export DCT coefficients patch by (Wolfgang Hesseler <wolfgang.hesseler at imk dot...
[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 4705
21
22 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23 #define LIBAVCODEC_VERSION FFMPEG_VERSION
24
25 #define AV_STRINGIFY(s) AV_TOSTRING(s)
26 #define AV_TOSTRING(s) #s
27 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
28
29 #define AV_NOPTS_VALUE INT64_MIN
30 #define AV_TIME_BASE 1000000
31
32 enum CodecID {
33 CODEC_ID_NONE,
34 CODEC_ID_MPEG1VIDEO,
35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
36 CODEC_ID_MPEG2VIDEO_XVMC,
37 CODEC_ID_H263,
38 CODEC_ID_RV10,
39 CODEC_ID_RV20,
40 CODEC_ID_MP2,
41 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
42 CODEC_ID_VORBIS,
43 CODEC_ID_AC3,
44 CODEC_ID_MJPEG,
45 CODEC_ID_MJPEGB,
46 CODEC_ID_LJPEG,
47 CODEC_ID_SP5X,
48 CODEC_ID_MPEG4,
49 CODEC_ID_RAWVIDEO,
50 CODEC_ID_MSMPEG4V1,
51 CODEC_ID_MSMPEG4V2,
52 CODEC_ID_MSMPEG4V3,
53 CODEC_ID_WMV1,
54 CODEC_ID_WMV2,
55 CODEC_ID_H263P,
56 CODEC_ID_H263I,
57 CODEC_ID_FLV1,
58 CODEC_ID_SVQ1,
59 CODEC_ID_SVQ3,
60 CODEC_ID_DVVIDEO,
61 CODEC_ID_DVAUDIO,
62 CODEC_ID_WMAV1,
63 CODEC_ID_WMAV2,
64 CODEC_ID_MACE3,
65 CODEC_ID_MACE6,
66 CODEC_ID_HUFFYUV,
67 CODEC_ID_CYUV,
68 CODEC_ID_H264,
69 CODEC_ID_INDEO3,
70 CODEC_ID_VP3,
71 CODEC_ID_THEORA,
72 CODEC_ID_AAC,
73 CODEC_ID_MPEG4AAC,
74 CODEC_ID_ASV1,
75 CODEC_ID_ASV2,
76 CODEC_ID_FFV1,
77 CODEC_ID_4XM,
78 CODEC_ID_VCR1,
79 CODEC_ID_CLJR,
80 CODEC_ID_MDEC,
81 CODEC_ID_ROQ,
82 CODEC_ID_INTERPLAY_VIDEO,
83 CODEC_ID_XAN_WC3,
84 CODEC_ID_XAN_WC4,
85 CODEC_ID_RPZA,
86 CODEC_ID_CINEPAK,
87 CODEC_ID_WS_VQA,
88 CODEC_ID_MSRLE,
89 CODEC_ID_MSVIDEO1,
90 CODEC_ID_IDCIN,
91 CODEC_ID_8BPS,
92 CODEC_ID_SMC,
93 CODEC_ID_FLIC,
94 CODEC_ID_TRUEMOTION1,
95 CODEC_ID_VMDVIDEO,
96 CODEC_ID_VMDAUDIO,
97 CODEC_ID_MSZH,
98 CODEC_ID_ZLIB,
99 CODEC_ID_QTRLE,
100
101 /* various pcm "codecs" */
102 CODEC_ID_PCM_S16LE,
103 CODEC_ID_PCM_S16BE,
104 CODEC_ID_PCM_U16LE,
105 CODEC_ID_PCM_U16BE,
106 CODEC_ID_PCM_S8,
107 CODEC_ID_PCM_U8,
108 CODEC_ID_PCM_MULAW,
109 CODEC_ID_PCM_ALAW,
110
111 /* various adpcm codecs */
112 CODEC_ID_ADPCM_IMA_QT,
113 CODEC_ID_ADPCM_IMA_WAV,
114 CODEC_ID_ADPCM_IMA_DK3,
115 CODEC_ID_ADPCM_IMA_DK4,
116 CODEC_ID_ADPCM_IMA_WS,
117 CODEC_ID_ADPCM_IMA_SMJPEG,
118 CODEC_ID_ADPCM_MS,
119 CODEC_ID_ADPCM_4XM,
120 CODEC_ID_ADPCM_XA,
121 CODEC_ID_ADPCM_ADX,
122 CODEC_ID_ADPCM_EA,
123 CODEC_ID_ADPCM_G726,
124
125 /* AMR */
126 CODEC_ID_AMR_NB,
127 CODEC_ID_AMR_WB,
128
129 /* RealAudio codecs*/
130 CODEC_ID_RA_144,
131 CODEC_ID_RA_288,
132
133 /* various DPCM codecs */
134 CODEC_ID_ROQ_DPCM,
135 CODEC_ID_INTERPLAY_DPCM,
136 CODEC_ID_XAN_DPCM,
137
138 CODEC_ID_FLAC,
139
140 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
141 stream (only used by libavformat) */
142 };
143
144 /* CODEC_ID_MP3LAME is absolete */
145 #define CODEC_ID_MP3LAME CODEC_ID_MP3
146
147 enum CodecType {
148 CODEC_TYPE_UNKNOWN = -1,
149 CODEC_TYPE_VIDEO,
150 CODEC_TYPE_AUDIO,
151 CODEC_TYPE_DATA,
152 };
153
154 /**
155 * Pixel format. Notes:
156 *
157 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
158 * color is put together as:
159 * (A << 24) | (R << 16) | (G << 8) | B
160 * This is stored as BGRA on little endian CPU architectures and ARGB on
161 * big endian CPUs.
162 *
163 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
164 * image data is stored in AVFrame.data[0]. The palette is transported in
165 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
166 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
167 * also endian-specific). Note also that the individual RGB palette
168 * components stored in AVFrame.data[1] should be in the range 0..255.
169 * This is important as many custom PAL8 video codecs that were designed
170 * to run on the IBM VGA graphics adapter use 6-bit palette components.
171 */
172 enum PixelFormat {
173 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
174 PIX_FMT_YUV422,
175 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
176 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
177 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
178 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
179 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
180 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
181 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
182 PIX_FMT_RGB565, ///< always stored in cpu endianness
183 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
184 PIX_FMT_GRAY8,
185 PIX_FMT_MONOWHITE, ///< 0 is white
186 PIX_FMT_MONOBLACK, ///< 0 is black
187 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
188 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
189 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
190 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
191 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
192 PIX_FMT_XVMC_MPEG2_IDCT,
193 PIX_FMT_NB,
194 };
195
196 /* currently unused, may be used if 24/32 bits samples ever supported */
197 enum SampleFormat {
198 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
199 };
200
201 /* in bytes */
202 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
203
204 /**
205 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
206 * this is mainly needed because some optimized bitstream readers read
207 * 32 or 64 bit at once and could read over the end<br>
208 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
209 * MPEG bitstreams could cause overread and segfault
210 */
211 #define FF_INPUT_BUFFER_PADDING_SIZE 8
212
213 /* motion estimation type, EPZS by default */
214 enum Motion_Est_ID {
215 ME_ZERO = 1,
216 ME_FULL,
217 ME_LOG,
218 ME_PHODS,
219 ME_EPZS,
220 ME_X1
221 };
222
223 typedef struct RcOverride{
224 int start_frame;
225 int end_frame;
226 int qscale; // if this is 0 then quality_factor will be used instead
227 float quality_factor;
228 } RcOverride;
229
230 /* only for ME compatiblity with old apps */
231 extern int motion_estimation_method;
232
233 #define FF_MAX_B_FRAMES 8
234
235 /* encoding support
236 these flags can be passed in AVCodecContext.flags before initing
237 Note: note not everything is supported yet
238 */
239
240 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
241 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
242 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
243 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
244 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
245 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
246 /* parent program gurantees that the input for b-frame containing streams is not written to
247 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
248 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
249 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
250 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
251 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
252 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
253 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
254 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
255 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
256 of only at frame boundaries */
257 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
258 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
259 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
260 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
261 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
262 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
263 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
264 /* Fx : Flag for h263+ extra options */
265 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
266 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
267 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
268 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
269 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
270 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
271 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
272 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
273 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
274 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
275 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
276 #define CODEC_FLAG_CLOSED_GOP 0x80000000
277 /* Unsupported options :
278 * Syntax Arithmetic coding (SAC)
279 * Reference Picture Selection
280 * Independant Segment Decoding */
281 /* /Fx */
282 /* codec capabilities */
283
284 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
285 /**
286 * Codec uses get_buffer() for allocating buffers.
287 * direct rendering method 1
288 */
289 #define CODEC_CAP_DR1 0x0002
290 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
291 used */
292 #define CODEC_CAP_PARSE_ONLY 0x0004
293 #define CODEC_CAP_TRUNCATED 0x0008
294
295 //the following defines might change, so dont expect compatibility if u use them
296 #define MB_TYPE_INTRA4x4 0x0001
297 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
298 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
299 #define MB_TYPE_16x16 0x0008
300 #define MB_TYPE_16x8 0x0010
301 #define MB_TYPE_8x16 0x0020
302 #define MB_TYPE_8x8 0x0040
303 #define MB_TYPE_INTERLACED 0x0080
304 #define MB_TYPE_DIRECT2 0x0100 //FIXME
305 #define MB_TYPE_ACPRED 0x0200
306 #define MB_TYPE_GMC 0x0400
307 #define MB_TYPE_SKIP 0x0800
308 #define MB_TYPE_P0L0 0x1000
309 #define MB_TYPE_P1L0 0x2000
310 #define MB_TYPE_P0L1 0x4000
311 #define MB_TYPE_P1L1 0x8000
312 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
313 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
314 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
315 #define MB_TYPE_QUANT 0x00010000
316 #define MB_TYPE_CBP 0x00020000
317 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
318
319 /**
320 * Pan Scan area.
321 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
322 */
323 typedef struct AVPanScan{
324 /**
325 * id.
326 * - encoding: set by user.
327 * - decoding: set by lavc
328 */
329 int id;
330
331 /**
332 * width and height in 1/16 pel
333 * - encoding: set by user.
334 * - decoding: set by lavc
335 */
336 int width;
337 int height;
338
339 /**
340 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
341 * - encoding: set by user.
342 * - decoding: set by lavc
343 */
344 int16_t position[3][2];
345 }AVPanScan;
346
347 #define FF_COMMON_FRAME \
348 /**\
349 * pointer to the picture planes.\
350 * this might be different from the first allocated byte\
351 * - encoding: \
352 * - decoding: \
353 */\
354 uint8_t *data[4];\
355 int linesize[4];\
356 /**\
357 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
358 * this isnt used by lavc unless the default get/release_buffer() is used\
359 * - encoding: \
360 * - decoding: \
361 */\
362 uint8_t *base[4];\
363 /**\
364 * 1 -> keyframe, 0-> not\
365 * - encoding: set by lavc\
366 * - decoding: set by lavc\
367 */\
368 int key_frame;\
369 \
370 /**\
371 * picture type of the frame, see ?_TYPE below.\
372 * - encoding: set by lavc for coded_picture (and set by user for input)\
373 * - decoding: set by lavc\
374 */\
375 int pict_type;\
376 \
377 /**\
378 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
379 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
380 * - encoding: MUST be set by user\
381 * - decoding: set by lavc\
382 */\
383 int64_t pts;\
384 \
385 /**\
386 * picture number in bitstream order.\
387 * - encoding: set by\
388 * - decoding: set by lavc\
389 */\
390 int coded_picture_number;\
391 /**\
392 * picture number in display order.\
393 * - encoding: set by\
394 * - decoding: set by lavc\
395 */\
396 int display_picture_number;\
397 \
398 /**\
399 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
400 * - encoding: set by lavc for coded_picture (and set by user for input)\
401 * - decoding: set by lavc\
402 */\
403 int quality; \
404 \
405 /**\
406 * buffer age (1->was last buffer and dint change, 2->..., ...).\
407 * set to INT_MAX if the buffer has not been used yet \
408 * - encoding: unused\
409 * - decoding: MUST be set by get_buffer()\
410 */\
411 int age;\
412 \
413 /**\
414 * is this picture used as reference\
415 * - encoding: unused\
416 * - decoding: set by lavc (before get_buffer() call))\
417 */\
418 int reference;\
419 \
420 /**\
421 * QP table\
422 * - encoding: unused\
423 * - decoding: set by lavc\
424 */\
425 int8_t *qscale_table;\
426 /**\
427 * QP store stride\
428 * - encoding: unused\
429 * - decoding: set by lavc\
430 */\
431 int qstride;\
432 \
433 /**\
434 * mbskip_table[mb]>=1 if MB didnt change\
435 * stride= mb_width = (width+15)>>4\
436 * - encoding: unused\
437 * - decoding: set by lavc\
438 */\
439 uint8_t *mbskip_table;\
440 \
441 /**\
442 * Motion vector table\
443 * - encoding: unused\
444 * - decoding: set by lavc\
445 */\
446 int16_t (*motion_val[2])[2];\
447 \
448 /**\
449 * Macroblock type table\
450 * mb_type_base + mb_width + 2\
451 * - encoding: unused\
452 * - decoding: set by lavc\
453 */\
454 uint32_t *mb_type;\
455 \
456 /**\
457 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
458 * - encoding: unused\
459 * - decoding: set by lavc\
460 */\
461 uint8_t motion_subsample_log2;\
462 \
463 /**\
464 * for some private data of the user\
465 * - encoding: unused\
466 * - decoding: set by user\
467 */\
468 void *opaque;\
469 \
470 /**\
471 * error\
472 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
473 * - decoding: unused\
474 */\
475 uint64_t error[4];\
476 \
477 /**\
478 * type of the buffer (to keep track of who has to dealloc data[*])\
479 * - encoding: set by the one who allocs it\
480 * - decoding: set by the one who allocs it\
481 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
482 */\
483 int type;\
484 \
485 /**\
486 * when decoding, this signal how much the picture must be delayed.\
487 * extra_delay = repeat_pict / (2*fps)\
488 * - encoding: unused\
489 * - decoding: set by lavc\
490 */\
491 int repeat_pict;\
492 \
493 /**\
494 * \
495 */\
496 int qscale_type;\
497 \
498 /**\
499 * The content of the picture is interlaced.\
500 * - encoding: set by user\
501 * - decoding: set by lavc (default 0)\
502 */\
503 int interlaced_frame;\
504 \
505 /**\
506 * if the content is interlaced, is top field displayed first.\
507 * - encoding: set by user\
508 * - decoding: set by lavc\
509 */\
510 int top_field_first;\
511 \
512 /**\
513 * Pan scan.\
514 * - encoding: set by user\
515 * - decoding: set by lavc\
516 */\
517 AVPanScan *pan_scan;\
518 \
519 /**\
520 * tell user application that palette has changed from previous frame.\
521 * - encoding: ??? (no palette-enabled encoder yet)\
522 * - decoding: set by lavc (default 0)\
523 */\
524 int palette_has_changed;\
525 \
526 /**\
527 * Codec suggestion on buffer type if != 0\
528 * - encoding: unused\
529 * - decoding: set by lavc (before get_buffer() call))\
530 */\
531 int buffer_hints;\
532 \
533 /**\
534 * DCT coeffitients\
535 * - encoding: unused\
536 * - decoding: set by lavc\
537 */\
538 short *dct_coeff;\
539
540 #define FF_QSCALE_TYPE_MPEG1 0
541 #define FF_QSCALE_TYPE_MPEG2 1
542
543 #define FF_BUFFER_TYPE_INTERNAL 1
544 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
545 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
546 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
547
548
549 #define FF_I_TYPE 1 // Intra
550 #define FF_P_TYPE 2 // Predicted
551 #define FF_B_TYPE 3 // Bi-dir predicted
552 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
553 #define FF_SI_TYPE 5
554 #define FF_SP_TYPE 6
555
556 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
557 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
558 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
559 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
560
561 /**
562 * Audio Video Frame.
563 */
564 typedef struct AVFrame {
565 FF_COMMON_FRAME
566 } AVFrame;
567
568 #define DEFAULT_FRAME_RATE_BASE 1001000
569
570 /**
571 * main external api structure.
572 */
573 typedef struct AVCodecContext {
574 /**
575 * the average bitrate.
576 * - encoding: set by user. unused for constant quantizer encoding
577 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
578 */
579 int bit_rate;
580
581 /**
582 * number of bits the bitstream is allowed to diverge from the reference.
583 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
584 * - encoding: set by user. unused for constant quantizer encoding
585 * - decoding: unused
586 */
587 int bit_rate_tolerance;
588
589 /**
590 * CODEC_FLAG_*.
591 * - encoding: set by user.
592 * - decoding: set by user.
593 */
594 int flags;
595
596 /**
597 * some codecs needs additionnal format info. It is stored here
598 * - encoding: set by user.
599 * - decoding: set by lavc. (FIXME is this ok?)
600 */
601 int sub_id;
602
603 /**
604 * motion estimation algorithm used for video coding.
605 * - encoding: MUST be set by user.
606 * - decoding: unused
607 */
608 int me_method;
609
610 /**
611 * some codecs need / can use extra-data like huffman tables.
612 * mjpeg: huffman tables
613 * rv10: additional flags
614 * mpeg4: global headers (they can be in the bitstream or here)
615 * - encoding: set/allocated/freed by lavc.
616 * - decoding: set/allocated/freed by user.
617 */
618 void *extradata;
619 int extradata_size;
620
621 /* video only */
622 /**
623 * frames per sec multiplied by frame_rate_base.
624 * for variable fps this is the precission, so if the timestamps
625 * can be specified in msec precssion then this is 1000*frame_rate_base
626 * - encoding: MUST be set by user
627 * - decoding: set by lavc. 0 or the frame_rate if available
628 */
629 int frame_rate;
630
631 /**
632 * width / height.
633 * - encoding: MUST be set by user.
634 * - decoding: set by user if known, codec should override / dynamically change if needed
635 */
636 int width, height;
637
638 #define FF_ASPECT_EXTENDED 15
639
640 /**
641 * the number of pictures in a group of pitures, or 0 for intra_only.
642 * - encoding: set by user.
643 * - decoding: unused
644 */
645 int gop_size;
646
647 /**
648 * pixel format, see PIX_FMT_xxx.
649 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
650 * conversion is in order. This only works for
651 * codecs with one supported pix_fmt, we should
652 * do something for a generic case as well.
653 * - decoding: set by lavc.
654 */
655 enum PixelFormat pix_fmt;
656
657 /**
658 * Frame rate emulation. If not zero lower layer (i.e. format handler)
659 * has to read frames at native frame rate.
660 * - encoding: set by user.
661 * - decoding: unused.
662 */
663 int rate_emu;
664
665 /**
666 * if non NULL, 'draw_horiz_band' is called by the libavcodec
667 * decoder to draw an horizontal band. It improve cache usage. Not
668 * all codecs can do that. You must check the codec capabilities
669 * before
670 * - encoding: unused
671 * - decoding: set by user.
672 * @param height the height of the slice
673 * @param y the y position of the slice
674 * @param type 1->top field, 2->bottom field, 3->frame
675 * @param offset offset into the AVFrame.data from which the slice should be read
676 */
677 void (*draw_horiz_band)(struct AVCodecContext *s,
678 const AVFrame *src, int offset[4],
679 int y, int type, int height);
680
681 /* audio only */
682 int sample_rate; ///< samples per sec
683 int channels;
684 int sample_fmt; ///< sample format, currenly unused
685
686 /* the following data should not be initialized */
687 int frame_size; ///< in samples, initialized when calling 'init'
688 int frame_number; ///< audio or video frame number
689 int real_pict_num; ///< returns the real picture number of previous encoded frame
690
691 /**
692 * number of frames the decoded output will be delayed relative to
693 * the encoded input.
694 * - encoding: set by lavc.
695 * - decoding: unused
696 */
697 int delay;
698
699 /* - encoding parameters */
700 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
701 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
702
703 /**
704 * minimum quantizer.
705 * - encoding: set by user.
706 * - decoding: unused
707 */
708 int qmin;
709
710 /**
711 * maximum quantizer.
712 * - encoding: set by user.
713 * - decoding: unused
714 */
715 int qmax;
716
717 /**
718 * maximum quantizer difference etween frames.
719 * - encoding: set by user.
720 * - decoding: unused
721 */
722 int max_qdiff;
723
724 /**
725 * maximum number of b frames between non b frames.
726 * note: the output will be delayed by max_b_frames+1 relative to the input
727 * - encoding: set by user.
728 * - decoding: unused
729 */
730 int max_b_frames;
731
732 /**
733 * qscale factor between ip and b frames.
734 * - encoding: set by user.
735 * - decoding: unused
736 */
737 float b_quant_factor;
738
739 /** obsolete FIXME remove */
740 int rc_strategy;
741 int b_frame_strategy;
742
743 /**
744 * hurry up amount.
745 * - encoding: unused
746 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
747 */
748 int hurry_up;
749
750 struct AVCodec *codec;
751
752 void *priv_data;
753
754 /* unused, FIXME remove*/
755 int rtp_mode;
756
757 int rtp_payload_size; /* The size of the RTP payload, the coder will */
758 /* do it's best to deliver a chunk with size */
759 /* below rtp_payload_size, the chunk will start */
760 /* with a start code on some codecs like H.263 */
761 /* This doesn't take account of any particular */
762 /* headers inside the transmited RTP payload */
763
764
765 /* The RTP callcack: This function is called */
766 /* every time the encoder as a packet to send */
767 /* Depends on the encoder if the data starts */
768 /* with a Start Code (it should) H.263 does */
769 void (*rtp_callback)(void *data, int size, int packet_number);
770
771 /* statistics, used for 2-pass encoding */
772 int mv_bits;
773 int header_bits;
774 int i_tex_bits;
775 int p_tex_bits;
776 int i_count;
777 int p_count;
778 int skip_count;
779 int misc_bits;
780
781 /**
782 * number of bits used for the previously encoded frame.
783 * - encoding: set by lavc
784 * - decoding: unused
785 */
786 int frame_bits;
787
788 /**
789 * private data of the user, can be used to carry app specific stuff.
790 * - encoding: set by user
791 * - decoding: set by user
792 */
793 void *opaque;
794
795 char codec_name[32];
796 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
797 enum CodecID codec_id; /* see CODEC_ID_xxx */
798
799 /**
800 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
801 * this is used to workaround some encoder bugs
802 * - encoding: set by user, if not then the default based on codec_id will be used
803 * - decoding: set by user, will be converted to upper case by lavc during init
804 */
805 unsigned int codec_tag;
806
807 /**
808 * workaround bugs in encoders which sometimes cannot be detected automatically.
809 * - encoding: unused
810 * - decoding: set by user
811 */
812 int workaround_bugs;
813 #define FF_BUG_AUTODETECT 1 ///< autodetection
814 #define FF_BUG_OLD_MSMPEG4 2
815 #define FF_BUG_XVID_ILACE 4
816 #define FF_BUG_UMP4 8
817 #define FF_BUG_NO_PADDING 16
818 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
819 #define FF_BUG_QPEL_CHROMA 64
820 #define FF_BUG_STD_QPEL 128
821 #define FF_BUG_QPEL_CHROMA2 256
822 #define FF_BUG_DIRECT_BLOCKSIZE 512
823 #define FF_BUG_EDGE 1024
824 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
825
826 /**
827 * luma single coeff elimination threshold.
828 * - encoding: set by user
829 * - decoding: unused
830 */
831 int luma_elim_threshold;
832
833 /**
834 * chroma single coeff elimination threshold.
835 * - encoding: set by user
836 * - decoding: unused
837 */
838 int chroma_elim_threshold;
839
840 /**
841 * strictly follow the std (MPEG4, ...).
842 * - encoding: set by user
843 * - decoding: unused
844 */
845 int strict_std_compliance;
846
847 /**
848 * qscale offset between ip and b frames.
849 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
850 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
851 * - encoding: set by user.
852 * - decoding: unused
853 */
854 float b_quant_offset;
855
856 /**
857 * error resilience higher values will detect more errors but may missdetect
858 * some more or less valid parts as errors.
859 * - encoding: unused
860 * - decoding: set by user
861 */
862 int error_resilience;
863 #define FF_ER_CAREFULL 1
864 #define FF_ER_COMPLIANT 2
865 #define FF_ER_AGGRESSIVE 3
866 #define FF_ER_VERY_AGGRESSIVE 4
867
868 /**
869 * called at the beginning of each frame to get a buffer for it.
870 * if pic.reference is set then the frame will be read later by lavc
871 * width and height should be rounded up to the next multiple of 16
872 * - encoding: unused
873 * - decoding: set by lavc, user can override
874 */
875 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
876
877 /**
878 * called to release buffers which where allocated with get_buffer.
879 * a released buffer can be reused in get_buffer()
880 * pic.data[*] must be set to NULL
881 * - encoding: unused
882 * - decoding: set by lavc, user can override
883 */
884 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
885
886 /**
887 * is 1 if the decoded stream contains b frames, 0 otherwise.
888 * - encoding: unused
889 * - decoding: set by lavc
890 */
891 int has_b_frames;
892
893 int block_align; ///< used by some WAV based audio codecs
894
895 int parse_only; /* - decoding only: if true, only parsing is done
896 (function avcodec_parse_frame()). The frame
897 data is returned. Only MPEG codecs support this now. */
898
899 /**
900 * 0-> h263 quant 1-> mpeg quant.
901 * - encoding: set by user.
902 * - decoding: unused
903 */
904 int mpeg_quant;
905
906 /**
907 * pass1 encoding statistics output buffer.
908 * - encoding: set by lavc
909 * - decoding: unused
910 */
911 char *stats_out;
912
913 /**
914 * pass2 encoding statistics input buffer.
915 * concatenated stuff from stats_out of pass1 should be placed here
916 * - encoding: allocated/set/freed by user
917 * - decoding: unused
918 */
919 char *stats_in;
920
921 /**
922 * ratecontrol qmin qmax limiting method.
923 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
924 * - encoding: set by user.
925 * - decoding: unused
926 */
927 float rc_qsquish;
928
929 float rc_qmod_amp;
930 int rc_qmod_freq;
931
932 /**
933 * ratecontrol override, see RcOverride.
934 * - encoding: allocated/set/freed by user.
935 * - decoding: unused
936 */
937 RcOverride *rc_override;
938 int rc_override_count;
939
940 /**
941 * rate control equation.
942 * - encoding: set by user
943 * - decoding: unused
944 */
945 char *rc_eq;
946
947 /**
948 * maximum bitrate.
949 * - encoding: set by user.
950 * - decoding: unused
951 */
952 int rc_max_rate;
953
954 /**
955 * minimum bitrate.
956 * - encoding: set by user.
957 * - decoding: unused
958 */
959 int rc_min_rate;
960
961 /**
962 * decoder bitstream buffer size.
963 * - encoding: set by user.
964 * - decoding: unused
965 */
966 int rc_buffer_size;
967 float rc_buffer_aggressivity;
968
969 /**
970 * qscale factor between p and i frames.
971 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
972 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
973 * - encoding: set by user.
974 * - decoding: unused
975 */
976 float i_quant_factor;
977
978 /**
979 * qscale offset between p and i frames.
980 * - encoding: set by user.
981 * - decoding: unused
982 */
983 float i_quant_offset;
984
985 /**
986 * initial complexity for pass1 ratecontrol.
987 * - encoding: set by user.
988 * - decoding: unused
989 */
990 float rc_initial_cplx;
991
992 /**
993 * dct algorithm, see FF_DCT_* below.
994 * - encoding: set by user
995 * - decoding: unused
996 */
997 int dct_algo;
998 #define FF_DCT_AUTO 0
999 #define FF_DCT_FASTINT 1
1000 #define FF_DCT_INT 2
1001 #define FF_DCT_MMX 3
1002 #define FF_DCT_MLIB 4
1003 #define FF_DCT_ALTIVEC 5
1004 #define FF_DCT_FAAN 6
1005
1006 /**
1007 * luminance masking (0-> disabled).
1008 * - encoding: set by user
1009 * - decoding: unused
1010 */
1011 float lumi_masking;
1012
1013 /**
1014 * temporary complexity masking (0-> disabled).
1015 * - encoding: set by user
1016 * - decoding: unused
1017 */
1018 float temporal_cplx_masking;
1019
1020 /**
1021 * spatial complexity masking (0-> disabled).
1022 * - encoding: set by user
1023 * - decoding: unused
1024 */
1025 float spatial_cplx_masking;
1026
1027 /**
1028 * p block masking (0-> disabled).
1029 * - encoding: set by user
1030 * - decoding: unused
1031 */
1032 float p_masking;
1033
1034 /**
1035 * darkness masking (0-> disabled).
1036 * - encoding: set by user
1037 * - decoding: unused
1038 */
1039 float dark_masking;
1040
1041
1042 /* for binary compatibility */
1043 int unused;
1044
1045 /**
1046 * idct algorithm, see FF_IDCT_* below.
1047 * - encoding: set by user
1048 * - decoding: set by user
1049 */
1050 int idct_algo;
1051 #define FF_IDCT_AUTO 0
1052 #define FF_IDCT_INT 1
1053 #define FF_IDCT_SIMPLE 2
1054 #define FF_IDCT_SIMPLEMMX 3
1055 #define FF_IDCT_LIBMPEG2MMX 4
1056 #define FF_IDCT_PS2 5
1057 #define FF_IDCT_MLIB 6
1058 #define FF_IDCT_ARM 7
1059 #define FF_IDCT_ALTIVEC 8
1060 #define FF_IDCT_SH4 9
1061 #define FF_IDCT_SIMPLEARM 10
1062
1063 /**
1064 * slice count.
1065 * - encoding: set by lavc
1066 * - decoding: set by user (or 0)
1067 */
1068 int slice_count;
1069 /**
1070 * slice offsets in the frame in bytes.
1071 * - encoding: set/allocated by lavc
1072 * - decoding: set/allocated by user (or NULL)
1073 */
1074 int *slice_offset;
1075
1076 /**
1077 * error concealment flags.
1078 * - encoding: unused
1079 * - decoding: set by user
1080 */
1081 int error_concealment;
1082 #define FF_EC_GUESS_MVS 1
1083 #define FF_EC_DEBLOCK 2
1084
1085 /**
1086 * dsp_mask could be add used to disable unwanted CPU features
1087 * CPU features (i.e. MMX, SSE. ...)
1088 *
1089 * with FORCE flag you may instead enable given CPU features
1090 * (Dangerous: usable in case of misdetection, improper usage however will
1091 * result into program crash)
1092 */
1093 unsigned dsp_mask;
1094 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1095 /* lower 16 bits - CPU features */
1096 #ifdef HAVE_MMX
1097 #define FF_MM_MMX 0x0001 /* standard MMX */
1098 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1099 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1100 #define FF_MM_SSE 0x0008 /* SSE functions */
1101 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1102 #endif /* HAVE_MMX */
1103
1104 /**
1105 * bits per sample/pixel from the demuxer (needed for huffyuv).
1106 * - encoding: set by lavc
1107 * - decoding: set by user
1108 */
1109 int bits_per_sample;
1110
1111 /**
1112 * prediction method (needed for huffyuv).
1113 * - encoding: set by user
1114 * - decoding: unused
1115 */
1116 int prediction_method;
1117 #define FF_PRED_LEFT 0
1118 #define FF_PRED_PLANE 1
1119 #define FF_PRED_MEDIAN 2
1120
1121 /**
1122 * sample aspect ratio (0 if unknown).
1123 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1124 * - encoding: set by user.
1125 * - decoding: set by lavc.
1126 */
1127 AVRational sample_aspect_ratio;
1128
1129 /**
1130 * the picture in the bitstream.
1131 * - encoding: set by lavc
1132 * - decoding: set by lavc
1133 */
1134 AVFrame *coded_frame;
1135
1136 /**
1137 * debug.
1138 * - encoding: set by user.
1139 * - decoding: set by user.
1140 */
1141 int debug;
1142 #define FF_DEBUG_PICT_INFO 1
1143 #define FF_DEBUG_RC 2
1144 #define FF_DEBUG_BITSTREAM 4
1145 #define FF_DEBUG_MB_TYPE 8
1146 #define FF_DEBUG_QP 16
1147 #define FF_DEBUG_MV 32
1148 #define FF_DEBUG_DCT_COEFF 0x00000040
1149 #define FF_DEBUG_SKIP 0x00000080
1150 #define FF_DEBUG_STARTCODE 0x00000100
1151 #define FF_DEBUG_PTS 0x00000200
1152 #define FF_DEBUG_ER 0x00000400
1153 #define FF_DEBUG_MMCO 0x00000800
1154 #define FF_DEBUG_BUGS 0x00001000
1155 #define FF_DEBUG_VIS_QP 0x00002000
1156 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1157
1158 /**
1159 * debug.
1160 * - encoding: set by user.
1161 * - decoding: set by user.
1162 */
1163 int debug_mv;
1164 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1165 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1166 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1167
1168 /**
1169 * error.
1170 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1171 * - decoding: unused
1172 */
1173 uint64_t error[4];
1174
1175 /**
1176 * minimum MB quantizer.
1177 * - encoding: set by user.
1178 * - decoding: unused
1179 */
1180 int mb_qmin;
1181
1182 /**
1183 * maximum MB quantizer.
1184 * - encoding: set by user.
1185 * - decoding: unused
1186 */
1187 int mb_qmax;
1188
1189 /**
1190 * motion estimation compare function.
1191 * - encoding: set by user.
1192 * - decoding: unused
1193 */
1194 int me_cmp;
1195 /**
1196 * subpixel motion estimation compare function.
1197 * - encoding: set by user.
1198 * - decoding: unused
1199 */
1200 int me_sub_cmp;
1201 /**
1202 * macroblock compare function (not supported yet).
1203 * - encoding: set by user.
1204 * - decoding: unused
1205 */
1206 int mb_cmp;
1207 /**
1208 * interlaced dct compare function
1209 * - encoding: set by user.
1210 * - decoding: unused
1211 */
1212 int ildct_cmp;
1213 #define FF_CMP_SAD 0
1214 #define FF_CMP_SSE 1
1215 #define FF_CMP_SATD 2
1216 #define FF_CMP_DCT 3
1217 #define FF_CMP_PSNR 4
1218 #define FF_CMP_BIT 5
1219 #define FF_CMP_RD 6
1220 #define FF_CMP_ZERO 7
1221 #define FF_CMP_VSAD 8
1222 #define FF_CMP_VSSE 9
1223 #define FF_CMP_CHROMA 256
1224
1225 /**
1226 * ME diamond size & shape.
1227 * - encoding: set by user.
1228 * - decoding: unused
1229 */
1230 int dia_size;
1231
1232 /**
1233 * amount of previous MV predictors (2a+1 x 2a+1 square).
1234 * - encoding: set by user.
1235 * - decoding: unused
1236 */
1237 int last_predictor_count;
1238
1239 /**
1240 * pre pass for motion estimation.
1241 * - encoding: set by user.
1242 * - decoding: unused
1243 */
1244 int pre_me;
1245
1246 /**
1247 * motion estimation pre pass compare function.
1248 * - encoding: set by user.
1249 * - decoding: unused
1250 */
1251 int me_pre_cmp;
1252
1253 /**
1254 * ME pre pass diamond size & shape.
1255 * - encoding: set by user.
1256 * - decoding: unused
1257 */
1258 int pre_dia_size;
1259
1260 /**
1261 * subpel ME quality.
1262 * - encoding: set by user.
1263 * - decoding: unused
1264 */
1265 int me_subpel_quality;
1266
1267 /**
1268 * callback to negotiate the pixelFormat.
1269 * @param fmt is the list of formats which are supported by the codec,
1270 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1271 * the first is allways the native one
1272 * @return the choosen format
1273 * - encoding: unused
1274 * - decoding: set by user, if not set then the native format will always be choosen
1275 */
1276 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1277
1278 /**
1279 * DTG active format information (additionnal aspect ratio
1280 * information only used in DVB MPEG2 transport streams). 0 if
1281 * not set.
1282 *
1283 * - encoding: unused.
1284 * - decoding: set by decoder
1285 */
1286 int dtg_active_format;
1287 #define FF_DTG_AFD_SAME 8
1288 #define FF_DTG_AFD_4_3 9
1289 #define FF_DTG_AFD_16_9 10
1290 #define FF_DTG_AFD_14_9 11
1291 #define FF_DTG_AFD_4_3_SP_14_9 13
1292 #define FF_DTG_AFD_16_9_SP_14_9 14
1293 #define FF_DTG_AFD_SP_4_3 15
1294
1295 /**
1296 * Maximum motion estimation search range in subpel units.
1297 * if 0 then no limit
1298 *
1299 * - encoding: set by user.
1300 * - decoding: unused.
1301 */
1302 int me_range;
1303
1304 /**
1305 * frame_rate_base.
1306 * for variable fps this is 1
1307 * - encoding: set by user.
1308 * - decoding: set by lavc.
1309 * @todo move this after frame_rate
1310 */
1311
1312 int frame_rate_base;
1313 /**
1314 * intra quantizer bias.
1315 * - encoding: set by user.
1316 * - decoding: unused
1317 */
1318 int intra_quant_bias;
1319 #define FF_DEFAULT_QUANT_BIAS 999999
1320
1321 /**
1322 * inter quantizer bias.
1323 * - encoding: set by user.
1324 * - decoding: unused
1325 */
1326 int inter_quant_bias;
1327
1328 /**
1329 * color table ID.
1330 * - encoding: unused.
1331 * - decoding: which clrtable should be used for 8bit RGB images
1332 * table have to be stored somewhere FIXME
1333 */
1334 int color_table_id;
1335
1336 /**
1337 * internal_buffer count.
1338 * Dont touch, used by lavc default_get_buffer()
1339 */
1340 int internal_buffer_count;
1341
1342 /**
1343 * internal_buffers.
1344 * Dont touch, used by lavc default_get_buffer()
1345 */
1346 void *internal_buffer;
1347
1348 #define FF_LAMBDA_SHIFT 7
1349 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1350 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1351 #define FF_LAMBDA_MAX (256*128-1)
1352
1353 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1354 /**
1355 * global quality for codecs which cannot change it per frame.
1356 * this should be proportional to MPEG1/2/4 qscale.
1357 * - encoding: set by user.
1358 * - decoding: unused
1359 */
1360 int global_quality;
1361
1362 #define FF_CODER_TYPE_VLC 0
1363 #define FF_CODER_TYPE_AC 1
1364 /**
1365 * coder type
1366 * - encoding: set by user.
1367 * - decoding: unused
1368 */
1369 int coder_type;
1370
1371 /**
1372 * context model
1373 * - encoding: set by user.
1374 * - decoding: unused
1375 */
1376 int context_model;
1377
1378 /**
1379 * slice flags
1380 * - encoding: unused
1381 * - decoding: set by user.
1382 */
1383 int slice_flags;
1384 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1385 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1386 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1387
1388 /**
1389 * XVideo Motion Acceleration
1390 * - encoding: forbidden
1391 * - decoding: set by decoder
1392 */
1393 int xvmc_acceleration;
1394
1395 /**
1396 * macroblock decision mode
1397 * - encoding: set by user.
1398 * - decoding: unused
1399 */
1400 int mb_decision;
1401 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1402 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1403 #define FF_MB_DECISION_RD 2 ///< rate distoration
1404
1405 /**
1406 * custom intra quantization matrix
1407 * - encoding: set by user, can be NULL
1408 * - decoding: set by lavc
1409 */
1410 uint16_t *intra_matrix;
1411
1412 /**
1413 * custom inter quantization matrix
1414 * - encoding: set by user, can be NULL
1415 * - decoding: set by lavc
1416 */
1417 uint16_t *inter_matrix;
1418
1419 /**
1420 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1421 * this is used to workaround some encoder bugs
1422 * - encoding: unused
1423 * - decoding: set by user, will be converted to upper case by lavc during init
1424 */
1425 unsigned int stream_codec_tag;
1426
1427 /**
1428 * scene change detection threshold.
1429 * 0 is default, larger means fewer detected scene changes
1430 * - encoding: set by user.
1431 * - decoding: unused
1432 */
1433 int scenechange_threshold;
1434
1435 /**
1436 * minimum lagrange multipler
1437 * - encoding: set by user.
1438 * - decoding: unused
1439 */
1440 int lmin;
1441
1442 /**
1443 * maximum lagrange multipler
1444 * - encoding: set by user.
1445 * - decoding: unused
1446 */
1447 int lmax;
1448
1449 /**
1450 * Palette control structure
1451 * - encoding: ??? (no palette-enabled encoder yet)
1452 * - decoding: set by user.
1453 */
1454 struct AVPaletteControl *palctrl;
1455
1456 /**
1457 * noise reduction strength
1458 * - encoding: set by user.
1459 * - decoding: unused
1460 */
1461 int noise_reduction;
1462
1463 /**
1464 * called at the beginning of a frame to get cr buffer for it.
1465 * buffer type (size, hints) must be the same. lavc won't check it.
1466 * lavc will pass previous buffer in pic, function should return
1467 * same buffer or new buffer with old frame "painted" into it.
1468 * if pic.data[0] == NULL must behave like get_buffer().
1469 * - encoding: unused
1470 * - decoding: set by lavc, user can override
1471 */
1472 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1473
1474 /**
1475 * number of bits which should be loaded into the rc buffer before decoding starts
1476 * - encoding: set by user.
1477 * - decoding: unused
1478 */
1479 int rc_initial_buffer_occupancy;
1480
1481 /**
1482 *
1483 * - encoding: set by user.
1484 * - decoding: unused
1485 */
1486 int inter_threshold;
1487
1488 /**
1489 * CODEC_FLAG2_*.
1490 * - encoding: set by user.
1491 * - decoding: set by user.
1492 */
1493 int flags2;
1494
1495 /**
1496 * simulates errors in the bitstream to test error concealment.
1497 * - encoding: set by user.
1498 * - decoding: unused.
1499 */
1500 int error_rate;
1501
1502 /**
1503 * MP3 antialias algorithm, see FF_AA_* below.
1504 * - encoding: unused
1505 * - decoding: set by user
1506 */
1507 int antialias_algo;
1508 #define FF_AA_AUTO 0
1509 #define FF_AA_FASTINT 1 //not implemented yet
1510 #define FF_AA_INT 2
1511 #define FF_AA_FLOAT 3
1512 /**
1513 * Quantizer noise shaping.
1514 * - encoding: set by user
1515 * - decoding: unused
1516 */
1517 int quantizer_noise_shaping;
1518
1519 /**
1520 * Thread count.
1521 * is used to decide how many independant tasks should be passed to execute()
1522 * - encoding: set by user
1523 * - decoding: set by user
1524 */
1525 int thread_count;
1526
1527 /**
1528 * the codec may call this to execute several independant things. it will return only after
1529 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1530 * default implementation will execute the parts serially
1531 * @param count the number of functions this will be identical to thread_count if possible
1532 * - encoding: set by lavc, user can override
1533 * - decoding: set by lavc, user can override
1534 */
1535 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1536
1537 /**
1538 * Thread opaque.
1539 * can be used by execute() to store some per AVCodecContext stuff.
1540 * - encoding: set by execute()
1541 * - decoding: set by execute()
1542 */
1543 void *thread_opaque;
1544 } AVCodecContext;
1545
1546
1547 /**
1548 * AVOption.
1549 */
1550 typedef struct AVOption {
1551 /** options' name */
1552 const char *name; /* if name is NULL, it indicates a link to next */
1553 /** short English text help or const struct AVOption* subpointer */
1554 const char *help; // const struct AVOption* sub;
1555 /** offset to context structure where the parsed value should be stored */
1556 int offset;
1557 /** options' type */
1558 int type;
1559 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1560 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1561 #define FF_OPT_TYPE_INT 3 ///< integer
1562 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1563 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1564 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1565 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1566 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1567 /** min value (min == max -> no limits) */
1568 double min;
1569 /** maximum value for double/int */
1570 double max;
1571 /** default boo [0,1]l/double/int value */
1572 double defval;
1573 /**
1574 * default string value (with optional semicolon delimited extra option-list
1575 * i.e. option1;option2;option3
1576 * defval might select other then first argument as default
1577 */
1578 const char *defstr;
1579 #define FF_OPT_MAX_DEPTH 10
1580 } AVOption;
1581
1582 /**
1583 * Parse option(s) and sets fields in passed structure
1584 * @param strct structure where the parsed results will be written
1585 * @param list list with AVOptions
1586 * @param opts string with options for parsing
1587 */
1588 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1589
1590
1591 /**
1592 * AVCodec.
1593 */
1594 typedef struct AVCodec {
1595 const char *name;
1596 enum CodecType type;
1597 int id;
1598 int priv_data_size;
1599 int (*init)(AVCodecContext *);
1600 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1601 int (*close)(AVCodecContext *);
1602 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1603 uint8_t *buf, int buf_size);
1604 int capabilities;
1605 const AVOption *options;
1606 struct AVCodec *next;
1607 void (*flush)(AVCodecContext *);
1608 } AVCodec;
1609
1610 /**
1611 * four components are given, that's all.
1612 * the last component is alpha
1613 */
1614 typedef struct AVPicture {
1615 uint8_t *data[4];
1616 int linesize[4]; ///< number of bytes per line
1617 } AVPicture;
1618
1619 /**
1620 * AVPaletteControl
1621 * This structure defines a method for communicating palette changes
1622 * between and demuxer and a decoder.
1623 */
1624 #define AVPALETTE_SIZE 1024
1625 #define AVPALETTE_COUNT 256
1626 typedef struct AVPaletteControl {
1627
1628 /* demuxer sets this to 1 to indicate the palette has changed;
1629 * decoder resets to 0 */
1630 int palette_changed;
1631
1632 /* 4-byte ARGB palette entries, stored in native byte order; note that
1633 * the individual palette components should be on a 8-bit scale; if
1634 * the palette data comes from a IBM VGA native format, the component
1635 * data is probably 6 bits in size and needs to be scaled */
1636 unsigned int palette[AVPALETTE_COUNT];
1637
1638 } AVPaletteControl;
1639
1640 extern AVCodec ac3_encoder;
1641 extern AVCodec mp2_encoder;
1642 extern AVCodec mp3lame_encoder;
1643 extern AVCodec oggvorbis_encoder;
1644 extern AVCodec faac_encoder;
1645 extern AVCodec mpeg1video_encoder;
1646 extern AVCodec mpeg2video_encoder;
1647 extern AVCodec h263_encoder;
1648 extern AVCodec h263p_encoder;
1649 extern AVCodec flv_encoder;
1650 extern AVCodec rv10_encoder;
1651 extern AVCodec rv20_encoder;
1652 extern AVCodec mjpeg_encoder;
1653 extern AVCodec ljpeg_encoder;
1654 extern AVCodec mpeg4_encoder;
1655 extern AVCodec msmpeg4v1_encoder;
1656 extern AVCodec msmpeg4v2_encoder;
1657 extern AVCodec msmpeg4v3_encoder;
1658 extern AVCodec wmv1_encoder;
1659 extern AVCodec wmv2_encoder;
1660 extern AVCodec huffyuv_encoder;
1661 extern AVCodec h264_encoder;
1662 extern AVCodec asv1_encoder;
1663 extern AVCodec asv2_encoder;
1664 extern AVCodec vcr1_encoder;
1665 extern AVCodec ffv1_encoder;
1666 extern AVCodec mdec_encoder;
1667 extern AVCodec zlib_encoder;
1668
1669 extern AVCodec h263_decoder;
1670 extern AVCodec mpeg4_decoder;
1671 extern AVCodec msmpeg4v1_decoder;
1672 extern AVCodec msmpeg4v2_decoder;
1673 extern AVCodec msmpeg4v3_decoder;
1674 extern AVCodec wmv1_decoder;
1675 extern AVCodec wmv2_decoder;
1676 extern AVCodec mpeg1video_decoder;
1677 extern AVCodec mpeg2video_decoder;
1678 extern AVCodec mpegvideo_decoder;
1679 extern AVCodec mpeg_xvmc_decoder;
1680 extern AVCodec h263i_decoder;
1681 extern AVCodec flv_decoder;
1682 extern AVCodec rv10_decoder;
1683 extern AVCodec rv20_decoder;
1684 extern AVCodec svq1_decoder;
1685 extern AVCodec svq3_decoder;
1686 extern AVCodec dvvideo_decoder;
1687 extern AVCodec wmav1_decoder;
1688 extern AVCodec wmav2_decoder;
1689 extern AVCodec mjpeg_decoder;
1690 extern AVCodec mjpegb_decoder;
1691 extern AVCodec sp5x_decoder;
1692 extern AVCodec mp2_decoder;
1693 extern AVCodec mp3_decoder;
1694 extern AVCodec mace3_decoder;
1695 extern AVCodec mace6_decoder;
1696 extern AVCodec huffyuv_decoder;
1697 extern AVCodec oggvorbis_decoder;
1698 extern AVCodec cyuv_decoder;
1699 extern AVCodec h264_decoder;
1700 extern AVCodec indeo3_decoder;
1701 extern AVCodec vp3_decoder;
1702 extern AVCodec theora_decoder;
1703 extern AVCodec amr_nb_decoder;
1704 extern AVCodec amr_nb_encoder;
1705 extern AVCodec amr_wb_encoder;
1706 extern AVCodec amr_wb_decoder;
1707 extern AVCodec aac_decoder;
1708 extern AVCodec mpeg4aac_decoder;
1709 extern AVCodec asv1_decoder;
1710 extern AVCodec asv2_decoder;
1711 extern AVCodec vcr1_decoder;
1712 extern AVCodec cljr_decoder;
1713 extern AVCodec ffv1_decoder;
1714 extern AVCodec fourxm_decoder;
1715 extern AVCodec mdec_decoder;
1716 extern AVCodec roq_decoder;
1717 extern AVCodec interplay_video_decoder;
1718 extern AVCodec xan_wc3_decoder;
1719 extern AVCodec rpza_decoder;
1720 extern AVCodec cinepak_decoder;
1721 extern AVCodec msrle_decoder;
1722 extern AVCodec msvideo1_decoder;
1723 extern AVCodec vqa_decoder;
1724 extern AVCodec idcin_decoder;
1725 extern AVCodec eightbps_decoder;
1726 extern AVCodec smc_decoder;
1727 extern AVCodec flic_decoder;
1728 extern AVCodec vmdvideo_decoder;
1729 extern AVCodec vmdaudio_decoder;
1730 extern AVCodec truemotion1_decoder;
1731 extern AVCodec mszh_decoder;
1732 extern AVCodec zlib_decoder;
1733 extern AVCodec ra_144_decoder;
1734 extern AVCodec ra_288_decoder;
1735 extern AVCodec roq_dpcm_decoder;
1736 extern AVCodec interplay_dpcm_decoder;
1737 extern AVCodec xan_dpcm_decoder;
1738 extern AVCodec qtrle_decoder;
1739 extern AVCodec flac_decoder;
1740
1741 /* pcm codecs */
1742 #define PCM_CODEC(id, name) \
1743 extern AVCodec name ## _decoder; \
1744 extern AVCodec name ## _encoder
1745
1746 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1747 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1748 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1749 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1750 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1751 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1752 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1753 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1754
1755 /* adpcm codecs */
1756
1757 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1758 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1759 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1760 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1761 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1762 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1763 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1764 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1765 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1766 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1767 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1768 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1769
1770 #undef PCM_CODEC
1771
1772 /* dummy raw video codec */
1773 extern AVCodec rawvideo_encoder;
1774 extern AVCodec rawvideo_decoder;
1775
1776 /* the following codecs use external GPL libs */
1777 extern AVCodec ac3_decoder;
1778
1779 /* resample.c */
1780
1781 struct ReSampleContext;
1782
1783 typedef struct ReSampleContext ReSampleContext;
1784
1785 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1786 int output_rate, int input_rate);
1787 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1788 void audio_resample_close(ReSampleContext *s);
1789
1790 /* YUV420 format is assumed ! */
1791
1792 struct ImgReSampleContext;
1793
1794 typedef struct ImgReSampleContext ImgReSampleContext;
1795
1796 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1797 int input_width, int input_height);
1798
1799 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1800 int iwidth, int iheight,
1801 int topBand, int bottomBand,
1802 int leftBand, int rightBand);
1803
1804 void img_resample(ImgReSampleContext *s,
1805 AVPicture *output, const AVPicture *input);
1806
1807 void img_resample_close(ImgReSampleContext *s);
1808
1809 /**
1810 * Allocate memory for a picture. Call avpicture_free to free it.
1811 *
1812 * @param picture the picture to be filled in.
1813 * @param pix_fmt the format of the picture.
1814 * @param width the width of the picture.
1815 * @param height the height of the picture.
1816 * @return 0 if successful, -1 if not.
1817 */
1818 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1819
1820 /* Free a picture previously allocated by avpicture_alloc. */
1821 void avpicture_free(AVPicture *picture);
1822
1823 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1824 int pix_fmt, int width, int height);
1825 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1826 unsigned char *dest, int dest_size);
1827 int avpicture_get_size(int pix_fmt, int width, int height);
1828 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1829 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1830 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1831
1832 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1833 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1834 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1835 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1836 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1837 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1838
1839 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1840 int has_alpha);
1841 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1842 int has_alpha, int *loss_ptr);
1843
1844 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1845 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1846 int img_get_alpha_info(const AVPicture *src,
1847 int pix_fmt, int width, int height);
1848
1849 /* convert among pixel formats */
1850 int img_convert(AVPicture *dst, int dst_pix_fmt,
1851 const AVPicture *src, int pix_fmt,
1852 int width, int height);
1853
1854 /* deinterlace a picture */
1855 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1856 int pix_fmt, int width, int height);
1857
1858 /* external high level API */
1859
1860 extern AVCodec *first_avcodec;
1861
1862 /* returns LIBAVCODEC_VERSION_INT constant */
1863 unsigned avcodec_version(void);
1864 /* returns LIBAVCODEC_BUILD constant */
1865 unsigned avcodec_build(void);
1866 void avcodec_init(void);
1867
1868 void register_avcodec(AVCodec *format);
1869 AVCodec *avcodec_find_encoder(enum CodecID id);
1870 AVCodec *avcodec_find_encoder_by_name(const char *name);
1871 AVCodec *avcodec_find_decoder(enum CodecID id);
1872 AVCodec *avcodec_find_decoder_by_name(const char *name);
1873 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1874
1875 void avcodec_get_context_defaults(AVCodecContext *s);
1876 AVCodecContext *avcodec_alloc_context(void);
1877 AVFrame *avcodec_alloc_frame(void);
1878
1879 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1880 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1881 void avcodec_default_free_buffers(AVCodecContext *s);
1882
1883 int avcodec_thread_init(AVCodecContext *s, int thread_count);
1884 void avcodec_thread_free(AVCodecContext *s);
1885 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1886 //FIXME func typedef
1887
1888 /**
1889 * opens / inits the AVCodecContext.
1890 * not thread save!
1891 */
1892 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1893
1894 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1895 int *frame_size_ptr,
1896 uint8_t *buf, int buf_size);
1897 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1898 int *got_picture_ptr,
1899 uint8_t *buf, int buf_size);
1900 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1901 int *data_size_ptr,
1902 uint8_t *buf, int buf_size);
1903 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1904 const short *samples);
1905 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1906 const AVFrame *pict);
1907
1908 int avcodec_close(AVCodecContext *avctx);
1909
1910 void avcodec_register_all(void);
1911
1912 void avcodec_flush_buffers(AVCodecContext *avctx);
1913
1914 /* misc usefull functions */
1915
1916 /**
1917 * returns a single letter to describe the picture type
1918 */
1919 char av_get_pict_type_char(int pict_type);
1920
1921 /**
1922 * reduce a fraction.
1923 * this is usefull for framerate calculations
1924 * @param max the maximum allowed for dst_nom & dst_den
1925 * @return 1 if exact, 0 otherwise
1926 */
1927 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1928
1929 /**
1930 * rescale a 64bit integer.
1931 * a simple a*b/c isnt possible as it can overflow
1932 */
1933 int64_t av_rescale(int64_t a, int b, int c);
1934
1935
1936 /**
1937 * Interface for 0.5.0 version
1938 *
1939 * do not even think about it's usage for this moment
1940 */
1941
1942 typedef struct {
1943 /// compressed size used from given memory buffer
1944 int size;
1945 /// I/P/B frame type
1946 int frame_type;
1947 } avc_enc_result_t;
1948
1949 /**
1950 * Commands
1951 * order can't be changed - once it was defined
1952 */
1953 typedef enum {
1954 // general commands
1955 AVC_OPEN_BY_NAME = 0xACA000,
1956 AVC_OPEN_BY_CODEC_ID,
1957 AVC_OPEN_BY_FOURCC,
1958 AVC_CLOSE,
1959
1960 AVC_FLUSH,
1961 // pin - struct { uint8_t* src, uint_t src_size }
1962 // pout - struct { AVPicture* img, consumed_bytes,
1963 AVC_DECODE,
1964 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1965 // pout - uint_t used_from_dest_size
1966 AVC_ENCODE,
1967
1968 // query/get video commands
1969 AVC_GET_VERSION = 0xACB000,
1970 AVC_GET_WIDTH,
1971 AVC_GET_HEIGHT,
1972 AVC_GET_DELAY,
1973 AVC_GET_QUANT_TABLE,
1974 // ...
1975
1976 // query/get audio commands
1977 AVC_GET_FRAME_SIZE = 0xABC000,
1978
1979 // maybe define some simple structure which
1980 // might be passed to the user - but they can't
1981 // contain any codec specific parts and these
1982 // calls are usualy necessary only few times
1983
1984 // set video commands
1985 AVC_SET_WIDTH = 0xACD000,
1986 AVC_SET_HEIGHT,
1987
1988 // set video encoding commands
1989 AVC_SET_FRAME_RATE = 0xACD800,
1990 AVC_SET_QUALITY,
1991 AVC_SET_HURRY_UP,
1992
1993 // set audio commands
1994 AVC_SET_SAMPLE_RATE = 0xACE000,
1995 AVC_SET_CHANNELS,
1996
1997 } avc_cmd_t;
1998
1999 /**
2000 * \param handle allocated private structure by libavcodec
2001 * for initialization pass NULL - will be returned pout
2002 * user is supposed to know nothing about its structure
2003 * \param cmd type of operation to be performed
2004 * \param pint input parameter
2005 * \param pout output parameter
2006 *
2007 * \returns command status - eventually for query command it might return
2008 * integer resulting value
2009 */
2010 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2011
2012 /* frame parsing */
2013 typedef struct AVCodecParserContext {
2014 void *priv_data;
2015 struct AVCodecParser *parser;
2016 int64_t frame_offset; /* offset of the current frame */
2017 int64_t cur_offset; /* current offset
2018 (incremented by each av_parser_parse()) */
2019 int64_t last_frame_offset; /* offset of the last frame */
2020 /* video info */
2021 int pict_type; /* XXX: put it back in AVCodecContext */
2022 int repeat_pict; /* XXX: put it back in AVCodecContext */
2023 int64_t pts; /* pts of the current frame */
2024 int64_t dts; /* dts of the current frame */
2025
2026 /* private data */
2027 int64_t last_pts;
2028 int64_t last_dts;
2029
2030 #define AV_PARSER_PTS_NB 4
2031 int cur_frame_start_index;
2032 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2033 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2034 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2035 } AVCodecParserContext;
2036
2037 typedef struct AVCodecParser {
2038 int codec_ids[3]; /* several codec IDs are permitted */
2039 int priv_data_size;
2040 int (*parser_init)(AVCodecParserContext *s);
2041 int (*parser_parse)(AVCodecParserContext *s,
2042 AVCodecContext *avctx,
2043 uint8_t **poutbuf, int *poutbuf_size,
2044 const uint8_t *buf, int buf_size);
2045 void (*parser_close)(AVCodecParserContext *s);
2046 struct AVCodecParser *next;
2047 } AVCodecParser;
2048
2049 extern AVCodecParser *av_first_parser;
2050
2051 void av_register_codec_parser(AVCodecParser *parser);
2052 AVCodecParserContext *av_parser_init(int codec_id);
2053 int av_parser_parse(AVCodecParserContext *s,
2054 AVCodecContext *avctx,
2055 uint8_t **poutbuf, int *poutbuf_size,
2056 const uint8_t *buf, int buf_size,
2057 int64_t pts, int64_t dts);
2058 void av_parser_close(AVCodecParserContext *s);
2059
2060 extern AVCodecParser mpegvideo_parser;
2061 extern AVCodecParser mpeg4video_parser;
2062 extern AVCodecParser h263_parser;
2063 extern AVCodecParser h264_parser;
2064 extern AVCodecParser mpegaudio_parser;
2065 extern AVCodecParser ac3_parser;
2066
2067 /* memory */
2068 void *av_malloc(unsigned int size);
2069 void *av_mallocz(unsigned int size);
2070 void *av_realloc(void *ptr, unsigned int size);
2071 void av_free(void *ptr);
2072 char *av_strdup(const char *s);
2073 void __av_freep(void **ptr);
2074 #define av_freep(p) __av_freep((void **)(p))
2075 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2076 /* for static data only */
2077 /* call av_free_static to release all staticaly allocated tables */
2078 void av_free_static(void);
2079 void *__av_mallocz_static(void** location, unsigned int size);
2080 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2081
2082 /* add by bero : in adx.c */
2083 int is_adx(const unsigned char *buf,size_t bufsize);
2084
2085 void img_copy(AVPicture *dst, const AVPicture *src,
2086 int pix_fmt, int width, int height);
2087
2088 /* av_log API */
2089
2090 #include <stdarg.h>
2091
2092 #define AV_LOG_ERROR 0
2093 #define AV_LOG_INFO 1
2094 #define AV_LOG_DEBUG 2
2095
2096 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2097 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2098 extern int av_log_get_level(void);
2099 extern void av_log_set_level(int);
2100 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2101
2102 #undef AV_LOG_TRAP_PRINTF
2103 #ifdef AV_LOG_TRAP_PRINTF
2104 #define printf DO NOT USE
2105 #define fprintf DO NOT USE
2106 #undef stderr
2107 #define stderr DO NOT USE
2108 #endif
2109
2110 #ifdef __cplusplus
2111 }
2112 #endif
2113
2114 #endif /* AVCODEC_H */