6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4634
9 #define LIBAVCODEC_BUILD_STR "4634"
38 /* various pcm "codecs" */
48 /* various adpcm codecs */
49 CODEC_ID_ADPCM_IMA_QT,
50 CODEC_ID_ADPCM_IMA_WAV,
53 #define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
56 CODEC_TYPE_UNKNOWN = -1,
75 /* currently unused, may be used if 24/32 bits samples ever supported */
77 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
81 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
83 /* motion estimation type, EPZS by default */
93 typedef struct RcOverride{
96 int qscale; // if this is 0 then quality_factor will be used instead
100 /* only for ME compatiblity with old apps */
101 extern int motion_estimation_method;
103 /* ME algos sorted by quality */
104 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
105 ME_X1, ME_EPZS, ME_FULL };
108 #define FF_MAX_B_FRAMES 4
111 these flags can be passed in AVCodecContext.flags before initing
112 Note: note not everything is supported yet
115 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
116 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
117 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
118 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
119 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
120 #define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
121 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
122 /* parent program gurantees that the input for b-frame containing streams is not written to
123 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
124 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
125 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
126 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
127 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
128 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
129 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
130 #define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
131 #define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode
132 allows the last part of a frame to be decoded earlier */
133 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
134 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
136 /* codec capabilities */
138 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
139 #define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
140 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
142 #define CODEC_CAP_PARSE_ONLY 0x0004
144 #define FRAME_RATE_BASE 10000
146 typedef struct AVCodecContext {
148 * the average bitrate
149 * encoding: set by user. unused for constant quantizer encoding
150 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
155 * number of bits the bitstream is allowed to diverge from the reference
156 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
157 * encoding: set by user. unused for constant quantizer encoding
160 int bit_rate_tolerance;
164 * encoding: set by user.
165 * decoding: set by user.
170 * some codecs needs additionnal format info. It is stored here
171 * encoding: set by user.
172 * decoding: set by lavc. (FIXME is this ok?)
177 * motion estimation algorithm used for video coding
178 * encoding: set by user.
184 * some codecs need / can use extra-data like huffman tables
185 * mjpeg: huffman tables
186 * rv10: additional flags
187 * mpeg4: global headers (they can be in the bitstream or here)
188 * encoding: set/allocated/freed by lavc.
189 * decoding: set/allocated/freed by user.
196 * frames per sec multiplied by FRAME_RATE_BASE
197 * for variable fps this is the precission, so if the timestamps
198 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
199 * encoding: set by user
200 * decoding: set by lavc. 0 or the frame_rate if available
205 * encoding: set by user.
206 * decoding: set by user, some codecs might override / change it during playback
211 * encoding: set by user. 0 if not known
212 * decoding: set by lavc. 0 if not known
214 int aspect_ratio_info;
215 #define FF_ASPECT_SQUARE 1
216 #define FF_ASPECT_4_3_625 2
217 #define FF_ASPECT_4_3_525 3
218 #define FF_ASPECT_16_9_625 4
219 #define FF_ASPECT_16_9_525 5
220 #define FF_ASPECT_EXTENDED 15
223 * the number of pictures in a group of pitures, or 0 for intra_only
224 * encoding: set by user.
230 * pixel format, see PIX_FMT_xxx
232 * decoding: set by lavc.
234 enum PixelFormat pix_fmt;
236 int repeat_pict; /* when decoding, this signal how much the picture */
237 /* must be delayed. */
238 /* extra_delay = (repeat_pict / 2) * (1/fps) */
241 * if non NULL, 'draw_horiz_band' is called by the libavcodec
242 * decoder to draw an horizontal band. It improve cache usage. Not
243 * all codecs can do that. You must check the codec capabilities
246 * decoding: set by user.
248 void (*draw_horiz_band)(struct AVCodecContext *s,
249 UINT8 **src_ptr, int linesize,
250 int y, int width, int height);
253 int sample_rate; /* samples per sec */
255 int sample_fmt; /* sample format, currenly unused */
257 /* the following data should not be initialized */
258 int frame_size; /* in samples, initialized when calling 'init' */
259 int frame_number; /* audio or video frame number */
260 int real_pict_num; /* returns the real picture number of
261 previous encoded frame */
264 * 1 -> keyframe, 0-> not
265 * encoding: set by lavc (for the outputed bitstream, not the input frame)
266 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
271 * picture type of the previous en/decoded frame, see ?_TYPE below
272 * encoding: set by lavc (for the outputed bitstream, not the input frame)
273 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
276 /* FIXME: these should have FF_ */
277 #define I_TYPE 1 // Intra
278 #define P_TYPE 2 // Predicted
279 #define B_TYPE 3 // Bi-dir predicted
280 #define S_TYPE 4 // S(GMC)-VOP MPEG4
283 * number of frames the decoded output will be delayed relative to
285 * encoding: set by lavc.
291 * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
292 * stride= mb_width = (width+15)>>4 (FIXME export stride?)
294 * decoding: set by lavc
296 uint8_t *mbskip_table;
298 /* encoding parameters */
300 * quality (between 1 (good) and 31 (bad))
301 * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
302 * decoding: set by lavc
304 int quality; /* quality of the previous encoded frame
306 this is allso used to set the quality in vbr mode
307 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
308 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
309 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
313 * encoding: set by user.
320 * encoding: set by user.
326 * maximum quantizer difference etween frames
327 * encoding: set by user.
333 * maximum number of b frames between non b frames
334 * note: the output will be delayed by max_b_frames+1 relative to the input
335 * encoding: set by user.
341 * qscale factor between ip and b frames
342 * encoding: set by user.
345 float b_quant_factor;
347 /** obsolete FIXME remove */
349 int b_frame_strategy;
353 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too
357 struct AVCodec *codec;
361 /* The following data is for RTP friendly coding */
362 /* By now only H.263/H.263+/MPEG4 coder honours this */
363 int rtp_mode; /* 1 for activate RTP friendly-mode */
364 /* highers numbers represent more error-prone */
365 /* enviroments, by now just "1" exist */
367 int rtp_payload_size; /* The size of the RTP payload, the coder will */
368 /* do it's best to deliver a chunk with size */
369 /* below rtp_payload_size, the chunk will start */
370 /* with a start code on some codecs like H.263 */
371 /* This doesn't take account of any particular */
372 /* headers inside the transmited RTP payload */
375 /* The RTP callcack: This function is called */
376 /* every time the encoder as a packet to send */
377 /* Depends on the encoder if the data starts */
378 /* with a Start Code (it should) H.263 does */
379 void (*rtp_callback)(void *data, int size, int packet_number);
382 * if you set get_psnr to 1 then after encoding you will have the
383 * PSNR on psnr_y/cb/cr
384 * encoding: set by user (1-> on, 0-> off)
392 /* statistics, used for 2-pass encoding */
403 * number of bits used for the previously encoded frame
404 * encoding: set by lavc
410 * private data of the user, can be used to carry app specific stuff
411 * encoding: set by user
412 * decoding: set by user
417 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
418 enum CodecID codec_id; /* see CODEC_ID_xxx */
419 unsigned int codec_tag; /* codec tag, only used if unknown codec */
422 * workaround bugs in encoders which sometimes cannot be detected automatically
424 * decoding: set by user
427 #define FF_BUG_AUTODETECT 1 //autodetection
428 #define FF_BUG_OLD_MSMPEG4 2
429 #define FF_BUG_XVID_ILACE 4
430 #define FF_BUG_UMP4 8
431 #define FF_BUG_NO_PADDING 16
432 #define FF_BUG_AC_VLC 32
433 #define FF_BUG_QPEL_CHROMA 64
434 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
437 * encoding: set by user
440 int luma_elim_threshold;
443 * encoding: set by user
446 int chroma_elim_threshold;
449 * strictly follow the std (MPEG4, ...)
450 * encoding: set by user
453 int strict_std_compliance;
456 * qscale offset between ip and b frames
457 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
458 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
459 * encoding: set by user.
462 float b_quant_offset;
465 * error resilience {-1,0,1} higher values will detect more errors but may missdetect
466 * some more or less valid parts as errors
468 * decoding: set by user
470 int error_resilience;
473 * obsolete, just here to keep ABI compatible (should be removed perhaps, dunno)
480 * decoding: set by lavc
485 * buffer, where the next picture should be decoded into
487 * decoding: set by user in get_buffer_callback to a buffer into which the next part
488 * of the bitstream will be decoded, and set by lavc at end of frame to the
489 * next frame which needs to be displayed
491 uint8_t *dr_buffer[3];
494 * stride of the luminance part of the dr buffer
496 * decoding: set by user
501 * same behavior as dr_buffer, just for some private data of the user
503 * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
505 void *dr_opaque_frame;
508 * called at the beginning of each frame to get a buffer for it
510 * decoding: set by user
512 int (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
515 * is 1 if the decoded stream contains b frames, 0 otherwise
517 * decoding: set by lavc
522 * stride of the chrominance part of the dr buffer
524 * decoding: set by user
529 * number of dr buffers
531 * decoding: set by user
533 int dr_ip_buffer_count;
535 int block_align; /* used by some WAV based audio codecs */
537 int parse_only; /* decoding only: if true, only parsing is done
538 (function avcodec_parse_frame()). The frame
539 data is returned. Only MPEG codecs support this now. */
542 * 0-> h263 quant 1-> mpeg quant
543 * encoding: set by user.
549 * pass1 encoding statistics output buffer
550 * encoding: set by lavc
553 char *stats_out; /* encoding statistics output buffer */
556 * pass2 encoding statistics input buffer.
557 * concatenated stuff from stats_out of pass1 should be placed here
558 * encoding: allocated/set/freed by user
564 * ratecontrol qmin qmax limiting method
565 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
566 * encoding: set by user.
575 * ratecontrol override, see RcOverride
576 * encoding: allocated/set/freed by user.
579 RcOverride *rc_override;
580 int rc_override_count;
583 * rate control equation
584 * encoding: set by user
591 * encoding: set by user.
598 * encoding: set by user.
604 * decoder bitstream buffer size
605 * encoding: set by user.
609 float rc_buffer_aggressivity;
612 * qscale factor between p and i frames
613 * encoding: set by user.
616 float i_quant_factor;
619 * qscale offset between p and i frames
620 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
621 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
622 * encoding: set by user.
625 float i_quant_offset;
628 * initial complexity for pass1 ratecontrol
629 * encoding: set by user.
632 float rc_initial_cplx;
635 * custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
636 * encoding: set by user.
637 * decoding: set by lavc.
643 * dct algorithm, see FF_DCT_* below
644 * encoding: set by user
648 #define FF_DCT_AUTO 0
649 #define FF_DCT_FASTINT 1
652 #define FF_DCT_MLIB 4
655 * presentation timestamp in micro seconds (time when frame should be shown to user)
656 * if 0 then the frame_rate will be used as reference
657 * encoding: set by user
658 * decoding; set by lavc
663 * luminance masking (0-> disabled)
664 * encoding: set by user
670 * temporary complexity masking (0-> disabled)
671 * encoding: set by user
674 float temporal_cplx_masking;
677 * spatial complexity masking (0-> disabled)
678 * encoding: set by user
681 float spatial_cplx_masking;
684 * p block masking (0-> disabled)
685 * encoding: set by user
691 * darkness masking (0-> disabled)
692 * encoding: set by user
698 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
699 * this is used to workaround some encoder bugs
701 * decoding: set by user, will be converted to upper case by lavc during init
706 * idct algorithm, see FF_IDCT_* below
707 * encoding: set by user
708 * decoding: set by user
711 #define FF_IDCT_AUTO 0
712 #define FF_IDCT_INT 1
713 #define FF_IDCT_SIMPLE 2
714 #define FF_IDCT_SIMPLEMMX 3
715 #define FF_IDCT_LIBMPEG2MMX 4
716 #define FF_IDCT_PS2 5
717 #define FF_IDCT_MLIB 6
718 #define FF_IDCT_ARM 7
722 * encoding: set by lavc
723 * decoding: set by user (or 0)
727 * slice offsets in the frame in bytes
728 * encoding: set/allocated by lavc
729 * decoding: set/allocated by user (or NULL)
734 * error concealment flags
736 * decoding: set by user
738 int error_concealment;
739 #define FF_EC_GUESS_MVS 1
740 #define FF_EC_DEBLOCK 2
743 * QP table of the currently decoded frame
745 * decoding: set by lavc
747 int8_t *current_qscale_table;
749 * QP table of the currently displayed frame
751 * decoding: set by lavc
753 int8_t *display_qscale_table;
756 typedef struct AVCodec {
761 int (*init)(AVCodecContext *);
762 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
763 int (*close)(AVCodecContext *);
764 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
765 UINT8 *buf, int buf_size);
767 struct AVCodec *next;
770 /* three components are given, that's all */
771 typedef struct AVPicture {
776 extern AVCodec ac3_encoder;
777 extern AVCodec mp2_encoder;
778 extern AVCodec mp3lame_encoder;
779 extern AVCodec oggvorbis_encoder;
780 extern AVCodec mpeg1video_encoder;
781 extern AVCodec h263_encoder;
782 extern AVCodec h263p_encoder;
783 extern AVCodec rv10_encoder;
784 extern AVCodec mjpeg_encoder;
785 extern AVCodec mpeg4_encoder;
786 extern AVCodec msmpeg4v1_encoder;
787 extern AVCodec msmpeg4v2_encoder;
788 extern AVCodec msmpeg4v3_encoder;
789 extern AVCodec wmv1_encoder;
790 extern AVCodec wmv2_encoder;
792 extern AVCodec h263_decoder;
793 extern AVCodec mpeg4_decoder;
794 extern AVCodec msmpeg4v1_decoder;
795 extern AVCodec msmpeg4v2_decoder;
796 extern AVCodec msmpeg4v3_decoder;
797 extern AVCodec wmv1_decoder;
798 extern AVCodec wmv2_decoder;
799 extern AVCodec mpeg_decoder;
800 extern AVCodec h263i_decoder;
801 extern AVCodec rv10_decoder;
802 extern AVCodec svq1_decoder;
803 extern AVCodec dvvideo_decoder;
804 extern AVCodec dvaudio_decoder;
805 extern AVCodec wmav1_decoder;
806 extern AVCodec wmav2_decoder;
807 extern AVCodec mjpeg_decoder;
808 extern AVCodec mp2_decoder;
809 extern AVCodec mp3_decoder;
810 extern AVCodec mace3_decoder;
811 extern AVCodec mace6_decoder;
814 #define PCM_CODEC(id, name) \
815 extern AVCodec name ## _decoder; \
816 extern AVCodec name ## _encoder;
818 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
819 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
820 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
821 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
822 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
823 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
824 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
825 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
829 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
830 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
831 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
835 /* dummy raw video codec */
836 extern AVCodec rawvideo_codec;
838 /* the following codecs use external GPL libs */
839 extern AVCodec ac3_decoder;
843 struct ReSampleContext;
845 typedef struct ReSampleContext ReSampleContext;
847 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
848 int output_rate, int input_rate);
849 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
850 void audio_resample_close(ReSampleContext *s);
852 /* YUV420 format is assumed ! */
854 struct ImgReSampleContext;
856 typedef struct ImgReSampleContext ImgReSampleContext;
858 ImgReSampleContext *img_resample_init(int output_width, int output_height,
859 int input_width, int input_height);
861 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
862 int iwidth, int iheight,
863 int topBand, int bottomBand,
864 int leftBand, int rightBand);
866 void img_resample(ImgReSampleContext *s,
867 AVPicture *output, AVPicture *input);
869 void img_resample_close(ImgReSampleContext *s);
871 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
872 int pix_fmt, int width, int height);
873 int avpicture_get_size(int pix_fmt, int width, int height);
875 /* convert among pixel formats */
876 int img_convert(AVPicture *dst, int dst_pix_fmt,
877 AVPicture *src, int pix_fmt,
878 int width, int height);
880 /* deinterlace a picture */
881 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
882 int pix_fmt, int width, int height);
884 /* external high level API */
886 extern AVCodec *first_avcodec;
888 /* returns LIBAVCODEC_VERSION_INT constant */
889 unsigned avcodec_version(void);
890 /* returns LIBAVCODEC_BUILD constant */
891 unsigned avcodec_build(void);
892 void avcodec_init(void);
894 void avcodec_set_bit_exact(void);
896 void register_avcodec(AVCodec *format);
897 AVCodec *avcodec_find_encoder(enum CodecID id);
898 AVCodec *avcodec_find_encoder_by_name(const char *name);
899 AVCodec *avcodec_find_decoder(enum CodecID id);
900 AVCodec *avcodec_find_decoder_by_name(const char *name);
901 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
903 AVCodecContext *avcodec_alloc_context(void);
904 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
905 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
907 UINT8 *buf, int buf_size);
908 int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
909 int *got_picture_ptr,
910 UINT8 *buf, int buf_size);
911 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
913 UINT8 *buf, int buf_size);
914 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
915 const short *samples);
916 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
917 const AVPicture *pict);
919 int avcodec_close(AVCodecContext *avctx);
921 void avcodec_register_all(void);
923 void avcodec_flush_buffers(AVCodecContext *avctx);
925 // deprecated / obsolete stuff, WILL be removed
933 * Interface for 0.5.0 version
935 * do not even think about it's usage for this moment
939 // compressed size used from given memory buffer
947 * order can't be changed - once it was defined
951 AVC_OPEN_BY_NAME = 0xACA000,
952 AVC_OPEN_BY_CODEC_ID,
957 // pin - struct { uint8_t* src, uint_t src_size }
958 // pout - struct { AVPicture* img, consumed_bytes,
960 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
961 // pout - uint_t used_from_dest_size
964 // query/get video commands
965 AVC_GET_VERSION = 0xACB000,
972 // query/get audio commands
973 AVC_GET_FRAME_SIZE = 0xABC000,
975 // maybe define some simple structure which
976 // might be passed to the user - but they can't
977 // contain any codec specific parts and these
978 // calls are usualy necessary only few times
980 // set video commands
981 AVC_SET_WIDTH = 0xACD000,
984 // set video encoding commands
985 AVC_SET_FRAME_RATE = 0xACD800,
989 // set audio commands
990 AVC_SET_SAMPLE_RATE = 0xACE000,
996 * \param handle allocated private structure by libavcodec
997 * for initialization pass NULL - will be returned pout
998 * user is supposed to know nothing about its structure
999 * \param cmd type of operation to be performed
1000 * \param pint input parameter
1001 * \param pout output parameter
1003 * \returns command status - eventually for query command it might return
1004 * integer resulting value
1006 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1009 void *av_malloc(int size);
1010 void *av_mallocz(int size);
1011 void av_free(void *ptr);
1012 void __av_freep(void **ptr);
1013 #define av_freep(p) __av_freep((void **)(p))
1015 #endif /* AVCODEC_H */