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,
117 /* various pcm "codecs" */
118 CODEC_ID_PCM_S16LE= 0x10000,
134 CODEC_ID_PCM_S24DAUD,
136 /* various adpcm codecs */
137 CODEC_ID_ADPCM_IMA_QT= 0x11000,
138 CODEC_ID_ADPCM_IMA_WAV,
139 CODEC_ID_ADPCM_IMA_DK3,
140 CODEC_ID_ADPCM_IMA_DK4,
141 CODEC_ID_ADPCM_IMA_WS,
142 CODEC_ID_ADPCM_IMA_SMJPEG,
151 CODEC_ID_ADPCM_YAMAHA,
154 CODEC_ID_AMR_NB= 0x12000,
157 /* RealAudio codecs*/
158 CODEC_ID_RA_144= 0x13000,
161 /* various DPCM codecs */
162 CODEC_ID_ROQ_DPCM= 0x14000,
163 CODEC_ID_INTERPLAY_DPCM,
167 CODEC_ID_MP2= 0x15000,
168 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
187 CODEC_ID_WESTWOOD_SND1,
191 CODEC_ID_OGGTHEORA= 0x16000,
193 /* subtitle codecs */
194 CODEC_ID_DVD_SUBTITLE= 0x17000,
195 CODEC_ID_DVB_SUBTITLE,
197 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
198 stream (only used by libavformat) */
201 /* CODEC_ID_MP3LAME is absolete */
202 #define CODEC_ID_MP3LAME CODEC_ID_MP3
205 CODEC_TYPE_UNKNOWN = -1,
213 * Pixel format. Notes:
215 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
216 * color is put together as:
217 * (A << 24) | (R << 16) | (G << 8) | B
218 * This is stored as BGRA on little endian CPU architectures and ARGB on
221 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
222 * image data is stored in AVFrame.data[0]. The palette is transported in
223 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
224 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
225 * also endian-specific). Note also that the individual RGB palette
226 * components stored in AVFrame.data[1] should be in the range 0..255.
227 * This is important as many custom PAL8 video codecs that were designed
228 * to run on the IBM VGA graphics adapter use 6-bit palette components.
232 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
233 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
234 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
235 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
236 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
237 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
238 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
239 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
240 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
241 PIX_FMT_RGB565, ///< always stored in cpu endianness
242 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
244 PIX_FMT_MONOWHITE, ///< 0 is white
245 PIX_FMT_MONOBLACK, ///< 0 is black
246 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
247 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
248 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
249 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
250 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
251 PIX_FMT_XVMC_MPEG2_IDCT,
252 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
253 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
257 /* currently unused, may be used if 24/32 bits samples ever supported */
259 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
260 SAMPLE_FMT_S32, ///< signed 32 bits
261 SAMPLE_FMT_FLT, ///< float
262 SAMPLE_FMT_DBL, ///< double
266 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
269 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
270 * this is mainly needed because some optimized bitstream readers read
271 * 32 or 64 bit at once and could read over the end<br>
272 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
273 * MPEG bitstreams could cause overread and segfault
275 #define FF_INPUT_BUFFER_PADDING_SIZE 8
278 * minimum encoding buffer size.
279 * used to avoid some checks during header writing
281 #define FF_MIN_BUFFER_SIZE 16384
283 /* motion estimation type, EPZS by default */
294 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
295 AVDISCARD_NONE =-16, ///< discard nothing
296 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
297 AVDISCARD_NONREF = 8, ///< discard all non reference
298 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
299 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
300 AVDISCARD_ALL = 48, ///< discard all
303 typedef struct RcOverride{
306 int qscale; // if this is 0 then quality_factor will be used instead
307 float quality_factor;
310 /* only for ME compatiblity with old apps */
311 extern int motion_estimation_method;
313 #define FF_MAX_B_FRAMES 8
316 these flags can be passed in AVCodecContext.flags before initing
317 Note: not everything is supported yet.
320 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
321 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
322 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
323 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
324 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
325 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
326 /* parent program gurantees that the input for b-frame containing streams is not written to
327 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
328 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
329 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
330 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
331 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
332 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
333 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
334 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
335 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
336 of only at frame boundaries */
337 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
338 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
339 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
340 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
341 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
342 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
343 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
344 /* Fx : Flag for h263+ extra options */
345 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
346 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
347 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
348 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
349 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
350 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
351 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
352 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
353 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
354 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
355 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
356 #define CODEC_FLAG_CLOSED_GOP 0x80000000
357 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
358 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
359 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
360 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
362 /* Unsupported options :
363 * Syntax Arithmetic coding (SAC)
364 * Reference Picture Selection
365 * Independant Segment Decoding */
367 /* codec capabilities */
369 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
371 * Codec uses get_buffer() for allocating buffers.
372 * direct rendering method 1
374 #define CODEC_CAP_DR1 0x0002
375 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
377 #define CODEC_CAP_PARSE_ONLY 0x0004
378 #define CODEC_CAP_TRUNCATED 0x0008
379 /* codec can export data for HW decoding (XvMC) */
380 #define CODEC_CAP_HWACCEL 0x0010
382 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
383 * if this is not set, the codec is guranteed to never be feeded with NULL data
385 #define CODEC_CAP_DELAY 0x0020
387 //the following defines may change, don't expect compatibility if you use them
388 #define MB_TYPE_INTRA4x4 0x0001
389 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
390 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
391 #define MB_TYPE_16x16 0x0008
392 #define MB_TYPE_16x8 0x0010
393 #define MB_TYPE_8x16 0x0020
394 #define MB_TYPE_8x8 0x0040
395 #define MB_TYPE_INTERLACED 0x0080
396 #define MB_TYPE_DIRECT2 0x0100 //FIXME
397 #define MB_TYPE_ACPRED 0x0200
398 #define MB_TYPE_GMC 0x0400
399 #define MB_TYPE_SKIP 0x0800
400 #define MB_TYPE_P0L0 0x1000
401 #define MB_TYPE_P1L0 0x2000
402 #define MB_TYPE_P0L1 0x4000
403 #define MB_TYPE_P1L1 0x8000
404 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
405 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
406 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
407 #define MB_TYPE_QUANT 0x00010000
408 #define MB_TYPE_CBP 0x00020000
409 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
413 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
415 typedef struct AVPanScan{
418 * - encoding: set by user.
419 * - decoding: set by lavc
424 * width and height in 1/16 pel
425 * - encoding: set by user.
426 * - decoding: set by lavc
432 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
433 * - encoding: set by user.
434 * - decoding: set by lavc
436 int16_t position[3][2];
439 #define FF_COMMON_FRAME \
441 * pointer to the picture planes.\
442 * this might be different from the first allocated byte\
449 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
450 * this isn't used by lavc unless the default get/release_buffer() is used\
456 * 1 -> keyframe, 0-> not\
457 * - encoding: set by lavc\
458 * - decoding: set by lavc\
463 * picture type of the frame, see ?_TYPE below.\
464 * - encoding: set by lavc for coded_picture (and set by user for input)\
465 * - decoding: set by lavc\
470 * presentation timestamp in time_base units (time when frame should be shown to user)\
471 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
472 * - encoding: MUST be set by user\
473 * - decoding: set by lavc\
478 * picture number in bitstream order.\
479 * - encoding: set by\
480 * - decoding: set by lavc\
482 int coded_picture_number;\
484 * picture number in display order.\
485 * - encoding: set by\
486 * - decoding: set by lavc\
488 int display_picture_number;\
491 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
492 * - encoding: set by lavc for coded_picture (and set by user for input)\
493 * - decoding: set by lavc\
498 * buffer age (1->was last buffer and dint change, 2->..., ...).\
499 * set to INT_MAX if the buffer has not been used yet \
500 * - encoding: unused\
501 * - decoding: MUST be set by get_buffer()\
506 * is this picture used as reference\
507 * - encoding: unused\
508 * - decoding: set by lavc (before get_buffer() call))\
514 * - encoding: unused\
515 * - decoding: set by lavc\
517 int8_t *qscale_table;\
520 * - encoding: unused\
521 * - decoding: set by lavc\
526 * mbskip_table[mb]>=1 if MB didnt change\
527 * stride= mb_width = (width+15)>>4\
528 * - encoding: unused\
529 * - decoding: set by lavc\
531 uint8_t *mbskip_table;\
534 * Motion vector table.\
537 * int mv_sample_log2= 4 - motion_subsample_log2;\
538 * int mb_width= (width+15)>>4;\
539 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
540 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
542 * - encoding: set by user\
543 * - decoding: set by lavc\
545 int16_t (*motion_val[2])[2];\
548 * Macroblock type table\
549 * mb_type_base + mb_width + 2\
550 * - encoding: set by user\
551 * - decoding: set by lavc\
556 * log2 of the size of the block which a single vector in motion_val represents: \
557 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
558 * - encoding: unused\
559 * - decoding: set by lavc\
561 uint8_t motion_subsample_log2;\
564 * for some private data of the user\
565 * - encoding: unused\
566 * - decoding: set by user\
572 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
573 * - decoding: unused\
578 * type of the buffer (to keep track of who has to dealloc data[*])\
579 * - encoding: set by the one who allocs it\
580 * - decoding: set by the one who allocs it\
581 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
586 * when decoding, this signal how much the picture must be delayed.\
587 * extra_delay = repeat_pict / (2*fps)\
588 * - encoding: unused\
589 * - decoding: set by lavc\
599 * The content of the picture is interlaced.\
600 * - encoding: set by user\
601 * - decoding: set by lavc (default 0)\
603 int interlaced_frame;\
606 * if the content is interlaced, is top field displayed first.\
607 * - encoding: set by user\
608 * - decoding: set by lavc\
610 int top_field_first;\
614 * - encoding: set by user\
615 * - decoding: set by lavc\
617 AVPanScan *pan_scan;\
620 * tell user application that palette has changed from previous frame.\
621 * - encoding: ??? (no palette-enabled encoder yet)\
622 * - decoding: set by lavc (default 0)\
624 int palette_has_changed;\
627 * Codec suggestion on buffer type if != 0\
628 * - encoding: unused\
629 * - decoding: set by lavc (before get_buffer() call))\
635 * - encoding: unused\
636 * - decoding: set by lavc\
641 * Motion referece frame index\
642 * - encoding: set by user\
643 * - decoding: set by lavc\
645 int8_t *ref_index[2];
647 #define FF_QSCALE_TYPE_MPEG1 0
648 #define FF_QSCALE_TYPE_MPEG2 1
650 #define FF_BUFFER_TYPE_INTERNAL 1
651 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
652 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
653 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
656 #define FF_I_TYPE 1 // Intra
657 #define FF_P_TYPE 2 // Predicted
658 #define FF_B_TYPE 3 // Bi-dir predicted
659 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
663 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
664 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
665 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
666 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
671 typedef struct AVFrame {
675 #define DEFAULT_FRAME_RATE_BASE 1001000
680 typedef struct AVCLASS AVClass;
682 const char* class_name;
683 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
684 or AVFormatContext, which begin with an AVClass.
685 Needed because av_log is in libavcodec and has no visibility
686 of AVIn/OutputFormat */
687 struct AVOption *option;
691 * main external api structure.
693 typedef struct AVCodecContext {
695 * Info on struct for av_log
696 * - set by avcodec_alloc_context
700 * the average bitrate.
701 * - encoding: set by user. unused for constant quantizer encoding
702 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
707 * number of bits the bitstream is allowed to diverge from the reference.
708 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
709 * - encoding: set by user. unused for constant quantizer encoding
712 int bit_rate_tolerance;
716 * - encoding: set by user.
717 * - decoding: set by user.
722 * some codecs needs additionnal format info. It is stored here
723 * - encoding: set by user.
724 * - decoding: set by lavc. (FIXME is this ok?)
729 * motion estimation algorithm used for video coding.
730 * - encoding: MUST be set by user.
736 * some codecs need / can use extra-data like huffman tables.
737 * mjpeg: huffman tables
738 * rv10: additional flags
739 * mpeg4: global headers (they can be in the bitstream or here)
740 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
741 * then extradata_size to avoid prolems if its read with the bitstream reader
742 * the bytewise contents of extradata must not depend on the architecture or cpu endianness
743 * - encoding: set/allocated/freed by lavc.
744 * - decoding: set/allocated/freed by user.
750 * this is the fundamental unit of time (in seconds) in terms
751 * of which frame timestamps are represented. for fixed-fps content,
752 * timebase should be 1/framerate and timestamp increments should be
754 * - encoding: MUST be set by user
755 * - decoding: set by lavc.
757 AVRational time_base;
761 * picture width / height.
762 * - encoding: MUST be set by user.
763 * - decoding: set by lavc.
764 * Note, for compatibility its possible to set this instead of
765 * coded_width/height before decoding
769 #define FF_ASPECT_EXTENDED 15
772 * the number of pictures in a group of pitures, or 0 for intra_only.
773 * - encoding: set by user.
779 * pixel format, see PIX_FMT_xxx.
780 * - encoding: set by user.
781 * - decoding: set by lavc.
783 enum PixelFormat pix_fmt;
786 * Frame rate emulation. If not zero lower layer (i.e. format handler)
787 * has to read frames at native frame rate.
788 * - encoding: set by user.
789 * - decoding: unused.
794 * if non NULL, 'draw_horiz_band' is called by the libavcodec
795 * decoder to draw an horizontal band. It improve cache usage. Not
796 * all codecs can do that. You must check the codec capabilities
799 * - decoding: set by user.
800 * @param height the height of the slice
801 * @param y the y position of the slice
802 * @param type 1->top field, 2->bottom field, 3->frame
803 * @param offset offset into the AVFrame.data from which the slice should be read
805 void (*draw_horiz_band)(struct AVCodecContext *s,
806 const AVFrame *src, int offset[4],
807 int y, int type, int height);
810 int sample_rate; ///< samples per sec
814 * audio sample format.
815 * - encoding: set by user.
816 * - decoding: set by lavc.
818 enum SampleFormat sample_fmt; ///< sample format, currenly unused
820 /* the following data should not be initialized */
822 * samples per packet. initialized when calling 'init'
825 int frame_number; ///< audio or video frame number
826 int real_pict_num; ///< returns the real picture number of previous encoded frame
829 * number of frames the decoded output will be delayed relative to
831 * - encoding: set by lavc.
836 /* - encoding parameters */
837 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
838 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
842 * - encoding: set by user.
849 * - encoding: set by user.
855 * maximum quantizer difference etween frames.
856 * - encoding: set by user.
862 * maximum number of b frames between non b frames.
863 * note: the output will be delayed by max_b_frames+1 relative to the input
864 * - encoding: set by user.
870 * qscale factor between ip and b frames.
871 * - encoding: set by user.
874 float b_quant_factor;
876 /** obsolete FIXME remove */
878 int b_frame_strategy;
882 * deprecated in favor of skip_idct and skip_frame
884 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
888 struct AVCodec *codec;
892 /* unused, FIXME remove*/
895 int rtp_payload_size; /* The size of the RTP payload: the coder will */
896 /* do it's best to deliver a chunk with size */
897 /* below rtp_payload_size, the chunk will start */
898 /* with a start code on some codecs like H.263 */
899 /* This doesn't take account of any particular */
900 /* headers inside the transmited RTP payload */
903 /* The RTP callback: This function is called */
904 /* every time the encoder has a packet to send */
905 /* Depends on the encoder if the data starts */
906 /* with a Start Code (it should) H.263 does. */
907 /* mb_nb contains the number of macroblocks */
908 /* encoded in the RTP payload */
909 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
911 /* statistics, used for 2-pass encoding */
922 * number of bits used for the previously encoded frame.
923 * - encoding: set by lavc
929 * private data of the user, can be used to carry app specific stuff.
930 * - encoding: set by user
931 * - decoding: set by user
936 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
937 enum CodecID codec_id; /* see CODEC_ID_xxx */
940 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
941 * this is used to workaround some encoder bugs
942 * - encoding: set by user, if not then the default based on codec_id will be used
943 * - decoding: set by user, will be converted to upper case by lavc during init
945 unsigned int codec_tag;
948 * workaround bugs in encoders which sometimes cannot be detected automatically.
949 * - encoding: set by user
950 * - decoding: set by user
953 #define FF_BUG_AUTODETECT 1 ///< autodetection
954 #define FF_BUG_OLD_MSMPEG4 2
955 #define FF_BUG_XVID_ILACE 4
956 #define FF_BUG_UMP4 8
957 #define FF_BUG_NO_PADDING 16
958 #define FF_BUG_AMV 32
959 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
960 #define FF_BUG_QPEL_CHROMA 64
961 #define FF_BUG_STD_QPEL 128
962 #define FF_BUG_QPEL_CHROMA2 256
963 #define FF_BUG_DIRECT_BLOCKSIZE 512
964 #define FF_BUG_EDGE 1024
965 #define FF_BUG_HPEL_CHROMA 2048
966 #define FF_BUG_DC_CLIP 4096
967 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
968 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
971 * luma single coeff elimination threshold.
972 * - encoding: set by user
975 int luma_elim_threshold;
978 * chroma single coeff elimination threshold.
979 * - encoding: set by user
982 int chroma_elim_threshold;
985 * strictly follow the std (MPEG4, ...).
986 * - encoding: set by user
989 int strict_std_compliance;
990 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
991 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
992 #define FF_COMPLIANCE_NORMAL 0
993 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
994 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
997 * qscale offset between ip and b frames.
998 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
999 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1000 * - encoding: set by user.
1001 * - decoding: unused
1003 float b_quant_offset;
1006 * error resilience higher values will detect more errors but may missdetect
1007 * some more or less valid parts as errors.
1008 * - encoding: unused
1009 * - decoding: set by user
1011 int error_resilience;
1012 #define FF_ER_CAREFUL 1
1013 #define FF_ER_COMPLIANT 2
1014 #define FF_ER_AGGRESSIVE 3
1015 #define FF_ER_VERY_AGGRESSIVE 4
1018 * called at the beginning of each frame to get a buffer for it.
1019 * if pic.reference is set then the frame will be read later by lavc
1020 * avcodec_align_dimensions() should be used to find the required width and
1021 * height, as they normally need to be rounded up to the next multiple of 16
1022 * - encoding: unused
1023 * - decoding: set by lavc, user can override
1025 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1028 * called to release buffers which where allocated with get_buffer.
1029 * a released buffer can be reused in get_buffer()
1030 * pic.data[*] must be set to NULL
1031 * - encoding: unused
1032 * - decoding: set by lavc, user can override
1034 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1037 * if 1 the stream has a 1 frame delay during decoding.
1038 * - encoding: set by lavc
1039 * - decoding: set by lavc
1044 * number of bytes per packet if constant and known or 0
1045 * used by some WAV based audio codecs
1049 int parse_only; /* - decoding only: if true, only parsing is done
1050 (function avcodec_parse_frame()). The frame
1051 data is returned. Only MPEG codecs support this now. */
1054 * 0-> h263 quant 1-> mpeg quant.
1055 * - encoding: set by user.
1056 * - decoding: unused
1061 * pass1 encoding statistics output buffer.
1062 * - encoding: set by lavc
1063 * - decoding: unused
1068 * pass2 encoding statistics input buffer.
1069 * concatenated stuff from stats_out of pass1 should be placed here
1070 * - encoding: allocated/set/freed by user
1071 * - decoding: unused
1076 * ratecontrol qmin qmax limiting method.
1077 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1078 * - encoding: set by user.
1079 * - decoding: unused
1087 * ratecontrol override, see RcOverride.
1088 * - encoding: allocated/set/freed by user.
1089 * - decoding: unused
1091 RcOverride *rc_override;
1092 int rc_override_count;
1095 * rate control equation.
1096 * - encoding: set by user
1097 * - decoding: unused
1103 * - encoding: set by user.
1104 * - decoding: unused
1110 * - encoding: set by user.
1111 * - decoding: unused
1116 * decoder bitstream buffer size.
1117 * - encoding: set by user.
1118 * - decoding: unused
1121 float rc_buffer_aggressivity;
1124 * qscale factor between p and i frames.
1125 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1126 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1127 * - encoding: set by user.
1128 * - decoding: unused
1130 float i_quant_factor;
1133 * qscale offset between p and i frames.
1134 * - encoding: set by user.
1135 * - decoding: unused
1137 float i_quant_offset;
1140 * initial complexity for pass1 ratecontrol.
1141 * - encoding: set by user.
1142 * - decoding: unused
1144 float rc_initial_cplx;
1147 * dct algorithm, see FF_DCT_* below.
1148 * - encoding: set by user
1149 * - decoding: unused
1152 #define FF_DCT_AUTO 0
1153 #define FF_DCT_FASTINT 1
1154 #define FF_DCT_INT 2
1155 #define FF_DCT_MMX 3
1156 #define FF_DCT_MLIB 4
1157 #define FF_DCT_ALTIVEC 5
1158 #define FF_DCT_FAAN 6
1161 * luminance masking (0-> disabled).
1162 * - encoding: set by user
1163 * - decoding: unused
1168 * temporary complexity masking (0-> disabled).
1169 * - encoding: set by user
1170 * - decoding: unused
1172 float temporal_cplx_masking;
1175 * spatial complexity masking (0-> disabled).
1176 * - encoding: set by user
1177 * - decoding: unused
1179 float spatial_cplx_masking;
1182 * p block masking (0-> disabled).
1183 * - encoding: set by user
1184 * - decoding: unused
1189 * darkness masking (0-> disabled).
1190 * - encoding: set by user
1191 * - decoding: unused
1196 /* for binary compatibility */
1200 * idct algorithm, see FF_IDCT_* below.
1201 * - encoding: set by user
1202 * - decoding: set by user
1205 #define FF_IDCT_AUTO 0
1206 #define FF_IDCT_INT 1
1207 #define FF_IDCT_SIMPLE 2
1208 #define FF_IDCT_SIMPLEMMX 3
1209 #define FF_IDCT_LIBMPEG2MMX 4
1210 #define FF_IDCT_PS2 5
1211 #define FF_IDCT_MLIB 6
1212 #define FF_IDCT_ARM 7
1213 #define FF_IDCT_ALTIVEC 8
1214 #define FF_IDCT_SH4 9
1215 #define FF_IDCT_SIMPLEARM 10
1216 #define FF_IDCT_H264 11
1217 #define FF_IDCT_VP3 12
1218 #define FF_IDCT_IPP 13
1219 #define FF_IDCT_XVIDMMX 14
1223 * - encoding: set by lavc
1224 * - decoding: set by user (or 0)
1228 * slice offsets in the frame in bytes.
1229 * - encoding: set/allocated by lavc
1230 * - decoding: set/allocated by user (or NULL)
1235 * error concealment flags.
1236 * - encoding: unused
1237 * - decoding: set by user
1239 int error_concealment;
1240 #define FF_EC_GUESS_MVS 1
1241 #define FF_EC_DEBLOCK 2
1244 * dsp_mask could be add used to disable unwanted CPU features
1245 * CPU features (i.e. MMX, SSE. ...)
1247 * with FORCE flag you may instead enable given CPU features
1248 * (Dangerous: usable in case of misdetection, improper usage however will
1249 * result into program crash)
1252 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1253 /* lower 16 bits - CPU features */
1255 #define FF_MM_MMX 0x0001 /* standard MMX */
1256 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1257 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1258 #define FF_MM_SSE 0x0008 /* SSE functions */
1259 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1260 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1261 #endif /* HAVE_MMX */
1263 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1264 #endif /* HAVE_IWMMXT */
1267 * bits per sample/pixel from the demuxer (needed for huffyuv).
1268 * - encoding: set by lavc
1269 * - decoding: set by user
1271 int bits_per_sample;
1274 * prediction method (needed for huffyuv).
1275 * - encoding: set by user
1276 * - decoding: unused
1278 int prediction_method;
1279 #define FF_PRED_LEFT 0
1280 #define FF_PRED_PLANE 1
1281 #define FF_PRED_MEDIAN 2
1284 * sample aspect ratio (0 if unknown).
1285 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1286 * - encoding: set by user.
1287 * - decoding: set by lavc.
1289 AVRational sample_aspect_ratio;
1292 * the picture in the bitstream.
1293 * - encoding: set by lavc
1294 * - decoding: set by lavc
1296 AVFrame *coded_frame;
1300 * - encoding: set by user.
1301 * - decoding: set by user.
1304 #define FF_DEBUG_PICT_INFO 1
1305 #define FF_DEBUG_RC 2
1306 #define FF_DEBUG_BITSTREAM 4
1307 #define FF_DEBUG_MB_TYPE 8
1308 #define FF_DEBUG_QP 16
1309 #define FF_DEBUG_MV 32
1310 #define FF_DEBUG_DCT_COEFF 0x00000040
1311 #define FF_DEBUG_SKIP 0x00000080
1312 #define FF_DEBUG_STARTCODE 0x00000100
1313 #define FF_DEBUG_PTS 0x00000200
1314 #define FF_DEBUG_ER 0x00000400
1315 #define FF_DEBUG_MMCO 0x00000800
1316 #define FF_DEBUG_BUGS 0x00001000
1317 #define FF_DEBUG_VIS_QP 0x00002000
1318 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1322 * - encoding: set by user.
1323 * - decoding: set by user.
1326 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1327 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1328 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1332 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1333 * - decoding: unused
1338 * minimum MB quantizer.
1339 * - encoding: unused
1340 * - decoding: unused
1345 * maximum MB quantizer.
1346 * - encoding: unused
1347 * - decoding: unused
1352 * motion estimation compare function.
1353 * - encoding: set by user.
1354 * - decoding: unused
1358 * subpixel motion estimation compare function.
1359 * - encoding: set by user.
1360 * - decoding: unused
1364 * macroblock compare function (not supported yet).
1365 * - encoding: set by user.
1366 * - decoding: unused
1370 * interlaced dct compare function
1371 * - encoding: set by user.
1372 * - decoding: unused
1375 #define FF_CMP_SAD 0
1376 #define FF_CMP_SSE 1
1377 #define FF_CMP_SATD 2
1378 #define FF_CMP_DCT 3
1379 #define FF_CMP_PSNR 4
1380 #define FF_CMP_BIT 5
1382 #define FF_CMP_ZERO 7
1383 #define FF_CMP_VSAD 8
1384 #define FF_CMP_VSSE 9
1385 #define FF_CMP_NSSE 10
1386 #define FF_CMP_W53 11
1387 #define FF_CMP_W97 12
1388 #define FF_CMP_DCTMAX 13
1389 #define FF_CMP_CHROMA 256
1392 * ME diamond size & shape.
1393 * - encoding: set by user.
1394 * - decoding: unused
1399 * amount of previous MV predictors (2a+1 x 2a+1 square).
1400 * - encoding: set by user.
1401 * - decoding: unused
1403 int last_predictor_count;
1406 * pre pass for motion estimation.
1407 * - encoding: set by user.
1408 * - decoding: unused
1413 * motion estimation pre pass compare function.
1414 * - encoding: set by user.
1415 * - decoding: unused
1420 * ME pre pass diamond size & shape.
1421 * - encoding: set by user.
1422 * - decoding: unused
1427 * subpel ME quality.
1428 * - encoding: set by user.
1429 * - decoding: unused
1431 int me_subpel_quality;
1434 * callback to negotiate the pixelFormat.
1435 * @param fmt is the list of formats which are supported by the codec,
1436 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1437 * the first is allways the native one
1438 * @return the choosen format
1439 * - encoding: unused
1440 * - decoding: set by user, if not set then the native format will always be choosen
1442 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1445 * DTG active format information (additionnal aspect ratio
1446 * information only used in DVB MPEG2 transport streams). 0 if
1449 * - encoding: unused.
1450 * - decoding: set by decoder
1452 int dtg_active_format;
1453 #define FF_DTG_AFD_SAME 8
1454 #define FF_DTG_AFD_4_3 9
1455 #define FF_DTG_AFD_16_9 10
1456 #define FF_DTG_AFD_14_9 11
1457 #define FF_DTG_AFD_4_3_SP_14_9 13
1458 #define FF_DTG_AFD_16_9_SP_14_9 14
1459 #define FF_DTG_AFD_SP_4_3 15
1462 * Maximum motion estimation search range in subpel units.
1463 * if 0 then no limit
1465 * - encoding: set by user.
1466 * - decoding: unused.
1471 * intra quantizer bias.
1472 * - encoding: set by user.
1473 * - decoding: unused
1475 int intra_quant_bias;
1476 #define FF_DEFAULT_QUANT_BIAS 999999
1479 * inter quantizer bias.
1480 * - encoding: set by user.
1481 * - decoding: unused
1483 int inter_quant_bias;
1487 * - encoding: unused.
1488 * - decoding: which clrtable should be used for 8bit RGB images
1489 * table have to be stored somewhere FIXME
1494 * internal_buffer count.
1495 * Don't touch, used by lavc default_get_buffer()
1497 int internal_buffer_count;
1501 * Don't touch, used by lavc default_get_buffer()
1503 void *internal_buffer;
1505 #define FF_LAMBDA_SHIFT 7
1506 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1507 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1508 #define FF_LAMBDA_MAX (256*128-1)
1510 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1512 * global quality for codecs which cannot change it per frame.
1513 * this should be proportional to MPEG1/2/4 qscale.
1514 * - encoding: set by user.
1515 * - decoding: unused
1519 #define FF_CODER_TYPE_VLC 0
1520 #define FF_CODER_TYPE_AC 1
1523 * - encoding: set by user.
1524 * - decoding: unused
1530 * - encoding: set by user.
1531 * - decoding: unused
1537 * - encoding: unused
1538 * - decoding: set by user.
1541 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1542 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1543 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1546 * XVideo Motion Acceleration
1547 * - encoding: forbidden
1548 * - decoding: set by decoder
1550 int xvmc_acceleration;
1553 * macroblock decision mode
1554 * - encoding: set by user.
1555 * - decoding: unused
1558 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1559 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1560 #define FF_MB_DECISION_RD 2 ///< rate distoration
1563 * custom intra quantization matrix
1564 * - encoding: set by user, can be NULL
1565 * - decoding: set by lavc
1567 uint16_t *intra_matrix;
1570 * custom inter quantization matrix
1571 * - encoding: set by user, can be NULL
1572 * - decoding: set by lavc
1574 uint16_t *inter_matrix;
1577 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1578 * this is used to workaround some encoder bugs
1579 * - encoding: unused
1580 * - decoding: set by user, will be converted to upper case by lavc during init
1582 unsigned int stream_codec_tag;
1585 * scene change detection threshold.
1586 * 0 is default, larger means fewer detected scene changes
1587 * - encoding: set by user.
1588 * - decoding: unused
1590 int scenechange_threshold;
1593 * minimum lagrange multipler
1594 * - encoding: set by user.
1595 * - decoding: unused
1600 * maximum lagrange multipler
1601 * - encoding: set by user.
1602 * - decoding: unused
1607 * Palette control structure
1608 * - encoding: ??? (no palette-enabled encoder yet)
1609 * - decoding: set by user.
1611 struct AVPaletteControl *palctrl;
1614 * noise reduction strength
1615 * - encoding: set by user.
1616 * - decoding: unused
1618 int noise_reduction;
1621 * called at the beginning of a frame to get cr buffer for it.
1622 * buffer type (size, hints) must be the same. lavc won't check it.
1623 * lavc will pass previous buffer in pic, function should return
1624 * same buffer or new buffer with old frame "painted" into it.
1625 * if pic.data[0] == NULL must behave like get_buffer().
1626 * - encoding: unused
1627 * - decoding: set by lavc, user can override
1629 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1632 * number of bits which should be loaded into the rc buffer before decoding starts
1633 * - encoding: set by user.
1634 * - decoding: unused
1636 int rc_initial_buffer_occupancy;
1640 * - encoding: set by user.
1641 * - decoding: unused
1643 int inter_threshold;
1647 * - encoding: set by user.
1648 * - decoding: set by user.
1653 * simulates errors in the bitstream to test error concealment.
1654 * - encoding: set by user.
1655 * - decoding: unused.
1660 * MP3 antialias algorithm, see FF_AA_* below.
1661 * - encoding: unused
1662 * - decoding: set by user
1665 #define FF_AA_AUTO 0
1666 #define FF_AA_FASTINT 1 //not implemented yet
1668 #define FF_AA_FLOAT 3
1670 * Quantizer noise shaping.
1671 * - encoding: set by user
1672 * - decoding: unused
1674 int quantizer_noise_shaping;
1678 * is used to decide how many independant tasks should be passed to execute()
1679 * - encoding: set by user
1680 * - decoding: set by user
1685 * the codec may call this to execute several independant things. it will return only after
1686 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1687 * default implementation will execute the parts serially
1688 * @param count the number of things to execute
1689 * - encoding: set by lavc, user can override
1690 * - decoding: set by lavc, user can override
1692 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1696 * can be used by execute() to store some per AVCodecContext stuff.
1697 * - encoding: set by execute()
1698 * - decoding: set by execute()
1700 void *thread_opaque;
1703 * Motion estimation threshold. under which no motion estimation is
1704 * performed, but instead the user specified motion vectors are used
1706 * - encoding: set by user
1707 * - decoding: unused
1712 * Macroblock threshold. under which the user specified macroblock types will be used
1713 * - encoding: set by user
1714 * - decoding: unused
1719 * precision of the intra dc coefficient - 8.
1720 * - encoding: set by user
1721 * - decoding: unused
1723 int intra_dc_precision;
1726 * noise vs. sse weight for the nsse comparsion function.
1727 * - encoding: set by user
1728 * - decoding: unused
1733 * number of macroblock rows at the top which are skipped.
1734 * - encoding: unused
1735 * - decoding: set by user
1740 * number of macroblock rows at the bottom which are skipped.
1741 * - encoding: unused
1742 * - decoding: set by user
1748 * - encoding: set by user
1749 * - decoding: set by lavc
1752 #define FF_PROFILE_UNKNOWN -99
1756 * - encoding: set by user
1757 * - decoding: set by lavc
1760 #define FF_LEVEL_UNKNOWN -99
1763 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1764 * - encoding: unused
1765 * - decoding: set by user
1770 * bitsream width / height. may be different from width/height if lowres
1771 * or other things are used
1772 * - encoding: unused
1773 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1775 int coded_width, coded_height;
1778 * frame skip threshold
1779 * - encoding: set by user
1780 * - decoding: unused
1782 int frame_skip_threshold;
1786 * - encoding: set by user
1787 * - decoding: unused
1789 int frame_skip_factor;
1792 * frame skip exponent
1793 * - encoding: set by user
1794 * - decoding: unused
1799 * frame skip comparission function
1800 * - encoding: set by user.
1801 * - decoding: unused
1806 * border processing masking. raises the quantizer for mbs on the borders
1808 * - encoding: set by user
1809 * - decoding: unused
1811 float border_masking;
1814 * minimum MB lagrange multipler.
1815 * - encoding: set by user.
1816 * - decoding: unused
1821 * maximum MB lagrange multipler.
1822 * - encoding: set by user.
1823 * - decoding: unused
1829 * - encoding: set by user.
1830 * - decoding: unused
1832 int me_penalty_compensation;
1836 * - encoding: unused
1837 * - decoding: set by user.
1839 enum AVDiscard skip_loop_filter;
1843 * - encoding: unused
1844 * - decoding: set by user.
1846 enum AVDiscard skip_idct;
1850 * - encoding: unused
1851 * - decoding: set by user.
1853 enum AVDiscard skip_frame;
1859 typedef struct AVCodec {
1861 enum CodecType type;
1864 int (*init)(AVCodecContext *);
1865 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1866 int (*close)(AVCodecContext *);
1867 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1868 uint8_t *buf, int buf_size);
1870 #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
1871 void *dummy; // FIXME remove next time we break binary compatibility
1873 struct AVCodec *next;
1874 void (*flush)(AVCodecContext *);
1875 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1876 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1880 * four components are given, that's all.
1881 * the last component is alpha
1883 typedef struct AVPicture {
1885 int linesize[4]; ///< number of bytes per line
1890 * This structure defines a method for communicating palette changes
1891 * between and demuxer and a decoder.
1893 #define AVPALETTE_SIZE 1024
1894 #define AVPALETTE_COUNT 256
1895 typedef struct AVPaletteControl {
1897 /* demuxer sets this to 1 to indicate the palette has changed;
1898 * decoder resets to 0 */
1899 int palette_changed;
1901 /* 4-byte ARGB palette entries, stored in native byte order; note that
1902 * the individual palette components should be on a 8-bit scale; if
1903 * the palette data comes from a IBM VGA native format, the component
1904 * data is probably 6 bits in size and needs to be scaled */
1905 unsigned int palette[AVPALETTE_COUNT];
1909 typedef struct AVSubtitleRect {
1916 uint32_t *rgba_palette;
1920 typedef struct AVSubtitle {
1921 uint16_t format; /* 0 = graphics */
1922 uint32_t start_display_time; /* relative to packet pts, in ms */
1923 uint32_t end_display_time; /* relative to packet pts, in ms */
1925 AVSubtitleRect *rects;
1928 extern AVCodec ac3_encoder;
1929 extern AVCodec mp2_encoder;
1930 extern AVCodec mp3lame_encoder;
1931 extern AVCodec oggvorbis_encoder;
1932 extern AVCodec oggtheora_encoder;
1933 extern AVCodec faac_encoder;
1934 extern AVCodec xvid_encoder;
1935 extern AVCodec mpeg1video_encoder;
1936 extern AVCodec mpeg2video_encoder;
1937 extern AVCodec h261_encoder;
1938 extern AVCodec h263_encoder;
1939 extern AVCodec h263p_encoder;
1940 extern AVCodec flv_encoder;
1941 extern AVCodec rv10_encoder;
1942 extern AVCodec rv20_encoder;
1943 extern AVCodec dvvideo_encoder;
1944 extern AVCodec mjpeg_encoder;
1945 extern AVCodec ljpeg_encoder;
1946 extern AVCodec png_encoder;
1947 extern AVCodec ppm_encoder;
1948 extern AVCodec pgm_encoder;
1949 extern AVCodec pgmyuv_encoder;
1950 extern AVCodec pbm_encoder;
1951 extern AVCodec pam_encoder;
1952 extern AVCodec mpeg4_encoder;
1953 extern AVCodec msmpeg4v1_encoder;
1954 extern AVCodec msmpeg4v2_encoder;
1955 extern AVCodec msmpeg4v3_encoder;
1956 extern AVCodec wmv1_encoder;
1957 extern AVCodec wmv2_encoder;
1958 extern AVCodec huffyuv_encoder;
1959 extern AVCodec ffvhuff_encoder;
1960 extern AVCodec h264_encoder;
1961 extern AVCodec asv1_encoder;
1962 extern AVCodec asv2_encoder;
1963 extern AVCodec vcr1_encoder;
1964 extern AVCodec ffv1_encoder;
1965 extern AVCodec snow_encoder;
1966 extern AVCodec mdec_encoder;
1967 extern AVCodec zlib_encoder;
1968 extern AVCodec sonic_encoder;
1969 extern AVCodec sonic_ls_encoder;
1970 extern AVCodec svq1_encoder;
1971 extern AVCodec x264_encoder;
1973 extern AVCodec h263_decoder;
1974 extern AVCodec h261_decoder;
1975 extern AVCodec mpeg4_decoder;
1976 extern AVCodec msmpeg4v1_decoder;
1977 extern AVCodec msmpeg4v2_decoder;
1978 extern AVCodec msmpeg4v3_decoder;
1979 extern AVCodec wmv1_decoder;
1980 extern AVCodec wmv2_decoder;
1981 extern AVCodec vc9_decoder;
1982 extern AVCodec wmv3_decoder;
1983 extern AVCodec mpeg1video_decoder;
1984 extern AVCodec mpeg2video_decoder;
1985 extern AVCodec mpegvideo_decoder;
1986 extern AVCodec mpeg_xvmc_decoder;
1987 extern AVCodec h263i_decoder;
1988 extern AVCodec flv_decoder;
1989 extern AVCodec rv10_decoder;
1990 extern AVCodec rv20_decoder;
1991 extern AVCodec rv30_decoder;
1992 extern AVCodec rv40_decoder;
1993 extern AVCodec svq1_decoder;
1994 extern AVCodec svq3_decoder;
1995 extern AVCodec dvvideo_decoder;
1996 extern AVCodec wmav1_decoder;
1997 extern AVCodec wmav2_decoder;
1998 extern AVCodec mjpeg_decoder;
1999 extern AVCodec mjpegb_decoder;
2000 extern AVCodec sp5x_decoder;
2001 extern AVCodec png_decoder;
2002 extern AVCodec mp2_decoder;
2003 extern AVCodec mp3_decoder;
2004 extern AVCodec mp3adu_decoder;
2005 extern AVCodec mp3on4_decoder;
2006 extern AVCodec qdm2_decoder;
2007 extern AVCodec mace3_decoder;
2008 extern AVCodec mace6_decoder;
2009 extern AVCodec huffyuv_decoder;
2010 extern AVCodec ffvhuff_decoder;
2011 extern AVCodec oggvorbis_decoder;
2012 extern AVCodec oggtheora_decoder;
2013 extern AVCodec cyuv_decoder;
2014 extern AVCodec h264_decoder;
2015 extern AVCodec indeo3_decoder;
2016 extern AVCodec vp3_decoder;
2017 extern AVCodec theora_decoder;
2018 extern AVCodec amr_nb_decoder;
2019 extern AVCodec amr_nb_encoder;
2020 extern AVCodec amr_wb_encoder;
2021 extern AVCodec amr_wb_decoder;
2022 extern AVCodec aac_decoder;
2023 extern AVCodec mpeg4aac_decoder;
2024 extern AVCodec asv1_decoder;
2025 extern AVCodec asv2_decoder;
2026 extern AVCodec vcr1_decoder;
2027 extern AVCodec cljr_decoder;
2028 extern AVCodec ffv1_decoder;
2029 extern AVCodec snow_decoder;
2030 extern AVCodec fourxm_decoder;
2031 extern AVCodec mdec_decoder;
2032 extern AVCodec roq_decoder;
2033 extern AVCodec interplay_video_decoder;
2034 extern AVCodec xan_wc3_decoder;
2035 extern AVCodec rpza_decoder;
2036 extern AVCodec cinepak_decoder;
2037 extern AVCodec msrle_decoder;
2038 extern AVCodec msvideo1_decoder;
2039 extern AVCodec vqa_decoder;
2040 extern AVCodec idcin_decoder;
2041 extern AVCodec eightbps_decoder;
2042 extern AVCodec smc_decoder;
2043 extern AVCodec flic_decoder;
2044 extern AVCodec vmdvideo_decoder;
2045 extern AVCodec vmdaudio_decoder;
2046 extern AVCodec truemotion1_decoder;
2047 extern AVCodec truemotion2_decoder;
2048 extern AVCodec mszh_decoder;
2049 extern AVCodec zlib_decoder;
2050 extern AVCodec ra_144_decoder;
2051 extern AVCodec ra_288_decoder;
2052 extern AVCodec roq_dpcm_decoder;
2053 extern AVCodec interplay_dpcm_decoder;
2054 extern AVCodec xan_dpcm_decoder;
2055 extern AVCodec sol_dpcm_decoder;
2056 extern AVCodec sonic_decoder;
2057 extern AVCodec qtrle_decoder;
2058 extern AVCodec flac_decoder;
2059 extern AVCodec tscc_decoder;
2060 extern AVCodec ulti_decoder;
2061 extern AVCodec qdraw_decoder;
2062 extern AVCodec xl_decoder;
2063 extern AVCodec qpeg_decoder;
2064 extern AVCodec shorten_decoder;
2065 extern AVCodec loco_decoder;
2066 extern AVCodec wnv1_decoder;
2067 extern AVCodec aasc_decoder;
2068 extern AVCodec alac_decoder;
2069 extern AVCodec ws_snd1_decoder;
2070 extern AVCodec indeo2_decoder;
2071 extern AVCodec vorbis_decoder;
2072 extern AVCodec fraps_decoder;
2073 extern AVCodec libgsm_encoder;
2074 extern AVCodec libgsm_decoder;
2075 extern AVCodec bmp_decoder;
2078 #define PCM_CODEC(id, name) \
2079 extern AVCodec name ## _decoder; \
2080 extern AVCodec name ## _encoder
2082 PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
2083 PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
2084 PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
2085 PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
2086 PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
2087 PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
2088 PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
2089 PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
2090 PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
2091 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2092 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2093 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2094 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2095 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2096 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2097 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2098 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2102 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2103 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2104 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2105 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2106 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2107 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2108 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2109 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2110 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2111 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2112 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2113 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2114 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2115 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2116 PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
2120 /* dummy raw video codec */
2121 extern AVCodec rawvideo_encoder;
2122 extern AVCodec rawvideo_decoder;
2124 /* the following codecs use external GPL libs */
2125 extern AVCodec ac3_decoder;
2126 extern AVCodec dts_decoder;
2129 extern AVCodec dvdsub_encoder;
2130 extern AVCodec dvdsub_decoder;
2131 extern AVCodec dvbsub_encoder;
2132 extern AVCodec dvbsub_decoder;
2136 struct ReSampleContext;
2137 struct AVResampleContext;
2139 typedef struct ReSampleContext ReSampleContext;
2141 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2142 int output_rate, int input_rate);
2143 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2144 void audio_resample_close(ReSampleContext *s);
2146 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2147 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2148 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2149 void av_resample_close(struct AVResampleContext *c);
2151 /* YUV420 format is assumed ! */
2153 struct ImgReSampleContext;
2155 typedef struct ImgReSampleContext ImgReSampleContext;
2157 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2158 int input_width, int input_height);
2160 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2161 int iwidth, int iheight,
2162 int topBand, int bottomBand,
2163 int leftBand, int rightBand,
2164 int padtop, int padbottom,
2165 int padleft, int padright);
2168 void img_resample(ImgReSampleContext *s,
2169 AVPicture *output, const AVPicture *input);
2171 void img_resample_close(ImgReSampleContext *s);
2174 * Allocate memory for a picture. Call avpicture_free to free it.
2176 * @param picture the picture to be filled in.
2177 * @param pix_fmt the format of the picture.
2178 * @param width the width of the picture.
2179 * @param height the height of the picture.
2180 * @return 0 if successful, -1 if not.
2182 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2184 /* Free a picture previously allocated by avpicture_alloc. */
2185 void avpicture_free(AVPicture *picture);
2187 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2188 int pix_fmt, int width, int height);
2189 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2190 unsigned char *dest, int dest_size);
2191 int avpicture_get_size(int pix_fmt, int width, int height);
2192 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2193 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2194 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2195 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2196 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2198 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2199 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2200 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2201 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2202 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2203 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2205 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2207 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2208 int has_alpha, int *loss_ptr);
2210 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2211 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2212 int img_get_alpha_info(const AVPicture *src,
2213 int pix_fmt, int width, int height);
2215 /* convert among pixel formats */
2216 int img_convert(AVPicture *dst, int dst_pix_fmt,
2217 const AVPicture *src, int pix_fmt,
2218 int width, int height);
2220 /* deinterlace a picture */
2221 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2222 int pix_fmt, int width, int height);
2224 /* external high level API */
2226 extern AVCodec *first_avcodec;
2228 /* returns LIBAVCODEC_VERSION_INT constant */
2229 unsigned avcodec_version(void);
2230 /* returns LIBAVCODEC_BUILD constant */
2231 unsigned avcodec_build(void);
2232 void avcodec_init(void);
2234 void register_avcodec(AVCodec *format);
2235 AVCodec *avcodec_find_encoder(enum CodecID id);
2236 AVCodec *avcodec_find_encoder_by_name(const char *name);
2237 AVCodec *avcodec_find_decoder(enum CodecID id);
2238 AVCodec *avcodec_find_decoder_by_name(const char *name);
2239 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2241 void avcodec_get_context_defaults(AVCodecContext *s);
2242 AVCodecContext *avcodec_alloc_context(void);
2243 void avcodec_get_frame_defaults(AVFrame *pic);
2244 AVFrame *avcodec_alloc_frame(void);
2246 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2247 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2248 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2249 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2250 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2251 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2253 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2254 void avcodec_thread_free(AVCodecContext *s);
2255 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2256 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2257 //FIXME func typedef
2260 * opens / inits the AVCodecContext.
2263 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2265 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2266 int *frame_size_ptr,
2267 uint8_t *buf, int buf_size);
2268 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2269 int *got_picture_ptr,
2270 uint8_t *buf, int buf_size);
2271 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2273 const uint8_t *buf, int buf_size);
2274 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2276 uint8_t *buf, int buf_size);
2277 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2278 const short *samples);
2279 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2280 const AVFrame *pict);
2281 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2282 const AVSubtitle *sub);
2284 int avcodec_close(AVCodecContext *avctx);
2286 void avcodec_register_all(void);
2288 void avcodec_flush_buffers(AVCodecContext *avctx);
2290 void avcodec_default_free_buffers(AVCodecContext *s);
2292 /* misc usefull functions */
2295 * returns a single letter to describe the picture type
2297 char av_get_pict_type_char(int pict_type);
2301 typedef struct AVCodecParserContext {
2303 struct AVCodecParser *parser;
2304 int64_t frame_offset; /* offset of the current frame */
2305 int64_t cur_offset; /* current offset
2306 (incremented by each av_parser_parse()) */
2307 int64_t last_frame_offset; /* offset of the last frame */
2309 int pict_type; /* XXX: put it back in AVCodecContext */
2310 int repeat_pict; /* XXX: put it back in AVCodecContext */
2311 int64_t pts; /* pts of the current frame */
2312 int64_t dts; /* dts of the current frame */
2317 int fetch_timestamp;
2319 #define AV_PARSER_PTS_NB 4
2320 int cur_frame_start_index;
2321 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2322 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2323 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2326 #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
2327 } AVCodecParserContext;
2329 typedef struct AVCodecParser {
2330 int codec_ids[5]; /* several codec IDs are permitted */
2332 int (*parser_init)(AVCodecParserContext *s);
2333 int (*parser_parse)(AVCodecParserContext *s,
2334 AVCodecContext *avctx,
2335 uint8_t **poutbuf, int *poutbuf_size,
2336 const uint8_t *buf, int buf_size);
2337 void (*parser_close)(AVCodecParserContext *s);
2338 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2339 struct AVCodecParser *next;
2342 extern AVCodecParser *av_first_parser;
2344 void av_register_codec_parser(AVCodecParser *parser);
2345 AVCodecParserContext *av_parser_init(int codec_id);
2346 int av_parser_parse(AVCodecParserContext *s,
2347 AVCodecContext *avctx,
2348 uint8_t **poutbuf, int *poutbuf_size,
2349 const uint8_t *buf, int buf_size,
2350 int64_t pts, int64_t dts);
2351 int av_parser_change(AVCodecParserContext *s,
2352 AVCodecContext *avctx,
2353 uint8_t **poutbuf, int *poutbuf_size,
2354 const uint8_t *buf, int buf_size, int keyframe);
2355 void av_parser_close(AVCodecParserContext *s);
2357 extern AVCodecParser mpegvideo_parser;
2358 extern AVCodecParser mpeg4video_parser;
2359 extern AVCodecParser h261_parser;
2360 extern AVCodecParser h263_parser;
2361 extern AVCodecParser h264_parser;
2362 extern AVCodecParser mjpeg_parser;
2363 extern AVCodecParser pnm_parser;
2364 extern AVCodecParser mpegaudio_parser;
2365 extern AVCodecParser ac3_parser;
2366 extern AVCodecParser dvdsub_parser;
2367 extern AVCodecParser dvbsub_parser;
2370 void *av_malloc(unsigned int size);
2371 void *av_mallocz(unsigned int size);
2372 void *av_realloc(void *ptr, unsigned int size);
2373 void av_free(void *ptr);
2374 char *av_strdup(const char *s);
2375 void av_freep(void *ptr);
2376 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2377 /* for static data only */
2378 /* call av_free_static to release all staticaly allocated tables */
2379 void av_free_static(void);
2380 void *av_mallocz_static(unsigned int size);
2381 void *av_realloc_static(void *ptr, unsigned int size);
2383 /* add by bero : in adx.c */
2384 int is_adx(const unsigned char *buf,size_t bufsize);
2386 void img_copy(AVPicture *dst, const AVPicture *src,
2387 int pix_fmt, int width, int height);
2393 #define AV_LOG_QUIET -1
2394 #define AV_LOG_ERROR 0
2395 #define AV_LOG_INFO 1
2396 #define AV_LOG_DEBUG 2
2399 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2401 extern void av_log(void*, int level, const char *fmt, ...);
2404 extern void av_vlog(void*, int level, const char *fmt, va_list);
2405 extern int av_log_get_level(void);
2406 extern void av_log_set_level(int);
2407 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2410 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2411 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2412 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2413 (((uint8_t*)(x))[1] << 16) | \
2414 (((uint8_t*)(x))[2] << 8) | \
2416 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2417 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2418 (((uint8_t*)(x))[2] << 16) | \
2419 (((uint8_t*)(x))[1] << 8) | \
2423 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2429 #endif /* AVCODEC_H */