15 #include <sys/types.h> /* size_t */
17 #define AV_STRINGIFY(s) AV_TOSTRING(s)
18 #define AV_TOSTRING(s) #s
20 #define LIBAVCODEC_VERSION_INT ((51<<16)+(13<<8)+0)
21 #define LIBAVCODEC_VERSION 51.13.0
22 #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
24 #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
26 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
27 #define AV_TIME_BASE 1000000
28 #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
33 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
34 CODEC_ID_MPEG2VIDEO_XVMC,
71 CODEC_ID_INTERPLAY_VIDEO,
111 CODEC_ID_TRUEMOTION2,
125 /* various pcm "codecs" */
126 CODEC_ID_PCM_S16LE= 0x10000,
142 CODEC_ID_PCM_S24DAUD,
144 /* various adpcm codecs */
145 CODEC_ID_ADPCM_IMA_QT= 0x11000,
146 CODEC_ID_ADPCM_IMA_WAV,
147 CODEC_ID_ADPCM_IMA_DK3,
148 CODEC_ID_ADPCM_IMA_DK4,
149 CODEC_ID_ADPCM_IMA_WS,
150 CODEC_ID_ADPCM_IMA_SMJPEG,
159 CODEC_ID_ADPCM_YAMAHA,
160 CODEC_ID_ADPCM_SBPRO_4,
161 CODEC_ID_ADPCM_SBPRO_3,
162 CODEC_ID_ADPCM_SBPRO_2,
165 CODEC_ID_AMR_NB= 0x12000,
168 /* RealAudio codecs*/
169 CODEC_ID_RA_144= 0x13000,
172 /* various DPCM codecs */
173 CODEC_ID_ROQ_DPCM= 0x14000,
174 CODEC_ID_INTERPLAY_DPCM,
178 CODEC_ID_MP2= 0x15000,
179 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
198 CODEC_ID_WESTWOOD_SND1,
207 /* subtitle codecs */
208 CODEC_ID_DVD_SUBTITLE= 0x17000,
209 CODEC_ID_DVB_SUBTITLE,
211 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
212 stream (only used by libavformat) */
215 /* CODEC_ID_MP3LAME is absolete */
216 #define CODEC_ID_MP3LAME CODEC_ID_MP3
219 CODEC_TYPE_UNKNOWN = -1,
226 /* currently unused, may be used if 24/32 bits samples ever supported */
227 /* all in native endian */
229 SAMPLE_FMT_NONE = -1,
230 SAMPLE_FMT_U8, ///< unsigned 8 bits
231 SAMPLE_FMT_S16, ///< signed 16 bits
232 SAMPLE_FMT_S24, ///< signed 24 bits
233 SAMPLE_FMT_S32, ///< signed 32 bits
234 SAMPLE_FMT_FLT, ///< float
238 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
241 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
242 * this is mainly needed because some optimized bitstream readers read
243 * 32 or 64 bit at once and could read over the end<br>
244 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
245 * MPEG bitstreams could cause overread and segfault
247 #define FF_INPUT_BUFFER_PADDING_SIZE 8
250 * minimum encoding buffer size.
251 * used to avoid some checks during header writing
253 #define FF_MIN_BUFFER_SIZE 16384
255 /* motion estimation type, EPZS by default */
269 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
270 AVDISCARD_NONE =-16, ///< discard nothing
271 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
272 AVDISCARD_NONREF = 8, ///< discard all non reference
273 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
274 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
275 AVDISCARD_ALL = 48, ///< discard all
278 typedef struct RcOverride{
281 int qscale; // if this is 0 then quality_factor will be used instead
282 float quality_factor;
285 #define FF_MAX_B_FRAMES 16
288 these flags can be passed in AVCodecContext.flags before initing
289 Note: not everything is supported yet.
292 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
293 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
294 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
295 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
296 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
297 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
298 /* parent program gurantees that the input for b-frame containing streams is not written to
299 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
300 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
301 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
302 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
303 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
304 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
305 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
306 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
307 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
308 of only at frame boundaries */
309 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
310 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
311 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
312 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
313 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
314 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
315 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
316 /* Fx : Flag for h263+ extra options */
317 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
318 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
319 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
320 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
321 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
322 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
323 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
324 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
325 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
326 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
327 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
328 #define CODEC_FLAG_CLOSED_GOP ((int)0x80000000)
329 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
330 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
331 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
332 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
333 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
334 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
335 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
336 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
337 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
338 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
339 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
340 #define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< use MPEG-2 intra VLC table
341 #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
343 /* Unsupported options :
344 * Syntax Arithmetic coding (SAC)
345 * Reference Picture Selection
346 * Independant Segment Decoding */
348 /* codec capabilities */
350 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
352 * Codec uses get_buffer() for allocating buffers.
353 * direct rendering method 1
355 #define CODEC_CAP_DR1 0x0002
356 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
358 #define CODEC_CAP_PARSE_ONLY 0x0004
359 #define CODEC_CAP_TRUNCATED 0x0008
360 /* codec can export data for HW decoding (XvMC) */
361 #define CODEC_CAP_HWACCEL 0x0010
363 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
364 * if this is not set, the codec is guranteed to never be feeded with NULL data
366 #define CODEC_CAP_DELAY 0x0020
368 * Codec can be fed a final frame with a smaller size.
369 * This can be used to prevent truncation of the last audio samples.
371 #define CODEC_CAP_SMALL_LAST_FRAME 0x0040
373 //the following defines may change, don't expect compatibility if you use them
374 #define MB_TYPE_INTRA4x4 0x0001
375 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
376 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
377 #define MB_TYPE_16x16 0x0008
378 #define MB_TYPE_16x8 0x0010
379 #define MB_TYPE_8x16 0x0020
380 #define MB_TYPE_8x8 0x0040
381 #define MB_TYPE_INTERLACED 0x0080
382 #define MB_TYPE_DIRECT2 0x0100 //FIXME
383 #define MB_TYPE_ACPRED 0x0200
384 #define MB_TYPE_GMC 0x0400
385 #define MB_TYPE_SKIP 0x0800
386 #define MB_TYPE_P0L0 0x1000
387 #define MB_TYPE_P1L0 0x2000
388 #define MB_TYPE_P0L1 0x4000
389 #define MB_TYPE_P1L1 0x8000
390 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
391 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
392 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
393 #define MB_TYPE_QUANT 0x00010000
394 #define MB_TYPE_CBP 0x00020000
395 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
399 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
401 typedef struct AVPanScan{
404 * - encoding: set by user.
405 * - decoding: set by lavc
410 * width and height in 1/16 pel
411 * - encoding: set by user.
412 * - decoding: set by lavc
418 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
419 * - encoding: set by user.
420 * - decoding: set by lavc
422 int16_t position[3][2];
425 #define FF_COMMON_FRAME \
427 * pointer to the picture planes.\
428 * this might be different from the first allocated byte\
435 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
436 * this isn't used by lavc unless the default get/release_buffer() is used\
442 * 1 -> keyframe, 0-> not\
443 * - encoding: set by lavc\
444 * - decoding: set by lavc\
449 * picture type of the frame, see ?_TYPE below.\
450 * - encoding: set by lavc for coded_picture (and set by user for input)\
451 * - decoding: set by lavc\
456 * presentation timestamp in time_base units (time when frame should be shown to user)\
457 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
458 * - encoding: MUST be set by user\
459 * - decoding: set by lavc\
464 * picture number in bitstream order.\
465 * - encoding: set by\
466 * - decoding: set by lavc\
468 int coded_picture_number;\
470 * picture number in display order.\
471 * - encoding: set by\
472 * - decoding: set by lavc\
474 int display_picture_number;\
477 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
478 * - encoding: set by lavc for coded_picture (and set by user for input)\
479 * - decoding: set by lavc\
484 * buffer age (1->was last buffer and dint change, 2->..., ...).\
485 * set to INT_MAX if the buffer has not been used yet \
486 * - encoding: unused\
487 * - decoding: MUST be set by get_buffer()\
492 * is this picture used as reference\
493 * - encoding: unused\
494 * - decoding: set by lavc (before get_buffer() call))\
500 * - encoding: unused\
501 * - decoding: set by lavc\
503 int8_t *qscale_table;\
506 * - encoding: unused\
507 * - decoding: set by lavc\
512 * mbskip_table[mb]>=1 if MB didnt change\
513 * stride= mb_width = (width+15)>>4\
514 * - encoding: unused\
515 * - decoding: set by lavc\
517 uint8_t *mbskip_table;\
520 * Motion vector table.\
523 * int mv_sample_log2= 4 - motion_subsample_log2;\
524 * int mb_width= (width+15)>>4;\
525 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
526 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
528 * - encoding: set by user\
529 * - decoding: set by lavc\
531 int16_t (*motion_val[2])[2];\
534 * Macroblock type table\
535 * mb_type_base + mb_width + 2\
536 * - encoding: set by user\
537 * - decoding: set by lavc\
542 * log2 of the size of the block which a single vector in motion_val represents: \
543 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
544 * - encoding: unused\
545 * - decoding: set by lavc\
547 uint8_t motion_subsample_log2;\
550 * for some private data of the user\
551 * - encoding: unused\
552 * - decoding: set by user\
558 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
559 * - decoding: unused\
564 * type of the buffer (to keep track of who has to dealloc data[*])\
565 * - encoding: set by the one who allocs it\
566 * - decoding: set by the one who allocs it\
567 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
572 * when decoding, this signal how much the picture must be delayed.\
573 * extra_delay = repeat_pict / (2*fps)\
574 * - encoding: unused\
575 * - decoding: set by lavc\
585 * The content of the picture is interlaced.\
586 * - encoding: set by user\
587 * - decoding: set by lavc (default 0)\
589 int interlaced_frame;\
592 * if the content is interlaced, is top field displayed first.\
593 * - encoding: set by user\
594 * - decoding: set by lavc\
596 int top_field_first;\
600 * - encoding: set by user\
601 * - decoding: set by lavc\
603 AVPanScan *pan_scan;\
606 * tell user application that palette has changed from previous frame.\
607 * - encoding: ??? (no palette-enabled encoder yet)\
608 * - decoding: set by lavc (default 0)\
610 int palette_has_changed;\
613 * Codec suggestion on buffer type if != 0\
614 * - encoding: unused\
615 * - decoding: set by lavc (before get_buffer() call))\
621 * - encoding: unused\
622 * - decoding: set by lavc\
627 * Motion referece frame index\
628 * - encoding: set by user\
629 * - decoding: set by lavc\
631 int8_t *ref_index[2];
633 #define FF_QSCALE_TYPE_MPEG1 0
634 #define FF_QSCALE_TYPE_MPEG2 1
635 #define FF_QSCALE_TYPE_H264 2
637 #define FF_BUFFER_TYPE_INTERNAL 1
638 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
639 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
640 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
643 #define FF_I_TYPE 1 // Intra
644 #define FF_P_TYPE 2 // Predicted
645 #define FF_B_TYPE 3 // Bi-dir predicted
646 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
650 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
651 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
652 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
653 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
658 typedef struct AVFrame {
662 #define DEFAULT_FRAME_RATE_BASE 1001000
665 * main external api structure.
667 typedef struct AVCodecContext {
669 * Info on struct for av_log
670 * - set by avcodec_alloc_context
674 * the average bitrate.
675 * - encoding: set by user. unused for constant quantizer encoding
676 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
681 * number of bits the bitstream is allowed to diverge from the reference.
682 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
683 * - encoding: set by user. unused for constant quantizer encoding
686 int bit_rate_tolerance;
690 * - encoding: set by user.
691 * - decoding: set by user.
696 * some codecs needs additionnal format info. It is stored here
697 * - encoding: set by user.
698 * - decoding: set by lavc. (FIXME is this ok?)
703 * motion estimation algorithm used for video coding.
704 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
705 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
706 * - encoding: MUST be set by user.
712 * some codecs need / can use extra-data like huffman tables.
713 * mjpeg: huffman tables
714 * rv10: additional flags
715 * mpeg4: global headers (they can be in the bitstream or here)
716 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
717 * then extradata_size to avoid prolems if its read with the bitstream reader
718 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
719 * - encoding: set/allocated/freed by lavc.
720 * - decoding: set/allocated/freed by user.
726 * this is the fundamental unit of time (in seconds) in terms
727 * of which frame timestamps are represented. for fixed-fps content,
728 * timebase should be 1/framerate and timestamp increments should be
730 * - encoding: MUST be set by user
731 * - decoding: set by lavc.
733 AVRational time_base;
737 * picture width / height.
738 * - encoding: MUST be set by user.
739 * - decoding: set by lavc.
740 * Note, for compatibility its possible to set this instead of
741 * coded_width/height before decoding
745 #define FF_ASPECT_EXTENDED 15
748 * the number of pictures in a group of pitures, or 0 for intra_only.
749 * - encoding: set by user.
755 * pixel format, see PIX_FMT_xxx.
756 * - encoding: set by user.
757 * - decoding: set by lavc.
759 enum PixelFormat pix_fmt;
762 * Frame rate emulation. If not zero lower layer (i.e. format handler)
763 * has to read frames at native frame rate.
764 * - encoding: set by user.
765 * - decoding: unused.
770 * if non NULL, 'draw_horiz_band' is called by the libavcodec
771 * decoder to draw an horizontal band. It improve cache usage. Not
772 * all codecs can do that. You must check the codec capabilities
775 * - decoding: set by user.
776 * @param height the height of the slice
777 * @param y the y position of the slice
778 * @param type 1->top field, 2->bottom field, 3->frame
779 * @param offset offset into the AVFrame.data from which the slice should be read
781 void (*draw_horiz_band)(struct AVCodecContext *s,
782 const AVFrame *src, int offset[4],
783 int y, int type, int height);
786 int sample_rate; ///< samples per sec
790 * audio sample format.
791 * - encoding: set by user.
792 * - decoding: set by lavc.
794 enum SampleFormat sample_fmt; ///< sample format, currenly unused
796 /* the following data should not be initialized */
798 * samples per packet. initialized when calling 'init'
801 int frame_number; ///< audio or video frame number
802 int real_pict_num; ///< returns the real picture number of previous encoded frame
805 * number of frames the decoded output will be delayed relative to
807 * - encoding: set by lavc.
812 /* - encoding parameters */
813 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
814 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
818 * - encoding: set by user.
825 * - encoding: set by user.
831 * maximum quantizer difference etween frames.
832 * - encoding: set by user.
838 * maximum number of b frames between non b frames.
839 * note: the output will be delayed by max_b_frames+1 relative to the input
840 * - encoding: set by user.
846 * qscale factor between ip and b frames.
847 * - encoding: set by user.
850 float b_quant_factor;
852 /** obsolete FIXME remove */
854 #define FF_RC_STRATEGY_XVID 1
856 int b_frame_strategy;
860 * deprecated in favor of skip_idct and skip_frame
862 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
866 struct AVCodec *codec;
870 /* unused, FIXME remove*/
873 int rtp_payload_size; /* The size of the RTP payload: the coder will */
874 /* do it's best to deliver a chunk with size */
875 /* below rtp_payload_size, the chunk will start */
876 /* with a start code on some codecs like H.263 */
877 /* This doesn't take account of any particular */
878 /* headers inside the transmited RTP payload */
881 /* The RTP callback: This function is called */
882 /* every time the encoder has a packet to send */
883 /* Depends on the encoder if the data starts */
884 /* with a Start Code (it should) H.263 does. */
885 /* mb_nb contains the number of macroblocks */
886 /* encoded in the RTP payload */
887 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
889 /* statistics, used for 2-pass encoding */
900 * number of bits used for the previously encoded frame.
901 * - encoding: set by lavc
907 * private data of the user, can be used to carry app specific stuff.
908 * - encoding: set by user
909 * - decoding: set by user
914 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
915 enum CodecID codec_id; /* see CODEC_ID_xxx */
918 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
919 * this is used to workaround some encoder bugs
920 * - encoding: set by user, if not then the default based on codec_id will be used
921 * - decoding: set by user, will be converted to upper case by lavc during init
923 unsigned int codec_tag;
926 * workaround bugs in encoders which sometimes cannot be detected automatically.
927 * - encoding: set by user
928 * - decoding: set by user
931 #define FF_BUG_AUTODETECT 1 ///< autodetection
932 #define FF_BUG_OLD_MSMPEG4 2
933 #define FF_BUG_XVID_ILACE 4
934 #define FF_BUG_UMP4 8
935 #define FF_BUG_NO_PADDING 16
936 #define FF_BUG_AMV 32
937 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
938 #define FF_BUG_QPEL_CHROMA 64
939 #define FF_BUG_STD_QPEL 128
940 #define FF_BUG_QPEL_CHROMA2 256
941 #define FF_BUG_DIRECT_BLOCKSIZE 512
942 #define FF_BUG_EDGE 1024
943 #define FF_BUG_HPEL_CHROMA 2048
944 #define FF_BUG_DC_CLIP 4096
945 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
946 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
949 * luma single coeff elimination threshold.
950 * - encoding: set by user
953 int luma_elim_threshold;
956 * chroma single coeff elimination threshold.
957 * - encoding: set by user
960 int chroma_elim_threshold;
963 * strictly follow the std (MPEG4, ...).
964 * - encoding: set by user
967 int strict_std_compliance;
968 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
969 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
970 #define FF_COMPLIANCE_NORMAL 0
971 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
972 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
975 * qscale offset between ip and b frames.
976 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
977 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
978 * - encoding: set by user.
981 float b_quant_offset;
984 * error resilience higher values will detect more errors but may missdetect
985 * some more or less valid parts as errors.
987 * - decoding: set by user
989 int error_resilience;
990 #define FF_ER_CAREFUL 1
991 #define FF_ER_COMPLIANT 2
992 #define FF_ER_AGGRESSIVE 3
993 #define FF_ER_VERY_AGGRESSIVE 4
996 * called at the beginning of each frame to get a buffer for it.
997 * if pic.reference is set then the frame will be read later by lavc
998 * avcodec_align_dimensions() should be used to find the required width and
999 * height, as they normally need to be rounded up to the next multiple of 16
1000 * - encoding: unused
1001 * - decoding: set by lavc, user can override
1003 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1006 * called to release buffers which where allocated with get_buffer.
1007 * a released buffer can be reused in get_buffer()
1008 * pic.data[*] must be set to NULL
1009 * - encoding: unused
1010 * - decoding: set by lavc, user can override
1012 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1015 * if 1 the stream has a 1 frame delay during decoding.
1016 * - encoding: set by lavc
1017 * - decoding: set by lavc
1022 * number of bytes per packet if constant and known or 0
1023 * used by some WAV based audio codecs
1027 int parse_only; /* - decoding only: if true, only parsing is done
1028 (function avcodec_parse_frame()). The frame
1029 data is returned. Only MPEG codecs support this now. */
1032 * 0-> h263 quant 1-> mpeg quant.
1033 * - encoding: set by user.
1034 * - decoding: unused
1039 * pass1 encoding statistics output buffer.
1040 * - encoding: set by lavc
1041 * - decoding: unused
1046 * pass2 encoding statistics input buffer.
1047 * concatenated stuff from stats_out of pass1 should be placed here
1048 * - encoding: allocated/set/freed by user
1049 * - decoding: unused
1054 * ratecontrol qmin qmax limiting method.
1055 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1056 * - encoding: set by user.
1057 * - decoding: unused
1065 * ratecontrol override, see RcOverride.
1066 * - encoding: allocated/set/freed by user.
1067 * - decoding: unused
1069 RcOverride *rc_override;
1070 int rc_override_count;
1073 * rate control equation.
1074 * - encoding: set by user
1075 * - decoding: unused
1081 * - encoding: set by user.
1082 * - decoding: unused
1088 * - encoding: set by user.
1089 * - decoding: unused
1094 * decoder bitstream buffer size.
1095 * - encoding: set by user.
1096 * - decoding: unused
1099 float rc_buffer_aggressivity;
1102 * qscale factor between p and i frames.
1103 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1104 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1105 * - encoding: set by user.
1106 * - decoding: unused
1108 float i_quant_factor;
1111 * qscale offset between p and i frames.
1112 * - encoding: set by user.
1113 * - decoding: unused
1115 float i_quant_offset;
1118 * initial complexity for pass1 ratecontrol.
1119 * - encoding: set by user.
1120 * - decoding: unused
1122 float rc_initial_cplx;
1125 * dct algorithm, see FF_DCT_* below.
1126 * - encoding: set by user
1127 * - decoding: unused
1130 #define FF_DCT_AUTO 0
1131 #define FF_DCT_FASTINT 1
1132 #define FF_DCT_INT 2
1133 #define FF_DCT_MMX 3
1134 #define FF_DCT_MLIB 4
1135 #define FF_DCT_ALTIVEC 5
1136 #define FF_DCT_FAAN 6
1139 * luminance masking (0-> disabled).
1140 * - encoding: set by user
1141 * - decoding: unused
1146 * temporary complexity masking (0-> disabled).
1147 * - encoding: set by user
1148 * - decoding: unused
1150 float temporal_cplx_masking;
1153 * spatial complexity masking (0-> disabled).
1154 * - encoding: set by user
1155 * - decoding: unused
1157 float spatial_cplx_masking;
1160 * p block masking (0-> disabled).
1161 * - encoding: set by user
1162 * - decoding: unused
1167 * darkness masking (0-> disabled).
1168 * - encoding: set by user
1169 * - decoding: unused
1174 /* for binary compatibility */
1178 * idct algorithm, see FF_IDCT_* below.
1179 * - encoding: set by user
1180 * - decoding: set by user
1183 #define FF_IDCT_AUTO 0
1184 #define FF_IDCT_INT 1
1185 #define FF_IDCT_SIMPLE 2
1186 #define FF_IDCT_SIMPLEMMX 3
1187 #define FF_IDCT_LIBMPEG2MMX 4
1188 #define FF_IDCT_PS2 5
1189 #define FF_IDCT_MLIB 6
1190 #define FF_IDCT_ARM 7
1191 #define FF_IDCT_ALTIVEC 8
1192 #define FF_IDCT_SH4 9
1193 #define FF_IDCT_SIMPLEARM 10
1194 #define FF_IDCT_H264 11
1195 #define FF_IDCT_VP3 12
1196 #define FF_IDCT_IPP 13
1197 #define FF_IDCT_XVIDMMX 14
1198 #define FF_IDCT_CAVS 15
1202 * - encoding: set by lavc
1203 * - decoding: set by user (or 0)
1207 * slice offsets in the frame in bytes.
1208 * - encoding: set/allocated by lavc
1209 * - decoding: set/allocated by user (or NULL)
1214 * error concealment flags.
1215 * - encoding: unused
1216 * - decoding: set by user
1218 int error_concealment;
1219 #define FF_EC_GUESS_MVS 1
1220 #define FF_EC_DEBLOCK 2
1223 * dsp_mask could be add used to disable unwanted CPU features
1224 * CPU features (i.e. MMX, SSE. ...)
1226 * with FORCE flag you may instead enable given CPU features
1227 * (Dangerous: usable in case of misdetection, improper usage however will
1228 * result into program crash)
1231 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1232 /* lower 16 bits - CPU features */
1234 #define FF_MM_MMX 0x0001 /* standard MMX */
1235 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1236 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1237 #define FF_MM_SSE 0x0008 /* SSE functions */
1238 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1239 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1240 #endif /* HAVE_MMX */
1242 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1243 #endif /* HAVE_IWMMXT */
1246 * bits per sample/pixel from the demuxer (needed for huffyuv).
1247 * - encoding: set by lavc
1248 * - decoding: set by user
1250 int bits_per_sample;
1253 * prediction method (needed for huffyuv).
1254 * - encoding: set by user
1255 * - decoding: unused
1257 int prediction_method;
1258 #define FF_PRED_LEFT 0
1259 #define FF_PRED_PLANE 1
1260 #define FF_PRED_MEDIAN 2
1263 * sample aspect ratio (0 if unknown).
1264 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1265 * - encoding: set by user.
1266 * - decoding: set by lavc.
1268 AVRational sample_aspect_ratio;
1271 * the picture in the bitstream.
1272 * - encoding: set by lavc
1273 * - decoding: set by lavc
1275 AVFrame *coded_frame;
1279 * - encoding: set by user.
1280 * - decoding: set by user.
1283 #define FF_DEBUG_PICT_INFO 1
1284 #define FF_DEBUG_RC 2
1285 #define FF_DEBUG_BITSTREAM 4
1286 #define FF_DEBUG_MB_TYPE 8
1287 #define FF_DEBUG_QP 16
1288 #define FF_DEBUG_MV 32
1289 #define FF_DEBUG_DCT_COEFF 0x00000040
1290 #define FF_DEBUG_SKIP 0x00000080
1291 #define FF_DEBUG_STARTCODE 0x00000100
1292 #define FF_DEBUG_PTS 0x00000200
1293 #define FF_DEBUG_ER 0x00000400
1294 #define FF_DEBUG_MMCO 0x00000800
1295 #define FF_DEBUG_BUGS 0x00001000
1296 #define FF_DEBUG_VIS_QP 0x00002000
1297 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1301 * - encoding: set by user.
1302 * - decoding: set by user.
1305 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1306 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1307 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1311 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1312 * - decoding: unused
1317 * minimum MB quantizer.
1318 * - encoding: unused
1319 * - decoding: unused
1324 * maximum MB quantizer.
1325 * - encoding: unused
1326 * - decoding: unused
1331 * motion estimation compare function.
1332 * - encoding: set by user.
1333 * - decoding: unused
1337 * subpixel motion estimation compare function.
1338 * - encoding: set by user.
1339 * - decoding: unused
1343 * macroblock compare function (not supported yet).
1344 * - encoding: set by user.
1345 * - decoding: unused
1349 * interlaced dct compare function
1350 * - encoding: set by user.
1351 * - decoding: unused
1354 #define FF_CMP_SAD 0
1355 #define FF_CMP_SSE 1
1356 #define FF_CMP_SATD 2
1357 #define FF_CMP_DCT 3
1358 #define FF_CMP_PSNR 4
1359 #define FF_CMP_BIT 5
1361 #define FF_CMP_ZERO 7
1362 #define FF_CMP_VSAD 8
1363 #define FF_CMP_VSSE 9
1364 #define FF_CMP_NSSE 10
1365 #define FF_CMP_W53 11
1366 #define FF_CMP_W97 12
1367 #define FF_CMP_DCTMAX 13
1368 #define FF_CMP_DCT264 14
1369 #define FF_CMP_CHROMA 256
1372 * ME diamond size & shape.
1373 * - encoding: set by user.
1374 * - decoding: unused
1379 * amount of previous MV predictors (2a+1 x 2a+1 square).
1380 * - encoding: set by user.
1381 * - decoding: unused
1383 int last_predictor_count;
1386 * pre pass for motion estimation.
1387 * - encoding: set by user.
1388 * - decoding: unused
1393 * motion estimation pre pass compare function.
1394 * - encoding: set by user.
1395 * - decoding: unused
1400 * ME pre pass diamond size & shape.
1401 * - encoding: set by user.
1402 * - decoding: unused
1407 * subpel ME quality.
1408 * - encoding: set by user.
1409 * - decoding: unused
1411 int me_subpel_quality;
1414 * callback to negotiate the pixelFormat.
1415 * @param fmt is the list of formats which are supported by the codec,
1416 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1417 * the first is allways the native one
1418 * @return the choosen format
1419 * - encoding: unused
1420 * - decoding: set by user, if not set then the native format will always be choosen
1422 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1425 * DTG active format information (additionnal aspect ratio
1426 * information only used in DVB MPEG2 transport streams). 0 if
1429 * - encoding: unused.
1430 * - decoding: set by decoder
1432 int dtg_active_format;
1433 #define FF_DTG_AFD_SAME 8
1434 #define FF_DTG_AFD_4_3 9
1435 #define FF_DTG_AFD_16_9 10
1436 #define FF_DTG_AFD_14_9 11
1437 #define FF_DTG_AFD_4_3_SP_14_9 13
1438 #define FF_DTG_AFD_16_9_SP_14_9 14
1439 #define FF_DTG_AFD_SP_4_3 15
1442 * Maximum motion estimation search range in subpel units.
1443 * if 0 then no limit
1445 * - encoding: set by user.
1446 * - decoding: unused.
1451 * intra quantizer bias.
1452 * - encoding: set by user.
1453 * - decoding: unused
1455 int intra_quant_bias;
1456 #define FF_DEFAULT_QUANT_BIAS 999999
1459 * inter quantizer bias.
1460 * - encoding: set by user.
1461 * - decoding: unused
1463 int inter_quant_bias;
1467 * - encoding: unused.
1468 * - decoding: which clrtable should be used for 8bit RGB images
1469 * table have to be stored somewhere FIXME
1474 * internal_buffer count.
1475 * Don't touch, used by lavc default_get_buffer()
1477 int internal_buffer_count;
1481 * Don't touch, used by lavc default_get_buffer()
1483 void *internal_buffer;
1485 #define FF_LAMBDA_SHIFT 7
1486 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1487 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1488 #define FF_LAMBDA_MAX (256*128-1)
1490 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1492 * global quality for codecs which cannot change it per frame.
1493 * this should be proportional to MPEG1/2/4 qscale.
1494 * - encoding: set by user.
1495 * - decoding: unused
1499 #define FF_CODER_TYPE_VLC 0
1500 #define FF_CODER_TYPE_AC 1
1503 * - encoding: set by user.
1504 * - decoding: unused
1510 * - encoding: set by user.
1511 * - decoding: unused
1517 * - encoding: unused
1518 * - decoding: set by user.
1520 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1525 * - encoding: unused
1526 * - decoding: set by user.
1529 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1530 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1531 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1534 * XVideo Motion Acceleration
1535 * - encoding: forbidden
1536 * - decoding: set by decoder
1538 int xvmc_acceleration;
1541 * macroblock decision mode
1542 * - encoding: set by user.
1543 * - decoding: unused
1546 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1547 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1548 #define FF_MB_DECISION_RD 2 ///< rate distoration
1551 * custom intra quantization matrix
1552 * - encoding: set by user, can be NULL
1553 * - decoding: set by lavc
1555 uint16_t *intra_matrix;
1558 * custom inter quantization matrix
1559 * - encoding: set by user, can be NULL
1560 * - decoding: set by lavc
1562 uint16_t *inter_matrix;
1565 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1566 * this is used to workaround some encoder bugs
1567 * - encoding: unused
1568 * - decoding: set by user, will be converted to upper case by lavc during init
1570 unsigned int stream_codec_tag;
1573 * scene change detection threshold.
1574 * 0 is default, larger means fewer detected scene changes
1575 * - encoding: set by user.
1576 * - decoding: unused
1578 int scenechange_threshold;
1581 * minimum lagrange multipler
1582 * - encoding: set by user.
1583 * - decoding: unused
1588 * maximum lagrange multipler
1589 * - encoding: set by user.
1590 * - decoding: unused
1595 * Palette control structure
1596 * - encoding: ??? (no palette-enabled encoder yet)
1597 * - decoding: set by user.
1599 struct AVPaletteControl *palctrl;
1602 * noise reduction strength
1603 * - encoding: set by user.
1604 * - decoding: unused
1606 int noise_reduction;
1609 * called at the beginning of a frame to get cr buffer for it.
1610 * buffer type (size, hints) must be the same. lavc won't check it.
1611 * lavc will pass previous buffer in pic, function should return
1612 * same buffer or new buffer with old frame "painted" into it.
1613 * if pic.data[0] == NULL must behave like get_buffer().
1614 * - encoding: unused
1615 * - decoding: set by lavc, user can override
1617 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1620 * number of bits which should be loaded into the rc buffer before decoding starts
1621 * - encoding: set by user.
1622 * - decoding: unused
1624 int rc_initial_buffer_occupancy;
1628 * - encoding: set by user.
1629 * - decoding: unused
1631 int inter_threshold;
1635 * - encoding: set by user.
1636 * - decoding: set by user.
1641 * simulates errors in the bitstream to test error concealment.
1642 * - encoding: set by user.
1643 * - decoding: unused.
1648 * MP3 antialias algorithm, see FF_AA_* below.
1649 * - encoding: unused
1650 * - decoding: set by user
1653 #define FF_AA_AUTO 0
1654 #define FF_AA_FASTINT 1 //not implemented yet
1656 #define FF_AA_FLOAT 3
1658 * Quantizer noise shaping.
1659 * - encoding: set by user
1660 * - decoding: unused
1662 int quantizer_noise_shaping;
1666 * is used to decide how many independant tasks should be passed to execute()
1667 * - encoding: set by user
1668 * - decoding: set by user
1673 * the codec may call this to execute several independant things. it will return only after
1674 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1675 * default implementation will execute the parts serially
1676 * @param count the number of things to execute
1677 * - encoding: set by lavc, user can override
1678 * - decoding: set by lavc, user can override
1680 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1684 * can be used by execute() to store some per AVCodecContext stuff.
1685 * - encoding: set by execute()
1686 * - decoding: set by execute()
1688 void *thread_opaque;
1691 * Motion estimation threshold. under which no motion estimation is
1692 * performed, but instead the user specified motion vectors are used
1694 * - encoding: set by user
1695 * - decoding: unused
1700 * Macroblock threshold. under which the user specified macroblock types will be used
1701 * - encoding: set by user
1702 * - decoding: unused
1707 * precision of the intra dc coefficient - 8.
1708 * - encoding: set by user
1709 * - decoding: unused
1711 int intra_dc_precision;
1714 * noise vs. sse weight for the nsse comparsion function.
1715 * - encoding: set by user
1716 * - decoding: unused
1721 * number of macroblock rows at the top which are skipped.
1722 * - encoding: unused
1723 * - decoding: set by user
1728 * number of macroblock rows at the bottom which are skipped.
1729 * - encoding: unused
1730 * - decoding: set by user
1736 * - encoding: set by user
1737 * - decoding: set by lavc
1740 #define FF_PROFILE_UNKNOWN -99
1744 * - encoding: set by user
1745 * - decoding: set by lavc
1748 #define FF_LEVEL_UNKNOWN -99
1751 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1752 * - encoding: unused
1753 * - decoding: set by user
1758 * bitsream width / height. may be different from width/height if lowres
1759 * or other things are used
1760 * - encoding: unused
1761 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1763 int coded_width, coded_height;
1766 * frame skip threshold
1767 * - encoding: set by user
1768 * - decoding: unused
1770 int frame_skip_threshold;
1774 * - encoding: set by user
1775 * - decoding: unused
1777 int frame_skip_factor;
1780 * frame skip exponent
1781 * - encoding: set by user
1782 * - decoding: unused
1787 * frame skip comparission function
1788 * - encoding: set by user.
1789 * - decoding: unused
1794 * border processing masking. raises the quantizer for mbs on the borders
1796 * - encoding: set by user
1797 * - decoding: unused
1799 float border_masking;
1802 * minimum MB lagrange multipler.
1803 * - encoding: set by user.
1804 * - decoding: unused
1809 * maximum MB lagrange multipler.
1810 * - encoding: set by user.
1811 * - decoding: unused
1817 * - encoding: set by user.
1818 * - decoding: unused
1820 int me_penalty_compensation;
1824 * - encoding: unused
1825 * - decoding: set by user.
1827 enum AVDiscard skip_loop_filter;
1831 * - encoding: unused
1832 * - decoding: set by user.
1834 enum AVDiscard skip_idct;
1838 * - encoding: unused
1839 * - decoding: set by user.
1841 enum AVDiscard skip_frame;
1845 * - encoding: set by user.
1846 * - decoding: unused
1852 * - encoding: set by user.
1853 * - decoding: unused
1858 * constant rate factor - quality-based VBR - values ~correspond to qps
1859 * - encoding: set by user.
1860 * - decoding: unused
1865 * constant quantization parameter rate control method
1866 * - encoding: set by user.
1867 * - decoding: unused
1873 * - encoding: set by user.
1874 * - decoding: unused
1879 * number of reference frames
1880 * - encoding: set by user.
1881 * - decoding: unused
1886 * chroma qp offset from luma
1887 * - encoding: set by user.
1888 * - decoding: unused
1893 * influences how often b-frames are used
1894 * - encoding: set by user.
1895 * - decoding: unused
1900 * trellis RD quantization
1901 * - encoding: set by user.
1902 * - decoding: unused
1907 * reduce fluctuations in qp (before curve compression)
1908 * - encoding: set by user.
1909 * - decoding: unused
1911 float complexityblur;
1914 * in-loop deblocking filter alphac0 parameter
1915 * alpha is in the range -6...6
1916 * - encoding: set by user.
1917 * - decoding: unused
1922 * in-loop deblocking filter beta parameter
1923 * beta is in the range -6...6
1924 * - encoding: set by user.
1925 * - decoding: unused
1930 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1931 * - encoding: set by user.
1932 * - decoding: unused
1935 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1936 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1937 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1938 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1939 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1942 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1943 * - encoding: set by user.
1944 * - decoding: unused
1949 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1950 * - encoding: set by user.
1951 * - decoding: unused
1956 * multiplied by qscale for each frame and added to scene_change_score
1957 * - encoding: set by user.
1958 * - decoding: unused
1960 int scenechange_factor;
1964 * note: value depends upon the compare functin used for fullpel ME
1965 * - encoding: set by user.
1966 * - decoding: unused
1971 * adjusts sensitivity of b_frame_strategy 1
1972 * - encoding: set by user.
1973 * - decoding: unused
1978 * - encoding: set by user.
1979 * - decoding: unused
1981 int compression_level;
1982 #define FF_COMPRESSION_DEFAULT -1
1985 * sets whether to use LPC mode - used by FLAC encoder
1986 * - encoding: set by user.
1987 * - decoding: unused.
1992 * LPC coefficient precision - used by FLAC encoder
1993 * - encoding: set by user.
1994 * - decoding: unused.
1996 int lpc_coeff_precision;
1999 * - encoding: set by user.
2000 * - decoding: unused.
2002 int min_prediction_order;
2005 * - encoding: set by user.
2006 * - decoding: unused.
2008 int max_prediction_order;
2011 * search method for selecting prediction order
2012 * - encoding: set by user.
2013 * - decoding: unused.
2015 int prediction_order_method;
2018 * - encoding: set by user.
2019 * - decoding: unused.
2021 int min_partition_order;
2024 * - encoding: set by user.
2025 * - decoding: unused.
2027 int max_partition_order;
2033 typedef struct AVCodec {
2035 enum CodecType type;
2038 int (*init)(AVCodecContext *);
2039 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2040 int (*close)(AVCodecContext *);
2041 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2042 uint8_t *buf, int buf_size);
2044 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2045 void *dummy; // FIXME remove next time we break binary compatibility
2047 struct AVCodec *next;
2048 void (*flush)(AVCodecContext *);
2049 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2050 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2054 * four components are given, that's all.
2055 * the last component is alpha
2057 typedef struct AVPicture {
2059 int linesize[4]; ///< number of bytes per line
2064 * This structure defines a method for communicating palette changes
2065 * between and demuxer and a decoder.
2067 #define AVPALETTE_SIZE 1024
2068 #define AVPALETTE_COUNT 256
2069 typedef struct AVPaletteControl {
2071 /* demuxer sets this to 1 to indicate the palette has changed;
2072 * decoder resets to 0 */
2073 int palette_changed;
2075 /* 4-byte ARGB palette entries, stored in native byte order; note that
2076 * the individual palette components should be on a 8-bit scale; if
2077 * the palette data comes from a IBM VGA native format, the component
2078 * data is probably 6 bits in size and needs to be scaled */
2079 unsigned int palette[AVPALETTE_COUNT];
2083 typedef struct AVSubtitleRect {
2090 uint32_t *rgba_palette;
2094 typedef struct AVSubtitle {
2095 uint16_t format; /* 0 = graphics */
2096 uint32_t start_display_time; /* relative to packet pts, in ms */
2097 uint32_t end_display_time; /* relative to packet pts, in ms */
2099 AVSubtitleRect *rects;
2102 extern AVCodec ac3_encoder;
2103 extern AVCodec mp2_encoder;
2104 extern AVCodec mp3lame_encoder;
2105 extern AVCodec oggvorbis_encoder;
2106 extern AVCodec faac_encoder;
2107 extern AVCodec flac_encoder;
2108 extern AVCodec xvid_encoder;
2109 extern AVCodec mpeg1video_encoder;
2110 extern AVCodec mpeg2video_encoder;
2111 extern AVCodec h261_encoder;
2112 extern AVCodec h263_encoder;
2113 extern AVCodec h263p_encoder;
2114 extern AVCodec flv_encoder;
2115 extern AVCodec rv10_encoder;
2116 extern AVCodec rv20_encoder;
2117 extern AVCodec dvvideo_encoder;
2118 extern AVCodec mjpeg_encoder;
2119 extern AVCodec ljpeg_encoder;
2120 extern AVCodec jpegls_encoder;
2121 extern AVCodec png_encoder;
2122 extern AVCodec ppm_encoder;
2123 extern AVCodec pgm_encoder;
2124 extern AVCodec pgmyuv_encoder;
2125 extern AVCodec pbm_encoder;
2126 extern AVCodec pam_encoder;
2127 extern AVCodec mpeg4_encoder;
2128 extern AVCodec msmpeg4v1_encoder;
2129 extern AVCodec msmpeg4v2_encoder;
2130 extern AVCodec msmpeg4v3_encoder;
2131 extern AVCodec wmv1_encoder;
2132 extern AVCodec wmv2_encoder;
2133 extern AVCodec huffyuv_encoder;
2134 extern AVCodec ffvhuff_encoder;
2135 extern AVCodec h264_encoder;
2136 extern AVCodec asv1_encoder;
2137 extern AVCodec asv2_encoder;
2138 extern AVCodec vcr1_encoder;
2139 extern AVCodec ffv1_encoder;
2140 extern AVCodec snow_encoder;
2141 extern AVCodec mdec_encoder;
2142 extern AVCodec zlib_encoder;
2143 extern AVCodec sonic_encoder;
2144 extern AVCodec sonic_ls_encoder;
2145 extern AVCodec svq1_encoder;
2146 extern AVCodec x264_encoder;
2148 extern AVCodec h263_decoder;
2149 extern AVCodec h261_decoder;
2150 extern AVCodec mpeg4_decoder;
2151 extern AVCodec msmpeg4v1_decoder;
2152 extern AVCodec msmpeg4v2_decoder;
2153 extern AVCodec msmpeg4v3_decoder;
2154 extern AVCodec wmv1_decoder;
2155 extern AVCodec wmv2_decoder;
2156 extern AVCodec vc1_decoder;
2157 extern AVCodec wmv3_decoder;
2158 extern AVCodec mpeg1video_decoder;
2159 extern AVCodec mpeg2video_decoder;
2160 extern AVCodec mpegvideo_decoder;
2161 extern AVCodec mpeg_xvmc_decoder;
2162 extern AVCodec h263i_decoder;
2163 extern AVCodec flv_decoder;
2164 extern AVCodec rv10_decoder;
2165 extern AVCodec rv20_decoder;
2166 extern AVCodec rv30_decoder;
2167 extern AVCodec rv40_decoder;
2168 extern AVCodec svq1_decoder;
2169 extern AVCodec svq3_decoder;
2170 extern AVCodec dvvideo_decoder;
2171 extern AVCodec wmav1_decoder;
2172 extern AVCodec wmav2_decoder;
2173 extern AVCodec mjpeg_decoder;
2174 extern AVCodec mjpegb_decoder;
2175 extern AVCodec sp5x_decoder;
2176 extern AVCodec png_decoder;
2177 extern AVCodec mp2_decoder;
2178 extern AVCodec mp3_decoder;
2179 extern AVCodec mp3adu_decoder;
2180 extern AVCodec mp3on4_decoder;
2181 extern AVCodec qdm2_decoder;
2182 extern AVCodec cook_decoder;
2183 extern AVCodec truespeech_decoder;
2184 extern AVCodec tta_decoder;
2185 extern AVCodec mace3_decoder;
2186 extern AVCodec mace6_decoder;
2187 extern AVCodec huffyuv_decoder;
2188 extern AVCodec ffvhuff_decoder;
2189 extern AVCodec oggvorbis_decoder;
2190 extern AVCodec cyuv_decoder;
2191 extern AVCodec h264_decoder;
2192 extern AVCodec indeo3_decoder;
2193 extern AVCodec vp3_decoder;
2194 extern AVCodec theora_decoder;
2195 extern AVCodec amr_nb_decoder;
2196 extern AVCodec amr_nb_encoder;
2197 extern AVCodec amr_wb_encoder;
2198 extern AVCodec amr_wb_decoder;
2199 extern AVCodec aac_decoder;
2200 extern AVCodec mpeg4aac_decoder;
2201 extern AVCodec asv1_decoder;
2202 extern AVCodec asv2_decoder;
2203 extern AVCodec vcr1_decoder;
2204 extern AVCodec cljr_decoder;
2205 extern AVCodec ffv1_decoder;
2206 extern AVCodec snow_decoder;
2207 extern AVCodec fourxm_decoder;
2208 extern AVCodec mdec_decoder;
2209 extern AVCodec roq_decoder;
2210 extern AVCodec interplay_video_decoder;
2211 extern AVCodec xan_wc3_decoder;
2212 extern AVCodec rpza_decoder;
2213 extern AVCodec cinepak_decoder;
2214 extern AVCodec msrle_decoder;
2215 extern AVCodec msvideo1_decoder;
2216 extern AVCodec vqa_decoder;
2217 extern AVCodec idcin_decoder;
2218 extern AVCodec eightbps_decoder;
2219 extern AVCodec smc_decoder;
2220 extern AVCodec flic_decoder;
2221 extern AVCodec vmdvideo_decoder;
2222 extern AVCodec vmdaudio_decoder;
2223 extern AVCodec truemotion1_decoder;
2224 extern AVCodec truemotion2_decoder;
2225 extern AVCodec mszh_decoder;
2226 extern AVCodec zlib_decoder;
2227 extern AVCodec ra_144_decoder;
2228 extern AVCodec ra_288_decoder;
2229 extern AVCodec roq_dpcm_decoder;
2230 extern AVCodec interplay_dpcm_decoder;
2231 extern AVCodec xan_dpcm_decoder;
2232 extern AVCodec sol_dpcm_decoder;
2233 extern AVCodec sonic_decoder;
2234 extern AVCodec qtrle_decoder;
2235 extern AVCodec flac_decoder;
2236 extern AVCodec tscc_decoder;
2237 extern AVCodec cscd_decoder;
2238 extern AVCodec nuv_decoder;
2239 extern AVCodec ulti_decoder;
2240 extern AVCodec qdraw_decoder;
2241 extern AVCodec xl_decoder;
2242 extern AVCodec qpeg_decoder;
2243 extern AVCodec shorten_decoder;
2244 extern AVCodec loco_decoder;
2245 extern AVCodec wnv1_decoder;
2246 extern AVCodec aasc_decoder;
2247 extern AVCodec alac_decoder;
2248 extern AVCodec ws_snd1_decoder;
2249 extern AVCodec indeo2_decoder;
2250 extern AVCodec vorbis_decoder;
2251 extern AVCodec fraps_decoder;
2252 extern AVCodec libgsm_encoder;
2253 extern AVCodec libgsm_decoder;
2254 extern AVCodec bmp_decoder;
2255 extern AVCodec mmvideo_decoder;
2256 extern AVCodec zmbv_decoder;
2257 extern AVCodec avs_decoder;
2258 extern AVCodec smacker_decoder;
2259 extern AVCodec smackaud_decoder;
2260 extern AVCodec kmvc_decoder;
2261 extern AVCodec flashsv_decoder;
2262 extern AVCodec cavs_decoder;
2263 extern AVCodec vmnc_decoder;
2266 #define PCM_CODEC(id, name) \
2267 extern AVCodec name ## _decoder; \
2268 extern AVCodec name ## _encoder
2270 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2271 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2272 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2273 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2274 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2275 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2276 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2277 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2278 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2279 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2280 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2281 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2282 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2283 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2284 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2285 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2286 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2290 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2291 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2292 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2293 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2294 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2295 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2296 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2297 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2298 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2299 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2300 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2301 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2302 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2303 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2304 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2305 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
2306 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
2307 PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
2311 /* dummy raw video codec */
2312 extern AVCodec rawvideo_encoder;
2313 extern AVCodec rawvideo_decoder;
2315 /* the following codecs use external GPL libs */
2316 extern AVCodec ac3_decoder;
2317 extern AVCodec dts_decoder;
2320 extern AVCodec dvdsub_encoder;
2321 extern AVCodec dvdsub_decoder;
2322 extern AVCodec dvbsub_encoder;
2323 extern AVCodec dvbsub_decoder;
2327 struct ReSampleContext;
2328 struct AVResampleContext;
2330 typedef struct ReSampleContext ReSampleContext;
2332 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2333 int output_rate, int input_rate);
2334 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2335 void audio_resample_close(ReSampleContext *s);
2337 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2338 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2339 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2340 void av_resample_close(struct AVResampleContext *c);
2342 /* YUV420 format is assumed ! */
2344 struct ImgReSampleContext;
2346 typedef struct ImgReSampleContext ImgReSampleContext;
2348 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2349 int input_width, int input_height);
2351 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2352 int iwidth, int iheight,
2353 int topBand, int bottomBand,
2354 int leftBand, int rightBand,
2355 int padtop, int padbottom,
2356 int padleft, int padright);
2359 void img_resample(ImgReSampleContext *s,
2360 AVPicture *output, const AVPicture *input);
2362 void img_resample_close(ImgReSampleContext *s);
2365 * Allocate memory for a picture. Call avpicture_free to free it.
2367 * @param picture the picture to be filled in.
2368 * @param pix_fmt the format of the picture.
2369 * @param width the width of the picture.
2370 * @param height the height of the picture.
2371 * @return 0 if successful, -1 if not.
2373 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2375 /* Free a picture previously allocated by avpicture_alloc. */
2376 void avpicture_free(AVPicture *picture);
2378 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2379 int pix_fmt, int width, int height);
2380 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2381 unsigned char *dest, int dest_size);
2382 int avpicture_get_size(int pix_fmt, int width, int height);
2383 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2384 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2385 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2386 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2387 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2389 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2390 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2391 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2392 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2393 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2394 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2396 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2398 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2399 int has_alpha, int *loss_ptr);
2401 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2402 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2403 int img_get_alpha_info(const AVPicture *src,
2404 int pix_fmt, int width, int height);
2406 /* convert among pixel formats */
2407 int img_convert(AVPicture *dst, int dst_pix_fmt,
2408 const AVPicture *src, int pix_fmt,
2409 int width, int height);
2411 /* deinterlace a picture */
2412 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2413 int pix_fmt, int width, int height);
2415 /* external high level API */
2417 extern AVCodec *first_avcodec;
2419 /* returns LIBAVCODEC_VERSION_INT constant */
2420 unsigned avcodec_version(void);
2421 /* returns LIBAVCODEC_BUILD constant */
2422 unsigned avcodec_build(void);
2423 void avcodec_init(void);
2425 void register_avcodec(AVCodec *format);
2426 AVCodec *avcodec_find_encoder(enum CodecID id);
2427 AVCodec *avcodec_find_encoder_by_name(const char *name);
2428 AVCodec *avcodec_find_decoder(enum CodecID id);
2429 AVCodec *avcodec_find_decoder_by_name(const char *name);
2430 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2432 void avcodec_get_context_defaults(AVCodecContext *s);
2433 AVCodecContext *avcodec_alloc_context(void);
2434 void avcodec_get_frame_defaults(AVFrame *pic);
2435 AVFrame *avcodec_alloc_frame(void);
2437 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2438 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2439 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2440 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2441 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2442 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2444 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2445 void avcodec_thread_free(AVCodecContext *s);
2446 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2447 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2448 //FIXME func typedef
2451 * opens / inits the AVCodecContext.
2454 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2457 * Decode an audio frame.
2459 * @param avctx the codec context.
2460 * @param samples output buffer, 16 byte aligned
2461 * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed
2462 * @param buf input buffer, 16 byte aligned
2463 * @param buf_size the input buffer size
2464 * @return 0 if successful, -1 if not.
2467 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2468 int *frame_size_ptr,
2469 uint8_t *buf, int buf_size);
2470 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2471 int *got_picture_ptr,
2472 uint8_t *buf, int buf_size);
2473 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2475 const uint8_t *buf, int buf_size);
2476 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2478 uint8_t *buf, int buf_size);
2479 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2480 const short *samples);
2481 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2482 const AVFrame *pict);
2483 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2484 const AVSubtitle *sub);
2486 int avcodec_close(AVCodecContext *avctx);
2488 void avcodec_register_all(void);
2490 void avcodec_flush_buffers(AVCodecContext *avctx);
2492 void avcodec_default_free_buffers(AVCodecContext *s);
2494 /* misc usefull functions */
2497 * returns a single letter to describe the picture type
2499 char av_get_pict_type_char(int pict_type);
2502 * returns codec bits per sample
2504 int av_get_bits_per_sample(enum CodecID codec_id);
2507 typedef struct AVCodecParserContext {
2509 struct AVCodecParser *parser;
2510 int64_t frame_offset; /* offset of the current frame */
2511 int64_t cur_offset; /* current offset
2512 (incremented by each av_parser_parse()) */
2513 int64_t last_frame_offset; /* offset of the last frame */
2515 int pict_type; /* XXX: put it back in AVCodecContext */
2516 int repeat_pict; /* XXX: put it back in AVCodecContext */
2517 int64_t pts; /* pts of the current frame */
2518 int64_t dts; /* dts of the current frame */
2523 int fetch_timestamp;
2525 #define AV_PARSER_PTS_NB 4
2526 int cur_frame_start_index;
2527 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2528 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2529 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2532 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2533 } AVCodecParserContext;
2535 typedef struct AVCodecParser {
2536 int codec_ids[5]; /* several codec IDs are permitted */
2538 int (*parser_init)(AVCodecParserContext *s);
2539 int (*parser_parse)(AVCodecParserContext *s,
2540 AVCodecContext *avctx,
2541 uint8_t **poutbuf, int *poutbuf_size,
2542 const uint8_t *buf, int buf_size);
2543 void (*parser_close)(AVCodecParserContext *s);
2544 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2545 struct AVCodecParser *next;
2548 extern AVCodecParser *av_first_parser;
2550 void av_register_codec_parser(AVCodecParser *parser);
2551 AVCodecParserContext *av_parser_init(int codec_id);
2552 int av_parser_parse(AVCodecParserContext *s,
2553 AVCodecContext *avctx,
2554 uint8_t **poutbuf, int *poutbuf_size,
2555 const uint8_t *buf, int buf_size,
2556 int64_t pts, int64_t dts);
2557 int av_parser_change(AVCodecParserContext *s,
2558 AVCodecContext *avctx,
2559 uint8_t **poutbuf, int *poutbuf_size,
2560 const uint8_t *buf, int buf_size, int keyframe);
2561 void av_parser_close(AVCodecParserContext *s);
2563 extern AVCodecParser mpegvideo_parser;
2564 extern AVCodecParser mpeg4video_parser;
2565 extern AVCodecParser cavsvideo_parser;
2566 extern AVCodecParser h261_parser;
2567 extern AVCodecParser h263_parser;
2568 extern AVCodecParser h264_parser;
2569 extern AVCodecParser mjpeg_parser;
2570 extern AVCodecParser pnm_parser;
2571 extern AVCodecParser mpegaudio_parser;
2572 extern AVCodecParser ac3_parser;
2573 extern AVCodecParser dvdsub_parser;
2574 extern AVCodecParser dvbsub_parser;
2575 extern AVCodecParser aac_parser;
2578 typedef struct AVBitStreamFilterContext {
2580 struct AVBitStreamFilter *filter;
2581 AVCodecParserContext *parser;
2582 struct AVBitStreamFilterContext *next;
2583 } AVBitStreamFilterContext;
2586 typedef struct AVBitStreamFilter {
2589 int (*filter)(AVBitStreamFilterContext *bsfc,
2590 AVCodecContext *avctx, const char *args,
2591 uint8_t **poutbuf, int *poutbuf_size,
2592 const uint8_t *buf, int buf_size, int keyframe);
2593 struct AVBitStreamFilter *next;
2594 } AVBitStreamFilter;
2596 extern AVBitStreamFilter *av_first_bitstream_filter;
2598 void av_register_bitstream_filter(AVBitStreamFilter *bsf);
2599 AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
2600 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
2601 AVCodecContext *avctx, const char *args,
2602 uint8_t **poutbuf, int *poutbuf_size,
2603 const uint8_t *buf, int buf_size, int keyframe);
2604 void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
2606 extern AVBitStreamFilter dump_extradata_bsf;
2607 extern AVBitStreamFilter remove_extradata_bsf;
2608 extern AVBitStreamFilter noise_bsf;
2612 void *av_mallocz(unsigned int size);
2613 char *av_strdup(const char *s);
2614 void av_freep(void *ptr);
2615 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2616 /* for static data only */
2617 /* call av_free_static to release all staticaly allocated tables */
2618 void av_free_static(void);
2619 void *av_mallocz_static(unsigned int size);
2620 void *av_realloc_static(void *ptr, unsigned int size);
2622 void img_copy(AVPicture *dst, const AVPicture *src,
2623 int pix_fmt, int width, int height);
2625 int img_crop(AVPicture *dst, const AVPicture *src,
2626 int pix_fmt, int top_band, int left_band);
2628 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
2629 int padtop, int padbottom, int padleft, int padright, int *color);
2632 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2633 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2634 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2635 (((uint8_t*)(x))[1] << 16) | \
2636 (((uint8_t*)(x))[2] << 8) | \
2638 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2639 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2640 (((uint8_t*)(x))[2] << 16) | \
2641 (((uint8_t*)(x))[1] << 8) | \
2645 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2651 #endif /* AVCODEC_H */