4f15221a334c448fe109e8a7d96be2e2bb2d6639
[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 4704
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 #define FF_QSCALE_TYPE_MPEG1 0
534 #define FF_QSCALE_TYPE_MPEG2 1
535
536 #define FF_BUFFER_TYPE_INTERNAL 1
537 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
538 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
539 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
540
541
542 #define FF_I_TYPE 1 // Intra
543 #define FF_P_TYPE 2 // Predicted
544 #define FF_B_TYPE 3 // Bi-dir predicted
545 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
546 #define FF_SI_TYPE 5
547 #define FF_SP_TYPE 6
548
549 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
550 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
551 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
552 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
553
554 /**
555 * Audio Video Frame.
556 */
557 typedef struct AVFrame {
558 FF_COMMON_FRAME
559 } AVFrame;
560
561 #define DEFAULT_FRAME_RATE_BASE 1001000
562
563 /**
564 * main external api structure.
565 */
566 typedef struct AVCodecContext {
567 /**
568 * the average bitrate.
569 * - encoding: set by user. unused for constant quantizer encoding
570 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
571 */
572 int bit_rate;
573
574 /**
575 * number of bits the bitstream is allowed to diverge from the reference.
576 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
577 * - encoding: set by user. unused for constant quantizer encoding
578 * - decoding: unused
579 */
580 int bit_rate_tolerance;
581
582 /**
583 * CODEC_FLAG_*.
584 * - encoding: set by user.
585 * - decoding: set by user.
586 */
587 int flags;
588
589 /**
590 * some codecs needs additionnal format info. It is stored here
591 * - encoding: set by user.
592 * - decoding: set by lavc. (FIXME is this ok?)
593 */
594 int sub_id;
595
596 /**
597 * motion estimation algorithm used for video coding.
598 * - encoding: MUST be set by user.
599 * - decoding: unused
600 */
601 int me_method;
602
603 /**
604 * some codecs need / can use extra-data like huffman tables.
605 * mjpeg: huffman tables
606 * rv10: additional flags
607 * mpeg4: global headers (they can be in the bitstream or here)
608 * - encoding: set/allocated/freed by lavc.
609 * - decoding: set/allocated/freed by user.
610 */
611 void *extradata;
612 int extradata_size;
613
614 /* video only */
615 /**
616 * frames per sec multiplied by frame_rate_base.
617 * for variable fps this is the precission, so if the timestamps
618 * can be specified in msec precssion then this is 1000*frame_rate_base
619 * - encoding: MUST be set by user
620 * - decoding: set by lavc. 0 or the frame_rate if available
621 */
622 int frame_rate;
623
624 /**
625 * width / height.
626 * - encoding: MUST be set by user.
627 * - decoding: set by user if known, codec should override / dynamically change if needed
628 */
629 int width, height;
630
631 #define FF_ASPECT_EXTENDED 15
632
633 /**
634 * the number of pictures in a group of pitures, or 0 for intra_only.
635 * - encoding: set by user.
636 * - decoding: unused
637 */
638 int gop_size;
639
640 /**
641 * pixel format, see PIX_FMT_xxx.
642 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
643 * conversion is in order. This only works for
644 * codecs with one supported pix_fmt, we should
645 * do something for a generic case as well.
646 * - decoding: set by lavc.
647 */
648 enum PixelFormat pix_fmt;
649
650 /**
651 * Frame rate emulation. If not zero lower layer (i.e. format handler)
652 * has to read frames at native frame rate.
653 * - encoding: set by user.
654 * - decoding: unused.
655 */
656 int rate_emu;
657
658 /**
659 * if non NULL, 'draw_horiz_band' is called by the libavcodec
660 * decoder to draw an horizontal band. It improve cache usage. Not
661 * all codecs can do that. You must check the codec capabilities
662 * before
663 * - encoding: unused
664 * - decoding: set by user.
665 * @param height the height of the slice
666 * @param y the y position of the slice
667 * @param type 1->top field, 2->bottom field, 3->frame
668 * @param offset offset into the AVFrame.data from which the slice should be read
669 */
670 void (*draw_horiz_band)(struct AVCodecContext *s,
671 const AVFrame *src, int offset[4],
672 int y, int type, int height);
673
674 /* audio only */
675 int sample_rate; ///< samples per sec
676 int channels;
677 int sample_fmt; ///< sample format, currenly unused
678
679 /* the following data should not be initialized */
680 int frame_size; ///< in samples, initialized when calling 'init'
681 int frame_number; ///< audio or video frame number
682 int real_pict_num; ///< returns the real picture number of previous encoded frame
683
684 /**
685 * number of frames the decoded output will be delayed relative to
686 * the encoded input.
687 * - encoding: set by lavc.
688 * - decoding: unused
689 */
690 int delay;
691
692 /* - encoding parameters */
693 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
694 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
695
696 /**
697 * minimum quantizer.
698 * - encoding: set by user.
699 * - decoding: unused
700 */
701 int qmin;
702
703 /**
704 * maximum quantizer.
705 * - encoding: set by user.
706 * - decoding: unused
707 */
708 int qmax;
709
710 /**
711 * maximum quantizer difference etween frames.
712 * - encoding: set by user.
713 * - decoding: unused
714 */
715 int max_qdiff;
716
717 /**
718 * maximum number of b frames between non b frames.
719 * note: the output will be delayed by max_b_frames+1 relative to the input
720 * - encoding: set by user.
721 * - decoding: unused
722 */
723 int max_b_frames;
724
725 /**
726 * qscale factor between ip and b frames.
727 * - encoding: set by user.
728 * - decoding: unused
729 */
730 float b_quant_factor;
731
732 /** obsolete FIXME remove */
733 int rc_strategy;
734 int b_frame_strategy;
735
736 /**
737 * hurry up amount.
738 * - encoding: unused
739 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
740 */
741 int hurry_up;
742
743 struct AVCodec *codec;
744
745 void *priv_data;
746
747 /* unused, FIXME remove*/
748 int rtp_mode;
749
750 int rtp_payload_size; /* The size of the RTP payload, the coder will */
751 /* do it's best to deliver a chunk with size */
752 /* below rtp_payload_size, the chunk will start */
753 /* with a start code on some codecs like H.263 */
754 /* This doesn't take account of any particular */
755 /* headers inside the transmited RTP payload */
756
757
758 /* The RTP callcack: This function is called */
759 /* every time the encoder as a packet to send */
760 /* Depends on the encoder if the data starts */
761 /* with a Start Code (it should) H.263 does */
762 void (*rtp_callback)(void *data, int size, int packet_number);
763
764 /* statistics, used for 2-pass encoding */
765 int mv_bits;
766 int header_bits;
767 int i_tex_bits;
768 int p_tex_bits;
769 int i_count;
770 int p_count;
771 int skip_count;
772 int misc_bits;
773
774 /**
775 * number of bits used for the previously encoded frame.
776 * - encoding: set by lavc
777 * - decoding: unused
778 */
779 int frame_bits;
780
781 /**
782 * private data of the user, can be used to carry app specific stuff.
783 * - encoding: set by user
784 * - decoding: set by user
785 */
786 void *opaque;
787
788 char codec_name[32];
789 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
790 enum CodecID codec_id; /* see CODEC_ID_xxx */
791
792 /**
793 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
794 * this is used to workaround some encoder bugs
795 * - encoding: set by user, if not then the default based on codec_id will be used
796 * - decoding: set by user, will be converted to upper case by lavc during init
797 */
798 unsigned int codec_tag;
799
800 /**
801 * workaround bugs in encoders which sometimes cannot be detected automatically.
802 * - encoding: unused
803 * - decoding: set by user
804 */
805 int workaround_bugs;
806 #define FF_BUG_AUTODETECT 1 ///< autodetection
807 #define FF_BUG_OLD_MSMPEG4 2
808 #define FF_BUG_XVID_ILACE 4
809 #define FF_BUG_UMP4 8
810 #define FF_BUG_NO_PADDING 16
811 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
812 #define FF_BUG_QPEL_CHROMA 64
813 #define FF_BUG_STD_QPEL 128
814 #define FF_BUG_QPEL_CHROMA2 256
815 #define FF_BUG_DIRECT_BLOCKSIZE 512
816 #define FF_BUG_EDGE 1024
817 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
818
819 /**
820 * luma single coeff elimination threshold.
821 * - encoding: set by user
822 * - decoding: unused
823 */
824 int luma_elim_threshold;
825
826 /**
827 * chroma single coeff elimination threshold.
828 * - encoding: set by user
829 * - decoding: unused
830 */
831 int chroma_elim_threshold;
832
833 /**
834 * strictly follow the std (MPEG4, ...).
835 * - encoding: set by user
836 * - decoding: unused
837 */
838 int strict_std_compliance;
839
840 /**
841 * qscale offset between ip and b frames.
842 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
843 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
844 * - encoding: set by user.
845 * - decoding: unused
846 */
847 float b_quant_offset;
848
849 /**
850 * error resilience higher values will detect more errors but may missdetect
851 * some more or less valid parts as errors.
852 * - encoding: unused
853 * - decoding: set by user
854 */
855 int error_resilience;
856 #define FF_ER_CAREFULL 1
857 #define FF_ER_COMPLIANT 2
858 #define FF_ER_AGGRESSIVE 3
859 #define FF_ER_VERY_AGGRESSIVE 4
860
861 /**
862 * called at the beginning of each frame to get a buffer for it.
863 * if pic.reference is set then the frame will be read later by lavc
864 * width and height should be rounded up to the next multiple of 16
865 * - encoding: unused
866 * - decoding: set by lavc, user can override
867 */
868 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
869
870 /**
871 * called to release buffers which where allocated with get_buffer.
872 * a released buffer can be reused in get_buffer()
873 * pic.data[*] must be set to NULL
874 * - encoding: unused
875 * - decoding: set by lavc, user can override
876 */
877 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
878
879 /**
880 * is 1 if the decoded stream contains b frames, 0 otherwise.
881 * - encoding: unused
882 * - decoding: set by lavc
883 */
884 int has_b_frames;
885
886 int block_align; ///< used by some WAV based audio codecs
887
888 int parse_only; /* - decoding only: if true, only parsing is done
889 (function avcodec_parse_frame()). The frame
890 data is returned. Only MPEG codecs support this now. */
891
892 /**
893 * 0-> h263 quant 1-> mpeg quant.
894 * - encoding: set by user.
895 * - decoding: unused
896 */
897 int mpeg_quant;
898
899 /**
900 * pass1 encoding statistics output buffer.
901 * - encoding: set by lavc
902 * - decoding: unused
903 */
904 char *stats_out;
905
906 /**
907 * pass2 encoding statistics input buffer.
908 * concatenated stuff from stats_out of pass1 should be placed here
909 * - encoding: allocated/set/freed by user
910 * - decoding: unused
911 */
912 char *stats_in;
913
914 /**
915 * ratecontrol qmin qmax limiting method.
916 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
917 * - encoding: set by user.
918 * - decoding: unused
919 */
920 float rc_qsquish;
921
922 float rc_qmod_amp;
923 int rc_qmod_freq;
924
925 /**
926 * ratecontrol override, see RcOverride.
927 * - encoding: allocated/set/freed by user.
928 * - decoding: unused
929 */
930 RcOverride *rc_override;
931 int rc_override_count;
932
933 /**
934 * rate control equation.
935 * - encoding: set by user
936 * - decoding: unused
937 */
938 char *rc_eq;
939
940 /**
941 * maximum bitrate.
942 * - encoding: set by user.
943 * - decoding: unused
944 */
945 int rc_max_rate;
946
947 /**
948 * minimum bitrate.
949 * - encoding: set by user.
950 * - decoding: unused
951 */
952 int rc_min_rate;
953
954 /**
955 * decoder bitstream buffer size.
956 * - encoding: set by user.
957 * - decoding: unused
958 */
959 int rc_buffer_size;
960 float rc_buffer_aggressivity;
961
962 /**
963 * qscale factor between p and i frames.
964 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
965 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
966 * - encoding: set by user.
967 * - decoding: unused
968 */
969 float i_quant_factor;
970
971 /**
972 * qscale offset between p and i frames.
973 * - encoding: set by user.
974 * - decoding: unused
975 */
976 float i_quant_offset;
977
978 /**
979 * initial complexity for pass1 ratecontrol.
980 * - encoding: set by user.
981 * - decoding: unused
982 */
983 float rc_initial_cplx;
984
985 /**
986 * dct algorithm, see FF_DCT_* below.
987 * - encoding: set by user
988 * - decoding: unused
989 */
990 int dct_algo;
991 #define FF_DCT_AUTO 0
992 #define FF_DCT_FASTINT 1
993 #define FF_DCT_INT 2
994 #define FF_DCT_MMX 3
995 #define FF_DCT_MLIB 4
996 #define FF_DCT_ALTIVEC 5
997 #define FF_DCT_FAAN 6
998
999 /**
1000 * luminance masking (0-> disabled).
1001 * - encoding: set by user
1002 * - decoding: unused
1003 */
1004 float lumi_masking;
1005
1006 /**
1007 * temporary complexity masking (0-> disabled).
1008 * - encoding: set by user
1009 * - decoding: unused
1010 */
1011 float temporal_cplx_masking;
1012
1013 /**
1014 * spatial complexity masking (0-> disabled).
1015 * - encoding: set by user
1016 * - decoding: unused
1017 */
1018 float spatial_cplx_masking;
1019
1020 /**
1021 * p block masking (0-> disabled).
1022 * - encoding: set by user
1023 * - decoding: unused
1024 */
1025 float p_masking;
1026
1027 /**
1028 * darkness masking (0-> disabled).
1029 * - encoding: set by user
1030 * - decoding: unused
1031 */
1032 float dark_masking;
1033
1034
1035 /* for binary compatibility */
1036 int unused;
1037
1038 /**
1039 * idct algorithm, see FF_IDCT_* below.
1040 * - encoding: set by user
1041 * - decoding: set by user
1042 */
1043 int idct_algo;
1044 #define FF_IDCT_AUTO 0
1045 #define FF_IDCT_INT 1
1046 #define FF_IDCT_SIMPLE 2
1047 #define FF_IDCT_SIMPLEMMX 3
1048 #define FF_IDCT_LIBMPEG2MMX 4
1049 #define FF_IDCT_PS2 5
1050 #define FF_IDCT_MLIB 6
1051 #define FF_IDCT_ARM 7
1052 #define FF_IDCT_ALTIVEC 8
1053 #define FF_IDCT_SH4 9
1054 #define FF_IDCT_SIMPLEARM 10
1055
1056 /**
1057 * slice count.
1058 * - encoding: set by lavc
1059 * - decoding: set by user (or 0)
1060 */
1061 int slice_count;
1062 /**
1063 * slice offsets in the frame in bytes.
1064 * - encoding: set/allocated by lavc
1065 * - decoding: set/allocated by user (or NULL)
1066 */
1067 int *slice_offset;
1068
1069 /**
1070 * error concealment flags.
1071 * - encoding: unused
1072 * - decoding: set by user
1073 */
1074 int error_concealment;
1075 #define FF_EC_GUESS_MVS 1
1076 #define FF_EC_DEBLOCK 2
1077
1078 /**
1079 * dsp_mask could be add used to disable unwanted CPU features
1080 * CPU features (i.e. MMX, SSE. ...)
1081 *
1082 * with FORCE flag you may instead enable given CPU features
1083 * (Dangerous: usable in case of misdetection, improper usage however will
1084 * result into program crash)
1085 */
1086 unsigned dsp_mask;
1087 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1088 /* lower 16 bits - CPU features */
1089 #ifdef HAVE_MMX
1090 #define FF_MM_MMX 0x0001 /* standard MMX */
1091 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1092 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1093 #define FF_MM_SSE 0x0008 /* SSE functions */
1094 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1095 #endif /* HAVE_MMX */
1096
1097 /**
1098 * bits per sample/pixel from the demuxer (needed for huffyuv).
1099 * - encoding: set by lavc
1100 * - decoding: set by user
1101 */
1102 int bits_per_sample;
1103
1104 /**
1105 * prediction method (needed for huffyuv).
1106 * - encoding: set by user
1107 * - decoding: unused
1108 */
1109 int prediction_method;
1110 #define FF_PRED_LEFT 0
1111 #define FF_PRED_PLANE 1
1112 #define FF_PRED_MEDIAN 2
1113
1114 /**
1115 * sample aspect ratio (0 if unknown).
1116 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1117 * - encoding: set by user.
1118 * - decoding: set by lavc.
1119 */
1120 AVRational sample_aspect_ratio;
1121
1122 /**
1123 * the picture in the bitstream.
1124 * - encoding: set by lavc
1125 * - decoding: set by lavc
1126 */
1127 AVFrame *coded_frame;
1128
1129 /**
1130 * debug.
1131 * - encoding: set by user.
1132 * - decoding: set by user.
1133 */
1134 int debug;
1135 #define FF_DEBUG_PICT_INFO 1
1136 #define FF_DEBUG_RC 2
1137 #define FF_DEBUG_BITSTREAM 4
1138 #define FF_DEBUG_MB_TYPE 8
1139 #define FF_DEBUG_QP 16
1140 #define FF_DEBUG_MV 32
1141 //#define FF_DEBUG_VIS_MV 0x00000040
1142 #define FF_DEBUG_SKIP 0x00000080
1143 #define FF_DEBUG_STARTCODE 0x00000100
1144 #define FF_DEBUG_PTS 0x00000200
1145 #define FF_DEBUG_ER 0x00000400
1146 #define FF_DEBUG_MMCO 0x00000800
1147 #define FF_DEBUG_BUGS 0x00001000
1148 #define FF_DEBUG_VIS_QP 0x00002000
1149 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1150
1151 /**
1152 * debug.
1153 * - encoding: set by user.
1154 * - decoding: set by user.
1155 */
1156 int debug_mv;
1157 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1158 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1159 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1160
1161 /**
1162 * error.
1163 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1164 * - decoding: unused
1165 */
1166 uint64_t error[4];
1167
1168 /**
1169 * minimum MB quantizer.
1170 * - encoding: set by user.
1171 * - decoding: unused
1172 */
1173 int mb_qmin;
1174
1175 /**
1176 * maximum MB quantizer.
1177 * - encoding: set by user.
1178 * - decoding: unused
1179 */
1180 int mb_qmax;
1181
1182 /**
1183 * motion estimation compare function.
1184 * - encoding: set by user.
1185 * - decoding: unused
1186 */
1187 int me_cmp;
1188 /**
1189 * subpixel motion estimation compare function.
1190 * - encoding: set by user.
1191 * - decoding: unused
1192 */
1193 int me_sub_cmp;
1194 /**
1195 * macroblock compare function (not supported yet).
1196 * - encoding: set by user.
1197 * - decoding: unused
1198 */
1199 int mb_cmp;
1200 /**
1201 * interlaced dct compare function
1202 * - encoding: set by user.
1203 * - decoding: unused
1204 */
1205 int ildct_cmp;
1206 #define FF_CMP_SAD 0
1207 #define FF_CMP_SSE 1
1208 #define FF_CMP_SATD 2
1209 #define FF_CMP_DCT 3
1210 #define FF_CMP_PSNR 4
1211 #define FF_CMP_BIT 5
1212 #define FF_CMP_RD 6
1213 #define FF_CMP_ZERO 7
1214 #define FF_CMP_VSAD 8
1215 #define FF_CMP_VSSE 9
1216 #define FF_CMP_CHROMA 256
1217
1218 /**
1219 * ME diamond size & shape.
1220 * - encoding: set by user.
1221 * - decoding: unused
1222 */
1223 int dia_size;
1224
1225 /**
1226 * amount of previous MV predictors (2a+1 x 2a+1 square).
1227 * - encoding: set by user.
1228 * - decoding: unused
1229 */
1230 int last_predictor_count;
1231
1232 /**
1233 * pre pass for motion estimation.
1234 * - encoding: set by user.
1235 * - decoding: unused
1236 */
1237 int pre_me;
1238
1239 /**
1240 * motion estimation pre pass compare function.
1241 * - encoding: set by user.
1242 * - decoding: unused
1243 */
1244 int me_pre_cmp;
1245
1246 /**
1247 * ME pre pass diamond size & shape.
1248 * - encoding: set by user.
1249 * - decoding: unused
1250 */
1251 int pre_dia_size;
1252
1253 /**
1254 * subpel ME quality.
1255 * - encoding: set by user.
1256 * - decoding: unused
1257 */
1258 int me_subpel_quality;
1259
1260 /**
1261 * callback to negotiate the pixelFormat.
1262 * @param fmt is the list of formats which are supported by the codec,
1263 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1264 * the first is allways the native one
1265 * @return the choosen format
1266 * - encoding: unused
1267 * - decoding: set by user, if not set then the native format will always be choosen
1268 */
1269 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1270
1271 /**
1272 * DTG active format information (additionnal aspect ratio
1273 * information only used in DVB MPEG2 transport streams). 0 if
1274 * not set.
1275 *
1276 * - encoding: unused.
1277 * - decoding: set by decoder
1278 */
1279 int dtg_active_format;
1280 #define FF_DTG_AFD_SAME 8
1281 #define FF_DTG_AFD_4_3 9
1282 #define FF_DTG_AFD_16_9 10
1283 #define FF_DTG_AFD_14_9 11
1284 #define FF_DTG_AFD_4_3_SP_14_9 13
1285 #define FF_DTG_AFD_16_9_SP_14_9 14
1286 #define FF_DTG_AFD_SP_4_3 15
1287
1288 /**
1289 * Maximum motion estimation search range in subpel units.
1290 * if 0 then no limit
1291 *
1292 * - encoding: set by user.
1293 * - decoding: unused.
1294 */
1295 int me_range;
1296
1297 /**
1298 * frame_rate_base.
1299 * for variable fps this is 1
1300 * - encoding: set by user.
1301 * - decoding: set by lavc.
1302 * @todo move this after frame_rate
1303 */
1304
1305 int frame_rate_base;
1306 /**
1307 * intra quantizer bias.
1308 * - encoding: set by user.
1309 * - decoding: unused
1310 */
1311 int intra_quant_bias;
1312 #define FF_DEFAULT_QUANT_BIAS 999999
1313
1314 /**
1315 * inter quantizer bias.
1316 * - encoding: set by user.
1317 * - decoding: unused
1318 */
1319 int inter_quant_bias;
1320
1321 /**
1322 * color table ID.
1323 * - encoding: unused.
1324 * - decoding: which clrtable should be used for 8bit RGB images
1325 * table have to be stored somewhere FIXME
1326 */
1327 int color_table_id;
1328
1329 /**
1330 * internal_buffer count.
1331 * Dont touch, used by lavc default_get_buffer()
1332 */
1333 int internal_buffer_count;
1334
1335 /**
1336 * internal_buffers.
1337 * Dont touch, used by lavc default_get_buffer()
1338 */
1339 void *internal_buffer;
1340
1341 #define FF_LAMBDA_SHIFT 7
1342 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1343 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1344 #define FF_LAMBDA_MAX (256*128-1)
1345
1346 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1347 /**
1348 * global quality for codecs which cannot change it per frame.
1349 * this should be proportional to MPEG1/2/4 qscale.
1350 * - encoding: set by user.
1351 * - decoding: unused
1352 */
1353 int global_quality;
1354
1355 #define FF_CODER_TYPE_VLC 0
1356 #define FF_CODER_TYPE_AC 1
1357 /**
1358 * coder type
1359 * - encoding: set by user.
1360 * - decoding: unused
1361 */
1362 int coder_type;
1363
1364 /**
1365 * context model
1366 * - encoding: set by user.
1367 * - decoding: unused
1368 */
1369 int context_model;
1370
1371 /**
1372 * slice flags
1373 * - encoding: unused
1374 * - decoding: set by user.
1375 */
1376 int slice_flags;
1377 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1378 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1379 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1380
1381 /**
1382 * XVideo Motion Acceleration
1383 * - encoding: forbidden
1384 * - decoding: set by decoder
1385 */
1386 int xvmc_acceleration;
1387
1388 /**
1389 * macroblock decision mode
1390 * - encoding: set by user.
1391 * - decoding: unused
1392 */
1393 int mb_decision;
1394 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1395 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1396 #define FF_MB_DECISION_RD 2 ///< rate distoration
1397
1398 /**
1399 * custom intra quantization matrix
1400 * - encoding: set by user, can be NULL
1401 * - decoding: set by lavc
1402 */
1403 uint16_t *intra_matrix;
1404
1405 /**
1406 * custom inter quantization matrix
1407 * - encoding: set by user, can be NULL
1408 * - decoding: set by lavc
1409 */
1410 uint16_t *inter_matrix;
1411
1412 /**
1413 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1414 * this is used to workaround some encoder bugs
1415 * - encoding: unused
1416 * - decoding: set by user, will be converted to upper case by lavc during init
1417 */
1418 unsigned int stream_codec_tag;
1419
1420 /**
1421 * scene change detection threshold.
1422 * 0 is default, larger means fewer detected scene changes
1423 * - encoding: set by user.
1424 * - decoding: unused
1425 */
1426 int scenechange_threshold;
1427
1428 /**
1429 * minimum lagrange multipler
1430 * - encoding: set by user.
1431 * - decoding: unused
1432 */
1433 int lmin;
1434
1435 /**
1436 * maximum lagrange multipler
1437 * - encoding: set by user.
1438 * - decoding: unused
1439 */
1440 int lmax;
1441
1442 /**
1443 * Palette control structure
1444 * - encoding: ??? (no palette-enabled encoder yet)
1445 * - decoding: set by user.
1446 */
1447 struct AVPaletteControl *palctrl;
1448
1449 /**
1450 * noise reduction strength
1451 * - encoding: set by user.
1452 * - decoding: unused
1453 */
1454 int noise_reduction;
1455
1456 /**
1457 * called at the beginning of a frame to get cr buffer for it.
1458 * buffer type (size, hints) must be the same. lavc won't check it.
1459 * lavc will pass previous buffer in pic, function should return
1460 * same buffer or new buffer with old frame "painted" into it.
1461 * if pic.data[0] == NULL must behave like get_buffer().
1462 * - encoding: unused
1463 * - decoding: set by lavc, user can override
1464 */
1465 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1466
1467 /**
1468 * number of bits which should be loaded into the rc buffer before decoding starts
1469 * - encoding: set by user.
1470 * - decoding: unused
1471 */
1472 int rc_initial_buffer_occupancy;
1473
1474 /**
1475 *
1476 * - encoding: set by user.
1477 * - decoding: unused
1478 */
1479 int inter_threshold;
1480
1481 /**
1482 * CODEC_FLAG2_*.
1483 * - encoding: set by user.
1484 * - decoding: set by user.
1485 */
1486 int flags2;
1487
1488 /**
1489 * simulates errors in the bitstream to test error concealment.
1490 * - encoding: set by user.
1491 * - decoding: unused.
1492 */
1493 int error_rate;
1494
1495 /**
1496 * MP3 antialias algorithm, see FF_AA_* below.
1497 * - encoding: unused
1498 * - decoding: set by user
1499 */
1500 int antialias_algo;
1501 #define FF_AA_AUTO 0
1502 #define FF_AA_FASTINT 1 //not implemented yet
1503 #define FF_AA_INT 2
1504 #define FF_AA_FLOAT 3
1505 /**
1506 * Quantizer noise shaping.
1507 * - encoding: set by user
1508 * - decoding: unused
1509 */
1510 int quantizer_noise_shaping;
1511
1512 /**
1513 * Thread count.
1514 * is used to decide how many independant tasks should be passed to execute()
1515 * - encoding: set by user
1516 * - decoding: set by user
1517 */
1518 int thread_count;
1519
1520 /**
1521 * the codec may call this to execute several independant things. it will return only after
1522 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1523 * default implementation will execute the parts serially
1524 * @param count the number of functions this will be identical to thread_count if possible
1525 * - encoding: set by lavc, user can override
1526 * - decoding: set by lavc, user can override
1527 */
1528 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1529
1530 /**
1531 * Thread opaque.
1532 * can be used by execute() to store some per AVCodecContext stuff.
1533 * - encoding: set by execute()
1534 * - decoding: set by execute()
1535 */
1536 void *thread_opaque;
1537 } AVCodecContext;
1538
1539
1540 /**
1541 * AVOption.
1542 */
1543 typedef struct AVOption {
1544 /** options' name */
1545 const char *name; /* if name is NULL, it indicates a link to next */
1546 /** short English text help or const struct AVOption* subpointer */
1547 const char *help; // const struct AVOption* sub;
1548 /** offset to context structure where the parsed value should be stored */
1549 int offset;
1550 /** options' type */
1551 int type;
1552 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1553 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1554 #define FF_OPT_TYPE_INT 3 ///< integer
1555 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1556 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1557 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1558 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1559 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1560 /** min value (min == max -> no limits) */
1561 double min;
1562 /** maximum value for double/int */
1563 double max;
1564 /** default boo [0,1]l/double/int value */
1565 double defval;
1566 /**
1567 * default string value (with optional semicolon delimited extra option-list
1568 * i.e. option1;option2;option3
1569 * defval might select other then first argument as default
1570 */
1571 const char *defstr;
1572 #define FF_OPT_MAX_DEPTH 10
1573 } AVOption;
1574
1575 /**
1576 * Parse option(s) and sets fields in passed structure
1577 * @param strct structure where the parsed results will be written
1578 * @param list list with AVOptions
1579 * @param opts string with options for parsing
1580 */
1581 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1582
1583
1584 /**
1585 * AVCodec.
1586 */
1587 typedef struct AVCodec {
1588 const char *name;
1589 enum CodecType type;
1590 int id;
1591 int priv_data_size;
1592 int (*init)(AVCodecContext *);
1593 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1594 int (*close)(AVCodecContext *);
1595 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1596 uint8_t *buf, int buf_size);
1597 int capabilities;
1598 const AVOption *options;
1599 struct AVCodec *next;
1600 void (*flush)(AVCodecContext *);
1601 } AVCodec;
1602
1603 /**
1604 * four components are given, that's all.
1605 * the last component is alpha
1606 */
1607 typedef struct AVPicture {
1608 uint8_t *data[4];
1609 int linesize[4]; ///< number of bytes per line
1610 } AVPicture;
1611
1612 /**
1613 * AVPaletteControl
1614 * This structure defines a method for communicating palette changes
1615 * between and demuxer and a decoder.
1616 */
1617 #define AVPALETTE_SIZE 1024
1618 #define AVPALETTE_COUNT 256
1619 typedef struct AVPaletteControl {
1620
1621 /* demuxer sets this to 1 to indicate the palette has changed;
1622 * decoder resets to 0 */
1623 int palette_changed;
1624
1625 /* 4-byte ARGB palette entries, stored in native byte order; note that
1626 * the individual palette components should be on a 8-bit scale; if
1627 * the palette data comes from a IBM VGA native format, the component
1628 * data is probably 6 bits in size and needs to be scaled */
1629 unsigned int palette[AVPALETTE_COUNT];
1630
1631 } AVPaletteControl;
1632
1633 extern AVCodec ac3_encoder;
1634 extern AVCodec mp2_encoder;
1635 extern AVCodec mp3lame_encoder;
1636 extern AVCodec oggvorbis_encoder;
1637 extern AVCodec faac_encoder;
1638 extern AVCodec mpeg1video_encoder;
1639 extern AVCodec mpeg2video_encoder;
1640 extern AVCodec h263_encoder;
1641 extern AVCodec h263p_encoder;
1642 extern AVCodec flv_encoder;
1643 extern AVCodec rv10_encoder;
1644 extern AVCodec rv20_encoder;
1645 extern AVCodec mjpeg_encoder;
1646 extern AVCodec ljpeg_encoder;
1647 extern AVCodec mpeg4_encoder;
1648 extern AVCodec msmpeg4v1_encoder;
1649 extern AVCodec msmpeg4v2_encoder;
1650 extern AVCodec msmpeg4v3_encoder;
1651 extern AVCodec wmv1_encoder;
1652 extern AVCodec wmv2_encoder;
1653 extern AVCodec huffyuv_encoder;
1654 extern AVCodec h264_encoder;
1655 extern AVCodec asv1_encoder;
1656 extern AVCodec asv2_encoder;
1657 extern AVCodec vcr1_encoder;
1658 extern AVCodec ffv1_encoder;
1659 extern AVCodec mdec_encoder;
1660 extern AVCodec zlib_encoder;
1661
1662 extern AVCodec h263_decoder;
1663 extern AVCodec mpeg4_decoder;
1664 extern AVCodec msmpeg4v1_decoder;
1665 extern AVCodec msmpeg4v2_decoder;
1666 extern AVCodec msmpeg4v3_decoder;
1667 extern AVCodec wmv1_decoder;
1668 extern AVCodec wmv2_decoder;
1669 extern AVCodec mpeg1video_decoder;
1670 extern AVCodec mpeg2video_decoder;
1671 extern AVCodec mpegvideo_decoder;
1672 extern AVCodec mpeg_xvmc_decoder;
1673 extern AVCodec h263i_decoder;
1674 extern AVCodec flv_decoder;
1675 extern AVCodec rv10_decoder;
1676 extern AVCodec rv20_decoder;
1677 extern AVCodec svq1_decoder;
1678 extern AVCodec svq3_decoder;
1679 extern AVCodec dvvideo_decoder;
1680 extern AVCodec wmav1_decoder;
1681 extern AVCodec wmav2_decoder;
1682 extern AVCodec mjpeg_decoder;
1683 extern AVCodec mjpegb_decoder;
1684 extern AVCodec sp5x_decoder;
1685 extern AVCodec mp2_decoder;
1686 extern AVCodec mp3_decoder;
1687 extern AVCodec mace3_decoder;
1688 extern AVCodec mace6_decoder;
1689 extern AVCodec huffyuv_decoder;
1690 extern AVCodec oggvorbis_decoder;
1691 extern AVCodec cyuv_decoder;
1692 extern AVCodec h264_decoder;
1693 extern AVCodec indeo3_decoder;
1694 extern AVCodec vp3_decoder;
1695 extern AVCodec theora_decoder;
1696 extern AVCodec amr_nb_decoder;
1697 extern AVCodec amr_nb_encoder;
1698 extern AVCodec amr_wb_encoder;
1699 extern AVCodec amr_wb_decoder;
1700 extern AVCodec aac_decoder;
1701 extern AVCodec mpeg4aac_decoder;
1702 extern AVCodec asv1_decoder;
1703 extern AVCodec asv2_decoder;
1704 extern AVCodec vcr1_decoder;
1705 extern AVCodec cljr_decoder;
1706 extern AVCodec ffv1_decoder;
1707 extern AVCodec fourxm_decoder;
1708 extern AVCodec mdec_decoder;
1709 extern AVCodec roq_decoder;
1710 extern AVCodec interplay_video_decoder;
1711 extern AVCodec xan_wc3_decoder;
1712 extern AVCodec rpza_decoder;
1713 extern AVCodec cinepak_decoder;
1714 extern AVCodec msrle_decoder;
1715 extern AVCodec msvideo1_decoder;
1716 extern AVCodec vqa_decoder;
1717 extern AVCodec idcin_decoder;
1718 extern AVCodec eightbps_decoder;
1719 extern AVCodec smc_decoder;
1720 extern AVCodec flic_decoder;
1721 extern AVCodec vmdvideo_decoder;
1722 extern AVCodec vmdaudio_decoder;
1723 extern AVCodec truemotion1_decoder;
1724 extern AVCodec mszh_decoder;
1725 extern AVCodec zlib_decoder;
1726 extern AVCodec ra_144_decoder;
1727 extern AVCodec ra_288_decoder;
1728 extern AVCodec roq_dpcm_decoder;
1729 extern AVCodec interplay_dpcm_decoder;
1730 extern AVCodec xan_dpcm_decoder;
1731 extern AVCodec qtrle_decoder;
1732 extern AVCodec flac_decoder;
1733
1734 /* pcm codecs */
1735 #define PCM_CODEC(id, name) \
1736 extern AVCodec name ## _decoder; \
1737 extern AVCodec name ## _encoder
1738
1739 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1740 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1741 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1742 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1743 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1744 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1745 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1746 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1747
1748 /* adpcm codecs */
1749
1750 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1751 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1752 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1753 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1754 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1755 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1756 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1757 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1758 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1759 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1760 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1761 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1762
1763 #undef PCM_CODEC
1764
1765 /* dummy raw video codec */
1766 extern AVCodec rawvideo_encoder;
1767 extern AVCodec rawvideo_decoder;
1768
1769 /* the following codecs use external GPL libs */
1770 extern AVCodec ac3_decoder;
1771
1772 /* resample.c */
1773
1774 struct ReSampleContext;
1775
1776 typedef struct ReSampleContext ReSampleContext;
1777
1778 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1779 int output_rate, int input_rate);
1780 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1781 void audio_resample_close(ReSampleContext *s);
1782
1783 /* YUV420 format is assumed ! */
1784
1785 struct ImgReSampleContext;
1786
1787 typedef struct ImgReSampleContext ImgReSampleContext;
1788
1789 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1790 int input_width, int input_height);
1791
1792 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1793 int iwidth, int iheight,
1794 int topBand, int bottomBand,
1795 int leftBand, int rightBand);
1796
1797 void img_resample(ImgReSampleContext *s,
1798 AVPicture *output, const AVPicture *input);
1799
1800 void img_resample_close(ImgReSampleContext *s);
1801
1802 /**
1803 * Allocate memory for a picture. Call avpicture_free to free it.
1804 *
1805 * @param picture the picture to be filled in.
1806 * @param pix_fmt the format of the picture.
1807 * @param width the width of the picture.
1808 * @param height the height of the picture.
1809 * @return 0 if successful, -1 if not.
1810 */
1811 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1812
1813 /* Free a picture previously allocated by avpicture_alloc. */
1814 void avpicture_free(AVPicture *picture);
1815
1816 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1817 int pix_fmt, int width, int height);
1818 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1819 unsigned char *dest, int dest_size);
1820 int avpicture_get_size(int pix_fmt, int width, int height);
1821 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1822 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1823 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1824
1825 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1826 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1827 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1828 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1829 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1830 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1831
1832 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1833 int has_alpha);
1834 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1835 int has_alpha, int *loss_ptr);
1836
1837 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1838 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1839 int img_get_alpha_info(const AVPicture *src,
1840 int pix_fmt, int width, int height);
1841
1842 /* convert among pixel formats */
1843 int img_convert(AVPicture *dst, int dst_pix_fmt,
1844 const AVPicture *src, int pix_fmt,
1845 int width, int height);
1846
1847 /* deinterlace a picture */
1848 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1849 int pix_fmt, int width, int height);
1850
1851 /* external high level API */
1852
1853 extern AVCodec *first_avcodec;
1854
1855 /* returns LIBAVCODEC_VERSION_INT constant */
1856 unsigned avcodec_version(void);
1857 /* returns LIBAVCODEC_BUILD constant */
1858 unsigned avcodec_build(void);
1859 void avcodec_init(void);
1860
1861 void register_avcodec(AVCodec *format);
1862 AVCodec *avcodec_find_encoder(enum CodecID id);
1863 AVCodec *avcodec_find_encoder_by_name(const char *name);
1864 AVCodec *avcodec_find_decoder(enum CodecID id);
1865 AVCodec *avcodec_find_decoder_by_name(const char *name);
1866 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1867
1868 void avcodec_get_context_defaults(AVCodecContext *s);
1869 AVCodecContext *avcodec_alloc_context(void);
1870 AVFrame *avcodec_alloc_frame(void);
1871
1872 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1873 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1874 void avcodec_default_free_buffers(AVCodecContext *s);
1875
1876 int avcodec_thread_init(AVCodecContext *s, int thread_count);
1877 void avcodec_thread_free(AVCodecContext *s);
1878 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1879 //FIXME func typedef
1880
1881 /**
1882 * opens / inits the AVCodecContext.
1883 * not thread save!
1884 */
1885 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1886
1887 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1888 int *frame_size_ptr,
1889 uint8_t *buf, int buf_size);
1890 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1891 int *got_picture_ptr,
1892 uint8_t *buf, int buf_size);
1893 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1894 int *data_size_ptr,
1895 uint8_t *buf, int buf_size);
1896 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1897 const short *samples);
1898 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1899 const AVFrame *pict);
1900
1901 int avcodec_close(AVCodecContext *avctx);
1902
1903 void avcodec_register_all(void);
1904
1905 void avcodec_flush_buffers(AVCodecContext *avctx);
1906
1907 /* misc usefull functions */
1908
1909 /**
1910 * returns a single letter to describe the picture type
1911 */
1912 char av_get_pict_type_char(int pict_type);
1913
1914 /**
1915 * reduce a fraction.
1916 * this is usefull for framerate calculations
1917 * @param max the maximum allowed for dst_nom & dst_den
1918 * @return 1 if exact, 0 otherwise
1919 */
1920 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1921
1922 /**
1923 * rescale a 64bit integer.
1924 * a simple a*b/c isnt possible as it can overflow
1925 */
1926 int64_t av_rescale(int64_t a, int b, int c);
1927
1928
1929 /**
1930 * Interface for 0.5.0 version
1931 *
1932 * do not even think about it's usage for this moment
1933 */
1934
1935 typedef struct {
1936 /// compressed size used from given memory buffer
1937 int size;
1938 /// I/P/B frame type
1939 int frame_type;
1940 } avc_enc_result_t;
1941
1942 /**
1943 * Commands
1944 * order can't be changed - once it was defined
1945 */
1946 typedef enum {
1947 // general commands
1948 AVC_OPEN_BY_NAME = 0xACA000,
1949 AVC_OPEN_BY_CODEC_ID,
1950 AVC_OPEN_BY_FOURCC,
1951 AVC_CLOSE,
1952
1953 AVC_FLUSH,
1954 // pin - struct { uint8_t* src, uint_t src_size }
1955 // pout - struct { AVPicture* img, consumed_bytes,
1956 AVC_DECODE,
1957 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1958 // pout - uint_t used_from_dest_size
1959 AVC_ENCODE,
1960
1961 // query/get video commands
1962 AVC_GET_VERSION = 0xACB000,
1963 AVC_GET_WIDTH,
1964 AVC_GET_HEIGHT,
1965 AVC_GET_DELAY,
1966 AVC_GET_QUANT_TABLE,
1967 // ...
1968
1969 // query/get audio commands
1970 AVC_GET_FRAME_SIZE = 0xABC000,
1971
1972 // maybe define some simple structure which
1973 // might be passed to the user - but they can't
1974 // contain any codec specific parts and these
1975 // calls are usualy necessary only few times
1976
1977 // set video commands
1978 AVC_SET_WIDTH = 0xACD000,
1979 AVC_SET_HEIGHT,
1980
1981 // set video encoding commands
1982 AVC_SET_FRAME_RATE = 0xACD800,
1983 AVC_SET_QUALITY,
1984 AVC_SET_HURRY_UP,
1985
1986 // set audio commands
1987 AVC_SET_SAMPLE_RATE = 0xACE000,
1988 AVC_SET_CHANNELS,
1989
1990 } avc_cmd_t;
1991
1992 /**
1993 * \param handle allocated private structure by libavcodec
1994 * for initialization pass NULL - will be returned pout
1995 * user is supposed to know nothing about its structure
1996 * \param cmd type of operation to be performed
1997 * \param pint input parameter
1998 * \param pout output parameter
1999 *
2000 * \returns command status - eventually for query command it might return
2001 * integer resulting value
2002 */
2003 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2004
2005 /* frame parsing */
2006 typedef struct AVCodecParserContext {
2007 void *priv_data;
2008 struct AVCodecParser *parser;
2009 int64_t frame_offset; /* offset of the current frame */
2010 int64_t cur_offset; /* current offset
2011 (incremented by each av_parser_parse()) */
2012 int64_t last_frame_offset; /* offset of the last frame */
2013 /* video info */
2014 int pict_type; /* XXX: put it back in AVCodecContext */
2015 int repeat_pict; /* XXX: put it back in AVCodecContext */
2016 int64_t pts; /* pts of the current frame */
2017 int64_t dts; /* dts of the current frame */
2018
2019 /* private data */
2020 int64_t last_pts;
2021 int64_t last_dts;
2022
2023 #define AV_PARSER_PTS_NB 4
2024 int cur_frame_start_index;
2025 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2026 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2027 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2028 } AVCodecParserContext;
2029
2030 typedef struct AVCodecParser {
2031 int codec_ids[3]; /* several codec IDs are permitted */
2032 int priv_data_size;
2033 int (*parser_init)(AVCodecParserContext *s);
2034 int (*parser_parse)(AVCodecParserContext *s,
2035 AVCodecContext *avctx,
2036 uint8_t **poutbuf, int *poutbuf_size,
2037 const uint8_t *buf, int buf_size);
2038 void (*parser_close)(AVCodecParserContext *s);
2039 struct AVCodecParser *next;
2040 } AVCodecParser;
2041
2042 extern AVCodecParser *av_first_parser;
2043
2044 void av_register_codec_parser(AVCodecParser *parser);
2045 AVCodecParserContext *av_parser_init(int codec_id);
2046 int av_parser_parse(AVCodecParserContext *s,
2047 AVCodecContext *avctx,
2048 uint8_t **poutbuf, int *poutbuf_size,
2049 const uint8_t *buf, int buf_size,
2050 int64_t pts, int64_t dts);
2051 void av_parser_close(AVCodecParserContext *s);
2052
2053 extern AVCodecParser mpegvideo_parser;
2054 extern AVCodecParser mpeg4video_parser;
2055 extern AVCodecParser h263_parser;
2056 extern AVCodecParser h264_parser;
2057 extern AVCodecParser mpegaudio_parser;
2058 extern AVCodecParser ac3_parser;
2059
2060 /* memory */
2061 void *av_malloc(unsigned int size);
2062 void *av_mallocz(unsigned int size);
2063 void *av_realloc(void *ptr, unsigned int size);
2064 void av_free(void *ptr);
2065 char *av_strdup(const char *s);
2066 void __av_freep(void **ptr);
2067 #define av_freep(p) __av_freep((void **)(p))
2068 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2069 /* for static data only */
2070 /* call av_free_static to release all staticaly allocated tables */
2071 void av_free_static(void);
2072 void *__av_mallocz_static(void** location, unsigned int size);
2073 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2074
2075 /* add by bero : in adx.c */
2076 int is_adx(const unsigned char *buf,size_t bufsize);
2077
2078 void img_copy(AVPicture *dst, const AVPicture *src,
2079 int pix_fmt, int width, int height);
2080
2081 /* av_log API */
2082
2083 #include <stdarg.h>
2084
2085 #define AV_LOG_ERROR 0
2086 #define AV_LOG_INFO 1
2087 #define AV_LOG_DEBUG 2
2088
2089 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2090 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2091 extern int av_log_get_level(void);
2092 extern void av_log_set_level(int);
2093 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2094
2095 #undef AV_LOG_TRAP_PRINTF
2096 #ifdef AV_LOG_TRAP_PRINTF
2097 #define printf DO NOT USE
2098 #define fprintf DO NOT USE
2099 #undef stderr
2100 #define stderr DO NOT USE
2101 #endif
2102
2103 #ifdef __cplusplus
2104 }
2105 #endif
2106
2107 #endif /* AVCODEC_H */