16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000408
19 #define FFMPEG_VERSION "0.4.8"
20 #define LIBAVCODEC_BUILD 4715
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,
102 /* various pcm "codecs" */
112 /* various adpcm codecs */
113 CODEC_ID_ADPCM_IMA_QT,
114 CODEC_ID_ADPCM_IMA_WAV,
115 CODEC_ID_ADPCM_IMA_DK3,
116 CODEC_ID_ADPCM_IMA_DK4,
117 CODEC_ID_ADPCM_IMA_WS,
118 CODEC_ID_ADPCM_IMA_SMJPEG,
130 /* RealAudio codecs*/
134 /* various DPCM codecs */
136 CODEC_ID_INTERPLAY_DPCM,
141 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
142 stream (only used by libavformat) */
145 /* CODEC_ID_MP3LAME is absolete */
146 #define CODEC_ID_MP3LAME CODEC_ID_MP3
149 CODEC_TYPE_UNKNOWN = -1,
156 * Pixel format. Notes:
158 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
159 * color is put together as:
160 * (A << 24) | (R << 16) | (G << 8) | B
161 * This is stored as BGRA on little endian CPU architectures and ARGB on
164 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
165 * image data is stored in AVFrame.data[0]. The palette is transported in
166 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
167 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
168 * also endian-specific). Note also that the individual RGB palette
169 * components stored in AVFrame.data[1] should be in the range 0..255.
170 * This is important as many custom PAL8 video codecs that were designed
171 * to run on the IBM VGA graphics adapter use 6-bit palette components.
174 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
176 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
177 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
178 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
179 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
180 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
181 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
182 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
183 PIX_FMT_RGB565, ///< always stored in cpu endianness
184 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
186 PIX_FMT_MONOWHITE, ///< 0 is white
187 PIX_FMT_MONOBLACK, ///< 0 is black
188 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
189 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
190 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
191 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
192 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
193 PIX_FMT_XVMC_MPEG2_IDCT,
197 /* currently unused, may be used if 24/32 bits samples ever supported */
199 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
203 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
206 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
207 * this is mainly needed because some optimized bitstream readers read
208 * 32 or 64 bit at once and could read over the end<br>
209 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
210 * MPEG bitstreams could cause overread and segfault
212 #define FF_INPUT_BUFFER_PADDING_SIZE 8
214 /* motion estimation type, EPZS by default */
224 typedef struct RcOverride{
227 int qscale; // if this is 0 then quality_factor will be used instead
228 float quality_factor;
231 /* only for ME compatiblity with old apps */
232 extern int motion_estimation_method;
234 #define FF_MAX_B_FRAMES 8
237 these flags can be passed in AVCodecContext.flags before initing
238 Note: note not everything is supported yet
241 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
242 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
243 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
244 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
245 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
246 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
247 /* parent program gurantees that the input for b-frame containing streams is not written to
248 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
249 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
250 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
251 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
252 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
253 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
254 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
255 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
256 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
257 of only at frame boundaries */
258 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
259 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
260 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
261 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
262 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
263 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
264 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
265 /* Fx : Flag for h263+ extra options */
266 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
267 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
268 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
269 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
270 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
271 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
272 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
273 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
274 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
275 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
276 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
277 #define CODEC_FLAG_CLOSED_GOP 0x80000000
278 /* Unsupported options :
279 * Syntax Arithmetic coding (SAC)
280 * Reference Picture Selection
281 * Independant Segment Decoding */
283 /* codec capabilities */
285 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
287 * Codec uses get_buffer() for allocating buffers.
288 * direct rendering method 1
290 #define CODEC_CAP_DR1 0x0002
291 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
293 #define CODEC_CAP_PARSE_ONLY 0x0004
294 #define CODEC_CAP_TRUNCATED 0x0008
295 /* codec can export data for HW decoding (XvMC) */
296 #define CODEC_CAP_HWACCEL 0x0010
298 //the following defines might change, so dont expect compatibility if u use them
299 #define MB_TYPE_INTRA4x4 0x0001
300 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
301 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
302 #define MB_TYPE_16x16 0x0008
303 #define MB_TYPE_16x8 0x0010
304 #define MB_TYPE_8x16 0x0020
305 #define MB_TYPE_8x8 0x0040
306 #define MB_TYPE_INTERLACED 0x0080
307 #define MB_TYPE_DIRECT2 0x0100 //FIXME
308 #define MB_TYPE_ACPRED 0x0200
309 #define MB_TYPE_GMC 0x0400
310 #define MB_TYPE_SKIP 0x0800
311 #define MB_TYPE_P0L0 0x1000
312 #define MB_TYPE_P1L0 0x2000
313 #define MB_TYPE_P0L1 0x4000
314 #define MB_TYPE_P1L1 0x8000
315 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
316 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
317 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
318 #define MB_TYPE_QUANT 0x00010000
319 #define MB_TYPE_CBP 0x00020000
320 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
324 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
326 typedef struct AVPanScan{
329 * - encoding: set by user.
330 * - decoding: set by lavc
335 * width and height in 1/16 pel
336 * - encoding: set by user.
337 * - decoding: set by lavc
343 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
344 * - encoding: set by user.
345 * - decoding: set by lavc
347 int16_t position[3][2];
350 #define FF_COMMON_FRAME \
352 * pointer to the picture planes.\
353 * this might be different from the first allocated byte\
360 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
361 * this isnt used by lavc unless the default get/release_buffer() is used\
367 * 1 -> keyframe, 0-> not\
368 * - encoding: set by lavc\
369 * - decoding: set by lavc\
374 * picture type of the frame, see ?_TYPE below.\
375 * - encoding: set by lavc for coded_picture (and set by user for input)\
376 * - decoding: set by lavc\
381 * presentation timestamp in AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user)\
382 * if AV_NOPTS_VALUE then the frame_rate will be used as reference\
383 * - encoding: MUST be set by user\
384 * - decoding: set by lavc\
389 * picture number in bitstream order.\
390 * - encoding: set by\
391 * - decoding: set by lavc\
393 int coded_picture_number;\
395 * picture number in display order.\
396 * - encoding: set by\
397 * - decoding: set by lavc\
399 int display_picture_number;\
402 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
403 * - encoding: set by lavc for coded_picture (and set by user for input)\
404 * - decoding: set by lavc\
409 * buffer age (1->was last buffer and dint change, 2->..., ...).\
410 * set to INT_MAX if the buffer has not been used yet \
411 * - encoding: unused\
412 * - decoding: MUST be set by get_buffer()\
417 * is this picture used as reference\
418 * - encoding: unused\
419 * - decoding: set by lavc (before get_buffer() call))\
425 * - encoding: unused\
426 * - decoding: set by lavc\
428 int8_t *qscale_table;\
431 * - encoding: unused\
432 * - decoding: set by lavc\
437 * mbskip_table[mb]>=1 if MB didnt change\
438 * stride= mb_width = (width+15)>>4\
439 * - encoding: unused\
440 * - decoding: set by lavc\
442 uint8_t *mbskip_table;\
445 * Motion vector table\
446 * - encoding: set by user\
447 * - decoding: set by lavc\
449 int16_t (*motion_val[2])[2];\
452 * Macroblock type table\
453 * mb_type_base + mb_width + 2\
454 * - encoding: set by user\
455 * - decoding: set by lavc\
460 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
461 * - encoding: unused\
462 * - decoding: set by lavc\
464 uint8_t motion_subsample_log2;\
467 * for some private data of the user\
468 * - encoding: unused\
469 * - decoding: set by user\
475 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
476 * - decoding: unused\
481 * type of the buffer (to keep track of who has to dealloc data[*])\
482 * - encoding: set by the one who allocs it\
483 * - decoding: set by the one who allocs it\
484 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
489 * when decoding, this signal how much the picture must be delayed.\
490 * extra_delay = repeat_pict / (2*fps)\
491 * - encoding: unused\
492 * - decoding: set by lavc\
502 * The content of the picture is interlaced.\
503 * - encoding: set by user\
504 * - decoding: set by lavc (default 0)\
506 int interlaced_frame;\
509 * if the content is interlaced, is top field displayed first.\
510 * - encoding: set by user\
511 * - decoding: set by lavc\
513 int top_field_first;\
517 * - encoding: set by user\
518 * - decoding: set by lavc\
520 AVPanScan *pan_scan;\
523 * tell user application that palette has changed from previous frame.\
524 * - encoding: ??? (no palette-enabled encoder yet)\
525 * - decoding: set by lavc (default 0)\
527 int palette_has_changed;\
530 * Codec suggestion on buffer type if != 0\
531 * - encoding: unused\
532 * - decoding: set by lavc (before get_buffer() call))\
538 * - encoding: unused\
539 * - decoding: set by lavc\
544 * Motion referece frame index\
545 * - encoding: set by user\
546 * - decoding: set by lavc\
548 int8_t *ref_index[2];
550 #define FF_QSCALE_TYPE_MPEG1 0
551 #define FF_QSCALE_TYPE_MPEG2 1
553 #define FF_BUFFER_TYPE_INTERNAL 1
554 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
555 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base), all other tables are not shared
556 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
559 #define FF_I_TYPE 1 // Intra
560 #define FF_P_TYPE 2 // Predicted
561 #define FF_B_TYPE 3 // Bi-dir predicted
562 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
566 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
567 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
568 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
569 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
574 typedef struct AVFrame {
578 #define DEFAULT_FRAME_RATE_BASE 1001000
583 typedef struct AVCLASS AVClass;
585 const char* class_name;
586 const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
587 or AVFormatContext, which begin with an AVClass.
588 Needed because av_log is in libavcodec and has no visibility
589 of AVIn/OutputFormat */
593 * main external api structure.
595 typedef struct AVCodecContext {
597 * Info on struct for av_log
598 * - set by avcodec_alloc_context
602 * the average bitrate.
603 * - encoding: set by user. unused for constant quantizer encoding
604 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
609 * number of bits the bitstream is allowed to diverge from the reference.
610 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
611 * - encoding: set by user. unused for constant quantizer encoding
614 int bit_rate_tolerance;
618 * - encoding: set by user.
619 * - decoding: set by user.
624 * some codecs needs additionnal format info. It is stored here
625 * - encoding: set by user.
626 * - decoding: set by lavc. (FIXME is this ok?)
631 * motion estimation algorithm used for video coding.
632 * - encoding: MUST be set by user.
638 * some codecs need / can use extra-data like huffman tables.
639 * mjpeg: huffman tables
640 * rv10: additional flags
641 * mpeg4: global headers (they can be in the bitstream or here)
642 * - encoding: set/allocated/freed by lavc.
643 * - decoding: set/allocated/freed by user.
650 * frames per sec multiplied by frame_rate_base.
651 * for variable fps this is the precission, so if the timestamps
652 * can be specified in msec precssion then this is 1000*frame_rate_base
653 * - encoding: MUST be set by user
654 * - decoding: set by lavc. 0 or the frame_rate if available
660 * - encoding: MUST be set by user.
661 * - decoding: set by user if known, codec should override / dynamically change if needed
665 #define FF_ASPECT_EXTENDED 15
668 * the number of pictures in a group of pitures, or 0 for intra_only.
669 * - encoding: set by user.
675 * pixel format, see PIX_FMT_xxx.
676 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
677 * conversion is in order. This only works for
678 * codecs with one supported pix_fmt, we should
679 * do something for a generic case as well.
680 * - decoding: set by lavc.
682 enum PixelFormat pix_fmt;
685 * Frame rate emulation. If not zero lower layer (i.e. format handler)
686 * has to read frames at native frame rate.
687 * - encoding: set by user.
688 * - decoding: unused.
693 * if non NULL, 'draw_horiz_band' is called by the libavcodec
694 * decoder to draw an horizontal band. It improve cache usage. Not
695 * all codecs can do that. You must check the codec capabilities
698 * - decoding: set by user.
699 * @param height the height of the slice
700 * @param y the y position of the slice
701 * @param type 1->top field, 2->bottom field, 3->frame
702 * @param offset offset into the AVFrame.data from which the slice should be read
704 void (*draw_horiz_band)(struct AVCodecContext *s,
705 const AVFrame *src, int offset[4],
706 int y, int type, int height);
709 int sample_rate; ///< samples per sec
711 int sample_fmt; ///< sample format, currenly unused
713 /* the following data should not be initialized */
714 int frame_size; ///< in samples, initialized when calling 'init'
715 int frame_number; ///< audio or video frame number
716 int real_pict_num; ///< returns the real picture number of previous encoded frame
719 * number of frames the decoded output will be delayed relative to
721 * - encoding: set by lavc.
726 /* - encoding parameters */
727 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
728 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
732 * - encoding: set by user.
739 * - encoding: set by user.
745 * maximum quantizer difference etween frames.
746 * - encoding: set by user.
752 * maximum number of b frames between non b frames.
753 * note: the output will be delayed by max_b_frames+1 relative to the input
754 * - encoding: set by user.
760 * qscale factor between ip and b frames.
761 * - encoding: set by user.
764 float b_quant_factor;
766 /** obsolete FIXME remove */
768 int b_frame_strategy;
773 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
777 struct AVCodec *codec;
781 /* unused, FIXME remove*/
784 int rtp_payload_size; /* The size of the RTP payload, the coder will */
785 /* do it's best to deliver a chunk with size */
786 /* below rtp_payload_size, the chunk will start */
787 /* with a start code on some codecs like H.263 */
788 /* This doesn't take account of any particular */
789 /* headers inside the transmited RTP payload */
792 /* The RTP callcack: This function is called */
793 /* every time the encoder as a packet to send */
794 /* Depends on the encoder if the data starts */
795 /* with a Start Code (it should) H.263 does */
796 void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number);
798 /* statistics, used for 2-pass encoding */
809 * number of bits used for the previously encoded frame.
810 * - encoding: set by lavc
816 * private data of the user, can be used to carry app specific stuff.
817 * - encoding: set by user
818 * - decoding: set by user
823 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
824 enum CodecID codec_id; /* see CODEC_ID_xxx */
827 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
828 * this is used to workaround some encoder bugs
829 * - encoding: set by user, if not then the default based on codec_id will be used
830 * - decoding: set by user, will be converted to upper case by lavc during init
832 unsigned int codec_tag;
835 * workaround bugs in encoders which sometimes cannot be detected automatically.
837 * - decoding: set by user
840 #define FF_BUG_AUTODETECT 1 ///< autodetection
841 #define FF_BUG_OLD_MSMPEG4 2
842 #define FF_BUG_XVID_ILACE 4
843 #define FF_BUG_UMP4 8
844 #define FF_BUG_NO_PADDING 16
845 #define FF_BUG_AMV 32
846 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
847 #define FF_BUG_QPEL_CHROMA 64
848 #define FF_BUG_STD_QPEL 128
849 #define FF_BUG_QPEL_CHROMA2 256
850 #define FF_BUG_DIRECT_BLOCKSIZE 512
851 #define FF_BUG_EDGE 1024
852 #define FF_BUG_HPEL_CHROMA 2048
853 #define FF_BUG_DC_CLIP 4096
854 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
857 * luma single coeff elimination threshold.
858 * - encoding: set by user
861 int luma_elim_threshold;
864 * chroma single coeff elimination threshold.
865 * - encoding: set by user
868 int chroma_elim_threshold;
871 * strictly follow the std (MPEG4, ...).
872 * - encoding: set by user
875 int strict_std_compliance;
878 * qscale offset between ip and b frames.
879 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
880 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
881 * - encoding: set by user.
884 float b_quant_offset;
887 * error resilience higher values will detect more errors but may missdetect
888 * some more or less valid parts as errors.
890 * - decoding: set by user
892 int error_resilience;
893 #define FF_ER_CAREFULL 1
894 #define FF_ER_COMPLIANT 2
895 #define FF_ER_AGGRESSIVE 3
896 #define FF_ER_VERY_AGGRESSIVE 4
899 * called at the beginning of each frame to get a buffer for it.
900 * if pic.reference is set then the frame will be read later by lavc
901 * avcodec_align_dimensions() should be used to find the required width and
902 * height, as they normally need to be rounded up to the next multiple of 16
904 * - decoding: set by lavc, user can override
906 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
909 * called to release buffers which where allocated with get_buffer.
910 * a released buffer can be reused in get_buffer()
911 * pic.data[*] must be set to NULL
913 * - decoding: set by lavc, user can override
915 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
918 * if 1 the stream has a 1 frame delay during decoding.
919 * - encoding: set by lavc
920 * - decoding: set by lavc
924 int block_align; ///< used by some WAV based audio codecs
926 int parse_only; /* - decoding only: if true, only parsing is done
927 (function avcodec_parse_frame()). The frame
928 data is returned. Only MPEG codecs support this now. */
931 * 0-> h263 quant 1-> mpeg quant.
932 * - encoding: set by user.
938 * pass1 encoding statistics output buffer.
939 * - encoding: set by lavc
945 * pass2 encoding statistics input buffer.
946 * concatenated stuff from stats_out of pass1 should be placed here
947 * - encoding: allocated/set/freed by user
953 * ratecontrol qmin qmax limiting method.
954 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
955 * - encoding: set by user.
964 * ratecontrol override, see RcOverride.
965 * - encoding: allocated/set/freed by user.
968 RcOverride *rc_override;
969 int rc_override_count;
972 * rate control equation.
973 * - encoding: set by user
980 * - encoding: set by user.
987 * - encoding: set by user.
993 * decoder bitstream buffer size.
994 * - encoding: set by user.
998 float rc_buffer_aggressivity;
1001 * qscale factor between p and i frames.
1002 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
1003 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
1004 * - encoding: set by user.
1005 * - decoding: unused
1007 float i_quant_factor;
1010 * qscale offset between p and i frames.
1011 * - encoding: set by user.
1012 * - decoding: unused
1014 float i_quant_offset;
1017 * initial complexity for pass1 ratecontrol.
1018 * - encoding: set by user.
1019 * - decoding: unused
1021 float rc_initial_cplx;
1024 * dct algorithm, see FF_DCT_* below.
1025 * - encoding: set by user
1026 * - decoding: unused
1029 #define FF_DCT_AUTO 0
1030 #define FF_DCT_FASTINT 1
1031 #define FF_DCT_INT 2
1032 #define FF_DCT_MMX 3
1033 #define FF_DCT_MLIB 4
1034 #define FF_DCT_ALTIVEC 5
1035 #define FF_DCT_FAAN 6
1038 * luminance masking (0-> disabled).
1039 * - encoding: set by user
1040 * - decoding: unused
1045 * temporary complexity masking (0-> disabled).
1046 * - encoding: set by user
1047 * - decoding: unused
1049 float temporal_cplx_masking;
1052 * spatial complexity masking (0-> disabled).
1053 * - encoding: set by user
1054 * - decoding: unused
1056 float spatial_cplx_masking;
1059 * p block masking (0-> disabled).
1060 * - encoding: set by user
1061 * - decoding: unused
1066 * darkness masking (0-> disabled).
1067 * - encoding: set by user
1068 * - decoding: unused
1073 /* for binary compatibility */
1077 * idct algorithm, see FF_IDCT_* below.
1078 * - encoding: set by user
1079 * - decoding: set by user
1082 #define FF_IDCT_AUTO 0
1083 #define FF_IDCT_INT 1
1084 #define FF_IDCT_SIMPLE 2
1085 #define FF_IDCT_SIMPLEMMX 3
1086 #define FF_IDCT_LIBMPEG2MMX 4
1087 #define FF_IDCT_PS2 5
1088 #define FF_IDCT_MLIB 6
1089 #define FF_IDCT_ARM 7
1090 #define FF_IDCT_ALTIVEC 8
1091 #define FF_IDCT_SH4 9
1092 #define FF_IDCT_SIMPLEARM 10
1096 * - encoding: set by lavc
1097 * - decoding: set by user (or 0)
1101 * slice offsets in the frame in bytes.
1102 * - encoding: set/allocated by lavc
1103 * - decoding: set/allocated by user (or NULL)
1108 * error concealment flags.
1109 * - encoding: unused
1110 * - decoding: set by user
1112 int error_concealment;
1113 #define FF_EC_GUESS_MVS 1
1114 #define FF_EC_DEBLOCK 2
1117 * dsp_mask could be add used to disable unwanted CPU features
1118 * CPU features (i.e. MMX, SSE. ...)
1120 * with FORCE flag you may instead enable given CPU features
1121 * (Dangerous: usable in case of misdetection, improper usage however will
1122 * result into program crash)
1125 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1126 /* lower 16 bits - CPU features */
1128 #define FF_MM_MMX 0x0001 /* standard MMX */
1129 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1130 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1131 #define FF_MM_SSE 0x0008 /* SSE functions */
1132 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1133 #endif /* HAVE_MMX */
1136 * bits per sample/pixel from the demuxer (needed for huffyuv).
1137 * - encoding: set by lavc
1138 * - decoding: set by user
1140 int bits_per_sample;
1143 * prediction method (needed for huffyuv).
1144 * - encoding: set by user
1145 * - decoding: unused
1147 int prediction_method;
1148 #define FF_PRED_LEFT 0
1149 #define FF_PRED_PLANE 1
1150 #define FF_PRED_MEDIAN 2
1153 * sample aspect ratio (0 if unknown).
1154 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1155 * - encoding: set by user.
1156 * - decoding: set by lavc.
1158 AVRational sample_aspect_ratio;
1161 * the picture in the bitstream.
1162 * - encoding: set by lavc
1163 * - decoding: set by lavc
1165 AVFrame *coded_frame;
1169 * - encoding: set by user.
1170 * - decoding: set by user.
1173 #define FF_DEBUG_PICT_INFO 1
1174 #define FF_DEBUG_RC 2
1175 #define FF_DEBUG_BITSTREAM 4
1176 #define FF_DEBUG_MB_TYPE 8
1177 #define FF_DEBUG_QP 16
1178 #define FF_DEBUG_MV 32
1179 #define FF_DEBUG_DCT_COEFF 0x00000040
1180 #define FF_DEBUG_SKIP 0x00000080
1181 #define FF_DEBUG_STARTCODE 0x00000100
1182 #define FF_DEBUG_PTS 0x00000200
1183 #define FF_DEBUG_ER 0x00000400
1184 #define FF_DEBUG_MMCO 0x00000800
1185 #define FF_DEBUG_BUGS 0x00001000
1186 #define FF_DEBUG_VIS_QP 0x00002000
1187 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1191 * - encoding: set by user.
1192 * - decoding: set by user.
1195 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1196 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1197 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1201 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1202 * - decoding: unused
1207 * minimum MB quantizer.
1208 * - encoding: set by user.
1209 * - decoding: unused
1214 * maximum MB quantizer.
1215 * - encoding: set by user.
1216 * - decoding: unused
1221 * motion estimation compare function.
1222 * - encoding: set by user.
1223 * - decoding: unused
1227 * subpixel motion estimation compare function.
1228 * - encoding: set by user.
1229 * - decoding: unused
1233 * macroblock compare function (not supported yet).
1234 * - encoding: set by user.
1235 * - decoding: unused
1239 * interlaced dct compare function
1240 * - encoding: set by user.
1241 * - decoding: unused
1244 #define FF_CMP_SAD 0
1245 #define FF_CMP_SSE 1
1246 #define FF_CMP_SATD 2
1247 #define FF_CMP_DCT 3
1248 #define FF_CMP_PSNR 4
1249 #define FF_CMP_BIT 5
1251 #define FF_CMP_ZERO 7
1252 #define FF_CMP_VSAD 8
1253 #define FF_CMP_VSSE 9
1254 #define FF_CMP_NSSE 10
1255 #define FF_CMP_CHROMA 256
1258 * ME diamond size & shape.
1259 * - encoding: set by user.
1260 * - decoding: unused
1265 * amount of previous MV predictors (2a+1 x 2a+1 square).
1266 * - encoding: set by user.
1267 * - decoding: unused
1269 int last_predictor_count;
1272 * pre pass for motion estimation.
1273 * - encoding: set by user.
1274 * - decoding: unused
1279 * motion estimation pre pass compare function.
1280 * - encoding: set by user.
1281 * - decoding: unused
1286 * ME pre pass diamond size & shape.
1287 * - encoding: set by user.
1288 * - decoding: unused
1293 * subpel ME quality.
1294 * - encoding: set by user.
1295 * - decoding: unused
1297 int me_subpel_quality;
1300 * callback to negotiate the pixelFormat.
1301 * @param fmt is the list of formats which are supported by the codec,
1302 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1303 * the first is allways the native one
1304 * @return the choosen format
1305 * - encoding: unused
1306 * - decoding: set by user, if not set then the native format will always be choosen
1308 enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
1311 * DTG active format information (additionnal aspect ratio
1312 * information only used in DVB MPEG2 transport streams). 0 if
1315 * - encoding: unused.
1316 * - decoding: set by decoder
1318 int dtg_active_format;
1319 #define FF_DTG_AFD_SAME 8
1320 #define FF_DTG_AFD_4_3 9
1321 #define FF_DTG_AFD_16_9 10
1322 #define FF_DTG_AFD_14_9 11
1323 #define FF_DTG_AFD_4_3_SP_14_9 13
1324 #define FF_DTG_AFD_16_9_SP_14_9 14
1325 #define FF_DTG_AFD_SP_4_3 15
1328 * Maximum motion estimation search range in subpel units.
1329 * if 0 then no limit
1331 * - encoding: set by user.
1332 * - decoding: unused.
1338 * for variable fps this is 1
1339 * - encoding: set by user.
1340 * - decoding: set by lavc.
1341 * @todo move this after frame_rate
1344 int frame_rate_base;
1346 * intra quantizer bias.
1347 * - encoding: set by user.
1348 * - decoding: unused
1350 int intra_quant_bias;
1351 #define FF_DEFAULT_QUANT_BIAS 999999
1354 * inter quantizer bias.
1355 * - encoding: set by user.
1356 * - decoding: unused
1358 int inter_quant_bias;
1362 * - encoding: unused.
1363 * - decoding: which clrtable should be used for 8bit RGB images
1364 * table have to be stored somewhere FIXME
1369 * internal_buffer count.
1370 * Dont touch, used by lavc default_get_buffer()
1372 int internal_buffer_count;
1376 * Dont touch, used by lavc default_get_buffer()
1378 void *internal_buffer;
1380 #define FF_LAMBDA_SHIFT 7
1381 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1382 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1383 #define FF_LAMBDA_MAX (256*128-1)
1385 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1387 * global quality for codecs which cannot change it per frame.
1388 * this should be proportional to MPEG1/2/4 qscale.
1389 * - encoding: set by user.
1390 * - decoding: unused
1394 #define FF_CODER_TYPE_VLC 0
1395 #define FF_CODER_TYPE_AC 1
1398 * - encoding: set by user.
1399 * - decoding: unused
1405 * - encoding: set by user.
1406 * - decoding: unused
1412 * - encoding: unused
1413 * - decoding: set by user.
1416 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1417 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1418 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1421 * XVideo Motion Acceleration
1422 * - encoding: forbidden
1423 * - decoding: set by decoder
1425 int xvmc_acceleration;
1428 * macroblock decision mode
1429 * - encoding: set by user.
1430 * - decoding: unused
1433 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1434 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1435 #define FF_MB_DECISION_RD 2 ///< rate distoration
1438 * custom intra quantization matrix
1439 * - encoding: set by user, can be NULL
1440 * - decoding: set by lavc
1442 uint16_t *intra_matrix;
1445 * custom inter quantization matrix
1446 * - encoding: set by user, can be NULL
1447 * - decoding: set by lavc
1449 uint16_t *inter_matrix;
1452 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1453 * this is used to workaround some encoder bugs
1454 * - encoding: unused
1455 * - decoding: set by user, will be converted to upper case by lavc during init
1457 unsigned int stream_codec_tag;
1460 * scene change detection threshold.
1461 * 0 is default, larger means fewer detected scene changes
1462 * - encoding: set by user.
1463 * - decoding: unused
1465 int scenechange_threshold;
1468 * minimum lagrange multipler
1469 * - encoding: set by user.
1470 * - decoding: unused
1475 * maximum lagrange multipler
1476 * - encoding: set by user.
1477 * - decoding: unused
1482 * Palette control structure
1483 * - encoding: ??? (no palette-enabled encoder yet)
1484 * - decoding: set by user.
1486 struct AVPaletteControl *palctrl;
1489 * noise reduction strength
1490 * - encoding: set by user.
1491 * - decoding: unused
1493 int noise_reduction;
1496 * called at the beginning of a frame to get cr buffer for it.
1497 * buffer type (size, hints) must be the same. lavc won't check it.
1498 * lavc will pass previous buffer in pic, function should return
1499 * same buffer or new buffer with old frame "painted" into it.
1500 * if pic.data[0] == NULL must behave like get_buffer().
1501 * - encoding: unused
1502 * - decoding: set by lavc, user can override
1504 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1507 * number of bits which should be loaded into the rc buffer before decoding starts
1508 * - encoding: set by user.
1509 * - decoding: unused
1511 int rc_initial_buffer_occupancy;
1515 * - encoding: set by user.
1516 * - decoding: unused
1518 int inter_threshold;
1522 * - encoding: set by user.
1523 * - decoding: set by user.
1528 * simulates errors in the bitstream to test error concealment.
1529 * - encoding: set by user.
1530 * - decoding: unused.
1535 * MP3 antialias algorithm, see FF_AA_* below.
1536 * - encoding: unused
1537 * - decoding: set by user
1540 #define FF_AA_AUTO 0
1541 #define FF_AA_FASTINT 1 //not implemented yet
1543 #define FF_AA_FLOAT 3
1545 * Quantizer noise shaping.
1546 * - encoding: set by user
1547 * - decoding: unused
1549 int quantizer_noise_shaping;
1553 * is used to decide how many independant tasks should be passed to execute()
1554 * - encoding: set by user
1555 * - decoding: set by user
1560 * the codec may call this to execute several independant things. it will return only after
1561 * finishing all tasks, the user may replace this with some multithreaded implementation, the
1562 * default implementation will execute the parts serially
1563 * @param count the number of things to execute
1564 * - encoding: set by lavc, user can override
1565 * - decoding: set by lavc, user can override
1567 int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
1571 * can be used by execute() to store some per AVCodecContext stuff.
1572 * - encoding: set by execute()
1573 * - decoding: set by execute()
1575 void *thread_opaque;
1578 * Motion estimation threshold. under which no motion estimation is
1579 * performed, but instead the user specified motion vectors are used
1581 * - encoding: set by user
1582 * - decoding: unused
1587 * Macroblock threshold. under which the user specified macroblock types will be used
1588 * - encoding: set by user
1589 * - decoding: unused
1595 * - encoding: set by user
1596 * - decoding: unused
1598 int intra_dc_precision;
1605 typedef struct AVOption {
1606 /** options' name */
1607 const char *name; /* if name is NULL, it indicates a link to next */
1608 /** short English text help or const struct AVOption* subpointer */
1609 const char *help; // const struct AVOption* sub;
1610 /** offset to context structure where the parsed value should be stored */
1612 /** options' type */
1614 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1615 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1616 #define FF_OPT_TYPE_INT 3 ///< integer
1617 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1618 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1619 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1620 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1621 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1622 /** min value (min == max -> no limits) */
1624 /** maximum value for double/int */
1626 /** default boo [0,1]l/double/int value */
1629 * default string value (with optional semicolon delimited extra option-list
1630 * i.e. option1;option2;option3
1631 * defval might select other then first argument as default
1634 #define FF_OPT_MAX_DEPTH 10
1638 * Parse option(s) and sets fields in passed structure
1639 * @param strct structure where the parsed results will be written
1640 * @param list list with AVOptions
1641 * @param opts string with options for parsing
1643 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1649 typedef struct AVCodec {
1651 enum CodecType type;
1654 int (*init)(AVCodecContext *);
1655 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1656 int (*close)(AVCodecContext *);
1657 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1658 uint8_t *buf, int buf_size);
1660 const AVOption *options;
1661 struct AVCodec *next;
1662 void (*flush)(AVCodecContext *);
1663 const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
1664 const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
1668 * four components are given, that's all.
1669 * the last component is alpha
1671 typedef struct AVPicture {
1673 int linesize[4]; ///< number of bytes per line
1678 * This structure defines a method for communicating palette changes
1679 * between and demuxer and a decoder.
1681 #define AVPALETTE_SIZE 1024
1682 #define AVPALETTE_COUNT 256
1683 typedef struct AVPaletteControl {
1685 /* demuxer sets this to 1 to indicate the palette has changed;
1686 * decoder resets to 0 */
1687 int palette_changed;
1689 /* 4-byte ARGB palette entries, stored in native byte order; note that
1690 * the individual palette components should be on a 8-bit scale; if
1691 * the palette data comes from a IBM VGA native format, the component
1692 * data is probably 6 bits in size and needs to be scaled */
1693 unsigned int palette[AVPALETTE_COUNT];
1697 extern AVCodec ac3_encoder;
1698 extern AVCodec mp2_encoder;
1699 extern AVCodec mp3lame_encoder;
1700 extern AVCodec oggvorbis_encoder;
1701 extern AVCodec faac_encoder;
1702 extern AVCodec mpeg1video_encoder;
1703 extern AVCodec mpeg2video_encoder;
1704 extern AVCodec h263_encoder;
1705 extern AVCodec h263p_encoder;
1706 extern AVCodec flv_encoder;
1707 extern AVCodec rv10_encoder;
1708 extern AVCodec rv20_encoder;
1709 extern AVCodec dvvideo_encoder;
1710 extern AVCodec mjpeg_encoder;
1711 extern AVCodec ljpeg_encoder;
1712 extern AVCodec mpeg4_encoder;
1713 extern AVCodec msmpeg4v1_encoder;
1714 extern AVCodec msmpeg4v2_encoder;
1715 extern AVCodec msmpeg4v3_encoder;
1716 extern AVCodec wmv1_encoder;
1717 extern AVCodec wmv2_encoder;
1718 extern AVCodec huffyuv_encoder;
1719 extern AVCodec h264_encoder;
1720 extern AVCodec asv1_encoder;
1721 extern AVCodec asv2_encoder;
1722 extern AVCodec vcr1_encoder;
1723 extern AVCodec ffv1_encoder;
1724 extern AVCodec mdec_encoder;
1725 extern AVCodec zlib_encoder;
1726 extern AVCodec svq1_encoder;
1728 extern AVCodec h263_decoder;
1729 extern AVCodec h261_decoder;
1730 extern AVCodec mpeg4_decoder;
1731 extern AVCodec msmpeg4v1_decoder;
1732 extern AVCodec msmpeg4v2_decoder;
1733 extern AVCodec msmpeg4v3_decoder;
1734 extern AVCodec wmv1_decoder;
1735 extern AVCodec wmv2_decoder;
1736 extern AVCodec mpeg1video_decoder;
1737 extern AVCodec mpeg2video_decoder;
1738 extern AVCodec mpegvideo_decoder;
1739 extern AVCodec mpeg_xvmc_decoder;
1740 extern AVCodec h263i_decoder;
1741 extern AVCodec flv_decoder;
1742 extern AVCodec rv10_decoder;
1743 extern AVCodec rv20_decoder;
1744 extern AVCodec svq1_decoder;
1745 extern AVCodec svq3_decoder;
1746 extern AVCodec dvvideo_decoder;
1747 extern AVCodec wmav1_decoder;
1748 extern AVCodec wmav2_decoder;
1749 extern AVCodec mjpeg_decoder;
1750 extern AVCodec mjpegb_decoder;
1751 extern AVCodec sp5x_decoder;
1752 extern AVCodec mp2_decoder;
1753 extern AVCodec mp3_decoder;
1754 extern AVCodec mace3_decoder;
1755 extern AVCodec mace6_decoder;
1756 extern AVCodec huffyuv_decoder;
1757 extern AVCodec oggvorbis_decoder;
1758 extern AVCodec cyuv_decoder;
1759 extern AVCodec h264_decoder;
1760 extern AVCodec indeo3_decoder;
1761 extern AVCodec vp3_decoder;
1762 extern AVCodec theora_decoder;
1763 extern AVCodec amr_nb_decoder;
1764 extern AVCodec amr_nb_encoder;
1765 extern AVCodec amr_wb_encoder;
1766 extern AVCodec amr_wb_decoder;
1767 extern AVCodec aac_decoder;
1768 extern AVCodec mpeg4aac_decoder;
1769 extern AVCodec asv1_decoder;
1770 extern AVCodec asv2_decoder;
1771 extern AVCodec vcr1_decoder;
1772 extern AVCodec cljr_decoder;
1773 extern AVCodec ffv1_decoder;
1774 extern AVCodec fourxm_decoder;
1775 extern AVCodec mdec_decoder;
1776 extern AVCodec roq_decoder;
1777 extern AVCodec interplay_video_decoder;
1778 extern AVCodec xan_wc3_decoder;
1779 extern AVCodec rpza_decoder;
1780 extern AVCodec cinepak_decoder;
1781 extern AVCodec msrle_decoder;
1782 extern AVCodec msvideo1_decoder;
1783 extern AVCodec vqa_decoder;
1784 extern AVCodec idcin_decoder;
1785 extern AVCodec eightbps_decoder;
1786 extern AVCodec smc_decoder;
1787 extern AVCodec flic_decoder;
1788 extern AVCodec vmdvideo_decoder;
1789 extern AVCodec vmdaudio_decoder;
1790 extern AVCodec truemotion1_decoder;
1791 extern AVCodec mszh_decoder;
1792 extern AVCodec zlib_decoder;
1793 extern AVCodec ra_144_decoder;
1794 extern AVCodec ra_288_decoder;
1795 extern AVCodec roq_dpcm_decoder;
1796 extern AVCodec interplay_dpcm_decoder;
1797 extern AVCodec xan_dpcm_decoder;
1798 extern AVCodec qtrle_decoder;
1799 extern AVCodec flac_decoder;
1802 #define PCM_CODEC(id, name) \
1803 extern AVCodec name ## _decoder; \
1804 extern AVCodec name ## _encoder
1806 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1807 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1808 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1809 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1810 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1811 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1812 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1813 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1817 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1818 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1819 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1820 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1821 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1822 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1823 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1824 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1825 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1826 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1827 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1828 PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
1832 /* dummy raw video codec */
1833 extern AVCodec rawvideo_encoder;
1834 extern AVCodec rawvideo_decoder;
1836 /* the following codecs use external GPL libs */
1837 extern AVCodec ac3_decoder;
1841 struct ReSampleContext;
1843 typedef struct ReSampleContext ReSampleContext;
1845 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1846 int output_rate, int input_rate);
1847 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1848 void audio_resample_close(ReSampleContext *s);
1850 /* YUV420 format is assumed ! */
1852 struct ImgReSampleContext;
1854 typedef struct ImgReSampleContext ImgReSampleContext;
1856 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1857 int input_width, int input_height);
1859 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1860 int iwidth, int iheight,
1861 int topBand, int bottomBand,
1862 int leftBand, int rightBand,
1863 int padtop, int padbottom,
1864 int padleft, int padright);
1867 void img_resample(ImgReSampleContext *s,
1868 AVPicture *output, const AVPicture *input);
1870 void img_resample_close(ImgReSampleContext *s);
1873 * Allocate memory for a picture. Call avpicture_free to free it.
1875 * @param picture the picture to be filled in.
1876 * @param pix_fmt the format of the picture.
1877 * @param width the width of the picture.
1878 * @param height the height of the picture.
1879 * @return 0 if successful, -1 if not.
1881 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1883 /* Free a picture previously allocated by avpicture_alloc. */
1884 void avpicture_free(AVPicture *picture);
1886 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1887 int pix_fmt, int width, int height);
1888 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1889 unsigned char *dest, int dest_size);
1890 int avpicture_get_size(int pix_fmt, int width, int height);
1891 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1892 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1893 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1895 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1896 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1897 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1898 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1899 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1900 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1902 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1904 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1905 int has_alpha, int *loss_ptr);
1907 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1908 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1909 int img_get_alpha_info(const AVPicture *src,
1910 int pix_fmt, int width, int height);
1912 /* convert among pixel formats */
1913 int img_convert(AVPicture *dst, int dst_pix_fmt,
1914 const AVPicture *src, int pix_fmt,
1915 int width, int height);
1917 /* deinterlace a picture */
1918 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1919 int pix_fmt, int width, int height);
1921 /* external high level API */
1923 extern AVCodec *first_avcodec;
1925 /* returns LIBAVCODEC_VERSION_INT constant */
1926 unsigned avcodec_version(void);
1927 /* returns LIBAVCODEC_BUILD constant */
1928 unsigned avcodec_build(void);
1929 void avcodec_init(void);
1931 void register_avcodec(AVCodec *format);
1932 AVCodec *avcodec_find_encoder(enum CodecID id);
1933 AVCodec *avcodec_find_encoder_by_name(const char *name);
1934 AVCodec *avcodec_find_decoder(enum CodecID id);
1935 AVCodec *avcodec_find_decoder_by_name(const char *name);
1936 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1938 void avcodec_get_context_defaults(AVCodecContext *s);
1939 AVCodecContext *avcodec_alloc_context(void);
1940 void avcodec_get_frame_defaults(AVFrame *pic);
1941 AVFrame *avcodec_alloc_frame(void);
1943 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1944 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1945 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
1946 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
1947 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
1949 int avcodec_thread_init(AVCodecContext *s, int thread_count);
1950 void avcodec_thread_free(AVCodecContext *s);
1951 int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1952 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
1953 //FIXME func typedef
1956 * opens / inits the AVCodecContext.
1959 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1961 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1962 int *frame_size_ptr,
1963 uint8_t *buf, int buf_size);
1964 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1965 int *got_picture_ptr,
1966 uint8_t *buf, int buf_size);
1967 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1969 uint8_t *buf, int buf_size);
1970 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1971 const short *samples);
1972 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1973 const AVFrame *pict);
1975 int avcodec_close(AVCodecContext *avctx);
1977 void avcodec_register_all(void);
1979 void avcodec_flush_buffers(AVCodecContext *avctx);
1981 /* misc usefull functions */
1984 * returns a single letter to describe the picture type
1986 char av_get_pict_type_char(int pict_type);
1989 * reduce a fraction.
1990 * this is usefull for framerate calculations
1991 * @param max the maximum allowed for dst_nom & dst_den
1992 * @return 1 if exact, 0 otherwise
1994 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1997 * rescale a 64bit integer.
1998 * a simple a*b/c isnt possible as it can overflow
2000 int64_t av_rescale(int64_t a, int64_t b, int64_t c);
2004 * Interface for 0.5.0 version
2006 * do not even think about it's usage for this moment
2010 /// compressed size used from given memory buffer
2012 /// I/P/B frame type
2018 * order can't be changed - once it was defined
2022 AVC_OPEN_BY_NAME = 0xACA000,
2023 AVC_OPEN_BY_CODEC_ID,
2028 // pin - struct { uint8_t* src, uint_t src_size }
2029 // pout - struct { AVPicture* img, consumed_bytes,
2031 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
2032 // pout - uint_t used_from_dest_size
2035 // query/get video commands
2036 AVC_GET_VERSION = 0xACB000,
2040 AVC_GET_QUANT_TABLE,
2043 // query/get audio commands
2044 AVC_GET_FRAME_SIZE = 0xABC000,
2046 // maybe define some simple structure which
2047 // might be passed to the user - but they can't
2048 // contain any codec specific parts and these
2049 // calls are usualy necessary only few times
2051 // set video commands
2052 AVC_SET_WIDTH = 0xACD000,
2055 // set video encoding commands
2056 AVC_SET_FRAME_RATE = 0xACD800,
2060 // set audio commands
2061 AVC_SET_SAMPLE_RATE = 0xACE000,
2067 * \param handle allocated private structure by libavcodec
2068 * for initialization pass NULL - will be returned pout
2069 * user is supposed to know nothing about its structure
2070 * \param cmd type of operation to be performed
2071 * \param pint input parameter
2072 * \param pout output parameter
2074 * \returns command status - eventually for query command it might return
2075 * integer resulting value
2077 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
2080 typedef struct AVCodecParserContext {
2082 struct AVCodecParser *parser;
2083 int64_t frame_offset; /* offset of the current frame */
2084 int64_t cur_offset; /* current offset
2085 (incremented by each av_parser_parse()) */
2086 int64_t last_frame_offset; /* offset of the last frame */
2088 int pict_type; /* XXX: put it back in AVCodecContext */
2089 int repeat_pict; /* XXX: put it back in AVCodecContext */
2090 int64_t pts; /* pts of the current frame */
2091 int64_t dts; /* dts of the current frame */
2096 int fetch_timestamp;
2098 #define AV_PARSER_PTS_NB 4
2099 int cur_frame_start_index;
2100 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
2101 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
2102 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
2103 } AVCodecParserContext;
2105 typedef struct AVCodecParser {
2106 int codec_ids[3]; /* several codec IDs are permitted */
2108 int (*parser_init)(AVCodecParserContext *s);
2109 int (*parser_parse)(AVCodecParserContext *s,
2110 AVCodecContext *avctx,
2111 uint8_t **poutbuf, int *poutbuf_size,
2112 const uint8_t *buf, int buf_size);
2113 void (*parser_close)(AVCodecParserContext *s);
2114 struct AVCodecParser *next;
2117 extern AVCodecParser *av_first_parser;
2119 void av_register_codec_parser(AVCodecParser *parser);
2120 AVCodecParserContext *av_parser_init(int codec_id);
2121 int av_parser_parse(AVCodecParserContext *s,
2122 AVCodecContext *avctx,
2123 uint8_t **poutbuf, int *poutbuf_size,
2124 const uint8_t *buf, int buf_size,
2125 int64_t pts, int64_t dts);
2126 void av_parser_close(AVCodecParserContext *s);
2128 extern AVCodecParser mpegvideo_parser;
2129 extern AVCodecParser mpeg4video_parser;
2130 extern AVCodecParser h261_parser;
2131 extern AVCodecParser h263_parser;
2132 extern AVCodecParser h264_parser;
2133 extern AVCodecParser mpegaudio_parser;
2134 extern AVCodecParser ac3_parser;
2137 void *av_malloc(unsigned int size);
2138 void *av_mallocz(unsigned int size);
2139 void *av_realloc(void *ptr, unsigned int size);
2140 void av_free(void *ptr);
2141 char *av_strdup(const char *s);
2142 void av_freep(void *ptr);
2143 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2144 /* for static data only */
2145 /* call av_free_static to release all staticaly allocated tables */
2146 void av_free_static(void);
2147 void *av_mallocz_static(unsigned int size);
2149 /* add by bero : in adx.c */
2150 int is_adx(const unsigned char *buf,size_t bufsize);
2152 void img_copy(AVPicture *dst, const AVPicture *src,
2153 int pix_fmt, int width, int height);
2159 #define AV_LOG_QUIET -1
2160 #define AV_LOG_ERROR 0
2161 #define AV_LOG_INFO 1
2162 #define AV_LOG_DEBUG 2
2165 extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2167 extern void av_log(void*, int level, const char *fmt, ...);
2170 extern void av_vlog(void*, int level, const char *fmt, va_list);
2171 extern int av_log_get_level(void);
2172 extern void av_log_set_level(int);
2173 extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
2176 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
2177 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
2178 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
2179 (((uint8_t*)(x))[1] << 16) | \
2180 (((uint8_t*)(x))[2] << 8) | \
2182 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
2183 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
2184 (((uint8_t*)(x))[2] << 16) | \
2185 (((uint8_t*)(x))[1] << 8) | \
2193 #endif /* AVCODEC_H */