16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000408
19 #define FFMPEG_VERSION "0.4.8"
20 #define LIBAVCODEC_BUILD 4701
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)
32 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
33 CODEC_ID_MPEG2VIDEO_XVMC,
38 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
79 CODEC_ID_INTERPLAY_VIDEO,
97 /* various pcm "codecs" */
107 /* various adpcm codecs */
108 CODEC_ID_ADPCM_IMA_QT,
109 CODEC_ID_ADPCM_IMA_WAV,
110 CODEC_ID_ADPCM_IMA_DK3,
111 CODEC_ID_ADPCM_IMA_DK4,
112 CODEC_ID_ADPCM_IMA_WS,
113 CODEC_ID_ADPCM_IMA_SMJPEG,
124 /* RealAudio codecs*/
128 /* various DPCM codecs */
130 CODEC_ID_INTERPLAY_DPCM,
133 CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
134 stream (only used by libavformat) */
137 /* CODEC_ID_MP3LAME is absolete */
138 #define CODEC_ID_MP3LAME CODEC_ID_MP3
141 CODEC_TYPE_UNKNOWN = -1,
148 * Pixel format. Notes:
150 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
151 * color is put together as:
152 * (A << 24) | (R << 16) | (G << 8) | B
153 * This is stored as BGRA on little endian CPU architectures and ARGB on
156 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
157 * image data is stored in AVFrame.data[0]. The palette is transported in
158 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
159 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
160 * also endian-specific). Note also that the individual RGB palette
161 * components stored in AVFrame.data[1] should be in the range 0..255.
162 * This is important as many custom PAL8 video codecs that were designed
163 * to run on the IBM VGA graphics adapter use 6-bit palette components.
166 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
168 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
169 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
170 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
171 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
172 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
173 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
174 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
175 PIX_FMT_RGB565, ///< always stored in cpu endianness
176 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
178 PIX_FMT_MONOWHITE, ///< 0 is white
179 PIX_FMT_MONOBLACK, ///< 0 is black
180 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
181 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
182 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
183 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
184 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
185 PIX_FMT_XVMC_MPEG2_IDCT,
189 /* currently unused, may be used if 24/32 bits samples ever supported */
191 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
195 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
198 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
199 * this is mainly needed because some optimized bitstream readers read
200 * 32 or 64 bit at once and could read over the end<br>
201 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
202 * MPEG bitstreams could cause overread and segfault
204 #define FF_INPUT_BUFFER_PADDING_SIZE 8
206 /* motion estimation type, EPZS by default */
216 typedef struct RcOverride{
219 int qscale; // if this is 0 then quality_factor will be used instead
220 float quality_factor;
223 /* only for ME compatiblity with old apps */
224 extern int motion_estimation_method;
226 #define FF_MAX_B_FRAMES 8
229 these flags can be passed in AVCodecContext.flags before initing
230 Note: note not everything is supported yet
233 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
234 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
235 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
236 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
237 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
238 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
239 /* parent program gurantees that the input for b-frame containing streams is not written to
240 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
241 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
242 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
243 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
244 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
245 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
246 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
247 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
248 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
249 of only at frame boundaries */
250 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
251 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
252 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
253 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
254 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
255 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
256 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
257 /* Fx : Flag for h263+ extra options */
258 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
259 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
260 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
261 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
262 #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
263 #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
264 #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
265 #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
266 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
267 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
268 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
269 #define CODEC_FLAG_CLOSED_GOP 0x80000000
270 /* Unsupported options :
271 * Syntax Arithmetic coding (SAC)
272 * Reference Picture Selection
273 * Independant Segment Decoding */
275 /* codec capabilities */
277 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
279 * Codec uses get_buffer() for allocating buffers.
280 * direct rendering method 1
282 #define CODEC_CAP_DR1 0x0002
283 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
285 #define CODEC_CAP_PARSE_ONLY 0x0004
286 #define CODEC_CAP_TRUNCATED 0x0008
288 //the following defines might change, so dont expect compatibility if u use them
289 #define MB_TYPE_INTRA4x4 0x0001
290 #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
291 #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
292 #define MB_TYPE_16x16 0x0008
293 #define MB_TYPE_16x8 0x0010
294 #define MB_TYPE_8x16 0x0020
295 #define MB_TYPE_8x8 0x0040
296 #define MB_TYPE_INTERLACED 0x0080
297 #define MB_TYPE_DIRECT2 0x0100 //FIXME
298 #define MB_TYPE_ACPRED 0x0200
299 #define MB_TYPE_GMC 0x0400
300 #define MB_TYPE_SKIP 0x0800
301 #define MB_TYPE_P0L0 0x1000
302 #define MB_TYPE_P1L0 0x2000
303 #define MB_TYPE_P0L1 0x4000
304 #define MB_TYPE_P1L1 0x8000
305 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
306 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
307 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
308 #define MB_TYPE_QUANT 0x00010000
309 #define MB_TYPE_CBP 0x00020000
310 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
314 * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
316 typedef struct AVPanScan{
319 * - encoding: set by user.
320 * - decoding: set by lavc
325 * width and height in 1/16 pel
326 * - encoding: set by user.
327 * - decoding: set by lavc
333 * position of the top left corner in 1/16 pel for up to 3 fields/frames.
334 * - encoding: set by user.
335 * - decoding: set by lavc
337 int16_t position[3][2];
340 #define FF_COMMON_FRAME \
342 * pointer to the picture planes.\
343 * this might be different from the first allocated byte\
350 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
351 * this isnt used by lavc unless the default get/release_buffer() is used\
357 * 1 -> keyframe, 0-> not\
358 * - encoding: set by lavc\
359 * - decoding: set by lavc\
364 * picture type of the frame, see ?_TYPE below.\
365 * - encoding: set by lavc for coded_picture (and set by user for input)\
366 * - decoding: set by lavc\
371 * presentation timestamp in micro seconds (time when frame should be shown to user)\
372 * if 0 then the frame_rate will be used as reference\
373 * - encoding: MUST be set by user\
374 * - decoding: set by lavc\
379 * picture number in bitstream order.\
380 * - encoding: set by\
381 * - decoding: set by lavc\
383 int coded_picture_number;\
385 * picture number in display order.\
386 * - encoding: set by\
387 * - decoding: set by lavc\
389 int display_picture_number;\
392 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
393 * - encoding: set by lavc for coded_picture (and set by user for input)\
394 * - decoding: set by lavc\
399 * buffer age (1->was last buffer and dint change, 2->..., ...).\
400 * set to INT_MAX if the buffer has not been used yet \
401 * - encoding: unused\
402 * - decoding: MUST be set by get_buffer()\
407 * is this picture used as reference\
408 * - encoding: unused\
409 * - decoding: set by lavc (before get_buffer() call))\
415 * - encoding: unused\
416 * - decoding: set by lavc\
418 int8_t *qscale_table;\
421 * - encoding: unused\
422 * - decoding: set by lavc\
427 * mbskip_table[mb]>=1 if MB didnt change\
428 * stride= mb_width = (width+15)>>4\
429 * - encoding: unused\
430 * - decoding: set by lavc\
432 uint8_t *mbskip_table;\
435 * Motion vector table\
436 * - encoding: unused\
437 * - decoding: set by lavc\
439 int16_t (*motion_val[2])[2];\
442 * Macroblock type table\
443 * mb_type_base + mb_width + 2\
444 * - encoding: unused\
445 * - decoding: set by lavc\
450 * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 2x2)\
451 * - encoding: unused\
452 * - decoding: set by lavc\
454 uint8_t motion_subsample_log2;\
457 * for some private data of the user\
458 * - encoding: unused\
459 * - decoding: set by user\
465 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
466 * - decoding: unused\
471 * type of the buffer (to keep track of who has to dealloc data[*])\
472 * - encoding: set by the one who allocs it\
473 * - decoding: set by the one who allocs it\
474 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
479 * when decoding, this signal how much the picture must be delayed.\
480 * extra_delay = repeat_pict / (2*fps)\
481 * - encoding: unused\
482 * - decoding: set by lavc\
492 * The content of the picture is interlaced.\
493 * - encoding: set by user\
494 * - decoding: set by lavc (default 0)\
496 int interlaced_frame;\
499 * if the content is interlaced, is top field displayed first.\
500 * - encoding: set by user\
501 * - decoding: set by lavc\
503 int top_field_first;\
507 * - encoding: set by user\
508 * - decoding: set by lavc\
510 AVPanScan *pan_scan;\
513 * tell user application that palette has changed from previous frame.\
514 * - encoding: ??? (no palette-enabled encoder yet)\
515 * - decoding: set by lavc (default 0)\
517 int palette_has_changed;\
520 * Codec suggestion on buffer type if != 0\
521 * - encoding: unused\
522 * - decoding: set by lavc (before get_buffer() call))\
526 #define FF_QSCALE_TYPE_MPEG1 0
527 #define FF_QSCALE_TYPE_MPEG2 1
529 #define FF_BUFFER_TYPE_INTERNAL 1
530 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
531 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
532 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
535 #define FF_I_TYPE 1 // Intra
536 #define FF_P_TYPE 2 // Predicted
537 #define FF_B_TYPE 3 // Bi-dir predicted
538 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
542 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
543 #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
544 #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
545 #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
550 typedef struct AVFrame {
554 #define DEFAULT_FRAME_RATE_BASE 1001000
557 * main external api structure.
559 typedef struct AVCodecContext {
561 * the average bitrate.
562 * - encoding: set by user. unused for constant quantizer encoding
563 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
568 * number of bits the bitstream is allowed to diverge from the reference.
569 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
570 * - encoding: set by user. unused for constant quantizer encoding
573 int bit_rate_tolerance;
577 * - encoding: set by user.
578 * - decoding: set by user.
583 * some codecs needs additionnal format info. It is stored here
584 * - encoding: set by user.
585 * - decoding: set by lavc. (FIXME is this ok?)
590 * motion estimation algorithm used for video coding.
591 * - encoding: MUST be set by user.
597 * some codecs need / can use extra-data like huffman tables.
598 * mjpeg: huffman tables
599 * rv10: additional flags
600 * mpeg4: global headers (they can be in the bitstream or here)
601 * - encoding: set/allocated/freed by lavc.
602 * - decoding: set/allocated/freed by user.
609 * frames per sec multiplied by frame_rate_base.
610 * for variable fps this is the precission, so if the timestamps
611 * can be specified in msec precssion then this is 1000*frame_rate_base
612 * - encoding: MUST be set by user
613 * - decoding: set by lavc. 0 or the frame_rate if available
619 * - encoding: MUST be set by user.
620 * - decoding: set by user if known, codec should override / dynamically change if needed
624 #define FF_ASPECT_SQUARE 1
625 #define FF_ASPECT_4_3_625 2
626 #define FF_ASPECT_4_3_525 3
627 #define FF_ASPECT_16_9_625 4
628 #define FF_ASPECT_16_9_525 5
629 #define FF_ASPECT_EXTENDED 15
632 * the number of pictures in a group of pitures, or 0 for intra_only.
633 * - encoding: set by user.
639 * pixel format, see PIX_FMT_xxx.
640 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
641 * conversion is in order. This only works for
642 * codecs with one supported pix_fmt, we should
643 * do something for a generic case as well.
644 * - decoding: set by lavc.
646 enum PixelFormat pix_fmt;
649 * Frame rate emulation. If not zero lower layer (i.e. format handler)
650 * has to read frames at native frame rate.
651 * - encoding: set by user.
652 * - decoding: unused.
657 * if non NULL, 'draw_horiz_band' is called by the libavcodec
658 * decoder to draw an horizontal band. It improve cache usage. Not
659 * all codecs can do that. You must check the codec capabilities
662 * - decoding: set by user.
663 * @param height the height of the slice
664 * @param y the y position of the slice
665 * @param type 1->top field, 2->bottom field, 3->frame
666 * @param offset offset into the AVFrame.data from which the slice should be read
668 void (*draw_horiz_band)(struct AVCodecContext *s,
669 const AVFrame *src, int offset[4],
670 int y, int type, int height);
673 int sample_rate; ///< samples per sec
675 int sample_fmt; ///< sample format, currenly unused
677 /* the following data should not be initialized */
678 int frame_size; ///< in samples, initialized when calling 'init'
679 int frame_number; ///< audio or video frame number
680 int real_pict_num; ///< returns the real picture number of previous encoded frame
683 * number of frames the decoded output will be delayed relative to
685 * - encoding: set by lavc.
690 /* - encoding parameters */
691 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
692 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
696 * - encoding: set by user.
703 * - encoding: set by user.
709 * maximum quantizer difference etween frames.
710 * - encoding: set by user.
716 * maximum number of b frames between non b frames.
717 * note: the output will be delayed by max_b_frames+1 relative to the input
718 * - encoding: set by user.
724 * qscale factor between ip and b frames.
725 * - encoding: set by user.
728 float b_quant_factor;
730 /** obsolete FIXME remove */
732 int b_frame_strategy;
737 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
741 struct AVCodec *codec;
745 /* unused, FIXME remove*/
748 int rtp_payload_size; /* The size of the RTP payload, the coder will */
749 /* do it's best to deliver a chunk with size */
750 /* below rtp_payload_size, the chunk will start */
751 /* with a start code on some codecs like H.263 */
752 /* This doesn't take account of any particular */
753 /* headers inside the transmited RTP payload */
756 /* The RTP callcack: This function is called */
757 /* every time the encoder as a packet to send */
758 /* Depends on the encoder if the data starts */
759 /* with a Start Code (it should) H.263 does */
760 void (*rtp_callback)(void *data, int size, int packet_number);
762 /* statistics, used for 2-pass encoding */
773 * number of bits used for the previously encoded frame.
774 * - encoding: set by lavc
780 * private data of the user, can be used to carry app specific stuff.
781 * - encoding: set by user
782 * - decoding: set by user
787 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
788 enum CodecID codec_id; /* see CODEC_ID_xxx */
791 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
792 * this is used to workaround some encoder bugs
793 * - encoding: set by user, if not then the default based on codec_id will be used
794 * - decoding: set by user, will be converted to upper case by lavc during init
796 unsigned int codec_tag;
799 * workaround bugs in encoders which sometimes cannot be detected automatically.
801 * - decoding: set by user
804 #define FF_BUG_AUTODETECT 1 ///< autodetection
805 #define FF_BUG_OLD_MSMPEG4 2
806 #define FF_BUG_XVID_ILACE 4
807 #define FF_BUG_UMP4 8
808 #define FF_BUG_NO_PADDING 16
809 #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
810 #define FF_BUG_QPEL_CHROMA 64
811 #define FF_BUG_STD_QPEL 128
812 #define FF_BUG_QPEL_CHROMA2 256
813 #define FF_BUG_DIRECT_BLOCKSIZE 512
814 #define FF_BUG_EDGE 1024
815 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
818 * luma single coeff elimination threshold.
819 * - encoding: set by user
822 int luma_elim_threshold;
825 * chroma single coeff elimination threshold.
826 * - encoding: set by user
829 int chroma_elim_threshold;
832 * strictly follow the std (MPEG4, ...).
833 * - encoding: set by user
836 int strict_std_compliance;
839 * qscale offset between ip and b frames.
840 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
841 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
842 * - encoding: set by user.
845 float b_quant_offset;
848 * error resilience higher values will detect more errors but may missdetect
849 * some more or less valid parts as errors.
851 * - decoding: set by user
853 int error_resilience;
854 #define FF_ER_CAREFULL 1
855 #define FF_ER_COMPLIANT 2
856 #define FF_ER_AGGRESSIVE 3
857 #define FF_ER_VERY_AGGRESSIVE 4
860 * called at the beginning of each frame to get a buffer for it.
861 * if pic.reference is set then the frame will be read later by lavc
862 * width and height should be rounded up to the next multiple of 16
864 * - decoding: set by lavc, user can override
866 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
869 * called to release buffers which where allocated with get_buffer.
870 * a released buffer can be reused in get_buffer()
871 * pic.data[*] must be set to NULL
873 * - decoding: set by lavc, user can override
875 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
878 * is 1 if the decoded stream contains b frames, 0 otherwise.
880 * - decoding: set by lavc
884 int block_align; ///< used by some WAV based audio codecs
886 int parse_only; /* - decoding only: if true, only parsing is done
887 (function avcodec_parse_frame()). The frame
888 data is returned. Only MPEG codecs support this now. */
891 * 0-> h263 quant 1-> mpeg quant.
892 * - encoding: set by user.
898 * pass1 encoding statistics output buffer.
899 * - encoding: set by lavc
905 * pass2 encoding statistics input buffer.
906 * concatenated stuff from stats_out of pass1 should be placed here
907 * - encoding: allocated/set/freed by user
913 * ratecontrol qmin qmax limiting method.
914 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
915 * - encoding: set by user.
924 * ratecontrol override, see RcOverride.
925 * - encoding: allocated/set/freed by user.
928 RcOverride *rc_override;
929 int rc_override_count;
932 * rate control equation.
933 * - encoding: set by user
940 * - encoding: set by user.
947 * - encoding: set by user.
953 * decoder bitstream buffer size.
954 * - encoding: set by user.
958 float rc_buffer_aggressivity;
961 * qscale factor between p and i frames.
962 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
963 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
964 * - encoding: set by user.
967 float i_quant_factor;
970 * qscale offset between p and i frames.
971 * - encoding: set by user.
974 float i_quant_offset;
977 * initial complexity for pass1 ratecontrol.
978 * - encoding: set by user.
981 float rc_initial_cplx;
984 * dct algorithm, see FF_DCT_* below.
985 * - encoding: set by user
989 #define FF_DCT_AUTO 0
990 #define FF_DCT_FASTINT 1
993 #define FF_DCT_MLIB 4
994 #define FF_DCT_ALTIVEC 5
995 #define FF_DCT_FAAN 6
998 * luminance masking (0-> disabled).
999 * - encoding: set by user
1000 * - decoding: unused
1005 * temporary complexity masking (0-> disabled).
1006 * - encoding: set by user
1007 * - decoding: unused
1009 float temporal_cplx_masking;
1012 * spatial complexity masking (0-> disabled).
1013 * - encoding: set by user
1014 * - decoding: unused
1016 float spatial_cplx_masking;
1019 * p block masking (0-> disabled).
1020 * - encoding: set by user
1021 * - decoding: unused
1026 * darkness masking (0-> disabled).
1027 * - encoding: set by user
1028 * - decoding: unused
1033 /* for binary compatibility */
1037 * idct algorithm, see FF_IDCT_* below.
1038 * - encoding: set by user
1039 * - decoding: set by user
1042 #define FF_IDCT_AUTO 0
1043 #define FF_IDCT_INT 1
1044 #define FF_IDCT_SIMPLE 2
1045 #define FF_IDCT_SIMPLEMMX 3
1046 #define FF_IDCT_LIBMPEG2MMX 4
1047 #define FF_IDCT_PS2 5
1048 #define FF_IDCT_MLIB 6
1049 #define FF_IDCT_ARM 7
1050 #define FF_IDCT_ALTIVEC 8
1051 #define FF_IDCT_SH4 9
1052 #define FF_IDCT_SIMPLEARM 10
1056 * - encoding: set by lavc
1057 * - decoding: set by user (or 0)
1061 * slice offsets in the frame in bytes.
1062 * - encoding: set/allocated by lavc
1063 * - decoding: set/allocated by user (or NULL)
1068 * error concealment flags.
1069 * - encoding: unused
1070 * - decoding: set by user
1072 int error_concealment;
1073 #define FF_EC_GUESS_MVS 1
1074 #define FF_EC_DEBLOCK 2
1077 * dsp_mask could be add used to disable unwanted CPU features
1078 * CPU features (i.e. MMX, SSE. ...)
1080 * with FORCE flag you may instead enable given CPU features
1081 * (Dangerous: usable in case of misdetection, improper usage however will
1082 * result into program crash)
1085 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
1086 /* lower 16 bits - CPU features */
1088 #define FF_MM_MMX 0x0001 /* standard MMX */
1089 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
1090 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
1091 #define FF_MM_SSE 0x0008 /* SSE functions */
1092 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
1093 #endif /* HAVE_MMX */
1096 * bits per sample/pixel from the demuxer (needed for huffyuv).
1097 * - encoding: set by lavc
1098 * - decoding: set by user
1100 int bits_per_sample;
1103 * prediction method (needed for huffyuv).
1104 * - encoding: set by user
1105 * - decoding: unused
1107 int prediction_method;
1108 #define FF_PRED_LEFT 0
1109 #define FF_PRED_PLANE 1
1110 #define FF_PRED_MEDIAN 2
1113 * sample aspect ratio (0 if unknown).
1114 * numerator and denominator must be relative prime and smaller then 256 for some video standards
1115 * - encoding: set by user.
1116 * - decoding: set by lavc.
1118 AVRational sample_aspect_ratio;
1121 * the picture in the bitstream.
1122 * - encoding: set by lavc
1123 * - decoding: set by lavc
1125 AVFrame *coded_frame;
1129 * - encoding: set by user.
1130 * - decoding: set by user.
1133 #define FF_DEBUG_PICT_INFO 1
1134 #define FF_DEBUG_RC 2
1135 #define FF_DEBUG_BITSTREAM 4
1136 #define FF_DEBUG_MB_TYPE 8
1137 #define FF_DEBUG_QP 16
1138 #define FF_DEBUG_MV 32
1139 //#define FF_DEBUG_VIS_MV 0x00000040
1140 #define FF_DEBUG_SKIP 0x00000080
1141 #define FF_DEBUG_STARTCODE 0x00000100
1142 #define FF_DEBUG_PTS 0x00000200
1143 #define FF_DEBUG_ER 0x00000400
1144 #define FF_DEBUG_MMCO 0x00000800
1145 #define FF_DEBUG_BUGS 0x00001000
1146 #define FF_DEBUG_VIS_QP 0x00002000
1147 #define FF_DEBUG_VIS_MB_TYPE 0x00004000
1151 * - encoding: set by user.
1152 * - decoding: set by user.
1155 #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
1156 #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
1157 #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
1161 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1162 * - decoding: unused
1167 * minimum MB quantizer.
1168 * - encoding: set by user.
1169 * - decoding: unused
1174 * maximum MB quantizer.
1175 * - encoding: set by user.
1176 * - decoding: unused
1181 * motion estimation compare function.
1182 * - encoding: set by user.
1183 * - decoding: unused
1187 * subpixel motion estimation compare function.
1188 * - encoding: set by user.
1189 * - decoding: unused
1193 * macroblock compare function (not supported yet).
1194 * - encoding: set by user.
1195 * - decoding: unused
1199 * interlaced dct compare function
1200 * - encoding: set by user.
1201 * - decoding: unused
1204 #define FF_CMP_SAD 0
1205 #define FF_CMP_SSE 1
1206 #define FF_CMP_SATD 2
1207 #define FF_CMP_DCT 3
1208 #define FF_CMP_PSNR 4
1209 #define FF_CMP_BIT 5
1211 #define FF_CMP_ZERO 7
1212 #define FF_CMP_VSAD 8
1213 #define FF_CMP_VSSE 9
1214 #define FF_CMP_CHROMA 256
1217 * ME diamond size & shape.
1218 * - encoding: set by user.
1219 * - decoding: unused
1224 * amount of previous MV predictors (2a+1 x 2a+1 square).
1225 * - encoding: set by user.
1226 * - decoding: unused
1228 int last_predictor_count;
1231 * pre pass for motion estimation.
1232 * - encoding: set by user.
1233 * - decoding: unused
1238 * motion estimation pre pass compare function.
1239 * - encoding: set by user.
1240 * - decoding: unused
1245 * ME pre pass diamond size & shape.
1246 * - encoding: set by user.
1247 * - decoding: unused
1252 * subpel ME quality.
1253 * - encoding: set by user.
1254 * - decoding: unused
1256 int me_subpel_quality;
1259 * callback to negotiate the pixelFormat.
1260 * @param fmt is the list of formats which are supported by the codec,
1261 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1262 * the first is allways the native one
1263 * @return the choosen format
1264 * - encoding: unused
1265 * - decoding: set by user, if not set then the native format will always be choosen
1267 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1270 * DTG active format information (additionnal aspect ratio
1271 * information only used in DVB MPEG2 transport streams). 0 if
1274 * - encoding: unused.
1275 * - decoding: set by decoder
1277 int dtg_active_format;
1278 #define FF_DTG_AFD_SAME 8
1279 #define FF_DTG_AFD_4_3 9
1280 #define FF_DTG_AFD_16_9 10
1281 #define FF_DTG_AFD_14_9 11
1282 #define FF_DTG_AFD_4_3_SP_14_9 13
1283 #define FF_DTG_AFD_16_9_SP_14_9 14
1284 #define FF_DTG_AFD_SP_4_3 15
1287 * Maximum motion estimation search range in subpel units.
1288 * if 0 then no limit
1290 * - encoding: set by user.
1291 * - decoding: unused.
1297 * for variable fps this is 1
1298 * - encoding: set by user.
1299 * - decoding: set by lavc.
1300 * @todo move this after frame_rate
1303 int frame_rate_base;
1305 * intra quantizer bias.
1306 * - encoding: set by user.
1307 * - decoding: unused
1309 int intra_quant_bias;
1310 #define FF_DEFAULT_QUANT_BIAS 999999
1313 * inter quantizer bias.
1314 * - encoding: set by user.
1315 * - decoding: unused
1317 int inter_quant_bias;
1321 * - encoding: unused.
1322 * - decoding: which clrtable should be used for 8bit RGB images
1323 * table have to be stored somewhere FIXME
1328 * internal_buffer count.
1329 * Dont touch, used by lavc default_get_buffer()
1331 int internal_buffer_count;
1335 * Dont touch, used by lavc default_get_buffer()
1337 void *internal_buffer;
1339 #define FF_LAMBDA_SHIFT 7
1340 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1341 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1342 #define FF_LAMBDA_MAX (256*128-1)
1344 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1346 * global quality for codecs which cannot change it per frame.
1347 * this should be proportional to MPEG1/2/4 qscale.
1348 * - encoding: set by user.
1349 * - decoding: unused
1353 #define FF_CODER_TYPE_VLC 0
1354 #define FF_CODER_TYPE_AC 1
1357 * - encoding: set by user.
1358 * - decoding: unused
1364 * - encoding: set by user.
1365 * - decoding: unused
1371 * - encoding: unused
1372 * - decoding: set by user.
1375 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1376 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1377 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1380 * XVideo Motion Acceleration
1381 * - encoding: forbidden
1382 * - decoding: set by decoder
1384 int xvmc_acceleration;
1387 * macroblock decision mode
1388 * - encoding: set by user.
1389 * - decoding: unused
1392 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1393 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1394 #define FF_MB_DECISION_RD 2 ///< rate distoration
1397 * custom intra quantization matrix
1398 * - encoding: set by user, can be NULL
1399 * - decoding: set by lavc
1401 uint16_t *intra_matrix;
1404 * custom inter quantization matrix
1405 * - encoding: set by user, can be NULL
1406 * - decoding: set by lavc
1408 uint16_t *inter_matrix;
1411 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1412 * this is used to workaround some encoder bugs
1413 * - encoding: unused
1414 * - decoding: set by user, will be converted to upper case by lavc during init
1416 unsigned int stream_codec_tag;
1419 * scene change detection threshold.
1420 * 0 is default, larger means fewer detected scene changes
1421 * - encoding: set by user.
1422 * - decoding: unused
1424 int scenechange_threshold;
1427 * minimum lagrange multipler
1428 * - encoding: set by user.
1429 * - decoding: unused
1434 * maximum lagrange multipler
1435 * - encoding: set by user.
1436 * - decoding: unused
1441 * Palette control structure
1442 * - encoding: ??? (no palette-enabled encoder yet)
1443 * - decoding: set by user.
1445 struct AVPaletteControl *palctrl;
1448 * noise reduction strength
1449 * - encoding: set by user.
1450 * - decoding: unused
1452 int noise_reduction;
1455 * called at the beginning of a frame to get cr buffer for it.
1456 * buffer type (size, hints) must be the same. lavc won't check it.
1457 * lavc will pass previous buffer in pic, function should return
1458 * same buffer or new buffer with old frame "painted" into it.
1459 * if pic.data[0] == NULL must behave like get_buffer().
1460 * - encoding: unused
1461 * - decoding: set by lavc, user can override
1463 int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
1466 * number of bits which should be loaded into the rc buffer before decoding starts
1467 * - encoding: set by user.
1468 * - decoding: unused
1470 int rc_initial_buffer_occupancy;
1474 * - encoding: set by user.
1475 * - decoding: unused
1477 int inter_threshold;
1481 * - encoding: set by user.
1482 * - decoding: set by user.
1487 * simulates errors in the bitstream to test error concealment.
1488 * - encoding: set by user.
1489 * - decoding: unused.
1494 * MP3 antialias algorithm, see FF_AA_* below.
1495 * - encoding: unused
1496 * - decoding: set by user
1499 #define FF_AA_AUTO 0
1500 #define FF_AA_FASTINT 1 //not implemented yet
1502 #define FF_AA_FLOAT 3
1504 * Quantizer noise shaping.
1505 * - encoding: set by user
1506 * - decoding: unused
1508 int quantizer_noise_shaping;
1515 typedef struct AVOption {
1516 /** options' name */
1517 const char *name; /* if name is NULL, it indicates a link to next */
1518 /** short English text help or const struct AVOption* subpointer */
1519 const char *help; // const struct AVOption* sub;
1520 /** offset to context structure where the parsed value should be stored */
1522 /** options' type */
1524 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1525 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1526 #define FF_OPT_TYPE_INT 3 ///< integer
1527 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1528 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1529 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1530 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1531 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1532 /** min value (min == max -> no limits) */
1534 /** maximum value for double/int */
1536 /** default boo [0,1]l/double/int value */
1539 * default string value (with optional semicolon delimited extra option-list
1540 * i.e. option1;option2;option3
1541 * defval might select other then first argument as default
1544 #define FF_OPT_MAX_DEPTH 10
1548 * Parse option(s) and sets fields in passed structure
1549 * @param strct structure where the parsed results will be written
1550 * @param list list with AVOptions
1551 * @param opts string with options for parsing
1553 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1559 typedef struct AVCodec {
1561 enum CodecType type;
1564 int (*init)(AVCodecContext *);
1565 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1566 int (*close)(AVCodecContext *);
1567 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1568 uint8_t *buf, int buf_size);
1570 const AVOption *options;
1571 struct AVCodec *next;
1572 void (*flush)(AVCodecContext *);
1576 * four components are given, that's all.
1577 * the last component is alpha
1579 typedef struct AVPicture {
1581 int linesize[4]; ///< number of bytes per line
1586 * This structure defines a method for communicating palette changes
1587 * between and demuxer and a decoder.
1589 #define AVPALETTE_SIZE 1024
1590 #define AVPALETTE_COUNT 256
1591 typedef struct AVPaletteControl {
1593 /* demuxer sets this to 1 to indicate the palette has changed;
1594 * decoder resets to 0 */
1595 int palette_changed;
1597 /* 4-byte ARGB palette entries, stored in native byte order; note that
1598 * the individual palette components should be on a 8-bit scale; if
1599 * the palette data comes from a IBM VGA native format, the component
1600 * data is probably 6 bits in size and needs to be scaled */
1601 unsigned int palette[AVPALETTE_COUNT];
1605 extern AVCodec ac3_encoder;
1606 extern AVCodec mp2_encoder;
1607 extern AVCodec mp3lame_encoder;
1608 extern AVCodec oggvorbis_encoder;
1609 extern AVCodec faac_encoder;
1610 extern AVCodec mpeg1video_encoder;
1611 extern AVCodec mpeg2video_encoder;
1612 extern AVCodec h263_encoder;
1613 extern AVCodec h263p_encoder;
1614 extern AVCodec flv_encoder;
1615 extern AVCodec rv10_encoder;
1616 extern AVCodec rv20_encoder;
1617 extern AVCodec mjpeg_encoder;
1618 extern AVCodec ljpeg_encoder;
1619 extern AVCodec mpeg4_encoder;
1620 extern AVCodec msmpeg4v1_encoder;
1621 extern AVCodec msmpeg4v2_encoder;
1622 extern AVCodec msmpeg4v3_encoder;
1623 extern AVCodec wmv1_encoder;
1624 extern AVCodec wmv2_encoder;
1625 extern AVCodec huffyuv_encoder;
1626 extern AVCodec h264_encoder;
1627 extern AVCodec asv1_encoder;
1628 extern AVCodec asv2_encoder;
1629 extern AVCodec vcr1_encoder;
1630 extern AVCodec ffv1_encoder;
1631 extern AVCodec mdec_encoder;
1632 extern AVCodec zlib_encoder;
1634 extern AVCodec h263_decoder;
1635 extern AVCodec mpeg4_decoder;
1636 extern AVCodec msmpeg4v1_decoder;
1637 extern AVCodec msmpeg4v2_decoder;
1638 extern AVCodec msmpeg4v3_decoder;
1639 extern AVCodec wmv1_decoder;
1640 extern AVCodec wmv2_decoder;
1641 extern AVCodec mpeg1video_decoder;
1642 extern AVCodec mpeg2video_decoder;
1643 extern AVCodec mpegvideo_decoder;
1644 extern AVCodec mpeg_xvmc_decoder;
1645 extern AVCodec h263i_decoder;
1646 extern AVCodec flv_decoder;
1647 extern AVCodec rv10_decoder;
1648 extern AVCodec rv20_decoder;
1649 extern AVCodec svq1_decoder;
1650 extern AVCodec svq3_decoder;
1651 extern AVCodec dvvideo_decoder;
1652 extern AVCodec wmav1_decoder;
1653 extern AVCodec wmav2_decoder;
1654 extern AVCodec mjpeg_decoder;
1655 extern AVCodec mjpegb_decoder;
1656 extern AVCodec sp5x_decoder;
1657 extern AVCodec mp2_decoder;
1658 extern AVCodec mp3_decoder;
1659 extern AVCodec mace3_decoder;
1660 extern AVCodec mace6_decoder;
1661 extern AVCodec huffyuv_decoder;
1662 extern AVCodec oggvorbis_decoder;
1663 extern AVCodec cyuv_decoder;
1664 extern AVCodec h264_decoder;
1665 extern AVCodec indeo3_decoder;
1666 extern AVCodec vp3_decoder;
1667 extern AVCodec theora_decoder;
1668 extern AVCodec amr_nb_decoder;
1669 extern AVCodec amr_nb_encoder;
1670 extern AVCodec amr_wb_encoder;
1671 extern AVCodec amr_wb_decoder;
1672 extern AVCodec aac_decoder;
1673 extern AVCodec mpeg4aac_decoder;
1674 extern AVCodec asv1_decoder;
1675 extern AVCodec asv2_decoder;
1676 extern AVCodec vcr1_decoder;
1677 extern AVCodec cljr_decoder;
1678 extern AVCodec ffv1_decoder;
1679 extern AVCodec fourxm_decoder;
1680 extern AVCodec mdec_decoder;
1681 extern AVCodec roq_decoder;
1682 extern AVCodec interplay_video_decoder;
1683 extern AVCodec xan_wc3_decoder;
1684 extern AVCodec rpza_decoder;
1685 extern AVCodec cinepak_decoder;
1686 extern AVCodec msrle_decoder;
1687 extern AVCodec msvideo1_decoder;
1688 extern AVCodec vqa_decoder;
1689 extern AVCodec idcin_decoder;
1690 extern AVCodec eightbps_decoder;
1691 extern AVCodec smc_decoder;
1692 extern AVCodec flic_decoder;
1693 extern AVCodec vmdvideo_decoder;
1694 extern AVCodec vmdaudio_decoder;
1695 extern AVCodec truemotion1_decoder;
1696 extern AVCodec mszh_decoder;
1697 extern AVCodec zlib_decoder;
1698 extern AVCodec ra_144_decoder;
1699 extern AVCodec ra_288_decoder;
1700 extern AVCodec roq_dpcm_decoder;
1701 extern AVCodec interplay_dpcm_decoder;
1702 extern AVCodec xan_dpcm_decoder;
1705 #define PCM_CODEC(id, name) \
1706 extern AVCodec name ## _decoder; \
1707 extern AVCodec name ## _encoder
1709 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1710 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1711 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1712 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1713 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1714 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1715 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1716 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1720 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1721 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1722 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1723 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1724 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1725 PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
1726 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1727 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1728 PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1729 PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
1730 PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1734 /* dummy raw video codec */
1735 extern AVCodec rawvideo_encoder;
1736 extern AVCodec rawvideo_decoder;
1738 /* the following codecs use external GPL libs */
1739 extern AVCodec ac3_decoder;
1743 struct ReSampleContext;
1745 typedef struct ReSampleContext ReSampleContext;
1747 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1748 int output_rate, int input_rate);
1749 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1750 void audio_resample_close(ReSampleContext *s);
1752 /* YUV420 format is assumed ! */
1754 struct ImgReSampleContext;
1756 typedef struct ImgReSampleContext ImgReSampleContext;
1758 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1759 int input_width, int input_height);
1761 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1762 int iwidth, int iheight,
1763 int topBand, int bottomBand,
1764 int leftBand, int rightBand);
1766 void img_resample(ImgReSampleContext *s,
1767 AVPicture *output, const AVPicture *input);
1769 void img_resample_close(ImgReSampleContext *s);
1772 * Allocate memory for a picture. Call avpicture_free to free it.
1774 * @param picture the picture to be filled in.
1775 * @param pix_fmt the format of the picture.
1776 * @param width the width of the picture.
1777 * @param height the height of the picture.
1778 * @return 0 if successful, -1 if not.
1780 int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
1782 /* Free a picture previously allocated by avpicture_alloc. */
1783 void avpicture_free(AVPicture *picture);
1785 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1786 int pix_fmt, int width, int height);
1787 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1788 unsigned char *dest, int dest_size);
1789 int avpicture_get_size(int pix_fmt, int width, int height);
1790 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1791 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1792 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1794 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1795 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1796 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1797 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1798 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1799 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1801 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1803 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1804 int has_alpha, int *loss_ptr);
1806 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1807 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1808 int img_get_alpha_info(const AVPicture *src,
1809 int pix_fmt, int width, int height);
1811 /* convert among pixel formats */
1812 int img_convert(AVPicture *dst, int dst_pix_fmt,
1813 const AVPicture *src, int pix_fmt,
1814 int width, int height);
1816 /* deinterlace a picture */
1817 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1818 int pix_fmt, int width, int height);
1820 /* external high level API */
1822 extern AVCodec *first_avcodec;
1824 /* returns LIBAVCODEC_VERSION_INT constant */
1825 unsigned avcodec_version(void);
1826 /* returns LIBAVCODEC_BUILD constant */
1827 unsigned avcodec_build(void);
1828 void avcodec_init(void);
1830 void register_avcodec(AVCodec *format);
1831 AVCodec *avcodec_find_encoder(enum CodecID id);
1832 AVCodec *avcodec_find_encoder_by_name(const char *name);
1833 AVCodec *avcodec_find_decoder(enum CodecID id);
1834 AVCodec *avcodec_find_decoder_by_name(const char *name);
1835 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1837 void avcodec_get_context_defaults(AVCodecContext *s);
1838 AVCodecContext *avcodec_alloc_context(void);
1839 AVFrame *avcodec_alloc_frame(void);
1841 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1842 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1843 void avcodec_default_free_buffers(AVCodecContext *s);
1846 * opens / inits the AVCodecContext.
1849 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1851 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1852 int *frame_size_ptr,
1853 uint8_t *buf, int buf_size);
1854 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1855 int *got_picture_ptr,
1856 uint8_t *buf, int buf_size);
1857 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1859 uint8_t *buf, int buf_size);
1860 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1861 const short *samples);
1862 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1863 const AVFrame *pict);
1865 int avcodec_close(AVCodecContext *avctx);
1867 void avcodec_register_all(void);
1869 void avcodec_flush_buffers(AVCodecContext *avctx);
1871 /* misc usefull functions */
1874 * returns a single letter to describe the picture type
1876 char av_get_pict_type_char(int pict_type);
1879 * reduce a fraction.
1880 * this is usefull for framerate calculations
1881 * @param max the maximum allowed for dst_nom & dst_den
1882 * @return 1 if exact, 0 otherwise
1884 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1887 * rescale a 64bit integer.
1888 * a simple a*b/c isnt possible as it can overflow
1890 int64_t av_rescale(int64_t a, int b, int c);
1894 * Interface for 0.5.0 version
1896 * do not even think about it's usage for this moment
1900 /// compressed size used from given memory buffer
1902 /// I/P/B frame type
1908 * order can't be changed - once it was defined
1912 AVC_OPEN_BY_NAME = 0xACA000,
1913 AVC_OPEN_BY_CODEC_ID,
1918 // pin - struct { uint8_t* src, uint_t src_size }
1919 // pout - struct { AVPicture* img, consumed_bytes,
1921 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1922 // pout - uint_t used_from_dest_size
1925 // query/get video commands
1926 AVC_GET_VERSION = 0xACB000,
1930 AVC_GET_QUANT_TABLE,
1933 // query/get audio commands
1934 AVC_GET_FRAME_SIZE = 0xABC000,
1936 // maybe define some simple structure which
1937 // might be passed to the user - but they can't
1938 // contain any codec specific parts and these
1939 // calls are usualy necessary only few times
1941 // set video commands
1942 AVC_SET_WIDTH = 0xACD000,
1945 // set video encoding commands
1946 AVC_SET_FRAME_RATE = 0xACD800,
1950 // set audio commands
1951 AVC_SET_SAMPLE_RATE = 0xACE000,
1957 * \param handle allocated private structure by libavcodec
1958 * for initialization pass NULL - will be returned pout
1959 * user is supposed to know nothing about its structure
1960 * \param cmd type of operation to be performed
1961 * \param pint input parameter
1962 * \param pout output parameter
1964 * \returns command status - eventually for query command it might return
1965 * integer resulting value
1967 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1970 typedef struct AVCodecParserContext {
1972 struct AVCodecParser *parser;
1973 int64_t frame_offset; /* offset of the current frame */
1974 int64_t cur_offset; /* current offset
1975 (incremented by each av_parser_parse()) */
1976 int64_t last_frame_offset; /* offset of the last frame */
1978 int pict_type; /* XXX: put it back in AVCodecContext */
1979 int repeat_pict; /* XXX: put it back in AVCodecContext */
1980 int64_t pts; /* pts of the current frame */
1981 int64_t dts; /* dts of the current frame */
1987 #define AV_PARSER_PTS_NB 4
1988 int cur_frame_start_index;
1989 int64_t cur_frame_offset[AV_PARSER_PTS_NB];
1990 int64_t cur_frame_pts[AV_PARSER_PTS_NB];
1991 int64_t cur_frame_dts[AV_PARSER_PTS_NB];
1992 } AVCodecParserContext;
1994 typedef struct AVCodecParser {
1995 int codec_ids[3]; /* several codec IDs are permitted */
1997 int (*parser_init)(AVCodecParserContext *s);
1998 int (*parser_parse)(AVCodecParserContext *s,
1999 AVCodecContext *avctx,
2000 uint8_t **poutbuf, int *poutbuf_size,
2001 const uint8_t *buf, int buf_size);
2002 void (*parser_close)(AVCodecParserContext *s);
2003 struct AVCodecParser *next;
2006 extern AVCodecParser *av_first_parser;
2008 void av_register_codec_parser(AVCodecParser *parser);
2009 AVCodecParserContext *av_parser_init(int codec_id);
2010 int av_parser_parse(AVCodecParserContext *s,
2011 AVCodecContext *avctx,
2012 uint8_t **poutbuf, int *poutbuf_size,
2013 const uint8_t *buf, int buf_size,
2014 int64_t pts, int64_t dts);
2015 void av_parser_close(AVCodecParserContext *s);
2017 extern AVCodecParser mpegvideo_parser;
2018 extern AVCodecParser mpeg4video_parser;
2019 extern AVCodecParser h263_parser;
2020 extern AVCodecParser h264_parser;
2021 extern AVCodecParser mpegaudio_parser;
2022 extern AVCodecParser ac3_parser;
2025 void *av_malloc(unsigned int size);
2026 void *av_mallocz(unsigned int size);
2027 void *av_realloc(void *ptr, unsigned int size);
2028 void av_free(void *ptr);
2029 char *av_strdup(const char *s);
2030 void __av_freep(void **ptr);
2031 #define av_freep(p) __av_freep((void **)(p))
2032 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
2033 /* for static data only */
2034 /* call av_free_static to release all staticaly allocated tables */
2035 void av_free_static(void);
2036 void *__av_mallocz_static(void** location, unsigned int size);
2037 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
2039 /* add by bero : in adx.c */
2040 int is_adx(const unsigned char *buf,size_t bufsize);
2042 void img_copy(AVPicture *dst, const AVPicture *src,
2043 int pix_fmt, int width, int height);
2049 #define AV_LOG_ERROR 0
2050 #define AV_LOG_INFO 1
2051 #define AV_LOG_DEBUG 2
2053 extern void av_log(AVCodecContext*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
2054 extern void av_vlog(AVCodecContext*, int level, const char *fmt, va_list);
2055 extern int av_log_get_level(void);
2056 extern void av_log_set_level(int);
2057 extern void av_log_set_callback(void (*)(AVCodecContext*, int, const char*, va_list));
2059 #undef AV_LOG_TRAP_PRINTF
2060 #ifdef AV_LOG_TRAP_PRINTF
2061 #define printf DO NOT USE
2062 #define fprintf DO NOT USE
2064 #define stderr DO NOT USE
2071 #endif /* AVCODEC_H */