move enum PixelFormat from libavcodec to libavutil
[libav.git] / libavcodec / avcodec.h
1 #ifndef AVCODEC_H
2 #define AVCODEC_H
3
4 /**
5 * @file avcodec.h
6 * external api header.
7 */
8
9
10 #ifdef __cplusplus
11 extern "C" {
12 #endif
13
14 #include "avutil.h"
15 #include <sys/types.h> /* size_t */
16
17 //FIXME the following 2 really dont belong in here
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "CVS"
20
21 #define AV_STRINGIFY(s) AV_TOSTRING(s)
22 #define AV_TOSTRING(s) #s
23
24 #define LIBAVCODEC_VERSION_INT ((51<<16)+(8<<8)+0)
25 #define LIBAVCODEC_VERSION 51.8.0
26 #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
27
28 #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
29
30 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
31 #define AV_TIME_BASE 1000000
32 #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
33
34 enum CodecID {
35 CODEC_ID_NONE,
36 CODEC_ID_MPEG1VIDEO,
37 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
38 CODEC_ID_MPEG2VIDEO_XVMC,
39 CODEC_ID_H261,
40 CODEC_ID_H263,
41 CODEC_ID_RV10,
42 CODEC_ID_RV20,
43 CODEC_ID_MJPEG,
44 CODEC_ID_MJPEGB,
45 CODEC_ID_LJPEG,
46 CODEC_ID_SP5X,
47 CODEC_ID_JPEGLS,
48 CODEC_ID_MPEG4,
49 CODEC_ID_RAWVIDEO,
50 CODEC_ID_MSMPEG4V1,
51 CODEC_ID_MSMPEG4V2,
52 CODEC_ID_MSMPEG4V3,
53 CODEC_ID_WMV1,
54 CODEC_ID_WMV2,
55 CODEC_ID_H263P,
56 CODEC_ID_H263I,
57 CODEC_ID_FLV1,
58 CODEC_ID_SVQ1,
59 CODEC_ID_SVQ3,
60 CODEC_ID_DVVIDEO,
61 CODEC_ID_HUFFYUV,
62 CODEC_ID_CYUV,
63 CODEC_ID_H264,
64 CODEC_ID_INDEO3,
65 CODEC_ID_VP3,
66 CODEC_ID_THEORA,
67 CODEC_ID_ASV1,
68 CODEC_ID_ASV2,
69 CODEC_ID_FFV1,
70 CODEC_ID_4XM,
71 CODEC_ID_VCR1,
72 CODEC_ID_CLJR,
73 CODEC_ID_MDEC,
74 CODEC_ID_ROQ,
75 CODEC_ID_INTERPLAY_VIDEO,
76 CODEC_ID_XAN_WC3,
77 CODEC_ID_XAN_WC4,
78 CODEC_ID_RPZA,
79 CODEC_ID_CINEPAK,
80 CODEC_ID_WS_VQA,
81 CODEC_ID_MSRLE,
82 CODEC_ID_MSVIDEO1,
83 CODEC_ID_IDCIN,
84 CODEC_ID_8BPS,
85 CODEC_ID_SMC,
86 CODEC_ID_FLIC,
87 CODEC_ID_TRUEMOTION1,
88 CODEC_ID_VMDVIDEO,
89 CODEC_ID_MSZH,
90 CODEC_ID_ZLIB,
91 CODEC_ID_QTRLE,
92 CODEC_ID_SNOW,
93 CODEC_ID_TSCC,
94 CODEC_ID_ULTI,
95 CODEC_ID_QDRAW,
96 CODEC_ID_VIXL,
97 CODEC_ID_QPEG,
98 CODEC_ID_XVID,
99 CODEC_ID_PNG,
100 CODEC_ID_PPM,
101 CODEC_ID_PBM,
102 CODEC_ID_PGM,
103 CODEC_ID_PGMYUV,
104 CODEC_ID_PAM,
105 CODEC_ID_FFVHUFF,
106 CODEC_ID_RV30,
107 CODEC_ID_RV40,
108 CODEC_ID_VC9,
109 CODEC_ID_WMV3,
110 CODEC_ID_LOCO,
111 CODEC_ID_WNV1,
112 CODEC_ID_AASC,
113 CODEC_ID_INDEO2,
114 CODEC_ID_FRAPS,
115 CODEC_ID_TRUEMOTION2,
116 CODEC_ID_BMP,
117 CODEC_ID_CSCD,
118 CODEC_ID_MMVIDEO,
119 CODEC_ID_ZMBV,
120 CODEC_ID_AVS,
121 CODEC_ID_SMACKVIDEO,
122 CODEC_ID_NUV,
123
124 /* various pcm "codecs" */
125 CODEC_ID_PCM_S16LE= 0x10000,
126 CODEC_ID_PCM_S16BE,
127 CODEC_ID_PCM_U16LE,
128 CODEC_ID_PCM_U16BE,
129 CODEC_ID_PCM_S8,
130 CODEC_ID_PCM_U8,
131 CODEC_ID_PCM_MULAW,
132 CODEC_ID_PCM_ALAW,
133 CODEC_ID_PCM_S32LE,
134 CODEC_ID_PCM_S32BE,
135 CODEC_ID_PCM_U32LE,
136 CODEC_ID_PCM_U32BE,
137 CODEC_ID_PCM_S24LE,
138 CODEC_ID_PCM_S24BE,
139 CODEC_ID_PCM_U24LE,
140 CODEC_ID_PCM_U24BE,
141 CODEC_ID_PCM_S24DAUD,
142
143 /* various adpcm codecs */
144 CODEC_ID_ADPCM_IMA_QT= 0x11000,
145 CODEC_ID_ADPCM_IMA_WAV,
146 CODEC_ID_ADPCM_IMA_DK3,
147 CODEC_ID_ADPCM_IMA_DK4,
148 CODEC_ID_ADPCM_IMA_WS,
149 CODEC_ID_ADPCM_IMA_SMJPEG,
150 CODEC_ID_ADPCM_MS,
151 CODEC_ID_ADPCM_4XM,
152 CODEC_ID_ADPCM_XA,
153 CODEC_ID_ADPCM_ADX,
154 CODEC_ID_ADPCM_EA,
155 CODEC_ID_ADPCM_G726,
156 CODEC_ID_ADPCM_CT,
157 CODEC_ID_ADPCM_SWF,
158 CODEC_ID_ADPCM_YAMAHA,
159 CODEC_ID_ADPCM_SBPRO_4,
160 CODEC_ID_ADPCM_SBPRO_3,
161 CODEC_ID_ADPCM_SBPRO_2,
162
163 /* AMR */
164 CODEC_ID_AMR_NB= 0x12000,
165 CODEC_ID_AMR_WB,
166
167 /* RealAudio codecs*/
168 CODEC_ID_RA_144= 0x13000,
169 CODEC_ID_RA_288,
170
171 /* various DPCM codecs */
172 CODEC_ID_ROQ_DPCM= 0x14000,
173 CODEC_ID_INTERPLAY_DPCM,
174 CODEC_ID_XAN_DPCM,
175 CODEC_ID_SOL_DPCM,
176
177 CODEC_ID_MP2= 0x15000,
178 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
179 CODEC_ID_AAC,
180 CODEC_ID_MPEG4AAC,
181 CODEC_ID_AC3,
182 CODEC_ID_DTS,
183 CODEC_ID_VORBIS,
184 CODEC_ID_DVAUDIO,
185 CODEC_ID_WMAV1,
186 CODEC_ID_WMAV2,
187 CODEC_ID_MACE3,
188 CODEC_ID_MACE6,
189 CODEC_ID_VMDAUDIO,
190 CODEC_ID_SONIC,
191 CODEC_ID_SONIC_LS,
192 CODEC_ID_FLAC,
193 CODEC_ID_MP3ADU,
194 CODEC_ID_MP3ON4,
195 CODEC_ID_SHORTEN,
196 CODEC_ID_ALAC,
197 CODEC_ID_WESTWOOD_SND1,
198 CODEC_ID_GSM,
199 CODEC_ID_QDM2,
200 CODEC_ID_COOK,
201 CODEC_ID_TRUESPEECH,
202 CODEC_ID_TTA,
203 CODEC_ID_SMACKAUDIO,
204
205 CODEC_ID_OGGTHEORA= 0x16000,
206
207 /* subtitle codecs */
208 CODEC_ID_DVD_SUBTITLE= 0x17000,
209 CODEC_ID_DVB_SUBTITLE,
210
211 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
212 stream (only used by libavformat) */
213 };
214
215 /* CODEC_ID_MP3LAME is absolete */
216 #define CODEC_ID_MP3LAME CODEC_ID_MP3
217
218 enum CodecType {
219 CODEC_TYPE_UNKNOWN = -1,
220 CODEC_TYPE_VIDEO,
221 CODEC_TYPE_AUDIO,
222 CODEC_TYPE_DATA,
223 CODEC_TYPE_SUBTITLE,
224 };
225
226 /* currently unused, may be used if 24/32 bits samples ever supported */
227 /* all in native endian */
228 enum SampleFormat {
229 SAMPLT_FMT_NONE = -1,
230 SAMPLE_FMT_U8, ///< unsigned 8 bits
231 SAMPLE_FMT_S16, ///< signed 16 bits
232 SAMPLE_FMT_S24, ///< signed 24 bits
233 SAMPLE_FMT_S32, ///< signed 32 bits
234 SAMPLE_FMT_FLT, ///< float
235 };
236
237 /* in bytes */
238 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
239
240 /**
241 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
242 * this is mainly needed because some optimized bitstream readers read
243 * 32 or 64 bit at once and could read over the end<br>
244 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
245 * MPEG bitstreams could cause overread and segfault
246 */
247 #define FF_INPUT_BUFFER_PADDING_SIZE 8
248
249 /**
250 * minimum encoding buffer size.
251 * used to avoid some checks during header writing
252 */
253 #define FF_MIN_BUFFER_SIZE 16384
254
255 /* motion estimation type, EPZS by default */
256 enum Motion_Est_ID {
257 ME_ZERO = 1,
258 ME_FULL,
259 ME_LOG,
260 ME_PHODS,
261 ME_EPZS,
262 ME_X1,
263 ME_HEX,
264 ME_UMH,
265 ME_ITER,
266 };
267
268 enum AVDiscard{
269 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
270 AVDISCARD_NONE =-16, ///< discard nothing
271 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
272 AVDISCARD_NONREF = 8, ///< discard all non reference
273 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
274 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
275 AVDISCARD_ALL = 48, ///< discard all
276 };
277
278 typedef struct RcOverride{
279 int start_frame;
280 int end_frame;
281 int qscale; // if this is 0 then quality_factor will be used instead
282 float quality_factor;
283 } RcOverride;
284
285 /* only for ME compatiblity with old apps */
286 extern int motion_estimation_method;
287
288 #define FF_MAX_B_FRAMES 16
289
290 /* encoding support
291 these flags can be passed in AVCodecContext.flags before initing
292 Note: not everything is supported yet.
293 */
294
295 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
296 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
297 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
298 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
299 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
300 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
301 /* parent program gurantees that the input for b-frame containing streams is not written to
302 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
303 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
304 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
305 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
306 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
307 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
308 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
309 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
310 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
311 of only at frame boundaries */
312 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
313 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
314 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
315 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
316 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
317 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
318 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
319 /* Fx : Flag for h263+ extra options */
320 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
321 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
322 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
323 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
324 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
325 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
326 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
327 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
328 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
329 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
330 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
331 #define CODEC_FLAG_CLOSED_GOP 0x80000000
332 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
333 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
334 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
335 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
336 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
337 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
338 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
339 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
340 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
341 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
342 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
343
344 /* Unsupported options :
345 * Syntax Arithmetic coding (SAC)
346 * Reference Picture Selection
347 * Independant Segment Decoding */
348 /* /Fx */
349 /* codec capabilities */
350
351 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
352 /**
353 * Codec uses get_buffer() for allocating buffers.
354 * direct rendering method 1
355 */
356 #define CODEC_CAP_DR1 0x0002
357 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
358 used */
359 #define CODEC_CAP_PARSE_ONLY 0x0004
360 #define CODEC_CAP_TRUNCATED 0x0008
361 /* codec can export data for HW decoding (XvMC) */
362 #define CODEC_CAP_HWACCEL 0x0010
363 /**
364 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
365 * if this is not set, the codec is guranteed to never be feeded with NULL data
366 */
367 #define CODEC_CAP_DELAY 0x0020
368
369 //the following defines may change, don't expect compatibility if you use them
370 #define MB_TYPE_INTRA4x4 0x0001
371 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
372 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
373 #define MB_TYPE_16x16 0x0008
374 #define MB_TYPE_16x8 0x0010
375 #define MB_TYPE_8x16 0x0020
376 #define MB_TYPE_8x8 0x0040
377 #define MB_TYPE_INTERLACED 0x0080
378 #define MB_TYPE_DIRECT2 0x0100 //FIXME
379 #define MB_TYPE_ACPRED 0x0200
380 #define MB_TYPE_GMC 0x0400
381 #define MB_TYPE_SKIP 0x0800
382 #define MB_TYPE_P0L0 0x1000
383 #define MB_TYPE_P1L0 0x2000
384 #define MB_TYPE_P0L1 0x4000
385 #define MB_TYPE_P1L1 0x8000
386 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
387 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
388 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
389 #define MB_TYPE_QUANT 0x00010000
390 #define MB_TYPE_CBP 0x00020000
391 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
392
393 /**
394 * Pan Scan area.
395 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
396 */
397 typedef struct AVPanScan{
398 /**
399 * id.
400 * - encoding: set by user.
401 * - decoding: set by lavc
402 */
403 int id;
404
405 /**
406 * width and height in 1/16 pel
407 * - encoding: set by user.
408 * - decoding: set by lavc
409 */
410 int width;
411 int height;
412
413 /**
414 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
415 * - encoding: set by user.
416 * - decoding: set by lavc
417 */
418 int16_t position[3][2];
419 }AVPanScan;
420
421 #define FF_COMMON_FRAME \
422 /**\
423 * pointer to the picture planes.\
424 * this might be different from the first allocated byte\
425 * - encoding: \
426 * - decoding: \
427 */\
428 uint8_t *data[4];\
429 int linesize[4];\
430 /**\
431 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
432 * this isn't used by lavc unless the default get/release_buffer() is used\
433 * - encoding: \
434 * - decoding: \
435 */\
436 uint8_t *base[4];\
437 /**\
438 * 1 -> keyframe, 0-> not\
439 * - encoding: set by lavc\
440 * - decoding: set by lavc\
441 */\
442 int key_frame;\
443 \
444 /**\
445 * picture type of the frame, see ?_TYPE below.\
446 * - encoding: set by lavc for coded_picture (and set by user for input)\
447 * - decoding: set by lavc\
448 */\
449 int pict_type;\
450 \
451 /**\
452 * presentation timestamp in time_base units (time when frame should be shown to user)\
453 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
454 * - encoding: MUST be set by user\
455 * - decoding: set by lavc\
456 */\
457 int64_t pts;\
458 \
459 /**\
460 * picture number in bitstream order.\
461 * - encoding: set by\
462 * - decoding: set by lavc\
463 */\
464 int coded_picture_number;\
465 /**\
466 * picture number in display order.\
467 * - encoding: set by\
468 * - decoding: set by lavc\
469 */\
470 int display_picture_number;\
471 \
472 /**\
473 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
474 * - encoding: set by lavc for coded_picture (and set by user for input)\
475 * - decoding: set by lavc\
476 */\
477 int quality; \
478 \
479 /**\
480 * buffer age (1->was last buffer and dint change, 2->..., ...).\
481 * set to INT_MAX if the buffer has not been used yet \
482 * - encoding: unused\
483 * - decoding: MUST be set by get_buffer()\
484 */\
485 int age;\
486 \
487 /**\
488 * is this picture used as reference\
489 * - encoding: unused\
490 * - decoding: set by lavc (before get_buffer() call))\
491 */\
492 int reference;\
493 \
494 /**\
495 * QP table\
496 * - encoding: unused\
497 * - decoding: set by lavc\
498 */\
499 int8_t *qscale_table;\
500 /**\
501 * QP store stride\
502 * - encoding: unused\
503 * - decoding: set by lavc\
504 */\
505 int qstride;\
506 \
507 /**\
508 * mbskip_table[mb]>=1 if MB didnt change\
509 * stride= mb_width = (width+15)>>4\
510 * - encoding: unused\
511 * - decoding: set by lavc\
512 */\
513 uint8_t *mbskip_table;\
514 \
515 /**\
516 * Motion vector table.\
517 * @code\
518 * example:\
519 * int mv_sample_log2= 4 - motion_subsample_log2;\
520 * int mb_width= (width+15)>>4;\
521 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
522 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
523 * @endcode\
524 * - encoding: set by user\
525 * - decoding: set by lavc\
526 */\
527 int16_t (*motion_val[2])[2];\
528 \
529 /**\
530 * Macroblock type table\
531 * mb_type_base + mb_width + 2\
532 * - encoding: set by user\
533 * - decoding: set by lavc\
534 */\
535 uint32_t *mb_type;\
536 \
537 /**\
538 * log2 of the size of the block which a single vector in motion_val represents: \
539 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
540 * - encoding: unused\
541 * - decoding: set by lavc\
542 */\
543 uint8_t motion_subsample_log2;\
544 \
545 /**\
546 * for some private data of the user\
547 * - encoding: unused\
548 * - decoding: set by user\
549 */\
550 void *opaque;\
551 \
552 /**\
553 * error\
554 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
555 * - decoding: unused\
556 */\
557 uint64_t error[4];\
558 \
559 /**\
560 * type of the buffer (to keep track of who has to dealloc data[*])\
561 * - encoding: set by the one who allocs it\
562 * - decoding: set by the one who allocs it\
563 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
564 */\
565 int type;\
566 \
567 /**\
568 * when decoding, this signal how much the picture must be delayed.\
569 * extra_delay = repeat_pict / (2*fps)\
570 * - encoding: unused\
571 * - decoding: set by lavc\
572 */\
573 int repeat_pict;\
574 \
575 /**\
576 * \
577 */\
578 int qscale_type;\
579 \
580 /**\
581 * The content of the picture is interlaced.\
582 * - encoding: set by user\
583 * - decoding: set by lavc (default 0)\
584 */\
585 int interlaced_frame;\
586 \
587 /**\
588 * if the content is interlaced, is top field displayed first.\
589 * - encoding: set by user\
590 * - decoding: set by lavc\
591 */\
592 int top_field_first;\
593 \
594 /**\
595 * Pan scan.\
596 * - encoding: set by user\
597 * - decoding: set by lavc\
598 */\
599 AVPanScan *pan_scan;\
600 \
601 /**\
602 * tell user application that palette has changed from previous frame.\
603 * - encoding: ??? (no palette-enabled encoder yet)\
604 * - decoding: set by lavc (default 0)\
605 */\
606 int palette_has_changed;\
607 \
608 /**\
609 * Codec suggestion on buffer type if != 0\
610 * - encoding: unused\
611 * - decoding: set by lavc (before get_buffer() call))\
612 */\
613 int buffer_hints;\
614 \
615 /**\
616 * DCT coeffitients\
617 * - encoding: unused\
618 * - decoding: set by lavc\
619 */\
620 short *dct_coeff;\
621 \
622 /**\
623 * Motion referece frame index\
624 * - encoding: set by user\
625 * - decoding: set by lavc\
626 */\
627 int8_t *ref_index[2];
628
629 #define FF_QSCALE_TYPE_MPEG1 0
630 #define FF_QSCALE_TYPE_MPEG2 1
631 #define FF_QSCALE_TYPE_H264 2
632
633 #define FF_BUFFER_TYPE_INTERNAL 1
634 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
635 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
636 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
637
638
639 #define FF_I_TYPE 1 // Intra
640 #define FF_P_TYPE 2 // Predicted
641 #define FF_B_TYPE 3 // Bi-dir predicted
642 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
643 #define FF_SI_TYPE 5
644 #define FF_SP_TYPE 6
645
646 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
647 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
648 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
649 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
650
651 /**
652 * Audio Video Frame.
653 */
654 typedef struct AVFrame {
655 FF_COMMON_FRAME
656 } AVFrame;
657
658 #define DEFAULT_FRAME_RATE_BASE 1001000
659
660 /**
661 * Used by av_log
662 */
663 typedef struct AVCLASS AVClass;
664 struct AVCLASS {
665 const char* class_name;
666 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
667 or AVFormatContext, which begin with an AVClass.
668 Needed because av_log is in libavcodec and has no visibility
669 of AVIn/OutputFormat */
670 struct AVOption *option;
671 };
672
673 /**
674 * main external api structure.
675 */
676 typedef struct AVCodecContext {
677 /**
678 * Info on struct for av_log
679 * - set by avcodec_alloc_context
680 */
681 AVClass *av_class;
682 /**
683 * the average bitrate.
684 * - encoding: set by user. unused for constant quantizer encoding
685 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
686 */
687 int bit_rate;
688
689 /**
690 * number of bits the bitstream is allowed to diverge from the reference.
691 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
692 * - encoding: set by user. unused for constant quantizer encoding
693 * - decoding: unused
694 */
695 int bit_rate_tolerance;
696
697 /**
698 * CODEC_FLAG_*.
699 * - encoding: set by user.
700 * - decoding: set by user.
701 */
702 int flags;
703
704 /**
705 * some codecs needs additionnal format info. It is stored here
706 * - encoding: set by user.
707 * - decoding: set by lavc. (FIXME is this ok?)
708 */
709 int sub_id;
710
711 /**
712 * motion estimation algorithm used for video coding.
713 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
714 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
715 * - encoding: MUST be set by user.
716 * - decoding: unused
717 */
718 int me_method;
719
720 /**
721 * some codecs need / can use extra-data like huffman tables.
722 * mjpeg: huffman tables
723 * rv10: additional flags
724 * mpeg4: global headers (they can be in the bitstream or here)
725 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
726 * then extradata_size to avoid prolems if its read with the bitstream reader
727 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
728 * - encoding: set/allocated/freed by lavc.
729 * - decoding: set/allocated/freed by user.
730 */
731 void *extradata;
732 int extradata_size;
733
734 /**
735 * this is the fundamental unit of time (in seconds) in terms
736 * of which frame timestamps are represented. for fixed-fps content,
737 * timebase should be 1/framerate and timestamp increments should be
738 * identically 1.
739 * - encoding: MUST be set by user
740 * - decoding: set by lavc.
741 */
742 AVRational time_base;
743
744 /* video only */
745 /**
746 * picture width / height.
747 * - encoding: MUST be set by user.
748 * - decoding: set by lavc.
749 * Note, for compatibility its possible to set this instead of
750 * coded_width/height before decoding
751 */
752 int width, height;
753
754 #define FF_ASPECT_EXTENDED 15
755
756 /**
757 * the number of pictures in a group of pitures, or 0 for intra_only.
758 * - encoding: set by user.
759 * - decoding: unused
760 */
761 int gop_size;
762
763 /**
764 * pixel format, see PIX_FMT_xxx.
765 * - encoding: set by user.
766 * - decoding: set by lavc.
767 */
768 enum PixelFormat pix_fmt;
769
770 /**
771 * Frame rate emulation. If not zero lower layer (i.e. format handler)
772 * has to read frames at native frame rate.
773 * - encoding: set by user.
774 * - decoding: unused.
775 */
776 int rate_emu;
777
778 /**
779 * if non NULL, 'draw_horiz_band' is called by the libavcodec
780 * decoder to draw an horizontal band. It improve cache usage. Not
781 * all codecs can do that. You must check the codec capabilities
782 * before
783 * - encoding: unused
784 * - decoding: set by user.
785 * @param height the height of the slice
786 * @param y the y position of the slice
787 * @param type 1->top field, 2->bottom field, 3->frame
788 * @param offset offset into the AVFrame.data from which the slice should be read
789 */
790 void (*draw_horiz_band)(struct AVCodecContext *s,
791 const AVFrame *src, int offset[4],
792 int y, int type, int height);
793
794 /* audio only */
795 int sample_rate; ///< samples per sec
796 int channels;
797
798 /**
799 * audio sample format.
800 * - encoding: set by user.
801 * - decoding: set by lavc.
802 */
803 enum SampleFormat sample_fmt; ///< sample format, currenly unused
804
805 /* the following data should not be initialized */
806 /**
807 * samples per packet. initialized when calling 'init'
808 */
809 int frame_size;
810 int frame_number; ///< audio or video frame number
811 int real_pict_num; ///< returns the real picture number of previous encoded frame
812
813 /**
814 * number of frames the decoded output will be delayed relative to
815 * the encoded input.
816 * - encoding: set by lavc.
817 * - decoding: unused
818 */
819 int delay;
820
821 /* - encoding parameters */
822 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
823 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
824
825 /**
826 * minimum quantizer.
827 * - encoding: set by user.
828 * - decoding: unused
829 */
830 int qmin;
831
832 /**
833 * maximum quantizer.
834 * - encoding: set by user.
835 * - decoding: unused
836 */
837 int qmax;
838
839 /**
840 * maximum quantizer difference etween frames.
841 * - encoding: set by user.
842 * - decoding: unused
843 */
844 int max_qdiff;
845
846 /**
847 * maximum number of b frames between non b frames.
848 * note: the output will be delayed by max_b_frames+1 relative to the input
849 * - encoding: set by user.
850 * - decoding: unused
851 */
852 int max_b_frames;
853
854 /**
855 * qscale factor between ip and b frames.
856 * - encoding: set by user.
857 * - decoding: unused
858 */
859 float b_quant_factor;
860
861 /** obsolete FIXME remove */
862 int rc_strategy;
863 #define FF_RC_STRATEGY_XVID 1
864
865 int b_frame_strategy;
866
867 /**
868 * hurry up amount.
869 * deprecated in favor of skip_idct and skip_frame
870 * - encoding: unused
871 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
872 */
873 int hurry_up;
874
875 struct AVCodec *codec;
876
877 void *priv_data;
878
879 /* unused, FIXME remove*/
880 int rtp_mode;
881
882 int rtp_payload_size; /* The size of the RTP payload: the coder will */
883 /* do it's best to deliver a chunk with size */
884 /* below rtp_payload_size, the chunk will start */
885 /* with a start code on some codecs like H.263 */
886 /* This doesn't take account of any particular */
887 /* headers inside the transmited RTP payload */
888
889
890 /* The RTP callback: This function is called */
891 /* every time the encoder has a packet to send */
892 /* Depends on the encoder if the data starts */
893 /* with a Start Code (it should) H.263 does. */
894 /* mb_nb contains the number of macroblocks */
895 /* encoded in the RTP payload */
896 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
897
898 /* statistics, used for 2-pass encoding */
899 int mv_bits;
900 int header_bits;
901 int i_tex_bits;
902 int p_tex_bits;
903 int i_count;
904 int p_count;
905 int skip_count;
906 int misc_bits;
907
908 /**
909 * number of bits used for the previously encoded frame.
910 * - encoding: set by lavc
911 * - decoding: unused
912 */
913 int frame_bits;
914
915 /**
916 * private data of the user, can be used to carry app specific stuff.
917 * - encoding: set by user
918 * - decoding: set by user
919 */
920 void *opaque;
921
922 char codec_name[32];
923 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
924 enum CodecID codec_id; /* see CODEC_ID_xxx */
925
926 /**
927 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
928 * this is used to workaround some encoder bugs
929 * - encoding: set by user, if not then the default based on codec_id will be used
930 * - decoding: set by user, will be converted to upper case by lavc during init
931 */
932 unsigned int codec_tag;
933
934 /**
935 * workaround bugs in encoders which sometimes cannot be detected automatically.
936 * - encoding: set by user
937 * - decoding: set by user
938 */
939 int workaround_bugs;
940 #define FF_BUG_AUTODETECT 1 ///< autodetection
941 #define FF_BUG_OLD_MSMPEG4 2
942 #define FF_BUG_XVID_ILACE 4
943 #define FF_BUG_UMP4 8
944 #define FF_BUG_NO_PADDING 16
945 #define FF_BUG_AMV 32
946 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
947 #define FF_BUG_QPEL_CHROMA 64
948 #define FF_BUG_STD_QPEL 128
949 #define FF_BUG_QPEL_CHROMA2 256
950 #define FF_BUG_DIRECT_BLOCKSIZE 512
951 #define FF_BUG_EDGE 1024
952 #define FF_BUG_HPEL_CHROMA 2048
953 #define FF_BUG_DC_CLIP 4096
954 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
955 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
956
957 /**
958 * luma single coeff elimination threshold.
959 * - encoding: set by user
960 * - decoding: unused
961 */
962 int luma_elim_threshold;
963
964 /**
965 * chroma single coeff elimination threshold.
966 * - encoding: set by user
967 * - decoding: unused
968 */
969 int chroma_elim_threshold;
970
971 /**
972 * strictly follow the std (MPEG4, ...).
973 * - encoding: set by user
974 * - decoding: unused
975 */
976 int strict_std_compliance;
977 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
978 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
979 #define FF_COMPLIANCE_NORMAL 0
980 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
981 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
982
983 /**
984 * qscale offset between ip and b frames.
985 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
986 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
987 * - encoding: set by user.
988 * - decoding: unused
989 */
990 float b_quant_offset;
991
992 /**
993 * error resilience higher values will detect more errors but may missdetect
994 * some more or less valid parts as errors.
995 * - encoding: unused
996 * - decoding: set by user
997 */
998 int error_resilience;
999 #define FF_ER_CAREFUL 1
1000 #define FF_ER_COMPLIANT 2
1001 #define FF_ER_AGGRESSIVE 3
1002 #define FF_ER_VERY_AGGRESSIVE 4
1003
1004 /**
1005 * called at the beginning of each frame to get a buffer for it.
1006 * if pic.reference is set then the frame will be read later by lavc
1007 * avcodec_align_dimensions() should be used to find the required width and
1008 * height, as they normally need to be rounded up to the next multiple of 16
1009 * - encoding: unused
1010 * - decoding: set by lavc, user can override
1011 */
1012 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1013
1014 /**
1015 * called to release buffers which where allocated with get_buffer.
1016 * a released buffer can be reused in get_buffer()
1017 * pic.data[*] must be set to NULL
1018 * - encoding: unused
1019 * - decoding: set by lavc, user can override
1020 */
1021 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1022
1023 /**
1024 * if 1 the stream has a 1 frame delay during decoding.
1025 * - encoding: set by lavc
1026 * - decoding: set by lavc
1027 */
1028 int has_b_frames;
1029
1030 /**
1031 * number of bytes per packet if constant and known or 0
1032 * used by some WAV based audio codecs
1033 */
1034 int block_align;
1035
1036 int parse_only; /* - decoding only: if true, only parsing is done
1037 (function avcodec_parse_frame()). The frame
1038 data is returned. Only MPEG codecs support this now. */
1039
1040 /**
1041 * 0-> h263 quant 1-> mpeg quant.
1042 * - encoding: set by user.
1043 * - decoding: unused
1044 */
1045 int mpeg_quant;
1046
1047 /**
1048 * pass1 encoding statistics output buffer.
1049 * - encoding: set by lavc
1050 * - decoding: unused
1051 */
1052 char *stats_out;
1053
1054 /**
1055 * pass2 encoding statistics input buffer.
1056 * concatenated stuff from stats_out of pass1 should be placed here
1057 * - encoding: allocated/set/freed by user
1058 * - decoding: unused
1059 */
1060 char *stats_in;
1061
1062 /**
1063 * ratecontrol qmin qmax limiting method.
1064 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1065 * - encoding: set by user.
1066 * - decoding: unused
1067 */
1068 float rc_qsquish;
1069
1070 float rc_qmod_amp;
1071 int rc_qmod_freq;
1072
1073 /**
1074 * ratecontrol override, see RcOverride.
1075 * - encoding: allocated/set/freed by user.
1076 * - decoding: unused
1077 */
1078 RcOverride *rc_override;
1079 int rc_override_count;
1080
1081 /**
1082 * rate control equation.
1083 * - encoding: set by user
1084 * - decoding: unused
1085 */
1086 char *rc_eq;
1087
1088 /**
1089 * maximum bitrate.
1090 * - encoding: set by user.
1091 * - decoding: unused
1092 */
1093 int rc_max_rate;
1094
1095 /**
1096 * minimum bitrate.
1097 * - encoding: set by user.
1098 * - decoding: unused
1099 */
1100 int rc_min_rate;
1101
1102 /**
1103 * decoder bitstream buffer size.
1104 * - encoding: set by user.
1105 * - decoding: unused
1106 */
1107 int rc_buffer_size;
1108 float rc_buffer_aggressivity;
1109
1110 /**
1111 * qscale factor between p and i frames.
1112 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1113 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1114 * - encoding: set by user.
1115 * - decoding: unused
1116 */
1117 float i_quant_factor;
1118
1119 /**
1120 * qscale offset between p and i frames.
1121 * - encoding: set by user.
1122 * - decoding: unused
1123 */
1124 float i_quant_offset;
1125
1126 /**
1127 * initial complexity for pass1 ratecontrol.
1128 * - encoding: set by user.
1129 * - decoding: unused
1130 */
1131 float rc_initial_cplx;
1132
1133 /**
1134 * dct algorithm, see FF_DCT_* below.
1135 * - encoding: set by user
1136 * - decoding: unused
1137 */
1138 int dct_algo;
1139 #define FF_DCT_AUTO 0
1140 #define FF_DCT_FASTINT 1
1141 #define FF_DCT_INT 2
1142 #define FF_DCT_MMX 3
1143 #define FF_DCT_MLIB 4
1144 #define FF_DCT_ALTIVEC 5
1145 #define FF_DCT_FAAN 6
1146
1147 /**
1148 * luminance masking (0-> disabled).
1149 * - encoding: set by user
1150 * - decoding: unused
1151 */
1152 float lumi_masking;
1153
1154 /**
1155 * temporary complexity masking (0-> disabled).
1156 * - encoding: set by user
1157 * - decoding: unused
1158 */
1159 float temporal_cplx_masking;
1160
1161 /**
1162 * spatial complexity masking (0-> disabled).
1163 * - encoding: set by user
1164 * - decoding: unused
1165 */
1166 float spatial_cplx_masking;
1167
1168 /**
1169 * p block masking (0-> disabled).
1170 * - encoding: set by user
1171 * - decoding: unused
1172 */
1173 float p_masking;
1174
1175 /**
1176 * darkness masking (0-> disabled).
1177 * - encoding: set by user
1178 * - decoding: unused
1179 */
1180 float dark_masking;
1181
1182
1183 /* for binary compatibility */
1184 int unused;
1185
1186 /**
1187 * idct algorithm, see FF_IDCT_* below.
1188 * - encoding: set by user
1189 * - decoding: set by user
1190 */
1191 int idct_algo;
1192 #define FF_IDCT_AUTO 0
1193 #define FF_IDCT_INT 1
1194 #define FF_IDCT_SIMPLE 2
1195 #define FF_IDCT_SIMPLEMMX 3
1196 #define FF_IDCT_LIBMPEG2MMX 4
1197 #define FF_IDCT_PS2 5
1198 #define FF_IDCT_MLIB 6
1199 #define FF_IDCT_ARM 7
1200 #define FF_IDCT_ALTIVEC 8
1201 #define FF_IDCT_SH4 9
1202 #define FF_IDCT_SIMPLEARM 10
1203 #define FF_IDCT_H264 11
1204 #define FF_IDCT_VP3 12
1205 #define FF_IDCT_IPP 13
1206 #define FF_IDCT_XVIDMMX 14
1207
1208 /**
1209 * slice count.
1210 * - encoding: set by lavc
1211 * - decoding: set by user (or 0)
1212 */
1213 int slice_count;
1214 /**
1215 * slice offsets in the frame in bytes.
1216 * - encoding: set/allocated by lavc
1217 * - decoding: set/allocated by user (or NULL)
1218 */
1219 int *slice_offset;
1220
1221 /**
1222 * error concealment flags.
1223 * - encoding: unused
1224 * - decoding: set by user
1225 */
1226 int error_concealment;
1227 #define FF_EC_GUESS_MVS 1
1228 #define FF_EC_DEBLOCK 2
1229
1230 /**
1231 * dsp_mask could be add used to disable unwanted CPU features
1232 * CPU features (i.e. MMX, SSE. ...)
1233 *
1234 * with FORCE flag you may instead enable given CPU features
1235 * (Dangerous: usable in case of misdetection, improper usage however will
1236 * result into program crash)
1237 */
1238 unsigned dsp_mask;
1239 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1240 /* lower 16 bits - CPU features */
1241 #ifdef HAVE_MMX
1242 #define FF_MM_MMX 0x0001 /* standard MMX */
1243 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1244 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1245 #define FF_MM_SSE 0x0008 /* SSE functions */
1246 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1247 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1248 #endif /* HAVE_MMX */
1249 #ifdef HAVE_IWMMXT
1250 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1251 #endif /* HAVE_IWMMXT */
1252
1253 /**
1254 * bits per sample/pixel from the demuxer (needed for huffyuv).
1255 * - encoding: set by lavc
1256 * - decoding: set by user
1257 */
1258 int bits_per_sample;
1259
1260 /**
1261 * prediction method (needed for huffyuv).
1262 * - encoding: set by user
1263 * - decoding: unused
1264 */
1265 int prediction_method;
1266 #define FF_PRED_LEFT 0
1267 #define FF_PRED_PLANE 1
1268 #define FF_PRED_MEDIAN 2
1269
1270 /**
1271 * sample aspect ratio (0 if unknown).
1272 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1273 * - encoding: set by user.
1274 * - decoding: set by lavc.
1275 */
1276 AVRational sample_aspect_ratio;
1277
1278 /**
1279 * the picture in the bitstream.
1280 * - encoding: set by lavc
1281 * - decoding: set by lavc
1282 */
1283 AVFrame *coded_frame;
1284
1285 /**
1286 * debug.
1287 * - encoding: set by user.
1288 * - decoding: set by user.
1289 */
1290 int debug;
1291 #define FF_DEBUG_PICT_INFO 1
1292 #define FF_DEBUG_RC 2
1293 #define FF_DEBUG_BITSTREAM 4
1294 #define FF_DEBUG_MB_TYPE 8
1295 #define FF_DEBUG_QP 16
1296 #define FF_DEBUG_MV 32
1297 #define FF_DEBUG_DCT_COEFF 0x00000040
1298 #define FF_DEBUG_SKIP 0x00000080
1299 #define FF_DEBUG_STARTCODE 0x00000100
1300 #define FF_DEBUG_PTS 0x00000200
1301 #define FF_DEBUG_ER 0x00000400
1302 #define FF_DEBUG_MMCO 0x00000800
1303 #define FF_DEBUG_BUGS 0x00001000
1304 #define FF_DEBUG_VIS_QP 0x00002000
1305 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1306
1307 /**
1308 * debug.
1309 * - encoding: set by user.
1310 * - decoding: set by user.
1311 */
1312 int debug_mv;
1313 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1314 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1315 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1316
1317 /**
1318 * error.
1319 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1320 * - decoding: unused
1321 */
1322 uint64_t error[4];
1323
1324 /**
1325 * minimum MB quantizer.
1326 * - encoding: unused
1327 * - decoding: unused
1328 */
1329 int mb_qmin;
1330
1331 /**
1332 * maximum MB quantizer.
1333 * - encoding: unused
1334 * - decoding: unused
1335 */
1336 int mb_qmax;
1337
1338 /**
1339 * motion estimation compare function.
1340 * - encoding: set by user.
1341 * - decoding: unused
1342 */
1343 int me_cmp;
1344 /**
1345 * subpixel motion estimation compare function.
1346 * - encoding: set by user.
1347 * - decoding: unused
1348 */
1349 int me_sub_cmp;
1350 /**
1351 * macroblock compare function (not supported yet).
1352 * - encoding: set by user.
1353 * - decoding: unused
1354 */
1355 int mb_cmp;
1356 /**
1357 * interlaced dct compare function
1358 * - encoding: set by user.
1359 * - decoding: unused
1360 */
1361 int ildct_cmp;
1362 #define FF_CMP_SAD 0
1363 #define FF_CMP_SSE 1
1364 #define FF_CMP_SATD 2
1365 #define FF_CMP_DCT 3
1366 #define FF_CMP_PSNR 4
1367 #define FF_CMP_BIT 5
1368 #define FF_CMP_RD 6
1369 #define FF_CMP_ZERO 7
1370 #define FF_CMP_VSAD 8
1371 #define FF_CMP_VSSE 9
1372 #define FF_CMP_NSSE 10
1373 #define FF_CMP_W53 11
1374 #define FF_CMP_W97 12
1375 #define FF_CMP_DCTMAX 13
1376 #define FF_CMP_DCT264 14
1377 #define FF_CMP_CHROMA 256
1378
1379 /**
1380 * ME diamond size & shape.
1381 * - encoding: set by user.
1382 * - decoding: unused
1383 */
1384 int dia_size;
1385
1386 /**
1387 * amount of previous MV predictors (2a+1 x 2a+1 square).
1388 * - encoding: set by user.
1389 * - decoding: unused
1390 */
1391 int last_predictor_count;
1392
1393 /**
1394 * pre pass for motion estimation.
1395 * - encoding: set by user.
1396 * - decoding: unused
1397 */
1398 int pre_me;
1399
1400 /**
1401 * motion estimation pre pass compare function.
1402 * - encoding: set by user.
1403 * - decoding: unused
1404 */
1405 int me_pre_cmp;
1406
1407 /**
1408 * ME pre pass diamond size & shape.
1409 * - encoding: set by user.
1410 * - decoding: unused
1411 */
1412 int pre_dia_size;
1413
1414 /**
1415 * subpel ME quality.
1416 * - encoding: set by user.
1417 * - decoding: unused
1418 */
1419 int me_subpel_quality;
1420
1421 /**
1422 * callback to negotiate the pixelFormat.
1423 * @param fmt is the list of formats which are supported by the codec,
1424 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1425 * the first is allways the native one
1426 * @return the choosen format
1427 * - encoding: unused
1428 * - decoding: set by user, if not set then the native format will always be choosen
1429 */
1430 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1431
1432 /**
1433 * DTG active format information (additionnal aspect ratio
1434 * information only used in DVB MPEG2 transport streams). 0 if
1435 * not set.
1436 *
1437 * - encoding: unused.
1438 * - decoding: set by decoder
1439 */
1440 int dtg_active_format;
1441 #define FF_DTG_AFD_SAME 8
1442 #define FF_DTG_AFD_4_3 9
1443 #define FF_DTG_AFD_16_9 10
1444 #define FF_DTG_AFD_14_9 11
1445 #define FF_DTG_AFD_4_3_SP_14_9 13
1446 #define FF_DTG_AFD_16_9_SP_14_9 14
1447 #define FF_DTG_AFD_SP_4_3 15
1448
1449 /**
1450 * Maximum motion estimation search range in subpel units.
1451 * if 0 then no limit
1452 *
1453 * - encoding: set by user.
1454 * - decoding: unused.
1455 */
1456 int me_range;
1457
1458 /**
1459 * intra quantizer bias.
1460 * - encoding: set by user.
1461 * - decoding: unused
1462 */
1463 int intra_quant_bias;
1464 #define FF_DEFAULT_QUANT_BIAS 999999
1465
1466 /**
1467 * inter quantizer bias.
1468 * - encoding: set by user.
1469 * - decoding: unused
1470 */
1471 int inter_quant_bias;
1472
1473 /**
1474 * color table ID.
1475 * - encoding: unused.
1476 * - decoding: which clrtable should be used for 8bit RGB images
1477 * table have to be stored somewhere FIXME
1478 */
1479 int color_table_id;
1480
1481 /**
1482 * internal_buffer count.
1483 * Don't touch, used by lavc default_get_buffer()
1484 */
1485 int internal_buffer_count;
1486
1487 /**
1488 * internal_buffers.
1489 * Don't touch, used by lavc default_get_buffer()
1490 */
1491 void *internal_buffer;
1492
1493 #define FF_LAMBDA_SHIFT 7
1494 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1495 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1496 #define FF_LAMBDA_MAX (256*128-1)
1497
1498 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1499 /**
1500 * global quality for codecs which cannot change it per frame.
1501 * this should be proportional to MPEG1/2/4 qscale.
1502 * - encoding: set by user.
1503 * - decoding: unused
1504 */
1505 int global_quality;
1506
1507 #define FF_CODER_TYPE_VLC 0
1508 #define FF_CODER_TYPE_AC 1
1509 /**
1510 * coder type
1511 * - encoding: set by user.
1512 * - decoding: unused
1513 */
1514 int coder_type;
1515
1516 /**
1517 * context model
1518 * - encoding: set by user.
1519 * - decoding: unused
1520 */
1521 int context_model;
1522 #if 0
1523 /**
1524 *
1525 * - encoding: unused
1526 * - decoding: set by user.
1527 */
1528 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1529 #endif
1530
1531 /**
1532 * slice flags
1533 * - encoding: unused
1534 * - decoding: set by user.
1535 */
1536 int slice_flags;
1537 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1538 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1539 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1540
1541 /**
1542 * XVideo Motion Acceleration
1543 * - encoding: forbidden
1544 * - decoding: set by decoder
1545 */
1546 int xvmc_acceleration;
1547
1548 /**
1549 * macroblock decision mode
1550 * - encoding: set by user.
1551 * - decoding: unused
1552 */
1553 int mb_decision;
1554 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1555 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1556 #define FF_MB_DECISION_RD 2 ///< rate distoration
1557
1558 /**
1559 * custom intra quantization matrix
1560 * - encoding: set by user, can be NULL
1561 * - decoding: set by lavc
1562 */
1563 uint16_t *intra_matrix;
1564
1565 /**
1566 * custom inter quantization matrix
1567 * - encoding: set by user, can be NULL
1568 * - decoding: set by lavc
1569 */
1570 uint16_t *inter_matrix;
1571
1572 /**
1573 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1574 * this is used to workaround some encoder bugs
1575 * - encoding: unused
1576 * - decoding: set by user, will be converted to upper case by lavc during init
1577 */
1578 unsigned int stream_codec_tag;
1579
1580 /**
1581 * scene change detection threshold.
1582 * 0 is default, larger means fewer detected scene changes
1583 * - encoding: set by user.
1584 * - decoding: unused
1585 */
1586 int scenechange_threshold;
1587
1588 /**
1589 * minimum lagrange multipler
1590 * - encoding: set by user.
1591 * - decoding: unused
1592 */
1593 int lmin;
1594
1595 /**
1596 * maximum lagrange multipler
1597 * - encoding: set by user.
1598 * - decoding: unused
1599 */
1600 int lmax;
1601
1602 /**
1603 * Palette control structure
1604 * - encoding: ??? (no palette-enabled encoder yet)
1605 * - decoding: set by user.
1606 */
1607 struct AVPaletteControl *palctrl;
1608
1609 /**
1610 * noise reduction strength
1611 * - encoding: set by user.
1612 * - decoding: unused
1613 */
1614 int noise_reduction;
1615
1616 /**
1617 * called at the beginning of a frame to get cr buffer for it.
1618 * buffer type (size, hints) must be the same. lavc won't check it.
1619 * lavc will pass previous buffer in pic, function should return
1620 * same buffer or new buffer with old frame "painted" into it.
1621 * if pic.data[0] == NULL must behave like get_buffer().
1622 * - encoding: unused
1623 * - decoding: set by lavc, user can override
1624 */
1625 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1626
1627 /**
1628 * number of bits which should be loaded into the rc buffer before decoding starts
1629 * - encoding: set by user.
1630 * - decoding: unused
1631 */
1632 int rc_initial_buffer_occupancy;
1633
1634 /**
1635 *
1636 * - encoding: set by user.
1637 * - decoding: unused
1638 */
1639 int inter_threshold;
1640
1641 /**
1642 * CODEC_FLAG2_*.
1643 * - encoding: set by user.
1644 * - decoding: set by user.
1645 */
1646 int flags2;
1647
1648 /**
1649 * simulates errors in the bitstream to test error concealment.
1650 * - encoding: set by user.
1651 * - decoding: unused.
1652 */
1653 int error_rate;
1654
1655 /**
1656 * MP3 antialias algorithm, see FF_AA_* below.
1657 * - encoding: unused
1658 * - decoding: set by user
1659 */
1660 int antialias_algo;
1661 #define FF_AA_AUTO 0
1662 #define FF_AA_FASTINT 1 //not implemented yet
1663 #define FF_AA_INT 2
1664 #define FF_AA_FLOAT 3
1665 /**
1666 * Quantizer noise shaping.
1667 * - encoding: set by user
1668 * - decoding: unused
1669 */
1670 int quantizer_noise_shaping;
1671
1672 /**
1673 * Thread count.
1674 * is used to decide how many independant tasks should be passed to execute()
1675 * - encoding: set by user
1676 * - decoding: set by user
1677 */
1678 int thread_count;
1679
1680 /**
1681 * the codec may call this to execute several independant things. it will return only after
1682 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1683 * default implementation will execute the parts serially
1684 * @param count the number of things to execute
1685 * - encoding: set by lavc, user can override
1686 * - decoding: set by lavc, user can override
1687 */
1688 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1689
1690 /**
1691 * Thread opaque.
1692 * can be used by execute() to store some per AVCodecContext stuff.
1693 * - encoding: set by execute()
1694 * - decoding: set by execute()
1695 */
1696 void *thread_opaque;
1697
1698 /**
1699 * Motion estimation threshold. under which no motion estimation is
1700 * performed, but instead the user specified motion vectors are used
1701 *
1702 * - encoding: set by user
1703 * - decoding: unused
1704 */
1705 int me_threshold;
1706
1707 /**
1708 * Macroblock threshold. under which the user specified macroblock types will be used
1709 * - encoding: set by user
1710 * - decoding: unused
1711 */
1712 int mb_threshold;
1713
1714 /**
1715 * precision of the intra dc coefficient - 8.
1716 * - encoding: set by user
1717 * - decoding: unused
1718 */
1719 int intra_dc_precision;
1720
1721 /**
1722 * noise vs. sse weight for the nsse comparsion function.
1723 * - encoding: set by user
1724 * - decoding: unused
1725 */
1726 int nsse_weight;
1727
1728 /**
1729 * number of macroblock rows at the top which are skipped.
1730 * - encoding: unused
1731 * - decoding: set by user
1732 */
1733 int skip_top;
1734
1735 /**
1736 * number of macroblock rows at the bottom which are skipped.
1737 * - encoding: unused
1738 * - decoding: set by user
1739 */
1740 int skip_bottom;
1741
1742 /**
1743 * profile
1744 * - encoding: set by user
1745 * - decoding: set by lavc
1746 */
1747 int profile;
1748 #define FF_PROFILE_UNKNOWN -99
1749
1750 /**
1751 * level
1752 * - encoding: set by user
1753 * - decoding: set by lavc
1754 */
1755 int level;
1756 #define FF_LEVEL_UNKNOWN -99
1757
1758 /**
1759 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1760 * - encoding: unused
1761 * - decoding: set by user
1762 */
1763 int lowres;
1764
1765 /**
1766 * bitsream width / height. may be different from width/height if lowres
1767 * or other things are used
1768 * - encoding: unused
1769 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1770 */
1771 int coded_width, coded_height;
1772
1773 /**
1774 * frame skip threshold
1775 * - encoding: set by user
1776 * - decoding: unused
1777 */
1778 int frame_skip_threshold;
1779
1780 /**
1781 * frame skip factor
1782 * - encoding: set by user
1783 * - decoding: unused
1784 */
1785 int frame_skip_factor;
1786
1787 /**
1788 * frame skip exponent
1789 * - encoding: set by user
1790 * - decoding: unused
1791 */
1792 int frame_skip_exp;
1793
1794 /**
1795 * frame skip comparission function
1796 * - encoding: set by user.
1797 * - decoding: unused
1798 */
1799 int frame_skip_cmp;
1800
1801 /**
1802 * border processing masking. raises the quantizer for mbs on the borders
1803 * of the picture.
1804 * - encoding: set by user
1805 * - decoding: unused
1806 */
1807 float border_masking;
1808
1809 /**
1810 * minimum MB lagrange multipler.
1811 * - encoding: set by user.
1812 * - decoding: unused
1813 */
1814 int mb_lmin;
1815
1816 /**
1817 * maximum MB lagrange multipler.
1818 * - encoding: set by user.
1819 * - decoding: unused
1820 */
1821 int mb_lmax;
1822
1823 /**
1824 *
1825 * - encoding: set by user.
1826 * - decoding: unused
1827 */
1828 int me_penalty_compensation;
1829
1830 /**
1831 *
1832 * - encoding: unused
1833 * - decoding: set by user.
1834 */
1835 enum AVDiscard skip_loop_filter;
1836
1837 /**
1838 *
1839 * - encoding: unused
1840 * - decoding: set by user.
1841 */
1842 enum AVDiscard skip_idct;
1843
1844 /**
1845 *
1846 * - encoding: unused
1847 * - decoding: set by user.
1848 */
1849 enum AVDiscard skip_frame;
1850
1851 /**
1852 *
1853 * - encoding: set by user.
1854 * - decoding: unused
1855 */
1856 int bidir_refine;
1857
1858 /**
1859 *
1860 * - encoding: set by user.
1861 * - decoding: unused
1862 */
1863 int brd_scale;
1864
1865 /**
1866 * constant rate factor - quality-based VBR - values ~correspond to qps
1867 * - encoding: set by user.
1868 * - decoding: unused
1869 */
1870 int crf;
1871
1872 /**
1873 * constant quantization parameter rate control method
1874 * - encoding: set by user.
1875 * - decoding: unused
1876 */
1877 int cqp;
1878
1879 /**
1880 * minimum gop size
1881 * - encoding: set by user.
1882 * - decoding: unused
1883 */
1884 int keyint_min;
1885
1886 /**
1887 * number of reference frames
1888 * - encoding: set by user.
1889 * - decoding: unused
1890 */
1891 int refs;
1892
1893 /**
1894 * chroma qp offset from luma
1895 * - encoding: set by user.
1896 * - decoding: unused
1897 */
1898 int chromaoffset;
1899
1900 /**
1901 * influences how often b-frames are used
1902 * - encoding: set by user.
1903 * - decoding: unused
1904 */
1905 int bframebias;
1906
1907 /**
1908 * trellis RD quantization
1909 * - encoding: set by user.
1910 * - decoding: unused
1911 */
1912 int trellis;
1913
1914 /**
1915 * reduce fluctuations in qp (before curve compression)
1916 * - encoding: set by user.
1917 * - decoding: unused
1918 */
1919 float complexityblur;
1920
1921 /**
1922 * in-loop deblocking filter alphac0 parameter
1923 * alpha is in the range -6...6
1924 * - encoding: set by user.
1925 * - decoding: unused
1926 */
1927 int deblockalpha;
1928
1929 /**
1930 * in-loop deblocking filter beta parameter
1931 * beta is in the range -6...6
1932 * - encoding: set by user.
1933 * - decoding: unused
1934 */
1935 int deblockbeta;
1936
1937 /**
1938 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1939 * - encoding: set by user.
1940 * - decoding: unused
1941 */
1942 int partitions;
1943 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1944 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1945 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1946 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1947 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1948
1949 /**
1950 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1951 * - encoding: set by user.
1952 * - decoding: unused
1953 */
1954 int directpred;
1955
1956 /**
1957 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1958 * - encoding: set by user.
1959 * - decoding: unused
1960 */
1961 int cutoff;
1962
1963 /**
1964 * multiplied by qscale for each frame and added to scene_change_score
1965 * - encoding: set by user.
1966 * - decoding: unused
1967 */
1968 int scenechange_factor;
1969 } AVCodecContext;
1970
1971 /**
1972 * AVCodec.
1973 */
1974 typedef struct AVCodec {
1975 const char *name;
1976 enum CodecType type;
1977 enum CodecID id;
1978 int priv_data_size;
1979 int (*init)(AVCodecContext *);
1980 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1981 int (*close)(AVCodecContext *);
1982 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1983 uint8_t *buf, int buf_size);
1984 int capabilities;
1985 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
1986 void *dummy; // FIXME remove next time we break binary compatibility
1987 #endif
1988 struct AVCodec *next;
1989 void (*flush)(AVCodecContext *);
1990 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1991 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1992 } AVCodec;
1993
1994 /**
1995 * four components are given, that's all.
1996 * the last component is alpha
1997 */
1998 typedef struct AVPicture {
1999 uint8_t *data[4];
2000 int linesize[4]; ///< number of bytes per line
2001 } AVPicture;
2002
2003 /**
2004 * AVPaletteControl
2005 * This structure defines a method for communicating palette changes
2006 * between and demuxer and a decoder.
2007 */
2008 #define AVPALETTE_SIZE 1024
2009 #define AVPALETTE_COUNT 256
2010 typedef struct AVPaletteControl {
2011
2012 /* demuxer sets this to 1 to indicate the palette has changed;
2013 * decoder resets to 0 */
2014 int palette_changed;
2015
2016 /* 4-byte ARGB palette entries, stored in native byte order; note that
2017 * the individual palette components should be on a 8-bit scale; if
2018 * the palette data comes from a IBM VGA native format, the component
2019 * data is probably 6 bits in size and needs to be scaled */
2020 unsigned int palette[AVPALETTE_COUNT];
2021
2022 } AVPaletteControl;
2023
2024 typedef struct AVSubtitleRect {
2025 uint16_t x;
2026 uint16_t y;
2027 uint16_t w;
2028 uint16_t h;
2029 uint16_t nb_colors;
2030 int linesize;
2031 uint32_t *rgba_palette;
2032 uint8_t *bitmap;
2033 } AVSubtitleRect;
2034
2035 typedef struct AVSubtitle {
2036 uint16_t format; /* 0 = graphics */
2037 uint32_t start_display_time; /* relative to packet pts, in ms */
2038 uint32_t end_display_time; /* relative to packet pts, in ms */
2039 uint32_t num_rects;
2040 AVSubtitleRect *rects;
2041 } AVSubtitle;
2042
2043 extern AVCodec ac3_encoder;
2044 extern AVCodec mp2_encoder;
2045 extern AVCodec mp3lame_encoder;
2046 extern AVCodec oggvorbis_encoder;
2047 extern AVCodec oggtheora_encoder;
2048 extern AVCodec faac_encoder;
2049 extern AVCodec xvid_encoder;
2050 extern AVCodec mpeg1video_encoder;
2051 extern AVCodec mpeg2video_encoder;
2052 extern AVCodec h261_encoder;
2053 extern AVCodec h263_encoder;
2054 extern AVCodec h263p_encoder;
2055 extern AVCodec flv_encoder;
2056 extern AVCodec rv10_encoder;
2057 extern AVCodec rv20_encoder;
2058 extern AVCodec dvvideo_encoder;
2059 extern AVCodec mjpeg_encoder;
2060 extern AVCodec ljpeg_encoder;
2061 extern AVCodec jpegls_encoder;
2062 extern AVCodec png_encoder;
2063 extern AVCodec ppm_encoder;
2064 extern AVCodec pgm_encoder;
2065 extern AVCodec pgmyuv_encoder;
2066 extern AVCodec pbm_encoder;
2067 extern AVCodec pam_encoder;
2068 extern AVCodec mpeg4_encoder;
2069 extern AVCodec msmpeg4v1_encoder;
2070 extern AVCodec msmpeg4v2_encoder;
2071 extern AVCodec msmpeg4v3_encoder;
2072 extern AVCodec wmv1_encoder;
2073 extern AVCodec wmv2_encoder;
2074 extern AVCodec huffyuv_encoder;
2075 extern AVCodec ffvhuff_encoder;
2076 extern AVCodec h264_encoder;
2077 extern AVCodec asv1_encoder;
2078 extern AVCodec asv2_encoder;
2079 extern AVCodec vcr1_encoder;
2080 extern AVCodec ffv1_encoder;
2081 extern AVCodec snow_encoder;
2082 extern AVCodec mdec_encoder;
2083 extern AVCodec zlib_encoder;
2084 extern AVCodec sonic_encoder;
2085 extern AVCodec sonic_ls_encoder;
2086 extern AVCodec svq1_encoder;
2087 extern AVCodec x264_encoder;
2088
2089 extern AVCodec h263_decoder;
2090 extern AVCodec h261_decoder;
2091 extern AVCodec mpeg4_decoder;
2092 extern AVCodec msmpeg4v1_decoder;
2093 extern AVCodec msmpeg4v2_decoder;
2094 extern AVCodec msmpeg4v3_decoder;
2095 extern AVCodec wmv1_decoder;
2096 extern AVCodec wmv2_decoder;
2097 extern AVCodec vc9_decoder;
2098 extern AVCodec wmv3_decoder;
2099 extern AVCodec mpeg1video_decoder;
2100 extern AVCodec mpeg2video_decoder;
2101 extern AVCodec mpegvideo_decoder;
2102 extern AVCodec mpeg_xvmc_decoder;
2103 extern AVCodec h263i_decoder;
2104 extern AVCodec flv_decoder;
2105 extern AVCodec rv10_decoder;
2106 extern AVCodec rv20_decoder;
2107 extern AVCodec rv30_decoder;
2108 extern AVCodec rv40_decoder;
2109 extern AVCodec svq1_decoder;
2110 extern AVCodec svq3_decoder;
2111 extern AVCodec dvvideo_decoder;
2112 extern AVCodec wmav1_decoder;
2113 extern AVCodec wmav2_decoder;
2114 extern AVCodec mjpeg_decoder;
2115 extern AVCodec mjpegb_decoder;
2116 extern AVCodec sp5x_decoder;
2117 extern AVCodec png_decoder;
2118 extern AVCodec mp2_decoder;
2119 extern AVCodec mp3_decoder;
2120 extern AVCodec mp3adu_decoder;
2121 extern AVCodec mp3on4_decoder;
2122 extern AVCodec qdm2_decoder;
2123 extern AVCodec cook_decoder;
2124 extern AVCodec truespeech_decoder;
2125 extern AVCodec tta_decoder;
2126 extern AVCodec mace3_decoder;
2127 extern AVCodec mace6_decoder;
2128 extern AVCodec huffyuv_decoder;
2129 extern AVCodec ffvhuff_decoder;
2130 extern AVCodec oggvorbis_decoder;
2131 extern AVCodec oggtheora_decoder;
2132 extern AVCodec cyuv_decoder;
2133 extern AVCodec h264_decoder;
2134 extern AVCodec indeo3_decoder;
2135 extern AVCodec vp3_decoder;
2136 extern AVCodec theora_decoder;
2137 extern AVCodec amr_nb_decoder;
2138 extern AVCodec amr_nb_encoder;
2139 extern AVCodec amr_wb_encoder;
2140 extern AVCodec amr_wb_decoder;
2141 extern AVCodec aac_decoder;
2142 extern AVCodec mpeg4aac_decoder;
2143 extern AVCodec asv1_decoder;
2144 extern AVCodec asv2_decoder;
2145 extern AVCodec vcr1_decoder;
2146 extern AVCodec cljr_decoder;
2147 extern AVCodec ffv1_decoder;
2148 extern AVCodec snow_decoder;
2149 extern AVCodec fourxm_decoder;
2150 extern AVCodec mdec_decoder;
2151 extern AVCodec roq_decoder;
2152 extern AVCodec interplay_video_decoder;
2153 extern AVCodec xan_wc3_decoder;
2154 extern AVCodec rpza_decoder;
2155 extern AVCodec cinepak_decoder;
2156 extern AVCodec msrle_decoder;
2157 extern AVCodec msvideo1_decoder;
2158 extern AVCodec vqa_decoder;
2159 extern AVCodec idcin_decoder;
2160 extern AVCodec eightbps_decoder;
2161 extern AVCodec smc_decoder;
2162 extern AVCodec flic_decoder;
2163 extern AVCodec vmdvideo_decoder;
2164 extern AVCodec vmdaudio_decoder;
2165 extern AVCodec truemotion1_decoder;
2166 extern AVCodec truemotion2_decoder;
2167 extern AVCodec mszh_decoder;
2168 extern AVCodec zlib_decoder;
2169 extern AVCodec ra_144_decoder;
2170 extern AVCodec ra_288_decoder;
2171 extern AVCodec roq_dpcm_decoder;
2172 extern AVCodec interplay_dpcm_decoder;
2173 extern AVCodec xan_dpcm_decoder;
2174 extern AVCodec sol_dpcm_decoder;
2175 extern AVCodec sonic_decoder;
2176 extern AVCodec qtrle_decoder;
2177 extern AVCodec flac_decoder;
2178 extern AVCodec tscc_decoder;
2179 extern AVCodec cscd_decoder;
2180 extern AVCodec nuv_decoder;
2181 extern AVCodec ulti_decoder;
2182 extern AVCodec qdraw_decoder;
2183 extern AVCodec xl_decoder;
2184 extern AVCodec qpeg_decoder;
2185 extern AVCodec shorten_decoder;
2186 extern AVCodec loco_decoder;
2187 extern AVCodec wnv1_decoder;
2188 extern AVCodec aasc_decoder;
2189 extern AVCodec alac_decoder;
2190 extern AVCodec ws_snd1_decoder;
2191 extern AVCodec indeo2_decoder;
2192 extern AVCodec vorbis_decoder;
2193 extern AVCodec fraps_decoder;
2194 extern AVCodec libgsm_encoder;
2195 extern AVCodec libgsm_decoder;
2196 extern AVCodec bmp_decoder;
2197 extern AVCodec mmvideo_decoder;
2198 extern AVCodec zmbv_decoder;
2199 extern AVCodec avs_decoder;
2200 extern AVCodec smacker_decoder;
2201 extern AVCodec smackaud_decoder;
2202
2203 /* pcm codecs */
2204 #define PCM_CODEC(id, name) \
2205 extern AVCodec name ## _decoder; \
2206 extern AVCodec name ## _encoder
2207
2208 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2209 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2210 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2211 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2212 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2213 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2214 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2215 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2216 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2217 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2218 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2219 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2220 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2221 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2222 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2223 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2224 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2225
2226 /* adpcm codecs */
2227
2228 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2229 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2230 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2231 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2232 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2233 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2234 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2235 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2236 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2237 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2238 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2239 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2240 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2241 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2242 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2243 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2244 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2245 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2246
2247 #undef PCM_CODEC
2248
2249 /* dummy raw video codec */
2250 extern AVCodec rawvideo_encoder;
2251 extern AVCodec rawvideo_decoder;
2252
2253 /* the following codecs use external GPL libs */
2254 extern AVCodec ac3_decoder;
2255 extern AVCodec dts_decoder;
2256
2257 /* subtitles */
2258 extern AVCodec dvdsub_encoder;
2259 extern AVCodec dvdsub_decoder;
2260 extern AVCodec dvbsub_encoder;
2261 extern AVCodec dvbsub_decoder;
2262
2263 /* resample.c */
2264
2265 struct ReSampleContext;
2266 struct AVResampleContext;
2267
2268 typedef struct ReSampleContext ReSampleContext;
2269
2270 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2271 int output_rate, int input_rate);
2272 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2273 void audio_resample_close(ReSampleContext *s);
2274
2275 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2276 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2277 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2278 void av_resample_close(struct AVResampleContext *c);
2279
2280 /* YUV420 format is assumed ! */
2281
2282 struct ImgReSampleContext;
2283
2284 typedef struct ImgReSampleContext ImgReSampleContext;
2285
2286 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2287 int input_width, int input_height);
2288
2289 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2290 int iwidth, int iheight,
2291 int topBand, int bottomBand,
2292 int leftBand, int rightBand,
2293 int padtop, int padbottom,
2294 int padleft, int padright);
2295
2296
2297 void img_resample(ImgReSampleContext *s,
2298 AVPicture *output, const AVPicture *input);
2299
2300 void img_resample_close(ImgReSampleContext *s);
2301
2302 /**
2303 * Allocate memory for a picture. Call avpicture_free to free it.
2304 *
2305 * @param picture the picture to be filled in.
2306 * @param pix_fmt the format of the picture.
2307 * @param width the width of the picture.
2308 * @param height the height of the picture.
2309 * @return 0 if successful, -1 if not.
2310 */
2311 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2312
2313 /* Free a picture previously allocated by avpicture_alloc. */
2314 void avpicture_free(AVPicture *picture);
2315
2316 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2317 int pix_fmt, int width, int height);
2318 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2319 unsigned char *dest, int dest_size);
2320 int avpicture_get_size(int pix_fmt, int width, int height);
2321 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2322 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2323 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2324 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2325 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2326
2327 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2328 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2329 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2330 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2331 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2332 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2333
2334 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2335 int has_alpha);
2336 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2337 int has_alpha, int *loss_ptr);
2338
2339 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2340 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2341 int img_get_alpha_info(const AVPicture *src,
2342 int pix_fmt, int width, int height);
2343
2344 /* convert among pixel formats */
2345 int img_convert(AVPicture *dst, int dst_pix_fmt,
2346 const AVPicture *src, int pix_fmt,
2347 int width, int height);
2348
2349 /* deinterlace a picture */
2350 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2351 int pix_fmt, int width, int height);
2352
2353 /* external high level API */
2354
2355 extern AVCodec *first_avcodec;
2356
2357 /* returns LIBAVCODEC_VERSION_INT constant */
2358 unsigned avcodec_version(void);
2359 /* returns LIBAVCODEC_BUILD constant */
2360 unsigned avcodec_build(void);
2361 void avcodec_init(void);
2362
2363 void register_avcodec(AVCodec *format);
2364 AVCodec *avcodec_find_encoder(enum CodecID id);
2365 AVCodec *avcodec_find_encoder_by_name(const char *name);
2366 AVCodec *avcodec_find_decoder(enum CodecID id);
2367 AVCodec *avcodec_find_decoder_by_name(const char *name);
2368 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2369
2370 void avcodec_get_context_defaults(AVCodecContext *s);
2371 AVCodecContext *avcodec_alloc_context(void);
2372 void avcodec_get_frame_defaults(AVFrame *pic);
2373 AVFrame *avcodec_alloc_frame(void);
2374
2375 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2376 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2377 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2378 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2379 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2380 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2381
2382 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2383 void avcodec_thread_free(AVCodecContext *s);
2384 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2385 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2386 //FIXME func typedef
2387
2388 /**
2389 * opens / inits the AVCodecContext.
2390 * not thread save!
2391 */
2392 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2393
2394 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2395 int *frame_size_ptr,
2396 uint8_t *buf, int buf_size);
2397 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2398 int *got_picture_ptr,
2399 uint8_t *buf, int buf_size);
2400 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2401 int *got_sub_ptr,
2402 const uint8_t *buf, int buf_size);
2403 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2404 int *data_size_ptr,
2405 uint8_t *buf, int buf_size);
2406 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2407 const short *samples);
2408 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2409 const AVFrame *pict);
2410 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2411 const AVSubtitle *sub);
2412
2413 int avcodec_close(AVCodecContext *avctx);
2414
2415 void avcodec_register_all(void);
2416
2417 void avcodec_flush_buffers(AVCodecContext *avctx);
2418
2419 void avcodec_default_free_buffers(AVCodecContext *s);
2420
2421 /* misc usefull functions */
2422
2423 /**
2424 * returns a single letter to describe the picture type
2425 */
2426 char av_get_pict_type_char(int pict_type);
2427
2428
2429 /* frame parsing */
2430 typedef struct AVCodecParserContext {
2431 void *priv_data;
2432 struct AVCodecParser *parser;
2433 int64_t frame_offset; /* offset of the current frame */
2434 int64_t cur_offset; /* current offset
2435 (incremented by each av_parser_parse()) */
2436 int64_t last_frame_offset; /* offset of the last frame */
2437 /* video info */
2438 int pict_type; /* XXX: put it back in AVCodecContext */
2439 int repeat_pict; /* XXX: put it back in AVCodecContext */
2440 int64_t pts; /* pts of the current frame */
2441 int64_t dts; /* dts of the current frame */
2442
2443 /* private data */
2444 int64_t last_pts;
2445 int64_t last_dts;
2446 int fetch_timestamp;
2447
2448 #define AV_PARSER_PTS_NB 4
2449 int cur_frame_start_index;
2450 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2451 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2452 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2453
2454 int flags;
2455 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2456 } AVCodecParserContext;
2457
2458 typedef struct AVCodecParser {
2459 int codec_ids[5]; /* several codec IDs are permitted */
2460 int priv_data_size;
2461 int (*parser_init)(AVCodecParserContext *s);
2462 int (*parser_parse)(AVCodecParserContext *s,
2463 AVCodecContext *avctx,
2464 uint8_t **poutbuf, int *poutbuf_size,
2465 const uint8_t *buf, int buf_size);
2466 void (*parser_close)(AVCodecParserContext *s);
2467 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2468 struct AVCodecParser *next;
2469 } AVCodecParser;
2470
2471 extern AVCodecParser *av_first_parser;
2472
2473 void av_register_codec_parser(AVCodecParser *parser);
2474 AVCodecParserContext *av_parser_init(int codec_id);
2475 int av_parser_parse(AVCodecParserContext *s,
2476 AVCodecContext *avctx,
2477 uint8_t **poutbuf, int *poutbuf_size,
2478 const uint8_t *buf, int buf_size,
2479 int64_t pts, int64_t dts);
2480 int av_parser_change(AVCodecParserContext *s,
2481 AVCodecContext *avctx,
2482 uint8_t **poutbuf, int *poutbuf_size,
2483 const uint8_t *buf, int buf_size, int keyframe);
2484 void av_parser_close(AVCodecParserContext *s);
2485
2486 extern AVCodecParser mpegvideo_parser;
2487 extern AVCodecParser mpeg4video_parser;
2488 extern AVCodecParser h261_parser;
2489 extern AVCodecParser h263_parser;
2490 extern AVCodecParser h264_parser;
2491 extern AVCodecParser mjpeg_parser;
2492 extern AVCodecParser pnm_parser;
2493 extern AVCodecParser mpegaudio_parser;
2494 extern AVCodecParser ac3_parser;
2495 extern AVCodecParser dvdsub_parser;
2496 extern AVCodecParser dvbsub_parser;
2497 extern AVCodecParser aac_parser;
2498
2499 /* memory */
2500 void *av_malloc(unsigned int size);
2501 void *av_mallocz(unsigned int size);
2502 void *av_realloc(void *ptr, unsigned int size);
2503 void av_free(void *ptr);
2504 char *av_strdup(const char *s);
2505 void av_freep(void *ptr);
2506 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2507 /* for static data only */
2508 /* call av_free_static to release all staticaly allocated tables */
2509 void av_free_static(void);
2510 void *av_mallocz_static(unsigned int size);
2511 void *av_realloc_static(void *ptr, unsigned int size);
2512
2513 /* add by bero : in adx.c */
2514 int is_adx(const unsigned char *buf,size_t bufsize);
2515
2516 void img_copy(AVPicture *dst, const AVPicture *src,
2517 int pix_fmt, int width, int height);
2518
2519 int img_crop(AVPicture *dst, const AVPicture *src,
2520 int pix_fmt, int top_band, int left_band);
2521
2522 /* av_log API */
2523
2524 #include <stdarg.h>
2525
2526 #define AV_LOG_QUIET -1
2527 #define AV_LOG_ERROR 0
2528 #define AV_LOG_INFO 1
2529 #define AV_LOG_DEBUG 2
2530
2531 #ifdef __GNUC__
2532 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2533 #else
2534 extern void av_log(void*, int level, const char *fmt, ...);
2535 #endif
2536
2537 extern void av_vlog(void*, int level, const char *fmt, va_list);
2538 extern int av_log_get_level(void);
2539 extern void av_log_set_level(int);
2540 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2541
2542 /* endian macros */
2543 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2544 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2545 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2546 (((uint8_t*)(x))[1] << 16) | \
2547 (((uint8_t*)(x))[2] << 8) | \
2548 ((uint8_t*)(x))[3])
2549 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2550 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2551 (((uint8_t*)(x))[2] << 16) | \
2552 (((uint8_t*)(x))[1] << 8) | \
2553 ((uint8_t*)(x))[0])
2554 #endif
2555
2556 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2557
2558 #ifdef __cplusplus
2559 }
2560 #endif
2561
2562 #endif /* AVCODEC_H */