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 4736
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,
72 CODEC_ID_INTERPLAY_VIDEO,
104 /* various pcm "codecs" */
105 CODEC_ID_PCM_S16LE= 0x10000,
114 /* various adpcm codecs */
115 CODEC_ID_ADPCM_IMA_QT= 0x11000,
116 CODEC_ID_ADPCM_IMA_WAV,
117 CODEC_ID_ADPCM_IMA_DK3,
118 CODEC_ID_ADPCM_IMA_DK4,
119 CODEC_ID_ADPCM_IMA_WS,
120 CODEC_ID_ADPCM_IMA_SMJPEG,
130 CODEC_ID_AMR_NB= 0x12000,
133 /* RealAudio codecs*/
134 CODEC_ID_RA_144= 0x13000,
137 /* various DPCM codecs */
138 CODEC_ID_ROQ_DPCM= 0x14000,
139 CODEC_ID_INTERPLAY_DPCM,
143 CODEC_ID_MP2= 0x15000,
144 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
160 CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
161 stream (only used by libavformat) */
164 /* CODEC_ID_MP3LAME is absolete */
165 #define CODEC_ID_MP3LAME CODEC_ID_MP3
168 CODEC_TYPE_UNKNOWN = -1,
175 * Pixel format. Notes:
177 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
178 * color is put together as:
179 * (A << 24) | (R << 16) | (G << 8) | B
180 * This is stored as BGRA on little endian CPU architectures and ARGB on
183 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
184 * image data is stored in AVFrame.data[0]. The palette is transported in
185 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
186 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
187 * also endian-specific). Note also that the individual RGB palette
188 * components stored in AVFrame.data[1] should be in the range 0..255.
189 * This is important as many custom PAL8 video codecs that were designed
190 * to run on the IBM VGA graphics adapter use 6-bit palette components.
193 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
194 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
195 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
196 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
197 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
198 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
199 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
200 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
201 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
202 PIX_FMT_RGB565, ///< always stored in cpu endianness
203 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
205 PIX_FMT_MONOWHITE, ///< 0 is white
206 PIX_FMT_MONOBLACK, ///< 0 is black
207 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
208 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
209 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
210 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
211 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
212 PIX_FMT_XVMC_MPEG2_IDCT,
213 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
214 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
218 /* currently unused, may be used if 24/32 bits samples ever supported */
220 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
224 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
227 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
228 * this is mainly needed because some optimized bitstream readers read
229 * 32 or 64 bit at once and could read over the end<br>
230 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
231 * MPEG bitstreams could cause overread and segfault
233 #define FF_INPUT_BUFFER_PADDING_SIZE 8
235 /* motion estimation type, EPZS by default */
246 AV_ROUND_ZERO = 0, ///< round toward zero
247 AV_ROUND_INF = 1, ///< round away from zero
248 AV_ROUND_DOWN = 2, ///< round toward -infinity
249 AV_ROUND_UP = 3, ///< round toward +infinity
250 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
253 typedef struct RcOverride{
256 int qscale; // if this is 0 then quality_factor will be used instead
257 float quality_factor;
260 /* only for ME compatiblity with old apps */
261 extern int motion_estimation_method;
263 #define FF_MAX_B_FRAMES 8
266 these flags can be passed in AVCodecContext.flags before initing
267 Note: note not everything is supported yet
270 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
271 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
272 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
273 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
274 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
275 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
276 /* parent program gurantees that the input for b-frame containing streams is not written to
277 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
278 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
279 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
280 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
281 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
282 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
283 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
284 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
285 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
286 of only at frame boundaries */
287 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
288 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
289 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
290 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
291 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
292 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
293 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
294 /* Fx : Flag for h263+ extra options */
295 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
296 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
297 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
298 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
299 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
300 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
301 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
302 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
303 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
304 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
305 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
306 #define CODEC_FLAG_CLOSED_GOP 0x80000000
307 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
308 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
310 /* Unsupported options :
311 * Syntax Arithmetic coding (SAC)
312 * Reference Picture Selection
313 * Independant Segment Decoding */
315 /* codec capabilities */
317 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
319 * Codec uses get_buffer() for allocating buffers.
320 * direct rendering method 1
322 #define CODEC_CAP_DR1 0x0002
323 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
325 #define CODEC_CAP_PARSE_ONLY 0x0004
326 #define CODEC_CAP_TRUNCATED 0x0008
327 /* codec can export data for HW decoding (XvMC) */
328 #define CODEC_CAP_HWACCEL 0x0010
329 /** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
330 #define CODEC_CAP_DELAY 0x0020
332 //the following defines might change, so dont expect compatibility if u use them
333 #define MB_TYPE_INTRA4x4 0x0001
334 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
335 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
336 #define MB_TYPE_16x16 0x0008
337 #define MB_TYPE_16x8 0x0010
338 #define MB_TYPE_8x16 0x0020
339 #define MB_TYPE_8x8 0x0040
340 #define MB_TYPE_INTERLACED 0x0080
341 #define MB_TYPE_DIRECT2 0x0100 //FIXME
342 #define MB_TYPE_ACPRED 0x0200
343 #define MB_TYPE_GMC 0x0400
344 #define MB_TYPE_SKIP 0x0800
345 #define MB_TYPE_P0L0 0x1000
346 #define MB_TYPE_P1L0 0x2000
347 #define MB_TYPE_P0L1 0x4000
348 #define MB_TYPE_P1L1 0x8000
349 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
350 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
351 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
352 #define MB_TYPE_QUANT 0x00010000
353 #define MB_TYPE_CBP 0x00020000
354 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
358 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
360 typedef struct AVPanScan{
363 * - encoding: set by user.
364 * - decoding: set by lavc
369 * width and height in 1/16 pel
370 * - encoding: set by user.
371 * - decoding: set by lavc
377 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
378 * - encoding: set by user.
379 * - decoding: set by lavc
381 int16_t position[3][2];
384 #define FF_COMMON_FRAME \
386 * pointer to the picture planes.\
387 * this might be different from the first allocated byte\
394 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
395 * this isnt used by lavc unless the default get/release_buffer() is used\
401 * 1 -> keyframe, 0-> not\
402 * - encoding: set by lavc\
403 * - decoding: set by lavc\
408 * picture type of the frame, see ?_TYPE below.\
409 * - encoding: set by lavc for coded_picture (and set by user for input)\
410 * - decoding: set by lavc\
415 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
416 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
417 * - encoding: MUST be set by user\
418 * - decoding: set by lavc\
423 * picture number in bitstream order.\
424 * - encoding: set by\
425 * - decoding: set by lavc\
427 int coded_picture_number;\
429 * picture number in display order.\
430 * - encoding: set by\
431 * - decoding: set by lavc\
433 int display_picture_number;\
436 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
437 * - encoding: set by lavc for coded_picture (and set by user for input)\
438 * - decoding: set by lavc\
443 * buffer age (1->was last buffer and dint change, 2->..., ...).\
444 * set to INT_MAX if the buffer has not been used yet \
445 * - encoding: unused\
446 * - decoding: MUST be set by get_buffer()\
451 * is this picture used as reference\
452 * - encoding: unused\
453 * - decoding: set by lavc (before get_buffer() call))\
459 * - encoding: unused\
460 * - decoding: set by lavc\
462 int8_t *qscale_table;\
465 * - encoding: unused\
466 * - decoding: set by lavc\
471 * mbskip_table[mb]>=1 if MB didnt change\
472 * stride= mb_width = (width+15)>>4\
473 * - encoding: unused\
474 * - decoding: set by lavc\
476 uint8_t *mbskip_table;\
479 * Motion vector table\
480 * - encoding: set by user\
481 * - decoding: set by lavc\
483 int16_t (*motion_val[2])[2];\
486 * Macroblock type table\
487 * mb_type_base + mb_width + 2\
488 * - encoding: set by user\
489 * - decoding: set by lavc\
494 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
495 * - encoding: unused\
496 * - decoding: set by lavc\
498 uint8_t motion_subsample_log2;\
501 * for some private data of the user\
502 * - encoding: unused\
503 * - decoding: set by user\
509 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
510 * - decoding: unused\
515 * type of the buffer (to keep track of who has to dealloc data[*])\
516 * - encoding: set by the one who allocs it\
517 * - decoding: set by the one who allocs it\
518 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
523 * when decoding, this signal how much the picture must be delayed.\
524 * extra_delay = repeat_pict / (2*fps)\
525 * - encoding: unused\
526 * - decoding: set by lavc\
536 * The content of the picture is interlaced.\
537 * - encoding: set by user\
538 * - decoding: set by lavc (default 0)\
540 int interlaced_frame;\
543 * if the content is interlaced, is top field displayed first.\
544 * - encoding: set by user\
545 * - decoding: set by lavc\
547 int top_field_first;\
551 * - encoding: set by user\
552 * - decoding: set by lavc\
554 AVPanScan *pan_scan;\
557 * tell user application that palette has changed from previous frame.\
558 * - encoding: ??? (no palette-enabled encoder yet)\
559 * - decoding: set by lavc (default 0)\
561 int palette_has_changed;\
564 * Codec suggestion on buffer type if != 0\
565 * - encoding: unused\
566 * - decoding: set by lavc (before get_buffer() call))\
572 * - encoding: unused\
573 * - decoding: set by lavc\
578 * Motion referece frame index\
579 * - encoding: set by user\
580 * - decoding: set by lavc\
582 int8_t *ref_index[2];
584 #define FF_QSCALE_TYPE_MPEG1 0
585 #define FF_QSCALE_TYPE_MPEG2 1
587 #define FF_BUFFER_TYPE_INTERNAL 1
588 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
589 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
590 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
593 #define FF_I_TYPE 1 // Intra
594 #define FF_P_TYPE 2 // Predicted
595 #define FF_B_TYPE 3 // Bi-dir predicted
596 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
600 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
601 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
602 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
603 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
608 typedef struct AVFrame {
612 #define DEFAULT_FRAME_RATE_BASE 1001000
617 typedef struct AVCLASS AVClass;
619 const char* class_name;
620 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
621 or AVFormatContext, which begin with an AVClass.
622 Needed because av_log is in libavcodec and has no visibility
623 of AVIn/OutputFormat */
627 * main external api structure.
629 typedef struct AVCodecContext {
631 * Info on struct for av_log
632 * - set by avcodec_alloc_context
636 * the average bitrate.
637 * - encoding: set by user. unused for constant quantizer encoding
638 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
643 * number of bits the bitstream is allowed to diverge from the reference.
644 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
645 * - encoding: set by user. unused for constant quantizer encoding
648 int bit_rate_tolerance;
652 * - encoding: set by user.
653 * - decoding: set by user.
658 * some codecs needs additionnal format info. It is stored here
659 * - encoding: set by user.
660 * - decoding: set by lavc. (FIXME is this ok?)
665 * motion estimation algorithm used for video coding.
666 * - encoding: MUST be set by user.
672 * some codecs need / can use extra-data like huffman tables.
673 * mjpeg: huffman tables
674 * rv10: additional flags
675 * mpeg4: global headers (they can be in the bitstream or here)
676 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
677 * then extradata_size to avoid prolems if its read with the bitstream reader
678 * - encoding: set/allocated/freed by lavc.
679 * - decoding: set/allocated/freed by user.
686 * frames per sec multiplied by frame_rate_base.
687 * for variable fps this is the precission, so if the timestamps
688 * can be specified in msec precssion then this is 1000*frame_rate_base
689 * - encoding: MUST be set by user
690 * - decoding: set by lavc. 0 or the frame_rate if available
695 * picture width / height.
696 * - encoding: MUST be set by user.
697 * - decoding: set by lavc.
698 * Note, for compatibility its possible to set this instead of
699 * coded_width/height before decoding
703 #define FF_ASPECT_EXTENDED 15
706 * the number of pictures in a group of pitures, or 0 for intra_only.
707 * - encoding: set by user.
713 * pixel format, see PIX_FMT_xxx.
714 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
715 * conversion is in order. This only works for
716 * codecs with one supported pix_fmt, we should
717 * do something for a generic case as well.
718 * - decoding: set by lavc.
720 enum PixelFormat pix_fmt;
723 * Frame rate emulation. If not zero lower layer (i.e. format handler)
724 * has to read frames at native frame rate.
725 * - encoding: set by user.
726 * - decoding: unused.
731 * if non NULL, 'draw_horiz_band' is called by the libavcodec
732 * decoder to draw an horizontal band. It improve cache usage. Not
733 * all codecs can do that. You must check the codec capabilities
736 * - decoding: set by user.
737 * @param height the height of the slice
738 * @param y the y position of the slice
739 * @param type 1->top field, 2->bottom field, 3->frame
740 * @param offset offset into the AVFrame.data from which the slice should be read
742 void (*draw_horiz_band)(struct AVCodecContext *s,
743 const AVFrame *src, int offset[4],
744 int y, int type, int height);
747 int sample_rate; ///< samples per sec
749 int sample_fmt; ///< sample format, currenly unused
751 /* the following data should not be initialized */
752 int frame_size; ///< in samples, initialized when calling 'init'
753 int frame_number; ///< audio or video frame number
754 int real_pict_num; ///< returns the real picture number of previous encoded frame
757 * number of frames the decoded output will be delayed relative to
759 * - encoding: set by lavc.
764 /* - encoding parameters */
765 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
766 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
770 * - encoding: set by user.
777 * - encoding: set by user.
783 * maximum quantizer difference etween frames.
784 * - encoding: set by user.
790 * maximum number of b frames between non b frames.
791 * note: the output will be delayed by max_b_frames+1 relative to the input
792 * - encoding: set by user.
798 * qscale factor between ip and b frames.
799 * - encoding: set by user.
802 float b_quant_factor;
804 /** obsolete FIXME remove */
806 int b_frame_strategy;
811 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
815 struct AVCodec *codec;
819 /* unused, FIXME remove*/
822 int rtp_payload_size; /* The size of the RTP payload, the coder will */
823 /* do it's best to deliver a chunk with size */
824 /* below rtp_payload_size, the chunk will start */
825 /* with a start code on some codecs like H.263 */
826 /* This doesn't take account of any particular */
827 /* headers inside the transmited RTP payload */
830 /* The RTP callcack: This function is called */
831 /* every time the encoder as a packet to send */
832 /* Depends on the encoder if the data starts */
833 /* with a Start Code (it should) H.263 does */
834 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
836 /* statistics, used for 2-pass encoding */
847 * number of bits used for the previously encoded frame.
848 * - encoding: set by lavc
854 * private data of the user, can be used to carry app specific stuff.
855 * - encoding: set by user
856 * - decoding: set by user
861 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
862 enum CodecID codec_id; /* see CODEC_ID_xxx */
865 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
866 * this is used to workaround some encoder bugs
867 * - encoding: set by user, if not then the default based on codec_id will be used
868 * - decoding: set by user, will be converted to upper case by lavc during init
870 unsigned int codec_tag;
873 * workaround bugs in encoders which sometimes cannot be detected automatically.
875 * - decoding: set by user
878 #define FF_BUG_AUTODETECT 1 ///< autodetection
879 #define FF_BUG_OLD_MSMPEG4 2
880 #define FF_BUG_XVID_ILACE 4
881 #define FF_BUG_UMP4 8
882 #define FF_BUG_NO_PADDING 16
883 #define FF_BUG_AMV 32
884 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
885 #define FF_BUG_QPEL_CHROMA 64
886 #define FF_BUG_STD_QPEL 128
887 #define FF_BUG_QPEL_CHROMA2 256
888 #define FF_BUG_DIRECT_BLOCKSIZE 512
889 #define FF_BUG_EDGE 1024
890 #define FF_BUG_HPEL_CHROMA 2048
891 #define FF_BUG_DC_CLIP 4096
892 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
895 * luma single coeff elimination threshold.
896 * - encoding: set by user
899 int luma_elim_threshold;
902 * chroma single coeff elimination threshold.
903 * - encoding: set by user
906 int chroma_elim_threshold;
909 * strictly follow the std (MPEG4, ...).
910 * - encoding: set by user
913 int strict_std_compliance;
916 * qscale offset between ip and b frames.
917 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
918 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
919 * - encoding: set by user.
922 float b_quant_offset;
925 * error resilience higher values will detect more errors but may missdetect
926 * some more or less valid parts as errors.
928 * - decoding: set by user
930 int error_resilience;
931 #define FF_ER_CAREFULL 1
932 #define FF_ER_COMPLIANT 2
933 #define FF_ER_AGGRESSIVE 3
934 #define FF_ER_VERY_AGGRESSIVE 4
937 * called at the beginning of each frame to get a buffer for it.
938 * if pic.reference is set then the frame will be read later by lavc
939 * avcodec_align_dimensions() should be used to find the required width and
940 * height, as they normally need to be rounded up to the next multiple of 16
942 * - decoding: set by lavc, user can override
944 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
947 * called to release buffers which where allocated with get_buffer.
948 * a released buffer can be reused in get_buffer()
949 * pic.data[*] must be set to NULL
951 * - decoding: set by lavc, user can override
953 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
956 * if 1 the stream has a 1 frame delay during decoding.
957 * - encoding: set by lavc
958 * - decoding: set by lavc
962 int block_align; ///< used by some WAV based audio codecs
964 int parse_only; /* - decoding only: if true, only parsing is done
965 (function avcodec_parse_frame()). The frame
966 data is returned. Only MPEG codecs support this now. */
969 * 0-> h263 quant 1-> mpeg quant.
970 * - encoding: set by user.
976 * pass1 encoding statistics output buffer.
977 * - encoding: set by lavc
983 * pass2 encoding statistics input buffer.
984 * concatenated stuff from stats_out of pass1 should be placed here
985 * - encoding: allocated/set/freed by user
991 * ratecontrol qmin qmax limiting method.
992 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
993 * - encoding: set by user.
1002 * ratecontrol override, see RcOverride.
1003 * - encoding: allocated/set/freed by user.
1004 * - decoding: unused
1006 RcOverride *rc_override;
1007 int rc_override_count;
1010 * rate control equation.
1011 * - encoding: set by user
1012 * - decoding: unused
1018 * - encoding: set by user.
1019 * - decoding: unused
1025 * - encoding: set by user.
1026 * - decoding: unused
1031 * decoder bitstream buffer size.
1032 * - encoding: set by user.
1033 * - decoding: unused
1036 float rc_buffer_aggressivity;
1039 * qscale factor between p and i frames.
1040 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1041 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1042 * - encoding: set by user.
1043 * - decoding: unused
1045 float i_quant_factor;
1048 * qscale offset between p and i frames.
1049 * - encoding: set by user.
1050 * - decoding: unused
1052 float i_quant_offset;
1055 * initial complexity for pass1 ratecontrol.
1056 * - encoding: set by user.
1057 * - decoding: unused
1059 float rc_initial_cplx;
1062 * dct algorithm, see FF_DCT_* below.
1063 * - encoding: set by user
1064 * - decoding: unused
1067 #define FF_DCT_AUTO 0
1068 #define FF_DCT_FASTINT 1
1069 #define FF_DCT_INT 2
1070 #define FF_DCT_MMX 3
1071 #define FF_DCT_MLIB 4
1072 #define FF_DCT_ALTIVEC 5
1073 #define FF_DCT_FAAN 6
1076 * luminance masking (0-> disabled).
1077 * - encoding: set by user
1078 * - decoding: unused
1083 * temporary complexity masking (0-> disabled).
1084 * - encoding: set by user
1085 * - decoding: unused
1087 float temporal_cplx_masking;
1090 * spatial complexity masking (0-> disabled).
1091 * - encoding: set by user
1092 * - decoding: unused
1094 float spatial_cplx_masking;
1097 * p block masking (0-> disabled).
1098 * - encoding: set by user
1099 * - decoding: unused
1104 * darkness masking (0-> disabled).
1105 * - encoding: set by user
1106 * - decoding: unused
1111 /* for binary compatibility */
1115 * idct algorithm, see FF_IDCT_* below.
1116 * - encoding: set by user
1117 * - decoding: set by user
1120 #define FF_IDCT_AUTO 0
1121 #define FF_IDCT_INT 1
1122 #define FF_IDCT_SIMPLE 2
1123 #define FF_IDCT_SIMPLEMMX 3
1124 #define FF_IDCT_LIBMPEG2MMX 4
1125 #define FF_IDCT_PS2 5
1126 #define FF_IDCT_MLIB 6
1127 #define FF_IDCT_ARM 7
1128 #define FF_IDCT_ALTIVEC 8
1129 #define FF_IDCT_SH4 9
1130 #define FF_IDCT_SIMPLEARM 10
1131 #define FF_IDCT_H264 11
1135 * - encoding: set by lavc
1136 * - decoding: set by user (or 0)
1140 * slice offsets in the frame in bytes.
1141 * - encoding: set/allocated by lavc
1142 * - decoding: set/allocated by user (or NULL)
1147 * error concealment flags.
1148 * - encoding: unused
1149 * - decoding: set by user
1151 int error_concealment;
1152 #define FF_EC_GUESS_MVS 1
1153 #define FF_EC_DEBLOCK 2
1156 * dsp_mask could be add used to disable unwanted CPU features
1157 * CPU features (i.e. MMX, SSE. ...)
1159 * with FORCE flag you may instead enable given CPU features
1160 * (Dangerous: usable in case of misdetection, improper usage however will
1161 * result into program crash)
1164 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1165 /* lower 16 bits - CPU features */
1167 #define FF_MM_MMX 0x0001 /* standard MMX */
1168 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1169 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1170 #define FF_MM_SSE 0x0008 /* SSE functions */
1171 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1172 #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
1173 #endif /* HAVE_MMX */
1176 * bits per sample/pixel from the demuxer (needed for huffyuv).
1177 * - encoding: set by lavc
1178 * - decoding: set by user
1180 int bits_per_sample;
1183 * prediction method (needed for huffyuv).
1184 * - encoding: set by user
1185 * - decoding: unused
1187 int prediction_method;
1188 #define FF_PRED_LEFT 0
1189 #define FF_PRED_PLANE 1
1190 #define FF_PRED_MEDIAN 2
1193 * sample aspect ratio (0 if unknown).
1194 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1195 * - encoding: set by user.
1196 * - decoding: set by lavc.
1198 AVRational sample_aspect_ratio;
1201 * the picture in the bitstream.
1202 * - encoding: set by lavc
1203 * - decoding: set by lavc
1205 AVFrame *coded_frame;
1209 * - encoding: set by user.
1210 * - decoding: set by user.
1213 #define FF_DEBUG_PICT_INFO 1
1214 #define FF_DEBUG_RC 2
1215 #define FF_DEBUG_BITSTREAM 4
1216 #define FF_DEBUG_MB_TYPE 8
1217 #define FF_DEBUG_QP 16
1218 #define FF_DEBUG_MV 32
1219 #define FF_DEBUG_DCT_COEFF 0x00000040
1220 #define FF_DEBUG_SKIP 0x00000080
1221 #define FF_DEBUG_STARTCODE 0x00000100
1222 #define FF_DEBUG_PTS 0x00000200
1223 #define FF_DEBUG_ER 0x00000400
1224 #define FF_DEBUG_MMCO 0x00000800
1225 #define FF_DEBUG_BUGS 0x00001000
1226 #define FF_DEBUG_VIS_QP 0x00002000
1227 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1231 * - encoding: set by user.
1232 * - decoding: set by user.
1235 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1236 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1237 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1241 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1242 * - decoding: unused
1247 * minimum MB quantizer.
1248 * - encoding: set by user.
1249 * - decoding: unused
1254 * maximum MB quantizer.
1255 * - encoding: set by user.
1256 * - decoding: unused
1261 * motion estimation compare function.
1262 * - encoding: set by user.
1263 * - decoding: unused
1267 * subpixel motion estimation compare function.
1268 * - encoding: set by user.
1269 * - decoding: unused
1273 * macroblock compare function (not supported yet).
1274 * - encoding: set by user.
1275 * - decoding: unused
1279 * interlaced dct compare function
1280 * - encoding: set by user.
1281 * - decoding: unused
1284 #define FF_CMP_SAD 0
1285 #define FF_CMP_SSE 1
1286 #define FF_CMP_SATD 2
1287 #define FF_CMP_DCT 3
1288 #define FF_CMP_PSNR 4
1289 #define FF_CMP_BIT 5
1291 #define FF_CMP_ZERO 7
1292 #define FF_CMP_VSAD 8
1293 #define FF_CMP_VSSE 9
1294 #define FF_CMP_NSSE 10
1295 #define FF_CMP_W53 11
1296 #define FF_CMP_W97 12
1297 #define FF_CMP_DCTMAX 13
1298 #define FF_CMP_CHROMA 256
1301 * ME diamond size & shape.
1302 * - encoding: set by user.
1303 * - decoding: unused
1308 * amount of previous MV predictors (2a+1 x 2a+1 square).
1309 * - encoding: set by user.
1310 * - decoding: unused
1312 int last_predictor_count;
1315 * pre pass for motion estimation.
1316 * - encoding: set by user.
1317 * - decoding: unused
1322 * motion estimation pre pass compare function.
1323 * - encoding: set by user.
1324 * - decoding: unused
1329 * ME pre pass diamond size & shape.
1330 * - encoding: set by user.
1331 * - decoding: unused
1336 * subpel ME quality.
1337 * - encoding: set by user.
1338 * - decoding: unused
1340 int me_subpel_quality;
1343 * callback to negotiate the pixelFormat.
1344 * @param fmt is the list of formats which are supported by the codec,
1345 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1346 * the first is allways the native one
1347 * @return the choosen format
1348 * - encoding: unused
1349 * - decoding: set by user, if not set then the native format will always be choosen
1351 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1354 * DTG active format information (additionnal aspect ratio
1355 * information only used in DVB MPEG2 transport streams). 0 if
1358 * - encoding: unused.
1359 * - decoding: set by decoder
1361 int dtg_active_format;
1362 #define FF_DTG_AFD_SAME 8
1363 #define FF_DTG_AFD_4_3 9
1364 #define FF_DTG_AFD_16_9 10
1365 #define FF_DTG_AFD_14_9 11
1366 #define FF_DTG_AFD_4_3_SP_14_9 13
1367 #define FF_DTG_AFD_16_9_SP_14_9 14
1368 #define FF_DTG_AFD_SP_4_3 15
1371 * Maximum motion estimation search range in subpel units.
1372 * if 0 then no limit
1374 * - encoding: set by user.
1375 * - decoding: unused.
1381 * for variable fps this is 1
1382 * - encoding: set by user.
1383 * - decoding: set by lavc.
1384 * @todo move this after frame_rate
1387 int frame_rate_base;
1389 * intra quantizer bias.
1390 * - encoding: set by user.
1391 * - decoding: unused
1393 int intra_quant_bias;
1394 #define FF_DEFAULT_QUANT_BIAS 999999
1397 * inter quantizer bias.
1398 * - encoding: set by user.
1399 * - decoding: unused
1401 int inter_quant_bias;
1405 * - encoding: unused.
1406 * - decoding: which clrtable should be used for 8bit RGB images
1407 * table have to be stored somewhere FIXME
1412 * internal_buffer count.
1413 * Dont touch, used by lavc default_get_buffer()
1415 int internal_buffer_count;
1419 * Dont touch, used by lavc default_get_buffer()
1421 void *internal_buffer;
1423 #define FF_LAMBDA_SHIFT 7
1424 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1425 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1426 #define FF_LAMBDA_MAX (256*128-1)
1428 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1430 * global quality for codecs which cannot change it per frame.
1431 * this should be proportional to MPEG1/2/4 qscale.
1432 * - encoding: set by user.
1433 * - decoding: unused
1437 #define FF_CODER_TYPE_VLC 0
1438 #define FF_CODER_TYPE_AC 1
1441 * - encoding: set by user.
1442 * - decoding: unused
1448 * - encoding: set by user.
1449 * - decoding: unused
1455 * - encoding: unused
1456 * - decoding: set by user.
1459 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1460 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1461 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1464 * XVideo Motion Acceleration
1465 * - encoding: forbidden
1466 * - decoding: set by decoder
1468 int xvmc_acceleration;
1471 * macroblock decision mode
1472 * - encoding: set by user.
1473 * - decoding: unused
1476 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1477 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1478 #define FF_MB_DECISION_RD 2 ///< rate distoration
1481 * custom intra quantization matrix
1482 * - encoding: set by user, can be NULL
1483 * - decoding: set by lavc
1485 uint16_t *intra_matrix;
1488 * custom inter quantization matrix
1489 * - encoding: set by user, can be NULL
1490 * - decoding: set by lavc
1492 uint16_t *inter_matrix;
1495 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1496 * this is used to workaround some encoder bugs
1497 * - encoding: unused
1498 * - decoding: set by user, will be converted to upper case by lavc during init
1500 unsigned int stream_codec_tag;
1503 * scene change detection threshold.
1504 * 0 is default, larger means fewer detected scene changes
1505 * - encoding: set by user.
1506 * - decoding: unused
1508 int scenechange_threshold;
1511 * minimum lagrange multipler
1512 * - encoding: set by user.
1513 * - decoding: unused
1518 * maximum lagrange multipler
1519 * - encoding: set by user.
1520 * - decoding: unused
1525 * Palette control structure
1526 * - encoding: ??? (no palette-enabled encoder yet)
1527 * - decoding: set by user.
1529 struct AVPaletteControl *palctrl;
1532 * noise reduction strength
1533 * - encoding: set by user.
1534 * - decoding: unused
1536 int noise_reduction;
1539 * called at the beginning of a frame to get cr buffer for it.
1540 * buffer type (size, hints) must be the same. lavc won't check it.
1541 * lavc will pass previous buffer in pic, function should return
1542 * same buffer or new buffer with old frame "painted" into it.
1543 * if pic.data[0] == NULL must behave like get_buffer().
1544 * - encoding: unused
1545 * - decoding: set by lavc, user can override
1547 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1550 * number of bits which should be loaded into the rc buffer before decoding starts
1551 * - encoding: set by user.
1552 * - decoding: unused
1554 int rc_initial_buffer_occupancy;
1558 * - encoding: set by user.
1559 * - decoding: unused
1561 int inter_threshold;
1565 * - encoding: set by user.
1566 * - decoding: set by user.
1571 * simulates errors in the bitstream to test error concealment.
1572 * - encoding: set by user.
1573 * - decoding: unused.
1578 * MP3 antialias algorithm, see FF_AA_* below.
1579 * - encoding: unused
1580 * - decoding: set by user
1583 #define FF_AA_AUTO 0
1584 #define FF_AA_FASTINT 1 //not implemented yet
1586 #define FF_AA_FLOAT 3
1588 * Quantizer noise shaping.
1589 * - encoding: set by user
1590 * - decoding: unused
1592 int quantizer_noise_shaping;
1596 * is used to decide how many independant tasks should be passed to execute()
1597 * - encoding: set by user
1598 * - decoding: set by user
1603 * the codec may call this to execute several independant things. it will return only after
1604 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1605 * default implementation will execute the parts serially
1606 * @param count the number of things to execute
1607 * - encoding: set by lavc, user can override
1608 * - decoding: set by lavc, user can override
1610 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1614 * can be used by execute() to store some per AVCodecContext stuff.
1615 * - encoding: set by execute()
1616 * - decoding: set by execute()
1618 void *thread_opaque;
1621 * Motion estimation threshold. under which no motion estimation is
1622 * performed, but instead the user specified motion vectors are used
1624 * - encoding: set by user
1625 * - decoding: unused
1630 * Macroblock threshold. under which the user specified macroblock types will be used
1631 * - encoding: set by user
1632 * - decoding: unused
1637 * precision of the intra dc coefficient - 8.
1638 * - encoding: set by user
1639 * - decoding: unused
1641 int intra_dc_precision;
1644 * noise vs. sse weight for the nsse comparsion function.
1645 * - encoding: set by user
1646 * - decoding: unused
1651 * number of macroblock rows at the top which are skiped.
1652 * - encoding: unused
1653 * - decoding: set by user
1658 * number of macroblock rows at the bottom which are skiped.
1659 * - encoding: unused
1660 * - decoding: set by user
1666 * - encoding: set by user
1667 * - decoding: set by lavc
1670 #define FF_PROFILE_UNKNOWN -99
1674 * - encoding: set by user
1675 * - decoding: set by lavc
1678 #define FF_LEVEL_UNKNOWN -99
1681 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1682 * - encoding: unused
1683 * - decoding: set by user
1688 * bitsream width / height. may be different from width/height if lowres
1689 * or other things are used
1690 * - encoding: unused
1691 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1693 int coded_width, coded_height;
1696 * frame skip threshold
1697 * - encoding: set by user
1698 * - decoding: unused
1700 int frame_skip_threshold;
1704 * - encoding: set by user
1705 * - decoding: unused
1707 int frame_skip_factor;
1710 * frame skip exponent
1711 * - encoding: set by user
1712 * - decoding: unused
1717 * frame skip comparission function
1718 * - encoding: set by user.
1719 * - decoding: unused
1728 typedef struct AVOption {
1729 /** options' name */
1730 const char *name; /* if name is NULL, it indicates a link to next */
1731 /** short English text help or const struct AVOption* subpointer */
1732 const char *help; // const struct AVOption* sub;
1733 /** offset to context structure where the parsed value should be stored */
1735 /** options' type */
1737 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1738 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1739 #define FF_OPT_TYPE_INT 3 ///< integer
1740 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1741 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1742 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1743 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1744 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1745 /** min value (min == max -> no limits) */
1747 /** maximum value for double/int */
1749 /** default boo [0,1]l/double/int value */
1752 * default string value (with optional semicolon delimited extra option-list
1753 * i.e. option1;option2;option3
1754 * defval might select other then first argument as default
1757 #define FF_OPT_MAX_DEPTH 10
1761 * Parse option(s) and sets fields in passed structure
1762 * @param strct structure where the parsed results will be written
1763 * @param list list with AVOptions
1764 * @param opts string with options for parsing
1766 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1772 typedef struct AVCodec {
1774 enum CodecType type;
1777 int (*init)(AVCodecContext *);
1778 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1779 int (*close)(AVCodecContext *);
1780 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1781 uint8_t *buf, int buf_size);
1783 const AVOption *options;
1784 struct AVCodec *next;
1785 void (*flush)(AVCodecContext *);
1786 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1787 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1791 * four components are given, that's all.
1792 * the last component is alpha
1794 typedef struct AVPicture {
1796 int linesize[4]; ///< number of bytes per line
1801 * This structure defines a method for communicating palette changes
1802 * between and demuxer and a decoder.
1804 #define AVPALETTE_SIZE 1024
1805 #define AVPALETTE_COUNT 256
1806 typedef struct AVPaletteControl {
1808 /* demuxer sets this to 1 to indicate the palette has changed;
1809 * decoder resets to 0 */
1810 int palette_changed;
1812 /* 4-byte ARGB palette entries, stored in native byte order; note that
1813 * the individual palette components should be on a 8-bit scale; if
1814 * the palette data comes from a IBM VGA native format, the component
1815 * data is probably 6 bits in size and needs to be scaled */
1816 unsigned int palette[AVPALETTE_COUNT];
1820 extern AVCodec ac3_encoder;
1821 extern AVCodec mp2_encoder;
1822 extern AVCodec mp3lame_encoder;
1823 extern AVCodec oggvorbis_encoder;
1824 extern AVCodec faac_encoder;
1825 extern AVCodec xvid_encoder;
1826 extern AVCodec mpeg1video_encoder;
1827 extern AVCodec mpeg2video_encoder;
1828 extern AVCodec h261_encoder;
1829 extern AVCodec h263_encoder;
1830 extern AVCodec h263p_encoder;
1831 extern AVCodec flv_encoder;
1832 extern AVCodec rv10_encoder;
1833 extern AVCodec rv20_encoder;
1834 extern AVCodec dvvideo_encoder;
1835 extern AVCodec mjpeg_encoder;
1836 extern AVCodec ljpeg_encoder;
1837 extern AVCodec png_encoder;
1838 extern AVCodec ppm_encoder;
1839 extern AVCodec pgm_encoder;
1840 extern AVCodec pgmyuv_encoder;
1841 extern AVCodec pbm_encoder;
1842 extern AVCodec pam_encoder;
1843 extern AVCodec mpeg4_encoder;
1844 extern AVCodec msmpeg4v1_encoder;
1845 extern AVCodec msmpeg4v2_encoder;
1846 extern AVCodec msmpeg4v3_encoder;
1847 extern AVCodec wmv1_encoder;
1848 extern AVCodec wmv2_encoder;
1849 extern AVCodec huffyuv_encoder;
1850 extern AVCodec ffvhuff_encoder;
1851 extern AVCodec h264_encoder;
1852 extern AVCodec asv1_encoder;
1853 extern AVCodec asv2_encoder;
1854 extern AVCodec vcr1_encoder;
1855 extern AVCodec ffv1_encoder;
1856 extern AVCodec snow_encoder;
1857 extern AVCodec mdec_encoder;
1858 extern AVCodec zlib_encoder;
1859 extern AVCodec sonic_encoder;
1860 extern AVCodec sonic_ls_encoder;
1861 extern AVCodec svq1_encoder;
1863 extern AVCodec h263_decoder;
1864 extern AVCodec h261_decoder;
1865 extern AVCodec mpeg4_decoder;
1866 extern AVCodec msmpeg4v1_decoder;
1867 extern AVCodec msmpeg4v2_decoder;
1868 extern AVCodec msmpeg4v3_decoder;
1869 extern AVCodec wmv1_decoder;
1870 extern AVCodec wmv2_decoder;
1871 extern AVCodec mpeg1video_decoder;
1872 extern AVCodec mpeg2video_decoder;
1873 extern AVCodec mpegvideo_decoder;
1874 extern AVCodec mpeg_xvmc_decoder;
1875 extern AVCodec h263i_decoder;
1876 extern AVCodec flv_decoder;
1877 extern AVCodec rv10_decoder;
1878 extern AVCodec rv20_decoder;
1879 extern AVCodec svq1_decoder;
1880 extern AVCodec svq3_decoder;
1881 extern AVCodec dvvideo_decoder;
1882 extern AVCodec wmav1_decoder;
1883 extern AVCodec wmav2_decoder;
1884 extern AVCodec mjpeg_decoder;
1885 extern AVCodec mjpegb_decoder;
1886 extern AVCodec sp5x_decoder;
1887 extern AVCodec png_decoder;
1888 extern AVCodec mp2_decoder;
1889 extern AVCodec mp3_decoder;
1890 extern AVCodec mace3_decoder;
1891 extern AVCodec mace6_decoder;
1892 extern AVCodec huffyuv_decoder;
1893 extern AVCodec ffvhuff_decoder;
1894 extern AVCodec oggvorbis_decoder;
1895 extern AVCodec cyuv_decoder;
1896 extern AVCodec h264_decoder;
1897 extern AVCodec indeo3_decoder;
1898 extern AVCodec vp3_decoder;
1899 extern AVCodec theora_decoder;
1900 extern AVCodec amr_nb_decoder;
1901 extern AVCodec amr_nb_encoder;
1902 extern AVCodec amr_wb_encoder;
1903 extern AVCodec amr_wb_decoder;
1904 extern AVCodec aac_decoder;
1905 extern AVCodec mpeg4aac_decoder;
1906 extern AVCodec asv1_decoder;
1907 extern AVCodec asv2_decoder;
1908 extern AVCodec vcr1_decoder;
1909 extern AVCodec cljr_decoder;
1910 extern AVCodec ffv1_decoder;
1911 extern AVCodec snow_decoder;
1912 extern AVCodec fourxm_decoder;
1913 extern AVCodec mdec_decoder;
1914 extern AVCodec roq_decoder;
1915 extern AVCodec interplay_video_decoder;
1916 extern AVCodec xan_wc3_decoder;
1917 extern AVCodec rpza_decoder;
1918 extern AVCodec cinepak_decoder;
1919 extern AVCodec msrle_decoder;
1920 extern AVCodec msvideo1_decoder;
1921 extern AVCodec vqa_decoder;
1922 extern AVCodec idcin_decoder;
1923 extern AVCodec eightbps_decoder;
1924 extern AVCodec smc_decoder;
1925 extern AVCodec flic_decoder;
1926 extern AVCodec vmdvideo_decoder;
1927 extern AVCodec vmdaudio_decoder;
1928 extern AVCodec truemotion1_decoder;
1929 extern AVCodec mszh_decoder;
1930 extern AVCodec zlib_decoder;
1931 extern AVCodec ra_144_decoder;
1932 extern AVCodec ra_288_decoder;
1933 extern AVCodec roq_dpcm_decoder;
1934 extern AVCodec interplay_dpcm_decoder;
1935 extern AVCodec xan_dpcm_decoder;
1936 extern AVCodec sol_dpcm_decoder;
1937 extern AVCodec sonic_decoder;
1938 extern AVCodec qtrle_decoder;
1939 extern AVCodec flac_decoder;
1940 extern AVCodec tscc_decoder;
1941 extern AVCodec ulti_decoder;
1942 extern AVCodec qdraw_decoder;
1943 extern AVCodec xl_decoder;
1944 extern AVCodec qpeg_decoder;
1947 #define PCM_CODEC(id, name) \
1948 extern AVCodec name ## _decoder; \
1949 extern AVCodec name ## _encoder
1951 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1952 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1953 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1954 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1955 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1956 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1957 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1958 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1962 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1963 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1964 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1965 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1966 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1967 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1968 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1969 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1970 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1971 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1972 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1973 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1974 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
1978 /* dummy raw video codec */
1979 extern AVCodec rawvideo_encoder;
1980 extern AVCodec rawvideo_decoder;
1982 /* the following codecs use external GPL libs */
1983 extern AVCodec ac3_decoder;
1984 extern AVCodec dts_decoder;
1988 struct ReSampleContext;
1989 struct AVResampleContext;
1991 typedef struct ReSampleContext ReSampleContext;
1993 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1994 int output_rate, int input_rate);
1995 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1996 void audio_resample_close(ReSampleContext *s);
1998 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
1999 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
2000 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
2001 void av_resample_close(struct AVResampleContext *c);
2003 /* YUV420 format is assumed ! */
2005 struct ImgReSampleContext;
2007 typedef struct ImgReSampleContext ImgReSampleContext;
2009 ImgReSampleContext *img_resample_init(int output_width, int output_height,
2010 int input_width, int input_height);
2012 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
2013 int iwidth, int iheight,
2014 int topBand, int bottomBand,
2015 int leftBand, int rightBand,
2016 int padtop, int padbottom,
2017 int padleft, int padright);
2020 void img_resample(ImgReSampleContext *s,
2021 AVPicture *output, const AVPicture *input);
2023 void img_resample_close(ImgReSampleContext *s);
2026 * Allocate memory for a picture. Call avpicture_free to free it.
2028 * @param picture the picture to be filled in.
2029 * @param pix_fmt the format of the picture.
2030 * @param width the width of the picture.
2031 * @param height the height of the picture.
2032 * @return 0 if successful, -1 if not.
2034 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2036 /* Free a picture previously allocated by avpicture_alloc. */
2037 void avpicture_free(AVPicture *picture);
2039 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2040 int pix_fmt, int width, int height);
2041 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2042 unsigned char *dest, int dest_size);
2043 int avpicture_get_size(int pix_fmt, int width, int height);
2044 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2045 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2046 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2047 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2048 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2050 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2051 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2052 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2053 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2054 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2055 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2057 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2059 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2060 int has_alpha, int *loss_ptr);
2062 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2063 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2064 int img_get_alpha_info(const AVPicture *src,
2065 int pix_fmt, int width, int height);
2067 /* convert among pixel formats */
2068 int img_convert(AVPicture *dst, int dst_pix_fmt,
2069 const AVPicture *src, int pix_fmt,
2070 int width, int height);
2072 /* deinterlace a picture */
2073 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2074 int pix_fmt, int width, int height);
2076 /* external high level API */
2078 extern AVCodec *first_avcodec;
2080 /* returns LIBAVCODEC_VERSION_INT constant */
2081 unsigned avcodec_version(void);
2082 /* returns LIBAVCODEC_BUILD constant */
2083 unsigned avcodec_build(void);
2084 void avcodec_init(void);
2086 void register_avcodec(AVCodec *format);
2087 AVCodec *avcodec_find_encoder(enum CodecID id);
2088 AVCodec *avcodec_find_encoder_by_name(const char *name);
2089 AVCodec *avcodec_find_decoder(enum CodecID id);
2090 AVCodec *avcodec_find_decoder_by_name(const char *name);
2091 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2093 void avcodec_get_context_defaults(AVCodecContext *s);
2094 AVCodecContext *avcodec_alloc_context(void);
2095 void avcodec_get_frame_defaults(AVFrame *pic);
2096 AVFrame *avcodec_alloc_frame(void);
2098 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2099 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2100 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2101 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2102 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2104 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2105 void avcodec_thread_free(AVCodecContext *s);
2106 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2107 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2108 //FIXME func typedef
2111 * opens / inits the AVCodecContext.
2114 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2116 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2117 int *frame_size_ptr,
2118 uint8_t *buf, int buf_size);
2119 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2120 int *got_picture_ptr,
2121 uint8_t *buf, int buf_size);
2122 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2124 uint8_t *buf, int buf_size);
2125 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2126 const short *samples);
2127 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2128 const AVFrame *pict);
2130 int avcodec_close(AVCodecContext *avctx);
2132 void avcodec_register_all(void);
2134 void avcodec_flush_buffers(AVCodecContext *avctx);
2136 /* misc usefull functions */
2139 * returns a single letter to describe the picture type
2141 char av_get_pict_type_char(int pict_type);
2144 * reduce a fraction.
2145 * this is usefull for framerate calculations
2146 * @param max the maximum allowed for dst_nom & dst_den
2147 * @return 1 if exact, 0 otherwise
2149 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2152 * rescale a 64bit integer with rounding to nearest.
2153 * a simple a*b/c isnt possible as it can overflow
2155 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2158 * rescale a 64bit integer with specified rounding.
2159 * a simple a*b/c isnt possible as it can overflow
2161 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2164 typedef struct AVCodecParserContext {
2166 struct AVCodecParser *parser;
2167 int64_t frame_offset; /* offset of the current frame */
2168 int64_t cur_offset; /* current offset
2169 (incremented by each av_parser_parse()) */
2170 int64_t last_frame_offset; /* offset of the last frame */
2172 int pict_type; /* XXX: put it back in AVCodecContext */
2173 int repeat_pict; /* XXX: put it back in AVCodecContext */
2174 int64_t pts; /* pts of the current frame */
2175 int64_t dts; /* dts of the current frame */
2180 int fetch_timestamp;
2182 #define AV_PARSER_PTS_NB 4
2183 int cur_frame_start_index;
2184 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2185 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2186 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2187 } AVCodecParserContext;
2189 typedef struct AVCodecParser {
2190 int codec_ids[5]; /* several codec IDs are permitted */
2192 int (*parser_init)(AVCodecParserContext *s);
2193 int (*parser_parse)(AVCodecParserContext *s,
2194 AVCodecContext *avctx,
2195 uint8_t **poutbuf, int *poutbuf_size,
2196 const uint8_t *buf, int buf_size);
2197 void (*parser_close)(AVCodecParserContext *s);
2198 struct AVCodecParser *next;
2201 extern AVCodecParser *av_first_parser;
2203 void av_register_codec_parser(AVCodecParser *parser);
2204 AVCodecParserContext *av_parser_init(int codec_id);
2205 int av_parser_parse(AVCodecParserContext *s,
2206 AVCodecContext *avctx,
2207 uint8_t **poutbuf, int *poutbuf_size,
2208 const uint8_t *buf, int buf_size,
2209 int64_t pts, int64_t dts);
2210 void av_parser_close(AVCodecParserContext *s);
2212 extern AVCodecParser mpegvideo_parser;
2213 extern AVCodecParser mpeg4video_parser;
2214 extern AVCodecParser h261_parser;
2215 extern AVCodecParser h263_parser;
2216 extern AVCodecParser h264_parser;
2217 extern AVCodecParser mjpeg_parser;
2218 extern AVCodecParser pnm_parser;
2219 extern AVCodecParser mpegaudio_parser;
2220 extern AVCodecParser ac3_parser;
2223 void *av_malloc(unsigned int size);
2224 void *av_mallocz(unsigned int size);
2225 void *av_realloc(void *ptr, unsigned int size);
2226 void av_free(void *ptr);
2227 char *av_strdup(const char *s);
2228 void av_freep(void *ptr);
2229 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2230 /* for static data only */
2231 /* call av_free_static to release all staticaly allocated tables */
2232 void av_free_static(void);
2233 void *av_mallocz_static(unsigned int size);
2234 void *av_realloc_static(void *ptr, unsigned int size);
2236 /* add by bero : in adx.c */
2237 int is_adx(const unsigned char *buf,size_t bufsize);
2239 void img_copy(AVPicture *dst, const AVPicture *src,
2240 int pix_fmt, int width, int height);
2246 #define AV_LOG_QUIET -1
2247 #define AV_LOG_ERROR 0
2248 #define AV_LOG_INFO 1
2249 #define AV_LOG_DEBUG 2
2252 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2254 extern void av_log(void*, int level, const char *fmt, ...);
2257 extern void av_vlog(void*, int level, const char *fmt, va_list);
2258 extern int av_log_get_level(void);
2259 extern void av_log_set_level(int);
2260 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2263 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2264 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2265 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2266 (((uint8_t*)(x))[1] << 16) | \
2267 (((uint8_t*)(x))[2] << 8) | \
2269 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2270 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2271 (((uint8_t*)(x))[2] << 16) | \
2272 (((uint8_t*)(x))[1] << 8) | \
2280 #endif /* AVCODEC_H */