15 #include <sys/types.h> /* size_t */
17 //FIXME the following 2 really dont belong in here
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "CVS"
21 #define AV_STRINGIFY(s) AV_TOSTRING(s)
22 #define AV_TOSTRING(s) #s
24 #define LIBAVCODEC_VERSION_INT ((51<<16)+(1<<8)+0)
25 #define LIBAVCODEC_VERSION 51.1.0
26 #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
28 #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
30 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
31 #define AV_TIME_BASE 1000000
32 #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
37 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
38 CODEC_ID_MPEG2VIDEO_XVMC,
75 CODEC_ID_INTERPLAY_VIDEO,
115 CODEC_ID_TRUEMOTION2,
119 /* various pcm "codecs" */
120 CODEC_ID_PCM_S16LE= 0x10000,
136 CODEC_ID_PCM_S24DAUD,
138 /* various adpcm codecs */
139 CODEC_ID_ADPCM_IMA_QT= 0x11000,
140 CODEC_ID_ADPCM_IMA_WAV,
141 CODEC_ID_ADPCM_IMA_DK3,
142 CODEC_ID_ADPCM_IMA_DK4,
143 CODEC_ID_ADPCM_IMA_WS,
144 CODEC_ID_ADPCM_IMA_SMJPEG,
153 CODEC_ID_ADPCM_YAMAHA,
156 CODEC_ID_AMR_NB= 0x12000,
159 /* RealAudio codecs*/
160 CODEC_ID_RA_144= 0x13000,
163 /* various DPCM codecs */
164 CODEC_ID_ROQ_DPCM= 0x14000,
165 CODEC_ID_INTERPLAY_DPCM,
169 CODEC_ID_MP2= 0x15000,
170 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
189 CODEC_ID_WESTWOOD_SND1,
195 CODEC_ID_OGGTHEORA= 0x16000,
197 /* subtitle codecs */
198 CODEC_ID_DVD_SUBTITLE= 0x17000,
199 CODEC_ID_DVB_SUBTITLE,
201 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
202 stream (only used by libavformat) */
205 /* CODEC_ID_MP3LAME is absolete */
206 #define CODEC_ID_MP3LAME CODEC_ID_MP3
209 CODEC_TYPE_UNKNOWN = -1,
217 * Pixel format. Notes:
219 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
220 * color is put together as:
221 * (A << 24) | (R << 16) | (G << 8) | B
222 * This is stored as BGRA on little endian CPU architectures and ARGB on
225 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
226 * image data is stored in AVFrame.data[0]. The palette is transported in
227 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
228 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
229 * also endian-specific). Note also that the individual RGB palette
230 * components stored in AVFrame.data[1] should be in the range 0..255.
231 * This is important as many custom PAL8 video codecs that were designed
232 * to run on the IBM VGA graphics adapter use 6-bit palette components.
236 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
237 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
238 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
239 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
240 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
241 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
242 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
243 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
244 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
245 PIX_FMT_RGB565, ///< always stored in cpu endianness
246 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
248 PIX_FMT_MONOWHITE, ///< 0 is white
249 PIX_FMT_MONOBLACK, ///< 0 is black
250 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
251 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
252 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
253 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
254 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
255 PIX_FMT_XVMC_MPEG2_IDCT,
256 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
257 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
261 /* currently unused, may be used if 24/32 bits samples ever supported */
263 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
264 SAMPLE_FMT_S32, ///< signed 32 bits
265 SAMPLE_FMT_FLT, ///< float
266 SAMPLE_FMT_DBL, ///< double
270 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
273 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
274 * this is mainly needed because some optimized bitstream readers read
275 * 32 or 64 bit at once and could read over the end<br>
276 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
277 * MPEG bitstreams could cause overread and segfault
279 #define FF_INPUT_BUFFER_PADDING_SIZE 8
282 * minimum encoding buffer size.
283 * used to avoid some checks during header writing
285 #define FF_MIN_BUFFER_SIZE 16384
287 /* motion estimation type, EPZS by default */
301 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
302 AVDISCARD_NONE =-16, ///< discard nothing
303 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
304 AVDISCARD_NONREF = 8, ///< discard all non reference
305 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
306 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
307 AVDISCARD_ALL = 48, ///< discard all
310 typedef struct RcOverride{
313 int qscale; // if this is 0 then quality_factor will be used instead
314 float quality_factor;
317 /* only for ME compatiblity with old apps */
318 extern int motion_estimation_method;
320 #define FF_MAX_B_FRAMES 8
323 these flags can be passed in AVCodecContext.flags before initing
324 Note: not everything is supported yet.
327 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
328 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
329 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
330 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
331 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
332 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
333 /* parent program gurantees that the input for b-frame containing streams is not written to
334 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
335 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
336 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
337 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
338 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
339 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
340 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
341 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
342 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
343 of only at frame boundaries */
344 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
345 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
346 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
347 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
348 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
349 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
350 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
351 /* Fx : Flag for h263+ extra options */
352 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
353 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
354 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
355 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
356 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
357 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
358 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
359 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
360 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
361 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
362 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
363 #define CODEC_FLAG_CLOSED_GOP 0x80000000
364 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
365 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
366 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
367 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
368 #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
369 #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
370 #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
371 #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
372 #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
373 #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
374 #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
376 /* Unsupported options :
377 * Syntax Arithmetic coding (SAC)
378 * Reference Picture Selection
379 * Independant Segment Decoding */
381 /* codec capabilities */
383 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
385 * Codec uses get_buffer() for allocating buffers.
386 * direct rendering method 1
388 #define CODEC_CAP_DR1 0x0002
389 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
391 #define CODEC_CAP_PARSE_ONLY 0x0004
392 #define CODEC_CAP_TRUNCATED 0x0008
393 /* codec can export data for HW decoding (XvMC) */
394 #define CODEC_CAP_HWACCEL 0x0010
396 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
397 * if this is not set, the codec is guranteed to never be feeded with NULL data
399 #define CODEC_CAP_DELAY 0x0020
401 //the following defines may change, don't expect compatibility if you use them
402 #define MB_TYPE_INTRA4x4 0x0001
403 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
404 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
405 #define MB_TYPE_16x16 0x0008
406 #define MB_TYPE_16x8 0x0010
407 #define MB_TYPE_8x16 0x0020
408 #define MB_TYPE_8x8 0x0040
409 #define MB_TYPE_INTERLACED 0x0080
410 #define MB_TYPE_DIRECT2 0x0100 //FIXME
411 #define MB_TYPE_ACPRED 0x0200
412 #define MB_TYPE_GMC 0x0400
413 #define MB_TYPE_SKIP 0x0800
414 #define MB_TYPE_P0L0 0x1000
415 #define MB_TYPE_P1L0 0x2000
416 #define MB_TYPE_P0L1 0x4000
417 #define MB_TYPE_P1L1 0x8000
418 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
419 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
420 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
421 #define MB_TYPE_QUANT 0x00010000
422 #define MB_TYPE_CBP 0x00020000
423 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
427 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
429 typedef struct AVPanScan{
432 * - encoding: set by user.
433 * - decoding: set by lavc
438 * width and height in 1/16 pel
439 * - encoding: set by user.
440 * - decoding: set by lavc
446 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
447 * - encoding: set by user.
448 * - decoding: set by lavc
450 int16_t position[3][2];
453 #define FF_COMMON_FRAME \
455 * pointer to the picture planes.\
456 * this might be different from the first allocated byte\
463 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
464 * this isn't used by lavc unless the default get/release_buffer() is used\
470 * 1 -> keyframe, 0-> not\
471 * - encoding: set by lavc\
472 * - decoding: set by lavc\
477 * picture type of the frame, see ?_TYPE below.\
478 * - encoding: set by lavc for coded_picture (and set by user for input)\
479 * - decoding: set by lavc\
484 * presentation timestamp in time_base units (time when frame should be shown to user)\
485 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
486 * - encoding: MUST be set by user\
487 * - decoding: set by lavc\
492 * picture number in bitstream order.\
493 * - encoding: set by\
494 * - decoding: set by lavc\
496 int coded_picture_number;\
498 * picture number in display order.\
499 * - encoding: set by\
500 * - decoding: set by lavc\
502 int display_picture_number;\
505 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
506 * - encoding: set by lavc for coded_picture (and set by user for input)\
507 * - decoding: set by lavc\
512 * buffer age (1->was last buffer and dint change, 2->..., ...).\
513 * set to INT_MAX if the buffer has not been used yet \
514 * - encoding: unused\
515 * - decoding: MUST be set by get_buffer()\
520 * is this picture used as reference\
521 * - encoding: unused\
522 * - decoding: set by lavc (before get_buffer() call))\
528 * - encoding: unused\
529 * - decoding: set by lavc\
531 int8_t *qscale_table;\
534 * - encoding: unused\
535 * - decoding: set by lavc\
540 * mbskip_table[mb]>=1 if MB didnt change\
541 * stride= mb_width = (width+15)>>4\
542 * - encoding: unused\
543 * - decoding: set by lavc\
545 uint8_t *mbskip_table;\
548 * Motion vector table.\
551 * int mv_sample_log2= 4 - motion_subsample_log2;\
552 * int mb_width= (width+15)>>4;\
553 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
554 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
556 * - encoding: set by user\
557 * - decoding: set by lavc\
559 int16_t (*motion_val[2])[2];\
562 * Macroblock type table\
563 * mb_type_base + mb_width + 2\
564 * - encoding: set by user\
565 * - decoding: set by lavc\
570 * log2 of the size of the block which a single vector in motion_val represents: \
571 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
572 * - encoding: unused\
573 * - decoding: set by lavc\
575 uint8_t motion_subsample_log2;\
578 * for some private data of the user\
579 * - encoding: unused\
580 * - decoding: set by user\
586 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
587 * - decoding: unused\
592 * type of the buffer (to keep track of who has to dealloc data[*])\
593 * - encoding: set by the one who allocs it\
594 * - decoding: set by the one who allocs it\
595 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
600 * when decoding, this signal how much the picture must be delayed.\
601 * extra_delay = repeat_pict / (2*fps)\
602 * - encoding: unused\
603 * - decoding: set by lavc\
613 * The content of the picture is interlaced.\
614 * - encoding: set by user\
615 * - decoding: set by lavc (default 0)\
617 int interlaced_frame;\
620 * if the content is interlaced, is top field displayed first.\
621 * - encoding: set by user\
622 * - decoding: set by lavc\
624 int top_field_first;\
628 * - encoding: set by user\
629 * - decoding: set by lavc\
631 AVPanScan *pan_scan;\
634 * tell user application that palette has changed from previous frame.\
635 * - encoding: ??? (no palette-enabled encoder yet)\
636 * - decoding: set by lavc (default 0)\
638 int palette_has_changed;\
641 * Codec suggestion on buffer type if != 0\
642 * - encoding: unused\
643 * - decoding: set by lavc (before get_buffer() call))\
649 * - encoding: unused\
650 * - decoding: set by lavc\
655 * Motion referece frame index\
656 * - encoding: set by user\
657 * - decoding: set by lavc\
659 int8_t *ref_index[2];
661 #define FF_QSCALE_TYPE_MPEG1 0
662 #define FF_QSCALE_TYPE_MPEG2 1
663 #define FF_QSCALE_TYPE_H264 2
665 #define FF_BUFFER_TYPE_INTERNAL 1
666 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
667 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
668 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
671 #define FF_I_TYPE 1 // Intra
672 #define FF_P_TYPE 2 // Predicted
673 #define FF_B_TYPE 3 // Bi-dir predicted
674 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
678 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
679 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
680 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
681 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
686 typedef struct AVFrame {
690 #define DEFAULT_FRAME_RATE_BASE 1001000
695 typedef struct AVCLASS AVClass;
697 const char* class_name;
698 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
699 or AVFormatContext, which begin with an AVClass.
700 Needed because av_log is in libavcodec and has no visibility
701 of AVIn/OutputFormat */
702 struct AVOption *option;
706 * main external api structure.
708 typedef struct AVCodecContext {
710 * Info on struct for av_log
711 * - set by avcodec_alloc_context
715 * the average bitrate.
716 * - encoding: set by user. unused for constant quantizer encoding
717 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
722 * number of bits the bitstream is allowed to diverge from the reference.
723 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
724 * - encoding: set by user. unused for constant quantizer encoding
727 int bit_rate_tolerance;
731 * - encoding: set by user.
732 * - decoding: set by user.
737 * some codecs needs additionnal format info. It is stored here
738 * - encoding: set by user.
739 * - decoding: set by lavc. (FIXME is this ok?)
744 * motion estimation algorithm used for video coding.
745 * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
746 * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
747 * - encoding: MUST be set by user.
753 * some codecs need / can use extra-data like huffman tables.
754 * mjpeg: huffman tables
755 * rv10: additional flags
756 * mpeg4: global headers (they can be in the bitstream or here)
757 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
758 * then extradata_size to avoid prolems if its read with the bitstream reader
759 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
760 * - encoding: set/allocated/freed by lavc.
761 * - decoding: set/allocated/freed by user.
767 * this is the fundamental unit of time (in seconds) in terms
768 * of which frame timestamps are represented. for fixed-fps content,
769 * timebase should be 1/framerate and timestamp increments should be
771 * - encoding: MUST be set by user
772 * - decoding: set by lavc.
774 AVRational time_base;
778 * picture width / height.
779 * - encoding: MUST be set by user.
780 * - decoding: set by lavc.
781 * Note, for compatibility its possible to set this instead of
782 * coded_width/height before decoding
786 #define FF_ASPECT_EXTENDED 15
789 * the number of pictures in a group of pitures, or 0 for intra_only.
790 * - encoding: set by user.
796 * pixel format, see PIX_FMT_xxx.
797 * - encoding: set by user.
798 * - decoding: set by lavc.
800 enum PixelFormat pix_fmt;
803 * Frame rate emulation. If not zero lower layer (i.e. format handler)
804 * has to read frames at native frame rate.
805 * - encoding: set by user.
806 * - decoding: unused.
811 * if non NULL, 'draw_horiz_band' is called by the libavcodec
812 * decoder to draw an horizontal band. It improve cache usage. Not
813 * all codecs can do that. You must check the codec capabilities
816 * - decoding: set by user.
817 * @param height the height of the slice
818 * @param y the y position of the slice
819 * @param type 1->top field, 2->bottom field, 3->frame
820 * @param offset offset into the AVFrame.data from which the slice should be read
822 void (*draw_horiz_band)(struct AVCodecContext *s,
823 const AVFrame *src, int offset[4],
824 int y, int type, int height);
827 int sample_rate; ///< samples per sec
831 * audio sample format.
832 * - encoding: set by user.
833 * - decoding: set by lavc.
835 enum SampleFormat sample_fmt; ///< sample format, currenly unused
837 /* the following data should not be initialized */
839 * samples per packet. initialized when calling 'init'
842 int frame_number; ///< audio or video frame number
843 int real_pict_num; ///< returns the real picture number of previous encoded frame
846 * number of frames the decoded output will be delayed relative to
848 * - encoding: set by lavc.
853 /* - encoding parameters */
854 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
855 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
859 * - encoding: set by user.
866 * - encoding: set by user.
872 * maximum quantizer difference etween frames.
873 * - encoding: set by user.
879 * maximum number of b frames between non b frames.
880 * note: the output will be delayed by max_b_frames+1 relative to the input
881 * - encoding: set by user.
887 * qscale factor between ip and b frames.
888 * - encoding: set by user.
891 float b_quant_factor;
893 /** obsolete FIXME remove */
895 int b_frame_strategy;
899 * deprecated in favor of skip_idct and skip_frame
901 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
905 struct AVCodec *codec;
909 /* unused, FIXME remove*/
912 int rtp_payload_size; /* The size of the RTP payload: the coder will */
913 /* do it's best to deliver a chunk with size */
914 /* below rtp_payload_size, the chunk will start */
915 /* with a start code on some codecs like H.263 */
916 /* This doesn't take account of any particular */
917 /* headers inside the transmited RTP payload */
920 /* The RTP callback: This function is called */
921 /* every time the encoder has a packet to send */
922 /* Depends on the encoder if the data starts */
923 /* with a Start Code (it should) H.263 does. */
924 /* mb_nb contains the number of macroblocks */
925 /* encoded in the RTP payload */
926 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
928 /* statistics, used for 2-pass encoding */
939 * number of bits used for the previously encoded frame.
940 * - encoding: set by lavc
946 * private data of the user, can be used to carry app specific stuff.
947 * - encoding: set by user
948 * - decoding: set by user
953 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
954 enum CodecID codec_id; /* see CODEC_ID_xxx */
957 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
958 * this is used to workaround some encoder bugs
959 * - encoding: set by user, if not then the default based on codec_id will be used
960 * - decoding: set by user, will be converted to upper case by lavc during init
962 unsigned int codec_tag;
965 * workaround bugs in encoders which sometimes cannot be detected automatically.
966 * - encoding: set by user
967 * - decoding: set by user
970 #define FF_BUG_AUTODETECT 1 ///< autodetection
971 #define FF_BUG_OLD_MSMPEG4 2
972 #define FF_BUG_XVID_ILACE 4
973 #define FF_BUG_UMP4 8
974 #define FF_BUG_NO_PADDING 16
975 #define FF_BUG_AMV 32
976 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
977 #define FF_BUG_QPEL_CHROMA 64
978 #define FF_BUG_STD_QPEL 128
979 #define FF_BUG_QPEL_CHROMA2 256
980 #define FF_BUG_DIRECT_BLOCKSIZE 512
981 #define FF_BUG_EDGE 1024
982 #define FF_BUG_HPEL_CHROMA 2048
983 #define FF_BUG_DC_CLIP 4096
984 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
985 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
988 * luma single coeff elimination threshold.
989 * - encoding: set by user
992 int luma_elim_threshold;
995 * chroma single coeff elimination threshold.
996 * - encoding: set by user
999 int chroma_elim_threshold;
1002 * strictly follow the std (MPEG4, ...).
1003 * - encoding: set by user
1004 * - decoding: unused
1006 int strict_std_compliance;
1007 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
1008 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
1009 #define FF_COMPLIANCE_NORMAL 0
1010 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
1011 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
1014 * qscale offset between ip and b frames.
1015 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1016 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1017 * - encoding: set by user.
1018 * - decoding: unused
1020 float b_quant_offset;
1023 * error resilience higher values will detect more errors but may missdetect
1024 * some more or less valid parts as errors.
1025 * - encoding: unused
1026 * - decoding: set by user
1028 int error_resilience;
1029 #define FF_ER_CAREFUL 1
1030 #define FF_ER_COMPLIANT 2
1031 #define FF_ER_AGGRESSIVE 3
1032 #define FF_ER_VERY_AGGRESSIVE 4
1035 * called at the beginning of each frame to get a buffer for it.
1036 * if pic.reference is set then the frame will be read later by lavc
1037 * avcodec_align_dimensions() should be used to find the required width and
1038 * height, as they normally need to be rounded up to the next multiple of 16
1039 * - encoding: unused
1040 * - decoding: set by lavc, user can override
1042 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1045 * called to release buffers which where allocated with get_buffer.
1046 * a released buffer can be reused in get_buffer()
1047 * pic.data[*] must be set to NULL
1048 * - encoding: unused
1049 * - decoding: set by lavc, user can override
1051 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1054 * if 1 the stream has a 1 frame delay during decoding.
1055 * - encoding: set by lavc
1056 * - decoding: set by lavc
1061 * number of bytes per packet if constant and known or 0
1062 * used by some WAV based audio codecs
1066 int parse_only; /* - decoding only: if true, only parsing is done
1067 (function avcodec_parse_frame()). The frame
1068 data is returned. Only MPEG codecs support this now. */
1071 * 0-> h263 quant 1-> mpeg quant.
1072 * - encoding: set by user.
1073 * - decoding: unused
1078 * pass1 encoding statistics output buffer.
1079 * - encoding: set by lavc
1080 * - decoding: unused
1085 * pass2 encoding statistics input buffer.
1086 * concatenated stuff from stats_out of pass1 should be placed here
1087 * - encoding: allocated/set/freed by user
1088 * - decoding: unused
1093 * ratecontrol qmin qmax limiting method.
1094 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1095 * - encoding: set by user.
1096 * - decoding: unused
1104 * ratecontrol override, see RcOverride.
1105 * - encoding: allocated/set/freed by user.
1106 * - decoding: unused
1108 RcOverride *rc_override;
1109 int rc_override_count;
1112 * rate control equation.
1113 * - encoding: set by user
1114 * - decoding: unused
1120 * - encoding: set by user.
1121 * - decoding: unused
1127 * - encoding: set by user.
1128 * - decoding: unused
1133 * decoder bitstream buffer size.
1134 * - encoding: set by user.
1135 * - decoding: unused
1138 float rc_buffer_aggressivity;
1141 * qscale factor between p and i frames.
1142 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1143 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1144 * - encoding: set by user.
1145 * - decoding: unused
1147 float i_quant_factor;
1150 * qscale offset between p and i frames.
1151 * - encoding: set by user.
1152 * - decoding: unused
1154 float i_quant_offset;
1157 * initial complexity for pass1 ratecontrol.
1158 * - encoding: set by user.
1159 * - decoding: unused
1161 float rc_initial_cplx;
1164 * dct algorithm, see FF_DCT_* below.
1165 * - encoding: set by user
1166 * - decoding: unused
1169 #define FF_DCT_AUTO 0
1170 #define FF_DCT_FASTINT 1
1171 #define FF_DCT_INT 2
1172 #define FF_DCT_MMX 3
1173 #define FF_DCT_MLIB 4
1174 #define FF_DCT_ALTIVEC 5
1175 #define FF_DCT_FAAN 6
1178 * luminance masking (0-> disabled).
1179 * - encoding: set by user
1180 * - decoding: unused
1185 * temporary complexity masking (0-> disabled).
1186 * - encoding: set by user
1187 * - decoding: unused
1189 float temporal_cplx_masking;
1192 * spatial complexity masking (0-> disabled).
1193 * - encoding: set by user
1194 * - decoding: unused
1196 float spatial_cplx_masking;
1199 * p block masking (0-> disabled).
1200 * - encoding: set by user
1201 * - decoding: unused
1206 * darkness masking (0-> disabled).
1207 * - encoding: set by user
1208 * - decoding: unused
1213 /* for binary compatibility */
1217 * idct algorithm, see FF_IDCT_* below.
1218 * - encoding: set by user
1219 * - decoding: set by user
1222 #define FF_IDCT_AUTO 0
1223 #define FF_IDCT_INT 1
1224 #define FF_IDCT_SIMPLE 2
1225 #define FF_IDCT_SIMPLEMMX 3
1226 #define FF_IDCT_LIBMPEG2MMX 4
1227 #define FF_IDCT_PS2 5
1228 #define FF_IDCT_MLIB 6
1229 #define FF_IDCT_ARM 7
1230 #define FF_IDCT_ALTIVEC 8
1231 #define FF_IDCT_SH4 9
1232 #define FF_IDCT_SIMPLEARM 10
1233 #define FF_IDCT_H264 11
1234 #define FF_IDCT_VP3 12
1235 #define FF_IDCT_IPP 13
1236 #define FF_IDCT_XVIDMMX 14
1240 * - encoding: set by lavc
1241 * - decoding: set by user (or 0)
1245 * slice offsets in the frame in bytes.
1246 * - encoding: set/allocated by lavc
1247 * - decoding: set/allocated by user (or NULL)
1252 * error concealment flags.
1253 * - encoding: unused
1254 * - decoding: set by user
1256 int error_concealment;
1257 #define FF_EC_GUESS_MVS 1
1258 #define FF_EC_DEBLOCK 2
1261 * dsp_mask could be add used to disable unwanted CPU features
1262 * CPU features (i.e. MMX, SSE. ...)
1264 * with FORCE flag you may instead enable given CPU features
1265 * (Dangerous: usable in case of misdetection, improper usage however will
1266 * result into program crash)
1269 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1270 /* lower 16 bits - CPU features */
1272 #define FF_MM_MMX 0x0001 /* standard MMX */
1273 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1274 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1275 #define FF_MM_SSE 0x0008 /* SSE functions */
1276 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1277 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1278 #endif /* HAVE_MMX */
1280 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1281 #endif /* HAVE_IWMMXT */
1284 * bits per sample/pixel from the demuxer (needed for huffyuv).
1285 * - encoding: set by lavc
1286 * - decoding: set by user
1288 int bits_per_sample;
1291 * prediction method (needed for huffyuv).
1292 * - encoding: set by user
1293 * - decoding: unused
1295 int prediction_method;
1296 #define FF_PRED_LEFT 0
1297 #define FF_PRED_PLANE 1
1298 #define FF_PRED_MEDIAN 2
1301 * sample aspect ratio (0 if unknown).
1302 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1303 * - encoding: set by user.
1304 * - decoding: set by lavc.
1306 AVRational sample_aspect_ratio;
1309 * the picture in the bitstream.
1310 * - encoding: set by lavc
1311 * - decoding: set by lavc
1313 AVFrame *coded_frame;
1317 * - encoding: set by user.
1318 * - decoding: set by user.
1321 #define FF_DEBUG_PICT_INFO 1
1322 #define FF_DEBUG_RC 2
1323 #define FF_DEBUG_BITSTREAM 4
1324 #define FF_DEBUG_MB_TYPE 8
1325 #define FF_DEBUG_QP 16
1326 #define FF_DEBUG_MV 32
1327 #define FF_DEBUG_DCT_COEFF 0x00000040
1328 #define FF_DEBUG_SKIP 0x00000080
1329 #define FF_DEBUG_STARTCODE 0x00000100
1330 #define FF_DEBUG_PTS 0x00000200
1331 #define FF_DEBUG_ER 0x00000400
1332 #define FF_DEBUG_MMCO 0x00000800
1333 #define FF_DEBUG_BUGS 0x00001000
1334 #define FF_DEBUG_VIS_QP 0x00002000
1335 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1339 * - encoding: set by user.
1340 * - decoding: set by user.
1343 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1344 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1345 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1349 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1350 * - decoding: unused
1355 * minimum MB quantizer.
1356 * - encoding: unused
1357 * - decoding: unused
1362 * maximum MB quantizer.
1363 * - encoding: unused
1364 * - decoding: unused
1369 * motion estimation compare function.
1370 * - encoding: set by user.
1371 * - decoding: unused
1375 * subpixel motion estimation compare function.
1376 * - encoding: set by user.
1377 * - decoding: unused
1381 * macroblock compare function (not supported yet).
1382 * - encoding: set by user.
1383 * - decoding: unused
1387 * interlaced dct compare function
1388 * - encoding: set by user.
1389 * - decoding: unused
1392 #define FF_CMP_SAD 0
1393 #define FF_CMP_SSE 1
1394 #define FF_CMP_SATD 2
1395 #define FF_CMP_DCT 3
1396 #define FF_CMP_PSNR 4
1397 #define FF_CMP_BIT 5
1399 #define FF_CMP_ZERO 7
1400 #define FF_CMP_VSAD 8
1401 #define FF_CMP_VSSE 9
1402 #define FF_CMP_NSSE 10
1403 #define FF_CMP_W53 11
1404 #define FF_CMP_W97 12
1405 #define FF_CMP_DCTMAX 13
1406 #define FF_CMP_DCT264 14
1407 #define FF_CMP_CHROMA 256
1410 * ME diamond size & shape.
1411 * - encoding: set by user.
1412 * - decoding: unused
1417 * amount of previous MV predictors (2a+1 x 2a+1 square).
1418 * - encoding: set by user.
1419 * - decoding: unused
1421 int last_predictor_count;
1424 * pre pass for motion estimation.
1425 * - encoding: set by user.
1426 * - decoding: unused
1431 * motion estimation pre pass compare function.
1432 * - encoding: set by user.
1433 * - decoding: unused
1438 * ME pre pass diamond size & shape.
1439 * - encoding: set by user.
1440 * - decoding: unused
1445 * subpel ME quality.
1446 * - encoding: set by user.
1447 * - decoding: unused
1449 int me_subpel_quality;
1452 * callback to negotiate the pixelFormat.
1453 * @param fmt is the list of formats which are supported by the codec,
1454 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1455 * the first is allways the native one
1456 * @return the choosen format
1457 * - encoding: unused
1458 * - decoding: set by user, if not set then the native format will always be choosen
1460 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1463 * DTG active format information (additionnal aspect ratio
1464 * information only used in DVB MPEG2 transport streams). 0 if
1467 * - encoding: unused.
1468 * - decoding: set by decoder
1470 int dtg_active_format;
1471 #define FF_DTG_AFD_SAME 8
1472 #define FF_DTG_AFD_4_3 9
1473 #define FF_DTG_AFD_16_9 10
1474 #define FF_DTG_AFD_14_9 11
1475 #define FF_DTG_AFD_4_3_SP_14_9 13
1476 #define FF_DTG_AFD_16_9_SP_14_9 14
1477 #define FF_DTG_AFD_SP_4_3 15
1480 * Maximum motion estimation search range in subpel units.
1481 * if 0 then no limit
1483 * - encoding: set by user.
1484 * - decoding: unused.
1489 * intra quantizer bias.
1490 * - encoding: set by user.
1491 * - decoding: unused
1493 int intra_quant_bias;
1494 #define FF_DEFAULT_QUANT_BIAS 999999
1497 * inter quantizer bias.
1498 * - encoding: set by user.
1499 * - decoding: unused
1501 int inter_quant_bias;
1505 * - encoding: unused.
1506 * - decoding: which clrtable should be used for 8bit RGB images
1507 * table have to be stored somewhere FIXME
1512 * internal_buffer count.
1513 * Don't touch, used by lavc default_get_buffer()
1515 int internal_buffer_count;
1519 * Don't touch, used by lavc default_get_buffer()
1521 void *internal_buffer;
1523 #define FF_LAMBDA_SHIFT 7
1524 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1525 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1526 #define FF_LAMBDA_MAX (256*128-1)
1528 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1530 * global quality for codecs which cannot change it per frame.
1531 * this should be proportional to MPEG1/2/4 qscale.
1532 * - encoding: set by user.
1533 * - decoding: unused
1537 #define FF_CODER_TYPE_VLC 0
1538 #define FF_CODER_TYPE_AC 1
1541 * - encoding: set by user.
1542 * - decoding: unused
1548 * - encoding: set by user.
1549 * - decoding: unused
1555 * - encoding: unused
1556 * - decoding: set by user.
1558 uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
1563 * - encoding: unused
1564 * - decoding: set by user.
1567 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1568 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1569 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1572 * XVideo Motion Acceleration
1573 * - encoding: forbidden
1574 * - decoding: set by decoder
1576 int xvmc_acceleration;
1579 * macroblock decision mode
1580 * - encoding: set by user.
1581 * - decoding: unused
1584 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1585 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1586 #define FF_MB_DECISION_RD 2 ///< rate distoration
1589 * custom intra quantization matrix
1590 * - encoding: set by user, can be NULL
1591 * - decoding: set by lavc
1593 uint16_t *intra_matrix;
1596 * custom inter quantization matrix
1597 * - encoding: set by user, can be NULL
1598 * - decoding: set by lavc
1600 uint16_t *inter_matrix;
1603 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1604 * this is used to workaround some encoder bugs
1605 * - encoding: unused
1606 * - decoding: set by user, will be converted to upper case by lavc during init
1608 unsigned int stream_codec_tag;
1611 * scene change detection threshold.
1612 * 0 is default, larger means fewer detected scene changes
1613 * - encoding: set by user.
1614 * - decoding: unused
1616 int scenechange_threshold;
1619 * minimum lagrange multipler
1620 * - encoding: set by user.
1621 * - decoding: unused
1626 * maximum lagrange multipler
1627 * - encoding: set by user.
1628 * - decoding: unused
1633 * Palette control structure
1634 * - encoding: ??? (no palette-enabled encoder yet)
1635 * - decoding: set by user.
1637 struct AVPaletteControl *palctrl;
1640 * noise reduction strength
1641 * - encoding: set by user.
1642 * - decoding: unused
1644 int noise_reduction;
1647 * called at the beginning of a frame to get cr buffer for it.
1648 * buffer type (size, hints) must be the same. lavc won't check it.
1649 * lavc will pass previous buffer in pic, function should return
1650 * same buffer or new buffer with old frame "painted" into it.
1651 * if pic.data[0] == NULL must behave like get_buffer().
1652 * - encoding: unused
1653 * - decoding: set by lavc, user can override
1655 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1658 * number of bits which should be loaded into the rc buffer before decoding starts
1659 * - encoding: set by user.
1660 * - decoding: unused
1662 int rc_initial_buffer_occupancy;
1666 * - encoding: set by user.
1667 * - decoding: unused
1669 int inter_threshold;
1673 * - encoding: set by user.
1674 * - decoding: set by user.
1679 * simulates errors in the bitstream to test error concealment.
1680 * - encoding: set by user.
1681 * - decoding: unused.
1686 * MP3 antialias algorithm, see FF_AA_* below.
1687 * - encoding: unused
1688 * - decoding: set by user
1691 #define FF_AA_AUTO 0
1692 #define FF_AA_FASTINT 1 //not implemented yet
1694 #define FF_AA_FLOAT 3
1696 * Quantizer noise shaping.
1697 * - encoding: set by user
1698 * - decoding: unused
1700 int quantizer_noise_shaping;
1704 * is used to decide how many independant tasks should be passed to execute()
1705 * - encoding: set by user
1706 * - decoding: set by user
1711 * the codec may call this to execute several independant things. it will return only after
1712 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1713 * default implementation will execute the parts serially
1714 * @param count the number of things to execute
1715 * - encoding: set by lavc, user can override
1716 * - decoding: set by lavc, user can override
1718 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1722 * can be used by execute() to store some per AVCodecContext stuff.
1723 * - encoding: set by execute()
1724 * - decoding: set by execute()
1726 void *thread_opaque;
1729 * Motion estimation threshold. under which no motion estimation is
1730 * performed, but instead the user specified motion vectors are used
1732 * - encoding: set by user
1733 * - decoding: unused
1738 * Macroblock threshold. under which the user specified macroblock types will be used
1739 * - encoding: set by user
1740 * - decoding: unused
1745 * precision of the intra dc coefficient - 8.
1746 * - encoding: set by user
1747 * - decoding: unused
1749 int intra_dc_precision;
1752 * noise vs. sse weight for the nsse comparsion function.
1753 * - encoding: set by user
1754 * - decoding: unused
1759 * number of macroblock rows at the top which are skipped.
1760 * - encoding: unused
1761 * - decoding: set by user
1766 * number of macroblock rows at the bottom which are skipped.
1767 * - encoding: unused
1768 * - decoding: set by user
1774 * - encoding: set by user
1775 * - decoding: set by lavc
1778 #define FF_PROFILE_UNKNOWN -99
1782 * - encoding: set by user
1783 * - decoding: set by lavc
1786 #define FF_LEVEL_UNKNOWN -99
1789 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1790 * - encoding: unused
1791 * - decoding: set by user
1796 * bitsream width / height. may be different from width/height if lowres
1797 * or other things are used
1798 * - encoding: unused
1799 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1801 int coded_width, coded_height;
1804 * frame skip threshold
1805 * - encoding: set by user
1806 * - decoding: unused
1808 int frame_skip_threshold;
1812 * - encoding: set by user
1813 * - decoding: unused
1815 int frame_skip_factor;
1818 * frame skip exponent
1819 * - encoding: set by user
1820 * - decoding: unused
1825 * frame skip comparission function
1826 * - encoding: set by user.
1827 * - decoding: unused
1832 * border processing masking. raises the quantizer for mbs on the borders
1834 * - encoding: set by user
1835 * - decoding: unused
1837 float border_masking;
1840 * minimum MB lagrange multipler.
1841 * - encoding: set by user.
1842 * - decoding: unused
1847 * maximum MB lagrange multipler.
1848 * - encoding: set by user.
1849 * - decoding: unused
1855 * - encoding: set by user.
1856 * - decoding: unused
1858 int me_penalty_compensation;
1862 * - encoding: unused
1863 * - decoding: set by user.
1865 enum AVDiscard skip_loop_filter;
1869 * - encoding: unused
1870 * - decoding: set by user.
1872 enum AVDiscard skip_idct;
1876 * - encoding: unused
1877 * - decoding: set by user.
1879 enum AVDiscard skip_frame;
1883 * - encoding: set by user.
1884 * - decoding: unused
1890 * - encoding: set by user.
1891 * - decoding: unused
1896 * constant rate factor - quality-based VBR - values ~correspond to qps
1897 * - encoding: set by user.
1898 * - decoding: unused
1903 * constant quantization parameter rate control method
1904 * - encoding: set by user.
1905 * - decoding: unused
1911 * - encoding: set by user.
1912 * - decoding: unused
1917 * number of reference frames
1918 * - encoding: set by user.
1919 * - decoding: unused
1924 * chroma qp offset from luma
1925 * - encoding: set by user.
1926 * - decoding: unused
1931 * influences how often b-frames are used
1932 * - encoding: set by user.
1933 * - decoding: unused
1938 * trellis RD quantization
1939 * - encoding: set by user.
1940 * - decoding: unused
1945 * reduce fluctuations in qp (before curve compression)
1946 * - encoding: set by user.
1947 * - decoding: unused
1949 float complexityblur;
1952 * in-loop deblocking filter alphac0 parameter
1953 * alpha is in the range -6...6
1954 * - encoding: set by user.
1955 * - decoding: unused
1960 * in-loop deblocking filter beta parameter
1961 * beta is in the range -6...6
1962 * - encoding: set by user.
1963 * - decoding: unused
1968 * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
1969 * - encoding: set by user.
1970 * - decoding: unused
1973 #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
1974 #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
1975 #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
1976 #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
1977 #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
1980 * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
1981 * - encoding: set by user.
1982 * - decoding: unused
1987 * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
1988 * - encoding: set by user.
1989 * - decoding: unused
1997 typedef struct AVCodec {
1999 enum CodecType type;
2002 int (*init)(AVCodecContext *);
2003 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
2004 int (*close)(AVCodecContext *);
2005 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
2006 uint8_t *buf, int buf_size);
2008 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
2009 void *dummy; // FIXME remove next time we break binary compatibility
2011 struct AVCodec *next;
2012 void (*flush)(AVCodecContext *);
2013 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
2014 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
2018 * four components are given, that's all.
2019 * the last component is alpha
2021 typedef struct AVPicture {
2023 int linesize[4]; ///< number of bytes per line
2028 * This structure defines a method for communicating palette changes
2029 * between and demuxer and a decoder.
2031 #define AVPALETTE_SIZE 1024
2032 #define AVPALETTE_COUNT 256
2033 typedef struct AVPaletteControl {
2035 /* demuxer sets this to 1 to indicate the palette has changed;
2036 * decoder resets to 0 */
2037 int palette_changed;
2039 /* 4-byte ARGB palette entries, stored in native byte order; note that
2040 * the individual palette components should be on a 8-bit scale; if
2041 * the palette data comes from a IBM VGA native format, the component
2042 * data is probably 6 bits in size and needs to be scaled */
2043 unsigned int palette[AVPALETTE_COUNT];
2047 typedef struct AVSubtitleRect {
2054 uint32_t *rgba_palette;
2058 typedef struct AVSubtitle {
2059 uint16_t format; /* 0 = graphics */
2060 uint32_t start_display_time; /* relative to packet pts, in ms */
2061 uint32_t end_display_time; /* relative to packet pts, in ms */
2063 AVSubtitleRect *rects;
2066 extern AVCodec ac3_encoder;
2067 extern AVCodec mp2_encoder;
2068 extern AVCodec mp3lame_encoder;
2069 extern AVCodec oggvorbis_encoder;
2070 extern AVCodec oggtheora_encoder;
2071 extern AVCodec faac_encoder;
2072 extern AVCodec xvid_encoder;
2073 extern AVCodec mpeg1video_encoder;
2074 extern AVCodec mpeg2video_encoder;
2075 extern AVCodec h261_encoder;
2076 extern AVCodec h263_encoder;
2077 extern AVCodec h263p_encoder;
2078 extern AVCodec flv_encoder;
2079 extern AVCodec rv10_encoder;
2080 extern AVCodec rv20_encoder;
2081 extern AVCodec dvvideo_encoder;
2082 extern AVCodec mjpeg_encoder;
2083 extern AVCodec ljpeg_encoder;
2084 extern AVCodec jpegls_encoder;
2085 extern AVCodec png_encoder;
2086 extern AVCodec ppm_encoder;
2087 extern AVCodec pgm_encoder;
2088 extern AVCodec pgmyuv_encoder;
2089 extern AVCodec pbm_encoder;
2090 extern AVCodec pam_encoder;
2091 extern AVCodec mpeg4_encoder;
2092 extern AVCodec msmpeg4v1_encoder;
2093 extern AVCodec msmpeg4v2_encoder;
2094 extern AVCodec msmpeg4v3_encoder;
2095 extern AVCodec wmv1_encoder;
2096 extern AVCodec wmv2_encoder;
2097 extern AVCodec huffyuv_encoder;
2098 extern AVCodec ffvhuff_encoder;
2099 extern AVCodec h264_encoder;
2100 extern AVCodec asv1_encoder;
2101 extern AVCodec asv2_encoder;
2102 extern AVCodec vcr1_encoder;
2103 extern AVCodec ffv1_encoder;
2104 extern AVCodec snow_encoder;
2105 extern AVCodec mdec_encoder;
2106 extern AVCodec zlib_encoder;
2107 extern AVCodec sonic_encoder;
2108 extern AVCodec sonic_ls_encoder;
2109 extern AVCodec svq1_encoder;
2110 extern AVCodec x264_encoder;
2112 extern AVCodec h263_decoder;
2113 extern AVCodec h261_decoder;
2114 extern AVCodec mpeg4_decoder;
2115 extern AVCodec msmpeg4v1_decoder;
2116 extern AVCodec msmpeg4v2_decoder;
2117 extern AVCodec msmpeg4v3_decoder;
2118 extern AVCodec wmv1_decoder;
2119 extern AVCodec wmv2_decoder;
2120 extern AVCodec vc9_decoder;
2121 extern AVCodec wmv3_decoder;
2122 extern AVCodec mpeg1video_decoder;
2123 extern AVCodec mpeg2video_decoder;
2124 extern AVCodec mpegvideo_decoder;
2125 extern AVCodec mpeg_xvmc_decoder;
2126 extern AVCodec h263i_decoder;
2127 extern AVCodec flv_decoder;
2128 extern AVCodec rv10_decoder;
2129 extern AVCodec rv20_decoder;
2130 extern AVCodec rv30_decoder;
2131 extern AVCodec rv40_decoder;
2132 extern AVCodec svq1_decoder;
2133 extern AVCodec svq3_decoder;
2134 extern AVCodec dvvideo_decoder;
2135 extern AVCodec wmav1_decoder;
2136 extern AVCodec wmav2_decoder;
2137 extern AVCodec mjpeg_decoder;
2138 extern AVCodec mjpegb_decoder;
2139 extern AVCodec sp5x_decoder;
2140 extern AVCodec png_decoder;
2141 extern AVCodec mp2_decoder;
2142 extern AVCodec mp3_decoder;
2143 extern AVCodec mp3adu_decoder;
2144 extern AVCodec mp3on4_decoder;
2145 extern AVCodec qdm2_decoder;
2146 extern AVCodec cook_decoder;
2147 extern AVCodec truespeech_decoder;
2148 extern AVCodec mace3_decoder;
2149 extern AVCodec mace6_decoder;
2150 extern AVCodec huffyuv_decoder;
2151 extern AVCodec ffvhuff_decoder;
2152 extern AVCodec oggvorbis_decoder;
2153 extern AVCodec oggtheora_decoder;
2154 extern AVCodec cyuv_decoder;
2155 extern AVCodec h264_decoder;
2156 extern AVCodec indeo3_decoder;
2157 extern AVCodec vp3_decoder;
2158 extern AVCodec theora_decoder;
2159 extern AVCodec amr_nb_decoder;
2160 extern AVCodec amr_nb_encoder;
2161 extern AVCodec amr_wb_encoder;
2162 extern AVCodec amr_wb_decoder;
2163 extern AVCodec aac_decoder;
2164 extern AVCodec mpeg4aac_decoder;
2165 extern AVCodec asv1_decoder;
2166 extern AVCodec asv2_decoder;
2167 extern AVCodec vcr1_decoder;
2168 extern AVCodec cljr_decoder;
2169 extern AVCodec ffv1_decoder;
2170 extern AVCodec snow_decoder;
2171 extern AVCodec fourxm_decoder;
2172 extern AVCodec mdec_decoder;
2173 extern AVCodec roq_decoder;
2174 extern AVCodec interplay_video_decoder;
2175 extern AVCodec xan_wc3_decoder;
2176 extern AVCodec rpza_decoder;
2177 extern AVCodec cinepak_decoder;
2178 extern AVCodec msrle_decoder;
2179 extern AVCodec msvideo1_decoder;
2180 extern AVCodec vqa_decoder;
2181 extern AVCodec idcin_decoder;
2182 extern AVCodec eightbps_decoder;
2183 extern AVCodec smc_decoder;
2184 extern AVCodec flic_decoder;
2185 extern AVCodec vmdvideo_decoder;
2186 extern AVCodec vmdaudio_decoder;
2187 extern AVCodec truemotion1_decoder;
2188 extern AVCodec truemotion2_decoder;
2189 extern AVCodec mszh_decoder;
2190 extern AVCodec zlib_decoder;
2191 extern AVCodec ra_144_decoder;
2192 extern AVCodec ra_288_decoder;
2193 extern AVCodec roq_dpcm_decoder;
2194 extern AVCodec interplay_dpcm_decoder;
2195 extern AVCodec xan_dpcm_decoder;
2196 extern AVCodec sol_dpcm_decoder;
2197 extern AVCodec sonic_decoder;
2198 extern AVCodec qtrle_decoder;
2199 extern AVCodec flac_decoder;
2200 extern AVCodec tscc_decoder;
2201 extern AVCodec cscd_decoder;
2202 extern AVCodec ulti_decoder;
2203 extern AVCodec qdraw_decoder;
2204 extern AVCodec xl_decoder;
2205 extern AVCodec qpeg_decoder;
2206 extern AVCodec shorten_decoder;
2207 extern AVCodec loco_decoder;
2208 extern AVCodec wnv1_decoder;
2209 extern AVCodec aasc_decoder;
2210 extern AVCodec alac_decoder;
2211 extern AVCodec ws_snd1_decoder;
2212 extern AVCodec indeo2_decoder;
2213 extern AVCodec vorbis_decoder;
2214 extern AVCodec fraps_decoder;
2215 extern AVCodec libgsm_encoder;
2216 extern AVCodec libgsm_decoder;
2217 extern AVCodec bmp_decoder;
2220 #define PCM_CODEC(id, name) \
2221 extern AVCodec name ## _decoder; \
2222 extern AVCodec name ## _encoder
2224 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2225 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2226 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2227 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2228 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2229 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2230 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2231 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2232 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2233 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2234 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2235 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2236 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2237 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2238 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2239 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2240 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2244 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2245 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2246 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2247 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2248 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2249 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2250 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2251 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2252 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2253 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2254 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2255 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2256 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2257 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2258 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2262 /* dummy raw video codec */
2263 extern AVCodec rawvideo_encoder;
2264 extern AVCodec rawvideo_decoder;
2266 /* the following codecs use external GPL libs */
2267 extern AVCodec ac3_decoder;
2268 extern AVCodec dts_decoder;
2271 extern AVCodec dvdsub_encoder;
2272 extern AVCodec dvdsub_decoder;
2273 extern AVCodec dvbsub_encoder;
2274 extern AVCodec dvbsub_decoder;
2278 struct ReSampleContext;
2279 struct AVResampleContext;
2281 typedef struct ReSampleContext ReSampleContext;
2283 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2284 int output_rate, int input_rate);
2285 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2286 void audio_resample_close(ReSampleContext *s);
2288 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2289 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2290 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2291 void av_resample_close(struct AVResampleContext *c);
2293 /* YUV420 format is assumed ! */
2295 struct ImgReSampleContext;
2297 typedef struct ImgReSampleContext ImgReSampleContext;
2299 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2300 int input_width, int input_height);
2302 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2303 int iwidth, int iheight,
2304 int topBand, int bottomBand,
2305 int leftBand, int rightBand,
2306 int padtop, int padbottom,
2307 int padleft, int padright);
2310 void img_resample(ImgReSampleContext *s,
2311 AVPicture *output, const AVPicture *input);
2313 void img_resample_close(ImgReSampleContext *s);
2316 * Allocate memory for a picture. Call avpicture_free to free it.
2318 * @param picture the picture to be filled in.
2319 * @param pix_fmt the format of the picture.
2320 * @param width the width of the picture.
2321 * @param height the height of the picture.
2322 * @return 0 if successful, -1 if not.
2324 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2326 /* Free a picture previously allocated by avpicture_alloc. */
2327 void avpicture_free(AVPicture *picture);
2329 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2330 int pix_fmt, int width, int height);
2331 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2332 unsigned char *dest, int dest_size);
2333 int avpicture_get_size(int pix_fmt, int width, int height);
2334 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2335 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2336 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2337 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2338 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2340 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2341 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2342 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2343 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2344 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2345 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2347 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2349 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2350 int has_alpha, int *loss_ptr);
2352 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2353 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2354 int img_get_alpha_info(const AVPicture *src,
2355 int pix_fmt, int width, int height);
2357 /* convert among pixel formats */
2358 int img_convert(AVPicture *dst, int dst_pix_fmt,
2359 const AVPicture *src, int pix_fmt,
2360 int width, int height);
2362 /* deinterlace a picture */
2363 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2364 int pix_fmt, int width, int height);
2366 /* external high level API */
2368 extern AVCodec *first_avcodec;
2370 /* returns LIBAVCODEC_VERSION_INT constant */
2371 unsigned avcodec_version(void);
2372 /* returns LIBAVCODEC_BUILD constant */
2373 unsigned avcodec_build(void);
2374 void avcodec_init(void);
2376 void register_avcodec(AVCodec *format);
2377 AVCodec *avcodec_find_encoder(enum CodecID id);
2378 AVCodec *avcodec_find_encoder_by_name(const char *name);
2379 AVCodec *avcodec_find_decoder(enum CodecID id);
2380 AVCodec *avcodec_find_decoder_by_name(const char *name);
2381 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2383 void avcodec_get_context_defaults(AVCodecContext *s);
2384 AVCodecContext *avcodec_alloc_context(void);
2385 void avcodec_get_frame_defaults(AVFrame *pic);
2386 AVFrame *avcodec_alloc_frame(void);
2388 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2389 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2390 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2391 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2392 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2393 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2395 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2396 void avcodec_thread_free(AVCodecContext *s);
2397 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2398 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2399 //FIXME func typedef
2402 * opens / inits the AVCodecContext.
2405 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2407 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2408 int *frame_size_ptr,
2409 uint8_t *buf, int buf_size);
2410 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2411 int *got_picture_ptr,
2412 uint8_t *buf, int buf_size);
2413 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2415 const uint8_t *buf, int buf_size);
2416 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2418 uint8_t *buf, int buf_size);
2419 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2420 const short *samples);
2421 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2422 const AVFrame *pict);
2423 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2424 const AVSubtitle *sub);
2426 int avcodec_close(AVCodecContext *avctx);
2428 void avcodec_register_all(void);
2430 void avcodec_flush_buffers(AVCodecContext *avctx);
2432 void avcodec_default_free_buffers(AVCodecContext *s);
2434 /* misc usefull functions */
2437 * returns a single letter to describe the picture type
2439 char av_get_pict_type_char(int pict_type);
2443 typedef struct AVCodecParserContext {
2445 struct AVCodecParser *parser;
2446 int64_t frame_offset; /* offset of the current frame */
2447 int64_t cur_offset; /* current offset
2448 (incremented by each av_parser_parse()) */
2449 int64_t last_frame_offset; /* offset of the last frame */
2451 int pict_type; /* XXX: put it back in AVCodecContext */
2452 int repeat_pict; /* XXX: put it back in AVCodecContext */
2453 int64_t pts; /* pts of the current frame */
2454 int64_t dts; /* dts of the current frame */
2459 int fetch_timestamp;
2461 #define AV_PARSER_PTS_NB 4
2462 int cur_frame_start_index;
2463 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2464 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2465 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2468 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2469 } AVCodecParserContext;
2471 typedef struct AVCodecParser {
2472 int codec_ids[5]; /* several codec IDs are permitted */
2474 int (*parser_init)(AVCodecParserContext *s);
2475 int (*parser_parse)(AVCodecParserContext *s,
2476 AVCodecContext *avctx,
2477 uint8_t **poutbuf, int *poutbuf_size,
2478 const uint8_t *buf, int buf_size);
2479 void (*parser_close)(AVCodecParserContext *s);
2480 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2481 struct AVCodecParser *next;
2484 extern AVCodecParser *av_first_parser;
2486 void av_register_codec_parser(AVCodecParser *parser);
2487 AVCodecParserContext *av_parser_init(int codec_id);
2488 int av_parser_parse(AVCodecParserContext *s,
2489 AVCodecContext *avctx,
2490 uint8_t **poutbuf, int *poutbuf_size,
2491 const uint8_t *buf, int buf_size,
2492 int64_t pts, int64_t dts);
2493 int av_parser_change(AVCodecParserContext *s,
2494 AVCodecContext *avctx,
2495 uint8_t **poutbuf, int *poutbuf_size,
2496 const uint8_t *buf, int buf_size, int keyframe);
2497 void av_parser_close(AVCodecParserContext *s);
2499 extern AVCodecParser mpegvideo_parser;
2500 extern AVCodecParser mpeg4video_parser;
2501 extern AVCodecParser h261_parser;
2502 extern AVCodecParser h263_parser;
2503 extern AVCodecParser h264_parser;
2504 extern AVCodecParser mjpeg_parser;
2505 extern AVCodecParser pnm_parser;
2506 extern AVCodecParser mpegaudio_parser;
2507 extern AVCodecParser ac3_parser;
2508 extern AVCodecParser dvdsub_parser;
2509 extern AVCodecParser dvbsub_parser;
2512 void *av_malloc(unsigned int size);
2513 void *av_mallocz(unsigned int size);
2514 void *av_realloc(void *ptr, unsigned int size);
2515 void av_free(void *ptr);
2516 char *av_strdup(const char *s);
2517 void av_freep(void *ptr);
2518 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2519 /* for static data only */
2520 /* call av_free_static to release all staticaly allocated tables */
2521 void av_free_static(void);
2522 void *av_mallocz_static(unsigned int size);
2523 void *av_realloc_static(void *ptr, unsigned int size);
2525 /* add by bero : in adx.c */
2526 int is_adx(const unsigned char *buf,size_t bufsize);
2528 void img_copy(AVPicture *dst, const AVPicture *src,
2529 int pix_fmt, int width, int height);
2535 #define AV_LOG_QUIET -1
2536 #define AV_LOG_ERROR 0
2537 #define AV_LOG_INFO 1
2538 #define AV_LOG_DEBUG 2
2541 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2543 extern void av_log(void*, int level, const char *fmt, ...);
2546 extern void av_vlog(void*, int level, const char *fmt, va_list);
2547 extern int av_log_get_level(void);
2548 extern void av_log_set_level(int);
2549 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2552 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2553 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2554 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2555 (((uint8_t*)(x))[1] << 16) | \
2556 (((uint8_t*)(x))[2] << 8) | \
2558 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2559 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2560 (((uint8_t*)(x))[2] << 16) | \
2561 (((uint8_t*)(x))[1] << 8) | \
2565 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2571 #endif /* AVCODEC_H */