17 #define FFMPEG_VERSION_INT 0x000408
18 #define FFMPEG_VERSION "0.4.8"
19 #define LIBAVCODEC_BUILD 4689
21 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
22 #define LIBAVCODEC_VERSION FFMPEG_VERSION
24 #define AV_STRINGIFY(s) AV_TOSTRING(s)
25 #define AV_TOSTRING(s) #s
26 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
31 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
32 CODEC_ID_MPEG2VIDEO_XVMC,
36 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
77 CODEC_ID_INTERPLAY_VIDEO,
87 /* various pcm "codecs" */
97 /* various adpcm codecs */
98 CODEC_ID_ADPCM_IMA_QT,
99 CODEC_ID_ADPCM_IMA_WAV,
100 CODEC_ID_ADPCM_IMA_DK3,
101 CODEC_ID_ADPCM_IMA_DK4,
102 CODEC_ID_ADPCM_IMA_WS,
112 /* RealAudio codecs*/
116 /* various DPCM codecs */
118 CODEC_ID_INTERPLAY_DPCM,
121 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
122 stream (only used by libavformat) */
125 /* CODEC_ID_MP3LAME is absolete */
126 #define CODEC_ID_MP3LAME CODEC_ID_MP3
129 CODEC_TYPE_UNKNOWN = -1,
136 * Pixel format. Notes:
138 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
139 * color is put together as:
140 * (A << 24) | (R << 16) | (G << 8) | B
141 * This is stored as BGRA on little endian CPU architectures and ARGB on
144 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
145 * image data is stored in AVFrame.data[0]. The palette is transported in
146 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
147 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
148 * also endian-specific). Note also that the individual RGB palette
149 * components stored in AVFrame.data[1] should be in the range 0..255.
150 * This is important as many custom PAL8 video codecs that were designed
151 * to run on the IBM VGA graphics adapter use 6-bit palette components.
154 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
156 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
157 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
158 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
159 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
160 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
161 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
162 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
163 PIX_FMT_RGB565, ///< always stored in cpu endianness
164 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
166 PIX_FMT_MONOWHITE, ///< 0 is white
167 PIX_FMT_MONOBLACK, ///< 0 is black
168 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
169 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
170 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
171 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
172 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
173 PIX_FMT_XVMC_MPEG2_IDCT,
177 /* currently unused, may be used if 24/32 bits samples ever supported */
179 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
183 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
186 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
187 * this is mainly needed because some optimized bitstream readers read
188 * 32 or 64 bit at once and could read over the end<br>
189 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
190 * MPEG bitstreams could cause overread and segfault
192 #define FF_INPUT_BUFFER_PADDING_SIZE 8
194 /* motion estimation type, EPZS by default */
204 typedef struct RcOverride{
207 int qscale; // if this is 0 then quality_factor will be used instead
208 float quality_factor;
211 /* only for ME compatiblity with old apps */
212 extern int motion_estimation_method;
214 /* ME algos sorted by quality */
216 static const __attribute__((unused)) int Motion_Est_QTab[] =
217 { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL };
220 #define FF_MAX_B_FRAMES 8
223 these flags can be passed in AVCodecContext.flags before initing
224 Note: note not everything is supported yet
227 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
228 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
229 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
230 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
231 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
232 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
233 /* parent program gurantees that the input for b-frame containing streams is not written to
234 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
235 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
236 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
237 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
238 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
239 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
240 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
241 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
242 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
243 of only at frame boundaries */
244 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
245 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
246 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
247 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
248 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
249 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
250 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
251 /* Fx : Flag for h263+ extra options */
252 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
253 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
254 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
255 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
256 /* For advanced prediction mode, we reuse the 4MV flag */
257 /* Unsupported options :
258 * Syntax Arithmetic coding (SAC)
259 * Deblocking filter internal loop
261 * Reference Picture Selection
262 * Independant Segment Decoding
263 * Alternative Inter * VLC
264 * Modified Quantization */
266 /* codec capabilities */
268 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
270 * Codec uses get_buffer() for allocating buffers.
271 * direct rendering method 1
273 #define CODEC_CAP_DR1 0x0002
274 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
276 #define CODEC_CAP_PARSE_ONLY 0x0004
277 #define CODEC_CAP_TRUNCATED 0x0008
281 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
283 typedef struct AVPanScan{
286 * - encoding: set by user.
287 * - decoding: set by lavc
292 * width and height in 1/16 pel
293 * - encoding: set by user.
294 * - decoding: set by lavc
300 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
301 * - encoding: set by user.
302 * - decoding: set by lavc
304 int16_t position[3][2];
307 #define FF_COMMON_FRAME \
309 * pointer to the picture planes.\
310 * this might be different from the first allocated byte\
317 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
318 * this isnt used by lavc unless the default get/release_buffer() is used\
324 * 1 -> keyframe, 0-> not\
325 * - encoding: set by lavc\
326 * - decoding: set by lavc\
331 * picture type of the frame, see ?_TYPE below.\
332 * - encoding: set by lavc for coded_picture (and set by user for input)\
333 * - decoding: set by lavc\
338 * presentation timestamp in micro seconds (time when frame should be shown to user)\
339 * if 0 then the frame_rate will be used as reference\
340 * - encoding: MUST be set by user\
341 * - decoding: set by lavc\
346 * picture number in bitstream order.\
347 * - encoding: set by\
348 * - decoding: set by lavc\
350 int coded_picture_number;\
352 * picture number in display order.\
353 * - encoding: set by\
354 * - decoding: set by lavc\
356 int display_picture_number;\
359 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
360 * - encoding: set by lavc for coded_picture (and set by user for input)\
361 * - decoding: set by lavc\
366 * buffer age (1->was last buffer and dint change, 2->..., ...).\
367 * set to INT_MAX if the buffer has not been used yet \
368 * - encoding: unused\
369 * - decoding: MUST be set by get_buffer()\
374 * is this picture used as reference\
375 * - encoding: unused\
376 * - decoding: set by lavc (before get_buffer() call))\
382 * - encoding: unused\
383 * - decoding: set by lavc\
385 int8_t *qscale_table;\
388 * - encoding: unused\
389 * - decoding: set by lavc\
394 * mbskip_table[mb]>=1 if MB didnt change\
395 * stride= mb_width = (width+15)>>4\
396 * - encoding: unused\
397 * - decoding: set by lavc\
399 uint8_t *mbskip_table;\
402 * for some private data of the user\
403 * - encoding: unused\
404 * - decoding: set by user\
410 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
411 * - decoding: unused\
416 * type of the buffer (to keep track of who has to dealloc data[*])\
417 * - encoding: set by the one who allocs it\
418 * - decoding: set by the one who allocs it\
419 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
424 * when decoding, this signal how much the picture must be delayed.\
425 * extra_delay = repeat_pict / (2*fps)\
426 * - encoding: unused\
427 * - decoding: set by lavc\
437 * The content of the picture is interlaced.\
438 * - encoding: set by user\
439 * - decoding: set by lavc (default 0)\
441 int interlaced_frame;\
444 * if the content is interlaced, is top field displayed first.\
445 * - encoding: set by user\
446 * - decoding: set by lavc\
448 int top_field_first;\
452 * - encoding: set by user\
453 * - decoding: set by lavc\
455 AVPanScan *pan_scan;\
458 * tell user application that palette has changed from previous frame.\
459 * - encoding: ??? (no palette-enabled encoder yet)\
460 * - decoding: set by lavc (default 0)\
462 int palette_has_changed;\
464 #define FF_QSCALE_TYPE_MPEG1 0
465 #define FF_QSCALE_TYPE_MPEG2 1
467 #define FF_BUFFER_TYPE_INTERNAL 1
468 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
469 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
470 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
473 #define FF_I_TYPE 1 // Intra
474 #define FF_P_TYPE 2 // Predicted
475 #define FF_B_TYPE 3 // Bi-dir predicted
476 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
483 typedef struct AVFrame {
487 #define DEFAULT_FRAME_RATE_BASE 1001000
490 * main external api structure.
492 typedef struct AVCodecContext {
494 * the average bitrate.
495 * - encoding: set by user. unused for constant quantizer encoding
496 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
501 * number of bits the bitstream is allowed to diverge from the reference.
502 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
503 * - encoding: set by user. unused for constant quantizer encoding
506 int bit_rate_tolerance;
510 * - encoding: set by user.
511 * - decoding: set by user.
516 * some codecs needs additionnal format info. It is stored here
517 * - encoding: set by user.
518 * - decoding: set by lavc. (FIXME is this ok?)
523 * motion estimation algorithm used for video coding.
524 * - encoding: MUST be set by user.
530 * some codecs need / can use extra-data like huffman tables.
531 * mjpeg: huffman tables
532 * rv10: additional flags
533 * mpeg4: global headers (they can be in the bitstream or here)
534 * - encoding: set/allocated/freed by lavc.
535 * - decoding: set/allocated/freed by user.
542 * frames per sec multiplied by frame_rate_base.
543 * for variable fps this is the precission, so if the timestamps
544 * can be specified in msec precssion then this is 1000*frame_rate_base
545 * - encoding: MUST be set by user
546 * - decoding: set by lavc. 0 or the frame_rate if available
552 * - encoding: MUST be set by user.
553 * - decoding: set by user if known, codec should override / dynamically change if needed
557 #define FF_ASPECT_SQUARE 1
558 #define FF_ASPECT_4_3_625 2
559 #define FF_ASPECT_4_3_525 3
560 #define FF_ASPECT_16_9_625 4
561 #define FF_ASPECT_16_9_525 5
562 #define FF_ASPECT_EXTENDED 15
565 * the number of pictures in a group of pitures, or 0 for intra_only.
566 * - encoding: set by user.
572 * pixel format, see PIX_FMT_xxx.
573 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
574 * conversion is in order. This only works for
575 * codecs with one supported pix_fmt, we should
576 * do something for a generic case as well.
577 * - decoding: set by lavc.
579 enum PixelFormat pix_fmt;
582 * Frame rate emulation. If not zero lower layer (i.e. format handler)
583 * has to read frames at native frame rate.
584 * - encoding: set by user.
585 * - decoding: unused.
590 * if non NULL, 'draw_horiz_band' is called by the libavcodec
591 * decoder to draw an horizontal band. It improve cache usage. Not
592 * all codecs can do that. You must check the codec capabilities
595 * - decoding: set by user.
596 * @param height the height of the slice
597 * @param y the y position of the slice
598 * @param type 1->top field, 2->bottom field, 3->frame
599 * @param offset offset into the AVFrame.data from which the slice should be read
601 void (*draw_horiz_band)(struct AVCodecContext *s,
602 const AVFrame *src, int offset[4],
603 int y, int type, int height);
606 int sample_rate; ///< samples per sec
608 int sample_fmt; ///< sample format, currenly unused
610 /* the following data should not be initialized */
611 int frame_size; ///< in samples, initialized when calling 'init'
612 int frame_number; ///< audio or video frame number
613 int real_pict_num; ///< returns the real picture number of previous encoded frame
616 * number of frames the decoded output will be delayed relative to
618 * - encoding: set by lavc.
623 /* - encoding parameters */
624 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
625 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
629 * - encoding: set by user.
636 * - encoding: set by user.
642 * maximum quantizer difference etween frames.
643 * - encoding: set by user.
649 * maximum number of b frames between non b frames.
650 * note: the output will be delayed by max_b_frames+1 relative to the input
651 * - encoding: set by user.
657 * qscale factor between ip and b frames.
658 * - encoding: set by user.
661 float b_quant_factor;
663 /** obsolete FIXME remove */
665 int b_frame_strategy;
670 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
674 struct AVCodec *codec;
678 /* The following data is for RTP friendly coding */
679 /* By now only H.263/H.263+/MPEG4 coder honours this */
680 int rtp_mode; /* 1 for activate RTP friendly-mode */
681 /* highers numbers represent more error-prone */
682 /* enviroments, by now just "1" exist */
684 int rtp_payload_size; /* The size of the RTP payload, the coder will */
685 /* do it's best to deliver a chunk with size */
686 /* below rtp_payload_size, the chunk will start */
687 /* with a start code on some codecs like H.263 */
688 /* This doesn't take account of any particular */
689 /* headers inside the transmited RTP payload */
692 /* The RTP callcack: This function is called */
693 /* every time the encoder as a packet to send */
694 /* Depends on the encoder if the data starts */
695 /* with a Start Code (it should) H.263 does */
696 void (*rtp_callback)(void *data, int size, int packet_number);
698 /* statistics, used for 2-pass encoding */
709 * number of bits used for the previously encoded frame.
710 * - encoding: set by lavc
716 * private data of the user, can be used to carry app specific stuff.
717 * - encoding: set by user
718 * - decoding: set by user
723 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
724 enum CodecID codec_id; /* see CODEC_ID_xxx */
727 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
728 * this is used to workaround some encoder bugs
729 * - encoding: set by user, if not then the default based on codec_id will be used
730 * - decoding: set by user, will be converted to upper case by lavc during init
732 unsigned int codec_tag;
735 * workaround bugs in encoders which sometimes cannot be detected automatically.
737 * - decoding: set by user
740 #define FF_BUG_AUTODETECT 1 ///< autodetection
741 #define FF_BUG_OLD_MSMPEG4 2
742 #define FF_BUG_XVID_ILACE 4
743 #define FF_BUG_UMP4 8
744 #define FF_BUG_NO_PADDING 16
745 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
746 #define FF_BUG_QPEL_CHROMA 64
747 #define FF_BUG_STD_QPEL 128
748 #define FF_BUG_QPEL_CHROMA2 256
749 #define FF_BUG_DIRECT_BLOCKSIZE 512
750 #define FF_BUG_EDGE 1024
751 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
754 * luma single coeff elimination threshold.
755 * - encoding: set by user
758 int luma_elim_threshold;
761 * chroma single coeff elimination threshold.
762 * - encoding: set by user
765 int chroma_elim_threshold;
768 * strictly follow the std (MPEG4, ...).
769 * - encoding: set by user
772 int strict_std_compliance;
775 * qscale offset between ip and b frames.
776 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
777 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
778 * - encoding: set by user.
781 float b_quant_offset;
784 * error resilience higher values will detect more errors but may missdetect
785 * some more or less valid parts as errors.
787 * - decoding: set by user
789 int error_resilience;
790 #define FF_ER_CAREFULL 1
791 #define FF_ER_COMPLIANT 2
792 #define FF_ER_AGGRESSIVE 3
793 #define FF_ER_VERY_AGGRESSIVE 4
796 * called at the beginning of each frame to get a buffer for it.
797 * if pic.reference is set then the frame will be read later by lavc
798 * width and height should be rounded up to the next multiple of 16
800 * - decoding: set by lavc, user can override
802 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
805 * called to release buffers which where allocated with get_buffer.
806 * a released buffer can be reused in get_buffer()
807 * pic.data[*] must be set to NULL
809 * - decoding: set by lavc, user can override
811 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
814 * is 1 if the decoded stream contains b frames, 0 otherwise.
816 * - decoding: set by lavc
820 int block_align; ///< used by some WAV based audio codecs
822 int parse_only; /* - decoding only: if true, only parsing is done
823 (function avcodec_parse_frame()). The frame
824 data is returned. Only MPEG codecs support this now. */
827 * 0-> h263 quant 1-> mpeg quant.
828 * - encoding: set by user.
834 * pass1 encoding statistics output buffer.
835 * - encoding: set by lavc
841 * pass2 encoding statistics input buffer.
842 * concatenated stuff from stats_out of pass1 should be placed here
843 * - encoding: allocated/set/freed by user
849 * ratecontrol qmin qmax limiting method.
850 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
851 * - encoding: set by user.
860 * ratecontrol override, see RcOverride.
861 * - encoding: allocated/set/freed by user.
864 RcOverride *rc_override;
865 int rc_override_count;
868 * rate control equation.
869 * - encoding: set by user
876 * - encoding: set by user.
883 * - encoding: set by user.
889 * decoder bitstream buffer size.
890 * - encoding: set by user.
894 float rc_buffer_aggressivity;
897 * qscale factor between p and i frames.
898 * - encoding: set by user.
901 float i_quant_factor;
904 * qscale offset between p and i frames.
905 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
906 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
907 * - encoding: set by user.
910 float i_quant_offset;
913 * initial complexity for pass1 ratecontrol.
914 * - encoding: set by user.
917 float rc_initial_cplx;
920 * dct algorithm, see FF_DCT_* below.
921 * - encoding: set by user
925 #define FF_DCT_AUTO 0
926 #define FF_DCT_FASTINT 1
929 #define FF_DCT_MLIB 4
930 #define FF_DCT_ALTIVEC 5
931 #define FF_DCT_FAAN 6
934 * luminance masking (0-> disabled).
935 * - encoding: set by user
941 * temporary complexity masking (0-> disabled).
942 * - encoding: set by user
945 float temporal_cplx_masking;
948 * spatial complexity masking (0-> disabled).
949 * - encoding: set by user
952 float spatial_cplx_masking;
955 * p block masking (0-> disabled).
956 * - encoding: set by user
962 * darkness masking (0-> disabled).
963 * - encoding: set by user
969 /* for binary compatibility */
973 * idct algorithm, see FF_IDCT_* below.
974 * - encoding: set by user
975 * - decoding: set by user
978 #define FF_IDCT_AUTO 0
979 #define FF_IDCT_INT 1
980 #define FF_IDCT_SIMPLE 2
981 #define FF_IDCT_SIMPLEMMX 3
982 #define FF_IDCT_LIBMPEG2MMX 4
983 #define FF_IDCT_PS2 5
984 #define FF_IDCT_MLIB 6
985 #define FF_IDCT_ARM 7
986 #define FF_IDCT_ALTIVEC 8
987 #define FF_IDCT_SH4 9
988 #define FF_IDCT_SIMPLEARM 10
992 * - encoding: set by lavc
993 * - decoding: set by user (or 0)
997 * slice offsets in the frame in bytes.
998 * - encoding: set/allocated by lavc
999 * - decoding: set/allocated by user (or NULL)
1004 * error concealment flags.
1005 * - encoding: unused
1006 * - decoding: set by user
1008 int error_concealment;
1009 #define FF_EC_GUESS_MVS 1
1010 #define FF_EC_DEBLOCK 2
1013 * dsp_mask could be add used to disable unwanted CPU features
1014 * CPU features (i.e. MMX, SSE. ...)
1016 * with FORCE flag you may instead enable given CPU features
1017 * (Dangerous: usable in case of misdetection, improper usage however will
1018 * result into program crash)
1021 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1022 /* lower 16 bits - CPU features */
1024 #define FF_MM_MMX 0x0001 /* standard MMX */
1025 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1026 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1027 #define FF_MM_SSE 0x0008 /* SSE functions */
1028 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1029 #endif /* HAVE_MMX */
1032 * bits per sample/pixel from the demuxer (needed for huffyuv).
1033 * - encoding: set by lavc
1034 * - decoding: set by user
1036 int bits_per_sample;
1039 * prediction method (needed for huffyuv).
1040 * - encoding: set by user
1041 * - decoding: unused
1043 int prediction_method;
1044 #define FF_PRED_LEFT 0
1045 #define FF_PRED_PLANE 1
1046 #define FF_PRED_MEDIAN 2
1049 * sample aspect ratio (0 if unknown).
1050 * - encoding: set by user.
1051 * - decoding: set by lavc.
1053 AVRational sample_aspect_ratio;
1056 * the picture in the bitstream.
1057 * - encoding: set by lavc
1058 * - decoding: set by lavc
1060 AVFrame *coded_frame;
1064 * - encoding: set by user.
1065 * - decoding: set by user.
1068 #define FF_DEBUG_PICT_INFO 1
1069 #define FF_DEBUG_RC 2
1070 #define FF_DEBUG_BITSTREAM 4
1071 #define FF_DEBUG_MB_TYPE 8
1072 #define FF_DEBUG_QP 16
1073 #define FF_DEBUG_MV 32
1074 #define FF_DEBUG_VIS_MV 0x00000040
1075 #define FF_DEBUG_SKIP 0x00000080
1076 #define FF_DEBUG_STARTCODE 0x00000100
1077 #define FF_DEBUG_PTS 0x00000200
1078 #define FF_DEBUG_ER 0x00000400
1079 #define FF_DEBUG_MMCO 0x00000800
1080 #define FF_DEBUG_BUGS 0x00001000
1084 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1085 * - decoding: unused
1090 * minimum MB quantizer.
1091 * - encoding: set by user.
1092 * - decoding: unused
1097 * maximum MB quantizer.
1098 * - encoding: set by user.
1099 * - decoding: unused
1104 * motion estimation compare function.
1105 * - encoding: set by user.
1106 * - decoding: unused
1110 * subpixel motion estimation compare function.
1111 * - encoding: set by user.
1112 * - decoding: unused
1116 * macroblock compare function (not supported yet).
1117 * - encoding: set by user.
1118 * - decoding: unused
1121 #define FF_CMP_SAD 0
1122 #define FF_CMP_SSE 1
1123 #define FF_CMP_SATD 2
1124 #define FF_CMP_DCT 3
1125 #define FF_CMP_PSNR 4
1126 #define FF_CMP_BIT 5
1128 #define FF_CMP_ZERO 7
1129 #define FF_CMP_CHROMA 256
1132 * ME diamond size & shape.
1133 * - encoding: set by user.
1134 * - decoding: unused
1139 * amount of previous MV predictors (2a+1 x 2a+1 square).
1140 * - encoding: set by user.
1141 * - decoding: unused
1143 int last_predictor_count;
1146 * pre pass for motion estimation.
1147 * - encoding: set by user.
1148 * - decoding: unused
1153 * motion estimation pre pass compare function.
1154 * - encoding: set by user.
1155 * - decoding: unused
1160 * ME pre pass diamond size & shape.
1161 * - encoding: set by user.
1162 * - decoding: unused
1167 * subpel ME quality.
1168 * - encoding: set by user.
1169 * - decoding: unused
1171 int me_subpel_quality;
1174 * callback to negotiate the pixelFormat.
1175 * @param fmt is the list of formats which are supported by the codec,
1176 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1177 * the first is allways the native one
1178 * @return the choosen format
1179 * - encoding: unused
1180 * - decoding: set by user, if not set then the native format will always be choosen
1182 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1185 * DTG active format information (additionnal aspect ratio
1186 * information only used in DVB MPEG2 transport streams). 0 if
1189 * - encoding: unused.
1190 * - decoding: set by decoder
1192 int dtg_active_format;
1193 #define FF_DTG_AFD_SAME 8
1194 #define FF_DTG_AFD_4_3 9
1195 #define FF_DTG_AFD_16_9 10
1196 #define FF_DTG_AFD_14_9 11
1197 #define FF_DTG_AFD_4_3_SP_14_9 13
1198 #define FF_DTG_AFD_16_9_SP_14_9 14
1199 #define FF_DTG_AFD_SP_4_3 15
1202 * Maximum motion estimation search range in subpel units.
1203 * if 0 then no limit
1205 * - encoding: set by user.
1206 * - decoding: unused.
1212 * for variable fps this is 1
1213 * - encoding: set by user.
1214 * - decoding: set by lavc.
1215 * @todo move this after frame_rate
1218 int frame_rate_base;
1220 * intra quantizer bias.
1221 * - encoding: set by user.
1222 * - decoding: unused
1224 int intra_quant_bias;
1225 #define FF_DEFAULT_QUANT_BIAS 999999
1228 * inter quantizer bias.
1229 * - encoding: set by user.
1230 * - decoding: unused
1232 int inter_quant_bias;
1236 * - encoding: unused.
1237 * - decoding: which clrtable should be used for 8bit RGB images
1238 * table have to be stored somewhere FIXME
1243 * internal_buffer count.
1244 * Dont touch, used by lavc default_get_buffer()
1246 int internal_buffer_count;
1250 * Dont touch, used by lavc default_get_buffer()
1252 void *internal_buffer;
1254 #define FF_LAMBDA_SHIFT 7
1255 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1256 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1257 #define FF_LAMBDA_MAX (256*128-1)
1259 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1261 * global quality for codecs which cannot change it per frame.
1262 * this should be proportional to MPEG1/2/4 qscale.
1263 * - encoding: set by user.
1264 * - decoding: unused
1268 #define FF_CODER_TYPE_VLC 0
1269 #define FF_CODER_TYPE_AC 1
1272 * - encoding: set by user.
1273 * - decoding: unused
1279 * - encoding: set by user.
1280 * - decoding: unused
1286 * - encoding: unused
1287 * - decoding: set by user.
1290 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1291 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1292 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1295 * XVideo Motion Acceleration
1296 * - encoding: forbidden
1297 * - decoding: set by decoder
1299 int xvmc_acceleration;
1302 * macroblock decision mode
1303 * - encoding: set by user.
1304 * - decoding: unused
1307 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1308 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1309 #define FF_MB_DECISION_RD 2 ///< rate distoration
1312 * custom intra quantization matrix
1313 * - encoding: set by user, can be NULL
1314 * - decoding: set by lavc
1316 uint16_t *intra_matrix;
1319 * custom inter quantization matrix
1320 * - encoding: set by user, can be NULL
1321 * - decoding: set by lavc
1323 uint16_t *inter_matrix;
1326 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1327 * this is used to workaround some encoder bugs
1328 * - encoding: unused
1329 * - decoding: set by user, will be converted to upper case by lavc during init
1331 unsigned int stream_codec_tag;
1334 * scene change detection threshold.
1335 * 0 is default, larger means fewer detected scene changes
1336 * - encoding: set by user.
1337 * - decoding: unused
1339 int scenechange_threshold;
1342 * minimum lagrange multipler
1343 * - encoding: set by user.
1344 * - decoding: unused
1349 * maximum lagrange multipler
1350 * - encoding: set by user.
1351 * - decoding: unused
1356 * Palette control structure
1357 * - encoding: ??? (no palette-enabled encoder yet)
1358 * - decoding: set by user.
1360 struct AVPaletteControl *palctrl;
1368 typedef struct AVOption {
1369 /** options' name */
1370 const char *name; /* if name is NULL, it indicates a link to next */
1371 /** short English text help or const struct AVOption* subpointer */
1372 const char *help; // const struct AVOption* sub;
1373 /** offset to context structure where the parsed value should be stored */
1375 /** options' type */
1377 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1378 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1379 #define FF_OPT_TYPE_INT 3 ///< integer
1380 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1381 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1382 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1383 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1384 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1385 /** min value (min == max -> no limits) */
1387 /** maximum value for double/int */
1389 /** default boo [0,1]l/double/int value */
1392 * default string value (with optional semicolon delimited extra option-list
1393 * i.e. option1;option2;option3
1394 * defval might select other then first argument as default
1397 #define FF_OPT_MAX_DEPTH 10
1401 * Parse option(s) and sets fields in passed structure
1402 * @param strct structure where the parsed results will be written
1403 * @param list list with AVOptions
1404 * @param opts string with options for parsing
1406 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1412 typedef struct AVCodec {
1414 enum CodecType type;
1417 int (*init)(AVCodecContext *);
1418 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1419 int (*close)(AVCodecContext *);
1420 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1421 uint8_t *buf, int buf_size);
1423 const AVOption *options;
1424 struct AVCodec *next;
1425 void (*flush)(AVCodecContext *);
1429 * four components are given, that's all.
1430 * the last component is alpha
1432 typedef struct AVPicture {
1434 int linesize[4]; ///< number of bytes per line
1439 * This structure defines a method for communicating palette changes
1440 * between and demuxer and a decoder.
1442 #define AVPALETTE_SIZE 1024
1443 #define AVPALETT_COUNT 256
1444 typedef struct AVPaletteControl {
1446 /* demuxer sets this to 1 to indicate the palette has changed;
1447 * decoder resets to 0 */
1448 int palette_changed;
1450 /* 4-byte ARGB palette entries, stored in native byte order; note that
1451 * the individual palette components should be on a 8-bit scale; if
1452 * the palette data comes from a IBM VGA native format, the component
1453 * data is probably 6 bits in size and needs to be scaled */
1454 unsigned int palette[AVPALETTE_COUNT];
1458 extern AVCodec ac3_encoder;
1459 extern AVCodec mp2_encoder;
1460 extern AVCodec mp3lame_encoder;
1461 extern AVCodec oggvorbis_encoder;
1462 extern AVCodec faac_encoder;
1463 extern AVCodec mpeg1video_encoder;
1464 extern AVCodec mpeg2video_encoder;
1465 extern AVCodec h263_encoder;
1466 extern AVCodec h263p_encoder;
1467 extern AVCodec flv_encoder;
1468 extern AVCodec rv10_encoder;
1469 extern AVCodec mjpeg_encoder;
1470 extern AVCodec ljpeg_encoder;
1471 extern AVCodec mpeg4_encoder;
1472 extern AVCodec msmpeg4v1_encoder;
1473 extern AVCodec msmpeg4v2_encoder;
1474 extern AVCodec msmpeg4v3_encoder;
1475 extern AVCodec wmv1_encoder;
1476 extern AVCodec wmv2_encoder;
1477 extern AVCodec huffyuv_encoder;
1478 extern AVCodec h264_encoder;
1479 extern AVCodec asv1_encoder;
1480 extern AVCodec asv2_encoder;
1481 extern AVCodec vcr1_encoder;
1482 extern AVCodec ffv1_encoder;
1483 extern AVCodec mdec_encoder;
1485 extern AVCodec h263_decoder;
1486 extern AVCodec mpeg4_decoder;
1487 extern AVCodec msmpeg4v1_decoder;
1488 extern AVCodec msmpeg4v2_decoder;
1489 extern AVCodec msmpeg4v3_decoder;
1490 extern AVCodec wmv1_decoder;
1491 extern AVCodec wmv2_decoder;
1492 extern AVCodec mpeg1video_decoder;
1493 extern AVCodec mpeg2video_decoder;
1494 extern AVCodec mpeg_xvmc_decoder;
1495 extern AVCodec h263i_decoder;
1496 extern AVCodec flv_decoder;
1497 extern AVCodec rv10_decoder;
1498 extern AVCodec svq1_decoder;
1499 extern AVCodec svq3_decoder;
1500 extern AVCodec dvvideo_decoder;
1501 extern AVCodec wmav1_decoder;
1502 extern AVCodec wmav2_decoder;
1503 extern AVCodec mjpeg_decoder;
1504 extern AVCodec mjpegb_decoder;
1505 extern AVCodec sp5x_decoder;
1506 extern AVCodec mp2_decoder;
1507 extern AVCodec mp3_decoder;
1508 extern AVCodec mace3_decoder;
1509 extern AVCodec mace6_decoder;
1510 extern AVCodec huffyuv_decoder;
1511 extern AVCodec oggvorbis_decoder;
1512 extern AVCodec cyuv_decoder;
1513 extern AVCodec h264_decoder;
1514 extern AVCodec indeo3_decoder;
1515 extern AVCodec vp3_decoder;
1516 extern AVCodec theora_decoder;
1517 extern AVCodec amr_nb_decoder;
1518 extern AVCodec amr_nb_encoder;
1519 extern AVCodec amr_wb_encoder;
1520 extern AVCodec amr_wb_decoder;
1521 extern AVCodec aac_decoder;
1522 extern AVCodec mpeg4aac_decoder;
1523 extern AVCodec asv1_decoder;
1524 extern AVCodec asv2_decoder;
1525 extern AVCodec vcr1_decoder;
1526 extern AVCodec cljr_decoder;
1527 extern AVCodec ffv1_decoder;
1528 extern AVCodec fourxm_decoder;
1529 extern AVCodec mdec_decoder;
1530 extern AVCodec roq_decoder;
1531 extern AVCodec interplay_video_decoder;
1532 extern AVCodec xan_wc3_decoder;
1533 extern AVCodec rpza_decoder;
1534 extern AVCodec cinepak_decoder;
1535 extern AVCodec msrle_decoder;
1536 extern AVCodec msvideo1_decoder;
1537 extern AVCodec vqa_decoder;
1538 extern AVCodec idcin_decoder;
1539 extern AVCodec ra_144_decoder;
1540 extern AVCodec ra_288_decoder;
1541 extern AVCodec roq_dpcm_decoder;
1542 extern AVCodec interplay_dpcm_decoder;
1543 extern AVCodec xan_dpcm_decoder;
1546 #define PCM_CODEC(id, name) \
1547 extern AVCodec name ## _decoder; \
1548 extern AVCodec name ## _encoder
1550 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1551 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1552 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1553 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1554 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1555 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1556 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1557 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1561 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1562 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1563 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1564 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1565 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1566 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1567 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1568 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1569 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1573 /* dummy raw video codec */
1574 extern AVCodec rawvideo_encoder;
1575 extern AVCodec rawvideo_decoder;
1577 /* the following codecs use external GPL libs */
1578 extern AVCodec ac3_decoder;
1582 struct ReSampleContext;
1584 typedef struct ReSampleContext ReSampleContext;
1586 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1587 int output_rate, int input_rate);
1588 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1589 void audio_resample_close(ReSampleContext *s);
1591 /* YUV420 format is assumed ! */
1593 struct ImgReSampleContext;
1595 typedef struct ImgReSampleContext ImgReSampleContext;
1597 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1598 int input_width, int input_height);
1600 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1601 int iwidth, int iheight,
1602 int topBand, int bottomBand,
1603 int leftBand, int rightBand);
1605 void img_resample(ImgReSampleContext *s,
1606 AVPicture *output, const AVPicture *input);
1608 void img_resample_close(ImgReSampleContext *s);
1611 * Allocate memory for a picture. Call avpicture_free to free it.
1613 * @param picture the picture to be filled in.
1614 * @param pix_fmt the format of the picture.
1615 * @param width the width of the picture.
1616 * @param height the height of the picture.
1617 * @return 0 if successful, -1 if not.
1619 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1621 /* Free a picture previously allocated by avpicture_alloc. */
1622 void avpicture_free(AVPicture *picture);
1624 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1625 int pix_fmt, int width, int height);
1626 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1627 unsigned char *dest, int dest_size);
1628 int avpicture_get_size(int pix_fmt, int width, int height);
1629 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1630 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1631 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1633 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1634 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1635 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1636 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1637 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1638 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1640 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1642 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1643 int has_alpha, int *loss_ptr);
1645 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1646 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1647 int img_get_alpha_info(const AVPicture *src,
1648 int pix_fmt, int width, int height);
1650 /* convert among pixel formats */
1651 int img_convert(AVPicture *dst, int dst_pix_fmt,
1652 const AVPicture *src, int pix_fmt,
1653 int width, int height);
1655 /* deinterlace a picture */
1656 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1657 int pix_fmt, int width, int height);
1659 /* external high level API */
1661 extern AVCodec *first_avcodec;
1663 /* returns LIBAVCODEC_VERSION_INT constant */
1664 unsigned avcodec_version(void);
1665 /* returns LIBAVCODEC_BUILD constant */
1666 unsigned avcodec_build(void);
1667 void avcodec_init(void);
1669 void register_avcodec(AVCodec *format);
1670 AVCodec *avcodec_find_encoder(enum CodecID id);
1671 AVCodec *avcodec_find_encoder_by_name(const char *name);
1672 AVCodec *avcodec_find_decoder(enum CodecID id);
1673 AVCodec *avcodec_find_decoder_by_name(const char *name);
1674 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1676 void avcodec_get_context_defaults(AVCodecContext *s);
1677 AVCodecContext *avcodec_alloc_context(void);
1678 AVFrame *avcodec_alloc_frame(void);
1680 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1681 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1682 void avcodec_default_free_buffers(AVCodecContext *s);
1685 * opens / inits the AVCodecContext.
1688 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1690 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1691 int *frame_size_ptr,
1692 uint8_t *buf, int buf_size);
1693 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1694 int *got_picture_ptr,
1695 uint8_t *buf, int buf_size);
1696 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1698 uint8_t *buf, int buf_size);
1699 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1700 const short *samples);
1701 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1702 const AVFrame *pict);
1704 int avcodec_close(AVCodecContext *avctx);
1706 void avcodec_register_all(void);
1708 void avcodec_flush_buffers(AVCodecContext *avctx);
1710 /* misc usefull functions */
1713 * returns a single letter to describe the picture type
1715 char av_get_pict_type_char(int pict_type);
1718 * reduce a fraction.
1719 * this is usefull for framerate calculations
1720 * @param max the maximum allowed for dst_nom & dst_den
1721 * @return 1 if exact, 0 otherwise
1723 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1726 * rescale a 64bit integer.
1727 * a simple a*b/c isnt possible as it can overflow
1729 int64_t av_rescale(int64_t a, int b, int c);
1733 * Interface for 0.5.0 version
1735 * do not even think about it's usage for this moment
1739 /// compressed size used from given memory buffer
1741 /// I/P/B frame type
1747 * order can't be changed - once it was defined
1751 AVC_OPEN_BY_NAME = 0xACA000,
1752 AVC_OPEN_BY_CODEC_ID,
1757 // pin - struct { uint8_t* src, uint_t src_size }
1758 // pout - struct { AVPicture* img, consumed_bytes,
1760 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1761 // pout - uint_t used_from_dest_size
1764 // query/get video commands
1765 AVC_GET_VERSION = 0xACB000,
1769 AVC_GET_QUANT_TABLE,
1772 // query/get audio commands
1773 AVC_GET_FRAME_SIZE = 0xABC000,
1775 // maybe define some simple structure which
1776 // might be passed to the user - but they can't
1777 // contain any codec specific parts and these
1778 // calls are usualy necessary only few times
1780 // set video commands
1781 AVC_SET_WIDTH = 0xACD000,
1784 // set video encoding commands
1785 AVC_SET_FRAME_RATE = 0xACD800,
1789 // set audio commands
1790 AVC_SET_SAMPLE_RATE = 0xACE000,
1796 * \param handle allocated private structure by libavcodec
1797 * for initialization pass NULL - will be returned pout
1798 * user is supposed to know nothing about its structure
1799 * \param cmd type of operation to be performed
1800 * \param pint input parameter
1801 * \param pout output parameter
1803 * \returns command status - eventually for query command it might return
1804 * integer resulting value
1806 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1809 void *av_malloc(unsigned int size);
1810 void *av_mallocz(unsigned int size);
1811 void *av_realloc(void *ptr, unsigned int size);
1812 void av_free(void *ptr);
1813 char *av_strdup(const char *s);
1814 void __av_freep(void **ptr);
1815 #define av_freep(p) __av_freep((void **)(p))
1816 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1817 /* for static data only */
1818 /* call av_free_static to release all staticaly allocated tables */
1819 void av_free_static(void);
1820 void *__av_mallocz_static(void** location, unsigned int size);
1821 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1823 /* add by bero : in adx.c */
1824 int is_adx(const unsigned char *buf,size_t bufsize);
1830 #endif /* AVCODEC_H */