added support for EA ADPCM and SMJPEG IMA ADPCM
[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_IMA_SMJPEG,
114 CODEC_ID_ADPCM_MS,
115 CODEC_ID_ADPCM_4XM,
116 CODEC_ID_ADPCM_XA,
117 CODEC_ID_ADPCM_ADX,
118 CODEC_ID_ADPCM_EA,
119
120 /* AMR */
121 CODEC_ID_AMR_NB,
122 CODEC_ID_AMR_WB,
123
124 /* RealAudio codecs*/
125 CODEC_ID_RA_144,
126 CODEC_ID_RA_288,
127
128 /* various DPCM codecs */
129 CODEC_ID_ROQ_DPCM,
130 CODEC_ID_INTERPLAY_DPCM,
131 CODEC_ID_XAN_DPCM,
132
133 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
134 stream (only used by libavformat) */
135 };
136
137 /* CODEC_ID_MP3LAME is absolete */
138 #define CODEC_ID_MP3LAME CODEC_ID_MP3
139
140 enum CodecType {
141 CODEC_TYPE_UNKNOWN = -1,
142 CODEC_TYPE_VIDEO,
143 CODEC_TYPE_AUDIO,
144 CODEC_TYPE_DATA,
145 };
146
147 /**
148 * Pixel format. Notes:
149 *
150 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
151 * color is put together as:
152 * (A << 24) | (R << 16) | (G << 8) | B
153 * This is stored as BGRA on little endian CPU architectures and ARGB on
154 * big endian CPUs.
155 *
156 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
157 * image data is stored in AVFrame.data[0]. The palette is transported in
158 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
159 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
160 * also endian-specific). Note also that the individual RGB palette
161 * components stored in AVFrame.data[1] should be in the range 0..255.
162 * This is important as many custom PAL8 video codecs that were designed
163 * to run on the IBM VGA graphics adapter use 6-bit palette components.
164 */
165 enum PixelFormat {
166 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
167 PIX_FMT_YUV422,
168 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
169 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
170 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
171 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
172 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
173 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
174 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
175 PIX_FMT_RGB565, ///< always stored in cpu endianness
176 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
177 PIX_FMT_GRAY8,
178 PIX_FMT_MONOWHITE, ///< 0 is white
179 PIX_FMT_MONOBLACK, ///< 0 is black
180 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
181 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
182 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
183 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
184 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
185 PIX_FMT_XVMC_MPEG2_IDCT,
186 PIX_FMT_NB,
187 };
188
189 /* currently unused, may be used if 24/32 bits samples ever supported */
190 enum SampleFormat {
191 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
192 };
193
194 /* in bytes */
195 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
196
197 /**
198 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
199 * this is mainly needed because some optimized bitstream readers read
200 * 32 or 64 bit at once and could read over the end<br>
201 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
202 * MPEG bitstreams could cause overread and segfault
203 */
204 #define FF_INPUT_BUFFER_PADDING_SIZE 8
205
206 /* motion estimation type, EPZS by default */
207 enum Motion_Est_ID {
208 ME_ZERO = 1,
209 ME_FULL,
210 ME_LOG,
211 ME_PHODS,
212 ME_EPZS,
213 ME_X1
214 };
215
216 typedef struct RcOverride{
217 int start_frame;
218 int end_frame;
219 int qscale; // if this is 0 then quality_factor will be used instead
220 float quality_factor;
221 } RcOverride;
222
223 /* only for ME compatiblity with old apps */
224 extern int motion_estimation_method;
225
226 /* ME algos sorted by quality */
227 //FIXME remove IMHO
228 static const __attribute__((unused)) int Motion_Est_QTab[] =
229 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
230
231
232 #define FF_MAX_B_FRAMES 8
233
234 /* encoding support
235 these flags can be passed in AVCodecContext.flags before initing
236 Note: note not everything is supported yet
237 */
238
239 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
240 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
241 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
242 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
243 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
244 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
245 /* parent program gurantees that the input for b-frame containing streams is not written to
246 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
247 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
248 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
249 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
250 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
251 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
252 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
253 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
254 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
255 of only at frame boundaries */
256 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
257 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
258 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
259 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
260 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
261 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
262 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
263 /* Fx : Flag for h263+ extra options */
264 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
265 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
266 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
267 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
268 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
269 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
270 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
271 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
272 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
273 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
274 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
275 #define CODEC_FLAG_CLOSED_GOP 0x80000000
276 /* Unsupported options :
277 * Syntax Arithmetic coding (SAC)
278 * Reference Picture Selection
279 * Independant Segment Decoding */
280 /* /Fx */
281 /* codec capabilities */
282
283 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
284 /**
285 * Codec uses get_buffer() for allocating buffers.
286 * direct rendering method 1
287 */
288 #define CODEC_CAP_DR1 0x0002
289 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
290 used */
291 #define CODEC_CAP_PARSE_ONLY 0x0004
292 #define CODEC_CAP_TRUNCATED 0x0008
293
294 //the following defines might change, so dont expect compatibility if u use them
295 #define MB_TYPE_INTRA4x4 0x0001
296 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
297 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
298 #define MB_TYPE_16x16 0x0008
299 #define MB_TYPE_16x8 0x0010
300 #define MB_TYPE_8x16 0x0020
301 #define MB_TYPE_8x8 0x0040
302 #define MB_TYPE_INTERLACED 0x0080
303 #define MB_TYPE_DIRECT2 0x0100 //FIXME
304 #define MB_TYPE_ACPRED 0x0200
305 #define MB_TYPE_GMC 0x0400
306 #define MB_TYPE_SKIP 0x0800
307 #define MB_TYPE_P0L0 0x1000
308 #define MB_TYPE_P1L0 0x2000
309 #define MB_TYPE_P0L1 0x4000
310 #define MB_TYPE_P1L1 0x8000
311 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
312 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
313 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
314 #define MB_TYPE_QUANT 0x00010000
315 #define MB_TYPE_CBP 0x00020000
316 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
317
318 /**
319 * Pan Scan area.
320 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
321 */
322 typedef struct AVPanScan{
323 /**
324 * id.
325 * - encoding: set by user.
326 * - decoding: set by lavc
327 */
328 int id;
329
330 /**
331 * width and height in 1/16 pel
332 * - encoding: set by user.
333 * - decoding: set by lavc
334 */
335 int width;
336 int height;
337
338 /**
339 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
340 * - encoding: set by user.
341 * - decoding: set by lavc
342 */
343 int16_t position[3][2];
344 }AVPanScan;
345
346 #define FF_COMMON_FRAME \
347 /**\
348 * pointer to the picture planes.\
349 * this might be different from the first allocated byte\
350 * - encoding: \
351 * - decoding: \
352 */\
353 uint8_t *data[4];\
354 int linesize[4];\
355 /**\
356 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
357 * this isnt used by lavc unless the default get/release_buffer() is used\
358 * - encoding: \
359 * - decoding: \
360 */\
361 uint8_t *base[4];\
362 /**\
363 * 1 -> keyframe, 0-> not\
364 * - encoding: set by lavc\
365 * - decoding: set by lavc\
366 */\
367 int key_frame;\
368 \
369 /**\
370 * picture type of the frame, see ?_TYPE below.\
371 * - encoding: set by lavc for coded_picture (and set by user for input)\
372 * - decoding: set by lavc\
373 */\
374 int pict_type;\
375 \
376 /**\
377 * presentation timestamp in micro seconds (time when frame should be shown to user)\
378 * if 0 then the frame_rate will be used as reference\
379 * - encoding: MUST be set by user\
380 * - decoding: set by lavc\
381 */\
382 int64_t pts;\
383 \
384 /**\
385 * picture number in bitstream order.\
386 * - encoding: set by\
387 * - decoding: set by lavc\
388 */\
389 int coded_picture_number;\
390 /**\
391 * picture number in display order.\
392 * - encoding: set by\
393 * - decoding: set by lavc\
394 */\
395 int display_picture_number;\
396 \
397 /**\
398 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
399 * - encoding: set by lavc for coded_picture (and set by user for input)\
400 * - decoding: set by lavc\
401 */\
402 int quality; \
403 \
404 /**\
405 * buffer age (1->was last buffer and dint change, 2->..., ...).\
406 * set to INT_MAX if the buffer has not been used yet \
407 * - encoding: unused\
408 * - decoding: MUST be set by get_buffer()\
409 */\
410 int age;\
411 \
412 /**\
413 * is this picture used as reference\
414 * - encoding: unused\
415 * - decoding: set by lavc (before get_buffer() call))\
416 */\
417 int reference;\
418 \
419 /**\
420 * QP table\
421 * - encoding: unused\
422 * - decoding: set by lavc\
423 */\
424 int8_t *qscale_table;\
425 /**\
426 * QP store stride\
427 * - encoding: unused\
428 * - decoding: set by lavc\
429 */\
430 int qstride;\
431 \
432 /**\
433 * mbskip_table[mb]>=1 if MB didnt change\
434 * stride= mb_width = (width+15)>>4\
435 * - encoding: unused\
436 * - decoding: set by lavc\
437 */\
438 uint8_t *mbskip_table;\
439 \
440 /**\
441 * Motion vector table\
442 * - encoding: unused\
443 * - decoding: set by lavc\
444 */\
445 int16_t (*motion_val[2])[2];\
446 \
447 /**\
448 * Macroblock type table\
449 * mb_type_base + mb_width + 2\
450 * - encoding: unused\
451 * - decoding: set by lavc\
452 */\
453 uint32_t *mb_type;\
454 \
455 /**\
456 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
457 * - encoding: unused\
458 * - decoding: set by lavc\
459 */\
460 uint8_t motion_subsample_log2;\
461 \
462 /**\
463 * for some private data of the user\
464 * - encoding: unused\
465 * - decoding: set by user\
466 */\
467 void *opaque;\
468 \
469 /**\
470 * error\
471 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
472 * - decoding: unused\
473 */\
474 uint64_t error[4];\
475 \
476 /**\
477 * type of the buffer (to keep track of who has to dealloc data[*])\
478 * - encoding: set by the one who allocs it\
479 * - decoding: set by the one who allocs it\
480 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
481 */\
482 int type;\
483 \
484 /**\
485 * when decoding, this signal how much the picture must be delayed.\
486 * extra_delay = repeat_pict / (2*fps)\
487 * - encoding: unused\
488 * - decoding: set by lavc\
489 */\
490 int repeat_pict;\
491 \
492 /**\
493 * \
494 */\
495 int qscale_type;\
496 \
497 /**\
498 * The content of the picture is interlaced.\
499 * - encoding: set by user\
500 * - decoding: set by lavc (default 0)\
501 */\
502 int interlaced_frame;\
503 \
504 /**\
505 * if the content is interlaced, is top field displayed first.\
506 * - encoding: set by user\
507 * - decoding: set by lavc\
508 */\
509 int top_field_first;\
510 \
511 /**\
512 * Pan scan.\
513 * - encoding: set by user\
514 * - decoding: set by lavc\
515 */\
516 AVPanScan *pan_scan;\
517 \
518 /**\
519 * tell user application that palette has changed from previous frame.\
520 * - encoding: ??? (no palette-enabled encoder yet)\
521 * - decoding: set by lavc (default 0)\
522 */\
523 int palette_has_changed;\
524 \
525 /**\
526 * Codec suggestion on buffer type if != 0\
527 * - encoding: unused\
528 * - decoding: set by lavc (before get_buffer() call))\
529 */\
530 int buffer_hints;\
531
532 #define FF_QSCALE_TYPE_MPEG1 0
533 #define FF_QSCALE_TYPE_MPEG2 1
534
535 #define FF_BUFFER_TYPE_INTERNAL 1
536 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
537 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
538 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
539
540
541 #define FF_I_TYPE 1 // Intra
542 #define FF_P_TYPE 2 // Predicted
543 #define FF_B_TYPE 3 // Bi-dir predicted
544 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
545 #define FF_SI_TYPE 5
546 #define FF_SP_TYPE 6
547
548 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
549 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
550 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
551 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
552
553 /**
554 * Audio Video Frame.
555 */
556 typedef struct AVFrame {
557 FF_COMMON_FRAME
558 } AVFrame;
559
560 #define DEFAULT_FRAME_RATE_BASE 1001000
561
562 /**
563 * main external api structure.
564 */
565 typedef struct AVCodecContext {
566 /**
567 * the average bitrate.
568 * - encoding: set by user. unused for constant quantizer encoding
569 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
570 */
571 int bit_rate;
572
573 /**
574 * number of bits the bitstream is allowed to diverge from the reference.
575 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
576 * - encoding: set by user. unused for constant quantizer encoding
577 * - decoding: unused
578 */
579 int bit_rate_tolerance;
580
581 /**
582 * CODEC_FLAG_*.
583 * - encoding: set by user.
584 * - decoding: set by user.
585 */
586 int flags;
587
588 /**
589 * some codecs needs additionnal format info. It is stored here
590 * - encoding: set by user.
591 * - decoding: set by lavc. (FIXME is this ok?)
592 */
593 int sub_id;
594
595 /**
596 * motion estimation algorithm used for video coding.
597 * - encoding: MUST be set by user.
598 * - decoding: unused
599 */
600 int me_method;
601
602 /**
603 * some codecs need / can use extra-data like huffman tables.
604 * mjpeg: huffman tables
605 * rv10: additional flags
606 * mpeg4: global headers (they can be in the bitstream or here)
607 * - encoding: set/allocated/freed by lavc.
608 * - decoding: set/allocated/freed by user.
609 */
610 void *extradata;
611 int extradata_size;
612
613 /* video only */
614 /**
615 * frames per sec multiplied by frame_rate_base.
616 * for variable fps this is the precission, so if the timestamps
617 * can be specified in msec precssion then this is 1000*frame_rate_base
618 * - encoding: MUST be set by user
619 * - decoding: set by lavc. 0 or the frame_rate if available
620 */
621 int frame_rate;
622
623 /**
624 * width / height.
625 * - encoding: MUST be set by user.
626 * - decoding: set by user if known, codec should override / dynamically change if needed
627 */
628 int width, height;
629
630 #define FF_ASPECT_SQUARE 1
631 #define FF_ASPECT_4_3_625 2
632 #define FF_ASPECT_4_3_525 3
633 #define FF_ASPECT_16_9_625 4
634 #define FF_ASPECT_16_9_525 5
635 #define FF_ASPECT_EXTENDED 15
636
637 /**
638 * the number of pictures in a group of pitures, or 0 for intra_only.
639 * - encoding: set by user.
640 * - decoding: unused
641 */
642 int gop_size;
643
644 /**
645 * pixel format, see PIX_FMT_xxx.
646 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
647 * conversion is in order. This only works for
648 * codecs with one supported pix_fmt, we should
649 * do something for a generic case as well.
650 * - decoding: set by lavc.
651 */
652 enum PixelFormat pix_fmt;
653
654 /**
655 * Frame rate emulation. If not zero lower layer (i.e. format handler)
656 * has to read frames at native frame rate.
657 * - encoding: set by user.
658 * - decoding: unused.
659 */
660 int rate_emu;
661
662 /**
663 * if non NULL, 'draw_horiz_band' is called by the libavcodec
664 * decoder to draw an horizontal band. It improve cache usage. Not
665 * all codecs can do that. You must check the codec capabilities
666 * before
667 * - encoding: unused
668 * - decoding: set by user.
669 * @param height the height of the slice
670 * @param y the y position of the slice
671 * @param type 1->top field, 2->bottom field, 3->frame
672 * @param offset offset into the AVFrame.data from which the slice should be read
673 */
674 void (*draw_horiz_band)(struct AVCodecContext *s,
675 const AVFrame *src, int offset[4],
676 int y, int type, int height);
677
678 /* audio only */
679 int sample_rate; ///< samples per sec
680 int channels;
681 int sample_fmt; ///< sample format, currenly unused
682
683 /* the following data should not be initialized */
684 int frame_size; ///< in samples, initialized when calling 'init'
685 int frame_number; ///< audio or video frame number
686 int real_pict_num; ///< returns the real picture number of previous encoded frame
687
688 /**
689 * number of frames the decoded output will be delayed relative to
690 * the encoded input.
691 * - encoding: set by lavc.
692 * - decoding: unused
693 */
694 int delay;
695
696 /* - encoding parameters */
697 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
698 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
699
700 /**
701 * minimum quantizer.
702 * - encoding: set by user.
703 * - decoding: unused
704 */
705 int qmin;
706
707 /**
708 * maximum quantizer.
709 * - encoding: set by user.
710 * - decoding: unused
711 */
712 int qmax;
713
714 /**
715 * maximum quantizer difference etween frames.
716 * - encoding: set by user.
717 * - decoding: unused
718 */
719 int max_qdiff;
720
721 /**
722 * maximum number of b frames between non b frames.
723 * note: the output will be delayed by max_b_frames+1 relative to the input
724 * - encoding: set by user.
725 * - decoding: unused
726 */
727 int max_b_frames;
728
729 /**
730 * qscale factor between ip and b frames.
731 * - encoding: set by user.
732 * - decoding: unused
733 */
734 float b_quant_factor;
735
736 /** obsolete FIXME remove */
737 int rc_strategy;
738 int b_frame_strategy;
739
740 /**
741 * hurry up amount.
742 * - encoding: unused
743 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
744 */
745 int hurry_up;
746
747 struct AVCodec *codec;
748
749 void *priv_data;
750
751 /* unused, FIXME remove*/
752 int rtp_mode;
753
754 int rtp_payload_size; /* The size of the RTP payload, the coder will */
755 /* do it's best to deliver a chunk with size */
756 /* below rtp_payload_size, the chunk will start */
757 /* with a start code on some codecs like H.263 */
758 /* This doesn't take account of any particular */
759 /* headers inside the transmited RTP payload */
760
761
762 /* The RTP callcack: This function is called */
763 /* every time the encoder as a packet to send */
764 /* Depends on the encoder if the data starts */
765 /* with a Start Code (it should) H.263 does */
766 void (*rtp_callback)(void *data, int size, int packet_number);
767
768 /* statistics, used for 2-pass encoding */
769 int mv_bits;
770 int header_bits;
771 int i_tex_bits;
772 int p_tex_bits;
773 int i_count;
774 int p_count;
775 int skip_count;
776 int misc_bits;
777
778 /**
779 * number of bits used for the previously encoded frame.
780 * - encoding: set by lavc
781 * - decoding: unused
782 */
783 int frame_bits;
784
785 /**
786 * private data of the user, can be used to carry app specific stuff.
787 * - encoding: set by user
788 * - decoding: set by user
789 */
790 void *opaque;
791
792 char codec_name[32];
793 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
794 enum CodecID codec_id; /* see CODEC_ID_xxx */
795
796 /**
797 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
798 * this is used to workaround some encoder bugs
799 * - encoding: set by user, if not then the default based on codec_id will be used
800 * - decoding: set by user, will be converted to upper case by lavc during init
801 */
802 unsigned int codec_tag;
803
804 /**
805 * workaround bugs in encoders which sometimes cannot be detected automatically.
806 * - encoding: unused
807 * - decoding: set by user
808 */
809 int workaround_bugs;
810 #define FF_BUG_AUTODETECT 1 ///< autodetection
811 #define FF_BUG_OLD_MSMPEG4 2
812 #define FF_BUG_XVID_ILACE 4
813 #define FF_BUG_UMP4 8
814 #define FF_BUG_NO_PADDING 16
815 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
816 #define FF_BUG_QPEL_CHROMA 64
817 #define FF_BUG_STD_QPEL 128
818 #define FF_BUG_QPEL_CHROMA2 256
819 #define FF_BUG_DIRECT_BLOCKSIZE 512
820 #define FF_BUG_EDGE 1024
821 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
822
823 /**
824 * luma single coeff elimination threshold.
825 * - encoding: set by user
826 * - decoding: unused
827 */
828 int luma_elim_threshold;
829
830 /**
831 * chroma single coeff elimination threshold.
832 * - encoding: set by user
833 * - decoding: unused
834 */
835 int chroma_elim_threshold;
836
837 /**
838 * strictly follow the std (MPEG4, ...).
839 * - encoding: set by user
840 * - decoding: unused
841 */
842 int strict_std_compliance;
843
844 /**
845 * qscale offset between ip and b frames.
846 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
847 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
848 * - encoding: set by user.
849 * - decoding: unused
850 */
851 float b_quant_offset;
852
853 /**
854 * error resilience higher values will detect more errors but may missdetect
855 * some more or less valid parts as errors.
856 * - encoding: unused
857 * - decoding: set by user
858 */
859 int error_resilience;
860 #define FF_ER_CAREFULL 1
861 #define FF_ER_COMPLIANT 2
862 #define FF_ER_AGGRESSIVE 3
863 #define FF_ER_VERY_AGGRESSIVE 4
864
865 /**
866 * called at the beginning of each frame to get a buffer for it.
867 * if pic.reference is set then the frame will be read later by lavc
868 * width and height should be rounded up to the next multiple of 16
869 * - encoding: unused
870 * - decoding: set by lavc, user can override
871 */
872 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
873
874 /**
875 * called to release buffers which where allocated with get_buffer.
876 * a released buffer can be reused in get_buffer()
877 * pic.data[*] must be set to NULL
878 * - encoding: unused
879 * - decoding: set by lavc, user can override
880 */
881 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
882
883 /**
884 * is 1 if the decoded stream contains b frames, 0 otherwise.
885 * - encoding: unused
886 * - decoding: set by lavc
887 */
888 int has_b_frames;
889
890 int block_align; ///< used by some WAV based audio codecs
891
892 int parse_only; /* - decoding only: if true, only parsing is done
893 (function avcodec_parse_frame()). The frame
894 data is returned. Only MPEG codecs support this now. */
895
896 /**
897 * 0-> h263 quant 1-> mpeg quant.
898 * - encoding: set by user.
899 * - decoding: unused
900 */
901 int mpeg_quant;
902
903 /**
904 * pass1 encoding statistics output buffer.
905 * - encoding: set by lavc
906 * - decoding: unused
907 */
908 char *stats_out;
909
910 /**
911 * pass2 encoding statistics input buffer.
912 * concatenated stuff from stats_out of pass1 should be placed here
913 * - encoding: allocated/set/freed by user
914 * - decoding: unused
915 */
916 char *stats_in;
917
918 /**
919 * ratecontrol qmin qmax limiting method.
920 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
921 * - encoding: set by user.
922 * - decoding: unused
923 */
924 float rc_qsquish;
925
926 float rc_qmod_amp;
927 int rc_qmod_freq;
928
929 /**
930 * ratecontrol override, see RcOverride.
931 * - encoding: allocated/set/freed by user.
932 * - decoding: unused
933 */
934 RcOverride *rc_override;
935 int rc_override_count;
936
937 /**
938 * rate control equation.
939 * - encoding: set by user
940 * - decoding: unused
941 */
942 char *rc_eq;
943
944 /**
945 * maximum bitrate.
946 * - encoding: set by user.
947 * - decoding: unused
948 */
949 int rc_max_rate;
950
951 /**
952 * minimum bitrate.
953 * - encoding: set by user.
954 * - decoding: unused
955 */
956 int rc_min_rate;
957
958 /**
959 * decoder bitstream buffer size.
960 * - encoding: set by user.
961 * - decoding: unused
962 */
963 int rc_buffer_size;
964 float rc_buffer_aggressivity;
965
966 /**
967 * qscale factor between p and i frames.
968 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
969 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
970 * - encoding: set by user.
971 * - decoding: unused
972 */
973 float i_quant_factor;
974
975 /**
976 * qscale offset between p and i frames.
977 * - encoding: set by user.
978 * - decoding: unused
979 */
980 float i_quant_offset;
981
982 /**
983 * initial complexity for pass1 ratecontrol.
984 * - encoding: set by user.
985 * - decoding: unused
986 */
987 float rc_initial_cplx;
988
989 /**
990 * dct algorithm, see FF_DCT_* below.
991 * - encoding: set by user
992 * - decoding: unused
993 */
994 int dct_algo;
995 #define FF_DCT_AUTO 0
996 #define FF_DCT_FASTINT 1
997 #define FF_DCT_INT 2
998 #define FF_DCT_MMX 3
999 #define FF_DCT_MLIB 4
1000 #define FF_DCT_ALTIVEC 5
1001 #define FF_DCT_FAAN 6
1002
1003 /**
1004 * luminance masking (0-> disabled).
1005 * - encoding: set by user
1006 * - decoding: unused
1007 */
1008 float lumi_masking;
1009
1010 /**
1011 * temporary complexity masking (0-> disabled).
1012 * - encoding: set by user
1013 * - decoding: unused
1014 */
1015 float temporal_cplx_masking;
1016
1017 /**
1018 * spatial complexity masking (0-> disabled).
1019 * - encoding: set by user
1020 * - decoding: unused
1021 */
1022 float spatial_cplx_masking;
1023
1024 /**
1025 * p block masking (0-> disabled).
1026 * - encoding: set by user
1027 * - decoding: unused
1028 */
1029 float p_masking;
1030
1031 /**
1032 * darkness masking (0-> disabled).
1033 * - encoding: set by user
1034 * - decoding: unused
1035 */
1036 float dark_masking;
1037
1038
1039 /* for binary compatibility */
1040 int unused;
1041
1042 /**
1043 * idct algorithm, see FF_IDCT_* below.
1044 * - encoding: set by user
1045 * - decoding: set by user
1046 */
1047 int idct_algo;
1048 #define FF_IDCT_AUTO 0
1049 #define FF_IDCT_INT 1
1050 #define FF_IDCT_SIMPLE 2
1051 #define FF_IDCT_SIMPLEMMX 3
1052 #define FF_IDCT_LIBMPEG2MMX 4
1053 #define FF_IDCT_PS2 5
1054 #define FF_IDCT_MLIB 6
1055 #define FF_IDCT_ARM 7
1056 #define FF_IDCT_ALTIVEC 8
1057 #define FF_IDCT_SH4 9
1058 #define FF_IDCT_SIMPLEARM 10
1059
1060 /**
1061 * slice count.
1062 * - encoding: set by lavc
1063 * - decoding: set by user (or 0)
1064 */
1065 int slice_count;
1066 /**
1067 * slice offsets in the frame in bytes.
1068 * - encoding: set/allocated by lavc
1069 * - decoding: set/allocated by user (or NULL)
1070 */
1071 int *slice_offset;
1072
1073 /**
1074 * error concealment flags.
1075 * - encoding: unused
1076 * - decoding: set by user
1077 */
1078 int error_concealment;
1079 #define FF_EC_GUESS_MVS 1
1080 #define FF_EC_DEBLOCK 2
1081
1082 /**
1083 * dsp_mask could be add used to disable unwanted CPU features
1084 * CPU features (i.e. MMX, SSE. ...)
1085 *
1086 * with FORCE flag you may instead enable given CPU features
1087 * (Dangerous: usable in case of misdetection, improper usage however will
1088 * result into program crash)
1089 */
1090 unsigned dsp_mask;
1091 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1092 /* lower 16 bits - CPU features */
1093 #ifdef HAVE_MMX
1094 #define FF_MM_MMX 0x0001 /* standard MMX */
1095 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1096 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1097 #define FF_MM_SSE 0x0008 /* SSE functions */
1098 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1099 #endif /* HAVE_MMX */
1100
1101 /**
1102 * bits per sample/pixel from the demuxer (needed for huffyuv).
1103 * - encoding: set by lavc
1104 * - decoding: set by user
1105 */
1106 int bits_per_sample;
1107
1108 /**
1109 * prediction method (needed for huffyuv).
1110 * - encoding: set by user
1111 * - decoding: unused
1112 */
1113 int prediction_method;
1114 #define FF_PRED_LEFT 0
1115 #define FF_PRED_PLANE 1
1116 #define FF_PRED_MEDIAN 2
1117
1118 /**
1119 * sample aspect ratio (0 if unknown).
1120 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1121 * - encoding: set by user.
1122 * - decoding: set by lavc.
1123 */
1124 AVRational sample_aspect_ratio;
1125
1126 /**
1127 * the picture in the bitstream.
1128 * - encoding: set by lavc
1129 * - decoding: set by lavc
1130 */
1131 AVFrame *coded_frame;
1132
1133 /**
1134 * debug.
1135 * - encoding: set by user.
1136 * - decoding: set by user.
1137 */
1138 int debug;
1139 #define FF_DEBUG_PICT_INFO 1
1140 #define FF_DEBUG_RC 2
1141 #define FF_DEBUG_BITSTREAM 4
1142 #define FF_DEBUG_MB_TYPE 8
1143 #define FF_DEBUG_QP 16
1144 #define FF_DEBUG_MV 32
1145 //#define FF_DEBUG_VIS_MV 0x00000040
1146 #define FF_DEBUG_SKIP 0x00000080
1147 #define FF_DEBUG_STARTCODE 0x00000100
1148 #define FF_DEBUG_PTS 0x00000200
1149 #define FF_DEBUG_ER 0x00000400
1150 #define FF_DEBUG_MMCO 0x00000800
1151 #define FF_DEBUG_BUGS 0x00001000
1152 #define FF_DEBUG_VIS_QP 0x00002000
1153 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1154
1155 /**
1156 * debug.
1157 * - encoding: set by user.
1158 * - decoding: set by user.
1159 */
1160 int debug_mv;
1161 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1162 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1163 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1164
1165 /**
1166 * error.
1167 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1168 * - decoding: unused
1169 */
1170 uint64_t error[4];
1171
1172 /**
1173 * minimum MB quantizer.
1174 * - encoding: set by user.
1175 * - decoding: unused
1176 */
1177 int mb_qmin;
1178
1179 /**
1180 * maximum MB quantizer.
1181 * - encoding: set by user.
1182 * - decoding: unused
1183 */
1184 int mb_qmax;
1185
1186 /**
1187 * motion estimation compare function.
1188 * - encoding: set by user.
1189 * - decoding: unused
1190 */
1191 int me_cmp;
1192 /**
1193 * subpixel motion estimation compare function.
1194 * - encoding: set by user.
1195 * - decoding: unused
1196 */
1197 int me_sub_cmp;
1198 /**
1199 * macroblock compare function (not supported yet).
1200 * - encoding: set by user.
1201 * - decoding: unused
1202 */
1203 int mb_cmp;
1204 /**
1205 * interlaced dct compare function
1206 * - encoding: set by user.
1207 * - decoding: unused
1208 */
1209 int ildct_cmp;
1210 #define FF_CMP_SAD 0
1211 #define FF_CMP_SSE 1
1212 #define FF_CMP_SATD 2
1213 #define FF_CMP_DCT 3
1214 #define FF_CMP_PSNR 4
1215 #define FF_CMP_BIT 5
1216 #define FF_CMP_RD 6
1217 #define FF_CMP_ZERO 7
1218 #define FF_CMP_VSAD 8
1219 #define FF_CMP_VSSE 9
1220 #define FF_CMP_CHROMA 256
1221
1222 /**
1223 * ME diamond size & shape.
1224 * - encoding: set by user.
1225 * - decoding: unused
1226 */
1227 int dia_size;
1228
1229 /**
1230 * amount of previous MV predictors (2a+1 x 2a+1 square).
1231 * - encoding: set by user.
1232 * - decoding: unused
1233 */
1234 int last_predictor_count;
1235
1236 /**
1237 * pre pass for motion estimation.
1238 * - encoding: set by user.
1239 * - decoding: unused
1240 */
1241 int pre_me;
1242
1243 /**
1244 * motion estimation pre pass compare function.
1245 * - encoding: set by user.
1246 * - decoding: unused
1247 */
1248 int me_pre_cmp;
1249
1250 /**
1251 * ME pre pass diamond size & shape.
1252 * - encoding: set by user.
1253 * - decoding: unused
1254 */
1255 int pre_dia_size;
1256
1257 /**
1258 * subpel ME quality.
1259 * - encoding: set by user.
1260 * - decoding: unused
1261 */
1262 int me_subpel_quality;
1263
1264 /**
1265 * callback to negotiate the pixelFormat.
1266 * @param fmt is the list of formats which are supported by the codec,
1267 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1268 * the first is allways the native one
1269 * @return the choosen format
1270 * - encoding: unused
1271 * - decoding: set by user, if not set then the native format will always be choosen
1272 */
1273 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1274
1275 /**
1276 * DTG active format information (additionnal aspect ratio
1277 * information only used in DVB MPEG2 transport streams). 0 if
1278 * not set.
1279 *
1280 * - encoding: unused.
1281 * - decoding: set by decoder
1282 */
1283 int dtg_active_format;
1284 #define FF_DTG_AFD_SAME 8
1285 #define FF_DTG_AFD_4_3 9
1286 #define FF_DTG_AFD_16_9 10
1287 #define FF_DTG_AFD_14_9 11
1288 #define FF_DTG_AFD_4_3_SP_14_9 13
1289 #define FF_DTG_AFD_16_9_SP_14_9 14
1290 #define FF_DTG_AFD_SP_4_3 15
1291
1292 /**
1293 * Maximum motion estimation search range in subpel units.
1294 * if 0 then no limit
1295 *
1296 * - encoding: set by user.
1297 * - decoding: unused.
1298 */
1299 int me_range;
1300
1301 /**
1302 * frame_rate_base.
1303 * for variable fps this is 1
1304 * - encoding: set by user.
1305 * - decoding: set by lavc.
1306 * @todo move this after frame_rate
1307 */
1308
1309 int frame_rate_base;
1310 /**
1311 * intra quantizer bias.
1312 * - encoding: set by user.
1313 * - decoding: unused
1314 */
1315 int intra_quant_bias;
1316 #define FF_DEFAULT_QUANT_BIAS 999999
1317
1318 /**
1319 * inter quantizer bias.
1320 * - encoding: set by user.
1321 * - decoding: unused
1322 */
1323 int inter_quant_bias;
1324
1325 /**
1326 * color table ID.
1327 * - encoding: unused.
1328 * - decoding: which clrtable should be used for 8bit RGB images
1329 * table have to be stored somewhere FIXME
1330 */
1331 int color_table_id;
1332
1333 /**
1334 * internal_buffer count.
1335 * Dont touch, used by lavc default_get_buffer()
1336 */
1337 int internal_buffer_count;
1338
1339 /**
1340 * internal_buffers.
1341 * Dont touch, used by lavc default_get_buffer()
1342 */
1343 void *internal_buffer;
1344
1345 #define FF_LAMBDA_SHIFT 7
1346 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1347 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1348 #define FF_LAMBDA_MAX (256*128-1)
1349
1350 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1351 /**
1352 * global quality for codecs which cannot change it per frame.
1353 * this should be proportional to MPEG1/2/4 qscale.
1354 * - encoding: set by user.
1355 * - decoding: unused
1356 */
1357 int global_quality;
1358
1359 #define FF_CODER_TYPE_VLC 0
1360 #define FF_CODER_TYPE_AC 1
1361 /**
1362 * coder type
1363 * - encoding: set by user.
1364 * - decoding: unused
1365 */
1366 int coder_type;
1367
1368 /**
1369 * context model
1370 * - encoding: set by user.
1371 * - decoding: unused
1372 */
1373 int context_model;
1374
1375 /**
1376 * slice flags
1377 * - encoding: unused
1378 * - decoding: set by user.
1379 */
1380 int slice_flags;
1381 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1382 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1383 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1384
1385 /**
1386 * XVideo Motion Acceleration
1387 * - encoding: forbidden
1388 * - decoding: set by decoder
1389 */
1390 int xvmc_acceleration;
1391
1392 /**
1393 * macroblock decision mode
1394 * - encoding: set by user.
1395 * - decoding: unused
1396 */
1397 int mb_decision;
1398 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1399 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1400 #define FF_MB_DECISION_RD 2 ///< rate distoration
1401
1402 /**
1403 * custom intra quantization matrix
1404 * - encoding: set by user, can be NULL
1405 * - decoding: set by lavc
1406 */
1407 uint16_t *intra_matrix;
1408
1409 /**
1410 * custom inter quantization matrix
1411 * - encoding: set by user, can be NULL
1412 * - decoding: set by lavc
1413 */
1414 uint16_t *inter_matrix;
1415
1416 /**
1417 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1418 * this is used to workaround some encoder bugs
1419 * - encoding: unused
1420 * - decoding: set by user, will be converted to upper case by lavc during init
1421 */
1422 unsigned int stream_codec_tag;
1423
1424 /**
1425 * scene change detection threshold.
1426 * 0 is default, larger means fewer detected scene changes
1427 * - encoding: set by user.
1428 * - decoding: unused
1429 */
1430 int scenechange_threshold;
1431
1432 /**
1433 * minimum lagrange multipler
1434 * - encoding: set by user.
1435 * - decoding: unused
1436 */
1437 int lmin;
1438
1439 /**
1440 * maximum lagrange multipler
1441 * - encoding: set by user.
1442 * - decoding: unused
1443 */
1444 int lmax;
1445
1446 /**
1447 * Palette control structure
1448 * - encoding: ??? (no palette-enabled encoder yet)
1449 * - decoding: set by user.
1450 */
1451 struct AVPaletteControl *palctrl;
1452
1453 /**
1454 * noise reduction strength
1455 * - encoding: set by user.
1456 * - decoding: unused
1457 */
1458 int noise_reduction;
1459
1460 /**
1461 * called at the beginning of a frame to get cr buffer for it.
1462 * buffer type (size, hints) must be the same. lavc won't check it.
1463 * lavc will pass previous buffer in pic, function should return
1464 * same buffer or new buffer with old frame "painted" into it.
1465 * if pic.data[0] == NULL must behave like get_buffer().
1466 * - encoding: unused
1467 * - decoding: set by lavc, user can override
1468 */
1469 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1470
1471 /**
1472 * number of bits which should be loaded into the rc buffer before decoding starts
1473 * - encoding: set by user.
1474 * - decoding: unused
1475 */
1476 int rc_initial_buffer_occupancy;
1477
1478 /**
1479 *
1480 * - encoding: set by user.
1481 * - decoding: unused
1482 */
1483 int inter_threshold;
1484
1485 /**
1486 * CODEC_FLAG2_*.
1487 * - encoding: set by user.
1488 * - decoding: set by user.
1489 */
1490 int flags2;
1491
1492 /**
1493 * simulates errors in the bitstream to test error concealment.
1494 * - encoding: set by user.
1495 * - decoding: unused.
1496 */
1497 int error_rate;
1498
1499 /**
1500 * MP3 antialias algorithm, see FF_AA_* below.
1501 * - encoding: unused
1502 * - decoding: set by user
1503 */
1504 int antialias_algo;
1505 #define FF_AA_AUTO 0
1506 #define FF_AA_FASTINT 1 //not implemented yet
1507 #define FF_AA_INT 2
1508 #define FF_AA_FLOAT 3
1509 /**
1510 * Quantizer noise shaping.
1511 * - encoding: set by user
1512 * - decoding: unused
1513 */
1514 int quantizer_noise_shaping;
1515 } AVCodecContext;
1516
1517
1518 /**
1519 * AVOption.
1520 */
1521 typedef struct AVOption {
1522 /** options' name */
1523 const char *name; /* if name is NULL, it indicates a link to next */
1524 /** short English text help or const struct AVOption* subpointer */
1525 const char *help; // const struct AVOption* sub;
1526 /** offset to context structure where the parsed value should be stored */
1527 int offset;
1528 /** options' type */
1529 int type;
1530 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1531 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1532 #define FF_OPT_TYPE_INT 3 ///< integer
1533 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1534 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1535 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1536 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1537 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1538 /** min value (min == max -> no limits) */
1539 double min;
1540 /** maximum value for double/int */
1541 double max;
1542 /** default boo [0,1]l/double/int value */
1543 double defval;
1544 /**
1545 * default string value (with optional semicolon delimited extra option-list
1546 * i.e. option1;option2;option3
1547 * defval might select other then first argument as default
1548 */
1549 const char *defstr;
1550 #define FF_OPT_MAX_DEPTH 10
1551 } AVOption;
1552
1553 /**
1554 * Parse option(s) and sets fields in passed structure
1555 * @param strct structure where the parsed results will be written
1556 * @param list list with AVOptions
1557 * @param opts string with options for parsing
1558 */
1559 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1560
1561
1562 /**
1563 * AVCodec.
1564 */
1565 typedef struct AVCodec {
1566 const char *name;
1567 enum CodecType type;
1568 int id;
1569 int priv_data_size;
1570 int (*init)(AVCodecContext *);
1571 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1572 int (*close)(AVCodecContext *);
1573 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1574 uint8_t *buf, int buf_size);
1575 int capabilities;
1576 const AVOption *options;
1577 struct AVCodec *next;
1578 void (*flush)(AVCodecContext *);
1579 } AVCodec;
1580
1581 /**
1582 * four components are given, that's all.
1583 * the last component is alpha
1584 */
1585 typedef struct AVPicture {
1586 uint8_t *data[4];
1587 int linesize[4]; ///< number of bytes per line
1588 } AVPicture;
1589
1590 /**
1591 * AVPaletteControl
1592 * This structure defines a method for communicating palette changes
1593 * between and demuxer and a decoder.
1594 */
1595 #define AVPALETTE_SIZE 1024
1596 #define AVPALETTE_COUNT 256
1597 typedef struct AVPaletteControl {
1598
1599 /* demuxer sets this to 1 to indicate the palette has changed;
1600 * decoder resets to 0 */
1601 int palette_changed;
1602
1603 /* 4-byte ARGB palette entries, stored in native byte order; note that
1604 * the individual palette components should be on a 8-bit scale; if
1605 * the palette data comes from a IBM VGA native format, the component
1606 * data is probably 6 bits in size and needs to be scaled */
1607 unsigned int palette[AVPALETTE_COUNT];
1608
1609 } AVPaletteControl;
1610
1611 extern AVCodec ac3_encoder;
1612 extern AVCodec mp2_encoder;
1613 extern AVCodec mp3lame_encoder;
1614 extern AVCodec oggvorbis_encoder;
1615 extern AVCodec faac_encoder;
1616 extern AVCodec mpeg1video_encoder;
1617 extern AVCodec mpeg2video_encoder;
1618 extern AVCodec h263_encoder;
1619 extern AVCodec h263p_encoder;
1620 extern AVCodec flv_encoder;
1621 extern AVCodec rv10_encoder;
1622 extern AVCodec rv20_encoder;
1623 extern AVCodec mjpeg_encoder;
1624 extern AVCodec ljpeg_encoder;
1625 extern AVCodec mpeg4_encoder;
1626 extern AVCodec msmpeg4v1_encoder;
1627 extern AVCodec msmpeg4v2_encoder;
1628 extern AVCodec msmpeg4v3_encoder;
1629 extern AVCodec wmv1_encoder;
1630 extern AVCodec wmv2_encoder;
1631 extern AVCodec huffyuv_encoder;
1632 extern AVCodec h264_encoder;
1633 extern AVCodec asv1_encoder;
1634 extern AVCodec asv2_encoder;
1635 extern AVCodec vcr1_encoder;
1636 extern AVCodec ffv1_encoder;
1637 extern AVCodec mdec_encoder;
1638 extern AVCodec zlib_encoder;
1639
1640 extern AVCodec h263_decoder;
1641 extern AVCodec mpeg4_decoder;
1642 extern AVCodec msmpeg4v1_decoder;
1643 extern AVCodec msmpeg4v2_decoder;
1644 extern AVCodec msmpeg4v3_decoder;
1645 extern AVCodec wmv1_decoder;
1646 extern AVCodec wmv2_decoder;
1647 extern AVCodec mpeg1video_decoder;
1648 extern AVCodec mpeg2video_decoder;
1649 extern AVCodec mpegvideo_decoder;
1650 extern AVCodec mpeg_xvmc_decoder;
1651 extern AVCodec h263i_decoder;
1652 extern AVCodec flv_decoder;
1653 extern AVCodec rv10_decoder;
1654 extern AVCodec rv20_decoder;
1655 extern AVCodec svq1_decoder;
1656 extern AVCodec svq3_decoder;
1657 extern AVCodec dvvideo_decoder;
1658 extern AVCodec wmav1_decoder;
1659 extern AVCodec wmav2_decoder;
1660 extern AVCodec mjpeg_decoder;
1661 extern AVCodec mjpegb_decoder;
1662 extern AVCodec sp5x_decoder;
1663 extern AVCodec mp2_decoder;
1664 extern AVCodec mp3_decoder;
1665 extern AVCodec mace3_decoder;
1666 extern AVCodec mace6_decoder;
1667 extern AVCodec huffyuv_decoder;
1668 extern AVCodec oggvorbis_decoder;
1669 extern AVCodec cyuv_decoder;
1670 extern AVCodec h264_decoder;
1671 extern AVCodec indeo3_decoder;
1672 extern AVCodec vp3_decoder;
1673 extern AVCodec theora_decoder;
1674 extern AVCodec amr_nb_decoder;
1675 extern AVCodec amr_nb_encoder;
1676 extern AVCodec amr_wb_encoder;
1677 extern AVCodec amr_wb_decoder;
1678 extern AVCodec aac_decoder;
1679 extern AVCodec mpeg4aac_decoder;
1680 extern AVCodec asv1_decoder;
1681 extern AVCodec asv2_decoder;
1682 extern AVCodec vcr1_decoder;
1683 extern AVCodec cljr_decoder;
1684 extern AVCodec ffv1_decoder;
1685 extern AVCodec fourxm_decoder;
1686 extern AVCodec mdec_decoder;
1687 extern AVCodec roq_decoder;
1688 extern AVCodec interplay_video_decoder;
1689 extern AVCodec xan_wc3_decoder;
1690 extern AVCodec rpza_decoder;
1691 extern AVCodec cinepak_decoder;
1692 extern AVCodec msrle_decoder;
1693 extern AVCodec msvideo1_decoder;
1694 extern AVCodec vqa_decoder;
1695 extern AVCodec idcin_decoder;
1696 extern AVCodec eightbps_decoder;
1697 extern AVCodec smc_decoder;
1698 extern AVCodec flic_decoder;
1699 extern AVCodec vmdvideo_decoder;
1700 extern AVCodec vmdaudio_decoder;
1701 extern AVCodec truemotion1_decoder;
1702 extern AVCodec mszh_decoder;
1703 extern AVCodec zlib_decoder;
1704 extern AVCodec ra_144_decoder;
1705 extern AVCodec ra_288_decoder;
1706 extern AVCodec roq_dpcm_decoder;
1707 extern AVCodec interplay_dpcm_decoder;
1708 extern AVCodec xan_dpcm_decoder;
1709
1710 /* pcm codecs */
1711 #define PCM_CODEC(id, name) \
1712 extern AVCodec name ## _decoder; \
1713 extern AVCodec name ## _encoder
1714
1715 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1716 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1717 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1718 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1719 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1720 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1721 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1722 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1723
1724 /* adpcm codecs */
1725
1726 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1727 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1728 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1729 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1730 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1731 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1732 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1733 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1734 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1735 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1736 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1737
1738 #undef PCM_CODEC
1739
1740 /* dummy raw video codec */
1741 extern AVCodec rawvideo_encoder;
1742 extern AVCodec rawvideo_decoder;
1743
1744 /* the following codecs use external GPL libs */
1745 extern AVCodec ac3_decoder;
1746
1747 /* resample.c */
1748
1749 struct ReSampleContext;
1750
1751 typedef struct ReSampleContext ReSampleContext;
1752
1753 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1754 int output_rate, int input_rate);
1755 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1756 void audio_resample_close(ReSampleContext *s);
1757
1758 /* YUV420 format is assumed ! */
1759
1760 struct ImgReSampleContext;
1761
1762 typedef struct ImgReSampleContext ImgReSampleContext;
1763
1764 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1765 int input_width, int input_height);
1766
1767 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1768 int iwidth, int iheight,
1769 int topBand, int bottomBand,
1770 int leftBand, int rightBand);
1771
1772 void img_resample(ImgReSampleContext *s,
1773 AVPicture *output, const AVPicture *input);
1774
1775 void img_resample_close(ImgReSampleContext *s);
1776
1777 /**
1778 * Allocate memory for a picture. Call avpicture_free to free it.
1779 *
1780 * @param picture the picture to be filled in.
1781 * @param pix_fmt the format of the picture.
1782 * @param width the width of the picture.
1783 * @param height the height of the picture.
1784 * @return 0 if successful, -1 if not.
1785 */
1786 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1787
1788 /* Free a picture previously allocated by avpicture_alloc. */
1789 void avpicture_free(AVPicture *picture);
1790
1791 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1792 int pix_fmt, int width, int height);
1793 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1794 unsigned char *dest, int dest_size);
1795 int avpicture_get_size(int pix_fmt, int width, int height);
1796 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1797 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1798 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1799
1800 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1801 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1802 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1803 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1804 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1805 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1806
1807 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1808 int has_alpha);
1809 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1810 int has_alpha, int *loss_ptr);
1811
1812 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1813 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1814 int img_get_alpha_info(const AVPicture *src,
1815 int pix_fmt, int width, int height);
1816
1817 /* convert among pixel formats */
1818 int img_convert(AVPicture *dst, int dst_pix_fmt,
1819 const AVPicture *src, int pix_fmt,
1820 int width, int height);
1821
1822 /* deinterlace a picture */
1823 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1824 int pix_fmt, int width, int height);
1825
1826 /* external high level API */
1827
1828 extern AVCodec *first_avcodec;
1829
1830 /* returns LIBAVCODEC_VERSION_INT constant */
1831 unsigned avcodec_version(void);
1832 /* returns LIBAVCODEC_BUILD constant */
1833 unsigned avcodec_build(void);
1834 void avcodec_init(void);
1835
1836 void register_avcodec(AVCodec *format);
1837 AVCodec *avcodec_find_encoder(enum CodecID id);
1838 AVCodec *avcodec_find_encoder_by_name(const char *name);
1839 AVCodec *avcodec_find_decoder(enum CodecID id);
1840 AVCodec *avcodec_find_decoder_by_name(const char *name);
1841 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1842
1843 void avcodec_get_context_defaults(AVCodecContext *s);
1844 AVCodecContext *avcodec_alloc_context(void);
1845 AVFrame *avcodec_alloc_frame(void);
1846
1847 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1848 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1849 void avcodec_default_free_buffers(AVCodecContext *s);
1850
1851 /**
1852 * opens / inits the AVCodecContext.
1853 * not thread save!
1854 */
1855 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1856
1857 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1858 int *frame_size_ptr,
1859 uint8_t *buf, int buf_size);
1860 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1861 int *got_picture_ptr,
1862 uint8_t *buf, int buf_size);
1863 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1864 int *data_size_ptr,
1865 uint8_t *buf, int buf_size);
1866 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1867 const short *samples);
1868 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1869 const AVFrame *pict);
1870
1871 int avcodec_close(AVCodecContext *avctx);
1872
1873 void avcodec_register_all(void);
1874
1875 void avcodec_flush_buffers(AVCodecContext *avctx);
1876
1877 /* misc usefull functions */
1878
1879 /**
1880 * returns a single letter to describe the picture type
1881 */
1882 char av_get_pict_type_char(int pict_type);
1883
1884 /**
1885 * reduce a fraction.
1886 * this is usefull for framerate calculations
1887 * @param max the maximum allowed for dst_nom & dst_den
1888 * @return 1 if exact, 0 otherwise
1889 */
1890 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1891
1892 /**
1893 * rescale a 64bit integer.
1894 * a simple a*b/c isnt possible as it can overflow
1895 */
1896 int64_t av_rescale(int64_t a, int b, int c);
1897
1898
1899 /**
1900 * Interface for 0.5.0 version
1901 *
1902 * do not even think about it's usage for this moment
1903 */
1904
1905 typedef struct {
1906 /// compressed size used from given memory buffer
1907 int size;
1908 /// I/P/B frame type
1909 int frame_type;
1910 } avc_enc_result_t;
1911
1912 /**
1913 * Commands
1914 * order can't be changed - once it was defined
1915 */
1916 typedef enum {
1917 // general commands
1918 AVC_OPEN_BY_NAME = 0xACA000,
1919 AVC_OPEN_BY_CODEC_ID,
1920 AVC_OPEN_BY_FOURCC,
1921 AVC_CLOSE,
1922
1923 AVC_FLUSH,
1924 // pin - struct { uint8_t* src, uint_t src_size }
1925 // pout - struct { AVPicture* img, consumed_bytes,
1926 AVC_DECODE,
1927 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1928 // pout - uint_t used_from_dest_size
1929 AVC_ENCODE,
1930
1931 // query/get video commands
1932 AVC_GET_VERSION = 0xACB000,
1933 AVC_GET_WIDTH,
1934 AVC_GET_HEIGHT,
1935 AVC_GET_DELAY,
1936 AVC_GET_QUANT_TABLE,
1937 // ...
1938
1939 // query/get audio commands
1940 AVC_GET_FRAME_SIZE = 0xABC000,
1941
1942 // maybe define some simple structure which
1943 // might be passed to the user - but they can't
1944 // contain any codec specific parts and these
1945 // calls are usualy necessary only few times
1946
1947 // set video commands
1948 AVC_SET_WIDTH = 0xACD000,
1949 AVC_SET_HEIGHT,
1950
1951 // set video encoding commands
1952 AVC_SET_FRAME_RATE = 0xACD800,
1953 AVC_SET_QUALITY,
1954 AVC_SET_HURRY_UP,
1955
1956 // set audio commands
1957 AVC_SET_SAMPLE_RATE = 0xACE000,
1958 AVC_SET_CHANNELS,
1959
1960 } avc_cmd_t;
1961
1962 /**
1963 * \param handle allocated private structure by libavcodec
1964 * for initialization pass NULL - will be returned pout
1965 * user is supposed to know nothing about its structure
1966 * \param cmd type of operation to be performed
1967 * \param pint input parameter
1968 * \param pout output parameter
1969 *
1970 * \returns command status - eventually for query command it might return
1971 * integer resulting value
1972 */
1973 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1974
1975 /* frame parsing */
1976 typedef struct AVCodecParserContext {
1977 void *priv_data;
1978 struct AVCodecParser *parser;
1979 int64_t frame_offset; /* offset of the current frame */
1980 int64_t cur_offset; /* current offset
1981 (incremented by each av_parser_parse()) */
1982 int64_t last_frame_offset; /* offset of the last frame */
1983 /* video info */
1984 int pict_type; /* XXX: put it back in AVCodecContext */
1985 int repeat_pict; /* XXX: put it back in AVCodecContext */
1986 int64_t pts; /* pts of the current frame */
1987 int64_t dts; /* dts of the current frame */
1988
1989 /* private data */
1990 int64_t last_pts;
1991 int64_t last_dts;
1992
1993 #define AV_PARSER_PTS_NB 4
1994 int cur_frame_start_index;
1995 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
1996 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
1997 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
1998 } AVCodecParserContext;
1999
2000 typedef struct AVCodecParser {
2001 int codec_ids[3]; /* several codec IDs are permitted */
2002 int priv_data_size;
2003 int (*parser_init)(AVCodecParserContext *s);
2004 int (*parser_parse)(AVCodecParserContext *s,
2005 AVCodecContext *avctx,
2006 uint8_t **poutbuf, int *poutbuf_size,
2007 const uint8_t *buf, int buf_size);
2008 void (*parser_close)(AVCodecParserContext *s);
2009 struct AVCodecParser *next;
2010 } AVCodecParser;
2011
2012 extern AVCodecParser *av_first_parser;
2013
2014 void av_register_codec_parser(AVCodecParser *parser);
2015 AVCodecParserContext *av_parser_init(int codec_id);
2016 int av_parser_parse(AVCodecParserContext *s,
2017 AVCodecContext *avctx,
2018 uint8_t **poutbuf, int *poutbuf_size,
2019 const uint8_t *buf, int buf_size,
2020 int64_t pts, int64_t dts);
2021 void av_parser_close(AVCodecParserContext *s);
2022
2023 extern AVCodecParser mpegvideo_parser;
2024 extern AVCodecParser mpeg4video_parser;
2025 extern AVCodecParser h263_parser;
2026 extern AVCodecParser h264_parser;
2027 extern AVCodecParser mpegaudio_parser;
2028 extern AVCodecParser ac3_parser;
2029
2030 /* memory */
2031 void *av_malloc(unsigned int size);
2032 void *av_mallocz(unsigned int size);
2033 void *av_realloc(void *ptr, unsigned int size);
2034 void av_free(void *ptr);
2035 char *av_strdup(const char *s);
2036 void __av_freep(void **ptr);
2037 #define av_freep(p) __av_freep((void **)(p))
2038 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2039 /* for static data only */
2040 /* call av_free_static to release all staticaly allocated tables */
2041 void av_free_static(void);
2042 void *__av_mallocz_static(void** location, unsigned int size);
2043 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2044
2045 /* add by bero : in adx.c */
2046 int is_adx(const unsigned char *buf,size_t bufsize);
2047
2048 void img_copy(AVPicture *dst, const AVPicture *src,
2049 int pix_fmt, int width, int height);
2050
2051 /* av_log API */
2052
2053 #include <stdarg.h>
2054
2055 #define AV_LOG_ERROR 0
2056 #define AV_LOG_INFO 1
2057 #define AV_LOG_DEBUG 2
2058
2059 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2060 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2061 extern int av_log_get_level(void);
2062 extern void av_log_set_level(int);
2063 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2064
2065 #undef AV_LOG_TRAP_PRINTF
2066 #ifdef AV_LOG_TRAP_PRINTF
2067 #define printf DO NOT USE
2068 #define fprintf DO NOT USE
2069 #undef stderr
2070 #define stderr DO NOT USE
2071 #endif
2072
2073 #ifdef __cplusplus
2074 }
2075 #endif
2076
2077 #endif /* AVCODEC_H */