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 4720
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,
103 /* various pcm "codecs" */
113 /* various adpcm codecs */
114 CODEC_ID_ADPCM_IMA_QT,
115 CODEC_ID_ADPCM_IMA_WAV,
116 CODEC_ID_ADPCM_IMA_DK3,
117 CODEC_ID_ADPCM_IMA_DK4,
118 CODEC_ID_ADPCM_IMA_WS,
119 CODEC_ID_ADPCM_IMA_SMJPEG,
131 /* RealAudio codecs*/
135 /* various DPCM codecs */
137 CODEC_ID_INTERPLAY_DPCM,
142 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
143 stream (only used by libavformat) */
149 /* CODEC_ID_MP3LAME is absolete */
150 #define CODEC_ID_MP3LAME CODEC_ID_MP3
153 CODEC_TYPE_UNKNOWN = -1,
160 * Pixel format. Notes:
162 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
163 * color is put together as:
164 * (A << 24) | (R << 16) | (G << 8) | B
165 * This is stored as BGRA on little endian CPU architectures and ARGB on
168 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
169 * image data is stored in AVFrame.data[0]. The palette is transported in
170 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
171 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
172 * also endian-specific). Note also that the individual RGB palette
173 * components stored in AVFrame.data[1] should be in the range 0..255.
174 * This is important as many custom PAL8 video codecs that were designed
175 * to run on the IBM VGA graphics adapter use 6-bit palette components.
178 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
179 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
180 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
181 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
182 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
183 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
184 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
185 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
186 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
187 PIX_FMT_RGB565, ///< always stored in cpu endianness
188 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
190 PIX_FMT_MONOWHITE, ///< 0 is white
191 PIX_FMT_MONOBLACK, ///< 0 is black
192 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
193 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
194 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
195 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
196 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
197 PIX_FMT_XVMC_MPEG2_IDCT,
198 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
202 /* currently unused, may be used if 24/32 bits samples ever supported */
204 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
208 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
211 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
212 * this is mainly needed because some optimized bitstream readers read
213 * 32 or 64 bit at once and could read over the end<br>
214 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
215 * MPEG bitstreams could cause overread and segfault
217 #define FF_INPUT_BUFFER_PADDING_SIZE 8
219 /* motion estimation type, EPZS by default */
229 typedef struct RcOverride{
232 int qscale; // if this is 0 then quality_factor will be used instead
233 float quality_factor;
236 /* only for ME compatiblity with old apps */
237 extern int motion_estimation_method;
239 #define FF_MAX_B_FRAMES 8
242 these flags can be passed in AVCodecContext.flags before initing
243 Note: note not everything is supported yet
246 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
247 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
248 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
249 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
250 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
251 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
252 /* parent program gurantees that the input for b-frame containing streams is not written to
253 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
254 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
255 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
256 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
257 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
258 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
259 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
260 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
261 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
262 of only at frame boundaries */
263 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
264 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
265 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
266 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
267 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
268 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
269 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
270 /* Fx : Flag for h263+ extra options */
271 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
272 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
273 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
274 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
275 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
276 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
277 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
278 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
279 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
280 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
281 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
282 #define CODEC_FLAG_CLOSED_GOP 0x80000000
283 /* Unsupported options :
284 * Syntax Arithmetic coding (SAC)
285 * Reference Picture Selection
286 * Independant Segment Decoding */
288 /* codec capabilities */
290 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
292 * Codec uses get_buffer() for allocating buffers.
293 * direct rendering method 1
295 #define CODEC_CAP_DR1 0x0002
296 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
298 #define CODEC_CAP_PARSE_ONLY 0x0004
299 #define CODEC_CAP_TRUNCATED 0x0008
300 /* codec can export data for HW decoding (XvMC) */
301 #define CODEC_CAP_HWACCEL 0x0010
302 /** codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data */
303 #define CODEC_CAP_DELAY 0x0020
305 //the following defines might change, so dont expect compatibility if u use them
306 #define MB_TYPE_INTRA4x4 0x0001
307 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
308 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
309 #define MB_TYPE_16x16 0x0008
310 #define MB_TYPE_16x8 0x0010
311 #define MB_TYPE_8x16 0x0020
312 #define MB_TYPE_8x8 0x0040
313 #define MB_TYPE_INTERLACED 0x0080
314 #define MB_TYPE_DIRECT2 0x0100 //FIXME
315 #define MB_TYPE_ACPRED 0x0200
316 #define MB_TYPE_GMC 0x0400
317 #define MB_TYPE_SKIP 0x0800
318 #define MB_TYPE_P0L0 0x1000
319 #define MB_TYPE_P1L0 0x2000
320 #define MB_TYPE_P0L1 0x4000
321 #define MB_TYPE_P1L1 0x8000
322 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
323 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
324 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
325 #define MB_TYPE_QUANT 0x00010000
326 #define MB_TYPE_CBP 0x00020000
327 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
331 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
333 typedef struct AVPanScan{
336 * - encoding: set by user.
337 * - decoding: set by lavc
342 * width and height in 1/16 pel
343 * - encoding: set by user.
344 * - decoding: set by lavc
350 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
351 * - encoding: set by user.
352 * - decoding: set by lavc
354 int16_t position[3][2];
357 #define FF_COMMON_FRAME \
359 * pointer to the picture planes.\
360 * this might be different from the first allocated byte\
367 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
368 * this isnt used by lavc unless the default get/release_buffer() is used\
374 * 1 -> keyframe, 0-> not\
375 * - encoding: set by lavc\
376 * - decoding: set by lavc\
381 * picture type of the frame, see ?_TYPE below.\
382 * - encoding: set by lavc for coded_picture (and set by user for input)\
383 * - decoding: set by lavc\
388 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
389 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
390 * - encoding: MUST be set by user\
391 * - decoding: set by lavc\
396 * picture number in bitstream order.\
397 * - encoding: set by\
398 * - decoding: set by lavc\
400 int coded_picture_number;\
402 * picture number in display order.\
403 * - encoding: set by\
404 * - decoding: set by lavc\
406 int display_picture_number;\
409 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
410 * - encoding: set by lavc for coded_picture (and set by user for input)\
411 * - decoding: set by lavc\
416 * buffer age (1->was last buffer and dint change, 2->..., ...).\
417 * set to INT_MAX if the buffer has not been used yet \
418 * - encoding: unused\
419 * - decoding: MUST be set by get_buffer()\
424 * is this picture used as reference\
425 * - encoding: unused\
426 * - decoding: set by lavc (before get_buffer() call))\
432 * - encoding: unused\
433 * - decoding: set by lavc\
435 int8_t *qscale_table;\
438 * - encoding: unused\
439 * - decoding: set by lavc\
444 * mbskip_table[mb]>=1 if MB didnt change\
445 * stride= mb_width = (width+15)>>4\
446 * - encoding: unused\
447 * - decoding: set by lavc\
449 uint8_t *mbskip_table;\
452 * Motion vector table\
453 * - encoding: set by user\
454 * - decoding: set by lavc\
456 int16_t (*motion_val[2])[2];\
459 * Macroblock type table\
460 * mb_type_base + mb_width + 2\
461 * - encoding: set by user\
462 * - decoding: set by lavc\
467 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
468 * - encoding: unused\
469 * - decoding: set by lavc\
471 uint8_t motion_subsample_log2;\
474 * for some private data of the user\
475 * - encoding: unused\
476 * - decoding: set by user\
482 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
483 * - decoding: unused\
488 * type of the buffer (to keep track of who has to dealloc data[*])\
489 * - encoding: set by the one who allocs it\
490 * - decoding: set by the one who allocs it\
491 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
496 * when decoding, this signal how much the picture must be delayed.\
497 * extra_delay = repeat_pict / (2*fps)\
498 * - encoding: unused\
499 * - decoding: set by lavc\
509 * The content of the picture is interlaced.\
510 * - encoding: set by user\
511 * - decoding: set by lavc (default 0)\
513 int interlaced_frame;\
516 * if the content is interlaced, is top field displayed first.\
517 * - encoding: set by user\
518 * - decoding: set by lavc\
520 int top_field_first;\
524 * - encoding: set by user\
525 * - decoding: set by lavc\
527 AVPanScan *pan_scan;\
530 * tell user application that palette has changed from previous frame.\
531 * - encoding: ??? (no palette-enabled encoder yet)\
532 * - decoding: set by lavc (default 0)\
534 int palette_has_changed;\
537 * Codec suggestion on buffer type if != 0\
538 * - encoding: unused\
539 * - decoding: set by lavc (before get_buffer() call))\
545 * - encoding: unused\
546 * - decoding: set by lavc\
551 * Motion referece frame index\
552 * - encoding: set by user\
553 * - decoding: set by lavc\
555 int8_t *ref_index[2];
557 #define FF_QSCALE_TYPE_MPEG1 0
558 #define FF_QSCALE_TYPE_MPEG2 1
560 #define FF_BUFFER_TYPE_INTERNAL 1
561 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
562 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
563 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
566 #define FF_I_TYPE 1 // Intra
567 #define FF_P_TYPE 2 // Predicted
568 #define FF_B_TYPE 3 // Bi-dir predicted
569 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
573 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
574 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
575 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
576 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
581 typedef struct AVFrame {
585 #define DEFAULT_FRAME_RATE_BASE 1001000
590 typedef struct AVCLASS AVClass;
592 const char* class_name;
593 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
594 or AVFormatContext, which begin with an AVClass.
595 Needed because av_log is in libavcodec and has no visibility
596 of AVIn/OutputFormat */
600 * main external api structure.
602 typedef struct AVCodecContext {
604 * Info on struct for av_log
605 * - set by avcodec_alloc_context
609 * the average bitrate.
610 * - encoding: set by user. unused for constant quantizer encoding
611 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
616 * number of bits the bitstream is allowed to diverge from the reference.
617 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
618 * - encoding: set by user. unused for constant quantizer encoding
621 int bit_rate_tolerance;
625 * - encoding: set by user.
626 * - decoding: set by user.
631 * some codecs needs additionnal format info. It is stored here
632 * - encoding: set by user.
633 * - decoding: set by lavc. (FIXME is this ok?)
638 * motion estimation algorithm used for video coding.
639 * - encoding: MUST be set by user.
645 * some codecs need / can use extra-data like huffman tables.
646 * mjpeg: huffman tables
647 * rv10: additional flags
648 * mpeg4: global headers (they can be in the bitstream or here)
649 * - encoding: set/allocated/freed by lavc.
650 * - decoding: set/allocated/freed by user.
657 * frames per sec multiplied by frame_rate_base.
658 * for variable fps this is the precission, so if the timestamps
659 * can be specified in msec precssion then this is 1000*frame_rate_base
660 * - encoding: MUST be set by user
661 * - decoding: set by lavc. 0 or the frame_rate if available
667 * - encoding: MUST be set by user.
668 * - decoding: set by user if known, codec should override / dynamically change if needed
672 #define FF_ASPECT_EXTENDED 15
675 * the number of pictures in a group of pitures, or 0 for intra_only.
676 * - encoding: set by user.
682 * pixel format, see PIX_FMT_xxx.
683 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
684 * conversion is in order. This only works for
685 * codecs with one supported pix_fmt, we should
686 * do something for a generic case as well.
687 * - decoding: set by lavc.
689 enum PixelFormat pix_fmt;
692 * Frame rate emulation. If not zero lower layer (i.e. format handler)
693 * has to read frames at native frame rate.
694 * - encoding: set by user.
695 * - decoding: unused.
700 * if non NULL, 'draw_horiz_band' is called by the libavcodec
701 * decoder to draw an horizontal band. It improve cache usage. Not
702 * all codecs can do that. You must check the codec capabilities
705 * - decoding: set by user.
706 * @param height the height of the slice
707 * @param y the y position of the slice
708 * @param type 1->top field, 2->bottom field, 3->frame
709 * @param offset offset into the AVFrame.data from which the slice should be read
711 void (*draw_horiz_band)(struct AVCodecContext *s,
712 const AVFrame *src, int offset[4],
713 int y, int type, int height);
716 int sample_rate; ///< samples per sec
718 int sample_fmt; ///< sample format, currenly unused
720 /* the following data should not be initialized */
721 int frame_size; ///< in samples, initialized when calling 'init'
722 int frame_number; ///< audio or video frame number
723 int real_pict_num; ///< returns the real picture number of previous encoded frame
726 * number of frames the decoded output will be delayed relative to
728 * - encoding: set by lavc.
733 /* - encoding parameters */
734 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
735 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
739 * - encoding: set by user.
746 * - encoding: set by user.
752 * maximum quantizer difference etween frames.
753 * - encoding: set by user.
759 * maximum number of b frames between non b frames.
760 * note: the output will be delayed by max_b_frames+1 relative to the input
761 * - encoding: set by user.
767 * qscale factor between ip and b frames.
768 * - encoding: set by user.
771 float b_quant_factor;
773 /** obsolete FIXME remove */
775 int b_frame_strategy;
780 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
784 struct AVCodec *codec;
788 /* unused, FIXME remove*/
791 int rtp_payload_size; /* The size of the RTP payload, the coder will */
792 /* do it's best to deliver a chunk with size */
793 /* below rtp_payload_size, the chunk will start */
794 /* with a start code on some codecs like H.263 */
795 /* This doesn't take account of any particular */
796 /* headers inside the transmited RTP payload */
799 /* The RTP callcack: This function is called */
800 /* every time the encoder as a packet to send */
801 /* Depends on the encoder if the data starts */
802 /* with a Start Code (it should) H.263 does */
803 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
805 /* statistics, used for 2-pass encoding */
816 * number of bits used for the previously encoded frame.
817 * - encoding: set by lavc
823 * private data of the user, can be used to carry app specific stuff.
824 * - encoding: set by user
825 * - decoding: set by user
830 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
831 enum CodecID codec_id; /* see CODEC_ID_xxx */
834 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
835 * this is used to workaround some encoder bugs
836 * - encoding: set by user, if not then the default based on codec_id will be used
837 * - decoding: set by user, will be converted to upper case by lavc during init
839 unsigned int codec_tag;
842 * workaround bugs in encoders which sometimes cannot be detected automatically.
844 * - decoding: set by user
847 #define FF_BUG_AUTODETECT 1 ///< autodetection
848 #define FF_BUG_OLD_MSMPEG4 2
849 #define FF_BUG_XVID_ILACE 4
850 #define FF_BUG_UMP4 8
851 #define FF_BUG_NO_PADDING 16
852 #define FF_BUG_AMV 32
853 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
854 #define FF_BUG_QPEL_CHROMA 64
855 #define FF_BUG_STD_QPEL 128
856 #define FF_BUG_QPEL_CHROMA2 256
857 #define FF_BUG_DIRECT_BLOCKSIZE 512
858 #define FF_BUG_EDGE 1024
859 #define FF_BUG_HPEL_CHROMA 2048
860 #define FF_BUG_DC_CLIP 4096
861 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
864 * luma single coeff elimination threshold.
865 * - encoding: set by user
868 int luma_elim_threshold;
871 * chroma single coeff elimination threshold.
872 * - encoding: set by user
875 int chroma_elim_threshold;
878 * strictly follow the std (MPEG4, ...).
879 * - encoding: set by user
882 int strict_std_compliance;
885 * qscale offset between ip and b frames.
886 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
887 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
888 * - encoding: set by user.
891 float b_quant_offset;
894 * error resilience higher values will detect more errors but may missdetect
895 * some more or less valid parts as errors.
897 * - decoding: set by user
899 int error_resilience;
900 #define FF_ER_CAREFULL 1
901 #define FF_ER_COMPLIANT 2
902 #define FF_ER_AGGRESSIVE 3
903 #define FF_ER_VERY_AGGRESSIVE 4
906 * called at the beginning of each frame to get a buffer for it.
907 * if pic.reference is set then the frame will be read later by lavc
908 * avcodec_align_dimensions() should be used to find the required width and
909 * height, as they normally need to be rounded up to the next multiple of 16
911 * - decoding: set by lavc, user can override
913 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
916 * called to release buffers which where allocated with get_buffer.
917 * a released buffer can be reused in get_buffer()
918 * pic.data[*] must be set to NULL
920 * - decoding: set by lavc, user can override
922 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
925 * if 1 the stream has a 1 frame delay during decoding.
926 * - encoding: set by lavc
927 * - decoding: set by lavc
931 int block_align; ///< used by some WAV based audio codecs
933 int parse_only; /* - decoding only: if true, only parsing is done
934 (function avcodec_parse_frame()). The frame
935 data is returned. Only MPEG codecs support this now. */
938 * 0-> h263 quant 1-> mpeg quant.
939 * - encoding: set by user.
945 * pass1 encoding statistics output buffer.
946 * - encoding: set by lavc
952 * pass2 encoding statistics input buffer.
953 * concatenated stuff from stats_out of pass1 should be placed here
954 * - encoding: allocated/set/freed by user
960 * ratecontrol qmin qmax limiting method.
961 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
962 * - encoding: set by user.
971 * ratecontrol override, see RcOverride.
972 * - encoding: allocated/set/freed by user.
975 RcOverride *rc_override;
976 int rc_override_count;
979 * rate control equation.
980 * - encoding: set by user
987 * - encoding: set by user.
994 * - encoding: set by user.
1000 * decoder bitstream buffer size.
1001 * - encoding: set by user.
1002 * - decoding: unused
1005 float rc_buffer_aggressivity;
1008 * qscale factor between p and i frames.
1009 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1010 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1011 * - encoding: set by user.
1012 * - decoding: unused
1014 float i_quant_factor;
1017 * qscale offset between p and i frames.
1018 * - encoding: set by user.
1019 * - decoding: unused
1021 float i_quant_offset;
1024 * initial complexity for pass1 ratecontrol.
1025 * - encoding: set by user.
1026 * - decoding: unused
1028 float rc_initial_cplx;
1031 * dct algorithm, see FF_DCT_* below.
1032 * - encoding: set by user
1033 * - decoding: unused
1036 #define FF_DCT_AUTO 0
1037 #define FF_DCT_FASTINT 1
1038 #define FF_DCT_INT 2
1039 #define FF_DCT_MMX 3
1040 #define FF_DCT_MLIB 4
1041 #define FF_DCT_ALTIVEC 5
1042 #define FF_DCT_FAAN 6
1045 * luminance masking (0-> disabled).
1046 * - encoding: set by user
1047 * - decoding: unused
1052 * temporary complexity masking (0-> disabled).
1053 * - encoding: set by user
1054 * - decoding: unused
1056 float temporal_cplx_masking;
1059 * spatial complexity masking (0-> disabled).
1060 * - encoding: set by user
1061 * - decoding: unused
1063 float spatial_cplx_masking;
1066 * p block masking (0-> disabled).
1067 * - encoding: set by user
1068 * - decoding: unused
1073 * darkness masking (0-> disabled).
1074 * - encoding: set by user
1075 * - decoding: unused
1080 /* for binary compatibility */
1084 * idct algorithm, see FF_IDCT_* below.
1085 * - encoding: set by user
1086 * - decoding: set by user
1089 #define FF_IDCT_AUTO 0
1090 #define FF_IDCT_INT 1
1091 #define FF_IDCT_SIMPLE 2
1092 #define FF_IDCT_SIMPLEMMX 3
1093 #define FF_IDCT_LIBMPEG2MMX 4
1094 #define FF_IDCT_PS2 5
1095 #define FF_IDCT_MLIB 6
1096 #define FF_IDCT_ARM 7
1097 #define FF_IDCT_ALTIVEC 8
1098 #define FF_IDCT_SH4 9
1099 #define FF_IDCT_SIMPLEARM 10
1103 * - encoding: set by lavc
1104 * - decoding: set by user (or 0)
1108 * slice offsets in the frame in bytes.
1109 * - encoding: set/allocated by lavc
1110 * - decoding: set/allocated by user (or NULL)
1115 * error concealment flags.
1116 * - encoding: unused
1117 * - decoding: set by user
1119 int error_concealment;
1120 #define FF_EC_GUESS_MVS 1
1121 #define FF_EC_DEBLOCK 2
1124 * dsp_mask could be add used to disable unwanted CPU features
1125 * CPU features (i.e. MMX, SSE. ...)
1127 * with FORCE flag you may instead enable given CPU features
1128 * (Dangerous: usable in case of misdetection, improper usage however will
1129 * result into program crash)
1132 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1133 /* lower 16 bits - CPU features */
1135 #define FF_MM_MMX 0x0001 /* standard MMX */
1136 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1137 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1138 #define FF_MM_SSE 0x0008 /* SSE functions */
1139 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1140 #endif /* HAVE_MMX */
1143 * bits per sample/pixel from the demuxer (needed for huffyuv).
1144 * - encoding: set by lavc
1145 * - decoding: set by user
1147 int bits_per_sample;
1150 * prediction method (needed for huffyuv).
1151 * - encoding: set by user
1152 * - decoding: unused
1154 int prediction_method;
1155 #define FF_PRED_LEFT 0
1156 #define FF_PRED_PLANE 1
1157 #define FF_PRED_MEDIAN 2
1160 * sample aspect ratio (0 if unknown).
1161 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1162 * - encoding: set by user.
1163 * - decoding: set by lavc.
1165 AVRational sample_aspect_ratio;
1168 * the picture in the bitstream.
1169 * - encoding: set by lavc
1170 * - decoding: set by lavc
1172 AVFrame *coded_frame;
1176 * - encoding: set by user.
1177 * - decoding: set by user.
1180 #define FF_DEBUG_PICT_INFO 1
1181 #define FF_DEBUG_RC 2
1182 #define FF_DEBUG_BITSTREAM 4
1183 #define FF_DEBUG_MB_TYPE 8
1184 #define FF_DEBUG_QP 16
1185 #define FF_DEBUG_MV 32
1186 #define FF_DEBUG_DCT_COEFF 0x00000040
1187 #define FF_DEBUG_SKIP 0x00000080
1188 #define FF_DEBUG_STARTCODE 0x00000100
1189 #define FF_DEBUG_PTS 0x00000200
1190 #define FF_DEBUG_ER 0x00000400
1191 #define FF_DEBUG_MMCO 0x00000800
1192 #define FF_DEBUG_BUGS 0x00001000
1193 #define FF_DEBUG_VIS_QP 0x00002000
1194 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1198 * - encoding: set by user.
1199 * - decoding: set by user.
1202 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1203 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1204 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1208 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1209 * - decoding: unused
1214 * minimum MB quantizer.
1215 * - encoding: set by user.
1216 * - decoding: unused
1221 * maximum MB quantizer.
1222 * - encoding: set by user.
1223 * - decoding: unused
1228 * motion estimation compare function.
1229 * - encoding: set by user.
1230 * - decoding: unused
1234 * subpixel motion estimation compare function.
1235 * - encoding: set by user.
1236 * - decoding: unused
1240 * macroblock compare function (not supported yet).
1241 * - encoding: set by user.
1242 * - decoding: unused
1246 * interlaced dct compare function
1247 * - encoding: set by user.
1248 * - decoding: unused
1251 #define FF_CMP_SAD 0
1252 #define FF_CMP_SSE 1
1253 #define FF_CMP_SATD 2
1254 #define FF_CMP_DCT 3
1255 #define FF_CMP_PSNR 4
1256 #define FF_CMP_BIT 5
1258 #define FF_CMP_ZERO 7
1259 #define FF_CMP_VSAD 8
1260 #define FF_CMP_VSSE 9
1261 #define FF_CMP_NSSE 10
1262 #define FF_CMP_CHROMA 256
1265 * ME diamond size & shape.
1266 * - encoding: set by user.
1267 * - decoding: unused
1272 * amount of previous MV predictors (2a+1 x 2a+1 square).
1273 * - encoding: set by user.
1274 * - decoding: unused
1276 int last_predictor_count;
1279 * pre pass for motion estimation.
1280 * - encoding: set by user.
1281 * - decoding: unused
1286 * motion estimation pre pass compare function.
1287 * - encoding: set by user.
1288 * - decoding: unused
1293 * ME pre pass diamond size & shape.
1294 * - encoding: set by user.
1295 * - decoding: unused
1300 * subpel ME quality.
1301 * - encoding: set by user.
1302 * - decoding: unused
1304 int me_subpel_quality;
1307 * callback to negotiate the pixelFormat.
1308 * @param fmt is the list of formats which are supported by the codec,
1309 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1310 * the first is allways the native one
1311 * @return the choosen format
1312 * - encoding: unused
1313 * - decoding: set by user, if not set then the native format will always be choosen
1315 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1318 * DTG active format information (additionnal aspect ratio
1319 * information only used in DVB MPEG2 transport streams). 0 if
1322 * - encoding: unused.
1323 * - decoding: set by decoder
1325 int dtg_active_format;
1326 #define FF_DTG_AFD_SAME 8
1327 #define FF_DTG_AFD_4_3 9
1328 #define FF_DTG_AFD_16_9 10
1329 #define FF_DTG_AFD_14_9 11
1330 #define FF_DTG_AFD_4_3_SP_14_9 13
1331 #define FF_DTG_AFD_16_9_SP_14_9 14
1332 #define FF_DTG_AFD_SP_4_3 15
1335 * Maximum motion estimation search range in subpel units.
1336 * if 0 then no limit
1338 * - encoding: set by user.
1339 * - decoding: unused.
1345 * for variable fps this is 1
1346 * - encoding: set by user.
1347 * - decoding: set by lavc.
1348 * @todo move this after frame_rate
1351 int frame_rate_base;
1353 * intra quantizer bias.
1354 * - encoding: set by user.
1355 * - decoding: unused
1357 int intra_quant_bias;
1358 #define FF_DEFAULT_QUANT_BIAS 999999
1361 * inter quantizer bias.
1362 * - encoding: set by user.
1363 * - decoding: unused
1365 int inter_quant_bias;
1369 * - encoding: unused.
1370 * - decoding: which clrtable should be used for 8bit RGB images
1371 * table have to be stored somewhere FIXME
1376 * internal_buffer count.
1377 * Dont touch, used by lavc default_get_buffer()
1379 int internal_buffer_count;
1383 * Dont touch, used by lavc default_get_buffer()
1385 void *internal_buffer;
1387 #define FF_LAMBDA_SHIFT 7
1388 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1389 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1390 #define FF_LAMBDA_MAX (256*128-1)
1392 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1394 * global quality for codecs which cannot change it per frame.
1395 * this should be proportional to MPEG1/2/4 qscale.
1396 * - encoding: set by user.
1397 * - decoding: unused
1401 #define FF_CODER_TYPE_VLC 0
1402 #define FF_CODER_TYPE_AC 1
1405 * - encoding: set by user.
1406 * - decoding: unused
1412 * - encoding: set by user.
1413 * - decoding: unused
1419 * - encoding: unused
1420 * - decoding: set by user.
1423 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1424 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1425 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1428 * XVideo Motion Acceleration
1429 * - encoding: forbidden
1430 * - decoding: set by decoder
1432 int xvmc_acceleration;
1435 * macroblock decision mode
1436 * - encoding: set by user.
1437 * - decoding: unused
1440 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1441 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1442 #define FF_MB_DECISION_RD 2 ///< rate distoration
1445 * custom intra quantization matrix
1446 * - encoding: set by user, can be NULL
1447 * - decoding: set by lavc
1449 uint16_t *intra_matrix;
1452 * custom inter quantization matrix
1453 * - encoding: set by user, can be NULL
1454 * - decoding: set by lavc
1456 uint16_t *inter_matrix;
1459 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1460 * this is used to workaround some encoder bugs
1461 * - encoding: unused
1462 * - decoding: set by user, will be converted to upper case by lavc during init
1464 unsigned int stream_codec_tag;
1467 * scene change detection threshold.
1468 * 0 is default, larger means fewer detected scene changes
1469 * - encoding: set by user.
1470 * - decoding: unused
1472 int scenechange_threshold;
1475 * minimum lagrange multipler
1476 * - encoding: set by user.
1477 * - decoding: unused
1482 * maximum lagrange multipler
1483 * - encoding: set by user.
1484 * - decoding: unused
1489 * Palette control structure
1490 * - encoding: ??? (no palette-enabled encoder yet)
1491 * - decoding: set by user.
1493 struct AVPaletteControl *palctrl;
1496 * noise reduction strength
1497 * - encoding: set by user.
1498 * - decoding: unused
1500 int noise_reduction;
1503 * called at the beginning of a frame to get cr buffer for it.
1504 * buffer type (size, hints) must be the same. lavc won't check it.
1505 * lavc will pass previous buffer in pic, function should return
1506 * same buffer or new buffer with old frame "painted" into it.
1507 * if pic.data[0] == NULL must behave like get_buffer().
1508 * - encoding: unused
1509 * - decoding: set by lavc, user can override
1511 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1514 * number of bits which should be loaded into the rc buffer before decoding starts
1515 * - encoding: set by user.
1516 * - decoding: unused
1518 int rc_initial_buffer_occupancy;
1522 * - encoding: set by user.
1523 * - decoding: unused
1525 int inter_threshold;
1529 * - encoding: set by user.
1530 * - decoding: set by user.
1535 * simulates errors in the bitstream to test error concealment.
1536 * - encoding: set by user.
1537 * - decoding: unused.
1542 * MP3 antialias algorithm, see FF_AA_* below.
1543 * - encoding: unused
1544 * - decoding: set by user
1547 #define FF_AA_AUTO 0
1548 #define FF_AA_FASTINT 1 //not implemented yet
1550 #define FF_AA_FLOAT 3
1552 * Quantizer noise shaping.
1553 * - encoding: set by user
1554 * - decoding: unused
1556 int quantizer_noise_shaping;
1560 * is used to decide how many independant tasks should be passed to execute()
1561 * - encoding: set by user
1562 * - decoding: set by user
1567 * the codec may call this to execute several independant things. it will return only after
1568 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1569 * default implementation will execute the parts serially
1570 * @param count the number of things to execute
1571 * - encoding: set by lavc, user can override
1572 * - decoding: set by lavc, user can override
1574 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1578 * can be used by execute() to store some per AVCodecContext stuff.
1579 * - encoding: set by execute()
1580 * - decoding: set by execute()
1582 void *thread_opaque;
1585 * Motion estimation threshold. under which no motion estimation is
1586 * performed, but instead the user specified motion vectors are used
1588 * - encoding: set by user
1589 * - decoding: unused
1594 * Macroblock threshold. under which the user specified macroblock types will be used
1595 * - encoding: set by user
1596 * - decoding: unused
1601 * precision of the intra dc coefficient - 8.
1602 * - encoding: set by user
1603 * - decoding: unused
1605 int intra_dc_precision;
1608 * noise vs. sse weight for the nsse comparsion function.
1609 * - encoding: set by user
1610 * - decoding: unused
1615 * number of macroblock rows at the top which are skiped.
1616 * - encoding: unused
1617 * - decoding: set by user
1622 * number of macroblock rows at the bottom which are skiped.
1623 * - encoding: unused
1624 * - decoding: set by user
1630 * - encoding: set by user
1631 * - decoding: set by lavc
1634 #define FF_PROFILE_UNKNOWN -99
1638 * - encoding: set by user
1639 * - decoding: set by lavc
1642 #define FF_LEVEL_UNKNOWN -99
1649 typedef struct AVOption {
1650 /** options' name */
1651 const char *name; /* if name is NULL, it indicates a link to next */
1652 /** short English text help or const struct AVOption* subpointer */
1653 const char *help; // const struct AVOption* sub;
1654 /** offset to context structure where the parsed value should be stored */
1656 /** options' type */
1658 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1659 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1660 #define FF_OPT_TYPE_INT 3 ///< integer
1661 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1662 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1663 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1664 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1665 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1666 /** min value (min == max -> no limits) */
1668 /** maximum value for double/int */
1670 /** default boo [0,1]l/double/int value */
1673 * default string value (with optional semicolon delimited extra option-list
1674 * i.e. option1;option2;option3
1675 * defval might select other then first argument as default
1678 #define FF_OPT_MAX_DEPTH 10
1682 * Parse option(s) and sets fields in passed structure
1683 * @param strct structure where the parsed results will be written
1684 * @param list list with AVOptions
1685 * @param opts string with options for parsing
1687 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1693 typedef struct AVCodec {
1695 enum CodecType type;
1698 int (*init)(AVCodecContext *);
1699 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1700 int (*close)(AVCodecContext *);
1701 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1702 uint8_t *buf, int buf_size);
1704 const AVOption *options;
1705 struct AVCodec *next;
1706 void (*flush)(AVCodecContext *);
1707 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1708 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1712 * four components are given, that's all.
1713 * the last component is alpha
1715 typedef struct AVPicture {
1717 int linesize[4]; ///< number of bytes per line
1722 * This structure defines a method for communicating palette changes
1723 * between and demuxer and a decoder.
1725 #define AVPALETTE_SIZE 1024
1726 #define AVPALETTE_COUNT 256
1727 typedef struct AVPaletteControl {
1729 /* demuxer sets this to 1 to indicate the palette has changed;
1730 * decoder resets to 0 */
1731 int palette_changed;
1733 /* 4-byte ARGB palette entries, stored in native byte order; note that
1734 * the individual palette components should be on a 8-bit scale; if
1735 * the palette data comes from a IBM VGA native format, the component
1736 * data is probably 6 bits in size and needs to be scaled */
1737 unsigned int palette[AVPALETTE_COUNT];
1741 extern AVCodec ac3_encoder;
1742 extern AVCodec mp2_encoder;
1743 extern AVCodec mp3lame_encoder;
1744 extern AVCodec oggvorbis_encoder;
1745 extern AVCodec faac_encoder;
1746 extern AVCodec xvid_encoder;
1747 extern AVCodec mpeg1video_encoder;
1748 extern AVCodec mpeg2video_encoder;
1749 extern AVCodec h263_encoder;
1750 extern AVCodec h263p_encoder;
1751 extern AVCodec flv_encoder;
1752 extern AVCodec rv10_encoder;
1753 extern AVCodec rv20_encoder;
1754 extern AVCodec dvvideo_encoder;
1755 extern AVCodec mjpeg_encoder;
1756 extern AVCodec ljpeg_encoder;
1757 extern AVCodec mpeg4_encoder;
1758 extern AVCodec msmpeg4v1_encoder;
1759 extern AVCodec msmpeg4v2_encoder;
1760 extern AVCodec msmpeg4v3_encoder;
1761 extern AVCodec wmv1_encoder;
1762 extern AVCodec wmv2_encoder;
1763 extern AVCodec huffyuv_encoder;
1764 extern AVCodec h264_encoder;
1765 extern AVCodec asv1_encoder;
1766 extern AVCodec asv2_encoder;
1767 extern AVCodec vcr1_encoder;
1768 extern AVCodec ffv1_encoder;
1769 extern AVCodec snow_encoder;
1770 extern AVCodec mdec_encoder;
1771 extern AVCodec zlib_encoder;
1772 extern AVCodec svq1_encoder;
1774 extern AVCodec h263_decoder;
1775 extern AVCodec h261_decoder;
1776 extern AVCodec mpeg4_decoder;
1777 extern AVCodec msmpeg4v1_decoder;
1778 extern AVCodec msmpeg4v2_decoder;
1779 extern AVCodec msmpeg4v3_decoder;
1780 extern AVCodec wmv1_decoder;
1781 extern AVCodec wmv2_decoder;
1782 extern AVCodec mpeg1video_decoder;
1783 extern AVCodec mpeg2video_decoder;
1784 extern AVCodec mpegvideo_decoder;
1785 extern AVCodec mpeg_xvmc_decoder;
1786 extern AVCodec h263i_decoder;
1787 extern AVCodec flv_decoder;
1788 extern AVCodec rv10_decoder;
1789 extern AVCodec rv20_decoder;
1790 extern AVCodec svq1_decoder;
1791 extern AVCodec svq3_decoder;
1792 extern AVCodec dvvideo_decoder;
1793 extern AVCodec wmav1_decoder;
1794 extern AVCodec wmav2_decoder;
1795 extern AVCodec mjpeg_decoder;
1796 extern AVCodec mjpegb_decoder;
1797 extern AVCodec sp5x_decoder;
1798 extern AVCodec mp2_decoder;
1799 extern AVCodec mp3_decoder;
1800 extern AVCodec mace3_decoder;
1801 extern AVCodec mace6_decoder;
1802 extern AVCodec huffyuv_decoder;
1803 extern AVCodec oggvorbis_decoder;
1804 extern AVCodec cyuv_decoder;
1805 extern AVCodec h264_decoder;
1806 extern AVCodec indeo3_decoder;
1807 extern AVCodec vp3_decoder;
1808 extern AVCodec theora_decoder;
1809 extern AVCodec amr_nb_decoder;
1810 extern AVCodec amr_nb_encoder;
1811 extern AVCodec amr_wb_encoder;
1812 extern AVCodec amr_wb_decoder;
1813 extern AVCodec aac_decoder;
1814 extern AVCodec mpeg4aac_decoder;
1815 extern AVCodec asv1_decoder;
1816 extern AVCodec asv2_decoder;
1817 extern AVCodec vcr1_decoder;
1818 extern AVCodec cljr_decoder;
1819 extern AVCodec ffv1_decoder;
1820 extern AVCodec snow_decoder;
1821 extern AVCodec fourxm_decoder;
1822 extern AVCodec mdec_decoder;
1823 extern AVCodec roq_decoder;
1824 extern AVCodec interplay_video_decoder;
1825 extern AVCodec xan_wc3_decoder;
1826 extern AVCodec rpza_decoder;
1827 extern AVCodec cinepak_decoder;
1828 extern AVCodec msrle_decoder;
1829 extern AVCodec msvideo1_decoder;
1830 extern AVCodec vqa_decoder;
1831 extern AVCodec idcin_decoder;
1832 extern AVCodec eightbps_decoder;
1833 extern AVCodec smc_decoder;
1834 extern AVCodec flic_decoder;
1835 extern AVCodec vmdvideo_decoder;
1836 extern AVCodec vmdaudio_decoder;
1837 extern AVCodec truemotion1_decoder;
1838 extern AVCodec mszh_decoder;
1839 extern AVCodec zlib_decoder;
1840 extern AVCodec ra_144_decoder;
1841 extern AVCodec ra_288_decoder;
1842 extern AVCodec roq_dpcm_decoder;
1843 extern AVCodec interplay_dpcm_decoder;
1844 extern AVCodec xan_dpcm_decoder;
1845 extern AVCodec qtrle_decoder;
1846 extern AVCodec flac_decoder;
1849 #define PCM_CODEC(id, name) \
1850 extern AVCodec name ## _decoder; \
1851 extern AVCodec name ## _encoder
1853 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1854 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1855 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1856 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1857 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1858 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1859 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1860 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1864 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1865 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1866 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1867 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1868 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1869 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1870 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1871 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1872 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1873 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1874 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1875 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1879 /* dummy raw video codec */
1880 extern AVCodec rawvideo_encoder;
1881 extern AVCodec rawvideo_decoder;
1883 /* the following codecs use external GPL libs */
1884 extern AVCodec ac3_decoder;
1885 extern AVCodec dts_decoder;
1889 struct ReSampleContext;
1890 struct AVResampleContext;
1892 typedef struct ReSampleContext ReSampleContext;
1894 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1895 int output_rate, int input_rate);
1896 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1897 void audio_resample_close(ReSampleContext *s);
1899 struct AVResampleContext *av_resample_init(int out_rate, int in_rate);
1900 int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
1901 void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
1902 void av_resample_close(struct AVResampleContext *c);
1904 /* YUV420 format is assumed ! */
1906 struct ImgReSampleContext;
1908 typedef struct ImgReSampleContext ImgReSampleContext;
1910 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1911 int input_width, int input_height);
1913 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1914 int iwidth, int iheight,
1915 int topBand, int bottomBand,
1916 int leftBand, int rightBand,
1917 int padtop, int padbottom,
1918 int padleft, int padright);
1921 void img_resample(ImgReSampleContext *s,
1922 AVPicture *output, const AVPicture *input);
1924 void img_resample_close(ImgReSampleContext *s);
1927 * Allocate memory for a picture. Call avpicture_free to free it.
1929 * @param picture the picture to be filled in.
1930 * @param pix_fmt the format of the picture.
1931 * @param width the width of the picture.
1932 * @param height the height of the picture.
1933 * @return 0 if successful, -1 if not.
1935 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1937 /* Free a picture previously allocated by avpicture_alloc. */
1938 void avpicture_free(AVPicture *picture);
1940 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1941 int pix_fmt, int width, int height);
1942 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1943 unsigned char *dest, int dest_size);
1944 int avpicture_get_size(int pix_fmt, int width, int height);
1945 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1946 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1947 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1949 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1950 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1951 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1952 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1953 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1954 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1956 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1958 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1959 int has_alpha, int *loss_ptr);
1961 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1962 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1963 int img_get_alpha_info(const AVPicture *src,
1964 int pix_fmt, int width, int height);
1966 /* convert among pixel formats */
1967 int img_convert(AVPicture *dst, int dst_pix_fmt,
1968 const AVPicture *src, int pix_fmt,
1969 int width, int height);
1971 /* deinterlace a picture */
1972 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1973 int pix_fmt, int width, int height);
1975 /* external high level API */
1977 extern AVCodec *first_avcodec;
1979 /* returns LIBAVCODEC_VERSION_INT constant */
1980 unsigned avcodec_version(void);
1981 /* returns LIBAVCODEC_BUILD constant */
1982 unsigned avcodec_build(void);
1983 void avcodec_init(void);
1985 void register_avcodec(AVCodec *format);
1986 AVCodec *avcodec_find_encoder(enum CodecID id);
1987 AVCodec *avcodec_find_encoder_by_name(const char *name);
1988 AVCodec *avcodec_find_decoder(enum CodecID id);
1989 AVCodec *avcodec_find_decoder_by_name(const char *name);
1990 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1992 void avcodec_get_context_defaults(AVCodecContext *s);
1993 AVCodecContext *avcodec_alloc_context(void);
1994 void avcodec_get_frame_defaults(AVFrame *pic);
1995 AVFrame *avcodec_alloc_frame(void);
1997 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1998 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1999 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
2000 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
2001 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
2003 int avcodec_thread_init(AVCodecContext *s, int thread_count);
2004 void avcodec_thread_free(AVCodecContext *s);
2005 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2006 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
2007 //FIXME func typedef
2010 * opens / inits the AVCodecContext.
2013 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
2015 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
2016 int *frame_size_ptr,
2017 uint8_t *buf, int buf_size);
2018 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
2019 int *got_picture_ptr,
2020 uint8_t *buf, int buf_size);
2021 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
2023 uint8_t *buf, int buf_size);
2024 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2025 const short *samples);
2026 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2027 const AVFrame *pict);
2029 int avcodec_close(AVCodecContext *avctx);
2031 void avcodec_register_all(void);
2033 void avcodec_flush_buffers(AVCodecContext *avctx);
2035 /* misc usefull functions */
2038 * returns a single letter to describe the picture type
2040 char av_get_pict_type_char(int pict_type);
2043 * reduce a fraction.
2044 * this is usefull for framerate calculations
2045 * @param max the maximum allowed for dst_nom & dst_den
2046 * @return 1 if exact, 0 otherwise
2048 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
2051 * rescale a 64bit integer.
2052 * a simple a*b/c isnt possible as it can overflow
2054 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2058 * Interface for 0.5.0 version
2060 * do not even think about it's usage for this moment
2064 /// compressed size used from given memory buffer
2066 /// I/P/B frame type
2072 * order can't be changed - once it was defined
2076 AVC_OPEN_BY_NAME = 0xACA000,
2077 AVC_OPEN_BY_CODEC_ID,
2082 // pin - struct { uint8_t* src, uint_t src_size }
2083 // pout - struct { AVPicture* img, consumed_bytes,
2085 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2086 // pout - uint_t used_from_dest_size
2089 // query/get video commands
2090 AVC_GET_VERSION = 0xACB000,
2094 AVC_GET_QUANT_TABLE,
2097 // query/get audio commands
2098 AVC_GET_FRAME_SIZE = 0xABC000,
2100 // maybe define some simple structure which
2101 // might be passed to the user - but they can't
2102 // contain any codec specific parts and these
2103 // calls are usualy necessary only few times
2105 // set video commands
2106 AVC_SET_WIDTH = 0xACD000,
2109 // set video encoding commands
2110 AVC_SET_FRAME_RATE = 0xACD800,
2114 // set audio commands
2115 AVC_SET_SAMPLE_RATE = 0xACE000,
2121 * \param handle allocated private structure by libavcodec
2122 * for initialization pass NULL - will be returned pout
2123 * user is supposed to know nothing about its structure
2124 * \param cmd type of operation to be performed
2125 * \param pint input parameter
2126 * \param pout output parameter
2128 * \returns command status - eventually for query command it might return
2129 * integer resulting value
2131 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2134 typedef struct AVCodecParserContext {
2136 struct AVCodecParser *parser;
2137 int64_t frame_offset; /* offset of the current frame */
2138 int64_t cur_offset; /* current offset
2139 (incremented by each av_parser_parse()) */
2140 int64_t last_frame_offset; /* offset of the last frame */
2142 int pict_type; /* XXX: put it back in AVCodecContext */
2143 int repeat_pict; /* XXX: put it back in AVCodecContext */
2144 int64_t pts; /* pts of the current frame */
2145 int64_t dts; /* dts of the current frame */
2150 int fetch_timestamp;
2152 #define AV_PARSER_PTS_NB 4
2153 int cur_frame_start_index;
2154 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2155 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2156 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2157 } AVCodecParserContext;
2159 typedef struct AVCodecParser {
2160 int codec_ids[3]; /* several codec IDs are permitted */
2162 int (*parser_init)(AVCodecParserContext *s);
2163 int (*parser_parse)(AVCodecParserContext *s,
2164 AVCodecContext *avctx,
2165 uint8_t **poutbuf, int *poutbuf_size,
2166 const uint8_t *buf, int buf_size);
2167 void (*parser_close)(AVCodecParserContext *s);
2168 struct AVCodecParser *next;
2171 extern AVCodecParser *av_first_parser;
2173 void av_register_codec_parser(AVCodecParser *parser);
2174 AVCodecParserContext *av_parser_init(int codec_id);
2175 int av_parser_parse(AVCodecParserContext *s,
2176 AVCodecContext *avctx,
2177 uint8_t **poutbuf, int *poutbuf_size,
2178 const uint8_t *buf, int buf_size,
2179 int64_t pts, int64_t dts);
2180 void av_parser_close(AVCodecParserContext *s);
2182 extern AVCodecParser mpegvideo_parser;
2183 extern AVCodecParser mpeg4video_parser;
2184 extern AVCodecParser h261_parser;
2185 extern AVCodecParser h263_parser;
2186 extern AVCodecParser h264_parser;
2187 extern AVCodecParser mpegaudio_parser;
2188 extern AVCodecParser ac3_parser;
2191 void *av_malloc(unsigned int size);
2192 void *av_mallocz(unsigned int size);
2193 void *av_realloc(void *ptr, unsigned int size);
2194 void av_free(void *ptr);
2195 char *av_strdup(const char *s);
2196 void av_freep(void *ptr);
2197 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2198 /* for static data only */
2199 /* call av_free_static to release all staticaly allocated tables */
2200 void av_free_static(void);
2201 void *av_mallocz_static(unsigned int size);
2203 /* add by bero : in adx.c */
2204 int is_adx(const unsigned char *buf,size_t bufsize);
2206 void img_copy(AVPicture *dst, const AVPicture *src,
2207 int pix_fmt, int width, int height);
2213 #define AV_LOG_QUIET -1
2214 #define AV_LOG_ERROR 0
2215 #define AV_LOG_INFO 1
2216 #define AV_LOG_DEBUG 2
2219 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2221 extern void av_log(void*, int level, const char *fmt, ...);
2224 extern void av_vlog(void*, int level, const char *fmt, va_list);
2225 extern int av_log_get_level(void);
2226 extern void av_log_set_level(int);
2227 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2230 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2231 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2232 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2233 (((uint8_t*)(x))[1] << 16) | \
2234 (((uint8_t*)(x))[2] << 8) | \
2236 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2237 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2238 (((uint8_t*)(x))[2] << 16) | \
2239 (((uint8_t*)(x))[1] << 8) | \
2247 #endif /* AVCODEC_H */