rtp_callback: send number of mb patch by (Johan Bilien {jobi via.ecp fr)
[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 "common.h"
15 #include "rational.h"
16 #include <sys/types.h> /* size_t */
17
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "0.4.9-pre1"
20 #define LIBAVCODEC_BUILD 4740
21
22 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23 #define LIBAVCODEC_VERSION FFMPEG_VERSION
24
25 #define AV_STRINGIFY(s) AV_TOSTRING(s)
26 #define AV_TOSTRING(s) #s
27 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
28
29 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
30 #define AV_TIME_BASE 1000000
31
32 enum CodecID {
33 CODEC_ID_NONE,
34 CODEC_ID_MPEG1VIDEO,
35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
36 CODEC_ID_MPEG2VIDEO_XVMC,
37 CODEC_ID_H261,
38 CODEC_ID_H263,
39 CODEC_ID_RV10,
40 CODEC_ID_RV20,
41 CODEC_ID_MJPEG,
42 CODEC_ID_MJPEGB,
43 CODEC_ID_LJPEG,
44 CODEC_ID_SP5X,
45 CODEC_ID_MPEG4,
46 CODEC_ID_RAWVIDEO,
47 CODEC_ID_MSMPEG4V1,
48 CODEC_ID_MSMPEG4V2,
49 CODEC_ID_MSMPEG4V3,
50 CODEC_ID_WMV1,
51 CODEC_ID_WMV2,
52 CODEC_ID_H263P,
53 CODEC_ID_H263I,
54 CODEC_ID_FLV1,
55 CODEC_ID_SVQ1,
56 CODEC_ID_SVQ3,
57 CODEC_ID_DVVIDEO,
58 CODEC_ID_HUFFYUV,
59 CODEC_ID_CYUV,
60 CODEC_ID_H264,
61 CODEC_ID_INDEO3,
62 CODEC_ID_VP3,
63 CODEC_ID_THEORA,
64 CODEC_ID_ASV1,
65 CODEC_ID_ASV2,
66 CODEC_ID_FFV1,
67 CODEC_ID_4XM,
68 CODEC_ID_VCR1,
69 CODEC_ID_CLJR,
70 CODEC_ID_MDEC,
71 CODEC_ID_ROQ,
72 CODEC_ID_INTERPLAY_VIDEO,
73 CODEC_ID_XAN_WC3,
74 CODEC_ID_XAN_WC4,
75 CODEC_ID_RPZA,
76 CODEC_ID_CINEPAK,
77 CODEC_ID_WS_VQA,
78 CODEC_ID_MSRLE,
79 CODEC_ID_MSVIDEO1,
80 CODEC_ID_IDCIN,
81 CODEC_ID_8BPS,
82 CODEC_ID_SMC,
83 CODEC_ID_FLIC,
84 CODEC_ID_TRUEMOTION1,
85 CODEC_ID_VMDVIDEO,
86 CODEC_ID_MSZH,
87 CODEC_ID_ZLIB,
88 CODEC_ID_QTRLE,
89 CODEC_ID_SNOW,
90 CODEC_ID_TSCC,
91 CODEC_ID_ULTI,
92 CODEC_ID_QDRAW,
93 CODEC_ID_VIXL,
94 CODEC_ID_QPEG,
95 CODEC_ID_XVID,
96 CODEC_ID_PNG,
97 CODEC_ID_PPM,
98 CODEC_ID_PBM,
99 CODEC_ID_PGM,
100 CODEC_ID_PGMYUV,
101 CODEC_ID_PAM,
102 CODEC_ID_FFVHUFF,
103 CODEC_ID_RV30,
104 CODEC_ID_RV40,
105 CODEC_ID_VC9,
106 CODEC_ID_WMV3,
107
108
109 /* various pcm "codecs" */
110 CODEC_ID_PCM_S16LE= 0x10000,
111 CODEC_ID_PCM_S16BE,
112 CODEC_ID_PCM_U16LE,
113 CODEC_ID_PCM_U16BE,
114 CODEC_ID_PCM_S8,
115 CODEC_ID_PCM_U8,
116 CODEC_ID_PCM_MULAW,
117 CODEC_ID_PCM_ALAW,
118
119 /* various adpcm codecs */
120 CODEC_ID_ADPCM_IMA_QT= 0x11000,
121 CODEC_ID_ADPCM_IMA_WAV,
122 CODEC_ID_ADPCM_IMA_DK3,
123 CODEC_ID_ADPCM_IMA_DK4,
124 CODEC_ID_ADPCM_IMA_WS,
125 CODEC_ID_ADPCM_IMA_SMJPEG,
126 CODEC_ID_ADPCM_MS,
127 CODEC_ID_ADPCM_4XM,
128 CODEC_ID_ADPCM_XA,
129 CODEC_ID_ADPCM_ADX,
130 CODEC_ID_ADPCM_EA,
131 CODEC_ID_ADPCM_G726,
132 CODEC_ID_ADPCM_CT,
133
134 /* AMR */
135 CODEC_ID_AMR_NB= 0x12000,
136 CODEC_ID_AMR_WB,
137
138 /* RealAudio codecs*/
139 CODEC_ID_RA_144= 0x13000,
140 CODEC_ID_RA_288,
141
142 /* various DPCM codecs */
143 CODEC_ID_ROQ_DPCM= 0x14000,
144 CODEC_ID_INTERPLAY_DPCM,
145 CODEC_ID_XAN_DPCM,
146 CODEC_ID_SOL_DPCM,
147
148 CODEC_ID_MP2= 0x15000,
149 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
150 CODEC_ID_AAC,
151 CODEC_ID_MPEG4AAC,
152 CODEC_ID_AC3,
153 CODEC_ID_DTS,
154 CODEC_ID_VORBIS,
155 CODEC_ID_DVAUDIO,
156 CODEC_ID_WMAV1,
157 CODEC_ID_WMAV2,
158 CODEC_ID_MACE3,
159 CODEC_ID_MACE6,
160 CODEC_ID_VMDAUDIO,
161 CODEC_ID_SONIC,
162 CODEC_ID_SONIC_LS,
163 CODEC_ID_FLAC,
164 CODEC_ID_MP3ADU,
165
166 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
167 stream (only used by libavformat) */
168 };
169
170 /* CODEC_ID_MP3LAME is absolete */
171 #define CODEC_ID_MP3LAME CODEC_ID_MP3
172
173 enum CodecType {
174 CODEC_TYPE_UNKNOWN = -1,
175 CODEC_TYPE_VIDEO,
176 CODEC_TYPE_AUDIO,
177 CODEC_TYPE_DATA,
178 };
179
180 /**
181 * Pixel format. Notes:
182 *
183 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
184 * color is put together as:
185 * (A << 24) | (R << 16) | (G << 8) | B
186 * This is stored as BGRA on little endian CPU architectures and ARGB on
187 * big endian CPUs.
188 *
189 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
190 * image data is stored in AVFrame.data[0]. The palette is transported in
191 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
192 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
193 * also endian-specific). Note also that the individual RGB palette
194 * components stored in AVFrame.data[1] should be in the range 0..255.
195 * This is important as many custom PAL8 video codecs that were designed
196 * to run on the IBM VGA graphics adapter use 6-bit palette components.
197 */
198 enum PixelFormat {
199 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
200 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
201 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
202 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
203 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
204 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
205 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
206 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
207 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
208 PIX_FMT_RGB565, ///< always stored in cpu endianness
209 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
210 PIX_FMT_GRAY8,
211 PIX_FMT_MONOWHITE, ///< 0 is white
212 PIX_FMT_MONOBLACK, ///< 0 is black
213 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
214 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
215 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
216 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
217 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
218 PIX_FMT_XVMC_MPEG2_IDCT,
219 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
220 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
221 PIX_FMT_NB,
222 };
223
224 /* currently unused, may be used if 24/32 bits samples ever supported */
225 enum SampleFormat {
226 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
227 SAMPLE_FMT_S32, ///< signed 32 bits
228 SAMPLE_FMT_FLT, ///< float
229 SAMPLE_FMT_DBL, ///< double
230 };
231
232 /* in bytes */
233 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
234
235 /**
236 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
237 * this is mainly needed because some optimized bitstream readers read
238 * 32 or 64 bit at once and could read over the end<br>
239 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
240 * MPEG bitstreams could cause overread and segfault
241 */
242 #define FF_INPUT_BUFFER_PADDING_SIZE 8
243
244 /**
245 * minimum encoding buffer size.
246 * used to avoid some checks during header writing
247 */
248 #define FF_MIN_BUFFER_SIZE 16384
249
250 /* motion estimation type, EPZS by default */
251 enum Motion_Est_ID {
252 ME_ZERO = 1,
253 ME_FULL,
254 ME_LOG,
255 ME_PHODS,
256 ME_EPZS,
257 ME_X1
258 };
259
260 enum AVRounding {
261 AV_ROUND_ZERO = 0, ///< round toward zero
262 AV_ROUND_INF = 1, ///< round away from zero
263 AV_ROUND_DOWN = 2, ///< round toward -infinity
264 AV_ROUND_UP = 3, ///< round toward +infinity
265 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
266 };
267
268 typedef struct RcOverride{
269 int start_frame;
270 int end_frame;
271 int qscale; // if this is 0 then quality_factor will be used instead
272 float quality_factor;
273 } RcOverride;
274
275 /* only for ME compatiblity with old apps */
276 extern int motion_estimation_method;
277
278 #define FF_MAX_B_FRAMES 8
279
280 /* encoding support
281 these flags can be passed in AVCodecContext.flags before initing
282 Note: note not everything is supported yet
283 */
284
285 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
286 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
287 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
288 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
289 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
290 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
291 /* parent program gurantees that the input for b-frame containing streams is not written to
292 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
293 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
294 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
295 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
296 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
297 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
298 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
299 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
300 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
301 of only at frame boundaries */
302 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
303 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
304 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
305 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
306 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
307 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
308 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
309 /* Fx : Flag for h263+ extra options */
310 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
311 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
312 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
313 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
314 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
315 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
316 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
317 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
318 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
319 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
320 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
321 #define CODEC_FLAG_CLOSED_GOP 0x80000000
322 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
323 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
324
325 /* Unsupported options :
326 * Syntax Arithmetic coding (SAC)
327 * Reference Picture Selection
328 * Independant Segment Decoding */
329 /* /Fx */
330 /* codec capabilities */
331
332 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
333 /**
334 * Codec uses get_buffer() for allocating buffers.
335 * direct rendering method 1
336 */
337 #define CODEC_CAP_DR1 0x0002
338 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
339 used */
340 #define CODEC_CAP_PARSE_ONLY 0x0004
341 #define CODEC_CAP_TRUNCATED 0x0008
342 /* codec can export data for HW decoding (XvMC) */
343 #define CODEC_CAP_HWACCEL 0x0010
344 /**
345 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
346 * if this is not set, the codec is guranteed to never be feeded with NULL data
347 */
348 #define CODEC_CAP_DELAY 0x0020
349
350 //the following defines might change, so dont expect compatibility if u use them
351 #define MB_TYPE_INTRA4x4 0x0001
352 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
353 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
354 #define MB_TYPE_16x16 0x0008
355 #define MB_TYPE_16x8 0x0010
356 #define MB_TYPE_8x16 0x0020
357 #define MB_TYPE_8x8 0x0040
358 #define MB_TYPE_INTERLACED 0x0080
359 #define MB_TYPE_DIRECT2 0x0100 //FIXME
360 #define MB_TYPE_ACPRED 0x0200
361 #define MB_TYPE_GMC 0x0400
362 #define MB_TYPE_SKIP 0x0800
363 #define MB_TYPE_P0L0 0x1000
364 #define MB_TYPE_P1L0 0x2000
365 #define MB_TYPE_P0L1 0x4000
366 #define MB_TYPE_P1L1 0x8000
367 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
368 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
369 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
370 #define MB_TYPE_QUANT 0x00010000
371 #define MB_TYPE_CBP 0x00020000
372 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
373
374 /**
375 * Pan Scan area.
376 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
377 */
378 typedef struct AVPanScan{
379 /**
380 * id.
381 * - encoding: set by user.
382 * - decoding: set by lavc
383 */
384 int id;
385
386 /**
387 * width and height in 1/16 pel
388 * - encoding: set by user.
389 * - decoding: set by lavc
390 */
391 int width;
392 int height;
393
394 /**
395 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
396 * - encoding: set by user.
397 * - decoding: set by lavc
398 */
399 int16_t position[3][2];
400 }AVPanScan;
401
402 #define FF_COMMON_FRAME \
403 /**\
404 * pointer to the picture planes.\
405 * this might be different from the first allocated byte\
406 * - encoding: \
407 * - decoding: \
408 */\
409 uint8_t *data[4];\
410 int linesize[4];\
411 /**\
412 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
413 * this isnt used by lavc unless the default get/release_buffer() is used\
414 * - encoding: \
415 * - decoding: \
416 */\
417 uint8_t *base[4];\
418 /**\
419 * 1 -> keyframe, 0-> not\
420 * - encoding: set by lavc\
421 * - decoding: set by lavc\
422 */\
423 int key_frame;\
424 \
425 /**\
426 * picture type of the frame, see ?_TYPE below.\
427 * - encoding: set by lavc for coded_picture (and set by user for input)\
428 * - decoding: set by lavc\
429 */\
430 int pict_type;\
431 \
432 /**\
433 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
434 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
435 * - encoding: MUST be set by user\
436 * - decoding: set by lavc\
437 */\
438 int64_t pts;\
439 \
440 /**\
441 * picture number in bitstream order.\
442 * - encoding: set by\
443 * - decoding: set by lavc\
444 */\
445 int coded_picture_number;\
446 /**\
447 * picture number in display order.\
448 * - encoding: set by\
449 * - decoding: set by lavc\
450 */\
451 int display_picture_number;\
452 \
453 /**\
454 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
455 * - encoding: set by lavc for coded_picture (and set by user for input)\
456 * - decoding: set by lavc\
457 */\
458 int quality; \
459 \
460 /**\
461 * buffer age (1->was last buffer and dint change, 2->..., ...).\
462 * set to INT_MAX if the buffer has not been used yet \
463 * - encoding: unused\
464 * - decoding: MUST be set by get_buffer()\
465 */\
466 int age;\
467 \
468 /**\
469 * is this picture used as reference\
470 * - encoding: unused\
471 * - decoding: set by lavc (before get_buffer() call))\
472 */\
473 int reference;\
474 \
475 /**\
476 * QP table\
477 * - encoding: unused\
478 * - decoding: set by lavc\
479 */\
480 int8_t *qscale_table;\
481 /**\
482 * QP store stride\
483 * - encoding: unused\
484 * - decoding: set by lavc\
485 */\
486 int qstride;\
487 \
488 /**\
489 * mbskip_table[mb]>=1 if MB didnt change\
490 * stride= mb_width = (width+15)>>4\
491 * - encoding: unused\
492 * - decoding: set by lavc\
493 */\
494 uint8_t *mbskip_table;\
495 \
496 /**\
497 * Motion vector table.\
498 * @code\
499 * example:\
500 * int mv_sample_log2= 4 - motion_subsample_log2;\
501 * int mb_width= (width+15)>>4;\
502 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
503 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
504 * @endcode\
505 * - encoding: set by user\
506 * - decoding: set by lavc\
507 */\
508 int16_t (*motion_val[2])[2];\
509 \
510 /**\
511 * Macroblock type table\
512 * mb_type_base + mb_width + 2\
513 * - encoding: set by user\
514 * - decoding: set by lavc\
515 */\
516 uint32_t *mb_type;\
517 \
518 /**\
519 * log2 of the size of the block which a single vector in motion_val represents: \
520 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
521 * - encoding: unused\
522 * - decoding: set by lavc\
523 */\
524 uint8_t motion_subsample_log2;\
525 \
526 /**\
527 * for some private data of the user\
528 * - encoding: unused\
529 * - decoding: set by user\
530 */\
531 void *opaque;\
532 \
533 /**\
534 * error\
535 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
536 * - decoding: unused\
537 */\
538 uint64_t error[4];\
539 \
540 /**\
541 * type of the buffer (to keep track of who has to dealloc data[*])\
542 * - encoding: set by the one who allocs it\
543 * - decoding: set by the one who allocs it\
544 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
545 */\
546 int type;\
547 \
548 /**\
549 * when decoding, this signal how much the picture must be delayed.\
550 * extra_delay = repeat_pict / (2*fps)\
551 * - encoding: unused\
552 * - decoding: set by lavc\
553 */\
554 int repeat_pict;\
555 \
556 /**\
557 * \
558 */\
559 int qscale_type;\
560 \
561 /**\
562 * The content of the picture is interlaced.\
563 * - encoding: set by user\
564 * - decoding: set by lavc (default 0)\
565 */\
566 int interlaced_frame;\
567 \
568 /**\
569 * if the content is interlaced, is top field displayed first.\
570 * - encoding: set by user\
571 * - decoding: set by lavc\
572 */\
573 int top_field_first;\
574 \
575 /**\
576 * Pan scan.\
577 * - encoding: set by user\
578 * - decoding: set by lavc\
579 */\
580 AVPanScan *pan_scan;\
581 \
582 /**\
583 * tell user application that palette has changed from previous frame.\
584 * - encoding: ??? (no palette-enabled encoder yet)\
585 * - decoding: set by lavc (default 0)\
586 */\
587 int palette_has_changed;\
588 \
589 /**\
590 * Codec suggestion on buffer type if != 0\
591 * - encoding: unused\
592 * - decoding: set by lavc (before get_buffer() call))\
593 */\
594 int buffer_hints;\
595 \
596 /**\
597 * DCT coeffitients\
598 * - encoding: unused\
599 * - decoding: set by lavc\
600 */\
601 short *dct_coeff;\
602 \
603 /**\
604 * Motion referece frame index\
605 * - encoding: set by user\
606 * - decoding: set by lavc\
607 */\
608 int8_t *ref_index[2];
609
610 #define FF_QSCALE_TYPE_MPEG1 0
611 #define FF_QSCALE_TYPE_MPEG2 1
612
613 #define FF_BUFFER_TYPE_INTERNAL 1
614 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
615 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
616 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
617
618
619 #define FF_I_TYPE 1 // Intra
620 #define FF_P_TYPE 2 // Predicted
621 #define FF_B_TYPE 3 // Bi-dir predicted
622 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
623 #define FF_SI_TYPE 5
624 #define FF_SP_TYPE 6
625
626 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
627 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
628 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
629 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
630
631 /**
632 * Audio Video Frame.
633 */
634 typedef struct AVFrame {
635 FF_COMMON_FRAME
636 } AVFrame;
637
638 #define DEFAULT_FRAME_RATE_BASE 1001000
639
640 /**
641 * Used by av_log
642 */
643 typedef struct AVCLASS AVClass;
644 struct AVCLASS {
645 const char* class_name;
646 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
647 or AVFormatContext, which begin with an AVClass.
648 Needed because av_log is in libavcodec and has no visibility
649 of AVIn/OutputFormat */
650 };
651
652 /**
653 * main external api structure.
654 */
655 typedef struct AVCodecContext {
656 /**
657 * Info on struct for av_log
658 * - set by avcodec_alloc_context
659 */
660 AVClass *av_class;
661 /**
662 * the average bitrate.
663 * - encoding: set by user. unused for constant quantizer encoding
664 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
665 */
666 int bit_rate;
667
668 /**
669 * number of bits the bitstream is allowed to diverge from the reference.
670 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
671 * - encoding: set by user. unused for constant quantizer encoding
672 * - decoding: unused
673 */
674 int bit_rate_tolerance;
675
676 /**
677 * CODEC_FLAG_*.
678 * - encoding: set by user.
679 * - decoding: set by user.
680 */
681 int flags;
682
683 /**
684 * some codecs needs additionnal format info. It is stored here
685 * - encoding: set by user.
686 * - decoding: set by lavc. (FIXME is this ok?)
687 */
688 int sub_id;
689
690 /**
691 * motion estimation algorithm used for video coding.
692 * - encoding: MUST be set by user.
693 * - decoding: unused
694 */
695 int me_method;
696
697 /**
698 * some codecs need / can use extra-data like huffman tables.
699 * mjpeg: huffman tables
700 * rv10: additional flags
701 * mpeg4: global headers (they can be in the bitstream or here)
702 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
703 * then extradata_size to avoid prolems if its read with the bitstream reader
704 * - encoding: set/allocated/freed by lavc.
705 * - decoding: set/allocated/freed by user.
706 */
707 void *extradata;
708 int extradata_size;
709
710 /* video only */
711 /**
712 * frames per sec multiplied by frame_rate_base.
713 * for variable fps this is the precission, so if the timestamps
714 * can be specified in msec precssion then this is 1000*frame_rate_base
715 * - encoding: MUST be set by user
716 * - decoding: set by lavc. 0 or the frame_rate if available
717 */
718 int frame_rate;
719
720 /**
721 * picture width / height.
722 * - encoding: MUST be set by user.
723 * - decoding: set by lavc.
724 * Note, for compatibility its possible to set this instead of
725 * coded_width/height before decoding
726 */
727 int width, height;
728
729 #define FF_ASPECT_EXTENDED 15
730
731 /**
732 * the number of pictures in a group of pitures, or 0 for intra_only.
733 * - encoding: set by user.
734 * - decoding: unused
735 */
736 int gop_size;
737
738 /**
739 * pixel format, see PIX_FMT_xxx.
740 * - encoding: set by user.
741 * - decoding: set by lavc.
742 */
743 enum PixelFormat pix_fmt;
744
745 /**
746 * Frame rate emulation. If not zero lower layer (i.e. format handler)
747 * has to read frames at native frame rate.
748 * - encoding: set by user.
749 * - decoding: unused.
750 */
751 int rate_emu;
752
753 /**
754 * if non NULL, 'draw_horiz_band' is called by the libavcodec
755 * decoder to draw an horizontal band. It improve cache usage. Not
756 * all codecs can do that. You must check the codec capabilities
757 * before
758 * - encoding: unused
759 * - decoding: set by user.
760 * @param height the height of the slice
761 * @param y the y position of the slice
762 * @param type 1->top field, 2->bottom field, 3->frame
763 * @param offset offset into the AVFrame.data from which the slice should be read
764 */
765 void (*draw_horiz_band)(struct AVCodecContext *s,
766 const AVFrame *src, int offset[4],
767 int y, int type, int height);
768
769 /* audio only */
770 int sample_rate; ///< samples per sec
771 int channels;
772
773 /**
774 * audio sample format.
775 * - encoding: set by user.
776 * - decoding: set by lavc.
777 */
778 enum SampleFormat sample_fmt; ///< sample format, currenly unused
779
780 /* the following data should not be initialized */
781 int frame_size; ///< in samples, initialized when calling 'init'
782 int frame_number; ///< audio or video frame number
783 int real_pict_num; ///< returns the real picture number of previous encoded frame
784
785 /**
786 * number of frames the decoded output will be delayed relative to
787 * the encoded input.
788 * - encoding: set by lavc.
789 * - decoding: unused
790 */
791 int delay;
792
793 /* - encoding parameters */
794 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
795 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
796
797 /**
798 * minimum quantizer.
799 * - encoding: set by user.
800 * - decoding: unused
801 */
802 int qmin;
803
804 /**
805 * maximum quantizer.
806 * - encoding: set by user.
807 * - decoding: unused
808 */
809 int qmax;
810
811 /**
812 * maximum quantizer difference etween frames.
813 * - encoding: set by user.
814 * - decoding: unused
815 */
816 int max_qdiff;
817
818 /**
819 * maximum number of b frames between non b frames.
820 * note: the output will be delayed by max_b_frames+1 relative to the input
821 * - encoding: set by user.
822 * - decoding: unused
823 */
824 int max_b_frames;
825
826 /**
827 * qscale factor between ip and b frames.
828 * - encoding: set by user.
829 * - decoding: unused
830 */
831 float b_quant_factor;
832
833 /** obsolete FIXME remove */
834 int rc_strategy;
835 int b_frame_strategy;
836
837 /**
838 * hurry up amount.
839 * - encoding: unused
840 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
841 */
842 int hurry_up;
843
844 struct AVCodec *codec;
845
846 void *priv_data;
847
848 /* unused, FIXME remove*/
849 int rtp_mode;
850
851 int rtp_payload_size; /* The size of the RTP payload, the coder will */
852 /* do it's best to deliver a chunk with size */
853 /* below rtp_payload_size, the chunk will start */
854 /* with a start code on some codecs like H.263 */
855 /* This doesn't take account of any particular */
856 /* headers inside the transmited RTP payload */
857
858
859 /* The RTP callcack: This function is called */
860 /* every time the encoder as a packet to send */
861 /* Depends on the encoder if the data starts */
862 /* with a Start Code (it should) H.263 does. */
863 /* mb_nb contains the number of macroblocks */
864 /* encoded in the RTP payload */
865 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
866
867 /* statistics, used for 2-pass encoding */
868 int mv_bits;
869 int header_bits;
870 int i_tex_bits;
871 int p_tex_bits;
872 int i_count;
873 int p_count;
874 int skip_count;
875 int misc_bits;
876
877 /**
878 * number of bits used for the previously encoded frame.
879 * - encoding: set by lavc
880 * - decoding: unused
881 */
882 int frame_bits;
883
884 /**
885 * private data of the user, can be used to carry app specific stuff.
886 * - encoding: set by user
887 * - decoding: set by user
888 */
889 void *opaque;
890
891 char codec_name[32];
892 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
893 enum CodecID codec_id; /* see CODEC_ID_xxx */
894
895 /**
896 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
897 * this is used to workaround some encoder bugs
898 * - encoding: set by user, if not then the default based on codec_id will be used
899 * - decoding: set by user, will be converted to upper case by lavc during init
900 */
901 unsigned int codec_tag;
902
903 /**
904 * workaround bugs in encoders which sometimes cannot be detected automatically.
905 * - encoding: unused
906 * - decoding: set by user
907 */
908 int workaround_bugs;
909 #define FF_BUG_AUTODETECT 1 ///< autodetection
910 #define FF_BUG_OLD_MSMPEG4 2
911 #define FF_BUG_XVID_ILACE 4
912 #define FF_BUG_UMP4 8
913 #define FF_BUG_NO_PADDING 16
914 #define FF_BUG_AMV 32
915 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
916 #define FF_BUG_QPEL_CHROMA 64
917 #define FF_BUG_STD_QPEL 128
918 #define FF_BUG_QPEL_CHROMA2 256
919 #define FF_BUG_DIRECT_BLOCKSIZE 512
920 #define FF_BUG_EDGE 1024
921 #define FF_BUG_HPEL_CHROMA 2048
922 #define FF_BUG_DC_CLIP 4096
923 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
924
925 /**
926 * luma single coeff elimination threshold.
927 * - encoding: set by user
928 * - decoding: unused
929 */
930 int luma_elim_threshold;
931
932 /**
933 * chroma single coeff elimination threshold.
934 * - encoding: set by user
935 * - decoding: unused
936 */
937 int chroma_elim_threshold;
938
939 /**
940 * strictly follow the std (MPEG4, ...).
941 * - encoding: set by user
942 * - decoding: unused
943 */
944 int strict_std_compliance;
945
946 /**
947 * qscale offset between ip and b frames.
948 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
949 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
950 * - encoding: set by user.
951 * - decoding: unused
952 */
953 float b_quant_offset;
954
955 /**
956 * error resilience higher values will detect more errors but may missdetect
957 * some more or less valid parts as errors.
958 * - encoding: unused
959 * - decoding: set by user
960 */
961 int error_resilience;
962 #define FF_ER_CAREFULL 1
963 #define FF_ER_COMPLIANT 2
964 #define FF_ER_AGGRESSIVE 3
965 #define FF_ER_VERY_AGGRESSIVE 4
966
967 /**
968 * called at the beginning of each frame to get a buffer for it.
969 * if pic.reference is set then the frame will be read later by lavc
970 * avcodec_align_dimensions() should be used to find the required width and
971 * height, as they normally need to be rounded up to the next multiple of 16
972 * - encoding: unused
973 * - decoding: set by lavc, user can override
974 */
975 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
976
977 /**
978 * called to release buffers which where allocated with get_buffer.
979 * a released buffer can be reused in get_buffer()
980 * pic.data[*] must be set to NULL
981 * - encoding: unused
982 * - decoding: set by lavc, user can override
983 */
984 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
985
986 /**
987 * if 1 the stream has a 1 frame delay during decoding.
988 * - encoding: set by lavc
989 * - decoding: set by lavc
990 */
991 int has_b_frames;
992
993 int block_align; ///< used by some WAV based audio codecs
994
995 int parse_only; /* - decoding only: if true, only parsing is done
996 (function avcodec_parse_frame()). The frame
997 data is returned. Only MPEG codecs support this now. */
998
999 /**
1000 * 0-> h263 quant 1-> mpeg quant.
1001 * - encoding: set by user.
1002 * - decoding: unused
1003 */
1004 int mpeg_quant;
1005
1006 /**
1007 * pass1 encoding statistics output buffer.
1008 * - encoding: set by lavc
1009 * - decoding: unused
1010 */
1011 char *stats_out;
1012
1013 /**
1014 * pass2 encoding statistics input buffer.
1015 * concatenated stuff from stats_out of pass1 should be placed here
1016 * - encoding: allocated/set/freed by user
1017 * - decoding: unused
1018 */
1019 char *stats_in;
1020
1021 /**
1022 * ratecontrol qmin qmax limiting method.
1023 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1024 * - encoding: set by user.
1025 * - decoding: unused
1026 */
1027 float rc_qsquish;
1028
1029 float rc_qmod_amp;
1030 int rc_qmod_freq;
1031
1032 /**
1033 * ratecontrol override, see RcOverride.
1034 * - encoding: allocated/set/freed by user.
1035 * - decoding: unused
1036 */
1037 RcOverride *rc_override;
1038 int rc_override_count;
1039
1040 /**
1041 * rate control equation.
1042 * - encoding: set by user
1043 * - decoding: unused
1044 */
1045 char *rc_eq;
1046
1047 /**
1048 * maximum bitrate.
1049 * - encoding: set by user.
1050 * - decoding: unused
1051 */
1052 int rc_max_rate;
1053
1054 /**
1055 * minimum bitrate.
1056 * - encoding: set by user.
1057 * - decoding: unused
1058 */
1059 int rc_min_rate;
1060
1061 /**
1062 * decoder bitstream buffer size.
1063 * - encoding: set by user.
1064 * - decoding: unused
1065 */
1066 int rc_buffer_size;
1067 float rc_buffer_aggressivity;
1068
1069 /**
1070 * qscale factor between p and i frames.
1071 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1072 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1073 * - encoding: set by user.
1074 * - decoding: unused
1075 */
1076 float i_quant_factor;
1077
1078 /**
1079 * qscale offset between p and i frames.
1080 * - encoding: set by user.
1081 * - decoding: unused
1082 */
1083 float i_quant_offset;
1084
1085 /**
1086 * initial complexity for pass1 ratecontrol.
1087 * - encoding: set by user.
1088 * - decoding: unused
1089 */
1090 float rc_initial_cplx;
1091
1092 /**
1093 * dct algorithm, see FF_DCT_* below.
1094 * - encoding: set by user
1095 * - decoding: unused
1096 */
1097 int dct_algo;
1098 #define FF_DCT_AUTO 0
1099 #define FF_DCT_FASTINT 1
1100 #define FF_DCT_INT 2
1101 #define FF_DCT_MMX 3
1102 #define FF_DCT_MLIB 4
1103 #define FF_DCT_ALTIVEC 5
1104 #define FF_DCT_FAAN 6
1105
1106 /**
1107 * luminance masking (0-> disabled).
1108 * - encoding: set by user
1109 * - decoding: unused
1110 */
1111 float lumi_masking;
1112
1113 /**
1114 * temporary complexity masking (0-> disabled).
1115 * - encoding: set by user
1116 * - decoding: unused
1117 */
1118 float temporal_cplx_masking;
1119
1120 /**
1121 * spatial complexity masking (0-> disabled).
1122 * - encoding: set by user
1123 * - decoding: unused
1124 */
1125 float spatial_cplx_masking;
1126
1127 /**
1128 * p block masking (0-> disabled).
1129 * - encoding: set by user
1130 * - decoding: unused
1131 */
1132 float p_masking;
1133
1134 /**
1135 * darkness masking (0-> disabled).
1136 * - encoding: set by user
1137 * - decoding: unused
1138 */
1139 float dark_masking;
1140
1141
1142 /* for binary compatibility */
1143 int unused;
1144
1145 /**
1146 * idct algorithm, see FF_IDCT_* below.
1147 * - encoding: set by user
1148 * - decoding: set by user
1149 */
1150 int idct_algo;
1151 #define FF_IDCT_AUTO 0
1152 #define FF_IDCT_INT 1
1153 #define FF_IDCT_SIMPLE 2
1154 #define FF_IDCT_SIMPLEMMX 3
1155 #define FF_IDCT_LIBMPEG2MMX 4
1156 #define FF_IDCT_PS2 5
1157 #define FF_IDCT_MLIB 6
1158 #define FF_IDCT_ARM 7
1159 #define FF_IDCT_ALTIVEC 8
1160 #define FF_IDCT_SH4 9
1161 #define FF_IDCT_SIMPLEARM 10
1162 #define FF_IDCT_H264 11
1163
1164 /**
1165 * slice count.
1166 * - encoding: set by lavc
1167 * - decoding: set by user (or 0)
1168 */
1169 int slice_count;
1170 /**
1171 * slice offsets in the frame in bytes.
1172 * - encoding: set/allocated by lavc
1173 * - decoding: set/allocated by user (or NULL)
1174 */
1175 int *slice_offset;
1176
1177 /**
1178 * error concealment flags.
1179 * - encoding: unused
1180 * - decoding: set by user
1181 */
1182 int error_concealment;
1183 #define FF_EC_GUESS_MVS 1
1184 #define FF_EC_DEBLOCK 2
1185
1186 /**
1187 * dsp_mask could be add used to disable unwanted CPU features
1188 * CPU features (i.e. MMX, SSE. ...)
1189 *
1190 * with FORCE flag you may instead enable given CPU features
1191 * (Dangerous: usable in case of misdetection, improper usage however will
1192 * result into program crash)
1193 */
1194 unsigned dsp_mask;
1195 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1196 /* lower 16 bits - CPU features */
1197 #ifdef HAVE_MMX
1198 #define FF_MM_MMX 0x0001 /* standard MMX */
1199 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1200 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1201 #define FF_MM_SSE 0x0008 /* SSE functions */
1202 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1203 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1204 #endif /* HAVE_MMX */
1205
1206 /**
1207 * bits per sample/pixel from the demuxer (needed for huffyuv).
1208 * - encoding: set by lavc
1209 * - decoding: set by user
1210 */
1211 int bits_per_sample;
1212
1213 /**
1214 * prediction method (needed for huffyuv).
1215 * - encoding: set by user
1216 * - decoding: unused
1217 */
1218 int prediction_method;
1219 #define FF_PRED_LEFT 0
1220 #define FF_PRED_PLANE 1
1221 #define FF_PRED_MEDIAN 2
1222
1223 /**
1224 * sample aspect ratio (0 if unknown).
1225 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1226 * - encoding: set by user.
1227 * - decoding: set by lavc.
1228 */
1229 AVRational sample_aspect_ratio;
1230
1231 /**
1232 * the picture in the bitstream.
1233 * - encoding: set by lavc
1234 * - decoding: set by lavc
1235 */
1236 AVFrame *coded_frame;
1237
1238 /**
1239 * debug.
1240 * - encoding: set by user.
1241 * - decoding: set by user.
1242 */
1243 int debug;
1244 #define FF_DEBUG_PICT_INFO 1
1245 #define FF_DEBUG_RC 2
1246 #define FF_DEBUG_BITSTREAM 4
1247 #define FF_DEBUG_MB_TYPE 8
1248 #define FF_DEBUG_QP 16
1249 #define FF_DEBUG_MV 32
1250 #define FF_DEBUG_DCT_COEFF 0x00000040
1251 #define FF_DEBUG_SKIP 0x00000080
1252 #define FF_DEBUG_STARTCODE 0x00000100
1253 #define FF_DEBUG_PTS 0x00000200
1254 #define FF_DEBUG_ER 0x00000400
1255 #define FF_DEBUG_MMCO 0x00000800
1256 #define FF_DEBUG_BUGS 0x00001000
1257 #define FF_DEBUG_VIS_QP 0x00002000
1258 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1259
1260 /**
1261 * debug.
1262 * - encoding: set by user.
1263 * - decoding: set by user.
1264 */
1265 int debug_mv;
1266 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1267 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1268 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1269
1270 /**
1271 * error.
1272 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1273 * - decoding: unused
1274 */
1275 uint64_t error[4];
1276
1277 /**
1278 * minimum MB quantizer.
1279 * - encoding: set by user.
1280 * - decoding: unused
1281 */
1282 int mb_qmin;
1283
1284 /**
1285 * maximum MB quantizer.
1286 * - encoding: set by user.
1287 * - decoding: unused
1288 */
1289 int mb_qmax;
1290
1291 /**
1292 * motion estimation compare function.
1293 * - encoding: set by user.
1294 * - decoding: unused
1295 */
1296 int me_cmp;
1297 /**
1298 * subpixel motion estimation compare function.
1299 * - encoding: set by user.
1300 * - decoding: unused
1301 */
1302 int me_sub_cmp;
1303 /**
1304 * macroblock compare function (not supported yet).
1305 * - encoding: set by user.
1306 * - decoding: unused
1307 */
1308 int mb_cmp;
1309 /**
1310 * interlaced dct compare function
1311 * - encoding: set by user.
1312 * - decoding: unused
1313 */
1314 int ildct_cmp;
1315 #define FF_CMP_SAD 0
1316 #define FF_CMP_SSE 1
1317 #define FF_CMP_SATD 2
1318 #define FF_CMP_DCT 3
1319 #define FF_CMP_PSNR 4
1320 #define FF_CMP_BIT 5
1321 #define FF_CMP_RD 6
1322 #define FF_CMP_ZERO 7
1323 #define FF_CMP_VSAD 8
1324 #define FF_CMP_VSSE 9
1325 #define FF_CMP_NSSE 10
1326 #define FF_CMP_W53 11
1327 #define FF_CMP_W97 12
1328 #define FF_CMP_DCTMAX 13
1329 #define FF_CMP_CHROMA 256
1330
1331 /**
1332 * ME diamond size & shape.
1333 * - encoding: set by user.
1334 * - decoding: unused
1335 */
1336 int dia_size;
1337
1338 /**
1339 * amount of previous MV predictors (2a+1 x 2a+1 square).
1340 * - encoding: set by user.
1341 * - decoding: unused
1342 */
1343 int last_predictor_count;
1344
1345 /**
1346 * pre pass for motion estimation.
1347 * - encoding: set by user.
1348 * - decoding: unused
1349 */
1350 int pre_me;
1351
1352 /**
1353 * motion estimation pre pass compare function.
1354 * - encoding: set by user.
1355 * - decoding: unused
1356 */
1357 int me_pre_cmp;
1358
1359 /**
1360 * ME pre pass diamond size & shape.
1361 * - encoding: set by user.
1362 * - decoding: unused
1363 */
1364 int pre_dia_size;
1365
1366 /**
1367 * subpel ME quality.
1368 * - encoding: set by user.
1369 * - decoding: unused
1370 */
1371 int me_subpel_quality;
1372
1373 /**
1374 * callback to negotiate the pixelFormat.
1375 * @param fmt is the list of formats which are supported by the codec,
1376 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1377 * the first is allways the native one
1378 * @return the choosen format
1379 * - encoding: unused
1380 * - decoding: set by user, if not set then the native format will always be choosen
1381 */
1382 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1383
1384 /**
1385 * DTG active format information (additionnal aspect ratio
1386 * information only used in DVB MPEG2 transport streams). 0 if
1387 * not set.
1388 *
1389 * - encoding: unused.
1390 * - decoding: set by decoder
1391 */
1392 int dtg_active_format;
1393 #define FF_DTG_AFD_SAME 8
1394 #define FF_DTG_AFD_4_3 9
1395 #define FF_DTG_AFD_16_9 10
1396 #define FF_DTG_AFD_14_9 11
1397 #define FF_DTG_AFD_4_3_SP_14_9 13
1398 #define FF_DTG_AFD_16_9_SP_14_9 14
1399 #define FF_DTG_AFD_SP_4_3 15
1400
1401 /**
1402 * Maximum motion estimation search range in subpel units.
1403 * if 0 then no limit
1404 *
1405 * - encoding: set by user.
1406 * - decoding: unused.
1407 */
1408 int me_range;
1409
1410 /**
1411 * frame_rate_base.
1412 * for variable fps this is 1
1413 * - encoding: set by user.
1414 * - decoding: set by lavc.
1415 * @todo move this after frame_rate
1416 */
1417
1418 int frame_rate_base;
1419 /**
1420 * intra quantizer bias.
1421 * - encoding: set by user.
1422 * - decoding: unused
1423 */
1424 int intra_quant_bias;
1425 #define FF_DEFAULT_QUANT_BIAS 999999
1426
1427 /**
1428 * inter quantizer bias.
1429 * - encoding: set by user.
1430 * - decoding: unused
1431 */
1432 int inter_quant_bias;
1433
1434 /**
1435 * color table ID.
1436 * - encoding: unused.
1437 * - decoding: which clrtable should be used for 8bit RGB images
1438 * table have to be stored somewhere FIXME
1439 */
1440 int color_table_id;
1441
1442 /**
1443 * internal_buffer count.
1444 * Dont touch, used by lavc default_get_buffer()
1445 */
1446 int internal_buffer_count;
1447
1448 /**
1449 * internal_buffers.
1450 * Dont touch, used by lavc default_get_buffer()
1451 */
1452 void *internal_buffer;
1453
1454 #define FF_LAMBDA_SHIFT 7
1455 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1456 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1457 #define FF_LAMBDA_MAX (256*128-1)
1458
1459 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1460 /**
1461 * global quality for codecs which cannot change it per frame.
1462 * this should be proportional to MPEG1/2/4 qscale.
1463 * - encoding: set by user.
1464 * - decoding: unused
1465 */
1466 int global_quality;
1467
1468 #define FF_CODER_TYPE_VLC 0
1469 #define FF_CODER_TYPE_AC 1
1470 /**
1471 * coder type
1472 * - encoding: set by user.
1473 * - decoding: unused
1474 */
1475 int coder_type;
1476
1477 /**
1478 * context model
1479 * - encoding: set by user.
1480 * - decoding: unused
1481 */
1482 int context_model;
1483
1484 /**
1485 * slice flags
1486 * - encoding: unused
1487 * - decoding: set by user.
1488 */
1489 int slice_flags;
1490 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1491 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1492 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1493
1494 /**
1495 * XVideo Motion Acceleration
1496 * - encoding: forbidden
1497 * - decoding: set by decoder
1498 */
1499 int xvmc_acceleration;
1500
1501 /**
1502 * macroblock decision mode
1503 * - encoding: set by user.
1504 * - decoding: unused
1505 */
1506 int mb_decision;
1507 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1508 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1509 #define FF_MB_DECISION_RD 2 ///< rate distoration
1510
1511 /**
1512 * custom intra quantization matrix
1513 * - encoding: set by user, can be NULL
1514 * - decoding: set by lavc
1515 */
1516 uint16_t *intra_matrix;
1517
1518 /**
1519 * custom inter quantization matrix
1520 * - encoding: set by user, can be NULL
1521 * - decoding: set by lavc
1522 */
1523 uint16_t *inter_matrix;
1524
1525 /**
1526 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1527 * this is used to workaround some encoder bugs
1528 * - encoding: unused
1529 * - decoding: set by user, will be converted to upper case by lavc during init
1530 */
1531 unsigned int stream_codec_tag;
1532
1533 /**
1534 * scene change detection threshold.
1535 * 0 is default, larger means fewer detected scene changes
1536 * - encoding: set by user.
1537 * - decoding: unused
1538 */
1539 int scenechange_threshold;
1540
1541 /**
1542 * minimum lagrange multipler
1543 * - encoding: set by user.
1544 * - decoding: unused
1545 */
1546 int lmin;
1547
1548 /**
1549 * maximum lagrange multipler
1550 * - encoding: set by user.
1551 * - decoding: unused
1552 */
1553 int lmax;
1554
1555 /**
1556 * Palette control structure
1557 * - encoding: ??? (no palette-enabled encoder yet)
1558 * - decoding: set by user.
1559 */
1560 struct AVPaletteControl *palctrl;
1561
1562 /**
1563 * noise reduction strength
1564 * - encoding: set by user.
1565 * - decoding: unused
1566 */
1567 int noise_reduction;
1568
1569 /**
1570 * called at the beginning of a frame to get cr buffer for it.
1571 * buffer type (size, hints) must be the same. lavc won't check it.
1572 * lavc will pass previous buffer in pic, function should return
1573 * same buffer or new buffer with old frame "painted" into it.
1574 * if pic.data[0] == NULL must behave like get_buffer().
1575 * - encoding: unused
1576 * - decoding: set by lavc, user can override
1577 */
1578 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1579
1580 /**
1581 * number of bits which should be loaded into the rc buffer before decoding starts
1582 * - encoding: set by user.
1583 * - decoding: unused
1584 */
1585 int rc_initial_buffer_occupancy;
1586
1587 /**
1588 *
1589 * - encoding: set by user.
1590 * - decoding: unused
1591 */
1592 int inter_threshold;
1593
1594 /**
1595 * CODEC_FLAG2_*.
1596 * - encoding: set by user.
1597 * - decoding: set by user.
1598 */
1599 int flags2;
1600
1601 /**
1602 * simulates errors in the bitstream to test error concealment.
1603 * - encoding: set by user.
1604 * - decoding: unused.
1605 */
1606 int error_rate;
1607
1608 /**
1609 * MP3 antialias algorithm, see FF_AA_* below.
1610 * - encoding: unused
1611 * - decoding: set by user
1612 */
1613 int antialias_algo;
1614 #define FF_AA_AUTO 0
1615 #define FF_AA_FASTINT 1 //not implemented yet
1616 #define FF_AA_INT 2
1617 #define FF_AA_FLOAT 3
1618 /**
1619 * Quantizer noise shaping.
1620 * - encoding: set by user
1621 * - decoding: unused
1622 */
1623 int quantizer_noise_shaping;
1624
1625 /**
1626 * Thread count.
1627 * is used to decide how many independant tasks should be passed to execute()
1628 * - encoding: set by user
1629 * - decoding: set by user
1630 */
1631 int thread_count;
1632
1633 /**
1634 * the codec may call this to execute several independant things. it will return only after
1635 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1636 * default implementation will execute the parts serially
1637 * @param count the number of things to execute
1638 * - encoding: set by lavc, user can override
1639 * - decoding: set by lavc, user can override
1640 */
1641 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1642
1643 /**
1644 * Thread opaque.
1645 * can be used by execute() to store some per AVCodecContext stuff.
1646 * - encoding: set by execute()
1647 * - decoding: set by execute()
1648 */
1649 void *thread_opaque;
1650
1651 /**
1652 * Motion estimation threshold. under which no motion estimation is
1653 * performed, but instead the user specified motion vectors are used
1654 *
1655 * - encoding: set by user
1656 * - decoding: unused
1657 */
1658 int me_threshold;
1659
1660 /**
1661 * Macroblock threshold. under which the user specified macroblock types will be used
1662 * - encoding: set by user
1663 * - decoding: unused
1664 */
1665 int mb_threshold;
1666
1667 /**
1668 * precision of the intra dc coefficient - 8.
1669 * - encoding: set by user
1670 * - decoding: unused
1671 */
1672 int intra_dc_precision;
1673
1674 /**
1675 * noise vs. sse weight for the nsse comparsion function.
1676 * - encoding: set by user
1677 * - decoding: unused
1678 */
1679 int nsse_weight;
1680
1681 /**
1682 * number of macroblock rows at the top which are skiped.
1683 * - encoding: unused
1684 * - decoding: set by user
1685 */
1686 int skip_top;
1687
1688 /**
1689 * number of macroblock rows at the bottom which are skiped.
1690 * - encoding: unused
1691 * - decoding: set by user
1692 */
1693 int skip_bottom;
1694
1695 /**
1696 * profile
1697 * - encoding: set by user
1698 * - decoding: set by lavc
1699 */
1700 int profile;
1701 #define FF_PROFILE_UNKNOWN -99
1702
1703 /**
1704 * level
1705 * - encoding: set by user
1706 * - decoding: set by lavc
1707 */
1708 int level;
1709 #define FF_LEVEL_UNKNOWN -99
1710
1711 /**
1712 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1713 * - encoding: unused
1714 * - decoding: set by user
1715 */
1716 int lowres;
1717
1718 /**
1719 * bitsream width / height. may be different from width/height if lowres
1720 * or other things are used
1721 * - encoding: unused
1722 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1723 */
1724 int coded_width, coded_height;
1725
1726 /**
1727 * frame skip threshold
1728 * - encoding: set by user
1729 * - decoding: unused
1730 */
1731 int frame_skip_threshold;
1732
1733 /**
1734 * frame skip factor
1735 * - encoding: set by user
1736 * - decoding: unused
1737 */
1738 int frame_skip_factor;
1739
1740 /**
1741 * frame skip exponent
1742 * - encoding: set by user
1743 * - decoding: unused
1744 */
1745 int frame_skip_exp;
1746
1747 /**
1748 * frame skip comparission function
1749 * - encoding: set by user.
1750 * - decoding: unused
1751 */
1752 int frame_skip_cmp;
1753 } AVCodecContext;
1754
1755
1756 /**
1757 * AVOption.
1758 */
1759 typedef struct AVOption {
1760 /** options' name */
1761 const char *name; /* if name is NULL, it indicates a link to next */
1762 /** short English text help or const struct AVOption* subpointer */
1763 const char *help; // const struct AVOption* sub;
1764 /** offset to context structure where the parsed value should be stored */
1765 int offset;
1766 /** options' type */
1767 int type;
1768 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1769 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1770 #define FF_OPT_TYPE_INT 3 ///< integer
1771 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1772 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1773 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1774 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1775 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1776 /** min value (min == max -> no limits) */
1777 double min;
1778 /** maximum value for double/int */
1779 double max;
1780 /** default boo [0,1]l/double/int value */
1781 double defval;
1782 /**
1783 * default string value (with optional semicolon delimited extra option-list
1784 * i.e. option1;option2;option3
1785 * defval might select other then first argument as default
1786 */
1787 const char *defstr;
1788 #define FF_OPT_MAX_DEPTH 10
1789 } AVOption;
1790
1791 /**
1792 * Parse option(s) and sets fields in passed structure
1793 * @param strct structure where the parsed results will be written
1794 * @param list list with AVOptions
1795 * @param opts string with options for parsing
1796 */
1797 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1798
1799
1800 /**
1801 * AVCodec.
1802 */
1803 typedef struct AVCodec {
1804 const char *name;
1805 enum CodecType type;
1806 enum CodecID id;
1807 int priv_data_size;
1808 int (*init)(AVCodecContext *);
1809 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1810 int (*close)(AVCodecContext *);
1811 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1812 uint8_t *buf, int buf_size);
1813 int capabilities;
1814 const AVOption *options;
1815 struct AVCodec *next;
1816 void (*flush)(AVCodecContext *);
1817 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1818 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1819 } AVCodec;
1820
1821 /**
1822 * four components are given, that's all.
1823 * the last component is alpha
1824 */
1825 typedef struct AVPicture {
1826 uint8_t *data[4];
1827 int linesize[4]; ///< number of bytes per line
1828 } AVPicture;
1829
1830 /**
1831 * AVPaletteControl
1832 * This structure defines a method for communicating palette changes
1833 * between and demuxer and a decoder.
1834 */
1835 #define AVPALETTE_SIZE 1024
1836 #define AVPALETTE_COUNT 256
1837 typedef struct AVPaletteControl {
1838
1839 /* demuxer sets this to 1 to indicate the palette has changed;
1840 * decoder resets to 0 */
1841 int palette_changed;
1842
1843 /* 4-byte ARGB palette entries, stored in native byte order; note that
1844 * the individual palette components should be on a 8-bit scale; if
1845 * the palette data comes from a IBM VGA native format, the component
1846 * data is probably 6 bits in size and needs to be scaled */
1847 unsigned int palette[AVPALETTE_COUNT];
1848
1849 } AVPaletteControl;
1850
1851 extern AVCodec ac3_encoder;
1852 extern AVCodec mp2_encoder;
1853 extern AVCodec mp3lame_encoder;
1854 extern AVCodec oggvorbis_encoder;
1855 extern AVCodec faac_encoder;
1856 extern AVCodec xvid_encoder;
1857 extern AVCodec mpeg1video_encoder;
1858 extern AVCodec mpeg2video_encoder;
1859 extern AVCodec h261_encoder;
1860 extern AVCodec h263_encoder;
1861 extern AVCodec h263p_encoder;
1862 extern AVCodec flv_encoder;
1863 extern AVCodec rv10_encoder;
1864 extern AVCodec rv20_encoder;
1865 extern AVCodec dvvideo_encoder;
1866 extern AVCodec mjpeg_encoder;
1867 extern AVCodec ljpeg_encoder;
1868 extern AVCodec png_encoder;
1869 extern AVCodec ppm_encoder;
1870 extern AVCodec pgm_encoder;
1871 extern AVCodec pgmyuv_encoder;
1872 extern AVCodec pbm_encoder;
1873 extern AVCodec pam_encoder;
1874 extern AVCodec mpeg4_encoder;
1875 extern AVCodec msmpeg4v1_encoder;
1876 extern AVCodec msmpeg4v2_encoder;
1877 extern AVCodec msmpeg4v3_encoder;
1878 extern AVCodec wmv1_encoder;
1879 extern AVCodec wmv2_encoder;
1880 extern AVCodec huffyuv_encoder;
1881 extern AVCodec ffvhuff_encoder;
1882 extern AVCodec h264_encoder;
1883 extern AVCodec asv1_encoder;
1884 extern AVCodec asv2_encoder;
1885 extern AVCodec vcr1_encoder;
1886 extern AVCodec ffv1_encoder;
1887 extern AVCodec snow_encoder;
1888 extern AVCodec mdec_encoder;
1889 extern AVCodec zlib_encoder;
1890 extern AVCodec sonic_encoder;
1891 extern AVCodec sonic_ls_encoder;
1892 extern AVCodec svq1_encoder;
1893
1894 extern AVCodec h263_decoder;
1895 extern AVCodec h261_decoder;
1896 extern AVCodec mpeg4_decoder;
1897 extern AVCodec msmpeg4v1_decoder;
1898 extern AVCodec msmpeg4v2_decoder;
1899 extern AVCodec msmpeg4v3_decoder;
1900 extern AVCodec wmv1_decoder;
1901 extern AVCodec wmv2_decoder;
1902 extern AVCodec vc9_decoder;
1903 extern AVCodec wmv3_decoder;
1904 extern AVCodec mpeg1video_decoder;
1905 extern AVCodec mpeg2video_decoder;
1906 extern AVCodec mpegvideo_decoder;
1907 extern AVCodec mpeg_xvmc_decoder;
1908 extern AVCodec h263i_decoder;
1909 extern AVCodec flv_decoder;
1910 extern AVCodec rv10_decoder;
1911 extern AVCodec rv20_decoder;
1912 extern AVCodec rv30_decoder;
1913 extern AVCodec rv40_decoder;
1914 extern AVCodec svq1_decoder;
1915 extern AVCodec svq3_decoder;
1916 extern AVCodec dvvideo_decoder;
1917 extern AVCodec wmav1_decoder;
1918 extern AVCodec wmav2_decoder;
1919 extern AVCodec mjpeg_decoder;
1920 extern AVCodec mjpegb_decoder;
1921 extern AVCodec sp5x_decoder;
1922 extern AVCodec png_decoder;
1923 extern AVCodec mp2_decoder;
1924 extern AVCodec mp3_decoder;
1925 extern AVCodec mp3adu_decoder;
1926 extern AVCodec mace3_decoder;
1927 extern AVCodec mace6_decoder;
1928 extern AVCodec huffyuv_decoder;
1929 extern AVCodec ffvhuff_decoder;
1930 extern AVCodec oggvorbis_decoder;
1931 extern AVCodec cyuv_decoder;
1932 extern AVCodec h264_decoder;
1933 extern AVCodec indeo3_decoder;
1934 extern AVCodec vp3_decoder;
1935 extern AVCodec theora_decoder;
1936 extern AVCodec amr_nb_decoder;
1937 extern AVCodec amr_nb_encoder;
1938 extern AVCodec amr_wb_encoder;
1939 extern AVCodec amr_wb_decoder;
1940 extern AVCodec aac_decoder;
1941 extern AVCodec mpeg4aac_decoder;
1942 extern AVCodec asv1_decoder;
1943 extern AVCodec asv2_decoder;
1944 extern AVCodec vcr1_decoder;
1945 extern AVCodec cljr_decoder;
1946 extern AVCodec ffv1_decoder;
1947 extern AVCodec snow_decoder;
1948 extern AVCodec fourxm_decoder;
1949 extern AVCodec mdec_decoder;
1950 extern AVCodec roq_decoder;
1951 extern AVCodec interplay_video_decoder;
1952 extern AVCodec xan_wc3_decoder;
1953 extern AVCodec rpza_decoder;
1954 extern AVCodec cinepak_decoder;
1955 extern AVCodec msrle_decoder;
1956 extern AVCodec msvideo1_decoder;
1957 extern AVCodec vqa_decoder;
1958 extern AVCodec idcin_decoder;
1959 extern AVCodec eightbps_decoder;
1960 extern AVCodec smc_decoder;
1961 extern AVCodec flic_decoder;
1962 extern AVCodec vmdvideo_decoder;
1963 extern AVCodec vmdaudio_decoder;
1964 extern AVCodec truemotion1_decoder;
1965 extern AVCodec mszh_decoder;
1966 extern AVCodec zlib_decoder;
1967 extern AVCodec ra_144_decoder;
1968 extern AVCodec ra_288_decoder;
1969 extern AVCodec roq_dpcm_decoder;
1970 extern AVCodec interplay_dpcm_decoder;
1971 extern AVCodec xan_dpcm_decoder;
1972 extern AVCodec sol_dpcm_decoder;
1973 extern AVCodec sonic_decoder;
1974 extern AVCodec qtrle_decoder;
1975 extern AVCodec flac_decoder;
1976 extern AVCodec tscc_decoder;
1977 extern AVCodec ulti_decoder;
1978 extern AVCodec qdraw_decoder;
1979 extern AVCodec xl_decoder;
1980 extern AVCodec qpeg_decoder;
1981
1982 /* pcm codecs */
1983 #define PCM_CODEC(id, name) \
1984 extern AVCodec name ## _decoder; \
1985 extern AVCodec name ## _encoder
1986
1987 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1988 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1989 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1990 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1991 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1992 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1993 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1994 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1995
1996 /* adpcm codecs */
1997
1998 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1999 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2000 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2001 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2002 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2003 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2004 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2005 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2006 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2007 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2008 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2009 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2010 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2011
2012 #undef PCM_CODEC
2013
2014 /* dummy raw video codec */
2015 extern AVCodec rawvideo_encoder;
2016 extern AVCodec rawvideo_decoder;
2017
2018 /* the following codecs use external GPL libs */
2019 extern AVCodec ac3_decoder;
2020 extern AVCodec dts_decoder;
2021
2022 /* resample.c */
2023
2024 struct ReSampleContext;
2025 struct AVResampleContext;
2026
2027 typedef struct ReSampleContext ReSampleContext;
2028
2029 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2030 int output_rate, int input_rate);
2031 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2032 void audio_resample_close(ReSampleContext *s);
2033
2034 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2035 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2036 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2037 void av_resample_close(struct AVResampleContext *c);
2038
2039 /* YUV420 format is assumed ! */
2040
2041 struct ImgReSampleContext;
2042
2043 typedef struct ImgReSampleContext ImgReSampleContext;
2044
2045 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2046 int input_width, int input_height);
2047
2048 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2049 int iwidth, int iheight,
2050 int topBand, int bottomBand,
2051 int leftBand, int rightBand,
2052 int padtop, int padbottom,
2053 int padleft, int padright);
2054
2055
2056 void img_resample(ImgReSampleContext *s,
2057 AVPicture *output, const AVPicture *input);
2058
2059 void img_resample_close(ImgReSampleContext *s);
2060
2061 /**
2062 * Allocate memory for a picture. Call avpicture_free to free it.
2063 *
2064 * @param picture the picture to be filled in.
2065 * @param pix_fmt the format of the picture.
2066 * @param width the width of the picture.
2067 * @param height the height of the picture.
2068 * @return 0 if successful, -1 if not.
2069 */
2070 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2071
2072 /* Free a picture previously allocated by avpicture_alloc. */
2073 void avpicture_free(AVPicture *picture);
2074
2075 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2076 int pix_fmt, int width, int height);
2077 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2078 unsigned char *dest, int dest_size);
2079 int avpicture_get_size(int pix_fmt, int width, int height);
2080 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2081 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2082 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2083 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2084 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2085
2086 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2087 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2088 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2089 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2090 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2091 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2092
2093 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2094 int has_alpha);
2095 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2096 int has_alpha, int *loss_ptr);
2097
2098 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2099 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2100 int img_get_alpha_info(const AVPicture *src,
2101 int pix_fmt, int width, int height);
2102
2103 /* convert among pixel formats */
2104 int img_convert(AVPicture *dst, int dst_pix_fmt,
2105 const AVPicture *src, int pix_fmt,
2106 int width, int height);
2107
2108 /* deinterlace a picture */
2109 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2110 int pix_fmt, int width, int height);
2111
2112 /* external high level API */
2113
2114 extern AVCodec *first_avcodec;
2115
2116 /* returns LIBAVCODEC_VERSION_INT constant */
2117 unsigned avcodec_version(void);
2118 /* returns LIBAVCODEC_BUILD constant */
2119 unsigned avcodec_build(void);
2120 void avcodec_init(void);
2121
2122 void register_avcodec(AVCodec *format);
2123 AVCodec *avcodec_find_encoder(enum CodecID id);
2124 AVCodec *avcodec_find_encoder_by_name(const char *name);
2125 AVCodec *avcodec_find_decoder(enum CodecID id);
2126 AVCodec *avcodec_find_decoder_by_name(const char *name);
2127 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2128
2129 void avcodec_get_context_defaults(AVCodecContext *s);
2130 AVCodecContext *avcodec_alloc_context(void);
2131 void avcodec_get_frame_defaults(AVFrame *pic);
2132 AVFrame *avcodec_alloc_frame(void);
2133
2134 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2135 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2136 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2137 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2138 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2139 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2140
2141 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2142 void avcodec_thread_free(AVCodecContext *s);
2143 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2144 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2145 //FIXME func typedef
2146
2147 /**
2148 * opens / inits the AVCodecContext.
2149 * not thread save!
2150 */
2151 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2152
2153 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2154 int *frame_size_ptr,
2155 uint8_t *buf, int buf_size);
2156 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2157 int *got_picture_ptr,
2158 uint8_t *buf, int buf_size);
2159 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2160 int *data_size_ptr,
2161 uint8_t *buf, int buf_size);
2162 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2163 const short *samples);
2164 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2165 const AVFrame *pict);
2166
2167 int avcodec_close(AVCodecContext *avctx);
2168
2169 void avcodec_register_all(void);
2170
2171 void avcodec_flush_buffers(AVCodecContext *avctx);
2172
2173 /* misc usefull functions */
2174
2175 /**
2176 * returns a single letter to describe the picture type
2177 */
2178 char av_get_pict_type_char(int pict_type);
2179
2180 /**
2181 * reduce a fraction.
2182 * this is usefull for framerate calculations
2183 * @param max the maximum allowed for dst_nom & dst_den
2184 * @return 1 if exact, 0 otherwise
2185 */
2186 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2187
2188 /**
2189 * rescale a 64bit integer with rounding to nearest.
2190 * a simple a*b/c isnt possible as it can overflow
2191 */
2192 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2193
2194 /**
2195 * rescale a 64bit integer with specified rounding.
2196 * a simple a*b/c isnt possible as it can overflow
2197 */
2198 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2199
2200 /* frame parsing */
2201 typedef struct AVCodecParserContext {
2202 void *priv_data;
2203 struct AVCodecParser *parser;
2204 int64_t frame_offset; /* offset of the current frame */
2205 int64_t cur_offset; /* current offset
2206 (incremented by each av_parser_parse()) */
2207 int64_t last_frame_offset; /* offset of the last frame */
2208 /* video info */
2209 int pict_type; /* XXX: put it back in AVCodecContext */
2210 int repeat_pict; /* XXX: put it back in AVCodecContext */
2211 int64_t pts; /* pts of the current frame */
2212 int64_t dts; /* dts of the current frame */
2213
2214 /* private data */
2215 int64_t last_pts;
2216 int64_t last_dts;
2217 int fetch_timestamp;
2218
2219 #define AV_PARSER_PTS_NB 4
2220 int cur_frame_start_index;
2221 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2222 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2223 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2224 } AVCodecParserContext;
2225
2226 typedef struct AVCodecParser {
2227 int codec_ids[5]; /* several codec IDs are permitted */
2228 int priv_data_size;
2229 int (*parser_init)(AVCodecParserContext *s);
2230 int (*parser_parse)(AVCodecParserContext *s,
2231 AVCodecContext *avctx,
2232 uint8_t **poutbuf, int *poutbuf_size,
2233 const uint8_t *buf, int buf_size);
2234 void (*parser_close)(AVCodecParserContext *s);
2235 struct AVCodecParser *next;
2236 } AVCodecParser;
2237
2238 extern AVCodecParser *av_first_parser;
2239
2240 void av_register_codec_parser(AVCodecParser *parser);
2241 AVCodecParserContext *av_parser_init(int codec_id);
2242 int av_parser_parse(AVCodecParserContext *s,
2243 AVCodecContext *avctx,
2244 uint8_t **poutbuf, int *poutbuf_size,
2245 const uint8_t *buf, int buf_size,
2246 int64_t pts, int64_t dts);
2247 void av_parser_close(AVCodecParserContext *s);
2248
2249 extern AVCodecParser mpegvideo_parser;
2250 extern AVCodecParser mpeg4video_parser;
2251 extern AVCodecParser h261_parser;
2252 extern AVCodecParser h263_parser;
2253 extern AVCodecParser h264_parser;
2254 extern AVCodecParser mjpeg_parser;
2255 extern AVCodecParser pnm_parser;
2256 extern AVCodecParser mpegaudio_parser;
2257 extern AVCodecParser ac3_parser;
2258
2259 /* memory */
2260 void *av_malloc(unsigned int size);
2261 void *av_mallocz(unsigned int size);
2262 void *av_realloc(void *ptr, unsigned int size);
2263 void av_free(void *ptr);
2264 char *av_strdup(const char *s);
2265 void av_freep(void *ptr);
2266 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2267 /* for static data only */
2268 /* call av_free_static to release all staticaly allocated tables */
2269 void av_free_static(void);
2270 void *av_mallocz_static(unsigned int size);
2271 void *av_realloc_static(void *ptr, unsigned int size);
2272
2273 /* add by bero : in adx.c */
2274 int is_adx(const unsigned char *buf,size_t bufsize);
2275
2276 void img_copy(AVPicture *dst, const AVPicture *src,
2277 int pix_fmt, int width, int height);
2278
2279 /* av_log API */
2280
2281 #include <stdarg.h>
2282
2283 #define AV_LOG_QUIET -1
2284 #define AV_LOG_ERROR 0
2285 #define AV_LOG_INFO 1
2286 #define AV_LOG_DEBUG 2
2287
2288 #ifdef __GNUC__
2289 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2290 #else
2291 extern void av_log(void*, int level, const char *fmt, ...);
2292 #endif
2293
2294 extern void av_vlog(void*, int level, const char *fmt, va_list);
2295 extern int av_log_get_level(void);
2296 extern void av_log_set_level(int);
2297 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2298
2299 /* endian macros */
2300 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2301 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2302 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2303 (((uint8_t*)(x))[1] << 16) | \
2304 (((uint8_t*)(x))[2] << 8) | \
2305 ((uint8_t*)(x))[3])
2306 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2307 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2308 (((uint8_t*)(x))[2] << 16) | \
2309 (((uint8_t*)(x))[1] << 8) | \
2310 ((uint8_t*)(x))[0])
2311 #endif
2312
2313 #ifdef __cplusplus
2314 }
2315 #endif
2316
2317 #endif /* AVCODEC_H */