16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "CVS"
20 #define LIBAVCODEC_BUILD 4758
23 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
24 #define LIBAVCODEC_VERSION FFMPEG_VERSION
26 #define AV_STRINGIFY(s) AV_TOSTRING(s)
27 #define AV_TOSTRING(s) #s
28 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
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,
115 /* various pcm "codecs" */
116 CODEC_ID_PCM_S16LE= 0x10000,
125 /* various adpcm codecs */
126 CODEC_ID_ADPCM_IMA_QT= 0x11000,
127 CODEC_ID_ADPCM_IMA_WAV,
128 CODEC_ID_ADPCM_IMA_DK3,
129 CODEC_ID_ADPCM_IMA_DK4,
130 CODEC_ID_ADPCM_IMA_WS,
131 CODEC_ID_ADPCM_IMA_SMJPEG,
142 CODEC_ID_AMR_NB= 0x12000,
145 /* RealAudio codecs*/
146 CODEC_ID_RA_144= 0x13000,
149 /* various DPCM codecs */
150 CODEC_ID_ROQ_DPCM= 0x14000,
151 CODEC_ID_INTERPLAY_DPCM,
155 CODEC_ID_MP2= 0x15000,
156 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
175 CODEC_ID_WESTWOOD_SND1,
178 CODEC_ID_OGGTHEORA= 0x16000,
180 /* subtitle codecs */
181 CODEC_ID_DVD_SUBTITLE= 0x17000,
182 CODEC_ID_DVB_SUBTITLE,
184 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
185 stream (only used by libavformat) */
188 /* CODEC_ID_MP3LAME is absolete */
189 #define CODEC_ID_MP3LAME CODEC_ID_MP3
192 CODEC_TYPE_UNKNOWN = -1,
200 * Pixel format. Notes:
202 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
203 * color is put together as:
204 * (A << 24) | (R << 16) | (G << 8) | B
205 * This is stored as BGRA on little endian CPU architectures and ARGB on
208 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
209 * image data is stored in AVFrame.data[0]. The palette is transported in
210 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
211 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
212 * also endian-specific). Note also that the individual RGB palette
213 * components stored in AVFrame.data[1] should be in the range 0..255.
214 * This is important as many custom PAL8 video codecs that were designed
215 * to run on the IBM VGA graphics adapter use 6-bit palette components.
219 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
220 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
221 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
222 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
223 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
224 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
225 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
226 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
227 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
228 PIX_FMT_RGB565, ///< always stored in cpu endianness
229 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
231 PIX_FMT_MONOWHITE, ///< 0 is white
232 PIX_FMT_MONOBLACK, ///< 0 is black
233 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
234 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
235 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
236 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
237 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
238 PIX_FMT_XVMC_MPEG2_IDCT,
239 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
240 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
244 /* currently unused, may be used if 24/32 bits samples ever supported */
246 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
247 SAMPLE_FMT_S32, ///< signed 32 bits
248 SAMPLE_FMT_FLT, ///< float
249 SAMPLE_FMT_DBL, ///< double
253 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
256 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
257 * this is mainly needed because some optimized bitstream readers read
258 * 32 or 64 bit at once and could read over the end<br>
259 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
260 * MPEG bitstreams could cause overread and segfault
262 #define FF_INPUT_BUFFER_PADDING_SIZE 8
265 * minimum encoding buffer size.
266 * used to avoid some checks during header writing
268 #define FF_MIN_BUFFER_SIZE 16384
270 /* motion estimation type, EPZS by default */
281 AV_ROUND_ZERO = 0, ///< round toward zero
282 AV_ROUND_INF = 1, ///< round away from zero
283 AV_ROUND_DOWN = 2, ///< round toward -infinity
284 AV_ROUND_UP = 3, ///< round toward +infinity
285 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
289 //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
290 AVDISCARD_NONE =-16, ///< discard nothing
291 AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
292 AVDISCARD_NONREF = 8, ///< discard all non reference
293 AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
294 AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
295 AVDISCARD_ALL = 48, ///< discard all
298 typedef struct RcOverride{
301 int qscale; // if this is 0 then quality_factor will be used instead
302 float quality_factor;
305 /* only for ME compatiblity with old apps */
306 extern int motion_estimation_method;
308 #define FF_MAX_B_FRAMES 8
311 these flags can be passed in AVCodecContext.flags before initing
312 Note: not everything is supported yet.
315 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
316 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
317 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
318 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
319 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
320 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
321 /* parent program gurantees that the input for b-frame containing streams is not written to
322 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
323 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
324 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
325 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
326 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
327 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
328 #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
329 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
330 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
331 of only at frame boundaries */
332 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
333 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
334 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
335 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
336 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
337 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
338 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
339 /* Fx : Flag for h263+ extra options */
340 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
341 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
342 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
343 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
344 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
345 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
346 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
347 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
348 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
349 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
350 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
351 #define CODEC_FLAG_CLOSED_GOP 0x80000000
352 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
353 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
354 #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
355 #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
357 /* Unsupported options :
358 * Syntax Arithmetic coding (SAC)
359 * Reference Picture Selection
360 * Independant Segment Decoding */
362 /* codec capabilities */
364 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
366 * Codec uses get_buffer() for allocating buffers.
367 * direct rendering method 1
369 #define CODEC_CAP_DR1 0x0002
370 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
372 #define CODEC_CAP_PARSE_ONLY 0x0004
373 #define CODEC_CAP_TRUNCATED 0x0008
374 /* codec can export data for HW decoding (XvMC) */
375 #define CODEC_CAP_HWACCEL 0x0010
377 * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
378 * if this is not set, the codec is guranteed to never be feeded with NULL data
380 #define CODEC_CAP_DELAY 0x0020
382 //the following defines may change, don't expect compatibility if you use them
383 #define MB_TYPE_INTRA4x4 0x0001
384 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
385 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
386 #define MB_TYPE_16x16 0x0008
387 #define MB_TYPE_16x8 0x0010
388 #define MB_TYPE_8x16 0x0020
389 #define MB_TYPE_8x8 0x0040
390 #define MB_TYPE_INTERLACED 0x0080
391 #define MB_TYPE_DIRECT2 0x0100 //FIXME
392 #define MB_TYPE_ACPRED 0x0200
393 #define MB_TYPE_GMC 0x0400
394 #define MB_TYPE_SKIP 0x0800
395 #define MB_TYPE_P0L0 0x1000
396 #define MB_TYPE_P1L0 0x2000
397 #define MB_TYPE_P0L1 0x4000
398 #define MB_TYPE_P1L1 0x8000
399 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
400 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
401 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
402 #define MB_TYPE_QUANT 0x00010000
403 #define MB_TYPE_CBP 0x00020000
404 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
408 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
410 typedef struct AVPanScan{
413 * - encoding: set by user.
414 * - decoding: set by lavc
419 * width and height in 1/16 pel
420 * - encoding: set by user.
421 * - decoding: set by lavc
427 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
428 * - encoding: set by user.
429 * - decoding: set by lavc
431 int16_t position[3][2];
434 #define FF_COMMON_FRAME \
436 * pointer to the picture planes.\
437 * this might be different from the first allocated byte\
444 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
445 * this isn't used by lavc unless the default get/release_buffer() is used\
451 * 1 -> keyframe, 0-> not\
452 * - encoding: set by lavc\
453 * - decoding: set by lavc\
458 * picture type of the frame, see ?_TYPE below.\
459 * - encoding: set by lavc for coded_picture (and set by user for input)\
460 * - decoding: set by lavc\
465 * presentation timestamp in time_base units (time when frame should be shown to user)\
466 * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed\
467 * - encoding: MUST be set by user\
468 * - decoding: set by lavc\
473 * picture number in bitstream order.\
474 * - encoding: set by\
475 * - decoding: set by lavc\
477 int coded_picture_number;\
479 * picture number in display order.\
480 * - encoding: set by\
481 * - decoding: set by lavc\
483 int display_picture_number;\
486 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
487 * - encoding: set by lavc for coded_picture (and set by user for input)\
488 * - decoding: set by lavc\
493 * buffer age (1->was last buffer and dint change, 2->..., ...).\
494 * set to INT_MAX if the buffer has not been used yet \
495 * - encoding: unused\
496 * - decoding: MUST be set by get_buffer()\
501 * is this picture used as reference\
502 * - encoding: unused\
503 * - decoding: set by lavc (before get_buffer() call))\
509 * - encoding: unused\
510 * - decoding: set by lavc\
512 int8_t *qscale_table;\
515 * - encoding: unused\
516 * - decoding: set by lavc\
521 * mbskip_table[mb]>=1 if MB didnt change\
522 * stride= mb_width = (width+15)>>4\
523 * - encoding: unused\
524 * - decoding: set by lavc\
526 uint8_t *mbskip_table;\
529 * Motion vector table.\
532 * int mv_sample_log2= 4 - motion_subsample_log2;\
533 * int mb_width= (width+15)>>4;\
534 * int mv_stride= (mb_width << mv_sample_log2) + 1;\
535 * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];\
537 * - encoding: set by user\
538 * - decoding: set by lavc\
540 int16_t (*motion_val[2])[2];\
543 * Macroblock type table\
544 * mb_type_base + mb_width + 2\
545 * - encoding: set by user\
546 * - decoding: set by lavc\
551 * log2 of the size of the block which a single vector in motion_val represents: \
552 * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)\
553 * - encoding: unused\
554 * - decoding: set by lavc\
556 uint8_t motion_subsample_log2;\
559 * for some private data of the user\
560 * - encoding: unused\
561 * - decoding: set by user\
567 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
568 * - decoding: unused\
573 * type of the buffer (to keep track of who has to dealloc data[*])\
574 * - encoding: set by the one who allocs it\
575 * - decoding: set by the one who allocs it\
576 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
581 * when decoding, this signal how much the picture must be delayed.\
582 * extra_delay = repeat_pict / (2*fps)\
583 * - encoding: unused\
584 * - decoding: set by lavc\
594 * The content of the picture is interlaced.\
595 * - encoding: set by user\
596 * - decoding: set by lavc (default 0)\
598 int interlaced_frame;\
601 * if the content is interlaced, is top field displayed first.\
602 * - encoding: set by user\
603 * - decoding: set by lavc\
605 int top_field_first;\
609 * - encoding: set by user\
610 * - decoding: set by lavc\
612 AVPanScan *pan_scan;\
615 * tell user application that palette has changed from previous frame.\
616 * - encoding: ??? (no palette-enabled encoder yet)\
617 * - decoding: set by lavc (default 0)\
619 int palette_has_changed;\
622 * Codec suggestion on buffer type if != 0\
623 * - encoding: unused\
624 * - decoding: set by lavc (before get_buffer() call))\
630 * - encoding: unused\
631 * - decoding: set by lavc\
636 * Motion referece frame index\
637 * - encoding: set by user\
638 * - decoding: set by lavc\
640 int8_t *ref_index[2];
642 #define FF_QSCALE_TYPE_MPEG1 0
643 #define FF_QSCALE_TYPE_MPEG2 1
645 #define FF_BUFFER_TYPE_INTERNAL 1
646 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
647 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
648 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
651 #define FF_I_TYPE 1 // Intra
652 #define FF_P_TYPE 2 // Predicted
653 #define FF_B_TYPE 3 // Bi-dir predicted
654 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
658 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
659 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
660 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
661 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
666 typedef struct AVFrame {
670 #define DEFAULT_FRAME_RATE_BASE 1001000
675 typedef struct AVCLASS AVClass;
677 const char* class_name;
678 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
679 or AVFormatContext, which begin with an AVClass.
680 Needed because av_log is in libavcodec and has no visibility
681 of AVIn/OutputFormat */
685 * main external api structure.
687 typedef struct AVCodecContext {
689 * Info on struct for av_log
690 * - set by avcodec_alloc_context
694 * the average bitrate.
695 * - encoding: set by user. unused for constant quantizer encoding
696 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
701 * number of bits the bitstream is allowed to diverge from the reference.
702 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
703 * - encoding: set by user. unused for constant quantizer encoding
706 int bit_rate_tolerance;
710 * - encoding: set by user.
711 * - decoding: set by user.
716 * some codecs needs additionnal format info. It is stored here
717 * - encoding: set by user.
718 * - decoding: set by lavc. (FIXME is this ok?)
723 * motion estimation algorithm used for video coding.
724 * - encoding: MUST be set by user.
730 * some codecs need / can use extra-data like huffman tables.
731 * mjpeg: huffman tables
732 * rv10: additional flags
733 * mpeg4: global headers (they can be in the bitstream or here)
734 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
735 * then extradata_size to avoid prolems if its read with the bitstream reader
736 * - encoding: set/allocated/freed by lavc.
737 * - decoding: set/allocated/freed by user.
744 * time base in which the timestamps are specified.
745 * - encoding: MUST be set by user
746 * - decoding: set by lavc.
748 AVRational time_base;
751 * picture width / height.
752 * - encoding: MUST be set by user.
753 * - decoding: set by lavc.
754 * Note, for compatibility its possible to set this instead of
755 * coded_width/height before decoding
759 #define FF_ASPECT_EXTENDED 15
762 * the number of pictures in a group of pitures, or 0 for intra_only.
763 * - encoding: set by user.
769 * pixel format, see PIX_FMT_xxx.
770 * - encoding: set by user.
771 * - decoding: set by lavc.
773 enum PixelFormat pix_fmt;
776 * Frame rate emulation. If not zero lower layer (i.e. format handler)
777 * has to read frames at native frame rate.
778 * - encoding: set by user.
779 * - decoding: unused.
784 * if non NULL, 'draw_horiz_band' is called by the libavcodec
785 * decoder to draw an horizontal band. It improve cache usage. Not
786 * all codecs can do that. You must check the codec capabilities
789 * - decoding: set by user.
790 * @param height the height of the slice
791 * @param y the y position of the slice
792 * @param type 1->top field, 2->bottom field, 3->frame
793 * @param offset offset into the AVFrame.data from which the slice should be read
795 void (*draw_horiz_band)(struct AVCodecContext *s,
796 const AVFrame *src, int offset[4],
797 int y, int type, int height);
800 int sample_rate; ///< samples per sec
804 * audio sample format.
805 * - encoding: set by user.
806 * - decoding: set by lavc.
808 enum SampleFormat sample_fmt; ///< sample format, currenly unused
810 /* the following data should not be initialized */
812 * samples per packet. initialized when calling 'init'
815 int frame_number; ///< audio or video frame number
816 int real_pict_num; ///< returns the real picture number of previous encoded frame
819 * number of frames the decoded output will be delayed relative to
821 * - encoding: set by lavc.
826 /* - encoding parameters */
827 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
828 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
832 * - encoding: set by user.
839 * - encoding: set by user.
845 * maximum quantizer difference etween frames.
846 * - encoding: set by user.
852 * maximum number of b frames between non b frames.
853 * note: the output will be delayed by max_b_frames+1 relative to the input
854 * - encoding: set by user.
860 * qscale factor between ip and b frames.
861 * - encoding: set by user.
864 float b_quant_factor;
866 /** obsolete FIXME remove */
868 int b_frame_strategy;
872 * deprecated in favor of skip_idct and skip_frame
874 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
878 struct AVCodec *codec;
882 /* unused, FIXME remove*/
885 int rtp_payload_size; /* The size of the RTP payload: the coder will */
886 /* do it's best to deliver a chunk with size */
887 /* below rtp_payload_size, the chunk will start */
888 /* with a start code on some codecs like H.263 */
889 /* This doesn't take account of any particular */
890 /* headers inside the transmited RTP payload */
893 /* The RTP callback: This function is called */
894 /* every time the encoder has a packet to send */
895 /* Depends on the encoder if the data starts */
896 /* with a Start Code (it should) H.263 does. */
897 /* mb_nb contains the number of macroblocks */
898 /* encoded in the RTP payload */
899 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
901 /* statistics, used for 2-pass encoding */
912 * number of bits used for the previously encoded frame.
913 * - encoding: set by lavc
919 * private data of the user, can be used to carry app specific stuff.
920 * - encoding: set by user
921 * - decoding: set by user
926 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
927 enum CodecID codec_id; /* see CODEC_ID_xxx */
930 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
931 * this is used to workaround some encoder bugs
932 * - encoding: set by user, if not then the default based on codec_id will be used
933 * - decoding: set by user, will be converted to upper case by lavc during init
935 unsigned int codec_tag;
938 * workaround bugs in encoders which sometimes cannot be detected automatically.
939 * - encoding: set by user
940 * - decoding: set by user
943 #define FF_BUG_AUTODETECT 1 ///< autodetection
944 #define FF_BUG_OLD_MSMPEG4 2
945 #define FF_BUG_XVID_ILACE 4
946 #define FF_BUG_UMP4 8
947 #define FF_BUG_NO_PADDING 16
948 #define FF_BUG_AMV 32
949 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
950 #define FF_BUG_QPEL_CHROMA 64
951 #define FF_BUG_STD_QPEL 128
952 #define FF_BUG_QPEL_CHROMA2 256
953 #define FF_BUG_DIRECT_BLOCKSIZE 512
954 #define FF_BUG_EDGE 1024
955 #define FF_BUG_HPEL_CHROMA 2048
956 #define FF_BUG_DC_CLIP 4096
957 #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
958 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
961 * luma single coeff elimination threshold.
962 * - encoding: set by user
965 int luma_elim_threshold;
968 * chroma single coeff elimination threshold.
969 * - encoding: set by user
972 int chroma_elim_threshold;
975 * strictly follow the std (MPEG4, ...).
976 * - encoding: set by user
979 int strict_std_compliance;
980 #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
981 #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
982 #define FF_COMPLIANCE_NORMAL 0
983 #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
984 #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
987 * qscale offset between ip and b frames.
988 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
989 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
990 * - encoding: set by user.
993 float b_quant_offset;
996 * error resilience higher values will detect more errors but may missdetect
997 * some more or less valid parts as errors.
999 * - decoding: set by user
1001 int error_resilience;
1002 #define FF_ER_CAREFULL 1
1003 #define FF_ER_COMPLIANT 2
1004 #define FF_ER_AGGRESSIVE 3
1005 #define FF_ER_VERY_AGGRESSIVE 4
1008 * called at the beginning of each frame to get a buffer for it.
1009 * if pic.reference is set then the frame will be read later by lavc
1010 * avcodec_align_dimensions() should be used to find the required width and
1011 * height, as they normally need to be rounded up to the next multiple of 16
1012 * - encoding: unused
1013 * - decoding: set by lavc, user can override
1015 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
1018 * called to release buffers which where allocated with get_buffer.
1019 * a released buffer can be reused in get_buffer()
1020 * pic.data[*] must be set to NULL
1021 * - encoding: unused
1022 * - decoding: set by lavc, user can override
1024 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
1027 * if 1 the stream has a 1 frame delay during decoding.
1028 * - encoding: set by lavc
1029 * - decoding: set by lavc
1034 * number of bytes per packet if constant and known or 0
1035 * used by some WAV based audio codecs
1039 int parse_only; /* - decoding only: if true, only parsing is done
1040 (function avcodec_parse_frame()). The frame
1041 data is returned. Only MPEG codecs support this now. */
1044 * 0-> h263 quant 1-> mpeg quant.
1045 * - encoding: set by user.
1046 * - decoding: unused
1051 * pass1 encoding statistics output buffer.
1052 * - encoding: set by lavc
1053 * - decoding: unused
1058 * pass2 encoding statistics input buffer.
1059 * concatenated stuff from stats_out of pass1 should be placed here
1060 * - encoding: allocated/set/freed by user
1061 * - decoding: unused
1066 * ratecontrol qmin qmax limiting method.
1067 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
1068 * - encoding: set by user.
1069 * - decoding: unused
1077 * ratecontrol override, see RcOverride.
1078 * - encoding: allocated/set/freed by user.
1079 * - decoding: unused
1081 RcOverride *rc_override;
1082 int rc_override_count;
1085 * rate control equation.
1086 * - encoding: set by user
1087 * - decoding: unused
1093 * - encoding: set by user.
1094 * - decoding: unused
1100 * - encoding: set by user.
1101 * - decoding: unused
1106 * decoder bitstream buffer size.
1107 * - encoding: set by user.
1108 * - decoding: unused
1111 float rc_buffer_aggressivity;
1114 * qscale factor between p and i frames.
1115 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1116 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1117 * - encoding: set by user.
1118 * - decoding: unused
1120 float i_quant_factor;
1123 * qscale offset between p and i frames.
1124 * - encoding: set by user.
1125 * - decoding: unused
1127 float i_quant_offset;
1130 * initial complexity for pass1 ratecontrol.
1131 * - encoding: set by user.
1132 * - decoding: unused
1134 float rc_initial_cplx;
1137 * dct algorithm, see FF_DCT_* below.
1138 * - encoding: set by user
1139 * - decoding: unused
1142 #define FF_DCT_AUTO 0
1143 #define FF_DCT_FASTINT 1
1144 #define FF_DCT_INT 2
1145 #define FF_DCT_MMX 3
1146 #define FF_DCT_MLIB 4
1147 #define FF_DCT_ALTIVEC 5
1148 #define FF_DCT_FAAN 6
1151 * luminance masking (0-> disabled).
1152 * - encoding: set by user
1153 * - decoding: unused
1158 * temporary complexity masking (0-> disabled).
1159 * - encoding: set by user
1160 * - decoding: unused
1162 float temporal_cplx_masking;
1165 * spatial complexity masking (0-> disabled).
1166 * - encoding: set by user
1167 * - decoding: unused
1169 float spatial_cplx_masking;
1172 * p block masking (0-> disabled).
1173 * - encoding: set by user
1174 * - decoding: unused
1179 * darkness masking (0-> disabled).
1180 * - encoding: set by user
1181 * - decoding: unused
1186 /* for binary compatibility */
1190 * idct algorithm, see FF_IDCT_* below.
1191 * - encoding: set by user
1192 * - decoding: set by user
1195 #define FF_IDCT_AUTO 0
1196 #define FF_IDCT_INT 1
1197 #define FF_IDCT_SIMPLE 2
1198 #define FF_IDCT_SIMPLEMMX 3
1199 #define FF_IDCT_LIBMPEG2MMX 4
1200 #define FF_IDCT_PS2 5
1201 #define FF_IDCT_MLIB 6
1202 #define FF_IDCT_ARM 7
1203 #define FF_IDCT_ALTIVEC 8
1204 #define FF_IDCT_SH4 9
1205 #define FF_IDCT_SIMPLEARM 10
1206 #define FF_IDCT_H264 11
1207 #define FF_IDCT_VP3 12
1208 #define FF_IDCT_IPP 13
1212 * - encoding: set by lavc
1213 * - decoding: set by user (or 0)
1217 * slice offsets in the frame in bytes.
1218 * - encoding: set/allocated by lavc
1219 * - decoding: set/allocated by user (or NULL)
1224 * error concealment flags.
1225 * - encoding: unused
1226 * - decoding: set by user
1228 int error_concealment;
1229 #define FF_EC_GUESS_MVS 1
1230 #define FF_EC_DEBLOCK 2
1233 * dsp_mask could be add used to disable unwanted CPU features
1234 * CPU features (i.e. MMX, SSE. ...)
1236 * with FORCE flag you may instead enable given CPU features
1237 * (Dangerous: usable in case of misdetection, improper usage however will
1238 * result into program crash)
1241 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1242 /* lower 16 bits - CPU features */
1244 #define FF_MM_MMX 0x0001 /* standard MMX */
1245 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1246 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1247 #define FF_MM_SSE 0x0008 /* SSE functions */
1248 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1249 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1250 #endif /* HAVE_MMX */
1252 #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
1253 #endif /* HAVE_IWMMXT */
1256 * bits per sample/pixel from the demuxer (needed for huffyuv).
1257 * - encoding: set by lavc
1258 * - decoding: set by user
1260 int bits_per_sample;
1263 * prediction method (needed for huffyuv).
1264 * - encoding: set by user
1265 * - decoding: unused
1267 int prediction_method;
1268 #define FF_PRED_LEFT 0
1269 #define FF_PRED_PLANE 1
1270 #define FF_PRED_MEDIAN 2
1273 * sample aspect ratio (0 if unknown).
1274 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1275 * - encoding: set by user.
1276 * - decoding: set by lavc.
1278 AVRational sample_aspect_ratio;
1281 * the picture in the bitstream.
1282 * - encoding: set by lavc
1283 * - decoding: set by lavc
1285 AVFrame *coded_frame;
1289 * - encoding: set by user.
1290 * - decoding: set by user.
1293 #define FF_DEBUG_PICT_INFO 1
1294 #define FF_DEBUG_RC 2
1295 #define FF_DEBUG_BITSTREAM 4
1296 #define FF_DEBUG_MB_TYPE 8
1297 #define FF_DEBUG_QP 16
1298 #define FF_DEBUG_MV 32
1299 #define FF_DEBUG_DCT_COEFF 0x00000040
1300 #define FF_DEBUG_SKIP 0x00000080
1301 #define FF_DEBUG_STARTCODE 0x00000100
1302 #define FF_DEBUG_PTS 0x00000200
1303 #define FF_DEBUG_ER 0x00000400
1304 #define FF_DEBUG_MMCO 0x00000800
1305 #define FF_DEBUG_BUGS 0x00001000
1306 #define FF_DEBUG_VIS_QP 0x00002000
1307 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1311 * - encoding: set by user.
1312 * - decoding: set by user.
1315 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1316 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1317 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1321 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1322 * - decoding: unused
1327 * minimum MB quantizer.
1328 * - encoding: unused
1329 * - decoding: unused
1334 * maximum MB quantizer.
1335 * - encoding: unused
1336 * - decoding: unused
1341 * motion estimation compare function.
1342 * - encoding: set by user.
1343 * - decoding: unused
1347 * subpixel motion estimation compare function.
1348 * - encoding: set by user.
1349 * - decoding: unused
1353 * macroblock compare function (not supported yet).
1354 * - encoding: set by user.
1355 * - decoding: unused
1359 * interlaced dct compare function
1360 * - encoding: set by user.
1361 * - decoding: unused
1364 #define FF_CMP_SAD 0
1365 #define FF_CMP_SSE 1
1366 #define FF_CMP_SATD 2
1367 #define FF_CMP_DCT 3
1368 #define FF_CMP_PSNR 4
1369 #define FF_CMP_BIT 5
1371 #define FF_CMP_ZERO 7
1372 #define FF_CMP_VSAD 8
1373 #define FF_CMP_VSSE 9
1374 #define FF_CMP_NSSE 10
1375 #define FF_CMP_W53 11
1376 #define FF_CMP_W97 12
1377 #define FF_CMP_DCTMAX 13
1378 #define FF_CMP_CHROMA 256
1381 * ME diamond size & shape.
1382 * - encoding: set by user.
1383 * - decoding: unused
1388 * amount of previous MV predictors (2a+1 x 2a+1 square).
1389 * - encoding: set by user.
1390 * - decoding: unused
1392 int last_predictor_count;
1395 * pre pass for motion estimation.
1396 * - encoding: set by user.
1397 * - decoding: unused
1402 * motion estimation pre pass compare function.
1403 * - encoding: set by user.
1404 * - decoding: unused
1409 * ME pre pass diamond size & shape.
1410 * - encoding: set by user.
1411 * - decoding: unused
1416 * subpel ME quality.
1417 * - encoding: set by user.
1418 * - decoding: unused
1420 int me_subpel_quality;
1423 * callback to negotiate the pixelFormat.
1424 * @param fmt is the list of formats which are supported by the codec,
1425 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1426 * the first is allways the native one
1427 * @return the choosen format
1428 * - encoding: unused
1429 * - decoding: set by user, if not set then the native format will always be choosen
1431 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1434 * DTG active format information (additionnal aspect ratio
1435 * information only used in DVB MPEG2 transport streams). 0 if
1438 * - encoding: unused.
1439 * - decoding: set by decoder
1441 int dtg_active_format;
1442 #define FF_DTG_AFD_SAME 8
1443 #define FF_DTG_AFD_4_3 9
1444 #define FF_DTG_AFD_16_9 10
1445 #define FF_DTG_AFD_14_9 11
1446 #define FF_DTG_AFD_4_3_SP_14_9 13
1447 #define FF_DTG_AFD_16_9_SP_14_9 14
1448 #define FF_DTG_AFD_SP_4_3 15
1451 * Maximum motion estimation search range in subpel units.
1452 * if 0 then no limit
1454 * - encoding: set by user.
1455 * - decoding: unused.
1460 * intra quantizer bias.
1461 * - encoding: set by user.
1462 * - decoding: unused
1464 int intra_quant_bias;
1465 #define FF_DEFAULT_QUANT_BIAS 999999
1468 * inter quantizer bias.
1469 * - encoding: set by user.
1470 * - decoding: unused
1472 int inter_quant_bias;
1476 * - encoding: unused.
1477 * - decoding: which clrtable should be used for 8bit RGB images
1478 * table have to be stored somewhere FIXME
1483 * internal_buffer count.
1484 * Don't touch, used by lavc default_get_buffer()
1486 int internal_buffer_count;
1490 * Don't touch, used by lavc default_get_buffer()
1492 void *internal_buffer;
1494 #define FF_LAMBDA_SHIFT 7
1495 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1496 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1497 #define FF_LAMBDA_MAX (256*128-1)
1499 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1501 * global quality for codecs which cannot change it per frame.
1502 * this should be proportional to MPEG1/2/4 qscale.
1503 * - encoding: set by user.
1504 * - decoding: unused
1508 #define FF_CODER_TYPE_VLC 0
1509 #define FF_CODER_TYPE_AC 1
1512 * - encoding: set by user.
1513 * - decoding: unused
1519 * - encoding: set by user.
1520 * - decoding: unused
1526 * - encoding: unused
1527 * - decoding: set by user.
1530 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1531 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1532 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1535 * XVideo Motion Acceleration
1536 * - encoding: forbidden
1537 * - decoding: set by decoder
1539 int xvmc_acceleration;
1542 * macroblock decision mode
1543 * - encoding: set by user.
1544 * - decoding: unused
1547 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1548 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1549 #define FF_MB_DECISION_RD 2 ///< rate distoration
1552 * custom intra quantization matrix
1553 * - encoding: set by user, can be NULL
1554 * - decoding: set by lavc
1556 uint16_t *intra_matrix;
1559 * custom inter quantization matrix
1560 * - encoding: set by user, can be NULL
1561 * - decoding: set by lavc
1563 uint16_t *inter_matrix;
1566 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1567 * this is used to workaround some encoder bugs
1568 * - encoding: unused
1569 * - decoding: set by user, will be converted to upper case by lavc during init
1571 unsigned int stream_codec_tag;
1574 * scene change detection threshold.
1575 * 0 is default, larger means fewer detected scene changes
1576 * - encoding: set by user.
1577 * - decoding: unused
1579 int scenechange_threshold;
1582 * minimum lagrange multipler
1583 * - encoding: set by user.
1584 * - decoding: unused
1589 * maximum lagrange multipler
1590 * - encoding: set by user.
1591 * - decoding: unused
1596 * Palette control structure
1597 * - encoding: ??? (no palette-enabled encoder yet)
1598 * - decoding: set by user.
1600 struct AVPaletteControl *palctrl;
1603 * noise reduction strength
1604 * - encoding: set by user.
1605 * - decoding: unused
1607 int noise_reduction;
1610 * called at the beginning of a frame to get cr buffer for it.
1611 * buffer type (size, hints) must be the same. lavc won't check it.
1612 * lavc will pass previous buffer in pic, function should return
1613 * same buffer or new buffer with old frame "painted" into it.
1614 * if pic.data[0] == NULL must behave like get_buffer().
1615 * - encoding: unused
1616 * - decoding: set by lavc, user can override
1618 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1621 * number of bits which should be loaded into the rc buffer before decoding starts
1622 * - encoding: set by user.
1623 * - decoding: unused
1625 int rc_initial_buffer_occupancy;
1629 * - encoding: set by user.
1630 * - decoding: unused
1632 int inter_threshold;
1636 * - encoding: set by user.
1637 * - decoding: set by user.
1642 * simulates errors in the bitstream to test error concealment.
1643 * - encoding: set by user.
1644 * - decoding: unused.
1649 * MP3 antialias algorithm, see FF_AA_* below.
1650 * - encoding: unused
1651 * - decoding: set by user
1654 #define FF_AA_AUTO 0
1655 #define FF_AA_FASTINT 1 //not implemented yet
1657 #define FF_AA_FLOAT 3
1659 * Quantizer noise shaping.
1660 * - encoding: set by user
1661 * - decoding: unused
1663 int quantizer_noise_shaping;
1667 * is used to decide how many independant tasks should be passed to execute()
1668 * - encoding: set by user
1669 * - decoding: set by user
1674 * the codec may call this to execute several independant things. it will return only after
1675 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1676 * default implementation will execute the parts serially
1677 * @param count the number of things to execute
1678 * - encoding: set by lavc, user can override
1679 * - decoding: set by lavc, user can override
1681 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1685 * can be used by execute() to store some per AVCodecContext stuff.
1686 * - encoding: set by execute()
1687 * - decoding: set by execute()
1689 void *thread_opaque;
1692 * Motion estimation threshold. under which no motion estimation is
1693 * performed, but instead the user specified motion vectors are used
1695 * - encoding: set by user
1696 * - decoding: unused
1701 * Macroblock threshold. under which the user specified macroblock types will be used
1702 * - encoding: set by user
1703 * - decoding: unused
1708 * precision of the intra dc coefficient - 8.
1709 * - encoding: set by user
1710 * - decoding: unused
1712 int intra_dc_precision;
1715 * noise vs. sse weight for the nsse comparsion function.
1716 * - encoding: set by user
1717 * - decoding: unused
1722 * number of macroblock rows at the top which are skipped.
1723 * - encoding: unused
1724 * - decoding: set by user
1729 * number of macroblock rows at the bottom which are skipped.
1730 * - encoding: unused
1731 * - decoding: set by user
1737 * - encoding: set by user
1738 * - decoding: set by lavc
1741 #define FF_PROFILE_UNKNOWN -99
1745 * - encoding: set by user
1746 * - decoding: set by lavc
1749 #define FF_LEVEL_UNKNOWN -99
1752 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1753 * - encoding: unused
1754 * - decoding: set by user
1759 * bitsream width / height. may be different from width/height if lowres
1760 * or other things are used
1761 * - encoding: unused
1762 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1764 int coded_width, coded_height;
1767 * frame skip threshold
1768 * - encoding: set by user
1769 * - decoding: unused
1771 int frame_skip_threshold;
1775 * - encoding: set by user
1776 * - decoding: unused
1778 int frame_skip_factor;
1781 * frame skip exponent
1782 * - encoding: set by user
1783 * - decoding: unused
1788 * frame skip comparission function
1789 * - encoding: set by user.
1790 * - decoding: unused
1795 * border processing masking. raises the quantizer for mbs on the borders
1797 * - encoding: set by user
1798 * - decoding: unused
1800 float border_masking;
1803 * minimum MB lagrange multipler.
1804 * - encoding: set by user.
1805 * - decoding: unused
1810 * maximum MB lagrange multipler.
1811 * - encoding: set by user.
1812 * - decoding: unused
1818 * - encoding: set by user.
1819 * - decoding: unused
1821 int me_penalty_compensation;
1825 * - encoding: unused
1826 * - decoding: set by user.
1828 enum AVDiscard skip_loop_filter;
1832 * - encoding: unused
1833 * - decoding: set by user.
1835 enum AVDiscard skip_idct;
1839 * - encoding: unused
1840 * - decoding: set by user.
1842 enum AVDiscard skip_frame;
1849 typedef struct AVOption {
1850 /** options' name */
1851 const char *name; /* if name is NULL, it indicates a link to next */
1852 /** short English text help or const struct AVOption* subpointer */
1853 const char *help; // const struct AVOption* sub;
1854 /** offset to context structure where the parsed value should be stored */
1856 /** options' type */
1858 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1859 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1860 #define FF_OPT_TYPE_INT 3 ///< integer
1861 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1862 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1863 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1864 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1865 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1866 /** min value (min == max -> no limits) */
1868 /** maximum value for double/int */
1870 /** default boo [0,1]l/double/int value */
1873 * default string value (with optional semicolon delimited extra option-list
1874 * i.e. option1;option2;option3
1875 * defval might select other then first argument as default
1878 #define FF_OPT_MAX_DEPTH 10
1884 typedef struct AVCodec {
1886 enum CodecType type;
1889 int (*init)(AVCodecContext *);
1890 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1891 int (*close)(AVCodecContext *);
1892 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1893 uint8_t *buf, int buf_size);
1895 void *dummy; // FIXME remove next time we break binary compatibility
1896 struct AVCodec *next;
1897 void (*flush)(AVCodecContext *);
1898 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1899 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1903 * four components are given, that's all.
1904 * the last component is alpha
1906 typedef struct AVPicture {
1908 int linesize[4]; ///< number of bytes per line
1913 * This structure defines a method for communicating palette changes
1914 * between and demuxer and a decoder.
1916 #define AVPALETTE_SIZE 1024
1917 #define AVPALETTE_COUNT 256
1918 typedef struct AVPaletteControl {
1920 /* demuxer sets this to 1 to indicate the palette has changed;
1921 * decoder resets to 0 */
1922 int palette_changed;
1924 /* 4-byte ARGB palette entries, stored in native byte order; note that
1925 * the individual palette components should be on a 8-bit scale; if
1926 * the palette data comes from a IBM VGA native format, the component
1927 * data is probably 6 bits in size and needs to be scaled */
1928 unsigned int palette[AVPALETTE_COUNT];
1932 typedef struct AVSubtitle {
1933 uint16_t format; /* 0 = graphics */
1939 uint32_t start_display_time; /* relative to packet pts, in ms */
1940 uint32_t end_display_time; /* relative to packet pts, in ms */
1942 uint32_t *rgba_palette;
1946 extern AVCodec ac3_encoder;
1947 extern AVCodec mp2_encoder;
1948 extern AVCodec mp3lame_encoder;
1949 extern AVCodec oggvorbis_encoder;
1950 extern AVCodec oggtheora_encoder;
1951 extern AVCodec faac_encoder;
1952 extern AVCodec xvid_encoder;
1953 extern AVCodec mpeg1video_encoder;
1954 extern AVCodec mpeg2video_encoder;
1955 extern AVCodec h261_encoder;
1956 extern AVCodec h263_encoder;
1957 extern AVCodec h263p_encoder;
1958 extern AVCodec flv_encoder;
1959 extern AVCodec rv10_encoder;
1960 extern AVCodec rv20_encoder;
1961 extern AVCodec dvvideo_encoder;
1962 extern AVCodec mjpeg_encoder;
1963 extern AVCodec ljpeg_encoder;
1964 extern AVCodec png_encoder;
1965 extern AVCodec ppm_encoder;
1966 extern AVCodec pgm_encoder;
1967 extern AVCodec pgmyuv_encoder;
1968 extern AVCodec pbm_encoder;
1969 extern AVCodec pam_encoder;
1970 extern AVCodec mpeg4_encoder;
1971 extern AVCodec msmpeg4v1_encoder;
1972 extern AVCodec msmpeg4v2_encoder;
1973 extern AVCodec msmpeg4v3_encoder;
1974 extern AVCodec wmv1_encoder;
1975 extern AVCodec wmv2_encoder;
1976 extern AVCodec huffyuv_encoder;
1977 extern AVCodec ffvhuff_encoder;
1978 extern AVCodec h264_encoder;
1979 extern AVCodec asv1_encoder;
1980 extern AVCodec asv2_encoder;
1981 extern AVCodec vcr1_encoder;
1982 extern AVCodec ffv1_encoder;
1983 extern AVCodec snow_encoder;
1984 extern AVCodec mdec_encoder;
1985 extern AVCodec zlib_encoder;
1986 extern AVCodec sonic_encoder;
1987 extern AVCodec sonic_ls_encoder;
1988 extern AVCodec svq1_encoder;
1989 extern AVCodec x264_encoder;
1991 extern AVCodec h263_decoder;
1992 extern AVCodec h261_decoder;
1993 extern AVCodec mpeg4_decoder;
1994 extern AVCodec msmpeg4v1_decoder;
1995 extern AVCodec msmpeg4v2_decoder;
1996 extern AVCodec msmpeg4v3_decoder;
1997 extern AVCodec wmv1_decoder;
1998 extern AVCodec wmv2_decoder;
1999 extern AVCodec vc9_decoder;
2000 extern AVCodec wmv3_decoder;
2001 extern AVCodec mpeg1video_decoder;
2002 extern AVCodec mpeg2video_decoder;
2003 extern AVCodec mpegvideo_decoder;
2004 extern AVCodec mpeg_xvmc_decoder;
2005 extern AVCodec h263i_decoder;
2006 extern AVCodec flv_decoder;
2007 extern AVCodec rv10_decoder;
2008 extern AVCodec rv20_decoder;
2009 extern AVCodec rv30_decoder;
2010 extern AVCodec rv40_decoder;
2011 extern AVCodec svq1_decoder;
2012 extern AVCodec svq3_decoder;
2013 extern AVCodec dvvideo_decoder;
2014 extern AVCodec wmav1_decoder;
2015 extern AVCodec wmav2_decoder;
2016 extern AVCodec mjpeg_decoder;
2017 extern AVCodec mjpegb_decoder;
2018 extern AVCodec sp5x_decoder;
2019 extern AVCodec png_decoder;
2020 extern AVCodec mp2_decoder;
2021 extern AVCodec mp3_decoder;
2022 extern AVCodec mp3adu_decoder;
2023 extern AVCodec mp3on4_decoder;
2024 extern AVCodec mace3_decoder;
2025 extern AVCodec mace6_decoder;
2026 extern AVCodec huffyuv_decoder;
2027 extern AVCodec ffvhuff_decoder;
2028 extern AVCodec oggvorbis_decoder;
2029 extern AVCodec oggtheora_decoder;
2030 extern AVCodec cyuv_decoder;
2031 extern AVCodec h264_decoder;
2032 extern AVCodec indeo3_decoder;
2033 extern AVCodec vp3_decoder;
2034 extern AVCodec theora_decoder;
2035 extern AVCodec amr_nb_decoder;
2036 extern AVCodec amr_nb_encoder;
2037 extern AVCodec amr_wb_encoder;
2038 extern AVCodec amr_wb_decoder;
2039 extern AVCodec aac_decoder;
2040 extern AVCodec mpeg4aac_decoder;
2041 extern AVCodec asv1_decoder;
2042 extern AVCodec asv2_decoder;
2043 extern AVCodec vcr1_decoder;
2044 extern AVCodec cljr_decoder;
2045 extern AVCodec ffv1_decoder;
2046 extern AVCodec snow_decoder;
2047 extern AVCodec fourxm_decoder;
2048 extern AVCodec mdec_decoder;
2049 extern AVCodec roq_decoder;
2050 extern AVCodec interplay_video_decoder;
2051 extern AVCodec xan_wc3_decoder;
2052 extern AVCodec rpza_decoder;
2053 extern AVCodec cinepak_decoder;
2054 extern AVCodec msrle_decoder;
2055 extern AVCodec msvideo1_decoder;
2056 extern AVCodec vqa_decoder;
2057 extern AVCodec idcin_decoder;
2058 extern AVCodec eightbps_decoder;
2059 extern AVCodec smc_decoder;
2060 extern AVCodec flic_decoder;
2061 extern AVCodec vmdvideo_decoder;
2062 extern AVCodec vmdaudio_decoder;
2063 extern AVCodec truemotion1_decoder;
2064 extern AVCodec mszh_decoder;
2065 extern AVCodec zlib_decoder;
2066 extern AVCodec ra_144_decoder;
2067 extern AVCodec ra_288_decoder;
2068 extern AVCodec roq_dpcm_decoder;
2069 extern AVCodec interplay_dpcm_decoder;
2070 extern AVCodec xan_dpcm_decoder;
2071 extern AVCodec sol_dpcm_decoder;
2072 extern AVCodec sonic_decoder;
2073 extern AVCodec qtrle_decoder;
2074 extern AVCodec flac_decoder;
2075 extern AVCodec tscc_decoder;
2076 extern AVCodec ulti_decoder;
2077 extern AVCodec qdraw_decoder;
2078 extern AVCodec xl_decoder;
2079 extern AVCodec qpeg_decoder;
2080 extern AVCodec shorten_decoder;
2081 extern AVCodec loco_decoder;
2082 extern AVCodec wnv1_decoder;
2083 extern AVCodec aasc_decoder;
2084 extern AVCodec alac_decoder;
2085 extern AVCodec ws_snd1_decoder;
2086 extern AVCodec indeo2_decoder;
2087 extern AVCodec vorbis_decoder;
2088 extern AVCodec fraps_decoder;
2089 extern AVCodec libgsm_encoder;
2090 extern AVCodec libgsm_decoder;
2093 #define PCM_CODEC(id, name) \
2094 extern AVCodec name ## _decoder; \
2095 extern AVCodec name ## _encoder
2097 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
2098 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
2099 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
2100 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
2101 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
2102 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
2103 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
2104 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
2108 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
2109 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
2110 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
2111 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
2112 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
2113 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
2114 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
2115 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
2116 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
2117 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
2118 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
2119 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
2120 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
2121 PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
2125 /* dummy raw video codec */
2126 extern AVCodec rawvideo_encoder;
2127 extern AVCodec rawvideo_decoder;
2129 /* the following codecs use external GPL libs */
2130 extern AVCodec ac3_decoder;
2131 extern AVCodec dts_decoder;
2134 extern AVCodec dvdsub_decoder;
2135 extern AVCodec dvbsub_encoder;
2139 struct ReSampleContext;
2140 struct AVResampleContext;
2142 typedef struct ReSampleContext ReSampleContext;
2144 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
2145 int output_rate, int input_rate);
2146 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
2147 void audio_resample_close(ReSampleContext *s);
2149 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
2150 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2151 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2152 void av_resample_close(struct AVResampleContext *c);
2154 /* YUV420 format is assumed ! */
2156 struct ImgReSampleContext;
2158 typedef struct ImgReSampleContext ImgReSampleContext;
2160 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2161 int input_width, int input_height);
2163 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2164 int iwidth, int iheight,
2165 int topBand, int bottomBand,
2166 int leftBand, int rightBand,
2167 int padtop, int padbottom,
2168 int padleft, int padright);
2171 void img_resample(ImgReSampleContext *s,
2172 AVPicture *output, const AVPicture *input);
2174 void img_resample_close(ImgReSampleContext *s);
2177 * Allocate memory for a picture. Call avpicture_free to free it.
2179 * @param picture the picture to be filled in.
2180 * @param pix_fmt the format of the picture.
2181 * @param width the width of the picture.
2182 * @param height the height of the picture.
2183 * @return 0 if successful, -1 if not.
2185 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2187 /* Free a picture previously allocated by avpicture_alloc. */
2188 void avpicture_free(AVPicture *picture);
2190 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2191 int pix_fmt, int width, int height);
2192 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2193 unsigned char *dest, int dest_size);
2194 int avpicture_get_size(int pix_fmt, int width, int height);
2195 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2196 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2197 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2198 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2199 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2201 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2202 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2203 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2204 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2205 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2206 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2208 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2210 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2211 int has_alpha, int *loss_ptr);
2213 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2214 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2215 int img_get_alpha_info(const AVPicture *src,
2216 int pix_fmt, int width, int height);
2218 /* convert among pixel formats */
2219 int img_convert(AVPicture *dst, int dst_pix_fmt,
2220 const AVPicture *src, int pix_fmt,
2221 int width, int height);
2223 /* deinterlace a picture */
2224 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2225 int pix_fmt, int width, int height);
2227 /* external high level API */
2229 extern AVCodec *first_avcodec;
2231 /* returns LIBAVCODEC_VERSION_INT constant */
2232 unsigned avcodec_version(void);
2233 /* returns LIBAVCODEC_BUILD constant */
2234 unsigned avcodec_build(void);
2235 void avcodec_init(void);
2237 void register_avcodec(AVCodec *format);
2238 AVCodec *avcodec_find_encoder(enum CodecID id);
2239 AVCodec *avcodec_find_encoder_by_name(const char *name);
2240 AVCodec *avcodec_find_decoder(enum CodecID id);
2241 AVCodec *avcodec_find_decoder_by_name(const char *name);
2242 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2244 void avcodec_get_context_defaults(AVCodecContext *s);
2245 AVCodecContext *avcodec_alloc_context(void);
2246 void avcodec_get_frame_defaults(AVFrame *pic);
2247 AVFrame *avcodec_alloc_frame(void);
2249 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2250 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2251 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2252 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2253 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
2254 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2256 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2257 void avcodec_thread_free(AVCodecContext *s);
2258 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2259 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2260 //FIXME func typedef
2263 * opens / inits the AVCodecContext.
2266 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2268 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2269 int *frame_size_ptr,
2270 uint8_t *buf, int buf_size);
2271 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2272 int *got_picture_ptr,
2273 uint8_t *buf, int buf_size);
2274 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
2276 const uint8_t *buf, int buf_size);
2277 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2279 uint8_t *buf, int buf_size);
2280 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2281 const short *samples);
2282 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2283 const AVFrame *pict);
2284 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2285 const AVSubtitle *sub);
2287 int avcodec_close(AVCodecContext *avctx);
2289 void avcodec_register_all(void);
2291 void avcodec_flush_buffers(AVCodecContext *avctx);
2293 void avcodec_default_free_buffers(AVCodecContext *s);
2295 /* misc usefull functions */
2298 * returns a single letter to describe the picture type
2300 char av_get_pict_type_char(int pict_type);
2303 * reduce a fraction.
2304 * this is usefull for framerate calculations
2305 * @param max the maximum allowed for dst_nom & dst_den
2306 * @return 1 if exact, 0 otherwise
2308 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2311 * rescale a 64bit integer with rounding to nearest.
2312 * a simple a*b/c isn't possible as it can overflow
2314 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2317 * rescale a 64bit integer with specified rounding.
2318 * a simple a*b/c isn't possible as it can overflow
2320 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2323 * rescale a 64bit integer by 2 rational numbers.
2325 int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq);
2328 typedef struct AVCodecParserContext {
2330 struct AVCodecParser *parser;
2331 int64_t frame_offset; /* offset of the current frame */
2332 int64_t cur_offset; /* current offset
2333 (incremented by each av_parser_parse()) */
2334 int64_t last_frame_offset; /* offset of the last frame */
2336 int pict_type; /* XXX: put it back in AVCodecContext */
2337 int repeat_pict; /* XXX: put it back in AVCodecContext */
2338 int64_t pts; /* pts of the current frame */
2339 int64_t dts; /* dts of the current frame */
2344 int fetch_timestamp;
2346 #define AV_PARSER_PTS_NB 4
2347 int cur_frame_start_index;
2348 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2349 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2350 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2351 } AVCodecParserContext;
2353 typedef struct AVCodecParser {
2354 int codec_ids[5]; /* several codec IDs are permitted */
2356 int (*parser_init)(AVCodecParserContext *s);
2357 int (*parser_parse)(AVCodecParserContext *s,
2358 AVCodecContext *avctx,
2359 uint8_t **poutbuf, int *poutbuf_size,
2360 const uint8_t *buf, int buf_size);
2361 void (*parser_close)(AVCodecParserContext *s);
2362 int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
2363 struct AVCodecParser *next;
2366 extern AVCodecParser *av_first_parser;
2368 void av_register_codec_parser(AVCodecParser *parser);
2369 AVCodecParserContext *av_parser_init(int codec_id);
2370 int av_parser_parse(AVCodecParserContext *s,
2371 AVCodecContext *avctx,
2372 uint8_t **poutbuf, int *poutbuf_size,
2373 const uint8_t *buf, int buf_size,
2374 int64_t pts, int64_t dts);
2375 int av_parser_change(AVCodecParserContext *s,
2376 AVCodecContext *avctx,
2377 uint8_t **poutbuf, int *poutbuf_size,
2378 const uint8_t *buf, int buf_size, int keyframe);
2379 void av_parser_close(AVCodecParserContext *s);
2381 extern AVCodecParser mpegvideo_parser;
2382 extern AVCodecParser mpeg4video_parser;
2383 extern AVCodecParser h261_parser;
2384 extern AVCodecParser h263_parser;
2385 extern AVCodecParser h264_parser;
2386 extern AVCodecParser mjpeg_parser;
2387 extern AVCodecParser pnm_parser;
2388 extern AVCodecParser mpegaudio_parser;
2389 extern AVCodecParser ac3_parser;
2390 extern AVCodecParser dvdsub_parser;
2393 void *av_malloc(unsigned int size);
2394 void *av_mallocz(unsigned int size);
2395 void *av_realloc(void *ptr, unsigned int size);
2396 void av_free(void *ptr);
2397 char *av_strdup(const char *s);
2398 void av_freep(void *ptr);
2399 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2400 /* for static data only */
2401 /* call av_free_static to release all staticaly allocated tables */
2402 void av_free_static(void);
2403 void *av_mallocz_static(unsigned int size);
2404 void *av_realloc_static(void *ptr, unsigned int size);
2406 /* add by bero : in adx.c */
2407 int is_adx(const unsigned char *buf,size_t bufsize);
2409 void img_copy(AVPicture *dst, const AVPicture *src,
2410 int pix_fmt, int width, int height);
2416 #define AV_LOG_QUIET -1
2417 #define AV_LOG_ERROR 0
2418 #define AV_LOG_INFO 1
2419 #define AV_LOG_DEBUG 2
2422 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2424 extern void av_log(void*, int level, const char *fmt, ...);
2427 extern void av_vlog(void*, int level, const char *fmt, va_list);
2428 extern int av_log_get_level(void);
2429 extern void av_log_set_level(int);
2430 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2433 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2434 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2435 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2436 (((uint8_t*)(x))[1] << 16) | \
2437 (((uint8_t*)(x))[2] << 8) | \
2439 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2440 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2441 (((uint8_t*)(x))[2] << 16) | \
2442 (((uint8_t*)(x))[1] << 8) | \
2446 extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
2452 #endif /* AVCODEC_H */