16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "0.4.9-pre1"
20 #define LIBAVCODEC_BUILD 4725
22 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23 #define LIBAVCODEC_VERSION FFMPEG_VERSION
25 #define AV_STRINGIFY(s) AV_TOSTRING(s)
26 #define AV_TOSTRING(s) #s
27 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
29 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
30 #define AV_TIME_BASE 1000000
35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
36 CODEC_ID_MPEG2VIDEO_XVMC,
42 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
83 CODEC_ID_INTERPLAY_VIDEO,
108 /* various pcm "codecs" */
118 /* various adpcm codecs */
119 CODEC_ID_ADPCM_IMA_QT,
120 CODEC_ID_ADPCM_IMA_WAV,
121 CODEC_ID_ADPCM_IMA_DK3,
122 CODEC_ID_ADPCM_IMA_DK4,
123 CODEC_ID_ADPCM_IMA_WS,
124 CODEC_ID_ADPCM_IMA_SMJPEG,
137 /* RealAudio codecs*/
141 /* various DPCM codecs */
143 CODEC_ID_INTERPLAY_DPCM,
149 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
150 stream (only used by libavformat) */
156 /* CODEC_ID_MP3LAME is absolete */
157 #define CODEC_ID_MP3LAME CODEC_ID_MP3
160 CODEC_TYPE_UNKNOWN = -1,
167 * Pixel format. Notes:
169 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
170 * color is put together as:
171 * (A << 24) | (R << 16) | (G << 8) | B
172 * This is stored as BGRA on little endian CPU architectures and ARGB on
175 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
176 * image data is stored in AVFrame.data[0]. The palette is transported in
177 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
178 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
179 * also endian-specific). Note also that the individual RGB palette
180 * components stored in AVFrame.data[1] should be in the range 0..255.
181 * This is important as many custom PAL8 video codecs that were designed
182 * to run on the IBM VGA graphics adapter use 6-bit palette components.
185 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
186 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
187 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
188 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
189 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
190 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
191 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
192 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
193 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
194 PIX_FMT_RGB565, ///< always stored in cpu endianness
195 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
197 PIX_FMT_MONOWHITE, ///< 0 is white
198 PIX_FMT_MONOBLACK, ///< 0 is black
199 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
200 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
201 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
202 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
203 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
204 PIX_FMT_XVMC_MPEG2_IDCT,
205 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
209 /* currently unused, may be used if 24/32 bits samples ever supported */
211 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
215 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
218 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
219 * this is mainly needed because some optimized bitstream readers read
220 * 32 or 64 bit at once and could read over the end<br>
221 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
222 * MPEG bitstreams could cause overread and segfault
224 #define FF_INPUT_BUFFER_PADDING_SIZE 8
226 /* motion estimation type, EPZS by default */
237 AV_ROUND_ZERO = 0, ///< round toward zero
238 AV_ROUND_INF = 1, ///< round away from zero
239 AV_ROUND_DOWN = 2, ///< round toward -infinity
240 AV_ROUND_UP = 3, ///< round toward +infinity
241 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
244 typedef struct RcOverride{
247 int qscale; // if this is 0 then quality_factor will be used instead
248 float quality_factor;
251 /* only for ME compatiblity with old apps */
252 extern int motion_estimation_method;
254 #define FF_MAX_B_FRAMES 8
257 these flags can be passed in AVCodecContext.flags before initing
258 Note: note not everything is supported yet
261 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
262 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
263 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
264 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
265 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
266 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
267 /* parent program gurantees that the input for b-frame containing streams is not written to
268 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
269 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
270 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
271 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
272 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
273 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
274 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
275 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
276 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
277 of only at frame boundaries */
278 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
279 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
280 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
281 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
282 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
283 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
284 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
285 /* Fx : Flag for h263+ extra options */
286 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
287 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
288 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
289 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
290 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
291 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
292 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
293 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
294 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
295 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
296 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
297 #define CODEC_FLAG_CLOSED_GOP 0x80000000
298 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
299 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
301 /* Unsupported options :
302 * Syntax Arithmetic coding (SAC)
303 * Reference Picture Selection
304 * Independant Segment Decoding */
306 /* codec capabilities */
308 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
310 * Codec uses get_buffer() for allocating buffers.
311 * direct rendering method 1
313 #define CODEC_CAP_DR1 0x0002
314 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
316 #define CODEC_CAP_PARSE_ONLY 0x0004
317 #define CODEC_CAP_TRUNCATED 0x0008
318 /* codec can export data for HW decoding (XvMC) */
319 #define CODEC_CAP_HWACCEL 0x0010
320 /** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
321 #define CODEC_CAP_DELAY 0x0020
323 //the following defines might change, so dont expect compatibility if u use them
324 #define MB_TYPE_INTRA4x4 0x0001
325 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
326 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
327 #define MB_TYPE_16x16 0x0008
328 #define MB_TYPE_16x8 0x0010
329 #define MB_TYPE_8x16 0x0020
330 #define MB_TYPE_8x8 0x0040
331 #define MB_TYPE_INTERLACED 0x0080
332 #define MB_TYPE_DIRECT2 0x0100 //FIXME
333 #define MB_TYPE_ACPRED 0x0200
334 #define MB_TYPE_GMC 0x0400
335 #define MB_TYPE_SKIP 0x0800
336 #define MB_TYPE_P0L0 0x1000
337 #define MB_TYPE_P1L0 0x2000
338 #define MB_TYPE_P0L1 0x4000
339 #define MB_TYPE_P1L1 0x8000
340 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
341 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
342 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
343 #define MB_TYPE_QUANT 0x00010000
344 #define MB_TYPE_CBP 0x00020000
345 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
349 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
351 typedef struct AVPanScan{
354 * - encoding: set by user.
355 * - decoding: set by lavc
360 * width and height in 1/16 pel
361 * - encoding: set by user.
362 * - decoding: set by lavc
368 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
369 * - encoding: set by user.
370 * - decoding: set by lavc
372 int16_t position[3][2];
375 #define FF_COMMON_FRAME \
377 * pointer to the picture planes.\
378 * this might be different from the first allocated byte\
385 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
386 * this isnt used by lavc unless the default get/release_buffer() is used\
392 * 1 -> keyframe, 0-> not\
393 * - encoding: set by lavc\
394 * - decoding: set by lavc\
399 * picture type of the frame, see ?_TYPE below.\
400 * - encoding: set by lavc for coded_picture (and set by user for input)\
401 * - decoding: set by lavc\
406 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
407 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
408 * - encoding: MUST be set by user\
409 * - decoding: set by lavc\
414 * picture number in bitstream order.\
415 * - encoding: set by\
416 * - decoding: set by lavc\
418 int coded_picture_number;\
420 * picture number in display order.\
421 * - encoding: set by\
422 * - decoding: set by lavc\
424 int display_picture_number;\
427 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
428 * - encoding: set by lavc for coded_picture (and set by user for input)\
429 * - decoding: set by lavc\
434 * buffer age (1->was last buffer and dint change, 2->..., ...).\
435 * set to INT_MAX if the buffer has not been used yet \
436 * - encoding: unused\
437 * - decoding: MUST be set by get_buffer()\
442 * is this picture used as reference\
443 * - encoding: unused\
444 * - decoding: set by lavc (before get_buffer() call))\
450 * - encoding: unused\
451 * - decoding: set by lavc\
453 int8_t *qscale_table;\
456 * - encoding: unused\
457 * - decoding: set by lavc\
462 * mbskip_table[mb]>=1 if MB didnt change\
463 * stride= mb_width = (width+15)>>4\
464 * - encoding: unused\
465 * - decoding: set by lavc\
467 uint8_t *mbskip_table;\
470 * Motion vector table\
471 * - encoding: set by user\
472 * - decoding: set by lavc\
474 int16_t (*motion_val[2])[2];\
477 * Macroblock type table\
478 * mb_type_base + mb_width + 2\
479 * - encoding: set by user\
480 * - decoding: set by lavc\
485 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
486 * - encoding: unused\
487 * - decoding: set by lavc\
489 uint8_t motion_subsample_log2;\
492 * for some private data of the user\
493 * - encoding: unused\
494 * - decoding: set by user\
500 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
501 * - decoding: unused\
506 * type of the buffer (to keep track of who has to dealloc data[*])\
507 * - encoding: set by the one who allocs it\
508 * - decoding: set by the one who allocs it\
509 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
514 * when decoding, this signal how much the picture must be delayed.\
515 * extra_delay = repeat_pict / (2*fps)\
516 * - encoding: unused\
517 * - decoding: set by lavc\
527 * The content of the picture is interlaced.\
528 * - encoding: set by user\
529 * - decoding: set by lavc (default 0)\
531 int interlaced_frame;\
534 * if the content is interlaced, is top field displayed first.\
535 * - encoding: set by user\
536 * - decoding: set by lavc\
538 int top_field_first;\
542 * - encoding: set by user\
543 * - decoding: set by lavc\
545 AVPanScan *pan_scan;\
548 * tell user application that palette has changed from previous frame.\
549 * - encoding: ??? (no palette-enabled encoder yet)\
550 * - decoding: set by lavc (default 0)\
552 int palette_has_changed;\
555 * Codec suggestion on buffer type if != 0\
556 * - encoding: unused\
557 * - decoding: set by lavc (before get_buffer() call))\
563 * - encoding: unused\
564 * - decoding: set by lavc\
569 * Motion referece frame index\
570 * - encoding: set by user\
571 * - decoding: set by lavc\
573 int8_t *ref_index[2];
575 #define FF_QSCALE_TYPE_MPEG1 0
576 #define FF_QSCALE_TYPE_MPEG2 1
578 #define FF_BUFFER_TYPE_INTERNAL 1
579 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
580 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
581 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
584 #define FF_I_TYPE 1 // Intra
585 #define FF_P_TYPE 2 // Predicted
586 #define FF_B_TYPE 3 // Bi-dir predicted
587 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
591 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
592 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
593 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
594 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
599 typedef struct AVFrame {
603 #define DEFAULT_FRAME_RATE_BASE 1001000
608 typedef struct AVCLASS AVClass;
610 const char* class_name;
611 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
612 or AVFormatContext, which begin with an AVClass.
613 Needed because av_log is in libavcodec and has no visibility
614 of AVIn/OutputFormat */
618 * main external api structure.
620 typedef struct AVCodecContext {
622 * Info on struct for av_log
623 * - set by avcodec_alloc_context
627 * the average bitrate.
628 * - encoding: set by user. unused for constant quantizer encoding
629 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
634 * number of bits the bitstream is allowed to diverge from the reference.
635 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
636 * - encoding: set by user. unused for constant quantizer encoding
639 int bit_rate_tolerance;
643 * - encoding: set by user.
644 * - decoding: set by user.
649 * some codecs needs additionnal format info. It is stored here
650 * - encoding: set by user.
651 * - decoding: set by lavc. (FIXME is this ok?)
656 * motion estimation algorithm used for video coding.
657 * - encoding: MUST be set by user.
663 * some codecs need / can use extra-data like huffman tables.
664 * mjpeg: huffman tables
665 * rv10: additional flags
666 * mpeg4: global headers (they can be in the bitstream or here)
667 * - encoding: set/allocated/freed by lavc.
668 * - decoding: set/allocated/freed by user.
675 * frames per sec multiplied by frame_rate_base.
676 * for variable fps this is the precission, so if the timestamps
677 * can be specified in msec precssion then this is 1000*frame_rate_base
678 * - encoding: MUST be set by user
679 * - decoding: set by lavc. 0 or the frame_rate if available
684 * picture width / height.
685 * - encoding: MUST be set by user.
686 * - decoding: set by lavc.
687 * Note, for compatibility its possible to set this instead of
688 * coded_width/height before decoding
692 #define FF_ASPECT_EXTENDED 15
695 * the number of pictures in a group of pitures, or 0 for intra_only.
696 * - encoding: set by user.
702 * pixel format, see PIX_FMT_xxx.
703 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
704 * conversion is in order. This only works for
705 * codecs with one supported pix_fmt, we should
706 * do something for a generic case as well.
707 * - decoding: set by lavc.
709 enum PixelFormat pix_fmt;
712 * Frame rate emulation. If not zero lower layer (i.e. format handler)
713 * has to read frames at native frame rate.
714 * - encoding: set by user.
715 * - decoding: unused.
720 * if non NULL, 'draw_horiz_band' is called by the libavcodec
721 * decoder to draw an horizontal band. It improve cache usage. Not
722 * all codecs can do that. You must check the codec capabilities
725 * - decoding: set by user.
726 * @param height the height of the slice
727 * @param y the y position of the slice
728 * @param type 1->top field, 2->bottom field, 3->frame
729 * @param offset offset into the AVFrame.data from which the slice should be read
731 void (*draw_horiz_band)(struct AVCodecContext *s,
732 const AVFrame *src, int offset[4],
733 int y, int type, int height);
736 int sample_rate; ///< samples per sec
738 int sample_fmt; ///< sample format, currenly unused
740 /* the following data should not be initialized */
741 int frame_size; ///< in samples, initialized when calling 'init'
742 int frame_number; ///< audio or video frame number
743 int real_pict_num; ///< returns the real picture number of previous encoded frame
746 * number of frames the decoded output will be delayed relative to
748 * - encoding: set by lavc.
753 /* - encoding parameters */
754 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
755 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
759 * - encoding: set by user.
766 * - encoding: set by user.
772 * maximum quantizer difference etween frames.
773 * - encoding: set by user.
779 * maximum number of b frames between non b frames.
780 * note: the output will be delayed by max_b_frames+1 relative to the input
781 * - encoding: set by user.
787 * qscale factor between ip and b frames.
788 * - encoding: set by user.
791 float b_quant_factor;
793 /** obsolete FIXME remove */
795 int b_frame_strategy;
800 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
804 struct AVCodec *codec;
808 /* unused, FIXME remove*/
811 int rtp_payload_size; /* The size of the RTP payload, the coder will */
812 /* do it's best to deliver a chunk with size */
813 /* below rtp_payload_size, the chunk will start */
814 /* with a start code on some codecs like H.263 */
815 /* This doesn't take account of any particular */
816 /* headers inside the transmited RTP payload */
819 /* The RTP callcack: This function is called */
820 /* every time the encoder as a packet to send */
821 /* Depends on the encoder if the data starts */
822 /* with a Start Code (it should) H.263 does */
823 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
825 /* statistics, used for 2-pass encoding */
836 * number of bits used for the previously encoded frame.
837 * - encoding: set by lavc
843 * private data of the user, can be used to carry app specific stuff.
844 * - encoding: set by user
845 * - decoding: set by user
850 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
851 enum CodecID codec_id; /* see CODEC_ID_xxx */
854 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
855 * this is used to workaround some encoder bugs
856 * - encoding: set by user, if not then the default based on codec_id will be used
857 * - decoding: set by user, will be converted to upper case by lavc during init
859 unsigned int codec_tag;
862 * workaround bugs in encoders which sometimes cannot be detected automatically.
864 * - decoding: set by user
867 #define FF_BUG_AUTODETECT 1 ///< autodetection
868 #define FF_BUG_OLD_MSMPEG4 2
869 #define FF_BUG_XVID_ILACE 4
870 #define FF_BUG_UMP4 8
871 #define FF_BUG_NO_PADDING 16
872 #define FF_BUG_AMV 32
873 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
874 #define FF_BUG_QPEL_CHROMA 64
875 #define FF_BUG_STD_QPEL 128
876 #define FF_BUG_QPEL_CHROMA2 256
877 #define FF_BUG_DIRECT_BLOCKSIZE 512
878 #define FF_BUG_EDGE 1024
879 #define FF_BUG_HPEL_CHROMA 2048
880 #define FF_BUG_DC_CLIP 4096
881 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
884 * luma single coeff elimination threshold.
885 * - encoding: set by user
888 int luma_elim_threshold;
891 * chroma single coeff elimination threshold.
892 * - encoding: set by user
895 int chroma_elim_threshold;
898 * strictly follow the std (MPEG4, ...).
899 * - encoding: set by user
902 int strict_std_compliance;
905 * qscale offset between ip and b frames.
906 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
907 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
908 * - encoding: set by user.
911 float b_quant_offset;
914 * error resilience higher values will detect more errors but may missdetect
915 * some more or less valid parts as errors.
917 * - decoding: set by user
919 int error_resilience;
920 #define FF_ER_CAREFULL 1
921 #define FF_ER_COMPLIANT 2
922 #define FF_ER_AGGRESSIVE 3
923 #define FF_ER_VERY_AGGRESSIVE 4
926 * called at the beginning of each frame to get a buffer for it.
927 * if pic.reference is set then the frame will be read later by lavc
928 * avcodec_align_dimensions() should be used to find the required width and
929 * height, as they normally need to be rounded up to the next multiple of 16
931 * - decoding: set by lavc, user can override
933 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
936 * called to release buffers which where allocated with get_buffer.
937 * a released buffer can be reused in get_buffer()
938 * pic.data[*] must be set to NULL
940 * - decoding: set by lavc, user can override
942 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
945 * if 1 the stream has a 1 frame delay during decoding.
946 * - encoding: set by lavc
947 * - decoding: set by lavc
951 int block_align; ///< used by some WAV based audio codecs
953 int parse_only; /* - decoding only: if true, only parsing is done
954 (function avcodec_parse_frame()). The frame
955 data is returned. Only MPEG codecs support this now. */
958 * 0-> h263 quant 1-> mpeg quant.
959 * - encoding: set by user.
965 * pass1 encoding statistics output buffer.
966 * - encoding: set by lavc
972 * pass2 encoding statistics input buffer.
973 * concatenated stuff from stats_out of pass1 should be placed here
974 * - encoding: allocated/set/freed by user
980 * ratecontrol qmin qmax limiting method.
981 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
982 * - encoding: set by user.
991 * ratecontrol override, see RcOverride.
992 * - encoding: allocated/set/freed by user.
995 RcOverride *rc_override;
996 int rc_override_count;
999 * rate control equation.
1000 * - encoding: set by user
1001 * - decoding: unused
1007 * - encoding: set by user.
1008 * - decoding: unused
1014 * - encoding: set by user.
1015 * - decoding: unused
1020 * decoder bitstream buffer size.
1021 * - encoding: set by user.
1022 * - decoding: unused
1025 float rc_buffer_aggressivity;
1028 * qscale factor between p and i frames.
1029 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1030 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1031 * - encoding: set by user.
1032 * - decoding: unused
1034 float i_quant_factor;
1037 * qscale offset between p and i frames.
1038 * - encoding: set by user.
1039 * - decoding: unused
1041 float i_quant_offset;
1044 * initial complexity for pass1 ratecontrol.
1045 * - encoding: set by user.
1046 * - decoding: unused
1048 float rc_initial_cplx;
1051 * dct algorithm, see FF_DCT_* below.
1052 * - encoding: set by user
1053 * - decoding: unused
1056 #define FF_DCT_AUTO 0
1057 #define FF_DCT_FASTINT 1
1058 #define FF_DCT_INT 2
1059 #define FF_DCT_MMX 3
1060 #define FF_DCT_MLIB 4
1061 #define FF_DCT_ALTIVEC 5
1062 #define FF_DCT_FAAN 6
1065 * luminance masking (0-> disabled).
1066 * - encoding: set by user
1067 * - decoding: unused
1072 * temporary complexity masking (0-> disabled).
1073 * - encoding: set by user
1074 * - decoding: unused
1076 float temporal_cplx_masking;
1079 * spatial complexity masking (0-> disabled).
1080 * - encoding: set by user
1081 * - decoding: unused
1083 float spatial_cplx_masking;
1086 * p block masking (0-> disabled).
1087 * - encoding: set by user
1088 * - decoding: unused
1093 * darkness masking (0-> disabled).
1094 * - encoding: set by user
1095 * - decoding: unused
1100 /* for binary compatibility */
1104 * idct algorithm, see FF_IDCT_* below.
1105 * - encoding: set by user
1106 * - decoding: set by user
1109 #define FF_IDCT_AUTO 0
1110 #define FF_IDCT_INT 1
1111 #define FF_IDCT_SIMPLE 2
1112 #define FF_IDCT_SIMPLEMMX 3
1113 #define FF_IDCT_LIBMPEG2MMX 4
1114 #define FF_IDCT_PS2 5
1115 #define FF_IDCT_MLIB 6
1116 #define FF_IDCT_ARM 7
1117 #define FF_IDCT_ALTIVEC 8
1118 #define FF_IDCT_SH4 9
1119 #define FF_IDCT_SIMPLEARM 10
1120 #define FF_IDCT_H264 11
1124 * - encoding: set by lavc
1125 * - decoding: set by user (or 0)
1129 * slice offsets in the frame in bytes.
1130 * - encoding: set/allocated by lavc
1131 * - decoding: set/allocated by user (or NULL)
1136 * error concealment flags.
1137 * - encoding: unused
1138 * - decoding: set by user
1140 int error_concealment;
1141 #define FF_EC_GUESS_MVS 1
1142 #define FF_EC_DEBLOCK 2
1145 * dsp_mask could be add used to disable unwanted CPU features
1146 * CPU features (i.e. MMX, SSE. ...)
1148 * with FORCE flag you may instead enable given CPU features
1149 * (Dangerous: usable in case of misdetection, improper usage however will
1150 * result into program crash)
1153 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1154 /* lower 16 bits - CPU features */
1156 #define FF_MM_MMX 0x0001 /* standard MMX */
1157 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1158 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1159 #define FF_MM_SSE 0x0008 /* SSE functions */
1160 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1161 #endif /* HAVE_MMX */
1164 * bits per sample/pixel from the demuxer (needed for huffyuv).
1165 * - encoding: set by lavc
1166 * - decoding: set by user
1168 int bits_per_sample;
1171 * prediction method (needed for huffyuv).
1172 * - encoding: set by user
1173 * - decoding: unused
1175 int prediction_method;
1176 #define FF_PRED_LEFT 0
1177 #define FF_PRED_PLANE 1
1178 #define FF_PRED_MEDIAN 2
1181 * sample aspect ratio (0 if unknown).
1182 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1183 * - encoding: set by user.
1184 * - decoding: set by lavc.
1186 AVRational sample_aspect_ratio;
1189 * the picture in the bitstream.
1190 * - encoding: set by lavc
1191 * - decoding: set by lavc
1193 AVFrame *coded_frame;
1197 * - encoding: set by user.
1198 * - decoding: set by user.
1201 #define FF_DEBUG_PICT_INFO 1
1202 #define FF_DEBUG_RC 2
1203 #define FF_DEBUG_BITSTREAM 4
1204 #define FF_DEBUG_MB_TYPE 8
1205 #define FF_DEBUG_QP 16
1206 #define FF_DEBUG_MV 32
1207 #define FF_DEBUG_DCT_COEFF 0x00000040
1208 #define FF_DEBUG_SKIP 0x00000080
1209 #define FF_DEBUG_STARTCODE 0x00000100
1210 #define FF_DEBUG_PTS 0x00000200
1211 #define FF_DEBUG_ER 0x00000400
1212 #define FF_DEBUG_MMCO 0x00000800
1213 #define FF_DEBUG_BUGS 0x00001000
1214 #define FF_DEBUG_VIS_QP 0x00002000
1215 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1219 * - encoding: set by user.
1220 * - decoding: set by user.
1223 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1224 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1225 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1229 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1230 * - decoding: unused
1235 * minimum MB quantizer.
1236 * - encoding: set by user.
1237 * - decoding: unused
1242 * maximum MB quantizer.
1243 * - encoding: set by user.
1244 * - decoding: unused
1249 * motion estimation compare function.
1250 * - encoding: set by user.
1251 * - decoding: unused
1255 * subpixel motion estimation compare function.
1256 * - encoding: set by user.
1257 * - decoding: unused
1261 * macroblock compare function (not supported yet).
1262 * - encoding: set by user.
1263 * - decoding: unused
1267 * interlaced dct compare function
1268 * - encoding: set by user.
1269 * - decoding: unused
1272 #define FF_CMP_SAD 0
1273 #define FF_CMP_SSE 1
1274 #define FF_CMP_SATD 2
1275 #define FF_CMP_DCT 3
1276 #define FF_CMP_PSNR 4
1277 #define FF_CMP_BIT 5
1279 #define FF_CMP_ZERO 7
1280 #define FF_CMP_VSAD 8
1281 #define FF_CMP_VSSE 9
1282 #define FF_CMP_NSSE 10
1283 #define FF_CMP_W53 11
1284 #define FF_CMP_W97 12
1285 #define FF_CMP_CHROMA 256
1288 * ME diamond size & shape.
1289 * - encoding: set by user.
1290 * - decoding: unused
1295 * amount of previous MV predictors (2a+1 x 2a+1 square).
1296 * - encoding: set by user.
1297 * - decoding: unused
1299 int last_predictor_count;
1302 * pre pass for motion estimation.
1303 * - encoding: set by user.
1304 * - decoding: unused
1309 * motion estimation pre pass compare function.
1310 * - encoding: set by user.
1311 * - decoding: unused
1316 * ME pre pass diamond size & shape.
1317 * - encoding: set by user.
1318 * - decoding: unused
1323 * subpel ME quality.
1324 * - encoding: set by user.
1325 * - decoding: unused
1327 int me_subpel_quality;
1330 * callback to negotiate the pixelFormat.
1331 * @param fmt is the list of formats which are supported by the codec,
1332 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1333 * the first is allways the native one
1334 * @return the choosen format
1335 * - encoding: unused
1336 * - decoding: set by user, if not set then the native format will always be choosen
1338 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1341 * DTG active format information (additionnal aspect ratio
1342 * information only used in DVB MPEG2 transport streams). 0 if
1345 * - encoding: unused.
1346 * - decoding: set by decoder
1348 int dtg_active_format;
1349 #define FF_DTG_AFD_SAME 8
1350 #define FF_DTG_AFD_4_3 9
1351 #define FF_DTG_AFD_16_9 10
1352 #define FF_DTG_AFD_14_9 11
1353 #define FF_DTG_AFD_4_3_SP_14_9 13
1354 #define FF_DTG_AFD_16_9_SP_14_9 14
1355 #define FF_DTG_AFD_SP_4_3 15
1358 * Maximum motion estimation search range in subpel units.
1359 * if 0 then no limit
1361 * - encoding: set by user.
1362 * - decoding: unused.
1368 * for variable fps this is 1
1369 * - encoding: set by user.
1370 * - decoding: set by lavc.
1371 * @todo move this after frame_rate
1374 int frame_rate_base;
1376 * intra quantizer bias.
1377 * - encoding: set by user.
1378 * - decoding: unused
1380 int intra_quant_bias;
1381 #define FF_DEFAULT_QUANT_BIAS 999999
1384 * inter quantizer bias.
1385 * - encoding: set by user.
1386 * - decoding: unused
1388 int inter_quant_bias;
1392 * - encoding: unused.
1393 * - decoding: which clrtable should be used for 8bit RGB images
1394 * table have to be stored somewhere FIXME
1399 * internal_buffer count.
1400 * Dont touch, used by lavc default_get_buffer()
1402 int internal_buffer_count;
1406 * Dont touch, used by lavc default_get_buffer()
1408 void *internal_buffer;
1410 #define FF_LAMBDA_SHIFT 7
1411 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1412 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1413 #define FF_LAMBDA_MAX (256*128-1)
1415 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1417 * global quality for codecs which cannot change it per frame.
1418 * this should be proportional to MPEG1/2/4 qscale.
1419 * - encoding: set by user.
1420 * - decoding: unused
1424 #define FF_CODER_TYPE_VLC 0
1425 #define FF_CODER_TYPE_AC 1
1428 * - encoding: set by user.
1429 * - decoding: unused
1435 * - encoding: set by user.
1436 * - decoding: unused
1442 * - encoding: unused
1443 * - decoding: set by user.
1446 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1447 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1448 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1451 * XVideo Motion Acceleration
1452 * - encoding: forbidden
1453 * - decoding: set by decoder
1455 int xvmc_acceleration;
1458 * macroblock decision mode
1459 * - encoding: set by user.
1460 * - decoding: unused
1463 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1464 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1465 #define FF_MB_DECISION_RD 2 ///< rate distoration
1468 * custom intra quantization matrix
1469 * - encoding: set by user, can be NULL
1470 * - decoding: set by lavc
1472 uint16_t *intra_matrix;
1475 * custom inter quantization matrix
1476 * - encoding: set by user, can be NULL
1477 * - decoding: set by lavc
1479 uint16_t *inter_matrix;
1482 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1483 * this is used to workaround some encoder bugs
1484 * - encoding: unused
1485 * - decoding: set by user, will be converted to upper case by lavc during init
1487 unsigned int stream_codec_tag;
1490 * scene change detection threshold.
1491 * 0 is default, larger means fewer detected scene changes
1492 * - encoding: set by user.
1493 * - decoding: unused
1495 int scenechange_threshold;
1498 * minimum lagrange multipler
1499 * - encoding: set by user.
1500 * - decoding: unused
1505 * maximum lagrange multipler
1506 * - encoding: set by user.
1507 * - decoding: unused
1512 * Palette control structure
1513 * - encoding: ??? (no palette-enabled encoder yet)
1514 * - decoding: set by user.
1516 struct AVPaletteControl *palctrl;
1519 * noise reduction strength
1520 * - encoding: set by user.
1521 * - decoding: unused
1523 int noise_reduction;
1526 * called at the beginning of a frame to get cr buffer for it.
1527 * buffer type (size, hints) must be the same. lavc won't check it.
1528 * lavc will pass previous buffer in pic, function should return
1529 * same buffer or new buffer with old frame "painted" into it.
1530 * if pic.data[0] == NULL must behave like get_buffer().
1531 * - encoding: unused
1532 * - decoding: set by lavc, user can override
1534 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1537 * number of bits which should be loaded into the rc buffer before decoding starts
1538 * - encoding: set by user.
1539 * - decoding: unused
1541 int rc_initial_buffer_occupancy;
1545 * - encoding: set by user.
1546 * - decoding: unused
1548 int inter_threshold;
1552 * - encoding: set by user.
1553 * - decoding: set by user.
1558 * simulates errors in the bitstream to test error concealment.
1559 * - encoding: set by user.
1560 * - decoding: unused.
1565 * MP3 antialias algorithm, see FF_AA_* below.
1566 * - encoding: unused
1567 * - decoding: set by user
1570 #define FF_AA_AUTO 0
1571 #define FF_AA_FASTINT 1 //not implemented yet
1573 #define FF_AA_FLOAT 3
1575 * Quantizer noise shaping.
1576 * - encoding: set by user
1577 * - decoding: unused
1579 int quantizer_noise_shaping;
1583 * is used to decide how many independant tasks should be passed to execute()
1584 * - encoding: set by user
1585 * - decoding: set by user
1590 * the codec may call this to execute several independant things. it will return only after
1591 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1592 * default implementation will execute the parts serially
1593 * @param count the number of things to execute
1594 * - encoding: set by lavc, user can override
1595 * - decoding: set by lavc, user can override
1597 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1601 * can be used by execute() to store some per AVCodecContext stuff.
1602 * - encoding: set by execute()
1603 * - decoding: set by execute()
1605 void *thread_opaque;
1608 * Motion estimation threshold. under which no motion estimation is
1609 * performed, but instead the user specified motion vectors are used
1611 * - encoding: set by user
1612 * - decoding: unused
1617 * Macroblock threshold. under which the user specified macroblock types will be used
1618 * - encoding: set by user
1619 * - decoding: unused
1624 * precision of the intra dc coefficient - 8.
1625 * - encoding: set by user
1626 * - decoding: unused
1628 int intra_dc_precision;
1631 * noise vs. sse weight for the nsse comparsion function.
1632 * - encoding: set by user
1633 * - decoding: unused
1638 * number of macroblock rows at the top which are skiped.
1639 * - encoding: unused
1640 * - decoding: set by user
1645 * number of macroblock rows at the bottom which are skiped.
1646 * - encoding: unused
1647 * - decoding: set by user
1653 * - encoding: set by user
1654 * - decoding: set by lavc
1657 #define FF_PROFILE_UNKNOWN -99
1661 * - encoding: set by user
1662 * - decoding: set by lavc
1665 #define FF_LEVEL_UNKNOWN -99
1668 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1669 * - encoding: unused
1670 * - decoding: set by user
1675 * bistream width / height. may be different from width/height if lowres
1676 * or other things are used
1677 * - encoding: unused
1678 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1680 int coded_width, coded_height;
1687 typedef struct AVOption {
1688 /** options' name */
1689 const char *name; /* if name is NULL, it indicates a link to next */
1690 /** short English text help or const struct AVOption* subpointer */
1691 const char *help; // const struct AVOption* sub;
1692 /** offset to context structure where the parsed value should be stored */
1694 /** options' type */
1696 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1697 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1698 #define FF_OPT_TYPE_INT 3 ///< integer
1699 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1700 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1701 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1702 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1703 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1704 /** min value (min == max -> no limits) */
1706 /** maximum value for double/int */
1708 /** default boo [0,1]l/double/int value */
1711 * default string value (with optional semicolon delimited extra option-list
1712 * i.e. option1;option2;option3
1713 * defval might select other then first argument as default
1716 #define FF_OPT_MAX_DEPTH 10
1720 * Parse option(s) and sets fields in passed structure
1721 * @param strct structure where the parsed results will be written
1722 * @param list list with AVOptions
1723 * @param opts string with options for parsing
1725 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1731 typedef struct AVCodec {
1733 enum CodecType type;
1736 int (*init)(AVCodecContext *);
1737 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1738 int (*close)(AVCodecContext *);
1739 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1740 uint8_t *buf, int buf_size);
1742 const AVOption *options;
1743 struct AVCodec *next;
1744 void (*flush)(AVCodecContext *);
1745 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1746 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1750 * four components are given, that's all.
1751 * the last component is alpha
1753 typedef struct AVPicture {
1755 int linesize[4]; ///< number of bytes per line
1760 * This structure defines a method for communicating palette changes
1761 * between and demuxer and a decoder.
1763 #define AVPALETTE_SIZE 1024
1764 #define AVPALETTE_COUNT 256
1765 typedef struct AVPaletteControl {
1767 /* demuxer sets this to 1 to indicate the palette has changed;
1768 * decoder resets to 0 */
1769 int palette_changed;
1771 /* 4-byte ARGB palette entries, stored in native byte order; note that
1772 * the individual palette components should be on a 8-bit scale; if
1773 * the palette data comes from a IBM VGA native format, the component
1774 * data is probably 6 bits in size and needs to be scaled */
1775 unsigned int palette[AVPALETTE_COUNT];
1779 extern AVCodec ac3_encoder;
1780 extern AVCodec mp2_encoder;
1781 extern AVCodec mp3lame_encoder;
1782 extern AVCodec oggvorbis_encoder;
1783 extern AVCodec faac_encoder;
1784 extern AVCodec xvid_encoder;
1785 extern AVCodec mpeg1video_encoder;
1786 extern AVCodec mpeg2video_encoder;
1787 extern AVCodec h263_encoder;
1788 extern AVCodec h263p_encoder;
1789 extern AVCodec flv_encoder;
1790 extern AVCodec rv10_encoder;
1791 extern AVCodec rv20_encoder;
1792 extern AVCodec dvvideo_encoder;
1793 extern AVCodec mjpeg_encoder;
1794 extern AVCodec ljpeg_encoder;
1795 extern AVCodec mpeg4_encoder;
1796 extern AVCodec msmpeg4v1_encoder;
1797 extern AVCodec msmpeg4v2_encoder;
1798 extern AVCodec msmpeg4v3_encoder;
1799 extern AVCodec wmv1_encoder;
1800 extern AVCodec wmv2_encoder;
1801 extern AVCodec huffyuv_encoder;
1802 extern AVCodec h264_encoder;
1803 extern AVCodec asv1_encoder;
1804 extern AVCodec asv2_encoder;
1805 extern AVCodec vcr1_encoder;
1806 extern AVCodec ffv1_encoder;
1807 extern AVCodec snow_encoder;
1808 extern AVCodec mdec_encoder;
1809 extern AVCodec zlib_encoder;
1810 extern AVCodec sonic_encoder;
1811 extern AVCodec sonic_ls_encoder;
1812 extern AVCodec svq1_encoder;
1814 extern AVCodec h263_decoder;
1815 extern AVCodec h261_decoder;
1816 extern AVCodec mpeg4_decoder;
1817 extern AVCodec msmpeg4v1_decoder;
1818 extern AVCodec msmpeg4v2_decoder;
1819 extern AVCodec msmpeg4v3_decoder;
1820 extern AVCodec wmv1_decoder;
1821 extern AVCodec wmv2_decoder;
1822 extern AVCodec mpeg1video_decoder;
1823 extern AVCodec mpeg2video_decoder;
1824 extern AVCodec mpegvideo_decoder;
1825 extern AVCodec mpeg_xvmc_decoder;
1826 extern AVCodec h263i_decoder;
1827 extern AVCodec flv_decoder;
1828 extern AVCodec rv10_decoder;
1829 extern AVCodec rv20_decoder;
1830 extern AVCodec svq1_decoder;
1831 extern AVCodec svq3_decoder;
1832 extern AVCodec dvvideo_decoder;
1833 extern AVCodec wmav1_decoder;
1834 extern AVCodec wmav2_decoder;
1835 extern AVCodec mjpeg_decoder;
1836 extern AVCodec mjpegb_decoder;
1837 extern AVCodec sp5x_decoder;
1838 extern AVCodec mp2_decoder;
1839 extern AVCodec mp3_decoder;
1840 extern AVCodec mace3_decoder;
1841 extern AVCodec mace6_decoder;
1842 extern AVCodec huffyuv_decoder;
1843 extern AVCodec oggvorbis_decoder;
1844 extern AVCodec cyuv_decoder;
1845 extern AVCodec h264_decoder;
1846 extern AVCodec indeo3_decoder;
1847 extern AVCodec vp3_decoder;
1848 extern AVCodec theora_decoder;
1849 extern AVCodec amr_nb_decoder;
1850 extern AVCodec amr_nb_encoder;
1851 extern AVCodec amr_wb_encoder;
1852 extern AVCodec amr_wb_decoder;
1853 extern AVCodec aac_decoder;
1854 extern AVCodec mpeg4aac_decoder;
1855 extern AVCodec asv1_decoder;
1856 extern AVCodec asv2_decoder;
1857 extern AVCodec vcr1_decoder;
1858 extern AVCodec cljr_decoder;
1859 extern AVCodec ffv1_decoder;
1860 extern AVCodec snow_decoder;
1861 extern AVCodec fourxm_decoder;
1862 extern AVCodec mdec_decoder;
1863 extern AVCodec roq_decoder;
1864 extern AVCodec interplay_video_decoder;
1865 extern AVCodec xan_wc3_decoder;
1866 extern AVCodec rpza_decoder;
1867 extern AVCodec cinepak_decoder;
1868 extern AVCodec msrle_decoder;
1869 extern AVCodec msvideo1_decoder;
1870 extern AVCodec vqa_decoder;
1871 extern AVCodec idcin_decoder;
1872 extern AVCodec eightbps_decoder;
1873 extern AVCodec smc_decoder;
1874 extern AVCodec flic_decoder;
1875 extern AVCodec vmdvideo_decoder;
1876 extern AVCodec vmdaudio_decoder;
1877 extern AVCodec truemotion1_decoder;
1878 extern AVCodec mszh_decoder;
1879 extern AVCodec zlib_decoder;
1880 extern AVCodec ra_144_decoder;
1881 extern AVCodec ra_288_decoder;
1882 extern AVCodec roq_dpcm_decoder;
1883 extern AVCodec interplay_dpcm_decoder;
1884 extern AVCodec xan_dpcm_decoder;
1885 extern AVCodec sol_dpcm_decoder;
1886 extern AVCodec sonic_decoder;
1887 extern AVCodec qtrle_decoder;
1888 extern AVCodec flac_decoder;
1889 extern AVCodec tscc_decoder;
1890 extern AVCodec ulti_decoder;
1891 extern AVCodec qdraw_decoder;
1894 #define PCM_CODEC(id, name) \
1895 extern AVCodec name ## _decoder; \
1896 extern AVCodec name ## _encoder
1898 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1899 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1900 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1901 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1902 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1903 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1904 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1905 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1909 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1910 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1911 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1912 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1913 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1914 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1915 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1916 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1917 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1918 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1919 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1920 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1921 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
1925 /* dummy raw video codec */
1926 extern AVCodec rawvideo_encoder;
1927 extern AVCodec rawvideo_decoder;
1929 /* the following codecs use external GPL libs */
1930 extern AVCodec ac3_decoder;
1931 extern AVCodec dts_decoder;
1935 struct ReSampleContext;
1936 struct AVResampleContext;
1938 typedef struct ReSampleContext ReSampleContext;
1940 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1941 int output_rate, int input_rate);
1942 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1943 void audio_resample_close(ReSampleContext *s);
1945 struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1946 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1947 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1948 void av_resample_close(struct AVResampleContext *c);
1950 /* YUV420 format is assumed ! */
1952 struct ImgReSampleContext;
1954 typedef struct ImgReSampleContext ImgReSampleContext;
1956 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1957 int input_width, int input_height);
1959 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1960 int iwidth, int iheight,
1961 int topBand, int bottomBand,
1962 int leftBand, int rightBand,
1963 int padtop, int padbottom,
1964 int padleft, int padright);
1967 void img_resample(ImgReSampleContext *s,
1968 AVPicture *output, const AVPicture *input);
1970 void img_resample_close(ImgReSampleContext *s);
1973 * Allocate memory for a picture. Call avpicture_free to free it.
1975 * @param picture the picture to be filled in.
1976 * @param pix_fmt the format of the picture.
1977 * @param width the width of the picture.
1978 * @param height the height of the picture.
1979 * @return 0 if successful, -1 if not.
1981 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1983 /* Free a picture previously allocated by avpicture_alloc. */
1984 void avpicture_free(AVPicture *picture);
1986 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1987 int pix_fmt, int width, int height);
1988 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1989 unsigned char *dest, int dest_size);
1990 int avpicture_get_size(int pix_fmt, int width, int height);
1991 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1992 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1993 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
1994 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1996 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1997 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1998 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1999 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2000 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2001 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2003 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2005 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2006 int has_alpha, int *loss_ptr);
2008 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2009 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2010 int img_get_alpha_info(const AVPicture *src,
2011 int pix_fmt, int width, int height);
2013 /* convert among pixel formats */
2014 int img_convert(AVPicture *dst, int dst_pix_fmt,
2015 const AVPicture *src, int pix_fmt,
2016 int width, int height);
2018 /* deinterlace a picture */
2019 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2020 int pix_fmt, int width, int height);
2022 /* external high level API */
2024 extern AVCodec *first_avcodec;
2026 /* returns LIBAVCODEC_VERSION_INT constant */
2027 unsigned avcodec_version(void);
2028 /* returns LIBAVCODEC_BUILD constant */
2029 unsigned avcodec_build(void);
2030 void avcodec_init(void);
2032 void register_avcodec(AVCodec *format);
2033 AVCodec *avcodec_find_encoder(enum CodecID id);
2034 AVCodec *avcodec_find_encoder_by_name(const char *name);
2035 AVCodec *avcodec_find_decoder(enum CodecID id);
2036 AVCodec *avcodec_find_decoder_by_name(const char *name);
2037 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2039 void avcodec_get_context_defaults(AVCodecContext *s);
2040 AVCodecContext *avcodec_alloc_context(void);
2041 void avcodec_get_frame_defaults(AVFrame *pic);
2042 AVFrame *avcodec_alloc_frame(void);
2044 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2045 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2046 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2047 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2048 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2050 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2051 void avcodec_thread_free(AVCodecContext *s);
2052 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2053 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2054 //FIXME func typedef
2057 * opens / inits the AVCodecContext.
2060 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2062 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2063 int *frame_size_ptr,
2064 uint8_t *buf, int buf_size);
2065 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2066 int *got_picture_ptr,
2067 uint8_t *buf, int buf_size);
2068 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2070 uint8_t *buf, int buf_size);
2071 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2072 const short *samples);
2073 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2074 const AVFrame *pict);
2076 int avcodec_close(AVCodecContext *avctx);
2078 void avcodec_register_all(void);
2080 void avcodec_flush_buffers(AVCodecContext *avctx);
2082 /* misc usefull functions */
2085 * returns a single letter to describe the picture type
2087 char av_get_pict_type_char(int pict_type);
2090 * reduce a fraction.
2091 * this is usefull for framerate calculations
2092 * @param max the maximum allowed for dst_nom & dst_den
2093 * @return 1 if exact, 0 otherwise
2095 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2098 * rescale a 64bit integer with rounding to nearest.
2099 * a simple a*b/c isnt possible as it can overflow
2101 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2104 * rescale a 64bit integer with specified rounding.
2105 * a simple a*b/c isnt possible as it can overflow
2107 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2110 typedef struct AVCodecParserContext {
2112 struct AVCodecParser *parser;
2113 int64_t frame_offset; /* offset of the current frame */
2114 int64_t cur_offset; /* current offset
2115 (incremented by each av_parser_parse()) */
2116 int64_t last_frame_offset; /* offset of the last frame */
2118 int pict_type; /* XXX: put it back in AVCodecContext */
2119 int repeat_pict; /* XXX: put it back in AVCodecContext */
2120 int64_t pts; /* pts of the current frame */
2121 int64_t dts; /* dts of the current frame */
2126 int fetch_timestamp;
2128 #define AV_PARSER_PTS_NB 4
2129 int cur_frame_start_index;
2130 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2131 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2132 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2133 } AVCodecParserContext;
2135 typedef struct AVCodecParser {
2136 int codec_ids[3]; /* several codec IDs are permitted */
2138 int (*parser_init)(AVCodecParserContext *s);
2139 int (*parser_parse)(AVCodecParserContext *s,
2140 AVCodecContext *avctx,
2141 uint8_t **poutbuf, int *poutbuf_size,
2142 const uint8_t *buf, int buf_size);
2143 void (*parser_close)(AVCodecParserContext *s);
2144 struct AVCodecParser *next;
2147 extern AVCodecParser *av_first_parser;
2149 void av_register_codec_parser(AVCodecParser *parser);
2150 AVCodecParserContext *av_parser_init(int codec_id);
2151 int av_parser_parse(AVCodecParserContext *s,
2152 AVCodecContext *avctx,
2153 uint8_t **poutbuf, int *poutbuf_size,
2154 const uint8_t *buf, int buf_size,
2155 int64_t pts, int64_t dts);
2156 void av_parser_close(AVCodecParserContext *s);
2158 extern AVCodecParser mpegvideo_parser;
2159 extern AVCodecParser mpeg4video_parser;
2160 extern AVCodecParser h261_parser;
2161 extern AVCodecParser h263_parser;
2162 extern AVCodecParser h264_parser;
2163 extern AVCodecParser mpegaudio_parser;
2164 extern AVCodecParser ac3_parser;
2167 void *av_malloc(unsigned int size);
2168 void *av_mallocz(unsigned int size);
2169 void *av_realloc(void *ptr, unsigned int size);
2170 void av_free(void *ptr);
2171 char *av_strdup(const char *s);
2172 void av_freep(void *ptr);
2173 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2174 /* for static data only */
2175 /* call av_free_static to release all staticaly allocated tables */
2176 void av_free_static(void);
2177 void *av_mallocz_static(unsigned int size);
2179 /* add by bero : in adx.c */
2180 int is_adx(const unsigned char *buf,size_t bufsize);
2182 void img_copy(AVPicture *dst, const AVPicture *src,
2183 int pix_fmt, int width, int height);
2189 #define AV_LOG_QUIET -1
2190 #define AV_LOG_ERROR 0
2191 #define AV_LOG_INFO 1
2192 #define AV_LOG_DEBUG 2
2195 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2197 extern void av_log(void*, int level, const char *fmt, ...);
2200 extern void av_vlog(void*, int level, const char *fmt, va_list);
2201 extern int av_log_get_level(void);
2202 extern void av_log_set_level(int);
2203 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2206 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2207 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2208 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2209 (((uint8_t*)(x))[1] << 16) | \
2210 (((uint8_t*)(x))[2] << 8) | \
2212 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2213 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2214 (((uint8_t*)(x))[2] << 16) | \
2215 (((uint8_t*)(x))[1] << 8) | \
2223 #endif /* AVCODEC_H */