2773c50ac9bdfb8ae783c19e7d1085ddad4a46e2
[libav.git] / libavcodec / avcodec.h
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 St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVCODEC_H
22 #define AVCODEC_H
23
24 /**
25 * @file avcodec.h
26 * external api header.
27 */
28
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 #include "avutil.h"
35 #include <sys/types.h> /* size_t */
36
37 #define AV_STRINGIFY(s) AV_TOSTRING(s)
38 #define AV_TOSTRING(s) #s
39
40 #define LIBAVCODEC_VERSION_INT ((51<<16)+(32<<8)+0)
41 #define LIBAVCODEC_VERSION 51.32.0
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 enum CodecID {
51 CODEC_ID_NONE,
52 CODEC_ID_MPEG1VIDEO,
53 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
54 CODEC_ID_MPEG2VIDEO_XVMC,
55 CODEC_ID_H261,
56 CODEC_ID_H263,
57 CODEC_ID_RV10,
58 CODEC_ID_RV20,
59 CODEC_ID_MJPEG,
60 CODEC_ID_MJPEGB,
61 CODEC_ID_LJPEG,
62 CODEC_ID_SP5X,
63 CODEC_ID_JPEGLS,
64 CODEC_ID_MPEG4,
65 CODEC_ID_RAWVIDEO,
66 CODEC_ID_MSMPEG4V1,
67 CODEC_ID_MSMPEG4V2,
68 CODEC_ID_MSMPEG4V3,
69 CODEC_ID_WMV1,
70 CODEC_ID_WMV2,
71 CODEC_ID_H263P,
72 CODEC_ID_H263I,
73 CODEC_ID_FLV1,
74 CODEC_ID_SVQ1,
75 CODEC_ID_SVQ3,
76 CODEC_ID_DVVIDEO,
77 CODEC_ID_HUFFYUV,
78 CODEC_ID_CYUV,
79 CODEC_ID_H264,
80 CODEC_ID_INDEO3,
81 CODEC_ID_VP3,
82 CODEC_ID_THEORA,
83 CODEC_ID_ASV1,
84 CODEC_ID_ASV2,
85 CODEC_ID_FFV1,
86 CODEC_ID_4XM,
87 CODEC_ID_VCR1,
88 CODEC_ID_CLJR,
89 CODEC_ID_MDEC,
90 CODEC_ID_ROQ,
91 CODEC_ID_INTERPLAY_VIDEO,
92 CODEC_ID_XAN_WC3,
93 CODEC_ID_XAN_WC4,
94 CODEC_ID_RPZA,
95 CODEC_ID_CINEPAK,
96 CODEC_ID_WS_VQA,
97 CODEC_ID_MSRLE,
98 CODEC_ID_MSVIDEO1,
99 CODEC_ID_IDCIN,
100 CODEC_ID_8BPS,
101 CODEC_ID_SMC,
102 CODEC_ID_FLIC,
103 CODEC_ID_TRUEMOTION1,
104 CODEC_ID_VMDVIDEO,
105 CODEC_ID_MSZH,
106 CODEC_ID_ZLIB,
107 CODEC_ID_QTRLE,
108 CODEC_ID_SNOW,
109 CODEC_ID_TSCC,
110 CODEC_ID_ULTI,
111 CODEC_ID_QDRAW,
112 CODEC_ID_VIXL,
113 CODEC_ID_QPEG,
114 CODEC_ID_XVID,
115 CODEC_ID_PNG,
116 CODEC_ID_PPM,
117 CODEC_ID_PBM,
118 CODEC_ID_PGM,
119 CODEC_ID_PGMYUV,
120 CODEC_ID_PAM,
121 CODEC_ID_FFVHUFF,
122 CODEC_ID_RV30,
123 CODEC_ID_RV40,
124 CODEC_ID_VC1,
125 CODEC_ID_WMV3,
126 CODEC_ID_LOCO,
127 CODEC_ID_WNV1,
128 CODEC_ID_AASC,
129 CODEC_ID_INDEO2,
130 CODEC_ID_FRAPS,
131 CODEC_ID_TRUEMOTION2,
132 CODEC_ID_BMP,
133 CODEC_ID_CSCD,
134 CODEC_ID_MMVIDEO,
135 CODEC_ID_ZMBV,
136 CODEC_ID_AVS,
137 CODEC_ID_SMACKVIDEO,
138 CODEC_ID_NUV,
139 CODEC_ID_KMVC,
140 CODEC_ID_FLASHSV,
141 CODEC_ID_CAVS,
142 CODEC_ID_JPEG2000,
143 CODEC_ID_VMNC,
144 CODEC_ID_VP5,
145 CODEC_ID_VP6,
146 CODEC_ID_VP6F,
147 CODEC_ID_TARGA,
148 CODEC_ID_DSICINVIDEO,
149 CODEC_ID_TIERTEXSEQVIDEO,
150 CODEC_ID_TIFF,
151 CODEC_ID_GIF,
152 CODEC_ID_FFH264,
153
154 /* various pcm "codecs" */
155 CODEC_ID_PCM_S16LE= 0x10000,
156 CODEC_ID_PCM_S16BE,
157 CODEC_ID_PCM_U16LE,
158 CODEC_ID_PCM_U16BE,
159 CODEC_ID_PCM_S8,
160 CODEC_ID_PCM_U8,
161 CODEC_ID_PCM_MULAW,
162 CODEC_ID_PCM_ALAW,
163 CODEC_ID_PCM_S32LE,
164 CODEC_ID_PCM_S32BE,
165 CODEC_ID_PCM_U32LE,
166 CODEC_ID_PCM_U32BE,
167 CODEC_ID_PCM_S24LE,
168 CODEC_ID_PCM_S24BE,
169 CODEC_ID_PCM_U24LE,
170 CODEC_ID_PCM_U24BE,
171 CODEC_ID_PCM_S24DAUD,
172
173 /* various adpcm codecs */
174 CODEC_ID_ADPCM_IMA_QT= 0x11000,
175 CODEC_ID_ADPCM_IMA_WAV,
176 CODEC_ID_ADPCM_IMA_DK3,
177 CODEC_ID_ADPCM_IMA_DK4,
178 CODEC_ID_ADPCM_IMA_WS,
179 CODEC_ID_ADPCM_IMA_SMJPEG,
180 CODEC_ID_ADPCM_MS,
181 CODEC_ID_ADPCM_4XM,
182 CODEC_ID_ADPCM_XA,
183 CODEC_ID_ADPCM_ADX,
184 CODEC_ID_ADPCM_EA,
185 CODEC_ID_ADPCM_G726,
186 CODEC_ID_ADPCM_CT,
187 CODEC_ID_ADPCM_SWF,
188 CODEC_ID_ADPCM_YAMAHA,
189 CODEC_ID_ADPCM_SBPRO_4,
190 CODEC_ID_ADPCM_SBPRO_3,
191 CODEC_ID_ADPCM_SBPRO_2,
192
193 /* AMR */
194 CODEC_ID_AMR_NB= 0x12000,
195 CODEC_ID_AMR_WB,
196
197 /* RealAudio codecs*/
198 CODEC_ID_RA_144= 0x13000,
199 CODEC_ID_RA_288,
200
201 /* various DPCM codecs */
202 CODEC_ID_ROQ_DPCM= 0x14000,
203 CODEC_ID_INTERPLAY_DPCM,
204 CODEC_ID_XAN_DPCM,
205 CODEC_ID_SOL_DPCM,
206
207 CODEC_ID_MP2= 0x15000,
208 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
209 CODEC_ID_AAC,
210 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
211 CODEC_ID_MPEG4AAC,
212 #endif
213 CODEC_ID_AC3,
214 CODEC_ID_DTS,
215 CODEC_ID_VORBIS,
216 CODEC_ID_DVAUDIO,
217 CODEC_ID_WMAV1,
218 CODEC_ID_WMAV2,
219 CODEC_ID_MACE3,
220 CODEC_ID_MACE6,
221 CODEC_ID_VMDAUDIO,
222 CODEC_ID_SONIC,
223 CODEC_ID_SONIC_LS,
224 CODEC_ID_FLAC,
225 CODEC_ID_MP3ADU,
226 CODEC_ID_MP3ON4,
227 CODEC_ID_SHORTEN,
228 CODEC_ID_ALAC,
229 CODEC_ID_WESTWOOD_SND1,
230 CODEC_ID_GSM,
231 CODEC_ID_QDM2,
232 CODEC_ID_COOK,
233 CODEC_ID_TRUESPEECH,
234 CODEC_ID_TTA,
235 CODEC_ID_SMACKAUDIO,
236 CODEC_ID_QCELP,
237 CODEC_ID_WAVPACK,
238 CODEC_ID_DSICINAUDIO,
239 CODEC_ID_IMC,
240 CODEC_ID_MUSEPACK7,
241 CODEC_ID_MLP,
242
243 /* subtitle codecs */
244 CODEC_ID_DVD_SUBTITLE= 0x17000,
245 CODEC_ID_DVB_SUBTITLE,
246
247 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
248 stream (only used by libavformat) */
249 };
250
251 /* CODEC_ID_MP3LAME is absolete */
252 #define CODEC_ID_MP3LAME CODEC_ID_MP3
253
254 enum CodecType {
255 CODEC_TYPE_UNKNOWN = -1,
256 CODEC_TYPE_VIDEO,
257 CODEC_TYPE_AUDIO,
258 CODEC_TYPE_DATA,
259 CODEC_TYPE_SUBTITLE,
260 };
261
262 /* currently unused, may be used if 24/32 bits samples ever supported */
263 /* all in native endian */
264 enum SampleFormat {
265 SAMPLE_FMT_NONE = -1,
266 SAMPLE_FMT_U8, ///< unsigned 8 bits
267 SAMPLE_FMT_S16, ///< signed 16 bits
268 SAMPLE_FMT_S24, ///< signed 24 bits
269 SAMPLE_FMT_S32, ///< signed 32 bits
270 SAMPLE_FMT_FLT, ///< float
271 };
272
273 /* in bytes */
274 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
275
276 /**
277 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
278 * this is mainly needed because some optimized bitstream readers read
279 * 32 or 64 bit at once and could read over the end<br>
280 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
281 * MPEG bitstreams could cause overread and segfault
282 */
283 #define FF_INPUT_BUFFER_PADDING_SIZE 8
284
285 /**
286 * minimum encoding buffer size.
287 * used to avoid some checks during header writing
288 */
289 #define FF_MIN_BUFFER_SIZE 16384
290
291 /* motion estimation type, EPZS by default */
292 enum Motion_Est_ID {
293 ME_ZERO = 1,
294 ME_FULL,
295 ME_LOG,
296 ME_PHODS,
297 ME_EPZS,
298 ME_X1,
299 ME_HEX,
300 ME_UMH,
301 ME_ITER,
302 };
303
304 enum AVDiscard{
305 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
306 AVDISCARD_NONE =-16, ///< discard nothing
307 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
308 AVDISCARD_NONREF = 8, ///< discard all non reference
309 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
310 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
311 AVDISCARD_ALL = 48, ///< discard all
312 };
313
314 typedef struct RcOverride{
315 int start_frame;
316 int end_frame;
317 int qscale; // if this is 0 then quality_factor will be used instead
318 float quality_factor;
319 } RcOverride;
320
321 #define FF_MAX_B_FRAMES 16
322
323 /* encoding support
324 these flags can be passed in AVCodecContext.flags before initing
325 Note: not everything is supported yet.
326 */
327
328 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
329 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
330 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
331 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
332 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
333 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
334 /* parent program gurantees that the input for b-frame containing streams is not written to
335 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
336 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
337 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
338 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
339 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
340 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
341 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
342 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
343 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
344 of only at frame boundaries */
345 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
346 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
347 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
348 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
349 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
350 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
351 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
352 /* Fx : Flag for h263+ extra options */
353 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
354 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
355 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
356 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
357 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
358 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
359 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
360 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
361 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
362 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
363 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
364 #define CODEC_FLAG_CLOSED_GOP ((int)0x80000000)
365 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
366 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
367 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
368 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
369 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
370 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
371 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock
372 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
373 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
374 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
375 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
376 #define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< use MPEG-2 intra VLC table
377 #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
378 #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format
379 #define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skiping
380
381 /* Unsupported options :
382 * Syntax Arithmetic coding (SAC)
383 * Reference Picture Selection
384 * Independant Segment Decoding */
385 /* /Fx */
386 /* codec capabilities */
387
388 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
389 /**
390 * Codec uses get_buffer() for allocating buffers.
391 * direct rendering method 1
392 */
393 #define CODEC_CAP_DR1 0x0002
394 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
395 used */
396 #define CODEC_CAP_PARSE_ONLY 0x0004
397 #define CODEC_CAP_TRUNCATED 0x0008
398 /* codec can export data for HW decoding (XvMC) */
399 #define CODEC_CAP_HWACCEL 0x0010
400 /**
401 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
402 * if this is not set, the codec is guranteed to never be feeded with NULL data
403 */
404 #define CODEC_CAP_DELAY 0x0020
405 /**
406 * Codec can be fed a final frame with a smaller size.
407 * This can be used to prevent truncation of the last audio samples.
408 */
409 #define CODEC_CAP_SMALL_LAST_FRAME 0x0040
410
411 //the following defines may change, don't expect compatibility if you use them
412 #define MB_TYPE_INTRA4x4 0x0001
413 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
414 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
415 #define MB_TYPE_16x16 0x0008
416 #define MB_TYPE_16x8 0x0010
417 #define MB_TYPE_8x16 0x0020
418 #define MB_TYPE_8x8 0x0040
419 #define MB_TYPE_INTERLACED 0x0080
420 #define MB_TYPE_DIRECT2 0x0100 //FIXME
421 #define MB_TYPE_ACPRED 0x0200
422 #define MB_TYPE_GMC 0x0400
423 #define MB_TYPE_SKIP 0x0800
424 #define MB_TYPE_P0L0 0x1000
425 #define MB_TYPE_P1L0 0x2000
426 #define MB_TYPE_P0L1 0x4000
427 #define MB_TYPE_P1L1 0x8000
428 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
429 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
430 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
431 #define MB_TYPE_QUANT 0x00010000
432 #define MB_TYPE_CBP 0x00020000
433 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
434
435 /**
436 * Pan Scan area.
437 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
438 */
439 typedef struct AVPanScan{
440 /**
441 * id.
442 * - encoding: set by user.
443 * - decoding: set by lavc
444 */
445 int id;
446
447 /**
448 * width and height in 1/16 pel
449 * - encoding: set by user.
450 * - decoding: set by lavc
451 */
452 int width;
453 int height;
454
455 /**
456 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
457 * - encoding: set by user.
458 * - decoding: set by lavc
459 */
460 int16_t position[3][2];
461 }AVPanScan;
462
463 #define FF_COMMON_FRAME \
464 /**\
465 * pointer to the picture planes.\
466 * this might be different from the first allocated byte\
467 * - encoding: \
468 * - decoding: \
469 */\
470 uint8_t *data[4];\
471 int linesize[4];\
472 /**\
473 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
474 * this isn't used by lavc unless the default get/release_buffer() is used\
475 * - encoding: \
476 * - decoding: \
477 */\
478 uint8_t *base[4];\
479 /**\
480 * 1 -> keyframe, 0-> not\
481 * - encoding: set by lavc\
482 * - decoding: set by lavc\
483 */\
484 int key_frame;\
485 \
486 /**\
487 * picture type of the frame, see ?_TYPE below.\
488 * - encoding: set by lavc for coded_picture (and set by user for input)\
489 * - decoding: set by lavc\
490 */\
491 int pict_type;\
492 \
493 /**\
494 * presentation timestamp in time_base units (time when frame should be shown to user)\
495 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
496 * - encoding: MUST be set by user\
497 * - decoding: set by lavc\
498 */\
499 int64_t pts;\
500 \
501 /**\
502 * picture number in bitstream order.\
503 * - encoding: set by\
504 * - decoding: set by lavc\
505 */\
506 int coded_picture_number;\
507 /**\
508 * picture number in display order.\
509 * - encoding: set by\
510 * - decoding: set by lavc\
511 */\
512 int display_picture_number;\
513 \
514 /**\
515 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
516 * - encoding: set by lavc for coded_picture (and set by user for input)\
517 * - decoding: set by lavc\
518 */\
519 int quality; \
520 \
521 /**\
522 * buffer age (1->was last buffer and dint change, 2->..., ...).\
523 * set to INT_MAX if the buffer has not been used yet \
524 * - encoding: unused\
525 * - decoding: MUST be set by get_buffer()\
526 */\
527 int age;\
528 \
529 /**\
530 * is this picture used as reference\
531 * - encoding: unused\
532 * - decoding: set by lavc (before get_buffer() call))\
533 */\
534 int reference;\
535 \
536 /**\
537 * QP table\
538 * - encoding: unused\
539 * - decoding: set by lavc\
540 */\
541 int8_t *qscale_table;\
542 /**\
543 * QP store stride\
544 * - encoding: unused\
545 * - decoding: set by lavc\
546 */\
547 int qstride;\
548 \
549 /**\
550 * mbskip_table[mb]>=1 if MB didnt change\
551 * stride= mb_width = (width+15)>>4\
552 * - encoding: unused\
553 * - decoding: set by lavc\
554 */\
555 uint8_t *mbskip_table;\
556 \
557 /**\
558 * Motion vector table.\
559 * @code\
560 * example:\
561 * int mv_sample_log2= 4 - motion_subsample_log2;\
562 * int mb_width= (width+15)>>4;\
563 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
564 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
565 * @endcode\
566 * - encoding: set by user\
567 * - decoding: set by lavc\
568 */\
569 int16_t (*motion_val[2])[2];\
570 \
571 /**\
572 * Macroblock type table\
573 * mb_type_base + mb_width + 2\
574 * - encoding: set by user\
575 * - decoding: set by lavc\
576 */\
577 uint32_t *mb_type;\
578 \
579 /**\
580 * log2 of the size of the block which a single vector in motion_val represents: \
581 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
582 * - encoding: unused\
583 * - decoding: set by lavc\
584 */\
585 uint8_t motion_subsample_log2;\
586 \
587 /**\
588 * for some private data of the user\
589 * - encoding: unused\
590 * - decoding: set by user\
591 */\
592 void *opaque;\
593 \
594 /**\
595 * error\
596 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
597 * - decoding: unused\
598 */\
599 uint64_t error[4];\
600 \
601 /**\
602 * type of the buffer (to keep track of who has to dealloc data[*])\
603 * - encoding: set by the one who allocs it\
604 * - decoding: set by the one who allocs it\
605 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
606 */\
607 int type;\
608 \
609 /**\
610 * when decoding, this signal how much the picture must be delayed.\
611 * extra_delay = repeat_pict / (2*fps)\
612 * - encoding: unused\
613 * - decoding: set by lavc\
614 */\
615 int repeat_pict;\
616 \
617 /**\
618 * \
619 */\
620 int qscale_type;\
621 \
622 /**\
623 * The content of the picture is interlaced.\
624 * - encoding: set by user\
625 * - decoding: set by lavc (default 0)\
626 */\
627 int interlaced_frame;\
628 \
629 /**\
630 * if the content is interlaced, is top field displayed first.\
631 * - encoding: set by user\
632 * - decoding: set by lavc\
633 */\
634 int top_field_first;\
635 \
636 /**\
637 * Pan scan.\
638 * - encoding: set by user\
639 * - decoding: set by lavc\
640 */\
641 AVPanScan *pan_scan;\
642 \
643 /**\
644 * tell user application that palette has changed from previous frame.\
645 * - encoding: ??? (no palette-enabled encoder yet)\
646 * - decoding: set by lavc (default 0)\
647 */\
648 int palette_has_changed;\
649 \
650 /**\
651 * Codec suggestion on buffer type if != 0\
652 * - encoding: unused\
653 * - decoding: set by lavc (before get_buffer() call))\
654 */\
655 int buffer_hints;\
656 \
657 /**\
658 * DCT coeffitients\
659 * - encoding: unused\
660 * - decoding: set by lavc\
661 */\
662 short *dct_coeff;\
663 \
664 /**\
665 * Motion referece frame index\
666 * - encoding: set by user\
667 * - decoding: set by lavc\
668 */\
669 int8_t *ref_index[2];
670
671 #define FF_QSCALE_TYPE_MPEG1 0
672 #define FF_QSCALE_TYPE_MPEG2 1
673 #define FF_QSCALE_TYPE_H264 2
674
675 #define FF_BUFFER_TYPE_INTERNAL 1
676 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
677 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
678 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
679
680
681 #define FF_I_TYPE 1 // Intra
682 #define FF_P_TYPE 2 // Predicted
683 #define FF_B_TYPE 3 // Bi-dir predicted
684 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
685 #define FF_SI_TYPE 5
686 #define FF_SP_TYPE 6
687
688 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
689 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
690 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
691 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
692
693 /**
694 * Audio Video Frame.
695 */
696 typedef struct AVFrame {
697 FF_COMMON_FRAME
698 } AVFrame;
699
700 #define DEFAULT_FRAME_RATE_BASE 1001000
701
702 /**
703 * main external api structure.
704 */
705 typedef struct AVCodecContext {
706 /**
707 * Info on struct for av_log
708 * - set by avcodec_alloc_context
709 */
710 AVClass *av_class;
711 /**
712 * the average bitrate.
713 * - encoding: set by user. unused for constant quantizer encoding
714 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
715 */
716 int bit_rate;
717
718 /**
719 * number of bits the bitstream is allowed to diverge from the reference.
720 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
721 * - encoding: set by user. unused for constant quantizer encoding
722 * - decoding: unused
723 */
724 int bit_rate_tolerance;
725
726 /**
727 * CODEC_FLAG_*.
728 * - encoding: set by user.
729 * - decoding: set by user.
730 */
731 int flags;
732
733 /**
734 * some codecs needs additionnal format info. It is stored here
735 * - encoding: set by user.
736 * - decoding: set by lavc. (FIXME is this ok?)
737 */
738 int sub_id;
739
740 /**
741 * motion estimation algorithm used for video coding.
742 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
743 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
744 * - encoding: MUST be set by user.
745 * - decoding: unused
746 */
747 int me_method;
748
749 /**
750 * some codecs need / can use extra-data like huffman tables.
751 * mjpeg: huffman tables
752 * rv10: additional flags
753 * mpeg4: global headers (they can be in the bitstream or here)
754 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
755 * then extradata_size to avoid prolems if its read with the bitstream reader
756 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
757 * - encoding: set/allocated/freed by lavc.
758 * - decoding: set/allocated/freed by user.
759 */
760 uint8_t *extradata;
761 int extradata_size;
762
763 /**
764 * this is the fundamental unit of time (in seconds) in terms
765 * of which frame timestamps are represented. for fixed-fps content,
766 * timebase should be 1/framerate and timestamp increments should be
767 * identically 1.
768 * - encoding: MUST be set by user
769 * - decoding: set by lavc.
770 */
771 AVRational time_base;
772
773 /* video only */
774 /**
775 * picture width / height.
776 * - encoding: MUST be set by user.
777 * - decoding: set by lavc.
778 * Note, for compatibility its possible to set this instead of
779 * coded_width/height before decoding
780 */
781 int width, height;
782
783 #define FF_ASPECT_EXTENDED 15
784
785 /**
786 * the number of pictures in a group of pitures, or 0 for intra_only.
787 * - encoding: set by user.
788 * - decoding: unused
789 */
790 int gop_size;
791
792 /**
793 * pixel format, see PIX_FMT_xxx.
794 * - encoding: set by user.
795 * - decoding: set by lavc.
796 */
797 enum PixelFormat pix_fmt;
798
799 /**
800 * Frame rate emulation. If not zero lower layer (i.e. format handler)
801 * has to read frames at native frame rate.
802 * - encoding: set by user.
803 * - decoding: unused.
804 */
805 int rate_emu;
806
807 /**
808 * if non NULL, 'draw_horiz_band' is called by the libavcodec
809 * decoder to draw an horizontal band. It improve cache usage. Not
810 * all codecs can do that. You must check the codec capabilities
811 * before
812 * - encoding: unused
813 * - decoding: set by user.
814 * @param height the height of the slice
815 * @param y the y position of the slice
816 * @param type 1->top field, 2->bottom field, 3->frame
817 * @param offset offset into the AVFrame.data from which the slice should be read
818 */
819 void (*draw_horiz_band)(struct AVCodecContext *s,
820 const AVFrame *src, int offset[4],
821 int y, int type, int height);
822
823 /* audio only */
824 int sample_rate; ///< samples per sec
825 int channels;
826
827 /**
828 * audio sample format.
829 * - encoding: set by user.
830 * - decoding: set by lavc.
831 */
832 enum SampleFormat sample_fmt; ///< sample format, currenly unused
833
834 /* the following data should not be initialized */
835 /**
836 * samples per packet. initialized when calling 'init'
837 */
838 int frame_size;
839 int frame_number; ///< audio or video frame number
840 int real_pict_num; ///< returns the real picture number of previous encoded frame
841
842 /**
843 * number of frames the decoded output will be delayed relative to
844 * the encoded input.
845 * - encoding: set by lavc.
846 * - decoding: unused
847 */
848 int delay;
849
850 /* - encoding parameters */
851 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
852 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
853
854 /**
855 * minimum quantizer.
856 * - encoding: set by user.
857 * - decoding: unused
858 */
859 int qmin;
860
861 /**
862 * maximum quantizer.
863 * - encoding: set by user.
864 * - decoding: unused
865 */
866 int qmax;
867
868 /**
869 * maximum quantizer difference between frames.
870 * - encoding: set by user.
871 * - decoding: unused
872 */
873 int max_qdiff;
874
875 /**
876 * maximum number of b frames between non b frames.
877 * note: the output will be delayed by max_b_frames+1 relative to the input
878 * - encoding: set by user.
879 * - decoding: unused
880 */
881 int max_b_frames;
882
883 /**
884 * qscale factor between ip and b frames.
885 * - encoding: set by user.
886 * - decoding: unused
887 */
888 float b_quant_factor;
889
890 /** obsolete FIXME remove */
891 int rc_strategy;
892 #define FF_RC_STRATEGY_XVID 1
893
894 int b_frame_strategy;
895
896 /**
897 * hurry up amount.
898 * deprecated in favor of skip_idct and skip_frame
899 * - encoding: unused
900 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
901 */
902 int hurry_up;
903
904 struct AVCodec *codec;
905
906 void *priv_data;
907
908 /* unused, FIXME remove*/
909 int rtp_mode;
910
911 int rtp_payload_size; /* The size of the RTP payload: the coder will */
912 /* do it's best to deliver a chunk with size */
913 /* below rtp_payload_size, the chunk will start */
914 /* with a start code on some codecs like H.263 */
915 /* This doesn't take account of any particular */
916 /* headers inside the transmited RTP payload */
917
918
919 /* The RTP callback: This function is called */
920 /* every time the encoder has a packet to send */
921 /* Depends on the encoder if the data starts */
922 /* with a Start Code (it should) H.263 does. */
923 /* mb_nb contains the number of macroblocks */
924 /* encoded in the RTP payload */
925 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
926
927 /* statistics, used for 2-pass encoding */
928 int mv_bits;
929 int header_bits;
930 int i_tex_bits;
931 int p_tex_bits;
932 int i_count;
933 int p_count;
934 int skip_count;
935 int misc_bits;
936
937 /**
938 * number of bits used for the previously encoded frame.
939 * - encoding: set by lavc
940 * - decoding: unused
941 */
942 int frame_bits;
943
944 /**
945 * private data of the user, can be used to carry app specific stuff.
946 * - encoding: set by user
947 * - decoding: set by user
948 */
949 void *opaque;
950
951 char codec_name[32];
952 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
953 enum CodecID codec_id; /* see CODEC_ID_xxx */
954
955 /**
956 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
957 * this is used to workaround some encoder bugs
958 * - encoding: set by user, if not then the default based on codec_id will be used
959 * - decoding: set by user, will be converted to upper case by lavc during init
960 */
961 unsigned int codec_tag;
962
963 /**
964 * workaround bugs in encoders which sometimes cannot be detected automatically.
965 * - encoding: set by user
966 * - decoding: set by user
967 */
968 int workaround_bugs;
969 #define FF_BUG_AUTODETECT 1 ///< autodetection
970 #define FF_BUG_OLD_MSMPEG4 2
971 #define FF_BUG_XVID_ILACE 4
972 #define FF_BUG_UMP4 8
973 #define FF_BUG_NO_PADDING 16
974 #define FF_BUG_AMV 32
975 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
976 #define FF_BUG_QPEL_CHROMA 64
977 #define FF_BUG_STD_QPEL 128
978 #define FF_BUG_QPEL_CHROMA2 256
979 #define FF_BUG_DIRECT_BLOCKSIZE 512
980 #define FF_BUG_EDGE 1024
981 #define FF_BUG_HPEL_CHROMA 2048
982 #define FF_BUG_DC_CLIP 4096
983 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
984 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
985
986 /**
987 * luma single coeff elimination threshold.
988 * - encoding: set by user
989 * - decoding: unused
990 */
991 int luma_elim_threshold;
992
993 /**
994 * chroma single coeff elimination threshold.
995 * - encoding: set by user
996 * - decoding: unused
997 */
998 int chroma_elim_threshold;
999
1000 /**
1001 * strictly follow the std (MPEG4, ...).
1002 * - encoding: set by user
1003 * - decoding: unused
1004 */
1005 int strict_std_compliance;
1006 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1007 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1008 #define FF_COMPLIANCE_NORMAL 0
1009 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1010 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1011
1012 /**
1013 * qscale offset between ip and b frames.
1014 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1015 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1016 * - encoding: set by user.
1017 * - decoding: unused
1018 */
1019 float b_quant_offset;
1020
1021 /**
1022 * error resilience higher values will detect more errors but may missdetect
1023 * some more or less valid parts as errors.
1024 * - encoding: unused
1025 * - decoding: set by user
1026 */
1027 int error_resilience;
1028 #define FF_ER_CAREFUL 1
1029 #define FF_ER_COMPLIANT 2
1030 #define FF_ER_AGGRESSIVE 3
1031 #define FF_ER_VERY_AGGRESSIVE 4
1032
1033 /**
1034 * called at the beginning of each frame to get a buffer for it.
1035 * if pic.reference is set then the frame will be read later by lavc
1036 * avcodec_align_dimensions() should be used to find the required width and
1037 * height, as they normally need to be rounded up to the next multiple of 16
1038 * - encoding: unused
1039 * - decoding: set by lavc, user can override
1040 */
1041 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1042
1043 /**
1044 * called to release buffers which where allocated with get_buffer.
1045 * a released buffer can be reused in get_buffer()
1046 * pic.data[*] must be set to NULL
1047 * - encoding: unused
1048 * - decoding: set by lavc, user can override
1049 */
1050 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1051
1052 /**
1053 * if 1 the stream has a 1 frame delay during decoding.
1054 * - encoding: set by lavc
1055 * - decoding: set by lavc
1056 */
1057 int has_b_frames;
1058
1059 /**
1060 * number of bytes per packet if constant and known or 0
1061 * used by some WAV based audio codecs
1062 */
1063 int block_align;
1064
1065 int parse_only; /* - decoding only: if true, only parsing is done
1066 (function avcodec_parse_frame()). The frame
1067 data is returned. Only MPEG codecs support this now. */
1068
1069 /**
1070 * 0-> h263 quant 1-> mpeg quant.
1071 * - encoding: set by user.
1072 * - decoding: unused
1073 */
1074 int mpeg_quant;
1075
1076 /**
1077 * pass1 encoding statistics output buffer.
1078 * - encoding: set by lavc
1079 * - decoding: unused
1080 */
1081 char *stats_out;
1082
1083 /**
1084 * pass2 encoding statistics input buffer.
1085 * concatenated stuff from stats_out of pass1 should be placed here
1086 * - encoding: allocated/set/freed by user
1087 * - decoding: unused
1088 */
1089 char *stats_in;
1090
1091 /**
1092 * ratecontrol qmin qmax limiting method.
1093 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1094 * - encoding: set by user.
1095 * - decoding: unused
1096 */
1097 float rc_qsquish;
1098
1099 float rc_qmod_amp;
1100 int rc_qmod_freq;
1101
1102 /**
1103 * ratecontrol override, see RcOverride.
1104 * - encoding: allocated/set/freed by user.
1105 * - decoding: unused
1106 */
1107 RcOverride *rc_override;
1108 int rc_override_count;
1109
1110 /**
1111 * rate control equation.
1112 * - encoding: set by user
1113 * - decoding: unused
1114 */
1115 char *rc_eq;
1116
1117 /**
1118 * maximum bitrate.
1119 * - encoding: set by user.
1120 * - decoding: unused
1121 */
1122 int rc_max_rate;
1123
1124 /**
1125 * minimum bitrate.
1126 * - encoding: set by user.
1127 * - decoding: unused
1128 */
1129 int rc_min_rate;
1130
1131 /**
1132 * decoder bitstream buffer size.
1133 * - encoding: set by user.
1134 * - decoding: unused
1135 */
1136 int rc_buffer_size;
1137 float rc_buffer_aggressivity;
1138
1139 /**
1140 * qscale factor between p and i frames.
1141 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1142 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1143 * - encoding: set by user.
1144 * - decoding: unused
1145 */
1146 float i_quant_factor;
1147
1148 /**
1149 * qscale offset between p and i frames.
1150 * - encoding: set by user.
1151 * - decoding: unused
1152 */
1153 float i_quant_offset;
1154
1155 /**
1156 * initial complexity for pass1 ratecontrol.
1157 * - encoding: set by user.
1158 * - decoding: unused
1159 */
1160 float rc_initial_cplx;
1161
1162 /**
1163 * dct algorithm, see FF_DCT_* below.
1164 * - encoding: set by user
1165 * - decoding: unused
1166 */
1167 int dct_algo;
1168 #define FF_DCT_AUTO 0
1169 #define FF_DCT_FASTINT 1
1170 #define FF_DCT_INT 2
1171 #define FF_DCT_MMX 3
1172 #define FF_DCT_MLIB 4
1173 #define FF_DCT_ALTIVEC 5
1174 #define FF_DCT_FAAN 6
1175
1176 /**
1177 * luminance masking (0-> disabled).
1178 * - encoding: set by user
1179 * - decoding: unused
1180 */
1181 float lumi_masking;
1182
1183 /**
1184 * temporary complexity masking (0-> disabled).
1185 * - encoding: set by user
1186 * - decoding: unused
1187 */
1188 float temporal_cplx_masking;
1189
1190 /**
1191 * spatial complexity masking (0-> disabled).
1192 * - encoding: set by user
1193 * - decoding: unused
1194 */
1195 float spatial_cplx_masking;
1196
1197 /**
1198 * p block masking (0-> disabled).
1199 * - encoding: set by user
1200 * - decoding: unused
1201 */
1202 float p_masking;
1203
1204 /**
1205 * darkness masking (0-> disabled).
1206 * - encoding: set by user
1207 * - decoding: unused
1208 */
1209 float dark_masking;
1210
1211
1212 /* for binary compatibility */
1213 int unused;
1214
1215 /**
1216 * idct algorithm, see FF_IDCT_* below.
1217 * - encoding: set by user
1218 * - decoding: set by user
1219 */
1220 int idct_algo;
1221 #define FF_IDCT_AUTO 0
1222 #define FF_IDCT_INT 1
1223 #define FF_IDCT_SIMPLE 2
1224 #define FF_IDCT_SIMPLEMMX 3
1225 #define FF_IDCT_LIBMPEG2MMX 4
1226 #define FF_IDCT_PS2 5
1227 #define FF_IDCT_MLIB 6
1228 #define FF_IDCT_ARM 7
1229 #define FF_IDCT_ALTIVEC 8
1230 #define FF_IDCT_SH4 9
1231 #define FF_IDCT_SIMPLEARM 10
1232 #define FF_IDCT_H264 11
1233 #define FF_IDCT_VP3 12
1234 #define FF_IDCT_IPP 13
1235 #define FF_IDCT_XVIDMMX 14
1236 #define FF_IDCT_CAVS 15
1237 #define FF_IDCT_SIMPLEARMV5TE 16
1238 #define FF_IDCT_SIMPLEARMV6 17
1239
1240 /**
1241 * slice count.
1242 * - encoding: set by lavc
1243 * - decoding: set by user (or 0)
1244 */
1245 int slice_count;
1246 /**
1247 * slice offsets in the frame in bytes.
1248 * - encoding: set/allocated by lavc
1249 * - decoding: set/allocated by user (or NULL)
1250 */
1251 int *slice_offset;
1252
1253 /**
1254 * error concealment flags.
1255 * - encoding: unused
1256 * - decoding: set by user
1257 */
1258 int error_concealment;
1259 #define FF_EC_GUESS_MVS 1
1260 #define FF_EC_DEBLOCK 2
1261
1262 /**
1263 * dsp_mask could be add used to disable unwanted CPU features
1264 * CPU features (i.e. MMX, SSE. ...)
1265 *
1266 * with FORCE flag you may instead enable given CPU features
1267 * (Dangerous: usable in case of misdetection, improper usage however will
1268 * result into program crash)
1269 */
1270 unsigned dsp_mask;
1271 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1272 /* lower 16 bits - CPU features */
1273 #ifdef HAVE_MMX
1274 #define FF_MM_MMX 0x0001 /* standard MMX */
1275 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1276 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1277 #define FF_MM_SSE 0x0008 /* SSE functions */
1278 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1279 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1280 #endif /* HAVE_MMX */
1281 #ifdef HAVE_IWMMXT
1282 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1283 #endif /* HAVE_IWMMXT */
1284
1285 /**
1286 * bits per sample/pixel from the demuxer (needed for huffyuv).
1287 * - encoding: set by lavc
1288 * - decoding: set by user
1289 */
1290 int bits_per_sample;
1291
1292 /**
1293 * prediction method (needed for huffyuv).
1294 * - encoding: set by user
1295 * - decoding: unused
1296 */
1297 int prediction_method;
1298 #define FF_PRED_LEFT 0
1299 #define FF_PRED_PLANE 1
1300 #define FF_PRED_MEDIAN 2
1301
1302 /**
1303 * sample aspect ratio (0 if unknown).
1304 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1305 * - encoding: set by user.
1306 * - decoding: set by lavc.
1307 */
1308 AVRational sample_aspect_ratio;
1309
1310 /**
1311 * the picture in the bitstream.
1312 * - encoding: set by lavc
1313 * - decoding: set by lavc
1314 */
1315 AVFrame *coded_frame;
1316
1317 /**
1318 * debug.
1319 * - encoding: set by user.
1320 * - decoding: set by user.
1321 */
1322 int debug;
1323 #define FF_DEBUG_PICT_INFO 1
1324 #define FF_DEBUG_RC 2
1325 #define FF_DEBUG_BITSTREAM 4
1326 #define FF_DEBUG_MB_TYPE 8
1327 #define FF_DEBUG_QP 16
1328 #define FF_DEBUG_MV 32
1329 #define FF_DEBUG_DCT_COEFF 0x00000040
1330 #define FF_DEBUG_SKIP 0x00000080
1331 #define FF_DEBUG_STARTCODE 0x00000100
1332 #define FF_DEBUG_PTS 0x00000200
1333 #define FF_DEBUG_ER 0x00000400
1334 #define FF_DEBUG_MMCO 0x00000800
1335 #define FF_DEBUG_BUGS 0x00001000
1336 #define FF_DEBUG_VIS_QP 0x00002000
1337 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1338
1339 /**
1340 * debug.
1341 * - encoding: set by user.
1342 * - decoding: set by user.
1343 */
1344 int debug_mv;
1345 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1346 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1347 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1348
1349 /**
1350 * error.
1351 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1352 * - decoding: unused
1353 */
1354 uint64_t error[4];
1355
1356 /**
1357 * minimum MB quantizer.
1358 * - encoding: unused
1359 * - decoding: unused
1360 */
1361 int mb_qmin;
1362
1363 /**
1364 * maximum MB quantizer.
1365 * - encoding: unused
1366 * - decoding: unused
1367 */
1368 int mb_qmax;
1369
1370 /**
1371 * motion estimation compare function.
1372 * - encoding: set by user.
1373 * - decoding: unused
1374 */
1375 int me_cmp;
1376 /**
1377 * subpixel motion estimation compare function.
1378 * - encoding: set by user.
1379 * - decoding: unused
1380 */
1381 int me_sub_cmp;
1382 /**
1383 * macroblock compare function (not supported yet).
1384 * - encoding: set by user.
1385 * - decoding: unused
1386 */
1387 int mb_cmp;
1388 /**
1389 * interlaced dct compare function
1390 * - encoding: set by user.
1391 * - decoding: unused
1392 */
1393 int ildct_cmp;
1394 #define FF_CMP_SAD 0
1395 #define FF_CMP_SSE 1
1396 #define FF_CMP_SATD 2
1397 #define FF_CMP_DCT 3
1398 #define FF_CMP_PSNR 4
1399 #define FF_CMP_BIT 5
1400 #define FF_CMP_RD 6
1401 #define FF_CMP_ZERO 7
1402 #define FF_CMP_VSAD 8
1403 #define FF_CMP_VSSE 9
1404 #define FF_CMP_NSSE 10
1405 #define FF_CMP_W53 11
1406 #define FF_CMP_W97 12
1407 #define FF_CMP_DCTMAX 13
1408 #define FF_CMP_DCT264 14
1409 #define FF_CMP_CHROMA 256
1410
1411 /**
1412 * ME diamond size & shape.
1413 * - encoding: set by user.
1414 * - decoding: unused
1415 */
1416 int dia_size;
1417
1418 /**
1419 * amount of previous MV predictors (2a+1 x 2a+1 square).
1420 * - encoding: set by user.
1421 * - decoding: unused
1422 */
1423 int last_predictor_count;
1424
1425 /**
1426 * pre pass for motion estimation.
1427 * - encoding: set by user.
1428 * - decoding: unused
1429 */
1430 int pre_me;
1431
1432 /**
1433 * motion estimation pre pass compare function.
1434 * - encoding: set by user.
1435 * - decoding: unused
1436 */
1437 int me_pre_cmp;
1438
1439 /**
1440 * ME pre pass diamond size & shape.
1441 * - encoding: set by user.
1442 * - decoding: unused
1443 */
1444 int pre_dia_size;
1445
1446 /**
1447 * subpel ME quality.
1448 * - encoding: set by user.
1449 * - decoding: unused
1450 */
1451 int me_subpel_quality;
1452
1453 /**
1454 * callback to negotiate the pixelFormat.
1455 * @param fmt is the list of formats which are supported by the codec,
1456 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1457 * the first is allways the native one
1458 * @return the choosen format
1459 * - encoding: unused
1460 * - decoding: set by user, if not set then the native format will always be choosen
1461 */
1462 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1463
1464 /**
1465 * DTG active format information (additionnal aspect ratio
1466 * information only used in DVB MPEG2 transport streams). 0 if
1467 * not set.
1468 *
1469 * - encoding: unused.
1470 * - decoding: set by decoder
1471 */
1472 int dtg_active_format;
1473 #define FF_DTG_AFD_SAME 8
1474 #define FF_DTG_AFD_4_3 9
1475 #define FF_DTG_AFD_16_9 10
1476 #define FF_DTG_AFD_14_9 11
1477 #define FF_DTG_AFD_4_3_SP_14_9 13
1478 #define FF_DTG_AFD_16_9_SP_14_9 14
1479 #define FF_DTG_AFD_SP_4_3 15
1480
1481 /**
1482 * Maximum motion estimation search range in subpel units.
1483 * if 0 then no limit
1484 *
1485 * - encoding: set by user.
1486 * - decoding: unused.
1487 */
1488 int me_range;
1489
1490 /**
1491 * intra quantizer bias.
1492 * - encoding: set by user.
1493 * - decoding: unused
1494 */
1495 int intra_quant_bias;
1496 #define FF_DEFAULT_QUANT_BIAS 999999
1497
1498 /**
1499 * inter quantizer bias.
1500 * - encoding: set by user.
1501 * - decoding: unused
1502 */
1503 int inter_quant_bias;
1504
1505 /**
1506 * color table ID.
1507 * - encoding: unused.
1508 * - decoding: which clrtable should be used for 8bit RGB images
1509 * table have to be stored somewhere FIXME
1510 */
1511 int color_table_id;
1512
1513 /**
1514 * internal_buffer count.
1515 * Don't touch, used by lavc default_get_buffer()
1516 */
1517 int internal_buffer_count;
1518
1519 /**
1520 * internal_buffers.
1521 * Don't touch, used by lavc default_get_buffer()
1522 */
1523 void *internal_buffer;
1524
1525 #define FF_LAMBDA_SHIFT 7
1526 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1527 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1528 #define FF_LAMBDA_MAX (256*128-1)
1529
1530 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1531 /**
1532 * global quality for codecs which cannot change it per frame.
1533 * this should be proportional to MPEG1/2/4 qscale.
1534 * - encoding: set by user.
1535 * - decoding: unused
1536 */
1537 int global_quality;
1538
1539 #define FF_CODER_TYPE_VLC 0
1540 #define FF_CODER_TYPE_AC 1
1541 /**
1542 * coder type
1543 * - encoding: set by user.
1544 * - decoding: unused
1545 */
1546 int coder_type;
1547
1548 /**
1549 * context model
1550 * - encoding: set by user.
1551 * - decoding: unused
1552 */
1553 int context_model;
1554 #if 0
1555 /**
1556 *
1557 * - encoding: unused
1558 * - decoding: set by user.
1559 */
1560 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1561 #endif
1562
1563 /**
1564 * slice flags
1565 * - encoding: unused
1566 * - decoding: set by user.
1567 */
1568 int slice_flags;
1569 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1570 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1571 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1572
1573 /**
1574 * XVideo Motion Acceleration
1575 * - encoding: forbidden
1576 * - decoding: set by decoder
1577 */
1578 int xvmc_acceleration;
1579
1580 /**
1581 * macroblock decision mode
1582 * - encoding: set by user.
1583 * - decoding: unused
1584 */
1585 int mb_decision;
1586 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1587 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1588 #define FF_MB_DECISION_RD 2 ///< rate distoration
1589
1590 /**
1591 * custom intra quantization matrix
1592 * - encoding: set by user, can be NULL
1593 * - decoding: set by lavc
1594 */
1595 uint16_t *intra_matrix;
1596
1597 /**
1598 * custom inter quantization matrix
1599 * - encoding: set by user, can be NULL
1600 * - decoding: set by lavc
1601 */
1602 uint16_t *inter_matrix;
1603
1604 /**
1605 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1606 * this is used to workaround some encoder bugs
1607 * - encoding: unused
1608 * - decoding: set by user, will be converted to upper case by lavc during init
1609 */
1610 unsigned int stream_codec_tag;
1611
1612 /**
1613 * scene change detection threshold.
1614 * 0 is default, larger means fewer detected scene changes
1615 * - encoding: set by user.
1616 * - decoding: unused
1617 */
1618 int scenechange_threshold;
1619
1620 /**
1621 * minimum lagrange multipler
1622 * - encoding: set by user.
1623 * - decoding: unused
1624 */
1625 int lmin;
1626
1627 /**
1628 * maximum lagrange multipler
1629 * - encoding: set by user.
1630 * - decoding: unused
1631 */
1632 int lmax;
1633
1634 /**
1635 * Palette control structure
1636 * - encoding: ??? (no palette-enabled encoder yet)
1637 * - decoding: set by user.
1638 */
1639 struct AVPaletteControl *palctrl;
1640
1641 /**
1642 * noise reduction strength
1643 * - encoding: set by user.
1644 * - decoding: unused
1645 */
1646 int noise_reduction;
1647
1648 /**
1649 * called at the beginning of a frame to get cr buffer for it.
1650 * buffer type (size, hints) must be the same. lavc won't check it.
1651 * lavc will pass previous buffer in pic, function should return
1652 * same buffer or new buffer with old frame "painted" into it.
1653 * if pic.data[0] == NULL must behave like get_buffer().
1654 * - encoding: unused
1655 * - decoding: set by lavc, user can override
1656 */
1657 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1658
1659 /**
1660 * number of bits which should be loaded into the rc buffer before decoding starts
1661 * - encoding: set by user.
1662 * - decoding: unused
1663 */
1664 int rc_initial_buffer_occupancy;
1665
1666 /**
1667 *
1668 * - encoding: set by user.
1669 * - decoding: unused
1670 */
1671 int inter_threshold;
1672
1673 /**
1674 * CODEC_FLAG2_*.
1675 * - encoding: set by user.
1676 * - decoding: set by user.
1677 */
1678 int flags2;
1679
1680 /**
1681 * simulates errors in the bitstream to test error concealment.
1682 * - encoding: set by user.
1683 * - decoding: unused.
1684 */
1685 int error_rate;
1686
1687 /**
1688 * MP3 antialias algorithm, see FF_AA_* below.
1689 * - encoding: unused
1690 * - decoding: set by user
1691 */
1692 int antialias_algo;
1693 #define FF_AA_AUTO 0
1694 #define FF_AA_FASTINT 1 //not implemented yet
1695 #define FF_AA_INT 2
1696 #define FF_AA_FLOAT 3
1697 /**
1698 * Quantizer noise shaping.
1699 * - encoding: set by user
1700 * - decoding: unused
1701 */
1702 int quantizer_noise_shaping;
1703
1704 /**
1705 * Thread count.
1706 * is used to decide how many independant tasks should be passed to execute()
1707 * - encoding: set by user
1708 * - decoding: set by user
1709 */
1710 int thread_count;
1711
1712 /**
1713 * the codec may call this to execute several independant things. it will return only after
1714 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1715 * default implementation will execute the parts serially
1716 * @param count the number of things to execute
1717 * - encoding: set by lavc, user can override
1718 * - decoding: set by lavc, user can override
1719 */
1720 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1721
1722 /**
1723 * Thread opaque.
1724 * can be used by execute() to store some per AVCodecContext stuff.
1725 * - encoding: set by execute()
1726 * - decoding: set by execute()
1727 */
1728 void *thread_opaque;
1729
1730 /**
1731 * Motion estimation threshold. under which no motion estimation is
1732 * performed, but instead the user specified motion vectors are used
1733 *
1734 * - encoding: set by user
1735 * - decoding: unused
1736 */
1737 int me_threshold;
1738
1739 /**
1740 * Macroblock threshold. under which the user specified macroblock types will be used
1741 * - encoding: set by user
1742 * - decoding: unused
1743 */
1744 int mb_threshold;
1745
1746 /**
1747 * precision of the intra dc coefficient - 8.
1748 * - encoding: set by user
1749 * - decoding: unused
1750 */
1751 int intra_dc_precision;
1752
1753 /**
1754 * noise vs. sse weight for the nsse comparsion function.
1755 * - encoding: set by user
1756 * - decoding: unused
1757 */
1758 int nsse_weight;
1759
1760 /**
1761 * number of macroblock rows at the top which are skipped.
1762 * - encoding: unused
1763 * - decoding: set by user
1764 */
1765 int skip_top;
1766
1767 /**
1768 * number of macroblock rows at the bottom which are skipped.
1769 * - encoding: unused
1770 * - decoding: set by user
1771 */
1772 int skip_bottom;
1773
1774 /**
1775 * profile
1776 * - encoding: set by user
1777 * - decoding: set by lavc
1778 */
1779 int profile;
1780 #define FF_PROFILE_UNKNOWN -99
1781
1782 /**
1783 * level
1784 * - encoding: set by user
1785 * - decoding: set by lavc
1786 */
1787 int level;
1788 #define FF_LEVEL_UNKNOWN -99
1789
1790 /**
1791 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1792 * - encoding: unused
1793 * - decoding: set by user
1794 */
1795 int lowres;
1796
1797 /**
1798 * bitsream width / height. may be different from width/height if lowres
1799 * or other things are used
1800 * - encoding: unused
1801 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1802 */
1803 int coded_width, coded_height;
1804
1805 /**
1806 * frame skip threshold
1807 * - encoding: set by user
1808 * - decoding: unused
1809 */
1810 int frame_skip_threshold;
1811
1812 /**
1813 * frame skip factor
1814 * - encoding: set by user
1815 * - decoding: unused
1816 */
1817 int frame_skip_factor;
1818
1819 /**
1820 * frame skip exponent
1821 * - encoding: set by user
1822 * - decoding: unused
1823 */
1824 int frame_skip_exp;
1825
1826 /**
1827 * frame skip comparission function
1828 * - encoding: set by user.
1829 * - decoding: unused
1830 */
1831 int frame_skip_cmp;
1832
1833 /**
1834 * border processing masking. raises the quantizer for mbs on the borders
1835 * of the picture.
1836 * - encoding: set by user
1837 * - decoding: unused
1838 */
1839 float border_masking;
1840
1841 /**
1842 * minimum MB lagrange multipler.
1843 * - encoding: set by user.
1844 * - decoding: unused
1845 */
1846 int mb_lmin;
1847
1848 /**
1849 * maximum MB lagrange multipler.
1850 * - encoding: set by user.
1851 * - decoding: unused
1852 */
1853 int mb_lmax;
1854
1855 /**
1856 *
1857 * - encoding: set by user.
1858 * - decoding: unused
1859 */
1860 int me_penalty_compensation;
1861
1862 /**
1863 *
1864 * - encoding: unused
1865 * - decoding: set by user.
1866 */
1867 enum AVDiscard skip_loop_filter;
1868
1869 /**
1870 *
1871 * - encoding: unused
1872 * - decoding: set by user.
1873 */
1874 enum AVDiscard skip_idct;
1875
1876 /**
1877 *
1878 * - encoding: unused
1879 * - decoding: set by user.
1880 */
1881 enum AVDiscard skip_frame;
1882
1883 /**
1884 *
1885 * - encoding: set by user.
1886 * - decoding: unused
1887 */
1888 int bidir_refine;
1889
1890 /**
1891 *
1892 * - encoding: set by user.
1893 * - decoding: unused
1894 */
1895 int brd_scale;
1896
1897 /**
1898 * constant rate factor - quality-based VBR - values ~correspond to qps
1899 * - encoding: set by user.
1900 * - decoding: unused
1901 */
1902 float crf;
1903
1904 /**
1905 * constant quantization parameter rate control method
1906 * - encoding: set by user.
1907 * - decoding: unused
1908 */
1909 int cqp;
1910
1911 /**
1912 * minimum gop size
1913 * - encoding: set by user.
1914 * - decoding: unused
1915 */
1916 int keyint_min;
1917
1918 /**
1919 * number of reference frames
1920 * - encoding: set by user.
1921 * - decoding: unused
1922 */
1923 int refs;
1924
1925 /**
1926 * chroma qp offset from luma
1927 * - encoding: set by user.
1928 * - decoding: unused
1929 */
1930 int chromaoffset;
1931
1932 /**
1933 * influences how often b-frames are used
1934 * - encoding: set by user.
1935 * - decoding: unused
1936 */
1937 int bframebias;
1938
1939 /**
1940 * trellis RD quantization
1941 * - encoding: set by user.
1942 * - decoding: unused
1943 */
1944 int trellis;
1945
1946 /**
1947 * reduce fluctuations in qp (before curve compression)
1948 * - encoding: set by user.
1949 * - decoding: unused
1950 */
1951 float complexityblur;
1952
1953 /**
1954 * in-loop deblocking filter alphac0 parameter
1955 * alpha is in the range -6...6
1956 * - encoding: set by user.
1957 * - decoding: unused
1958 */
1959 int deblockalpha;
1960
1961 /**
1962 * in-loop deblocking filter beta parameter
1963 * beta is in the range -6...6
1964 * - encoding: set by user.
1965 * - decoding: unused
1966 */
1967 int deblockbeta;
1968
1969 /**
1970 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1971 * - encoding: set by user.
1972 * - decoding: unused
1973 */
1974 int partitions;
1975 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1976 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1977 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1978 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1979 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1980
1981 /**
1982 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1983 * - encoding: set by user.
1984 * - decoding: unused
1985 */
1986 int directpred;
1987
1988 /**
1989 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1990 * - encoding: set by user.
1991 * - decoding: unused
1992 */
1993 int cutoff;
1994
1995 /**
1996 * multiplied by qscale for each frame and added to scene_change_score
1997 * - encoding: set by user.
1998 * - decoding: unused
1999 */
2000 int scenechange_factor;
2001
2002 /**
2003 *
2004 * note: value depends upon the compare functin used for fullpel ME
2005 * - encoding: set by user.
2006 * - decoding: unused
2007 */
2008 int mv0_threshold;
2009
2010 /**
2011 * adjusts sensitivity of b_frame_strategy 1
2012 * - encoding: set by user.
2013 * - decoding: unused
2014 */
2015 int b_sensitivity;
2016
2017 /**
2018 * - encoding: set by user.
2019 * - decoding: unused
2020 */
2021 int compression_level;
2022 #define FF_COMPRESSION_DEFAULT -1
2023
2024 /**
2025 * sets whether to use LPC mode - used by FLAC encoder
2026 * - encoding: set by user.
2027 * - decoding: unused.
2028 */
2029 int use_lpc;
2030
2031 /**
2032 * LPC coefficient precision - used by FLAC encoder
2033 * - encoding: set by user.
2034 * - decoding: unused.
2035 */
2036 int lpc_coeff_precision;
2037
2038 /**
2039 * - encoding: set by user.
2040 * - decoding: unused.
2041 */
2042 int min_prediction_order;
2043
2044 /**
2045 * - encoding: set by user.
2046 * - decoding: unused.
2047 */
2048 int max_prediction_order;
2049
2050 /**
2051 * search method for selecting prediction order
2052 * - encoding: set by user.
2053 * - decoding: unused.
2054 */
2055 int prediction_order_method;
2056
2057 /**
2058 * - encoding: set by user.
2059 * - decoding: unused.
2060 */
2061 int min_partition_order;
2062
2063 /**
2064 * - encoding: set by user.
2065 * - decoding: unused.
2066 */
2067 int max_partition_order;
2068
2069 /**
2070 * GOP timecode frame start number, in non drop frame format
2071 * - encoding: set by user.
2072 * - decoding: unused.
2073 */
2074 int64_t timecode_frame_start;
2075 } AVCodecContext;
2076
2077 /**
2078 * AVCodec.
2079 */
2080 typedef struct AVCodec {
2081 const char *name;
2082 enum CodecType type;
2083 enum CodecID id;
2084 int priv_data_size;
2085 int (*init)(AVCodecContext *);
2086 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2087 int (*close)(AVCodecContext *);
2088 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2089 uint8_t *buf, int buf_size);
2090 int capabilities;
2091 struct AVCodec *next;
2092 void (*flush)(AVCodecContext *);
2093 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2094 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2095 } AVCodec;
2096
2097 /**
2098 * four components are given, that's all.
2099 * the last component is alpha
2100 */
2101 typedef struct AVPicture {
2102 uint8_t *data[4];
2103 int linesize[4]; ///< number of bytes per line
2104 } AVPicture;
2105
2106 /**
2107 * AVPaletteControl
2108 * This structure defines a method for communicating palette changes
2109 * between and demuxer and a decoder.
2110 * this is totally broken, palette changes should be sent as AVPackets
2111 */
2112 #define AVPALETTE_SIZE 1024
2113 #define AVPALETTE_COUNT 256
2114 typedef struct AVPaletteControl {
2115
2116 /* demuxer sets this to 1 to indicate the palette has changed;
2117 * decoder resets to 0 */
2118 int palette_changed;
2119
2120 /* 4-byte ARGB palette entries, stored in native byte order; note that
2121 * the individual palette components should be on a 8-bit scale; if
2122 * the palette data comes from a IBM VGA native format, the component
2123 * data is probably 6 bits in size and needs to be scaled */
2124 unsigned int palette[AVPALETTE_COUNT];
2125
2126 } AVPaletteControl attribute_deprecated;
2127
2128 typedef struct AVSubtitleRect {
2129 uint16_t x;
2130 uint16_t y;
2131 uint16_t w;
2132 uint16_t h;
2133 uint16_t nb_colors;
2134 int linesize;
2135 uint32_t *rgba_palette;
2136 uint8_t *bitmap;
2137 } AVSubtitleRect;
2138
2139 typedef struct AVSubtitle {
2140 uint16_t format; /* 0 = graphics */
2141 uint32_t start_display_time; /* relative to packet pts, in ms */
2142 uint32_t end_display_time; /* relative to packet pts, in ms */
2143 uint32_t num_rects;
2144 AVSubtitleRect *rects;
2145 } AVSubtitle;
2146
2147 extern AVCodec ac3_encoder;
2148 extern AVCodec amr_nb_encoder;
2149 extern AVCodec amr_wb_encoder;
2150 extern AVCodec asv1_encoder;
2151 extern AVCodec asv2_encoder;
2152 extern AVCodec bmp_encoder;
2153 extern AVCodec dvvideo_encoder;
2154 extern AVCodec faac_encoder;
2155 extern AVCodec ffv1_encoder;
2156 extern AVCodec ffvhuff_encoder;
2157 extern AVCodec flac_encoder;
2158 extern AVCodec flashsv_encoder;
2159 extern AVCodec flv_encoder;
2160 extern AVCodec gif_encoder;
2161 extern AVCodec h261_encoder;
2162 extern AVCodec h263_encoder;
2163 extern AVCodec h263p_encoder;
2164 extern AVCodec h264_encoder;
2165 extern AVCodec huffyuv_encoder;
2166 extern AVCodec jpegls_encoder;
2167 extern AVCodec libgsm_encoder;
2168 extern AVCodec libtheora_encoder;
2169 extern AVCodec ljpeg_encoder;
2170 extern AVCodec mdec_encoder;
2171 extern AVCodec mjpeg_encoder;
2172 extern AVCodec mp2_encoder;
2173 extern AVCodec mp3lame_encoder;
2174 extern AVCodec mpeg1video_encoder;
2175 extern AVCodec mpeg2video_encoder;
2176 extern AVCodec mpeg4_encoder;
2177 extern AVCodec msmpeg4v1_encoder;
2178 extern AVCodec msmpeg4v2_encoder;
2179 extern AVCodec msmpeg4v3_encoder;
2180 extern AVCodec oggvorbis_encoder;
2181 extern AVCodec pam_encoder;
2182 extern AVCodec pbm_encoder;
2183 extern AVCodec pgm_encoder;
2184 extern AVCodec pgmyuv_encoder;
2185 extern AVCodec png_encoder;
2186 extern AVCodec ppm_encoder;
2187 extern AVCodec rv10_encoder;
2188 extern AVCodec rv20_encoder;
2189 extern AVCodec snow_encoder;
2190 extern AVCodec sonic_encoder;
2191 extern AVCodec sonic_ls_encoder;
2192 extern AVCodec svq1_encoder;
2193 extern AVCodec vcr1_encoder;
2194 extern AVCodec vorbis_encoder;
2195 extern AVCodec wmav1_encoder;
2196 extern AVCodec wmav2_encoder;
2197 extern AVCodec wmv1_encoder;
2198 extern AVCodec wmv2_encoder;
2199 extern AVCodec x264_encoder;
2200 extern AVCodec xvid_encoder;
2201 extern AVCodec zlib_encoder;
2202 extern AVCodec zmbv_encoder;
2203
2204 extern AVCodec aac_decoder;
2205 extern AVCodec aasc_decoder;
2206 extern AVCodec alac_decoder;
2207 extern AVCodec amr_nb_decoder;
2208 extern AVCodec amr_wb_decoder;
2209 extern AVCodec asv1_decoder;
2210 extern AVCodec asv2_decoder;
2211 extern AVCodec avs_decoder;
2212 extern AVCodec bmp_decoder;
2213 extern AVCodec cavs_decoder;
2214 extern AVCodec cinepak_decoder;
2215 extern AVCodec cljr_decoder;
2216 extern AVCodec cook_decoder;
2217 extern AVCodec cscd_decoder;
2218 extern AVCodec cyuv_decoder;
2219 extern AVCodec dsicinaudio_decoder;
2220 extern AVCodec dsicinvideo_decoder;
2221 extern AVCodec dvvideo_decoder;
2222 extern AVCodec eightbps_decoder;
2223 extern AVCodec ffv1_decoder;
2224 extern AVCodec ffvhuff_decoder;
2225 extern AVCodec flac_decoder;
2226 extern AVCodec flashsv_decoder;
2227 extern AVCodec flic_decoder;
2228 extern AVCodec flv_decoder;
2229 extern AVCodec fourxm_decoder;
2230 extern AVCodec fraps_decoder;
2231 extern AVCodec gif_decoder;
2232 extern AVCodec h261_decoder;
2233 extern AVCodec h263_decoder;
2234 extern AVCodec h263i_decoder;
2235 extern AVCodec h264_decoder;
2236 extern AVCodec huffyuv_decoder;
2237 extern AVCodec idcin_decoder;
2238 extern AVCodec imc_decoder;
2239 extern AVCodec indeo2_decoder;
2240 extern AVCodec indeo3_decoder;
2241 extern AVCodec interplay_dpcm_decoder;
2242 extern AVCodec interplay_video_decoder;
2243 extern AVCodec kmvc_decoder;
2244 extern AVCodec libgsm_decoder;
2245 extern AVCodec loco_decoder;
2246 extern AVCodec mace3_decoder;
2247 extern AVCodec mace6_decoder;
2248 extern AVCodec mdec_decoder;
2249 extern AVCodec mjpeg_decoder;
2250 extern AVCodec mjpegb_decoder;
2251 extern AVCodec mmvideo_decoder;
2252 extern AVCodec mp2_decoder;
2253 extern AVCodec mp3_decoder;
2254 extern AVCodec mp3adu_decoder;
2255 extern AVCodec mp3on4_decoder;
2256 extern AVCodec mpc7_decoder;
2257 extern AVCodec mpeg1video_decoder;
2258 extern AVCodec mpeg2video_decoder;
2259 extern AVCodec mpeg4_decoder;
2260 extern AVCodec mpeg4aac_decoder;
2261 extern AVCodec mpeg_xvmc_decoder;
2262 extern AVCodec mpegvideo_decoder;
2263 extern AVCodec msmpeg4v1_decoder;
2264 extern AVCodec msmpeg4v2_decoder;
2265 extern AVCodec msmpeg4v3_decoder;
2266 extern AVCodec msrle_decoder;
2267 extern AVCodec msvideo1_decoder;
2268 extern AVCodec mszh_decoder;
2269 extern AVCodec nuv_decoder;
2270 extern AVCodec oggvorbis_decoder;
2271 extern AVCodec png_decoder;
2272 extern AVCodec qdm2_decoder;
2273 extern AVCodec qdraw_decoder;
2274 extern AVCodec qpeg_decoder;
2275 extern AVCodec qtrle_decoder;
2276 extern AVCodec ra_144_decoder;
2277 extern AVCodec ra_288_decoder;
2278 extern AVCodec roq_decoder;
2279 extern AVCodec roq_dpcm_decoder;
2280 extern AVCodec rpza_decoder;
2281 extern AVCodec rv10_decoder;
2282 extern AVCodec rv20_decoder;
2283 extern AVCodec rv30_decoder;
2284 extern AVCodec rv40_decoder;
2285 extern AVCodec shorten_decoder;
2286 extern AVCodec smackaud_decoder;
2287 extern AVCodec smacker_decoder;
2288 extern AVCodec smc_decoder;
2289 extern AVCodec snow_decoder;
2290 extern AVCodec sol_dpcm_decoder;
2291 extern AVCodec sonic_decoder;
2292 extern AVCodec sp5x_decoder;
2293 extern AVCodec svq1_decoder;
2294 extern AVCodec svq3_decoder;
2295 extern AVCodec targa_decoder;
2296 extern AVCodec theora_decoder;
2297 extern AVCodec tiertexseqvideo_decoder;
2298 extern AVCodec tiff_decoder;
2299 extern AVCodec truemotion1_decoder;
2300 extern AVCodec truemotion2_decoder;
2301 extern AVCodec truespeech_decoder;
2302 extern AVCodec tscc_decoder;
2303 extern AVCodec tta_decoder;
2304 extern AVCodec ulti_decoder;
2305 extern AVCodec vc1_decoder;
2306 extern AVCodec vcr1_decoder;
2307 extern AVCodec vmdaudio_decoder;
2308 extern AVCodec vmdvideo_decoder;
2309 extern AVCodec vmnc_decoder;
2310 extern AVCodec vorbis_decoder;
2311 extern AVCodec vp3_decoder;
2312 extern AVCodec vp5_decoder;
2313 extern AVCodec vp6_decoder;
2314 extern AVCodec vp6f_decoder;
2315 extern AVCodec vqa_decoder;
2316 extern AVCodec wavpack_decoder;
2317 extern AVCodec wmav1_decoder;
2318 extern AVCodec wmav2_decoder;
2319 extern AVCodec wmv1_decoder;
2320 extern AVCodec wmv2_decoder;
2321 extern AVCodec wmv3_decoder;
2322 extern AVCodec wnv1_decoder;
2323 extern AVCodec ws_snd1_decoder;
2324 extern AVCodec xan_dpcm_decoder;
2325 extern AVCodec xan_wc3_decoder;
2326 extern AVCodec xl_decoder;
2327 extern AVCodec zlib_decoder;
2328 extern AVCodec zmbv_decoder;
2329
2330 /* pcm codecs */
2331 #define PCM_CODEC(id, name) \
2332 extern AVCodec name ## _decoder; \
2333 extern AVCodec name ## _encoder
2334
2335 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2336 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2337 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2338 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2339 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2340 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2341 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2342 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2343 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2344 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2345 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2346 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2347 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2348 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2349 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2350 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2351 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2352
2353 /* adpcm codecs */
2354
2355 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2356 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2357 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2358 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2359 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2360 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2361 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2362 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2363 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2364 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2365 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2366 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2367 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2368 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2369 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2370 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2371 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2372 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2373
2374 #undef PCM_CODEC
2375
2376 /* dummy raw video codec */
2377 extern AVCodec rawvideo_decoder;
2378 extern AVCodec rawvideo_encoder;
2379
2380 /* the following codecs use external GPL libs */
2381 extern AVCodec dts_decoder;
2382 extern AVCodec liba52_decoder;
2383
2384 /* subtitles */
2385 extern AVCodec dvbsub_decoder;
2386 extern AVCodec dvbsub_encoder;
2387 extern AVCodec dvdsub_decoder;
2388 extern AVCodec dvdsub_encoder;
2389
2390 /* resample.c */
2391
2392 struct ReSampleContext;
2393 struct AVResampleContext;
2394
2395 typedef struct ReSampleContext ReSampleContext;
2396
2397 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2398 int output_rate, int input_rate);
2399 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2400 void audio_resample_close(ReSampleContext *s);
2401
2402 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2403 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2404 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2405 void av_resample_close(struct AVResampleContext *c);
2406
2407 /* YUV420 format is assumed ! */
2408
2409 struct ImgReSampleContext;
2410
2411 typedef struct ImgReSampleContext ImgReSampleContext;
2412
2413 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2414 int input_width, int input_height);
2415
2416 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2417 int iwidth, int iheight,
2418 int topBand, int bottomBand,
2419 int leftBand, int rightBand,
2420 int padtop, int padbottom,
2421 int padleft, int padright);
2422
2423
2424 void img_resample(ImgReSampleContext *s,
2425 AVPicture *output, const AVPicture *input);
2426
2427 void img_resample_close(ImgReSampleContext *s);
2428
2429 /**
2430 * Allocate memory for a picture. Call avpicture_free to free it.
2431 *
2432 * @param picture the picture to be filled in.
2433 * @param pix_fmt the format of the picture.
2434 * @param width the width of the picture.
2435 * @param height the height of the picture.
2436 * @return 0 if successful, -1 if not.
2437 */
2438 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2439
2440 /* Free a picture previously allocated by avpicture_alloc. */
2441 void avpicture_free(AVPicture *picture);
2442
2443 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2444 int pix_fmt, int width, int height);
2445 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2446 unsigned char *dest, int dest_size);
2447 int avpicture_get_size(int pix_fmt, int width, int height);
2448 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2449 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2450 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2451 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2452 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2453
2454 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2455 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2456 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2457 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2458 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2459 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2460
2461 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2462 int has_alpha);
2463 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2464 int has_alpha, int *loss_ptr);
2465
2466 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2467 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2468 int img_get_alpha_info(const AVPicture *src,
2469 int pix_fmt, int width, int height);
2470
2471 /* convert among pixel formats */
2472 int img_convert(AVPicture *dst, int dst_pix_fmt,
2473 const AVPicture *src, int pix_fmt,
2474 int width, int height);
2475
2476 /* deinterlace a picture */
2477 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2478 int pix_fmt, int width, int height);
2479
2480 /* external high level API */
2481
2482 extern AVCodec *first_avcodec;
2483
2484 /* returns LIBAVCODEC_VERSION_INT constant */
2485 unsigned avcodec_version(void);
2486 /* returns LIBAVCODEC_BUILD constant */
2487 unsigned avcodec_build(void);
2488 void avcodec_init(void);
2489
2490 void register_avcodec(AVCodec *format);
2491 AVCodec *avcodec_find_encoder(enum CodecID id);
2492 AVCodec *avcodec_find_encoder_by_name(const char *name);
2493 AVCodec *avcodec_find_decoder(enum CodecID id);
2494 AVCodec *avcodec_find_decoder_by_name(const char *name);
2495 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2496
2497 void avcodec_get_context_defaults(AVCodecContext *s);
2498 AVCodecContext *avcodec_alloc_context(void);
2499 void avcodec_get_frame_defaults(AVFrame *pic);
2500 AVFrame *avcodec_alloc_frame(void);
2501
2502 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2503 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2504 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2505 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2506 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2507 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2508
2509 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2510 void avcodec_thread_free(AVCodecContext *s);
2511 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2512 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2513 //FIXME func typedef
2514
2515 /**
2516 * opens / inits the AVCodecContext.
2517 * not thread save!
2518 */
2519 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2520
2521
2522 attribute_deprecated int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2523 int *frame_size_ptr,
2524 uint8_t *buf, int buf_size);
2525 /**
2526 * Decode an audio frame.
2527 *
2528 * @param avctx the codec context.
2529 * @param samples output buffer, 16 byte aligned
2530 * @param frame_size_ptr the output buffer size in bytes (you MUST set this to the allocated size before calling avcodec_decode_audio2()), zero if no frame could be compressed
2531 * @param buf input buffer, 16 byte aligned
2532 * @param buf_size the input buffer size
2533 * @return 0 if successful, -1 if not.
2534 */
2535 int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
2536 int *frame_size_ptr,
2537 uint8_t *buf, int buf_size);
2538 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2539 int *got_picture_ptr,
2540 uint8_t *buf, int buf_size);
2541 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2542 int *got_sub_ptr,
2543 const uint8_t *buf, int buf_size);
2544 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2545 int *data_size_ptr,
2546 uint8_t *buf, int buf_size);
2547 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2548 const short *samples);
2549 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2550 const AVFrame *pict);
2551 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2552 const AVSubtitle *sub);
2553
2554 int avcodec_close(AVCodecContext *avctx);
2555
2556 void avcodec_register_all(void);
2557
2558 void avcodec_flush_buffers(AVCodecContext *avctx);
2559
2560 void avcodec_default_free_buffers(AVCodecContext *s);
2561
2562 /* misc usefull functions */
2563
2564 /**
2565 * returns a single letter to describe the picture type
2566 */
2567 char av_get_pict_type_char(int pict_type);
2568
2569 /**
2570 * returns codec bits per sample
2571 */
2572 int av_get_bits_per_sample(enum CodecID codec_id);
2573
2574 /* frame parsing */
2575 typedef struct AVCodecParserContext {
2576 void *priv_data;
2577 struct AVCodecParser *parser;
2578 int64_t frame_offset; /* offset of the current frame */
2579 int64_t cur_offset; /* current offset
2580 (incremented by each av_parser_parse()) */
2581 int64_t last_frame_offset; /* offset of the last frame */
2582 /* video info */
2583 int pict_type; /* XXX: put it back in AVCodecContext */
2584 int repeat_pict; /* XXX: put it back in AVCodecContext */
2585 int64_t pts; /* pts of the current frame */
2586 int64_t dts; /* dts of the current frame */
2587
2588 /* private data */
2589 int64_t last_pts;
2590 int64_t last_dts;
2591 int fetch_timestamp;
2592
2593 #define AV_PARSER_PTS_NB 4
2594 int cur_frame_start_index;
2595 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2596 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2597 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2598
2599 int flags;
2600 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2601 } AVCodecParserContext;
2602
2603 typedef struct AVCodecParser {
2604 int codec_ids[5]; /* several codec IDs are permitted */
2605 int priv_data_size;
2606 int (*parser_init)(AVCodecParserContext *s);
2607 int (*parser_parse)(AVCodecParserContext *s,
2608 AVCodecContext *avctx,
2609 uint8_t **poutbuf, int *poutbuf_size,
2610 const uint8_t *buf, int buf_size);
2611 void (*parser_close)(AVCodecParserContext *s);
2612 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2613 struct AVCodecParser *next;
2614 } AVCodecParser;
2615
2616 extern AVCodecParser *av_first_parser;
2617
2618 void av_register_codec_parser(AVCodecParser *parser);
2619 AVCodecParserContext *av_parser_init(int codec_id);
2620 int av_parser_parse(AVCodecParserContext *s,
2621 AVCodecContext *avctx,
2622 uint8_t **poutbuf, int *poutbuf_size,
2623 const uint8_t *buf, int buf_size,
2624 int64_t pts, int64_t dts);
2625 int av_parser_change(AVCodecParserContext *s,
2626 AVCodecContext *avctx,
2627 uint8_t **poutbuf, int *poutbuf_size,
2628 const uint8_t *buf, int buf_size, int keyframe);
2629 void av_parser_close(AVCodecParserContext *s);
2630
2631 extern AVCodecParser aac_parser;
2632 extern AVCodecParser ac3_parser;
2633 extern AVCodecParser cavsvideo_parser;
2634 extern AVCodecParser dvbsub_parser;
2635 extern AVCodecParser dvdsub_parser;
2636 extern AVCodecParser h261_parser;
2637 extern AVCodecParser h263_parser;
2638 extern AVCodecParser h264_parser;
2639 extern AVCodecParser mjpeg_parser;
2640 extern AVCodecParser mpeg4video_parser;
2641 extern AVCodecParser mpegaudio_parser;
2642 extern AVCodecParser mpegvideo_parser;
2643 extern AVCodecParser pnm_parser;
2644 extern AVCodecParser vc1_parser;
2645
2646
2647 typedef struct AVBitStreamFilterContext {
2648 void *priv_data;
2649 struct AVBitStreamFilter *filter;
2650 AVCodecParserContext *parser;
2651 struct AVBitStreamFilterContext *next;
2652 } AVBitStreamFilterContext;
2653
2654
2655 typedef struct AVBitStreamFilter {
2656 const char *name;
2657 int priv_data_size;
2658 int (*filter)(AVBitStreamFilterContext *bsfc,
2659 AVCodecContext *avctx, const char *args,
2660 uint8_t **poutbuf, int *poutbuf_size,
2661 const uint8_t *buf, int buf_size, int keyframe);
2662 struct AVBitStreamFilter *next;
2663 } AVBitStreamFilter;
2664
2665 extern AVBitStreamFilter *av_first_bitstream_filter;
2666
2667 void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2668 AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2669 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2670 AVCodecContext *avctx, const char *args,
2671 uint8_t **poutbuf, int *poutbuf_size,
2672 const uint8_t *buf, int buf_size, int keyframe);
2673 void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2674
2675 extern AVBitStreamFilter dump_extradata_bsf;
2676 extern AVBitStreamFilter remove_extradata_bsf;
2677 extern AVBitStreamFilter noise_bsf;
2678 extern AVBitStreamFilter mp3_header_compress_bsf;
2679 extern AVBitStreamFilter mp3_header_decompress_bsf;
2680 extern AVBitStreamFilter mjpega_dump_header_bsf;
2681
2682
2683 /* memory */
2684 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2685 /* for static data only */
2686 /* call av_free_static to release all staticaly allocated tables */
2687 void av_free_static(void);
2688 void *av_mallocz_static(unsigned int size);
2689 void *av_realloc_static(void *ptr, unsigned int size);
2690
2691 void img_copy(AVPicture *dst, const AVPicture *src,
2692 int pix_fmt, int width, int height);
2693
2694 int img_crop(AVPicture *dst, const AVPicture *src,
2695 int pix_fmt, int top_band, int left_band);
2696
2697 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2698 int padtop, int padbottom, int padleft, int padright, int *color);
2699
2700 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2701
2702 #ifdef __cplusplus
2703 }
2704 #endif
2705
2706 #endif /* AVCODEC_H */