16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "0.4.9-pre1"
20 #define LIBAVCODEC_BUILD 4732
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,
42 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
83 CODEC_ID_INTERPLAY_VIDEO,
110 /* various pcm "codecs" */
120 /* various adpcm codecs */
121 CODEC_ID_ADPCM_IMA_QT,
122 CODEC_ID_ADPCM_IMA_WAV,
123 CODEC_ID_ADPCM_IMA_DK3,
124 CODEC_ID_ADPCM_IMA_DK4,
125 CODEC_ID_ADPCM_IMA_WS,
126 CODEC_ID_ADPCM_IMA_SMJPEG,
139 /* RealAudio codecs*/
143 /* various DPCM codecs */
145 CODEC_ID_INTERPLAY_DPCM,
151 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
152 stream (only used by libavformat) */
165 /* CODEC_ID_MP3LAME is absolete */
166 #define CODEC_ID_MP3LAME CODEC_ID_MP3
169 CODEC_TYPE_UNKNOWN = -1,
176 * Pixel format. Notes:
178 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
179 * color is put together as:
180 * (A << 24) | (R << 16) | (G << 8) | B
181 * This is stored as BGRA on little endian CPU architectures and ARGB on
184 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
185 * image data is stored in AVFrame.data[0]. The palette is transported in
186 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
187 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
188 * also endian-specific). Note also that the individual RGB palette
189 * components stored in AVFrame.data[1] should be in the range 0..255.
190 * This is important as many custom PAL8 video codecs that were designed
191 * to run on the IBM VGA graphics adapter use 6-bit palette components.
194 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
195 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
196 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
197 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
198 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
199 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
200 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
201 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
202 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
203 PIX_FMT_RGB565, ///< always stored in cpu endianness
204 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
206 PIX_FMT_MONOWHITE, ///< 0 is white
207 PIX_FMT_MONOBLACK, ///< 0 is black
208 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
209 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
210 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
211 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
212 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
213 PIX_FMT_XVMC_MPEG2_IDCT,
214 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
215 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
219 /* currently unused, may be used if 24/32 bits samples ever supported */
221 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
225 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
228 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
229 * this is mainly needed because some optimized bitstream readers read
230 * 32 or 64 bit at once and could read over the end<br>
231 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
232 * MPEG bitstreams could cause overread and segfault
234 #define FF_INPUT_BUFFER_PADDING_SIZE 8
236 /* motion estimation type, EPZS by default */
247 AV_ROUND_ZERO = 0, ///< round toward zero
248 AV_ROUND_INF = 1, ///< round away from zero
249 AV_ROUND_DOWN = 2, ///< round toward -infinity
250 AV_ROUND_UP = 3, ///< round toward +infinity
251 AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from zero
254 typedef struct RcOverride{
257 int qscale; // if this is 0 then quality_factor will be used instead
258 float quality_factor;
261 /* only for ME compatiblity with old apps */
262 extern int motion_estimation_method;
264 #define FF_MAX_B_FRAMES 8
267 these flags can be passed in AVCodecContext.flags before initing
268 Note: note not everything is supported yet
271 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
272 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
273 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
274 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
275 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
276 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
277 /* parent program gurantees that the input for b-frame containing streams is not written to
278 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
279 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
280 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
281 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
282 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
283 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
284 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
285 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
286 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
287 of only at frame boundaries */
288 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
289 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
290 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
291 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
292 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
293 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
294 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
295 /* Fx : Flag for h263+ extra options */
296 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
297 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
298 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
299 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
300 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
301 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
302 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
303 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
304 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
305 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
306 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
307 #define CODEC_FLAG_CLOSED_GOP 0x80000000
308 #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
309 #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
311 /* Unsupported options :
312 * Syntax Arithmetic coding (SAC)
313 * Reference Picture Selection
314 * Independant Segment Decoding */
316 /* codec capabilities */
318 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
320 * Codec uses get_buffer() for allocating buffers.
321 * direct rendering method 1
323 #define CODEC_CAP_DR1 0x0002
324 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
326 #define CODEC_CAP_PARSE_ONLY 0x0004
327 #define CODEC_CAP_TRUNCATED 0x0008
328 /* codec can export data for HW decoding (XvMC) */
329 #define CODEC_CAP_HWACCEL 0x0010
330 /** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
331 #define CODEC_CAP_DELAY 0x0020
333 //the following defines might change, so dont expect compatibility if u use them
334 #define MB_TYPE_INTRA4x4 0x0001
335 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
336 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
337 #define MB_TYPE_16x16 0x0008
338 #define MB_TYPE_16x8 0x0010
339 #define MB_TYPE_8x16 0x0020
340 #define MB_TYPE_8x8 0x0040
341 #define MB_TYPE_INTERLACED 0x0080
342 #define MB_TYPE_DIRECT2 0x0100 //FIXME
343 #define MB_TYPE_ACPRED 0x0200
344 #define MB_TYPE_GMC 0x0400
345 #define MB_TYPE_SKIP 0x0800
346 #define MB_TYPE_P0L0 0x1000
347 #define MB_TYPE_P1L0 0x2000
348 #define MB_TYPE_P0L1 0x4000
349 #define MB_TYPE_P1L1 0x8000
350 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
351 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
352 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
353 #define MB_TYPE_QUANT 0x00010000
354 #define MB_TYPE_CBP 0x00020000
355 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
359 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
361 typedef struct AVPanScan{
364 * - encoding: set by user.
365 * - decoding: set by lavc
370 * width and height in 1/16 pel
371 * - encoding: set by user.
372 * - decoding: set by lavc
378 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
379 * - encoding: set by user.
380 * - decoding: set by lavc
382 int16_t position[3][2];
385 #define FF_COMMON_FRAME \
387 * pointer to the picture planes.\
388 * this might be different from the first allocated byte\
395 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
396 * this isnt used by lavc unless the default get/release_buffer() is used\
402 * 1 -> keyframe, 0-> not\
403 * - encoding: set by lavc\
404 * - decoding: set by lavc\
409 * picture type of the frame, see ?_TYPE below.\
410 * - encoding: set by lavc for coded_picture (and set by user for input)\
411 * - decoding: set by lavc\
416 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
417 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
418 * - encoding: MUST be set by user\
419 * - decoding: set by lavc\
424 * picture number in bitstream order.\
425 * - encoding: set by\
426 * - decoding: set by lavc\
428 int coded_picture_number;\
430 * picture number in display order.\
431 * - encoding: set by\
432 * - decoding: set by lavc\
434 int display_picture_number;\
437 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
438 * - encoding: set by lavc for coded_picture (and set by user for input)\
439 * - decoding: set by lavc\
444 * buffer age (1->was last buffer and dint change, 2->..., ...).\
445 * set to INT_MAX if the buffer has not been used yet \
446 * - encoding: unused\
447 * - decoding: MUST be set by get_buffer()\
452 * is this picture used as reference\
453 * - encoding: unused\
454 * - decoding: set by lavc (before get_buffer() call))\
460 * - encoding: unused\
461 * - decoding: set by lavc\
463 int8_t *qscale_table;\
466 * - encoding: unused\
467 * - decoding: set by lavc\
472 * mbskip_table[mb]>=1 if MB didnt change\
473 * stride= mb_width = (width+15)>>4\
474 * - encoding: unused\
475 * - decoding: set by lavc\
477 uint8_t *mbskip_table;\
480 * Motion vector table\
481 * - encoding: set by user\
482 * - decoding: set by lavc\
484 int16_t (*motion_val[2])[2];\
487 * Macroblock type table\
488 * mb_type_base + mb_width + 2\
489 * - encoding: set by user\
490 * - decoding: set by lavc\
495 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
496 * - encoding: unused\
497 * - decoding: set by lavc\
499 uint8_t motion_subsample_log2;\
502 * for some private data of the user\
503 * - encoding: unused\
504 * - decoding: set by user\
510 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
511 * - decoding: unused\
516 * type of the buffer (to keep track of who has to dealloc data[*])\
517 * - encoding: set by the one who allocs it\
518 * - decoding: set by the one who allocs it\
519 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
524 * when decoding, this signal how much the picture must be delayed.\
525 * extra_delay = repeat_pict / (2*fps)\
526 * - encoding: unused\
527 * - decoding: set by lavc\
537 * The content of the picture is interlaced.\
538 * - encoding: set by user\
539 * - decoding: set by lavc (default 0)\
541 int interlaced_frame;\
544 * if the content is interlaced, is top field displayed first.\
545 * - encoding: set by user\
546 * - decoding: set by lavc\
548 int top_field_first;\
552 * - encoding: set by user\
553 * - decoding: set by lavc\
555 AVPanScan *pan_scan;\
558 * tell user application that palette has changed from previous frame.\
559 * - encoding: ??? (no palette-enabled encoder yet)\
560 * - decoding: set by lavc (default 0)\
562 int palette_has_changed;\
565 * Codec suggestion on buffer type if != 0\
566 * - encoding: unused\
567 * - decoding: set by lavc (before get_buffer() call))\
573 * - encoding: unused\
574 * - decoding: set by lavc\
579 * Motion referece frame index\
580 * - encoding: set by user\
581 * - decoding: set by lavc\
583 int8_t *ref_index[2];
585 #define FF_QSCALE_TYPE_MPEG1 0
586 #define FF_QSCALE_TYPE_MPEG2 1
588 #define FF_BUFFER_TYPE_INTERNAL 1
589 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
590 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
591 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
594 #define FF_I_TYPE 1 // Intra
595 #define FF_P_TYPE 2 // Predicted
596 #define FF_B_TYPE 3 // Bi-dir predicted
597 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
601 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
602 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
603 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
604 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
609 typedef struct AVFrame {
613 #define DEFAULT_FRAME_RATE_BASE 1001000
618 typedef struct AVCLASS AVClass;
620 const char* class_name;
621 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
622 or AVFormatContext, which begin with an AVClass.
623 Needed because av_log is in libavcodec and has no visibility
624 of AVIn/OutputFormat */
628 * main external api structure.
630 typedef struct AVCodecContext {
632 * Info on struct for av_log
633 * - set by avcodec_alloc_context
637 * the average bitrate.
638 * - encoding: set by user. unused for constant quantizer encoding
639 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
644 * number of bits the bitstream is allowed to diverge from the reference.
645 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
646 * - encoding: set by user. unused for constant quantizer encoding
649 int bit_rate_tolerance;
653 * - encoding: set by user.
654 * - decoding: set by user.
659 * some codecs needs additionnal format info. It is stored here
660 * - encoding: set by user.
661 * - decoding: set by lavc. (FIXME is this ok?)
666 * motion estimation algorithm used for video coding.
667 * - encoding: MUST be set by user.
673 * some codecs need / can use extra-data like huffman tables.
674 * mjpeg: huffman tables
675 * rv10: additional flags
676 * mpeg4: global headers (they can be in the bitstream or here)
677 * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
678 * then extradata_size to avoid prolems if its read with the bitstream reader
679 * - encoding: set/allocated/freed by lavc.
680 * - decoding: set/allocated/freed by user.
687 * frames per sec multiplied by frame_rate_base.
688 * for variable fps this is the precission, so if the timestamps
689 * can be specified in msec precssion then this is 1000*frame_rate_base
690 * - encoding: MUST be set by user
691 * - decoding: set by lavc. 0 or the frame_rate if available
696 * picture width / height.
697 * - encoding: MUST be set by user.
698 * - decoding: set by lavc.
699 * Note, for compatibility its possible to set this instead of
700 * coded_width/height before decoding
704 #define FF_ASPECT_EXTENDED 15
707 * the number of pictures in a group of pitures, or 0 for intra_only.
708 * - encoding: set by user.
714 * pixel format, see PIX_FMT_xxx.
715 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
716 * conversion is in order. This only works for
717 * codecs with one supported pix_fmt, we should
718 * do something for a generic case as well.
719 * - decoding: set by lavc.
721 enum PixelFormat pix_fmt;
724 * Frame rate emulation. If not zero lower layer (i.e. format handler)
725 * has to read frames at native frame rate.
726 * - encoding: set by user.
727 * - decoding: unused.
732 * if non NULL, 'draw_horiz_band' is called by the libavcodec
733 * decoder to draw an horizontal band. It improve cache usage. Not
734 * all codecs can do that. You must check the codec capabilities
737 * - decoding: set by user.
738 * @param height the height of the slice
739 * @param y the y position of the slice
740 * @param type 1->top field, 2->bottom field, 3->frame
741 * @param offset offset into the AVFrame.data from which the slice should be read
743 void (*draw_horiz_band)(struct AVCodecContext *s,
744 const AVFrame *src, int offset[4],
745 int y, int type, int height);
748 int sample_rate; ///< samples per sec
750 int sample_fmt; ///< sample format, currenly unused
752 /* the following data should not be initialized */
753 int frame_size; ///< in samples, initialized when calling 'init'
754 int frame_number; ///< audio or video frame number
755 int real_pict_num; ///< returns the real picture number of previous encoded frame
758 * number of frames the decoded output will be delayed relative to
760 * - encoding: set by lavc.
765 /* - encoding parameters */
766 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
767 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
771 * - encoding: set by user.
778 * - encoding: set by user.
784 * maximum quantizer difference etween frames.
785 * - encoding: set by user.
791 * maximum number of b frames between non b frames.
792 * note: the output will be delayed by max_b_frames+1 relative to the input
793 * - encoding: set by user.
799 * qscale factor between ip and b frames.
800 * - encoding: set by user.
803 float b_quant_factor;
805 /** obsolete FIXME remove */
807 int b_frame_strategy;
812 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
816 struct AVCodec *codec;
820 /* unused, FIXME remove*/
823 int rtp_payload_size; /* The size of the RTP payload, the coder will */
824 /* do it's best to deliver a chunk with size */
825 /* below rtp_payload_size, the chunk will start */
826 /* with a start code on some codecs like H.263 */
827 /* This doesn't take account of any particular */
828 /* headers inside the transmited RTP payload */
831 /* The RTP callcack: This function is called */
832 /* every time the encoder as a packet to send */
833 /* Depends on the encoder if the data starts */
834 /* with a Start Code (it should) H.263 does */
835 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
837 /* statistics, used for 2-pass encoding */
848 * number of bits used for the previously encoded frame.
849 * - encoding: set by lavc
855 * private data of the user, can be used to carry app specific stuff.
856 * - encoding: set by user
857 * - decoding: set by user
862 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
863 enum CodecID codec_id; /* see CODEC_ID_xxx */
866 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
867 * this is used to workaround some encoder bugs
868 * - encoding: set by user, if not then the default based on codec_id will be used
869 * - decoding: set by user, will be converted to upper case by lavc during init
871 unsigned int codec_tag;
874 * workaround bugs in encoders which sometimes cannot be detected automatically.
876 * - decoding: set by user
879 #define FF_BUG_AUTODETECT 1 ///< autodetection
880 #define FF_BUG_OLD_MSMPEG4 2
881 #define FF_BUG_XVID_ILACE 4
882 #define FF_BUG_UMP4 8
883 #define FF_BUG_NO_PADDING 16
884 #define FF_BUG_AMV 32
885 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
886 #define FF_BUG_QPEL_CHROMA 64
887 #define FF_BUG_STD_QPEL 128
888 #define FF_BUG_QPEL_CHROMA2 256
889 #define FF_BUG_DIRECT_BLOCKSIZE 512
890 #define FF_BUG_EDGE 1024
891 #define FF_BUG_HPEL_CHROMA 2048
892 #define FF_BUG_DC_CLIP 4096
893 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
896 * luma single coeff elimination threshold.
897 * - encoding: set by user
900 int luma_elim_threshold;
903 * chroma single coeff elimination threshold.
904 * - encoding: set by user
907 int chroma_elim_threshold;
910 * strictly follow the std (MPEG4, ...).
911 * - encoding: set by user
914 int strict_std_compliance;
917 * qscale offset between ip and b frames.
918 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
919 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
920 * - encoding: set by user.
923 float b_quant_offset;
926 * error resilience higher values will detect more errors but may missdetect
927 * some more or less valid parts as errors.
929 * - decoding: set by user
931 int error_resilience;
932 #define FF_ER_CAREFULL 1
933 #define FF_ER_COMPLIANT 2
934 #define FF_ER_AGGRESSIVE 3
935 #define FF_ER_VERY_AGGRESSIVE 4
938 * called at the beginning of each frame to get a buffer for it.
939 * if pic.reference is set then the frame will be read later by lavc
940 * avcodec_align_dimensions() should be used to find the required width and
941 * height, as they normally need to be rounded up to the next multiple of 16
943 * - decoding: set by lavc, user can override
945 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
948 * called to release buffers which where allocated with get_buffer.
949 * a released buffer can be reused in get_buffer()
950 * pic.data[*] must be set to NULL
952 * - decoding: set by lavc, user can override
954 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
957 * if 1 the stream has a 1 frame delay during decoding.
958 * - encoding: set by lavc
959 * - decoding: set by lavc
963 int block_align; ///< used by some WAV based audio codecs
965 int parse_only; /* - decoding only: if true, only parsing is done
966 (function avcodec_parse_frame()). The frame
967 data is returned. Only MPEG codecs support this now. */
970 * 0-> h263 quant 1-> mpeg quant.
971 * - encoding: set by user.
977 * pass1 encoding statistics output buffer.
978 * - encoding: set by lavc
984 * pass2 encoding statistics input buffer.
985 * concatenated stuff from stats_out of pass1 should be placed here
986 * - encoding: allocated/set/freed by user
992 * ratecontrol qmin qmax limiting method.
993 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
994 * - encoding: set by user.
1003 * ratecontrol override, see RcOverride.
1004 * - encoding: allocated/set/freed by user.
1005 * - decoding: unused
1007 RcOverride *rc_override;
1008 int rc_override_count;
1011 * rate control equation.
1012 * - encoding: set by user
1013 * - decoding: unused
1019 * - encoding: set by user.
1020 * - decoding: unused
1026 * - encoding: set by user.
1027 * - decoding: unused
1032 * decoder bitstream buffer size.
1033 * - encoding: set by user.
1034 * - decoding: unused
1037 float rc_buffer_aggressivity;
1040 * qscale factor between p and i frames.
1041 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1042 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1043 * - encoding: set by user.
1044 * - decoding: unused
1046 float i_quant_factor;
1049 * qscale offset between p and i frames.
1050 * - encoding: set by user.
1051 * - decoding: unused
1053 float i_quant_offset;
1056 * initial complexity for pass1 ratecontrol.
1057 * - encoding: set by user.
1058 * - decoding: unused
1060 float rc_initial_cplx;
1063 * dct algorithm, see FF_DCT_* below.
1064 * - encoding: set by user
1065 * - decoding: unused
1068 #define FF_DCT_AUTO 0
1069 #define FF_DCT_FASTINT 1
1070 #define FF_DCT_INT 2
1071 #define FF_DCT_MMX 3
1072 #define FF_DCT_MLIB 4
1073 #define FF_DCT_ALTIVEC 5
1074 #define FF_DCT_FAAN 6
1077 * luminance masking (0-> disabled).
1078 * - encoding: set by user
1079 * - decoding: unused
1084 * temporary complexity masking (0-> disabled).
1085 * - encoding: set by user
1086 * - decoding: unused
1088 float temporal_cplx_masking;
1091 * spatial complexity masking (0-> disabled).
1092 * - encoding: set by user
1093 * - decoding: unused
1095 float spatial_cplx_masking;
1098 * p block masking (0-> disabled).
1099 * - encoding: set by user
1100 * - decoding: unused
1105 * darkness masking (0-> disabled).
1106 * - encoding: set by user
1107 * - decoding: unused
1112 /* for binary compatibility */
1116 * idct algorithm, see FF_IDCT_* below.
1117 * - encoding: set by user
1118 * - decoding: set by user
1121 #define FF_IDCT_AUTO 0
1122 #define FF_IDCT_INT 1
1123 #define FF_IDCT_SIMPLE 2
1124 #define FF_IDCT_SIMPLEMMX 3
1125 #define FF_IDCT_LIBMPEG2MMX 4
1126 #define FF_IDCT_PS2 5
1127 #define FF_IDCT_MLIB 6
1128 #define FF_IDCT_ARM 7
1129 #define FF_IDCT_ALTIVEC 8
1130 #define FF_IDCT_SH4 9
1131 #define FF_IDCT_SIMPLEARM 10
1132 #define FF_IDCT_H264 11
1136 * - encoding: set by lavc
1137 * - decoding: set by user (or 0)
1141 * slice offsets in the frame in bytes.
1142 * - encoding: set/allocated by lavc
1143 * - decoding: set/allocated by user (or NULL)
1148 * error concealment flags.
1149 * - encoding: unused
1150 * - decoding: set by user
1152 int error_concealment;
1153 #define FF_EC_GUESS_MVS 1
1154 #define FF_EC_DEBLOCK 2
1157 * dsp_mask could be add used to disable unwanted CPU features
1158 * CPU features (i.e. MMX, SSE. ...)
1160 * with FORCE flag you may instead enable given CPU features
1161 * (Dangerous: usable in case of misdetection, improper usage however will
1162 * result into program crash)
1165 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1166 /* lower 16 bits - CPU features */
1168 #define FF_MM_MMX 0x0001 /* standard MMX */
1169 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1170 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1171 #define FF_MM_SSE 0x0008 /* SSE functions */
1172 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1173 #endif /* HAVE_MMX */
1176 * bits per sample/pixel from the demuxer (needed for huffyuv).
1177 * - encoding: set by lavc
1178 * - decoding: set by user
1180 int bits_per_sample;
1183 * prediction method (needed for huffyuv).
1184 * - encoding: set by user
1185 * - decoding: unused
1187 int prediction_method;
1188 #define FF_PRED_LEFT 0
1189 #define FF_PRED_PLANE 1
1190 #define FF_PRED_MEDIAN 2
1193 * sample aspect ratio (0 if unknown).
1194 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1195 * - encoding: set by user.
1196 * - decoding: set by lavc.
1198 AVRational sample_aspect_ratio;
1201 * the picture in the bitstream.
1202 * - encoding: set by lavc
1203 * - decoding: set by lavc
1205 AVFrame *coded_frame;
1209 * - encoding: set by user.
1210 * - decoding: set by user.
1213 #define FF_DEBUG_PICT_INFO 1
1214 #define FF_DEBUG_RC 2
1215 #define FF_DEBUG_BITSTREAM 4
1216 #define FF_DEBUG_MB_TYPE 8
1217 #define FF_DEBUG_QP 16
1218 #define FF_DEBUG_MV 32
1219 #define FF_DEBUG_DCT_COEFF 0x00000040
1220 #define FF_DEBUG_SKIP 0x00000080
1221 #define FF_DEBUG_STARTCODE 0x00000100
1222 #define FF_DEBUG_PTS 0x00000200
1223 #define FF_DEBUG_ER 0x00000400
1224 #define FF_DEBUG_MMCO 0x00000800
1225 #define FF_DEBUG_BUGS 0x00001000
1226 #define FF_DEBUG_VIS_QP 0x00002000
1227 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1231 * - encoding: set by user.
1232 * - decoding: set by user.
1235 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1236 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1237 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1241 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1242 * - decoding: unused
1247 * minimum MB quantizer.
1248 * - encoding: set by user.
1249 * - decoding: unused
1254 * maximum MB quantizer.
1255 * - encoding: set by user.
1256 * - decoding: unused
1261 * motion estimation compare function.
1262 * - encoding: set by user.
1263 * - decoding: unused
1267 * subpixel motion estimation compare function.
1268 * - encoding: set by user.
1269 * - decoding: unused
1273 * macroblock compare function (not supported yet).
1274 * - encoding: set by user.
1275 * - decoding: unused
1279 * interlaced dct compare function
1280 * - encoding: set by user.
1281 * - decoding: unused
1284 #define FF_CMP_SAD 0
1285 #define FF_CMP_SSE 1
1286 #define FF_CMP_SATD 2
1287 #define FF_CMP_DCT 3
1288 #define FF_CMP_PSNR 4
1289 #define FF_CMP_BIT 5
1291 #define FF_CMP_ZERO 7
1292 #define FF_CMP_VSAD 8
1293 #define FF_CMP_VSSE 9
1294 #define FF_CMP_NSSE 10
1295 #define FF_CMP_W53 11
1296 #define FF_CMP_W97 12
1297 #define FF_CMP_CHROMA 256
1300 * ME diamond size & shape.
1301 * - encoding: set by user.
1302 * - decoding: unused
1307 * amount of previous MV predictors (2a+1 x 2a+1 square).
1308 * - encoding: set by user.
1309 * - decoding: unused
1311 int last_predictor_count;
1314 * pre pass for motion estimation.
1315 * - encoding: set by user.
1316 * - decoding: unused
1321 * motion estimation pre pass compare function.
1322 * - encoding: set by user.
1323 * - decoding: unused
1328 * ME pre pass diamond size & shape.
1329 * - encoding: set by user.
1330 * - decoding: unused
1335 * subpel ME quality.
1336 * - encoding: set by user.
1337 * - decoding: unused
1339 int me_subpel_quality;
1342 * callback to negotiate the pixelFormat.
1343 * @param fmt is the list of formats which are supported by the codec,
1344 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1345 * the first is allways the native one
1346 * @return the choosen format
1347 * - encoding: unused
1348 * - decoding: set by user, if not set then the native format will always be choosen
1350 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1353 * DTG active format information (additionnal aspect ratio
1354 * information only used in DVB MPEG2 transport streams). 0 if
1357 * - encoding: unused.
1358 * - decoding: set by decoder
1360 int dtg_active_format;
1361 #define FF_DTG_AFD_SAME 8
1362 #define FF_DTG_AFD_4_3 9
1363 #define FF_DTG_AFD_16_9 10
1364 #define FF_DTG_AFD_14_9 11
1365 #define FF_DTG_AFD_4_3_SP_14_9 13
1366 #define FF_DTG_AFD_16_9_SP_14_9 14
1367 #define FF_DTG_AFD_SP_4_3 15
1370 * Maximum motion estimation search range in subpel units.
1371 * if 0 then no limit
1373 * - encoding: set by user.
1374 * - decoding: unused.
1380 * for variable fps this is 1
1381 * - encoding: set by user.
1382 * - decoding: set by lavc.
1383 * @todo move this after frame_rate
1386 int frame_rate_base;
1388 * intra quantizer bias.
1389 * - encoding: set by user.
1390 * - decoding: unused
1392 int intra_quant_bias;
1393 #define FF_DEFAULT_QUANT_BIAS 999999
1396 * inter quantizer bias.
1397 * - encoding: set by user.
1398 * - decoding: unused
1400 int inter_quant_bias;
1404 * - encoding: unused.
1405 * - decoding: which clrtable should be used for 8bit RGB images
1406 * table have to be stored somewhere FIXME
1411 * internal_buffer count.
1412 * Dont touch, used by lavc default_get_buffer()
1414 int internal_buffer_count;
1418 * Dont touch, used by lavc default_get_buffer()
1420 void *internal_buffer;
1422 #define FF_LAMBDA_SHIFT 7
1423 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1424 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1425 #define FF_LAMBDA_MAX (256*128-1)
1427 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1429 * global quality for codecs which cannot change it per frame.
1430 * this should be proportional to MPEG1/2/4 qscale.
1431 * - encoding: set by user.
1432 * - decoding: unused
1436 #define FF_CODER_TYPE_VLC 0
1437 #define FF_CODER_TYPE_AC 1
1440 * - encoding: set by user.
1441 * - decoding: unused
1447 * - encoding: set by user.
1448 * - decoding: unused
1454 * - encoding: unused
1455 * - decoding: set by user.
1458 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1459 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1460 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1463 * XVideo Motion Acceleration
1464 * - encoding: forbidden
1465 * - decoding: set by decoder
1467 int xvmc_acceleration;
1470 * macroblock decision mode
1471 * - encoding: set by user.
1472 * - decoding: unused
1475 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1476 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1477 #define FF_MB_DECISION_RD 2 ///< rate distoration
1480 * custom intra quantization matrix
1481 * - encoding: set by user, can be NULL
1482 * - decoding: set by lavc
1484 uint16_t *intra_matrix;
1487 * custom inter quantization matrix
1488 * - encoding: set by user, can be NULL
1489 * - decoding: set by lavc
1491 uint16_t *inter_matrix;
1494 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1495 * this is used to workaround some encoder bugs
1496 * - encoding: unused
1497 * - decoding: set by user, will be converted to upper case by lavc during init
1499 unsigned int stream_codec_tag;
1502 * scene change detection threshold.
1503 * 0 is default, larger means fewer detected scene changes
1504 * - encoding: set by user.
1505 * - decoding: unused
1507 int scenechange_threshold;
1510 * minimum lagrange multipler
1511 * - encoding: set by user.
1512 * - decoding: unused
1517 * maximum lagrange multipler
1518 * - encoding: set by user.
1519 * - decoding: unused
1524 * Palette control structure
1525 * - encoding: ??? (no palette-enabled encoder yet)
1526 * - decoding: set by user.
1528 struct AVPaletteControl *palctrl;
1531 * noise reduction strength
1532 * - encoding: set by user.
1533 * - decoding: unused
1535 int noise_reduction;
1538 * called at the beginning of a frame to get cr buffer for it.
1539 * buffer type (size, hints) must be the same. lavc won't check it.
1540 * lavc will pass previous buffer in pic, function should return
1541 * same buffer or new buffer with old frame "painted" into it.
1542 * if pic.data[0] == NULL must behave like get_buffer().
1543 * - encoding: unused
1544 * - decoding: set by lavc, user can override
1546 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1549 * number of bits which should be loaded into the rc buffer before decoding starts
1550 * - encoding: set by user.
1551 * - decoding: unused
1553 int rc_initial_buffer_occupancy;
1557 * - encoding: set by user.
1558 * - decoding: unused
1560 int inter_threshold;
1564 * - encoding: set by user.
1565 * - decoding: set by user.
1570 * simulates errors in the bitstream to test error concealment.
1571 * - encoding: set by user.
1572 * - decoding: unused.
1577 * MP3 antialias algorithm, see FF_AA_* below.
1578 * - encoding: unused
1579 * - decoding: set by user
1582 #define FF_AA_AUTO 0
1583 #define FF_AA_FASTINT 1 //not implemented yet
1585 #define FF_AA_FLOAT 3
1587 * Quantizer noise shaping.
1588 * - encoding: set by user
1589 * - decoding: unused
1591 int quantizer_noise_shaping;
1595 * is used to decide how many independant tasks should be passed to execute()
1596 * - encoding: set by user
1597 * - decoding: set by user
1602 * the codec may call this to execute several independant things. it will return only after
1603 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1604 * default implementation will execute the parts serially
1605 * @param count the number of things to execute
1606 * - encoding: set by lavc, user can override
1607 * - decoding: set by lavc, user can override
1609 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1613 * can be used by execute() to store some per AVCodecContext stuff.
1614 * - encoding: set by execute()
1615 * - decoding: set by execute()
1617 void *thread_opaque;
1620 * Motion estimation threshold. under which no motion estimation is
1621 * performed, but instead the user specified motion vectors are used
1623 * - encoding: set by user
1624 * - decoding: unused
1629 * Macroblock threshold. under which the user specified macroblock types will be used
1630 * - encoding: set by user
1631 * - decoding: unused
1636 * precision of the intra dc coefficient - 8.
1637 * - encoding: set by user
1638 * - decoding: unused
1640 int intra_dc_precision;
1643 * noise vs. sse weight for the nsse comparsion function.
1644 * - encoding: set by user
1645 * - decoding: unused
1650 * number of macroblock rows at the top which are skiped.
1651 * - encoding: unused
1652 * - decoding: set by user
1657 * number of macroblock rows at the bottom which are skiped.
1658 * - encoding: unused
1659 * - decoding: set by user
1665 * - encoding: set by user
1666 * - decoding: set by lavc
1669 #define FF_PROFILE_UNKNOWN -99
1673 * - encoding: set by user
1674 * - decoding: set by lavc
1677 #define FF_LEVEL_UNKNOWN -99
1680 * low resolution decoding. 1-> 1/2 size, 2->1/4 size
1681 * - encoding: unused
1682 * - decoding: set by user
1687 * bistream width / height. may be different from width/height if lowres
1688 * or other things are used
1689 * - encoding: unused
1690 * - decoding: set by user before init if known, codec should override / dynamically change if needed
1692 int coded_width, coded_height;
1699 typedef struct AVOption {
1700 /** options' name */
1701 const char *name; /* if name is NULL, it indicates a link to next */
1702 /** short English text help or const struct AVOption* subpointer */
1703 const char *help; // const struct AVOption* sub;
1704 /** offset to context structure where the parsed value should be stored */
1706 /** options' type */
1708 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1709 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1710 #define FF_OPT_TYPE_INT 3 ///< integer
1711 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1712 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1713 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1714 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1715 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1716 /** min value (min == max -> no limits) */
1718 /** maximum value for double/int */
1720 /** default boo [0,1]l/double/int value */
1723 * default string value (with optional semicolon delimited extra option-list
1724 * i.e. option1;option2;option3
1725 * defval might select other then first argument as default
1728 #define FF_OPT_MAX_DEPTH 10
1732 * Parse option(s) and sets fields in passed structure
1733 * @param strct structure where the parsed results will be written
1734 * @param list list with AVOptions
1735 * @param opts string with options for parsing
1737 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1743 typedef struct AVCodec {
1745 enum CodecType type;
1748 int (*init)(AVCodecContext *);
1749 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1750 int (*close)(AVCodecContext *);
1751 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1752 uint8_t *buf, int buf_size);
1754 const AVOption *options;
1755 struct AVCodec *next;
1756 void (*flush)(AVCodecContext *);
1757 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1758 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1762 * four components are given, that's all.
1763 * the last component is alpha
1765 typedef struct AVPicture {
1767 int linesize[4]; ///< number of bytes per line
1772 * This structure defines a method for communicating palette changes
1773 * between and demuxer and a decoder.
1775 #define AVPALETTE_SIZE 1024
1776 #define AVPALETTE_COUNT 256
1777 typedef struct AVPaletteControl {
1779 /* demuxer sets this to 1 to indicate the palette has changed;
1780 * decoder resets to 0 */
1781 int palette_changed;
1783 /* 4-byte ARGB palette entries, stored in native byte order; note that
1784 * the individual palette components should be on a 8-bit scale; if
1785 * the palette data comes from a IBM VGA native format, the component
1786 * data is probably 6 bits in size and needs to be scaled */
1787 unsigned int palette[AVPALETTE_COUNT];
1791 extern AVCodec ac3_encoder;
1792 extern AVCodec mp2_encoder;
1793 extern AVCodec mp3lame_encoder;
1794 extern AVCodec oggvorbis_encoder;
1795 extern AVCodec faac_encoder;
1796 extern AVCodec xvid_encoder;
1797 extern AVCodec mpeg1video_encoder;
1798 extern AVCodec mpeg2video_encoder;
1799 extern AVCodec h261_encoder;
1800 extern AVCodec h263_encoder;
1801 extern AVCodec h263p_encoder;
1802 extern AVCodec flv_encoder;
1803 extern AVCodec rv10_encoder;
1804 extern AVCodec rv20_encoder;
1805 extern AVCodec dvvideo_encoder;
1806 extern AVCodec mjpeg_encoder;
1807 extern AVCodec ljpeg_encoder;
1808 extern AVCodec png_encoder;
1809 extern AVCodec ppm_encoder;
1810 extern AVCodec pgm_encoder;
1811 extern AVCodec pgmyuv_encoder;
1812 extern AVCodec pbm_encoder;
1813 extern AVCodec pam_encoder;
1814 extern AVCodec mpeg4_encoder;
1815 extern AVCodec msmpeg4v1_encoder;
1816 extern AVCodec msmpeg4v2_encoder;
1817 extern AVCodec msmpeg4v3_encoder;
1818 extern AVCodec wmv1_encoder;
1819 extern AVCodec wmv2_encoder;
1820 extern AVCodec huffyuv_encoder;
1821 extern AVCodec h264_encoder;
1822 extern AVCodec asv1_encoder;
1823 extern AVCodec asv2_encoder;
1824 extern AVCodec vcr1_encoder;
1825 extern AVCodec ffv1_encoder;
1826 extern AVCodec snow_encoder;
1827 extern AVCodec mdec_encoder;
1828 extern AVCodec zlib_encoder;
1829 extern AVCodec sonic_encoder;
1830 extern AVCodec sonic_ls_encoder;
1831 extern AVCodec svq1_encoder;
1833 extern AVCodec h263_decoder;
1834 extern AVCodec h261_decoder;
1835 extern AVCodec mpeg4_decoder;
1836 extern AVCodec msmpeg4v1_decoder;
1837 extern AVCodec msmpeg4v2_decoder;
1838 extern AVCodec msmpeg4v3_decoder;
1839 extern AVCodec wmv1_decoder;
1840 extern AVCodec wmv2_decoder;
1841 extern AVCodec mpeg1video_decoder;
1842 extern AVCodec mpeg2video_decoder;
1843 extern AVCodec mpegvideo_decoder;
1844 extern AVCodec mpeg_xvmc_decoder;
1845 extern AVCodec h263i_decoder;
1846 extern AVCodec flv_decoder;
1847 extern AVCodec rv10_decoder;
1848 extern AVCodec rv20_decoder;
1849 extern AVCodec svq1_decoder;
1850 extern AVCodec svq3_decoder;
1851 extern AVCodec dvvideo_decoder;
1852 extern AVCodec wmav1_decoder;
1853 extern AVCodec wmav2_decoder;
1854 extern AVCodec mjpeg_decoder;
1855 extern AVCodec mjpegb_decoder;
1856 extern AVCodec sp5x_decoder;
1857 extern AVCodec png_decoder;
1858 extern AVCodec mp2_decoder;
1859 extern AVCodec mp3_decoder;
1860 extern AVCodec mace3_decoder;
1861 extern AVCodec mace6_decoder;
1862 extern AVCodec huffyuv_decoder;
1863 extern AVCodec oggvorbis_decoder;
1864 extern AVCodec cyuv_decoder;
1865 extern AVCodec h264_decoder;
1866 extern AVCodec indeo3_decoder;
1867 extern AVCodec vp3_decoder;
1868 extern AVCodec theora_decoder;
1869 extern AVCodec amr_nb_decoder;
1870 extern AVCodec amr_nb_encoder;
1871 extern AVCodec amr_wb_encoder;
1872 extern AVCodec amr_wb_decoder;
1873 extern AVCodec aac_decoder;
1874 extern AVCodec mpeg4aac_decoder;
1875 extern AVCodec asv1_decoder;
1876 extern AVCodec asv2_decoder;
1877 extern AVCodec vcr1_decoder;
1878 extern AVCodec cljr_decoder;
1879 extern AVCodec ffv1_decoder;
1880 extern AVCodec snow_decoder;
1881 extern AVCodec fourxm_decoder;
1882 extern AVCodec mdec_decoder;
1883 extern AVCodec roq_decoder;
1884 extern AVCodec interplay_video_decoder;
1885 extern AVCodec xan_wc3_decoder;
1886 extern AVCodec rpza_decoder;
1887 extern AVCodec cinepak_decoder;
1888 extern AVCodec msrle_decoder;
1889 extern AVCodec msvideo1_decoder;
1890 extern AVCodec vqa_decoder;
1891 extern AVCodec idcin_decoder;
1892 extern AVCodec eightbps_decoder;
1893 extern AVCodec smc_decoder;
1894 extern AVCodec flic_decoder;
1895 extern AVCodec vmdvideo_decoder;
1896 extern AVCodec vmdaudio_decoder;
1897 extern AVCodec truemotion1_decoder;
1898 extern AVCodec mszh_decoder;
1899 extern AVCodec zlib_decoder;
1900 extern AVCodec ra_144_decoder;
1901 extern AVCodec ra_288_decoder;
1902 extern AVCodec roq_dpcm_decoder;
1903 extern AVCodec interplay_dpcm_decoder;
1904 extern AVCodec xan_dpcm_decoder;
1905 extern AVCodec sol_dpcm_decoder;
1906 extern AVCodec sonic_decoder;
1907 extern AVCodec qtrle_decoder;
1908 extern AVCodec flac_decoder;
1909 extern AVCodec tscc_decoder;
1910 extern AVCodec ulti_decoder;
1911 extern AVCodec qdraw_decoder;
1912 extern AVCodec xl_decoder;
1913 extern AVCodec qpeg_decoder;
1916 #define PCM_CODEC(id, name) \
1917 extern AVCodec name ## _decoder; \
1918 extern AVCodec name ## _encoder
1920 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1921 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1922 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1923 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1924 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1925 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1926 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1927 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1931 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1932 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1933 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1934 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1935 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1936 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1937 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1938 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1939 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1940 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1941 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1942 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1943 PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
1947 /* dummy raw video codec */
1948 extern AVCodec rawvideo_encoder;
1949 extern AVCodec rawvideo_decoder;
1951 /* the following codecs use external GPL libs */
1952 extern AVCodec ac3_decoder;
1953 extern AVCodec dts_decoder;
1957 struct ReSampleContext;
1958 struct AVResampleContext;
1960 typedef struct ReSampleContext ReSampleContext;
1962 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1963 int output_rate, int input_rate);
1964 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1965 void audio_resample_close(ReSampleContext *s);
1967 struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
1968 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1969 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1970 void av_resample_close(struct AVResampleContext *c);
1972 /* YUV420 format is assumed ! */
1974 struct ImgReSampleContext;
1976 typedef struct ImgReSampleContext ImgReSampleContext;
1978 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1979 int input_width, int input_height);
1981 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1982 int iwidth, int iheight,
1983 int topBand, int bottomBand,
1984 int leftBand, int rightBand,
1985 int padtop, int padbottom,
1986 int padleft, int padright);
1989 void img_resample(ImgReSampleContext *s,
1990 AVPicture *output, const AVPicture *input);
1992 void img_resample_close(ImgReSampleContext *s);
1995 * Allocate memory for a picture. Call avpicture_free to free it.
1997 * @param picture the picture to be filled in.
1998 * @param pix_fmt the format of the picture.
1999 * @param width the width of the picture.
2000 * @param height the height of the picture.
2001 * @return 0 if successful, -1 if not.
2003 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
2005 /* Free a picture previously allocated by avpicture_alloc. */
2006 void avpicture_free(AVPicture *picture);
2008 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
2009 int pix_fmt, int width, int height);
2010 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
2011 unsigned char *dest, int dest_size);
2012 int avpicture_get_size(int pix_fmt, int width, int height);
2013 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
2014 const char *avcodec_get_pix_fmt_name(int pix_fmt);
2015 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
2016 enum PixelFormat avcodec_get_pix_fmt(const char* name);
2017 unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
2019 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
2020 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
2021 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
2022 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
2023 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
2024 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
2026 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
2028 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
2029 int has_alpha, int *loss_ptr);
2031 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
2032 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
2033 int img_get_alpha_info(const AVPicture *src,
2034 int pix_fmt, int width, int height);
2036 /* convert among pixel formats */
2037 int img_convert(AVPicture *dst, int dst_pix_fmt,
2038 const AVPicture *src, int pix_fmt,
2039 int width, int height);
2041 /* deinterlace a picture */
2042 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2043 int pix_fmt, int width, int height);
2045 /* external high level API */
2047 extern AVCodec *first_avcodec;
2049 /* returns LIBAVCODEC_VERSION_INT constant */
2050 unsigned avcodec_version(void);
2051 /* returns LIBAVCODEC_BUILD constant */
2052 unsigned avcodec_build(void);
2053 void avcodec_init(void);
2055 void register_avcodec(AVCodec *format);
2056 AVCodec *avcodec_find_encoder(enum CodecID id);
2057 AVCodec *avcodec_find_encoder_by_name(const char *name);
2058 AVCodec *avcodec_find_decoder(enum CodecID id);
2059 AVCodec *avcodec_find_decoder_by_name(const char *name);
2060 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
2062 void avcodec_get_context_defaults(AVCodecContext *s);
2063 AVCodecContext *avcodec_alloc_context(void);
2064 void avcodec_get_frame_defaults(AVFrame *pic);
2065 AVFrame *avcodec_alloc_frame(void);
2067 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
2068 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
2069 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2070 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2071 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2073 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2074 void avcodec_thread_free(AVCodecContext *s);
2075 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2076 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2077 //FIXME func typedef
2080 * opens / inits the AVCodecContext.
2083 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2085 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2086 int *frame_size_ptr,
2087 uint8_t *buf, int buf_size);
2088 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2089 int *got_picture_ptr,
2090 uint8_t *buf, int buf_size);
2091 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2093 uint8_t *buf, int buf_size);
2094 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2095 const short *samples);
2096 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2097 const AVFrame *pict);
2099 int avcodec_close(AVCodecContext *avctx);
2101 void avcodec_register_all(void);
2103 void avcodec_flush_buffers(AVCodecContext *avctx);
2105 /* misc usefull functions */
2108 * returns a single letter to describe the picture type
2110 char av_get_pict_type_char(int pict_type);
2113 * reduce a fraction.
2114 * this is usefull for framerate calculations
2115 * @param max the maximum allowed for dst_nom & dst_den
2116 * @return 1 if exact, 0 otherwise
2118 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2121 * rescale a 64bit integer with rounding to nearest.
2122 * a simple a*b/c isnt possible as it can overflow
2124 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2127 * rescale a 64bit integer with specified rounding.
2128 * a simple a*b/c isnt possible as it can overflow
2130 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding);
2133 typedef struct AVCodecParserContext {
2135 struct AVCodecParser *parser;
2136 int64_t frame_offset; /* offset of the current frame */
2137 int64_t cur_offset; /* current offset
2138 (incremented by each av_parser_parse()) */
2139 int64_t last_frame_offset; /* offset of the last frame */
2141 int pict_type; /* XXX: put it back in AVCodecContext */
2142 int repeat_pict; /* XXX: put it back in AVCodecContext */
2143 int64_t pts; /* pts of the current frame */
2144 int64_t dts; /* dts of the current frame */
2149 int fetch_timestamp;
2151 #define AV_PARSER_PTS_NB 4
2152 int cur_frame_start_index;
2153 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2154 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2155 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2156 } AVCodecParserContext;
2158 typedef struct AVCodecParser {
2159 int codec_ids[5]; /* several codec IDs are permitted */
2161 int (*parser_init)(AVCodecParserContext *s);
2162 int (*parser_parse)(AVCodecParserContext *s,
2163 AVCodecContext *avctx,
2164 uint8_t **poutbuf, int *poutbuf_size,
2165 const uint8_t *buf, int buf_size);
2166 void (*parser_close)(AVCodecParserContext *s);
2167 struct AVCodecParser *next;
2170 extern AVCodecParser *av_first_parser;
2172 void av_register_codec_parser(AVCodecParser *parser);
2173 AVCodecParserContext *av_parser_init(int codec_id);
2174 int av_parser_parse(AVCodecParserContext *s,
2175 AVCodecContext *avctx,
2176 uint8_t **poutbuf, int *poutbuf_size,
2177 const uint8_t *buf, int buf_size,
2178 int64_t pts, int64_t dts);
2179 void av_parser_close(AVCodecParserContext *s);
2181 extern AVCodecParser mpegvideo_parser;
2182 extern AVCodecParser mpeg4video_parser;
2183 extern AVCodecParser h261_parser;
2184 extern AVCodecParser h263_parser;
2185 extern AVCodecParser h264_parser;
2186 extern AVCodecParser mjpeg_parser;
2187 extern AVCodecParser pnm_parser;
2188 extern AVCodecParser mpegaudio_parser;
2189 extern AVCodecParser ac3_parser;
2192 void *av_malloc(unsigned int size);
2193 void *av_mallocz(unsigned int size);
2194 void *av_realloc(void *ptr, unsigned int size);
2195 void av_free(void *ptr);
2196 char *av_strdup(const char *s);
2197 void av_freep(void *ptr);
2198 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2199 /* for static data only */
2200 /* call av_free_static to release all staticaly allocated tables */
2201 void av_free_static(void);
2202 void *av_mallocz_static(unsigned int size);
2204 /* add by bero : in adx.c */
2205 int is_adx(const unsigned char *buf,size_t bufsize);
2207 void img_copy(AVPicture *dst, const AVPicture *src,
2208 int pix_fmt, int width, int height);
2214 #define AV_LOG_QUIET -1
2215 #define AV_LOG_ERROR 0
2216 #define AV_LOG_INFO 1
2217 #define AV_LOG_DEBUG 2
2220 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2222 extern void av_log(void*, int level, const char *fmt, ...);
2225 extern void av_vlog(void*, int level, const char *fmt, va_list);
2226 extern int av_log_get_level(void);
2227 extern void av_log_set_level(int);
2228 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2231 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2232 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2233 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2234 (((uint8_t*)(x))[1] << 16) | \
2235 (((uint8_t*)(x))[2] << 8) | \
2237 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2238 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2239 (((uint8_t*)(x))[2] << 16) | \
2240 (((uint8_t*)(x))[1] << 8) | \
2248 #endif /* AVCODEC_H */