16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000408
19 #define FFMPEG_VERSION "0.4.8"
20 #define LIBAVCODEC_BUILD 4713
22 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23 #define LIBAVCODEC_VERSION FFMPEG_VERSION
25 #define AV_STRINGIFY(s) AV_TOSTRING(s)
26 #define AV_TOSTRING(s) #s
27 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
29 #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
30 #define AV_TIME_BASE 1000000
35 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
36 CODEC_ID_MPEG2VIDEO_XVMC,
41 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
82 CODEC_ID_INTERPLAY_VIDEO,
101 /* various pcm "codecs" */
111 /* various adpcm codecs */
112 CODEC_ID_ADPCM_IMA_QT,
113 CODEC_ID_ADPCM_IMA_WAV,
114 CODEC_ID_ADPCM_IMA_DK3,
115 CODEC_ID_ADPCM_IMA_DK4,
116 CODEC_ID_ADPCM_IMA_WS,
117 CODEC_ID_ADPCM_IMA_SMJPEG,
129 /* RealAudio codecs*/
133 /* various DPCM codecs */
135 CODEC_ID_INTERPLAY_DPCM,
140 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
141 stream (only used by libavformat) */
144 /* CODEC_ID_MP3LAME is absolete */
145 #define CODEC_ID_MP3LAME CODEC_ID_MP3
148 CODEC_TYPE_UNKNOWN = -1,
155 * Pixel format. Notes:
157 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
158 * color is put together as:
159 * (A << 24) | (R << 16) | (G << 8) | B
160 * This is stored as BGRA on little endian CPU architectures and ARGB on
163 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
164 * image data is stored in AVFrame.data[0]. The palette is transported in
165 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
166 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
167 * also endian-specific). Note also that the individual RGB palette
168 * components stored in AVFrame.data[1] should be in the range 0..255.
169 * This is important as many custom PAL8 video codecs that were designed
170 * to run on the IBM VGA graphics adapter use 6-bit palette components.
173 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
175 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
176 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
177 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
178 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
179 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
180 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
181 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
182 PIX_FMT_RGB565, ///< always stored in cpu endianness
183 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
185 PIX_FMT_MONOWHITE, ///< 0 is white
186 PIX_FMT_MONOBLACK, ///< 0 is black
187 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
188 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
189 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
190 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
191 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
192 PIX_FMT_XVMC_MPEG2_IDCT,
196 /* currently unused, may be used if 24/32 bits samples ever supported */
198 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
202 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
205 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
206 * this is mainly needed because some optimized bitstream readers read
207 * 32 or 64 bit at once and could read over the end<br>
208 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
209 * MPEG bitstreams could cause overread and segfault
211 #define FF_INPUT_BUFFER_PADDING_SIZE 8
213 /* motion estimation type, EPZS by default */
223 typedef struct RcOverride{
226 int qscale; // if this is 0 then quality_factor will be used instead
227 float quality_factor;
230 /* only for ME compatiblity with old apps */
231 extern int motion_estimation_method;
233 #define FF_MAX_B_FRAMES 8
236 these flags can be passed in AVCodecContext.flags before initing
237 Note: note not everything is supported yet
240 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
241 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
242 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
243 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
244 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
245 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
246 /* parent program gurantees that the input for b-frame containing streams is not written to
247 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
248 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
249 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
250 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
251 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
252 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
253 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
254 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
255 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
256 of only at frame boundaries */
257 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
258 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
259 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
260 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
261 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
262 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
263 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
264 /* Fx : Flag for h263+ extra options */
265 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
266 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
267 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
268 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
269 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
270 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
271 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
272 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
273 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
274 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
275 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
276 #define CODEC_FLAG_CLOSED_GOP 0x80000000
277 /* Unsupported options :
278 * Syntax Arithmetic coding (SAC)
279 * Reference Picture Selection
280 * Independant Segment Decoding */
282 /* codec capabilities */
284 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
286 * Codec uses get_buffer() for allocating buffers.
287 * direct rendering method 1
289 #define CODEC_CAP_DR1 0x0002
290 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
292 #define CODEC_CAP_PARSE_ONLY 0x0004
293 #define CODEC_CAP_TRUNCATED 0x0008
294 /* codec can export data for HW decoding (XvMC) */
295 #define CODEC_CAP_HWACCEL 0x0010
297 //the following defines might change, so dont expect compatibility if u use them
298 #define MB_TYPE_INTRA4x4 0x0001
299 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
300 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
301 #define MB_TYPE_16x16 0x0008
302 #define MB_TYPE_16x8 0x0010
303 #define MB_TYPE_8x16 0x0020
304 #define MB_TYPE_8x8 0x0040
305 #define MB_TYPE_INTERLACED 0x0080
306 #define MB_TYPE_DIRECT2 0x0100 //FIXME
307 #define MB_TYPE_ACPRED 0x0200
308 #define MB_TYPE_GMC 0x0400
309 #define MB_TYPE_SKIP 0x0800
310 #define MB_TYPE_P0L0 0x1000
311 #define MB_TYPE_P1L0 0x2000
312 #define MB_TYPE_P0L1 0x4000
313 #define MB_TYPE_P1L1 0x8000
314 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
315 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
316 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
317 #define MB_TYPE_QUANT 0x00010000
318 #define MB_TYPE_CBP 0x00020000
319 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
323 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
325 typedef struct AVPanScan{
328 * - encoding: set by user.
329 * - decoding: set by lavc
334 * width and height in 1/16 pel
335 * - encoding: set by user.
336 * - decoding: set by lavc
342 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
343 * - encoding: set by user.
344 * - decoding: set by lavc
346 int16_t position[3][2];
349 #define FF_COMMON_FRAME \
351 * pointer to the picture planes.\
352 * this might be different from the first allocated byte\
359 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
360 * this isnt used by lavc unless the default get/release_buffer() is used\
366 * 1 -> keyframe, 0-> not\
367 * - encoding: set by lavc\
368 * - decoding: set by lavc\
373 * picture type of the frame, see ?_TYPE below.\
374 * - encoding: set by lavc for coded_picture (and set by user for input)\
375 * - decoding: set by lavc\
380 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
381 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
382 * - encoding: MUST be set by user\
383 * - decoding: set by lavc\
388 * picture number in bitstream order.\
389 * - encoding: set by\
390 * - decoding: set by lavc\
392 int coded_picture_number;\
394 * picture number in display order.\
395 * - encoding: set by\
396 * - decoding: set by lavc\
398 int display_picture_number;\
401 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
402 * - encoding: set by lavc for coded_picture (and set by user for input)\
403 * - decoding: set by lavc\
408 * buffer age (1->was last buffer and dint change, 2->..., ...).\
409 * set to INT_MAX if the buffer has not been used yet \
410 * - encoding: unused\
411 * - decoding: MUST be set by get_buffer()\
416 * is this picture used as reference\
417 * - encoding: unused\
418 * - decoding: set by lavc (before get_buffer() call))\
424 * - encoding: unused\
425 * - decoding: set by lavc\
427 int8_t *qscale_table;\
430 * - encoding: unused\
431 * - decoding: set by lavc\
436 * mbskip_table[mb]>=1 if MB didnt change\
437 * stride= mb_width = (width+15)>>4\
438 * - encoding: unused\
439 * - decoding: set by lavc\
441 uint8_t *mbskip_table;\
444 * Motion vector table\
445 * - encoding: set by user\
446 * - decoding: set by lavc\
448 int16_t (*motion_val[2])[2];\
451 * Macroblock type table\
452 * mb_type_base + mb_width + 2\
453 * - encoding: set by user\
454 * - decoding: set by lavc\
459 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
460 * - encoding: unused\
461 * - decoding: set by lavc\
463 uint8_t motion_subsample_log2;\
466 * for some private data of the user\
467 * - encoding: unused\
468 * - decoding: set by user\
474 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
475 * - decoding: unused\
480 * type of the buffer (to keep track of who has to dealloc data[*])\
481 * - encoding: set by the one who allocs it\
482 * - decoding: set by the one who allocs it\
483 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
488 * when decoding, this signal how much the picture must be delayed.\
489 * extra_delay = repeat_pict / (2*fps)\
490 * - encoding: unused\
491 * - decoding: set by lavc\
501 * The content of the picture is interlaced.\
502 * - encoding: set by user\
503 * - decoding: set by lavc (default 0)\
505 int interlaced_frame;\
508 * if the content is interlaced, is top field displayed first.\
509 * - encoding: set by user\
510 * - decoding: set by lavc\
512 int top_field_first;\
516 * - encoding: set by user\
517 * - decoding: set by lavc\
519 AVPanScan *pan_scan;\
522 * tell user application that palette has changed from previous frame.\
523 * - encoding: ??? (no palette-enabled encoder yet)\
524 * - decoding: set by lavc (default 0)\
526 int palette_has_changed;\
529 * Codec suggestion on buffer type if != 0\
530 * - encoding: unused\
531 * - decoding: set by lavc (before get_buffer() call))\
537 * - encoding: unused\
538 * - decoding: set by lavc\
543 * Motion referece frame index\
544 * - encoding: set by user\
545 * - decoding: set by lavc\
547 int8_t *ref_index[2];
549 #define FF_QSCALE_TYPE_MPEG1 0
550 #define FF_QSCALE_TYPE_MPEG2 1
552 #define FF_BUFFER_TYPE_INTERNAL 1
553 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
554 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
555 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
558 #define FF_I_TYPE 1 // Intra
559 #define FF_P_TYPE 2 // Predicted
560 #define FF_B_TYPE 3 // Bi-dir predicted
561 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
565 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
566 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
567 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
568 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
573 typedef struct AVFrame {
577 #define DEFAULT_FRAME_RATE_BASE 1001000
582 typedef struct AVCLASS AVClass;
584 const char* class_name;
585 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
586 or AVFormatContext, which begin with an AVClass.
587 Needed because av_log is in libavcodec and has no visibility
588 of AVIn/OutputFormat */
592 * main external api structure.
594 typedef struct AVCodecContext {
596 * Info on struct for av_log
597 * - set by avcodec_alloc_context
601 * the average bitrate.
602 * - encoding: set by user. unused for constant quantizer encoding
603 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
608 * number of bits the bitstream is allowed to diverge from the reference.
609 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
610 * - encoding: set by user. unused for constant quantizer encoding
613 int bit_rate_tolerance;
617 * - encoding: set by user.
618 * - decoding: set by user.
623 * some codecs needs additionnal format info. It is stored here
624 * - encoding: set by user.
625 * - decoding: set by lavc. (FIXME is this ok?)
630 * motion estimation algorithm used for video coding.
631 * - encoding: MUST be set by user.
637 * some codecs need / can use extra-data like huffman tables.
638 * mjpeg: huffman tables
639 * rv10: additional flags
640 * mpeg4: global headers (they can be in the bitstream or here)
641 * - encoding: set/allocated/freed by lavc.
642 * - decoding: set/allocated/freed by user.
649 * frames per sec multiplied by frame_rate_base.
650 * for variable fps this is the precission, so if the timestamps
651 * can be specified in msec precssion then this is 1000*frame_rate_base
652 * - encoding: MUST be set by user
653 * - decoding: set by lavc. 0 or the frame_rate if available
659 * - encoding: MUST be set by user.
660 * - decoding: set by user if known, codec should override / dynamically change if needed
664 #define FF_ASPECT_EXTENDED 15
667 * the number of pictures in a group of pitures, or 0 for intra_only.
668 * - encoding: set by user.
674 * pixel format, see PIX_FMT_xxx.
675 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
676 * conversion is in order. This only works for
677 * codecs with one supported pix_fmt, we should
678 * do something for a generic case as well.
679 * - decoding: set by lavc.
681 enum PixelFormat pix_fmt;
684 * Frame rate emulation. If not zero lower layer (i.e. format handler)
685 * has to read frames at native frame rate.
686 * - encoding: set by user.
687 * - decoding: unused.
692 * if non NULL, 'draw_horiz_band' is called by the libavcodec
693 * decoder to draw an horizontal band. It improve cache usage. Not
694 * all codecs can do that. You must check the codec capabilities
697 * - decoding: set by user.
698 * @param height the height of the slice
699 * @param y the y position of the slice
700 * @param type 1->top field, 2->bottom field, 3->frame
701 * @param offset offset into the AVFrame.data from which the slice should be read
703 void (*draw_horiz_band)(struct AVCodecContext *s,
704 const AVFrame *src, int offset[4],
705 int y, int type, int height);
708 int sample_rate; ///< samples per sec
710 int sample_fmt; ///< sample format, currenly unused
712 /* the following data should not be initialized */
713 int frame_size; ///< in samples, initialized when calling 'init'
714 int frame_number; ///< audio or video frame number
715 int real_pict_num; ///< returns the real picture number of previous encoded frame
718 * number of frames the decoded output will be delayed relative to
720 * - encoding: set by lavc.
725 /* - encoding parameters */
726 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
727 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
731 * - encoding: set by user.
738 * - encoding: set by user.
744 * maximum quantizer difference etween frames.
745 * - encoding: set by user.
751 * maximum number of b frames between non b frames.
752 * note: the output will be delayed by max_b_frames+1 relative to the input
753 * - encoding: set by user.
759 * qscale factor between ip and b frames.
760 * - encoding: set by user.
763 float b_quant_factor;
765 /** obsolete FIXME remove */
767 int b_frame_strategy;
772 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
776 struct AVCodec *codec;
780 /* unused, FIXME remove*/
783 int rtp_payload_size; /* The size of the RTP payload, the coder will */
784 /* do it's best to deliver a chunk with size */
785 /* below rtp_payload_size, the chunk will start */
786 /* with a start code on some codecs like H.263 */
787 /* This doesn't take account of any particular */
788 /* headers inside the transmited RTP payload */
791 /* The RTP callcack: This function is called */
792 /* every time the encoder as a packet to send */
793 /* Depends on the encoder if the data starts */
794 /* with a Start Code (it should) H.263 does */
795 void (*rtp_callback)(void *data, int size, int packet_number);
797 /* statistics, used for 2-pass encoding */
808 * number of bits used for the previously encoded frame.
809 * - encoding: set by lavc
815 * private data of the user, can be used to carry app specific stuff.
816 * - encoding: set by user
817 * - decoding: set by user
822 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
823 enum CodecID codec_id; /* see CODEC_ID_xxx */
826 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
827 * this is used to workaround some encoder bugs
828 * - encoding: set by user, if not then the default based on codec_id will be used
829 * - decoding: set by user, will be converted to upper case by lavc during init
831 unsigned int codec_tag;
834 * workaround bugs in encoders which sometimes cannot be detected automatically.
836 * - decoding: set by user
839 #define FF_BUG_AUTODETECT 1 ///< autodetection
840 #define FF_BUG_OLD_MSMPEG4 2
841 #define FF_BUG_XVID_ILACE 4
842 #define FF_BUG_UMP4 8
843 #define FF_BUG_NO_PADDING 16
844 #define FF_BUG_AMV 32
845 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
846 #define FF_BUG_QPEL_CHROMA 64
847 #define FF_BUG_STD_QPEL 128
848 #define FF_BUG_QPEL_CHROMA2 256
849 #define FF_BUG_DIRECT_BLOCKSIZE 512
850 #define FF_BUG_EDGE 1024
851 #define FF_BUG_HPEL_CHROMA 2048
852 #define FF_BUG_DC_CLIP 4096
853 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
856 * luma single coeff elimination threshold.
857 * - encoding: set by user
860 int luma_elim_threshold;
863 * chroma single coeff elimination threshold.
864 * - encoding: set by user
867 int chroma_elim_threshold;
870 * strictly follow the std (MPEG4, ...).
871 * - encoding: set by user
874 int strict_std_compliance;
877 * qscale offset between ip and b frames.
878 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
879 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
880 * - encoding: set by user.
883 float b_quant_offset;
886 * error resilience higher values will detect more errors but may missdetect
887 * some more or less valid parts as errors.
889 * - decoding: set by user
891 int error_resilience;
892 #define FF_ER_CAREFULL 1
893 #define FF_ER_COMPLIANT 2
894 #define FF_ER_AGGRESSIVE 3
895 #define FF_ER_VERY_AGGRESSIVE 4
898 * called at the beginning of each frame to get a buffer for it.
899 * if pic.reference is set then the frame will be read later by lavc
900 * width and height should be rounded up to the next multiple of 16
902 * - decoding: set by lavc, user can override
904 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
907 * called to release buffers which where allocated with get_buffer.
908 * a released buffer can be reused in get_buffer()
909 * pic.data[*] must be set to NULL
911 * - decoding: set by lavc, user can override
913 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
916 * is 1 if the decoded stream contains b frames, 0 otherwise.
918 * - decoding: set by lavc
922 int block_align; ///< used by some WAV based audio codecs
924 int parse_only; /* - decoding only: if true, only parsing is done
925 (function avcodec_parse_frame()). The frame
926 data is returned. Only MPEG codecs support this now. */
929 * 0-> h263 quant 1-> mpeg quant.
930 * - encoding: set by user.
936 * pass1 encoding statistics output buffer.
937 * - encoding: set by lavc
943 * pass2 encoding statistics input buffer.
944 * concatenated stuff from stats_out of pass1 should be placed here
945 * - encoding: allocated/set/freed by user
951 * ratecontrol qmin qmax limiting method.
952 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
953 * - encoding: set by user.
962 * ratecontrol override, see RcOverride.
963 * - encoding: allocated/set/freed by user.
966 RcOverride *rc_override;
967 int rc_override_count;
970 * rate control equation.
971 * - encoding: set by user
978 * - encoding: set by user.
985 * - encoding: set by user.
991 * decoder bitstream buffer size.
992 * - encoding: set by user.
996 float rc_buffer_aggressivity;
999 * qscale factor between p and i frames.
1000 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1001 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1002 * - encoding: set by user.
1003 * - decoding: unused
1005 float i_quant_factor;
1008 * qscale offset between p and i frames.
1009 * - encoding: set by user.
1010 * - decoding: unused
1012 float i_quant_offset;
1015 * initial complexity for pass1 ratecontrol.
1016 * - encoding: set by user.
1017 * - decoding: unused
1019 float rc_initial_cplx;
1022 * dct algorithm, see FF_DCT_* below.
1023 * - encoding: set by user
1024 * - decoding: unused
1027 #define FF_DCT_AUTO 0
1028 #define FF_DCT_FASTINT 1
1029 #define FF_DCT_INT 2
1030 #define FF_DCT_MMX 3
1031 #define FF_DCT_MLIB 4
1032 #define FF_DCT_ALTIVEC 5
1033 #define FF_DCT_FAAN 6
1036 * luminance masking (0-> disabled).
1037 * - encoding: set by user
1038 * - decoding: unused
1043 * temporary complexity masking (0-> disabled).
1044 * - encoding: set by user
1045 * - decoding: unused
1047 float temporal_cplx_masking;
1050 * spatial complexity masking (0-> disabled).
1051 * - encoding: set by user
1052 * - decoding: unused
1054 float spatial_cplx_masking;
1057 * p block masking (0-> disabled).
1058 * - encoding: set by user
1059 * - decoding: unused
1064 * darkness masking (0-> disabled).
1065 * - encoding: set by user
1066 * - decoding: unused
1071 /* for binary compatibility */
1075 * idct algorithm, see FF_IDCT_* below.
1076 * - encoding: set by user
1077 * - decoding: set by user
1080 #define FF_IDCT_AUTO 0
1081 #define FF_IDCT_INT 1
1082 #define FF_IDCT_SIMPLE 2
1083 #define FF_IDCT_SIMPLEMMX 3
1084 #define FF_IDCT_LIBMPEG2MMX 4
1085 #define FF_IDCT_PS2 5
1086 #define FF_IDCT_MLIB 6
1087 #define FF_IDCT_ARM 7
1088 #define FF_IDCT_ALTIVEC 8
1089 #define FF_IDCT_SH4 9
1090 #define FF_IDCT_SIMPLEARM 10
1094 * - encoding: set by lavc
1095 * - decoding: set by user (or 0)
1099 * slice offsets in the frame in bytes.
1100 * - encoding: set/allocated by lavc
1101 * - decoding: set/allocated by user (or NULL)
1106 * error concealment flags.
1107 * - encoding: unused
1108 * - decoding: set by user
1110 int error_concealment;
1111 #define FF_EC_GUESS_MVS 1
1112 #define FF_EC_DEBLOCK 2
1115 * dsp_mask could be add used to disable unwanted CPU features
1116 * CPU features (i.e. MMX, SSE. ...)
1118 * with FORCE flag you may instead enable given CPU features
1119 * (Dangerous: usable in case of misdetection, improper usage however will
1120 * result into program crash)
1123 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1124 /* lower 16 bits - CPU features */
1126 #define FF_MM_MMX 0x0001 /* standard MMX */
1127 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1128 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1129 #define FF_MM_SSE 0x0008 /* SSE functions */
1130 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1131 #endif /* HAVE_MMX */
1134 * bits per sample/pixel from the demuxer (needed for huffyuv).
1135 * - encoding: set by lavc
1136 * - decoding: set by user
1138 int bits_per_sample;
1141 * prediction method (needed for huffyuv).
1142 * - encoding: set by user
1143 * - decoding: unused
1145 int prediction_method;
1146 #define FF_PRED_LEFT 0
1147 #define FF_PRED_PLANE 1
1148 #define FF_PRED_MEDIAN 2
1151 * sample aspect ratio (0 if unknown).
1152 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1153 * - encoding: set by user.
1154 * - decoding: set by lavc.
1156 AVRational sample_aspect_ratio;
1159 * the picture in the bitstream.
1160 * - encoding: set by lavc
1161 * - decoding: set by lavc
1163 AVFrame *coded_frame;
1167 * - encoding: set by user.
1168 * - decoding: set by user.
1171 #define FF_DEBUG_PICT_INFO 1
1172 #define FF_DEBUG_RC 2
1173 #define FF_DEBUG_BITSTREAM 4
1174 #define FF_DEBUG_MB_TYPE 8
1175 #define FF_DEBUG_QP 16
1176 #define FF_DEBUG_MV 32
1177 #define FF_DEBUG_DCT_COEFF 0x00000040
1178 #define FF_DEBUG_SKIP 0x00000080
1179 #define FF_DEBUG_STARTCODE 0x00000100
1180 #define FF_DEBUG_PTS 0x00000200
1181 #define FF_DEBUG_ER 0x00000400
1182 #define FF_DEBUG_MMCO 0x00000800
1183 #define FF_DEBUG_BUGS 0x00001000
1184 #define FF_DEBUG_VIS_QP 0x00002000
1185 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1189 * - encoding: set by user.
1190 * - decoding: set by user.
1193 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1194 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1195 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1199 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1200 * - decoding: unused
1205 * minimum MB quantizer.
1206 * - encoding: set by user.
1207 * - decoding: unused
1212 * maximum MB quantizer.
1213 * - encoding: set by user.
1214 * - decoding: unused
1219 * motion estimation compare function.
1220 * - encoding: set by user.
1221 * - decoding: unused
1225 * subpixel motion estimation compare function.
1226 * - encoding: set by user.
1227 * - decoding: unused
1231 * macroblock compare function (not supported yet).
1232 * - encoding: set by user.
1233 * - decoding: unused
1237 * interlaced dct compare function
1238 * - encoding: set by user.
1239 * - decoding: unused
1242 #define FF_CMP_SAD 0
1243 #define FF_CMP_SSE 1
1244 #define FF_CMP_SATD 2
1245 #define FF_CMP_DCT 3
1246 #define FF_CMP_PSNR 4
1247 #define FF_CMP_BIT 5
1249 #define FF_CMP_ZERO 7
1250 #define FF_CMP_VSAD 8
1251 #define FF_CMP_VSSE 9
1252 #define FF_CMP_CHROMA 256
1255 * ME diamond size & shape.
1256 * - encoding: set by user.
1257 * - decoding: unused
1262 * amount of previous MV predictors (2a+1 x 2a+1 square).
1263 * - encoding: set by user.
1264 * - decoding: unused
1266 int last_predictor_count;
1269 * pre pass for motion estimation.
1270 * - encoding: set by user.
1271 * - decoding: unused
1276 * motion estimation pre pass compare function.
1277 * - encoding: set by user.
1278 * - decoding: unused
1283 * ME pre pass diamond size & shape.
1284 * - encoding: set by user.
1285 * - decoding: unused
1290 * subpel ME quality.
1291 * - encoding: set by user.
1292 * - decoding: unused
1294 int me_subpel_quality;
1297 * callback to negotiate the pixelFormat.
1298 * @param fmt is the list of formats which are supported by the codec,
1299 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1300 * the first is allways the native one
1301 * @return the choosen format
1302 * - encoding: unused
1303 * - decoding: set by user, if not set then the native format will always be choosen
1305 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1308 * DTG active format information (additionnal aspect ratio
1309 * information only used in DVB MPEG2 transport streams). 0 if
1312 * - encoding: unused.
1313 * - decoding: set by decoder
1315 int dtg_active_format;
1316 #define FF_DTG_AFD_SAME 8
1317 #define FF_DTG_AFD_4_3 9
1318 #define FF_DTG_AFD_16_9 10
1319 #define FF_DTG_AFD_14_9 11
1320 #define FF_DTG_AFD_4_3_SP_14_9 13
1321 #define FF_DTG_AFD_16_9_SP_14_9 14
1322 #define FF_DTG_AFD_SP_4_3 15
1325 * Maximum motion estimation search range in subpel units.
1326 * if 0 then no limit
1328 * - encoding: set by user.
1329 * - decoding: unused.
1335 * for variable fps this is 1
1336 * - encoding: set by user.
1337 * - decoding: set by lavc.
1338 * @todo move this after frame_rate
1341 int frame_rate_base;
1343 * intra quantizer bias.
1344 * - encoding: set by user.
1345 * - decoding: unused
1347 int intra_quant_bias;
1348 #define FF_DEFAULT_QUANT_BIAS 999999
1351 * inter quantizer bias.
1352 * - encoding: set by user.
1353 * - decoding: unused
1355 int inter_quant_bias;
1359 * - encoding: unused.
1360 * - decoding: which clrtable should be used for 8bit RGB images
1361 * table have to be stored somewhere FIXME
1366 * internal_buffer count.
1367 * Dont touch, used by lavc default_get_buffer()
1369 int internal_buffer_count;
1373 * Dont touch, used by lavc default_get_buffer()
1375 void *internal_buffer;
1377 #define FF_LAMBDA_SHIFT 7
1378 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1379 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1380 #define FF_LAMBDA_MAX (256*128-1)
1382 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1384 * global quality for codecs which cannot change it per frame.
1385 * this should be proportional to MPEG1/2/4 qscale.
1386 * - encoding: set by user.
1387 * - decoding: unused
1391 #define FF_CODER_TYPE_VLC 0
1392 #define FF_CODER_TYPE_AC 1
1395 * - encoding: set by user.
1396 * - decoding: unused
1402 * - encoding: set by user.
1403 * - decoding: unused
1409 * - encoding: unused
1410 * - decoding: set by user.
1413 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1414 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1415 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1418 * XVideo Motion Acceleration
1419 * - encoding: forbidden
1420 * - decoding: set by decoder
1422 int xvmc_acceleration;
1425 * macroblock decision mode
1426 * - encoding: set by user.
1427 * - decoding: unused
1430 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1431 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1432 #define FF_MB_DECISION_RD 2 ///< rate distoration
1435 * custom intra quantization matrix
1436 * - encoding: set by user, can be NULL
1437 * - decoding: set by lavc
1439 uint16_t *intra_matrix;
1442 * custom inter quantization matrix
1443 * - encoding: set by user, can be NULL
1444 * - decoding: set by lavc
1446 uint16_t *inter_matrix;
1449 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1450 * this is used to workaround some encoder bugs
1451 * - encoding: unused
1452 * - decoding: set by user, will be converted to upper case by lavc during init
1454 unsigned int stream_codec_tag;
1457 * scene change detection threshold.
1458 * 0 is default, larger means fewer detected scene changes
1459 * - encoding: set by user.
1460 * - decoding: unused
1462 int scenechange_threshold;
1465 * minimum lagrange multipler
1466 * - encoding: set by user.
1467 * - decoding: unused
1472 * maximum lagrange multipler
1473 * - encoding: set by user.
1474 * - decoding: unused
1479 * Palette control structure
1480 * - encoding: ??? (no palette-enabled encoder yet)
1481 * - decoding: set by user.
1483 struct AVPaletteControl *palctrl;
1486 * noise reduction strength
1487 * - encoding: set by user.
1488 * - decoding: unused
1490 int noise_reduction;
1493 * called at the beginning of a frame to get cr buffer for it.
1494 * buffer type (size, hints) must be the same. lavc won't check it.
1495 * lavc will pass previous buffer in pic, function should return
1496 * same buffer or new buffer with old frame "painted" into it.
1497 * if pic.data[0] == NULL must behave like get_buffer().
1498 * - encoding: unused
1499 * - decoding: set by lavc, user can override
1501 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1504 * number of bits which should be loaded into the rc buffer before decoding starts
1505 * - encoding: set by user.
1506 * - decoding: unused
1508 int rc_initial_buffer_occupancy;
1512 * - encoding: set by user.
1513 * - decoding: unused
1515 int inter_threshold;
1519 * - encoding: set by user.
1520 * - decoding: set by user.
1525 * simulates errors in the bitstream to test error concealment.
1526 * - encoding: set by user.
1527 * - decoding: unused.
1532 * MP3 antialias algorithm, see FF_AA_* below.
1533 * - encoding: unused
1534 * - decoding: set by user
1537 #define FF_AA_AUTO 0
1538 #define FF_AA_FASTINT 1 //not implemented yet
1540 #define FF_AA_FLOAT 3
1542 * Quantizer noise shaping.
1543 * - encoding: set by user
1544 * - decoding: unused
1546 int quantizer_noise_shaping;
1550 * is used to decide how many independant tasks should be passed to execute()
1551 * - encoding: set by user
1552 * - decoding: set by user
1557 * the codec may call this to execute several independant things. it will return only after
1558 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1559 * default implementation will execute the parts serially
1560 * @param count the number of things to execute
1561 * - encoding: set by lavc, user can override
1562 * - decoding: set by lavc, user can override
1564 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1568 * can be used by execute() to store some per AVCodecContext stuff.
1569 * - encoding: set by execute()
1570 * - decoding: set by execute()
1572 void *thread_opaque;
1575 * Motion estimation threshold. under which no motion estimation is
1576 * performed, but instead the user specified motion vectors are used
1578 * - encoding: set by user
1579 * - decoding: unused
1584 * Macroblock threshold. under which the user specified macroblock types will be used
1585 * - encoding: set by user
1586 * - decoding: unused
1592 * - encoding: set by user
1593 * - decoding: unused
1595 int intra_dc_precision;
1602 typedef struct AVOption {
1603 /** options' name */
1604 const char *name; /* if name is NULL, it indicates a link to next */
1605 /** short English text help or const struct AVOption* subpointer */
1606 const char *help; // const struct AVOption* sub;
1607 /** offset to context structure where the parsed value should be stored */
1609 /** options' type */
1611 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1612 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1613 #define FF_OPT_TYPE_INT 3 ///< integer
1614 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1615 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1616 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1617 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1618 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1619 /** min value (min == max -> no limits) */
1621 /** maximum value for double/int */
1623 /** default boo [0,1]l/double/int value */
1626 * default string value (with optional semicolon delimited extra option-list
1627 * i.e. option1;option2;option3
1628 * defval might select other then first argument as default
1631 #define FF_OPT_MAX_DEPTH 10
1635 * Parse option(s) and sets fields in passed structure
1636 * @param strct structure where the parsed results will be written
1637 * @param list list with AVOptions
1638 * @param opts string with options for parsing
1640 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1646 typedef struct AVCodec {
1648 enum CodecType type;
1651 int (*init)(AVCodecContext *);
1652 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1653 int (*close)(AVCodecContext *);
1654 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1655 uint8_t *buf, int buf_size);
1657 const AVOption *options;
1658 struct AVCodec *next;
1659 void (*flush)(AVCodecContext *);
1660 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1661 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1665 * four components are given, that's all.
1666 * the last component is alpha
1668 typedef struct AVPicture {
1670 int linesize[4]; ///< number of bytes per line
1675 * This structure defines a method for communicating palette changes
1676 * between and demuxer and a decoder.
1678 #define AVPALETTE_SIZE 1024
1679 #define AVPALETTE_COUNT 256
1680 typedef struct AVPaletteControl {
1682 /* demuxer sets this to 1 to indicate the palette has changed;
1683 * decoder resets to 0 */
1684 int palette_changed;
1686 /* 4-byte ARGB palette entries, stored in native byte order; note that
1687 * the individual palette components should be on a 8-bit scale; if
1688 * the palette data comes from a IBM VGA native format, the component
1689 * data is probably 6 bits in size and needs to be scaled */
1690 unsigned int palette[AVPALETTE_COUNT];
1694 extern AVCodec ac3_encoder;
1695 extern AVCodec mp2_encoder;
1696 extern AVCodec mp3lame_encoder;
1697 extern AVCodec oggvorbis_encoder;
1698 extern AVCodec faac_encoder;
1699 extern AVCodec mpeg1video_encoder;
1700 extern AVCodec mpeg2video_encoder;
1701 extern AVCodec h263_encoder;
1702 extern AVCodec h263p_encoder;
1703 extern AVCodec flv_encoder;
1704 extern AVCodec rv10_encoder;
1705 extern AVCodec rv20_encoder;
1706 extern AVCodec dvvideo_encoder;
1707 extern AVCodec mjpeg_encoder;
1708 extern AVCodec ljpeg_encoder;
1709 extern AVCodec mpeg4_encoder;
1710 extern AVCodec msmpeg4v1_encoder;
1711 extern AVCodec msmpeg4v2_encoder;
1712 extern AVCodec msmpeg4v3_encoder;
1713 extern AVCodec wmv1_encoder;
1714 extern AVCodec wmv2_encoder;
1715 extern AVCodec huffyuv_encoder;
1716 extern AVCodec h264_encoder;
1717 extern AVCodec asv1_encoder;
1718 extern AVCodec asv2_encoder;
1719 extern AVCodec vcr1_encoder;
1720 extern AVCodec ffv1_encoder;
1721 extern AVCodec mdec_encoder;
1722 extern AVCodec zlib_encoder;
1723 extern AVCodec svq1_encoder;
1725 extern AVCodec h263_decoder;
1726 extern AVCodec mpeg4_decoder;
1727 extern AVCodec msmpeg4v1_decoder;
1728 extern AVCodec msmpeg4v2_decoder;
1729 extern AVCodec msmpeg4v3_decoder;
1730 extern AVCodec wmv1_decoder;
1731 extern AVCodec wmv2_decoder;
1732 extern AVCodec mpeg1video_decoder;
1733 extern AVCodec mpeg2video_decoder;
1734 extern AVCodec mpegvideo_decoder;
1735 extern AVCodec mpeg_xvmc_decoder;
1736 extern AVCodec h263i_decoder;
1737 extern AVCodec flv_decoder;
1738 extern AVCodec rv10_decoder;
1739 extern AVCodec rv20_decoder;
1740 extern AVCodec svq1_decoder;
1741 extern AVCodec svq3_decoder;
1742 extern AVCodec dvvideo_decoder;
1743 extern AVCodec wmav1_decoder;
1744 extern AVCodec wmav2_decoder;
1745 extern AVCodec mjpeg_decoder;
1746 extern AVCodec mjpegb_decoder;
1747 extern AVCodec sp5x_decoder;
1748 extern AVCodec mp2_decoder;
1749 extern AVCodec mp3_decoder;
1750 extern AVCodec mace3_decoder;
1751 extern AVCodec mace6_decoder;
1752 extern AVCodec huffyuv_decoder;
1753 extern AVCodec oggvorbis_decoder;
1754 extern AVCodec cyuv_decoder;
1755 extern AVCodec h264_decoder;
1756 extern AVCodec indeo3_decoder;
1757 extern AVCodec vp3_decoder;
1758 extern AVCodec theora_decoder;
1759 extern AVCodec amr_nb_decoder;
1760 extern AVCodec amr_nb_encoder;
1761 extern AVCodec amr_wb_encoder;
1762 extern AVCodec amr_wb_decoder;
1763 extern AVCodec aac_decoder;
1764 extern AVCodec mpeg4aac_decoder;
1765 extern AVCodec asv1_decoder;
1766 extern AVCodec asv2_decoder;
1767 extern AVCodec vcr1_decoder;
1768 extern AVCodec cljr_decoder;
1769 extern AVCodec ffv1_decoder;
1770 extern AVCodec fourxm_decoder;
1771 extern AVCodec mdec_decoder;
1772 extern AVCodec roq_decoder;
1773 extern AVCodec interplay_video_decoder;
1774 extern AVCodec xan_wc3_decoder;
1775 extern AVCodec rpza_decoder;
1776 extern AVCodec cinepak_decoder;
1777 extern AVCodec msrle_decoder;
1778 extern AVCodec msvideo1_decoder;
1779 extern AVCodec vqa_decoder;
1780 extern AVCodec idcin_decoder;
1781 extern AVCodec eightbps_decoder;
1782 extern AVCodec smc_decoder;
1783 extern AVCodec flic_decoder;
1784 extern AVCodec vmdvideo_decoder;
1785 extern AVCodec vmdaudio_decoder;
1786 extern AVCodec truemotion1_decoder;
1787 extern AVCodec mszh_decoder;
1788 extern AVCodec zlib_decoder;
1789 extern AVCodec ra_144_decoder;
1790 extern AVCodec ra_288_decoder;
1791 extern AVCodec roq_dpcm_decoder;
1792 extern AVCodec interplay_dpcm_decoder;
1793 extern AVCodec xan_dpcm_decoder;
1794 extern AVCodec qtrle_decoder;
1795 extern AVCodec flac_decoder;
1798 #define PCM_CODEC(id, name) \
1799 extern AVCodec name ## _decoder; \
1800 extern AVCodec name ## _encoder
1802 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1803 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1804 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1805 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1806 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1807 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1808 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1809 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1813 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1814 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1815 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1816 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1817 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1818 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1819 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1820 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1821 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1822 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1823 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1824 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1828 /* dummy raw video codec */
1829 extern AVCodec rawvideo_encoder;
1830 extern AVCodec rawvideo_decoder;
1832 /* the following codecs use external GPL libs */
1833 extern AVCodec ac3_decoder;
1837 struct ReSampleContext;
1839 typedef struct ReSampleContext ReSampleContext;
1841 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1842 int output_rate, int input_rate);
1843 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1844 void audio_resample_close(ReSampleContext *s);
1846 /* YUV420 format is assumed ! */
1848 struct ImgReSampleContext;
1850 typedef struct ImgReSampleContext ImgReSampleContext;
1852 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1853 int input_width, int input_height);
1855 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1856 int iwidth, int iheight,
1857 int topBand, int bottomBand,
1858 int leftBand, int rightBand,
1859 int padtop, int padbottom,
1860 int padleft, int padright);
1863 void img_resample(ImgReSampleContext *s,
1864 AVPicture *output, const AVPicture *input);
1866 void img_resample_close(ImgReSampleContext *s);
1869 * Allocate memory for a picture. Call avpicture_free to free it.
1871 * @param picture the picture to be filled in.
1872 * @param pix_fmt the format of the picture.
1873 * @param width the width of the picture.
1874 * @param height the height of the picture.
1875 * @return 0 if successful, -1 if not.
1877 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1879 /* Free a picture previously allocated by avpicture_alloc. */
1880 void avpicture_free(AVPicture *picture);
1882 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1883 int pix_fmt, int width, int height);
1884 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1885 unsigned char *dest, int dest_size);
1886 int avpicture_get_size(int pix_fmt, int width, int height);
1887 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1888 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1889 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1891 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1892 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1893 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1894 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1895 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1896 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1898 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1900 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1901 int has_alpha, int *loss_ptr);
1903 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1904 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1905 int img_get_alpha_info(const AVPicture *src,
1906 int pix_fmt, int width, int height);
1908 /* convert among pixel formats */
1909 int img_convert(AVPicture *dst, int dst_pix_fmt,
1910 const AVPicture *src, int pix_fmt,
1911 int width, int height);
1913 /* deinterlace a picture */
1914 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1915 int pix_fmt, int width, int height);
1917 /* external high level API */
1919 extern AVCodec *first_avcodec;
1921 /* returns LIBAVCODEC_VERSION_INT constant */
1922 unsigned avcodec_version(void);
1923 /* returns LIBAVCODEC_BUILD constant */
1924 unsigned avcodec_build(void);
1925 void avcodec_init(void);
1927 void register_avcodec(AVCodec *format);
1928 AVCodec *avcodec_find_encoder(enum CodecID id);
1929 AVCodec *avcodec_find_encoder_by_name(const char *name);
1930 AVCodec *avcodec_find_decoder(enum CodecID id);
1931 AVCodec *avcodec_find_decoder_by_name(const char *name);
1932 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1934 void avcodec_get_context_defaults(AVCodecContext *s);
1935 AVCodecContext *avcodec_alloc_context(void);
1936 void avcodec_get_frame_defaults(AVFrame *pic);
1937 AVFrame *avcodec_alloc_frame(void);
1939 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1940 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1942 int avcodec_thread_init(AVCodecContext *s, int thread_count);
1943 void avcodec_thread_free(AVCodecContext *s);
1944 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1945 //FIXME func typedef
1948 * opens / inits the AVCodecContext.
1951 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1953 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1954 int *frame_size_ptr,
1955 uint8_t *buf, int buf_size);
1956 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1957 int *got_picture_ptr,
1958 uint8_t *buf, int buf_size);
1959 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1961 uint8_t *buf, int buf_size);
1962 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1963 const short *samples);
1964 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1965 const AVFrame *pict);
1967 int avcodec_close(AVCodecContext *avctx);
1969 void avcodec_register_all(void);
1971 void avcodec_flush_buffers(AVCodecContext *avctx);
1973 /* misc usefull functions */
1976 * returns a single letter to describe the picture type
1978 char av_get_pict_type_char(int pict_type);
1981 * reduce a fraction.
1982 * this is usefull for framerate calculations
1983 * @param max the maximum allowed for dst_nom & dst_den
1984 * @return 1 if exact, 0 otherwise
1986 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1989 * rescale a 64bit integer.
1990 * a simple a*b/c isnt possible as it can overflow
1992 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
1996 * Interface for 0.5.0 version
1998 * do not even think about it's usage for this moment
2002 /// compressed size used from given memory buffer
2004 /// I/P/B frame type
2010 * order can't be changed - once it was defined
2014 AVC_OPEN_BY_NAME = 0xACA000,
2015 AVC_OPEN_BY_CODEC_ID,
2020 // pin - struct { uint8_t* src, uint_t src_size }
2021 // pout - struct { AVPicture* img, consumed_bytes,
2023 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2024 // pout - uint_t used_from_dest_size
2027 // query/get video commands
2028 AVC_GET_VERSION = 0xACB000,
2032 AVC_GET_QUANT_TABLE,
2035 // query/get audio commands
2036 AVC_GET_FRAME_SIZE = 0xABC000,
2038 // maybe define some simple structure which
2039 // might be passed to the user - but they can't
2040 // contain any codec specific parts and these
2041 // calls are usualy necessary only few times
2043 // set video commands
2044 AVC_SET_WIDTH = 0xACD000,
2047 // set video encoding commands
2048 AVC_SET_FRAME_RATE = 0xACD800,
2052 // set audio commands
2053 AVC_SET_SAMPLE_RATE = 0xACE000,
2059 * \param handle allocated private structure by libavcodec
2060 * for initialization pass NULL - will be returned pout
2061 * user is supposed to know nothing about its structure
2062 * \param cmd type of operation to be performed
2063 * \param pint input parameter
2064 * \param pout output parameter
2066 * \returns command status - eventually for query command it might return
2067 * integer resulting value
2069 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2072 typedef struct AVCodecParserContext {
2074 struct AVCodecParser *parser;
2075 int64_t frame_offset; /* offset of the current frame */
2076 int64_t cur_offset; /* current offset
2077 (incremented by each av_parser_parse()) */
2078 int64_t last_frame_offset; /* offset of the last frame */
2080 int pict_type; /* XXX: put it back in AVCodecContext */
2081 int repeat_pict; /* XXX: put it back in AVCodecContext */
2082 int64_t pts; /* pts of the current frame */
2083 int64_t dts; /* dts of the current frame */
2089 #define AV_PARSER_PTS_NB 4
2090 int cur_frame_start_index;
2091 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2092 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2093 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2094 } AVCodecParserContext;
2096 typedef struct AVCodecParser {
2097 int codec_ids[3]; /* several codec IDs are permitted */
2099 int (*parser_init)(AVCodecParserContext *s);
2100 int (*parser_parse)(AVCodecParserContext *s,
2101 AVCodecContext *avctx,
2102 uint8_t **poutbuf, int *poutbuf_size,
2103 const uint8_t *buf, int buf_size);
2104 void (*parser_close)(AVCodecParserContext *s);
2105 struct AVCodecParser *next;
2108 extern AVCodecParser *av_first_parser;
2110 void av_register_codec_parser(AVCodecParser *parser);
2111 AVCodecParserContext *av_parser_init(int codec_id);
2112 int av_parser_parse(AVCodecParserContext *s,
2113 AVCodecContext *avctx,
2114 uint8_t **poutbuf, int *poutbuf_size,
2115 const uint8_t *buf, int buf_size,
2116 int64_t pts, int64_t dts);
2117 void av_parser_close(AVCodecParserContext *s);
2119 extern AVCodecParser mpegvideo_parser;
2120 extern AVCodecParser mpeg4video_parser;
2121 extern AVCodecParser h263_parser;
2122 extern AVCodecParser h264_parser;
2123 extern AVCodecParser mpegaudio_parser;
2124 extern AVCodecParser ac3_parser;
2127 void *av_malloc(unsigned int size);
2128 void *av_mallocz(unsigned int size);
2129 void *av_realloc(void *ptr, unsigned int size);
2130 void av_free(void *ptr);
2131 char *av_strdup(const char *s);
2132 void av_freep(void *ptr);
2133 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2134 /* for static data only */
2135 /* call av_free_static to release all staticaly allocated tables */
2136 void av_free_static(void);
2137 void *av_mallocz_static(unsigned int size);
2139 /* add by bero : in adx.c */
2140 int is_adx(const unsigned char *buf,size_t bufsize);
2142 void img_copy(AVPicture *dst, const AVPicture *src,
2143 int pix_fmt, int width, int height);
2149 #define AV_LOG_QUIET -1
2150 #define AV_LOG_ERROR 0
2151 #define AV_LOG_INFO 1
2152 #define AV_LOG_DEBUG 2
2154 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2155 extern void av_vlog(void*, int level, const char *fmt, va_list);
2156 extern int av_log_get_level(void);
2157 extern void av_log_set_level(int);
2158 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2161 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2162 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2163 (((uint8_t*)(x))[1] << 16) | \
2164 (((uint8_t*)(x))[2] << 8) | \
2166 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2167 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2168 (((uint8_t*)(x))[2] << 16) | \
2169 (((uint8_t*)(x))[1] << 8) | \
2176 #endif /* AVCODEC_H */