#ifdef _WINDOWS typedef signed char int8_t; typedef signed short int16_t; typedef signed int int32_t; typedef signed __int64 int64_t; typedef unsigned __int64 uint64_t; #else typedef u_int64_t uint64_t; #endif typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned int uint32_t; typedef int64_t offset_t; #define MAX_STREAMS 20 #define PKT_FLAG_KEY 0x0001 #define AV_TIME_BASE 1000000 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, }; enum CodecType { CODEC_TYPE_UNKNOWN = -1, CODEC_TYPE_VIDEO, CODEC_TYPE_AUDIO, CODEC_TYPE_DATA, }; 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) */ }; typedef struct { unsigned char *buffer; int buffer_size; unsigned char *buf_ptr, *buf_end; void *opaque; int (*read_packet)(void *opaque, uint8_t *buf, int buf_size); void (*write_packet)(void *opaque, uint8_t *buf, int buf_size); int (*seek)(void *opaque, offset_t offset, int whence); offset_t pos; /* position in the file of the current buffer */ int must_flush; /* true if the next seek should flush */ int eof_reached; /* true if eof reached */ int write_flag; /* true if open for writing */ int is_streamed; int max_packet_size; unsigned long checksum; unsigned char *checksum_ptr; unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size); } ByteIOContext; 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 */ }; #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]; 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; typedef struct AVFrame { FF_COMMON_FRAME } AVFrame; 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; typedef struct AVRational{ int num; int den; } AVRational; 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< ('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; typedef struct AVFrac { int64_t val, num, den; } AVFrac; typedef struct AVIndexEntry { int64_t pos; int64_t timestamp; #define AVINDEX_KEYFRAME 0x0001 /* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed */ int flags; int min_distance; /* min distance between this and the previous keyframe, used to avoid unneeded searching */ } AVIndexEntry; typedef struct AVStream { int index; /* stream index in AVFormatContext */ int id; /* format specific stream id */ AVCodecContext codec; /* codec context */ int r_frame_rate; /* real frame rate of the stream */ int r_frame_rate_base;/* real frame rate base of the stream */ void *priv_data; /* internal data used in av_find_stream_info() */ int64_t codec_info_duration; int codec_info_nb_frames; /* encoding: PTS generation when outputing stream */ AVFrac pts; AVRational time_base; int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */ /* ffmpeg.c private use */ int stream_copy; /* if TRUE, just copy stream */ /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame * MN:dunno if thats the right place, for it */ float quality; /* decoding: position of the first frame of the component, in AV_TIME_BASE fractional seconds. */ int64_t start_time; /* decoding: duration of the stream, in AV_TIME_BASE fractional seconds. */ int64_t duration; /* av_read_frame() support */ int need_parsing; struct AVCodecParserContext *parser; int64_t cur_dts; int last_IP_duration; int64_t last_IP_pts; /* av_seek_frame() support */ AVIndexEntry *index_entries; /* only used if the format does not support seeking natively */ int nb_index_entries; int index_entries_allocated_size; } AVStream; typedef struct AVPacket { int64_t pts; /* presentation time stamp in AV_TIME_BASE units (or pts_den units in muxers or demuxers) */ int64_t dts; /* decompression time stamp in AV_TIME_BASE units (or pts_den units in muxers or demuxers) */ uint8_t *data; int size; int stream_index; int flags; int duration; /* presentation duration (0 if not available) */ void (*destruct)(struct AVPacket *); void *priv; } AVPacket; typedef struct AVFormatContext { AVClass *av_class; /* set by av_alloc_format_context */ /* can only be iformat or oformat, not both at the same time */ struct AVInputFormat *iformat; struct AVOutputFormat *oformat; void *priv_data; ByteIOContext pb; int nb_streams; AVStream *streams[MAX_STREAMS]; char filename[1024]; /* input or output filename */ /* stream info */ int64_t timestamp; char title[512]; char author[512]; char copyright[512]; char comment[512]; char album[512]; int year; /* ID3 year, 0 if none */ int track; /* track number, 0 if none */ char genre[32]; /* ID3 genre */ int ctx_flags; /* format specific flags, see AVFMTCTX_xx */ /* private data for pts handling (do not modify directly) */ /* This buffer is only needed when packets were already buffered but not decoded, for example to get the codec parameters in mpeg streams */ struct AVPacketList *packet_buffer; /* decoding: position of the first frame of the component, in AV_TIME_BASE fractional seconds. NEVER set this value directly: it is deduced from the AVStream values. */ int64_t start_time; /* decoding: duration of the stream, in AV_TIME_BASE fractional seconds. NEVER set this value directly: it is deduced from the AVStream values. */ int64_t duration; /* decoding: total file size. 0 if unknown */ int64_t file_size; /* decoding: total stream bitrate in bit/s, 0 if not available. Never set it directly if the file_size and the duration are known as ffmpeg can compute it automatically. */ int bit_rate; /* av_read_frame() support */ AVStream *cur_st; const uint8_t *cur_ptr; int cur_len; AVPacket cur_pkt; /* av_seek_frame() support */ int64_t data_offset; /* offset of the first packet */ int index_built; } AVFormatContext; 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 \0) #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; 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; typedef struct AVProbeData { const char *filename; unsigned char *buf; int buf_size; } AVProbeData; typedef struct AVFormatParameters { int frame_rate; int frame_rate_base; int sample_rate; int channels; int width; int height; enum PixelFormat pix_fmt; struct AVImageFormat *image_format; int channel; /* used to select dv channel */ const char *device; /* video4linux, audio or DV device */ const char *standard; /* tv standard, NTSC, PAL, SECAM */ int mpeg2ts_raw:1; /* force raw MPEG2 transport stream output, if possible */ int mpeg2ts_compute_pcr:1; /* compute exact PCR for each transport stream packet (only meaningful if mpeg2ts_raw is TRUE */ int initial_pause:1; /* do not begin to play the stream immediately (RTSP only) */ } AVFormatParameters; typedef struct AVInputFormat { const char *name; const char *long_name; /* size of private data so that it can be allocated in the wrapper */ int priv_data_size; /* tell if a given file has a chance of being parsing by this format */ int (*read_probe)(AVProbeData *); /* read the format header and initialize the AVFormatContext structure. Return 0 if OK. 'ap' if non NULL contains additionnal paramters. Only used in raw format right now. 'av_new_stream' should be called to create new streams. */ int (*read_header)(struct AVFormatContext *, AVFormatParameters *ap); /* read one packet and put it in 'pkt'. pts and flags are also set. 'av_new_stream' can be called only if the flag AVFMTCTX_NOHEADER is used. */ int (*read_packet)(struct AVFormatContext *, AVPacket *pkt); /* close the stream. The AVFormatContext and AVStreams are not freed by this function */ int (*read_close)(struct AVFormatContext *); /* seek at or before a given timestamp (given in AV_TIME_BASE units) relative to the frames in stream component stream_index */ int (*read_seek)(struct AVFormatContext *, int stream_index, int64_t timestamp); /** * gets the next timestamp in AV_TIME_BASE units. */ int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index, int64_t *pos, int64_t pos_limit); /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */ int flags; /* if extensions are defined, then no probe is done. You should usually not use extension format guessing because it is not reliable enough */ const char *extensions; /* general purpose read only value that the format can use */ int value; /* start/resume playing - only meaningful if using a network based format (RTSP) */ int (*read_play)(struct AVFormatContext *); /* pause playing - only meaningful if using a network based format (RTSP) */ int (*read_pause)(struct AVFormatContext *); /* private fields */ struct AVInputFormat *next; } AVInputFormat; typedef struct AVPicture { uint8_t *data[4]; int linesize[4]; ///< number of bytes per line } AVPicture; static inline void av_free_packet(AVPacket *pkt) { if (pkt && pkt->destruct) { pkt->destruct(pkt); } }