avcodec.h
上传用户:luocongwen
上传日期:2007-11-25
资源大小:1022k
文件大小:77k
- #ifndef AVCODEC_H
- #define AVCODEC_H
- /**
- * @file avcodec.h
- * external api header.
- */
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include "avutil.h"
- #include <sys/types.h> /* size_t */
- //FIXME the following 2 really dont belong in here
- #define FFMPEG_VERSION_INT 0x000409
- #define FFMPEG_VERSION "CVS"
- #define AV_STRINGIFY(s) AV_TOSTRING(s)
- #define AV_TOSTRING(s) #s
- #define LIBAVCODEC_VERSION_INT ((51<<16)+(9<<8)+0)
- #define LIBAVCODEC_VERSION 51.9.0
- #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
- #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
- #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
- #define AV_TIME_BASE 1000000
- #define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
- enum CodecID {
- CODEC_ID_NONE,
- CODEC_ID_MPEG1VIDEO,
- CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
- CODEC_ID_MPEG2VIDEO_XVMC,
- CODEC_ID_H261,
- CODEC_ID_H263,
- CODEC_ID_RV10,
- CODEC_ID_RV20,
- CODEC_ID_MJPEG,
- CODEC_ID_MJPEGB,
- CODEC_ID_LJPEG,
- CODEC_ID_SP5X,
- CODEC_ID_JPEGLS,
- CODEC_ID_MPEG4,
- CODEC_ID_RAWVIDEO,
- CODEC_ID_MSMPEG4V1,
- CODEC_ID_MSMPEG4V2,
- CODEC_ID_MSMPEG4V3,
- CODEC_ID_WMV1,
- CODEC_ID_WMV2,
- CODEC_ID_H263P,
- CODEC_ID_H263I,
- CODEC_ID_FLV1,
- CODEC_ID_SVQ1,
- CODEC_ID_SVQ3,
- CODEC_ID_DVVIDEO,
- CODEC_ID_HUFFYUV,
- CODEC_ID_CYUV,
- CODEC_ID_H264,
- CODEC_ID_INDEO3,
- CODEC_ID_VP3,
- CODEC_ID_THEORA,
- CODEC_ID_ASV1,
- CODEC_ID_ASV2,
- CODEC_ID_FFV1,
- CODEC_ID_4XM,
- CODEC_ID_VCR1,
- CODEC_ID_CLJR,
- CODEC_ID_MDEC,
- CODEC_ID_ROQ,
- CODEC_ID_INTERPLAY_VIDEO,
- CODEC_ID_XAN_WC3,
- CODEC_ID_XAN_WC4,
- CODEC_ID_RPZA,
- CODEC_ID_CINEPAK,
- CODEC_ID_WS_VQA,
- CODEC_ID_MSRLE,
- CODEC_ID_MSVIDEO1,
- CODEC_ID_IDCIN,
- CODEC_ID_8BPS,
- CODEC_ID_SMC,
- CODEC_ID_FLIC,
- CODEC_ID_TRUEMOTION1,
- CODEC_ID_VMDVIDEO,
- CODEC_ID_MSZH,
- CODEC_ID_ZLIB,
- CODEC_ID_QTRLE,
- CODEC_ID_SNOW,
- CODEC_ID_TSCC,
- CODEC_ID_ULTI,
- CODEC_ID_QDRAW,
- CODEC_ID_VIXL,
- CODEC_ID_QPEG,
- CODEC_ID_XVID,
- CODEC_ID_PNG,
- CODEC_ID_PPM,
- CODEC_ID_PBM,
- CODEC_ID_PGM,
- CODEC_ID_PGMYUV,
- CODEC_ID_PAM,
- CODEC_ID_FFVHUFF,
- CODEC_ID_RV30,
- CODEC_ID_RV40,
- CODEC_ID_VC9,
- CODEC_ID_WMV3,
- CODEC_ID_LOCO,
- CODEC_ID_WNV1,
- CODEC_ID_AASC,
- CODEC_ID_INDEO2,
- CODEC_ID_FRAPS,
- CODEC_ID_TRUEMOTION2,
- CODEC_ID_BMP,
- CODEC_ID_CSCD,
- CODEC_ID_MMVIDEO,
- CODEC_ID_ZMBV,
- CODEC_ID_AVS,
- CODEC_ID_SMACKVIDEO,
- CODEC_ID_NUV,
- CODEC_ID_KMVC,
- /* various pcm "codecs" */
- CODEC_ID_PCM_S16LE= 0x10000,
- CODEC_ID_PCM_S16BE,
- CODEC_ID_PCM_U16LE,
- CODEC_ID_PCM_U16BE,
- CODEC_ID_PCM_S8,
- CODEC_ID_PCM_U8,
- CODEC_ID_PCM_MULAW,
- CODEC_ID_PCM_ALAW,
- CODEC_ID_PCM_S32LE,
- CODEC_ID_PCM_S32BE,
- CODEC_ID_PCM_U32LE,
- CODEC_ID_PCM_U32BE,
- CODEC_ID_PCM_S24LE,
- CODEC_ID_PCM_S24BE,
- CODEC_ID_PCM_U24LE,
- CODEC_ID_PCM_U24BE,
- CODEC_ID_PCM_S24DAUD,
- /* various adpcm codecs */
- CODEC_ID_ADPCM_IMA_QT= 0x11000,
- CODEC_ID_ADPCM_IMA_WAV,
- CODEC_ID_ADPCM_IMA_DK3,
- CODEC_ID_ADPCM_IMA_DK4,
- CODEC_ID_ADPCM_IMA_WS,
- CODEC_ID_ADPCM_IMA_SMJPEG,
- CODEC_ID_ADPCM_MS,
- CODEC_ID_ADPCM_4XM,
- CODEC_ID_ADPCM_XA,
- CODEC_ID_ADPCM_ADX,
- CODEC_ID_ADPCM_EA,
- CODEC_ID_ADPCM_G726,
- CODEC_ID_ADPCM_CT,
- CODEC_ID_ADPCM_SWF,
- CODEC_ID_ADPCM_YAMAHA,
- CODEC_ID_ADPCM_SBPRO_4,
- CODEC_ID_ADPCM_SBPRO_3,
- CODEC_ID_ADPCM_SBPRO_2,
- /* AMR */
- CODEC_ID_AMR_NB= 0x12000,
- CODEC_ID_AMR_WB,
- /* RealAudio codecs*/
- CODEC_ID_RA_144= 0x13000,
- CODEC_ID_RA_288,
- /* various DPCM codecs */
- CODEC_ID_ROQ_DPCM= 0x14000,
- CODEC_ID_INTERPLAY_DPCM,
- CODEC_ID_XAN_DPCM,
- CODEC_ID_SOL_DPCM,
- CODEC_ID_MP2= 0x15000,
- CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
- CODEC_ID_AAC,
- CODEC_ID_MPEG4AAC,
- CODEC_ID_AC3,
- CODEC_ID_DTS,
- CODEC_ID_VORBIS,
- CODEC_ID_DVAUDIO,
- CODEC_ID_WMAV1,
- CODEC_ID_WMAV2,
- CODEC_ID_MACE3,
- CODEC_ID_MACE6,
- CODEC_ID_VMDAUDIO,
- CODEC_ID_SONIC,
- CODEC_ID_SONIC_LS,
- CODEC_ID_FLAC,
- CODEC_ID_MP3ADU,
- CODEC_ID_MP3ON4,
- CODEC_ID_SHORTEN,
- CODEC_ID_ALAC,
- CODEC_ID_WESTWOOD_SND1,
- CODEC_ID_GSM,
- CODEC_ID_QDM2,
- CODEC_ID_COOK,
- CODEC_ID_TRUESPEECH,
- CODEC_ID_TTA,
- CODEC_ID_SMACKAUDIO,
- CODEC_ID_OGGTHEORA= 0x16000,
- /* subtitle codecs */
- CODEC_ID_DVD_SUBTITLE= 0x17000,
- CODEC_ID_DVB_SUBTITLE,
- CODEC_ID_MPEG2TS= 0x20000, /* _FAKE_ codec to indicate a raw MPEG2 transport
- stream (only used by libavformat) */
- };
- /* CODEC_ID_MP3LAME is absolete */
- #define CODEC_ID_MP3LAME CODEC_ID_MP3
- enum CodecType {
- CODEC_TYPE_UNKNOWN = -1,
- CODEC_TYPE_VIDEO,
- CODEC_TYPE_AUDIO,
- CODEC_TYPE_DATA,
- CODEC_TYPE_SUBTITLE,
- };
- /* currently unused, may be used if 24/32 bits samples ever supported */
- /* all in native endian */
- enum SampleFormat {
- SAMPLE_FMT_NONE = -1,
- SAMPLE_FMT_U8, ///< unsigned 8 bits
- SAMPLE_FMT_S16, ///< signed 16 bits
- SAMPLE_FMT_S24, ///< signed 24 bits
- SAMPLE_FMT_S32, ///< signed 32 bits
- SAMPLE_FMT_FLT, ///< float
- };
- /* in bytes */
- #define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
- /**
- * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
- * this is mainly needed because some optimized bitstream readers read
- * 32 or 64 bit at once and could read over the end<br>
- * Note, if the first 23 bits of the additional bytes are not 0 then damaged
- * MPEG bitstreams could cause overread and segfault
- */
- #define FF_INPUT_BUFFER_PADDING_SIZE 8
- /**
- * minimum encoding buffer size.
- * used to avoid some checks during header writing
- */
- #define FF_MIN_BUFFER_SIZE 16384
- /* motion estimation type, EPZS by default */
- enum Motion_Est_ID {
- ME_ZERO = 1,
- ME_FULL,
- ME_LOG,
- ME_PHODS,
- ME_EPZS,
- ME_X1,
- ME_HEX,
- ME_UMH,
- ME_ITER,
- };
- enum AVDiscard{
- //we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
- AVDISCARD_NONE =-16, ///< discard nothing
- AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
- AVDISCARD_NONREF = 8, ///< discard all non reference
- AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
- AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
- AVDISCARD_ALL = 48, ///< discard all
- };
- typedef struct RcOverride{
- int start_frame;
- int end_frame;
- int qscale; // if this is 0 then quality_factor will be used instead
- float quality_factor;
- } RcOverride;
- /* only for ME compatiblity with old apps */
- extern int motion_estimation_method;
- #define FF_MAX_B_FRAMES 16
- /* encoding support
- these flags can be passed in AVCodecContext.flags before initing
- Note: not everything is supported yet.
- */
- #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
- #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / Advanced prediction for H263
- #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
- #define CODEC_FLAG_GMC 0x0020 ///< use GMC
- #define CODEC_FLAG_MV0 0x0040 ///< always try a MB with MV=<0,0>
- #define CODEC_FLAG_PART 0x0080 ///< use data partitioning
- /* parent program gurantees that the input for b-frame containing streams is not written to
- for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
- #define CODEC_FLAG_INPUT_PRESERVED 0x0100
- #define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
- #define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
- #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
- #define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
- #define CODEC_FLAG_EMU_EDGE 0x4000///< don't draw edges
- #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
- #define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
- of only at frame boundaries */
- #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
- #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
- #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
- #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
- #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
- #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
- #define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
- /* Fx : Flag for h263+ extra options */
- #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
- #define CODEC_FLAG_AC_PRED 0x01000000 ///< H263 Advanced intra coding / MPEG4 AC prediction
- #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
- #define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
- #define CODEC_FLAG_QP_RD 0x08000000 ///< use rate distortion optimization for qp selectioon
- #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H263 Alternative inter vlc
- #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC
- #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter
- #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
- #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation
- #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
- #define CODEC_FLAG_CLOSED_GOP 0x80000000
- #define CODEC_FLAG2_FAST 0x00000001 ///< allow non spec compliant speedup tricks
- #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< strictly enforce GOP size
- #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< skip bitstream encoding
- #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< place global headers at every keyframe instead of in extradata
- #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow b-frames to be used as references
- #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for b-frames
- #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 multiple references per partition
- #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform
- #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip
- #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters
- #define CODEC_FLAG2_BRDO 0x00000400 ///< b-frame rate-distortion optimization
- /* Unsupported options :
- * Syntax Arithmetic coding (SAC)
- * Reference Picture Selection
- * Independant Segment Decoding */
- /* /Fx */
- /* codec capabilities */
- #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
- /**
- * Codec uses get_buffer() for allocating buffers.
- * direct rendering method 1
- */
- #define CODEC_CAP_DR1 0x0002
- /* if 'parse_only' field is true, then avcodec_parse_frame() can be
- used */
- #define CODEC_CAP_PARSE_ONLY 0x0004
- #define CODEC_CAP_TRUNCATED 0x0008
- /* codec can export data for HW decoding (XvMC) */
- #define CODEC_CAP_HWACCEL 0x0010
- /**
- * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
- * if this is not set, the codec is guranteed to never be feeded with NULL data
- */
- #define CODEC_CAP_DELAY 0x0020
- //the following defines may change, don't expect compatibility if you use them
- #define MB_TYPE_INTRA4x4 0x0001
- #define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
- #define MB_TYPE_INTRA_PCM 0x0004 //FIXME h264 specific
- #define MB_TYPE_16x16 0x0008
- #define MB_TYPE_16x8 0x0010
- #define MB_TYPE_8x16 0x0020
- #define MB_TYPE_8x8 0x0040
- #define MB_TYPE_INTERLACED 0x0080
- #define MB_TYPE_DIRECT2 0x0100 //FIXME
- #define MB_TYPE_ACPRED 0x0200
- #define MB_TYPE_GMC 0x0400
- #define MB_TYPE_SKIP 0x0800
- #define MB_TYPE_P0L0 0x1000
- #define MB_TYPE_P1L0 0x2000
- #define MB_TYPE_P0L1 0x4000
- #define MB_TYPE_P1L1 0x8000
- #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
- #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
- #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
- #define MB_TYPE_QUANT 0x00010000
- #define MB_TYPE_CBP 0x00020000
- //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
- /**
- * Pan Scan area.
- * this specifies the area which should be displayed. Note there may be multiple such areas for one frame
- */
- typedef struct AVPanScan{
- /**
- * id.
- * - encoding: set by user.
- * - decoding: set by lavc
- */
- int id;
- /**
- * width and height in 1/16 pel
- * - encoding: set by user.
- * - decoding: set by lavc
- */
- int width;
- int height;
- /**
- * position of the top left corner in 1/16 pel for up to 3 fields/frames.
- * - encoding: set by user.
- * - decoding: set by lavc
- */
- int16_t position[3][2];
- }AVPanScan;
- #define FF_COMMON_FRAME
- /**
- * pointer to the picture planes.
- * this might be different from the first allocated byte
- * - encoding:
- * - decoding:
- */
- uint8_t *data[4];
- int linesize[4];
- /**
- * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer
- * this isn't used by lavc unless the default get/release_buffer() is used
- * - encoding:
- * - decoding:
- */
- uint8_t *base[4];
- /**
- * 1 -> keyframe, 0-> not
- * - encoding: set by lavc
- * - decoding: set by lavc
- */
- int key_frame;
- /**
- * picture type of the frame, see ?_TYPE below.
- * - encoding: set by lavc for coded_picture (and set by user for input)
- * - decoding: set by lavc
- */
- int pict_type;
- /**
- * presentation timestamp in time_base units (time when frame should be shown to user)
- * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed
- * - encoding: MUST be set by user
- * - decoding: set by lavc
- */
- int64_t pts;
- /**
- * picture number in bitstream order.
- * - encoding: set by
- * - decoding: set by lavc
- */
- int coded_picture_number;
- /**
- * picture number in display order.
- * - encoding: set by
- * - decoding: set by lavc
- */
- int display_picture_number;
- /**
- * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
- * - encoding: set by lavc for coded_picture (and set by user for input)
- * - decoding: set by lavc
- */
- int quality;
- /**
- * buffer age (1->was last buffer and dint change, 2->..., ...).
- * set to INT_MAX if the buffer has not been used yet
- * - encoding: unused
- * - decoding: MUST be set by get_buffer()
- */
- int age;
- /**
- * is this picture used as reference
- * - encoding: unused
- * - decoding: set by lavc (before get_buffer() call))
- */
- int reference;
- /**
- * QP table
- * - encoding: unused
- * - decoding: set by lavc
- */
- int8_t *qscale_table;
- /**
- * QP store stride
- * - encoding: unused
- * - decoding: set by lavc
- */
- int qstride;
- /**
- * mbskip_table[mb]>=1 if MB didnt change
- * stride= mb_width = (width+15)>>4
- * - encoding: unused
- * - decoding: set by lavc
- */
- uint8_t *mbskip_table;
- /**
- * Motion vector table.
- * @code
- * example:
- * int mv_sample_log2= 4 - motion_subsample_log2;
- * int mb_width= (width+15)>>4;
- * int mv_stride= (mb_width << mv_sample_log2) + 1;
- * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
- * @endcode
- * - encoding: set by user
- * - decoding: set by lavc
- */
- int16_t (*motion_val[2])[2];
- /**
- * Macroblock type table
- * mb_type_base + mb_width + 2
- * - encoding: set by user
- * - decoding: set by lavc
- */
- uint32_t *mb_type;
- /**
- * log2 of the size of the block which a single vector in motion_val represents:
- * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
- * - encoding: unused
- * - decoding: set by lavc
- */
- uint8_t motion_subsample_log2;
- /**
- * for some private data of the user
- * - encoding: unused
- * - decoding: set by user
- */
- void *opaque;
- /**
- * error
- * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
- * - decoding: unused
- */
- uint64_t error[4];
- /**
- * type of the buffer (to keep track of who has to dealloc data[*])
- * - encoding: set by the one who allocs it
- * - decoding: set by the one who allocs it
- * Note: user allocated (direct rendering) & internal buffers can not coexist currently
- */
- int type;
-
- /**
- * when decoding, this signal how much the picture must be delayed.
- * extra_delay = repeat_pict / (2*fps)
- * - encoding: unused
- * - decoding: set by lavc
- */
- int repeat_pict;
-
- /**
- *
- */
- int qscale_type;
-
- /**
- * The content of the picture is interlaced.
- * - encoding: set by user
- * - decoding: set by lavc (default 0)
- */
- int interlaced_frame;
-
- /**
- * if the content is interlaced, is top field displayed first.
- * - encoding: set by user
- * - decoding: set by lavc
- */
- int top_field_first;
-
- /**
- * Pan scan.
- * - encoding: set by user
- * - decoding: set by lavc
- */
- AVPanScan *pan_scan;
-
- /**
- * tell user application that palette has changed from previous frame.
- * - encoding: ??? (no palette-enabled encoder yet)
- * - decoding: set by lavc (default 0)
- */
- int palette_has_changed;
-
- /**
- * Codec suggestion on buffer type if != 0
- * - encoding: unused
- * - decoding: set by lavc (before get_buffer() call))
- */
- int buffer_hints;
- /**
- * DCT coeffitients
- * - encoding: unused
- * - decoding: set by lavc
- */
- short *dct_coeff;
- /**
- * Motion referece frame index
- * - encoding: set by user
- * - decoding: set by lavc
- */
- int8_t *ref_index[2];
- #define FF_QSCALE_TYPE_MPEG1 0
- #define FF_QSCALE_TYPE_MPEG2 1
- #define FF_QSCALE_TYPE_H264 2
- #define FF_BUFFER_TYPE_INTERNAL 1
- #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
- #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
- #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, don't dealloc anything
- #define FF_I_TYPE 1 // Intra
- #define FF_P_TYPE 2 // Predicted
- #define FF_B_TYPE 3 // Bi-dir predicted
- #define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
- #define FF_SI_TYPE 5
- #define FF_SP_TYPE 6
- #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore)
- #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer
- #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content
- #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update)
- /**
- * Audio Video Frame.
- */
- typedef struct AVFrame {
- FF_COMMON_FRAME
- } AVFrame;
- #define DEFAULT_FRAME_RATE_BASE 1001000
- /**
- * Used by av_log
- */
- typedef struct AVCLASS AVClass;
- struct AVCLASS {
- const char* class_name;
- const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
- or AVFormatContext, which begin with an AVClass.
- Needed because av_log is in libavcodec and has no visibility
- of AVIn/OutputFormat */
- struct AVOption *option;
- };
- /**
- * main external api structure.
- */
- typedef struct AVCodecContext {
- /**
- * Info on struct for av_log
- * - set by avcodec_alloc_context
- */
- AVClass *av_class;
- /**
- * the average bitrate.
- * - encoding: set by user. unused for constant quantizer encoding
- * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
- */
- int bit_rate;
- /**
- * number of bits the bitstream is allowed to diverge from the reference.
- * the reference can be CBR (for CBR pass1) or VBR (for pass2)
- * - encoding: set by user. unused for constant quantizer encoding
- * - decoding: unused
- */
- int bit_rate_tolerance;
- /**
- * CODEC_FLAG_*.
- * - encoding: set by user.
- * - decoding: set by user.
- */
- int flags;
- /**
- * some codecs needs additionnal format info. It is stored here
- * - encoding: set by user.
- * - decoding: set by lavc. (FIXME is this ok?)
- */
- int sub_id;
- /**
- * motion estimation algorithm used for video coding.
- * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
- * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
- * - encoding: MUST be set by user.
- * - decoding: unused
- */
- int me_method;
- /**
- * some codecs need / can use extra-data like huffman tables.
- * mjpeg: huffman tables
- * rv10: additional flags
- * mpeg4: global headers (they can be in the bitstream or here)
- * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
- * then extradata_size to avoid prolems if its read with the bitstream reader
- * the bytewise contents of extradata must not depend on the architecture or cpu endianness
- * - encoding: set/allocated/freed by lavc.
- * - decoding: set/allocated/freed by user.
- */
- void *extradata;
- int extradata_size;
- /**
- * this is the fundamental unit of time (in seconds) in terms
- * of which frame timestamps are represented. for fixed-fps content,
- * timebase should be 1/framerate and timestamp increments should be
- * identically 1.
- * - encoding: MUST be set by user
- * - decoding: set by lavc.
- */
- AVRational time_base;
- /* video only */
- /**
- * picture width / height.
- * - encoding: MUST be set by user.
- * - decoding: set by lavc.
- * Note, for compatibility its possible to set this instead of
- * coded_width/height before decoding
- */
- int width, height;
- #define FF_ASPECT_EXTENDED 15
- /**
- * the number of pictures in a group of pitures, or 0 for intra_only.
- * - encoding: set by user.
- * - decoding: unused
- */
- int gop_size;
- /**
- * pixel format, see PIX_FMT_xxx.
- * - encoding: set by user.
- * - decoding: set by lavc.
- */
- enum PixelFormat pix_fmt;
- /**
- * Frame rate emulation. If not zero lower layer (i.e. format handler)
- * has to read frames at native frame rate.
- * - encoding: set by user.
- * - decoding: unused.
- */
- int rate_emu;
- /**
- * if non NULL, 'draw_horiz_band' is called by the libavcodec
- * decoder to draw an horizontal band. It improve cache usage. Not
- * all codecs can do that. You must check the codec capabilities
- * before
- * - encoding: unused
- * - decoding: set by user.
- * @param height the height of the slice
- * @param y the y position of the slice
- * @param type 1->top field, 2->bottom field, 3->frame
- * @param offset offset into the AVFrame.data from which the slice should be read
- */
- void (*draw_horiz_band)(struct AVCodecContext *s,
- const AVFrame *src, int offset[4],
- int y, int type, int height);
- /* audio only */
- int sample_rate; ///< samples per sec
- int channels;
- /**
- * audio sample format.
- * - encoding: set by user.
- * - decoding: set by lavc.
- */
- enum SampleFormat sample_fmt; ///< sample format, currenly unused
- /* the following data should not be initialized */
- /**
- * samples per packet. initialized when calling 'init'
- */
- int frame_size;
- int frame_number; ///< audio or video frame number
- int real_pict_num; ///< returns the real picture number of previous encoded frame
- /**
- * number of frames the decoded output will be delayed relative to
- * the encoded input.
- * - encoding: set by lavc.
- * - decoding: unused
- */
- int delay;
- /* - encoding parameters */
- float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
- float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
- /**
- * minimum quantizer.
- * - encoding: set by user.
- * - decoding: unused
- */
- int qmin;
- /**
- * maximum quantizer.
- * - encoding: set by user.
- * - decoding: unused
- */
- int qmax;
- /**
- * maximum quantizer difference etween frames.
- * - encoding: set by user.
- * - decoding: unused
- */
- int max_qdiff;
- /**
- * maximum number of b frames between non b frames.
- * note: the output will be delayed by max_b_frames+1 relative to the input
- * - encoding: set by user.
- * - decoding: unused
- */
- int max_b_frames;
- /**
- * qscale factor between ip and b frames.
- * - encoding: set by user.
- * - decoding: unused
- */
- float b_quant_factor;
- /** obsolete FIXME remove */
- int rc_strategy;
- #define FF_RC_STRATEGY_XVID 1
- int b_frame_strategy;
- /**
- * hurry up amount.
- * deprecated in favor of skip_idct and skip_frame
- * - encoding: unused
- * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
- */
- int hurry_up;
- struct AVCodec *codec;
- void *priv_data;
- /* unused, FIXME remove*/
- int rtp_mode;
- int rtp_payload_size; /* The size of the RTP payload: the coder will */
- /* do it's best to deliver a chunk with size */
- /* below rtp_payload_size, the chunk will start */
- /* with a start code on some codecs like H.263 */
- /* This doesn't take account of any particular */
- /* headers inside the transmited RTP payload */
- /* The RTP callback: This function is called */
- /* every time the encoder has a packet to send */
- /* Depends on the encoder if the data starts */
- /* with a Start Code (it should) H.263 does. */
- /* mb_nb contains the number of macroblocks */
- /* encoded in the RTP payload */
- void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb);
- /* statistics, used for 2-pass encoding */
- int mv_bits;
- int header_bits;
- int i_tex_bits;
- int p_tex_bits;
- int i_count;
- int p_count;
- int skip_count;
- int misc_bits;
- /**
- * number of bits used for the previously encoded frame.
- * - encoding: set by lavc
- * - decoding: unused
- */
- int frame_bits;
- /**
- * private data of the user, can be used to carry app specific stuff.
- * - encoding: set by user
- * - decoding: set by user
- */
- void *opaque;
- char codec_name[32];
- enum CodecType codec_type; /* see CODEC_TYPE_xxx */
- enum CodecID codec_id; /* see CODEC_ID_xxx */
- /**
- * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
- * this is used to workaround some encoder bugs
- * - encoding: set by user, if not then the default based on codec_id will be used
- * - decoding: set by user, will be converted to upper case by lavc during init
- */
- unsigned int codec_tag;
- /**
- * workaround bugs in encoders which sometimes cannot be detected automatically.
- * - encoding: set by user
- * - decoding: set by user
- */
- int workaround_bugs;
- #define FF_BUG_AUTODETECT 1 ///< autodetection
- #define FF_BUG_OLD_MSMPEG4 2
- #define FF_BUG_XVID_ILACE 4
- #define FF_BUG_UMP4 8
- #define FF_BUG_NO_PADDING 16
- #define FF_BUG_AMV 32
- #define FF_BUG_AC_VLC 0 ///< will be removed, libavcodec can now handle these non compliant files by default
- #define FF_BUG_QPEL_CHROMA 64
- #define FF_BUG_STD_QPEL 128
- #define FF_BUG_QPEL_CHROMA2 256
- #define FF_BUG_DIRECT_BLOCKSIZE 512
- #define FF_BUG_EDGE 1024
- #define FF_BUG_HPEL_CHROMA 2048
- #define FF_BUG_DC_CLIP 4096
- #define FF_BUG_MS 8192 ///< workaround various bugs in microsofts broken decoders
- //#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
- /**
- * luma single coeff elimination threshold.
- * - encoding: set by user
- * - decoding: unused
- */
- int luma_elim_threshold;
- /**
- * chroma single coeff elimination threshold.
- * - encoding: set by user
- * - decoding: unused
- */
- int chroma_elim_threshold;
- /**
- * strictly follow the std (MPEG4, ...).
- * - encoding: set by user
- * - decoding: unused
- */
- int strict_std_compliance;
- #define FF_COMPLIANCE_VERY_STRICT 2 ///< strictly conform to a older more strict version of the spec or reference software
- #define FF_COMPLIANCE_STRICT 1 ///< strictly conform to all the things in the spec no matter what consequences
- #define FF_COMPLIANCE_NORMAL 0
- #define FF_COMPLIANCE_INOFFICIAL -1 ///< allow inofficial extensions
- #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< allow non standarized experimental things
- /**
- * qscale offset between ip and b frames.
- * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
- * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
- * - encoding: set by user.
- * - decoding: unused
- */
- float b_quant_offset;
- /**
- * error resilience higher values will detect more errors but may missdetect
- * some more or less valid parts as errors.
- * - encoding: unused
- * - decoding: set by user
- */
- int error_resilience;
- #define FF_ER_CAREFUL 1
- #define FF_ER_COMPLIANT 2
- #define FF_ER_AGGRESSIVE 3
- #define FF_ER_VERY_AGGRESSIVE 4
- /**
- * called at the beginning of each frame to get a buffer for it.
- * if pic.reference is set then the frame will be read later by lavc
- * avcodec_align_dimensions() should be used to find the required width and
- * height, as they normally need to be rounded up to the next multiple of 16
- * - encoding: unused
- * - decoding: set by lavc, user can override
- */
- int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
- /**
- * called to release buffers which where allocated with get_buffer.
- * a released buffer can be reused in get_buffer()
- * pic.data[*] must be set to NULL
- * - encoding: unused
- * - decoding: set by lavc, user can override
- */
- void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
- /**
- * if 1 the stream has a 1 frame delay during decoding.
- * - encoding: set by lavc
- * - decoding: set by lavc
- */
- int has_b_frames;
- /**
- * number of bytes per packet if constant and known or 0
- * used by some WAV based audio codecs
- */
- int block_align;
- int parse_only; /* - decoding only: if true, only parsing is done
- (function avcodec_parse_frame()). The frame
- data is returned. Only MPEG codecs support this now. */
- /**
- * 0-> h263 quant 1-> mpeg quant.
- * - encoding: set by user.
- * - decoding: unused
- */
- int mpeg_quant;
- /**
- * pass1 encoding statistics output buffer.
- * - encoding: set by lavc
- * - decoding: unused
- */
- char *stats_out;
- /**
- * pass2 encoding statistics input buffer.
- * concatenated stuff from stats_out of pass1 should be placed here
- * - encoding: allocated/set/freed by user
- * - decoding: unused
- */
- char *stats_in;
- /**
- * ratecontrol qmin qmax limiting method.
- * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
- * - encoding: set by user.
- * - decoding: unused
- */
- float rc_qsquish;
- float rc_qmod_amp;
- int rc_qmod_freq;
- /**
- * ratecontrol override, see RcOverride.
- * - encoding: allocated/set/freed by user.
- * - decoding: unused
- */
- RcOverride *rc_override;
- int rc_override_count;
- /**
- * rate control equation.
- * - encoding: set by user
- * - decoding: unused
- */
- char *rc_eq;
- /**
- * maximum bitrate.
- * - encoding: set by user.
- * - decoding: unused
- */
- int rc_max_rate;
- /**
- * minimum bitrate.
- * - encoding: set by user.
- * - decoding: unused
- */
- int rc_min_rate;
- /**
- * decoder bitstream buffer size.
- * - encoding: set by user.
- * - decoding: unused
- */
- int rc_buffer_size;
- float rc_buffer_aggressivity;
- /**
- * qscale factor between p and i frames.
- * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
- * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
- * - encoding: set by user.
- * - decoding: unused
- */
- float i_quant_factor;
- /**
- * qscale offset between p and i frames.
- * - encoding: set by user.
- * - decoding: unused
- */
- float i_quant_offset;
- /**
- * initial complexity for pass1 ratecontrol.
- * - encoding: set by user.
- * - decoding: unused
- */
- float rc_initial_cplx;
- /**
- * dct algorithm, see FF_DCT_* below.
- * - encoding: set by user
- * - decoding: unused
- */
- int dct_algo;
- #define FF_DCT_AUTO 0
- #define FF_DCT_FASTINT 1
- #define FF_DCT_INT 2
- #define FF_DCT_MMX 3
- #define FF_DCT_MLIB 4
- #define FF_DCT_ALTIVEC 5
- #define FF_DCT_FAAN 6
- /**
- * luminance masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused
- */
- float lumi_masking;
- /**
- * temporary complexity masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused
- */
- float temporal_cplx_masking;
- /**
- * spatial complexity masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused
- */
- float spatial_cplx_masking;
- /**
- * p block masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused
- */
- float p_masking;
- /**
- * darkness masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused
- */
- float dark_masking;
- /* for binary compatibility */
- int unused;
- /**
- * idct algorithm, see FF_IDCT_* below.
- * - encoding: set by user
- * - decoding: set by user
- */
- int idct_algo;
- #define FF_IDCT_AUTO 0
- #define FF_IDCT_INT 1
- #define FF_IDCT_SIMPLE 2
- #define FF_IDCT_SIMPLEMMX 3
- #define FF_IDCT_LIBMPEG2MMX 4
- #define FF_IDCT_PS2 5
- #define FF_IDCT_MLIB 6
- #define FF_IDCT_ARM 7
- #define FF_IDCT_ALTIVEC 8
- #define FF_IDCT_SH4 9
- #define FF_IDCT_SIMPLEARM 10
- #define FF_IDCT_H264 11
- #define FF_IDCT_VP3 12
- #define FF_IDCT_IPP 13
- #define FF_IDCT_XVIDMMX 14
- /**
- * slice count.
- * - encoding: set by lavc
- * - decoding: set by user (or 0)
- */
- int slice_count;
- /**
- * slice offsets in the frame in bytes.
- * - encoding: set/allocated by lavc
- * - decoding: set/allocated by user (or NULL)
- */
- int *slice_offset;
- /**
- * error concealment flags.
- * - encoding: unused
- * - decoding: set by user
- */
- int error_concealment;
- #define FF_EC_GUESS_MVS 1
- #define FF_EC_DEBLOCK 2
- /**
- * dsp_mask could be add used to disable unwanted CPU features
- * CPU features (i.e. MMX, SSE. ...)
- *
- * with FORCE flag you may instead enable given CPU features
- * (Dangerous: usable in case of misdetection, improper usage however will
- * result into program crash)
- */
- unsigned dsp_mask;
- #define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
- /* lower 16 bits - CPU features */
- #ifdef HAVE_MMX
- #define FF_MM_MMX 0x0001 /* standard MMX */
- #define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
- #define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
- #define FF_MM_SSE 0x0008 /* SSE functions */
- #define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
- #define FF_MM_3DNOWEXT 0x0020 /* AMD 3DNowExt */
- #endif /* HAVE_MMX */
- #ifdef HAVE_IWMMXT
- #define FF_MM_IWMMXT 0x0100 /* XScale IWMMXT */
- #endif /* HAVE_IWMMXT */
- /**
- * bits per sample/pixel from the demuxer (needed for huffyuv).
- * - encoding: set by lavc
- * - decoding: set by user
- */
- int bits_per_sample;
- /**
- * prediction method (needed for huffyuv).
- * - encoding: set by user
- * - decoding: unused
- */
- int prediction_method;
- #define FF_PRED_LEFT 0
- #define FF_PRED_PLANE 1
- #define FF_PRED_MEDIAN 2
- /**
- * sample aspect ratio (0 if unknown).
- * numerator and denominator must be relative prime and smaller then 256 for some video standards
- * - encoding: set by user.
- * - decoding: set by lavc.
- */
- AVRational sample_aspect_ratio;
- /**
- * the picture in the bitstream.
- * - encoding: set by lavc
- * - decoding: set by lavc
- */
- AVFrame *coded_frame;
- /**
- * debug.
- * - encoding: set by user.
- * - decoding: set by user.
- */
- int debug;
- #define FF_DEBUG_PICT_INFO 1
- #define FF_DEBUG_RC 2
- #define FF_DEBUG_BITSTREAM 4
- #define FF_DEBUG_MB_TYPE 8
- #define FF_DEBUG_QP 16
- #define FF_DEBUG_MV 32
- #define FF_DEBUG_DCT_COEFF 0x00000040
- #define FF_DEBUG_SKIP 0x00000080
- #define FF_DEBUG_STARTCODE 0x00000100
- #define FF_DEBUG_PTS 0x00000200
- #define FF_DEBUG_ER 0x00000400
- #define FF_DEBUG_MMCO 0x00000800
- #define FF_DEBUG_BUGS 0x00001000
- #define FF_DEBUG_VIS_QP 0x00002000
- #define FF_DEBUG_VIS_MB_TYPE 0x00004000
- /**
- * debug.
- * - encoding: set by user.
- * - decoding: set by user.
- */
- int debug_mv;
- #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames
- #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames
- #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames
- /**
- * error.
- * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
- * - decoding: unused
- */
- uint64_t error[4];
- /**
- * minimum MB quantizer.
- * - encoding: unused
- * - decoding: unused
- */
- int mb_qmin;
- /**
- * maximum MB quantizer.
- * - encoding: unused
- * - decoding: unused
- */
- int mb_qmax;
- /**
- * motion estimation compare function.
- * - encoding: set by user.
- * - decoding: unused
- */
- int me_cmp;
- /**
- * subpixel motion estimation compare function.
- * - encoding: set by user.
- * - decoding: unused
- */
- int me_sub_cmp;
- /**
- * macroblock compare function (not supported yet).
- * - encoding: set by user.
- * - decoding: unused
- */
- int mb_cmp;
- /**
- * interlaced dct compare function
- * - encoding: set by user.
- * - decoding: unused
- */
- int ildct_cmp;
- #define FF_CMP_SAD 0
- #define FF_CMP_SSE 1
- #define FF_CMP_SATD 2
- #define FF_CMP_DCT 3
- #define FF_CMP_PSNR 4
- #define FF_CMP_BIT 5
- #define FF_CMP_RD 6
- #define FF_CMP_ZERO 7
- #define FF_CMP_VSAD 8
- #define FF_CMP_VSSE 9
- #define FF_CMP_NSSE 10
- #define FF_CMP_W53 11
- #define FF_CMP_W97 12
- #define FF_CMP_DCTMAX 13
- #define FF_CMP_DCT264 14
- #define FF_CMP_CHROMA 256
- /**
- * ME diamond size & shape.
- * - encoding: set by user.
- * - decoding: unused
- */
- int dia_size;
- /**
- * amount of previous MV predictors (2a+1 x 2a+1 square).
- * - encoding: set by user.
- * - decoding: unused
- */
- int last_predictor_count;
- /**
- * pre pass for motion estimation.
- * - encoding: set by user.
- * - decoding: unused
- */
- int pre_me;
- /**
- * motion estimation pre pass compare function.
- * - encoding: set by user.
- * - decoding: unused
- */
- int me_pre_cmp;
- /**
- * ME pre pass diamond size & shape.
- * - encoding: set by user.
- * - decoding: unused
- */
- int pre_dia_size;
- /**
- * subpel ME quality.
- * - encoding: set by user.
- * - decoding: unused
- */
- int me_subpel_quality;
- /**
- * callback to negotiate the pixelFormat.
- * @param fmt is the list of formats which are supported by the codec,
- * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
- * the first is allways the native one
- * @return the choosen format
- * - encoding: unused
- * - decoding: set by user, if not set then the native format will always be choosen
- */
- enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt);
- /**
- * DTG active format information (additionnal aspect ratio
- * information only used in DVB MPEG2 transport streams). 0 if
- * not set.
- *
- * - encoding: unused.
- * - decoding: set by decoder
- */
- int dtg_active_format;
- #define FF_DTG_AFD_SAME 8
- #define FF_DTG_AFD_4_3 9
- #define FF_DTG_AFD_16_9 10
- #define FF_DTG_AFD_14_9 11
- #define FF_DTG_AFD_4_3_SP_14_9 13
- #define FF_DTG_AFD_16_9_SP_14_9 14
- #define FF_DTG_AFD_SP_4_3 15
- /**
- * Maximum motion estimation search range in subpel units.
- * if 0 then no limit
- *
- * - encoding: set by user.
- * - decoding: unused.
- */
- int me_range;
- /**
- * intra quantizer bias.
- * - encoding: set by user.
- * - decoding: unused
- */
- int intra_quant_bias;
- #define FF_DEFAULT_QUANT_BIAS 999999
- /**
- * inter quantizer bias.
- * - encoding: set by user.
- * - decoding: unused
- */
- int inter_quant_bias;
- /**
- * color table ID.
- * - encoding: unused.
- * - decoding: which clrtable should be used for 8bit RGB images
- * table have to be stored somewhere FIXME
- */
- int color_table_id;
- /**
- * internal_buffer count.
- * Don't touch, used by lavc default_get_buffer()
- */
- int internal_buffer_count;
- /**
- * internal_buffers.
- * Don't touch, used by lavc default_get_buffer()
- */
- void *internal_buffer;
- #define FF_LAMBDA_SHIFT 7
- #define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
- #define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
- #define FF_LAMBDA_MAX (256*128-1)
- #define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
- /**
- * global quality for codecs which cannot change it per frame.
- * this should be proportional to MPEG1/2/4 qscale.
- * - encoding: set by user.
- * - decoding: unused
- */
- int global_quality;
- #define FF_CODER_TYPE_VLC 0
- #define FF_CODER_TYPE_AC 1
- /**
- * coder type
- * - encoding: set by user.
- * - decoding: unused
- */
- int coder_type;
- /**
- * context model
- * - encoding: set by user.
- * - decoding: unused
- */
- int context_model;
- #if 0
- /**
- *
- * - encoding: unused
- * - decoding: set by user.
- */
- uint8_t * (*realloc)(struct AVCodecContext *s, uint8_t *buf, int buf_size);
- #endif
- /**
- * slice flags
- * - encoding: unused
- * - decoding: set by user.
- */
- int slice_flags;
- #define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
- #define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
- #define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
- /**
- * XVideo Motion Acceleration
- * - encoding: forbidden
- * - decoding: set by decoder
- */
- int xvmc_acceleration;
- /**
- * macroblock decision mode
- * - encoding: set by user.
- * - decoding: unused
- */
- int mb_decision;
- #define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
- #define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
- #define FF_MB_DECISION_RD 2 ///< rate distoration
- /**
- * custom intra quantization matrix
- * - encoding: set by user, can be NULL
- * - decoding: set by lavc
- */
- uint16_t *intra_matrix;
- /**
- * custom inter quantization matrix
- * - encoding: set by user, can be NULL
- * - decoding: set by lavc
- */
- uint16_t *inter_matrix;
- /**
- * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
- * this is used to workaround some encoder bugs
- * - encoding: unused
- * - decoding: set by user, will be converted to upper case by lavc during init
- */
- unsigned int stream_codec_tag;
- /**
- * scene change detection threshold.
- * 0 is default, larger means fewer detected scene changes
- * - encoding: set by user.
- * - decoding: unused
- */
- int scenechange_threshold;
- /**
- * minimum lagrange multipler
- * - encoding: set by user.
- * - decoding: unused
- */
- int lmin;
- /**
- * maximum lagrange multipler
- * - encoding: set by user.
- * - decoding: unused
- */
- int lmax;
- /**
- * Palette control structure
- * - encoding: ??? (no palette-enabled encoder yet)
- * - decoding: set by user.
- */
- struct AVPaletteControl *palctrl;
- /**
- * noise reduction strength
- * - encoding: set by user.
- * - decoding: unused
- */
- int noise_reduction;
- /**
- * called at the beginning of a frame to get cr buffer for it.
- * buffer type (size, hints) must be the same. lavc won't check it.
- * lavc will pass previous buffer in pic, function should return
- * same buffer or new buffer with old frame "painted" into it.
- * if pic.data[0] == NULL must behave like get_buffer().
- * - encoding: unused
- * - decoding: set by lavc, user can override
- */
- int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic);
- /**
- * number of bits which should be loaded into the rc buffer before decoding starts
- * - encoding: set by user.
- * - decoding: unused
- */
- int rc_initial_buffer_occupancy;
- /**
- *
- * - encoding: set by user.
- * - decoding: unused
- */
- int inter_threshold;
- /**
- * CODEC_FLAG2_*.
- * - encoding: set by user.
- * - decoding: set by user.
- */
- int flags2;
- /**
- * simulates errors in the bitstream to test error concealment.
- * - encoding: set by user.
- * - decoding: unused.
- */
- int error_rate;
- /**
- * MP3 antialias algorithm, see FF_AA_* below.
- * - encoding: unused
- * - decoding: set by user
- */
- int antialias_algo;
- #define FF_AA_AUTO 0
- #define FF_AA_FASTINT 1 //not implemented yet
- #define FF_AA_INT 2
- #define FF_AA_FLOAT 3
- /**
- * Quantizer noise shaping.
- * - encoding: set by user
- * - decoding: unused
- */
- int quantizer_noise_shaping;
- /**
- * Thread count.
- * is used to decide how many independant tasks should be passed to execute()
- * - encoding: set by user
- * - decoding: set by user
- */
- int thread_count;
- /**
- * the codec may call this to execute several independant things. it will return only after
- * finishing all tasks, the user may replace this with some multithreaded implementation, the
- * default implementation will execute the parts serially
- * @param count the number of things to execute
- * - encoding: set by lavc, user can override
- * - decoding: set by lavc, user can override
- */
- int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void **arg2, int *ret, int count);
- /**
- * Thread opaque.
- * can be used by execute() to store some per AVCodecContext stuff.
- * - encoding: set by execute()
- * - decoding: set by execute()
- */
- void *thread_opaque;
- /**
- * Motion estimation threshold. under which no motion estimation is
- * performed, but instead the user specified motion vectors are used
- *
- * - encoding: set by user
- * - decoding: unused
- */
- int me_threshold;
- /**
- * Macroblock threshold. under which the user specified macroblock types will be used
- * - encoding: set by user
- * - decoding: unused
- */
- int mb_threshold;
- /**
- * precision of the intra dc coefficient - 8.
- * - encoding: set by user
- * - decoding: unused
- */
- int intra_dc_precision;
- /**
- * noise vs. sse weight for the nsse comparsion function.
- * - encoding: set by user
- * - decoding: unused
- */
- int nsse_weight;
- /**
- * number of macroblock rows at the top which are skipped.
- * - encoding: unused
- * - decoding: set by user
- */
- int skip_top;
- /**
- * number of macroblock rows at the bottom which are skipped.
- * - encoding: unused
- * - decoding: set by user
- */
- int skip_bottom;
- /**
- * profile
- * - encoding: set by user
- * - decoding: set by lavc
- */
- int profile;
- #define FF_PROFILE_UNKNOWN -99
- /**
- * level
- * - encoding: set by user
- * - decoding: set by lavc
- */
- int level;
- #define FF_LEVEL_UNKNOWN -99
- /**
- * low resolution decoding. 1-> 1/2 size, 2->1/4 size
- * - encoding: unused
- * - decoding: set by user
- */
- int lowres;
- /**
- * bitsream width / height. may be different from width/height if lowres
- * or other things are used
- * - encoding: unused
- * - decoding: set by user before init if known, codec should override / dynamically change if needed
- */
- int coded_width, coded_height;
- /**
- * frame skip threshold
- * - encoding: set by user
- * - decoding: unused
- */
- int frame_skip_threshold;
- /**
- * frame skip factor
- * - encoding: set by user
- * - decoding: unused
- */
- int frame_skip_factor;
- /**
- * frame skip exponent
- * - encoding: set by user
- * - decoding: unused
- */
- int frame_skip_exp;
- /**
- * frame skip comparission function
- * - encoding: set by user.
- * - decoding: unused
- */
- int frame_skip_cmp;
- /**
- * border processing masking. raises the quantizer for mbs on the borders
- * of the picture.
- * - encoding: set by user
- * - decoding: unused
- */
- float border_masking;
- /**
- * minimum MB lagrange multipler.
- * - encoding: set by user.
- * - decoding: unused
- */
- int mb_lmin;
- /**
- * maximum MB lagrange multipler.
- * - encoding: set by user.
- * - decoding: unused
- */
- int mb_lmax;
- /**
- *
- * - encoding: set by user.
- * - decoding: unused
- */
- int me_penalty_compensation;
- /**
- *
- * - encoding: unused
- * - decoding: set by user.
- */
- enum AVDiscard skip_loop_filter;
- /**
- *
- * - encoding: unused
- * - decoding: set by user.
- */
- enum AVDiscard skip_idct;
- /**
- *
- * - encoding: unused
- * - decoding: set by user.
- */
- enum AVDiscard skip_frame;
- /**
- *
- * - encoding: set by user.
- * - decoding: unused
- */
- int bidir_refine;
- /**
- *
- * - encoding: set by user.
- * - decoding: unused
- */
- int brd_scale;
- /**
- * constant rate factor - quality-based VBR - values ~correspond to qps
- * - encoding: set by user.
- * - decoding: unused
- */
- int crf;
- /**
- * constant quantization parameter rate control method
- * - encoding: set by user.
- * - decoding: unused
- */
- int cqp;
- /**
- * minimum gop size
- * - encoding: set by user.
- * - decoding: unused
- */
- int keyint_min;
- /**
- * number of reference frames
- * - encoding: set by user.
- * - decoding: unused
- */
- int refs;
- /**
- * chroma qp offset from luma
- * - encoding: set by user.
- * - decoding: unused
- */
- int chromaoffset;
- /**
- * influences how often b-frames are used
- * - encoding: set by user.
- * - decoding: unused
- */
- int bframebias;
- /**
- * trellis RD quantization
- * - encoding: set by user.
- * - decoding: unused
- */
- int trellis;
- /**
- * reduce fluctuations in qp (before curve compression)
- * - encoding: set by user.
- * - decoding: unused
- */
- float complexityblur;
- /**
- * in-loop deblocking filter alphac0 parameter
- * alpha is in the range -6...6
- * - encoding: set by user.
- * - decoding: unused
- */
- int deblockalpha;
- /**
- * in-loop deblocking filter beta parameter
- * beta is in the range -6...6
- * - encoding: set by user.
- * - decoding: unused
- */
- int deblockbeta;
- /**
- * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
- * - encoding: set by user.
- * - decoding: unused
- */
- int partitions;
- #define X264_PART_I4X4 0x001 /* Analyse i4x4 */
- #define X264_PART_I8X8 0x002 /* Analyse i8x8 (requires 8x8 transform) */
- #define X264_PART_P8X8 0x010 /* Analyse p16x8, p8x16 and p8x8 */
- #define X264_PART_P4X4 0x020 /* Analyse p8x4, p4x8, p4x4 */
- #define X264_PART_B8X8 0x100 /* Analyse b16x8, b8x16 and b8x8 */
- /**
- * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
- * - encoding: set by user.
- * - decoding: unused
- */
- int directpred;
- /**
- * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
- * - encoding: set by user.
- * - decoding: unused
- */
- int cutoff;
- /**
- * multiplied by qscale for each frame and added to scene_change_score
- * - encoding: set by user.
- * - decoding: unused
- */
- int scenechange_factor;
- } AVCodecContext;
- /**
- * AVCodec.
- */
- typedef struct AVCodec {
- const char *name;
- enum CodecType type;
- enum CodecID id;
- int priv_data_size;
- int (*init)(AVCodecContext *);
- int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
- int (*close)(AVCodecContext *);
- int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
- uint8_t *buf, int buf_size);
- int capabilities;
- #if LIBAVCODEC_VERSION_INT < ((50<<16)+(0<<8)+0)
- void *dummy; // FIXME remove next time we break binary compatibility
- #endif
- struct AVCodec *next;
- void (*flush)(AVCodecContext *);
- const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
- const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
- } AVCodec;
- /**
- * four components are given, that's all.
- * the last component is alpha
- */
- typedef struct AVPicture {
- uint8_t *data[4];
- int linesize[4]; ///< number of bytes per line
- } AVPicture;
- /**
- * AVPaletteControl
- * This structure defines a method for communicating palette changes
- * between and demuxer and a decoder.
- */
- #define AVPALETTE_SIZE 1024
- #define AVPALETTE_COUNT 256
- typedef struct AVPaletteControl {
- /* demuxer sets this to 1 to indicate the palette has changed;
- * decoder resets to 0 */
- int palette_changed;
- /* 4-byte ARGB palette entries, stored in native byte order; note that
- * the individual palette components should be on a 8-bit scale; if
- * the palette data comes from a IBM VGA native format, the component
- * data is probably 6 bits in size and needs to be scaled */
- unsigned int palette[AVPALETTE_COUNT];
- } AVPaletteControl;
- typedef struct AVSubtitleRect {
- uint16_t x;
- uint16_t y;
- uint16_t w;
- uint16_t h;
- uint16_t nb_colors;
- int linesize;
- uint32_t *rgba_palette;
- uint8_t *bitmap;
- } AVSubtitleRect;
- typedef struct AVSubtitle {
- uint16_t format; /* 0 = graphics */
- uint32_t start_display_time; /* relative to packet pts, in ms */
- uint32_t end_display_time; /* relative to packet pts, in ms */
- uint32_t num_rects;
- AVSubtitleRect *rects;
- } AVSubtitle;
- extern AVCodec ac3_encoder;
- extern AVCodec mp2_encoder;
- extern AVCodec mp3lame_encoder;
- extern AVCodec oggvorbis_encoder;
- extern AVCodec oggtheora_encoder;
- extern AVCodec faac_encoder;
- extern AVCodec xvid_encoder;
- extern AVCodec mpeg1video_encoder;
- extern AVCodec mpeg2video_encoder;
- extern AVCodec h261_encoder;
- extern AVCodec h263_encoder;
- extern AVCodec h263p_encoder;
- extern AVCodec flv_encoder;
- extern AVCodec rv10_encoder;
- extern AVCodec rv20_encoder;
- extern AVCodec dvvideo_encoder;
- extern AVCodec mjpeg_encoder;
- extern AVCodec ljpeg_encoder;
- extern AVCodec jpegls_encoder;
- extern AVCodec png_encoder;
- extern AVCodec ppm_encoder;
- extern AVCodec pgm_encoder;
- extern AVCodec pgmyuv_encoder;
- extern AVCodec pbm_encoder;
- extern AVCodec pam_encoder;
- extern AVCodec mpeg4_encoder;
- extern AVCodec msmpeg4v1_encoder;
- extern AVCodec msmpeg4v2_encoder;
- extern AVCodec msmpeg4v3_encoder;
- extern AVCodec wmv1_encoder;
- extern AVCodec wmv2_encoder;
- extern AVCodec huffyuv_encoder;
- extern AVCodec ffvhuff_encoder;
- extern AVCodec h264_encoder;
- extern AVCodec asv1_encoder;
- extern AVCodec asv2_encoder;
- extern AVCodec vcr1_encoder;
- extern AVCodec ffv1_encoder;
- extern AVCodec snow_encoder;
- extern AVCodec mdec_encoder;
- extern AVCodec zlib_encoder;
- extern AVCodec sonic_encoder;
- extern AVCodec sonic_ls_encoder;
- extern AVCodec svq1_encoder;
- extern AVCodec x264_encoder;
- extern AVCodec h263_decoder;
- extern AVCodec h261_decoder;
- extern AVCodec mpeg4_decoder;
- extern AVCodec msmpeg4v1_decoder;
- extern AVCodec msmpeg4v2_decoder;
- extern AVCodec msmpeg4v3_decoder;
- extern AVCodec wmv1_decoder;
- extern AVCodec wmv2_decoder;
- extern AVCodec vc9_decoder;
- extern AVCodec wmv3_decoder;
- extern AVCodec mpeg1video_decoder;
- extern AVCodec mpeg2video_decoder;
- extern AVCodec mpegvideo_decoder;
- extern AVCodec mpeg_xvmc_decoder;
- extern AVCodec h263i_decoder;
- extern AVCodec flv_decoder;
- extern AVCodec rv10_decoder;
- extern AVCodec rv20_decoder;
- extern AVCodec rv30_decoder;
- extern AVCodec rv40_decoder;
- extern AVCodec svq1_decoder;
- extern AVCodec svq3_decoder;
- extern AVCodec dvvideo_decoder;
- extern AVCodec wmav1_decoder;
- extern AVCodec wmav2_decoder;
- extern AVCodec mjpeg_decoder;
- extern AVCodec mjpegb_decoder;
- extern AVCodec sp5x_decoder;
- extern AVCodec png_decoder;
- extern AVCodec mp2_decoder;
- extern AVCodec mp3_decoder;
- extern AVCodec mp3adu_decoder;
- extern AVCodec mp3on4_decoder;
- extern AVCodec qdm2_decoder;
- extern AVCodec cook_decoder;
- extern AVCodec truespeech_decoder;
- extern AVCodec tta_decoder;
- extern AVCodec mace3_decoder;
- extern AVCodec mace6_decoder;
- extern AVCodec huffyuv_decoder;
- extern AVCodec ffvhuff_decoder;
- extern AVCodec oggvorbis_decoder;
- extern AVCodec oggtheora_decoder;
- extern AVCodec cyuv_decoder;
- extern AVCodec h264_decoder;
- extern AVCodec indeo3_decoder;
- extern AVCodec vp3_decoder;
- extern AVCodec theora_decoder;
- extern AVCodec amr_nb_decoder;
- extern AVCodec amr_nb_encoder;
- extern AVCodec amr_wb_encoder;
- extern AVCodec amr_wb_decoder;
- extern AVCodec aac_decoder;
- extern AVCodec mpeg4aac_decoder;
- extern AVCodec asv1_decoder;
- extern AVCodec asv2_decoder;
- extern AVCodec vcr1_decoder;
- extern AVCodec cljr_decoder;
- extern AVCodec ffv1_decoder;
- extern AVCodec snow_decoder;
- extern AVCodec fourxm_decoder;
- extern AVCodec mdec_decoder;
- extern AVCodec roq_decoder;
- extern AVCodec interplay_video_decoder;
- extern AVCodec xan_wc3_decoder;
- extern AVCodec rpza_decoder;
- extern AVCodec cinepak_decoder;
- extern AVCodec msrle_decoder;
- extern AVCodec msvideo1_decoder;
- extern AVCodec vqa_decoder;
- extern AVCodec idcin_decoder;
- extern AVCodec eightbps_decoder;
- extern AVCodec smc_decoder;
- extern AVCodec flic_decoder;
- extern AVCodec vmdvideo_decoder;
- extern AVCodec vmdaudio_decoder;
- extern AVCodec truemotion1_decoder;
- extern AVCodec truemotion2_decoder;
- extern AVCodec mszh_decoder;
- extern AVCodec zlib_decoder;
- extern AVCodec ra_144_decoder;
- extern AVCodec ra_288_decoder;
- extern AVCodec roq_dpcm_decoder;
- extern AVCodec interplay_dpcm_decoder;
- extern AVCodec xan_dpcm_decoder;
- extern AVCodec sol_dpcm_decoder;
- extern AVCodec sonic_decoder;
- extern AVCodec qtrle_decoder;
- extern AVCodec flac_decoder;
- extern AVCodec tscc_decoder;
- extern AVCodec cscd_decoder;
- extern AVCodec nuv_decoder;
- extern AVCodec ulti_decoder;
- extern AVCodec qdraw_decoder;
- extern AVCodec xl_decoder;
- extern AVCodec qpeg_decoder;
- extern AVCodec shorten_decoder;
- extern AVCodec loco_decoder;
- extern AVCodec wnv1_decoder;
- extern AVCodec aasc_decoder;
- extern AVCodec alac_decoder;
- extern AVCodec ws_snd1_decoder;
- extern AVCodec indeo2_decoder;
- extern AVCodec vorbis_decoder;
- extern AVCodec fraps_decoder;
- extern AVCodec libgsm_encoder;
- extern AVCodec libgsm_decoder;
- extern AVCodec bmp_decoder;
- extern AVCodec mmvideo_decoder;
- extern AVCodec zmbv_decoder;
- extern AVCodec avs_decoder;
- extern AVCodec smacker_decoder;
- extern AVCodec smackaud_decoder;
- extern AVCodec kmvc_decoder;
- /* pcm codecs */
- #define PCM_CODEC(id, name)
- extern AVCodec name ## _decoder;
- extern AVCodec name ## _encoder
- PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
- PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
- PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
- PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
- PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
- PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
- PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
- PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
- PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
- PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
- PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
- PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
- PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
- PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
- PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
- PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
- PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
- /* adpcm codecs */
- PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
- PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
- PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
- PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
- PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
- PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);
- PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
- PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
- PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
- PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);
- PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
- PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);
- PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
- PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
- PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
- PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
- PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
- PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
- #undef PCM_CODEC
- /* dummy raw video codec */
- extern AVCodec rawvideo_encoder;
- extern AVCodec rawvideo_decoder;
- /* the following codecs use external GPL libs */
- extern AVCodec ac3_decoder;
- extern AVCodec dts_decoder;
- /* subtitles */
- extern AVCodec dvdsub_encoder;
- extern AVCodec dvdsub_decoder;
- extern AVCodec dvbsub_encoder;
- extern AVCodec dvbsub_decoder;
- /* resample.c */
- struct ReSampleContext;
- struct AVResampleContext;
- typedef struct ReSampleContext ReSampleContext;
- ReSampleContext *audio_resample_init(int output_channels, int input_channels,
- int output_rate, int input_rate);
- int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
- void audio_resample_close(ReSampleContext *s);
- struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff);
- int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx);
- void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance);
- void av_resample_close(struct AVResampleContext *c);
- /* YUV420 format is assumed ! */
- struct ImgReSampleContext;
- typedef struct ImgReSampleContext ImgReSampleContext;
- ImgReSampleContext *img_resample_init(int output_width, int output_height,
- int input_width, int input_height);
- ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
- int iwidth, int iheight,
- int topBand, int bottomBand,
- int leftBand, int rightBand,
- int padtop, int padbottom,
- int padleft, int padright);
- void img_resample(ImgReSampleContext *s,
- AVPicture *output, const AVPicture *input);
- void img_resample_close(ImgReSampleContext *s);
- /**
- * Allocate memory for a picture. Call avpicture_free to free it.
- *
- * @param picture the picture to be filled in.
- * @param pix_fmt the format of the picture.
- * @param width the width of the picture.
- * @param height the height of the picture.
- * @return 0 if successful, -1 if not.
- */
- int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
- /* Free a picture previously allocated by avpicture_alloc. */
- void avpicture_free(AVPicture *picture);
- int avpicture_fill(AVPicture *picture, uint8_t *ptr,
- int pix_fmt, int width, int height);
- int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
- unsigned char *dest, int dest_size);
- int avpicture_get_size(int pix_fmt, int width, int height);
- void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
- const char *avcodec_get_pix_fmt_name(int pix_fmt);
- void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
- enum PixelFormat avcodec_get_pix_fmt(const char* name);
- unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
- #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
- #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
- #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
- #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
- #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
- #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
- int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
- int has_alpha);
- int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
- int has_alpha, int *loss_ptr);
- #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
- #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
- int img_get_alpha_info(const AVPicture *src,
- int pix_fmt, int width, int height);
- /* convert among pixel formats */
- int img_convert(AVPicture *dst, int dst_pix_fmt,
- const AVPicture *src, int pix_fmt,
- int width, int height);
- /* deinterlace a picture */
- int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
- int pix_fmt, int width, int height);
- /* external high level API */
- extern AVCodec *first_avcodec;
- /* returns LIBAVCODEC_VERSION_INT constant */
- unsigned avcodec_version(void);
- /* returns LIBAVCODEC_BUILD constant */
- unsigned avcodec_build(void);
- void avcodec_init(void);
- void register_avcodec(AVCodec *format);
- AVCodec *avcodec_find_encoder(enum CodecID id);
- AVCodec *avcodec_find_encoder_by_name(const char *name);
- AVCodec *avcodec_find_decoder(enum CodecID id);
- AVCodec *avcodec_find_decoder_by_name(const char *name);
- void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
- void avcodec_get_context_defaults(AVCodecContext *s);
- AVCodecContext *avcodec_alloc_context(void);
- void avcodec_get_frame_defaults(AVFrame *pic);
- AVFrame *avcodec_alloc_frame(void);
- int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
- void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
- int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
- void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
- int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
- enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
- int avcodec_thread_init(AVCodecContext *s, int thread_count);
- void avcodec_thread_free(AVCodecContext *s);
- int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
- int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);
- //FIXME func typedef
- /**
- * opens / inits the AVCodecContext.
- * not thread save!
- */
- int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
- int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
- int *frame_size_ptr,
- uint8_t *buf, int buf_size);
- int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
- int *got_picture_ptr,
- uint8_t *buf, int buf_size);
- int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
- int *got_sub_ptr,
- const uint8_t *buf, int buf_size);
- int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata,
- int *data_size_ptr,
- uint8_t *buf, int buf_size);
- int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const short *samples);
- int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const AVFrame *pict);
- int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
- const AVSubtitle *sub);
- int avcodec_close(AVCodecContext *avctx);
- void avcodec_register_all(void);
- void avcodec_flush_buffers(AVCodecContext *avctx);
- void avcodec_default_free_buffers(AVCodecContext *s);
- /* misc usefull functions */
- /**
- * returns a single letter to describe the picture type
- */
- char av_get_pict_type_char(int pict_type);
- /* frame parsing */
- typedef struct AVCodecParserContext {
- void *priv_data;
- struct AVCodecParser *parser;
- int64_t frame_offset; /* offset of the current frame */
- int64_t cur_offset; /* current offset
- (incremented by each av_parser_parse()) */
- int64_t last_frame_offset; /* offset of the last frame */
- /* video info */
- int pict_type; /* XXX: put it back in AVCodecContext */
- int repeat_pict; /* XXX: put it back in AVCodecContext */
- int64_t pts; /* pts of the current frame */
- int64_t dts; /* dts of the current frame */
- /* private data */
- int64_t last_pts;
- int64_t last_dts;
- int fetch_timestamp;
- #define AV_PARSER_PTS_NB 4
- int cur_frame_start_index;
- int64_t cur_frame_offset[AV_PARSER_PTS_NB];
- int64_t cur_frame_pts[AV_PARSER_PTS_NB];
- int64_t cur_frame_dts[AV_PARSER_PTS_NB];
- int flags;
- #define PARSER_FLAG_COMPLETE_FRAMES 0x0001
- } AVCodecParserContext;
- typedef struct AVCodecParser {
- int codec_ids[5]; /* several codec IDs are permitted */
- int priv_data_size;
- int (*parser_init)(AVCodecParserContext *s);
- int (*parser_parse)(AVCodecParserContext *s,
- AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size);
- void (*parser_close)(AVCodecParserContext *s);
- int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
- struct AVCodecParser *next;
- } AVCodecParser;
- extern AVCodecParser *av_first_parser;
- void av_register_codec_parser(AVCodecParser *parser);
- AVCodecParserContext *av_parser_init(int codec_id);
- int av_parser_parse(AVCodecParserContext *s,
- AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size,
- int64_t pts, int64_t dts);
- int av_parser_change(AVCodecParserContext *s,
- AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size, int keyframe);
- void av_parser_close(AVCodecParserContext *s);
- extern AVCodecParser mpegvideo_parser;
- extern AVCodecParser mpeg4video_parser;
- extern AVCodecParser h261_parser;
- extern AVCodecParser h263_parser;
- extern AVCodecParser h264_parser;
- extern AVCodecParser mjpeg_parser;
- extern AVCodecParser pnm_parser;
- extern AVCodecParser mpegaudio_parser;
- extern AVCodecParser ac3_parser;
- extern AVCodecParser dvdsub_parser;
- extern AVCodecParser dvbsub_parser;
- extern AVCodecParser aac_parser;
- /* memory */
- void *av_malloc(unsigned int size);
- void *av_mallocz(unsigned int size);
- void *av_realloc(void *ptr, unsigned int size);
- void av_free(void *ptr);
- char *av_strdup(const char *s);
- void av_freep(void *ptr);
- void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
- /* for static data only */
- /* call av_free_static to release all staticaly allocated tables */
- void av_free_static(void);
- void *av_mallocz_static(unsigned int size);
- void *av_realloc_static(void *ptr, unsigned int size);
- /* add by bero : in adx.c */
- int is_adx(const unsigned char *buf,size_t bufsize);
- void img_copy(AVPicture *dst, const AVPicture *src,
- int pix_fmt, int width, int height);
- int img_crop(AVPicture *dst, const AVPicture *src,
- int pix_fmt, int top_band, int left_band);
- int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
- int padtop, int padbottom, int padleft, int padright, int *color);
- /* av_log API */
- #include <stdarg.h>
- #define AV_LOG_QUIET -1
- #define AV_LOG_ERROR 0
- #define AV_LOG_INFO 1
- #define AV_LOG_DEBUG 2
- #ifdef __GNUC__
- extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
- #else
- extern void av_log(void*, int level, const char *fmt, ...);
- #endif
- extern void av_vlog(void*, int level, const char *fmt, va_list);
- extern int av_log_get_level(void);
- extern void av_log_set_level(int);
- extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
- /* endian macros */
- #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
- #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
- #define BE_32(x) ((((uint8_t*)(x))[0] << 24) |
- (((uint8_t*)(x))[1] << 16) |
- (((uint8_t*)(x))[2] << 8) |
- ((uint8_t*)(x))[3])
- #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
- #define LE_32(x) ((((uint8_t*)(x))[3] << 24) |
- (((uint8_t*)(x))[2] << 16) |
- (((uint8_t*)(x))[1] << 8) |
- ((uint8_t*)(x))[0])
- #endif
- extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
- #ifdef __cplusplus
- }
- #endif
- #endif /* AVCODEC_H */