simplify
[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 0x000408
19 #define FFMPEG_VERSION "0.4.8"
20 #define LIBAVCODEC_BUILD 4700
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 enum CodecID {
30 CODEC_ID_NONE,
31 CODEC_ID_MPEG1VIDEO,
32 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
33 CODEC_ID_MPEG2VIDEO_XVMC,
34 CODEC_ID_H263,
35 CODEC_ID_RV10,
36 CODEC_ID_RV20,
37 CODEC_ID_MP2,
38 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
39 CODEC_ID_VORBIS,
40 CODEC_ID_AC3,
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_DVAUDIO,
59 CODEC_ID_WMAV1,
60 CODEC_ID_WMAV2,
61 CODEC_ID_MACE3,
62 CODEC_ID_MACE6,
63 CODEC_ID_HUFFYUV,
64 CODEC_ID_CYUV,
65 CODEC_ID_H264,
66 CODEC_ID_INDEO3,
67 CODEC_ID_VP3,
68 CODEC_ID_THEORA,
69 CODEC_ID_AAC,
70 CODEC_ID_MPEG4AAC,
71 CODEC_ID_ASV1,
72 CODEC_ID_ASV2,
73 CODEC_ID_FFV1,
74 CODEC_ID_4XM,
75 CODEC_ID_VCR1,
76 CODEC_ID_CLJR,
77 CODEC_ID_MDEC,
78 CODEC_ID_ROQ,
79 CODEC_ID_INTERPLAY_VIDEO,
80 CODEC_ID_XAN_WC3,
81 CODEC_ID_XAN_WC4,
82 CODEC_ID_RPZA,
83 CODEC_ID_CINEPAK,
84 CODEC_ID_WS_VQA,
85 CODEC_ID_MSRLE,
86 CODEC_ID_MSVIDEO1,
87 CODEC_ID_IDCIN,
88 CODEC_ID_8BPS,
89 CODEC_ID_SMC,
90 CODEC_ID_FLIC,
91 CODEC_ID_TRUEMOTION1,
92 CODEC_ID_VMDVIDEO,
93 CODEC_ID_VMDAUDIO,
94 CODEC_ID_MSZH,
95 CODEC_ID_ZLIB,
96
97 /* various pcm "codecs" */
98 CODEC_ID_PCM_S16LE,
99 CODEC_ID_PCM_S16BE,
100 CODEC_ID_PCM_U16LE,
101 CODEC_ID_PCM_U16BE,
102 CODEC_ID_PCM_S8,
103 CODEC_ID_PCM_U8,
104 CODEC_ID_PCM_MULAW,
105 CODEC_ID_PCM_ALAW,
106
107 /* various adpcm codecs */
108 CODEC_ID_ADPCM_IMA_QT,
109 CODEC_ID_ADPCM_IMA_WAV,
110 CODEC_ID_ADPCM_IMA_DK3,
111 CODEC_ID_ADPCM_IMA_DK4,
112 CODEC_ID_ADPCM_IMA_WS,
113 CODEC_ID_ADPCM_MS,
114 CODEC_ID_ADPCM_4XM,
115 CODEC_ID_ADPCM_XA,
116 CODEC_ID_ADPCM_ADX,
117
118 /* AMR */
119 CODEC_ID_AMR_NB,
120 CODEC_ID_AMR_WB,
121
122 /* RealAudio codecs*/
123 CODEC_ID_RA_144,
124 CODEC_ID_RA_288,
125
126 /* various DPCM codecs */
127 CODEC_ID_ROQ_DPCM,
128 CODEC_ID_INTERPLAY_DPCM,
129 CODEC_ID_XAN_DPCM,
130
131 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
132 stream (only used by libavformat) */
133 };
134
135 /* CODEC_ID_MP3LAME is absolete */
136 #define CODEC_ID_MP3LAME CODEC_ID_MP3
137
138 enum CodecType {
139 CODEC_TYPE_UNKNOWN = -1,
140 CODEC_TYPE_VIDEO,
141 CODEC_TYPE_AUDIO,
142 CODEC_TYPE_DATA,
143 };
144
145 /**
146 * Pixel format. Notes:
147 *
148 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
149 * color is put together as:
150 * (A << 24) | (R << 16) | (G << 8) | B
151 * This is stored as BGRA on little endian CPU architectures and ARGB on
152 * big endian CPUs.
153 *
154 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
155 * image data is stored in AVFrame.data[0]. The palette is transported in
156 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
157 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
158 * also endian-specific). Note also that the individual RGB palette
159 * components stored in AVFrame.data[1] should be in the range 0..255.
160 * This is important as many custom PAL8 video codecs that were designed
161 * to run on the IBM VGA graphics adapter use 6-bit palette components.
162 */
163 enum PixelFormat {
164 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
165 PIX_FMT_YUV422,
166 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
167 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
168 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
169 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
170 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
171 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
172 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
173 PIX_FMT_RGB565, ///< always stored in cpu endianness
174 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
175 PIX_FMT_GRAY8,
176 PIX_FMT_MONOWHITE, ///< 0 is white
177 PIX_FMT_MONOBLACK, ///< 0 is black
178 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
179 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
180 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
181 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
182 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
183 PIX_FMT_XVMC_MPEG2_IDCT,
184 PIX_FMT_NB,
185 };
186
187 /* currently unused, may be used if 24/32 bits samples ever supported */
188 enum SampleFormat {
189 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
190 };
191
192 /* in bytes */
193 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
194
195 /**
196 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
197 * this is mainly needed because some optimized bitstream readers read
198 * 32 or 64 bit at once and could read over the end<br>
199 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
200 * MPEG bitstreams could cause overread and segfault
201 */
202 #define FF_INPUT_BUFFER_PADDING_SIZE 8
203
204 /* motion estimation type, EPZS by default */
205 enum Motion_Est_ID {
206 ME_ZERO = 1,
207 ME_FULL,
208 ME_LOG,
209 ME_PHODS,
210 ME_EPZS,
211 ME_X1
212 };
213
214 typedef struct RcOverride{
215 int start_frame;
216 int end_frame;
217 int qscale; // if this is 0 then quality_factor will be used instead
218 float quality_factor;
219 } RcOverride;
220
221 /* only for ME compatiblity with old apps */
222 extern int motion_estimation_method;
223
224 /* ME algos sorted by quality */
225 //FIXME remove IMHO
226 static const __attribute__((unused)) int Motion_Est_QTab[] =
227 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
228
229
230 #define FF_MAX_B_FRAMES 8
231
232 /* encoding support
233 these flags can be passed in AVCodecContext.flags before initing
234 Note: note not everything is supported yet
235 */
236
237 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
238 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
239 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
240 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
241 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
242 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
243 /* parent program gurantees that the input for b-frame containing streams is not written to
244 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
245 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
246 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
247 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
248 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
249 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
250 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
251 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
252 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
253 of only at frame boundaries */
254 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
255 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
256 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
257 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
258 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
259 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
260 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
261 /* Fx : Flag for h263+ extra options */
262 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
263 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
264 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
265 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
266 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
267 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
268 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
269 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
270 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
271 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
272 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
273 #define CODEC_FLAG_CLOSED_GOP 0x80000000
274 /* Unsupported options :
275 * Syntax Arithmetic coding (SAC)
276 * Reference Picture Selection
277 * Independant Segment Decoding */
278 /* /Fx */
279 /* codec capabilities */
280
281 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
282 /**
283 * Codec uses get_buffer() for allocating buffers.
284 * direct rendering method 1
285 */
286 #define CODEC_CAP_DR1 0x0002
287 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
288 used */
289 #define CODEC_CAP_PARSE_ONLY 0x0004
290 #define CODEC_CAP_TRUNCATED 0x0008
291
292 //the following defines might change, so dont expect compatibility if u use them
293 #define MB_TYPE_INTRA4x4 0x0001
294 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
295 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
296 #define MB_TYPE_16x16 0x0008
297 #define MB_TYPE_16x8 0x0010
298 #define MB_TYPE_8x16 0x0020
299 #define MB_TYPE_8x8 0x0040
300 #define MB_TYPE_INTERLACED 0x0080
301 #define MB_TYPE_DIRECT2 0x0100 //FIXME
302 #define MB_TYPE_ACPRED 0x0200
303 #define MB_TYPE_GMC 0x0400
304 #define MB_TYPE_SKIP 0x0800
305 #define MB_TYPE_P0L0 0x1000
306 #define MB_TYPE_P1L0 0x2000
307 #define MB_TYPE_P0L1 0x4000
308 #define MB_TYPE_P1L1 0x8000
309 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
310 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
311 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
312 #define MB_TYPE_QUANT 0x00010000
313 #define MB_TYPE_CBP 0x00020000
314 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
315
316 /**
317 * Pan Scan area.
318 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
319 */
320 typedef struct AVPanScan{
321 /**
322 * id.
323 * - encoding: set by user.
324 * - decoding: set by lavc
325 */
326 int id;
327
328 /**
329 * width and height in 1/16 pel
330 * - encoding: set by user.
331 * - decoding: set by lavc
332 */
333 int width;
334 int height;
335
336 /**
337 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
338 * - encoding: set by user.
339 * - decoding: set by lavc
340 */
341 int16_t position[3][2];
342 }AVPanScan;
343
344 #define FF_COMMON_FRAME \
345 /**\
346 * pointer to the picture planes.\
347 * this might be different from the first allocated byte\
348 * - encoding: \
349 * - decoding: \
350 */\
351 uint8_t *data[4];\
352 int linesize[4];\
353 /**\
354 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
355 * this isnt used by lavc unless the default get/release_buffer() is used\
356 * - encoding: \
357 * - decoding: \
358 */\
359 uint8_t *base[4];\
360 /**\
361 * 1 -> keyframe, 0-> not\
362 * - encoding: set by lavc\
363 * - decoding: set by lavc\
364 */\
365 int key_frame;\
366 \
367 /**\
368 * picture type of the frame, see ?_TYPE below.\
369 * - encoding: set by lavc for coded_picture (and set by user for input)\
370 * - decoding: set by lavc\
371 */\
372 int pict_type;\
373 \
374 /**\
375 * presentation timestamp in micro seconds (time when frame should be shown to user)\
376 * if 0 then the frame_rate will be used as reference\
377 * - encoding: MUST be set by user\
378 * - decoding: set by lavc\
379 */\
380 int64_t pts;\
381 \
382 /**\
383 * picture number in bitstream order.\
384 * - encoding: set by\
385 * - decoding: set by lavc\
386 */\
387 int coded_picture_number;\
388 /**\
389 * picture number in display order.\
390 * - encoding: set by\
391 * - decoding: set by lavc\
392 */\
393 int display_picture_number;\
394 \
395 /**\
396 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
397 * - encoding: set by lavc for coded_picture (and set by user for input)\
398 * - decoding: set by lavc\
399 */\
400 int quality; \
401 \
402 /**\
403 * buffer age (1->was last buffer and dint change, 2->..., ...).\
404 * set to INT_MAX if the buffer has not been used yet \
405 * - encoding: unused\
406 * - decoding: MUST be set by get_buffer()\
407 */\
408 int age;\
409 \
410 /**\
411 * is this picture used as reference\
412 * - encoding: unused\
413 * - decoding: set by lavc (before get_buffer() call))\
414 */\
415 int reference;\
416 \
417 /**\
418 * QP table\
419 * - encoding: unused\
420 * - decoding: set by lavc\
421 */\
422 int8_t *qscale_table;\
423 /**\
424 * QP store stride\
425 * - encoding: unused\
426 * - decoding: set by lavc\
427 */\
428 int qstride;\
429 \
430 /**\
431 * mbskip_table[mb]>=1 if MB didnt change\
432 * stride= mb_width = (width+15)>>4\
433 * - encoding: unused\
434 * - decoding: set by lavc\
435 */\
436 uint8_t *mbskip_table;\
437 \
438 /**\
439 * Motion vector table\
440 * - encoding: unused\
441 * - decoding: set by lavc\
442 */\
443 int16_t (*motion_val[2])[2];\
444 \
445 /**\
446 * Macroblock type table\
447 * mb_type_base + mb_width + 2\
448 * - encoding: unused\
449 * - decoding: set by lavc\
450 */\
451 uint32_t *mb_type;\
452 \
453 /**\
454 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
455 * - encoding: unused\
456 * - decoding: set by lavc\
457 */\
458 uint8_t motion_subsample_log2;\
459 \
460 /**\
461 * for some private data of the user\
462 * - encoding: unused\
463 * - decoding: set by user\
464 */\
465 void *opaque;\
466 \
467 /**\
468 * error\
469 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
470 * - decoding: unused\
471 */\
472 uint64_t error[4];\
473 \
474 /**\
475 * type of the buffer (to keep track of who has to dealloc data[*])\
476 * - encoding: set by the one who allocs it\
477 * - decoding: set by the one who allocs it\
478 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
479 */\
480 int type;\
481 \
482 /**\
483 * when decoding, this signal how much the picture must be delayed.\
484 * extra_delay = repeat_pict / (2*fps)\
485 * - encoding: unused\
486 * - decoding: set by lavc\
487 */\
488 int repeat_pict;\
489 \
490 /**\
491 * \
492 */\
493 int qscale_type;\
494 \
495 /**\
496 * The content of the picture is interlaced.\
497 * - encoding: set by user\
498 * - decoding: set by lavc (default 0)\
499 */\
500 int interlaced_frame;\
501 \
502 /**\
503 * if the content is interlaced, is top field displayed first.\
504 * - encoding: set by user\
505 * - decoding: set by lavc\
506 */\
507 int top_field_first;\
508 \
509 /**\
510 * Pan scan.\
511 * - encoding: set by user\
512 * - decoding: set by lavc\
513 */\
514 AVPanScan *pan_scan;\
515 \
516 /**\
517 * tell user application that palette has changed from previous frame.\
518 * - encoding: ??? (no palette-enabled encoder yet)\
519 * - decoding: set by lavc (default 0)\
520 */\
521 int palette_has_changed;\
522 \
523 /**\
524 * Codec suggestion on buffer type if != 0\
525 * - encoding: unused\
526 * - decoding: set by lavc (before get_buffer() call))\
527 */\
528 int buffer_hints;\
529
530 #define FF_QSCALE_TYPE_MPEG1 0
531 #define FF_QSCALE_TYPE_MPEG2 1
532
533 #define FF_BUFFER_TYPE_INTERNAL 1
534 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
535 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
536 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
537
538
539 #define FF_I_TYPE 1 // Intra
540 #define FF_P_TYPE 2 // Predicted
541 #define FF_B_TYPE 3 // Bi-dir predicted
542 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
543 #define FF_SI_TYPE 5
544 #define FF_SP_TYPE 6
545
546 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
547 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
548 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
549 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
550
551 /**
552 * Audio Video Frame.
553 */
554 typedef struct AVFrame {
555 FF_COMMON_FRAME
556 } AVFrame;
557
558 #define DEFAULT_FRAME_RATE_BASE 1001000
559
560 /**
561 * main external api structure.
562 */
563 typedef struct AVCodecContext {
564 /**
565 * the average bitrate.
566 * - encoding: set by user. unused for constant quantizer encoding
567 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
568 */
569 int bit_rate;
570
571 /**
572 * number of bits the bitstream is allowed to diverge from the reference.
573 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
574 * - encoding: set by user. unused for constant quantizer encoding
575 * - decoding: unused
576 */
577 int bit_rate_tolerance;
578
579 /**
580 * CODEC_FLAG_*.
581 * - encoding: set by user.
582 * - decoding: set by user.
583 */
584 int flags;
585
586 /**
587 * some codecs needs additionnal format info. It is stored here
588 * - encoding: set by user.
589 * - decoding: set by lavc. (FIXME is this ok?)
590 */
591 int sub_id;
592
593 /**
594 * motion estimation algorithm used for video coding.
595 * - encoding: MUST be set by user.
596 * - decoding: unused
597 */
598 int me_method;
599
600 /**
601 * some codecs need / can use extra-data like huffman tables.
602 * mjpeg: huffman tables
603 * rv10: additional flags
604 * mpeg4: global headers (they can be in the bitstream or here)
605 * - encoding: set/allocated/freed by lavc.
606 * - decoding: set/allocated/freed by user.
607 */
608 void *extradata;
609 int extradata_size;
610
611 /* video only */
612 /**
613 * frames per sec multiplied by frame_rate_base.
614 * for variable fps this is the precission, so if the timestamps
615 * can be specified in msec precssion then this is 1000*frame_rate_base
616 * - encoding: MUST be set by user
617 * - decoding: set by lavc. 0 or the frame_rate if available
618 */
619 int frame_rate;
620
621 /**
622 * width / height.
623 * - encoding: MUST be set by user.
624 * - decoding: set by user if known, codec should override / dynamically change if needed
625 */
626 int width, height;
627
628 #define FF_ASPECT_SQUARE 1
629 #define FF_ASPECT_4_3_625 2
630 #define FF_ASPECT_4_3_525 3
631 #define FF_ASPECT_16_9_625 4
632 #define FF_ASPECT_16_9_525 5
633 #define FF_ASPECT_EXTENDED 15
634
635 /**
636 * the number of pictures in a group of pitures, or 0 for intra_only.
637 * - encoding: set by user.
638 * - decoding: unused
639 */
640 int gop_size;
641
642 /**
643 * pixel format, see PIX_FMT_xxx.
644 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
645 * conversion is in order. This only works for
646 * codecs with one supported pix_fmt, we should
647 * do something for a generic case as well.
648 * - decoding: set by lavc.
649 */
650 enum PixelFormat pix_fmt;
651
652 /**
653 * Frame rate emulation. If not zero lower layer (i.e. format handler)
654 * has to read frames at native frame rate.
655 * - encoding: set by user.
656 * - decoding: unused.
657 */
658 int rate_emu;
659
660 /**
661 * if non NULL, 'draw_horiz_band' is called by the libavcodec
662 * decoder to draw an horizontal band. It improve cache usage. Not
663 * all codecs can do that. You must check the codec capabilities
664 * before
665 * - encoding: unused
666 * - decoding: set by user.
667 * @param height the height of the slice
668 * @param y the y position of the slice
669 * @param type 1->top field, 2->bottom field, 3->frame
670 * @param offset offset into the AVFrame.data from which the slice should be read
671 */
672 void (*draw_horiz_band)(struct AVCodecContext *s,
673 const AVFrame *src, int offset[4],
674 int y, int type, int height);
675
676 /* audio only */
677 int sample_rate; ///< samples per sec
678 int channels;
679 int sample_fmt; ///< sample format, currenly unused
680
681 /* the following data should not be initialized */
682 int frame_size; ///< in samples, initialized when calling 'init'
683 int frame_number; ///< audio or video frame number
684 int real_pict_num; ///< returns the real picture number of previous encoded frame
685
686 /**
687 * number of frames the decoded output will be delayed relative to
688 * the encoded input.
689 * - encoding: set by lavc.
690 * - decoding: unused
691 */
692 int delay;
693
694 /* - encoding parameters */
695 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
696 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
697
698 /**
699 * minimum quantizer.
700 * - encoding: set by user.
701 * - decoding: unused
702 */
703 int qmin;
704
705 /**
706 * maximum quantizer.
707 * - encoding: set by user.
708 * - decoding: unused
709 */
710 int qmax;
711
712 /**
713 * maximum quantizer difference etween frames.
714 * - encoding: set by user.
715 * - decoding: unused
716 */
717 int max_qdiff;
718
719 /**
720 * maximum number of b frames between non b frames.
721 * note: the output will be delayed by max_b_frames+1 relative to the input
722 * - encoding: set by user.
723 * - decoding: unused
724 */
725 int max_b_frames;
726
727 /**
728 * qscale factor between ip and b frames.
729 * - encoding: set by user.
730 * - decoding: unused
731 */
732 float b_quant_factor;
733
734 /** obsolete FIXME remove */
735 int rc_strategy;
736 int b_frame_strategy;
737
738 /**
739 * hurry up amount.
740 * - encoding: unused
741 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
742 */
743 int hurry_up;
744
745 struct AVCodec *codec;
746
747 void *priv_data;
748
749 /* unused, FIXME remove*/
750 int rtp_mode;
751
752 int rtp_payload_size; /* The size of the RTP payload, the coder will */
753 /* do it's best to deliver a chunk with size */
754 /* below rtp_payload_size, the chunk will start */
755 /* with a start code on some codecs like H.263 */
756 /* This doesn't take account of any particular */
757 /* headers inside the transmited RTP payload */
758
759
760 /* The RTP callcack: This function is called */
761 /* every time the encoder as a packet to send */
762 /* Depends on the encoder if the data starts */
763 /* with a Start Code (it should) H.263 does */
764 void (*rtp_callback)(void *data, int size, int packet_number);
765
766 /* statistics, used for 2-pass encoding */
767 int mv_bits;
768 int header_bits;
769 int i_tex_bits;
770 int p_tex_bits;
771 int i_count;
772 int p_count;
773 int skip_count;
774 int misc_bits;
775
776 /**
777 * number of bits used for the previously encoded frame.
778 * - encoding: set by lavc
779 * - decoding: unused
780 */
781 int frame_bits;
782
783 /**
784 * private data of the user, can be used to carry app specific stuff.
785 * - encoding: set by user
786 * - decoding: set by user
787 */
788 void *opaque;
789
790 char codec_name[32];
791 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
792 enum CodecID codec_id; /* see CODEC_ID_xxx */
793
794 /**
795 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
796 * this is used to workaround some encoder bugs
797 * - encoding: set by user, if not then the default based on codec_id will be used
798 * - decoding: set by user, will be converted to upper case by lavc during init
799 */
800 unsigned int codec_tag;
801
802 /**
803 * workaround bugs in encoders which sometimes cannot be detected automatically.
804 * - encoding: unused
805 * - decoding: set by user
806 */
807 int workaround_bugs;
808 #define FF_BUG_AUTODETECT 1 ///< autodetection
809 #define FF_BUG_OLD_MSMPEG4 2
810 #define FF_BUG_XVID_ILACE 4
811 #define FF_BUG_UMP4 8
812 #define FF_BUG_NO_PADDING 16
813 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
814 #define FF_BUG_QPEL_CHROMA 64
815 #define FF_BUG_STD_QPEL 128
816 #define FF_BUG_QPEL_CHROMA2 256
817 #define FF_BUG_DIRECT_BLOCKSIZE 512
818 #define FF_BUG_EDGE 1024
819 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
820
821 /**
822 * luma single coeff elimination threshold.
823 * - encoding: set by user
824 * - decoding: unused
825 */
826 int luma_elim_threshold;
827
828 /**
829 * chroma single coeff elimination threshold.
830 * - encoding: set by user
831 * - decoding: unused
832 */
833 int chroma_elim_threshold;
834
835 /**
836 * strictly follow the std (MPEG4, ...).
837 * - encoding: set by user
838 * - decoding: unused
839 */
840 int strict_std_compliance;
841
842 /**
843 * qscale offset between ip and b frames.
844 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
845 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
846 * - encoding: set by user.
847 * - decoding: unused
848 */
849 float b_quant_offset;
850
851 /**
852 * error resilience higher values will detect more errors but may missdetect
853 * some more or less valid parts as errors.
854 * - encoding: unused
855 * - decoding: set by user
856 */
857 int error_resilience;
858 #define FF_ER_CAREFULL 1
859 #define FF_ER_COMPLIANT 2
860 #define FF_ER_AGGRESSIVE 3
861 #define FF_ER_VERY_AGGRESSIVE 4
862
863 /**
864 * called at the beginning of each frame to get a buffer for it.
865 * if pic.reference is set then the frame will be read later by lavc
866 * width and height should be rounded up to the next multiple of 16
867 * - encoding: unused
868 * - decoding: set by lavc, user can override
869 */
870 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
871
872 /**
873 * called to release buffers which where allocated with get_buffer.
874 * a released buffer can be reused in get_buffer()
875 * pic.data[*] must be set to NULL
876 * - encoding: unused
877 * - decoding: set by lavc, user can override
878 */
879 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
880
881 /**
882 * is 1 if the decoded stream contains b frames, 0 otherwise.
883 * - encoding: unused
884 * - decoding: set by lavc
885 */
886 int has_b_frames;
887
888 int block_align; ///< used by some WAV based audio codecs
889
890 int parse_only; /* - decoding only: if true, only parsing is done
891 (function avcodec_parse_frame()). The frame
892 data is returned. Only MPEG codecs support this now. */
893
894 /**
895 * 0-> h263 quant 1-> mpeg quant.
896 * - encoding: set by user.
897 * - decoding: unused
898 */
899 int mpeg_quant;
900
901 /**
902 * pass1 encoding statistics output buffer.
903 * - encoding: set by lavc
904 * - decoding: unused
905 */
906 char *stats_out;
907
908 /**
909 * pass2 encoding statistics input buffer.
910 * concatenated stuff from stats_out of pass1 should be placed here
911 * - encoding: allocated/set/freed by user
912 * - decoding: unused
913 */
914 char *stats_in;
915
916 /**
917 * ratecontrol qmin qmax limiting method.
918 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
919 * - encoding: set by user.
920 * - decoding: unused
921 */
922 float rc_qsquish;
923
924 float rc_qmod_amp;
925 int rc_qmod_freq;
926
927 /**
928 * ratecontrol override, see RcOverride.
929 * - encoding: allocated/set/freed by user.
930 * - decoding: unused
931 */
932 RcOverride *rc_override;
933 int rc_override_count;
934
935 /**
936 * rate control equation.
937 * - encoding: set by user
938 * - decoding: unused
939 */
940 char *rc_eq;
941
942 /**
943 * maximum bitrate.
944 * - encoding: set by user.
945 * - decoding: unused
946 */
947 int rc_max_rate;
948
949 /**
950 * minimum bitrate.
951 * - encoding: set by user.
952 * - decoding: unused
953 */
954 int rc_min_rate;
955
956 /**
957 * decoder bitstream buffer size.
958 * - encoding: set by user.
959 * - decoding: unused
960 */
961 int rc_buffer_size;
962 float rc_buffer_aggressivity;
963
964 /**
965 * qscale factor between p and i frames.
966 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
967 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
968 * - encoding: set by user.
969 * - decoding: unused
970 */
971 float i_quant_factor;
972
973 /**
974 * qscale offset between p and i frames.
975 * - encoding: set by user.
976 * - decoding: unused
977 */
978 float i_quant_offset;
979
980 /**
981 * initial complexity for pass1 ratecontrol.
982 * - encoding: set by user.
983 * - decoding: unused
984 */
985 float rc_initial_cplx;
986
987 /**
988 * dct algorithm, see FF_DCT_* below.
989 * - encoding: set by user
990 * - decoding: unused
991 */
992 int dct_algo;
993 #define FF_DCT_AUTO 0
994 #define FF_DCT_FASTINT 1
995 #define FF_DCT_INT 2
996 #define FF_DCT_MMX 3
997 #define FF_DCT_MLIB 4
998 #define FF_DCT_ALTIVEC 5
999 #define FF_DCT_FAAN 6
1000
1001 /**
1002 * luminance masking (0-> disabled).
1003 * - encoding: set by user
1004 * - decoding: unused
1005 */
1006 float lumi_masking;
1007
1008 /**
1009 * temporary complexity masking (0-> disabled).
1010 * - encoding: set by user
1011 * - decoding: unused
1012 */
1013 float temporal_cplx_masking;
1014
1015 /**
1016 * spatial complexity masking (0-> disabled).
1017 * - encoding: set by user
1018 * - decoding: unused
1019 */
1020 float spatial_cplx_masking;
1021
1022 /**
1023 * p block masking (0-> disabled).
1024 * - encoding: set by user
1025 * - decoding: unused
1026 */
1027 float p_masking;
1028
1029 /**
1030 * darkness masking (0-> disabled).
1031 * - encoding: set by user
1032 * - decoding: unused
1033 */
1034 float dark_masking;
1035
1036
1037 /* for binary compatibility */
1038 int unused;
1039
1040 /**
1041 * idct algorithm, see FF_IDCT_* below.
1042 * - encoding: set by user
1043 * - decoding: set by user
1044 */
1045 int idct_algo;
1046 #define FF_IDCT_AUTO 0
1047 #define FF_IDCT_INT 1
1048 #define FF_IDCT_SIMPLE 2
1049 #define FF_IDCT_SIMPLEMMX 3
1050 #define FF_IDCT_LIBMPEG2MMX 4
1051 #define FF_IDCT_PS2 5
1052 #define FF_IDCT_MLIB 6
1053 #define FF_IDCT_ARM 7
1054 #define FF_IDCT_ALTIVEC 8
1055 #define FF_IDCT_SH4 9
1056 #define FF_IDCT_SIMPLEARM 10
1057
1058 /**
1059 * slice count.
1060 * - encoding: set by lavc
1061 * - decoding: set by user (or 0)
1062 */
1063 int slice_count;
1064 /**
1065 * slice offsets in the frame in bytes.
1066 * - encoding: set/allocated by lavc
1067 * - decoding: set/allocated by user (or NULL)
1068 */
1069 int *slice_offset;
1070
1071 /**
1072 * error concealment flags.
1073 * - encoding: unused
1074 * - decoding: set by user
1075 */
1076 int error_concealment;
1077 #define FF_EC_GUESS_MVS 1
1078 #define FF_EC_DEBLOCK 2
1079
1080 /**
1081 * dsp_mask could be add used to disable unwanted CPU features
1082 * CPU features (i.e. MMX, SSE. ...)
1083 *
1084 * with FORCE flag you may instead enable given CPU features
1085 * (Dangerous: usable in case of misdetection, improper usage however will
1086 * result into program crash)
1087 */
1088 unsigned dsp_mask;
1089 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1090 /* lower 16 bits - CPU features */
1091 #ifdef HAVE_MMX
1092 #define FF_MM_MMX 0x0001 /* standard MMX */
1093 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1094 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1095 #define FF_MM_SSE 0x0008 /* SSE functions */
1096 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1097 #endif /* HAVE_MMX */
1098
1099 /**
1100 * bits per sample/pixel from the demuxer (needed for huffyuv).
1101 * - encoding: set by lavc
1102 * - decoding: set by user
1103 */
1104 int bits_per_sample;
1105
1106 /**
1107 * prediction method (needed for huffyuv).
1108 * - encoding: set by user
1109 * - decoding: unused
1110 */
1111 int prediction_method;
1112 #define FF_PRED_LEFT 0
1113 #define FF_PRED_PLANE 1
1114 #define FF_PRED_MEDIAN 2
1115
1116 /**
1117 * sample aspect ratio (0 if unknown).
1118 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1119 * - encoding: set by user.
1120 * - decoding: set by lavc.
1121 */
1122 AVRational sample_aspect_ratio;
1123
1124 /**
1125 * the picture in the bitstream.
1126 * - encoding: set by lavc
1127 * - decoding: set by lavc
1128 */
1129 AVFrame *coded_frame;
1130
1131 /**
1132 * debug.
1133 * - encoding: set by user.
1134 * - decoding: set by user.
1135 */
1136 int debug;
1137 #define FF_DEBUG_PICT_INFO 1
1138 #define FF_DEBUG_RC 2
1139 #define FF_DEBUG_BITSTREAM 4
1140 #define FF_DEBUG_MB_TYPE 8
1141 #define FF_DEBUG_QP 16
1142 #define FF_DEBUG_MV 32
1143 //#define FF_DEBUG_VIS_MV 0x00000040
1144 #define FF_DEBUG_SKIP 0x00000080
1145 #define FF_DEBUG_STARTCODE 0x00000100
1146 #define FF_DEBUG_PTS 0x00000200
1147 #define FF_DEBUG_ER 0x00000400
1148 #define FF_DEBUG_MMCO 0x00000800
1149 #define FF_DEBUG_BUGS 0x00001000
1150 #define FF_DEBUG_VIS_QP 0x00002000
1151 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1152
1153 /**
1154 * debug.
1155 * - encoding: set by user.
1156 * - decoding: set by user.
1157 */
1158 int debug_mv;
1159 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1160 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1161 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1162
1163 /**
1164 * error.
1165 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1166 * - decoding: unused
1167 */
1168 uint64_t error[4];
1169
1170 /**
1171 * minimum MB quantizer.
1172 * - encoding: set by user.
1173 * - decoding: unused
1174 */
1175 int mb_qmin;
1176
1177 /**
1178 * maximum MB quantizer.
1179 * - encoding: set by user.
1180 * - decoding: unused
1181 */
1182 int mb_qmax;
1183
1184 /**
1185 * motion estimation compare function.
1186 * - encoding: set by user.
1187 * - decoding: unused
1188 */
1189 int me_cmp;
1190 /**
1191 * subpixel motion estimation compare function.
1192 * - encoding: set by user.
1193 * - decoding: unused
1194 */
1195 int me_sub_cmp;
1196 /**
1197 * macroblock compare function (not supported yet).
1198 * - encoding: set by user.
1199 * - decoding: unused
1200 */
1201 int mb_cmp;
1202 /**
1203 * interlaced dct compare function
1204 * - encoding: set by user.
1205 * - decoding: unused
1206 */
1207 int ildct_cmp;
1208 #define FF_CMP_SAD 0
1209 #define FF_CMP_SSE 1
1210 #define FF_CMP_SATD 2
1211 #define FF_CMP_DCT 3
1212 #define FF_CMP_PSNR 4
1213 #define FF_CMP_BIT 5
1214 #define FF_CMP_RD 6
1215 #define FF_CMP_ZERO 7
1216 #define FF_CMP_VSAD 8
1217 #define FF_CMP_VSSE 9
1218 #define FF_CMP_CHROMA 256
1219
1220 /**
1221 * ME diamond size & shape.
1222 * - encoding: set by user.
1223 * - decoding: unused
1224 */
1225 int dia_size;
1226
1227 /**
1228 * amount of previous MV predictors (2a+1 x 2a+1 square).
1229 * - encoding: set by user.
1230 * - decoding: unused
1231 */
1232 int last_predictor_count;
1233
1234 /**
1235 * pre pass for motion estimation.
1236 * - encoding: set by user.
1237 * - decoding: unused
1238 */
1239 int pre_me;
1240
1241 /**
1242 * motion estimation pre pass compare function.
1243 * - encoding: set by user.
1244 * - decoding: unused
1245 */
1246 int me_pre_cmp;
1247
1248 /**
1249 * ME pre pass diamond size & shape.
1250 * - encoding: set by user.
1251 * - decoding: unused
1252 */
1253 int pre_dia_size;
1254
1255 /**
1256 * subpel ME quality.
1257 * - encoding: set by user.
1258 * - decoding: unused
1259 */
1260 int me_subpel_quality;
1261
1262 /**
1263 * callback to negotiate the pixelFormat.
1264 * @param fmt is the list of formats which are supported by the codec,
1265 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1266 * the first is allways the native one
1267 * @return the choosen format
1268 * - encoding: unused
1269 * - decoding: set by user, if not set then the native format will always be choosen
1270 */
1271 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1272
1273 /**
1274 * DTG active format information (additionnal aspect ratio
1275 * information only used in DVB MPEG2 transport streams). 0 if
1276 * not set.
1277 *
1278 * - encoding: unused.
1279 * - decoding: set by decoder
1280 */
1281 int dtg_active_format;
1282 #define FF_DTG_AFD_SAME 8
1283 #define FF_DTG_AFD_4_3 9
1284 #define FF_DTG_AFD_16_9 10
1285 #define FF_DTG_AFD_14_9 11
1286 #define FF_DTG_AFD_4_3_SP_14_9 13
1287 #define FF_DTG_AFD_16_9_SP_14_9 14
1288 #define FF_DTG_AFD_SP_4_3 15
1289
1290 /**
1291 * Maximum motion estimation search range in subpel units.
1292 * if 0 then no limit
1293 *
1294 * - encoding: set by user.
1295 * - decoding: unused.
1296 */
1297 int me_range;
1298
1299 /**
1300 * frame_rate_base.
1301 * for variable fps this is 1
1302 * - encoding: set by user.
1303 * - decoding: set by lavc.
1304 * @todo move this after frame_rate
1305 */
1306
1307 int frame_rate_base;
1308 /**
1309 * intra quantizer bias.
1310 * - encoding: set by user.
1311 * - decoding: unused
1312 */
1313 int intra_quant_bias;
1314 #define FF_DEFAULT_QUANT_BIAS 999999
1315
1316 /**
1317 * inter quantizer bias.
1318 * - encoding: set by user.
1319 * - decoding: unused
1320 */
1321 int inter_quant_bias;
1322
1323 /**
1324 * color table ID.
1325 * - encoding: unused.
1326 * - decoding: which clrtable should be used for 8bit RGB images
1327 * table have to be stored somewhere FIXME
1328 */
1329 int color_table_id;
1330
1331 /**
1332 * internal_buffer count.
1333 * Dont touch, used by lavc default_get_buffer()
1334 */
1335 int internal_buffer_count;
1336
1337 /**
1338 * internal_buffers.
1339 * Dont touch, used by lavc default_get_buffer()
1340 */
1341 void *internal_buffer;
1342
1343 #define FF_LAMBDA_SHIFT 7
1344 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1345 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1346 #define FF_LAMBDA_MAX (256*128-1)
1347
1348 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1349 /**
1350 * global quality for codecs which cannot change it per frame.
1351 * this should be proportional to MPEG1/2/4 qscale.
1352 * - encoding: set by user.
1353 * - decoding: unused
1354 */
1355 int global_quality;
1356
1357 #define FF_CODER_TYPE_VLC 0
1358 #define FF_CODER_TYPE_AC 1
1359 /**
1360 * coder type
1361 * - encoding: set by user.
1362 * - decoding: unused
1363 */
1364 int coder_type;
1365
1366 /**
1367 * context model
1368 * - encoding: set by user.
1369 * - decoding: unused
1370 */
1371 int context_model;
1372
1373 /**
1374 * slice flags
1375 * - encoding: unused
1376 * - decoding: set by user.
1377 */
1378 int slice_flags;
1379 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1380 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1381 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1382
1383 /**
1384 * XVideo Motion Acceleration
1385 * - encoding: forbidden
1386 * - decoding: set by decoder
1387 */
1388 int xvmc_acceleration;
1389
1390 /**
1391 * macroblock decision mode
1392 * - encoding: set by user.
1393 * - decoding: unused
1394 */
1395 int mb_decision;
1396 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1397 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1398 #define FF_MB_DECISION_RD 2 ///< rate distoration
1399
1400 /**
1401 * custom intra quantization matrix
1402 * - encoding: set by user, can be NULL
1403 * - decoding: set by lavc
1404 */
1405 uint16_t *intra_matrix;
1406
1407 /**
1408 * custom inter quantization matrix
1409 * - encoding: set by user, can be NULL
1410 * - decoding: set by lavc
1411 */
1412 uint16_t *inter_matrix;
1413
1414 /**
1415 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1416 * this is used to workaround some encoder bugs
1417 * - encoding: unused
1418 * - decoding: set by user, will be converted to upper case by lavc during init
1419 */
1420 unsigned int stream_codec_tag;
1421
1422 /**
1423 * scene change detection threshold.
1424 * 0 is default, larger means fewer detected scene changes
1425 * - encoding: set by user.
1426 * - decoding: unused
1427 */
1428 int scenechange_threshold;
1429
1430 /**
1431 * minimum lagrange multipler
1432 * - encoding: set by user.
1433 * - decoding: unused
1434 */
1435 int lmin;
1436
1437 /**
1438 * maximum lagrange multipler
1439 * - encoding: set by user.
1440 * - decoding: unused
1441 */
1442 int lmax;
1443
1444 /**
1445 * Palette control structure
1446 * - encoding: ??? (no palette-enabled encoder yet)
1447 * - decoding: set by user.
1448 */
1449 struct AVPaletteControl *palctrl;
1450
1451 /**
1452 * noise reduction strength
1453 * - encoding: set by user.
1454 * - decoding: unused
1455 */
1456 int noise_reduction;
1457
1458 /**
1459 * called at the beginning of a frame to get cr buffer for it.
1460 * buffer type (size, hints) must be the same. lavc won't check it.
1461 * lavc will pass previous buffer in pic, function should return
1462 * same buffer or new buffer with old frame "painted" into it.
1463 * if pic.data[0] == NULL must behave like get_buffer().
1464 * - encoding: unused
1465 * - decoding: set by lavc, user can override
1466 */
1467 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1468
1469 /**
1470 * number of bits which should be loaded into the rc buffer before decoding starts
1471 * - encoding: set by user.
1472 * - decoding: unused
1473 */
1474 int rc_initial_buffer_occupancy;
1475
1476 /**
1477 *
1478 * - encoding: set by user.
1479 * - decoding: unused
1480 */
1481 int inter_threshold;
1482
1483 /**
1484 * CODEC_FLAG2_*.
1485 * - encoding: set by user.
1486 * - decoding: set by user.
1487 */
1488 int flags2;
1489
1490 /**
1491 * simulates errors in the bitstream to test error concealment.
1492 * - encoding: set by user.
1493 * - decoding: unused.
1494 */
1495 int error_rate;
1496
1497 /**
1498 * MP3 antialias algorithm, see FF_AA_* below.
1499 * - encoding: unused
1500 * - decoding: set by user
1501 */
1502 int antialias_algo;
1503 #define FF_AA_AUTO 0
1504 #define FF_AA_FASTINT 1 //not implemented yet
1505 #define FF_AA_INT 2
1506 #define FF_AA_FLOAT 3
1507 /**
1508 * Quantizer noise shaping.
1509 * - encoding: set by user
1510 * - decoding: unused
1511 */
1512 int quantizer_noise_shaping;
1513 } AVCodecContext;
1514
1515
1516 /**
1517 * AVOption.
1518 */
1519 typedef struct AVOption {
1520 /** options' name */
1521 const char *name; /* if name is NULL, it indicates a link to next */
1522 /** short English text help or const struct AVOption* subpointer */
1523 const char *help; // const struct AVOption* sub;
1524 /** offset to context structure where the parsed value should be stored */
1525 int offset;
1526 /** options' type */
1527 int type;
1528 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1529 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1530 #define FF_OPT_TYPE_INT 3 ///< integer
1531 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1532 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1533 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1534 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1535 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1536 /** min value (min == max -> no limits) */
1537 double min;
1538 /** maximum value for double/int */
1539 double max;
1540 /** default boo [0,1]l/double/int value */
1541 double defval;
1542 /**
1543 * default string value (with optional semicolon delimited extra option-list
1544 * i.e. option1;option2;option3
1545 * defval might select other then first argument as default
1546 */
1547 const char *defstr;
1548 #define FF_OPT_MAX_DEPTH 10
1549 } AVOption;
1550
1551 /**
1552 * Parse option(s) and sets fields in passed structure
1553 * @param strct structure where the parsed results will be written
1554 * @param list list with AVOptions
1555 * @param opts string with options for parsing
1556 */
1557 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1558
1559
1560 /**
1561 * AVCodec.
1562 */
1563 typedef struct AVCodec {
1564 const char *name;
1565 enum CodecType type;
1566 int id;
1567 int priv_data_size;
1568 int (*init)(AVCodecContext *);
1569 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1570 int (*close)(AVCodecContext *);
1571 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1572 uint8_t *buf, int buf_size);
1573 int capabilities;
1574 const AVOption *options;
1575 struct AVCodec *next;
1576 void (*flush)(AVCodecContext *);
1577 } AVCodec;
1578
1579 /**
1580 * four components are given, that's all.
1581 * the last component is alpha
1582 */
1583 typedef struct AVPicture {
1584 uint8_t *data[4];
1585 int linesize[4]; ///< number of bytes per line
1586 } AVPicture;
1587
1588 /**
1589 * AVPaletteControl
1590 * This structure defines a method for communicating palette changes
1591 * between and demuxer and a decoder.
1592 */
1593 #define AVPALETTE_SIZE 1024
1594 #define AVPALETTE_COUNT 256
1595 typedef struct AVPaletteControl {
1596
1597 /* demuxer sets this to 1 to indicate the palette has changed;
1598 * decoder resets to 0 */
1599 int palette_changed;
1600
1601 /* 4-byte ARGB palette entries, stored in native byte order; note that
1602 * the individual palette components should be on a 8-bit scale; if
1603 * the palette data comes from a IBM VGA native format, the component
1604 * data is probably 6 bits in size and needs to be scaled */
1605 unsigned int palette[AVPALETTE_COUNT];
1606
1607 } AVPaletteControl;
1608
1609 extern AVCodec ac3_encoder;
1610 extern AVCodec mp2_encoder;
1611 extern AVCodec mp3lame_encoder;
1612 extern AVCodec oggvorbis_encoder;
1613 extern AVCodec faac_encoder;
1614 extern AVCodec mpeg1video_encoder;
1615 extern AVCodec mpeg2video_encoder;
1616 extern AVCodec h263_encoder;
1617 extern AVCodec h263p_encoder;
1618 extern AVCodec flv_encoder;
1619 extern AVCodec rv10_encoder;
1620 extern AVCodec rv20_encoder;
1621 extern AVCodec mjpeg_encoder;
1622 extern AVCodec ljpeg_encoder;
1623 extern AVCodec mpeg4_encoder;
1624 extern AVCodec msmpeg4v1_encoder;
1625 extern AVCodec msmpeg4v2_encoder;
1626 extern AVCodec msmpeg4v3_encoder;
1627 extern AVCodec wmv1_encoder;
1628 extern AVCodec wmv2_encoder;
1629 extern AVCodec huffyuv_encoder;
1630 extern AVCodec h264_encoder;
1631 extern AVCodec asv1_encoder;
1632 extern AVCodec asv2_encoder;
1633 extern AVCodec vcr1_encoder;
1634 extern AVCodec ffv1_encoder;
1635 extern AVCodec mdec_encoder;
1636 extern AVCodec zlib_encoder;
1637
1638 extern AVCodec h263_decoder;
1639 extern AVCodec mpeg4_decoder;
1640 extern AVCodec msmpeg4v1_decoder;
1641 extern AVCodec msmpeg4v2_decoder;
1642 extern AVCodec msmpeg4v3_decoder;
1643 extern AVCodec wmv1_decoder;
1644 extern AVCodec wmv2_decoder;
1645 extern AVCodec mpeg1video_decoder;
1646 extern AVCodec mpeg2video_decoder;
1647 extern AVCodec mpegvideo_decoder;
1648 extern AVCodec mpeg_xvmc_decoder;
1649 extern AVCodec h263i_decoder;
1650 extern AVCodec flv_decoder;
1651 extern AVCodec rv10_decoder;
1652 extern AVCodec rv20_decoder;
1653 extern AVCodec svq1_decoder;
1654 extern AVCodec svq3_decoder;
1655 extern AVCodec dvvideo_decoder;
1656 extern AVCodec wmav1_decoder;
1657 extern AVCodec wmav2_decoder;
1658 extern AVCodec mjpeg_decoder;
1659 extern AVCodec mjpegb_decoder;
1660 extern AVCodec sp5x_decoder;
1661 extern AVCodec mp2_decoder;
1662 extern AVCodec mp3_decoder;
1663 extern AVCodec mace3_decoder;
1664 extern AVCodec mace6_decoder;
1665 extern AVCodec huffyuv_decoder;
1666 extern AVCodec oggvorbis_decoder;
1667 extern AVCodec cyuv_decoder;
1668 extern AVCodec h264_decoder;
1669 extern AVCodec indeo3_decoder;
1670 extern AVCodec vp3_decoder;
1671 extern AVCodec theora_decoder;
1672 extern AVCodec amr_nb_decoder;
1673 extern AVCodec amr_nb_encoder;
1674 extern AVCodec amr_wb_encoder;
1675 extern AVCodec amr_wb_decoder;
1676 extern AVCodec aac_decoder;
1677 extern AVCodec mpeg4aac_decoder;
1678 extern AVCodec asv1_decoder;
1679 extern AVCodec asv2_decoder;
1680 extern AVCodec vcr1_decoder;
1681 extern AVCodec cljr_decoder;
1682 extern AVCodec ffv1_decoder;
1683 extern AVCodec fourxm_decoder;
1684 extern AVCodec mdec_decoder;
1685 extern AVCodec roq_decoder;
1686 extern AVCodec interplay_video_decoder;
1687 extern AVCodec xan_wc3_decoder;
1688 extern AVCodec rpza_decoder;
1689 extern AVCodec cinepak_decoder;
1690 extern AVCodec msrle_decoder;
1691 extern AVCodec msvideo1_decoder;
1692 extern AVCodec vqa_decoder;
1693 extern AVCodec idcin_decoder;
1694 extern AVCodec eightbps_decoder;
1695 extern AVCodec smc_decoder;
1696 extern AVCodec flic_decoder;
1697 extern AVCodec vmdvideo_decoder;
1698 extern AVCodec vmdaudio_decoder;
1699 extern AVCodec truemotion1_decoder;
1700 extern AVCodec mszh_decoder;
1701 extern AVCodec zlib_decoder;
1702 extern AVCodec ra_144_decoder;
1703 extern AVCodec ra_288_decoder;
1704 extern AVCodec roq_dpcm_decoder;
1705 extern AVCodec interplay_dpcm_decoder;
1706 extern AVCodec xan_dpcm_decoder;
1707
1708 /* pcm codecs */
1709 #define PCM_CODEC(id, name) \
1710 extern AVCodec name ## _decoder; \
1711 extern AVCodec name ## _encoder
1712
1713 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1714 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1715 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1716 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1717 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1718 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1719 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1720 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1721
1722 /* adpcm codecs */
1723
1724 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1725 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1726 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1727 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1728 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1729 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1730 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1731 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1732 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1733
1734 #undef PCM_CODEC
1735
1736 /* dummy raw video codec */
1737 extern AVCodec rawvideo_encoder;
1738 extern AVCodec rawvideo_decoder;
1739
1740 /* the following codecs use external GPL libs */
1741 extern AVCodec ac3_decoder;
1742
1743 /* resample.c */
1744
1745 struct ReSampleContext;
1746
1747 typedef struct ReSampleContext ReSampleContext;
1748
1749 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1750 int output_rate, int input_rate);
1751 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1752 void audio_resample_close(ReSampleContext *s);
1753
1754 /* YUV420 format is assumed ! */
1755
1756 struct ImgReSampleContext;
1757
1758 typedef struct ImgReSampleContext ImgReSampleContext;
1759
1760 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1761 int input_width, int input_height);
1762
1763 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1764 int iwidth, int iheight,
1765 int topBand, int bottomBand,
1766 int leftBand, int rightBand);
1767
1768 void img_resample(ImgReSampleContext *s,
1769 AVPicture *output, const AVPicture *input);
1770
1771 void img_resample_close(ImgReSampleContext *s);
1772
1773 /**
1774 * Allocate memory for a picture. Call avpicture_free to free it.
1775 *
1776 * @param picture the picture to be filled in.
1777 * @param pix_fmt the format of the picture.
1778 * @param width the width of the picture.
1779 * @param height the height of the picture.
1780 * @return 0 if successful, -1 if not.
1781 */
1782 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1783
1784 /* Free a picture previously allocated by avpicture_alloc. */
1785 void avpicture_free(AVPicture *picture);
1786
1787 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1788 int pix_fmt, int width, int height);
1789 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1790 unsigned char *dest, int dest_size);
1791 int avpicture_get_size(int pix_fmt, int width, int height);
1792 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1793 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1794 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1795
1796 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1797 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1798 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1799 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1800 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1801 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1802
1803 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1804 int has_alpha);
1805 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1806 int has_alpha, int *loss_ptr);
1807
1808 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1809 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1810 int img_get_alpha_info(const AVPicture *src,
1811 int pix_fmt, int width, int height);
1812
1813 /* convert among pixel formats */
1814 int img_convert(AVPicture *dst, int dst_pix_fmt,
1815 const AVPicture *src, int pix_fmt,
1816 int width, int height);
1817
1818 /* deinterlace a picture */
1819 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1820 int pix_fmt, int width, int height);
1821
1822 /* external high level API */
1823
1824 extern AVCodec *first_avcodec;
1825
1826 /* returns LIBAVCODEC_VERSION_INT constant */
1827 unsigned avcodec_version(void);
1828 /* returns LIBAVCODEC_BUILD constant */
1829 unsigned avcodec_build(void);
1830 void avcodec_init(void);
1831
1832 void register_avcodec(AVCodec *format);
1833 AVCodec *avcodec_find_encoder(enum CodecID id);
1834 AVCodec *avcodec_find_encoder_by_name(const char *name);
1835 AVCodec *avcodec_find_decoder(enum CodecID id);
1836 AVCodec *avcodec_find_decoder_by_name(const char *name);
1837 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1838
1839 void avcodec_get_context_defaults(AVCodecContext *s);
1840 AVCodecContext *avcodec_alloc_context(void);
1841 AVFrame *avcodec_alloc_frame(void);
1842
1843 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1844 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1845 void avcodec_default_free_buffers(AVCodecContext *s);
1846
1847 /**
1848 * opens / inits the AVCodecContext.
1849 * not thread save!
1850 */
1851 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1852
1853 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1854 int *frame_size_ptr,
1855 uint8_t *buf, int buf_size);
1856 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1857 int *got_picture_ptr,
1858 uint8_t *buf, int buf_size);
1859 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1860 int *data_size_ptr,
1861 uint8_t *buf, int buf_size);
1862 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1863 const short *samples);
1864 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1865 const AVFrame *pict);
1866
1867 int avcodec_close(AVCodecContext *avctx);
1868
1869 void avcodec_register_all(void);
1870
1871 void avcodec_flush_buffers(AVCodecContext *avctx);
1872
1873 /* misc usefull functions */
1874
1875 /**
1876 * returns a single letter to describe the picture type
1877 */
1878 char av_get_pict_type_char(int pict_type);
1879
1880 /**
1881 * reduce a fraction.
1882 * this is usefull for framerate calculations
1883 * @param max the maximum allowed for dst_nom & dst_den
1884 * @return 1 if exact, 0 otherwise
1885 */
1886 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1887
1888 /**
1889 * rescale a 64bit integer.
1890 * a simple a*b/c isnt possible as it can overflow
1891 */
1892 int64_t av_rescale(int64_t a, int b, int c);
1893
1894
1895 /**
1896 * Interface for 0.5.0 version
1897 *
1898 * do not even think about it's usage for this moment
1899 */
1900
1901 typedef struct {
1902 /// compressed size used from given memory buffer
1903 int size;
1904 /// I/P/B frame type
1905 int frame_type;
1906 } avc_enc_result_t;
1907
1908 /**
1909 * Commands
1910 * order can't be changed - once it was defined
1911 */
1912 typedef enum {
1913 // general commands
1914 AVC_OPEN_BY_NAME = 0xACA000,
1915 AVC_OPEN_BY_CODEC_ID,
1916 AVC_OPEN_BY_FOURCC,
1917 AVC_CLOSE,
1918
1919 AVC_FLUSH,
1920 // pin - struct { uint8_t* src, uint_t src_size }
1921 // pout - struct { AVPicture* img, consumed_bytes,
1922 AVC_DECODE,
1923 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1924 // pout - uint_t used_from_dest_size
1925 AVC_ENCODE,
1926
1927 // query/get video commands
1928 AVC_GET_VERSION = 0xACB000,
1929 AVC_GET_WIDTH,
1930 AVC_GET_HEIGHT,
1931 AVC_GET_DELAY,
1932 AVC_GET_QUANT_TABLE,
1933 // ...
1934
1935 // query/get audio commands
1936 AVC_GET_FRAME_SIZE = 0xABC000,
1937
1938 // maybe define some simple structure which
1939 // might be passed to the user - but they can't
1940 // contain any codec specific parts and these
1941 // calls are usualy necessary only few times
1942
1943 // set video commands
1944 AVC_SET_WIDTH = 0xACD000,
1945 AVC_SET_HEIGHT,
1946
1947 // set video encoding commands
1948 AVC_SET_FRAME_RATE = 0xACD800,
1949 AVC_SET_QUALITY,
1950 AVC_SET_HURRY_UP,
1951
1952 // set audio commands
1953 AVC_SET_SAMPLE_RATE = 0xACE000,
1954 AVC_SET_CHANNELS,
1955
1956 } avc_cmd_t;
1957
1958 /**
1959 * \param handle allocated private structure by libavcodec
1960 * for initialization pass NULL - will be returned pout
1961 * user is supposed to know nothing about its structure
1962 * \param cmd type of operation to be performed
1963 * \param pint input parameter
1964 * \param pout output parameter
1965 *
1966 * \returns command status - eventually for query command it might return
1967 * integer resulting value
1968 */
1969 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1970
1971 /* frame parsing */
1972 typedef struct AVCodecParserContext {
1973 void *priv_data;
1974 struct AVCodecParser *parser;
1975 int64_t frame_offset; /* offset of the current frame */
1976 int64_t cur_offset; /* current offset
1977 (incremented by each av_parser_parse()) */
1978 int64_t last_frame_offset; /* offset of the last frame */
1979 /* video info */
1980 int pict_type; /* XXX: put it back in AVCodecContext */
1981 int repeat_pict; /* XXX: put it back in AVCodecContext */
1982 int64_t pts; /* pts of the current frame */
1983 int64_t dts; /* dts of the current frame */
1984
1985 /* private data */
1986 int64_t last_pts;
1987 int64_t last_dts;
1988
1989 #define AV_PARSER_PTS_NB 4
1990 int cur_frame_start_index;
1991 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
1992 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
1993 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
1994 } AVCodecParserContext;
1995
1996 typedef struct AVCodecParser {
1997 int codec_ids[3]; /* several codec IDs are permitted */
1998 int priv_data_size;
1999 int (*parser_init)(AVCodecParserContext *s);
2000 int (*parser_parse)(AVCodecParserContext *s,
2001 AVCodecContext *avctx,
2002 uint8_t **poutbuf, int *poutbuf_size,
2003 const uint8_t *buf, int buf_size);
2004 void (*parser_close)(AVCodecParserContext *s);
2005 struct AVCodecParser *next;
2006 } AVCodecParser;
2007
2008 extern AVCodecParser *av_first_parser;
2009
2010 void av_register_codec_parser(AVCodecParser *parser);
2011 AVCodecParserContext *av_parser_init(int codec_id);
2012 int av_parser_parse(AVCodecParserContext *s,
2013 AVCodecContext *avctx,
2014 uint8_t **poutbuf, int *poutbuf_size,
2015 const uint8_t *buf, int buf_size,
2016 int64_t pts, int64_t dts);
2017 void av_parser_close(AVCodecParserContext *s);
2018
2019 extern AVCodecParser mpegvideo_parser;
2020 extern AVCodecParser mpeg4video_parser;
2021 extern AVCodecParser h263_parser;
2022 extern AVCodecParser h264_parser;
2023 extern AVCodecParser mpegaudio_parser;
2024 extern AVCodecParser ac3_parser;
2025
2026 /* memory */
2027 void *av_malloc(unsigned int size);
2028 void *av_mallocz(unsigned int size);
2029 void *av_realloc(void *ptr, unsigned int size);
2030 void av_free(void *ptr);
2031 char *av_strdup(const char *s);
2032 void __av_freep(void **ptr);
2033 #define av_freep(p) __av_freep((void **)(p))
2034 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2035 /* for static data only */
2036 /* call av_free_static to release all staticaly allocated tables */
2037 void av_free_static(void);
2038 void *__av_mallocz_static(void** location, unsigned int size);
2039 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2040
2041 /* add by bero : in adx.c */
2042 int is_adx(const unsigned char *buf,size_t bufsize);
2043
2044 void img_copy(AVPicture *dst, const AVPicture *src,
2045 int pix_fmt, int width, int height);
2046
2047 /* av_log API */
2048
2049 #include <stdarg.h>
2050
2051 #define AV_LOG_ERROR 0
2052 #define AV_LOG_INFO 1
2053 #define AV_LOG_DEBUG 2
2054
2055 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2056 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2057 extern int av_log_get_level(void);
2058 extern void av_log_set_level(int);
2059 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2060
2061 #undef AV_LOG_TRAP_PRINTF
2062 #ifdef AV_LOG_TRAP_PRINTF
2063 #define printf DO NOT USE
2064 #define fprintf DO NOT USE
2065 #undef stderr
2066 #define stderr DO NOT USE
2067 #endif
2068
2069 #ifdef __cplusplus
2070 }
2071 #endif
2072
2073 #endif /* AVCODEC_H */