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ffmpeg / libavcodec / options.c @ 85770f2a

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/*
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 * Copyright (c) 2001 Fabrice Bellard
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 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file
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 * Options definition for AVCodecContext.
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 */
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#include "avcodec.h"
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#include "libavutil/opt.h"
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#include <float.h>              /* FLT_MIN, FLT_MAX */
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static const char* context_to_name(void* ptr) {
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    AVCodecContext *avc= ptr;
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    if(avc && avc->codec && avc->codec->name)
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        return avc->codec->name;
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    else
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        return "NULL";
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}
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#define OFFSET(x) offsetof(AVCodecContext,x)
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#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
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//these names are too long to be readable
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#define V AV_OPT_FLAG_VIDEO_PARAM
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#define A AV_OPT_FLAG_AUDIO_PARAM
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#define S AV_OPT_FLAG_SUBTITLE_PARAM
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#define E AV_OPT_FLAG_ENCODING_PARAM
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#define D AV_OPT_FLAG_DECODING_PARAM
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#define AV_CODEC_DEFAULT_BITRATE 200*1000
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static const AVOption options[]={
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{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, {.i64 = AV_CODEC_DEFAULT_BITRATE }, INT_MIN, INT_MAX, V|E},
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{"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, {.i64 = 64*1000 }, INT_MIN, INT_MAX, A|E},
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{"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, {.i64 = AV_CODEC_DEFAULT_BITRATE*20 }, 1, INT_MAX, V|E},
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{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, {.i64 = DEFAULT }, 0, UINT_MAX, V|A|E|D, "flags"},
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{"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_4MV }, INT_MIN, INT_MAX, V|E, "flags"},
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{"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_OBMC }, INT_MIN, INT_MAX, V|E, "flags"},
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{"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_QPEL }, INT_MIN, INT_MAX, V|E, "flags"},
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{"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_LOOP_FILTER }, INT_MIN, INT_MAX, V|E, "flags"},
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{"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_QSCALE }, INT_MIN, INT_MAX, 0, "flags"},
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{"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_GMC }, INT_MIN, INT_MAX, V|E, "flags"},
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{"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_MV0 }, INT_MIN, INT_MAX, V|E, "flags"},
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{"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_PART }, INT_MIN, INT_MAX, V|E, "flags"},
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{"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_INPUT_PRESERVED }, INT_MIN, INT_MAX, 0, "flags"},
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{"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_PASS1 }, INT_MIN, INT_MAX, 0, "flags"},
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{"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_PASS2 }, INT_MIN, INT_MAX, 0, "flags"},
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{"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_EXTERN_HUFF }, INT_MIN, INT_MAX, 0, "flags"},
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{"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_GRAY }, INT_MIN, INT_MAX, V|E|D, "flags"},
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{"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_EMU_EDGE }, INT_MIN, INT_MAX, 0, "flags"},
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{"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_PSNR }, INT_MIN, INT_MAX, V|E, "flags"},
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{"truncated", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_TRUNCATED }, INT_MIN, INT_MAX, 0, "flags"},
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{"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_NORMALIZE_AQP }, INT_MIN, INT_MAX, V|E, "flags"},
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{"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_INTERLACED_DCT }, INT_MIN, INT_MAX, V|E, "flags"},
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{"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_LOW_DELAY }, INT_MIN, INT_MAX, V|D|E, "flags"},
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{"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_ALT_SCAN }, INT_MIN, INT_MAX, V|E, "flags"},
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{"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_GLOBAL_HEADER }, INT_MIN, INT_MAX, V|A|E, "flags"},
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{"bitexact", "use only bitexact stuff (except (i)dct)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_BITEXACT }, INT_MIN, INT_MAX, A|V|S|D|E, "flags"},
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{"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_AC_PRED }, INT_MIN, INT_MAX, V|E, "flags"},
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{"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_H263P_UMV }, INT_MIN, INT_MAX, V|E, "flags"},
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{"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_CBP_RD }, INT_MIN, INT_MAX, V|E, "flags"},
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{"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_QP_RD }, INT_MIN, INT_MAX, V|E, "flags"},
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{"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_H263P_AIV }, INT_MIN, INT_MAX, V|E, "flags"},
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{"slice", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_H263P_SLICE_STRUCT }, INT_MIN, INT_MAX, V|E, "flags"},
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{"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_INTERLACED_ME }, INT_MIN, INT_MAX, V|E, "flags"},
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{"scan_offset", "will reserve space for svcd scan offset user data", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_SVCD_SCAN_OFFSET }, INT_MIN, INT_MAX, V|E, "flags"},
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{"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG_CLOSED_GOP }, INT_MIN, INT_MAX, V|E, "flags"},
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{"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_FAST }, INT_MIN, INT_MAX, V|E, "flags2"},
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{"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_STRICT_GOP }, INT_MIN, INT_MAX, V|E, "flags2"},
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{"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_NO_OUTPUT }, INT_MIN, INT_MAX, V|E, "flags2"},
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{"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_LOCAL_HEADER }, INT_MIN, INT_MAX, V|E, "flags2"},
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{"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, {.i64 = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method"},
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{"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, {.i64 = ME_ZERO }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, {.i64 = ME_FULL }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, {.i64 = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"esa", "esa motion estimation (alias for full)", 0, FF_OPT_TYPE_CONST, {.i64 = ME_FULL }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"tesa", "tesa motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_TESA }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"dia", "dia motion estimation (alias for epzs)", 0, FF_OPT_TYPE_CONST, {.i64 = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_LOG }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_PHODS }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_X1 }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_HEX }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_UMH }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, {.i64 = ME_ITER }, INT_MIN, INT_MAX, V|E, "me_method" },
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{"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, {.q = {0, 1}}, INT_MIN, INT_MAX},
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{"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, {.i64 = 12 }, INT_MIN, INT_MAX, V|E},
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{"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, A|E},
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{"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, A|E},
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{"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -FLT_MAX, FLT_MAX, V|E},
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{"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, {.dbl = 0.5 }, 0, FLT_MAX, V|E},
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{"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, {.i64 = 2 }, 0, 69, V|E},
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{"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, {.i64 = 31 }, 0, 69, V|E},
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{"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, {.i64 = 3 }, INT_MIN, INT_MAX, V|E},
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{"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, FF_MAX_B_FRAMES, V|E},
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{"b_qfactor", "qp factor between p and b frames", OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, {.dbl = 1.25 }, -FLT_MAX, FLT_MAX, V|E},
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{"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, V|E},
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{"wpredp", "weighted prediction analysis method", OFFSET(weighted_p_pred), FF_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, V|E},
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{"ps", "rtp payload size in bytes", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, {.i64 = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},
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{"autodetect", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},
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{"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_OLD_MSMPEG4 }, INT_MIN, INT_MAX, V|D, "bug"},
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{"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_XVID_ILACE }, INT_MIN, INT_MAX, V|D, "bug"},
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{"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_UMP4 }, INT_MIN, INT_MAX, V|D, "bug"},
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{"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_NO_PADDING }, INT_MIN, INT_MAX, V|D, "bug"},
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{"amv", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_AMV }, INT_MIN, INT_MAX, V|D, "bug"},
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{"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_AC_VLC }, INT_MIN, INT_MAX, V|D, "bug"},
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{"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_QPEL_CHROMA }, INT_MIN, INT_MAX, V|D, "bug"},
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{"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_STD_QPEL }, INT_MIN, INT_MAX, V|D, "bug"},
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{"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_QPEL_CHROMA2 }, INT_MIN, INT_MAX, V|D, "bug"},
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{"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_DIRECT_BLOCKSIZE }, INT_MIN, INT_MAX, V|D, "bug"},
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{"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_EDGE }, INT_MIN, INT_MAX, V|D, "bug"},
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{"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_HPEL_CHROMA }, INT_MIN, INT_MAX, V|D, "bug"},
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{"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_DC_CLIP }, INT_MIN, INT_MAX, V|D, "bug"},
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{"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_MS }, INT_MIN, INT_MAX, V|D, "bug"},
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{"trunc", "trancated frames", 0, FF_OPT_TYPE_CONST, {.i64 = FF_BUG_TRUNCATED}, INT_MIN, INT_MAX, V|D, "bug"},
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{"lelim", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"celim", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, A|V|D|E, "strict"},
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{"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_VERY_STRICT }, INT_MIN, INT_MAX, V|D|E, "strict"},
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{"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_STRICT }, INT_MIN, INT_MAX, V|D|E, "strict"},
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{"normal", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_NORMAL }, INT_MIN, INT_MAX, V|D|E, "strict"},
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{"unofficial", "allow unofficial extensions", 0, FF_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_UNOFFICIAL }, INT_MIN, INT_MAX, V|D|E, "strict"},
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{"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_EXPERIMENTAL }, INT_MIN, INT_MAX, V|D|E, "strict"},
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{"b_qoffset", "qp offset between P and B frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, {.dbl = 1.25 }, -FLT_MAX, FLT_MAX, V|E},
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{"er", "set error detection aggressivity", OFFSET(error_recognition), FF_OPT_TYPE_INT, {.i64 = FF_ER_CAREFUL }, INT_MIN, INT_MAX, A|V|D, "er"},
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{"careful", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_ER_CAREFUL }, INT_MIN, INT_MAX, V|D, "er"},
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{"compliant", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_ER_COMPLIANT }, INT_MIN, INT_MAX, V|D, "er"},
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{"aggressive", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_ER_AGGRESSIVE }, INT_MIN, INT_MAX, V|D, "er"},
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{"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_ER_VERY_AGGRESSIVE }, INT_MIN, INT_MAX, V|D, "er"},
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{"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX},
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{"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX},
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{"qsquish", "how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)", OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 99, V|E},
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{"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, -FLT_MAX, FLT_MAX, V|E},
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{"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
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{"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, V|E},
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{"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
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{"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, A|V|E},
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{"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, V|E},
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{"i_qfactor", "qp factor between P and I frames", OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, {.dbl = -0.8 }, -FLT_MAX, FLT_MAX, V|E},
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{"i_qoffset", "qp offset between P and I frames", OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, {.dbl = 0.0 }, -FLT_MAX, FLT_MAX, V|E},
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{"rc_init_cplx", "initial complexity for 1-pass encoding", OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, -FLT_MAX, FLT_MAX, V|E},
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{"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E, "dct"},
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{"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, "dct"},
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{"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, "dct"},
187
{"int", "accurate integer", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, "dct"},
188
{"mmx", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, "dct"},
189
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_MLIB }, INT_MIN, INT_MAX, V|E, "dct"},
190
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, "dct"},
191
{"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, "dct"},
192
{"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},
193
{"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},
194
{"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},
195
{"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},
196
{"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},
197
{"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|E|D, "idct"},
198
{"auto", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, "idct"},
199
{"int", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, "idct"},
200
{"simple", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, "idct"},
201
{"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, "idct"},
202
{"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_LIBMPEG2MMX }, INT_MIN, INT_MAX, V|E|D, "idct"},
203
{"ps2", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_PS2 }, INT_MIN, INT_MAX, V|E|D, "idct"},
204
{"mlib", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_MLIB }, INT_MIN, INT_MAX, V|E|D, "idct"},
205
{"arm", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, "idct"},
206
{"altivec", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, "idct"},
207
{"sh4", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SH4 }, INT_MIN, INT_MAX, V|E|D, "idct"},
208
{"simplearm", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"},
209
{"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"},
210
{"simplearmv6", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"},
211
{"simpleneon", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"},
212
{"simplealpha", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_SIMPLEALPHA }, INT_MIN, INT_MAX, V|E|D, "idct"},
213
{"h264", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_H264 }, INT_MIN, INT_MAX, V|E|D, "idct"},
214
{"vp3", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_VP3 }, INT_MIN, INT_MAX, V|E|D, "idct"},
215
{"ipp", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_IPP }, INT_MIN, INT_MAX, V|E|D, "idct"},
216
{"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_XVIDMMX }, INT_MIN, INT_MAX, V|E|D, "idct"},
217
{"faani", "floating point AAN IDCT", 0, FF_OPT_TYPE_CONST, {.i64 = FF_IDCT_FAAN }, INT_MIN, INT_MAX, V|D|E, "idct"},
218
{"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
219
{"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, {.i64 = 3 }, INT_MIN, INT_MAX, V|D, "ec"},
220
{"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_EC_GUESS_MVS }, INT_MIN, INT_MAX, V|D, "ec"},
221
{"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, {.i64 = FF_EC_DEBLOCK }, INT_MIN, INT_MAX, V|D, "ec"},
222
{"bits_per_coded_sample", NULL, OFFSET(bits_per_coded_sample), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
223
{"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "pred"},
224
{"left", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PRED_LEFT }, INT_MIN, INT_MAX, V|E, "pred"},
225
{"plane", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PRED_PLANE }, INT_MIN, INT_MAX, V|E, "pred"},
226
{"median", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PRED_MEDIAN }, INT_MIN, INT_MAX, V|E, "pred"},
227
{"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, {.q = {0, 1}}, 0, 10, V|E},
228
{"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, {.i64 = DEFAULT }, 0, INT_MAX, V|A|S|E|D, "debug"},
229
{"pict", "picture info", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_PICT_INFO }, INT_MIN, INT_MAX, V|D, "debug"},
230
{"rc", "rate control", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_RC }, INT_MIN, INT_MAX, V|E, "debug"},
231
{"bitstream", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_BITSTREAM }, INT_MIN, INT_MAX, V|D, "debug"},
232
{"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_MB_TYPE }, INT_MIN, INT_MAX, V|D, "debug"},
233
{"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_QP }, INT_MIN, INT_MAX, V|D, "debug"},
234
{"mv", "motion vector", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_MV }, INT_MIN, INT_MAX, V|D, "debug"},
235
{"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_DCT_COEFF }, INT_MIN, INT_MAX, V|D, "debug"},
236
{"skip", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_SKIP }, INT_MIN, INT_MAX, V|D, "debug"},
237
{"startcode", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_STARTCODE }, INT_MIN, INT_MAX, V|D, "debug"},
238
{"pts", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_PTS }, INT_MIN, INT_MAX, V|D, "debug"},
239
{"er", "error recognition", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_ER }, INT_MIN, INT_MAX, V|D, "debug"},
240
{"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_MMCO }, INT_MIN, INT_MAX, V|D, "debug"},
241
{"bugs", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_BUGS }, INT_MIN, INT_MAX, V|D, "debug"},
242
{"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_VIS_QP }, INT_MIN, INT_MAX, V|D, "debug"},
243
{"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_VIS_MB_TYPE }, INT_MIN, INT_MAX, V|D, "debug"},
244
{"buffers", "picture buffer allocations", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_BUFFERS }, INT_MIN, INT_MAX, V|D, "debug"},
245
{"thread_ops", "threading operations", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_THREADS }, INT_MIN, INT_MAX, V|D, "debug"},
246
{"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, V|D, "debug_mv"},
247
{"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_VIS_MV_P_FOR }, INT_MIN, INT_MAX, V|D, "debug_mv"},
248
{"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_VIS_MV_B_FOR }, INT_MIN, INT_MAX, V|D, "debug_mv"},
249
{"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, {.i64 = FF_DEBUG_VIS_MV_B_BACK }, INT_MIN, INT_MAX, V|D, "debug_mv"},
250
{"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
251
{"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
252
{"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
253
{"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
254
{"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
255
{"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
256
{"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
257
{"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
258
{"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_SAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
259
{"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_SSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},
260
{"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_SATD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
261
{"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_DCT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
262
{"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_PSNR }, INT_MIN, INT_MAX, V|E, "cmp_func"},
263
{"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_BIT }, INT_MIN, INT_MAX, V|E, "cmp_func"},
264
{"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_RD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
265
{"zero", "0", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_ZERO }, INT_MIN, INT_MAX, V|E, "cmp_func"},
266
{"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_VSAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},
267
{"vsse", "sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_VSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},
268
{"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_NSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},
269
#if CONFIG_SNOW_ENCODER
270
{"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_W53 }, INT_MIN, INT_MAX, V|E, "cmp_func"},
271
{"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_W97 }, INT_MIN, INT_MAX, V|E, "cmp_func"},
272
#endif
273
{"dctmax", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, V|E, "cmp_func"},
274
{"chroma", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_CMP_CHROMA }, INT_MIN, INT_MAX, V|E, "cmp_func"},
275
{"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
276
{"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, {.i64 = 8 }, INT_MIN, INT_MAX, V|E},
277
{"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
278
{"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
279
{"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, V|E},
280
{"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, V|E},
281
{"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
282
{"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
283
{"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
284
{"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "coder"},
285
{"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CODER_TYPE_VLC }, INT_MIN, INT_MAX, V|E, "coder"},
286
{"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CODER_TYPE_AC }, INT_MIN, INT_MAX, V|E, "coder"},
287
{"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CODER_TYPE_RAW }, INT_MIN, INT_MAX, V|E, "coder"},
288
{"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CODER_TYPE_RLE }, INT_MIN, INT_MAX, V|E, "coder"},
289
{"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, {.i64 = FF_CODER_TYPE_DEFLATE }, INT_MIN, INT_MAX, V|E, "coder"},
290
{"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
291
{"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
292
{"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
293
{"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "mbd"},
294
{"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, {.i64 = FF_MB_DECISION_SIMPLE }, INT_MIN, INT_MAX, V|E, "mbd"},
295
{"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, {.i64 = FF_MB_DECISION_BITS }, INT_MIN, INT_MAX, V|E, "mbd"},
296
{"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, {.i64 = FF_MB_DECISION_RD }, INT_MIN, INT_MAX, V|E, "mbd"},
297
{"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
298
{"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
299
{"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, {.i64 =  2*FF_QP2LAMBDA }, 0, INT_MAX, V|E},
300
{"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, V|E},
301
{"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
302
{"rc_init_occupancy", "number of bits which should be loaded into the rc buffer before decoding starts", OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
303
{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
304
{"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, {.i64 = CODEC_FLAG2_FASTPSKIP|CODEC_FLAG2_BIT_RESERVOIR|CODEC_FLAG2_PSY|CODEC_FLAG2_MBTREE }, 0, UINT_MAX, V|A|E|D, "flags2"},
305
{"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
306
#if FF_API_ANTIALIAS_ALGO
307
{"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|D, "aa"},
308
#endif
309
{"auto", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_AA_AUTO }, INT_MIN, INT_MAX, V|D, "aa"},
310
{"fastint", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_AA_FASTINT }, INT_MIN, INT_MAX, V|D, "aa"},
311
{"int", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_AA_INT }, INT_MIN, INT_MAX, V|D, "aa"},
312
{"float", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_AA_FLOAT }, INT_MIN, INT_MAX, V|D, "aa"},
313
{"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
314
{"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, {.i64 = 1 }, INT_MIN, INT_MAX, V|E|D},
315
{"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
316
{"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
317
{"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, V|E},
318
{"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, {.i64 = 8 }, INT_MIN, INT_MAX, V|E},
319
{"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|D},
320
{"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|D},
321
{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, {.i64 = FF_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "profile"},
322
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "profile"},
323
{"aac_main", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_MAIN }, INT_MIN, INT_MAX, A|E, "profile"},
324
{"aac_low", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_LOW }, INT_MIN, INT_MAX, A|E, "profile"},
325
{"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_SSR }, INT_MIN, INT_MAX, A|E, "profile"},
326
{"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_AAC_LTP }, INT_MIN, INT_MAX, A|E, "profile"},
327
{"dts", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS }, INT_MIN, INT_MAX, A|E, "profile"},
328
{"dts_es", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_ES }, INT_MIN, INT_MAX, A|E, "profile"},
329
{"dts_96_24", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_96_24 }, INT_MIN, INT_MAX, A|E, "profile"},
330
{"dts_hd_hra", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_HD_HRA }, INT_MIN, INT_MAX, A|E, "profile"},
331
{"dts_hd_ma", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_PROFILE_DTS_HD_MA }, INT_MIN, INT_MAX, A|E, "profile"},
332
{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, {.i64 = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "level"},
333
{"unknown", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "level"},
334
{"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, V|A|D},
335
{"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
336
{"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
337
{"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
338
{"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, {.i64 = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, V|E, "cmp_func"},
339
{"border_mask", "increases the quantizer for macroblocks close to borders", OFFSET(border_masking), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, -FLT_MAX, FLT_MAX, V|E},
340
{"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 2 }, 1, FF_LAMBDA_MAX, V|E},
341
{"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 31 }, 1, FF_LAMBDA_MAX, V|E},
342
{"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, V|E},
343
{"skip_loop_filter", NULL, OFFSET(skip_loop_filter), FF_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
344
{"skip_idct"       , NULL, OFFSET(skip_idct)       , FF_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
345
{"skip_frame"      , NULL, OFFSET(skip_frame)      , FF_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
346
{"none"            , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONE    }, INT_MIN, INT_MAX, V|D, "avdiscard"},
347
{"default"         , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
348
{"noref"           , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONREF  }, INT_MIN, INT_MAX, V|D, "avdiscard"},
349
{"bidir"           , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_BIDIR   }, INT_MIN, INT_MAX, V|D, "avdiscard"},
350
{"nokey"           , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONKEY  }, INT_MIN, INT_MAX, V|D, "avdiscard"},
351
{"all"             , NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AVDISCARD_ALL     }, INT_MIN, INT_MAX, V|D, "avdiscard"},
352
{"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, {.i64 = 1 }, 0, 4, V|E},
353
{"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, 10, V|E},
354
{"crf", "enables constant quality mode, and selects the quality (x264)", OFFSET(crf), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 51, V|E},
355
{"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, V|E},
356
{"keyint_min", "minimum interval between IDR-frames (x264)", OFFSET(keyint_min), FF_OPT_TYPE_INT, {.i64 = 25 }, INT_MIN, INT_MAX, V|E},
357
{"refs", "reference frames to consider for motion compensation (Snow)", OFFSET(refs), FF_OPT_TYPE_INT, {.i64 = 1 }, INT_MIN, INT_MAX, V|E},
358
{"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
359
{"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
360
{"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|A|E},
361
{"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)", OFFSET(directpred), FF_OPT_TYPE_INT, {.i64 = 2 }, INT_MIN, INT_MAX, V|E},
362
{"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_BPYRAMID }, INT_MIN, INT_MAX, V|E, "flags2"},
363
{"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_WPRED }, INT_MIN, INT_MAX, V|E, "flags2"},
364
{"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_MIXED_REFS }, INT_MIN, INT_MAX, V|E, "flags2"},
365
{"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_8X8DCT }, INT_MIN, INT_MAX, V|E, "flags2"},
366
{"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_FASTPSKIP }, INT_MIN, INT_MAX, V|E, "flags2"},
367
{"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_AUD }, INT_MIN, INT_MAX, V|E, "flags2"},
368
{"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_SKIP_RD }, INT_MIN, INT_MAX, V|E, "flags2"},
369
{"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, {.dbl = 20.0 }, FLT_MIN, FLT_MAX, V|E},
370
{"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, -6, 6, V|E},
371
{"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, -6, 6, V|E},
372
{"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E, "partitions"},
373
{"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = X264_PART_I4X4 }, INT_MIN, INT_MAX, V|E, "partitions"},
374
{"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = X264_PART_I8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},
375
{"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = X264_PART_P4X4 }, INT_MIN, INT_MAX, V|E, "partitions"},
376
{"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = X264_PART_P8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},
377
{"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = X264_PART_B8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},
378
{"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, {.i64 = 6 }, 0, INT_MAX, V|E},
379
{"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, {.i64 = 256 }, 0, INT_MAX, V|E},
380
{"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_INTRA_VLC }, INT_MIN, INT_MAX, V|E, "flags2"},
381
{"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX, V|E},
382
{"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, {.i64 = FF_COMPRESSION_DEFAULT }, INT_MIN, INT_MAX, V|A|E},
383
{"lpc_coeff_precision", "LPC coefficient precision (FLAC)", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, A|E},
384
{"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
385
{"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
386
{"prediction_order_method", "search method for selecting prediction order", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
387
{"min_partition_order", NULL, OFFSET(min_partition_order), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
388
{"max_partition_order", NULL, OFFSET(max_partition_order), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
389
{"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, V|E},
390
{"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_DROP_FRAME_TIMECODE }, INT_MIN, INT_MAX, V|E, "flags2"},
391
{"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_NON_LINEAR_QUANT }, INT_MIN, INT_MAX, V|E, "flags2"},
392
#if FF_API_REQUEST_CHANNELS
393
{"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, A|D},
394
#endif
395
{"drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, {.dbl = 1.0 }, 0.0, 1.0, A|D},
396
{"reservoir", "use bit reservoir", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_BIT_RESERVOIR }, INT_MIN, INT_MAX, A|E, "flags2"},
397
{"mbtree", "use macroblock tree ratecontrol (x264 only)", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_MBTREE }, INT_MIN, INT_MAX, V|E, "flags2"},
398
{"bits_per_raw_sample", NULL, OFFSET(bits_per_raw_sample), FF_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX},
399
{"channel_layout", NULL, OFFSET(channel_layout), FF_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, INT64_MAX, A|E|D, "channel_layout"},
400
{"request_channel_layout", NULL, OFFSET(request_channel_layout), FF_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, INT64_MAX, A|D, "request_channel_layout"},
401
{"rc_max_vbv_use", NULL, OFFSET(rc_max_available_vbv_use), FF_OPT_TYPE_FLOAT, {.dbl = 1.0/3 }, 0.0, FLT_MAX, V|E},
402
{"rc_min_vbv_use", NULL, OFFSET(rc_min_vbv_overflow_use),  FF_OPT_TYPE_FLOAT, {.dbl = 3 },     0.0, FLT_MAX, V|E},
403
{"ticks_per_frame", NULL, OFFSET(ticks_per_frame), FF_OPT_TYPE_INT, {.i64 = 1 }, 1, INT_MAX, A|V|E|D},
404
{"color_primaries", NULL, OFFSET(color_primaries), FF_OPT_TYPE_INT, {.i64 = AVCOL_PRI_UNSPECIFIED }, 1, AVCOL_PRI_NB-1, V|E|D},
405
{"color_trc", NULL, OFFSET(color_trc), FF_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, V|E|D},
406
{"colorspace", NULL, OFFSET(colorspace), FF_OPT_TYPE_INT, {.i64 = AVCOL_SPC_UNSPECIFIED }, 1, AVCOL_SPC_NB-1, V|E|D},
407
{"color_range", NULL, OFFSET(color_range), FF_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, AVCOL_RANGE_NB-1, V|E|D},
408
{"chroma_sample_location", NULL, OFFSET(chroma_sample_location), FF_OPT_TYPE_INT, {.i64 = AVCHROMA_LOC_UNSPECIFIED }, 0, AVCHROMA_LOC_NB-1, V|E|D},
409
{"psy", "use psycho visual optimization", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_PSY }, INT_MIN, INT_MAX, V|E, "flags2"},
410
{"psy_rd", "specify psycho visual strength", OFFSET(psy_rd), FF_OPT_TYPE_FLOAT, {.dbl = 1.0 }, 0, FLT_MAX, V|E},
411
{"psy_trellis", "specify psycho visual trellis", OFFSET(psy_trellis), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, 0, FLT_MAX, V|E},
412
{"aq_mode", "specify aq method", OFFSET(aq_mode), FF_OPT_TYPE_INT, {.i64 = 1 }, 0, INT_MAX, V|E},
413
{"aq_strength", "specify aq strength", OFFSET(aq_strength), FF_OPT_TYPE_FLOAT, {.dbl = 1.0 }, 0, FLT_MAX, V|E},
414
{"rc_lookahead", "specify number of frames to look ahead for frametype", OFFSET(rc_lookahead), FF_OPT_TYPE_INT, {.i64 = 40 }, 0, INT_MAX, V|E},
415
{"ssim", "ssim will be calculated during encoding", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_SSIM }, INT_MIN, INT_MAX, V|E, "flags2"},
416
{"intra_refresh", "use periodic insertion of intra blocks instead of keyframes", 0, FF_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_INTRA_REFRESH }, INT_MIN, INT_MAX, V|E, "flags2"},
417
{"crf_max", "in crf mode, prevents vbv from lowering quality beyond this point", OFFSET(crf_max), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 51, V|E},
418
{"log_level_offset", "set the log level offset", OFFSET(log_level_offset), FF_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX },
419
{"lpc_type", "specify LPC algorithm", OFFSET(lpc_type), FF_OPT_TYPE_INT, {.i64 = AV_LPC_TYPE_DEFAULT }, AV_LPC_TYPE_DEFAULT, AV_LPC_TYPE_NB-1, A|E},
420
{"none",     NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AV_LPC_TYPE_NONE },     INT_MIN, INT_MAX, A|E, "lpc_type"},
421
{"fixed",    NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AV_LPC_TYPE_FIXED },    INT_MIN, INT_MAX, A|E, "lpc_type"},
422
{"levinson", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AV_LPC_TYPE_LEVINSON }, INT_MIN, INT_MAX, A|E, "lpc_type"},
423
{"cholesky", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = AV_LPC_TYPE_CHOLESKY }, INT_MIN, INT_MAX, A|E, "lpc_type"},
424
{"lpc_passes", "number of passes to use for Cholesky factorization during LPC analysis", OFFSET(lpc_passes), FF_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E},
425
{"slices", "number of slices, used in parallelized decoding", OFFSET(slices), FF_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, V|E},
426
{"thread_type", "select multithreading type", OFFSET(thread_type), FF_OPT_TYPE_INT, {.i64 = FF_THREAD_SLICE|FF_THREAD_FRAME }, 0, INT_MAX, V|E|D, "thread_type"},
427
{"slice", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_THREAD_SLICE }, INT_MIN, INT_MAX, V|E|D, "thread_type"},
428
{"frame", NULL, 0, FF_OPT_TYPE_CONST, {.i64 = FF_THREAD_FRAME }, INT_MIN, INT_MAX, V|E|D, "thread_type"},
429
{"vbv_delay", "initial buffer fill time in periods of 27Mhz clock", 0, FF_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX},
430
{"audio_service_type", "audio service type", OFFSET(audio_service_type), FF_OPT_TYPE_INT, {.i64 = AV_AUDIO_SERVICE_TYPE_MAIN }, 0, AV_AUDIO_SERVICE_TYPE_NB-1, A|E, "audio_service_type"},
431
{"ma", "Main Audio Service", 0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_MAIN },              INT_MIN, INT_MAX, A|E, "audio_service_type"},
432
{"ef", "Effects",            0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_EFFECTS },           INT_MIN, INT_MAX, A|E, "audio_service_type"},
433
{"vi", "Visually Impaired",  0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED }, INT_MIN, INT_MAX, A|E, "audio_service_type"},
434
{"hi", "Hearing Impaired",   0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED },  INT_MIN, INT_MAX, A|E, "audio_service_type"},
435
{"di", "Dialogue",           0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_DIALOGUE },          INT_MIN, INT_MAX, A|E, "audio_service_type"},
436
{"co", "Commentary",         0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_COMMENTARY },        INT_MIN, INT_MAX, A|E, "audio_service_type"},
437
{"em", "Emergency",          0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_EMERGENCY },         INT_MIN, INT_MAX, A|E, "audio_service_type"},
438
{"vo", "Voice Over",         0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_VOICE_OVER },        INT_MIN, INT_MAX, A|E, "audio_service_type"},
439
{"ka", "Karaoke",            0, FF_OPT_TYPE_CONST, {.i64 = AV_AUDIO_SERVICE_TYPE_KARAOKE },           INT_MIN, INT_MAX, A|E, "audio_service_type"},
440
{NULL},
441
};
442

    
443
#undef A
444
#undef V
445
#undef S
446
#undef E
447
#undef D
448
#undef DEFAULT
449

    
450
static const AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options, LIBAVUTIL_VERSION_INT, OFFSET(log_level_offset) };
451

    
452
void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType codec_type){
453
    int flags=0;
454
    memset(s, 0, sizeof(AVCodecContext));
455

    
456
    s->av_class= &av_codec_context_class;
457

    
458
    s->codec_type = codec_type;
459
    if(codec_type == AVMEDIA_TYPE_AUDIO)
460
        flags= AV_OPT_FLAG_AUDIO_PARAM;
461
    else if(codec_type == AVMEDIA_TYPE_VIDEO)
462
        flags= AV_OPT_FLAG_VIDEO_PARAM;
463
    else if(codec_type == AVMEDIA_TYPE_SUBTITLE)
464
        flags= AV_OPT_FLAG_SUBTITLE_PARAM;
465
    av_opt_set_defaults2(s, flags, flags);
466

    
467
    s->time_base= (AVRational){0,1};
468
    s->get_buffer= avcodec_default_get_buffer;
469
    s->release_buffer= avcodec_default_release_buffer;
470
    s->get_format= avcodec_default_get_format;
471
    s->execute= avcodec_default_execute;
472
    s->execute2= avcodec_default_execute2;
473
    s->sample_aspect_ratio= (AVRational){0,1};
474
    s->pix_fmt= PIX_FMT_NONE;
475
    s->sample_fmt= AV_SAMPLE_FMT_NONE;
476

    
477
    s->palctrl = NULL;
478
    s->reget_buffer= avcodec_default_reget_buffer;
479
    s->reordered_opaque= AV_NOPTS_VALUE;
480
}
481

    
482
int avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec){
483
    avcodec_get_context_defaults2(s, codec ? codec->type : AVMEDIA_TYPE_UNKNOWN);
484
    if(codec && codec->priv_data_size){
485
        if(!s->priv_data){
486
            s->priv_data= av_mallocz(codec->priv_data_size);
487
            if (!s->priv_data) {
488
                return AVERROR(ENOMEM);
489
            }
490
        }
491
        if(codec->priv_class){
492
            *(AVClass**)s->priv_data= codec->priv_class;
493
            av_opt_set_defaults(s->priv_data);
494
        }
495
    }
496
    return 0;
497
}
498

    
499
AVCodecContext *avcodec_alloc_context3(AVCodec *codec){
500
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
501

    
502
    if(avctx==NULL) return NULL;
503

    
504
    if(avcodec_get_context_defaults3(avctx, codec) < 0){
505
        av_free(avctx);
506
        return NULL;
507
    }
508

    
509
    return avctx;
510
}
511

    
512
AVCodecContext *avcodec_alloc_context2(enum AVMediaType codec_type){
513
    AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
514

    
515
    if(avctx==NULL) return NULL;
516

    
517
    avcodec_get_context_defaults2(avctx, codec_type);
518

    
519
    return avctx;
520
}
521

    
522
void avcodec_get_context_defaults(AVCodecContext *s){
523
    avcodec_get_context_defaults2(s, AVMEDIA_TYPE_UNKNOWN);
524
}
525

    
526
AVCodecContext *avcodec_alloc_context(void){
527
    return avcodec_alloc_context2(AVMEDIA_TYPE_UNKNOWN);
528
}
529

    
530
int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
531
{
532
    if (dest->codec) { // check that the dest context is uninitialized
533
        av_log(dest, AV_LOG_ERROR,
534
               "Tried to copy AVCodecContext %p into already-initialized %p\n",
535
               src, dest);
536
        return AVERROR(EINVAL);
537
    }
538
    memcpy(dest, src, sizeof(*dest));
539

    
540
    /* set values specific to opened codecs back to their default state */
541
    dest->priv_data       = NULL;
542
    dest->codec           = NULL;
543
    dest->palctrl         = NULL;
544
    dest->slice_offset    = NULL;
545
    dest->internal_buffer = NULL;
546
    dest->hwaccel         = NULL;
547
    dest->thread_opaque   = NULL;
548

    
549
    /* reallocate values that should be allocated separately */
550
    dest->rc_eq           = NULL;
551
    dest->extradata       = NULL;
552
    dest->intra_matrix    = NULL;
553
    dest->inter_matrix    = NULL;
554
    dest->rc_override     = NULL;
555
    if (src->rc_eq) {
556
        dest->rc_eq = av_strdup(src->rc_eq);
557
        if (!dest->rc_eq)
558
            return AVERROR(ENOMEM);
559
    }
560

    
561
#define alloc_and_copy_or_fail(obj, size, pad) \
562
    if (src->obj && size > 0) { \
563
        dest->obj = av_malloc(size + pad); \
564
        if (!dest->obj) \
565
            goto fail; \
566
        memcpy(dest->obj, src->obj, size); \
567
        if (pad) \
568
            memset(((uint8_t *) dest->obj) + size, 0, pad); \
569
    }
570
    alloc_and_copy_or_fail(extradata,    src->extradata_size,
571
                           FF_INPUT_BUFFER_PADDING_SIZE);
572
    alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
573
    alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
574
    alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);
575
#undef alloc_and_copy_or_fail
576

    
577
    return 0;
578

    
579
fail:
580
    av_freep(&dest->rc_override);
581
    av_freep(&dest->intra_matrix);
582
    av_freep(&dest->inter_matrix);
583
    av_freep(&dest->extradata);
584
    av_freep(&dest->rc_eq);
585
    return AVERROR(ENOMEM);
586
}