6 #define LIBAVCODEC_VERSION_INT 0x000406
7 #define LIBAVCODEC_VERSION "0.4.6"
8 #define LIBAVCODEC_BUILD 4625
9 #define LIBAVCODEC_BUILD_STR "4625"
32 /* various pcm "codecs" */
42 /* various adpcm codecs */
43 CODEC_ID_ADPCM_IMA_QT,
44 CODEC_ID_ADPCM_IMA_WAV,
47 #define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
50 CODEC_TYPE_UNKNOWN = -1,
68 /* currently unused, may be used if 24/32 bits samples ever supported */
70 SAMPLE_FMT_S16 = 0, /* signed 16 bits */
74 #define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
76 /* motion estimation type, EPZS by default */
86 typedef struct RcOverride{
89 int qscale; // if this is 0 then quality_factor will be used instead
93 /* only for ME compatiblity with old apps */
94 extern int motion_estimation_method;
96 /* ME algos sorted by quality */
97 static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
98 ME_X1, ME_EPZS, ME_FULL };
101 #define FF_MAX_B_FRAMES 4
104 these flags can be passed in AVCodecContext.flags before initing
105 Note: note not everything is supported yet
108 #define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
109 #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
110 #define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
111 #define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
112 #define CODEC_FLAG_GMC 0x0020 /* use GMC */
113 #define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
114 #define CODEC_FLAG_PART 0x0080 /* use data partitioning */
115 /* parent program gurantees that the input for b-frame containing streams is not written to
116 for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
117 #define CODEC_FLAG_INPUT_PRESERVED 0x0100
118 #define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
119 #define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
120 #define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
121 #define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
122 #define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
123 #define CODEC_FLAG_DR1 0x8000 /* direct renderig type 1 (store internal frames in external buffers) */
124 #define CODEC_FLAG_NOT_TRUNCATED 0x00010000 /* input bitstream is not truncated, except before a startcode
125 allows the last part of a frame to be decoded earlier */
126 #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
128 /* codec capabilities */
130 #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
131 #define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
132 /* if 'parse_only' field is true, then avcodec_parse_frame() can be
134 #define CODEC_CAP_PARSE_ONLY 0x0004
136 #define FRAME_RATE_BASE 10000
138 typedef struct AVCodecContext {
140 * the average bitrate
141 * encoding: set by user. unused for constant quantizer encoding
142 * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
147 * number of bits the bitstream is allowed to diverge from the reference
148 * the reference can be CBR (for CBR pass1) or VBR (for pass2)
149 * encoding: set by user. unused for constant quantizer encoding
152 int bit_rate_tolerance;
156 * encoding: set by user.
157 * decoding: set by user.
162 * some codecs needs additionnal format info. It is stored here
163 * encoding: set by user.
164 * decoding: set by lavc. (FIXME is this ok?)
169 * motion estimation algorithm used for video coding
170 * encoding: set by user.
176 * some codecs need / can use extra-data like huffman tables
177 * mjpeg: huffman tables
178 * rv10: additional flags
179 * encoding: set/allocated/freed by lavc.
180 * decoding: set/allocated/freed by user.
187 * frames per sec multiplied by FRAME_RATE_BASE
188 * for variable fps this is the precission, so if the timestamps
189 * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
190 * encoding: set by user
191 * decoding: set by lavc. 0 or the frame_rate if available
196 * encoding: set by user.
197 * decoding: set by user, some codecs might override / change it during playback
202 * encoding: set by user. 0 if not known
203 * decoding: set by lavc. 0 if not known
205 int aspect_ratio_info;
206 #define FF_ASPECT_SQUARE 1
207 #define FF_ASPECT_4_3_625 2
208 #define FF_ASPECT_4_3_525 3
209 #define FF_ASPECT_16_9_625 4
210 #define FF_ASPECT_16_9_525 5
211 #define FF_ASPECT_EXTENDED 15
214 * the number of pictures in a group of pitures, or 0 for intra_only
215 * encoding: set by user.
221 * pixel format, see PIX_FMT_xxx
223 * decoding: set by lavc.
225 enum PixelFormat pix_fmt;
227 int repeat_pict; /* when decoding, this signal how much the picture */
228 /* must be delayed. */
229 /* extra_delay = (repeat_pict / 2) * (1/fps) */
232 * if non NULL, 'draw_horiz_band' is called by the libavcodec
233 * decoder to draw an horizontal band. It improve cache usage. Not
234 * all codecs can do that. You must check the codec capabilities
237 * decoding: set by user.
239 void (*draw_horiz_band)(struct AVCodecContext *s,
240 UINT8 **src_ptr, int linesize,
241 int y, int width, int height);
244 int sample_rate; /* samples per sec */
246 int sample_fmt; /* sample format, currenly unused */
248 /* the following data should not be initialized */
249 int frame_size; /* in samples, initialized when calling 'init' */
250 int frame_number; /* audio or video frame number */
251 int real_pict_num; /* returns the real picture number of
252 previous encoded frame */
255 * 1 -> keyframe, 0-> not
256 * encoding: set by lavc (for the outputed bitstream, not the input frame)
257 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
262 * picture type of the previous en/decoded frame, see ?_TYPE below
263 * encoding: set by lavc (for the outputed bitstream, not the input frame)
264 * decoding: set by lavc (for the decoded bitstream, not the displayed frame)
267 /* FIXME: these should have FF_ */
268 #define I_TYPE 1 // Intra
269 #define P_TYPE 2 // Predicted
270 #define B_TYPE 3 // Bi-dir predicted
271 #define S_TYPE 4 // S(GMC)-VOP MPEG4
274 * number of frames the decoded output will be delayed relative to
276 * encoding: set by lavc.
282 * mbskip_table[mb]=1 if MB didnt change, is only valid for I/P frames
283 * stride= mb_width = (width+15)>>4 (FIXME export stride?)
285 * decoding: set by lavc
287 uint8_t *mbskip_table;
289 /* encoding parameters */
291 * quality (between 1 (good) and 31 (bad))
292 * encoding: set by user if CODEC_FLAG_QSCALE is set otherwise set by lavc
293 * decoding: set by lavc
295 int quality; /* quality of the previous encoded frame
297 this is allso used to set the quality in vbr mode
298 and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
299 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
300 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
304 * encoding: set by user.
311 * encoding: set by user.
317 * maximum quantizer difference etween frames
318 * encoding: set by user.
324 * maximum number of b frames between non b frames
325 * note: the output will be delayed by max_b_frames+1 relative to the input
326 * encoding: set by user.
332 * qscale factor between ip and b frames
333 * encoding: set by user.
336 float b_quant_factor;
338 /** obsolete FIXME remove */
340 int b_frame_strategy;
344 * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too
348 struct AVCodec *codec;
352 /* The following data is for RTP friendly coding */
353 /* By now only H.263/H.263+/MPEG4 coder honours this */
354 int rtp_mode; /* 1 for activate RTP friendly-mode */
355 /* highers numbers represent more error-prone */
356 /* enviroments, by now just "1" exist */
358 int rtp_payload_size; /* The size of the RTP payload, the coder will */
359 /* do it's best to deliver a chunk with size */
360 /* below rtp_payload_size, the chunk will start */
361 /* with a start code on some codecs like H.263 */
362 /* This doesn't take account of any particular */
363 /* headers inside the transmited RTP payload */
366 /* The RTP callcack: This function is called */
367 /* every time the encoder as a packet to send */
368 /* Depends on the encoder if the data starts */
369 /* with a Start Code (it should) H.263 does */
370 void (*rtp_callback)(void *data, int size, int packet_number);
373 * if you set get_psnr to 1 then after encoding you will have the
374 * PSNR on psnr_y/cb/cr
375 * encoding: set by user (1-> on, 0-> off)
383 /* statistics, used for 2-pass encoding */
394 * number of bits used for the previously encoded frame
395 * encoding: set by lavc
401 * private data of the user, can be used to carry app specific stuff
402 * encoding: set by user
403 * decoding: set by user
408 enum CodecType codec_type; /* see CODEC_TYPE_xxx */
409 enum CodecID codec_id; /* see CODEC_ID_xxx */
410 unsigned int codec_tag; /* codec tag, only used if unknown codec */
413 * workaround bugs in encoders which cannot be detected automatically
415 * decoding: set by user
420 * encoding: set by user
423 int luma_elim_threshold;
426 * encoding: set by user
429 int chroma_elim_threshold;
432 * strictly follow the std (MPEG4, ...)
433 * encoding: set by user
436 int strict_std_compliance;
439 * qscale offset between ip and b frames
440 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
441 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
442 * encoding: set by user.
445 float b_quant_offset;
448 * error resilience {-1,0,1} higher values will detect more errors but may missdetect
449 * some more or less valid parts as errors
451 * decoding: set by user
453 int error_resilience;
459 #define QP_TYPE int //FIXME note xxx this might be changed to int8_t
461 QP_TYPE *quant_store; /* field for communicating with external postprocessing */
466 * buffer, where the next picture should be decoded into
468 * decoding: set by user in get_buffer_callback to a buffer into which the next part
469 * of the bitstream will be decoded, and set by lavc at end of frame to the
470 * next frame which needs to be displayed
472 uint8_t *dr_buffer[3];
475 * stride of the luminance part of the dr buffer
477 * decoding: set by user
482 * same behavior as dr_buffer, just for some private data of the user
484 * decoding: set by user in get_buffer_callback, and set by lavc at end of frame
486 void *dr_opaque_frame;
489 * called at the beginning of each frame to get a buffer for it
491 * decoding: set by user
493 void (*get_buffer_callback)(struct AVCodecContext *c, int width, int height, int pict_type);
496 * is 1 if the decoded stream contains b frames, 0 otherwise
498 * decoding: set by lavc
503 * stride of the chrominance part of the dr buffer
505 * decoding: set by user
510 * number of dr buffers
512 * decoding: set by user
514 int dr_ip_buffer_count;
516 int block_align; /* currently only for adpcm codec in wav/avi */
518 int parse_only; /* decoding only: if true, only parsing is done
519 (function avcodec_parse_frame()). The frame
520 data is returned. Only MPEG codecs support this now. */
523 * 0-> h263 quant 1-> mpeg quant
524 * encoding: set by user.
530 * pass1 encoding statistics output buffer
531 * encoding: set by lavc
534 char *stats_out; /* encoding statistics output buffer */
537 * pass2 encoding statistics input buffer.
538 * concatenated stuff from stats_out of pass1 should be placed here
539 * encoding: allocated/set/freed by user
545 * ratecontrol qmin qmax limiting method
546 * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
547 * encoding: set by user.
556 * ratecontrol override, see RcOverride
557 * encoding: allocated/set/freed by user.
560 RcOverride *rc_override;
561 int rc_override_count;
564 * rate control equation
565 * encoding: set by user
572 * encoding: set by user.
579 * encoding: set by user.
585 * decoder bitstream buffer size
586 * encoding: set by user.
590 float rc_buffer_aggressivity;
593 * qscale factor between p and i frames
594 * encoding: set by user.
597 float i_quant_factor;
600 * qscale offset between p and i frames
601 * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
602 * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
603 * encoding: set by user.
606 float i_quant_offset;
609 * initial complexity for pass1 ratecontrol
610 * encoding: set by user.
613 float rc_initial_cplx;
616 * custom aspect ratio, used if aspect_info==FF_ASPECT_EXTENDED
617 * encoding: set by user.
618 * decoding: set by lavc.
624 * dct algorithm, see FF_DCT_* below
625 * encoding: set by user
629 #define FF_DCT_AUTO 0
630 #define FF_DCT_FASTINT 1
633 #define FF_DCT_MLIB 4
636 * presentation timestamp in micro seconds (time when frame should be shown to user)
637 * if 0 then the frame_rate will be used as reference
638 * encoding: set by user
639 * decoding; set by lavc
644 * luminance masking (0-> disabled)
645 * encoding: set by user
651 * temporary complexity masking (0-> disabled)
652 * encoding: set by user
655 float temporal_cplx_masking;
658 * spatial complexity masking (0-> disabled)
659 * encoding: set by user
662 float spatial_cplx_masking;
665 * p block masking (0-> disabled)
666 * encoding: set by user
671 //FIXME this should be reordered after kabis API is finished ...
674 Note: Below are located reserved fields for further usage
675 It requires for ABI !!!
676 If you'll perform some changes then borrow new space from these fields
677 (void * can be safety replaced with struct * ;)
679 Note: use avcodec_alloc_context instead of malloc to allocate this,
680 otherwise the ABI compatibility will be broken between versions
681 IMPORTANT: Never change order of already declared fields!!!
683 //TODO: remove mess below
684 unsigned long long int
685 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
686 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11;
688 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
689 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
691 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
692 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
694 ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
695 ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
697 us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
698 us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
700 uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
701 uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
703 ui_res0,ui_res1,ui_res2,ui_res3,ui_res4,ui_res5,ui_res6,ui_res7,ui_res8,ui_res9,
704 ui_res10,ui_res11,ui_res12,ui_res13,ui_res14,ui_res15,ui_res16;
707 typedef struct AVCodec {
712 int (*init)(AVCodecContext *);
713 int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
714 int (*close)(AVCodecContext *);
715 int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
716 UINT8 *buf, int buf_size);
718 struct AVCodec *next;
720 Note: Below are located reserved fields for further usage
721 It requires for ABI !!!
722 If you'll perform some changes then borrow new space from these fields
723 (void * can be safety replaced with struct * ;)
725 IMPORTANT: Never change order of already declared fields!!!
727 unsigned long long int
728 ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
729 ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
731 flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
732 flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
734 *ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
735 *ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
738 /* three components are given, that's all */
739 typedef struct AVPicture {
744 extern AVCodec ac3_encoder;
745 extern AVCodec mp2_encoder;
746 extern AVCodec mp3lame_encoder;
747 extern AVCodec oggvorbis_encoder;
748 extern AVCodec mpeg1video_encoder;
749 extern AVCodec h263_encoder;
750 extern AVCodec h263p_encoder;
751 extern AVCodec rv10_encoder;
752 extern AVCodec mjpeg_encoder;
753 extern AVCodec mpeg4_encoder;
754 extern AVCodec msmpeg4v1_encoder;
755 extern AVCodec msmpeg4v2_encoder;
756 extern AVCodec msmpeg4v3_encoder;
757 extern AVCodec wmv1_encoder;
758 extern AVCodec wmv2_encoder;
760 extern AVCodec h263_decoder;
761 extern AVCodec mpeg4_decoder;
762 extern AVCodec msmpeg4v1_decoder;
763 extern AVCodec msmpeg4v2_decoder;
764 extern AVCodec msmpeg4v3_decoder;
765 extern AVCodec wmv1_decoder;
766 extern AVCodec wmv2_decoder;
767 extern AVCodec mpeg_decoder;
768 extern AVCodec h263i_decoder;
769 extern AVCodec rv10_decoder;
770 extern AVCodec svq1_decoder;
771 extern AVCodec mjpeg_decoder;
772 extern AVCodec mp2_decoder;
773 extern AVCodec mp3_decoder;
776 #define PCM_CODEC(id, name) \
777 extern AVCodec name ## _decoder; \
778 extern AVCodec name ## _encoder;
780 PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
781 PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
782 PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
783 PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
784 PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
785 PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
786 PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
787 PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
791 PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
792 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
793 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
797 /* dummy raw video codec */
798 extern AVCodec rawvideo_codec;
800 /* the following codecs use external GPL libs */
801 extern AVCodec ac3_decoder;
805 struct ReSampleContext;
807 typedef struct ReSampleContext ReSampleContext;
809 ReSampleContext *audio_resample_init(int output_channels, int input_channels,
810 int output_rate, int input_rate);
811 int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
812 void audio_resample_close(ReSampleContext *s);
814 /* YUV420 format is assumed ! */
816 struct ImgReSampleContext;
818 typedef struct ImgReSampleContext ImgReSampleContext;
820 ImgReSampleContext *img_resample_init(int output_width, int output_height,
821 int input_width, int input_height);
823 ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
824 int iwidth, int iheight,
825 int topBand, int bottomBand,
826 int leftBand, int rightBand);
828 void img_resample(ImgReSampleContext *s,
829 AVPicture *output, AVPicture *input);
831 void img_resample_close(ImgReSampleContext *s);
833 void avpicture_fill(AVPicture *picture, UINT8 *ptr,
834 int pix_fmt, int width, int height);
835 int avpicture_get_size(int pix_fmt, int width, int height);
837 /* convert among pixel formats */
838 int img_convert(AVPicture *dst, int dst_pix_fmt,
839 AVPicture *src, int pix_fmt,
840 int width, int height);
842 /* deinterlace a picture */
843 int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
844 int pix_fmt, int width, int height);
846 /* external high level API */
848 extern AVCodec *first_avcodec;
850 /* returns LIBAVCODEC_VERSION_INT constant */
851 unsigned avcodec_version(void);
852 /* returns LIBAVCODEC_BUILD constant */
853 unsigned avcodec_build(void);
854 void avcodec_init(void);
856 void avcodec_set_bit_exact(void);
858 void register_avcodec(AVCodec *format);
859 AVCodec *avcodec_find_encoder(enum CodecID id);
860 AVCodec *avcodec_find_encoder_by_name(const char *name);
861 AVCodec *avcodec_find_decoder(enum CodecID id);
862 AVCodec *avcodec_find_decoder_by_name(const char *name);
863 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
865 AVCodecContext *avcodec_alloc_context();
866 int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
867 int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
869 UINT8 *buf, int buf_size);
870 int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
871 int *got_picture_ptr,
872 UINT8 *buf, int buf_size);
873 int avcodec_parse_frame(AVCodecContext *avctx, UINT8 **pdata,
875 UINT8 *buf, int buf_size);
876 int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
877 const short *samples);
878 int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
879 const AVPicture *pict);
881 int avcodec_close(AVCodecContext *avctx);
883 void avcodec_register_all(void);
885 void avcodec_flush_buffers(AVCodecContext *avctx);
887 #ifdef FF_POSTPROCESS
888 extern int quant_store[MBR+1][MBC+1]; // [Review]
893 * Interface for 0.5.0 version
895 * do not even think about it's usage for this moment
899 // compressed size used from given memory buffer
907 * order can't be changed - once it was defined
911 AVC_OPEN_BY_NAME = 0xACA000,
912 AVC_OPEN_BY_CODEC_ID,
917 // pin - struct { uint8_t* src, uint_t src_size }
918 // pout - struct { AVPicture* img, consumed_bytes,
920 // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
921 // pout - uint_t used_from_dest_size
924 // query/get video commands
925 AVC_GET_VERSION = 0xACB000,
932 // query/get audio commands
933 AVC_GET_FRAME_SIZE = 0xABC000,
935 // maybe define some simple structure which
936 // might be passed to the user - but they can't
937 // contain any codec specific parts and these
938 // calls are usualy necessary only few times
940 // set video commands
941 AVC_SET_WIDTH = 0xACD000,
944 // set video encoding commands
945 AVC_SET_FRAME_RATE = 0xACD800,
949 // set audio commands
950 AVC_SET_SAMPLE_RATE = 0xACE000,
956 * \param handle allocated private structure by libavcodec
957 * for initialization pass NULL - will be returned pout
958 * user is supposed to know nothing about its structure
959 * \param cmd type of operation to be performed
960 * \param pint input parameter
961 * \param pout output parameter
963 * \returns command status - eventually for query command it might return
964 * integer resulting value
966 int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
969 void *av_malloc(int size);
970 void *av_mallocz(int size);
971 void av_free(void *ptr);
972 void __av_freep(void **ptr);
973 #define av_freep(p) __av_freep((void **)(p))
975 #endif /* AVCODEC_H */