16 #define FFMPEG_VERSION_INT 0x000408
17 #define FFMPEG_VERSION "0.4.8"
18 #define LIBAVCODEC_BUILD 4684
20 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
21 #define LIBAVCODEC_VERSION FFMPEG_VERSION
23 #define AV_STRINGIFY(s) AV_TOSTRING(s)
24 #define AV_TOSTRING(s) #s
25 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
30 CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
31 CODEC_ID_MPEG2VIDEO_XVMC,
35 CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
74 CODEC_ID_INTERPLAY_VIDEO,
84 /* various pcm "codecs" */
94 /* various adpcm codecs */
95 CODEC_ID_ADPCM_IMA_QT,
96 CODEC_ID_ADPCM_IMA_WAV,
97 CODEC_ID_ADPCM_IMA_DK3,
98 CODEC_ID_ADPCM_IMA_DK4,
99 CODEC_ID_ADPCM_IMA_WS,
107 /* RealAudio codecs*/
111 /* various DPCM codecs */
113 CODEC_ID_INTERPLAY_DPCM,
117 /* CODEC_ID_MP3LAME is absolete */
118 #define CODEC_ID_MP3LAME CODEC_ID_MP3
121 CODEC_TYPE_UNKNOWN = -1,
127 * Pixel format. Notes:
129 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
130 * color is put together as:
131 * (A << 24) | (R << 16) | (G << 8) | B
132 * This is stored as BGRA on little endian CPU architectures and ARGB on
135 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
136 * image data is stored in AVFrame.data[0]. The palette is transported in
137 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
138 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
139 * also endian-specific).
142 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
144 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
145 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
146 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
147 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
148 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
149 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
150 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
151 PIX_FMT_RGB565, ///< always stored in cpu endianness
152 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
154 PIX_FMT_MONOWHITE, ///< 0 is white
155 PIX_FMT_MONOBLACK, ///< 0 is black
156 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
157 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
158 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
159 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
160 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
161 PIX_FMT_XVMC_MPEG2_IDCT,
165 /* currently unused, may be used if 24/32 bits samples ever supported */
167 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
171 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
174 * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
175 * this is mainly needed because some optimized bitstream readers read
176 * 32 or 64 bit at once and could read over the end<br>
177 * Note, if the first 23 bits of the additional bytes are not 0 then damaged
178 * MPEG bitstreams could cause overread and segfault
180 #define FF_INPUT_BUFFER_PADDING_SIZE 8
182 /* motion estimation type, EPZS by default */
192 typedef struct RcOverride{
195 int qscale; // if this is 0 then quality_factor will be used instead
196 float quality_factor;
199 /* only for ME compatiblity with old apps */
200 extern int motion_estimation_method;
202 /* ME algos sorted by quality */
204 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
205 ME_X1, ME_EPZS, ME_FULL };
208 #define FF_MAX_B_FRAMES 8
211 these flags can be passed in AVCodecContext.flags before initing
212 Note: note not everything is supported yet
215 #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
216 #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
217 #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
218 #define CODEC_FLAG_GMC 0x0020 ///< use GMC
219 #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
220 #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
221 /* parent program gurantees that the input for b-frame containing streams is not written to
222 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
223 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
224 #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
225 #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
226 #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
227 #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
228 #define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
229 #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
230 #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
231 of only at frame boundaries */
232 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
233 #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
234 #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
235 #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
236 #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
237 #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
238 #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
239 /* Fx : Flag for h263+ extra options */
240 #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
241 #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
242 #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
243 #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
244 /* For advanced prediction mode, we reuse the 4MV flag */
245 /* Unsupported options :
246 * Syntax Arithmetic coding (SAC)
247 * Deblocking filter internal loop
249 * Reference Picture Selection
250 * Independant Segment Decoding
251 * Alternative Inter * VLC
252 * Modified Quantization */
254 /* codec capabilities */
256 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
258 * Codec uses get_buffer() for allocating buffers.
259 * direct rendering method 1
261 #define CODEC_CAP_DR1 0x0002
262 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
264 #define CODEC_CAP_PARSE_ONLY 0x0004
265 #define CODEC_CAP_TRUNCATED 0x0008
267 #define FF_COMMON_FRAME \
269 * pointer to the picture planes.\
270 * this might be different from the first allocated byte\
277 * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
278 * this isnt used by lavc unless the default get/release_buffer() is used\
284 * 1 -> keyframe, 0-> not\
285 * - encoding: set by lavc\
286 * - decoding: set by lavc\
291 * picture type of the frame, see ?_TYPE below.\
292 * - encoding: set by lavc for coded_picture (and set by user for input)\
293 * - decoding: set by lavc\
298 * presentation timestamp in micro seconds (time when frame should be shown to user)\
299 * if 0 then the frame_rate will be used as reference\
300 * - encoding: MUST be set by user\
301 * - decoding: set by lavc\
306 * picture number in bitstream order.\
307 * - encoding: set by\
308 * - decoding: set by lavc\
310 int coded_picture_number;\
312 * picture number in display order.\
313 * - encoding: set by\
314 * - decoding: set by lavc\
316 int display_picture_number;\
319 * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) \
320 * - encoding: set by lavc for coded_picture (and set by user for input)\
321 * - decoding: set by lavc\
326 * buffer age (1->was last buffer and dint change, 2->..., ...).\
327 * set to INT_MAX if the buffer has not been used yet \
328 * - encoding: unused\
329 * - decoding: MUST be set by get_buffer()\
334 * is this picture used as reference\
335 * - encoding: unused\
336 * - decoding: set by lavc (before get_buffer() call))\
342 * - encoding: unused\
343 * - decoding: set by lavc\
345 int8_t *qscale_table;\
348 * - encoding: unused\
349 * - decoding: set by lavc\
354 * mbskip_table[mb]>=1 if MB didnt change\
355 * stride= mb_width = (width+15)>>4\
356 * - encoding: unused\
357 * - decoding: set by lavc\
359 uint8_t *mbskip_table;\
362 * for some private data of the user\
363 * - encoding: unused\
364 * - decoding: set by user\
370 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
371 * - decoding: unused\
376 * type of the buffer (to keep track of who has to dealloc data[*])\
377 * - encoding: set by the one who allocs it\
378 * - decoding: set by the one who allocs it\
379 * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
384 * when decoding, this signal how much the picture must be delayed.\
385 * extra_delay = repeat_pict / (2*fps)\
386 * - encoding: unused\
387 * - decoding: set by lavc\
396 #define FF_QSCALE_TYPE_MPEG1 0
397 #define FF_QSCALE_TYPE_MPEG2 1
399 #define FF_BUFFER_TYPE_INTERNAL 1
400 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
401 #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
402 #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
405 #define FF_I_TYPE 1 // Intra
406 #define FF_P_TYPE 2 // Predicted
407 #define FF_B_TYPE 3 // Bi-dir predicted
408 #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
415 typedef struct AVFrame {
419 #define DEFAULT_FRAME_RATE_BASE 1001000
422 * main external api structure.
424 typedef struct AVCodecContext {
426 * the average bitrate.
427 * - encoding: set by user. unused for constant quantizer encoding
428 * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
433 * number of bits the bitstream is allowed to diverge from the reference.
434 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
435 * - encoding: set by user. unused for constant quantizer encoding
438 int bit_rate_tolerance;
442 * - encoding: set by user.
443 * - decoding: set by user.
448 * some codecs needs additionnal format info. It is stored here
449 * - encoding: set by user.
450 * - decoding: set by lavc. (FIXME is this ok?)
455 * motion estimation algorithm used for video coding.
456 * - encoding: MUST be set by user.
462 * some codecs need / can use extra-data like huffman tables.
463 * mjpeg: huffman tables
464 * rv10: additional flags
465 * mpeg4: global headers (they can be in the bitstream or here)
466 * - encoding: set/allocated/freed by lavc.
467 * - decoding: set/allocated/freed by user.
474 * frames per sec multiplied by frame_rate_base.
475 * for variable fps this is the precission, so if the timestamps
476 * can be specified in msec precssion then this is 1000*frame_rate_base
477 * - encoding: MUST be set by user
478 * - decoding: set by lavc. 0 or the frame_rate if available
484 * - encoding: MUST be set by user.
485 * - decoding: set by user, some codecs might override / change it during playback
489 #define FF_ASPECT_SQUARE 1
490 #define FF_ASPECT_4_3_625 2
491 #define FF_ASPECT_4_3_525 3
492 #define FF_ASPECT_16_9_625 4
493 #define FF_ASPECT_16_9_525 5
494 #define FF_ASPECT_EXTENDED 15
497 * the number of pictures in a group of pitures, or 0 for intra_only.
498 * - encoding: set by user.
504 * pixel format, see PIX_FMT_xxx.
505 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
506 * conversion is in order. This only works for
507 * codecs with one supported pix_fmt, we should
508 * do something for a generic case as well.
509 * - decoding: set by lavc.
511 enum PixelFormat pix_fmt;
514 * Frame rate emulation. If not zero lower layer (i.e. format handler)
515 * has to read frames at native frame rate.
516 * - encoding: set by user.
517 * - decoding: unused.
522 * if non NULL, 'draw_horiz_band' is called by the libavcodec
523 * decoder to draw an horizontal band. It improve cache usage. Not
524 * all codecs can do that. You must check the codec capabilities
527 * - decoding: set by user.
528 * @param height the height of the slice
529 * @param y the y position of the slice
530 * @param type 1->top field, 2->bottom field, 3->frame
531 * @param offset offset into the AVFrame.data from which the slice should be read
533 void (*draw_horiz_band)(struct AVCodecContext *s,
534 const AVFrame *src, int offset[4],
535 int y, int type, int height);
538 int sample_rate; ///< samples per sec
540 int sample_fmt; ///< sample format, currenly unused
542 /* the following data should not be initialized */
543 int frame_size; ///< in samples, initialized when calling 'init'
544 int frame_number; ///< audio or video frame number
545 int real_pict_num; ///< returns the real picture number of previous encoded frame
548 * number of frames the decoded output will be delayed relative to
550 * - encoding: set by lavc.
555 /* - encoding parameters */
556 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
557 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
561 * - encoding: set by user.
568 * - encoding: set by user.
574 * maximum quantizer difference etween frames.
575 * - encoding: set by user.
581 * maximum number of b frames between non b frames.
582 * note: the output will be delayed by max_b_frames+1 relative to the input
583 * - encoding: set by user.
589 * qscale factor between ip and b frames.
590 * - encoding: set by user.
593 float b_quant_factor;
595 /** obsolete FIXME remove */
597 int b_frame_strategy;
602 * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
606 struct AVCodec *codec;
610 /* The following data is for RTP friendly coding */
611 /* By now only H.263/H.263+/MPEG4 coder honours this */
612 int rtp_mode; /* 1 for activate RTP friendly-mode */
613 /* highers numbers represent more error-prone */
614 /* enviroments, by now just "1" exist */
616 int rtp_payload_size; /* The size of the RTP payload, the coder will */
617 /* do it's best to deliver a chunk with size */
618 /* below rtp_payload_size, the chunk will start */
619 /* with a start code on some codecs like H.263 */
620 /* This doesn't take account of any particular */
621 /* headers inside the transmited RTP payload */
624 /* The RTP callcack: This function is called */
625 /* every time the encoder as a packet to send */
626 /* Depends on the encoder if the data starts */
627 /* with a Start Code (it should) H.263 does */
628 void (*rtp_callback)(void *data, int size, int packet_number);
630 /* statistics, used for 2-pass encoding */
641 * number of bits used for the previously encoded frame.
642 * - encoding: set by lavc
648 * private data of the user, can be used to carry app specific stuff.
649 * - encoding: set by user
650 * - decoding: set by user
655 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
656 enum CodecID codec_id; /* see CODEC_ID_xxx */
659 * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
660 * this is used to workaround some encoder bugs
661 * - encoding: set by user, if not then the default based on codec_id will be used
662 * - decoding: set by user, will be converted to upper case by lavc during init
664 unsigned int codec_tag;
667 * workaround bugs in encoders which sometimes cannot be detected automatically.
669 * - decoding: set by user
672 #define FF_BUG_AUTODETECT 1 ///< autodetection
673 #define FF_BUG_OLD_MSMPEG4 2
674 #define FF_BUG_XVID_ILACE 4
675 #define FF_BUG_UMP4 8
676 #define FF_BUG_NO_PADDING 16
677 #define FF_BUG_AC_VLC 32
678 #define FF_BUG_QPEL_CHROMA 64
679 #define FF_BUG_STD_QPEL 128
680 #define FF_BUG_QPEL_CHROMA2 256
681 #define FF_BUG_DIRECT_BLOCKSIZE 512
682 #define FF_BUG_EDGE 1024
683 //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
686 * luma single coeff elimination threshold.
687 * - encoding: set by user
690 int luma_elim_threshold;
693 * chroma single coeff elimination threshold.
694 * - encoding: set by user
697 int chroma_elim_threshold;
700 * strictly follow the std (MPEG4, ...).
701 * - encoding: set by user
704 int strict_std_compliance;
707 * qscale offset between ip and b frames.
708 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
709 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
710 * - encoding: set by user.
713 float b_quant_offset;
716 * error resilience higher values will detect more errors but may missdetect
717 * some more or less valid parts as errors.
719 * - decoding: set by user
721 int error_resilience;
722 #define FF_ER_CAREFULL 1
723 #define FF_ER_COMPLIANT 2
724 #define FF_ER_AGGRESSIVE 3
725 #define FF_ER_VERY_AGGRESSIVE 4
728 * called at the beginning of each frame to get a buffer for it.
729 * if pic.reference is set then the frame will be read later by lavc
730 * width and height should be rounded up to the next multiple of 16
732 * - decoding: set by lavc, user can override
734 int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
737 * called to release buffers which where allocated with get_buffer.
738 * a released buffer can be reused in get_buffer()
739 * pic.data[*] must be set to NULL
741 * - decoding: set by lavc, user can override
743 void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
746 * is 1 if the decoded stream contains b frames, 0 otherwise.
748 * - decoding: set by lavc
752 int block_align; ///< used by some WAV based audio codecs
754 int parse_only; /* - decoding only: if true, only parsing is done
755 (function avcodec_parse_frame()). The frame
756 data is returned. Only MPEG codecs support this now. */
759 * 0-> h263 quant 1-> mpeg quant.
760 * - encoding: set by user.
766 * pass1 encoding statistics output buffer.
767 * - encoding: set by lavc
773 * pass2 encoding statistics input buffer.
774 * concatenated stuff from stats_out of pass1 should be placed here
775 * - encoding: allocated/set/freed by user
781 * ratecontrol qmin qmax limiting method.
782 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
783 * - encoding: set by user.
792 * ratecontrol override, see RcOverride.
793 * - encoding: allocated/set/freed by user.
796 RcOverride *rc_override;
797 int rc_override_count;
800 * rate control equation.
801 * - encoding: set by user
808 * - encoding: set by user.
815 * - encoding: set by user.
821 * decoder bitstream buffer size.
822 * - encoding: set by user.
826 float rc_buffer_aggressivity;
829 * qscale factor between p and i frames.
830 * - encoding: set by user.
833 float i_quant_factor;
836 * qscale offset between p and i frames.
837 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
838 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
839 * - encoding: set by user.
842 float i_quant_offset;
845 * initial complexity for pass1 ratecontrol.
846 * - encoding: set by user.
849 float rc_initial_cplx;
852 * dct algorithm, see FF_DCT_* below.
853 * - encoding: set by user
857 #define FF_DCT_AUTO 0
858 #define FF_DCT_FASTINT 1
861 #define FF_DCT_MLIB 4
862 #define FF_DCT_ALTIVEC 5
865 * luminance masking (0-> disabled).
866 * - encoding: set by user
872 * temporary complexity masking (0-> disabled).
873 * - encoding: set by user
876 float temporal_cplx_masking;
879 * spatial complexity masking (0-> disabled).
880 * - encoding: set by user
883 float spatial_cplx_masking;
886 * p block masking (0-> disabled).
887 * - encoding: set by user
893 * darkness masking (0-> disabled).
894 * - encoding: set by user
900 /* for binary compatibility */
904 * idct algorithm, see FF_IDCT_* below.
905 * - encoding: set by user
906 * - decoding: set by user
909 #define FF_IDCT_AUTO 0
910 #define FF_IDCT_INT 1
911 #define FF_IDCT_SIMPLE 2
912 #define FF_IDCT_SIMPLEMMX 3
913 #define FF_IDCT_LIBMPEG2MMX 4
914 #define FF_IDCT_PS2 5
915 #define FF_IDCT_MLIB 6
916 #define FF_IDCT_ARM 7
917 #define FF_IDCT_ALTIVEC 8
918 #define FF_IDCT_SH4 9
919 #define FF_IDCT_SIMPLEARM 10
923 * - encoding: set by lavc
924 * - decoding: set by user (or 0)
928 * slice offsets in the frame in bytes.
929 * - encoding: set/allocated by lavc
930 * - decoding: set/allocated by user (or NULL)
935 * error concealment flags.
937 * - decoding: set by user
939 int error_concealment;
940 #define FF_EC_GUESS_MVS 1
941 #define FF_EC_DEBLOCK 2
944 * dsp_mask could be add used to disable unwanted CPU features
945 * CPU features (i.e. MMX, SSE. ...)
947 * with FORCE flag you may instead enable given CPU features
948 * (Dangerous: usable in case of misdetection, improper usage however will
949 * result into program crash)
952 #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
953 /* lower 16 bits - CPU features */
955 #define FF_MM_MMX 0x0001 /* standard MMX */
956 #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
957 #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
958 #define FF_MM_SSE 0x0008 /* SSE functions */
959 #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
960 #endif /* HAVE_MMX */
963 * bits per sample/pixel from the demuxer (needed for huffyuv).
964 * - encoding: set by lavc
965 * - decoding: set by user
970 * prediction method (needed for huffyuv).
971 * - encoding: set by user
974 int prediction_method;
975 #define FF_PRED_LEFT 0
976 #define FF_PRED_PLANE 1
977 #define FF_PRED_MEDIAN 2
980 * aspect ratio (0 if unknown).
981 * - encoding: set by user.
982 * - decoding: set by lavc.
987 * the picture in the bitstream.
988 * - encoding: set by lavc
989 * - decoding: set by lavc
991 AVFrame *coded_frame;
995 * - encoding: set by user.
996 * - decoding: set by user.
999 #define FF_DEBUG_PICT_INFO 1
1000 #define FF_DEBUG_RC 2
1001 #define FF_DEBUG_BITSTREAM 4
1002 #define FF_DEBUG_MB_TYPE 8
1003 #define FF_DEBUG_QP 16
1004 #define FF_DEBUG_MV 32
1005 #define FF_DEBUG_VIS_MV 0x00000040
1006 #define FF_DEBUG_SKIP 0x00000080
1007 #define FF_DEBUG_STARTCODE 0x00000100
1008 #define FF_DEBUG_PTS 0x00000200
1009 #define FF_DEBUG_ER 0x00000400
1010 #define FF_DEBUG_MMCO 0x00000800
1011 #define FF_DEBUG_BUGS 0x00001000
1015 * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
1016 * - decoding: unused
1021 * minimum MB quantizer.
1022 * - encoding: set by user.
1023 * - decoding: unused
1028 * maximum MB quantizer.
1029 * - encoding: set by user.
1030 * - decoding: unused
1035 * motion estimation compare function.
1036 * - encoding: set by user.
1037 * - decoding: unused
1041 * subpixel motion estimation compare function.
1042 * - encoding: set by user.
1043 * - decoding: unused
1047 * macroblock compare function (not supported yet).
1048 * - encoding: set by user.
1049 * - decoding: unused
1052 #define FF_CMP_SAD 0
1053 #define FF_CMP_SSE 1
1054 #define FF_CMP_SATD 2
1055 #define FF_CMP_DCT 3
1056 #define FF_CMP_PSNR 4
1057 #define FF_CMP_BIT 5
1059 #define FF_CMP_ZERO 7
1060 #define FF_CMP_CHROMA 256
1063 * ME diamond size & shape.
1064 * - encoding: set by user.
1065 * - decoding: unused
1070 * amount of previous MV predictors (2a+1 x 2a+1 square).
1071 * - encoding: set by user.
1072 * - decoding: unused
1074 int last_predictor_count;
1077 * pre pass for motion estimation.
1078 * - encoding: set by user.
1079 * - decoding: unused
1084 * motion estimation pre pass compare function.
1085 * - encoding: set by user.
1086 * - decoding: unused
1091 * ME pre pass diamond size & shape.
1092 * - encoding: set by user.
1093 * - decoding: unused
1098 * subpel ME quality.
1099 * - encoding: set by user.
1100 * - decoding: unused
1102 int me_subpel_quality;
1105 * callback to negotiate the pixelFormat.
1106 * @param fmt is the list of formats which are supported by the codec,
1107 * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
1108 * the first is allways the native one
1109 * @return the choosen format
1110 * - encoding: unused
1111 * - decoding: set by user, if not set then the native format will always be choosen
1113 enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
1116 * DTG active format information (additionnal aspect ratio
1117 * information only used in DVB MPEG2 transport streams). 0 if
1120 * - encoding: unused.
1121 * - decoding: set by decoder
1123 int dtg_active_format;
1124 #define FF_DTG_AFD_SAME 8
1125 #define FF_DTG_AFD_4_3 9
1126 #define FF_DTG_AFD_16_9 10
1127 #define FF_DTG_AFD_14_9 11
1128 #define FF_DTG_AFD_4_3_SP_14_9 13
1129 #define FF_DTG_AFD_16_9_SP_14_9 14
1130 #define FF_DTG_AFD_SP_4_3 15
1133 * Maximum motion estimation search range in subpel units.
1134 * if 0 then no limit
1136 * - encoding: set by user.
1137 * - decoding: unused.
1143 * for variable fps this is 1
1144 * - encoding: set by user.
1145 * - decoding: set by lavc.
1146 * @todo move this after frame_rate
1149 int frame_rate_base;
1151 * intra quantizer bias.
1152 * - encoding: set by user.
1153 * - decoding: unused
1155 int intra_quant_bias;
1156 #define FF_DEFAULT_QUANT_BIAS 999999
1159 * inter quantizer bias.
1160 * - encoding: set by user.
1161 * - decoding: unused
1163 int inter_quant_bias;
1167 * - encoding: unused.
1168 * - decoding: which clrtable should be used for 8bit RGB images
1169 * table have to be stored somewhere FIXME
1174 * internal_buffer count.
1175 * Dont touch, used by lavc default_get_buffer()
1177 int internal_buffer_count;
1181 * Dont touch, used by lavc default_get_buffer()
1183 void *internal_buffer;
1185 #define FF_LAMBDA_SHIFT 7
1186 #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
1187 #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
1188 #define FF_LAMBDA_MAX (256*128-1)
1190 #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
1192 * global quality for codecs which cannot change it per frame.
1193 * this should be proportional to MPEG1/2/4 qscale.
1194 * - encoding: set by user.
1195 * - decoding: unused
1199 #define FF_CODER_TYPE_VLC 0
1200 #define FF_CODER_TYPE_AC 1
1203 * - encoding: set by user.
1204 * - decoding: unused
1210 * - encoding: set by user.
1211 * - decoding: unused
1217 * - encoding: unused
1218 * - decoding: set by user.
1221 #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
1222 #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
1223 #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
1226 * XVideo Motion Acceleration
1227 * - encoding: forbidden
1228 * - decoding: set by decoder
1230 int xvmc_acceleration;
1233 * macroblock decision mode
1234 * - encoding: set by user.
1235 * - decoding: unused
1238 #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
1239 #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
1240 #define FF_MB_DECISION_RD 2 ///< rate distoration
1243 * custom intra quantization matrix
1244 * - encoding: set by user, can be NULL
1245 * - decoding: set by lavc
1247 uint16_t *intra_matrix;
1250 * custom inter quantization matrix
1251 * - encoding: set by user, can be NULL
1252 * - decoding: set by lavc
1254 uint16_t *inter_matrix;
1257 * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
1258 * this is used to workaround some encoder bugs
1259 * - encoding: unused
1260 * - decoding: set by user, will be converted to upper case by lavc during init
1262 unsigned int stream_codec_tag;
1265 * scene change detection threshold.
1266 * 0 is default, larger means fewer detected scene changes
1267 * - encoding: set by user.
1268 * - decoding: unused
1270 int scenechange_threshold;
1273 * minimum lagrange multipler
1274 * - encoding: set by user.
1275 * - decoding: unused
1280 * maximum lagrange multipler
1281 * - encoding: set by user.
1282 * - decoding: unused
1291 typedef struct AVOption {
1292 /** options' name */
1293 const char *name; /* if name is NULL, it indicates a link to next */
1294 /** short English text help or const struct AVOption* subpointer */
1295 const char *help; // const struct AVOption* sub;
1296 /** offset to context structure where the parsed value should be stored */
1298 /** options' type */
1300 #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
1301 #define FF_OPT_TYPE_DOUBLE 2 ///< double
1302 #define FF_OPT_TYPE_INT 3 ///< integer
1303 #define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
1304 #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
1305 //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1306 #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1307 #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1308 /** min value (min == max -> no limits) */
1310 /** maximum value for double/int */
1312 /** default boo [0,1]l/double/int value */
1315 * default string value (with optional semicolon delimited extra option-list
1316 * i.e. option1;option2;option3
1317 * defval might select other then first argument as default
1320 #define FF_OPT_MAX_DEPTH 10
1324 * Parse option(s) and sets fields in passed structure
1325 * @param strct structure where the parsed results will be written
1326 * @param list list with AVOptions
1327 * @param opts string with options for parsing
1329 int avoption_parse(void* strct, const AVOption* list, const char* opts);
1335 typedef struct AVCodec {
1337 enum CodecType type;
1340 int (*init)(AVCodecContext *);
1341 int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1342 int (*close)(AVCodecContext *);
1343 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1344 uint8_t *buf, int buf_size);
1346 const AVOption *options;
1347 struct AVCodec *next;
1348 void (*flush)(AVCodecContext *);
1352 * four components are given, that's all.
1353 * the last component is alpha
1355 typedef struct AVPicture {
1357 int linesize[4]; ///< number of bytes per line
1362 * This structure defines a method for communicating palette changes
1363 * between and demuxer and a decoder.
1365 typedef struct AVPaletteControl {
1367 /* demuxer sets this to 1 to indicate the palette has changed;
1368 * decoder resets to 0 */
1369 int palette_changed;
1371 /* 256 3-byte RGB palette entries; the components should be
1372 * formatted in the buffer as "RGBRGB..." and should be scaled to
1373 * 8 bits if they originally represented 6-bit VGA palette
1375 unsigned char palette[256 * 3];
1379 extern AVCodec ac3_encoder;
1380 extern AVCodec mp2_encoder;
1381 extern AVCodec mp3lame_encoder;
1382 extern AVCodec oggvorbis_encoder;
1383 extern AVCodec faac_encoder;
1384 extern AVCodec mpeg1video_encoder;
1385 extern AVCodec mpeg2video_encoder;
1386 extern AVCodec h263_encoder;
1387 extern AVCodec h263p_encoder;
1388 extern AVCodec flv_encoder;
1389 extern AVCodec rv10_encoder;
1390 extern AVCodec mjpeg_encoder;
1391 extern AVCodec ljpeg_encoder;
1392 extern AVCodec mpeg4_encoder;
1393 extern AVCodec msmpeg4v1_encoder;
1394 extern AVCodec msmpeg4v2_encoder;
1395 extern AVCodec msmpeg4v3_encoder;
1396 extern AVCodec wmv1_encoder;
1397 extern AVCodec wmv2_encoder;
1398 extern AVCodec huffyuv_encoder;
1399 extern AVCodec h264_encoder;
1400 extern AVCodec asv1_encoder;
1401 extern AVCodec asv2_encoder;
1402 extern AVCodec vcr1_encoder;
1403 extern AVCodec ffv1_encoder;
1404 extern AVCodec mdec_encoder;
1406 extern AVCodec h263_decoder;
1407 extern AVCodec mpeg4_decoder;
1408 extern AVCodec msmpeg4v1_decoder;
1409 extern AVCodec msmpeg4v2_decoder;
1410 extern AVCodec msmpeg4v3_decoder;
1411 extern AVCodec wmv1_decoder;
1412 extern AVCodec wmv2_decoder;
1413 extern AVCodec mpeg1video_decoder;
1414 extern AVCodec mpeg2video_decoder;
1415 extern AVCodec mpeg_xvmc_decoder;
1416 extern AVCodec h263i_decoder;
1417 extern AVCodec flv_decoder;
1418 extern AVCodec rv10_decoder;
1419 extern AVCodec svq1_decoder;
1420 extern AVCodec svq3_decoder;
1421 extern AVCodec dvvideo_decoder;
1422 extern AVCodec wmav1_decoder;
1423 extern AVCodec wmav2_decoder;
1424 extern AVCodec mjpeg_decoder;
1425 extern AVCodec mjpegb_decoder;
1426 extern AVCodec mp2_decoder;
1427 extern AVCodec mp3_decoder;
1428 extern AVCodec mace3_decoder;
1429 extern AVCodec mace6_decoder;
1430 extern AVCodec huffyuv_decoder;
1431 extern AVCodec oggvorbis_decoder;
1432 extern AVCodec cyuv_decoder;
1433 extern AVCodec h264_decoder;
1434 extern AVCodec indeo3_decoder;
1435 extern AVCodec vp3_decoder;
1436 extern AVCodec amr_nb_decoder;
1437 extern AVCodec amr_nb_encoder;
1438 extern AVCodec amr_wb_encoder;
1439 extern AVCodec amr_wb_decoder;
1440 extern AVCodec aac_decoder;
1441 extern AVCodec mpeg4aac_decoder;
1442 extern AVCodec asv1_decoder;
1443 extern AVCodec asv2_decoder;
1444 extern AVCodec vcr1_decoder;
1445 extern AVCodec cljr_decoder;
1446 extern AVCodec ffv1_decoder;
1447 extern AVCodec fourxm_decoder;
1448 extern AVCodec mdec_decoder;
1449 extern AVCodec roq_decoder;
1450 extern AVCodec interplay_video_decoder;
1451 extern AVCodec xan_wc3_decoder;
1452 extern AVCodec rpza_decoder;
1453 extern AVCodec cinepak_decoder;
1454 extern AVCodec msrle_decoder;
1455 extern AVCodec msvideo1_decoder;
1456 extern AVCodec vqa_decoder;
1457 extern AVCodec idcin_decoder;
1458 extern AVCodec ra_144_decoder;
1459 extern AVCodec ra_288_decoder;
1460 extern AVCodec roq_dpcm_decoder;
1461 extern AVCodec interplay_dpcm_decoder;
1462 extern AVCodec xan_dpcm_decoder;
1465 #define PCM_CODEC(id, name) \
1466 extern AVCodec name ## _decoder; \
1467 extern AVCodec name ## _encoder
1469 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1470 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1471 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1472 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1473 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1474 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1475 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1476 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1480 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1481 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1482 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1483 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1484 PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1485 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1486 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1490 /* dummy raw video codec */
1491 extern AVCodec rawvideo_encoder;
1492 extern AVCodec rawvideo_decoder;
1494 /* the following codecs use external GPL libs */
1495 extern AVCodec ac3_decoder;
1499 struct ReSampleContext;
1501 typedef struct ReSampleContext ReSampleContext;
1503 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
1504 int output_rate, int input_rate);
1505 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1506 void audio_resample_close(ReSampleContext *s);
1508 /* YUV420 format is assumed ! */
1510 struct ImgReSampleContext;
1512 typedef struct ImgReSampleContext ImgReSampleContext;
1514 ImgReSampleContext *img_resample_init(int output_width, int output_height,
1515 int input_width, int input_height);
1517 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1518 int iwidth, int iheight,
1519 int topBand, int bottomBand,
1520 int leftBand, int rightBand);
1522 void img_resample(ImgReSampleContext *s,
1523 AVPicture *output, const AVPicture *input);
1525 void img_resample_close(ImgReSampleContext *s);
1527 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1528 int pix_fmt, int width, int height);
1529 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
1530 unsigned char *dest, int dest_size);
1531 int avpicture_get_size(int pix_fmt, int width, int height);
1532 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1533 const char *avcodec_get_pix_fmt_name(int pix_fmt);
1534 enum PixelFormat avcodec_get_pix_fmt(const char* name);
1536 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
1537 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
1538 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
1539 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
1540 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
1541 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
1543 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
1545 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
1546 int has_alpha, int *loss_ptr);
1548 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
1549 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
1550 int img_get_alpha_info(const AVPicture *src,
1551 int pix_fmt, int width, int height);
1553 /* convert among pixel formats */
1554 int img_convert(AVPicture *dst, int dst_pix_fmt,
1555 const AVPicture *src, int pix_fmt,
1556 int width, int height);
1558 /* deinterlace a picture */
1559 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1560 int pix_fmt, int width, int height);
1562 /* external high level API */
1564 extern AVCodec *first_avcodec;
1566 /* returns LIBAVCODEC_VERSION_INT constant */
1567 unsigned avcodec_version(void);
1568 /* returns LIBAVCODEC_BUILD constant */
1569 unsigned avcodec_build(void);
1570 void avcodec_init(void);
1572 void register_avcodec(AVCodec *format);
1573 AVCodec *avcodec_find_encoder(enum CodecID id);
1574 AVCodec *avcodec_find_encoder_by_name(const char *name);
1575 AVCodec *avcodec_find_decoder(enum CodecID id);
1576 AVCodec *avcodec_find_decoder_by_name(const char *name);
1577 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1579 void avcodec_get_context_defaults(AVCodecContext *s);
1580 AVCodecContext *avcodec_alloc_context(void);
1581 AVFrame *avcodec_alloc_frame(void);
1583 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1584 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1585 void avcodec_default_free_buffers(AVCodecContext *s);
1588 * opens / inits the AVCodecContext.
1591 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1593 int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
1594 int *frame_size_ptr,
1595 uint8_t *buf, int buf_size);
1596 int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
1597 int *got_picture_ptr,
1598 uint8_t *buf, int buf_size);
1599 int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
1601 uint8_t *buf, int buf_size);
1602 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1603 const short *samples);
1604 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1605 const AVFrame *pict);
1607 int avcodec_close(AVCodecContext *avctx);
1609 void avcodec_register_all(void);
1611 void avcodec_flush_buffers(AVCodecContext *avctx);
1613 /* misc usefull functions */
1616 * returns a single letter to describe the picture type
1618 char av_get_pict_type_char(int pict_type);
1621 * reduce a fraction.
1622 * this is usefull for framerate calculations
1623 * @param max the maximum allowed for dst_nom & dst_den
1624 * @return 1 if exact, 0 otherwise
1626 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
1629 * rescale a 64bit integer.
1630 * a simple a*b/c isnt possible as it can overflow
1632 int64_t av_rescale(int64_t a, int b, int c);
1636 * Interface for 0.5.0 version
1638 * do not even think about it's usage for this moment
1642 /// compressed size used from given memory buffer
1644 /// I/P/B frame type
1650 * order can't be changed - once it was defined
1654 AVC_OPEN_BY_NAME = 0xACA000,
1655 AVC_OPEN_BY_CODEC_ID,
1660 // pin - struct { uint8_t* src, uint_t src_size }
1661 // pout - struct { AVPicture* img, consumed_bytes,
1663 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1664 // pout - uint_t used_from_dest_size
1667 // query/get video commands
1668 AVC_GET_VERSION = 0xACB000,
1672 AVC_GET_QUANT_TABLE,
1675 // query/get audio commands
1676 AVC_GET_FRAME_SIZE = 0xABC000,
1678 // maybe define some simple structure which
1679 // might be passed to the user - but they can't
1680 // contain any codec specific parts and these
1681 // calls are usualy necessary only few times
1683 // set video commands
1684 AVC_SET_WIDTH = 0xACD000,
1687 // set video encoding commands
1688 AVC_SET_FRAME_RATE = 0xACD800,
1692 // set audio commands
1693 AVC_SET_SAMPLE_RATE = 0xACE000,
1699 * \param handle allocated private structure by libavcodec
1700 * for initialization pass NULL - will be returned pout
1701 * user is supposed to know nothing about its structure
1702 * \param cmd type of operation to be performed
1703 * \param pint input parameter
1704 * \param pout output parameter
1706 * \returns command status - eventually for query command it might return
1707 * integer resulting value
1709 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1712 void *av_malloc(unsigned int size);
1713 void *av_mallocz(unsigned int size);
1714 void *av_realloc(void *ptr, unsigned int size);
1715 void av_free(void *ptr);
1716 char *av_strdup(const char *s);
1717 void __av_freep(void **ptr);
1718 #define av_freep(p) __av_freep((void **)(p))
1719 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1720 /* for static data only */
1721 /* call av_free_static to release all staticaly allocated tables */
1722 void av_free_static(void);
1723 void *__av_mallocz_static(void** location, unsigned int size);
1724 #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1730 #endif /* AVCODEC_H */