated uint8_t max_lowres; ///< maximum value for lowres supported by the decoder
567ad0e3 2936 const AVClass *priv_class; ///< AVClass for the private context
060ec0a8 2937 const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
37b00b47 2938
f5f49a66
AK
2939 /*****************************************************************
2940 * No fields below this line are part of the public API. They
2941 * may not be used outside of libavcodec and can be changed and
2942 * removed at will.
2943 * New public fields should be added right above.
2944 *****************************************************************
2945 */
2946 int priv_data_size;
2947 struct AVCodec *next;
37b00b47 2948 /**
21a19b79 2949 * @name Frame-level threading support functions
37b00b47
AS
2950 * @{
2951 */
2952 /**
2953 * If defined, called on thread contexts when they are created.
2954 * If the codec allocates writable tables in init(), re-allocate them here.
2955 * priv_data will be set to a copy of the original.
2956 */
2957 int (*init_thread_copy)(AVCodecContext *);
2958 /**
2959 * Copy necessary context variables from a previous thread context to the current one.
2960 * If not defined, the next thread will start automatically; otherwise, the codec
2961 * must call ff_thread_finish_setup().
2962 *
2963 * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
2964 */
2965 int (*update_thread_context)(AVCodecContext *dst, const AVCodecContext *src);
2966 /** @} */
84626b36
AK
2967
2968 /**
2969 * Private codec-specific defaults.
2970 */
2971 const AVCodecDefault *defaults;
d97efd7f
AK
2972
2973 /**
2974 * Initialize codec static data, called from avcodec_register().
2975 */
2976 void (*init_static_data)(struct AVCodec *codec);
b2c75b6e 2977
f5f49a66 2978 int (*init)(AVCodecContext *);
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AK
2979 int (*encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size,
2980 const struct AVSubtitle *sub);
b2c75b6e
JR
2981 /**
2982 * Encode data to an AVPacket.
2983 *
2984 * @param avctx codec context
2985 * @param avpkt output AVPacket (may contain a user-provided buffer)
2986 * @param[in] frame AVFrame containing the raw data to be encoded
2987 * @param[out] got_packet_ptr encoder sets to 0 or 1 to indicate that a
2988 * non-empty packet was returned in avpkt.
2989 * @return 0 on success, negative error code on failure
2990 */
2991 int (*encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame,
2992 int *got_packet_ptr);
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AK
2993 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
2994 int (*close)(AVCodecContext *);
2995 /**
2996 * Flush buffers.
2997 * Will be called when seeking
2998 */
2999 void (*flush)(AVCodecContext *);
de6d9b64
FB
3000} AVCodec;
3001
97d96aaa 3002/**
40e5d31b
GB
3003 * AVHWAccel.
3004 */
3005typedef struct AVHWAccel {
3006 /**
3007 * Name of the hardware accelerated codec.
3008 * The name is globally unique among encoders and among decoders (but an
3009 * encoder and a decoder can share the same name).
3010 */
3011 const char *name;
3012
3013 /**
3014 * Type of codec implemented by the hardware accelerator.
3015 *
72415b2a 3016 * See AVMEDIA_TYPE_xxx
40e5d31b 3017 */
72415b2a 3018 enum AVMediaType type;
40e5d31b
GB
3019
3020 /**
3021 * Codec implemented by the hardware accelerator.
3022 *
36ef5369 3023 * See AV_CODEC_ID_xxx
40e5d31b 3024 */
36ef5369 3025 enum AVCodecID id;
40e5d31b
GB
3026
3027 /**
3028 * Supported pixel format.
3029 *
3030 * Only hardware accelerated formats are supported here.
3031 */
3032 enum PixelFormat pix_fmt;
3033
3034 /**
3035 * Hardware accelerated codec capabilities.
3036 * see FF_HWACCEL_CODEC_CAP_*
3037 */
3038 int capabilities;
3039
3040 struct AVHWAccel *next;
3041
3042 /**
3043 * Called at the beginning of each frame or field picture.
3044 *
3045 * Meaningful frame information (codec specific) is guaranteed to
3046 * be parsed at this point. This function is mandatory.
3047 *
bf7e799c 3048 * Note that buf can be NULL along with buf_size set to 0.
40e5d31b
GB
3049 * Otherwise, this means the whole frame is available at this point.
3050 *
3051 * @param avctx the codec context
3052 * @param buf the frame data buffer base
3053 * @param buf_size the size of the frame in bytes
3054 * @return zero if successful, a negative value otherwise
3055 */
3056 int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3057
3058 /**
3059 * Callback for each slice.
3060 *
3061 * Meaningful slice information (codec specific) is guaranteed to
3062 * be parsed at this point. This function is mandatory.
3063 *
3064 * @param avctx the codec context
3065 * @param buf the slice data buffer base
3066 * @param buf_size the size of the slice in bytes
3067 * @return zero if successful, a negative value otherwise
3068 */
3069 int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size);
3070
3071 /**
3072 * Called at the end of each frame or field picture.
3073 *
3074 * The whole picture is parsed at this point and can now be sent
3075 * to the hardware accelerator. This function is mandatory.
3076 *
3077 * @param avctx the codec context
3078 * @return zero if successful, a negative value otherwise
3079 */
3080 int (*end_frame)(AVCodecContext *avctx);
68e5d523
GB
3081
3082 /**
3083 * Size of HW accelerator private data.
3084 *
cd823ff9
GB
3085 * Private data is allocated with av_mallocz() before
3086 * AVCodecContext.get_buffer() and deallocated after
3087 * AVCodecContext.release_buffer().
68e5d523
GB
3088 */
3089 int priv_data_size;
40e5d31b
GB
3090} AVHWAccel;
3091
3092/**
6aadfbda
AK
3093 * @defgroup lavc_picture AVPicture
3094 *
3095 * Functions for working with AVPicture
3096 * @{
3097 */
3098
3099/**
d7425f59
MN
3100 * four components are given, that's all.
3101 * the last component is alpha
3102 */
de6d9b64 3103typedef struct AVPicture {
560f773c
JR
3104 uint8_t *data[AV_NUM_DATA_POINTERS];
3105 int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line
de6d9b64
FB
3106} AVPicture;
3107
6aadfbda
AK
3108/**
3109 * @}
3110 */
3111
63e4c8a6
AK
3112#define AVPALETTE_SIZE 1024
3113#define AVPALETTE_COUNT 256
ba118447 3114
c66216ed
MN
3115enum AVSubtitleType {
3116 SUBTITLE_NONE,
3117
3118 SUBTITLE_BITMAP, ///< A bitmap, pict will be set
3119
3120 /**
3121 * Plain text, the text field must be set by the decoder and is
3122 * authoritative. ass and pict fields may contain approximations.
3123 */
3124 SUBTITLE_TEXT,
3125
3126 /**
3127 * Formatted text, the ass field must be set by the decoder and is
3128 * authoritative. pict and text fields may contain approximations.
3129 */
3130 SUBTITLE_ASS,
3131};
3132
c6ec28b1 3133typedef struct AVSubtitleRect {
ebc466bb
MN
3134 int x; ///< top left corner of pict, undefined when pict is not set
3135 int y; ///< top left corner of pict, undefined when pict is not set
3136 int w; ///< width of pict, undefined when pict is not set
3137 int h; ///< height of pict, undefined when pict is not set
3138 int nb_colors; ///< number of colors in pict, undefined when pict is not set
25b4c651
MN
3139
3140 /**
3141 * data+linesize for the bitmap of this subtitle.
3142 * can be set for text/ass as well once they where rendered
3143 */
3144 AVPicture pict;
f656106f
MN
3145 enum AVSubtitleType type;
3146
3147 char *text; ///< 0 terminated plain UTF-8 text
3148
3149 /**
3150 * 0 terminated ASS/SSA compatible event line.
3151 * The pressentation of this is unaffected by the other values in this
3152 * struct.
3153 */
3154 char *ass;
c6ec28b1
MN
3155} AVSubtitleRect;
3156
3157typedef struct AVSubtitle {
3158 uint16_t format; /* 0 = graphics */
3159 uint32_t start_display_time; /* relative to packet pts, in ms */
3160 uint32_t end_display_time; /* relative to packet pts, in ms */
ebc466bb 3161 unsigned num_rects;
db4fac64 3162 AVSubtitleRect **rects;
4bbe788a 3163 int64_t pts; ///< Same as packet pts, in AV_TIME_BASE
240c1657
FB
3164} AVSubtitle;
3165
294b3a50
AK
3166/**
3167 * If c is NULL, returns the first registered codec,
3168 * if c is non-NULL, returns the next registered codec after c,
3169 * or NULL if c is the last one.
3170 */
0a0f19b5 3171AVCodec *av_codec_next(const AVCodec *c);
294b3a50
AK
3172
3173/**
3174 * Return the LIBAVCODEC_VERSION_INT constant.
3175 */
3176unsigned avcodec_version(void);
3177
3178/**
3179 * Return the libavcodec build-time configuration.
3180 */
3181const char *avcodec_configuration(void);
3182
3183/**
3184 * Return the libavcodec license.
3185 */
3186const char *avcodec_license(void);
3187
3188/**
3189 * Register the codec codec and initialize libavcodec.
3190 *
3191 * @warning either this function or avcodec_register_all() must be called
3192 * before any other libavcodec functions.
3193 *
3194 * @see avcodec_register_all()
3195 */
3196void avcodec_register(AVCodec *codec);
3197
3198/**
3199 * Register all the codecs, parsers and bitstream filters which were enabled at
3200 * configuration time. If you do not call this function you can select exactly
3201 * which formats you want to support, by using the individual registration
3202 * functions.
3203 *
3204 * @see avcodec_register
3205 * @see av_register_codec_parser
3206 * @see av_register_bitstream_filter
3207 */
3208void avcodec_register_all(void);
3209
3210/**
3211 * Allocate an AVCodecContext and set its fields to default values. The
3212 * resulting struct can be deallocated by calling avcodec_close() on it followed
3213 * by av_free().
3214 *
3215 * @param codec if non-NULL, allocate private data and initialize defaults
3216 * for the given codec. It is illegal to then call avcodec_open2()
3217 * with a different codec.
3218 * If NULL, then the codec-specific defaults won't be initialized,
3219 * which may result in suboptimal default settings (this is
3220 * important mainly for encoders, e.g. libx264).
3221 *
3222 * @return An AVCodecContext filled with default values or NULL on failure.
3223 * @see avcodec_get_context_defaults
3224 */
0a0f19b5 3225AVCodecContext *avcodec_alloc_context3(const AVCodec *codec);
294b3a50
AK
3226
3227/**
3228 * Set the fields of the given AVCodecContext to default values corresponding
3229 * to the given codec (defaults may be codec-dependent).
3230 *
3231 * Do not call this function if a non-NULL codec has been passed
3232 * to avcodec_alloc_context3() that allocated this AVCodecContext.
3233 * If codec is non-NULL, it is illegal to call avcodec_open2() with a
3234 * different codec on this AVCodecContext.
3235 */
0a0f19b5 3236int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec);
294b3a50
AK
3237
3238/**
3239 * Get the AVClass for AVCodecContext. It can be used in combination with
3240 * AV_OPT_SEARCH_FAKE_OBJ for examining options.
3241 *
3242 * @see av_opt_find().
3243 */
3244const AVClass *avcodec_get_class(void);
3245
3246/**
3247 * Copy the settings of the source AVCodecContext into the destination
3248 * AVCodecContext. The resulting destination codec context will be
3249 * unopened, i.e. you are required to call avcodec_open2() before you
3250 * can use this AVCodecContext to decode/encode video/audio data.
3251 *
3252 * @param dest target codec context, should be initialized with
3253 * avcodec_alloc_context3(), but otherwise uninitialized
3254 * @param src source codec context
3255 * @return AVERROR() on error (e.g. memory allocation error), 0 on success
3256 */
3257int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src);
3258
3259/**
3260 * Allocate an AVFrame and set its fields to default values. The resulting
a42aadab 3261 * struct must be freed using avcodec_free_frame().
294b3a50
AK
3262 *
3263 * @return An AVFrame filled with default values or NULL on failure.
3264 * @see avcodec_get_frame_defaults
3265 */
3266AVFrame *avcodec_alloc_frame(void);
3267
3268/**
3269 * Set the fields of the given AVFrame to default values.
3270 *
a83499b1 3271 * @param frame The AVFrame of which the fields should be set to default values.
294b3a50 3272 */
a83499b1 3273void avcodec_get_frame_defaults(AVFrame *frame);
294b3a50
AK
3274
3275/**
a42aadab
AK
3276 * Free the frame and any dynamically allocated objects in it,
3277 * e.g. extended_data.
3278 *
3279 * @param frame frame to be freed. The pointer will be set to NULL.
3280 *
3281 * @warning this function does NOT free the data buffers themselves
3282 * (it does not know how, since they might have been allocated with
3283 * a custom get_buffer()).
3284 */
3285void avcodec_free_frame(AVFrame **frame);
3286
3287/**
294b3a50
AK
3288 * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
3289 * function the context has to be allocated with avcodec_alloc_context3().
3290 *
3291 * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
3292 * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
3293 * retrieving a codec.
3294 *
3295 * @warning This function is not thread safe!
3296 *
3297 * @code
3298 * avcodec_register_all();
3299 * av_dict_set(&opts, "b", "2.5M", 0);
104e10fb 3300 * codec = avcodec_find_decoder(AV_CODEC_ID_H264);
294b3a50
AK
3301 * if (!codec)
3302 * exit(1);
3303 *
3304 * context = avcodec_alloc_context3(codec);
3305 *
3306 * if (avcodec_open2(context, codec, opts) < 0)
3307 * exit(1);
3308 * @endcode
3309 *
3310 * @param avctx The context to initialize.
3311 * @param codec The codec to open this context for. If a non-NULL codec has been
3312 * previously passed to avcodec_alloc_context3() or
3313 * avcodec_get_context_defaults3() for this context, then this
3314 * parameter MUST be either NULL or equal to the previously passed
3315 * codec.
3316 * @param options A dictionary filled with AVCodecContext and codec-private options.
3317 * On return this object will be filled with options that were not found.
3318 *
3319 * @return zero on success, a negative value on error
3320 * @see avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(),
3321 * av_dict_set(), av_opt_find().
3322 */
0a0f19b5 3323int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options);
294b3a50
AK
3324
3325/**
3326 * Close a given AVCodecContext and free all the data associated with it
3327 * (but not the AVCodecContext itself).
3328 *
3329 * Calling this function on an AVCodecContext that hasn't been opened will free
3330 * the codec-specific data allocated in avcodec_alloc_context3() /
3331 * avcodec_get_context_defaults3() with a non-NULL codec. Subsequent calls will
3332 * do nothing.
3333 */
3334int avcodec_close(AVCodecContext *avctx);
3335
3336/**
3337 * Free all allocated data in the given subtitle struct.
3338 *
3339 * @param sub AVSubtitle to free.
3340 */
3341void avsubtitle_free(AVSubtitle *sub);
3342
3343/**
3344 * @}
3345 */
3346
30f3f625
AK
3347/**
3348 * @addtogroup lavc_packet
3349 * @{
3350 */
cdd8930e 3351
80d403fc 3352/**
cdd8930e
TB
3353 * Default packet destructor.
3354 */
3355void av_destruct_packet(AVPacket *pkt);
3356
3357/**
3358 * Initialize optional fields of a packet with default values.
3359 *
7146177d
SE
3360 * Note, this does not touch the data and size members, which have to be
3361 * initialized separately.
3362 *
cdd8930e
TB
3363 * @param pkt packet
3364 */
3365void av_init_packet(AVPacket *pkt);
3366
3367/**
3368 * Allocate the payload of a packet and initialize its fields with
3369 * default values.
3370 *
3371 * @param pkt packet
3372 * @param size wanted payload size
3373 * @return 0 if OK, AVERROR_xxx otherwise
3374 */
3375int av_new_packet(AVPacket *pkt, int size);
3376
3377/**
feb993e5
RD
3378 * Reduce packet size, correctly zeroing padding
3379 *