6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4654
9 #define LIBAVCODEC_BUILD_STR "4654"
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,
65 PIX_FMT_RGB24, /* 3 bytes, R is first */
66 PIX_FMT_BGR24, /* 3 bytes, B is first */
69 PIX_FMT_RGBA32, /* always stored in cpu endianness */
72 PIX_FMT_RGB565, /* always stored in cpu endianness */
73 PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
75 PIX_FMT_MONOWHITE, /* 0 is white */
76 PIX_FMT_MONOBLACK, /* 0 is black */
80 /* currently unused, may be used if 24/32 bits samples ever supported */
82 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
86 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
89 * Required number of zero bytes at the end of the input bitstream for decoding.
90 * to avoid overreading (and possibly segfaulting)
92 #define FF_INPUT_BUFFER_PADDING_SIZE 8
94 /* motion estimation type, EPZS by default */
104 typedef struct RcOverride{
107 int qscale; // if this is 0 then quality_factor will be used instead
108 float quality_factor;
111 /* only for ME compatiblity with old apps */
112 extern int motion_estimation_method;
114 /* ME algos sorted by quality */
115 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
116 ME_X1, ME_EPZS, ME_FULL };
119 #define FF_MAX_B_FRAMES 8
122 these flags can be passed in AVCodecContext.flags before initing
123 Note: note not everything is supported yet
126 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
127 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
128 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
129 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
130 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
131 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
132 /* parent program gurantees that the input for b-frame containing streams is not written to
133 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
134 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
135 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
136 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
137 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
138 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
139 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
140 #define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
141 #define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
142 of only at frame boundaries */
143 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
144 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
145 #define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
146 #define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
147 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
148 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
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_STD_QPEL 128
522 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
525 * encoding: set by user
528 int luma_elim_threshold;
531 * encoding: set by user
534 int chroma_elim_threshold;
537 * strictly follow the std (MPEG4, ...)
538 * encoding: set by user
541 int strict_std_compliance;
544 * qscale offset between ip and b frames
545 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
546 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
547 * encoding: set by user.
550 float b_quant_offset;
553 * error resilience higher values will detect more errors but may missdetect
554 * some more or less valid parts as errors
556 * decoding: set by user
558 int error_resilience;
559 #define FF_ER_CAREFULL 1
560 #define FF_ER_COMPLIANT 2
561 #define FF_ER_AGGRESSIVE 3
562 #define FF_ER_VERY_AGGRESSIVE 4
565 * called at the beginning of each frame to get a buffer for it.
566 * if pic.reference is set then the frame will be read later by lavc
568 * decoding: set by lavc, user can override
570 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
573 * called to release buffers which where allocated with get_buffer.
574 * a released buffer can be reused in get_buffer()
575 * pic.data[*] must be set to NULL
577 * decoding: set by lavc, user can override
579 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
582 * is 1 if the decoded stream contains b frames, 0 otherwise
584 * decoding: set by lavc
588 int block_align; /* used by some WAV based audio codecs */
590 int parse_only; /* decoding only: if true, only parsing is done
591 (function avcodec_parse_frame()). The frame
592 data is returned. Only MPEG codecs support this now. */
595 * 0-> h263 quant 1-> mpeg quant
596 * encoding: set by user.
602 * pass1 encoding statistics output buffer
603 * encoding: set by lavc
606 char *stats_out; /* encoding statistics output buffer */
609 * pass2 encoding statistics input buffer.
610 * concatenated stuff from stats_out of pass1 should be placed here
611 * encoding: allocated/set/freed by user
617 * ratecontrol qmin qmax limiting method
618 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
619 * encoding: set by user.
628 * ratecontrol override, see RcOverride
629 * encoding: allocated/set/freed by user.
632 RcOverride *rc_override;
633 int rc_override_count;
636 * rate control equation
637 * encoding: set by user
644 * encoding: set by user.
651 * encoding: set by user.
657 * decoder bitstream buffer size
658 * encoding: set by user.
662 float rc_buffer_aggressivity;
665 * qscale factor between p and i frames
666 * encoding: set by user.
669 float i_quant_factor;
672 * qscale offset between p and i frames
673 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
674 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
675 * encoding: set by user.
678 float i_quant_offset;
681 * initial complexity for pass1 ratecontrol
682 * encoding: set by user.
685 float rc_initial_cplx;
688 * dct algorithm, see FF_DCT_* below
689 * encoding: set by user
693 #define FF_DCT_AUTO 0
694 #define FF_DCT_FASTINT 1
697 #define FF_DCT_MLIB 4
698 #define FF_DCT_ALTIVEC 5
701 * luminance masking (0-> disabled)
702 * encoding: set by user
708 * temporary complexity masking (0-> disabled)
709 * encoding: set by user
712 float temporal_cplx_masking;
715 * spatial complexity masking (0-> disabled)
716 * encoding: set by user
719 float spatial_cplx_masking;
722 * p block masking (0-> disabled)
723 * encoding: set by user
729 * darkness masking (0-> disabled)
730 * encoding: set by user
736 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
737 * this is used to workaround some encoder bugs
739 * decoding: set by user, will be converted to upper case by lavc during init
744 * idct algorithm, see FF_IDCT_* below
745 * encoding: set by user
746 * decoding: set by user
749 #define FF_IDCT_AUTO 0
750 #define FF_IDCT_INT 1
751 #define FF_IDCT_SIMPLE 2
752 #define FF_IDCT_SIMPLEMMX 3
753 #define FF_IDCT_LIBMPEG2MMX 4
754 #define FF_IDCT_PS2 5
755 #define FF_IDCT_MLIB 6
756 #define FF_IDCT_ARM 7
757 #define FF_IDCT_ALTIVEC 8
761 * encoding: set by lavc
762 * decoding: set by user (or 0)
766 * slice offsets in the frame in bytes
767 * encoding: set/allocated by lavc
768 * decoding: set/allocated by user (or NULL)
773 * error concealment flags
775 * decoding: set by user
777 int error_concealment;
778 #define FF_EC_GUESS_MVS 1
779 #define FF_EC_DEBLOCK 2
782 * dsp_mask could be used to disable unwanted
783 * CPU features (i.e. MMX, SSE. ...)
788 * bits per sample/pixel from the demuxer (needed for huffyuv)
789 * encoding: set by lavc
790 * decoding: set by user
795 * prediction method (needed for huffyuv)
796 * encoding: set by user
799 int prediction_method;
800 #define FF_PRED_LEFT 0
801 #define FF_PRED_PLANE 1
802 #define FF_PRED_MEDIAN 2
805 * aspect ratio. (0 if unknown)
806 * encoding: set by user.
807 * decoding: set by lavc.
812 * the picture in the bitstream
813 * encoding: set by lavc
814 * decoding: set by lavc
816 AVFrame *coded_frame;
820 * encoding: set by user.
821 * decoding: set by user.
824 #define FF_DEBUG_PICT_INFO 1
825 #define FF_DEBUG_RC 2
826 #define FF_DEBUG_BITSTREAM 4
827 #define FF_DEBUG_MB_TYPE 8
828 #define FF_DEBUG_QP 16
829 #define FF_DEBUG_MV 32
830 #define FF_DEBUG_VIS_MV 0x00000040
831 #define FF_DEBUG_SKIP 0x00000080
832 #define FF_DEBUG_STARTCODE 0x00000100
833 #define FF_DEBUG_PTS 0x00000200
837 * encoding: set by lavc if flags&CODEC_FLAG_PSNR
843 * minimum MB quantizer
844 * encoding: set by user.
850 * maximum MB quantizer
851 * encoding: set by user.
857 * motion estimation compare function
858 * encoding: set by user.
863 * subpixel motion estimation compare function
864 * encoding: set by user.
869 * macroblock compare function (not supported yet)
870 * encoding: set by user.
876 #define FF_CMP_SATD 2
878 #define FF_CMP_PSNR 4
881 #define FF_CMP_ZERO 7
882 #define FF_CMP_CHROMA 256
885 * ME diamond size & shape
886 * encoding: set by user.
892 * amount of previous MV predictors (2a+1 x 2a+1 square)
893 * encoding: set by user.
896 int last_predictor_count;
899 * pre pass for motion estimation
900 * encoding: set by user.
906 * motion estimation pre pass compare function
907 * encoding: set by user.
913 * ME pre pass diamond size & shape
914 * encoding: set by user.
921 * encoding: set by user.
924 int me_subpel_quality;
928 typedef struct AVCodec {
933 int (*init)(AVCodecContext *);
934 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
935 int (*close)(AVCodecContext *);
936 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
937 UINT8 *buf, int buf_size);
939 struct AVCodec *next;
943 * four components are given, that's all.
944 * the last component is alpha
946 typedef struct AVPicture {
951 extern AVCodec ac3_encoder;
952 extern AVCodec mp2_encoder;
953 extern AVCodec mp3lame_encoder;
954 extern AVCodec oggvorbis_encoder;
955 extern AVCodec mpeg1video_encoder;
956 extern AVCodec h263_encoder;
957 extern AVCodec h263p_encoder;
958 extern AVCodec rv10_encoder;
959 extern AVCodec mjpeg_encoder;
960 extern AVCodec mpeg4_encoder;
961 extern AVCodec msmpeg4v1_encoder;
962 extern AVCodec msmpeg4v2_encoder;
963 extern AVCodec msmpeg4v3_encoder;
964 extern AVCodec wmv1_encoder;
965 extern AVCodec wmv2_encoder;
966 extern AVCodec huffyuv_encoder;
968 extern AVCodec h263_decoder;
969 extern AVCodec mpeg4_decoder;
970 extern AVCodec msmpeg4v1_decoder;
971 extern AVCodec msmpeg4v2_decoder;
972 extern AVCodec msmpeg4v3_decoder;
973 extern AVCodec wmv1_decoder;
974 extern AVCodec wmv2_decoder;
975 extern AVCodec mpeg_decoder;
976 extern AVCodec h263i_decoder;
977 extern AVCodec rv10_decoder;
978 extern AVCodec svq1_decoder;
979 extern AVCodec dvvideo_decoder;
980 extern AVCodec dvaudio_decoder;
981 extern AVCodec wmav1_decoder;
982 extern AVCodec wmav2_decoder;
983 extern AVCodec mjpeg_decoder;
984 extern AVCodec mjpegb_decoder;
985 extern AVCodec mp2_decoder;
986 extern AVCodec mp3_decoder;
987 extern AVCodec mace3_decoder;
988 extern AVCodec mace6_decoder;
989 extern AVCodec huffyuv_decoder;
990 extern AVCodec oggvorbis_decoder;
993 #define PCM_CODEC(id, name) \
994 extern AVCodec name ## _decoder; \
995 extern AVCodec name ## _encoder
997 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
998 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
999 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1000 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1001 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1002 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1003 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1004 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1008 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1009 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1010 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1014 /* dummy raw video codec */
1015 extern AVCodec rawvideo_codec;
1017 /* the following codecs use external GPL libs */
1018 extern AVCodec ac3_decoder;
1022 struct ReSampleContext;
1024 typedef struct ReSampleContext ReSampleContext;
1026 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1027 int output_rate, int input_rate);
1028 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1029 void audio_resample_close(ReSampleContext *s);
1031 /* YUV420 format is assumed ! */
1033 struct ImgReSampleContext;
1035 typedef struct ImgReSampleContext ImgReSampleContext;
1037 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1038 int input_width, int input_height);
1040 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1041 int iwidth, int iheight,
1042 int topBand, int bottomBand,
1043 int leftBand, int rightBand);
1045 void img_resample(ImgReSampleContext *s,
1046 AVPicture *output, AVPicture *input);
1048 void img_resample_close(ImgReSampleContext *s);
1050 int avpicture_fill(AVPicture *picture, UINT8 *ptr,
1051 int pix_fmt, int width, int height);
1052 int avpicture_get_size(int pix_fmt, int width, int height);
1053 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1054 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1056 /* convert among pixel formats */
1057 int img_convert(AVPicture *dst, int dst_pix_fmt,
1058 AVPicture *src, int pix_fmt,
1059 int width, int height);
1061 /* deinterlace a picture */
1062 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1063 int pix_fmt, int width, int height);
1065 /* external high level API */
1067 extern AVCodec *first_avcodec;
1069 /* returns LIBAVCODEC_VERSION_INT constant */
1070 unsigned avcodec_version(void);
1071 /* returns LIBAVCODEC_BUILD constant */
1072 unsigned avcodec_build(void);
1073 void avcodec_init(void);
1075 void avcodec_set_bit_exact(void);
1077 void register_avcodec(AVCodec *format);
1078 AVCodec *avcodec_find_encoder(enum CodecID id);
1079 AVCodec *avcodec_find_encoder_by_name(const char *name);
1080 AVCodec *avcodec_find_decoder(enum CodecID id);
1081 AVCodec *avcodec_find_decoder_by_name(const char *name);
1082 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1084 void avcodec_get_context_defaults(AVCodecContext *s);
1085 AVCodecContext *avcodec_alloc_context(void);
1086 AVFrame *avcodec_alloc_frame(void);
1088 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1089 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1091 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1092 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
1093 int *frame_size_ptr,
1094 UINT8 *buf, int buf_size);
1095 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1096 int *got_picture_ptr,
1097 UINT8 *buf, int buf_size);
1098 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
1100 UINT8 *buf, int buf_size);
1101 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1102 const short *samples);
1103 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1104 const AVFrame *pict);
1106 int avcodec_close(AVCodecContext *avctx);
1108 void avcodec_register_all(void);
1110 void avcodec_flush_buffers(AVCodecContext *avctx);
1113 /** options' name with default value*/
1115 /** English text help */
1117 /** type of variable */
1119 #define FF_CONF_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
1120 #define FF_CONF_TYPE_DOUBLE 2 // double
1121 #define FF_CONF_TYPE_INT 3 // integer
1122 #define FF_CONF_TYPE_STRING 4 // string (finished with \0)
1123 #define FF_CONF_TYPE_MASK 0x1f // mask for types - upper bits are various flags
1124 #define FF_CONF_TYPE_EXPERT 0x20 // flag for expert option
1125 #define FF_CONF_TYPE_FLAG (FF_CONF_TYPE_BOOL | 0x40)
1126 #define FF_CONF_TYPE_RCOVERIDE (FF_CONF_TYPE_STRING | 0x80)
1127 /** where the parsed value should be stored */
1129 /** min value (min == max -> no limits) */
1131 /** maximum value for double/int */
1133 /** default boo [0,1]l/double/int value */
1136 * default string value (with optional semicolon delimited extra option-list
1137 * i.e. option1;option2;option3
1138 * defval might select other then first argument as default
1141 /** char* list of supported codecs (i.e. ",msmpeg4,h263," NULL - everything */
1142 const char* supported;
1145 void avcodec_getopt(AVCodecContext* avctx, char* str, avc_config_t** config);
1148 * Interface for 0.5.0 version
1150 * do not even think about it's usage for this moment
1154 // compressed size used from given memory buffer
1156 /// I/P/B frame type
1162 * order can't be changed - once it was defined
1166 AVC_OPEN_BY_NAME = 0xACA000,
1167 AVC_OPEN_BY_CODEC_ID,
1172 // pin - struct { uint8_t* src, uint_t src_size }
1173 // pout - struct { AVPicture* img, consumed_bytes,
1175 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1176 // pout - uint_t used_from_dest_size
1179 // query/get video commands
1180 AVC_GET_VERSION = 0xACB000,
1184 AVC_GET_QUANT_TABLE,
1187 // query/get audio commands
1188 AVC_GET_FRAME_SIZE = 0xABC000,
1190 // maybe define some simple structure which
1191 // might be passed to the user - but they can't
1192 // contain any codec specific parts and these
1193 // calls are usualy necessary only few times
1195 // set video commands
1196 AVC_SET_WIDTH = 0xACD000,
1199 // set video encoding commands
1200 AVC_SET_FRAME_RATE = 0xACD800,
1204 // set audio commands
1205 AVC_SET_SAMPLE_RATE = 0xACE000,
1211 * \param handle allocated private structure by libavcodec
1212 * for initialization pass NULL - will be returned pout
1213 * user is supposed to know nothing about its structure
1214 * \param cmd type of operation to be performed
1215 * \param pint input parameter
1216 * \param pout output parameter
1218 * \returns command status - eventually for query command it might return
1219 * integer resulting value
1221 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1224 void *av_malloc(unsigned int size);
1225 void *av_mallocz(unsigned int size);
1226 void av_free(void *ptr);
1227 void __av_freep(void **ptr);
1228 #define av_freep(p) __av_freep((void **)(p))
1229 /* for static data only */
1230 /* call av_free_static to release all staticaly allocated tables */
1231 void av_free_static(void);
1232 void *__av_mallocz_static(void** location, unsigned int size);
1233 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1235 #endif /* AVCODEC_H */