6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4647
9 #define LIBAVCODEC_BUILD_STR "4647"
40 /* various pcm "codecs" */
50 /* various adpcm codecs */
51 CODEC_ID_ADPCM_IMA_QT,
52 CODEC_ID_ADPCM_IMA_WAV,
57 CODEC_TYPE_UNKNOWN = -1,
82 /* currently unused, may be used if 24/32 bits samples ever supported */
84 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
88 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
91 * Required number of zero bytes at the end of the input bitstream for decoding.
92 * to avoid overreading (and possibly segfaulting)
94 #define FF_INPUT_BUFFER_PADDING_SIZE 8
96 /* motion estimation type, EPZS by default */
106 typedef struct RcOverride{
109 int qscale; // if this is 0 then quality_factor will be used instead
110 float quality_factor;
113 /* only for ME compatiblity with old apps */
114 extern int motion_estimation_method;
116 /* ME algos sorted by quality */
117 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
118 ME_X1, ME_EPZS, ME_FULL };
121 #define FF_MAX_B_FRAMES 8
124 these flags can be passed in AVCodecContext.flags before initing
125 Note: note not everything is supported yet
128 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
129 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
130 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
131 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
132 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
133 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
134 /* parent program gurantees that the input for b-frame containing streams is not written to
135 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
136 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
137 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
138 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
139 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
140 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
141 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
142 #define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
143 #define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
144 of only at frame boundaries */
145 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
146 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
147 #define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
148 #define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
150 /* codec capabilities */
152 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
153 #define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
154 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
156 #define CODEC_CAP_PARSE_ONLY 0x0004
157 #define CODEC_CAP_TRUNCATED 0x0008
159 #define FRAME_RATE_BASE 10000
161 #define FF_COMMON_FRAME \
165 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
166 * this isnt used by lavc unless the default get/release_buffer() is used\
172 * 1 -> keyframe, 0-> not\
173 * encoding: set by lavc\
174 * decoding: set by lavc\
179 * picture type of the frame, see ?_TYPE below\
180 * encoding: set by lavc for coded_picture (and set by user for input)\
181 * decoding: set by lavc\
186 * presentation timestamp in micro seconds (time when frame should be shown to user)\
187 * if 0 then the frame_rate will be used as reference\
188 * encoding: MUST be set by user\
189 * decoding: set by lavc\
194 * picture number in bitstream order.\
196 * decoding: set by lavc\
198 int coded_picture_number;\
201 * decoding: set by lavc\
202 * picture number in display order.\
204 int display_picture_number;\
207 * quality (between 1 (good) and 31 (bad)) \
208 * encoding: set by lavc for coded_picture (and set by user for input)\
209 * decoding: set by lavc\
214 * buffer age (1->was last buffer and dint change, 2->..., ...).\
215 * set to something large if the buffer has not been used yet \
217 * decoding: MUST be set by get_buffer()\
222 * is this picture used as reference\
224 * decoding: set by lavc (before get_buffer() call))\
231 * decoding: set by lavc\
233 int8_t *qscale_table;\
237 * decoding: set by lavc\
242 * mbskip_table[mb]>=1 if MB didnt change\
243 * stride= mb_width = (width+15)>>4\
245 * decoding: set by lavc\
247 uint8_t *mbskip_table;\
250 * for some private data of the user\
252 * decoding: set by user\
258 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
264 * type of the buffer (to keep track of who has to dealloc data[*])\
265 * encoding: set by the one who allocs it\
266 * decoding: set by the one who allocs it\
267 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
271 #define FF_BUFFER_TYPE_INTERNAL 1
272 #define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
273 #define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
276 #define FF_I_TYPE 1 // Intra
277 #define FF_P_TYPE 2 // Predicted
278 #define FF_B_TYPE 3 // Bi-dir predicted
279 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
281 typedef struct AVFrame {
285 typedef struct AVCodecContext {
287 * the average bitrate
288 * encoding: set by user. unused for constant quantizer encoding
289 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
294 * number of bits the bitstream is allowed to diverge from the reference
295 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
296 * encoding: set by user. unused for constant quantizer encoding
299 int bit_rate_tolerance;
303 * encoding: set by user.
304 * decoding: set by user.
309 * some codecs needs additionnal format info. It is stored here
310 * encoding: set by user.
311 * decoding: set by lavc. (FIXME is this ok?)
316 * motion estimation algorithm used for video coding
317 * encoding: MUST be set by user.
323 * some codecs need / can use extra-data like huffman tables
324 * mjpeg: huffman tables
325 * rv10: additional flags
326 * mpeg4: global headers (they can be in the bitstream or here)
327 * encoding: set/allocated/freed by lavc.
328 * decoding: set/allocated/freed by user.
335 * frames per sec multiplied by FRAME_RATE_BASE
336 * for variable fps this is the precission, so if the timestamps
337 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
338 * encoding: MUST be set by user
339 * decoding: set by lavc. 0 or the frame_rate if available
344 * encoding: MUST be set by user.
345 * decoding: set by user, some codecs might override / change it during playback
349 #define FF_ASPECT_SQUARE 1
350 #define FF_ASPECT_4_3_625 2
351 #define FF_ASPECT_4_3_525 3
352 #define FF_ASPECT_16_9_625 4
353 #define FF_ASPECT_16_9_525 5
354 #define FF_ASPECT_EXTENDED 15
357 * the number of pictures in a group of pitures, or 0 for intra_only
358 * encoding: set by user.
364 * pixel format, see PIX_FMT_xxx
366 * decoding: set by lavc.
368 enum PixelFormat pix_fmt;
370 int repeat_pict; /* when decoding, this signal how much the picture */
371 /* must be delayed. */
372 /* extra_delay = (repeat_pict / 2) * (1/fps) */
375 * if non NULL, 'draw_horiz_band' is called by the libavcodec
376 * decoder to draw an horizontal band. It improve cache usage. Not
377 * all codecs can do that. You must check the codec capabilities
380 * decoding: set by user.
382 void (*draw_horiz_band)(struct AVCodecContext *s,
383 UINT8 **src_ptr, int linesize,
384 int y, int width, int height);
387 int sample_rate; /* samples per sec */
389 int sample_fmt; /* sample format, currenly unused */
391 /* the following data should not be initialized */
392 int frame_size; /* in samples, initialized when calling 'init' */
393 int frame_number; /* audio or video frame number */
394 int real_pict_num; /* returns the real picture number of
395 previous encoded frame */
398 * number of frames the decoded output will be delayed relative to
400 * encoding: set by lavc.
405 /* encoding parameters */
406 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
407 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
411 * encoding: set by user.
418 * encoding: set by user.
424 * maximum quantizer difference etween frames
425 * encoding: set by user.
431 * maximum number of b frames between non b frames
432 * note: the output will be delayed by max_b_frames+1 relative to the input
433 * encoding: set by user.
439 * qscale factor between ip and b frames
440 * encoding: set by user.
443 float b_quant_factor;
445 /** obsolete FIXME remove */
447 int b_frame_strategy;
451 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
455 struct AVCodec *codec;
459 /* The following data is for RTP friendly coding */
460 /* By now only H.263/H.263+/MPEG4 coder honours this */
461 int rtp_mode; /* 1 for activate RTP friendly-mode */
462 /* highers numbers represent more error-prone */
463 /* enviroments, by now just "1" exist */
465 int rtp_payload_size; /* The size of the RTP payload, the coder will */
466 /* do it's best to deliver a chunk with size */
467 /* below rtp_payload_size, the chunk will start */
468 /* with a start code on some codecs like H.263 */
469 /* This doesn't take account of any particular */
470 /* headers inside the transmited RTP payload */
473 /* The RTP callcack: This function is called */
474 /* every time the encoder as a packet to send */
475 /* Depends on the encoder if the data starts */
476 /* with a Start Code (it should) H.263 does */
477 void (*rtp_callback)(void *data, int size, int packet_number);
479 /* statistics, used for 2-pass encoding */
490 * number of bits used for the previously encoded frame
491 * encoding: set by lavc
492 * decoding: - for audio - bits_per_sample
497 * private data of the user, can be used to carry app specific stuff
498 * encoding: set by user
499 * decoding: set by user
504 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
505 enum CodecID codec_id; /* see CODEC_ID_xxx */
506 unsigned int codec_tag; /* codec tag, only used if unknown codec */
509 * workaround bugs in encoders which sometimes cannot be detected automatically
511 * decoding: set by user
514 #define FF_BUG_AUTODETECT 1 //autodetection
515 #define FF_BUG_OLD_MSMPEG4 2
516 #define FF_BUG_XVID_ILACE 4
517 #define FF_BUG_UMP4 8
518 #define FF_BUG_NO_PADDING 16
519 #define FF_BUG_AC_VLC 32
520 #define FF_BUG_QPEL_CHROMA 64
521 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
524 * encoding: set by user
527 int luma_elim_threshold;
530 * encoding: set by user
533 int chroma_elim_threshold;
536 * strictly follow the std (MPEG4, ...)
537 * encoding: set by user
540 int strict_std_compliance;
543 * qscale offset between ip and b frames
544 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
545 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
546 * encoding: set by user.
549 float b_quant_offset;
552 * error resilience higher values will detect more errors but may missdetect
553 * some more or less valid parts as errors
555 * decoding: set by user
557 int error_resilience;
558 #define FF_ER_CAREFULL 1
559 #define FF_ER_COMPLIANT 2
560 #define FF_ER_AGGRESSIVE 3
561 #define FF_ER_VERY_AGGRESSIVE 4
564 * called at the beginning of each frame to get a buffer for it.
565 * if pic.reference is set then the frame will be read later by lavc
567 * decoding: set by lavc, user can override
569 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
572 * called to release buffers which where allocated with get_buffer.
573 * a released buffer can be reused in get_buffer()
574 * pic.data[*] must be set to NULL
576 * decoding: set by lavc, user can override
578 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
581 * is 1 if the decoded stream contains b frames, 0 otherwise
583 * decoding: set by lavc
587 int block_align; /* used by some WAV based audio codecs */
589 int parse_only; /* decoding only: if true, only parsing is done
590 (function avcodec_parse_frame()). The frame
591 data is returned. Only MPEG codecs support this now. */
594 * 0-> h263 quant 1-> mpeg quant
595 * encoding: set by user.
601 * pass1 encoding statistics output buffer
602 * encoding: set by lavc
605 char *stats_out; /* encoding statistics output buffer */
608 * pass2 encoding statistics input buffer.
609 * concatenated stuff from stats_out of pass1 should be placed here
610 * encoding: allocated/set/freed by user
616 * ratecontrol qmin qmax limiting method
617 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
618 * encoding: set by user.
627 * ratecontrol override, see RcOverride
628 * encoding: allocated/set/freed by user.
631 RcOverride *rc_override;
632 int rc_override_count;
635 * rate control equation
636 * encoding: set by user
643 * encoding: set by user.
650 * encoding: set by user.
656 * decoder bitstream buffer size
657 * encoding: set by user.
661 float rc_buffer_aggressivity;
664 * qscale factor between p and i frames
665 * encoding: set by user.
668 float i_quant_factor;
671 * qscale offset between p and i frames
672 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
673 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
674 * encoding: set by user.
677 float i_quant_offset;
680 * initial complexity for pass1 ratecontrol
681 * encoding: set by user.
684 float rc_initial_cplx;
687 * dct algorithm, see FF_DCT_* below
688 * encoding: set by user
692 #define FF_DCT_AUTO 0
693 #define FF_DCT_FASTINT 1
696 #define FF_DCT_MLIB 4
697 #define FF_DCT_ALTIVEC 5
700 * luminance masking (0-> disabled)
701 * encoding: set by user
707 * temporary complexity masking (0-> disabled)
708 * encoding: set by user
711 float temporal_cplx_masking;
714 * spatial complexity masking (0-> disabled)
715 * encoding: set by user
718 float spatial_cplx_masking;
721 * p block masking (0-> disabled)
722 * encoding: set by user
728 * darkness masking (0-> disabled)
729 * encoding: set by user
735 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
736 * this is used to workaround some encoder bugs
738 * decoding: set by user, will be converted to upper case by lavc during init
743 * idct algorithm, see FF_IDCT_* below
744 * encoding: set by user
745 * decoding: set by user
748 #define FF_IDCT_AUTO 0
749 #define FF_IDCT_INT 1
750 #define FF_IDCT_SIMPLE 2
751 #define FF_IDCT_SIMPLEMMX 3
752 #define FF_IDCT_LIBMPEG2MMX 4
753 #define FF_IDCT_PS2 5
754 #define FF_IDCT_MLIB 6
755 #define FF_IDCT_ARM 7
756 #define FF_IDCT_ALTIVEC 8
760 * encoding: set by lavc
761 * decoding: set by user (or 0)
765 * slice offsets in the frame in bytes
766 * encoding: set/allocated by lavc
767 * decoding: set/allocated by user (or NULL)
772 * error concealment flags
774 * decoding: set by user
776 int error_concealment;
777 #define FF_EC_GUESS_MVS 1
778 #define FF_EC_DEBLOCK 2
781 * dsp_mask could be used to disable unwanted
782 * CPU features (i.e. MMX, SSE. ...)
787 * bits per sample/pixel from the demuxer (needed for huffyuv)
788 * encoding: set by lavc
789 * decoding: set by user
794 * prediction method (needed for huffyuv)
795 * encoding: set by user
798 int prediction_method;
799 #define FF_PRED_LEFT 0
800 #define FF_PRED_PLANE 1
801 #define FF_PRED_MEDIAN 2
804 * aspect ratio. (0 if unknown)
805 * encoding: set by user.
806 * decoding: set by lavc.
811 * the picture in the bitstream
812 * encoding: set by lavc
813 * decoding: set by lavc
815 AVFrame *coded_frame;
819 * encoding: set by user.
820 * decoding: set by user.
823 #define FF_DEBUG_PICT_INFO 1
824 #define FF_DEBUG_RC 2
825 #define FF_DEBUG_BITSTREAM 4
826 #define FF_DEBUG_MB_TYPE 8
827 #define FF_DEBUG_QP 16
828 #define FF_DEBUG_MV 32
829 #define FF_DEBUG_VIS_MV 64
830 #define FF_DEBUG_SKIP 128
834 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
840 * minimum MB quantizer
841 * encoding: set by user.
847 * maximum MB quantizer
848 * encoding: set by user.
854 * motion estimation compare function
855 * encoding: set by user.
860 * subpixel motion estimation compare function
861 * encoding: set by user.
866 * macroblock compare function (not supported yet)
867 * encoding: set by user.
873 #define FF_CMP_SATD 2
875 #define FF_CMP_PSNR 4
878 #define FF_CMP_ZERO 7
879 #define FF_CMP_CHROMA 256
883 * encoding: set by user.
889 typedef struct AVCodec {
894 int (*init)(AVCodecContext *);
895 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
896 int (*close)(AVCodecContext *);
897 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
898 UINT8 *buf, int buf_size);
900 struct AVCodec *next;
904 * four components are given, that's all.
905 * the last component is alpha
907 typedef struct AVPicture {
912 extern AVCodec ac3_encoder;
913 extern AVCodec mp2_encoder;
914 extern AVCodec mp3lame_encoder;
915 extern AVCodec oggvorbis_encoder;
916 extern AVCodec mpeg1video_encoder;
917 extern AVCodec h263_encoder;
918 extern AVCodec h263p_encoder;
919 extern AVCodec rv10_encoder;
920 extern AVCodec mjpeg_encoder;
921 extern AVCodec mpeg4_encoder;
922 extern AVCodec msmpeg4v1_encoder;
923 extern AVCodec msmpeg4v2_encoder;
924 extern AVCodec msmpeg4v3_encoder;
925 extern AVCodec wmv1_encoder;
926 extern AVCodec wmv2_encoder;
927 extern AVCodec huffyuv_encoder;
929 extern AVCodec h263_decoder;
930 extern AVCodec mpeg4_decoder;
931 extern AVCodec msmpeg4v1_decoder;
932 extern AVCodec msmpeg4v2_decoder;
933 extern AVCodec msmpeg4v3_decoder;
934 extern AVCodec wmv1_decoder;
935 extern AVCodec wmv2_decoder;
936 extern AVCodec mpeg_decoder;
937 extern AVCodec h263i_decoder;
938 extern AVCodec rv10_decoder;
939 extern AVCodec svq1_decoder;
940 extern AVCodec dvvideo_decoder;
941 extern AVCodec dvaudio_decoder;
942 extern AVCodec wmav1_decoder;
943 extern AVCodec wmav2_decoder;
944 extern AVCodec mjpeg_decoder;
945 extern AVCodec mjpegb_decoder;
946 extern AVCodec mp2_decoder;
947 extern AVCodec mp3_decoder;
948 extern AVCodec mace3_decoder;
949 extern AVCodec mace6_decoder;
950 extern AVCodec huffyuv_decoder;
951 extern AVCodec oggvorbis_decoder;
954 #define PCM_CODEC(id, name) \
955 extern AVCodec name ## _decoder; \
956 extern AVCodec name ## _encoder
958 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
959 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
960 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
961 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
962 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
963 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
964 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
965 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
969 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
970 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
971 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
975 /* dummy raw video codec */
976 extern AVCodec rawvideo_codec;
978 /* the following codecs use external GPL libs */
979 extern AVCodec ac3_decoder;
983 struct ReSampleContext;
985 typedef struct ReSampleContext ReSampleContext;
987 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
988 int output_rate, int input_rate);
989 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
990 void audio_resample_close(ReSampleContext *s);
992 /* YUV420 format is assumed ! */
994 struct ImgReSampleContext;
996 typedef struct ImgReSampleContext ImgReSampleContext;
998 ImgReSampleContext *img_resample_init(int output_width, int output_height,
999 int input_width, int input_height);
1001 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1002 int iwidth, int iheight,
1003 int topBand, int bottomBand,
1004 int leftBand, int rightBand);
1006 void img_resample(ImgReSampleContext *s,
1007 AVPicture *output, AVPicture *input);
1009 void img_resample_close(ImgReSampleContext *s);
1011 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
1012 int pix_fmt, int width, int height);
1013 int avpicture_get_size(int pix_fmt, int width, int height);
1014 void avcodec_get_chroma_sub_sample(int fmt, int *h_shift, int *v_shift);
1016 /* convert among pixel formats */
1017 int img_convert(AVPicture *dst, int dst_pix_fmt,
1018 AVPicture *src, int pix_fmt,
1019 int width, int height);
1021 /* deinterlace a picture */
1022 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1023 int pix_fmt, int width, int height);
1025 /* external high level API */
1027 extern AVCodec *first_avcodec;
1029 /* returns LIBAVCODEC_VERSION_INT constant */
1030 unsigned avcodec_version(void);
1031 /* returns LIBAVCODEC_BUILD constant */
1032 unsigned avcodec_build(void);
1033 void avcodec_init(void);
1035 void avcodec_set_bit_exact(void);
1037 void register_avcodec(AVCodec *format);
1038 AVCodec *avcodec_find_encoder(enum CodecID id);
1039 AVCodec *avcodec_find_encoder_by_name(const char *name);
1040 AVCodec *avcodec_find_decoder(enum CodecID id);
1041 AVCodec *avcodec_find_decoder_by_name(const char *name);
1042 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1044 void avcodec_get_context_defaults(AVCodecContext *s);
1045 AVCodecContext *avcodec_alloc_context(void);
1046 AVFrame *avcodec_alloc_frame(void);
1048 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1049 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1051 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1052 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1053 int *frame_size_ptr,
1054 UINT8 *buf, int buf_size);
1055 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1056 int *got_picture_ptr,
1057 UINT8 *buf, int buf_size);
1058 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1060 UINT8 *buf, int buf_size);
1061 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1062 const short *samples);
1063 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1064 const AVFrame *pict);
1066 int avcodec_close(AVCodecContext *avctx);
1068 void avcodec_register_all(void);
1070 void avcodec_flush_buffers(AVCodecContext *avctx);
1073 * Interface for 0.5.0 version
1075 * do not even think about it's usage for this moment
1079 // compressed size used from given memory buffer
1081 /// I/P/B frame type
1087 * order can't be changed - once it was defined
1091 AVC_OPEN_BY_NAME = 0xACA000,
1092 AVC_OPEN_BY_CODEC_ID,
1097 // pin - struct { uint8_t* src, uint_t src_size }
1098 // pout - struct { AVPicture* img, consumed_bytes,
1100 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1101 // pout - uint_t used_from_dest_size
1104 // query/get video commands
1105 AVC_GET_VERSION = 0xACB000,
1109 AVC_GET_QUANT_TABLE,
1112 // query/get audio commands
1113 AVC_GET_FRAME_SIZE = 0xABC000,
1115 // maybe define some simple structure which
1116 // might be passed to the user - but they can't
1117 // contain any codec specific parts and these
1118 // calls are usualy necessary only few times
1120 // set video commands
1121 AVC_SET_WIDTH = 0xACD000,
1124 // set video encoding commands
1125 AVC_SET_FRAME_RATE = 0xACD800,
1129 // set audio commands
1130 AVC_SET_SAMPLE_RATE = 0xACE000,
1136 * \param handle allocated private structure by libavcodec
1137 * for initialization pass NULL - will be returned pout
1138 * user is supposed to know nothing about its structure
1139 * \param cmd type of operation to be performed
1140 * \param pint input parameter
1141 * \param pout output parameter
1143 * \returns command status - eventually for query command it might return
1144 * integer resulting value
1146 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1149 void *av_malloc(unsigned int size);
1150 void *av_mallocz(unsigned int size);
1151 void av_free(void *ptr);
1152 void __av_freep(void **ptr);
1153 #define av_freep(p) __av_freep((void **)(p))
1154 /* for static data only */
1155 /* call av_free_static to release all staticaly allocated tables */
1156 void av_free_static();
1157 void *__av_mallocz_static(void** location, unsigned int size);
1158 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1160 #endif /* AVCODEC_H */