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Diffstat (limited to 'apps/codecs/libcook/avcodec.h')
-rw-r--r-- | apps/codecs/libcook/avcodec.h | 3432 |
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diff --git a/apps/codecs/libcook/avcodec.h b/apps/codecs/libcook/avcodec.h new file mode 100644 index 0000000000..a520340162 --- /dev/null +++ b/apps/codecs/libcook/avcodec.h | |||
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1 | /* | ||
2 | * copyright (c) 2001 Fabrice Bellard | ||
3 | * | ||
4 | * This file is part of FFmpeg. | ||
5 | * | ||
6 | * FFmpeg is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU Lesser General Public | ||
8 | * License as published by the Free Software Foundation; either | ||
9 | * version 2.1 of the License, or (at your option) any later version. | ||
10 | * | ||
11 | * FFmpeg is distributed in the hope that it will be useful, | ||
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 | ||
17 | * License along with FFmpeg; if not, write to the Free Software | ||
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
19 | */ | ||
20 | |||
21 | #ifndef AVCODEC_AVCODEC_H | ||
22 | #define AVCODEC_AVCODEC_H | ||
23 | |||
24 | /** | ||
25 | * @file libavcodec/avcodec.h | ||
26 | * external API header | ||
27 | */ | ||
28 | |||
29 | #include <errno.h> | ||
30 | #include "libavutil/avutil.h" | ||
31 | |||
32 | #define LIBAVCODEC_VERSION_MAJOR 52 | ||
33 | #define LIBAVCODEC_VERSION_MINOR 22 | ||
34 | #define LIBAVCODEC_VERSION_MICRO 0 | ||
35 | |||
36 | #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ | ||
37 | LIBAVCODEC_VERSION_MINOR, \ | ||
38 | LIBAVCODEC_VERSION_MICRO) | ||
39 | #define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \ | ||
40 | LIBAVCODEC_VERSION_MINOR, \ | ||
41 | LIBAVCODEC_VERSION_MICRO) | ||
42 | #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT | ||
43 | |||
44 | #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION) | ||
45 | |||
46 | #define AV_NOPTS_VALUE INT64_C(0x8000000000000000) | ||
47 | #define AV_TIME_BASE 1000000 | ||
48 | #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE} | ||
49 | |||
50 | /** | ||
51 | * Identifies the syntax and semantics of the bitstream. | ||
52 | * The principle is roughly: | ||
53 | * Two decoders with the same ID can decode the same streams. | ||
54 | * Two encoders with the same ID can encode compatible streams. | ||
55 | * There may be slight deviations from the principle due to implementation | ||
56 | * details. | ||
57 | * | ||
58 | * If you add a codec ID to this list, add it so that | ||
59 | * 1. no value of a existing codec ID changes (that would break ABI), | ||
60 | * 2. it is as close as possible to similar codecs. | ||
61 | */ | ||
62 | enum CodecID { | ||
63 | CODEC_ID_NONE, | ||
64 | |||
65 | /* video codecs */ | ||
66 | CODEC_ID_MPEG1VIDEO, | ||
67 | CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding | ||
68 | CODEC_ID_MPEG2VIDEO_XVMC, | ||
69 | CODEC_ID_H261, | ||
70 | CODEC_ID_H263, | ||
71 | CODEC_ID_RV10, | ||
72 | CODEC_ID_RV20, | ||
73 | CODEC_ID_MJPEG, | ||
74 | CODEC_ID_MJPEGB, | ||
75 | CODEC_ID_LJPEG, | ||
76 | CODEC_ID_SP5X, | ||
77 | CODEC_ID_JPEGLS, | ||
78 | CODEC_ID_MPEG4, | ||
79 | CODEC_ID_RAWVIDEO, | ||
80 | CODEC_ID_MSMPEG4V1, | ||
81 | CODEC_ID_MSMPEG4V2, | ||
82 | CODEC_ID_MSMPEG4V3, | ||
83 | CODEC_ID_WMV1, | ||
84 | CODEC_ID_WMV2, | ||
85 | CODEC_ID_H263P, | ||
86 | CODEC_ID_H263I, | ||
87 | CODEC_ID_FLV1, | ||
88 | CODEC_ID_SVQ1, | ||
89 | CODEC_ID_SVQ3, | ||
90 | CODEC_ID_DVVIDEO, | ||
91 | CODEC_ID_HUFFYUV, | ||
92 | CODEC_ID_CYUV, | ||
93 | CODEC_ID_H264, | ||
94 | CODEC_ID_INDEO3, | ||
95 | CODEC_ID_VP3, | ||
96 | CODEC_ID_THEORA, | ||
97 | CODEC_ID_ASV1, | ||
98 | CODEC_ID_ASV2, | ||
99 | CODEC_ID_FFV1, | ||
100 | CODEC_ID_4XM, | ||
101 | CODEC_ID_VCR1, | ||
102 | CODEC_ID_CLJR, | ||
103 | CODEC_ID_MDEC, | ||
104 | CODEC_ID_ROQ, | ||
105 | CODEC_ID_INTERPLAY_VIDEO, | ||
106 | CODEC_ID_XAN_WC3, | ||
107 | CODEC_ID_XAN_WC4, | ||
108 | CODEC_ID_RPZA, | ||
109 | CODEC_ID_CINEPAK, | ||
110 | CODEC_ID_WS_VQA, | ||
111 | CODEC_ID_MSRLE, | ||
112 | CODEC_ID_MSVIDEO1, | ||
113 | CODEC_ID_IDCIN, | ||
114 | CODEC_ID_8BPS, | ||
115 | CODEC_ID_SMC, | ||
116 | CODEC_ID_FLIC, | ||
117 | CODEC_ID_TRUEMOTION1, | ||
118 | CODEC_ID_VMDVIDEO, | ||
119 | CODEC_ID_MSZH, | ||
120 | CODEC_ID_ZLIB, | ||
121 | CODEC_ID_QTRLE, | ||
122 | CODEC_ID_SNOW, | ||
123 | CODEC_ID_TSCC, | ||
124 | CODEC_ID_ULTI, | ||
125 | CODEC_ID_QDRAW, | ||
126 | CODEC_ID_VIXL, | ||
127 | CODEC_ID_QPEG, | ||
128 | CODEC_ID_XVID, | ||
129 | CODEC_ID_PNG, | ||
130 | CODEC_ID_PPM, | ||
131 | CODEC_ID_PBM, | ||
132 | CODEC_ID_PGM, | ||
133 | CODEC_ID_PGMYUV, | ||
134 | CODEC_ID_PAM, | ||
135 | CODEC_ID_FFVHUFF, | ||
136 | CODEC_ID_RV30, | ||
137 | CODEC_ID_RV40, | ||
138 | CODEC_ID_VC1, | ||
139 | CODEC_ID_WMV3, | ||
140 | CODEC_ID_LOCO, | ||
141 | CODEC_ID_WNV1, | ||
142 | CODEC_ID_AASC, | ||
143 | CODEC_ID_INDEO2, | ||
144 | CODEC_ID_FRAPS, | ||
145 | CODEC_ID_TRUEMOTION2, | ||
146 | CODEC_ID_BMP, | ||
147 | CODEC_ID_CSCD, | ||
148 | CODEC_ID_MMVIDEO, | ||
149 | CODEC_ID_ZMBV, | ||
150 | CODEC_ID_AVS, | ||
151 | CODEC_ID_SMACKVIDEO, | ||
152 | CODEC_ID_NUV, | ||
153 | CODEC_ID_KMVC, | ||
154 | CODEC_ID_FLASHSV, | ||
155 | CODEC_ID_CAVS, | ||
156 | CODEC_ID_JPEG2000, | ||
157 | CODEC_ID_VMNC, | ||
158 | CODEC_ID_VP5, | ||
159 | CODEC_ID_VP6, | ||
160 | CODEC_ID_VP6F, | ||
161 | CODEC_ID_TARGA, | ||
162 | CODEC_ID_DSICINVIDEO, | ||
163 | CODEC_ID_TIERTEXSEQVIDEO, | ||
164 | CODEC_ID_TIFF, | ||
165 | CODEC_ID_GIF, | ||
166 | CODEC_ID_FFH264, | ||
167 | CODEC_ID_DXA, | ||
168 | CODEC_ID_DNXHD, | ||
169 | CODEC_ID_THP, | ||
170 | CODEC_ID_SGI, | ||
171 | CODEC_ID_C93, | ||
172 | CODEC_ID_BETHSOFTVID, | ||
173 | CODEC_ID_PTX, | ||
174 | CODEC_ID_TXD, | ||
175 | CODEC_ID_VP6A, | ||
176 | CODEC_ID_AMV, | ||
177 | CODEC_ID_VB, | ||
178 | CODEC_ID_PCX, | ||
179 | CODEC_ID_SUNRAST, | ||
180 | CODEC_ID_INDEO4, | ||
181 | CODEC_ID_INDEO5, | ||
182 | CODEC_ID_MIMIC, | ||
183 | CODEC_ID_RL2, | ||
184 | CODEC_ID_8SVX_EXP, | ||
185 | CODEC_ID_8SVX_FIB, | ||
186 | CODEC_ID_ESCAPE124, | ||
187 | CODEC_ID_DIRAC, | ||
188 | CODEC_ID_BFI, | ||
189 | CODEC_ID_CMV, | ||
190 | CODEC_ID_MOTIONPIXELS, | ||
191 | CODEC_ID_TGV, | ||
192 | CODEC_ID_TGQ, | ||
193 | CODEC_ID_TQI, | ||
194 | |||
195 | /* various PCM "codecs" */ | ||
196 | CODEC_ID_PCM_S16LE= 0x10000, | ||
197 | CODEC_ID_PCM_S16BE, | ||
198 | CODEC_ID_PCM_U16LE, | ||
199 | CODEC_ID_PCM_U16BE, | ||
200 | CODEC_ID_PCM_S8, | ||
201 | CODEC_ID_PCM_U8, | ||
202 | CODEC_ID_PCM_MULAW, | ||
203 | CODEC_ID_PCM_ALAW, | ||
204 | CODEC_ID_PCM_S32LE, | ||
205 | CODEC_ID_PCM_S32BE, | ||
206 | CODEC_ID_PCM_U32LE, | ||
207 | CODEC_ID_PCM_U32BE, | ||
208 | CODEC_ID_PCM_S24LE, | ||
209 | CODEC_ID_PCM_S24BE, | ||
210 | CODEC_ID_PCM_U24LE, | ||
211 | CODEC_ID_PCM_U24BE, | ||
212 | CODEC_ID_PCM_S24DAUD, | ||
213 | CODEC_ID_PCM_ZORK, | ||
214 | CODEC_ID_PCM_S16LE_PLANAR, | ||
215 | CODEC_ID_PCM_DVD, | ||
216 | CODEC_ID_PCM_F32BE, | ||
217 | CODEC_ID_PCM_F32LE, | ||
218 | CODEC_ID_PCM_F64BE, | ||
219 | CODEC_ID_PCM_F64LE, | ||
220 | |||
221 | /* various ADPCM codecs */ | ||
222 | CODEC_ID_ADPCM_IMA_QT= 0x11000, | ||
223 | CODEC_ID_ADPCM_IMA_WAV, | ||
224 | CODEC_ID_ADPCM_IMA_DK3, | ||
225 | CODEC_ID_ADPCM_IMA_DK4, | ||
226 | CODEC_ID_ADPCM_IMA_WS, | ||
227 | CODEC_ID_ADPCM_IMA_SMJPEG, | ||
228 | CODEC_ID_ADPCM_MS, | ||
229 | CODEC_ID_ADPCM_4XM, | ||
230 | CODEC_ID_ADPCM_XA, | ||
231 | CODEC_ID_ADPCM_ADX, | ||
232 | CODEC_ID_ADPCM_EA, | ||
233 | CODEC_ID_ADPCM_G726, | ||
234 | CODEC_ID_ADPCM_CT, | ||
235 | CODEC_ID_ADPCM_SWF, | ||
236 | CODEC_ID_ADPCM_YAMAHA, | ||
237 | CODEC_ID_ADPCM_SBPRO_4, | ||
238 | CODEC_ID_ADPCM_SBPRO_3, | ||
239 | CODEC_ID_ADPCM_SBPRO_2, | ||
240 | CODEC_ID_ADPCM_THP, | ||
241 | CODEC_ID_ADPCM_IMA_AMV, | ||
242 | CODEC_ID_ADPCM_EA_R1, | ||
243 | CODEC_ID_ADPCM_EA_R3, | ||
244 | CODEC_ID_ADPCM_EA_R2, | ||
245 | CODEC_ID_ADPCM_IMA_EA_SEAD, | ||
246 | CODEC_ID_ADPCM_IMA_EA_EACS, | ||
247 | CODEC_ID_ADPCM_EA_XAS, | ||
248 | CODEC_ID_ADPCM_EA_MAXIS_XA, | ||
249 | CODEC_ID_ADPCM_IMA_ISS, | ||
250 | |||
251 | /* AMR */ | ||
252 | CODEC_ID_AMR_NB= 0x12000, | ||
253 | CODEC_ID_AMR_WB, | ||
254 | |||
255 | /* RealAudio codecs*/ | ||
256 | CODEC_ID_RA_144= 0x13000, | ||
257 | CODEC_ID_RA_288, | ||
258 | |||
259 | /* various DPCM codecs */ | ||
260 | CODEC_ID_ROQ_DPCM= 0x14000, | ||
261 | CODEC_ID_INTERPLAY_DPCM, | ||
262 | CODEC_ID_XAN_DPCM, | ||
263 | CODEC_ID_SOL_DPCM, | ||
264 | |||
265 | /* audio codecs */ | ||
266 | CODEC_ID_MP2= 0x15000, | ||
267 | CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 | ||
268 | CODEC_ID_AAC, | ||
269 | CODEC_ID_AC3, | ||
270 | CODEC_ID_DTS, | ||
271 | CODEC_ID_VORBIS, | ||
272 | CODEC_ID_DVAUDIO, | ||
273 | CODEC_ID_WMAV1, | ||
274 | CODEC_ID_WMAV2, | ||
275 | CODEC_ID_MACE3, | ||
276 | CODEC_ID_MACE6, | ||
277 | CODEC_ID_VMDAUDIO, | ||
278 | CODEC_ID_SONIC, | ||
279 | CODEC_ID_SONIC_LS, | ||
280 | CODEC_ID_FLAC, | ||
281 | CODEC_ID_MP3ADU, | ||
282 | CODEC_ID_MP3ON4, | ||
283 | CODEC_ID_SHORTEN, | ||
284 | CODEC_ID_ALAC, | ||
285 | CODEC_ID_WESTWOOD_SND1, | ||
286 | CODEC_ID_GSM, ///< as in Berlin toast format | ||
287 | CODEC_ID_QDM2, | ||
288 | CODEC_ID_COOK, | ||
289 | CODEC_ID_TRUESPEECH, | ||
290 | CODEC_ID_TTA, | ||
291 | CODEC_ID_SMACKAUDIO, | ||
292 | CODEC_ID_QCELP, | ||
293 | CODEC_ID_WAVPACK, | ||
294 | CODEC_ID_DSICINAUDIO, | ||
295 | CODEC_ID_IMC, | ||
296 | CODEC_ID_MUSEPACK7, | ||
297 | CODEC_ID_MLP, | ||
298 | CODEC_ID_GSM_MS, /* as found in WAV */ | ||
299 | CODEC_ID_ATRAC3, | ||
300 | CODEC_ID_VOXWARE, | ||
301 | CODEC_ID_APE, | ||
302 | CODEC_ID_NELLYMOSER, | ||
303 | CODEC_ID_MUSEPACK8, | ||
304 | CODEC_ID_SPEEX, | ||
305 | CODEC_ID_WMAVOICE, | ||
306 | CODEC_ID_WMAPRO, | ||
307 | CODEC_ID_WMALOSSLESS, | ||
308 | CODEC_ID_ATRAC3P, | ||
309 | CODEC_ID_EAC3, | ||
310 | CODEC_ID_SIPR, | ||
311 | CODEC_ID_MP1, | ||
312 | CODEC_ID_TWINVQ, | ||
313 | CODEC_ID_TRUEHD, | ||
314 | |||
315 | /* subtitle codecs */ | ||
316 | CODEC_ID_DVD_SUBTITLE= 0x17000, | ||
317 | CODEC_ID_DVB_SUBTITLE, | ||
318 | CODEC_ID_TEXT, ///< raw UTF-8 text | ||
319 | CODEC_ID_XSUB, | ||
320 | CODEC_ID_SSA, | ||
321 | CODEC_ID_MOV_TEXT, | ||
322 | |||
323 | /* other specific kind of codecs (generally used for attachments) */ | ||
324 | CODEC_ID_TTF= 0x18000, | ||
325 | |||
326 | CODEC_ID_PROBE= 0x19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it | ||
327 | |||
328 | CODEC_ID_MPEG2TS= 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS | ||
329 | * stream (only used by libavformat) */ | ||
330 | }; | ||
331 | |||
332 | enum CodecType { | ||
333 | CODEC_TYPE_UNKNOWN = -1, | ||
334 | CODEC_TYPE_VIDEO, | ||
335 | CODEC_TYPE_AUDIO, | ||
336 | CODEC_TYPE_DATA, | ||
337 | CODEC_TYPE_SUBTITLE, | ||
338 | CODEC_TYPE_ATTACHMENT, | ||
339 | CODEC_TYPE_NB | ||
340 | }; | ||
341 | |||
342 | /** | ||
343 | * all in native-endian format | ||
344 | */ | ||
345 | enum SampleFormat { | ||
346 | SAMPLE_FMT_NONE = -1, | ||
347 | SAMPLE_FMT_U8, ///< unsigned 8 bits | ||
348 | SAMPLE_FMT_S16, ///< signed 16 bits | ||
349 | SAMPLE_FMT_S32, ///< signed 32 bits | ||
350 | SAMPLE_FMT_FLT, ///< float | ||
351 | SAMPLE_FMT_DBL, ///< double | ||
352 | SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec | ||
353 | }; | ||
354 | |||
355 | /* Audio channel masks */ | ||
356 | #define CH_FRONT_LEFT 0x00000001 | ||
357 | #define CH_FRONT_RIGHT 0x00000002 | ||
358 | #define CH_FRONT_CENTER 0x00000004 | ||
359 | #define CH_LOW_FREQUENCY 0x00000008 | ||
360 | #define CH_BACK_LEFT 0x00000010 | ||
361 | #define CH_BACK_RIGHT 0x00000020 | ||
362 | #define CH_FRONT_LEFT_OF_CENTER 0x00000040 | ||
363 | #define CH_FRONT_RIGHT_OF_CENTER 0x00000080 | ||
364 | #define CH_BACK_CENTER 0x00000100 | ||
365 | #define CH_SIDE_LEFT 0x00000200 | ||
366 | #define CH_SIDE_RIGHT 0x00000400 | ||
367 | #define CH_TOP_CENTER 0x00000800 | ||
368 | #define CH_TOP_FRONT_LEFT 0x00001000 | ||
369 | #define CH_TOP_FRONT_CENTER 0x00002000 | ||
370 | #define CH_TOP_FRONT_RIGHT 0x00004000 | ||
371 | #define CH_TOP_BACK_LEFT 0x00008000 | ||
372 | #define CH_TOP_BACK_CENTER 0x00010000 | ||
373 | #define CH_TOP_BACK_RIGHT 0x00020000 | ||
374 | #define CH_STEREO_LEFT 0x20000000 ///< Stereo downmix. | ||
375 | #define CH_STEREO_RIGHT 0x40000000 ///< See CH_STEREO_LEFT. | ||
376 | |||
377 | /* Audio channel convenience macros */ | ||
378 | #define CH_LAYOUT_MONO (CH_FRONT_CENTER) | ||
379 | #define CH_LAYOUT_STEREO (CH_FRONT_LEFT|CH_FRONT_RIGHT) | ||
380 | #define CH_LAYOUT_SURROUND (CH_LAYOUT_STEREO|CH_FRONT_CENTER) | ||
381 | #define CH_LAYOUT_QUAD (CH_LAYOUT_STEREO|CH_BACK_LEFT|CH_BACK_RIGHT) | ||
382 | #define CH_LAYOUT_5POINT0 (CH_LAYOUT_SURROUND|CH_SIDE_LEFT|CH_SIDE_RIGHT) | ||
383 | #define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY) | ||
384 | #define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT) | ||
385 | #define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_SURROUND|CH_LOW_FREQUENCY|\ | ||
386 | CH_BACK_LEFT|CH_BACK_RIGHT|\ | ||
387 | CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER) | ||
388 | #define CH_LAYOUT_STEREO_DOWNMIX (CH_STEREO_LEFT|CH_STEREO_RIGHT) | ||
389 | |||
390 | /* in bytes */ | ||
391 | #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio | ||
392 | |||
393 | /** | ||
394 | * Required number of additionally allocated bytes at the end of the input bitstream for decoding. | ||
395 | * This is mainly needed because some optimized bitstream readers read | ||
396 | * 32 or 64 bit at once and could read over the end.<br> | ||
397 | * Note: If the first 23 bits of the additional bytes are not 0, then damaged | ||
398 | * MPEG bitstreams could cause overread and segfault. | ||
399 | */ | ||
400 | #define FF_INPUT_BUFFER_PADDING_SIZE 8 | ||
401 | |||
402 | /** | ||
403 | * minimum encoding buffer size | ||
404 | * Used to avoid some checks during header writing. | ||
405 | */ | ||
406 | #define FF_MIN_BUFFER_SIZE 16384 | ||
407 | |||
408 | |||
409 | /** | ||
410 | * motion estimation type. | ||
411 | */ | ||
412 | enum Motion_Est_ID { | ||
413 | ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed | ||
414 | ME_FULL, | ||
415 | ME_LOG, | ||
416 | ME_PHODS, | ||
417 | ME_EPZS, ///< enhanced predictive zonal search | ||
418 | ME_X1, ///< reserved for experiments | ||
419 | ME_HEX, ///< hexagon based search | ||
420 | ME_UMH, ///< uneven multi-hexagon search | ||
421 | ME_ITER, ///< iterative search | ||
422 | ME_TESA, ///< transformed exhaustive search algorithm | ||
423 | }; | ||
424 | |||
425 | enum AVDiscard{ | ||
426 | /* We leave some space between them for extensions (drop some | ||
427 | * keyframes for intra-only or drop just some bidir frames). */ | ||
428 | AVDISCARD_NONE =-16, ///< discard nothing | ||
429 | AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi | ||
430 | AVDISCARD_NONREF = 8, ///< discard all non reference | ||
431 | AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames | ||
432 | AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes | ||
433 | AVDISCARD_ALL = 48, ///< discard all | ||
434 | }; | ||
435 | |||
436 | typedef struct RcOverride{ | ||
437 | int start_frame; | ||
438 | int end_frame; | ||
439 | int qscale; // If this is 0 then quality_factor will be used instead. | ||
440 | float quality_factor; | ||
441 | } RcOverride; | ||
442 | |||
443 | #define FF_MAX_B_FRAMES 16 | ||
444 | |||
445 | /* encoding support | ||
446 | These flags can be passed in AVCodecContext.flags before initialization. | ||
447 | Note: Not everything is supported yet. | ||
448 | */ | ||
449 | |||
450 | #define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale. | ||
451 | #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263. | ||
452 | #define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC. | ||
453 | #define CODEC_FLAG_GMC 0x0020 ///< Use GMC. | ||
454 | #define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>. | ||
455 | #define CODEC_FLAG_PART 0x0080 ///< Use data partitioning. | ||
456 | /** | ||
457 | * The parent program guarantees that the input for B-frames containing | ||
458 | * streams is not written to for at least s->max_b_frames+1 frames, if | ||
459 | * this is not set the input will be copied. | ||
460 | */ | ||
461 | #define CODEC_FLAG_INPUT_PRESERVED 0x0100 | ||
462 | #define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode. | ||
463 | #define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode. | ||
464 | #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG). | ||
465 | #define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale. | ||
466 | #define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges. | ||
467 | #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding. | ||
468 | #define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random | ||
469 | location instead of only at frame boundaries. */ | ||
470 | #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization. | ||
471 | #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT. | ||
472 | #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay. | ||
473 | #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan. | ||
474 | #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe. | ||
475 | #define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT). | ||
476 | /* Fx : Flag for h263+ extra options */ | ||
477 | #define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction | ||
478 | #define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector | ||
479 | #define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp. | ||
480 | #define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon. | ||
481 | #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC | ||
482 | #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC | ||
483 | #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter | ||
484 | #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000 | ||
485 | #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation | ||
486 | #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data. | ||
487 | #define CODEC_FLAG_CLOSED_GOP 0x80000000 | ||
488 | #define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks. | ||
489 | #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size. | ||
490 | #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding. | ||
491 | #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata. | ||
492 | #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references. | ||
493 | #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames | ||
494 | #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock | ||
495 | #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform | ||
496 | #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip | ||
497 | #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters | ||
498 | #define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization | ||
499 | #define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table. | ||
500 | #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC). | ||
501 | #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. | ||
502 | #define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping | ||
503 | #define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. | ||
504 | #define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer. | ||
505 | #define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible | ||
506 | |||
507 | /* Unsupported options : | ||
508 | * Syntax Arithmetic coding (SAC) | ||
509 | * Reference Picture Selection | ||
510 | * Independent Segment Decoding */ | ||
511 | /* /Fx */ | ||
512 | /* codec capabilities */ | ||
513 | |||
514 | #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback. | ||
515 | /** | ||
516 | * Codec uses get_buffer() for allocating buffers. | ||
517 | * direct rendering method 1 | ||
518 | */ | ||
519 | #define CODEC_CAP_DR1 0x0002 | ||
520 | /* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */ | ||
521 | #define CODEC_CAP_PARSE_ONLY 0x0004 | ||
522 | #define CODEC_CAP_TRUNCATED 0x0008 | ||
523 | /* Codec can export data for HW decoding (XvMC). */ | ||
524 | #define CODEC_CAP_HWACCEL 0x0010 | ||
525 | /** | ||
526 | * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data. | ||
527 | * If this is not set, the codec is guaranteed to never be fed with NULL data. | ||
528 | */ | ||
529 | #define CODEC_CAP_DELAY 0x0020 | ||
530 | /** | ||
531 | * Codec can be fed a final frame with a smaller size. | ||
532 | * This can be used to prevent truncation of the last audio samples. | ||
533 | */ | ||
534 | #define CODEC_CAP_SMALL_LAST_FRAME 0x0040 | ||
535 | /** | ||
536 | * Codec can export data for HW decoding (VDPAU). | ||
537 | */ | ||
538 | #define CODEC_CAP_HWACCEL_VDPAU 0x0080 | ||
539 | |||
540 | //The following defines may change, don't expect compatibility if you use them. | ||
541 | #define MB_TYPE_INTRA4x4 0x0001 | ||
542 | #define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific | ||
543 | #define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific | ||
544 | #define MB_TYPE_16x16 0x0008 | ||
545 | #define MB_TYPE_16x8 0x0010 | ||
546 | #define MB_TYPE_8x16 0x0020 | ||
547 | #define MB_TYPE_8x8 0x0040 | ||
548 | #define MB_TYPE_INTERLACED 0x0080 | ||
549 | #define MB_TYPE_DIRECT2 0x0100 //FIXME | ||
550 | #define MB_TYPE_ACPRED 0x0200 | ||
551 | #define MB_TYPE_GMC 0x0400 | ||
552 | #define MB_TYPE_SKIP 0x0800 | ||
553 | #define MB_TYPE_P0L0 0x1000 | ||
554 | #define MB_TYPE_P1L0 0x2000 | ||
555 | #define MB_TYPE_P0L1 0x4000 | ||
556 | #define MB_TYPE_P1L1 0x8000 | ||
557 | #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) | ||
558 | #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) | ||
559 | #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) | ||
560 | #define MB_TYPE_QUANT 0x00010000 | ||
561 | #define MB_TYPE_CBP 0x00020000 | ||
562 | //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) | ||
563 | |||
564 | /** | ||
565 | * Pan Scan area. | ||
566 | * This specifies the area which should be displayed. | ||
567 | * Note there may be multiple such areas for one frame. | ||
568 | */ | ||
569 | typedef struct AVPanScan{ | ||
570 | /** | ||
571 | * id | ||
572 | * - encoding: Set by user. | ||
573 | * - decoding: Set by libavcodec. | ||
574 | */ | ||
575 | int id; | ||
576 | |||
577 | /** | ||
578 | * width and height in 1/16 pel | ||
579 | * - encoding: Set by user. | ||
580 | * - decoding: Set by libavcodec. | ||
581 | */ | ||
582 | int width; | ||
583 | int height; | ||
584 | |||
585 | /** | ||
586 | * position of the top left corner in 1/16 pel for up to 3 fields/frames | ||
587 | * - encoding: Set by user. | ||
588 | * - decoding: Set by libavcodec. | ||
589 | */ | ||
590 | int16_t position[3][2]; | ||
591 | }AVPanScan; | ||
592 | |||
593 | #define FF_COMMON_FRAME \ | ||
594 | /**\ | ||
595 | * pointer to the picture planes.\ | ||
596 | * This might be different from the first allocated byte\ | ||
597 | * - encoding: \ | ||
598 | * - decoding: \ | ||
599 | */\ | ||
600 | uint8_t *data[4];\ | ||
601 | int linesize[4];\ | ||
602 | /**\ | ||
603 | * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.\ | ||
604 | * This isn't used by libavcodec unless the default get/release_buffer() is used.\ | ||
605 | * - encoding: \ | ||
606 | * - decoding: \ | ||
607 | */\ | ||
608 | uint8_t *base[4];\ | ||
609 | /**\ | ||
610 | * 1 -> keyframe, 0-> not\ | ||
611 | * - encoding: Set by libavcodec.\ | ||
612 | * - decoding: Set by libavcodec.\ | ||
613 | */\ | ||
614 | int key_frame;\ | ||
615 | \ | ||
616 | /**\ | ||
617 | * Picture type of the frame, see ?_TYPE below.\ | ||
618 | * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\ | ||
619 | * - decoding: Set by libavcodec.\ | ||
620 | */\ | ||
621 | int pict_type;\ | ||
622 | \ | ||
623 | /**\ | ||
624 | * presentation timestamp in time_base units (time when frame should be shown to user)\ | ||
625 | * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.\ | ||
626 | * - encoding: MUST be set by user.\ | ||
627 | * - decoding: Set by libavcodec.\ | ||
628 | */\ | ||
629 | int64_t pts;\ | ||
630 | \ | ||
631 | /**\ | ||
632 | * picture number in bitstream order\ | ||
633 | * - encoding: set by\ | ||
634 | * - decoding: Set by libavcodec.\ | ||
635 | */\ | ||
636 | int coded_picture_number;\ | ||
637 | /**\ | ||
638 | * picture number in display order\ | ||
639 | * - encoding: set by\ | ||
640 | * - decoding: Set by libavcodec.\ | ||
641 | */\ | ||
642 | int display_picture_number;\ | ||
643 | \ | ||
644 | /**\ | ||
645 | * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \ | ||
646 | * - encoding: Set by libavcodec. for coded_picture (and set by user for input).\ | ||
647 | * - decoding: Set by libavcodec.\ | ||
648 | */\ | ||
649 | int quality; \ | ||
650 | \ | ||
651 | /**\ | ||
652 | * buffer age (1->was last buffer and dint change, 2->..., ...).\ | ||
653 | * Set to INT_MAX if the buffer has not been used yet.\ | ||
654 | * - encoding: unused\ | ||
655 | * - decoding: MUST be set by get_buffer().\ | ||
656 | */\ | ||
657 | int age;\ | ||
658 | \ | ||
659 | /**\ | ||
660 | * is this picture used as reference\ | ||
661 | * The values for this are the same as the MpegEncContext.picture_structure\ | ||
662 | * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\ | ||
663 | * Set to 4 for delayed, non-reference frames.\ | ||
664 | * - encoding: unused\ | ||
665 | * - decoding: Set by libavcodec. (before get_buffer() call)).\ | ||
666 | */\ | ||
667 | int reference;\ | ||
668 | \ | ||
669 | /**\ | ||
670 | * QP table\ | ||
671 | * - encoding: unused\ | ||
672 | * - decoding: Set by libavcodec.\ | ||
673 | */\ | ||
674 | int8_t *qscale_table;\ | ||
675 | /**\ | ||
676 | * QP store stride\ | ||
677 | * - encoding: unused\ | ||
678 | * - decoding: Set by libavcodec.\ | ||
679 | */\ | ||
680 | int qstride;\ | ||
681 | \ | ||
682 | /**\ | ||
683 | * mbskip_table[mb]>=1 if MB didn't change\ | ||
684 | * stride= mb_width = (width+15)>>4\ | ||
685 | * - encoding: unused\ | ||
686 | * - decoding: Set by libavcodec.\ | ||
687 | */\ | ||
688 | uint8_t *mbskip_table;\ | ||
689 | \ | ||
690 | /**\ | ||
691 | * motion vector table\ | ||
692 | * @code\ | ||
693 | * example:\ | ||
694 | * int mv_sample_log2= 4 - motion_subsample_log2;\ | ||
695 | * int mb_width= (width+15)>>4;\ | ||
696 | * int mv_stride= (mb_width << mv_sample_log2) + 1;\ | ||
697 | * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\ | ||
698 | * @endcode\ | ||
699 | * - encoding: Set by user.\ | ||
700 | * - decoding: Set by libavcodec.\ | ||
701 | */\ | ||
702 | int16_t (*motion_val[2])[2];\ | ||
703 | \ | ||
704 | /**\ | ||
705 | * macroblock type table\ | ||
706 | * mb_type_base + mb_width + 2\ | ||
707 | * - encoding: Set by user.\ | ||
708 | * - decoding: Set by libavcodec.\ | ||
709 | */\ | ||
710 | uint32_t *mb_type;\ | ||
711 | \ | ||
712 | /**\ | ||
713 | * log2 of the size of the block which a single vector in motion_val represents: \ | ||
714 | * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\ | ||
715 | * - encoding: unused\ | ||
716 | * - decoding: Set by libavcodec.\ | ||
717 | */\ | ||
718 | uint8_t motion_subsample_log2;\ | ||
719 | \ | ||
720 | /**\ | ||
721 | * for some private data of the user\ | ||
722 | * - encoding: unused\ | ||
723 | * - decoding: Set by user.\ | ||
724 | */\ | ||
725 | void *opaque;\ | ||
726 | \ | ||
727 | /**\ | ||
728 | * error\ | ||
729 | * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\ | ||
730 | * - decoding: unused\ | ||
731 | */\ | ||
732 | uint64_t error[4];\ | ||
733 | \ | ||
734 | /**\ | ||
735 | * type of the buffer (to keep track of who has to deallocate data[*])\ | ||
736 | * - encoding: Set by the one who allocates it.\ | ||
737 | * - decoding: Set by the one who allocates it.\ | ||
738 | * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.\ | ||
739 | */\ | ||
740 | int type;\ | ||
741 | \ | ||
742 | /**\ | ||
743 | * When decoding, this signals how much the picture must be delayed.\ | ||
744 | * extra_delay = repeat_pict / (2*fps)\ | ||
745 | * - encoding: unused\ | ||
746 | * - decoding: Set by libavcodec.\ | ||
747 | */\ | ||
748 | int repeat_pict;\ | ||
749 | \ | ||
750 | /**\ | ||
751 | * \ | ||
752 | */\ | ||
753 | int qscale_type;\ | ||
754 | \ | ||
755 | /**\ | ||
756 | * The content of the picture is interlaced.\ | ||
757 | * - encoding: Set by user.\ | ||
758 | * - decoding: Set by libavcodec. (default 0)\ | ||
759 | */\ | ||
760 | int interlaced_frame;\ | ||
761 | \ | ||
762 | /**\ | ||
763 | * If the content is interlaced, is top field displayed first.\ | ||
764 | * - encoding: Set by user.\ | ||
765 | * - decoding: Set by libavcodec.\ | ||
766 | */\ | ||
767 | int top_field_first;\ | ||
768 | \ | ||
769 | /**\ | ||
770 | * Pan scan.\ | ||
771 | * - encoding: Set by user.\ | ||
772 | * - decoding: Set by libavcodec.\ | ||
773 | */\ | ||
774 | AVPanScan *pan_scan;\ | ||
775 | \ | ||
776 | /**\ | ||
777 | * Tell user application that palette has changed from previous frame.\ | ||
778 | * - encoding: ??? (no palette-enabled encoder yet)\ | ||
779 | * - decoding: Set by libavcodec. (default 0).\ | ||
780 | */\ | ||
781 | int palette_has_changed;\ | ||
782 | \ | ||
783 | /**\ | ||
784 | * codec suggestion on buffer type if != 0\ | ||
785 | * - encoding: unused\ | ||
786 | * - decoding: Set by libavcodec. (before get_buffer() call)).\ | ||
787 | */\ | ||
788 | int buffer_hints;\ | ||
789 | \ | ||
790 | /**\ | ||
791 | * DCT coefficients\ | ||
792 | * - encoding: unused\ | ||
793 | * - decoding: Set by libavcodec.\ | ||
794 | */\ | ||
795 | short *dct_coeff;\ | ||
796 | \ | ||
797 | /**\ | ||
798 | * motion referece frame index\ | ||
799 | * - encoding: Set by user.\ | ||
800 | * - decoding: Set by libavcodec.\ | ||
801 | */\ | ||
802 | int8_t *ref_index[2];\ | ||
803 | \ | ||
804 | /**\ | ||
805 | * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque\ | ||
806 | * output in AVFrame.reordered_opaque\ | ||
807 | * - encoding: unused\ | ||
808 | * - decoding: Read by user.\ | ||
809 | */\ | ||
810 | int64_t reordered_opaque;\ | ||
811 | \ | ||
812 | /**\ | ||
813 | * hardware accelerator private data (FFmpeg allocated)\ | ||
814 | * - encoding: unused\ | ||
815 | * - decoding: Set by libavcodec\ | ||
816 | */\ | ||
817 | void *hwaccel_picture_private;\ | ||
818 | |||
819 | |||
820 | #define FF_QSCALE_TYPE_MPEG1 0 | ||
821 | #define FF_QSCALE_TYPE_MPEG2 1 | ||
822 | #define FF_QSCALE_TYPE_H264 2 | ||
823 | |||
824 | #define FF_BUFFER_TYPE_INTERNAL 1 | ||
825 | #define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user) | ||
826 | #define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared. | ||
827 | #define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything. | ||
828 | |||
829 | |||
830 | #define FF_I_TYPE 1 ///< Intra | ||
831 | #define FF_P_TYPE 2 ///< Predicted | ||
832 | #define FF_B_TYPE 3 ///< Bi-dir predicted | ||
833 | #define FF_S_TYPE 4 ///< S(GMC)-VOP MPEG4 | ||
834 | #define FF_SI_TYPE 5 ///< Switching Intra | ||
835 | #define FF_SP_TYPE 6 ///< Switching Predicted | ||
836 | #define FF_BI_TYPE 7 | ||
837 | |||
838 | #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore). | ||
839 | #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer. | ||
840 | #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content. | ||
841 | #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update). | ||
842 | |||
843 | /** | ||
844 | * Audio Video Frame. | ||
845 | * New fields can be added to the end of FF_COMMON_FRAME with minor version | ||
846 | * bumps. | ||
847 | * Removal, reordering and changes to existing fields require a major | ||
848 | * version bump. No fields should be added into AVFrame before or after | ||
849 | * FF_COMMON_FRAME! | ||
850 | * sizeof(AVFrame) must not be used outside libav*. | ||
851 | */ | ||
852 | typedef struct AVFrame { | ||
853 | FF_COMMON_FRAME | ||
854 | } AVFrame; | ||
855 | |||
856 | /** | ||
857 | * main external API structure. | ||
858 | * New fields can be added to the end with minor version bumps. | ||
859 | * Removal, reordering and changes to existing fields require a major | ||
860 | * version bump. | ||
861 | * sizeof(AVCodecContext) must not be used outside libav*. | ||
862 | */ | ||
863 | typedef struct AVCodecContext { | ||
864 | /** | ||
865 | * information on struct for av_log | ||
866 | * - set by avcodec_alloc_context | ||
867 | */ | ||
868 | const AVClass *av_class; | ||
869 | /** | ||
870 | * the average bitrate | ||
871 | * - encoding: Set by user; unused for constant quantizer encoding. | ||
872 | * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream. | ||
873 | */ | ||
874 | int bit_rate; | ||
875 | |||
876 | /** | ||
877 | * number of bits the bitstream is allowed to diverge from the reference. | ||
878 | * the reference can be CBR (for CBR pass1) or VBR (for pass2) | ||
879 | * - encoding: Set by user; unused for constant quantizer encoding. | ||
880 | * - decoding: unused | ||
881 | */ | ||
882 | int bit_rate_tolerance; | ||
883 | |||
884 | /** | ||
885 | * CODEC_FLAG_*. | ||
886 | * - encoding: Set by user. | ||
887 | * - decoding: Set by user. | ||
888 | */ | ||
889 | int flags; | ||
890 | |||
891 | /** | ||
892 | * Some codecs need additional format info. It is stored here. | ||
893 | * If any muxer uses this then ALL demuxers/parsers AND encoders for the | ||
894 | * specific codec MUST set it correctly otherwise stream copy breaks. | ||
895 | * In general use of this field by muxers is not recommanded. | ||
896 | * - encoding: Set by libavcodec. | ||
897 | * - decoding: Set by libavcodec. (FIXME: Is this OK?) | ||
898 | */ | ||
899 | int sub_id; | ||
900 | |||
901 | /** | ||
902 | * Motion estimation algorithm used for video coding. | ||
903 | * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), | ||
904 | * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific] | ||
905 | * - encoding: MUST be set by user. | ||
906 | * - decoding: unused | ||
907 | */ | ||
908 | int me_method; | ||
909 | |||
910 | /** | ||
911 | * some codecs need / can use extradata like Huffman tables. | ||
912 | * mjpeg: Huffman tables | ||
913 | * rv10: additional flags | ||
914 | * mpeg4: global headers (they can be in the bitstream or here) | ||
915 | * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger | ||
916 | * than extradata_size to avoid prolems if it is read with the bitstream reader. | ||
917 | * The bytewise contents of extradata must not depend on the architecture or CPU endianness. | ||
918 | * - encoding: Set/allocated/freed by libavcodec. | ||
919 | * - decoding: Set/allocated/freed by user. | ||
920 | */ | ||
921 | uint8_t *extradata; | ||
922 | int extradata_size; | ||
923 | |||
924 | /** | ||
925 | * This is the fundamental unit of time (in seconds) in terms | ||
926 | * of which frame timestamps are represented. For fixed-fps content, | ||
927 | * timebase should be 1/framerate and timestamp increments should be | ||
928 | * identically 1. | ||
929 | * - encoding: MUST be set by user. | ||
930 | * - decoding: Set by libavcodec. | ||
931 | */ | ||
932 | AVRational time_base; | ||
933 | |||
934 | /* video only */ | ||
935 | /** | ||
936 | * picture width / height. | ||
937 | * - encoding: MUST be set by user. | ||
938 | * - decoding: Set by libavcodec. | ||
939 | * Note: For compatibility it is possible to set this instead of | ||
940 | * coded_width/height before decoding. | ||
941 | */ | ||
942 | int width, height; | ||
943 | |||
944 | #define FF_ASPECT_EXTENDED 15 | ||
945 | |||
946 | /** | ||
947 | * the number of pictures in a group of pictures, or 0 for intra_only | ||
948 | * - encoding: Set by user. | ||
949 | * - decoding: unused | ||
950 | */ | ||
951 | int gop_size; | ||
952 | |||
953 | /** | ||
954 | * Pixel format, see PIX_FMT_xxx. | ||
955 | * - encoding: Set by user. | ||
956 | * - decoding: Set by libavcodec. | ||
957 | */ | ||
958 | enum PixelFormat pix_fmt; | ||
959 | |||
960 | /** | ||
961 | * Frame rate emulation. If not zero, the lower layer (i.e. format handler) | ||
962 | * has to read frames at native frame rate. | ||
963 | * - encoding: Set by user. | ||
964 | * - decoding: unused | ||
965 | */ | ||
966 | int rate_emu; | ||
967 | |||
968 | /** | ||
969 | * If non NULL, 'draw_horiz_band' is called by the libavcodec | ||
970 | * decoder to draw a horizontal band. It improves cache usage. Not | ||
971 | * all codecs can do that. You must check the codec capabilities | ||
972 | * beforehand. | ||
973 | * The function is also used by hardware acceleration APIs. | ||
974 | * It is called at least once during frame decoding to pass | ||
975 | * the data needed for hardware render. | ||
976 | * In that mode instead of pixel data, AVFrame points to | ||
977 | * a structure specific to the acceleration API. The application | ||
978 | * reads the structure and can change some fields to indicate progress | ||
979 | * or mark state. | ||
980 | * - encoding: unused | ||
981 | * - decoding: Set by user. | ||
982 | * @param height the height of the slice | ||
983 | * @param y the y position of the slice | ||
984 | * @param type 1->top field, 2->bottom field, 3->frame | ||
985 | * @param offset offset into the AVFrame.data from which the slice should be read | ||
986 | */ | ||
987 | void (*draw_horiz_band)(struct AVCodecContext *s, | ||
988 | const AVFrame *src, int offset[4], | ||
989 | int y, int type, int height); | ||
990 | |||
991 | /* audio only */ | ||
992 | int sample_rate; ///< samples per second | ||
993 | int channels; ///< number of audio channels | ||
994 | |||
995 | /** | ||
996 | * audio sample format | ||
997 | * - encoding: Set by user. | ||
998 | * - decoding: Set by libavcodec. | ||
999 | */ | ||
1000 | enum SampleFormat sample_fmt; ///< sample format, currently unused | ||
1001 | |||
1002 | /* The following data should not be initialized. */ | ||
1003 | /** | ||
1004 | * Samples per packet, initialized when calling 'init'. | ||
1005 | */ | ||
1006 | int frame_size; | ||
1007 | int frame_number; ///< audio or video frame number | ||
1008 | int real_pict_num; ///< Returns the real picture number of previous encoded frame. | ||
1009 | |||
1010 | /** | ||
1011 | * Number of frames the decoded output will be delayed relative to | ||
1012 | * the encoded input. | ||
1013 | * - encoding: Set by libavcodec. | ||
1014 | * - decoding: unused | ||
1015 | */ | ||
1016 | int delay; | ||
1017 | |||
1018 | /* - encoding parameters */ | ||
1019 | float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0) | ||
1020 | float qblur; ///< amount of qscale smoothing over time (0.0-1.0) | ||
1021 | |||
1022 | /** | ||
1023 | * minimum quantizer | ||
1024 | * - encoding: Set by user. | ||
1025 | * - decoding: unused | ||
1026 | */ | ||
1027 | int qmin; | ||
1028 | |||
1029 | /** | ||
1030 | * maximum quantizer | ||
1031 | * - encoding: Set by user. | ||
1032 | * - decoding: unused | ||
1033 | */ | ||
1034 | int qmax; | ||
1035 | |||
1036 | /** | ||
1037 | * maximum quantizer difference between frames | ||
1038 | * - encoding: Set by user. | ||
1039 | * - decoding: unused | ||
1040 | */ | ||
1041 | int max_qdiff; | ||
1042 | |||
1043 | /** | ||
1044 | * maximum number of B-frames between non-B-frames | ||
1045 | * Note: The output will be delayed by max_b_frames+1 relative to the input. | ||
1046 | * - encoding: Set by user. | ||
1047 | * - decoding: unused | ||
1048 | */ | ||
1049 | int max_b_frames; | ||
1050 | |||
1051 | /** | ||
1052 | * qscale factor between IP and B-frames | ||
1053 | * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). | ||
1054 | * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). | ||
1055 | * - encoding: Set by user. | ||
1056 | * - decoding: unused | ||
1057 | */ | ||
1058 | float b_quant_factor; | ||
1059 | |||
1060 | /** obsolete FIXME remove */ | ||
1061 | int rc_strategy; | ||
1062 | #define FF_RC_STRATEGY_XVID 1 | ||
1063 | |||
1064 | int b_frame_strategy; | ||
1065 | |||
1066 | /** | ||
1067 | * hurry up amount | ||
1068 | * - encoding: unused | ||
1069 | * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header | ||
1070 | * @deprecated Deprecated in favor of skip_idct and skip_frame. | ||
1071 | */ | ||
1072 | int hurry_up; | ||
1073 | |||
1074 | struct AVCodec *codec; | ||
1075 | |||
1076 | void *priv_data; | ||
1077 | |||
1078 | int rtp_payload_size; /* The size of the RTP payload: the coder will */ | ||
1079 | /* do its best to deliver a chunk with size */ | ||
1080 | /* below rtp_payload_size, the chunk will start */ | ||
1081 | /* with a start code on some codecs like H.263. */ | ||
1082 | /* This doesn't take account of any particular */ | ||
1083 | /* headers inside the transmitted RTP payload. */ | ||
1084 | |||
1085 | |||
1086 | /* The RTP callback: This function is called */ | ||
1087 | /* every time the encoder has a packet to send. */ | ||
1088 | /* It depends on the encoder if the data starts */ | ||
1089 | /* with a Start Code (it should). H.263 does. */ | ||
1090 | /* mb_nb contains the number of macroblocks */ | ||
1091 | /* encoded in the RTP payload. */ | ||
1092 | void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); | ||
1093 | |||
1094 | /* statistics, used for 2-pass encoding */ | ||
1095 | int mv_bits; | ||
1096 | int header_bits; | ||
1097 | int i_tex_bits; | ||
1098 | int p_tex_bits; | ||
1099 | int i_count; | ||
1100 | int p_count; | ||
1101 | int skip_count; | ||
1102 | int misc_bits; | ||
1103 | |||
1104 | /** | ||
1105 | * number of bits used for the previously encoded frame | ||
1106 | * - encoding: Set by libavcodec. | ||
1107 | * - decoding: unused | ||
1108 | */ | ||
1109 | int frame_bits; | ||
1110 | |||
1111 | /** | ||
1112 | * Private data of the user, can be used to carry app specific stuff. | ||
1113 | * - encoding: Set by user. | ||
1114 | * - decoding: Set by user. | ||
1115 | */ | ||
1116 | void *opaque; | ||
1117 | |||
1118 | char codec_name[32]; | ||
1119 | enum CodecType codec_type; /* see CODEC_TYPE_xxx */ | ||
1120 | enum CodecID codec_id; /* see CODEC_ID_xxx */ | ||
1121 | |||
1122 | /** | ||
1123 | * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). | ||
1124 | * This is used to work around some encoder bugs. | ||
1125 | * A demuxer should set this to what is stored in the field used to identify the codec. | ||
1126 | * If there are multiple such fields in a container then the demuxer should choose the one | ||
1127 | * which maximizes the information about the used codec. | ||
1128 | * If the codec tag field in a container is larger then 32 bits then the demuxer should | ||
1129 | * remap the longer ID to 32 bits with a table or other structure. Alternatively a new | ||
1130 | * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated | ||
1131 | * first. | ||
1132 | * - encoding: Set by user, if not then the default based on codec_id will be used. | ||
1133 | * - decoding: Set by user, will be converted to uppercase by libavcodec during init. | ||
1134 | */ | ||
1135 | unsigned int codec_tag; | ||
1136 | |||
1137 | /** | ||
1138 | * Work around bugs in encoders which sometimes cannot be detected automatically. | ||
1139 | * - encoding: Set by user | ||
1140 | * - decoding: Set by user | ||
1141 | */ | ||
1142 | int workaround_bugs; | ||
1143 | #define FF_BUG_AUTODETECT 1 ///< autodetection | ||
1144 | #define FF_BUG_OLD_MSMPEG4 2 | ||
1145 | #define FF_BUG_XVID_ILACE 4 | ||
1146 | #define FF_BUG_UMP4 8 | ||
1147 | #define FF_BUG_NO_PADDING 16 | ||
1148 | #define FF_BUG_AMV 32 | ||
1149 | #define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default. | ||
1150 | #define FF_BUG_QPEL_CHROMA 64 | ||
1151 | #define FF_BUG_STD_QPEL 128 | ||
1152 | #define FF_BUG_QPEL_CHROMA2 256 | ||
1153 | #define FF_BUG_DIRECT_BLOCKSIZE 512 | ||
1154 | #define FF_BUG_EDGE 1024 | ||
1155 | #define FF_BUG_HPEL_CHROMA 2048 | ||
1156 | #define FF_BUG_DC_CLIP 4096 | ||
1157 | #define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders. | ||
1158 | //#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%. | ||
1159 | |||
1160 | /** | ||
1161 | * luma single coefficient elimination threshold | ||
1162 | * - encoding: Set by user. | ||
1163 | * - decoding: unused | ||
1164 | */ | ||
1165 | int luma_elim_threshold; | ||
1166 | |||
1167 | /** | ||
1168 | * chroma single coeff elimination threshold | ||
1169 | * - encoding: Set by user. | ||
1170 | * - decoding: unused | ||
1171 | */ | ||
1172 | int chroma_elim_threshold; | ||
1173 | |||
1174 | /** | ||
1175 | * strictly follow the standard (MPEG4, ...). | ||
1176 | * - encoding: Set by user. | ||
1177 | * - decoding: Set by user. | ||
1178 | * Setting this to STRICT or higher means the encoder and decoder will | ||
1179 | * generally do stupid things. While setting it to inofficial or lower | ||
1180 | * will mean the encoder might use things that are not supported by all | ||
1181 | * spec compliant decoders. Decoders make no difference between normal, | ||
1182 | * inofficial and experimental, that is they always try to decode things | ||
1183 | * when they can unless they are explicitly asked to behave stupid | ||
1184 | * (=strictly conform to the specs) | ||
1185 | */ | ||
1186 | int strict_std_compliance; | ||
1187 | #define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to a older more strict version of the spec or reference software. | ||
1188 | #define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences. | ||
1189 | #define FF_COMPLIANCE_NORMAL 0 | ||
1190 | #define FF_COMPLIANCE_INOFFICIAL -1 ///< Allow inofficial extensions. | ||
1191 | #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things. | ||
1192 | |||
1193 | /** | ||
1194 | * qscale offset between IP and B-frames | ||
1195 | * - encoding: Set by user. | ||
1196 | * - decoding: unused | ||
1197 | */ | ||
1198 | float b_quant_offset; | ||
1199 | |||
1200 | /** | ||
1201 | * Error recognization; higher values will detect more errors but may | ||
1202 | * misdetect some more or less valid parts as errors. | ||
1203 | * - encoding: unused | ||
1204 | * - decoding: Set by user. | ||
1205 | */ | ||
1206 | int error_recognition; | ||
1207 | #define FF_ER_CAREFUL 1 | ||
1208 | #define FF_ER_COMPLIANT 2 | ||
1209 | #define FF_ER_AGGRESSIVE 3 | ||
1210 | #define FF_ER_VERY_AGGRESSIVE 4 | ||
1211 | |||
1212 | /** | ||
1213 | * Called at the beginning of each frame to get a buffer for it. | ||
1214 | * If pic.reference is set then the frame will be read later by libavcodec. | ||
1215 | * avcodec_align_dimensions() should be used to find the required width and | ||
1216 | * height, as they normally need to be rounded up to the next multiple of 16. | ||
1217 | * - encoding: unused | ||
1218 | * - decoding: Set by libavcodec., user can override. | ||
1219 | */ | ||
1220 | int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic); | ||
1221 | |||
1222 | /** | ||
1223 | * Called to release buffers which were allocated with get_buffer. | ||
1224 | * A released buffer can be reused in get_buffer(). | ||
1225 | * pic.data[*] must be set to NULL. | ||
1226 | * - encoding: unused | ||
1227 | * - decoding: Set by libavcodec., user can override. | ||
1228 | */ | ||
1229 | void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic); | ||
1230 | |||
1231 | /** | ||
1232 | * Size of the frame reordering buffer in the decoder. | ||
1233 | * For MPEG-2 it is 1 IPB or 0 low delay IP. | ||
1234 | * - encoding: Set by libavcodec. | ||
1235 | * - decoding: Set by libavcodec. | ||
1236 | */ | ||
1237 | int has_b_frames; | ||
1238 | |||
1239 | /** | ||
1240 | * number of bytes per packet if constant and known or 0 | ||
1241 | * Used by some WAV based audio codecs. | ||
1242 | */ | ||
1243 | int block_align; | ||
1244 | |||
1245 | int parse_only; /* - decoding only: If true, only parsing is done | ||
1246 | (function avcodec_parse_frame()). The frame | ||
1247 | data is returned. Only MPEG codecs support this now. */ | ||
1248 | |||
1249 | /** | ||
1250 | * 0-> h263 quant 1-> mpeg quant | ||
1251 | * - encoding: Set by user. | ||
1252 | * - decoding: unused | ||
1253 | */ | ||
1254 | int mpeg_quant; | ||
1255 | |||
1256 | /** | ||
1257 | * pass1 encoding statistics output buffer | ||
1258 | * - encoding: Set by libavcodec. | ||
1259 | * - decoding: unused | ||
1260 | */ | ||
1261 | char *stats_out; | ||
1262 | |||
1263 | /** | ||
1264 | * pass2 encoding statistics input buffer | ||
1265 | * Concatenated stuff from stats_out of pass1 should be placed here. | ||
1266 | * - encoding: Allocated/set/freed by user. | ||
1267 | * - decoding: unused | ||
1268 | */ | ||
1269 | char *stats_in; | ||
1270 | |||
1271 | /** | ||
1272 | * ratecontrol qmin qmax limiting method | ||
1273 | * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax. | ||
1274 | * - encoding: Set by user. | ||
1275 | * - decoding: unused | ||
1276 | */ | ||
1277 | float rc_qsquish; | ||
1278 | |||
1279 | float rc_qmod_amp; | ||
1280 | int rc_qmod_freq; | ||
1281 | |||
1282 | /** | ||
1283 | * ratecontrol override, see RcOverride | ||
1284 | * - encoding: Allocated/set/freed by user. | ||
1285 | * - decoding: unused | ||
1286 | */ | ||
1287 | RcOverride *rc_override; | ||
1288 | int rc_override_count; | ||
1289 | |||
1290 | /** | ||
1291 | * rate control equation | ||
1292 | * - encoding: Set by user | ||
1293 | * - decoding: unused | ||
1294 | */ | ||
1295 | const char *rc_eq; | ||
1296 | |||
1297 | /** | ||
1298 | * maximum bitrate | ||
1299 | * - encoding: Set by user. | ||
1300 | * - decoding: unused | ||
1301 | */ | ||
1302 | int rc_max_rate; | ||
1303 | |||
1304 | /** | ||
1305 | * minimum bitrate | ||
1306 | * - encoding: Set by user. | ||
1307 | * - decoding: unused | ||
1308 | */ | ||
1309 | int rc_min_rate; | ||
1310 | |||
1311 | /** | ||
1312 | * decoder bitstream buffer size | ||
1313 | * - encoding: Set by user. | ||
1314 | * - decoding: unused | ||
1315 | */ | ||
1316 | int rc_buffer_size; | ||
1317 | float rc_buffer_aggressivity; | ||
1318 | |||
1319 | /** | ||
1320 | * qscale factor between P and I-frames | ||
1321 | * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). | ||
1322 | * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). | ||
1323 | * - encoding: Set by user. | ||
1324 | * - decoding: unused | ||
1325 | */ | ||
1326 | float i_quant_factor; | ||
1327 | |||
1328 | /** | ||
1329 | * qscale offset between P and I-frames | ||
1330 | * - encoding: Set by user. | ||
1331 | * - decoding: unused | ||
1332 | */ | ||
1333 | float i_quant_offset; | ||
1334 | |||
1335 | /** | ||
1336 | * initial complexity for pass1 ratecontrol | ||
1337 | * - encoding: Set by user. | ||
1338 | * - decoding: unused | ||
1339 | */ | ||
1340 | float rc_initial_cplx; | ||
1341 | |||
1342 | /** | ||
1343 | * DCT algorithm, see FF_DCT_* below | ||
1344 | * - encoding: Set by user. | ||
1345 | * - decoding: unused | ||
1346 | */ | ||
1347 | int dct_algo; | ||
1348 | #define FF_DCT_AUTO 0 | ||
1349 | #define FF_DCT_FASTINT 1 | ||
1350 | #define FF_DCT_INT 2 | ||
1351 | #define FF_DCT_MMX 3 | ||
1352 | #define FF_DCT_MLIB 4 | ||
1353 | #define FF_DCT_ALTIVEC 5 | ||
1354 | #define FF_DCT_FAAN 6 | ||
1355 | |||
1356 | /** | ||
1357 | * luminance masking (0-> disabled) | ||
1358 | * - encoding: Set by user. | ||
1359 | * - decoding: unused | ||
1360 | */ | ||
1361 | float lumi_masking; | ||
1362 | |||
1363 | /** | ||
1364 | * temporary complexity masking (0-> disabled) | ||
1365 | * - encoding: Set by user. | ||
1366 | * - decoding: unused | ||
1367 | */ | ||
1368 | float temporal_cplx_masking; | ||
1369 | |||
1370 | /** | ||
1371 | * spatial complexity masking (0-> disabled) | ||
1372 | * - encoding: Set by user. | ||
1373 | * - decoding: unused | ||
1374 | */ | ||
1375 | float spatial_cplx_masking; | ||
1376 | |||
1377 | /** | ||
1378 | * p block masking (0-> disabled) | ||
1379 | * - encoding: Set by user. | ||
1380 | * - decoding: unused | ||
1381 | */ | ||
1382 | float p_masking; | ||
1383 | |||
1384 | /** | ||
1385 | * darkness masking (0-> disabled) | ||
1386 | * - encoding: Set by user. | ||
1387 | * - decoding: unused | ||
1388 | */ | ||
1389 | float dark_masking; | ||
1390 | |||
1391 | /** | ||
1392 | * IDCT algorithm, see FF_IDCT_* below. | ||
1393 | * - encoding: Set by user. | ||
1394 | * - decoding: Set by user. | ||
1395 | */ | ||
1396 | int idct_algo; | ||
1397 | #define FF_IDCT_AUTO 0 | ||
1398 | #define FF_IDCT_INT 1 | ||
1399 | #define FF_IDCT_SIMPLE 2 | ||
1400 | #define FF_IDCT_SIMPLEMMX 3 | ||
1401 | #define FF_IDCT_LIBMPEG2MMX 4 | ||
1402 | #define FF_IDCT_PS2 5 | ||
1403 | #define FF_IDCT_MLIB 6 | ||
1404 | #define FF_IDCT_ARM 7 | ||
1405 | #define FF_IDCT_ALTIVEC 8 | ||
1406 | #define FF_IDCT_SH4 9 | ||
1407 | #define FF_IDCT_SIMPLEARM 10 | ||
1408 | #define FF_IDCT_H264 11 | ||
1409 | #define FF_IDCT_VP3 12 | ||
1410 | #define FF_IDCT_IPP 13 | ||
1411 | #define FF_IDCT_XVIDMMX 14 | ||
1412 | #define FF_IDCT_CAVS 15 | ||
1413 | #define FF_IDCT_SIMPLEARMV5TE 16 | ||
1414 | #define FF_IDCT_SIMPLEARMV6 17 | ||
1415 | #define FF_IDCT_SIMPLEVIS 18 | ||
1416 | #define FF_IDCT_WMV2 19 | ||
1417 | #define FF_IDCT_FAAN 20 | ||
1418 | #define FF_IDCT_EA 21 | ||
1419 | #define FF_IDCT_SIMPLENEON 22 | ||
1420 | #define FF_IDCT_SIMPLEALPHA 23 | ||
1421 | |||
1422 | /** | ||
1423 | * slice count | ||
1424 | * - encoding: Set by libavcodec. | ||
1425 | * - decoding: Set by user (or 0). | ||
1426 | */ | ||
1427 | int slice_count; | ||
1428 | /** | ||
1429 | * slice offsets in the frame in bytes | ||
1430 | * - encoding: Set/allocated by libavcodec. | ||
1431 | * - decoding: Set/allocated by user (or NULL). | ||
1432 | */ | ||
1433 | int *slice_offset; | ||
1434 | |||
1435 | /** | ||
1436 | * error concealment flags | ||
1437 | * - encoding: unused | ||
1438 | * - decoding: Set by user. | ||
1439 | */ | ||
1440 | int error_concealment; | ||
1441 | #define FF_EC_GUESS_MVS 1 | ||
1442 | #define FF_EC_DEBLOCK 2 | ||
1443 | |||
1444 | /** | ||
1445 | * dsp_mask could be add used to disable unwanted CPU features | ||
1446 | * CPU features (i.e. MMX, SSE. ...) | ||
1447 | * | ||
1448 | * With the FORCE flag you may instead enable given CPU features. | ||
1449 | * (Dangerous: Usable in case of misdetection, improper usage however will | ||
1450 | * result into program crash.) | ||
1451 | */ | ||
1452 | unsigned dsp_mask; | ||
1453 | #define FF_MM_FORCE 0x80000000 /* Force usage of selected flags (OR) */ | ||
1454 | /* lower 16 bits - CPU features */ | ||
1455 | #define FF_MM_MMX 0x0001 ///< standard MMX | ||
1456 | #define FF_MM_3DNOW 0x0004 ///< AMD 3DNOW | ||
1457 | #define FF_MM_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext | ||
1458 | #define FF_MM_SSE 0x0008 ///< SSE functions | ||
1459 | #define FF_MM_SSE2 0x0010 ///< PIV SSE2 functions | ||
1460 | #define FF_MM_3DNOWEXT 0x0020 ///< AMD 3DNowExt | ||
1461 | #define FF_MM_SSE3 0x0040 ///< Prescott SSE3 functions | ||
1462 | #define FF_MM_SSSE3 0x0080 ///< Conroe SSSE3 functions | ||
1463 | #define FF_MM_IWMMXT 0x0100 ///< XScale IWMMXT | ||
1464 | #define FF_MM_ALTIVEC 0x0001 ///< standard AltiVec | ||
1465 | |||
1466 | /** | ||
1467 | * bits per sample/pixel from the demuxer (needed for huffyuv). | ||
1468 | * - encoding: Set by libavcodec. | ||
1469 | * - decoding: Set by user. | ||
1470 | */ | ||
1471 | int bits_per_coded_sample; | ||
1472 | |||
1473 | /** | ||
1474 | * prediction method (needed for huffyuv) | ||
1475 | * - encoding: Set by user. | ||
1476 | * - decoding: unused | ||
1477 | */ | ||
1478 | int prediction_method; | ||
1479 | #define FF_PRED_LEFT 0 | ||
1480 | #define FF_PRED_PLANE 1 | ||
1481 | #define FF_PRED_MEDIAN 2 | ||
1482 | |||
1483 | /** | ||
1484 | * sample aspect ratio (0 if unknown) | ||
1485 | * That is the width of a pixel divided by the height of the pixel. | ||
1486 | * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. | ||
1487 | * - encoding: Set by user. | ||
1488 | * - decoding: Set by libavcodec. | ||
1489 | */ | ||
1490 | AVRational sample_aspect_ratio; | ||
1491 | |||
1492 | /** | ||
1493 | * the picture in the bitstream | ||
1494 | * - encoding: Set by libavcodec. | ||
1495 | * - decoding: Set by libavcodec. | ||
1496 | */ | ||
1497 | AVFrame *coded_frame; | ||
1498 | |||
1499 | /** | ||
1500 | * debug | ||
1501 | * - encoding: Set by user. | ||
1502 | * - decoding: Set by user. | ||
1503 | */ | ||
1504 | int debug; | ||
1505 | #define FF_DEBUG_PICT_INFO 1 | ||
1506 | #define FF_DEBUG_RC 2 | ||
1507 | #define FF_DEBUG_BITSTREAM 4 | ||
1508 | #define FF_DEBUG_MB_TYPE 8 | ||
1509 | #define FF_DEBUG_QP 16 | ||
1510 | #define FF_DEBUG_MV 32 | ||
1511 | #define FF_DEBUG_DCT_COEFF 0x00000040 | ||
1512 | #define FF_DEBUG_SKIP 0x00000080 | ||
1513 | #define FF_DEBUG_STARTCODE 0x00000100 | ||
1514 | #define FF_DEBUG_PTS 0x00000200 | ||
1515 | #define FF_DEBUG_ER 0x00000400 | ||
1516 | #define FF_DEBUG_MMCO 0x00000800 | ||
1517 | #define FF_DEBUG_BUGS 0x00001000 | ||
1518 | #define FF_DEBUG_VIS_QP 0x00002000 | ||
1519 | #define FF_DEBUG_VIS_MB_TYPE 0x00004000 | ||
1520 | #define FF_DEBUG_BUFFERS 0x00008000 | ||
1521 | |||
1522 | /** | ||
1523 | * debug | ||
1524 | * - encoding: Set by user. | ||
1525 | * - decoding: Set by user. | ||
1526 | */ | ||
1527 | int debug_mv; | ||
1528 | #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames | ||
1529 | #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames | ||
1530 | #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames | ||
1531 | |||
1532 | /** | ||
1533 | * error | ||
1534 | * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. | ||
1535 | * - decoding: unused | ||
1536 | */ | ||
1537 | uint64_t error[4]; | ||
1538 | |||
1539 | /** | ||
1540 | * minimum MB quantizer | ||
1541 | * - encoding: unused | ||
1542 | * - decoding: unused | ||
1543 | */ | ||
1544 | int mb_qmin; | ||
1545 | |||
1546 | /** | ||
1547 | * maximum MB quantizer | ||
1548 | * - encoding: unused | ||
1549 | * - decoding: unused | ||
1550 | */ | ||
1551 | int mb_qmax; | ||
1552 | |||
1553 | /** | ||
1554 | * motion estimation comparison function | ||
1555 | * - encoding: Set by user. | ||
1556 | * - decoding: unused | ||
1557 | */ | ||
1558 | int me_cmp; | ||
1559 | /** | ||
1560 | * subpixel motion estimation comparison function | ||
1561 | * - encoding: Set by user. | ||
1562 | * - decoding: unused | ||
1563 | */ | ||
1564 | int me_sub_cmp; | ||
1565 | /** | ||
1566 | * macroblock comparison function (not supported yet) | ||
1567 | * - encoding: Set by user. | ||
1568 | * - decoding: unused | ||
1569 | */ | ||
1570 | int mb_cmp; | ||
1571 | /** | ||
1572 | * interlaced DCT comparison function | ||
1573 | * - encoding: Set by user. | ||
1574 | * - decoding: unused | ||
1575 | */ | ||
1576 | int ildct_cmp; | ||
1577 | #define FF_CMP_SAD 0 | ||
1578 | #define FF_CMP_SSE 1 | ||
1579 | #define FF_CMP_SATD 2 | ||
1580 | #define FF_CMP_DCT 3 | ||
1581 | #define FF_CMP_PSNR 4 | ||
1582 | #define FF_CMP_BIT 5 | ||
1583 | #define FF_CMP_RD 6 | ||
1584 | #define FF_CMP_ZERO 7 | ||
1585 | #define FF_CMP_VSAD 8 | ||
1586 | #define FF_CMP_VSSE 9 | ||
1587 | #define FF_CMP_NSSE 10 | ||
1588 | #define FF_CMP_W53 11 | ||
1589 | #define FF_CMP_W97 12 | ||
1590 | #define FF_CMP_DCTMAX 13 | ||
1591 | #define FF_CMP_DCT264 14 | ||
1592 | #define FF_CMP_CHROMA 256 | ||
1593 | |||
1594 | /** | ||
1595 | * ME diamond size & shape | ||
1596 | * - encoding: Set by user. | ||
1597 | * - decoding: unused | ||
1598 | */ | ||
1599 | int dia_size; | ||
1600 | |||
1601 | /** | ||
1602 | * amount of previous MV predictors (2a+1 x 2a+1 square) | ||
1603 | * - encoding: Set by user. | ||
1604 | * - decoding: unused | ||
1605 | */ | ||
1606 | int last_predictor_count; | ||
1607 | |||
1608 | /** | ||
1609 | * prepass for motion estimation | ||
1610 | * - encoding: Set by user. | ||
1611 | * - decoding: unused | ||
1612 | */ | ||
1613 | int pre_me; | ||
1614 | |||
1615 | /** | ||
1616 | * motion estimation prepass comparison function | ||
1617 | * - encoding: Set by user. | ||
1618 | * - decoding: unused | ||
1619 | */ | ||
1620 | int me_pre_cmp; | ||
1621 | |||
1622 | /** | ||
1623 | * ME prepass diamond size & shape | ||
1624 | * - encoding: Set by user. | ||
1625 | * - decoding: unused | ||
1626 | */ | ||
1627 | int pre_dia_size; | ||
1628 | |||
1629 | /** | ||
1630 | * subpel ME quality | ||
1631 | * - encoding: Set by user. | ||
1632 | * - decoding: unused | ||
1633 | */ | ||
1634 | int me_subpel_quality; | ||
1635 | |||
1636 | /** | ||
1637 | * callback to negotiate the pixelFormat | ||
1638 | * @param fmt is the list of formats which are supported by the codec, | ||
1639 | * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. | ||
1640 | * The first is always the native one. | ||
1641 | * @return the chosen format | ||
1642 | * - encoding: unused | ||
1643 | * - decoding: Set by user, if not set the native format will be chosen. | ||
1644 | */ | ||
1645 | enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt); | ||
1646 | |||
1647 | /** | ||
1648 | * DTG active format information (additional aspect ratio | ||
1649 | * information only used in DVB MPEG-2 transport streams) | ||
1650 | * 0 if not set. | ||
1651 | * | ||
1652 | * - encoding: unused | ||
1653 | * - decoding: Set by decoder. | ||
1654 | */ | ||
1655 | int dtg_active_format; | ||
1656 | #define FF_DTG_AFD_SAME 8 | ||
1657 | #define FF_DTG_AFD_4_3 9 | ||
1658 | #define FF_DTG_AFD_16_9 10 | ||
1659 | #define FF_DTG_AFD_14_9 11 | ||
1660 | #define FF_DTG_AFD_4_3_SP_14_9 13 | ||
1661 | #define FF_DTG_AFD_16_9_SP_14_9 14 | ||
1662 | #define FF_DTG_AFD_SP_4_3 15 | ||
1663 | |||
1664 | /** | ||
1665 | * maximum motion estimation search range in subpel units | ||
1666 | * If 0 then no limit. | ||
1667 | * | ||
1668 | * - encoding: Set by user. | ||
1669 | * - decoding: unused | ||
1670 | */ | ||
1671 | int me_range; | ||
1672 | |||
1673 | /** | ||
1674 | * intra quantizer bias | ||
1675 | * - encoding: Set by user. | ||
1676 | * - decoding: unused | ||
1677 | */ | ||
1678 | int intra_quant_bias; | ||
1679 | #define FF_DEFAULT_QUANT_BIAS 999999 | ||
1680 | |||
1681 | /** | ||
1682 | * inter quantizer bias | ||
1683 | * - encoding: Set by user. | ||
1684 | * - decoding: unused | ||
1685 | */ | ||
1686 | int inter_quant_bias; | ||
1687 | |||
1688 | /** | ||
1689 | * color table ID | ||
1690 | * - encoding: unused | ||
1691 | * - decoding: Which clrtable should be used for 8bit RGB images. | ||
1692 | * Tables have to be stored somewhere. FIXME | ||
1693 | */ | ||
1694 | int color_table_id; | ||
1695 | |||
1696 | /** | ||
1697 | * internal_buffer count | ||
1698 | * Don't touch, used by libavcodec default_get_buffer(). | ||
1699 | */ | ||
1700 | int internal_buffer_count; | ||
1701 | |||
1702 | /** | ||
1703 | * internal_buffers | ||
1704 | * Don't touch, used by libavcodec default_get_buffer(). | ||
1705 | */ | ||
1706 | void *internal_buffer; | ||
1707 | |||
1708 | #define FF_LAMBDA_SHIFT 7 | ||
1709 | #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT) | ||
1710 | #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda | ||
1711 | #define FF_LAMBDA_MAX (256*128-1) | ||
1712 | |||
1713 | #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove | ||
1714 | /** | ||
1715 | * Global quality for codecs which cannot change it per frame. | ||
1716 | * This should be proportional to MPEG-1/2/4 qscale. | ||
1717 | * - encoding: Set by user. | ||
1718 | * - decoding: unused | ||
1719 | */ | ||
1720 | int global_quality; | ||
1721 | |||
1722 | #define FF_CODER_TYPE_VLC 0 | ||
1723 | #define FF_CODER_TYPE_AC 1 | ||
1724 | #define FF_CODER_TYPE_RAW 2 | ||
1725 | #define FF_CODER_TYPE_RLE 3 | ||
1726 | #define FF_CODER_TYPE_DEFLATE 4 | ||
1727 | /** | ||
1728 | * coder type | ||
1729 | * - encoding: Set by user. | ||
1730 | * - decoding: unused | ||
1731 | */ | ||
1732 | int coder_type; | ||
1733 | |||
1734 | /** | ||
1735 | * context model | ||
1736 | * - encoding: Set by user. | ||
1737 | * - decoding: unused | ||
1738 | */ | ||
1739 | int context_model; | ||
1740 | #if 0 | ||
1741 | /** | ||
1742 | * | ||
1743 | * - encoding: unused | ||
1744 | * - decoding: Set by user. | ||
1745 | */ | ||
1746 | uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size); | ||
1747 | #endif | ||
1748 | |||
1749 | /** | ||
1750 | * slice flags | ||
1751 | * - encoding: unused | ||
1752 | * - decoding: Set by user. | ||
1753 | */ | ||
1754 | int slice_flags; | ||
1755 | #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display | ||
1756 | #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics) | ||
1757 | #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1) | ||
1758 | |||
1759 | /** | ||
1760 | * XVideo Motion Acceleration | ||
1761 | * - encoding: forbidden | ||
1762 | * - decoding: set by decoder | ||
1763 | */ | ||
1764 | int xvmc_acceleration; | ||
1765 | |||
1766 | /** | ||
1767 | * macroblock decision mode | ||
1768 | * - encoding: Set by user. | ||
1769 | * - decoding: unused | ||
1770 | */ | ||
1771 | int mb_decision; | ||
1772 | #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp | ||
1773 | #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits | ||
1774 | #define FF_MB_DECISION_RD 2 ///< rate distortion | ||
1775 | |||
1776 | /** | ||
1777 | * custom intra quantization matrix | ||
1778 | * - encoding: Set by user, can be NULL. | ||
1779 | * - decoding: Set by libavcodec. | ||
1780 | */ | ||
1781 | uint16_t *intra_matrix; | ||
1782 | |||
1783 | /** | ||
1784 | * custom inter quantization matrix | ||
1785 | * - encoding: Set by user, can be NULL. | ||
1786 | * - decoding: Set by libavcodec. | ||
1787 | */ | ||
1788 | uint16_t *inter_matrix; | ||
1789 | |||
1790 | /** | ||
1791 | * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). | ||
1792 | * This is used to work around some encoder bugs. | ||
1793 | * - encoding: unused | ||
1794 | * - decoding: Set by user, will be converted to uppercase by libavcodec during init. | ||
1795 | */ | ||
1796 | unsigned int stream_codec_tag; | ||
1797 | |||
1798 | /** | ||
1799 | * scene change detection threshold | ||
1800 | * 0 is default, larger means fewer detected scene changes. | ||
1801 | * - encoding: Set by user. | ||
1802 | * - decoding: unused | ||
1803 | */ | ||
1804 | int scenechange_threshold; | ||
1805 | |||
1806 | /** | ||
1807 | * minimum Lagrange multipler | ||
1808 | * - encoding: Set by user. | ||
1809 | * - decoding: unused | ||
1810 | */ | ||
1811 | int lmin; | ||
1812 | |||
1813 | /** | ||
1814 | * maximum Lagrange multipler | ||
1815 | * - encoding: Set by user. | ||
1816 | * - decoding: unused | ||
1817 | */ | ||
1818 | int lmax; | ||
1819 | |||
1820 | /** | ||
1821 | * palette control structure | ||
1822 | * - encoding: ??? (no palette-enabled encoder yet) | ||
1823 | * - decoding: Set by user. | ||
1824 | */ | ||
1825 | struct AVPaletteControl *palctrl; | ||
1826 | |||
1827 | /** | ||
1828 | * noise reduction strength | ||
1829 | * - encoding: Set by user. | ||
1830 | * - decoding: unused | ||
1831 | */ | ||
1832 | int noise_reduction; | ||
1833 | |||
1834 | /** | ||
1835 | * Called at the beginning of a frame to get cr buffer for it. | ||
1836 | * Buffer type (size, hints) must be the same. libavcodec won't check it. | ||
1837 | * libavcodec will pass previous buffer in pic, function should return | ||
1838 | * same buffer or new buffer with old frame "painted" into it. | ||
1839 | * If pic.data[0] == NULL must behave like get_buffer(). | ||
1840 | * - encoding: unused | ||
1841 | * - decoding: Set by libavcodec., user can override | ||
1842 | */ | ||
1843 | int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic); | ||
1844 | |||
1845 | /** | ||
1846 | * Number of bits which should be loaded into the rc buffer before decoding starts. | ||
1847 | * - encoding: Set by user. | ||
1848 | * - decoding: unused | ||
1849 | */ | ||
1850 | int rc_initial_buffer_occupancy; | ||
1851 | |||
1852 | /** | ||
1853 | * | ||
1854 | * - encoding: Set by user. | ||
1855 | * - decoding: unused | ||
1856 | */ | ||
1857 | int inter_threshold; | ||
1858 | |||
1859 | /** | ||
1860 | * CODEC_FLAG2_* | ||
1861 | * - encoding: Set by user. | ||
1862 | * - decoding: Set by user. | ||
1863 | */ | ||
1864 | int flags2; | ||
1865 | |||
1866 | /** | ||
1867 | * Simulates errors in the bitstream to test error concealment. | ||
1868 | * - encoding: Set by user. | ||
1869 | * - decoding: unused | ||
1870 | */ | ||
1871 | int error_rate; | ||
1872 | |||
1873 | /** | ||
1874 | * MP3 antialias algorithm, see FF_AA_* below. | ||
1875 | * - encoding: unused | ||
1876 | * - decoding: Set by user. | ||
1877 | */ | ||
1878 | int antialias_algo; | ||
1879 | #define FF_AA_AUTO 0 | ||
1880 | #define FF_AA_FASTINT 1 //not implemented yet | ||
1881 | #define FF_AA_INT 2 | ||
1882 | #define FF_AA_FLOAT 3 | ||
1883 | /** | ||
1884 | * quantizer noise shaping | ||
1885 | * - encoding: Set by user. | ||
1886 | * - decoding: unused | ||
1887 | */ | ||
1888 | int quantizer_noise_shaping; | ||
1889 | |||
1890 | /** | ||
1891 | * thread count | ||
1892 | * is used to decide how many independent tasks should be passed to execute() | ||
1893 | * - encoding: Set by user. | ||
1894 | * - decoding: Set by user. | ||
1895 | */ | ||
1896 | int thread_count; | ||
1897 | |||
1898 | /** | ||
1899 | * The codec may call this to execute several independent things. | ||
1900 | * It will return only after finishing all tasks. | ||
1901 | * The user may replace this with some multithreaded implementation, | ||
1902 | * the default implementation will execute the parts serially. | ||
1903 | * @param count the number of things to execute | ||
1904 | * - encoding: Set by libavcodec, user can override. | ||
1905 | * - decoding: Set by libavcodec, user can override. | ||
1906 | */ | ||
1907 | int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size); | ||
1908 | |||
1909 | /** | ||
1910 | * thread opaque | ||
1911 | * Can be used by execute() to store some per AVCodecContext stuff. | ||
1912 | * - encoding: set by execute() | ||
1913 | * - decoding: set by execute() | ||
1914 | */ | ||
1915 | void *thread_opaque; | ||
1916 | |||
1917 | /** | ||
1918 | * Motion estimation threshold below which no motion estimation is | ||
1919 | * performed, but instead the user specified motion vectors are used. | ||
1920 | * | ||
1921 | * - encoding: Set by user. | ||
1922 | * - decoding: unused | ||
1923 | */ | ||
1924 | int me_threshold; | ||
1925 | |||
1926 | /** | ||
1927 | * Macroblock threshold below which the user specified macroblock types will be used. | ||
1928 | * - encoding: Set by user. | ||
1929 | * - decoding: unused | ||
1930 | */ | ||
1931 | int mb_threshold; | ||
1932 | |||
1933 | /** | ||
1934 | * precision of the intra DC coefficient - 8 | ||
1935 | * - encoding: Set by user. | ||
1936 | * - decoding: unused | ||
1937 | */ | ||
1938 | int intra_dc_precision; | ||
1939 | |||
1940 | /** | ||
1941 | * noise vs. sse weight for the nsse comparsion function | ||
1942 | * - encoding: Set by user. | ||
1943 | * - decoding: unused | ||
1944 | */ | ||
1945 | int nsse_weight; | ||
1946 | |||
1947 | /** | ||
1948 | * Number of macroblock rows at the top which are skipped. | ||
1949 | * - encoding: unused | ||
1950 | * - decoding: Set by user. | ||
1951 | */ | ||
1952 | int skip_top; | ||
1953 | |||
1954 | /** | ||
1955 | * Number of macroblock rows at the bottom which are skipped. | ||
1956 | * - encoding: unused | ||
1957 | * - decoding: Set by user. | ||
1958 | */ | ||
1959 | int skip_bottom; | ||
1960 | |||
1961 | /** | ||
1962 | * profile | ||
1963 | * - encoding: Set by user. | ||
1964 | * - decoding: Set by libavcodec. | ||
1965 | */ | ||
1966 | int profile; | ||
1967 | #define FF_PROFILE_UNKNOWN -99 | ||
1968 | #define FF_PROFILE_AAC_MAIN 0 | ||
1969 | #define FF_PROFILE_AAC_LOW 1 | ||
1970 | #define FF_PROFILE_AAC_SSR 2 | ||
1971 | #define FF_PROFILE_AAC_LTP 3 | ||
1972 | |||
1973 | /** | ||
1974 | * level | ||
1975 | * - encoding: Set by user. | ||
1976 | * - decoding: Set by libavcodec. | ||
1977 | */ | ||
1978 | int level; | ||
1979 | #define FF_LEVEL_UNKNOWN -99 | ||
1980 | |||
1981 | /** | ||
1982 | * low resolution decoding, 1-> 1/2 size, 2->1/4 size | ||
1983 | * - encoding: unused | ||
1984 | * - decoding: Set by user. | ||
1985 | */ | ||
1986 | int lowres; | ||
1987 | |||
1988 | /** | ||
1989 | * Bitstream width / height, may be different from width/height if lowres | ||
1990 | * or other things are used. | ||
1991 | * - encoding: unused | ||
1992 | * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. | ||
1993 | */ | ||
1994 | int coded_width, coded_height; | ||
1995 | |||
1996 | /** | ||
1997 | * frame skip threshold | ||
1998 | * - encoding: Set by user. | ||
1999 | * - decoding: unused | ||
2000 | */ | ||
2001 | int frame_skip_threshold; | ||
2002 | |||
2003 | /** | ||
2004 | * frame skip factor | ||
2005 | * - encoding: Set by user. | ||
2006 | * - decoding: unused | ||
2007 | */ | ||
2008 | int frame_skip_factor; | ||
2009 | |||
2010 | /** | ||
2011 | * frame skip exponent | ||
2012 | * - encoding: Set by user. | ||
2013 | * - decoding: unused | ||
2014 | */ | ||
2015 | int frame_skip_exp; | ||
2016 | |||
2017 | /** | ||
2018 | * frame skip comparison function | ||
2019 | * - encoding: Set by user. | ||
2020 | * - decoding: unused | ||
2021 | */ | ||
2022 | int frame_skip_cmp; | ||
2023 | |||
2024 | /** | ||
2025 | * Border processing masking, raises the quantizer for mbs on the borders | ||
2026 | * of the picture. | ||
2027 | * - encoding: Set by user. | ||
2028 | * - decoding: unused | ||
2029 | */ | ||
2030 | float border_masking; | ||
2031 | |||
2032 | /** | ||
2033 | * minimum MB lagrange multipler | ||
2034 | * - encoding: Set by user. | ||
2035 | * - decoding: unused | ||
2036 | */ | ||
2037 | int mb_lmin; | ||
2038 | |||
2039 | /** | ||
2040 | * maximum MB lagrange multipler | ||
2041 | * - encoding: Set by user. | ||
2042 | * - decoding: unused | ||
2043 | */ | ||
2044 | int mb_lmax; | ||
2045 | |||
2046 | /** | ||
2047 | * | ||
2048 | * - encoding: Set by user. | ||
2049 | * - decoding: unused | ||
2050 | */ | ||
2051 | int me_penalty_compensation; | ||
2052 | |||
2053 | /** | ||
2054 | * | ||
2055 | * - encoding: unused | ||
2056 | * - decoding: Set by user. | ||
2057 | */ | ||
2058 | enum AVDiscard skip_loop_filter; | ||
2059 | |||
2060 | /** | ||
2061 | * | ||
2062 | * - encoding: unused | ||
2063 | * - decoding: Set by user. | ||
2064 | */ | ||
2065 | enum AVDiscard skip_idct; | ||
2066 | |||
2067 | /** | ||
2068 | * | ||
2069 | * - encoding: unused | ||
2070 | * - decoding: Set by user. | ||
2071 | */ | ||
2072 | enum AVDiscard skip_frame; | ||
2073 | |||
2074 | /** | ||
2075 | * | ||
2076 | * - encoding: Set by user. | ||
2077 | * - decoding: unused | ||
2078 | */ | ||
2079 | int bidir_refine; | ||
2080 | |||
2081 | /** | ||
2082 | * | ||
2083 | * - encoding: Set by user. | ||
2084 | * - decoding: unused | ||
2085 | */ | ||
2086 | int brd_scale; | ||
2087 | |||
2088 | /** | ||
2089 | * constant rate factor - quality-based VBR - values ~correspond to qps | ||
2090 | * - encoding: Set by user. | ||
2091 | * - decoding: unused | ||
2092 | */ | ||
2093 | float crf; | ||
2094 | |||
2095 | /** | ||
2096 | * constant quantization parameter rate control method | ||
2097 | * - encoding: Set by user. | ||
2098 | * - decoding: unused | ||
2099 | */ | ||
2100 | int cqp; | ||
2101 | |||
2102 | /** | ||
2103 | * minimum GOP size | ||
2104 | * - encoding: Set by user. | ||
2105 | * - decoding: unused | ||
2106 | */ | ||
2107 | int keyint_min; | ||
2108 | |||
2109 | /** | ||
2110 | * number of reference frames | ||
2111 | * - encoding: Set by user. | ||
2112 | * - decoding: Set by lavc. | ||
2113 | */ | ||
2114 | int refs; | ||
2115 | |||
2116 | /** | ||
2117 | * chroma qp offset from luma | ||
2118 | * - encoding: Set by user. | ||
2119 | * - decoding: unused | ||
2120 | */ | ||
2121 | int chromaoffset; | ||
2122 | |||
2123 | /** | ||
2124 | * Influences how often B-frames are used. | ||
2125 | * - encoding: Set by user. | ||
2126 | * - decoding: unused | ||
2127 | */ | ||
2128 | int bframebias; | ||
2129 | |||
2130 | /** | ||
2131 | * trellis RD quantization | ||
2132 | * - encoding: Set by user. | ||
2133 | * - decoding: unused | ||
2134 | */ | ||
2135 | int trellis; | ||
2136 | |||
2137 | /** | ||
2138 | * Reduce fluctuations in qp (before curve compression). | ||
2139 | * - encoding: Set by user. | ||
2140 | * - decoding: unused | ||
2141 | */ | ||
2142 | float complexityblur; | ||
2143 | |||
2144 | /** | ||
2145 | * in-loop deblocking filter alphac0 parameter | ||
2146 | * alpha is in the range -6...6 | ||
2147 | * - encoding: Set by user. | ||
2148 | * - decoding: unused | ||
2149 | */ | ||
2150 | int deblockalpha; | ||
2151 | |||
2152 | /** | ||
2153 | * in-loop deblocking filter beta parameter | ||
2154 | * beta is in the range -6...6 | ||
2155 | * - encoding: Set by user. | ||
2156 | * - decoding: unused | ||
2157 | */ | ||
2158 | int deblockbeta; | ||
2159 | |||
2160 | /** | ||
2161 | * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 | ||
2162 | * - encoding: Set by user. | ||
2163 | * - decoding: unused | ||
2164 | */ | ||
2165 | int partitions; | ||
2166 | #define X264_PART_I4X4 0x001 /* Analyze i4x4 */ | ||
2167 | #define X264_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ | ||
2168 | #define X264_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ | ||
2169 | #define X264_PART_P4X4 0x020 /* Analyze p8x4, p4x8, p4x4 */ | ||
2170 | #define X264_PART_B8X8 0x100 /* Analyze b16x8, b8x16 and b8x8 */ | ||
2171 | |||
2172 | /** | ||
2173 | * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto) | ||
2174 | * - encoding: Set by user. | ||
2175 | * - decoding: unused | ||
2176 | */ | ||
2177 | int directpred; | ||
2178 | |||
2179 | /** | ||
2180 | * Audio cutoff bandwidth (0 means "automatic") | ||
2181 | * - encoding: Set by user. | ||
2182 | * - decoding: unused | ||
2183 | */ | ||
2184 | int cutoff; | ||
2185 | |||
2186 | /** | ||
2187 | * Multiplied by qscale for each frame and added to scene_change_score. | ||
2188 | * - encoding: Set by user. | ||
2189 | * - decoding: unused | ||
2190 | */ | ||
2191 | int scenechange_factor; | ||
2192 | |||
2193 | /** | ||
2194 | * | ||
2195 | * Note: Value depends upon the compare function used for fullpel ME. | ||
2196 | * - encoding: Set by user. | ||
2197 | * - decoding: unused | ||
2198 | */ | ||
2199 | int mv0_threshold; | ||
2200 | |||
2201 | /** | ||
2202 | * Adjusts sensitivity of b_frame_strategy 1. | ||
2203 | * - encoding: Set by user. | ||
2204 | * - decoding: unused | ||
2205 | */ | ||
2206 | int b_sensitivity; | ||
2207 | |||
2208 | /** | ||
2209 | * - encoding: Set by user. | ||
2210 | * - decoding: unused | ||
2211 | */ | ||
2212 | int compression_level; | ||
2213 | #define FF_COMPRESSION_DEFAULT -1 | ||
2214 | |||
2215 | /** | ||
2216 | * Sets whether to use LPC mode - used by FLAC encoder. | ||
2217 | * - encoding: Set by user. | ||
2218 | * - decoding: unused | ||
2219 | */ | ||
2220 | int use_lpc; | ||
2221 | |||
2222 | /** | ||
2223 | * LPC coefficient precision - used by FLAC encoder | ||
2224 | * - encoding: Set by user. | ||
2225 | * - decoding: unused | ||
2226 | */ | ||
2227 | int lpc_coeff_precision; | ||
2228 | |||
2229 | /** | ||
2230 | * - encoding: Set by user. | ||
2231 | * - decoding: unused | ||
2232 | */ | ||
2233 | int min_prediction_order; | ||
2234 | |||
2235 | /** | ||
2236 | * - encoding: Set by user. | ||
2237 | * - decoding: unused | ||
2238 | */ | ||
2239 | int max_prediction_order; | ||
2240 | |||
2241 | /** | ||
2242 | * search method for selecting prediction order | ||
2243 | * - encoding: Set by user. | ||
2244 | * - decoding: unused | ||
2245 | */ | ||
2246 | int prediction_order_method; | ||
2247 | |||
2248 | /** | ||
2249 | * - encoding: Set by user. | ||
2250 | * - decoding: unused | ||
2251 | */ | ||
2252 | int min_partition_order; | ||
2253 | |||
2254 | /** | ||
2255 | * - encoding: Set by user. | ||
2256 | * - decoding: unused | ||
2257 | */ | ||
2258 | int max_partition_order; | ||
2259 | |||
2260 | /** | ||
2261 | * GOP timecode frame start number, in non drop frame format | ||
2262 | * - encoding: Set by user. | ||
2263 | * - decoding: unused | ||
2264 | */ | ||
2265 | int64_t timecode_frame_start; | ||
2266 | |||
2267 | #if LIBAVCODEC_VERSION_MAJOR < 53 | ||
2268 | /** | ||
2269 | * Decoder should decode to this many channels if it can (0 for default) | ||
2270 | * - encoding: unused | ||
2271 | * - decoding: Set by user. | ||
2272 | * @deprecated Deprecated in favor of request_channel_layout. | ||
2273 | */ | ||
2274 | int request_channels; | ||
2275 | #endif | ||
2276 | |||
2277 | /** | ||
2278 | * Percentage of dynamic range compression to be applied by the decoder. | ||
2279 | * The default value is 1.0, corresponding to full compression. | ||
2280 | * - encoding: unused | ||
2281 | * - decoding: Set by user. | ||
2282 | */ | ||
2283 | float drc_scale; | ||
2284 | |||
2285 | /** | ||
2286 | * opaque 64bit number (generally a PTS) that will be reordered and | ||
2287 | * output in AVFrame.reordered_opaque | ||
2288 | * - encoding: unused | ||
2289 | * - decoding: Set by user. | ||
2290 | */ | ||
2291 | int64_t reordered_opaque; | ||
2292 | |||
2293 | /** | ||
2294 | * Bits per sample/pixel of internal libavcodec pixel/sample format. | ||
2295 | * This field is applicable only when sample_fmt is SAMPLE_FMT_S32. | ||
2296 | * - encoding: set by user. | ||
2297 | * - decoding: set by libavcodec. | ||
2298 | */ | ||
2299 | int bits_per_raw_sample; | ||
2300 | |||
2301 | /** | ||
2302 | * Audio channel layout. | ||
2303 | * - encoding: set by user. | ||
2304 | * - decoding: set by libavcodec. | ||
2305 | */ | ||
2306 | int64_t channel_layout; | ||
2307 | |||
2308 | /** | ||
2309 | * Request decoder to use this channel layout if it can (0 for default) | ||
2310 | * - encoding: unused | ||
2311 | * - decoding: Set by user. | ||
2312 | */ | ||
2313 | int64_t request_channel_layout; | ||
2314 | |||
2315 | /** | ||
2316 | * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow. | ||
2317 | * - encoding: Set by user. | ||
2318 | * - decoding: unused. | ||
2319 | */ | ||
2320 | float rc_max_available_vbv_use; | ||
2321 | |||
2322 | /** | ||
2323 | * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow. | ||
2324 | * - encoding: Set by user. | ||
2325 | * - decoding: unused. | ||
2326 | */ | ||
2327 | float rc_min_vbv_overflow_use; | ||
2328 | |||
2329 | /** | ||
2330 | * Hardware accelerator in use | ||
2331 | * - encoding: unused. | ||
2332 | * - decoding: Set by libavcodec | ||
2333 | */ | ||
2334 | struct AVHWAccel *hwaccel; | ||
2335 | |||
2336 | /** | ||
2337 | * For some codecs, the time base is closer to the field rate than the frame rate. | ||
2338 | * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration | ||
2339 | * if no telecine is used ... | ||
2340 | * | ||
2341 | * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. | ||
2342 | */ | ||
2343 | int ticks_per_frame; | ||
2344 | |||
2345 | /** | ||
2346 | * Hardware accelerator context. | ||
2347 | * For some hardware accelerators, a global context needs to be | ||
2348 | * provided by the user. In that case, this holds display-dependent | ||
2349 | * data FFmpeg cannot instantiate itself. Please refer to the | ||
2350 | * FFmpeg HW accelerator documentation to know how to fill this | ||
2351 | * is. e.g. for VA API, this is a struct vaapi_context. | ||
2352 | * - encoding: unused | ||
2353 | * - decoding: Set by user | ||
2354 | */ | ||
2355 | void *hwaccel_context; | ||
2356 | } AVCodecContext; | ||
2357 | |||
2358 | /** | ||
2359 | * AVCodec. | ||
2360 | */ | ||
2361 | typedef struct AVCodec { | ||
2362 | /** | ||
2363 | * Name of the codec implementation. | ||
2364 | * The name is globally unique among encoders and among decoders (but an | ||
2365 | * encoder and a decoder can share the same name). | ||
2366 | * This is the primary way to find a codec from the user perspective. | ||
2367 | */ | ||
2368 | const char *name; | ||
2369 | enum CodecType type; | ||
2370 | enum CodecID id; | ||
2371 | int priv_data_size; | ||
2372 | int (*init)(AVCodecContext *); | ||
2373 | int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data); | ||
2374 | int (*close)(AVCodecContext *); | ||
2375 | int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, | ||
2376 | const uint8_t *buf, int buf_size); | ||
2377 | /** | ||
2378 | * Codec capabilities. | ||
2379 | * see CODEC_CAP_* | ||
2380 | */ | ||
2381 | int capabilities; | ||
2382 | struct AVCodec *next; | ||
2383 | /** | ||
2384 | * Flush buffers. | ||
2385 | * Will be called when seeking | ||
2386 | */ | ||
2387 | void (*flush)(AVCodecContext *); | ||
2388 | const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} | ||
2389 | const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 | ||
2390 | /** | ||
2391 | * Descriptive name for the codec, meant to be more human readable than \p name. | ||
2392 | * You \e should use the NULL_IF_CONFIG_SMALL() macro to define it. | ||
2393 | */ | ||
2394 | const char *long_name; | ||
2395 | const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 | ||
2396 | const enum SampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 | ||
2397 | const int64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 | ||
2398 | } AVCodec; | ||
2399 | |||
2400 | /** | ||
2401 | * AVHWAccel. | ||
2402 | */ | ||
2403 | typedef struct AVHWAccel { | ||
2404 | /** | ||
2405 | * Name of the hardware accelerated codec. | ||
2406 | * The name is globally unique among encoders and among decoders (but an | ||
2407 | * encoder and a decoder can share the same name). | ||
2408 | */ | ||
2409 | const char *name; | ||
2410 | |||
2411 | /** | ||
2412 | * Type of codec implemented by the hardware accelerator. | ||
2413 | * | ||
2414 | * See CODEC_TYPE_xxx | ||
2415 | */ | ||
2416 | enum CodecType type; | ||
2417 | |||
2418 | /** | ||
2419 | * Codec implemented by the hardware accelerator. | ||
2420 | * | ||
2421 | * See CODEC_ID_xxx | ||
2422 | */ | ||
2423 | enum CodecID id; | ||
2424 | |||
2425 | /** | ||
2426 | * Supported pixel format. | ||
2427 | * | ||
2428 | * Only hardware accelerated formats are supported here. | ||
2429 | */ | ||
2430 | enum PixelFormat pix_fmt; | ||
2431 | |||
2432 | /** | ||
2433 | * Hardware accelerated codec capabilities. | ||
2434 | * see FF_HWACCEL_CODEC_CAP_* | ||
2435 | */ | ||
2436 | int capabilities; | ||
2437 | |||
2438 | struct AVHWAccel *next; | ||
2439 | |||
2440 | /** | ||
2441 | * Called at the beginning of each frame or field picture. | ||
2442 | * | ||
2443 | * Meaningful frame information (codec specific) is guaranteed to | ||
2444 | * be parsed at this point. This function is mandatory. | ||
2445 | * | ||
2446 | * Note that \p buf can be NULL along with \p buf_size set to 0. | ||
2447 | * Otherwise, this means the whole frame is available at this point. | ||
2448 | * | ||
2449 | * @param avctx the codec context | ||
2450 | * @param buf the frame data buffer base | ||
2451 | * @param buf_size the size of the frame in bytes | ||
2452 | * @return zero if successful, a negative value otherwise | ||
2453 | */ | ||
2454 | int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); | ||
2455 | |||
2456 | /** | ||
2457 | * Callback for each slice. | ||
2458 | * | ||
2459 | * Meaningful slice information (codec specific) is guaranteed to | ||
2460 | * be parsed at this point. This function is mandatory. | ||
2461 | * | ||
2462 | * @param avctx the codec context | ||
2463 | * @param buf the slice data buffer base | ||
2464 | * @param buf_size the size of the slice in bytes | ||
2465 | * @return zero if successful, a negative value otherwise | ||
2466 | */ | ||
2467 | int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); | ||
2468 | |||
2469 | /** | ||
2470 | * Called at the end of each frame or field picture. | ||
2471 | * | ||
2472 | * The whole picture is parsed at this point and can now be sent | ||
2473 | * to the hardware accelerator. This function is mandatory. | ||
2474 | * | ||
2475 | * @param avctx the codec context | ||
2476 | * @return zero if successful, a negative value otherwise | ||
2477 | */ | ||
2478 | int (*end_frame)(AVCodecContext *avctx); | ||
2479 | |||
2480 | /** | ||
2481 | * Size of HW accelerator private data. | ||
2482 | * | ||
2483 | * Private data is allocated with av_mallocz() before | ||
2484 | * AVCodecContext.get_buffer() and deallocated after | ||
2485 | * AVCodecContext.release_buffer(). | ||
2486 | */ | ||
2487 | int priv_data_size; | ||
2488 | } AVHWAccel; | ||
2489 | |||
2490 | /** | ||
2491 | * four components are given, that's all. | ||
2492 | * the last component is alpha | ||
2493 | */ | ||
2494 | typedef struct AVPicture { | ||
2495 | uint8_t *data[4]; | ||
2496 | int linesize[4]; ///< number of bytes per line | ||
2497 | } AVPicture; | ||
2498 | |||
2499 | /** | ||
2500 | * AVPaletteControl | ||
2501 | * This structure defines a method for communicating palette changes | ||
2502 | * between and demuxer and a decoder. | ||
2503 | * | ||
2504 | * @deprecated Use AVPacket to send palette changes instead. | ||
2505 | * This is totally broken. | ||
2506 | */ | ||
2507 | #define AVPALETTE_SIZE 1024 | ||
2508 | #define AVPALETTE_COUNT 256 | ||
2509 | typedef struct AVPaletteControl { | ||
2510 | |||
2511 | /* Demuxer sets this to 1 to indicate the palette has changed; | ||
2512 | * decoder resets to 0. */ | ||
2513 | int palette_changed; | ||
2514 | |||
2515 | /* 4-byte ARGB palette entries, stored in native byte order; note that | ||
2516 | * the individual palette components should be on a 8-bit scale; if | ||
2517 | * the palette data comes from an IBM VGA native format, the component | ||
2518 | * data is probably 6 bits in size and needs to be scaled. */ | ||
2519 | unsigned int palette[AVPALETTE_COUNT]; | ||
2520 | |||
2521 | } AVPaletteControl attribute_deprecated; | ||
2522 | |||
2523 | enum AVSubtitleType { | ||
2524 | SUBTITLE_NONE, | ||
2525 | |||
2526 | SUBTITLE_BITMAP, ///< A bitmap, pict will be set | ||
2527 | |||
2528 | /** | ||
2529 | * Plain text, the text field must be set by the decoder and is | ||
2530 | * authoritative. ass and pict fields may contain approximations. | ||
2531 | */ | ||
2532 | SUBTITLE_TEXT, | ||
2533 | |||
2534 | /** | ||
2535 | * Formatted text, the ass field must be set by the decoder and is | ||
2536 | * authoritative. pict and text fields may contain approximations. | ||
2537 | */ | ||
2538 | SUBTITLE_ASS, | ||
2539 | }; | ||
2540 | |||
2541 | typedef struct AVSubtitleRect { | ||
2542 | int x; ///< top left corner of pict, undefined when pict is not set | ||
2543 | int y; ///< top left corner of pict, undefined when pict is not set | ||
2544 | int w; ///< width of pict, undefined when pict is not set | ||
2545 | int h; ///< height of pict, undefined when pict is not set | ||
2546 | int nb_colors; ///< number of colors in pict, undefined when pict is not set | ||
2547 | |||
2548 | /** | ||
2549 | * data+linesize for the bitmap of this subtitle. | ||
2550 | * can be set for text/ass as well once they where rendered | ||
2551 | */ | ||
2552 | AVPicture pict; | ||
2553 | enum AVSubtitleType type; | ||
2554 | |||
2555 | char *text; ///< 0 terminated plain UTF-8 text | ||
2556 | |||
2557 | /** | ||
2558 | * 0 terminated ASS/SSA compatible event line. | ||
2559 | * The pressentation of this is unaffected by the other values in this | ||
2560 | * struct. | ||
2561 | */ | ||
2562 | char *ass; | ||
2563 | } AVSubtitleRect; | ||
2564 | |||
2565 | typedef struct AVSubtitle { | ||
2566 | uint16_t format; /* 0 = graphics */ | ||
2567 | uint32_t start_display_time; /* relative to packet pts, in ms */ | ||
2568 | uint32_t end_display_time; /* relative to packet pts, in ms */ | ||
2569 | unsigned num_rects; | ||
2570 | AVSubtitleRect **rects; | ||
2571 | } AVSubtitle; | ||
2572 | |||
2573 | |||
2574 | /* resample.c */ | ||
2575 | |||
2576 | struct ReSampleContext; | ||
2577 | struct AVResampleContext; | ||
2578 | |||
2579 | typedef struct ReSampleContext ReSampleContext; | ||
2580 | |||
2581 | #if LIBAVCODEC_VERSION_MAJOR < 53 | ||
2582 | /** | ||
2583 | * @deprecated Use av_audio_resample_init() instead. | ||
2584 | */ | ||
2585 | attribute_deprecated ReSampleContext *audio_resample_init(int output_channels, int input_channels, | ||
2586 | int output_rate, int input_rate); | ||
2587 | #endif | ||
2588 | /** | ||
2589 | * Initializes audio resampling context | ||
2590 | * | ||
2591 | * @param output_channels number of output channels | ||
2592 | * @param input_channels number of input channels | ||
2593 | * @param output_rate output sample rate | ||
2594 | * @param input_rate input sample rate | ||
2595 | * @param sample_fmt_out requested output sample format | ||
2596 | * @param sample_fmt_in input sample format | ||
2597 | * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq | ||
2598 | * @param log2_phase_count log2 of the number of entries in the polyphase filterbank | ||
2599 | * @param linear If 1 then the used FIR filter will be linearly interpolated | ||
2600 | between the 2 closest, if 0 the closest will be used | ||
2601 | * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate | ||
2602 | * @return allocated ReSampleContext, NULL if error occured | ||
2603 | */ | ||
2604 | ReSampleContext *av_audio_resample_init(int output_channels, int input_channels, | ||
2605 | int output_rate, int input_rate, | ||
2606 | enum SampleFormat sample_fmt_out, | ||
2607 | enum SampleFormat sample_fmt_in, | ||
2608 | int filter_length, int log2_phase_count, | ||
2609 | int linear, double cutoff); | ||
2610 | |||
2611 | int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples); | ||
2612 | void audio_resample_close(ReSampleContext *s); | ||
2613 | |||
2614 | |||
2615 | /** | ||
2616 | * Initializes an audio resampler. | ||
2617 | * Note, if either rate is not an integer then simply scale both rates up so they are. | ||
2618 | * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq | ||
2619 | * @param log2_phase_count log2 of the number of entries in the polyphase filterbank | ||
2620 | * @param linear If 1 then the used FIR filter will be linearly interpolated | ||
2621 | between the 2 closest, if 0 the closest will be used | ||
2622 | * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate | ||
2623 | */ | ||
2624 | struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff); | ||
2625 | |||
2626 | /** | ||
2627 | * resamples. | ||
2628 | * @param src an array of unconsumed samples | ||
2629 | * @param consumed the number of samples of src which have been consumed are returned here | ||
2630 | * @param src_size the number of unconsumed samples available | ||
2631 | * @param dst_size the amount of space in samples available in dst | ||
2632 | * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. | ||
2633 | * @return the number of samples written in dst or -1 if an error occurred | ||
2634 | */ | ||
2635 | int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx); | ||
2636 | |||
2637 | |||
2638 | /** | ||
2639 | * Compensates samplerate/timestamp drift. The compensation is done by changing | ||
2640 | * the resampler parameters, so no audible clicks or similar distortions occur | ||
2641 | * @param compensation_distance distance in output samples over which the compensation should be performed | ||
2642 | * @param sample_delta number of output samples which should be output less | ||
2643 | * | ||
2644 | * example: av_resample_compensate(c, 10, 500) | ||
2645 | * here instead of 510 samples only 500 samples would be output | ||
2646 | * | ||
2647 | * note, due to rounding the actual compensation might be slightly different, | ||
2648 | * especially if the compensation_distance is large and the in_rate used during init is small | ||
2649 | */ | ||
2650 | void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); | ||
2651 | void av_resample_close(struct AVResampleContext *c); | ||
2652 | |||
2653 | /** | ||
2654 | * Allocate memory for a picture. Call avpicture_free to free it. | ||
2655 | * | ||
2656 | * @param picture the picture to be filled in | ||
2657 | * @param pix_fmt the format of the picture | ||
2658 | * @param width the width of the picture | ||
2659 | * @param height the height of the picture | ||
2660 | * @return zero if successful, a negative value if not | ||
2661 | */ | ||
2662 | int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height); | ||
2663 | |||
2664 | /** | ||
2665 | * Free a picture previously allocated by avpicture_alloc(). | ||
2666 | * | ||
2667 | * @param picture the AVPicture to be freed | ||
2668 | */ | ||
2669 | void avpicture_free(AVPicture *picture); | ||
2670 | |||
2671 | /** | ||
2672 | * Fill in the AVPicture fields. | ||
2673 | * The fields of the given AVPicture are filled in by using the 'ptr' address | ||
2674 | * which points to the image data buffer. Depending on the specified picture | ||
2675 | * format, one or multiple image data pointers and line sizes will be set. | ||
2676 | * If a planar format is specified, several pointers will be set pointing to | ||
2677 | * the different picture planes and the line sizes of the different planes | ||
2678 | * will be stored in the lines_sizes array. | ||
2679 | * | ||
2680 | * @param picture AVPicture whose fields are to be filled in | ||
2681 | * @param ptr Buffer which will contain or contains the actual image data | ||
2682 | * @param pix_fmt The format in which the picture data is stored. | ||
2683 | * @param width the width of the image in pixels | ||
2684 | * @param height the height of the image in pixels | ||
2685 | * @return size of the image data in bytes | ||
2686 | */ | ||
2687 | int avpicture_fill(AVPicture *picture, uint8_t *ptr, | ||
2688 | int pix_fmt, int width, int height); | ||
2689 | int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height, | ||
2690 | unsigned char *dest, int dest_size); | ||
2691 | |||
2692 | /** | ||
2693 | * Calculate the size in bytes that a picture of the given width and height | ||
2694 | * would occupy if stored in the given picture format. | ||
2695 | * | ||
2696 | * @param pix_fmt the given picture format | ||
2697 | * @param width the width of the image | ||
2698 | * @param height the height of the image | ||
2699 | * @return Image data size in bytes | ||
2700 | */ | ||
2701 | int avpicture_get_size(int pix_fmt, int width, int height); | ||
2702 | void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift); | ||
2703 | const char *avcodec_get_pix_fmt_name(int pix_fmt); | ||
2704 | void avcodec_set_dimensions(AVCodecContext *s, int width, int height); | ||
2705 | enum PixelFormat avcodec_get_pix_fmt(const char* name); | ||
2706 | unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p); | ||
2707 | |||
2708 | #define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */ | ||
2709 | #define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */ | ||
2710 | #define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */ | ||
2711 | #define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */ | ||
2712 | #define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */ | ||
2713 | #define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */ | ||
2714 | |||
2715 | /** | ||
2716 | * Computes what kind of losses will occur when converting from one specific | ||
2717 | * pixel format to another. | ||
2718 | * When converting from one pixel format to another, information loss may occur. | ||
2719 | * For example, when converting from RGB24 to GRAY, the color information will | ||
2720 | * be lost. Similarly, other losses occur when converting from some formats to | ||
2721 | * other formats. These losses can involve loss of chroma, but also loss of | ||
2722 | * resolution, loss of color depth, loss due to the color space conversion, loss | ||
2723 | * of the alpha bits or loss due to color quantization. | ||
2724 | * avcodec_get_fix_fmt_loss() informs you about the various types of losses | ||
2725 | * which will occur when converting from one pixel format to another. | ||
2726 | * | ||
2727 | * @param[in] dst_pix_fmt destination pixel format | ||
2728 | * @param[in] src_pix_fmt source pixel format | ||
2729 | * @param[in] has_alpha Whether the source pixel format alpha channel is used. | ||
2730 | * @return Combination of flags informing you what kind of losses will occur. | ||
2731 | */ | ||
2732 | int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt, | ||
2733 | int has_alpha); | ||
2734 | |||
2735 | /** | ||
2736 | * Finds the best pixel format to convert to given a certain source pixel | ||
2737 | * format. When converting from one pixel format to another, information loss | ||
2738 | * may occur. For example, when converting from RGB24 to GRAY, the color | ||
2739 | * information will be lost. Similarly, other losses occur when converting from | ||
2740 | * some formats to other formats. avcodec_find_best_pix_fmt() searches which of | ||
2741 | * the given pixel formats should be used to suffer the least amount of loss. | ||
2742 | * The pixel formats from which it chooses one, are determined by the | ||
2743 | * \p pix_fmt_mask parameter. | ||
2744 | * | ||
2745 | * @code | ||
2746 | * src_pix_fmt = PIX_FMT_YUV420P; | ||
2747 | * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24); | ||
2748 | * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); | ||
2749 | * @endcode | ||
2750 | * | ||
2751 | * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from | ||
2752 | * @param[in] src_pix_fmt source pixel format | ||
2753 | * @param[in] has_alpha Whether the source pixel format alpha channel is used. | ||
2754 | * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. | ||
2755 | * @return The best pixel format to convert to or -1 if none was found. | ||
2756 | */ | ||
2757 | int avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, int src_pix_fmt, | ||
2758 | int has_alpha, int *loss_ptr); | ||
2759 | |||
2760 | |||
2761 | /** | ||
2762 | * Print in buf the string corresponding to the pixel format with | ||
2763 | * number pix_fmt, or an header if pix_fmt is negative. | ||
2764 | * | ||
2765 | * @param[in] buf the buffer where to write the string | ||
2766 | * @param[in] buf_size the size of buf | ||
2767 | * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or | ||
2768 | * a negative value to print the corresponding header. | ||
2769 | * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1. | ||
2770 | */ | ||
2771 | void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt); | ||
2772 | |||
2773 | #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */ | ||
2774 | #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */ | ||
2775 | |||
2776 | /** | ||
2777 | * Tell if an image really has transparent alpha values. | ||
2778 | * @return ored mask of FF_ALPHA_xxx constants | ||
2779 | */ | ||
2780 | int img_get_alpha_info(const AVPicture *src, | ||
2781 | int pix_fmt, int width, int height); | ||
2782 | |||
2783 | /* deinterlace a picture */ | ||
2784 | /* deinterlace - if not supported return -1 */ | ||
2785 | int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, | ||
2786 | int pix_fmt, int width, int height); | ||
2787 | |||
2788 | /* external high level API */ | ||
2789 | |||
2790 | /** | ||
2791 | * If c is NULL, returns the first registered codec, | ||
2792 | * if c is non-NULL, returns the next registered codec after c, | ||
2793 | * or NULL if c is the last one. | ||
2794 | */ | ||
2795 | AVCodec *av_codec_next(AVCodec *c); | ||
2796 | |||
2797 | /** | ||
2798 | * Returns the LIBAVCODEC_VERSION_INT constant. | ||
2799 | */ | ||
2800 | unsigned avcodec_version(void); | ||
2801 | |||
2802 | /** | ||
2803 | * Initializes libavcodec. | ||
2804 | * | ||
2805 | * @warning This function \e must be called before any other libavcodec | ||
2806 | * function. | ||
2807 | */ | ||
2808 | void avcodec_init(void); | ||
2809 | |||
2810 | #if LIBAVCODEC_VERSION_MAJOR < 53 | ||
2811 | /** | ||
2812 | * @deprecated Deprecated in favor of avcodec_register(). | ||
2813 | */ | ||
2814 | attribute_deprecated void register_avcodec(AVCodec *codec); | ||
2815 | #endif | ||
2816 | |||
2817 | /** | ||
2818 | * Register the codec \p codec and initialize libavcodec. | ||
2819 | * | ||
2820 | * @see avcodec_init() | ||
2821 | */ | ||
2822 | void avcodec_register(AVCodec *codec); | ||
2823 | |||
2824 | /** | ||
2825 | * Finds a registered encoder with a matching codec ID. | ||
2826 | * | ||
2827 | * @param id CodecID of the requested encoder | ||
2828 | * @return An encoder if one was found, NULL otherwise. | ||
2829 | */ | ||
2830 | AVCodec *avcodec_find_encoder(enum CodecID id); | ||
2831 | |||
2832 | /** | ||
2833 | * Finds a registered encoder with the specified name. | ||
2834 | * | ||
2835 | * @param name name of the requested encoder | ||
2836 | * @return An encoder if one was found, NULL otherwise. | ||
2837 | */ | ||
2838 | AVCodec *avcodec_find_encoder_by_name(const char *name); | ||
2839 | |||
2840 | /** | ||
2841 | * Finds a registered decoder with a matching codec ID. | ||
2842 | * | ||
2843 | * @param id CodecID of the requested decoder | ||
2844 | * @return A decoder if one was found, NULL otherwise. | ||
2845 | */ | ||
2846 | AVCodec *avcodec_find_decoder(enum CodecID id); | ||
2847 | |||
2848 | /** | ||
2849 | * Finds a registered decoder with the specified name. | ||
2850 | * | ||
2851 | * @param name name of the requested decoder | ||
2852 | * @return A decoder if one was found, NULL otherwise. | ||
2853 | */ | ||
2854 | AVCodec *avcodec_find_decoder_by_name(const char *name); | ||
2855 | void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); | ||
2856 | |||
2857 | /** | ||
2858 | * Sets the fields of the given AVCodecContext to default values. | ||
2859 | * | ||
2860 | * @param s The AVCodecContext of which the fields should be set to default values. | ||
2861 | */ | ||
2862 | void avcodec_get_context_defaults(AVCodecContext *s); | ||
2863 | |||
2864 | /** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! | ||
2865 | * we WILL change its arguments and name a few times! */ | ||
2866 | void avcodec_get_context_defaults2(AVCodecContext *s, enum CodecType); | ||
2867 | |||
2868 | /** | ||
2869 | * Allocates an AVCodecContext and sets its fields to default values. The | ||
2870 | * resulting struct can be deallocated by simply calling av_free(). | ||
2871 | * | ||
2872 | * @return An AVCodecContext filled with default values or NULL on failure. | ||
2873 | * @see avcodec_get_context_defaults | ||
2874 | */ | ||
2875 | AVCodecContext *avcodec_alloc_context(void); | ||
2876 | |||
2877 | /** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! | ||
2878 | * we WILL change its arguments and name a few times! */ | ||
2879 | AVCodecContext *avcodec_alloc_context2(enum CodecType); | ||
2880 | |||
2881 | /** | ||
2882 | * Sets the fields of the given AVFrame to default values. | ||
2883 | * | ||
2884 | * @param pic The AVFrame of which the fields should be set to default values. | ||
2885 | */ | ||
2886 | void avcodec_get_frame_defaults(AVFrame *pic); | ||
2887 | |||
2888 | /** | ||
2889 | * Allocates an AVFrame and sets its fields to default values. The resulting | ||
2890 | * struct can be deallocated by simply calling av_free(). | ||
2891 | * | ||
2892 | * @return An AVFrame filled with default values or NULL on failure. | ||
2893 | * @see avcodec_get_frame_defaults | ||
2894 | */ | ||
2895 | AVFrame *avcodec_alloc_frame(void); | ||
2896 | |||
2897 | int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic); | ||
2898 | void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic); | ||
2899 | int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic); | ||
2900 | void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height); | ||
2901 | |||
2902 | /** | ||
2903 | * Checks if the given dimension of a picture is valid, meaning that all | ||
2904 | * bytes of the picture can be addressed with a signed int. | ||
2905 | * | ||
2906 | * @param[in] w Width of the picture. | ||
2907 | * @param[in] h Height of the picture. | ||
2908 | * @return Zero if valid, a negative value if invalid. | ||
2909 | */ | ||
2910 | int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h); | ||
2911 | enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt); | ||
2912 | |||
2913 | int avcodec_thread_init(AVCodecContext *s, int thread_count); | ||
2914 | void avcodec_thread_free(AVCodecContext *s); | ||
2915 | int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size); | ||
2916 | int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size); | ||
2917 | //FIXME func typedef | ||
2918 | |||
2919 | /** | ||
2920 | * Initializes the AVCodecContext to use the given AVCodec. Prior to using this | ||
2921 | * function the context has to be allocated. | ||
2922 | * | ||
2923 | * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), | ||
2924 | * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for | ||
2925 | * retrieving a codec. | ||
2926 | * | ||
2927 | * @warning This function is not thread safe! | ||
2928 | * | ||
2929 | * @code | ||
2930 | * avcodec_register_all(); | ||
2931 | * codec = avcodec_find_decoder(CODEC_ID_H264); | ||
2932 | * if (!codec) | ||
2933 | * exit(1); | ||
2934 | * | ||
2935 | * context = avcodec_alloc_context(); | ||
2936 | * | ||
2937 | * if (avcodec_open(context, codec) < 0) | ||
2938 | * exit(1); | ||
2939 | * @endcode | ||
2940 | * | ||
2941 | * @param avctx The context which will be set up to use the given codec. | ||
2942 | * @param codec The codec to use within the context. | ||
2943 | * @return zero on success, a negative value on error | ||
2944 | * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder | ||
2945 | */ | ||
2946 | int avcodec_open(AVCodecContext *avctx, AVCodec *codec); | ||
2947 | |||
2948 | /** | ||
2949 | * Decodes an audio frame from \p buf into \p samples. | ||
2950 | * The avcodec_decode_audio2() function decodes an audio frame from the input | ||
2951 | * buffer \p buf of size \p buf_size. To decode it, it makes use of the | ||
2952 | * audio codec which was coupled with \p avctx using avcodec_open(). The | ||
2953 | * resulting decoded frame is stored in output buffer \p samples. If no frame | ||
2954 | * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the | ||
2955 | * decompressed frame size in \e bytes. | ||
2956 | * | ||
2957 | * @warning You \e must set \p frame_size_ptr to the allocated size of the | ||
2958 | * output buffer before calling avcodec_decode_audio2(). | ||
2959 | * | ||
2960 | * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than | ||
2961 | * the actual read bytes because some optimized bitstream readers read 32 or 64 | ||
2962 | * bits at once and could read over the end. | ||
2963 | * | ||
2964 | * @warning The end of the input buffer \p buf should be set to 0 to ensure that | ||
2965 | * no overreading happens for damaged MPEG streams. | ||
2966 | * | ||
2967 | * @note You might have to align the input buffer \p buf and output buffer \p | ||
2968 | * samples. The alignment requirements depend on the CPU: On some CPUs it isn't | ||
2969 | * necessary at all, on others it won't work at all if not aligned and on others | ||
2970 | * it will work but it will have an impact on performance. In practice, the | ||
2971 | * bitstream should have 4 byte alignment at minimum and all sample data should | ||
2972 | * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If | ||
2973 | * the linesize is not a multiple of 16 then there's no sense in aligning the | ||
2974 | * start of the buffer to 16. | ||
2975 | * | ||
2976 | * @param avctx the codec context | ||
2977 | * @param[out] samples the output buffer | ||
2978 | * @param[in,out] frame_size_ptr the output buffer size in bytes | ||
2979 | * @param[in] buf the input buffer | ||
2980 | * @param[in] buf_size the input buffer size in bytes | ||
2981 | * @return On error a negative value is returned, otherwise the number of bytes | ||
2982 | * used or zero if no frame could be decompressed. | ||
2983 | */ | ||
2984 | int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, | ||
2985 | int *frame_size_ptr, | ||
2986 | const uint8_t *buf, int buf_size); | ||
2987 | |||
2988 | /** | ||
2989 | * Decodes a video frame from \p buf into \p picture. | ||
2990 | * The avcodec_decode_video() function decodes a video frame from the input | ||
2991 | * buffer \p buf of size \p buf_size. To decode it, it makes use of the | ||
2992 | * video codec which was coupled with \p avctx using avcodec_open(). The | ||
2993 | * resulting decoded frame is stored in \p picture. | ||
2994 | * | ||
2995 | * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than | ||
2996 | * the actual read bytes because some optimized bitstream readers read 32 or 64 | ||
2997 | * bits at once and could read over the end. | ||
2998 | * | ||
2999 | * @warning The end of the input buffer \p buf should be set to 0 to ensure that | ||
3000 | * no overreading happens for damaged MPEG streams. | ||
3001 | * | ||
3002 | * @note You might have to align the input buffer \p buf and output buffer \p | ||
3003 | * samples. The alignment requirements depend on the CPU: on some CPUs it isn't | ||
3004 | * necessary at all, on others it won't work at all if not aligned and on others | ||
3005 | * it will work but it will have an impact on performance. In practice, the | ||
3006 | * bitstream should have 4 byte alignment at minimum and all sample data should | ||
3007 | * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If | ||
3008 | * the linesize is not a multiple of 16 then there's no sense in aligning the | ||
3009 | * start of the buffer to 16. | ||
3010 | * | ||
3011 | * @note Some codecs have a delay between input and output, these need to be | ||
3012 | * feeded with buf=NULL, buf_size=0 at the end to return the remaining frames. | ||
3013 | * | ||
3014 | * @param avctx the codec context | ||
3015 | * @param[out] picture The AVFrame in which the decoded video frame will be stored. | ||
3016 | * @param[in] buf the input buffer | ||
3017 | * @param[in] buf_size the size of the input buffer in bytes | ||
3018 | * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. | ||
3019 | * @return On error a negative value is returned, otherwise the number of bytes | ||
3020 | * used or zero if no frame could be decompressed. | ||
3021 | */ | ||
3022 | int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, | ||
3023 | int *got_picture_ptr, | ||
3024 | const uint8_t *buf, int buf_size); | ||
3025 | |||
3026 | /* Decode a subtitle message. Return -1 if error, otherwise return the | ||
3027 | * number of bytes used. If no subtitle could be decompressed, | ||
3028 | * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */ | ||
3029 | int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub, | ||
3030 | int *got_sub_ptr, | ||
3031 | const uint8_t *buf, int buf_size); | ||
3032 | int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, | ||
3033 | int *data_size_ptr, | ||
3034 | uint8_t *buf, int buf_size); | ||
3035 | |||
3036 | /** | ||
3037 | * Encodes an audio frame from \p samples into \p buf. | ||
3038 | * The avcodec_encode_audio() function encodes an audio frame from the input | ||
3039 | * buffer \p samples. To encode it, it makes use of the audio codec which was | ||
3040 | * coupled with \p avctx using avcodec_open(). The resulting encoded frame is | ||
3041 | * stored in output buffer \p buf. | ||
3042 | * | ||
3043 | * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large. | ||
3044 | * | ||
3045 | * @param avctx the codec context | ||
3046 | * @param[out] buf the output buffer | ||
3047 | * @param[in] buf_size the output buffer size | ||
3048 | * @param[in] samples the input buffer containing the samples | ||
3049 | * The number of samples read from this buffer is frame_size*channels, | ||
3050 | * both of which are defined in \p avctx. | ||
3051 | * For PCM audio the number of samples read from \p samples is equal to | ||
3052 | * \p buf_size * input_sample_size / output_sample_size. | ||
3053 | * @return On error a negative value is returned, on success zero or the number | ||
3054 | * of bytes used to encode the data read from the input buffer. | ||
3055 | */ | ||
3056 | int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, | ||
3057 | const short *samples); | ||
3058 | |||
3059 | /** | ||
3060 | * Encodes a video frame from \p pict into \p buf. | ||
3061 | * The avcodec_encode_video() function encodes a video frame from the input | ||
3062 | * \p pict. To encode it, it makes use of the video codec which was coupled with | ||
3063 | * \p avctx using avcodec_open(). The resulting encoded bytes representing the | ||
3064 | * frame are stored in the output buffer \p buf. The input picture should be | ||
3065 | * stored using a specific format, namely \c avctx.pix_fmt. | ||
3066 | * | ||
3067 | * @param avctx the codec context | ||
3068 | * @param[out] buf the output buffer for the bitstream of encoded frame | ||
3069 | * @param[in] buf_size the size of the output buffer in bytes | ||
3070 | * @param[in] pict the input picture to encode | ||
3071 | * @return On error a negative value is returned, on success zero or the number | ||
3072 | * of bytes used from the output buffer. | ||
3073 | */ | ||
3074 | int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, | ||
3075 | const AVFrame *pict); | ||
3076 | int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, | ||
3077 | const AVSubtitle *sub); | ||
3078 | |||
3079 | int avcodec_close(AVCodecContext *avctx); | ||
3080 | |||
3081 | /** | ||
3082 | * Register all the codecs, parsers and bitstream filters which were enabled at | ||
3083 | * configuration time. If you do not call this function you can select exactly | ||
3084 | * which formats you want to support, by using the individual registration | ||
3085 | * functions. | ||
3086 | * | ||
3087 | * @see avcodec_register | ||
3088 | * @see av_register_codec_parser | ||
3089 | * @see av_register_bitstream_filter | ||
3090 | */ | ||
3091 | void avcodec_register_all(void); | ||
3092 | |||
3093 | /** | ||
3094 | * Flush buffers, should be called when seeking or when switching to a different stream. | ||
3095 | */ | ||
3096 | void avcodec_flush_buffers(AVCodecContext *avctx); | ||
3097 | |||
3098 | void avcodec_default_free_buffers(AVCodecContext *s); | ||
3099 | |||
3100 | /* misc useful functions */ | ||
3101 | |||
3102 | /** | ||
3103 | * Returns a single letter to describe the given picture type \p pict_type. | ||
3104 | * | ||
3105 | * @param[in] pict_type the picture type | ||
3106 | * @return A single character representing the picture type. | ||
3107 | */ | ||
3108 | char av_get_pict_type_char(int pict_type); | ||
3109 | |||
3110 | /** | ||
3111 | * Returns codec bits per sample. | ||
3112 | * | ||
3113 | * @param[in] codec_id the codec | ||
3114 | * @return Number of bits per sample or zero if unknown for the given codec. | ||
3115 | */ | ||
3116 | int av_get_bits_per_sample(enum CodecID codec_id); | ||
3117 | |||
3118 | /** | ||
3119 | * Returns sample format bits per sample. | ||
3120 | * | ||
3121 | * @param[in] sample_fmt the sample format | ||
3122 | * @return Number of bits per sample or zero if unknown for the given sample format. | ||
3123 | */ | ||
3124 | int av_get_bits_per_sample_format(enum SampleFormat sample_fmt); | ||
3125 | |||
3126 | /* frame parsing */ | ||
3127 | typedef struct AVCodecParserContext { | ||
3128 | void *priv_data; | ||
3129 | struct AVCodecParser *parser; | ||
3130 | int64_t frame_offset; /* offset of the current frame */ | ||
3131 | int64_t cur_offset; /* current offset | ||
3132 | (incremented by each av_parser_parse()) */ | ||
3133 | int64_t next_frame_offset; /* offset of the next frame */ | ||
3134 | /* video info */ | ||
3135 | int pict_type; /* XXX: Put it back in AVCodecContext. */ | ||
3136 | /** | ||
3137 | * This field is used for proper frame duration computation in lavf. | ||
3138 | * It signals, how much longer the frame duration of the current frame | ||
3139 | * is compared to normal frame duration. | ||
3140 | * | ||
3141 | * frame_duration = (1 + repeat_pict) * time_base | ||
3142 | * | ||
3143 | * It is used by codecs like H.264 to display telecined material. | ||
3144 | */ | ||
3145 | int repeat_pict; /* XXX: Put it back in AVCodecContext. */ | ||
3146 | int64_t pts; /* pts of the current frame */ | ||
3147 | int64_t dts; /* dts of the current frame */ | ||
3148 | |||
3149 | /* private data */ | ||
3150 | int64_t last_pts; | ||
3151 | int64_t last_dts; | ||
3152 | int fetch_timestamp; | ||
3153 | |||
3154 | #define AV_PARSER_PTS_NB 4 | ||
3155 | int cur_frame_start_index; | ||
3156 | int64_t cur_frame_offset[AV_PARSER_PTS_NB]; | ||
3157 | int64_t cur_frame_pts[AV_PARSER_PTS_NB]; | ||
3158 | int64_t cur_frame_dts[AV_PARSER_PTS_NB]; | ||
3159 | |||
3160 | int flags; | ||
3161 | #define PARSER_FLAG_COMPLETE_FRAMES 0x0001 | ||
3162 | |||
3163 | int64_t offset; ///< byte offset from starting packet start | ||
3164 | int64_t cur_frame_end[AV_PARSER_PTS_NB]; | ||
3165 | |||
3166 | /*! | ||
3167 | * Set by parser to 1 for key frames and 0 for non-key frames. | ||
3168 | * It is initialized to -1, so if the parser doesn't set this flag, | ||
3169 | * old-style fallback using FF_I_TYPE picture type as key frames | ||
3170 | * will be used. | ||
3171 | */ | ||
3172 | int key_frame; | ||
3173 | |||
3174 | /** | ||
3175 | * Time difference in stream time base units from the pts of this | ||
3176 | * packet to the point at which the output from the decoder has converged | ||
3177 | * independent from the availability of previous frames. That is, the | ||
3178 | * frames are virtually identical no matter if decoding started from | ||
3179 | * the very first frame or from this keyframe. | ||
3180 | * Is AV_NOPTS_VALUE if unknown. | ||
3181 | * This field is not the display duration of the current frame. | ||
3182 | * | ||
3183 | * The purpose of this field is to allow seeking in streams that have no | ||
3184 | * keyframes in the conventional sense. It corresponds to the | ||
3185 | * recovery point SEI in H.264 and match_time_delta in NUT. It is also | ||
3186 | * essential for some types of subtitle streams to ensure that all | ||
3187 | * subtitles are correctly displayed after seeking. | ||
3188 | */ | ||
3189 | int64_t convergence_duration; | ||
3190 | |||
3191 | // Timestamp generation support: | ||
3192 | /** | ||
3193 | * Synchronization point for start of timestamp generation. | ||
3194 | * | ||
3195 | * Set to >0 for sync point, 0 for no sync point and <0 for undefined | ||
3196 | * (default). | ||
3197 | * | ||
3198 | * For example, this corresponds to presence of H.264 buffering period | ||
3199 | * SEI message. | ||
3200 | */ | ||
3201 | int dts_sync_point; | ||
3202 | |||
3203 | /** | ||
3204 | * Offset of the current timestamp against last timestamp sync point in | ||
3205 | * units of AVCodecContext.time_base. | ||
3206 | * | ||
3207 | * Set to INT_MIN when dts_sync_point unused. Otherwise, it must | ||
3208 | * contain a valid timestamp offset. | ||
3209 | * | ||
3210 | * Note that the timestamp of sync point has usually a nonzero | ||
3211 | * dts_ref_dts_delta, which refers to the previous sync point. Offset of | ||
3212 | * the next frame after timestamp sync point will be usually 1. | ||
3213 | * | ||
3214 | * For example, this corresponds to H.264 cpb_removal_delay. | ||
3215 | */ | ||
3216 | int dts_ref_dts_delta; | ||
3217 | |||
3218 | /** | ||
3219 | * Presentation delay of current frame in units of AVCodecContext.time_base. | ||
3220 | * | ||
3221 | * Set to INT_MIN when dts_sync_point unused. Otherwise, it must | ||
3222 | * contain valid non-negative timestamp delta (presentation time of a frame | ||
3223 | * must not lie in the past). | ||
3224 | * | ||
3225 | * This delay represents the difference between decoding and presentation | ||
3226 | * time of the frame. | ||
3227 | * | ||
3228 | * For example, this corresponds to H.264 dpb_output_delay. | ||
3229 | */ | ||
3230 | int pts_dts_delta; | ||
3231 | |||
3232 | /** | ||
3233 | * Position of the packet in file. | ||
3234 | * | ||
3235 | * Analogous to cur_frame_pts/dts | ||
3236 | */ | ||
3237 | int64_t cur_frame_pos[AV_PARSER_PTS_NB]; | ||
3238 | |||
3239 | /** | ||
3240 | * Byte position of currently parsed frame in stream. | ||
3241 | */ | ||
3242 | int64_t pos; | ||
3243 | |||
3244 | /** | ||
3245 | * Previous frame byte position. | ||
3246 | */ | ||
3247 | int64_t last_pos; | ||
3248 | } AVCodecParserContext; | ||
3249 | |||
3250 | typedef struct AVCodecParser { | ||
3251 | int codec_ids[5]; /* several codec IDs are permitted */ | ||
3252 | int priv_data_size; | ||
3253 | int (*parser_init)(AVCodecParserContext *s); | ||
3254 | int (*parser_parse)(AVCodecParserContext *s, | ||
3255 | AVCodecContext *avctx, | ||
3256 | const uint8_t **poutbuf, int *poutbuf_size, | ||
3257 | const uint8_t *buf, int buf_size); | ||
3258 | void (*parser_close)(AVCodecParserContext *s); | ||
3259 | int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size); | ||
3260 | struct AVCodecParser *next; | ||
3261 | } AVCodecParser; | ||
3262 | |||
3263 | AVCodecParser *av_parser_next(AVCodecParser *c); | ||
3264 | |||
3265 | void av_register_codec_parser(AVCodecParser *parser); | ||
3266 | AVCodecParserContext *av_parser_init(int codec_id); | ||
3267 | |||
3268 | attribute_deprecated | ||
3269 | int av_parser_parse(AVCodecParserContext *s, | ||
3270 | AVCodecContext *avctx, | ||
3271 | uint8_t **poutbuf, int *poutbuf_size, | ||
3272 | const uint8_t *buf, int buf_size, | ||
3273 | int64_t pts, int64_t dts); | ||
3274 | |||
3275 | /** | ||
3276 | * Parse a packet. | ||
3277 | * | ||
3278 | * @param s parser context. | ||
3279 | * @param avctx codec context. | ||
3280 | * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. | ||
3281 | * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. | ||
3282 | * @param buf input buffer. | ||
3283 | * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). | ||
3284 | * @param pts input presentation timestamp. | ||
3285 | * @param dts input decoding timestamp. | ||
3286 | * @param pos input byte position in stream. | ||
3287 | * @return the number of bytes of the input bitstream used. | ||
3288 | * | ||
3289 | * Example: | ||
3290 | * @code | ||
3291 | * while(in_len){ | ||
3292 | * len = av_parser_parse2(myparser, AVCodecContext, &data, &size, | ||
3293 | * in_data, in_len, | ||
3294 | * pts, dts, pos); | ||
3295 | * in_data += len; | ||
3296 | * in_len -= len; | ||
3297 | * | ||
3298 | * if(size) | ||
3299 | * decode_frame(data, size); | ||
3300 | * } | ||
3301 | * @endcode | ||
3302 | */ | ||
3303 | int av_parser_parse2(AVCodecParserContext *s, | ||
3304 | AVCodecContext *avctx, | ||
3305 | uint8_t **poutbuf, int *poutbuf_size, | ||
3306 | const uint8_t *buf, int buf_size, | ||
3307 | int64_t pts, int64_t dts, | ||
3308 | int64_t pos); | ||
3309 | |||
3310 | int av_parser_change(AVCodecParserContext *s, | ||
3311 | AVCodecContext *avctx, | ||
3312 | uint8_t **poutbuf, int *poutbuf_size, | ||
3313 | const uint8_t *buf, int buf_size, int keyframe); | ||
3314 | void av_parser_close(AVCodecParserContext *s); | ||
3315 | |||
3316 | |||
3317 | typedef struct AVBitStreamFilterContext { | ||
3318 | void *priv_data; | ||
3319 | struct AVBitStreamFilter *filter; | ||
3320 | AVCodecParserContext *parser; | ||
3321 | struct AVBitStreamFilterContext *next; | ||
3322 | } AVBitStreamFilterContext; | ||
3323 | |||
3324 | |||
3325 | typedef struct AVBitStreamFilter { | ||
3326 | const char *name; | ||
3327 | int priv_data_size; | ||
3328 | int (*filter)(AVBitStreamFilterContext *bsfc, | ||
3329 | AVCodecContext *avctx, const char *args, | ||
3330 | uint8_t **poutbuf, int *poutbuf_size, | ||
3331 | const uint8_t *buf, int buf_size, int keyframe); | ||
3332 | void (*close)(AVBitStreamFilterContext *bsfc); | ||
3333 | struct AVBitStreamFilter *next; | ||
3334 | } AVBitStreamFilter; | ||
3335 | |||
3336 | void av_register_bitstream_filter(AVBitStreamFilter *bsf); | ||
3337 | AVBitStreamFilterContext *av_bitstream_filter_init(const char *name); | ||
3338 | int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, | ||
3339 | AVCodecContext *avctx, const char *args, | ||
3340 | uint8_t **poutbuf, int *poutbuf_size, | ||
3341 | const uint8_t *buf, int buf_size, int keyframe); | ||
3342 | void av_bitstream_filter_close(AVBitStreamFilterContext *bsf); | ||
3343 | |||
3344 | AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f); | ||
3345 | |||
3346 | /* memory */ | ||
3347 | |||
3348 | /** | ||
3349 | * Reallocates the given block if it is not large enough, otherwise it | ||
3350 | * does nothing. | ||
3351 | * | ||
3352 | * @see av_realloc | ||
3353 | */ | ||
3354 | void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size); | ||
3355 | |||
3356 | /** | ||
3357 | * Copy image 'src' to 'dst'. | ||
3358 | */ | ||
3359 | void av_picture_copy(AVPicture *dst, const AVPicture *src, | ||
3360 | int pix_fmt, int width, int height); | ||
3361 | |||
3362 | /** | ||
3363 | * Crop image top and left side. | ||
3364 | */ | ||
3365 | int av_picture_crop(AVPicture *dst, const AVPicture *src, | ||
3366 | int pix_fmt, int top_band, int left_band); | ||
3367 | |||
3368 | /** | ||
3369 | * Pad image. | ||
3370 | */ | ||
3371 | int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt, | ||
3372 | int padtop, int padbottom, int padleft, int padright, int *color); | ||
3373 | |||
3374 | unsigned int av_xiphlacing(unsigned char *s, unsigned int v); | ||
3375 | |||
3376 | /** | ||
3377 | * Parses \p str and put in \p width_ptr and \p height_ptr the detected values. | ||
3378 | * | ||
3379 | * @return 0 in case of a successful parsing, a negative value otherwise | ||
3380 | * @param[in] str the string to parse: it has to be a string in the format | ||
3381 | * <width>x<height> or a valid video frame size abbreviation. | ||
3382 | * @param[in,out] width_ptr pointer to the variable which will contain the detected | ||
3383 | * frame width value | ||
3384 | * @param[in,out] height_ptr pointer to the variable which will contain the detected | ||
3385 | * frame height value | ||
3386 | */ | ||
3387 | int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str); | ||
3388 | |||
3389 | /** | ||
3390 | * Parses \p str and put in \p frame_rate the detected values. | ||
3391 | * | ||
3392 | * @return 0 in case of a successful parsing, a negative value otherwise | ||
3393 | * @param[in] str the string to parse: it has to be a string in the format | ||
3394 | * <frame_rate_num>/<frame_rate_den>, a float number or a valid video rate abbreviation | ||
3395 | * @param[in,out] frame_rate pointer to the AVRational which will contain the detected | ||
3396 | * frame rate | ||
3397 | */ | ||
3398 | int av_parse_video_frame_rate(AVRational *frame_rate, const char *str); | ||
3399 | |||
3400 | /* error handling */ | ||
3401 | #if EINVAL > 0 | ||
3402 | #define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */ | ||
3403 | #define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */ | ||
3404 | #else | ||
3405 | /* Some platforms have E* and errno already negated. */ | ||
3406 | #define AVERROR(e) (e) | ||
3407 | #define AVUNERROR(e) (e) | ||
3408 | #endif | ||
3409 | #define AVERROR_UNKNOWN AVERROR(EINVAL) /**< unknown error */ | ||
3410 | #define AVERROR_IO AVERROR(EIO) /**< I/O error */ | ||
3411 | #define AVERROR_NUMEXPECTED AVERROR(EDOM) /**< Number syntax expected in filename. */ | ||
3412 | #define AVERROR_INVALIDDATA AVERROR(EINVAL) /**< invalid data found */ | ||
3413 | #define AVERROR_NOMEM AVERROR(ENOMEM) /**< not enough memory */ | ||
3414 | #define AVERROR_NOFMT AVERROR(EILSEQ) /**< unknown format */ | ||
3415 | #define AVERROR_NOTSUPP AVERROR(ENOSYS) /**< Operation not supported. */ | ||
3416 | #define AVERROR_NOENT AVERROR(ENOENT) /**< No such file or directory. */ | ||
3417 | #define AVERROR_EOF AVERROR(EPIPE) /**< End of file. */ | ||
3418 | #define AVERROR_PATCHWELCOME -MKTAG('P','A','W','E') /**< Not yet implemented in FFmpeg. Patches welcome. */ | ||
3419 | |||
3420 | /** | ||
3421 | * Registers the hardware accelerator \p hwaccel. | ||
3422 | */ | ||
3423 | void av_register_hwaccel(AVHWAccel *hwaccel); | ||
3424 | |||
3425 | /** | ||
3426 | * If hwaccel is NULL, returns the first registered hardware accelerator, | ||
3427 | * if hwaccel is non-NULL, returns the next registered hardware accelerator | ||
3428 | * after hwaccel, or NULL if hwaccel is the last one. | ||
3429 | */ | ||
3430 | AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel); | ||
3431 | |||
3432 | #endif /* AVCODEC_AVCODEC_H */ | ||