#ifndef AVCODEC_H #define AVCODEC_H /** * @file avcodec.h * external api header. */ #ifdef __cplusplus extern "C" { #endif #include "common.h" #define LIBAVCODEC_VERSION_INT 0x000406 #define LIBAVCODEC_VERSION "0.4.6" #define LIBAVCODEC_BUILD 4663 #define LIBAVCODEC_BUILD_STR "4663" #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" LIBAVCODEC_BUILD_STR enum CodecID { CODEC_ID_NONE, CODEC_ID_MPEG1VIDEO, CODEC_ID_H263, CODEC_ID_RV10, CODEC_ID_MP2, CODEC_ID_MP3LAME, CODEC_ID_VORBIS, CODEC_ID_AC3, CODEC_ID_MJPEG, CODEC_ID_MJPEGB, 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_SVQ1, CODEC_ID_DVVIDEO, CODEC_ID_DVAUDIO, CODEC_ID_WMAV1, CODEC_ID_WMAV2, CODEC_ID_MACE3, CODEC_ID_MACE6, CODEC_ID_HUFFYUV, CODEC_ID_CYUV, /* 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_MS, }; enum CodecType { CODEC_TYPE_UNKNOWN = -1, CODEC_TYPE_VIDEO, CODEC_TYPE_AUDIO, }; /** * Pixel format. */ enum PixelFormat { PIX_FMT_YUV420P, PIX_FMT_YUV422, PIX_FMT_RGB24, ///< 3 bytes, R is first PIX_FMT_BGR24, ///< 3 bytes, B is first PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_RGBA32, ///< always stored in cpu endianness PIX_FMT_YUV410P, PIX_FMT_YUV411P, 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_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 zero bytes at the end of the input bitstream for decoding. * to avoid overreading (and possibly segfaulting) */ #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; /* ME algos sorted by quality */ static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG, ME_X1, ME_EPZS, ME_FULL }; #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_HQ 0x0001 ///< brute force MB-type decission mode (slow) #define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed #define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC #define CODEC_FLAG_GMC 0x0020 ///< use GMC #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 / will fail on b frames #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 ///< Advanced intra coding #define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector /* For advanced prediction mode, we reuse the 4MV flag */ /* Unsupported options : * Syntax Arithmetic coding (SAC) * Deblocking filter internal loop * Slice structured * Reference Picture Selection * Independant Segment Decoding * Alternative Inter * VLC * Modified Quantization */ /* /Fx */ /* codec capabilities */ #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback #define CODEC_CAP_DR1 0x0002 ///< direct rendering method 1 /* if 'parse_only' field is true, then avcodec_parse_frame() can be used */ #define CODEC_CAP_PARSE_ONLY 0x0004 #define CODEC_CAP_TRUNCATED 0x0008 #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 micro seconds (time when frame should be shown to user)\ * if 0 then the frame_rate will be used as reference\ * - encoding: MUST be set by user\ * - decoding: set by lavc\ */\ long long int 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 31 (bad)) \ * - encoding: set by lavc for coded_picture (and set by user for input)\ * - decoding: set by lavc\ */\ float quality; \ \ /**\ * buffer age (1->was last buffer and dint change, 2->..., ...).\ * set to something large 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;\ \ /**\ * 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; #define FF_BUFFER_TYPE_INTERNAL 1 #define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers #define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc #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 typedef struct AVFrame { FF_COMMON_FRAME } AVFrame; #define DEFAULT_FRAME_RATE_BASE 1001000 /** * main external api structure. */ typedef struct AVCodecContext { /** * 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, some codecs might override / change it during playback */ int width, height; #define FF_ASPECT_SQUARE 1 #define FF_ASPECT_4_3_625 2 #define FF_ASPECT_4_3_525 3 #define FF_ASPECT_16_9_625 4 #define FF_ASPECT_16_9_525 5 #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: unused * - 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. */ void (*draw_horiz_band)(struct AVCodecContext *s, uint8_t **src_ptr, int linesize, int y, int width, 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; /* The following data is for RTP friendly coding */ /* By now only H.263/H.263+/MPEG4 coder honours this */ int rtp_mode; /* 1 for activate RTP friendly-mode */ /* highers numbers represent more error-prone */ /* enviroments, by now just "1" exist */ 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)(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: unused * - 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_AC_VLC 32 #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_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 * - 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); /** * is 1 if the decoded stream contains b frames, 0 otherwise. * - encoding: unused * - 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. * - encoding: set by user. * - decoding: unused */ float i_quant_factor; /** * qscale offset 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_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 /** * 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 /** * 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 /** * aspect ratio (0 if unknown). * - encoding: set by user. * - decoding: set by lavc. */ float 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_VIS_MV 0x00000040 #define FF_DEBUG_SKIP 0x00000080 #define FF_DEBUG_STARTCODE 0x00000100 #define FF_DEBUG_PTS 0x00000200 #define FF_DEBUG_ER 0x00000400 /** * 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; #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_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, 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; } 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 \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; /** * 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; int 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; } AVCodec; /** * four components are given, that's all. * the last component is alpha */ typedef struct AVPicture { uint8_t *data[4]; int linesize[4]; } AVPicture; extern AVCodec ac3_encoder; extern AVCodec mp2_encoder; extern AVCodec mp3lame_encoder; extern AVCodec oggvorbis_encoder; extern AVCodec mpeg1video_encoder; extern AVCodec h263_encoder; extern AVCodec h263p_encoder; extern AVCodec rv10_encoder; extern AVCodec mjpeg_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 h263_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 mpeg_decoder; extern AVCodec h263i_decoder; extern AVCodec rv10_decoder; extern AVCodec svq1_decoder; extern AVCodec dvvideo_decoder; extern AVCodec dvaudio_decoder; extern AVCodec wmav1_decoder; extern AVCodec wmav2_decoder; extern AVCodec mjpeg_decoder; extern AVCodec mjpegb_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; /* 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_MS, adpcm_ms); #undef PCM_CODEC /* dummy raw video codec */ extern AVCodec rawvideo_codec; /* the following codecs use external GPL libs */ extern AVCodec ac3_decoder; /* resample.c */ struct ReSampleContext; 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); /* 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); void img_resample(ImgReSampleContext *s, AVPicture *output, AVPicture *input); void img_resample_close(ImgReSampleContext *s); int avpicture_fill(AVPicture *picture, uint8_t *ptr, int pix_fmt, int width, int height); 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); /* convert among pixel formats */ int img_convert(AVPicture *dst, int dst_pix_fmt, AVPicture *src, int pix_fmt, int width, int height); /* deinterlace a picture */ int avpicture_deinterlace(AVPicture *dst, 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); 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_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 */ /** * 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, int b, int 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); /* 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); #define av_freep(p) __av_freep((void **)(p)) 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(void** location, unsigned int size); #define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s) #ifdef __cplusplus } #endif #endif /* AVCODEC_H */