10 #define LIBAVCODEC_VERSION_INT 0x000406
11 #define LIBAVCODEC_VERSION "0.4.6"
12 #define LIBAVCODEC_BUILD 4654
13 #define LIBAVCODEC_BUILD_STR "4654"
44 /* various pcm "codecs" */
54 /* various adpcm codecs */
55 CODEC_ID_ADPCM_IMA_QT,
56 CODEC_ID_ADPCM_IMA_WAV,
61 CODEC_TYPE_UNKNOWN = -1,
69 PIX_FMT_RGB24, /* 3 bytes, R is first */
70 PIX_FMT_BGR24, /* 3 bytes, B is first */
73 PIX_FMT_RGBA32, /* always stored in cpu endianness */
76 PIX_FMT_RGB565, /* always stored in cpu endianness */
77 PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
79 PIX_FMT_MONOWHITE, /* 0 is white */
80 PIX_FMT_MONOBLACK, /* 0 is black */
84 /* currently unused, may be used if 24/32 bits samples ever supported */
86 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
90 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
93 * Required number of zero bytes at the end of the input bitstream for decoding.
94 * to avoid overreading (and possibly segfaulting)
96 #define FF_INPUT_BUFFER_PADDING_SIZE 8
98 /* motion estimation type, EPZS by default */
108 typedef struct RcOverride{
111 int qscale; // if this is 0 then quality_factor will be used instead
112 float quality_factor;
115 /* only for ME compatiblity with old apps */
116 extern int motion_estimation_method;
118 /* ME algos sorted by quality */
119 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
120 ME_X1, ME_EPZS, ME_FULL };
123 #define FF_MAX_B_FRAMES 8
126 these flags can be passed in AVCodecContext.flags before initing
127 Note: note not everything is supported yet
130 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
131 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
132 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
133 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
134 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
135 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
136 /* parent program gurantees that the input for b-frame containing streams is not written to
137 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
138 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
139 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
140 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
141 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
142 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
143 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
144 #define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
145 #define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
146 of only at frame boundaries */
147 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
148 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
149 #define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
150 #define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
151 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
152 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
154 /* codec capabilities */
156 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
157 #define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
158 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
160 #define CODEC_CAP_PARSE_ONLY 0x0004
161 #define CODEC_CAP_TRUNCATED 0x0008
163 #define FRAME_RATE_BASE 10000
165 #define FF_COMMON_FRAME \
169 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
170 * this isnt used by lavc unless the default get/release_buffer() is used\
176 * 1 -> keyframe, 0-> not\
177 * encoding: set by lavc\
178 * decoding: set by lavc\
183 * picture type of the frame, see ?_TYPE below\
184 * encoding: set by lavc for coded_picture (and set by user for input)\
185 * decoding: set by lavc\
190 * presentation timestamp in micro seconds (time when frame should be shown to user)\
191 * if 0 then the frame_rate will be used as reference\
192 * encoding: MUST be set by user\
193 * decoding: set by lavc\
198 * picture number in bitstream order.\
200 * decoding: set by lavc\
202 int coded_picture_number;\
205 * decoding: set by lavc\
206 * picture number in display order.\
208 int display_picture_number;\
211 * quality (between 1 (good) and 31 (bad)) \
212 * encoding: set by lavc for coded_picture (and set by user for input)\
213 * decoding: set by lavc\
218 * buffer age (1->was last buffer and dint change, 2->..., ...).\
219 * set to something large if the buffer has not been used yet \
221 * decoding: MUST be set by get_buffer()\
226 * is this picture used as reference\
228 * decoding: set by lavc (before get_buffer() call))\
235 * decoding: set by lavc\
237 int8_t *qscale_table;\
241 * decoding: set by lavc\
246 * mbskip_table[mb]>=1 if MB didnt change\
247 * stride= mb_width = (width+15)>>4\
249 * decoding: set by lavc\
251 uint8_t *mbskip_table;\
254 * for some private data of the user\
256 * decoding: set by user\
262 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
268 * type of the buffer (to keep track of who has to dealloc data[*])\
269 * encoding: set by the one who allocs it\
270 * decoding: set by the one who allocs it\
271 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
275 #define FF_BUFFER_TYPE_INTERNAL 1
276 #define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
277 #define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
280 #define FF_I_TYPE 1 // Intra
281 #define FF_P_TYPE 2 // Predicted
282 #define FF_B_TYPE 3 // Bi-dir predicted
283 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
285 typedef struct AVFrame {
289 typedef struct AVCodecContext {
291 * the average bitrate
292 * encoding: set by user. unused for constant quantizer encoding
293 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
298 * number of bits the bitstream is allowed to diverge from the reference
299 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
300 * encoding: set by user. unused for constant quantizer encoding
303 int bit_rate_tolerance;
307 * encoding: set by user.
308 * decoding: set by user.
313 * some codecs needs additionnal format info. It is stored here
314 * encoding: set by user.
315 * decoding: set by lavc. (FIXME is this ok?)
320 * motion estimation algorithm used for video coding
321 * encoding: MUST be set by user.
327 * some codecs need / can use extra-data like huffman tables
328 * mjpeg: huffman tables
329 * rv10: additional flags
330 * mpeg4: global headers (they can be in the bitstream or here)
331 * encoding: set/allocated/freed by lavc.
332 * decoding: set/allocated/freed by user.
339 * frames per sec multiplied by FRAME_RATE_BASE
340 * for variable fps this is the precission, so if the timestamps
341 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
342 * encoding: MUST be set by user
343 * decoding: set by lavc. 0 or the frame_rate if available
348 * encoding: MUST be set by user.
349 * decoding: set by user, some codecs might override / change it during playback
353 #define FF_ASPECT_SQUARE 1
354 #define FF_ASPECT_4_3_625 2
355 #define FF_ASPECT_4_3_525 3
356 #define FF_ASPECT_16_9_625 4
357 #define FF_ASPECT_16_9_525 5
358 #define FF_ASPECT_EXTENDED 15
361 * the number of pictures in a group of pitures, or 0 for intra_only
362 * encoding: set by user.
368 * pixel format, see PIX_FMT_xxx
370 * decoding: set by lavc.
372 enum PixelFormat pix_fmt;
374 int repeat_pict; /* when decoding, this signal how much the picture */
375 /* must be delayed. */
376 /* extra_delay = (repeat_pict / 2) * (1/fps) */
379 * if non NULL, 'draw_horiz_band' is called by the libavcodec
380 * decoder to draw an horizontal band. It improve cache usage. Not
381 * all codecs can do that. You must check the codec capabilities
384 * decoding: set by user.
386 void (*draw_horiz_band)(struct AVCodecContext *s,
387 UINT8 **src_ptr, int linesize,
388 int y, int width, int height);
391 int sample_rate; /* samples per sec */
393 int sample_fmt; /* sample format, currenly unused */
395 /* the following data should not be initialized */
396 int frame_size; /* in samples, initialized when calling 'init' */
397 int frame_number; /* audio or video frame number */
398 int real_pict_num; /* returns the real picture number of
399 previous encoded frame */
402 * number of frames the decoded output will be delayed relative to
404 * encoding: set by lavc.
409 /* encoding parameters */
410 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
411 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
415 * encoding: set by user.
422 * encoding: set by user.
428 * maximum quantizer difference etween frames
429 * encoding: set by user.
435 * maximum number of b frames between non b frames
436 * note: the output will be delayed by max_b_frames+1 relative to the input
437 * encoding: set by user.
443 * qscale factor between ip and b frames
444 * encoding: set by user.
447 float b_quant_factor;
449 /** obsolete FIXME remove */
451 int b_frame_strategy;
455 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
459 struct AVCodec *codec;
463 /* The following data is for RTP friendly coding */
464 /* By now only H.263/H.263+/MPEG4 coder honours this */
465 int rtp_mode; /* 1 for activate RTP friendly-mode */
466 /* highers numbers represent more error-prone */
467 /* enviroments, by now just "1" exist */
469 int rtp_payload_size; /* The size of the RTP payload, the coder will */
470 /* do it's best to deliver a chunk with size */
471 /* below rtp_payload_size, the chunk will start */
472 /* with a start code on some codecs like H.263 */
473 /* This doesn't take account of any particular */
474 /* headers inside the transmited RTP payload */
477 /* The RTP callcack: This function is called */
478 /* every time the encoder as a packet to send */
479 /* Depends on the encoder if the data starts */
480 /* with a Start Code (it should) H.263 does */
481 void (*rtp_callback)(void *data, int size, int packet_number);
483 /* statistics, used for 2-pass encoding */
494 * number of bits used for the previously encoded frame
495 * encoding: set by lavc
496 * decoding: - for audio - bits_per_sample
501 * private data of the user, can be used to carry app specific stuff
502 * encoding: set by user
503 * decoding: set by user
508 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
509 enum CodecID codec_id; /* see CODEC_ID_xxx */
510 unsigned int codec_tag; /* codec tag, only used if unknown codec */
513 * workaround bugs in encoders which sometimes cannot be detected automatically
515 * decoding: set by user
518 #define FF_BUG_AUTODETECT 1 //autodetection
519 #define FF_BUG_OLD_MSMPEG4 2
520 #define FF_BUG_XVID_ILACE 4
521 #define FF_BUG_UMP4 8
522 #define FF_BUG_NO_PADDING 16
523 #define FF_BUG_AC_VLC 32
524 #define FF_BUG_QPEL_CHROMA 64
525 #define FF_BUG_STD_QPEL 128
526 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
529 * encoding: set by user
532 int luma_elim_threshold;
535 * encoding: set by user
538 int chroma_elim_threshold;
541 * strictly follow the std (MPEG4, ...)
542 * encoding: set by user
545 int strict_std_compliance;
548 * qscale offset between ip and b frames
549 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
550 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
551 * encoding: set by user.
554 float b_quant_offset;
557 * error resilience higher values will detect more errors but may missdetect
558 * some more or less valid parts as errors
560 * decoding: set by user
562 int error_resilience;
563 #define FF_ER_CAREFULL 1
564 #define FF_ER_COMPLIANT 2
565 #define FF_ER_AGGRESSIVE 3
566 #define FF_ER_VERY_AGGRESSIVE 4
569 * called at the beginning of each frame to get a buffer for it.
570 * if pic.reference is set then the frame will be read later by lavc
572 * decoding: set by lavc, user can override
574 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
577 * called to release buffers which where allocated with get_buffer.
578 * a released buffer can be reused in get_buffer()
579 * pic.data[*] must be set to NULL
581 * decoding: set by lavc, user can override
583 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
586 * is 1 if the decoded stream contains b frames, 0 otherwise
588 * decoding: set by lavc
592 int block_align; /* used by some WAV based audio codecs */
594 int parse_only; /* decoding only: if true, only parsing is done
595 (function avcodec_parse_frame()). The frame
596 data is returned. Only MPEG codecs support this now. */
599 * 0-> h263 quant 1-> mpeg quant
600 * encoding: set by user.
606 * pass1 encoding statistics output buffer
607 * encoding: set by lavc
610 char *stats_out; /* encoding statistics output buffer */
613 * pass2 encoding statistics input buffer.
614 * concatenated stuff from stats_out of pass1 should be placed here
615 * encoding: allocated/set/freed by user
621 * ratecontrol qmin qmax limiting method
622 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
623 * encoding: set by user.
632 * ratecontrol override, see RcOverride
633 * encoding: allocated/set/freed by user.
636 RcOverride *rc_override;
637 int rc_override_count;
640 * rate control equation
641 * encoding: set by user
648 * encoding: set by user.
655 * encoding: set by user.
661 * decoder bitstream buffer size
662 * encoding: set by user.
666 float rc_buffer_aggressivity;
669 * qscale factor between p and i frames
670 * encoding: set by user.
673 float i_quant_factor;
676 * qscale offset between p and i frames
677 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
678 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
679 * encoding: set by user.
682 float i_quant_offset;
685 * initial complexity for pass1 ratecontrol
686 * encoding: set by user.
689 float rc_initial_cplx;
692 * dct algorithm, see FF_DCT_* below
693 * encoding: set by user
697 #define FF_DCT_AUTO 0
698 #define FF_DCT_FASTINT 1
701 #define FF_DCT_MLIB 4
702 #define FF_DCT_ALTIVEC 5
705 * luminance masking (0-> disabled)
706 * encoding: set by user
712 * temporary complexity masking (0-> disabled)
713 * encoding: set by user
716 float temporal_cplx_masking;
719 * spatial complexity masking (0-> disabled)
720 * encoding: set by user
723 float spatial_cplx_masking;
726 * p block masking (0-> disabled)
727 * encoding: set by user
733 * darkness masking (0-> disabled)
734 * encoding: set by user
740 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
741 * this is used to workaround some encoder bugs
743 * decoding: set by user, will be converted to upper case by lavc during init
748 * idct algorithm, see FF_IDCT_* below
749 * encoding: set by user
750 * decoding: set by user
753 #define FF_IDCT_AUTO 0
754 #define FF_IDCT_INT 1
755 #define FF_IDCT_SIMPLE 2
756 #define FF_IDCT_SIMPLEMMX 3
757 #define FF_IDCT_LIBMPEG2MMX 4
758 #define FF_IDCT_PS2 5
759 #define FF_IDCT_MLIB 6
760 #define FF_IDCT_ARM 7
761 #define FF_IDCT_ALTIVEC 8
765 * encoding: set by lavc
766 * decoding: set by user (or 0)
770 * slice offsets in the frame in bytes
771 * encoding: set/allocated by lavc
772 * decoding: set/allocated by user (or NULL)
777 * error concealment flags
779 * decoding: set by user
781 int error_concealment;
782 #define FF_EC_GUESS_MVS 1
783 #define FF_EC_DEBLOCK 2
786 * dsp_mask could be used to disable unwanted
787 * CPU features (i.e. MMX, SSE. ...)
792 * bits per sample/pixel from the demuxer (needed for huffyuv)
793 * encoding: set by lavc
794 * decoding: set by user
799 * prediction method (needed for huffyuv)
800 * encoding: set by user
803 int prediction_method;
804 #define FF_PRED_LEFT 0
805 #define FF_PRED_PLANE 1
806 #define FF_PRED_MEDIAN 2
809 * aspect ratio. (0 if unknown)
810 * encoding: set by user.
811 * decoding: set by lavc.
816 * the picture in the bitstream
817 * encoding: set by lavc
818 * decoding: set by lavc
820 AVFrame *coded_frame;
824 * encoding: set by user.
825 * decoding: set by user.
828 #define FF_DEBUG_PICT_INFO 1
829 #define FF_DEBUG_RC 2
830 #define FF_DEBUG_BITSTREAM 4
831 #define FF_DEBUG_MB_TYPE 8
832 #define FF_DEBUG_QP 16
833 #define FF_DEBUG_MV 32
834 #define FF_DEBUG_VIS_MV 0x00000040
835 #define FF_DEBUG_SKIP 0x00000080
836 #define FF_DEBUG_STARTCODE 0x00000100
837 #define FF_DEBUG_PTS 0x00000200
841 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
847 * minimum MB quantizer
848 * encoding: set by user.
854 * maximum MB quantizer
855 * encoding: set by user.
861 * motion estimation compare function
862 * encoding: set by user.
867 * subpixel motion estimation compare function
868 * encoding: set by user.
873 * macroblock compare function (not supported yet)
874 * encoding: set by user.
880 #define FF_CMP_SATD 2
882 #define FF_CMP_PSNR 4
885 #define FF_CMP_ZERO 7
886 #define FF_CMP_CHROMA 256
889 * ME diamond size & shape
890 * encoding: set by user.
896 * amount of previous MV predictors (2a+1 x 2a+1 square)
897 * encoding: set by user.
900 int last_predictor_count;
903 * pre pass for motion estimation
904 * encoding: set by user.
910 * motion estimation pre pass compare function
911 * encoding: set by user.
917 * ME pre pass diamond size & shape
918 * encoding: set by user.
925 * encoding: set by user.
928 int me_subpel_quality;
931 * callback to negotiate the pixelFormat
932 * @param fmt is the list of formats which are supported by the codec,
933 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
934 * the first is allways the native one
935 * @return the choosen format
937 * decoding: set by user, if not set then the native format will always be choosen
939 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
942 typedef struct AVCodec {
947 int (*init)(AVCodecContext *);
948 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
949 int (*close)(AVCodecContext *);
950 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
951 UINT8 *buf, int buf_size);
953 struct AVCodec *next;
957 * four components are given, that's all.
958 * the last component is alpha
960 typedef struct AVPicture {
965 extern AVCodec ac3_encoder;
966 extern AVCodec mp2_encoder;
967 extern AVCodec mp3lame_encoder;
968 extern AVCodec oggvorbis_encoder;
969 extern AVCodec mpeg1video_encoder;
970 extern AVCodec h263_encoder;
971 extern AVCodec h263p_encoder;
972 extern AVCodec rv10_encoder;
973 extern AVCodec mjpeg_encoder;
974 extern AVCodec mpeg4_encoder;
975 extern AVCodec msmpeg4v1_encoder;
976 extern AVCodec msmpeg4v2_encoder;
977 extern AVCodec msmpeg4v3_encoder;
978 extern AVCodec wmv1_encoder;
979 extern AVCodec wmv2_encoder;
980 extern AVCodec huffyuv_encoder;
982 extern AVCodec h263_decoder;
983 extern AVCodec mpeg4_decoder;
984 extern AVCodec msmpeg4v1_decoder;
985 extern AVCodec msmpeg4v2_decoder;
986 extern AVCodec msmpeg4v3_decoder;
987 extern AVCodec wmv1_decoder;
988 extern AVCodec wmv2_decoder;
989 extern AVCodec mpeg_decoder;
990 extern AVCodec h263i_decoder;
991 extern AVCodec rv10_decoder;
992 extern AVCodec svq1_decoder;
993 extern AVCodec dvvideo_decoder;
994 extern AVCodec dvaudio_decoder;
995 extern AVCodec wmav1_decoder;
996 extern AVCodec wmav2_decoder;
997 extern AVCodec mjpeg_decoder;
998 extern AVCodec mjpegb_decoder;
999 extern AVCodec mp2_decoder;
1000 extern AVCodec mp3_decoder;
1001 extern AVCodec mace3_decoder;
1002 extern AVCodec mace6_decoder;
1003 extern AVCodec huffyuv_decoder;
1004 extern AVCodec oggvorbis_decoder;
1007 #define PCM_CODEC(id, name) \
1008 extern AVCodec name ## _decoder; \
1009 extern AVCodec name ## _encoder
1011 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1012 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1013 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1014 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1015 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1016 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1017 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1018 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1022 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1023 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1024 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1028 /* dummy raw video codec */
1029 extern AVCodec rawvideo_codec;
1031 /* the following codecs use external GPL libs */
1032 extern AVCodec ac3_decoder;
1036 struct ReSampleContext;
1038 typedef struct ReSampleContext ReSampleContext;
1040 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1041 int output_rate, int input_rate);
1042 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1043 void audio_resample_close(ReSampleContext *s);
1045 /* YUV420 format is assumed ! */
1047 struct ImgReSampleContext;
1049 typedef struct ImgReSampleContext ImgReSampleContext;
1051 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1052 int input_width, int input_height);
1054 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1055 int iwidth, int iheight,
1056 int topBand, int bottomBand,
1057 int leftBand, int rightBand);
1059 void img_resample(ImgReSampleContext *s,
1060 AVPicture *output, AVPicture *input);
1062 void img_resample_close(ImgReSampleContext *s);
1064 int avpicture_fill(AVPicture *picture, UINT8 *ptr,
1065 int pix_fmt, int width, int height);
1066 int avpicture_get_size(int pix_fmt, int width, int height);
1067 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1068 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1070 /* convert among pixel formats */
1071 int img_convert(AVPicture *dst, int dst_pix_fmt,
1072 AVPicture *src, int pix_fmt,
1073 int width, int height);
1075 /* deinterlace a picture */
1076 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1077 int pix_fmt, int width, int height);
1079 /* external high level API */
1081 extern AVCodec *first_avcodec;
1083 /* returns LIBAVCODEC_VERSION_INT constant */
1084 unsigned avcodec_version(void);
1085 /* returns LIBAVCODEC_BUILD constant */
1086 unsigned avcodec_build(void);
1087 void avcodec_init(void);
1089 void avcodec_set_bit_exact(void);
1091 void register_avcodec(AVCodec *format);
1092 AVCodec *avcodec_find_encoder(enum CodecID id);
1093 AVCodec *avcodec_find_encoder_by_name(const char *name);
1094 AVCodec *avcodec_find_decoder(enum CodecID id);
1095 AVCodec *avcodec_find_decoder_by_name(const char *name);
1096 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1098 void avcodec_get_context_defaults(AVCodecContext *s);
1099 AVCodecContext *avcodec_alloc_context(void);
1100 AVFrame *avcodec_alloc_frame(void);
1102 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1103 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1105 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1106 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1107 int *frame_size_ptr,
1108 UINT8 *buf, int buf_size);
1109 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1110 int *got_picture_ptr,
1111 UINT8 *buf, int buf_size);
1112 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1114 UINT8 *buf, int buf_size);
1115 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1116 const short *samples);
1117 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1118 const AVFrame *pict);
1120 int avcodec_close(AVCodecContext *avctx);
1122 void avcodec_register_all(void);
1124 void avcodec_flush_buffers(AVCodecContext *avctx);
1127 /** options' name with default value*/
1129 /** English text help */
1131 /** type of variable */
1133 #define FF_CONF_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
1134 #define FF_CONF_TYPE_DOUBLE 2 // double
1135 #define FF_CONF_TYPE_INT 3 // integer
1136 #define FF_CONF_TYPE_STRING 4 // string (finished with \0)
1137 #define FF_CONF_TYPE_MASK 0x1f // mask for types - upper bits are various flags
1138 #define FF_CONF_TYPE_EXPERT 0x20 // flag for expert option
1139 #define FF_CONF_TYPE_FLAG (FF_CONF_TYPE_BOOL | 0x40)
1140 #define FF_CONF_TYPE_RCOVERIDE (FF_CONF_TYPE_STRING | 0x80)
1141 /** where the parsed value should be stored */
1143 /** min value (min == max -> no limits) */
1145 /** maximum value for double/int */
1147 /** default boo [0,1]l/double/int value */
1150 * default string value (with optional semicolon delimited extra option-list
1151 * i.e. option1;option2;option3
1152 * defval might select other then first argument as default
1155 /** char* list of supported codecs (i.e. ",msmpeg4,h263," NULL - everything */
1156 const char* supported;
1159 void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
1162 * Interface for 0.5.0 version
1164 * do not even think about it's usage for this moment
1168 // compressed size used from given memory buffer
1170 /// I/P/B frame type
1176 * order can't be changed - once it was defined
1180 AVC_OPEN_BY_NAME = 0xACA000,
1181 AVC_OPEN_BY_CODEC_ID,
1186 // pin - struct { uint8_t* src, uint_t src_size }
1187 // pout - struct { AVPicture* img, consumed_bytes,
1189 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1190 // pout - uint_t used_from_dest_size
1193 // query/get video commands
1194 AVC_GET_VERSION = 0xACB000,
1198 AVC_GET_QUANT_TABLE,
1201 // query/get audio commands
1202 AVC_GET_FRAME_SIZE = 0xABC000,
1204 // maybe define some simple structure which
1205 // might be passed to the user - but they can't
1206 // contain any codec specific parts and these
1207 // calls are usualy necessary only few times
1209 // set video commands
1210 AVC_SET_WIDTH = 0xACD000,
1213 // set video encoding commands
1214 AVC_SET_FRAME_RATE = 0xACD800,
1218 // set audio commands
1219 AVC_SET_SAMPLE_RATE = 0xACE000,
1225 * \param handle allocated private structure by libavcodec
1226 * for initialization pass NULL - will be returned pout
1227 * user is supposed to know nothing about its structure
1228 * \param cmd type of operation to be performed
1229 * \param pint input parameter
1230 * \param pout output parameter
1232 * \returns command status - eventually for query command it might return
1233 * integer resulting value
1235 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1238 void *av_malloc(unsigned int size);
1239 void *av_mallocz(unsigned int size);
1240 void *av_realloc(void *ptr, unsigned int size);
1241 void av_free(void *ptr);
1242 char *av_strdup(const char *s);
1243 void __av_freep(void **ptr);
1244 #define av_freep(p) __av_freep((void **)(p))
1245 void *av_fast_realloc(void *ptr, int *size, int min_size);
1246 /* for static data only */
1247 /* call av_free_static to release all staticaly allocated tables */
1248 void av_free_static(void);
1249 void *__av_mallocz_static(void** location, unsigned int size);
1250 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1256 #endif /* AVCODEC_H */