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avcodec.h
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上传日期：2021-12-09
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文件大小：66k
源码类别：
Audio
开发平台：
Visual C++
- #ifndef AVCODEC_H #define AVCODEC_H /** * @file avcodec.h * external api header. */ #ifdef __cplusplus extern "C" { #endif #include "common.h" #include "rational.h" #include <sys/types.h> /* size_t */ #define FFMPEG_VERSION_INT 0x000409 #define FFMPEG_VERSION "0.4.9-pre1" #define LIBAVCODEC_BUILD 4718 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT #define LIBAVCODEC_VERSION FFMPEG_VERSION #define AV_STRINGIFY(s) AV_TOSTRING(s) #define AV_TOSTRING(s) #s #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD) #define AV_NOPTS_VALUE int64_t_C(0x8000000000000000) #define AV_TIME_BASE 1000000 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_MP2, CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */ CODEC_ID_VORBIS, CODEC_ID_AC3, CODEC_ID_MJPEG, CODEC_ID_MJPEGB, CODEC_ID_LJPEG, CODEC_ID_SP5X, 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_DVAUDIO, CODEC_ID_WMAV1, CODEC_ID_WMAV2, CODEC_ID_MACE3, CODEC_ID_MACE6, CODEC_ID_HUFFYUV, CODEC_ID_CYUV, CODEC_ID_H264, CODEC_ID_INDEO3, CODEC_ID_VP3, CODEC_ID_THEORA, CODEC_ID_AAC, CODEC_ID_MPEG4AAC, 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_VMDAUDIO, CODEC_ID_MSZH, CODEC_ID_ZLIB, CODEC_ID_QTRLE, /* various pcm "codecs" */ CODEC_ID_PCM_S16LE, 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, /* various adpcm codecs */ CODEC_ID_ADPCM_IMA_QT, 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, /* AMR */ CODEC_ID_AMR_NB, CODEC_ID_AMR_WB, /* RealAudio codecs*/ CODEC_ID_RA_144, CODEC_ID_RA_288, /* various DPCM codecs */ CODEC_ID_ROQ_DPCM, CODEC_ID_INTERPLAY_DPCM, CODEC_ID_XAN_DPCM, CODEC_ID_FLAC, CODEC_ID_MPEG2TS, /* _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, }; /** * Pixel format. Notes: * * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA * color is put together as: * (A << 24) | (R << 16) | (G << 8) | B * This is stored as BGRA on little endian CPU architectures and ARGB on * big endian CPUs. * * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized * image data is stored in AVFrame.data[0]. The palette is transported in * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is * also endian-specific). Note also that the individual RGB palette * components stored in AVFrame.data[1] should be in the range 0..255. * This is important as many custom PAL8 video codecs that were designed * to run on the IBM VGA graphics adapter use 6-bit palette components. */ enum PixelFormat { PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples) PIX_FMT_YUV422, PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB... PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR... PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples) PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples) PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples) PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples) PIX_FMT_RGB565, ///< always stored in cpu endianness PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1 PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, ///< 0 is white PIX_FMT_MONOBLACK, ///< 0 is black PIX_FMT_PAL8, ///< 8 bit with RGBA palette PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg) PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg) PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg) PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h) PIX_FMT_XVMC_MPEG2_IDCT, PIX_FMT_NB, }; /* currently unused, may be used if 24/32 bits samples ever supported */ enum SampleFormat { SAMPLE_FMT_S16 = 0, ///< signed 16 bits }; /* in bytes */ #define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072 /** * 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 /* motion estimation type, EPZS by default */ enum Motion_Est_ID { ME_ZERO = 1, ME_FULL, ME_LOG, ME_PHODS, ME_EPZS, ME_X1 }; 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 8 /* encoding support these flags can be passed in AVCodecContext.flags before initing Note: 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///< dont 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 /* 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 */ #define CODEC_CAP_DELAY 0x0020 //the following defines might change, so dont expect compatibility if u 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 isnt 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 AV_TIME_BASE (=micro seconds currently) (time when frame should be shown to user) * if AV_NOPTS_VALUE then the frame_rate will be used as reference * - 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 * - 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; /** * Macroblock size: (0->16x16, 1->8x8, 2-> 4x4, 3-> 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_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 somewher else, dont dealloc image (data/base), all other tables are not shared #define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont 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 */ }; /** * 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. * - 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) * - encoding: set/allocated/freed by lavc. * - decoding: set/allocated/freed by user. */ void *extradata; int extradata_size; /* video only */ /** * frames per sec multiplied by frame_rate_base. * for variable fps this is the precission, so if the timestamps * can be specified in msec precssion then this is 1000*frame_rate_base * - encoding: MUST be set by user * - decoding: set by lavc. 0 or the frame_rate if available */ int frame_rate; /** * width / height. * - encoding: MUST be set by user. * - decoding: set by user if known, codec should override / dynamically change if needed */ 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: FIXME: used by ffmpeg to decide whether an pix_fmt * conversion is in order. This only works for * codecs with one supported pix_fmt, we should * do something for a generic case as well. * - 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; int sample_fmt; ///< sample format, currenly unused /* the following data should not be initialized */ int frame_size; ///< in samples, initialized when calling 'init' 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; int b_frame_strategy; /** * hurry up amount. * - 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 callcack: This function is called */ /* every time the encoder as a packet to send */ /* Depends on the encoder if the data starts */ /* with a Start Code (it should) H.263 does */ void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int packet_number); /* 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: unused * - 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_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; /** * 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_CAREFULL 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; int block_align; ///< used by some WAV based audio codecs 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 /** * 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 */ #endif /* HAVE_MMX */ /** * 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: set by user. * - decoding: unused */ int mb_qmin; /** * maximum MB quantizer. * - encoding: set by user. * - 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_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; /** * frame_rate_base. * for variable fps this is 1 * - encoding: set by user. * - decoding: set by lavc. * @todo move this after frame_rate */ int frame_rate_base; /** * 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. * Dont touch, used by lavc default_get_buffer() */ int internal_buffer_count; /** * internal_buffers. * Dont 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; /** * 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 skiped. * - encoding: unused * - decoding: set by user */ int skip_top; /** * number of macroblock rows at the bottom which are skiped. * - encoding: unused * - decoding: set by user */ int skip_bottom; } AVCodecContext; /** * AVOption. */ typedef struct AVOption { /** options' name */ const char *name; /* if name is NULL, it indicates a link to next */ /** short English text help or const struct AVOption* subpointer */ const char *help; // const struct AVOption* sub; /** offset to context structure where the parsed value should be stored */ int offset; /** options' type */ int type; #define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence) #define FF_OPT_TYPE_DOUBLE 2 ///< double #define FF_OPT_TYPE_INT 3 ///< integer #define FF_OPT_TYPE_STRING 4 ///< string (finished with ) #define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags //#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option #define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40) #define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80) /** min value (min == max -> no limits) */ double min; /** maximum value for double/int */ double max; /** default boo [0,1]l/double/int value */ double defval; /** * default string value (with optional semicolon delimited extra option-list * i.e. option1;option2;option3 * defval might select other then first argument as default */ const char *defstr; #define FF_OPT_MAX_DEPTH 10 } AVOption; /** * Parse option(s) and sets fields in passed structure * @param strct structure where the parsed results will be written * @param list list with AVOptions * @param opts string with options for parsing */ int avoption_parse(void* strct, const AVOption* list, const char* opts); /** * AVCodec. */ typedef struct AVCodec { const char *name; enum CodecType type; int 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; const AVOption *options; 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; extern AVCodec ac3_encoder; extern AVCodec mp2_encoder; extern AVCodec mp3lame_encoder; extern AVCodec oggvorbis_encoder; extern AVCodec faac_encoder; extern AVCodec mpeg1video_encoder; extern AVCodec mpeg2video_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 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 h264_encoder; extern AVCodec asv1_encoder; extern AVCodec asv2_encoder; extern AVCodec vcr1_encoder; extern AVCodec ffv1_encoder; extern AVCodec mdec_encoder; extern AVCodec zlib_encoder; extern AVCodec svq1_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 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 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 mp2_decoder; extern AVCodec mp3_decoder; extern AVCodec mace3_decoder; extern AVCodec mace6_decoder; extern AVCodec huffyuv_decoder; extern AVCodec oggvorbis_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 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 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 qtrle_decoder; extern AVCodec flac_decoder; /* pcm codecs */ #define PCM_CODEC(id, name) extern AVCodec name ## _decoder; extern AVCodec name ## _encoder 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); #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; /* 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 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); enum PixelFormat avcodec_get_pix_fmt(const char* name); #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); 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_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_close(AVCodecContext *avctx); void avcodec_register_all(void); void avcodec_flush_buffers(AVCodecContext *avctx); /* misc usefull functions */ /** * returns a single letter to describe the picture type */ char av_get_pict_type_char(int pict_type); /** * reduce a fraction. * this is usefull for framerate calculations * @param max the maximum allowed for dst_nom & dst_den * @return 1 if exact, 0 otherwise */ int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max); /** * rescale a 64bit integer. * a simple a*b/c isnt possible as it can overflow */ int64_t av_rescale(int64_t a, int64_t b, int64_t c); /** * Interface for 0.5.0 version * * do not even think about it's usage for this moment */ typedef struct { /// compressed size used from given memory buffer int size; /// I/P/B frame type int frame_type; } avc_enc_result_t; /** * Commands * order can't be changed - once it was defined */ typedef enum { // general commands AVC_OPEN_BY_NAME = 0xACA000, AVC_OPEN_BY_CODEC_ID, AVC_OPEN_BY_FOURCC, AVC_CLOSE, AVC_FLUSH, // pin - struct { uint8_t* src, uint_t src_size } // pout - struct { AVPicture* img, consumed_bytes, AVC_DECODE, // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size } // pout - uint_t used_from_dest_size AVC_ENCODE, // query/get video commands AVC_GET_VERSION = 0xACB000, AVC_GET_WIDTH, AVC_GET_HEIGHT, AVC_GET_DELAY, AVC_GET_QUANT_TABLE, // ... // query/get audio commands AVC_GET_FRAME_SIZE = 0xABC000, // maybe define some simple structure which // might be passed to the user - but they can't // contain any codec specific parts and these // calls are usualy necessary only few times // set video commands AVC_SET_WIDTH = 0xACD000, AVC_SET_HEIGHT, // set video encoding commands AVC_SET_FRAME_RATE = 0xACD800, AVC_SET_QUALITY, AVC_SET_HURRY_UP, // set audio commands AVC_SET_SAMPLE_RATE = 0xACE000, AVC_SET_CHANNELS, } avc_cmd_t; /** * param handle allocated private structure by libavcodec * for initialization pass NULL - will be returned pout * user is supposed to know nothing about its structure * param cmd type of operation to be performed * param pint input parameter * param pout output parameter * * returns command status - eventually for query command it might return * integer resulting value */ int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout); /* 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]; } AVCodecParserContext; typedef struct AVCodecParser { int codec_ids[3]; /* 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); 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); 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 mpegaudio_parser; extern AVCodecParser ac3_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); /* add by bero : in adx.c */ //int is_adx(const unsigned char *buf,size_t bufsize); //Chg by ty int is_adx(const unsigned char *buf,int bufsize);
- void img_copy(AVPicture *dst, const AVPicture *src, int pix_fmt, int width, int height); /* 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 #ifdef __cplusplus } #endif #endif /* AVCODEC_H */
