ab00920bc1b1b731d5903d2a8049283a97950ad0
[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 ((49<<16)+(0<<8)+2)
25 #define LIBAVCODEC_VERSION 49.0.2
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_MPEG4,
48 CODEC_ID_RAWVIDEO,
49 CODEC_ID_MSMPEG4V1,
50 CODEC_ID_MSMPEG4V2,
51 CODEC_ID_MSMPEG4V3,
52 CODEC_ID_WMV1,
53 CODEC_ID_WMV2,
54 CODEC_ID_H263P,
55 CODEC_ID_H263I,
56 CODEC_ID_FLV1,
57 CODEC_ID_SVQ1,
58 CODEC_ID_SVQ3,
59 CODEC_ID_DVVIDEO,
60 CODEC_ID_HUFFYUV,
61 CODEC_ID_CYUV,
62 CODEC_ID_H264,
63 CODEC_ID_INDEO3,
64 CODEC_ID_VP3,
65 CODEC_ID_THEORA,
66 CODEC_ID_ASV1,
67 CODEC_ID_ASV2,
68 CODEC_ID_FFV1,
69 CODEC_ID_4XM,
70 CODEC_ID_VCR1,
71 CODEC_ID_CLJR,
72 CODEC_ID_MDEC,
73 CODEC_ID_ROQ,
74 CODEC_ID_INTERPLAY_VIDEO,
75 CODEC_ID_XAN_WC3,
76 CODEC_ID_XAN_WC4,
77 CODEC_ID_RPZA,
78 CODEC_ID_CINEPAK,
79 CODEC_ID_WS_VQA,
80 CODEC_ID_MSRLE,
81 CODEC_ID_MSVIDEO1,
82 CODEC_ID_IDCIN,
83 CODEC_ID_8BPS,
84 CODEC_ID_SMC,
85 CODEC_ID_FLIC,
86 CODEC_ID_TRUEMOTION1,
87 CODEC_ID_VMDVIDEO,
88 CODEC_ID_MSZH,
89 CODEC_ID_ZLIB,
90 CODEC_ID_QTRLE,
91 CODEC_ID_SNOW,
92 CODEC_ID_TSCC,
93 CODEC_ID_ULTI,
94 CODEC_ID_QDRAW,
95 CODEC_ID_VIXL,
96 CODEC_ID_QPEG,
97 CODEC_ID_XVID,
98 CODEC_ID_PNG,
99 CODEC_ID_PPM,
100 CODEC_ID_PBM,
101 CODEC_ID_PGM,
102 CODEC_ID_PGMYUV,
103 CODEC_ID_PAM,
104 CODEC_ID_FFVHUFF,
105 CODEC_ID_RV30,
106 CODEC_ID_RV40,
107 CODEC_ID_VC9,
108 CODEC_ID_WMV3,
109 CODEC_ID_LOCO,
110 CODEC_ID_WNV1,
111 CODEC_ID_AASC,
112 CODEC_ID_INDEO2,
113 CODEC_ID_FRAPS,
114
115 /* various pcm "codecs" */
116 CODEC_ID_PCM_S16LE= 0x10000,
117 CODEC_ID_PCM_S16BE,
118 CODEC_ID_PCM_U16LE,
119 CODEC_ID_PCM_U16BE,
120 CODEC_ID_PCM_S8,
121 CODEC_ID_PCM_U8,
122 CODEC_ID_PCM_MULAW,
123 CODEC_ID_PCM_ALAW,
124
125 /* various adpcm codecs */
126 CODEC_ID_ADPCM_IMA_QT= 0x11000,
127 CODEC_ID_ADPCM_IMA_WAV,
128 CODEC_ID_ADPCM_IMA_DK3,
129 CODEC_ID_ADPCM_IMA_DK4,
130 CODEC_ID_ADPCM_IMA_WS,
131 CODEC_ID_ADPCM_IMA_SMJPEG,
132 CODEC_ID_ADPCM_MS,
133 CODEC_ID_ADPCM_4XM,
134 CODEC_ID_ADPCM_XA,
135 CODEC_ID_ADPCM_ADX,
136 CODEC_ID_ADPCM_EA,
137 CODEC_ID_ADPCM_G726,
138 CODEC_ID_ADPCM_CT,
139 CODEC_ID_ADPCM_SWF,
140 CODEC_ID_ADPCM_YAMAHA,
141
142 /* AMR */
143 CODEC_ID_AMR_NB= 0x12000,
144 CODEC_ID_AMR_WB,
145
146 /* RealAudio codecs*/
147 CODEC_ID_RA_144= 0x13000,
148 CODEC_ID_RA_288,
149
150 /* various DPCM codecs */
151 CODEC_ID_ROQ_DPCM= 0x14000,
152 CODEC_ID_INTERPLAY_DPCM,
153 CODEC_ID_XAN_DPCM,
154 CODEC_ID_SOL_DPCM,
155
156 CODEC_ID_MP2= 0x15000,
157 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
158 CODEC_ID_AAC,
159 CODEC_ID_MPEG4AAC,
160 CODEC_ID_AC3,
161 CODEC_ID_DTS,
162 CODEC_ID_VORBIS,
163 CODEC_ID_DVAUDIO,
164 CODEC_ID_WMAV1,
165 CODEC_ID_WMAV2,
166 CODEC_ID_MACE3,
167 CODEC_ID_MACE6,
168 CODEC_ID_VMDAUDIO,
169 CODEC_ID_SONIC,
170 CODEC_ID_SONIC_LS,
171 CODEC_ID_FLAC,
172 CODEC_ID_MP3ADU,
173 CODEC_ID_MP3ON4,
174 CODEC_ID_SHORTEN,
175 CODEC_ID_ALAC,
176 CODEC_ID_WESTWOOD_SND1,
177 CODEC_ID_GSM,
178
179 CODEC_ID_OGGTHEORA= 0x16000,
180
181 /* subtitle codecs */
182 CODEC_ID_DVD_SUBTITLE= 0x17000,
183 CODEC_ID_DVB_SUBTITLE,
184
185 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
186 stream (only used by libavformat) */
187 };
188
189 /* CODEC_ID_MP3LAME is absolete */
190 #define CODEC_ID_MP3LAME CODEC_ID_MP3
191
192 enum CodecType {
193 CODEC_TYPE_UNKNOWN = -1,
194 CODEC_TYPE_VIDEO,
195 CODEC_TYPE_AUDIO,
196 CODEC_TYPE_DATA,
197 CODEC_TYPE_SUBTITLE,
198 };
199
200 /**
201 * Pixel format. Notes:
202 *
203 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
204 * color is put together as:
205 * (A << 24) | (R << 16) | (G << 8) | B
206 * This is stored as BGRA on little endian CPU architectures and ARGB on
207 * big endian CPUs.
208 *
209 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
210 * image data is stored in AVFrame.data[0]. The palette is transported in
211 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
212 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
213 * also endian-specific). Note also that the individual RGB palette
214 * components stored in AVFrame.data[1] should be in the range 0..255.
215 * This is important as many custom PAL8 video codecs that were designed
216 * to run on the IBM VGA graphics adapter use 6-bit palette components.
217 */
218 enum PixelFormat {
219 PIX_FMT_NONE= -1,
220 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
221 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
222 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
223 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
224 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
225 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
226 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
227 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
228 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
229 PIX_FMT_RGB565, ///< always stored in cpu endianness
230 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
231 PIX_FMT_GRAY8,
232 PIX_FMT_MONOWHITE, ///< 0 is white
233 PIX_FMT_MONOBLACK, ///< 0 is black
234 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
235 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
236 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
237 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
238 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
239 PIX_FMT_XVMC_MPEG2_IDCT,
240 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
241 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
242 PIX_FMT_NB,
243 };
244
245 /* currently unused, may be used if 24/32 bits samples ever supported */
246 enum SampleFormat {
247 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
248 SAMPLE_FMT_S32, ///< signed 32 bits
249 SAMPLE_FMT_FLT, ///< float
250 SAMPLE_FMT_DBL, ///< double
251 };
252
253 /* in bytes */
254 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
255
256 /**
257 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
258 * this is mainly needed because some optimized bitstream readers read
259 * 32 or 64 bit at once and could read over the end<br>
260 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
261 * MPEG bitstreams could cause overread and segfault
262 */
263 #define FF_INPUT_BUFFER_PADDING_SIZE 8
264
265 /**
266 * minimum encoding buffer size.
267 * used to avoid some checks during header writing
268 */
269 #define FF_MIN_BUFFER_SIZE 16384
270
271 /* motion estimation type, EPZS by default */
272 enum Motion_Est_ID {
273 ME_ZERO = 1,
274 ME_FULL,
275 ME_LOG,
276 ME_PHODS,
277 ME_EPZS,
278 ME_X1
279 };
280
281 enum AVDiscard{
282 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
283 AVDISCARD_NONE =-16, ///< discard nothing
284 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
285 AVDISCARD_NONREF = 8, ///< discard all non reference
286 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
287 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
288 AVDISCARD_ALL = 48, ///< discard all
289 };
290
291 typedef struct RcOverride{
292 int start_frame;
293 int end_frame;
294 int qscale; // if this is 0 then quality_factor will be used instead
295 float quality_factor;
296 } RcOverride;
297
298 /* only for ME compatiblity with old apps */
299 extern int motion_estimation_method;
300
301 #define FF_MAX_B_FRAMES 8
302
303 /* encoding support
304 these flags can be passed in AVCodecContext.flags before initing
305 Note: not everything is supported yet.
306 */
307
308 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
309 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
310 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
311 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
312 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
313 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
314 /* parent program gurantees that the input for b-frame containing streams is not written to
315 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
316 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
317 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
318 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
319 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
320 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
321 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
322 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
323 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
324 of only at frame boundaries */
325 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
326 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
327 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
328 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
329 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
330 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
331 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
332 /* Fx : Flag for h263+ extra options */
333 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
334 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
335 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
336 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
337 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
338 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
339 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
340 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
341 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
342 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
343 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
344 #define CODEC_FLAG_CLOSED_GOP 0x80000000
345 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
346 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
347 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
348 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
349
350 /* Unsupported options :
351 * Syntax Arithmetic coding (SAC)
352 * Reference Picture Selection
353 * Independant Segment Decoding */
354 /* /Fx */
355 /* codec capabilities */
356
357 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
358 /**
359 * Codec uses get_buffer() for allocating buffers.
360 * direct rendering method 1
361 */
362 #define CODEC_CAP_DR1 0x0002
363 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
364 used */
365 #define CODEC_CAP_PARSE_ONLY 0x0004
366 #define CODEC_CAP_TRUNCATED 0x0008
367 /* codec can export data for HW decoding (XvMC) */
368 #define CODEC_CAP_HWACCEL 0x0010
369 /**
370 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
371 * if this is not set, the codec is guranteed to never be feeded with NULL data
372 */
373 #define CODEC_CAP_DELAY 0x0020
374
375 //the following defines may change, don't expect compatibility if you use them
376 #define MB_TYPE_INTRA4x4 0x0001
377 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
378 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
379 #define MB_TYPE_16x16 0x0008
380 #define MB_TYPE_16x8 0x0010
381 #define MB_TYPE_8x16 0x0020
382 #define MB_TYPE_8x8 0x0040
383 #define MB_TYPE_INTERLACED 0x0080
384 #define MB_TYPE_DIRECT2 0x0100 //FIXME
385 #define MB_TYPE_ACPRED 0x0200
386 #define MB_TYPE_GMC 0x0400
387 #define MB_TYPE_SKIP 0x0800
388 #define MB_TYPE_P0L0 0x1000
389 #define MB_TYPE_P1L0 0x2000
390 #define MB_TYPE_P0L1 0x4000
391 #define MB_TYPE_P1L1 0x8000
392 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
393 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
394 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
395 #define MB_TYPE_QUANT 0x00010000
396 #define MB_TYPE_CBP 0x00020000
397 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
398
399 /**
400 * Pan Scan area.
401 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
402 */
403 typedef struct AVPanScan{
404 /**
405 * id.
406 * - encoding: set by user.
407 * - decoding: set by lavc
408 */
409 int id;
410
411 /**
412 * width and height in 1/16 pel
413 * - encoding: set by user.
414 * - decoding: set by lavc
415 */
416 int width;
417 int height;
418
419 /**
420 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
421 * - encoding: set by user.
422 * - decoding: set by lavc
423 */
424 int16_t position[3][2];
425 }AVPanScan;
426
427 #define FF_COMMON_FRAME \
428 /**\
429 * pointer to the picture planes.\
430 * this might be different from the first allocated byte\
431 * - encoding: \
432 * - decoding: \
433 */\
434 uint8_t *data[4];\
435 int linesize[4];\
436 /**\
437 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
438 * this isn't used by lavc unless the default get/release_buffer() is used\
439 * - encoding: \
440 * - decoding: \
441 */\
442 uint8_t *base[4];\
443 /**\
444 * 1 -> keyframe, 0-> not\
445 * - encoding: set by lavc\
446 * - decoding: set by lavc\
447 */\
448 int key_frame;\
449 \
450 /**\
451 * picture type of the frame, see ?_TYPE below.\
452 * - encoding: set by lavc for coded_picture (and set by user for input)\
453 * - decoding: set by lavc\
454 */\
455 int pict_type;\
456 \
457 /**\
458 * presentation timestamp in time_base units (time when frame should be shown to user)\
459 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
460 * - encoding: MUST be set by user\
461 * - decoding: set by lavc\
462 */\
463 int64_t pts;\
464 \
465 /**\
466 * picture number in bitstream order.\
467 * - encoding: set by\
468 * - decoding: set by lavc\
469 */\
470 int coded_picture_number;\
471 /**\
472 * picture number in display order.\
473 * - encoding: set by\
474 * - decoding: set by lavc\
475 */\
476 int display_picture_number;\
477 \
478 /**\
479 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
480 * - encoding: set by lavc for coded_picture (and set by user for input)\
481 * - decoding: set by lavc\
482 */\
483 int quality; \
484 \
485 /**\
486 * buffer age (1->was last buffer and dint change, 2->..., ...).\
487 * set to INT_MAX if the buffer has not been used yet \
488 * - encoding: unused\
489 * - decoding: MUST be set by get_buffer()\
490 */\
491 int age;\
492 \
493 /**\
494 * is this picture used as reference\
495 * - encoding: unused\
496 * - decoding: set by lavc (before get_buffer() call))\
497 */\
498 int reference;\
499 \
500 /**\
501 * QP table\
502 * - encoding: unused\
503 * - decoding: set by lavc\
504 */\
505 int8_t *qscale_table;\
506 /**\
507 * QP store stride\
508 * - encoding: unused\
509 * - decoding: set by lavc\
510 */\
511 int qstride;\
512 \
513 /**\
514 * mbskip_table[mb]>=1 if MB didnt change\
515 * stride= mb_width = (width+15)>>4\
516 * - encoding: unused\
517 * - decoding: set by lavc\
518 */\
519 uint8_t *mbskip_table;\
520 \
521 /**\
522 * Motion vector table.\
523 * @code\
524 * example:\
525 * int mv_sample_log2= 4 - motion_subsample_log2;\
526 * int mb_width= (width+15)>>4;\
527 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
528 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
529 * @endcode\
530 * - encoding: set by user\
531 * - decoding: set by lavc\
532 */\
533 int16_t (*motion_val[2])[2];\
534 \
535 /**\
536 * Macroblock type table\
537 * mb_type_base + mb_width + 2\
538 * - encoding: set by user\
539 * - decoding: set by lavc\
540 */\
541 uint32_t *mb_type;\
542 \
543 /**\
544 * log2 of the size of the block which a single vector in motion_val represents: \
545 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
546 * - encoding: unused\
547 * - decoding: set by lavc\
548 */\
549 uint8_t motion_subsample_log2;\
550 \
551 /**\
552 * for some private data of the user\
553 * - encoding: unused\
554 * - decoding: set by user\
555 */\
556 void *opaque;\
557 \
558 /**\
559 * error\
560 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
561 * - decoding: unused\
562 */\
563 uint64_t error[4];\
564 \
565 /**\
566 * type of the buffer (to keep track of who has to dealloc data[*])\
567 * - encoding: set by the one who allocs it\
568 * - decoding: set by the one who allocs it\
569 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
570 */\
571 int type;\
572 \
573 /**\
574 * when decoding, this signal how much the picture must be delayed.\
575 * extra_delay = repeat_pict / (2*fps)\
576 * - encoding: unused\
577 * - decoding: set by lavc\
578 */\
579 int repeat_pict;\
580 \
581 /**\
582 * \
583 */\
584 int qscale_type;\
585 \
586 /**\
587 * The content of the picture is interlaced.\
588 * - encoding: set by user\
589 * - decoding: set by lavc (default 0)\
590 */\
591 int interlaced_frame;\
592 \
593 /**\
594 * if the content is interlaced, is top field displayed first.\
595 * - encoding: set by user\
596 * - decoding: set by lavc\
597 */\
598 int top_field_first;\
599 \
600 /**\
601 * Pan scan.\
602 * - encoding: set by user\
603 * - decoding: set by lavc\
604 */\
605 AVPanScan *pan_scan;\
606 \
607 /**\
608 * tell user application that palette has changed from previous frame.\
609 * - encoding: ??? (no palette-enabled encoder yet)\
610 * - decoding: set by lavc (default 0)\
611 */\
612 int palette_has_changed;\
613 \
614 /**\
615 * Codec suggestion on buffer type if != 0\
616 * - encoding: unused\
617 * - decoding: set by lavc (before get_buffer() call))\
618 */\
619 int buffer_hints;\
620 \
621 /**\
622 * DCT coeffitients\
623 * - encoding: unused\
624 * - decoding: set by lavc\
625 */\
626 short *dct_coeff;\
627 \
628 /**\
629 * Motion referece frame index\
630 * - encoding: set by user\
631 * - decoding: set by lavc\
632 */\
633 int8_t *ref_index[2];
634
635 #define FF_QSCALE_TYPE_MPEG1 0
636 #define FF_QSCALE_TYPE_MPEG2 1
637
638 #define FF_BUFFER_TYPE_INTERNAL 1
639 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
640 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
641 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
642
643
644 #define FF_I_TYPE 1 // Intra
645 #define FF_P_TYPE 2 // Predicted
646 #define FF_B_TYPE 3 // Bi-dir predicted
647 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
648 #define FF_SI_TYPE 5
649 #define FF_SP_TYPE 6
650
651 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
652 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
653 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
654 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
655
656 /**
657 * Audio Video Frame.
658 */
659 typedef struct AVFrame {
660 FF_COMMON_FRAME
661 } AVFrame;
662
663 #define DEFAULT_FRAME_RATE_BASE 1001000
664
665 /**
666 * Used by av_log
667 */
668 typedef struct AVCLASS AVClass;
669 struct AVCLASS {
670 const char* class_name;
671 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
672 or AVFormatContext, which begin with an AVClass.
673 Needed because av_log is in libavcodec and has no visibility
674 of AVIn/OutputFormat */
675 };
676
677 /**
678 * main external api structure.
679 */
680 typedef struct AVCodecContext {
681 /**
682 * Info on struct for av_log
683 * - set by avcodec_alloc_context
684 */
685 AVClass *av_class;
686 /**
687 * the average bitrate.
688 * - encoding: set by user. unused for constant quantizer encoding
689 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
690 */
691 int bit_rate;
692
693 /**
694 * number of bits the bitstream is allowed to diverge from the reference.
695 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
696 * - encoding: set by user. unused for constant quantizer encoding
697 * - decoding: unused
698 */
699 int bit_rate_tolerance;
700
701 /**
702 * CODEC_FLAG_*.
703 * - encoding: set by user.
704 * - decoding: set by user.
705 */
706 int flags;
707
708 /**
709 * some codecs needs additionnal format info. It is stored here
710 * - encoding: set by user.
711 * - decoding: set by lavc. (FIXME is this ok?)
712 */
713 int sub_id;
714
715 /**
716 * motion estimation algorithm used for video coding.
717 * - encoding: MUST be set by user.
718 * - decoding: unused
719 */
720 int me_method;
721
722 /**
723 * some codecs need / can use extra-data like huffman tables.
724 * mjpeg: huffman tables
725 * rv10: additional flags
726 * mpeg4: global headers (they can be in the bitstream or here)
727 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
728 * then extradata_size to avoid prolems if its read with the bitstream reader
729 * - encoding: set/allocated/freed by lavc.
730 * - decoding: set/allocated/freed by user.
731 */
732 void *extradata;
733 int extradata_size;
734
735 /* video only */
736 /**
737 * time base in which the timestamps are specified.
738 * - encoding: MUST be set by user
739 * - decoding: set by lavc.
740 */
741 AVRational time_base;
742
743 /**
744 * picture width / height.
745 * - encoding: MUST be set by user.
746 * - decoding: set by lavc.
747 * Note, for compatibility its possible to set this instead of
748 * coded_width/height before decoding
749 */
750 int width, height;
751
752 #define FF_ASPECT_EXTENDED 15
753
754 /**
755 * the number of pictures in a group of pitures, or 0 for intra_only.
756 * - encoding: set by user.
757 * - decoding: unused
758 */
759 int gop_size;
760
761 /**
762 * pixel format, see PIX_FMT_xxx.
763 * - encoding: set by user.
764 * - decoding: set by lavc.
765 */
766 enum PixelFormat pix_fmt;
767
768 /**
769 * Frame rate emulation. If not zero lower layer (i.e. format handler)
770 * has to read frames at native frame rate.
771 * - encoding: set by user.
772 * - decoding: unused.
773 */
774 int rate_emu;
775
776 /**
777 * if non NULL, 'draw_horiz_band' is called by the libavcodec
778 * decoder to draw an horizontal band. It improve cache usage. Not
779 * all codecs can do that. You must check the codec capabilities
780 * before
781 * - encoding: unused
782 * - decoding: set by user.
783 * @param height the height of the slice
784 * @param y the y position of the slice
785 * @param type 1->top field, 2->bottom field, 3->frame
786 * @param offset offset into the AVFrame.data from which the slice should be read
787 */
788 void (*draw_horiz_band)(struct AVCodecContext *s,
789 const AVFrame *src, int offset[4],
790 int y, int type, int height);
791
792 /* audio only */
793 int sample_rate; ///< samples per sec
794 int channels;
795
796 /**
797 * audio sample format.
798 * - encoding: set by user.
799 * - decoding: set by lavc.
800 */
801 enum SampleFormat sample_fmt; ///< sample format, currenly unused
802
803 /* the following data should not be initialized */
804 /**
805 * samples per packet. initialized when calling 'init'
806 */
807 int frame_size;
808 int frame_number; ///< audio or video frame number
809 int real_pict_num; ///< returns the real picture number of previous encoded frame
810
811 /**
812 * number of frames the decoded output will be delayed relative to
813 * the encoded input.
814 * - encoding: set by lavc.
815 * - decoding: unused
816 */
817 int delay;
818
819 /* - encoding parameters */
820 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
821 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
822
823 /**
824 * minimum quantizer.
825 * - encoding: set by user.
826 * - decoding: unused
827 */
828 int qmin;
829
830 /**
831 * maximum quantizer.
832 * - encoding: set by user.
833 * - decoding: unused
834 */
835 int qmax;
836
837 /**
838 * maximum quantizer difference etween frames.
839 * - encoding: set by user.
840 * - decoding: unused
841 */
842 int max_qdiff;
843
844 /**
845 * maximum number of b frames between non b frames.
846 * note: the output will be delayed by max_b_frames+1 relative to the input
847 * - encoding: set by user.
848 * - decoding: unused
849 */
850 int max_b_frames;
851
852 /**
853 * qscale factor between ip and b frames.
854 * - encoding: set by user.
855 * - decoding: unused
856 */
857 float b_quant_factor;
858
859 /** obsolete FIXME remove */
860 int rc_strategy;
861 int b_frame_strategy;
862
863 /**
864 * hurry up amount.
865 * deprecated in favor of skip_idct and skip_frame
866 * - encoding: unused
867 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
868 */
869 int hurry_up;
870
871 struct AVCodec *codec;
872
873 void *priv_data;
874
875 /* unused, FIXME remove*/
876 int rtp_mode;
877
878 int rtp_payload_size; /* The size of the RTP payload: the coder will */
879 /* do it's best to deliver a chunk with size */
880 /* below rtp_payload_size, the chunk will start */
881 /* with a start code on some codecs like H.263 */
882 /* This doesn't take account of any particular */
883 /* headers inside the transmited RTP payload */
884
885
886 /* The RTP callback: This function is called */
887 /* every time the encoder has a packet to send */
888 /* Depends on the encoder if the data starts */
889 /* with a Start Code (it should) H.263 does. */
890 /* mb_nb contains the number of macroblocks */
891 /* encoded in the RTP payload */
892 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
893
894 /* statistics, used for 2-pass encoding */
895 int mv_bits;
896 int header_bits;
897 int i_tex_bits;
898 int p_tex_bits;
899 int i_count;
900 int p_count;
901 int skip_count;
902 int misc_bits;
903
904 /**
905 * number of bits used for the previously encoded frame.
906 * - encoding: set by lavc
907 * - decoding: unused
908 */
909 int frame_bits;
910
911 /**
912 * private data of the user, can be used to carry app specific stuff.
913 * - encoding: set by user
914 * - decoding: set by user
915 */
916 void *opaque;
917
918 char codec_name[32];
919 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
920 enum CodecID codec_id; /* see CODEC_ID_xxx */
921
922 /**
923 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
924 * this is used to workaround some encoder bugs
925 * - encoding: set by user, if not then the default based on codec_id will be used
926 * - decoding: set by user, will be converted to upper case by lavc during init
927 */
928 unsigned int codec_tag;
929
930 /**
931 * workaround bugs in encoders which sometimes cannot be detected automatically.
932 * - encoding: set by user
933 * - decoding: set by user
934 */
935 int workaround_bugs;
936 #define FF_BUG_AUTODETECT 1 ///< autodetection
937 #define FF_BUG_OLD_MSMPEG4 2
938 #define FF_BUG_XVID_ILACE 4
939 #define FF_BUG_UMP4 8
940 #define FF_BUG_NO_PADDING 16
941 #define FF_BUG_AMV 32
942 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
943 #define FF_BUG_QPEL_CHROMA 64
944 #define FF_BUG_STD_QPEL 128
945 #define FF_BUG_QPEL_CHROMA2 256
946 #define FF_BUG_DIRECT_BLOCKSIZE 512
947 #define FF_BUG_EDGE 1024
948 #define FF_BUG_HPEL_CHROMA 2048
949 #define FF_BUG_DC_CLIP 4096
950 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
951 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
952
953 /**
954 * luma single coeff elimination threshold.
955 * - encoding: set by user
956 * - decoding: unused
957 */
958 int luma_elim_threshold;
959
960 /**
961 * chroma single coeff elimination threshold.
962 * - encoding: set by user
963 * - decoding: unused
964 */
965 int chroma_elim_threshold;
966
967 /**
968 * strictly follow the std (MPEG4, ...).
969 * - encoding: set by user
970 * - decoding: unused
971 */
972 int strict_std_compliance;
973 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
974 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
975 #define FF_COMPLIANCE_NORMAL 0
976 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
977 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
978
979 /**
980 * qscale offset between ip and b frames.
981 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
982 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
983 * - encoding: set by user.
984 * - decoding: unused
985 */
986 float b_quant_offset;
987
988 /**
989 * error resilience higher values will detect more errors but may missdetect
990 * some more or less valid parts as errors.
991 * - encoding: unused
992 * - decoding: set by user
993 */
994 int error_resilience;
995 #define FF_ER_CAREFULL 1
996 #define FF_ER_COMPLIANT 2
997 #define FF_ER_AGGRESSIVE 3
998 #define FF_ER_VERY_AGGRESSIVE 4
999
1000 /**
1001 * called at the beginning of each frame to get a buffer for it.
1002 * if pic.reference is set then the frame will be read later by lavc
1003 * avcodec_align_dimensions() should be used to find the required width and
1004 * height, as they normally need to be rounded up to the next multiple of 16
1005 * - encoding: unused
1006 * - decoding: set by lavc, user can override
1007 */
1008 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1009
1010 /**
1011 * called to release buffers which where allocated with get_buffer.
1012 * a released buffer can be reused in get_buffer()
1013 * pic.data[*] must be set to NULL
1014 * - encoding: unused
1015 * - decoding: set by lavc, user can override
1016 */
1017 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1018
1019 /**
1020 * if 1 the stream has a 1 frame delay during decoding.
1021 * - encoding: set by lavc
1022 * - decoding: set by lavc
1023 */
1024 int has_b_frames;
1025
1026 /**
1027 * number of bytes per packet if constant and known or 0
1028 * used by some WAV based audio codecs
1029 */
1030 int block_align;
1031
1032 int parse_only; /* - decoding only: if true, only parsing is done
1033 (function avcodec_parse_frame()). The frame
1034 data is returned. Only MPEG codecs support this now. */
1035
1036 /**
1037 * 0-> h263 quant 1-> mpeg quant.
1038 * - encoding: set by user.
1039 * - decoding: unused
1040 */
1041 int mpeg_quant;
1042
1043 /**
1044 * pass1 encoding statistics output buffer.
1045 * - encoding: set by lavc
1046 * - decoding: unused
1047 */
1048 char *stats_out;
1049
1050 /**
1051 * pass2 encoding statistics input buffer.
1052 * concatenated stuff from stats_out of pass1 should be placed here
1053 * - encoding: allocated/set/freed by user
1054 * - decoding: unused
1055 */
1056 char *stats_in;
1057
1058 /**
1059 * ratecontrol qmin qmax limiting method.
1060 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1061 * - encoding: set by user.
1062 * - decoding: unused
1063 */
1064 float rc_qsquish;
1065
1066 float rc_qmod_amp;
1067 int rc_qmod_freq;
1068
1069 /**
1070 * ratecontrol override, see RcOverride.
1071 * - encoding: allocated/set/freed by user.
1072 * - decoding: unused
1073 */
1074 RcOverride *rc_override;
1075 int rc_override_count;
1076
1077 /**
1078 * rate control equation.
1079 * - encoding: set by user
1080 * - decoding: unused
1081 */
1082 char *rc_eq;
1083
1084 /**
1085 * maximum bitrate.
1086 * - encoding: set by user.
1087 * - decoding: unused
1088 */
1089 int rc_max_rate;
1090
1091 /**
1092 * minimum bitrate.
1093 * - encoding: set by user.
1094 * - decoding: unused
1095 */
1096 int rc_min_rate;
1097
1098 /**
1099 * decoder bitstream buffer size.
1100 * - encoding: set by user.
1101 * - decoding: unused
1102 */
1103 int rc_buffer_size;
1104 float rc_buffer_aggressivity;
1105
1106 /**
1107 * qscale factor between p and i frames.
1108 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1109 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1110 * - encoding: set by user.
1111 * - decoding: unused
1112 */
1113 float i_quant_factor;
1114
1115 /**
1116 * qscale offset between p and i frames.
1117 * - encoding: set by user.
1118 * - decoding: unused
1119 */
1120 float i_quant_offset;
1121
1122 /**
1123 * initial complexity for pass1 ratecontrol.
1124 * - encoding: set by user.
1125 * - decoding: unused
1126 */
1127 float rc_initial_cplx;
1128
1129 /**
1130 * dct algorithm, see FF_DCT_* below.
1131 * - encoding: set by user
1132 * - decoding: unused
1133 */
1134 int dct_algo;
1135 #define FF_DCT_AUTO 0
1136 #define FF_DCT_FASTINT 1
1137 #define FF_DCT_INT 2
1138 #define FF_DCT_MMX 3
1139 #define FF_DCT_MLIB 4
1140 #define FF_DCT_ALTIVEC 5
1141 #define FF_DCT_FAAN 6
1142
1143 /**
1144 * luminance masking (0-> disabled).
1145 * - encoding: set by user
1146 * - decoding: unused
1147 */
1148 float lumi_masking;
1149
1150 /**
1151 * temporary complexity masking (0-> disabled).
1152 * - encoding: set by user
1153 * - decoding: unused
1154 */
1155 float temporal_cplx_masking;
1156
1157 /**
1158 * spatial complexity masking (0-> disabled).
1159 * - encoding: set by user
1160 * - decoding: unused
1161 */
1162 float spatial_cplx_masking;
1163
1164 /**
1165 * p block masking (0-> disabled).
1166 * - encoding: set by user
1167 * - decoding: unused
1168 */
1169 float p_masking;
1170
1171 /**
1172 * darkness masking (0-> disabled).
1173 * - encoding: set by user
1174 * - decoding: unused
1175 */
1176 float dark_masking;
1177
1178
1179 /* for binary compatibility */
1180 int unused;
1181
1182 /**
1183 * idct algorithm, see FF_IDCT_* below.
1184 * - encoding: set by user
1185 * - decoding: set by user
1186 */
1187 int idct_algo;
1188 #define FF_IDCT_AUTO 0
1189 #define FF_IDCT_INT 1
1190 #define FF_IDCT_SIMPLE 2
1191 #define FF_IDCT_SIMPLEMMX 3
1192 #define FF_IDCT_LIBMPEG2MMX 4
1193 #define FF_IDCT_PS2 5
1194 #define FF_IDCT_MLIB 6
1195 #define FF_IDCT_ARM 7
1196 #define FF_IDCT_ALTIVEC 8
1197 #define FF_IDCT_SH4 9
1198 #define FF_IDCT_SIMPLEARM 10
1199 #define FF_IDCT_H264 11
1200 #define FF_IDCT_VP3 12
1201 #define FF_IDCT_IPP 13
1202
1203 /**
1204 * slice count.
1205 * - encoding: set by lavc
1206 * - decoding: set by user (or 0)
1207 */
1208 int slice_count;
1209 /**
1210 * slice offsets in the frame in bytes.
1211 * - encoding: set/allocated by lavc
1212 * - decoding: set/allocated by user (or NULL)
1213 */
1214 int *slice_offset;
1215
1216 /**
1217 * error concealment flags.
1218 * - encoding: unused
1219 * - decoding: set by user
1220 */
1221 int error_concealment;
1222 #define FF_EC_GUESS_MVS 1
1223 #define FF_EC_DEBLOCK 2
1224
1225 /**
1226 * dsp_mask could be add used to disable unwanted CPU features
1227 * CPU features (i.e. MMX, SSE. ...)
1228 *
1229 * with FORCE flag you may instead enable given CPU features
1230 * (Dangerous: usable in case of misdetection, improper usage however will
1231 * result into program crash)
1232 */
1233 unsigned dsp_mask;
1234 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1235 /* lower 16 bits - CPU features */
1236 #ifdef HAVE_MMX
1237 #define FF_MM_MMX 0x0001 /* standard MMX */
1238 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1239 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1240 #define FF_MM_SSE 0x0008 /* SSE functions */
1241 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1242 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1243 #endif /* HAVE_MMX */
1244 #ifdef HAVE_IWMMXT
1245 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1246 #endif /* HAVE_IWMMXT */
1247
1248 /**
1249 * bits per sample/pixel from the demuxer (needed for huffyuv).
1250 * - encoding: set by lavc
1251 * - decoding: set by user
1252 */
1253 int bits_per_sample;
1254
1255 /**
1256 * prediction method (needed for huffyuv).
1257 * - encoding: set by user
1258 * - decoding: unused
1259 */
1260 int prediction_method;
1261 #define FF_PRED_LEFT 0
1262 #define FF_PRED_PLANE 1
1263 #define FF_PRED_MEDIAN 2
1264
1265 /**
1266 * sample aspect ratio (0 if unknown).
1267 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1268 * - encoding: set by user.
1269 * - decoding: set by lavc.
1270 */
1271 AVRational sample_aspect_ratio;
1272
1273 /**
1274 * the picture in the bitstream.
1275 * - encoding: set by lavc
1276 * - decoding: set by lavc
1277 */
1278 AVFrame *coded_frame;
1279
1280 /**
1281 * debug.
1282 * - encoding: set by user.
1283 * - decoding: set by user.
1284 */
1285 int debug;
1286 #define FF_DEBUG_PICT_INFO 1
1287 #define FF_DEBUG_RC 2
1288 #define FF_DEBUG_BITSTREAM 4
1289 #define FF_DEBUG_MB_TYPE 8
1290 #define FF_DEBUG_QP 16
1291 #define FF_DEBUG_MV 32
1292 #define FF_DEBUG_DCT_COEFF 0x00000040
1293 #define FF_DEBUG_SKIP 0x00000080
1294 #define FF_DEBUG_STARTCODE 0x00000100
1295 #define FF_DEBUG_PTS 0x00000200
1296 #define FF_DEBUG_ER 0x00000400
1297 #define FF_DEBUG_MMCO 0x00000800
1298 #define FF_DEBUG_BUGS 0x00001000
1299 #define FF_DEBUG_VIS_QP 0x00002000
1300 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1301
1302 /**
1303 * debug.
1304 * - encoding: set by user.
1305 * - decoding: set by user.
1306 */
1307 int debug_mv;
1308 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1309 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1310 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1311
1312 /**
1313 * error.
1314 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1315 * - decoding: unused
1316 */
1317 uint64_t error[4];
1318
1319 /**
1320 * minimum MB quantizer.
1321 * - encoding: unused
1322 * - decoding: unused
1323 */
1324 int mb_qmin;
1325
1326 /**
1327 * maximum MB quantizer.
1328 * - encoding: unused
1329 * - decoding: unused
1330 */
1331 int mb_qmax;
1332
1333 /**
1334 * motion estimation compare function.
1335 * - encoding: set by user.
1336 * - decoding: unused
1337 */
1338 int me_cmp;
1339 /**
1340 * subpixel motion estimation compare function.
1341 * - encoding: set by user.
1342 * - decoding: unused
1343 */
1344 int me_sub_cmp;
1345 /**
1346 * macroblock compare function (not supported yet).
1347 * - encoding: set by user.
1348 * - decoding: unused
1349 */
1350 int mb_cmp;
1351 /**
1352 * interlaced dct compare function
1353 * - encoding: set by user.
1354 * - decoding: unused
1355 */
1356 int ildct_cmp;
1357 #define FF_CMP_SAD 0
1358 #define FF_CMP_SSE 1
1359 #define FF_CMP_SATD 2
1360 #define FF_CMP_DCT 3
1361 #define FF_CMP_PSNR 4
1362 #define FF_CMP_BIT 5
1363 #define FF_CMP_RD 6
1364 #define FF_CMP_ZERO 7
1365 #define FF_CMP_VSAD 8
1366 #define FF_CMP_VSSE 9
1367 #define FF_CMP_NSSE 10
1368 #define FF_CMP_W53 11
1369 #define FF_CMP_W97 12
1370 #define FF_CMP_DCTMAX 13
1371 #define FF_CMP_CHROMA 256
1372
1373 /**
1374 * ME diamond size & shape.
1375 * - encoding: set by user.
1376 * - decoding: unused
1377 */
1378 int dia_size;
1379
1380 /**
1381 * amount of previous MV predictors (2a+1 x 2a+1 square).
1382 * - encoding: set by user.
1383 * - decoding: unused
1384 */
1385 int last_predictor_count;
1386
1387 /**
1388 * pre pass for motion estimation.
1389 * - encoding: set by user.
1390 * - decoding: unused
1391 */
1392 int pre_me;
1393
1394 /**
1395 * motion estimation pre pass compare function.
1396 * - encoding: set by user.
1397 * - decoding: unused
1398 */
1399 int me_pre_cmp;
1400
1401 /**
1402 * ME pre pass diamond size & shape.
1403 * - encoding: set by user.
1404 * - decoding: unused
1405 */
1406 int pre_dia_size;
1407
1408 /**
1409 * subpel ME quality.
1410 * - encoding: set by user.
1411 * - decoding: unused
1412 */
1413 int me_subpel_quality;
1414
1415 /**
1416 * callback to negotiate the pixelFormat.
1417 * @param fmt is the list of formats which are supported by the codec,
1418 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1419 * the first is allways the native one
1420 * @return the choosen format
1421 * - encoding: unused
1422 * - decoding: set by user, if not set then the native format will always be choosen
1423 */
1424 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1425
1426 /**
1427 * DTG active format information (additionnal aspect ratio
1428 * information only used in DVB MPEG2 transport streams). 0 if
1429 * not set.
1430 *
1431 * - encoding: unused.
1432 * - decoding: set by decoder
1433 */
1434 int dtg_active_format;
1435 #define FF_DTG_AFD_SAME 8
1436 #define FF_DTG_AFD_4_3 9
1437 #define FF_DTG_AFD_16_9 10
1438 #define FF_DTG_AFD_14_9 11
1439 #define FF_DTG_AFD_4_3_SP_14_9 13
1440 #define FF_DTG_AFD_16_9_SP_14_9 14
1441 #define FF_DTG_AFD_SP_4_3 15
1442
1443 /**
1444 * Maximum motion estimation search range in subpel units.
1445 * if 0 then no limit
1446 *
1447 * - encoding: set by user.
1448 * - decoding: unused.
1449 */
1450 int me_range;
1451
1452 /**
1453 * intra quantizer bias.
1454 * - encoding: set by user.
1455 * - decoding: unused
1456 */
1457 int intra_quant_bias;
1458 #define FF_DEFAULT_QUANT_BIAS 999999
1459
1460 /**
1461 * inter quantizer bias.
1462 * - encoding: set by user.
1463 * - decoding: unused
1464 */
1465 int inter_quant_bias;
1466
1467 /**
1468 * color table ID.
1469 * - encoding: unused.
1470 * - decoding: which clrtable should be used for 8bit RGB images
1471 * table have to be stored somewhere FIXME
1472 */
1473 int color_table_id;
1474
1475 /**
1476 * internal_buffer count.
1477 * Don't touch, used by lavc default_get_buffer()
1478 */
1479 int internal_buffer_count;
1480
1481 /**
1482 * internal_buffers.
1483 * Don't touch, used by lavc default_get_buffer()
1484 */
1485 void *internal_buffer;
1486
1487 #define FF_LAMBDA_SHIFT 7
1488 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1489 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1490 #define FF_LAMBDA_MAX (256*128-1)
1491
1492 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1493 /**
1494 * global quality for codecs which cannot change it per frame.
1495 * this should be proportional to MPEG1/2/4 qscale.
1496 * - encoding: set by user.
1497 * - decoding: unused
1498 */
1499 int global_quality;
1500
1501 #define FF_CODER_TYPE_VLC 0
1502 #define FF_CODER_TYPE_AC 1
1503 /**
1504 * coder type
1505 * - encoding: set by user.
1506 * - decoding: unused
1507 */
1508 int coder_type;
1509
1510 /**
1511 * context model
1512 * - encoding: set by user.
1513 * - decoding: unused
1514 */
1515 int context_model;
1516
1517 /**
1518 * slice flags
1519 * - encoding: unused
1520 * - decoding: set by user.
1521 */
1522 int slice_flags;
1523 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1524 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1525 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1526
1527 /**
1528 * XVideo Motion Acceleration
1529 * - encoding: forbidden
1530 * - decoding: set by decoder
1531 */
1532 int xvmc_acceleration;
1533
1534 /**
1535 * macroblock decision mode
1536 * - encoding: set by user.
1537 * - decoding: unused
1538 */
1539 int mb_decision;
1540 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1541 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1542 #define FF_MB_DECISION_RD 2 ///< rate distoration
1543
1544 /**
1545 * custom intra quantization matrix
1546 * - encoding: set by user, can be NULL
1547 * - decoding: set by lavc
1548 */
1549 uint16_t *intra_matrix;
1550
1551 /**
1552 * custom inter quantization matrix
1553 * - encoding: set by user, can be NULL
1554 * - decoding: set by lavc
1555 */
1556 uint16_t *inter_matrix;
1557
1558 /**
1559 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1560 * this is used to workaround some encoder bugs
1561 * - encoding: unused
1562 * - decoding: set by user, will be converted to upper case by lavc during init
1563 */
1564 unsigned int stream_codec_tag;
1565
1566 /**
1567 * scene change detection threshold.
1568 * 0 is default, larger means fewer detected scene changes
1569 * - encoding: set by user.
1570 * - decoding: unused
1571 */
1572 int scenechange_threshold;
1573
1574 /**
1575 * minimum lagrange multipler
1576 * - encoding: set by user.
1577 * - decoding: unused
1578 */
1579 int lmin;
1580
1581 /**
1582 * maximum lagrange multipler
1583 * - encoding: set by user.
1584 * - decoding: unused
1585 */
1586 int lmax;
1587
1588 /**
1589 * Palette control structure
1590 * - encoding: ??? (no palette-enabled encoder yet)
1591 * - decoding: set by user.
1592 */
1593 struct AVPaletteControl *palctrl;
1594
1595 /**
1596 * noise reduction strength
1597 * - encoding: set by user.
1598 * - decoding: unused
1599 */
1600 int noise_reduction;
1601
1602 /**
1603 * called at the beginning of a frame to get cr buffer for it.
1604 * buffer type (size, hints) must be the same. lavc won't check it.
1605 * lavc will pass previous buffer in pic, function should return
1606 * same buffer or new buffer with old frame "painted" into it.
1607 * if pic.data[0] == NULL must behave like get_buffer().
1608 * - encoding: unused
1609 * - decoding: set by lavc, user can override
1610 */
1611 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1612
1613 /**
1614 * number of bits which should be loaded into the rc buffer before decoding starts
1615 * - encoding: set by user.
1616 * - decoding: unused
1617 */
1618 int rc_initial_buffer_occupancy;
1619
1620 /**
1621 *
1622 * - encoding: set by user.
1623 * - decoding: unused
1624 */
1625 int inter_threshold;
1626
1627 /**
1628 * CODEC_FLAG2_*.
1629 * - encoding: set by user.
1630 * - decoding: set by user.
1631 */
1632 int flags2;
1633
1634 /**
1635 * simulates errors in the bitstream to test error concealment.
1636 * - encoding: set by user.
1637 * - decoding: unused.
1638 */
1639 int error_rate;
1640
1641 /**
1642 * MP3 antialias algorithm, see FF_AA_* below.
1643 * - encoding: unused
1644 * - decoding: set by user
1645 */
1646 int antialias_algo;
1647 #define FF_AA_AUTO 0
1648 #define FF_AA_FASTINT 1 //not implemented yet
1649 #define FF_AA_INT 2
1650 #define FF_AA_FLOAT 3
1651 /**
1652 * Quantizer noise shaping.
1653 * - encoding: set by user
1654 * - decoding: unused
1655 */
1656 int quantizer_noise_shaping;
1657
1658 /**
1659 * Thread count.
1660 * is used to decide how many independant tasks should be passed to execute()
1661 * - encoding: set by user
1662 * - decoding: set by user
1663 */
1664 int thread_count;
1665
1666 /**
1667 * the codec may call this to execute several independant things. it will return only after
1668 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1669 * default implementation will execute the parts serially
1670 * @param count the number of things to execute
1671 * - encoding: set by lavc, user can override
1672 * - decoding: set by lavc, user can override
1673 */
1674 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1675
1676 /**
1677 * Thread opaque.
1678 * can be used by execute() to store some per AVCodecContext stuff.
1679 * - encoding: set by execute()
1680 * - decoding: set by execute()
1681 */
1682 void *thread_opaque;
1683
1684 /**
1685 * Motion estimation threshold. under which no motion estimation is
1686 * performed, but instead the user specified motion vectors are used
1687 *
1688 * - encoding: set by user
1689 * - decoding: unused
1690 */
1691 int me_threshold;
1692
1693 /**
1694 * Macroblock threshold. under which the user specified macroblock types will be used
1695 * - encoding: set by user
1696 * - decoding: unused
1697 */
1698 int mb_threshold;
1699
1700 /**
1701 * precision of the intra dc coefficient - 8.
1702 * - encoding: set by user
1703 * - decoding: unused
1704 */
1705 int intra_dc_precision;
1706
1707 /**
1708 * noise vs. sse weight for the nsse comparsion function.
1709 * - encoding: set by user
1710 * - decoding: unused
1711 */
1712 int nsse_weight;
1713
1714 /**
1715 * number of macroblock rows at the top which are skipped.
1716 * - encoding: unused
1717 * - decoding: set by user
1718 */
1719 int skip_top;
1720
1721 /**
1722 * number of macroblock rows at the bottom which are skipped.
1723 * - encoding: unused
1724 * - decoding: set by user
1725 */
1726 int skip_bottom;
1727
1728 /**
1729 * profile
1730 * - encoding: set by user
1731 * - decoding: set by lavc
1732 */
1733 int profile;
1734 #define FF_PROFILE_UNKNOWN -99
1735
1736 /**
1737 * level
1738 * - encoding: set by user
1739 * - decoding: set by lavc
1740 */
1741 int level;
1742 #define FF_LEVEL_UNKNOWN -99
1743
1744 /**
1745 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1746 * - encoding: unused
1747 * - decoding: set by user
1748 */
1749 int lowres;
1750
1751 /**
1752 * bitsream width / height. may be different from width/height if lowres
1753 * or other things are used
1754 * - encoding: unused
1755 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1756 */
1757 int coded_width, coded_height;
1758
1759 /**
1760 * frame skip threshold
1761 * - encoding: set by user
1762 * - decoding: unused
1763 */
1764 int frame_skip_threshold;
1765
1766 /**
1767 * frame skip factor
1768 * - encoding: set by user
1769 * - decoding: unused
1770 */
1771 int frame_skip_factor;
1772
1773 /**
1774 * frame skip exponent
1775 * - encoding: set by user
1776 * - decoding: unused
1777 */
1778 int frame_skip_exp;
1779
1780 /**
1781 * frame skip comparission function
1782 * - encoding: set by user.
1783 * - decoding: unused
1784 */
1785 int frame_skip_cmp;
1786
1787 /**
1788 * border processing masking. raises the quantizer for mbs on the borders
1789 * of the picture.
1790 * - encoding: set by user
1791 * - decoding: unused
1792 */
1793 float border_masking;
1794
1795 /**
1796 * minimum MB lagrange multipler.
1797 * - encoding: set by user.
1798 * - decoding: unused
1799 */
1800 int mb_lmin;
1801
1802 /**
1803 * maximum MB lagrange multipler.
1804 * - encoding: set by user.
1805 * - decoding: unused
1806 */
1807 int mb_lmax;
1808
1809 /**
1810 *
1811 * - encoding: set by user.
1812 * - decoding: unused
1813 */
1814 int me_penalty_compensation;
1815
1816 /**
1817 *
1818 * - encoding: unused
1819 * - decoding: set by user.
1820 */
1821 enum AVDiscard skip_loop_filter;
1822
1823 /**
1824 *
1825 * - encoding: unused
1826 * - decoding: set by user.
1827 */
1828 enum AVDiscard skip_idct;
1829
1830 /**
1831 *
1832 * - encoding: unused
1833 * - decoding: set by user.
1834 */
1835 enum AVDiscard skip_frame;
1836 } AVCodecContext;
1837
1838
1839 /**
1840 * AVOption.
1841 */
1842 typedef struct AVOption {
1843 /** options' name */
1844 const char *name; /* if name is NULL, it indicates a link to next */
1845 /** short English text help or const struct AVOption* subpointer */
1846 const char *help; // const struct AVOption* sub;
1847 /** offset to context structure where the parsed value should be stored */
1848 int offset;
1849 /** options' type */
1850 int type;
1851 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1852 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1853 #define FF_OPT_TYPE_INT 3 ///< integer
1854 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1855 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1856 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1857 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1858 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1859 /** min value (min == max -> no limits) */
1860 double min;
1861 /** maximum value for double/int */
1862 double max;
1863 /** default boo [0,1]l/double/int value */
1864 double defval;
1865 /**
1866 * default string value (with optional semicolon delimited extra option-list
1867 * i.e. option1;option2;option3
1868 * defval might select other then first argument as default
1869 */
1870 const char *defstr;
1871 #define FF_OPT_MAX_DEPTH 10
1872 } AVOption;
1873
1874 /**
1875 * AVCodec.
1876 */
1877 typedef struct AVCodec {
1878 const char *name;
1879 enum CodecType type;
1880 enum CodecID id;
1881 int priv_data_size;
1882 int (*init)(AVCodecContext *);
1883 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1884 int (*close)(AVCodecContext *);
1885 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1886 uint8_t *buf, int buf_size);
1887 int capabilities;
1888 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
1889 void *dummy; // FIXME remove next time we break binary compatibility
1890 #endif
1891 struct AVCodec *next;
1892 void (*flush)(AVCodecContext *);
1893 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1894 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1895 } AVCodec;
1896
1897 /**
1898 * four components are given, that's all.
1899 * the last component is alpha
1900 */
1901 typedef struct AVPicture {
1902 uint8_t *data[4];
1903 int linesize[4]; ///< number of bytes per line
1904 } AVPicture;
1905
1906 /**
1907 * AVPaletteControl
1908 * This structure defines a method for communicating palette changes
1909 * between and demuxer and a decoder.
1910 */
1911 #define AVPALETTE_SIZE 1024
1912 #define AVPALETTE_COUNT 256
1913 typedef struct AVPaletteControl {
1914
1915 /* demuxer sets this to 1 to indicate the palette has changed;
1916 * decoder resets to 0 */
1917 int palette_changed;
1918
1919 /* 4-byte ARGB palette entries, stored in native byte order; note that
1920 * the individual palette components should be on a 8-bit scale; if
1921 * the palette data comes from a IBM VGA native format, the component
1922 * data is probably 6 bits in size and needs to be scaled */
1923 unsigned int palette[AVPALETTE_COUNT];
1924
1925 } AVPaletteControl;
1926
1927 typedef struct AVSubtitleRect {
1928 uint16_t x;
1929 uint16_t y;
1930 uint16_t w;
1931 uint16_t h;
1932 uint16_t nb_colors;
1933 int linesize;
1934 uint32_t *rgba_palette;
1935 uint8_t *bitmap;
1936 } AVSubtitleRect;
1937
1938 typedef struct AVSubtitle {
1939 uint16_t format; /* 0 = graphics */
1940 uint32_t start_display_time; /* relative to packet pts, in ms */
1941 uint32_t end_display_time; /* relative to packet pts, in ms */
1942 uint32_t num_rects;
1943 AVSubtitleRect *rects;
1944 } AVSubtitle;
1945
1946 extern AVCodec ac3_encoder;
1947 extern AVCodec mp2_encoder;
1948 extern AVCodec mp3lame_encoder;
1949 extern AVCodec oggvorbis_encoder;
1950 extern AVCodec oggtheora_encoder;
1951 extern AVCodec faac_encoder;
1952 extern AVCodec xvid_encoder;
1953 extern AVCodec mpeg1video_encoder;
1954 extern AVCodec mpeg2video_encoder;
1955 extern AVCodec h261_encoder;
1956 extern AVCodec h263_encoder;
1957 extern AVCodec h263p_encoder;
1958 extern AVCodec flv_encoder;
1959 extern AVCodec rv10_encoder;
1960 extern AVCodec rv20_encoder;
1961 extern AVCodec dvvideo_encoder;
1962 extern AVCodec mjpeg_encoder;
1963 extern AVCodec ljpeg_encoder;
1964 extern AVCodec png_encoder;
1965 extern AVCodec ppm_encoder;
1966 extern AVCodec pgm_encoder;
1967 extern AVCodec pgmyuv_encoder;
1968 extern AVCodec pbm_encoder;
1969 extern AVCodec pam_encoder;
1970 extern AVCodec mpeg4_encoder;
1971 extern AVCodec msmpeg4v1_encoder;
1972 extern AVCodec msmpeg4v2_encoder;
1973 extern AVCodec msmpeg4v3_encoder;
1974 extern AVCodec wmv1_encoder;
1975 extern AVCodec wmv2_encoder;
1976 extern AVCodec huffyuv_encoder;
1977 extern AVCodec ffvhuff_encoder;
1978 extern AVCodec h264_encoder;
1979 extern AVCodec asv1_encoder;
1980 extern AVCodec asv2_encoder;
1981 extern AVCodec vcr1_encoder;
1982 extern AVCodec ffv1_encoder;
1983 extern AVCodec snow_encoder;
1984 extern AVCodec mdec_encoder;
1985 extern AVCodec zlib_encoder;
1986 extern AVCodec sonic_encoder;
1987 extern AVCodec sonic_ls_encoder;
1988 extern AVCodec svq1_encoder;
1989 extern AVCodec x264_encoder;
1990
1991 extern AVCodec h263_decoder;
1992 extern AVCodec h261_decoder;
1993 extern AVCodec mpeg4_decoder;
1994 extern AVCodec msmpeg4v1_decoder;
1995 extern AVCodec msmpeg4v2_decoder;
1996 extern AVCodec msmpeg4v3_decoder;
1997 extern AVCodec wmv1_decoder;
1998 extern AVCodec wmv2_decoder;
1999 extern AVCodec vc9_decoder;
2000 extern AVCodec wmv3_decoder;
2001 extern AVCodec mpeg1video_decoder;
2002 extern AVCodec mpeg2video_decoder;
2003 extern AVCodec mpegvideo_decoder;
2004 extern AVCodec mpeg_xvmc_decoder;
2005 extern AVCodec h263i_decoder;
2006 extern AVCodec flv_decoder;
2007 extern AVCodec rv10_decoder;
2008 extern AVCodec rv20_decoder;
2009 extern AVCodec rv30_decoder;
2010 extern AVCodec rv40_decoder;
2011 extern AVCodec svq1_decoder;
2012 extern AVCodec svq3_decoder;
2013 extern AVCodec dvvideo_decoder;
2014 extern AVCodec wmav1_decoder;
2015 extern AVCodec wmav2_decoder;
2016 extern AVCodec mjpeg_decoder;
2017 extern AVCodec mjpegb_decoder;
2018 extern AVCodec sp5x_decoder;
2019 extern AVCodec png_decoder;
2020 extern AVCodec mp2_decoder;
2021 extern AVCodec mp3_decoder;
2022 extern AVCodec mp3adu_decoder;
2023 extern AVCodec mp3on4_decoder;
2024 extern AVCodec mace3_decoder;
2025 extern AVCodec mace6_decoder;
2026 extern AVCodec huffyuv_decoder;
2027 extern AVCodec ffvhuff_decoder;
2028 extern AVCodec oggvorbis_decoder;
2029 extern AVCodec oggtheora_decoder;
2030 extern AVCodec cyuv_decoder;
2031 extern AVCodec h264_decoder;
2032 extern AVCodec indeo3_decoder;
2033 extern AVCodec vp3_decoder;
2034 extern AVCodec theora_decoder;
2035 extern AVCodec amr_nb_decoder;
2036 extern AVCodec amr_nb_encoder;
2037 extern AVCodec amr_wb_encoder;
2038 extern AVCodec amr_wb_decoder;
2039 extern AVCodec aac_decoder;
2040 extern AVCodec mpeg4aac_decoder;
2041 extern AVCodec asv1_decoder;
2042 extern AVCodec asv2_decoder;
2043 extern AVCodec vcr1_decoder;
2044 extern AVCodec cljr_decoder;
2045 extern AVCodec ffv1_decoder;
2046 extern AVCodec snow_decoder;
2047 extern AVCodec fourxm_decoder;
2048 extern AVCodec mdec_decoder;
2049 extern AVCodec roq_decoder;
2050 extern AVCodec interplay_video_decoder;
2051 extern AVCodec xan_wc3_decoder;
2052 extern AVCodec rpza_decoder;
2053 extern AVCodec cinepak_decoder;
2054 extern AVCodec msrle_decoder;
2055 extern AVCodec msvideo1_decoder;
2056 extern AVCodec vqa_decoder;
2057 extern AVCodec idcin_decoder;
2058 extern AVCodec eightbps_decoder;
2059 extern AVCodec smc_decoder;
2060 extern AVCodec flic_decoder;
2061 extern AVCodec vmdvideo_decoder;
2062 extern AVCodec vmdaudio_decoder;
2063 extern AVCodec truemotion1_decoder;
2064 extern AVCodec mszh_decoder;
2065 extern AVCodec zlib_decoder;
2066 extern AVCodec ra_144_decoder;
2067 extern AVCodec ra_288_decoder;
2068 extern AVCodec roq_dpcm_decoder;
2069 extern AVCodec interplay_dpcm_decoder;
2070 extern AVCodec xan_dpcm_decoder;
2071 extern AVCodec sol_dpcm_decoder;
2072 extern AVCodec sonic_decoder;
2073 extern AVCodec qtrle_decoder;
2074 extern AVCodec flac_decoder;
2075 extern AVCodec tscc_decoder;
2076 extern AVCodec ulti_decoder;
2077 extern AVCodec qdraw_decoder;
2078 extern AVCodec xl_decoder;
2079 extern AVCodec qpeg_decoder;
2080 extern AVCodec shorten_decoder;
2081 extern AVCodec loco_decoder;
2082 extern AVCodec wnv1_decoder;
2083 extern AVCodec aasc_decoder;
2084 extern AVCodec alac_decoder;
2085 extern AVCodec ws_snd1_decoder;
2086 extern AVCodec indeo2_decoder;
2087 extern AVCodec vorbis_decoder;
2088 extern AVCodec fraps_decoder;
2089 extern AVCodec libgsm_encoder;
2090 extern AVCodec libgsm_decoder;
2091
2092 /* pcm codecs */
2093 #define PCM_CODEC(id, name) \
2094 extern AVCodec name ## _decoder; \
2095 extern AVCodec name ## _encoder
2096
2097 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2098 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2099 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2100 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2101 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2102 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2103 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2104 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2105
2106 /* adpcm codecs */
2107
2108 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2109 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2110 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2111 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2112 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2113 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2114 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2115 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2116 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2117 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2118 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2119 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2120 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2121 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2122 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2123
2124 #undef PCM_CODEC
2125
2126 /* dummy raw video codec */
2127 extern AVCodec rawvideo_encoder;
2128 extern AVCodec rawvideo_decoder;
2129
2130 /* the following codecs use external GPL libs */
2131 extern AVCodec ac3_decoder;
2132 extern AVCodec dts_decoder;
2133
2134 /* subtitles */
2135 extern AVCodec dvdsub_decoder;
2136 extern AVCodec dvbsub_encoder;
2137 extern AVCodec dvbsub_decoder;
2138
2139 /* resample.c */
2140
2141 struct ReSampleContext;
2142 struct AVResampleContext;
2143
2144 typedef struct ReSampleContext ReSampleContext;
2145
2146 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2147 int output_rate, int input_rate);
2148 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2149 void audio_resample_close(ReSampleContext *s);
2150
2151 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2152 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2153 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2154 void av_resample_close(struct AVResampleContext *c);
2155
2156 /* YUV420 format is assumed ! */
2157
2158 struct ImgReSampleContext;
2159
2160 typedef struct ImgReSampleContext ImgReSampleContext;
2161
2162 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2163 int input_width, int input_height);
2164
2165 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2166 int iwidth, int iheight,
2167 int topBand, int bottomBand,
2168 int leftBand, int rightBand,
2169 int padtop, int padbottom,
2170 int padleft, int padright);
2171
2172
2173 void img_resample(ImgReSampleContext *s,
2174 AVPicture *output, const AVPicture *input);
2175
2176 void img_resample_close(ImgReSampleContext *s);
2177
2178 /**
2179 * Allocate memory for a picture. Call avpicture_free to free it.
2180 *
2181 * @param picture the picture to be filled in.
2182 * @param pix_fmt the format of the picture.
2183 * @param width the width of the picture.
2184 * @param height the height of the picture.
2185 * @return 0 if successful, -1 if not.
2186 */
2187 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2188
2189 /* Free a picture previously allocated by avpicture_alloc. */
2190 void avpicture_free(AVPicture *picture);
2191
2192 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2193 int pix_fmt, int width, int height);
2194 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2195 unsigned char *dest, int dest_size);
2196 int avpicture_get_size(int pix_fmt, int width, int height);
2197 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2198 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2199 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2200 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2201 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2202
2203 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2204 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2205 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2206 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2207 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2208 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2209
2210 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2211 int has_alpha);
2212 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2213 int has_alpha, int *loss_ptr);
2214
2215 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2216 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2217 int img_get_alpha_info(const AVPicture *src,
2218 int pix_fmt, int width, int height);
2219
2220 /* convert among pixel formats */
2221 int img_convert(AVPicture *dst, int dst_pix_fmt,
2222 const AVPicture *src, int pix_fmt,
2223 int width, int height);
2224
2225 /* deinterlace a picture */
2226 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2227 int pix_fmt, int width, int height);
2228
2229 /* external high level API */
2230
2231 extern AVCodec *first_avcodec;
2232
2233 /* returns LIBAVCODEC_VERSION_INT constant */
2234 unsigned avcodec_version(void);
2235 /* returns LIBAVCODEC_BUILD constant */
2236 unsigned avcodec_build(void);
2237 void avcodec_init(void);
2238
2239 void register_avcodec(AVCodec *format);
2240 AVCodec *avcodec_find_encoder(enum CodecID id);
2241 AVCodec *avcodec_find_encoder_by_name(const char *name);
2242 AVCodec *avcodec_find_decoder(enum CodecID id);
2243 AVCodec *avcodec_find_decoder_by_name(const char *name);
2244 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2245
2246 void avcodec_get_context_defaults(AVCodecContext *s);
2247 AVCodecContext *avcodec_alloc_context(void);
2248 void avcodec_get_frame_defaults(AVFrame *pic);
2249 AVFrame *avcodec_alloc_frame(void);
2250
2251 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2252 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2253 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2254 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2255 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2256 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2257
2258 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2259 void avcodec_thread_free(AVCodecContext *s);
2260 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2261 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2262 //FIXME func typedef
2263
2264 /**
2265 * opens / inits the AVCodecContext.
2266 * not thread save!
2267 */
2268 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2269
2270 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2271 int *frame_size_ptr,
2272 uint8_t *buf, int buf_size);
2273 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2274 int *got_picture_ptr,
2275 uint8_t *buf, int buf_size);
2276 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2277 int *got_sub_ptr,
2278 const uint8_t *buf, int buf_size);
2279 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2280 int *data_size_ptr,
2281 uint8_t *buf, int buf_size);
2282 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2283 const short *samples);
2284 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2285 const AVFrame *pict);
2286 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2287 const AVSubtitle *sub);
2288
2289 int avcodec_close(AVCodecContext *avctx);
2290
2291 void avcodec_register_all(void);
2292
2293 void avcodec_flush_buffers(AVCodecContext *avctx);
2294
2295 void avcodec_default_free_buffers(AVCodecContext *s);
2296
2297 /* misc usefull functions */
2298
2299 /**
2300 * returns a single letter to describe the picture type
2301 */
2302 char av_get_pict_type_char(int pict_type);
2303
2304
2305 /* frame parsing */
2306 typedef struct AVCodecParserContext {
2307 void *priv_data;
2308 struct AVCodecParser *parser;
2309 int64_t frame_offset; /* offset of the current frame */
2310 int64_t cur_offset; /* current offset
2311 (incremented by each av_parser_parse()) */
2312 int64_t last_frame_offset; /* offset of the last frame */
2313 /* video info */
2314 int pict_type; /* XXX: put it back in AVCodecContext */
2315 int repeat_pict; /* XXX: put it back in AVCodecContext */
2316 int64_t pts; /* pts of the current frame */
2317 int64_t dts; /* dts of the current frame */
2318
2319 /* private data */
2320 int64_t last_pts;
2321 int64_t last_dts;
2322 int fetch_timestamp;
2323
2324 #define AV_PARSER_PTS_NB 4
2325 int cur_frame_start_index;
2326 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2327 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2328 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2329
2330 int flags;
2331 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2332 } AVCodecParserContext;
2333
2334 typedef struct AVCodecParser {
2335 int codec_ids[5]; /* several codec IDs are permitted */
2336 int priv_data_size;
2337 int (*parser_init)(AVCodecParserContext *s);
2338 int (*parser_parse)(AVCodecParserContext *s,
2339 AVCodecContext *avctx,
2340 uint8_t **poutbuf, int *poutbuf_size,
2341 const uint8_t *buf, int buf_size);
2342 void (*parser_close)(AVCodecParserContext *s);
2343 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2344 struct AVCodecParser *next;
2345 } AVCodecParser;
2346
2347 extern AVCodecParser *av_first_parser;
2348
2349 void av_register_codec_parser(AVCodecParser *parser);
2350 AVCodecParserContext *av_parser_init(int codec_id);
2351 int av_parser_parse(AVCodecParserContext *s,
2352 AVCodecContext *avctx,
2353 uint8_t **poutbuf, int *poutbuf_size,
2354 const uint8_t *buf, int buf_size,
2355 int64_t pts, int64_t dts);
2356 int av_parser_change(AVCodecParserContext *s,
2357 AVCodecContext *avctx,
2358 uint8_t **poutbuf, int *poutbuf_size,
2359 const uint8_t *buf, int buf_size, int keyframe);
2360 void av_parser_close(AVCodecParserContext *s);
2361
2362 extern AVCodecParser mpegvideo_parser;
2363 extern AVCodecParser mpeg4video_parser;
2364 extern AVCodecParser h261_parser;
2365 extern AVCodecParser h263_parser;
2366 extern AVCodecParser h264_parser;
2367 extern AVCodecParser mjpeg_parser;
2368 extern AVCodecParser pnm_parser;
2369 extern AVCodecParser mpegaudio_parser;
2370 extern AVCodecParser ac3_parser;
2371 extern AVCodecParser dvdsub_parser;
2372 extern AVCodecParser dvbsub_parser;
2373
2374 /* memory */
2375 void *av_malloc(unsigned int size);
2376 void *av_mallocz(unsigned int size);
2377 void *av_realloc(void *ptr, unsigned int size);
2378 void av_free(void *ptr);
2379 char *av_strdup(const char *s);
2380 void av_freep(void *ptr);
2381 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2382 /* for static data only */
2383 /* call av_free_static to release all staticaly allocated tables */
2384 void av_free_static(void);
2385 void *av_mallocz_static(unsigned int size);
2386 void *av_realloc_static(void *ptr, unsigned int size);
2387
2388 /* add by bero : in adx.c */
2389 int is_adx(const unsigned char *buf,size_t bufsize);
2390
2391 void img_copy(AVPicture *dst, const AVPicture *src,
2392 int pix_fmt, int width, int height);
2393
2394 /* av_log API */
2395
2396 #include <stdarg.h>
2397
2398 #define AV_LOG_QUIET -1
2399 #define AV_LOG_ERROR 0
2400 #define AV_LOG_INFO 1
2401 #define AV_LOG_DEBUG 2
2402
2403 #ifdef __GNUC__
2404 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2405 #else
2406 extern void av_log(void*, int level, const char *fmt, ...);
2407 #endif
2408
2409 extern void av_vlog(void*, int level, const char *fmt, va_list);
2410 extern int av_log_get_level(void);
2411 extern void av_log_set_level(int);
2412 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2413
2414 /* endian macros */
2415 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2416 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2417 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2418 (((uint8_t*)(x))[1] << 16) | \
2419 (((uint8_t*)(x))[2] << 8) | \
2420 ((uint8_t*)(x))[3])
2421 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2422 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2423 (((uint8_t*)(x))[2] << 16) | \
2424 (((uint8_t*)(x))[1] << 8) | \
2425 ((uint8_t*)(x))[0])
2426 #endif
2427
2428 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2429
2430 #ifdef __cplusplus
2431 }
2432 #endif
2433
2434 #endif /* AVCODEC_H */