16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000408
19 #define FFMPEG_VERSION "0.4.8"
20 #define LIBAVCODEC_BUILD 4693
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)
32 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
33 CODEC_ID_MPEG2VIDEO_XVMC,
38 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
79 CODEC_ID_INTERPLAY_VIDEO,
92 /* various pcm "codecs" */
102 /* various adpcm codecs */
103 CODEC_ID_ADPCM_IMA_QT,
104 CODEC_ID_ADPCM_IMA_WAV,
105 CODEC_ID_ADPCM_IMA_DK3,
106 CODEC_ID_ADPCM_IMA_DK4,
107 CODEC_ID_ADPCM_IMA_WS,
117 /* RealAudio codecs*/
121 /* various DPCM codecs */
123 CODEC_ID_INTERPLAY_DPCM,
126 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
127 stream (only used by libavformat) */
130 /* CODEC_ID_MP3LAME is absolete */
131 #define CODEC_ID_MP3LAME CODEC_ID_MP3
134 CODEC_TYPE_UNKNOWN = -1,
141 * Pixel format. Notes:
143 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
144 * color is put together as:
145 * (A << 24) | (R << 16) | (G << 8) | B
146 * This is stored as BGRA on little endian CPU architectures and ARGB on
149 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
150 * image data is stored in AVFrame.data[0]. The palette is transported in
151 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
152 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
153 * also endian-specific). Note also that the individual RGB palette
154 * components stored in AVFrame.data[1] should be in the range 0..255.
155 * This is important as many custom PAL8 video codecs that were designed
156 * to run on the IBM VGA graphics adapter use 6-bit palette components.
159 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
161 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
162 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
163 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
164 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
165 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
166 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
167 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
168 PIX_FMT_RGB565, ///< always stored in cpu endianness
169 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
171 PIX_FMT_MONOWHITE, ///< 0 is white
172 PIX_FMT_MONOBLACK, ///< 0 is black
173 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
174 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
175 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
176 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
177 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
178 PIX_FMT_XVMC_MPEG2_IDCT,
182 /* currently unused, may be used if 24/32 bits samples ever supported */
184 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
188 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
191 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
192 * this is mainly needed because some optimized bitstream readers read
193 * 32 or 64 bit at once and could read over the end<br>
194 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
195 * MPEG bitstreams could cause overread and segfault
197 #define FF_INPUT_BUFFER_PADDING_SIZE 8
199 /* motion estimation type, EPZS by default */
209 typedef struct RcOverride{
212 int qscale; // if this is 0 then quality_factor will be used instead
213 float quality_factor;
216 /* only for ME compatiblity with old apps */
217 extern int motion_estimation_method;
219 /* ME algos sorted by quality */
221 static const __attribute__((unused)) int Motion_Est_QTab[] =
222 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
225 #define FF_MAX_B_FRAMES 8
228 these flags can be passed in AVCodecContext.flags before initing
229 Note: note not everything is supported yet
232 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
233 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
234 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
235 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
236 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
237 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
238 /* parent program gurantees that the input for b-frame containing streams is not written to
239 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
240 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
241 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
242 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
243 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
244 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
245 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
246 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
247 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
248 of only at frame boundaries */
249 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
250 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
251 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
252 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
253 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
254 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
255 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
256 /* Fx : Flag for h263+ extra options */
257 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
258 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
259 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
260 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
261 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
262 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
263 /* For advanced prediction mode, we reuse the 4MV flag */
264 /* Unsupported options :
265 * Syntax Arithmetic coding (SAC)
266 * Deblocking filter internal loop
268 * Reference Picture Selection
269 * Independant Segment Decoding
270 * Modified Quantization */
272 /* codec capabilities */
274 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
276 * Codec uses get_buffer() for allocating buffers.
277 * direct rendering method 1
279 #define CODEC_CAP_DR1 0x0002
280 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
282 #define CODEC_CAP_PARSE_ONLY 0x0004
283 #define CODEC_CAP_TRUNCATED 0x0008
287 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
289 typedef struct AVPanScan{
292 * - encoding: set by user.
293 * - decoding: set by lavc
298 * width and height in 1/16 pel
299 * - encoding: set by user.
300 * - decoding: set by lavc
306 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
307 * - encoding: set by user.
308 * - decoding: set by lavc
310 int16_t position[3][2];
313 #define FF_COMMON_FRAME \
315 * pointer to the picture planes.\
316 * this might be different from the first allocated byte\
323 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
324 * this isnt used by lavc unless the default get/release_buffer() is used\
330 * 1 -> keyframe, 0-> not\
331 * - encoding: set by lavc\
332 * - decoding: set by lavc\
337 * picture type of the frame, see ?_TYPE below.\
338 * - encoding: set by lavc for coded_picture (and set by user for input)\
339 * - decoding: set by lavc\
344 * presentation timestamp in micro seconds (time when frame should be shown to user)\
345 * if 0 then the frame_rate will be used as reference\
346 * - encoding: MUST be set by user\
347 * - decoding: set by lavc\
352 * picture number in bitstream order.\
353 * - encoding: set by\
354 * - decoding: set by lavc\
356 int coded_picture_number;\
358 * picture number in display order.\
359 * - encoding: set by\
360 * - decoding: set by lavc\
362 int display_picture_number;\
365 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
366 * - encoding: set by lavc for coded_picture (and set by user for input)\
367 * - decoding: set by lavc\
372 * buffer age (1->was last buffer and dint change, 2->..., ...).\
373 * set to INT_MAX if the buffer has not been used yet \
374 * - encoding: unused\
375 * - decoding: MUST be set by get_buffer()\
380 * is this picture used as reference\
381 * - encoding: unused\
382 * - decoding: set by lavc (before get_buffer() call))\
388 * - encoding: unused\
389 * - decoding: set by lavc\
391 int8_t *qscale_table;\
394 * - encoding: unused\
395 * - decoding: set by lavc\
400 * mbskip_table[mb]>=1 if MB didnt change\
401 * stride= mb_width = (width+15)>>4\
402 * - encoding: unused\
403 * - decoding: set by lavc\
405 uint8_t *mbskip_table;\
408 * for some private data of the user\
409 * - encoding: unused\
410 * - decoding: set by user\
416 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
417 * - decoding: unused\
422 * type of the buffer (to keep track of who has to dealloc data[*])\
423 * - encoding: set by the one who allocs it\
424 * - decoding: set by the one who allocs it\
425 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
430 * when decoding, this signal how much the picture must be delayed.\
431 * extra_delay = repeat_pict / (2*fps)\
432 * - encoding: unused\
433 * - decoding: set by lavc\
443 * The content of the picture is interlaced.\
444 * - encoding: set by user\
445 * - decoding: set by lavc (default 0)\
447 int interlaced_frame;\
450 * if the content is interlaced, is top field displayed first.\
451 * - encoding: set by user\
452 * - decoding: set by lavc\
454 int top_field_first;\
458 * - encoding: set by user\
459 * - decoding: set by lavc\
461 AVPanScan *pan_scan;\
464 * tell user application that palette has changed from previous frame.\
465 * - encoding: ??? (no palette-enabled encoder yet)\
466 * - decoding: set by lavc (default 0)\
468 int palette_has_changed;\
471 * Codec suggestion on buffer type if != 0\
472 * - encoding: unused\
473 * - decoding: set by lavc (before get_buffer() call))\
477 #define FF_QSCALE_TYPE_MPEG1 0
478 #define FF_QSCALE_TYPE_MPEG2 1
480 #define FF_BUFFER_TYPE_INTERNAL 1
481 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
482 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
483 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
486 #define FF_I_TYPE 1 // Intra
487 #define FF_P_TYPE 2 // Predicted
488 #define FF_B_TYPE 3 // Bi-dir predicted
489 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
493 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
494 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
495 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
496 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
501 typedef struct AVFrame {
505 #define DEFAULT_FRAME_RATE_BASE 1001000
508 * main external api structure.
510 typedef struct AVCodecContext {
512 * the average bitrate.
513 * - encoding: set by user. unused for constant quantizer encoding
514 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
519 * number of bits the bitstream is allowed to diverge from the reference.
520 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
521 * - encoding: set by user. unused for constant quantizer encoding
524 int bit_rate_tolerance;
528 * - encoding: set by user.
529 * - decoding: set by user.
534 * some codecs needs additionnal format info. It is stored here
535 * - encoding: set by user.
536 * - decoding: set by lavc. (FIXME is this ok?)
541 * motion estimation algorithm used for video coding.
542 * - encoding: MUST be set by user.
548 * some codecs need / can use extra-data like huffman tables.
549 * mjpeg: huffman tables
550 * rv10: additional flags
551 * mpeg4: global headers (they can be in the bitstream or here)
552 * - encoding: set/allocated/freed by lavc.
553 * - decoding: set/allocated/freed by user.
560 * frames per sec multiplied by frame_rate_base.
561 * for variable fps this is the precission, so if the timestamps
562 * can be specified in msec precssion then this is 1000*frame_rate_base
563 * - encoding: MUST be set by user
564 * - decoding: set by lavc. 0 or the frame_rate if available
570 * - encoding: MUST be set by user.
571 * - decoding: set by user if known, codec should override / dynamically change if needed
575 #define FF_ASPECT_SQUARE 1
576 #define FF_ASPECT_4_3_625 2
577 #define FF_ASPECT_4_3_525 3
578 #define FF_ASPECT_16_9_625 4
579 #define FF_ASPECT_16_9_525 5
580 #define FF_ASPECT_EXTENDED 15
583 * the number of pictures in a group of pitures, or 0 for intra_only.
584 * - encoding: set by user.
590 * pixel format, see PIX_FMT_xxx.
591 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
592 * conversion is in order. This only works for
593 * codecs with one supported pix_fmt, we should
594 * do something for a generic case as well.
595 * - decoding: set by lavc.
597 enum PixelFormat pix_fmt;
600 * Frame rate emulation. If not zero lower layer (i.e. format handler)
601 * has to read frames at native frame rate.
602 * - encoding: set by user.
603 * - decoding: unused.
608 * if non NULL, 'draw_horiz_band' is called by the libavcodec
609 * decoder to draw an horizontal band. It improve cache usage. Not
610 * all codecs can do that. You must check the codec capabilities
613 * - decoding: set by user.
614 * @param height the height of the slice
615 * @param y the y position of the slice
616 * @param type 1->top field, 2->bottom field, 3->frame
617 * @param offset offset into the AVFrame.data from which the slice should be read
619 void (*draw_horiz_band)(struct AVCodecContext *s,
620 const AVFrame *src, int offset[4],
621 int y, int type, int height);
624 int sample_rate; ///< samples per sec
626 int sample_fmt; ///< sample format, currenly unused
628 /* the following data should not be initialized */
629 int frame_size; ///< in samples, initialized when calling 'init'
630 int frame_number; ///< audio or video frame number
631 int real_pict_num; ///< returns the real picture number of previous encoded frame
634 * number of frames the decoded output will be delayed relative to
636 * - encoding: set by lavc.
641 /* - encoding parameters */
642 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
643 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
647 * - encoding: set by user.
654 * - encoding: set by user.
660 * maximum quantizer difference etween frames.
661 * - encoding: set by user.
667 * maximum number of b frames between non b frames.
668 * note: the output will be delayed by max_b_frames+1 relative to the input
669 * - encoding: set by user.
675 * qscale factor between ip and b frames.
676 * - encoding: set by user.
679 float b_quant_factor;
681 /** obsolete FIXME remove */
683 int b_frame_strategy;
688 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
692 struct AVCodec *codec;
696 /* The following data is for RTP friendly coding */
697 /* By now only H.263/H.263+/MPEG4 coder honours this */
698 int rtp_mode; /* 1 for activate RTP friendly-mode */
699 /* highers numbers represent more error-prone */
700 /* enviroments, by now just "1" exist */
702 int rtp_payload_size; /* The size of the RTP payload, the coder will */
703 /* do it's best to deliver a chunk with size */
704 /* below rtp_payload_size, the chunk will start */
705 /* with a start code on some codecs like H.263 */
706 /* This doesn't take account of any particular */
707 /* headers inside the transmited RTP payload */
710 /* The RTP callcack: This function is called */
711 /* every time the encoder as a packet to send */
712 /* Depends on the encoder if the data starts */
713 /* with a Start Code (it should) H.263 does */
714 void (*rtp_callback)(void *data, int size, int packet_number);
716 /* statistics, used for 2-pass encoding */
727 * number of bits used for the previously encoded frame.
728 * - encoding: set by lavc
734 * private data of the user, can be used to carry app specific stuff.
735 * - encoding: set by user
736 * - decoding: set by user
741 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
742 enum CodecID codec_id; /* see CODEC_ID_xxx */
745 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
746 * this is used to workaround some encoder bugs
747 * - encoding: set by user, if not then the default based on codec_id will be used
748 * - decoding: set by user, will be converted to upper case by lavc during init
750 unsigned int codec_tag;
753 * workaround bugs in encoders which sometimes cannot be detected automatically.
755 * - decoding: set by user
758 #define FF_BUG_AUTODETECT 1 ///< autodetection
759 #define FF_BUG_OLD_MSMPEG4 2
760 #define FF_BUG_XVID_ILACE 4
761 #define FF_BUG_UMP4 8
762 #define FF_BUG_NO_PADDING 16
763 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
764 #define FF_BUG_QPEL_CHROMA 64
765 #define FF_BUG_STD_QPEL 128
766 #define FF_BUG_QPEL_CHROMA2 256
767 #define FF_BUG_DIRECT_BLOCKSIZE 512
768 #define FF_BUG_EDGE 1024
769 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
772 * luma single coeff elimination threshold.
773 * - encoding: set by user
776 int luma_elim_threshold;
779 * chroma single coeff elimination threshold.
780 * - encoding: set by user
783 int chroma_elim_threshold;
786 * strictly follow the std (MPEG4, ...).
787 * - encoding: set by user
790 int strict_std_compliance;
793 * qscale offset between ip and b frames.
794 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
795 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
796 * - encoding: set by user.
799 float b_quant_offset;
802 * error resilience higher values will detect more errors but may missdetect
803 * some more or less valid parts as errors.
805 * - decoding: set by user
807 int error_resilience;
808 #define FF_ER_CAREFULL 1
809 #define FF_ER_COMPLIANT 2
810 #define FF_ER_AGGRESSIVE 3
811 #define FF_ER_VERY_AGGRESSIVE 4
814 * called at the beginning of each frame to get a buffer for it.
815 * if pic.reference is set then the frame will be read later by lavc
816 * width and height should be rounded up to the next multiple of 16
818 * - decoding: set by lavc, user can override
820 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
823 * called to release buffers which where allocated with get_buffer.
824 * a released buffer can be reused in get_buffer()
825 * pic.data[*] must be set to NULL
827 * - decoding: set by lavc, user can override
829 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
832 * is 1 if the decoded stream contains b frames, 0 otherwise.
834 * - decoding: set by lavc
838 int block_align; ///< used by some WAV based audio codecs
840 int parse_only; /* - decoding only: if true, only parsing is done
841 (function avcodec_parse_frame()). The frame
842 data is returned. Only MPEG codecs support this now. */
845 * 0-> h263 quant 1-> mpeg quant.
846 * - encoding: set by user.
852 * pass1 encoding statistics output buffer.
853 * - encoding: set by lavc
859 * pass2 encoding statistics input buffer.
860 * concatenated stuff from stats_out of pass1 should be placed here
861 * - encoding: allocated/set/freed by user
867 * ratecontrol qmin qmax limiting method.
868 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
869 * - encoding: set by user.
878 * ratecontrol override, see RcOverride.
879 * - encoding: allocated/set/freed by user.
882 RcOverride *rc_override;
883 int rc_override_count;
886 * rate control equation.
887 * - encoding: set by user
894 * - encoding: set by user.
901 * - encoding: set by user.
907 * decoder bitstream buffer size.
908 * - encoding: set by user.
912 float rc_buffer_aggressivity;
915 * qscale factor between p and i frames.
916 * - encoding: set by user.
919 float i_quant_factor;
922 * qscale offset between p and i frames.
923 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
924 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
925 * - encoding: set by user.
928 float i_quant_offset;
931 * initial complexity for pass1 ratecontrol.
932 * - encoding: set by user.
935 float rc_initial_cplx;
938 * dct algorithm, see FF_DCT_* below.
939 * - encoding: set by user
943 #define FF_DCT_AUTO 0
944 #define FF_DCT_FASTINT 1
947 #define FF_DCT_MLIB 4
948 #define FF_DCT_ALTIVEC 5
949 #define FF_DCT_FAAN 6
952 * luminance masking (0-> disabled).
953 * - encoding: set by user
959 * temporary complexity masking (0-> disabled).
960 * - encoding: set by user
963 float temporal_cplx_masking;
966 * spatial complexity masking (0-> disabled).
967 * - encoding: set by user
970 float spatial_cplx_masking;
973 * p block masking (0-> disabled).
974 * - encoding: set by user
980 * darkness masking (0-> disabled).
981 * - encoding: set by user
987 /* for binary compatibility */
991 * idct algorithm, see FF_IDCT_* below.
992 * - encoding: set by user
993 * - decoding: set by user
996 #define FF_IDCT_AUTO 0
997 #define FF_IDCT_INT 1
998 #define FF_IDCT_SIMPLE 2
999 #define FF_IDCT_SIMPLEMMX 3
1000 #define FF_IDCT_LIBMPEG2MMX 4
1001 #define FF_IDCT_PS2 5
1002 #define FF_IDCT_MLIB 6
1003 #define FF_IDCT_ARM 7
1004 #define FF_IDCT_ALTIVEC 8
1005 #define FF_IDCT_SH4 9
1006 #define FF_IDCT_SIMPLEARM 10
1010 * - encoding: set by lavc
1011 * - decoding: set by user (or 0)
1015 * slice offsets in the frame in bytes.
1016 * - encoding: set/allocated by lavc
1017 * - decoding: set/allocated by user (or NULL)
1022 * error concealment flags.
1023 * - encoding: unused
1024 * - decoding: set by user
1026 int error_concealment;
1027 #define FF_EC_GUESS_MVS 1
1028 #define FF_EC_DEBLOCK 2
1031 * dsp_mask could be add used to disable unwanted CPU features
1032 * CPU features (i.e. MMX, SSE. ...)
1034 * with FORCE flag you may instead enable given CPU features
1035 * (Dangerous: usable in case of misdetection, improper usage however will
1036 * result into program crash)
1039 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1040 /* lower 16 bits - CPU features */
1042 #define FF_MM_MMX 0x0001 /* standard MMX */
1043 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1044 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1045 #define FF_MM_SSE 0x0008 /* SSE functions */
1046 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1047 #endif /* HAVE_MMX */
1050 * bits per sample/pixel from the demuxer (needed for huffyuv).
1051 * - encoding: set by lavc
1052 * - decoding: set by user
1054 int bits_per_sample;
1057 * prediction method (needed for huffyuv).
1058 * - encoding: set by user
1059 * - decoding: unused
1061 int prediction_method;
1062 #define FF_PRED_LEFT 0
1063 #define FF_PRED_PLANE 1
1064 #define FF_PRED_MEDIAN 2
1067 * sample aspect ratio (0 if unknown).
1068 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1069 * - encoding: set by user.
1070 * - decoding: set by lavc.
1072 AVRational sample_aspect_ratio;
1075 * the picture in the bitstream.
1076 * - encoding: set by lavc
1077 * - decoding: set by lavc
1079 AVFrame *coded_frame;
1083 * - encoding: set by user.
1084 * - decoding: set by user.
1087 #define FF_DEBUG_PICT_INFO 1
1088 #define FF_DEBUG_RC 2
1089 #define FF_DEBUG_BITSTREAM 4
1090 #define FF_DEBUG_MB_TYPE 8
1091 #define FF_DEBUG_QP 16
1092 #define FF_DEBUG_MV 32
1093 #define FF_DEBUG_VIS_MV 0x00000040
1094 #define FF_DEBUG_SKIP 0x00000080
1095 #define FF_DEBUG_STARTCODE 0x00000100
1096 #define FF_DEBUG_PTS 0x00000200
1097 #define FF_DEBUG_ER 0x00000400
1098 #define FF_DEBUG_MMCO 0x00000800
1099 #define FF_DEBUG_BUGS 0x00001000
1103 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1104 * - decoding: unused
1109 * minimum MB quantizer.
1110 * - encoding: set by user.
1111 * - decoding: unused
1116 * maximum MB quantizer.
1117 * - encoding: set by user.
1118 * - decoding: unused
1123 * motion estimation compare function.
1124 * - encoding: set by user.
1125 * - decoding: unused
1129 * subpixel motion estimation compare function.
1130 * - encoding: set by user.
1131 * - decoding: unused
1135 * macroblock compare function (not supported yet).
1136 * - encoding: set by user.
1137 * - decoding: unused
1140 #define FF_CMP_SAD 0
1141 #define FF_CMP_SSE 1
1142 #define FF_CMP_SATD 2
1143 #define FF_CMP_DCT 3
1144 #define FF_CMP_PSNR 4
1145 #define FF_CMP_BIT 5
1147 #define FF_CMP_ZERO 7
1148 #define FF_CMP_CHROMA 256
1151 * ME diamond size & shape.
1152 * - encoding: set by user.
1153 * - decoding: unused
1158 * amount of previous MV predictors (2a+1 x 2a+1 square).
1159 * - encoding: set by user.
1160 * - decoding: unused
1162 int last_predictor_count;
1165 * pre pass for motion estimation.
1166 * - encoding: set by user.
1167 * - decoding: unused
1172 * motion estimation pre pass compare function.
1173 * - encoding: set by user.
1174 * - decoding: unused
1179 * ME pre pass diamond size & shape.
1180 * - encoding: set by user.
1181 * - decoding: unused
1186 * subpel ME quality.
1187 * - encoding: set by user.
1188 * - decoding: unused
1190 int me_subpel_quality;
1193 * callback to negotiate the pixelFormat.
1194 * @param fmt is the list of formats which are supported by the codec,
1195 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1196 * the first is allways the native one
1197 * @return the choosen format
1198 * - encoding: unused
1199 * - decoding: set by user, if not set then the native format will always be choosen
1201 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1204 * DTG active format information (additionnal aspect ratio
1205 * information only used in DVB MPEG2 transport streams). 0 if
1208 * - encoding: unused.
1209 * - decoding: set by decoder
1211 int dtg_active_format;
1212 #define FF_DTG_AFD_SAME 8
1213 #define FF_DTG_AFD_4_3 9
1214 #define FF_DTG_AFD_16_9 10
1215 #define FF_DTG_AFD_14_9 11
1216 #define FF_DTG_AFD_4_3_SP_14_9 13
1217 #define FF_DTG_AFD_16_9_SP_14_9 14
1218 #define FF_DTG_AFD_SP_4_3 15
1221 * Maximum motion estimation search range in subpel units.
1222 * if 0 then no limit
1224 * - encoding: set by user.
1225 * - decoding: unused.
1231 * for variable fps this is 1
1232 * - encoding: set by user.
1233 * - decoding: set by lavc.
1234 * @todo move this after frame_rate
1237 int frame_rate_base;
1239 * intra quantizer bias.
1240 * - encoding: set by user.
1241 * - decoding: unused
1243 int intra_quant_bias;
1244 #define FF_DEFAULT_QUANT_BIAS 999999
1247 * inter quantizer bias.
1248 * - encoding: set by user.
1249 * - decoding: unused
1251 int inter_quant_bias;
1255 * - encoding: unused.
1256 * - decoding: which clrtable should be used for 8bit RGB images
1257 * table have to be stored somewhere FIXME
1262 * internal_buffer count.
1263 * Dont touch, used by lavc default_get_buffer()
1265 int internal_buffer_count;
1269 * Dont touch, used by lavc default_get_buffer()
1271 void *internal_buffer;
1273 #define FF_LAMBDA_SHIFT 7
1274 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1275 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1276 #define FF_LAMBDA_MAX (256*128-1)
1278 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1280 * global quality for codecs which cannot change it per frame.
1281 * this should be proportional to MPEG1/2/4 qscale.
1282 * - encoding: set by user.
1283 * - decoding: unused
1287 #define FF_CODER_TYPE_VLC 0
1288 #define FF_CODER_TYPE_AC 1
1291 * - encoding: set by user.
1292 * - decoding: unused
1298 * - encoding: set by user.
1299 * - decoding: unused
1305 * - encoding: unused
1306 * - decoding: set by user.
1309 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1310 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1311 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1314 * XVideo Motion Acceleration
1315 * - encoding: forbidden
1316 * - decoding: set by decoder
1318 int xvmc_acceleration;
1321 * macroblock decision mode
1322 * - encoding: set by user.
1323 * - decoding: unused
1326 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1327 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1328 #define FF_MB_DECISION_RD 2 ///< rate distoration
1331 * custom intra quantization matrix
1332 * - encoding: set by user, can be NULL
1333 * - decoding: set by lavc
1335 uint16_t *intra_matrix;
1338 * custom inter quantization matrix
1339 * - encoding: set by user, can be NULL
1340 * - decoding: set by lavc
1342 uint16_t *inter_matrix;
1345 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1346 * this is used to workaround some encoder bugs
1347 * - encoding: unused
1348 * - decoding: set by user, will be converted to upper case by lavc during init
1350 unsigned int stream_codec_tag;
1353 * scene change detection threshold.
1354 * 0 is default, larger means fewer detected scene changes
1355 * - encoding: set by user.
1356 * - decoding: unused
1358 int scenechange_threshold;
1361 * minimum lagrange multipler
1362 * - encoding: set by user.
1363 * - decoding: unused
1368 * maximum lagrange multipler
1369 * - encoding: set by user.
1370 * - decoding: unused
1375 * Palette control structure
1376 * - encoding: ??? (no palette-enabled encoder yet)
1377 * - decoding: set by user.
1379 struct AVPaletteControl *palctrl;
1382 * noise reduction strength
1383 * - encoding: set by user.
1384 * - decoding: unused
1386 int noise_reduction;
1389 * called at the beginning of a frame to get cr buffer for it.
1390 * buffer type (size, hints) must be the same. lavc won't check it.
1391 * lavc will pass previous buffer in pic, function should return
1392 * same buffer or new buffer with old frame "painted" into it.
1393 * if pic.data[0] == NULL must behave like get_buffer().
1394 * - encoding: unused
1395 * - decoding: set by lavc, user can override
1397 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1405 typedef struct AVOption {
1406 /** options' name */
1407 const char *name; /* if name is NULL, it indicates a link to next */
1408 /** short English text help or const struct AVOption* subpointer */
1409 const char *help; // const struct AVOption* sub;
1410 /** offset to context structure where the parsed value should be stored */
1412 /** options' type */
1414 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1415 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1416 #define FF_OPT_TYPE_INT 3 ///< integer
1417 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1418 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1419 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1420 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1421 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1422 /** min value (min == max -> no limits) */
1424 /** maximum value for double/int */
1426 /** default boo [0,1]l/double/int value */
1429 * default string value (with optional semicolon delimited extra option-list
1430 * i.e. option1;option2;option3
1431 * defval might select other then first argument as default
1434 #define FF_OPT_MAX_DEPTH 10
1438 * Parse option(s) and sets fields in passed structure
1439 * @param strct structure where the parsed results will be written
1440 * @param list list with AVOptions
1441 * @param opts string with options for parsing
1443 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1449 typedef struct AVCodec {
1451 enum CodecType type;
1454 int (*init)(AVCodecContext *);
1455 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1456 int (*close)(AVCodecContext *);
1457 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1458 uint8_t *buf, int buf_size);
1460 const AVOption *options;
1461 struct AVCodec *next;
1462 void (*flush)(AVCodecContext *);
1466 * four components are given, that's all.
1467 * the last component is alpha
1469 typedef struct AVPicture {
1471 int linesize[4]; ///< number of bytes per line
1476 * This structure defines a method for communicating palette changes
1477 * between and demuxer and a decoder.
1479 #define AVPALETTE_SIZE 1024
1480 #define AVPALETTE_COUNT 256
1481 typedef struct AVPaletteControl {
1483 /* demuxer sets this to 1 to indicate the palette has changed;
1484 * decoder resets to 0 */
1485 int palette_changed;
1487 /* 4-byte ARGB palette entries, stored in native byte order; note that
1488 * the individual palette components should be on a 8-bit scale; if
1489 * the palette data comes from a IBM VGA native format, the component
1490 * data is probably 6 bits in size and needs to be scaled */
1491 unsigned int palette[AVPALETTE_COUNT];
1495 extern AVCodec ac3_encoder;
1496 extern AVCodec mp2_encoder;
1497 extern AVCodec mp3lame_encoder;
1498 extern AVCodec oggvorbis_encoder;
1499 extern AVCodec faac_encoder;
1500 extern AVCodec mpeg1video_encoder;
1501 extern AVCodec mpeg2video_encoder;
1502 extern AVCodec h263_encoder;
1503 extern AVCodec h263p_encoder;
1504 extern AVCodec flv_encoder;
1505 extern AVCodec rv10_encoder;
1506 extern AVCodec rv20_encoder;
1507 extern AVCodec mjpeg_encoder;
1508 extern AVCodec ljpeg_encoder;
1509 extern AVCodec mpeg4_encoder;
1510 extern AVCodec msmpeg4v1_encoder;
1511 extern AVCodec msmpeg4v2_encoder;
1512 extern AVCodec msmpeg4v3_encoder;
1513 extern AVCodec wmv1_encoder;
1514 extern AVCodec wmv2_encoder;
1515 extern AVCodec huffyuv_encoder;
1516 extern AVCodec h264_encoder;
1517 extern AVCodec asv1_encoder;
1518 extern AVCodec asv2_encoder;
1519 extern AVCodec vcr1_encoder;
1520 extern AVCodec ffv1_encoder;
1521 extern AVCodec mdec_encoder;
1523 extern AVCodec h263_decoder;
1524 extern AVCodec mpeg4_decoder;
1525 extern AVCodec msmpeg4v1_decoder;
1526 extern AVCodec msmpeg4v2_decoder;
1527 extern AVCodec msmpeg4v3_decoder;
1528 extern AVCodec wmv1_decoder;
1529 extern AVCodec wmv2_decoder;
1530 extern AVCodec mpeg1video_decoder;
1531 extern AVCodec mpeg2video_decoder;
1532 extern AVCodec mpegvideo_decoder;
1533 extern AVCodec mpeg_xvmc_decoder;
1534 extern AVCodec h263i_decoder;
1535 extern AVCodec flv_decoder;
1536 extern AVCodec rv10_decoder;
1537 extern AVCodec rv20_decoder;
1538 extern AVCodec svq1_decoder;
1539 extern AVCodec svq3_decoder;
1540 extern AVCodec dvvideo_decoder;
1541 extern AVCodec wmav1_decoder;
1542 extern AVCodec wmav2_decoder;
1543 extern AVCodec mjpeg_decoder;
1544 extern AVCodec mjpegb_decoder;
1545 extern AVCodec sp5x_decoder;
1546 extern AVCodec mp2_decoder;
1547 extern AVCodec mp3_decoder;
1548 extern AVCodec mace3_decoder;
1549 extern AVCodec mace6_decoder;
1550 extern AVCodec huffyuv_decoder;
1551 extern AVCodec oggvorbis_decoder;
1552 extern AVCodec cyuv_decoder;
1553 extern AVCodec h264_decoder;
1554 extern AVCodec indeo3_decoder;
1555 extern AVCodec vp3_decoder;
1556 extern AVCodec theora_decoder;
1557 extern AVCodec amr_nb_decoder;
1558 extern AVCodec amr_nb_encoder;
1559 extern AVCodec amr_wb_encoder;
1560 extern AVCodec amr_wb_decoder;
1561 extern AVCodec aac_decoder;
1562 extern AVCodec mpeg4aac_decoder;
1563 extern AVCodec asv1_decoder;
1564 extern AVCodec asv2_decoder;
1565 extern AVCodec vcr1_decoder;
1566 extern AVCodec cljr_decoder;
1567 extern AVCodec ffv1_decoder;
1568 extern AVCodec fourxm_decoder;
1569 extern AVCodec mdec_decoder;
1570 extern AVCodec roq_decoder;
1571 extern AVCodec interplay_video_decoder;
1572 extern AVCodec xan_wc3_decoder;
1573 extern AVCodec rpza_decoder;
1574 extern AVCodec cinepak_decoder;
1575 extern AVCodec msrle_decoder;
1576 extern AVCodec msvideo1_decoder;
1577 extern AVCodec vqa_decoder;
1578 extern AVCodec idcin_decoder;
1579 extern AVCodec eightbps_decoder;
1580 extern AVCodec smc_decoder;
1581 extern AVCodec flic_decoder;
1582 extern AVCodec ra_144_decoder;
1583 extern AVCodec ra_288_decoder;
1584 extern AVCodec roq_dpcm_decoder;
1585 extern AVCodec interplay_dpcm_decoder;
1586 extern AVCodec xan_dpcm_decoder;
1589 #define PCM_CODEC(id, name) \
1590 extern AVCodec name ## _decoder; \
1591 extern AVCodec name ## _encoder
1593 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1594 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1595 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1596 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1597 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1598 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1599 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1600 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1604 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1605 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1606 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1607 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1608 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1609 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1610 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1611 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1612 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1616 /* dummy raw video codec */
1617 extern AVCodec rawvideo_encoder;
1618 extern AVCodec rawvideo_decoder;
1620 /* the following codecs use external GPL libs */
1621 extern AVCodec ac3_decoder;
1625 struct ReSampleContext;
1627 typedef struct ReSampleContext ReSampleContext;
1629 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1630 int output_rate, int input_rate);
1631 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1632 void audio_resample_close(ReSampleContext *s);
1634 /* YUV420 format is assumed ! */
1636 struct ImgReSampleContext;
1638 typedef struct ImgReSampleContext ImgReSampleContext;
1640 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1641 int input_width, int input_height);
1643 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1644 int iwidth, int iheight,
1645 int topBand, int bottomBand,
1646 int leftBand, int rightBand);
1648 void img_resample(ImgReSampleContext *s,
1649 AVPicture *output, const AVPicture *input);
1651 void img_resample_close(ImgReSampleContext *s);
1654 * Allocate memory for a picture. Call avpicture_free to free it.
1656 * @param picture the picture to be filled in.
1657 * @param pix_fmt the format of the picture.
1658 * @param width the width of the picture.
1659 * @param height the height of the picture.
1660 * @return 0 if successful, -1 if not.
1662 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1664 /* Free a picture previously allocated by avpicture_alloc. */
1665 void avpicture_free(AVPicture *picture);
1667 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1668 int pix_fmt, int width, int height);
1669 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1670 unsigned char *dest, int dest_size);
1671 int avpicture_get_size(int pix_fmt, int width, int height);
1672 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1673 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1674 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1676 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1677 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1678 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1679 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1680 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1681 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1683 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1685 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1686 int has_alpha, int *loss_ptr);
1688 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1689 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1690 int img_get_alpha_info(const AVPicture *src,
1691 int pix_fmt, int width, int height);
1693 /* convert among pixel formats */
1694 int img_convert(AVPicture *dst, int dst_pix_fmt,
1695 const AVPicture *src, int pix_fmt,
1696 int width, int height);
1698 /* deinterlace a picture */
1699 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1700 int pix_fmt, int width, int height);
1702 /* external high level API */
1704 extern AVCodec *first_avcodec;
1706 /* returns LIBAVCODEC_VERSION_INT constant */
1707 unsigned avcodec_version(void);
1708 /* returns LIBAVCODEC_BUILD constant */
1709 unsigned avcodec_build(void);
1710 void avcodec_init(void);
1712 void register_avcodec(AVCodec *format);
1713 AVCodec *avcodec_find_encoder(enum CodecID id);
1714 AVCodec *avcodec_find_encoder_by_name(const char *name);
1715 AVCodec *avcodec_find_decoder(enum CodecID id);
1716 AVCodec *avcodec_find_decoder_by_name(const char *name);
1717 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1719 void avcodec_get_context_defaults(AVCodecContext *s);
1720 AVCodecContext *avcodec_alloc_context(void);
1721 AVFrame *avcodec_alloc_frame(void);
1723 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1724 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1725 void avcodec_default_free_buffers(AVCodecContext *s);
1728 * opens / inits the AVCodecContext.
1731 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1733 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1734 int *frame_size_ptr,
1735 uint8_t *buf, int buf_size);
1736 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1737 int *got_picture_ptr,
1738 uint8_t *buf, int buf_size);
1739 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1741 uint8_t *buf, int buf_size);
1742 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1743 const short *samples);
1744 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1745 const AVFrame *pict);
1747 int avcodec_close(AVCodecContext *avctx);
1749 void avcodec_register_all(void);
1751 void avcodec_flush_buffers(AVCodecContext *avctx);
1753 /* misc usefull functions */
1756 * returns a single letter to describe the picture type
1758 char av_get_pict_type_char(int pict_type);
1761 * reduce a fraction.
1762 * this is usefull for framerate calculations
1763 * @param max the maximum allowed for dst_nom & dst_den
1764 * @return 1 if exact, 0 otherwise
1766 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1769 * rescale a 64bit integer.
1770 * a simple a*b/c isnt possible as it can overflow
1772 int64_t av_rescale(int64_t a, int b, int c);
1776 * Interface for 0.5.0 version
1778 * do not even think about it's usage for this moment
1782 /// compressed size used from given memory buffer
1784 /// I/P/B frame type
1790 * order can't be changed - once it was defined
1794 AVC_OPEN_BY_NAME = 0xACA000,
1795 AVC_OPEN_BY_CODEC_ID,
1800 // pin - struct { uint8_t* src, uint_t src_size }
1801 // pout - struct { AVPicture* img, consumed_bytes,
1803 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1804 // pout - uint_t used_from_dest_size
1807 // query/get video commands
1808 AVC_GET_VERSION = 0xACB000,
1812 AVC_GET_QUANT_TABLE,
1815 // query/get audio commands
1816 AVC_GET_FRAME_SIZE = 0xABC000,
1818 // maybe define some simple structure which
1819 // might be passed to the user - but they can't
1820 // contain any codec specific parts and these
1821 // calls are usualy necessary only few times
1823 // set video commands
1824 AVC_SET_WIDTH = 0xACD000,
1827 // set video encoding commands
1828 AVC_SET_FRAME_RATE = 0xACD800,
1832 // set audio commands
1833 AVC_SET_SAMPLE_RATE = 0xACE000,
1839 * \param handle allocated private structure by libavcodec
1840 * for initialization pass NULL - will be returned pout
1841 * user is supposed to know nothing about its structure
1842 * \param cmd type of operation to be performed
1843 * \param pint input parameter
1844 * \param pout output parameter
1846 * \returns command status - eventually for query command it might return
1847 * integer resulting value
1849 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1852 typedef struct AVCodecParserContext {
1854 struct AVCodecParser *parser;
1855 int64_t frame_offset; /* offset of the current frame */
1856 int64_t cur_offset; /* current offset
1857 (incremented by each av_parser_parse()) */
1858 int64_t last_frame_offset; /* offset of the last frame */
1860 int pict_type; /* XXX: put it back in AVCodecContext */
1861 int repeat_pict; /* XXX: put it back in AVCodecContext */
1862 int64_t pts; /* in us, if given by the codec (used by raw mpeg4) */
1863 int64_t dts; /* in us, if given by the codec (used by raw mpeg4) */
1864 } AVCodecParserContext;
1866 typedef struct AVCodecParser {
1867 int codec_ids[3]; /* several codec IDs are permitted */
1869 int (*parser_init)(AVCodecParserContext *s);
1870 int (*parser_parse)(AVCodecParserContext *s,
1871 AVCodecContext *avctx,
1872 uint8_t **poutbuf, int *poutbuf_size,
1873 const uint8_t *buf, int buf_size);
1874 void (*parser_close)(AVCodecParserContext *s);
1875 struct AVCodecParser *next;
1878 extern AVCodecParser *av_first_parser;
1880 void av_register_codec_parser(AVCodecParser *parser);
1881 AVCodecParserContext *av_parser_init(int codec_id);
1882 int av_parser_parse(AVCodecParserContext *s,
1883 AVCodecContext *avctx,
1884 uint8_t **poutbuf, int *poutbuf_size,
1885 const uint8_t *buf, int buf_size);
1886 void av_parser_close(AVCodecParserContext *s);
1888 extern AVCodecParser mpegvideo_parser;
1889 extern AVCodecParser mpeg4video_parser;
1890 extern AVCodecParser h263_parser;
1891 extern AVCodecParser h264_parser;
1892 extern AVCodecParser mpegaudio_parser;
1893 extern AVCodecParser ac3_parser;
1896 void *av_malloc(unsigned int size);
1897 void *av_mallocz(unsigned int size);
1898 void *av_realloc(void *ptr, unsigned int size);
1899 void av_free(void *ptr);
1900 char *av_strdup(const char *s);
1901 void __av_freep(void **ptr);
1902 #define av_freep(p) __av_freep((void **)(p))
1903 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1904 /* for static data only */
1905 /* call av_free_static to release all staticaly allocated tables */
1906 void av_free_static(void);
1907 void *__av_mallocz_static(void** location, unsigned int size);
1908 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1910 /* add by bero : in adx.c */
1911 int is_adx(const unsigned char *buf,size_t bufsize);
1913 void img_copy(AVPicture *dst, const AVPicture *src,
1914 int pix_fmt, int width, int height);
1920 #define AV_LOG_ERROR 0
1921 #define AV_LOG_INFO 1
1922 #define AV_LOG_DEBUG 2
1924 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
1925 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
1926 extern int av_log_get_level(void);
1927 extern void av_log_set_level(int);
1928 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
1930 #undef AV_LOG_TRAP_PRINTF
1931 #ifdef AV_LOG_TRAP_PRINTF
1932 #define printf DO NOT USE
1933 #define fprintf DO NOT USE
1935 #define stderr DO NOT USE
1942 #endif /* AVCODEC_H */