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 ((50<<16)+(1<<8)+0)
25 #define LIBAVCODEC_VERSION 50.1.0
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,
74 CODEC_ID_INTERPLAY_VIDEO,
114 CODEC_ID_TRUEMOTION2,
116 /* various pcm "codecs" */
117 CODEC_ID_PCM_S16LE= 0x10000,
133 CODEC_ID_PCM_S24DAUD,
135 /* various adpcm codecs */
136 CODEC_ID_ADPCM_IMA_QT= 0x11000,
137 CODEC_ID_ADPCM_IMA_WAV,
138 CODEC_ID_ADPCM_IMA_DK3,
139 CODEC_ID_ADPCM_IMA_DK4,
140 CODEC_ID_ADPCM_IMA_WS,
141 CODEC_ID_ADPCM_IMA_SMJPEG,
150 CODEC_ID_ADPCM_YAMAHA,
153 CODEC_ID_AMR_NB= 0x12000,
156 /* RealAudio codecs*/
157 CODEC_ID_RA_144= 0x13000,
160 /* various DPCM codecs */
161 CODEC_ID_ROQ_DPCM= 0x14000,
162 CODEC_ID_INTERPLAY_DPCM,
166 CODEC_ID_MP2= 0x15000,
167 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
186 CODEC_ID_WESTWOOD_SND1,
190 CODEC_ID_OGGTHEORA= 0x16000,
192 /* subtitle codecs */
193 CODEC_ID_DVD_SUBTITLE= 0x17000,
194 CODEC_ID_DVB_SUBTITLE,
196 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
197 stream (only used by libavformat) */
200 /* CODEC_ID_MP3LAME is absolete */
201 #define CODEC_ID_MP3LAME CODEC_ID_MP3
204 CODEC_TYPE_UNKNOWN = -1,
212 * Pixel format. Notes:
214 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
215 * color is put together as:
216 * (A << 24) | (R << 16) | (G << 8) | B
217 * This is stored as BGRA on little endian CPU architectures and ARGB on
220 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
221 * image data is stored in AVFrame.data[0]. The palette is transported in
222 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
223 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
224 * also endian-specific). Note also that the individual RGB palette
225 * components stored in AVFrame.data[1] should be in the range 0..255.
226 * This is important as many custom PAL8 video codecs that were designed
227 * to run on the IBM VGA graphics adapter use 6-bit palette components.
231 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
232 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
233 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
234 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
235 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
236 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
237 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
238 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
239 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
240 PIX_FMT_RGB565, ///< always stored in cpu endianness
241 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
243 PIX_FMT_MONOWHITE, ///< 0 is white
244 PIX_FMT_MONOBLACK, ///< 0 is black
245 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
246 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
247 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
248 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
249 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
250 PIX_FMT_XVMC_MPEG2_IDCT,
251 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
252 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
256 /* currently unused, may be used if 24/32 bits samples ever supported */
258 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
259 SAMPLE_FMT_S32, ///< signed 32 bits
260 SAMPLE_FMT_FLT, ///< float
261 SAMPLE_FMT_DBL, ///< double
265 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
268 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
269 * this is mainly needed because some optimized bitstream readers read
270 * 32 or 64 bit at once and could read over the end<br>
271 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
272 * MPEG bitstreams could cause overread and segfault
274 #define FF_INPUT_BUFFER_PADDING_SIZE 8
277 * minimum encoding buffer size.
278 * used to avoid some checks during header writing
280 #define FF_MIN_BUFFER_SIZE 16384
282 /* motion estimation type, EPZS by default */
293 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
294 AVDISCARD_NONE =-16, ///< discard nothing
295 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
296 AVDISCARD_NONREF = 8, ///< discard all non reference
297 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
298 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
299 AVDISCARD_ALL = 48, ///< discard all
302 typedef struct RcOverride{
305 int qscale; // if this is 0 then quality_factor will be used instead
306 float quality_factor;
309 /* only for ME compatiblity with old apps */
310 extern int motion_estimation_method;
312 #define FF_MAX_B_FRAMES 8
315 these flags can be passed in AVCodecContext.flags before initing
316 Note: not everything is supported yet.
319 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
320 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
321 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
322 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
323 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
324 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
325 /* parent program gurantees that the input for b-frame containing streams is not written to
326 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
327 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
328 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
329 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
330 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
331 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
332 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
333 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
334 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
335 of only at frame boundaries */
336 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
337 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
338 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
339 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
340 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
341 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
342 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
343 /* Fx : Flag for h263+ extra options */
344 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
345 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
346 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
347 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
348 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
349 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
350 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
351 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
352 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
353 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
354 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
355 #define CODEC_FLAG_CLOSED_GOP 0x80000000
356 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
357 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
358 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
359 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
361 /* Unsupported options :
362 * Syntax Arithmetic coding (SAC)
363 * Reference Picture Selection
364 * Independant Segment Decoding */
366 /* codec capabilities */
368 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
370 * Codec uses get_buffer() for allocating buffers.
371 * direct rendering method 1
373 #define CODEC_CAP_DR1 0x0002
374 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
376 #define CODEC_CAP_PARSE_ONLY 0x0004
377 #define CODEC_CAP_TRUNCATED 0x0008
378 /* codec can export data for HW decoding (XvMC) */
379 #define CODEC_CAP_HWACCEL 0x0010
381 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
382 * if this is not set, the codec is guranteed to never be feeded with NULL data
384 #define CODEC_CAP_DELAY 0x0020
386 //the following defines may change, don't expect compatibility if you use them
387 #define MB_TYPE_INTRA4x4 0x0001
388 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
389 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
390 #define MB_TYPE_16x16 0x0008
391 #define MB_TYPE_16x8 0x0010
392 #define MB_TYPE_8x16 0x0020
393 #define MB_TYPE_8x8 0x0040
394 #define MB_TYPE_INTERLACED 0x0080
395 #define MB_TYPE_DIRECT2 0x0100 //FIXME
396 #define MB_TYPE_ACPRED 0x0200
397 #define MB_TYPE_GMC 0x0400
398 #define MB_TYPE_SKIP 0x0800
399 #define MB_TYPE_P0L0 0x1000
400 #define MB_TYPE_P1L0 0x2000
401 #define MB_TYPE_P0L1 0x4000
402 #define MB_TYPE_P1L1 0x8000
403 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
404 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
405 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
406 #define MB_TYPE_QUANT 0x00010000
407 #define MB_TYPE_CBP 0x00020000
408 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
412 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
414 typedef struct AVPanScan{
417 * - encoding: set by user.
418 * - decoding: set by lavc
423 * width and height in 1/16 pel
424 * - encoding: set by user.
425 * - decoding: set by lavc
431 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
432 * - encoding: set by user.
433 * - decoding: set by lavc
435 int16_t position[3][2];
438 #define FF_COMMON_FRAME \
440 * pointer to the picture planes.\
441 * this might be different from the first allocated byte\
448 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
449 * this isn't used by lavc unless the default get/release_buffer() is used\
455 * 1 -> keyframe, 0-> not\
456 * - encoding: set by lavc\
457 * - decoding: set by lavc\
462 * picture type of the frame, see ?_TYPE below.\
463 * - encoding: set by lavc for coded_picture (and set by user for input)\
464 * - decoding: set by lavc\
469 * presentation timestamp in time_base units (time when frame should be shown to user)\
470 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
471 * - encoding: MUST be set by user\
472 * - decoding: set by lavc\
477 * picture number in bitstream order.\
478 * - encoding: set by\
479 * - decoding: set by lavc\
481 int coded_picture_number;\
483 * picture number in display order.\
484 * - encoding: set by\
485 * - decoding: set by lavc\
487 int display_picture_number;\
490 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
491 * - encoding: set by lavc for coded_picture (and set by user for input)\
492 * - decoding: set by lavc\
497 * buffer age (1->was last buffer and dint change, 2->..., ...).\
498 * set to INT_MAX if the buffer has not been used yet \
499 * - encoding: unused\
500 * - decoding: MUST be set by get_buffer()\
505 * is this picture used as reference\
506 * - encoding: unused\
507 * - decoding: set by lavc (before get_buffer() call))\
513 * - encoding: unused\
514 * - decoding: set by lavc\
516 int8_t *qscale_table;\
519 * - encoding: unused\
520 * - decoding: set by lavc\
525 * mbskip_table[mb]>=1 if MB didnt change\
526 * stride= mb_width = (width+15)>>4\
527 * - encoding: unused\
528 * - decoding: set by lavc\
530 uint8_t *mbskip_table;\
533 * Motion vector table.\
536 * int mv_sample_log2= 4 - motion_subsample_log2;\
537 * int mb_width= (width+15)>>4;\
538 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
539 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
541 * - encoding: set by user\
542 * - decoding: set by lavc\
544 int16_t (*motion_val[2])[2];\
547 * Macroblock type table\
548 * mb_type_base + mb_width + 2\
549 * - encoding: set by user\
550 * - decoding: set by lavc\
555 * log2 of the size of the block which a single vector in motion_val represents: \
556 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
557 * - encoding: unused\
558 * - decoding: set by lavc\
560 uint8_t motion_subsample_log2;\
563 * for some private data of the user\
564 * - encoding: unused\
565 * - decoding: set by user\
571 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
572 * - decoding: unused\
577 * type of the buffer (to keep track of who has to dealloc data[*])\
578 * - encoding: set by the one who allocs it\
579 * - decoding: set by the one who allocs it\
580 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
585 * when decoding, this signal how much the picture must be delayed.\
586 * extra_delay = repeat_pict / (2*fps)\
587 * - encoding: unused\
588 * - decoding: set by lavc\
598 * The content of the picture is interlaced.\
599 * - encoding: set by user\
600 * - decoding: set by lavc (default 0)\
602 int interlaced_frame;\
605 * if the content is interlaced, is top field displayed first.\
606 * - encoding: set by user\
607 * - decoding: set by lavc\
609 int top_field_first;\
613 * - encoding: set by user\
614 * - decoding: set by lavc\
616 AVPanScan *pan_scan;\
619 * tell user application that palette has changed from previous frame.\
620 * - encoding: ??? (no palette-enabled encoder yet)\
621 * - decoding: set by lavc (default 0)\
623 int palette_has_changed;\
626 * Codec suggestion on buffer type if != 0\
627 * - encoding: unused\
628 * - decoding: set by lavc (before get_buffer() call))\
634 * - encoding: unused\
635 * - decoding: set by lavc\
640 * Motion referece frame index\
641 * - encoding: set by user\
642 * - decoding: set by lavc\
644 int8_t *ref_index[2];
646 #define FF_QSCALE_TYPE_MPEG1 0
647 #define FF_QSCALE_TYPE_MPEG2 1
649 #define FF_BUFFER_TYPE_INTERNAL 1
650 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
651 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
652 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
655 #define FF_I_TYPE 1 // Intra
656 #define FF_P_TYPE 2 // Predicted
657 #define FF_B_TYPE 3 // Bi-dir predicted
658 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
662 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
663 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
664 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
665 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
670 typedef struct AVFrame {
674 #define DEFAULT_FRAME_RATE_BASE 1001000
679 typedef struct AVCLASS AVClass;
681 const char* class_name;
682 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
683 or AVFormatContext, which begin with an AVClass.
684 Needed because av_log is in libavcodec and has no visibility
685 of AVIn/OutputFormat */
686 struct AVOption *option;
690 * main external api structure.
692 typedef struct AVCodecContext {
694 * Info on struct for av_log
695 * - set by avcodec_alloc_context
699 * the average bitrate.
700 * - encoding: set by user. unused for constant quantizer encoding
701 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
706 * number of bits the bitstream is allowed to diverge from the reference.
707 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
708 * - encoding: set by user. unused for constant quantizer encoding
711 int bit_rate_tolerance;
715 * - encoding: set by user.
716 * - decoding: set by user.
721 * some codecs needs additionnal format info. It is stored here
722 * - encoding: set by user.
723 * - decoding: set by lavc. (FIXME is this ok?)
728 * motion estimation algorithm used for video coding.
729 * - encoding: MUST be set by user.
735 * some codecs need / can use extra-data like huffman tables.
736 * mjpeg: huffman tables
737 * rv10: additional flags
738 * mpeg4: global headers (they can be in the bitstream or here)
739 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
740 * then extradata_size to avoid prolems if its read with the bitstream reader
741 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
742 * - encoding: set/allocated/freed by lavc.
743 * - decoding: set/allocated/freed by user.
749 * this is the fundamental unit of time (in seconds) in terms
750 * of which frame timestamps are represented. for fixed-fps content,
751 * timebase should be 1/framerate and timestamp increments should be
753 * - encoding: MUST be set by user
754 * - decoding: set by lavc.
756 AVRational time_base;
760 * picture width / height.
761 * - encoding: MUST be set by user.
762 * - decoding: set by lavc.
763 * Note, for compatibility its possible to set this instead of
764 * coded_width/height before decoding
768 #define FF_ASPECT_EXTENDED 15
771 * the number of pictures in a group of pitures, or 0 for intra_only.
772 * - encoding: set by user.
778 * pixel format, see PIX_FMT_xxx.
779 * - encoding: set by user.
780 * - decoding: set by lavc.
782 enum PixelFormat pix_fmt;
785 * Frame rate emulation. If not zero lower layer (i.e. format handler)
786 * has to read frames at native frame rate.
787 * - encoding: set by user.
788 * - decoding: unused.
793 * if non NULL, 'draw_horiz_band' is called by the libavcodec
794 * decoder to draw an horizontal band. It improve cache usage. Not
795 * all codecs can do that. You must check the codec capabilities
798 * - decoding: set by user.
799 * @param height the height of the slice
800 * @param y the y position of the slice
801 * @param type 1->top field, 2->bottom field, 3->frame
802 * @param offset offset into the AVFrame.data from which the slice should be read
804 void (*draw_horiz_band)(struct AVCodecContext *s,
805 const AVFrame *src, int offset[4],
806 int y, int type, int height);
809 int sample_rate; ///< samples per sec
813 * audio sample format.
814 * - encoding: set by user.
815 * - decoding: set by lavc.
817 enum SampleFormat sample_fmt; ///< sample format, currenly unused
819 /* the following data should not be initialized */
821 * samples per packet. initialized when calling 'init'
824 int frame_number; ///< audio or video frame number
825 int real_pict_num; ///< returns the real picture number of previous encoded frame
828 * number of frames the decoded output will be delayed relative to
830 * - encoding: set by lavc.
835 /* - encoding parameters */
836 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
837 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
841 * - encoding: set by user.
848 * - encoding: set by user.
854 * maximum quantizer difference etween frames.
855 * - encoding: set by user.
861 * maximum number of b frames between non b frames.
862 * note: the output will be delayed by max_b_frames+1 relative to the input
863 * - encoding: set by user.
869 * qscale factor between ip and b frames.
870 * - encoding: set by user.
873 float b_quant_factor;
875 /** obsolete FIXME remove */
877 int b_frame_strategy;
881 * deprecated in favor of skip_idct and skip_frame
883 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
887 struct AVCodec *codec;
891 /* unused, FIXME remove*/
894 int rtp_payload_size; /* The size of the RTP payload: the coder will */
895 /* do it's best to deliver a chunk with size */
896 /* below rtp_payload_size, the chunk will start */
897 /* with a start code on some codecs like H.263 */
898 /* This doesn't take account of any particular */
899 /* headers inside the transmited RTP payload */
902 /* The RTP callback: This function is called */
903 /* every time the encoder has a packet to send */
904 /* Depends on the encoder if the data starts */
905 /* with a Start Code (it should) H.263 does. */
906 /* mb_nb contains the number of macroblocks */
907 /* encoded in the RTP payload */
908 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
910 /* statistics, used for 2-pass encoding */
921 * number of bits used for the previously encoded frame.
922 * - encoding: set by lavc
928 * private data of the user, can be used to carry app specific stuff.
929 * - encoding: set by user
930 * - decoding: set by user
935 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
936 enum CodecID codec_id; /* see CODEC_ID_xxx */
939 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
940 * this is used to workaround some encoder bugs
941 * - encoding: set by user, if not then the default based on codec_id will be used
942 * - decoding: set by user, will be converted to upper case by lavc during init
944 unsigned int codec_tag;
947 * workaround bugs in encoders which sometimes cannot be detected automatically.
948 * - encoding: set by user
949 * - decoding: set by user
952 #define FF_BUG_AUTODETECT 1 ///< autodetection
953 #define FF_BUG_OLD_MSMPEG4 2
954 #define FF_BUG_XVID_ILACE 4
955 #define FF_BUG_UMP4 8
956 #define FF_BUG_NO_PADDING 16
957 #define FF_BUG_AMV 32
958 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
959 #define FF_BUG_QPEL_CHROMA 64
960 #define FF_BUG_STD_QPEL 128
961 #define FF_BUG_QPEL_CHROMA2 256
962 #define FF_BUG_DIRECT_BLOCKSIZE 512
963 #define FF_BUG_EDGE 1024
964 #define FF_BUG_HPEL_CHROMA 2048
965 #define FF_BUG_DC_CLIP 4096
966 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
967 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
970 * luma single coeff elimination threshold.
971 * - encoding: set by user
974 int luma_elim_threshold;
977 * chroma single coeff elimination threshold.
978 * - encoding: set by user
981 int chroma_elim_threshold;
984 * strictly follow the std (MPEG4, ...).
985 * - encoding: set by user
988 int strict_std_compliance;
989 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
990 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
991 #define FF_COMPLIANCE_NORMAL 0
992 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
993 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
996 * qscale offset between ip and b frames.
997 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
998 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
999 * - encoding: set by user.
1000 * - decoding: unused
1002 float b_quant_offset;
1005 * error resilience higher values will detect more errors but may missdetect
1006 * some more or less valid parts as errors.
1007 * - encoding: unused
1008 * - decoding: set by user
1010 int error_resilience;
1011 #define FF_ER_CAREFUL 1
1012 #define FF_ER_COMPLIANT 2
1013 #define FF_ER_AGGRESSIVE 3
1014 #define FF_ER_VERY_AGGRESSIVE 4
1017 * called at the beginning of each frame to get a buffer for it.
1018 * if pic.reference is set then the frame will be read later by lavc
1019 * avcodec_align_dimensions() should be used to find the required width and
1020 * height, as they normally need to be rounded up to the next multiple of 16
1021 * - encoding: unused
1022 * - decoding: set by lavc, user can override
1024 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1027 * called to release buffers which where allocated with get_buffer.
1028 * a released buffer can be reused in get_buffer()
1029 * pic.data[*] must be set to NULL
1030 * - encoding: unused
1031 * - decoding: set by lavc, user can override
1033 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1036 * if 1 the stream has a 1 frame delay during decoding.
1037 * - encoding: set by lavc
1038 * - decoding: set by lavc
1043 * number of bytes per packet if constant and known or 0
1044 * used by some WAV based audio codecs
1048 int parse_only; /* - decoding only: if true, only parsing is done
1049 (function avcodec_parse_frame()). The frame
1050 data is returned. Only MPEG codecs support this now. */
1053 * 0-> h263 quant 1-> mpeg quant.
1054 * - encoding: set by user.
1055 * - decoding: unused
1060 * pass1 encoding statistics output buffer.
1061 * - encoding: set by lavc
1062 * - decoding: unused
1067 * pass2 encoding statistics input buffer.
1068 * concatenated stuff from stats_out of pass1 should be placed here
1069 * - encoding: allocated/set/freed by user
1070 * - decoding: unused
1075 * ratecontrol qmin qmax limiting method.
1076 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1077 * - encoding: set by user.
1078 * - decoding: unused
1086 * ratecontrol override, see RcOverride.
1087 * - encoding: allocated/set/freed by user.
1088 * - decoding: unused
1090 RcOverride *rc_override;
1091 int rc_override_count;
1094 * rate control equation.
1095 * - encoding: set by user
1096 * - decoding: unused
1102 * - encoding: set by user.
1103 * - decoding: unused
1109 * - encoding: set by user.
1110 * - decoding: unused
1115 * decoder bitstream buffer size.
1116 * - encoding: set by user.
1117 * - decoding: unused
1120 float rc_buffer_aggressivity;
1123 * qscale factor between p and i frames.
1124 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1125 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1126 * - encoding: set by user.
1127 * - decoding: unused
1129 float i_quant_factor;
1132 * qscale offset between p and i frames.
1133 * - encoding: set by user.
1134 * - decoding: unused
1136 float i_quant_offset;
1139 * initial complexity for pass1 ratecontrol.
1140 * - encoding: set by user.
1141 * - decoding: unused
1143 float rc_initial_cplx;
1146 * dct algorithm, see FF_DCT_* below.
1147 * - encoding: set by user
1148 * - decoding: unused
1151 #define FF_DCT_AUTO 0
1152 #define FF_DCT_FASTINT 1
1153 #define FF_DCT_INT 2
1154 #define FF_DCT_MMX 3
1155 #define FF_DCT_MLIB 4
1156 #define FF_DCT_ALTIVEC 5
1157 #define FF_DCT_FAAN 6
1160 * luminance masking (0-> disabled).
1161 * - encoding: set by user
1162 * - decoding: unused
1167 * temporary complexity masking (0-> disabled).
1168 * - encoding: set by user
1169 * - decoding: unused
1171 float temporal_cplx_masking;
1174 * spatial complexity masking (0-> disabled).
1175 * - encoding: set by user
1176 * - decoding: unused
1178 float spatial_cplx_masking;
1181 * p block masking (0-> disabled).
1182 * - encoding: set by user
1183 * - decoding: unused
1188 * darkness masking (0-> disabled).
1189 * - encoding: set by user
1190 * - decoding: unused
1195 /* for binary compatibility */
1199 * idct algorithm, see FF_IDCT_* below.
1200 * - encoding: set by user
1201 * - decoding: set by user
1204 #define FF_IDCT_AUTO 0
1205 #define FF_IDCT_INT 1
1206 #define FF_IDCT_SIMPLE 2
1207 #define FF_IDCT_SIMPLEMMX 3
1208 #define FF_IDCT_LIBMPEG2MMX 4
1209 #define FF_IDCT_PS2 5
1210 #define FF_IDCT_MLIB 6
1211 #define FF_IDCT_ARM 7
1212 #define FF_IDCT_ALTIVEC 8
1213 #define FF_IDCT_SH4 9
1214 #define FF_IDCT_SIMPLEARM 10
1215 #define FF_IDCT_H264 11
1216 #define FF_IDCT_VP3 12
1217 #define FF_IDCT_IPP 13
1218 #define FF_IDCT_XVIDMMX 14
1222 * - encoding: set by lavc
1223 * - decoding: set by user (or 0)
1227 * slice offsets in the frame in bytes.
1228 * - encoding: set/allocated by lavc
1229 * - decoding: set/allocated by user (or NULL)
1234 * error concealment flags.
1235 * - encoding: unused
1236 * - decoding: set by user
1238 int error_concealment;
1239 #define FF_EC_GUESS_MVS 1
1240 #define FF_EC_DEBLOCK 2
1243 * dsp_mask could be add used to disable unwanted CPU features
1244 * CPU features (i.e. MMX, SSE. ...)
1246 * with FORCE flag you may instead enable given CPU features
1247 * (Dangerous: usable in case of misdetection, improper usage however will
1248 * result into program crash)
1251 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1252 /* lower 16 bits - CPU features */
1254 #define FF_MM_MMX 0x0001 /* standard MMX */
1255 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1256 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1257 #define FF_MM_SSE 0x0008 /* SSE functions */
1258 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1259 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1260 #endif /* HAVE_MMX */
1262 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1263 #endif /* HAVE_IWMMXT */
1266 * bits per sample/pixel from the demuxer (needed for huffyuv).
1267 * - encoding: set by lavc
1268 * - decoding: set by user
1270 int bits_per_sample;
1273 * prediction method (needed for huffyuv).
1274 * - encoding: set by user
1275 * - decoding: unused
1277 int prediction_method;
1278 #define FF_PRED_LEFT 0
1279 #define FF_PRED_PLANE 1
1280 #define FF_PRED_MEDIAN 2
1283 * sample aspect ratio (0 if unknown).
1284 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1285 * - encoding: set by user.
1286 * - decoding: set by lavc.
1288 AVRational sample_aspect_ratio;
1291 * the picture in the bitstream.
1292 * - encoding: set by lavc
1293 * - decoding: set by lavc
1295 AVFrame *coded_frame;
1299 * - encoding: set by user.
1300 * - decoding: set by user.
1303 #define FF_DEBUG_PICT_INFO 1
1304 #define FF_DEBUG_RC 2
1305 #define FF_DEBUG_BITSTREAM 4
1306 #define FF_DEBUG_MB_TYPE 8
1307 #define FF_DEBUG_QP 16
1308 #define FF_DEBUG_MV 32
1309 #define FF_DEBUG_DCT_COEFF 0x00000040
1310 #define FF_DEBUG_SKIP 0x00000080
1311 #define FF_DEBUG_STARTCODE 0x00000100
1312 #define FF_DEBUG_PTS 0x00000200
1313 #define FF_DEBUG_ER 0x00000400
1314 #define FF_DEBUG_MMCO 0x00000800
1315 #define FF_DEBUG_BUGS 0x00001000
1316 #define FF_DEBUG_VIS_QP 0x00002000
1317 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1321 * - encoding: set by user.
1322 * - decoding: set by user.
1325 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1326 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1327 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1331 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1332 * - decoding: unused
1337 * minimum MB quantizer.
1338 * - encoding: unused
1339 * - decoding: unused
1344 * maximum MB quantizer.
1345 * - encoding: unused
1346 * - decoding: unused
1351 * motion estimation compare function.
1352 * - encoding: set by user.
1353 * - decoding: unused
1357 * subpixel motion estimation compare function.
1358 * - encoding: set by user.
1359 * - decoding: unused
1363 * macroblock compare function (not supported yet).
1364 * - encoding: set by user.
1365 * - decoding: unused
1369 * interlaced dct compare function
1370 * - encoding: set by user.
1371 * - decoding: unused
1374 #define FF_CMP_SAD 0
1375 #define FF_CMP_SSE 1
1376 #define FF_CMP_SATD 2
1377 #define FF_CMP_DCT 3
1378 #define FF_CMP_PSNR 4
1379 #define FF_CMP_BIT 5
1381 #define FF_CMP_ZERO 7
1382 #define FF_CMP_VSAD 8
1383 #define FF_CMP_VSSE 9
1384 #define FF_CMP_NSSE 10
1385 #define FF_CMP_W53 11
1386 #define FF_CMP_W97 12
1387 #define FF_CMP_DCTMAX 13
1388 #define FF_CMP_CHROMA 256
1391 * ME diamond size & shape.
1392 * - encoding: set by user.
1393 * - decoding: unused
1398 * amount of previous MV predictors (2a+1 x 2a+1 square).
1399 * - encoding: set by user.
1400 * - decoding: unused
1402 int last_predictor_count;
1405 * pre pass for motion estimation.
1406 * - encoding: set by user.
1407 * - decoding: unused
1412 * motion estimation pre pass compare function.
1413 * - encoding: set by user.
1414 * - decoding: unused
1419 * ME pre pass diamond size & shape.
1420 * - encoding: set by user.
1421 * - decoding: unused
1426 * subpel ME quality.
1427 * - encoding: set by user.
1428 * - decoding: unused
1430 int me_subpel_quality;
1433 * callback to negotiate the pixelFormat.
1434 * @param fmt is the list of formats which are supported by the codec,
1435 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1436 * the first is allways the native one
1437 * @return the choosen format
1438 * - encoding: unused
1439 * - decoding: set by user, if not set then the native format will always be choosen
1441 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1444 * DTG active format information (additionnal aspect ratio
1445 * information only used in DVB MPEG2 transport streams). 0 if
1448 * - encoding: unused.
1449 * - decoding: set by decoder
1451 int dtg_active_format;
1452 #define FF_DTG_AFD_SAME 8
1453 #define FF_DTG_AFD_4_3 9
1454 #define FF_DTG_AFD_16_9 10
1455 #define FF_DTG_AFD_14_9 11
1456 #define FF_DTG_AFD_4_3_SP_14_9 13
1457 #define FF_DTG_AFD_16_9_SP_14_9 14
1458 #define FF_DTG_AFD_SP_4_3 15
1461 * Maximum motion estimation search range in subpel units.
1462 * if 0 then no limit
1464 * - encoding: set by user.
1465 * - decoding: unused.
1470 * intra quantizer bias.
1471 * - encoding: set by user.
1472 * - decoding: unused
1474 int intra_quant_bias;
1475 #define FF_DEFAULT_QUANT_BIAS 999999
1478 * inter quantizer bias.
1479 * - encoding: set by user.
1480 * - decoding: unused
1482 int inter_quant_bias;
1486 * - encoding: unused.
1487 * - decoding: which clrtable should be used for 8bit RGB images
1488 * table have to be stored somewhere FIXME
1493 * internal_buffer count.
1494 * Don't touch, used by lavc default_get_buffer()
1496 int internal_buffer_count;
1500 * Don't touch, used by lavc default_get_buffer()
1502 void *internal_buffer;
1504 #define FF_LAMBDA_SHIFT 7
1505 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1506 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1507 #define FF_LAMBDA_MAX (256*128-1)
1509 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1511 * global quality for codecs which cannot change it per frame.
1512 * this should be proportional to MPEG1/2/4 qscale.
1513 * - encoding: set by user.
1514 * - decoding: unused
1518 #define FF_CODER_TYPE_VLC 0
1519 #define FF_CODER_TYPE_AC 1
1522 * - encoding: set by user.
1523 * - decoding: unused
1529 * - encoding: set by user.
1530 * - decoding: unused
1536 * - encoding: unused
1537 * - decoding: set by user.
1540 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1541 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1542 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1545 * XVideo Motion Acceleration
1546 * - encoding: forbidden
1547 * - decoding: set by decoder
1549 int xvmc_acceleration;
1552 * macroblock decision mode
1553 * - encoding: set by user.
1554 * - decoding: unused
1557 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1558 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1559 #define FF_MB_DECISION_RD 2 ///< rate distoration
1562 * custom intra quantization matrix
1563 * - encoding: set by user, can be NULL
1564 * - decoding: set by lavc
1566 uint16_t *intra_matrix;
1569 * custom inter quantization matrix
1570 * - encoding: set by user, can be NULL
1571 * - decoding: set by lavc
1573 uint16_t *inter_matrix;
1576 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1577 * this is used to workaround some encoder bugs
1578 * - encoding: unused
1579 * - decoding: set by user, will be converted to upper case by lavc during init
1581 unsigned int stream_codec_tag;
1584 * scene change detection threshold.
1585 * 0 is default, larger means fewer detected scene changes
1586 * - encoding: set by user.
1587 * - decoding: unused
1589 int scenechange_threshold;
1592 * minimum lagrange multipler
1593 * - encoding: set by user.
1594 * - decoding: unused
1599 * maximum lagrange multipler
1600 * - encoding: set by user.
1601 * - decoding: unused
1606 * Palette control structure
1607 * - encoding: ??? (no palette-enabled encoder yet)
1608 * - decoding: set by user.
1610 struct AVPaletteControl *palctrl;
1613 * noise reduction strength
1614 * - encoding: set by user.
1615 * - decoding: unused
1617 int noise_reduction;
1620 * called at the beginning of a frame to get cr buffer for it.
1621 * buffer type (size, hints) must be the same. lavc won't check it.
1622 * lavc will pass previous buffer in pic, function should return
1623 * same buffer or new buffer with old frame "painted" into it.
1624 * if pic.data[0] == NULL must behave like get_buffer().
1625 * - encoding: unused
1626 * - decoding: set by lavc, user can override
1628 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1631 * number of bits which should be loaded into the rc buffer before decoding starts
1632 * - encoding: set by user.
1633 * - decoding: unused
1635 int rc_initial_buffer_occupancy;
1639 * - encoding: set by user.
1640 * - decoding: unused
1642 int inter_threshold;
1646 * - encoding: set by user.
1647 * - decoding: set by user.
1652 * simulates errors in the bitstream to test error concealment.
1653 * - encoding: set by user.
1654 * - decoding: unused.
1659 * MP3 antialias algorithm, see FF_AA_* below.
1660 * - encoding: unused
1661 * - decoding: set by user
1664 #define FF_AA_AUTO 0
1665 #define FF_AA_FASTINT 1 //not implemented yet
1667 #define FF_AA_FLOAT 3
1669 * Quantizer noise shaping.
1670 * - encoding: set by user
1671 * - decoding: unused
1673 int quantizer_noise_shaping;
1677 * is used to decide how many independant tasks should be passed to execute()
1678 * - encoding: set by user
1679 * - decoding: set by user
1684 * the codec may call this to execute several independant things. it will return only after
1685 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1686 * default implementation will execute the parts serially
1687 * @param count the number of things to execute
1688 * - encoding: set by lavc, user can override
1689 * - decoding: set by lavc, user can override
1691 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1695 * can be used by execute() to store some per AVCodecContext stuff.
1696 * - encoding: set by execute()
1697 * - decoding: set by execute()
1699 void *thread_opaque;
1702 * Motion estimation threshold. under which no motion estimation is
1703 * performed, but instead the user specified motion vectors are used
1705 * - encoding: set by user
1706 * - decoding: unused
1711 * Macroblock threshold. under which the user specified macroblock types will be used
1712 * - encoding: set by user
1713 * - decoding: unused
1718 * precision of the intra dc coefficient - 8.
1719 * - encoding: set by user
1720 * - decoding: unused
1722 int intra_dc_precision;
1725 * noise vs. sse weight for the nsse comparsion function.
1726 * - encoding: set by user
1727 * - decoding: unused
1732 * number of macroblock rows at the top which are skipped.
1733 * - encoding: unused
1734 * - decoding: set by user
1739 * number of macroblock rows at the bottom which are skipped.
1740 * - encoding: unused
1741 * - decoding: set by user
1747 * - encoding: set by user
1748 * - decoding: set by lavc
1751 #define FF_PROFILE_UNKNOWN -99
1755 * - encoding: set by user
1756 * - decoding: set by lavc
1759 #define FF_LEVEL_UNKNOWN -99
1762 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1763 * - encoding: unused
1764 * - decoding: set by user
1769 * bitsream width / height. may be different from width/height if lowres
1770 * or other things are used
1771 * - encoding: unused
1772 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1774 int coded_width, coded_height;
1777 * frame skip threshold
1778 * - encoding: set by user
1779 * - decoding: unused
1781 int frame_skip_threshold;
1785 * - encoding: set by user
1786 * - decoding: unused
1788 int frame_skip_factor;
1791 * frame skip exponent
1792 * - encoding: set by user
1793 * - decoding: unused
1798 * frame skip comparission function
1799 * - encoding: set by user.
1800 * - decoding: unused
1805 * border processing masking. raises the quantizer for mbs on the borders
1807 * - encoding: set by user
1808 * - decoding: unused
1810 float border_masking;
1813 * minimum MB lagrange multipler.
1814 * - encoding: set by user.
1815 * - decoding: unused
1820 * maximum MB lagrange multipler.
1821 * - encoding: set by user.
1822 * - decoding: unused
1828 * - encoding: set by user.
1829 * - decoding: unused
1831 int me_penalty_compensation;
1835 * - encoding: unused
1836 * - decoding: set by user.
1838 enum AVDiscard skip_loop_filter;
1842 * - encoding: unused
1843 * - decoding: set by user.
1845 enum AVDiscard skip_idct;
1849 * - encoding: unused
1850 * - decoding: set by user.
1852 enum AVDiscard skip_frame;
1858 typedef struct AVCodec {
1860 enum CodecType type;
1863 int (*init)(AVCodecContext *);
1864 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1865 int (*close)(AVCodecContext *);
1866 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1867 uint8_t *buf, int buf_size);
1869 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
1870 void *dummy; // FIXME remove next time we break binary compatibility
1872 struct AVCodec *next;
1873 void (*flush)(AVCodecContext *);
1874 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1875 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1879 * four components are given, that's all.
1880 * the last component is alpha
1882 typedef struct AVPicture {
1884 int linesize[4]; ///< number of bytes per line
1889 * This structure defines a method for communicating palette changes
1890 * between and demuxer and a decoder.
1892 #define AVPALETTE_SIZE 1024
1893 #define AVPALETTE_COUNT 256
1894 typedef struct AVPaletteControl {
1896 /* demuxer sets this to 1 to indicate the palette has changed;
1897 * decoder resets to 0 */
1898 int palette_changed;
1900 /* 4-byte ARGB palette entries, stored in native byte order; note that
1901 * the individual palette components should be on a 8-bit scale; if
1902 * the palette data comes from a IBM VGA native format, the component
1903 * data is probably 6 bits in size and needs to be scaled */
1904 unsigned int palette[AVPALETTE_COUNT];
1908 typedef struct AVSubtitleRect {
1915 uint32_t *rgba_palette;
1919 typedef struct AVSubtitle {
1920 uint16_t format; /* 0 = graphics */
1921 uint32_t start_display_time; /* relative to packet pts, in ms */
1922 uint32_t end_display_time; /* relative to packet pts, in ms */
1924 AVSubtitleRect *rects;
1927 extern AVCodec ac3_encoder;
1928 extern AVCodec mp2_encoder;
1929 extern AVCodec mp3lame_encoder;
1930 extern AVCodec oggvorbis_encoder;
1931 extern AVCodec oggtheora_encoder;
1932 extern AVCodec faac_encoder;
1933 extern AVCodec xvid_encoder;
1934 extern AVCodec mpeg1video_encoder;
1935 extern AVCodec mpeg2video_encoder;
1936 extern AVCodec h261_encoder;
1937 extern AVCodec h263_encoder;
1938 extern AVCodec h263p_encoder;
1939 extern AVCodec flv_encoder;
1940 extern AVCodec rv10_encoder;
1941 extern AVCodec rv20_encoder;
1942 extern AVCodec dvvideo_encoder;
1943 extern AVCodec mjpeg_encoder;
1944 extern AVCodec ljpeg_encoder;
1945 extern AVCodec png_encoder;
1946 extern AVCodec ppm_encoder;
1947 extern AVCodec pgm_encoder;
1948 extern AVCodec pgmyuv_encoder;
1949 extern AVCodec pbm_encoder;
1950 extern AVCodec pam_encoder;
1951 extern AVCodec mpeg4_encoder;
1952 extern AVCodec msmpeg4v1_encoder;
1953 extern AVCodec msmpeg4v2_encoder;
1954 extern AVCodec msmpeg4v3_encoder;
1955 extern AVCodec wmv1_encoder;
1956 extern AVCodec wmv2_encoder;
1957 extern AVCodec huffyuv_encoder;
1958 extern AVCodec ffvhuff_encoder;
1959 extern AVCodec h264_encoder;
1960 extern AVCodec asv1_encoder;
1961 extern AVCodec asv2_encoder;
1962 extern AVCodec vcr1_encoder;
1963 extern AVCodec ffv1_encoder;
1964 extern AVCodec snow_encoder;
1965 extern AVCodec mdec_encoder;
1966 extern AVCodec zlib_encoder;
1967 extern AVCodec sonic_encoder;
1968 extern AVCodec sonic_ls_encoder;
1969 extern AVCodec svq1_encoder;
1970 extern AVCodec x264_encoder;
1972 extern AVCodec h263_decoder;
1973 extern AVCodec h261_decoder;
1974 extern AVCodec mpeg4_decoder;
1975 extern AVCodec msmpeg4v1_decoder;
1976 extern AVCodec msmpeg4v2_decoder;
1977 extern AVCodec msmpeg4v3_decoder;
1978 extern AVCodec wmv1_decoder;
1979 extern AVCodec wmv2_decoder;
1980 extern AVCodec vc9_decoder;
1981 extern AVCodec wmv3_decoder;
1982 extern AVCodec mpeg1video_decoder;
1983 extern AVCodec mpeg2video_decoder;
1984 extern AVCodec mpegvideo_decoder;
1985 extern AVCodec mpeg_xvmc_decoder;
1986 extern AVCodec h263i_decoder;
1987 extern AVCodec flv_decoder;
1988 extern AVCodec rv10_decoder;
1989 extern AVCodec rv20_decoder;
1990 extern AVCodec rv30_decoder;
1991 extern AVCodec rv40_decoder;
1992 extern AVCodec svq1_decoder;
1993 extern AVCodec svq3_decoder;
1994 extern AVCodec dvvideo_decoder;
1995 extern AVCodec wmav1_decoder;
1996 extern AVCodec wmav2_decoder;
1997 extern AVCodec mjpeg_decoder;
1998 extern AVCodec mjpegb_decoder;
1999 extern AVCodec sp5x_decoder;
2000 extern AVCodec png_decoder;
2001 extern AVCodec mp2_decoder;
2002 extern AVCodec mp3_decoder;
2003 extern AVCodec mp3adu_decoder;
2004 extern AVCodec mp3on4_decoder;
2005 extern AVCodec qdm2_decoder;
2006 extern AVCodec mace3_decoder;
2007 extern AVCodec mace6_decoder;
2008 extern AVCodec huffyuv_decoder;
2009 extern AVCodec ffvhuff_decoder;
2010 extern AVCodec oggvorbis_decoder;
2011 extern AVCodec oggtheora_decoder;
2012 extern AVCodec cyuv_decoder;
2013 extern AVCodec h264_decoder;
2014 extern AVCodec indeo3_decoder;
2015 extern AVCodec vp3_decoder;
2016 extern AVCodec theora_decoder;
2017 extern AVCodec amr_nb_decoder;
2018 extern AVCodec amr_nb_encoder;
2019 extern AVCodec amr_wb_encoder;
2020 extern AVCodec amr_wb_decoder;
2021 extern AVCodec aac_decoder;
2022 extern AVCodec mpeg4aac_decoder;
2023 extern AVCodec asv1_decoder;
2024 extern AVCodec asv2_decoder;
2025 extern AVCodec vcr1_decoder;
2026 extern AVCodec cljr_decoder;
2027 extern AVCodec ffv1_decoder;
2028 extern AVCodec snow_decoder;
2029 extern AVCodec fourxm_decoder;
2030 extern AVCodec mdec_decoder;
2031 extern AVCodec roq_decoder;
2032 extern AVCodec interplay_video_decoder;
2033 extern AVCodec xan_wc3_decoder;
2034 extern AVCodec rpza_decoder;
2035 extern AVCodec cinepak_decoder;
2036 extern AVCodec msrle_decoder;
2037 extern AVCodec msvideo1_decoder;
2038 extern AVCodec vqa_decoder;
2039 extern AVCodec idcin_decoder;
2040 extern AVCodec eightbps_decoder;
2041 extern AVCodec smc_decoder;
2042 extern AVCodec flic_decoder;
2043 extern AVCodec vmdvideo_decoder;
2044 extern AVCodec vmdaudio_decoder;
2045 extern AVCodec truemotion1_decoder;
2046 extern AVCodec truemotion2_decoder;
2047 extern AVCodec mszh_decoder;
2048 extern AVCodec zlib_decoder;
2049 extern AVCodec ra_144_decoder;
2050 extern AVCodec ra_288_decoder;
2051 extern AVCodec roq_dpcm_decoder;
2052 extern AVCodec interplay_dpcm_decoder;
2053 extern AVCodec xan_dpcm_decoder;
2054 extern AVCodec sol_dpcm_decoder;
2055 extern AVCodec sonic_decoder;
2056 extern AVCodec qtrle_decoder;
2057 extern AVCodec flac_decoder;
2058 extern AVCodec tscc_decoder;
2059 extern AVCodec ulti_decoder;
2060 extern AVCodec qdraw_decoder;
2061 extern AVCodec xl_decoder;
2062 extern AVCodec qpeg_decoder;
2063 extern AVCodec shorten_decoder;
2064 extern AVCodec loco_decoder;
2065 extern AVCodec wnv1_decoder;
2066 extern AVCodec aasc_decoder;
2067 extern AVCodec alac_decoder;
2068 extern AVCodec ws_snd1_decoder;
2069 extern AVCodec indeo2_decoder;
2070 extern AVCodec vorbis_decoder;
2071 extern AVCodec fraps_decoder;
2072 extern AVCodec libgsm_encoder;
2073 extern AVCodec libgsm_decoder;
2076 #define PCM_CODEC(id, name) \
2077 extern AVCodec name ## _decoder; \
2078 extern AVCodec name ## _encoder
2080 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2081 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2082 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2083 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2084 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2085 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2086 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2087 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2088 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2089 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2090 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2091 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2092 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2093 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2094 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2095 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2096 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2100 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2101 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2102 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2103 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2104 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2105 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2106 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2107 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2108 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2109 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2110 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2111 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2112 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2113 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2114 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2118 /* dummy raw video codec */
2119 extern AVCodec rawvideo_encoder;
2120 extern AVCodec rawvideo_decoder;
2122 /* the following codecs use external GPL libs */
2123 extern AVCodec ac3_decoder;
2124 extern AVCodec dts_decoder;
2127 extern AVCodec dvdsub_decoder;
2128 extern AVCodec dvbsub_encoder;
2129 extern AVCodec dvbsub_decoder;
2133 struct ReSampleContext;
2134 struct AVResampleContext;
2136 typedef struct ReSampleContext ReSampleContext;
2138 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2139 int output_rate, int input_rate);
2140 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2141 void audio_resample_close(ReSampleContext *s);
2143 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2144 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2145 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2146 void av_resample_close(struct AVResampleContext *c);
2148 /* YUV420 format is assumed ! */
2150 struct ImgReSampleContext;
2152 typedef struct ImgReSampleContext ImgReSampleContext;
2154 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2155 int input_width, int input_height);
2157 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2158 int iwidth, int iheight,
2159 int topBand, int bottomBand,
2160 int leftBand, int rightBand,
2161 int padtop, int padbottom,
2162 int padleft, int padright);
2165 void img_resample(ImgReSampleContext *s,
2166 AVPicture *output, const AVPicture *input);
2168 void img_resample_close(ImgReSampleContext *s);
2171 * Allocate memory for a picture. Call avpicture_free to free it.
2173 * @param picture the picture to be filled in.
2174 * @param pix_fmt the format of the picture.
2175 * @param width the width of the picture.
2176 * @param height the height of the picture.
2177 * @return 0 if successful, -1 if not.
2179 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2181 /* Free a picture previously allocated by avpicture_alloc. */
2182 void avpicture_free(AVPicture *picture);
2184 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2185 int pix_fmt, int width, int height);
2186 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2187 unsigned char *dest, int dest_size);
2188 int avpicture_get_size(int pix_fmt, int width, int height);
2189 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2190 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2191 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2192 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2193 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2195 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2196 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2197 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2198 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2199 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2200 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2202 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2204 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2205 int has_alpha, int *loss_ptr);
2207 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2208 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2209 int img_get_alpha_info(const AVPicture *src,
2210 int pix_fmt, int width, int height);
2212 /* convert among pixel formats */
2213 int img_convert(AVPicture *dst, int dst_pix_fmt,
2214 const AVPicture *src, int pix_fmt,
2215 int width, int height);
2217 /* deinterlace a picture */
2218 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2219 int pix_fmt, int width, int height);
2221 /* external high level API */
2223 extern AVCodec *first_avcodec;
2225 /* returns LIBAVCODEC_VERSION_INT constant */
2226 unsigned avcodec_version(void);
2227 /* returns LIBAVCODEC_BUILD constant */
2228 unsigned avcodec_build(void);
2229 void avcodec_init(void);
2231 void register_avcodec(AVCodec *format);
2232 AVCodec *avcodec_find_encoder(enum CodecID id);
2233 AVCodec *avcodec_find_encoder_by_name(const char *name);
2234 AVCodec *avcodec_find_decoder(enum CodecID id);
2235 AVCodec *avcodec_find_decoder_by_name(const char *name);
2236 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2238 void avcodec_get_context_defaults(AVCodecContext *s);
2239 AVCodecContext *avcodec_alloc_context(void);
2240 void avcodec_get_frame_defaults(AVFrame *pic);
2241 AVFrame *avcodec_alloc_frame(void);
2243 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2244 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2245 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2246 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2247 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2248 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2250 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2251 void avcodec_thread_free(AVCodecContext *s);
2252 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2253 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2254 //FIXME func typedef
2257 * opens / inits the AVCodecContext.
2260 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2262 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2263 int *frame_size_ptr,
2264 uint8_t *buf, int buf_size);
2265 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2266 int *got_picture_ptr,
2267 uint8_t *buf, int buf_size);
2268 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2270 const uint8_t *buf, int buf_size);
2271 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2273 uint8_t *buf, int buf_size);
2274 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2275 const short *samples);
2276 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2277 const AVFrame *pict);
2278 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2279 const AVSubtitle *sub);
2281 int avcodec_close(AVCodecContext *avctx);
2283 void avcodec_register_all(void);
2285 void avcodec_flush_buffers(AVCodecContext *avctx);
2287 void avcodec_default_free_buffers(AVCodecContext *s);
2289 /* misc usefull functions */
2292 * returns a single letter to describe the picture type
2294 char av_get_pict_type_char(int pict_type);
2298 typedef struct AVCodecParserContext {
2300 struct AVCodecParser *parser;
2301 int64_t frame_offset; /* offset of the current frame */
2302 int64_t cur_offset; /* current offset
2303 (incremented by each av_parser_parse()) */
2304 int64_t last_frame_offset; /* offset of the last frame */
2306 int pict_type; /* XXX: put it back in AVCodecContext */
2307 int repeat_pict; /* XXX: put it back in AVCodecContext */
2308 int64_t pts; /* pts of the current frame */
2309 int64_t dts; /* dts of the current frame */
2314 int fetch_timestamp;
2316 #define AV_PARSER_PTS_NB 4
2317 int cur_frame_start_index;
2318 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2319 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2320 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2323 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2324 } AVCodecParserContext;
2326 typedef struct AVCodecParser {
2327 int codec_ids[5]; /* several codec IDs are permitted */
2329 int (*parser_init)(AVCodecParserContext *s);
2330 int (*parser_parse)(AVCodecParserContext *s,
2331 AVCodecContext *avctx,
2332 uint8_t **poutbuf, int *poutbuf_size,
2333 const uint8_t *buf, int buf_size);
2334 void (*parser_close)(AVCodecParserContext *s);
2335 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2336 struct AVCodecParser *next;
2339 extern AVCodecParser *av_first_parser;
2341 void av_register_codec_parser(AVCodecParser *parser);
2342 AVCodecParserContext *av_parser_init(int codec_id);
2343 int av_parser_parse(AVCodecParserContext *s,
2344 AVCodecContext *avctx,
2345 uint8_t **poutbuf, int *poutbuf_size,
2346 const uint8_t *buf, int buf_size,
2347 int64_t pts, int64_t dts);
2348 int av_parser_change(AVCodecParserContext *s,
2349 AVCodecContext *avctx,
2350 uint8_t **poutbuf, int *poutbuf_size,
2351 const uint8_t *buf, int buf_size, int keyframe);
2352 void av_parser_close(AVCodecParserContext *s);
2354 extern AVCodecParser mpegvideo_parser;
2355 extern AVCodecParser mpeg4video_parser;
2356 extern AVCodecParser h261_parser;
2357 extern AVCodecParser h263_parser;
2358 extern AVCodecParser h264_parser;
2359 extern AVCodecParser mjpeg_parser;
2360 extern AVCodecParser pnm_parser;
2361 extern AVCodecParser mpegaudio_parser;
2362 extern AVCodecParser ac3_parser;
2363 extern AVCodecParser dvdsub_parser;
2364 extern AVCodecParser dvbsub_parser;
2367 void *av_malloc(unsigned int size);
2368 void *av_mallocz(unsigned int size);
2369 void *av_realloc(void *ptr, unsigned int size);
2370 void av_free(void *ptr);
2371 char *av_strdup(const char *s);
2372 void av_freep(void *ptr);
2373 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2374 /* for static data only */
2375 /* call av_free_static to release all staticaly allocated tables */
2376 void av_free_static(void);
2377 void *av_mallocz_static(unsigned int size);
2378 void *av_realloc_static(void *ptr, unsigned int size);
2380 /* add by bero : in adx.c */
2381 int is_adx(const unsigned char *buf,size_t bufsize);
2383 void img_copy(AVPicture *dst, const AVPicture *src,
2384 int pix_fmt, int width, int height);
2390 #define AV_LOG_QUIET -1
2391 #define AV_LOG_ERROR 0
2392 #define AV_LOG_INFO 1
2393 #define AV_LOG_DEBUG 2
2396 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2398 extern void av_log(void*, int level, const char *fmt, ...);
2401 extern void av_vlog(void*, int level, const char *fmt, va_list);
2402 extern int av_log_get_level(void);
2403 extern void av_log_set_level(int);
2404 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2407 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2408 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2409 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2410 (((uint8_t*)(x))[1] << 16) | \
2411 (((uint8_t*)(x))[2] << 8) | \
2413 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2414 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2415 (((uint8_t*)(x))[2] << 16) | \
2416 (((uint8_t*)(x))[1] << 8) | \
2420 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2426 #endif /* AVCODEC_H */