17 #define LIBAVCODEC_VERSION_INT 0x000406
18 #define LIBAVCODEC_VERSION "0.4.6"
19 #define LIBAVCODEC_BUILD 4654
20 #define LIBAVCODEC_BUILD_STR "4654"
51 /* various pcm "codecs" */
61 /* various adpcm codecs */
62 CODEC_ID_ADPCM_IMA_QT,
63 CODEC_ID_ADPCM_IMA_WAV,
68 CODEC_TYPE_UNKNOWN = -1,
76 PIX_FMT_RGB24, /* 3 bytes, R is first */
77 PIX_FMT_BGR24, /* 3 bytes, B is first */
80 PIX_FMT_RGBA32, /* always stored in cpu endianness */
83 PIX_FMT_RGB565, /* always stored in cpu endianness */
84 PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
86 PIX_FMT_MONOWHITE, /* 0 is white */
87 PIX_FMT_MONOBLACK, /* 0 is black */
91 /* currently unused, may be used if 24/32 bits samples ever supported */
93 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
97 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
100 * Required number of zero bytes at the end of the input bitstream for decoding.
101 * to avoid overreading (and possibly segfaulting)
103 #define FF_INPUT_BUFFER_PADDING_SIZE 8
105 /* motion estimation type, EPZS by default */
115 typedef struct RcOverride{
118 int qscale; // if this is 0 then quality_factor will be used instead
119 float quality_factor;
122 /* only for ME compatiblity with old apps */
123 extern int motion_estimation_method;
125 /* ME algos sorted by quality */
126 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
127 ME_X1, ME_EPZS, ME_FULL };
130 #define FF_MAX_B_FRAMES 8
133 these flags can be passed in AVCodecContext.flags before initing
134 Note: note not everything is supported yet
137 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
138 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
139 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
140 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
141 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
142 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
143 /* parent program gurantees that the input for b-frame containing streams is not written to
144 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
145 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
146 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
147 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
148 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
149 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
150 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
151 #define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
152 #define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
153 of only at frame boundaries */
154 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
155 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
156 #define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
157 #define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
158 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
159 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
161 /* codec capabilities */
163 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
164 #define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
165 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
167 #define CODEC_CAP_PARSE_ONLY 0x0004
168 #define CODEC_CAP_TRUNCATED 0x0008
170 #define FRAME_RATE_BASE 10000
172 #define FF_COMMON_FRAME \
176 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
177 * this isnt used by lavc unless the default get/release_buffer() is used\
183 * 1 -> keyframe, 0-> not\
184 * encoding: set by lavc\
185 * decoding: set by lavc\
190 * picture type of the frame, see ?_TYPE below\
191 * encoding: set by lavc for coded_picture (and set by user for input)\
192 * decoding: set by lavc\
197 * presentation timestamp in micro seconds (time when frame should be shown to user)\
198 * if 0 then the frame_rate will be used as reference\
199 * encoding: MUST be set by user\
200 * decoding: set by lavc\
205 * picture number in bitstream order.\
207 * decoding: set by lavc\
209 int coded_picture_number;\
212 * decoding: set by lavc\
213 * picture number in display order.\
215 int display_picture_number;\
218 * quality (between 1 (good) and 31 (bad)) \
219 * encoding: set by lavc for coded_picture (and set by user for input)\
220 * decoding: set by lavc\
225 * buffer age (1->was last buffer and dint change, 2->..., ...).\
226 * set to something large if the buffer has not been used yet \
228 * decoding: MUST be set by get_buffer()\
233 * is this picture used as reference\
235 * decoding: set by lavc (before get_buffer() call))\
242 * decoding: set by lavc\
244 int8_t *qscale_table;\
248 * decoding: set by lavc\
253 * mbskip_table[mb]>=1 if MB didnt change\
254 * stride= mb_width = (width+15)>>4\
256 * decoding: set by lavc\
258 uint8_t *mbskip_table;\
261 * for some private data of the user\
263 * decoding: set by user\
269 * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
275 * type of the buffer (to keep track of who has to dealloc data[*])\
276 * encoding: set by the one who allocs it\
277 * decoding: set by the one who allocs it\
278 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
282 #define FF_BUFFER_TYPE_INTERNAL 1
283 #define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
284 #define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
287 #define FF_I_TYPE 1 // Intra
288 #define FF_P_TYPE 2 // Predicted
289 #define FF_B_TYPE 3 // Bi-dir predicted
290 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
292 typedef struct AVFrame {
296 typedef struct AVCodecContext {
298 * the average bitrate
299 * encoding: set by user. unused for constant quantizer encoding
300 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
305 * number of bits the bitstream is allowed to diverge from the reference
306 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
307 * encoding: set by user. unused for constant quantizer encoding
310 int bit_rate_tolerance;
314 * encoding: set by user.
315 * decoding: set by user.
320 * some codecs needs additionnal format info. It is stored here
321 * encoding: set by user.
322 * decoding: set by lavc. (FIXME is this ok?)
327 * motion estimation algorithm used for video coding
328 * encoding: MUST be set by user.
334 * some codecs need / can use extra-data like huffman tables
335 * mjpeg: huffman tables
336 * rv10: additional flags
337 * mpeg4: global headers (they can be in the bitstream or here)
338 * encoding: set/allocated/freed by lavc.
339 * decoding: set/allocated/freed by user.
346 * frames per sec multiplied by FRAME_RATE_BASE
347 * for variable fps this is the precission, so if the timestamps
348 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
349 * encoding: MUST be set by user
350 * decoding: set by lavc. 0 or the frame_rate if available
355 * encoding: MUST be set by user.
356 * decoding: set by user, some codecs might override / change it during playback
360 #define FF_ASPECT_SQUARE 1
361 #define FF_ASPECT_4_3_625 2
362 #define FF_ASPECT_4_3_525 3
363 #define FF_ASPECT_16_9_625 4
364 #define FF_ASPECT_16_9_525 5
365 #define FF_ASPECT_EXTENDED 15
368 * the number of pictures in a group of pitures, or 0 for intra_only
369 * encoding: set by user.
375 * pixel format, see PIX_FMT_xxx
377 * decoding: set by lavc.
379 enum PixelFormat pix_fmt;
381 int repeat_pict; /* when decoding, this signal how much the picture */
382 /* must be delayed. */
383 /* extra_delay = (repeat_pict / 2) * (1/fps) */
386 * if non NULL, 'draw_horiz_band' is called by the libavcodec
387 * decoder to draw an horizontal band. It improve cache usage. Not
388 * all codecs can do that. You must check the codec capabilities
391 * decoding: set by user.
393 void (*draw_horiz_band)(struct AVCodecContext *s,
394 UINT8 **src_ptr, int linesize,
395 int y, int width, int height);
398 int sample_rate; /* samples per sec */
400 int sample_fmt; /* sample format, currenly unused */
402 /* the following data should not be initialized */
403 int frame_size; /* in samples, initialized when calling 'init' */
404 int frame_number; /* audio or video frame number */
405 int real_pict_num; /* returns the real picture number of
406 previous encoded frame */
409 * number of frames the decoded output will be delayed relative to
411 * encoding: set by lavc.
416 /* encoding parameters */
417 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
418 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
422 * encoding: set by user.
429 * encoding: set by user.
435 * maximum quantizer difference etween frames
436 * encoding: set by user.
442 * maximum number of b frames between non b frames
443 * note: the output will be delayed by max_b_frames+1 relative to the input
444 * encoding: set by user.
450 * qscale factor between ip and b frames
451 * encoding: set by user.
454 float b_quant_factor;
456 /** obsolete FIXME remove */
458 int b_frame_strategy;
462 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
466 struct AVCodec *codec;
470 /* The following data is for RTP friendly coding */
471 /* By now only H.263/H.263+/MPEG4 coder honours this */
472 int rtp_mode; /* 1 for activate RTP friendly-mode */
473 /* highers numbers represent more error-prone */
474 /* enviroments, by now just "1" exist */
476 int rtp_payload_size; /* The size of the RTP payload, the coder will */
477 /* do it's best to deliver a chunk with size */
478 /* below rtp_payload_size, the chunk will start */
479 /* with a start code on some codecs like H.263 */
480 /* This doesn't take account of any particular */
481 /* headers inside the transmited RTP payload */
484 /* The RTP callcack: This function is called */
485 /* every time the encoder as a packet to send */
486 /* Depends on the encoder if the data starts */
487 /* with a Start Code (it should) H.263 does */
488 void (*rtp_callback)(void *data, int size, int packet_number);
490 /* statistics, used for 2-pass encoding */
501 * number of bits used for the previously encoded frame
502 * encoding: set by lavc
503 * decoding: - for audio - bits_per_sample
508 * private data of the user, can be used to carry app specific stuff
509 * encoding: set by user
510 * decoding: set by user
515 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
516 enum CodecID codec_id; /* see CODEC_ID_xxx */
517 unsigned int codec_tag; /* codec tag, only used if unknown codec */
520 * workaround bugs in encoders which sometimes cannot be detected automatically
522 * decoding: set by user
525 #define FF_BUG_AUTODETECT 1 //autodetection
526 #define FF_BUG_OLD_MSMPEG4 2
527 #define FF_BUG_XVID_ILACE 4
528 #define FF_BUG_UMP4 8
529 #define FF_BUG_NO_PADDING 16
530 #define FF_BUG_AC_VLC 32
531 #define FF_BUG_QPEL_CHROMA 64
532 #define FF_BUG_STD_QPEL 128
533 #define FF_BUG_QPEL_CHROMA2 256
534 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
537 * encoding: set by user
540 int luma_elim_threshold;
543 * encoding: set by user
546 int chroma_elim_threshold;
549 * strictly follow the std (MPEG4, ...)
550 * encoding: set by user
553 int strict_std_compliance;
556 * qscale offset between ip and b frames
557 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
558 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
559 * encoding: set by user.
562 float b_quant_offset;
565 * error resilience higher values will detect more errors but may missdetect
566 * some more or less valid parts as errors
568 * decoding: set by user
570 int error_resilience;
571 #define FF_ER_CAREFULL 1
572 #define FF_ER_COMPLIANT 2
573 #define FF_ER_AGGRESSIVE 3
574 #define FF_ER_VERY_AGGRESSIVE 4
577 * called at the beginning of each frame to get a buffer for it.
578 * if pic.reference is set then the frame will be read later by lavc
580 * decoding: set by lavc, user can override
582 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
585 * called to release buffers which where allocated with get_buffer.
586 * a released buffer can be reused in get_buffer()
587 * pic.data[*] must be set to NULL
589 * decoding: set by lavc, user can override
591 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
594 * is 1 if the decoded stream contains b frames, 0 otherwise
596 * decoding: set by lavc
600 int block_align; /* used by some WAV based audio codecs */
602 int parse_only; /* decoding only: if true, only parsing is done
603 (function avcodec_parse_frame()). The frame
604 data is returned. Only MPEG codecs support this now. */
607 * 0-> h263 quant 1-> mpeg quant
608 * encoding: set by user.
614 * pass1 encoding statistics output buffer
615 * encoding: set by lavc
618 char *stats_out; /* encoding statistics output buffer */
621 * pass2 encoding statistics input buffer.
622 * concatenated stuff from stats_out of pass1 should be placed here
623 * encoding: allocated/set/freed by user
629 * ratecontrol qmin qmax limiting method
630 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
631 * encoding: set by user.
640 * ratecontrol override, see RcOverride
641 * encoding: allocated/set/freed by user.
644 RcOverride *rc_override;
645 int rc_override_count;
648 * rate control equation
649 * encoding: set by user
656 * encoding: set by user.
663 * encoding: set by user.
669 * decoder bitstream buffer size
670 * encoding: set by user.
674 float rc_buffer_aggressivity;
677 * qscale factor between p and i frames
678 * encoding: set by user.
681 float i_quant_factor;
684 * qscale offset between p and i frames
685 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
686 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
687 * encoding: set by user.
690 float i_quant_offset;
693 * initial complexity for pass1 ratecontrol
694 * encoding: set by user.
697 float rc_initial_cplx;
700 * dct algorithm, see FF_DCT_* below
701 * encoding: set by user
705 #define FF_DCT_AUTO 0
706 #define FF_DCT_FASTINT 1
709 #define FF_DCT_MLIB 4
710 #define FF_DCT_ALTIVEC 5
713 * luminance masking (0-> disabled)
714 * encoding: set by user
720 * temporary complexity masking (0-> disabled)
721 * encoding: set by user
724 float temporal_cplx_masking;
727 * spatial complexity masking (0-> disabled)
728 * encoding: set by user
731 float spatial_cplx_masking;
734 * p block masking (0-> disabled)
735 * encoding: set by user
741 * darkness masking (0-> disabled)
742 * encoding: set by user
748 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
749 * this is used to workaround some encoder bugs
751 * decoding: set by user, will be converted to upper case by lavc during init
756 * idct algorithm, see FF_IDCT_* below
757 * encoding: set by user
758 * decoding: set by user
761 #define FF_IDCT_AUTO 0
762 #define FF_IDCT_INT 1
763 #define FF_IDCT_SIMPLE 2
764 #define FF_IDCT_SIMPLEMMX 3
765 #define FF_IDCT_LIBMPEG2MMX 4
766 #define FF_IDCT_PS2 5
767 #define FF_IDCT_MLIB 6
768 #define FF_IDCT_ARM 7
769 #define FF_IDCT_ALTIVEC 8
773 * encoding: set by lavc
774 * decoding: set by user (or 0)
778 * slice offsets in the frame in bytes
779 * encoding: set/allocated by lavc
780 * decoding: set/allocated by user (or NULL)
785 * error concealment flags
787 * decoding: set by user
789 int error_concealment;
790 #define FF_EC_GUESS_MVS 1
791 #define FF_EC_DEBLOCK 2
794 * dsp_mask could be used to disable unwanted
795 * CPU features (i.e. MMX, SSE. ...)
800 * bits per sample/pixel from the demuxer (needed for huffyuv)
801 * encoding: set by lavc
802 * decoding: set by user
807 * prediction method (needed for huffyuv)
808 * encoding: set by user
811 int prediction_method;
812 #define FF_PRED_LEFT 0
813 #define FF_PRED_PLANE 1
814 #define FF_PRED_MEDIAN 2
817 * aspect ratio. (0 if unknown)
818 * encoding: set by user.
819 * decoding: set by lavc.
824 * the picture in the bitstream
825 * encoding: set by lavc
826 * decoding: set by lavc
828 AVFrame *coded_frame;
832 * encoding: set by user.
833 * decoding: set by user.
836 #define FF_DEBUG_PICT_INFO 1
837 #define FF_DEBUG_RC 2
838 #define FF_DEBUG_BITSTREAM 4
839 #define FF_DEBUG_MB_TYPE 8
840 #define FF_DEBUG_QP 16
841 #define FF_DEBUG_MV 32
842 #define FF_DEBUG_VIS_MV 0x00000040
843 #define FF_DEBUG_SKIP 0x00000080
844 #define FF_DEBUG_STARTCODE 0x00000100
845 #define FF_DEBUG_PTS 0x00000200
849 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
855 * minimum MB quantizer
856 * encoding: set by user.
862 * maximum MB quantizer
863 * encoding: set by user.
869 * motion estimation compare function
870 * encoding: set by user.
875 * subpixel motion estimation compare function
876 * encoding: set by user.
881 * macroblock compare function (not supported yet)
882 * encoding: set by user.
888 #define FF_CMP_SATD 2
890 #define FF_CMP_PSNR 4
893 #define FF_CMP_ZERO 7
894 #define FF_CMP_CHROMA 256
897 * ME diamond size & shape
898 * encoding: set by user.
904 * amount of previous MV predictors (2a+1 x 2a+1 square)
905 * encoding: set by user.
908 int last_predictor_count;
911 * pre pass for motion estimation
912 * encoding: set by user.
918 * motion estimation pre pass compare function
919 * encoding: set by user.
925 * ME pre pass diamond size & shape
926 * encoding: set by user.
933 * encoding: set by user.
936 int me_subpel_quality;
939 * callback to negotiate the pixelFormat
940 * @param fmt is the list of formats which are supported by the codec,
941 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
942 * the first is allways the native one
943 * @return the choosen format
945 * decoding: set by user, if not set then the native format will always be choosen
947 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
950 typedef struct AVCodec {
955 int (*init)(AVCodecContext *);
956 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
957 int (*close)(AVCodecContext *);
958 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
959 UINT8 *buf, int buf_size);
961 struct AVCodec *next;
965 * four components are given, that's all.
966 * the last component is alpha
968 typedef struct AVPicture {
973 extern AVCodec ac3_encoder;
974 extern AVCodec mp2_encoder;
975 extern AVCodec mp3lame_encoder;
976 extern AVCodec oggvorbis_encoder;
977 extern AVCodec mpeg1video_encoder;
978 extern AVCodec h263_encoder;
979 extern AVCodec h263p_encoder;
980 extern AVCodec rv10_encoder;
981 extern AVCodec mjpeg_encoder;
982 extern AVCodec mpeg4_encoder;
983 extern AVCodec msmpeg4v1_encoder;
984 extern AVCodec msmpeg4v2_encoder;
985 extern AVCodec msmpeg4v3_encoder;
986 extern AVCodec wmv1_encoder;
987 extern AVCodec wmv2_encoder;
988 extern AVCodec huffyuv_encoder;
990 extern AVCodec h263_decoder;
991 extern AVCodec mpeg4_decoder;
992 extern AVCodec msmpeg4v1_decoder;
993 extern AVCodec msmpeg4v2_decoder;
994 extern AVCodec msmpeg4v3_decoder;
995 extern AVCodec wmv1_decoder;
996 extern AVCodec wmv2_decoder;
997 extern AVCodec mpeg_decoder;
998 extern AVCodec h263i_decoder;
999 extern AVCodec rv10_decoder;
1000 extern AVCodec svq1_decoder;
1001 extern AVCodec dvvideo_decoder;
1002 extern AVCodec dvaudio_decoder;
1003 extern AVCodec wmav1_decoder;
1004 extern AVCodec wmav2_decoder;
1005 extern AVCodec mjpeg_decoder;
1006 extern AVCodec mjpegb_decoder;
1007 extern AVCodec mp2_decoder;
1008 extern AVCodec mp3_decoder;
1009 extern AVCodec mace3_decoder;
1010 extern AVCodec mace6_decoder;
1011 extern AVCodec huffyuv_decoder;
1012 extern AVCodec oggvorbis_decoder;
1015 #define PCM_CODEC(id, name) \
1016 extern AVCodec name ## _decoder; \
1017 extern AVCodec name ## _encoder
1019 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1020 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1021 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1022 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1023 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1024 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1025 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1026 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1030 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1031 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1032 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1036 /* dummy raw video codec */
1037 extern AVCodec rawvideo_codec;
1039 /* the following codecs use external GPL libs */
1040 extern AVCodec ac3_decoder;
1044 struct ReSampleContext;
1046 typedef struct ReSampleContext ReSampleContext;
1048 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1049 int output_rate, int input_rate);
1050 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1051 void audio_resample_close(ReSampleContext *s);
1053 /* YUV420 format is assumed ! */
1055 struct ImgReSampleContext;
1057 typedef struct ImgReSampleContext ImgReSampleContext;
1059 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1060 int input_width, int input_height);
1062 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1063 int iwidth, int iheight,
1064 int topBand, int bottomBand,
1065 int leftBand, int rightBand);
1067 void img_resample(ImgReSampleContext *s,
1068 AVPicture *output, AVPicture *input);
1070 void img_resample_close(ImgReSampleContext *s);
1072 int avpicture_fill(AVPicture *picture, UINT8 *ptr,
1073 int pix_fmt, int width, int height);
1074 int avpicture_get_size(int pix_fmt, int width, int height);
1075 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1076 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1078 /* convert among pixel formats */
1079 int img_convert(AVPicture *dst, int dst_pix_fmt,
1080 AVPicture *src, int pix_fmt,
1081 int width, int height);
1083 /* deinterlace a picture */
1084 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1085 int pix_fmt, int width, int height);
1087 /* external high level API */
1089 extern AVCodec *first_avcodec;
1091 /* returns LIBAVCODEC_VERSION_INT constant */
1092 unsigned avcodec_version(void);
1093 /* returns LIBAVCODEC_BUILD constant */
1094 unsigned avcodec_build(void);
1095 void avcodec_init(void);
1097 void avcodec_set_bit_exact(void);
1099 void register_avcodec(AVCodec *format);
1100 AVCodec *avcodec_find_encoder(enum CodecID id);
1101 AVCodec *avcodec_find_encoder_by_name(const char *name);
1102 AVCodec *avcodec_find_decoder(enum CodecID id);
1103 AVCodec *avcodec_find_decoder_by_name(const char *name);
1104 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1106 void avcodec_get_context_defaults(AVCodecContext *s);
1107 AVCodecContext *avcodec_alloc_context(void);
1108 AVFrame *avcodec_alloc_frame(void);
1110 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1111 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1113 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1114 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1115 int *frame_size_ptr,
1116 UINT8 *buf, int buf_size);
1117 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1118 int *got_picture_ptr,
1119 UINT8 *buf, int buf_size);
1120 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1122 UINT8 *buf, int buf_size);
1123 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1124 const short *samples);
1125 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1126 const AVFrame *pict);
1128 int avcodec_close(AVCodecContext *avctx);
1130 void avcodec_register_all(void);
1132 void avcodec_flush_buffers(AVCodecContext *avctx);
1135 /** options' name with default value*/
1137 /** English text help */
1139 /** type of variable */
1141 #define FF_CONF_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
1142 #define FF_CONF_TYPE_DOUBLE 2 // double
1143 #define FF_CONF_TYPE_INT 3 // integer
1144 #define FF_CONF_TYPE_STRING 4 // string (finished with \0)
1145 #define FF_CONF_TYPE_MASK 0x1f // mask for types - upper bits are various flags
1146 #define FF_CONF_TYPE_EXPERT 0x20 // flag for expert option
1147 #define FF_CONF_TYPE_FLAG (FF_CONF_TYPE_BOOL | 0x40)
1148 #define FF_CONF_TYPE_RCOVERIDE (FF_CONF_TYPE_STRING | 0x80)
1149 /** where the parsed value should be stored */
1151 /** min value (min == max -> no limits) */
1153 /** maximum value for double/int */
1155 /** default boo [0,1]l/double/int value */
1158 * default string value (with optional semicolon delimited extra option-list
1159 * i.e. option1;option2;option3
1160 * defval might select other then first argument as default
1163 /** char* list of supported codecs (i.e. ",msmpeg4,h263," NULL - everything */
1164 const char* supported;
1167 void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
1170 * Interface for 0.5.0 version
1172 * do not even think about it's usage for this moment
1176 // compressed size used from given memory buffer
1178 /// I/P/B frame type
1184 * order can't be changed - once it was defined
1188 AVC_OPEN_BY_NAME = 0xACA000,
1189 AVC_OPEN_BY_CODEC_ID,
1194 // pin - struct { uint8_t* src, uint_t src_size }
1195 // pout - struct { AVPicture* img, consumed_bytes,
1197 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1198 // pout - uint_t used_from_dest_size
1201 // query/get video commands
1202 AVC_GET_VERSION = 0xACB000,
1206 AVC_GET_QUANT_TABLE,
1209 // query/get audio commands
1210 AVC_GET_FRAME_SIZE = 0xABC000,
1212 // maybe define some simple structure which
1213 // might be passed to the user - but they can't
1214 // contain any codec specific parts and these
1215 // calls are usualy necessary only few times
1217 // set video commands
1218 AVC_SET_WIDTH = 0xACD000,
1221 // set video encoding commands
1222 AVC_SET_FRAME_RATE = 0xACD800,
1226 // set audio commands
1227 AVC_SET_SAMPLE_RATE = 0xACE000,
1233 * \param handle allocated private structure by libavcodec
1234 * for initialization pass NULL - will be returned pout
1235 * user is supposed to know nothing about its structure
1236 * \param cmd type of operation to be performed
1237 * \param pint input parameter
1238 * \param pout output parameter
1240 * \returns command status - eventually for query command it might return
1241 * integer resulting value
1243 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1246 void *av_malloc(unsigned int size);
1247 void *av_mallocz(unsigned int size);
1248 void *av_realloc(void *ptr, unsigned int size);
1249 void av_free(void *ptr);
1250 char *av_strdup(const char *s);
1251 void __av_freep(void **ptr);
1252 #define av_freep(p) __av_freep((void **)(p))
1253 void *av_fast_realloc(void *ptr, int *size, int min_size);
1254 /* for static data only */
1255 /* call av_free_static to release all staticaly allocated tables */
1256 void av_free_static(void);
1257 void *__av_mallocz_static(void** location, unsigned int size);
1258 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1264 #endif /* AVCODEC_H */