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FFmpeg/libavcodec/options.c

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  1. /*

  2.  * Copyright (c) 2001 Fabrice Bellard

  3.  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. /**

  23.  * @file

  24.  * Options definition for AVCodecContext.

  25.  */

  26. 

  27. #include "avcodec.h"

  28. #include "internal.h"

  29. #include "libavutil/avassert.h"

  30. #include "libavutil/opt.h"

  31. #include <float.h>              /* FLT_MIN, FLT_MAX */

  32. 

  33. static const char* context_to_name(void* ptr) {

  34.     AVCodecContext *avc= ptr;

  35. 

  36.     if(avc && avc->codec && avc->codec->name)

  37.         return avc->codec->name;

  38.     else

  39.         return "NULL";

  40. }

  41. 

  42. static const AVOption *opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)

  43. {

  44.     AVCodecContext *s = obj;

  45.     AVCodec        *c = NULL;

  46. 

  47.     if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ) && s->priv_data) {

  48.         if (s->codec && s->codec->priv_class)

  49.             return av_opt_find(s->priv_data, name, unit, opt_flags, search_flags);

  50.         return NULL;

  51.     }

  52. 

  53.     while ((c = av_codec_next(c))) {

  54.         const AVOption *o;

  55.         if (c->priv_class && (o = av_opt_find(&c->priv_class, name, unit, opt_flags, search_flags)))

  56.             return o;

  57.     }

  58.     return NULL;

  59. }

  60. 

  61. #define OFFSET(x) offsetof(AVCodecContext,x)

  62. #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

  63. //these names are too long to be readable

  64. #define V AV_OPT_FLAG_VIDEO_PARAM

  65. #define A AV_OPT_FLAG_AUDIO_PARAM

  66. #define S AV_OPT_FLAG_SUBTITLE_PARAM

  67. #define E AV_OPT_FLAG_ENCODING_PARAM

  68. #define D AV_OPT_FLAG_DECODING_PARAM

  69. 

  70. #define AV_CODEC_DEFAULT_BITRATE 200*1000

  71. 

  72. static const AVOption options[]={

  73. {"b", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, {.dbl = AV_CODEC_DEFAULT_BITRATE }, INT_MIN, INT_MAX, A|V|E},

  74. {"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), FF_OPT_TYPE_INT, {.dbl = 128*1000 }, INT_MIN, INT_MAX, A|E},

  75. {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, {.dbl = AV_CODEC_DEFAULT_BITRATE*20 }, 1, INT_MAX, V|E},

  76. {"flags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, 0, UINT_MAX, V|A|E|D, "flags"},

  77. {"mv4", "use four motion vector by macroblock (mpeg4)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_4MV }, INT_MIN, INT_MAX, V|E, "flags"},

  78. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  79. {"obmc", "use overlapped block motion compensation (h263+)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_OBMC }, INT_MIN, INT_MAX, V|E, "flags"},

  80. #endif

  81. {"qpel", "use 1/4 pel motion compensation", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_QPEL }, INT_MIN, INT_MAX, V|E, "flags"},

  82. {"loop", "use loop filter", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_LOOP_FILTER }, INT_MIN, INT_MAX, V|E, "flags"},

  83. {"qscale", "use fixed qscale", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_QSCALE }, INT_MIN, INT_MAX, 0, "flags"},

  84. {"gmc", "use gmc", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_GMC }, INT_MIN, INT_MAX, V|E, "flags"},

  85. {"mv0", "always try a mb with mv=<0,0>", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_MV0 }, INT_MIN, INT_MAX, V|E, "flags"},

  86. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  87. {"part", "use data partitioning", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_PART }, INT_MIN, INT_MAX, V|E, "flags"},

  88. #endif

  89. {"input_preserved", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_INPUT_PRESERVED }, INT_MIN, INT_MAX, 0, "flags"},

  90. {"pass1", "use internal 2pass ratecontrol in first  pass mode", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_PASS1 }, INT_MIN, INT_MAX, 0, "flags"},

  91. {"pass2", "use internal 2pass ratecontrol in second pass mode", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_PASS2 }, INT_MIN, INT_MAX, 0, "flags"},

  92. #if FF_API_MJPEG_GLOBAL_OPTS

  93. {"extern_huff", "use external huffman table (for mjpeg)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_EXTERN_HUFF }, INT_MIN, INT_MAX, 0, "flags"},

  94. #endif

  95. {"gray", "only decode/encode grayscale", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_GRAY }, INT_MIN, INT_MAX, V|E|D, "flags"},

  96. {"emu_edge", "don't draw edges", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_EMU_EDGE }, INT_MIN, INT_MAX, 0, "flags"},

  97. {"psnr", "error[?] variables will be set during encoding", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_PSNR }, INT_MIN, INT_MAX, V|E, "flags"},

  98. {"truncated", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_TRUNCATED }, INT_MIN, INT_MAX, 0, "flags"},

  99. {"naq", "normalize adaptive quantization", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_NORMALIZE_AQP }, INT_MIN, INT_MAX, V|E, "flags"},

  100. {"ildct", "use interlaced dct", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_INTERLACED_DCT }, INT_MIN, INT_MAX, V|E, "flags"},

  101. {"low_delay", "force low delay", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_LOW_DELAY }, INT_MIN, INT_MAX, V|D|E, "flags"},

  102. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  103. {"alt", "enable alternate scantable (mpeg2/mpeg4)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_ALT_SCAN }, INT_MIN, INT_MAX, V|E, "flags"},

  104. #endif

  105. {"global_header", "place global headers in extradata instead of every keyframe", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_GLOBAL_HEADER }, INT_MIN, INT_MAX, V|A|E, "flags"},

  106. {"bitexact", "use only bitexact stuff (except (i)dct)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_BITEXACT }, INT_MIN, INT_MAX, A|V|S|D|E, "flags"},

  107. {"aic", "h263 advanced intra coding / mpeg4 ac prediction", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_AC_PRED }, INT_MIN, INT_MAX, V|E, "flags"},

  108. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  109. {"umv", "use unlimited motion vectors", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_H263P_UMV }, INT_MIN, INT_MAX, V|E, "flags"},

  110. #endif

  111. {"cbp", "use rate distortion optimization for cbp", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_CBP_RD }, INT_MIN, INT_MAX, V|E, "flags"},

  112. {"qprd", "use rate distortion optimization for qp selection", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_QP_RD }, INT_MIN, INT_MAX, V|E, "flags"},

  113. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  114. {"aiv", "h263 alternative inter vlc", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_H263P_AIV }, INT_MIN, INT_MAX, V|E, "flags"},

  115. {"slice", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_H263P_SLICE_STRUCT }, INT_MIN, INT_MAX, V|E, "flags"},

  116. #endif

  117. {"ilme", "interlaced motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_INTERLACED_ME }, INT_MIN, INT_MAX, V|E, "flags"},

  118. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  119. {"scan_offset", "will reserve space for svcd scan offset user data", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_SVCD_SCAN_OFFSET }, INT_MIN, INT_MAX, V|E, "flags"},

  120. #endif

  121. {"cgop", "closed gop", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_CLOSED_GOP }, INT_MIN, INT_MAX, V|E, "flags"},

  122. {"fast", "allow non spec compliant speedup tricks", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_FAST }, INT_MIN, INT_MAX, V|E, "flags2"},

  123. {"sgop", "strictly enforce gop size", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_STRICT_GOP }, INT_MIN, INT_MAX, V|E, "flags2"},

  124. {"noout", "skip bitstream encoding", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_NO_OUTPUT }, INT_MIN, INT_MAX, V|E, "flags2"},

  125. {"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_LOCAL_HEADER }, INT_MIN, INT_MAX, V|E, "flags2"},

  126. {"showall", "Show all frames before the first keyframe", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_SHOW_ALL }, INT_MIN, INT_MAX, V|D, "flags2"},

  127. {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  128. {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, {.dbl = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method"},

  129. {"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, {.dbl = ME_ZERO }, INT_MIN, INT_MAX, V|E, "me_method" },

  130. {"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, {.dbl = ME_FULL }, INT_MIN, INT_MAX, V|E, "me_method" },

  131. {"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, {.dbl = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method" },

  132. {"esa", "esa motion estimation (alias for full)", 0, FF_OPT_TYPE_CONST, {.dbl = ME_FULL }, INT_MIN, INT_MAX, V|E, "me_method" },

  133. {"tesa", "tesa motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_TESA }, INT_MIN, INT_MAX, V|E, "me_method" },

  134. {"dia", "dia motion estimation (alias for epzs)", 0, FF_OPT_TYPE_CONST, {.dbl = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method" },

  135. {"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_LOG }, INT_MIN, INT_MAX, V|E, "me_method" },

  136. {"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_PHODS }, INT_MIN, INT_MAX, V|E, "me_method" },

  137. {"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_X1 }, INT_MIN, INT_MAX, V|E, "me_method" },

  138. {"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_HEX }, INT_MIN, INT_MAX, V|E, "me_method" },

  139. {"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_UMH }, INT_MIN, INT_MAX, V|E, "me_method" },

  140. {"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, {.dbl = ME_ITER }, INT_MIN, INT_MAX, V|E, "me_method" },

  141. {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  142. {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, {.dbl = 0}, INT_MIN, INT_MAX},

  143. {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, {.dbl = 12 }, INT_MIN, INT_MAX, V|E},

  144. {"ar", "set audio sampling rate (in Hz)", OFFSET(sample_rate), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|D|E},

  145. {"ac", "set number of audio channels", OFFSET(channels), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|D|E},

  146. {"cutoff", "set cutoff bandwidth", OFFSET(cutoff), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|E},

  147. {"frame_size", NULL, OFFSET(frame_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|E},

  148. {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  149. {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  150. {"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), FF_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -FLT_MAX, FLT_MAX, V|E},

  151. {"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), FF_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -1, FLT_MAX, V|E},

  152. {"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), FF_OPT_TYPE_INT, {.dbl = 2 }, -1, 69, V|E},

  153. {"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), FF_OPT_TYPE_INT, {.dbl = 31 }, -1, 69, V|E},

  154. {"qdiff", "max difference between the quantizer scale (VBR)", OFFSET(max_qdiff), FF_OPT_TYPE_INT, {.dbl = 3 }, INT_MIN, INT_MAX, V|E},

  155. {"bf", "use 'frames' B frames", OFFSET(max_b_frames), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, -1, FF_MAX_B_FRAMES, V|E},

  156. {"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},

  157. {"rc_strategy", "ratecontrol method", OFFSET(rc_strategy), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  158. {"b_strategy", "strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, {.dbl = 0 }, INT_MIN, INT_MAX, V|E},

  159. #if FF_API_X264_GLOBAL_OPTS

  160. {"wpredp", "weighted prediction analysis method", OFFSET(weighted_p_pred), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, V|E},

  161. #endif

  162. {"ps", "rtp payload size in bytes", OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  163. {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  164. {"header_bits", NULL, OFFSET(header_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  165. {"i_tex_bits", NULL, OFFSET(i_tex_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  166. {"p_tex_bits", NULL, OFFSET(p_tex_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  167. {"i_count", NULL, OFFSET(i_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  168. {"p_count", NULL, OFFSET(p_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  169. {"skip_count", NULL, OFFSET(skip_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  170. {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  171. {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  172. {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  173. {"bug", "workaround not auto detected encoder bugs", OFFSET(workaround_bugs), FF_OPT_TYPE_FLAGS, {.dbl = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},

  174. {"autodetect", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_AUTODETECT }, INT_MIN, INT_MAX, V|D, "bug"},

  175. {"old_msmpeg4", "some old lavc generated msmpeg4v3 files (no autodetection)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_OLD_MSMPEG4 }, INT_MIN, INT_MAX, V|D, "bug"},

  176. {"xvid_ilace", "Xvid interlacing bug (autodetected if fourcc==XVIX)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_XVID_ILACE }, INT_MIN, INT_MAX, V|D, "bug"},

  177. {"ump4", "(autodetected if fourcc==UMP4)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_UMP4 }, INT_MIN, INT_MAX, V|D, "bug"},

  178. {"no_padding", "padding bug (autodetected)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_NO_PADDING }, INT_MIN, INT_MAX, V|D, "bug"},

  179. {"amv", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_AMV }, INT_MIN, INT_MAX, V|D, "bug"},

  180. {"ac_vlc", "illegal vlc bug (autodetected per fourcc)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_AC_VLC }, INT_MIN, INT_MAX, V|D, "bug"},

  181. {"qpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_QPEL_CHROMA }, INT_MIN, INT_MAX, V|D, "bug"},

  182. {"std_qpel", "old standard qpel (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_STD_QPEL }, INT_MIN, INT_MAX, V|D, "bug"},

  183. {"qpel_chroma2", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_QPEL_CHROMA2 }, INT_MIN, INT_MAX, V|D, "bug"},

  184. {"direct_blocksize", "direct-qpel-blocksize bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_DIRECT_BLOCKSIZE }, INT_MIN, INT_MAX, V|D, "bug"},

  185. {"edge", "edge padding bug (autodetected per fourcc/version)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_EDGE }, INT_MIN, INT_MAX, V|D, "bug"},

  186. {"hpel_chroma", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_HPEL_CHROMA }, INT_MIN, INT_MAX, V|D, "bug"},

  187. {"dc_clip", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_DC_CLIP }, INT_MIN, INT_MAX, V|D, "bug"},

  188. {"ms", "workaround various bugs in microsofts broken decoders", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_MS }, INT_MIN, INT_MAX, V|D, "bug"},

  189. {"trunc", "trancated frames", 0, FF_OPT_TYPE_CONST, {.dbl = FF_BUG_TRUNCATED}, INT_MIN, INT_MAX, V|D, "bug"},

  190. {"lelim", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  191. {"celim", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  192. {"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|V|D|E, "strict"},

  193. {"very", "strictly conform to a older more strict version of the spec or reference software", 0, FF_OPT_TYPE_CONST, {.dbl = FF_COMPLIANCE_VERY_STRICT }, INT_MIN, INT_MAX, V|D|E, "strict"},

  194. {"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_COMPLIANCE_STRICT }, INT_MIN, INT_MAX, V|D|E, "strict"},

  195. {"normal", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_COMPLIANCE_NORMAL }, INT_MIN, INT_MAX, V|D|E, "strict"},

  196. {"unofficial", "allow unofficial extensions", 0, FF_OPT_TYPE_CONST, {.dbl = FF_COMPLIANCE_UNOFFICIAL }, INT_MIN, INT_MAX, V|D|E, "strict"},

  197. {"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, {.dbl = FF_COMPLIANCE_EXPERIMENTAL }, INT_MIN, INT_MAX, V|D|E, "strict"},

  198. {"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},

  199. {"er", "set error detection aggressivity", OFFSET(error_recognition), FF_OPT_TYPE_INT, {.dbl = FF_ER_CAREFUL }, INT_MIN, INT_MAX, A|V|D, "er"},

  200. {"careful", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_ER_CAREFUL }, INT_MIN, INT_MAX, V|D, "er"},

  201. {"compliant", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_ER_COMPLIANT }, INT_MIN, INT_MAX, V|D, "er"},

  202. {"aggressive", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_ER_AGGRESSIVE }, INT_MIN, INT_MAX, V|D, "er"},

  203. #if FF_API_VERY_AGGRESSIVE

  204. {"very_aggressive", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_ER_VERY_AGGRESSIVE }, INT_MIN, INT_MAX, V|D, "er"},

  205. #endif /* FF_API_VERY_AGGRESSIVE */

  206. {"explode", "abort decoding on error recognition", 0, FF_OPT_TYPE_CONST, {.dbl = FF_ER_EXPLODE }, INT_MIN, INT_MAX, V|D, "er"},

  207. {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  208. {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  209. {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  210. {"mpeg_quant", "use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  211. {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX},

  212. {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX},

  213. {"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},

  214. {"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, -FLT_MAX, FLT_MAX, V|E},

  215. {"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  216. {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  217. {"rc_eq", "set rate control equation", OFFSET(rc_eq), FF_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, V|E},

  218. {"maxrate", "set max video bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  219. {"minrate", "set min video bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  220. {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|V|E},

  221. {"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, V|E},

  222. {"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},

  223. {"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},

  224. {"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},

  225. {"dct", "DCT algorithm", OFFSET(dct_algo), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, V|E, "dct"},

  226. {"auto", "autoselect a good one (default)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_AUTO }, INT_MIN, INT_MAX, V|E, "dct"},

  227. {"fastint", "fast integer", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_FASTINT }, INT_MIN, INT_MAX, V|E, "dct"},

  228. {"int", "accurate integer", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_INT }, INT_MIN, INT_MAX, V|E, "dct"},

  229. {"mmx", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_MMX }, INT_MIN, INT_MAX, V|E, "dct"},

  230. {"mlib", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_MLIB }, INT_MIN, INT_MAX, V|E, "dct"},

  231. {"altivec", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_ALTIVEC }, INT_MIN, INT_MAX, V|E, "dct"},

  232. {"faan", "floating point AAN DCT", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DCT_FAAN }, INT_MIN, INT_MAX, V|E, "dct"},

  233. {"lumi_mask", "compresses bright areas stronger than medium ones", OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},

  234. {"tcplx_mask", "temporal complexity masking", OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},

  235. {"scplx_mask", "spatial complexity masking", OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},

  236. {"p_mask", "inter masking", OFFSET(p_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},

  237. {"dark_mask", "compresses dark areas stronger than medium ones", OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX, V|E},

  238. {"idct", "select IDCT implementation", OFFSET(idct_algo), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, V|E|D, "idct"},

  239. {"auto", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_AUTO }, INT_MIN, INT_MAX, V|E|D, "idct"},

  240. {"int", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_INT }, INT_MIN, INT_MAX, V|E|D, "idct"},

  241. {"simple", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLE }, INT_MIN, INT_MAX, V|E|D, "idct"},

  242. {"simplemmx", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLEMMX }, INT_MIN, INT_MAX, V|E|D, "idct"},

  243. {"libmpeg2mmx", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_LIBMPEG2MMX }, INT_MIN, INT_MAX, V|E|D, "idct"},

  244. {"ps2", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_PS2 }, INT_MIN, INT_MAX, V|E|D, "idct"},

  245. {"mlib", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_MLIB }, INT_MIN, INT_MAX, V|E|D, "idct"},

  246. {"arm", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_ARM }, INT_MIN, INT_MAX, V|E|D, "idct"},

  247. {"altivec", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_ALTIVEC }, INT_MIN, INT_MAX, V|E|D, "idct"},

  248. {"sh4", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SH4 }, INT_MIN, INT_MAX, V|E|D, "idct"},

  249. {"simplearm", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLEARM }, INT_MIN, INT_MAX, V|E|D, "idct"},

  250. {"simplearmv5te", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLEARMV5TE }, INT_MIN, INT_MAX, V|E|D, "idct"},

  251. {"simplearmv6", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLEARMV6 }, INT_MIN, INT_MAX, V|E|D, "idct"},

  252. {"simpleneon", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLENEON }, INT_MIN, INT_MAX, V|E|D, "idct"},

  253. {"simplealpha", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_SIMPLEALPHA }, INT_MIN, INT_MAX, V|E|D, "idct"},

  254. {"h264", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_H264 }, INT_MIN, INT_MAX, V|E|D, "idct"},

  255. {"vp3", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_VP3 }, INT_MIN, INT_MAX, V|E|D, "idct"},

  256. {"ipp", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_IPP }, INT_MIN, INT_MAX, V|E|D, "idct"},

  257. {"xvidmmx", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_XVIDMMX }, INT_MIN, INT_MAX, V|E|D, "idct"},

  258. {"faani", "floating point AAN IDCT", 0, FF_OPT_TYPE_CONST, {.dbl = FF_IDCT_FAAN }, INT_MIN, INT_MAX, V|D|E, "idct"},

  259. {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  260. {"ec", "set error concealment strategy", OFFSET(error_concealment), FF_OPT_TYPE_FLAGS, {.dbl = 3 }, INT_MIN, INT_MAX, V|D, "ec"},

  261. {"guess_mvs", "iterative motion vector (MV) search (slow)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_EC_GUESS_MVS }, INT_MIN, INT_MAX, V|D, "ec"},

  262. {"deblock", "use strong deblock filter for damaged MBs", 0, FF_OPT_TYPE_CONST, {.dbl = FF_EC_DEBLOCK }, INT_MIN, INT_MAX, V|D, "ec"},

  263. {"bits_per_coded_sample", NULL, OFFSET(bits_per_coded_sample), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  264. {"pred", "prediction method", OFFSET(prediction_method), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "pred"},

  265. {"left", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PRED_LEFT }, INT_MIN, INT_MAX, V|E, "pred"},

  266. {"plane", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PRED_PLANE }, INT_MIN, INT_MAX, V|E, "pred"},

  267. {"median", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PRED_MEDIAN }, INT_MIN, INT_MAX, V|E, "pred"},

  268. {"aspect", "sample aspect ratio", OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, 10, V|E},

  269. {"debug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, 0, INT_MAX, V|A|S|E|D, "debug"},

  270. {"pict", "picture info", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_PICT_INFO }, INT_MIN, INT_MAX, V|D, "debug"},

  271. {"rc", "rate control", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_RC }, INT_MIN, INT_MAX, V|E, "debug"},

  272. {"bitstream", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_BITSTREAM }, INT_MIN, INT_MAX, V|D, "debug"},

  273. {"mb_type", "macroblock (MB) type", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_MB_TYPE }, INT_MIN, INT_MAX, V|D, "debug"},

  274. {"qp", "per-block quantization parameter (QP)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_QP }, INT_MIN, INT_MAX, V|D, "debug"},

  275. {"mv", "motion vector", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_MV }, INT_MIN, INT_MAX, V|D, "debug"},

  276. {"dct_coeff", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_DCT_COEFF }, INT_MIN, INT_MAX, V|D, "debug"},

  277. {"skip", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_SKIP }, INT_MIN, INT_MAX, V|D, "debug"},

  278. {"startcode", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_STARTCODE }, INT_MIN, INT_MAX, V|D, "debug"},

  279. {"pts", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_PTS }, INT_MIN, INT_MAX, V|D, "debug"},

  280. {"er", "error recognition", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_ER }, INT_MIN, INT_MAX, V|D, "debug"},

  281. {"mmco", "memory management control operations (H.264)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_MMCO }, INT_MIN, INT_MAX, V|D, "debug"},

  282. {"bugs", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_BUGS }, INT_MIN, INT_MAX, V|D, "debug"},

  283. {"vis_qp", "visualize quantization parameter (QP), lower QP are tinted greener", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_VIS_QP }, INT_MIN, INT_MAX, V|D, "debug"},

  284. {"vis_mb_type", "visualize block types", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_VIS_MB_TYPE }, INT_MIN, INT_MAX, V|D, "debug"},

  285. {"buffers", "picture buffer allocations", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_BUFFERS }, INT_MIN, INT_MAX, V|D, "debug"},

  286. {"thread_ops", "threading operations", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_THREADS }, INT_MIN, INT_MAX, V|D, "debug"},

  287. {"vismv", "visualize motion vectors (MVs)", OFFSET(debug_mv), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, V|D, "debug_mv"},

  288. {"pf", "forward predicted MVs of P-frames", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_VIS_MV_P_FOR }, INT_MIN, INT_MAX, V|D, "debug_mv"},

  289. {"bf", "forward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_VIS_MV_B_FOR }, INT_MIN, INT_MAX, V|D, "debug_mv"},

  290. {"bb", "backward predicted MVs of B-frames", 0, FF_OPT_TYPE_CONST, {.dbl = FF_DEBUG_VIS_MV_B_BACK }, INT_MIN, INT_MAX, V|D, "debug_mv"},

  291. {"cmp", "full pel me compare function", OFFSET(me_cmp), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  292. {"subcmp", "sub pel me compare function", OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  293. {"mbcmp", "macroblock compare function", OFFSET(mb_cmp), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  294. {"ildctcmp", "interlaced dct compare function", OFFSET(ildct_cmp), FF_OPT_TYPE_INT, {.dbl = FF_CMP_VSAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  295. {"dia_size", "diamond type & size for motion estimation", OFFSET(dia_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  296. {"last_pred", "amount of motion predictors from the previous frame", OFFSET(last_predictor_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  297. {"preme", "pre motion estimation", OFFSET(pre_me), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  298. {"precmp", "pre motion estimation compare function", OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  299. {"sad", "sum of absolute differences, fast (default)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_SAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  300. {"sse", "sum of squared errors", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_SSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  301. {"satd", "sum of absolute Hadamard transformed differences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_SATD }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  302. {"dct", "sum of absolute DCT transformed differences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_DCT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  303. {"psnr", "sum of squared quantization errors (avoid, low quality)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_PSNR }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  304. {"bit", "number of bits needed for the block", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_BIT }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  305. {"rd", "rate distortion optimal, slow", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_RD }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  306. {"zero", "0", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_ZERO }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  307. {"vsad", "sum of absolute vertical differences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_VSAD }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  308. {"vsse", "sum of squared vertical differences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_VSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  309. {"nsse", "noise preserving sum of squared differences", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_NSSE }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  310. #if CONFIG_SNOW_ENCODER

  311. {"w53", "5/3 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_W53 }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  312. {"w97", "9/7 wavelet, only used in snow", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_W97 }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  313. #endif

  314. {"dctmax", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  315. {"chroma", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_CMP_CHROMA }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  316. {"pre_dia_size", "diamond type & size for motion estimation pre-pass", OFFSET(pre_dia_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  317. {"subq", "sub pel motion estimation quality", OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, {.dbl = 8 }, INT_MIN, INT_MAX, V|E},

  318. {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  319. {"me_range", "limit motion vectors range (1023 for DivX player)", OFFSET(me_range), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  320. {"ibias", "intra quant bias", OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, {.dbl = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, V|E},

  321. {"pbias", "inter quant bias", OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, {.dbl = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, V|E},

  322. {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  323. {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  324. {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E},

  325. {"coder", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "coder"},

  326. {"vlc", "variable length coder / huffman coder", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CODER_TYPE_VLC }, INT_MIN, INT_MAX, V|E, "coder"},

  327. {"ac", "arithmetic coder", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CODER_TYPE_AC }, INT_MIN, INT_MAX, V|E, "coder"},

  328. {"raw", "raw (no encoding)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CODER_TYPE_RAW }, INT_MIN, INT_MAX, V|E, "coder"},

  329. {"rle", "run-length coder", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CODER_TYPE_RLE }, INT_MIN, INT_MAX, V|E, "coder"},

  330. {"deflate", "deflate-based coder", 0, FF_OPT_TYPE_CONST, {.dbl = FF_CODER_TYPE_DEFLATE }, INT_MIN, INT_MAX, V|E, "coder"},

  331. {"context", "context model", OFFSET(context_model), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  332. {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  333. {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  334. {"mbd", "macroblock decision algorithm (high quality mode)", OFFSET(mb_decision), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "mbd"},

  335. {"simple", "use mbcmp (default)", 0, FF_OPT_TYPE_CONST, {.dbl = FF_MB_DECISION_SIMPLE }, INT_MIN, INT_MAX, V|E, "mbd"},

  336. {"bits", "use fewest bits", 0, FF_OPT_TYPE_CONST, {.dbl = FF_MB_DECISION_BITS }, INT_MIN, INT_MAX, V|E, "mbd"},

  337. {"rd", "use best rate distortion", 0, FF_OPT_TYPE_CONST, {.dbl = FF_MB_DECISION_RD }, INT_MIN, INT_MAX, V|E, "mbd"},

  338. {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  339. {"sc_threshold", "scene change threshold", OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  340. {"lmin", "min lagrange factor (VBR)", OFFSET(lmin), FF_OPT_TYPE_INT, {.dbl =  2*FF_QP2LAMBDA }, 0, INT_MAX, V|E},

  341. {"lmax", "max lagrange factor (VBR)", OFFSET(lmax), FF_OPT_TYPE_INT, {.dbl = 31*FF_QP2LAMBDA }, 0, INT_MAX, V|E},

  342. {"nr", "noise reduction", OFFSET(noise_reduction), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  343. {"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, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  344. {"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  345. {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_FLAGS, {.dbl = CODEC_FLAG2_FASTPSKIP|CODEC_FLAG2_BIT_RESERVOIR|CODEC_FLAG2_PSY|CODEC_FLAG2_MBTREE }, 0, UINT_MAX, V|A|E|D, "flags2"},

  346. {"error", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  347. #if FF_API_ANTIALIAS_ALGO

  348. {"antialias", "MP3 antialias algorithm", OFFSET(antialias_algo), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|D, "aa"},

  349. {"auto", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_AA_AUTO }, INT_MIN, INT_MAX, V|D, "aa"},

  350. {"fastint", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_AA_FASTINT }, INT_MIN, INT_MAX, V|D, "aa"},

  351. {"int", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_AA_INT }, INT_MIN, INT_MAX, V|D, "aa"},

  352. {"float", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_AA_FLOAT }, INT_MIN, INT_MAX, V|D, "aa"},

  353. #endif

  354. {"qns", "quantizer noise shaping", OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  355. {"threads", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, {.dbl = 1 }, INT_MIN, INT_MAX, V|E|D},

  356. {"me_threshold", "motion estimaton threshold", OFFSET(me_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  357. {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  358. {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, {.dbl = 0 }, INT_MIN, INT_MAX, V|E},

  359. {"nssew", "nsse weight", OFFSET(nsse_weight), FF_OPT_TYPE_INT, {.dbl = 8 }, INT_MIN, INT_MAX, V|E},

  360. {"skip_top", "number of macroblock rows at the top which are skipped", OFFSET(skip_top), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|D},

  361. {"skip_bottom", "number of macroblock rows at the bottom which are skipped", OFFSET(skip_bottom), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|D},

  362. {"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, {.dbl = FF_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "profile"},

  363. {"unknown", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "profile"},

  364. {"aac_main", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_AAC_MAIN }, INT_MIN, INT_MAX, A|E, "profile"},

  365. {"aac_low", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_AAC_LOW }, INT_MIN, INT_MAX, A|E, "profile"},

  366. {"aac_ssr", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_AAC_SSR }, INT_MIN, INT_MAX, A|E, "profile"},

  367. {"aac_ltp", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_AAC_LTP }, INT_MIN, INT_MAX, A|E, "profile"},

  368. {"dts", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_DTS }, INT_MIN, INT_MAX, A|E, "profile"},

  369. {"dts_es", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_DTS_ES }, INT_MIN, INT_MAX, A|E, "profile"},

  370. {"dts_96_24", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_DTS_96_24 }, INT_MIN, INT_MAX, A|E, "profile"},

  371. {"dts_hd_hra", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_DTS_HD_HRA }, INT_MIN, INT_MAX, A|E, "profile"},

  372. {"dts_hd_ma", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_PROFILE_DTS_HD_MA }, INT_MIN, INT_MAX, A|E, "profile"},

  373. {"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, {.dbl = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "level"},

  374. {"unknown", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_LEVEL_UNKNOWN }, INT_MIN, INT_MAX, V|A|E, "level"},

  375. {"lowres", "decode at 1= 1/2, 2=1/4, 3=1/8 resolutions", OFFSET(lowres), FF_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, V|A|D},

  376. {"skip_threshold", "frame skip threshold", OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  377. {"skip_factor", "frame skip factor", OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  378. {"skip_exp", "frame skip exponent", OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  379. {"skipcmp", "frame skip compare function", OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, {.dbl = FF_CMP_DCTMAX }, INT_MIN, INT_MAX, V|E, "cmp_func"},

  380. {"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},

  381. {"mblmin", "min macroblock lagrange factor (VBR)", OFFSET(mb_lmin), FF_OPT_TYPE_INT, {.dbl = FF_QP2LAMBDA * 2 }, 1, FF_LAMBDA_MAX, V|E},

  382. {"mblmax", "max macroblock lagrange factor (VBR)", OFFSET(mb_lmax), FF_OPT_TYPE_INT, {.dbl = FF_QP2LAMBDA * 31 }, 1, FF_LAMBDA_MAX, V|E},

  383. {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, {.dbl = 256 }, INT_MIN, INT_MAX, V|E},

  384. {"skip_loop_filter", NULL, OFFSET(skip_loop_filter), FF_OPT_TYPE_INT, {.dbl = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  385. {"skip_idct"       , NULL, OFFSET(skip_idct)       , FF_OPT_TYPE_INT, {.dbl = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  386. {"skip_frame"      , NULL, OFFSET(skip_frame)      , FF_OPT_TYPE_INT, {.dbl = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  387. {"none"            , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_NONE    }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  388. {"default"         , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  389. {"noref"           , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_NONREF  }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  390. {"bidir"           , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_BIDIR   }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  391. {"nokey"           , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_NONKEY  }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  392. {"all"             , NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AVDISCARD_ALL     }, INT_MIN, INT_MAX, V|D, "avdiscard"},

  393. {"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), FF_OPT_TYPE_INT, {.dbl = 1 }, 0, 4, V|E},

  394. {"brd_scale", "downscales frames for dynamic B-frame decision", OFFSET(brd_scale), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, 10, V|E},

  395. #if FF_API_X264_GLOBAL_OPTS

  396. {"crf", "enables constant quality mode, and selects the quality (x264/VP8)", OFFSET(crf), FF_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, 0, 63, V|E},

  397. {"cqp", "constant quantization parameter rate control method", OFFSET(cqp), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, V|E},

  398. #endif

  399. {"keyint_min", "minimum interval between IDR-frames", OFFSET(keyint_min), FF_OPT_TYPE_INT, {.dbl = 25 }, INT_MIN, INT_MAX, V|E},

  400. {"refs", "reference frames to consider for motion compensation", OFFSET(refs), FF_OPT_TYPE_INT, {.dbl = 1 }, INT_MIN, INT_MAX, V|E},

  401. {"chromaoffset", "chroma qp offset from luma", OFFSET(chromaoffset), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  402. #if FF_API_X264_GLOBAL_OPTS

  403. {"bframebias", "influences how often B-frames are used", OFFSET(bframebias), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E},

  404. #endif

  405. {"trellis", "rate-distortion optimal quantization", OFFSET(trellis), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E},

  406. #if FF_API_X264_GLOBAL_OPTS

  407. {"directpred", "direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)", OFFSET(directpred), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, V|E},

  408. {"bpyramid", "allows B-frames to be used as references for predicting", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_BPYRAMID }, INT_MIN, INT_MAX, V|E, "flags2"},

  409. {"wpred", "weighted biprediction for b-frames (H.264)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_WPRED }, INT_MIN, INT_MAX, V|E, "flags2"},

  410. {"mixed_refs", "one reference per partition, as opposed to one reference per macroblock", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_MIXED_REFS }, INT_MIN, INT_MAX, V|E, "flags2"},

  411. {"dct8x8", "high profile 8x8 transform (H.264)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_8X8DCT }, INT_MIN, INT_MAX, V|E, "flags2"},

  412. {"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_FASTPSKIP }, INT_MIN, INT_MAX, V|E, "flags2"},

  413. {"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_AUD }, INT_MIN, INT_MAX, V|E, "flags2"},

  414. #endif

  415. {"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_SKIP_RD }, INT_MIN, INT_MAX, V|E, "flags2"},

  416. #if FF_API_X264_GLOBAL_OPTS

  417. {"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, V|E},

  418. {"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, -6, 6, V|E},

  419. {"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, -6, 6, V|E},

  420. {"partitions", "macroblock subpartition sizes to consider", OFFSET(partitions), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E, "partitions"},

  421. {"parti4x4", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = X264_PART_I4X4 }, INT_MIN, INT_MAX, V|E, "partitions"},

  422. {"parti8x8", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = X264_PART_I8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},

  423. {"partp4x4", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = X264_PART_P4X4 }, INT_MIN, INT_MAX, V|E, "partitions"},

  424. {"partp8x8", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = X264_PART_P8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},

  425. {"partb8x8", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = X264_PART_B8X8 }, INT_MIN, INT_MAX, V|E, "partitions"},

  426. #endif

  427. {"sc_factor", "multiplied by qscale for each frame and added to scene_change_score", OFFSET(scenechange_factor), FF_OPT_TYPE_INT, {.dbl = 6 }, 0, INT_MAX, V|E},

  428. {"mv0_threshold", NULL, OFFSET(mv0_threshold), FF_OPT_TYPE_INT, {.dbl = 256 }, 0, INT_MAX, V|E},

  429. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  430. {"ivlc", "intra vlc table", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_INTRA_VLC }, INT_MIN, INT_MAX, V|E, "flags2"},

  431. #endif

  432. {"b_sensitivity", "adjusts sensitivity of b_frame_strategy 1", OFFSET(b_sensitivity), FF_OPT_TYPE_INT, {.dbl = 40 }, 1, INT_MAX, V|E},

  433. {"compression_level", NULL, OFFSET(compression_level), FF_OPT_TYPE_INT, {.dbl = FF_COMPRESSION_DEFAULT }, INT_MIN, INT_MAX, V|A|E},

  434. {"min_prediction_order", NULL, OFFSET(min_prediction_order), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  435. {"max_prediction_order", NULL, OFFSET(max_prediction_order), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  436. #if FF_API_FLAC_GLOBAL_OPTS

  437. {"lpc_coeff_precision", "deprecated, use flac-specific options", OFFSET(lpc_coeff_precision), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, A|E},

  438. {"prediction_order_method", "deprecated, use flac-specific options", OFFSET(prediction_order_method), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  439. {"min_partition_order", "deprecated, use flac-specific options", OFFSET(min_partition_order), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  440. {"max_partition_order", "deprecated, use flac-specific options", OFFSET(max_partition_order), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  441. #endif

  442. {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT64, {.dbl = 0 }, 0, INT64_MAX, V|E},

  443. #if FF_API_MPEGVIDEO_GLOBAL_OPTS

  444. {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_DROP_FRAME_TIMECODE }, INT_MIN, INT_MAX, V|E, "flags2"},

  445. {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_NON_LINEAR_QUANT }, INT_MIN, INT_MAX, V|E, "flags2"},

  446. #endif

  447. #if FF_API_REQUEST_CHANNELS

  448. {"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, A|D},

  449. #endif

  450. #if FF_API_DRC_SCALE

  451. {"drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), FF_OPT_TYPE_FLOAT, {.dbl = 0.0 }, 0.0, 1.0, A|D},

  452. #endif

  453. #if FF_API_LAME_GLOBAL_OPTS

  454. {"reservoir", "use bit reservoir", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_BIT_RESERVOIR }, INT_MIN, INT_MAX, A|E, "flags2"},

  455. #endif

  456. #if FF_API_X264_GLOBAL_OPTS

  457. {"mbtree", "use macroblock tree ratecontrol (x264 only)", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_MBTREE }, INT_MIN, INT_MAX, V|E, "flags2"},

  458. #endif

  459. {"bits_per_raw_sample", NULL, OFFSET(bits_per_raw_sample), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},

  460. {"channel_layout", NULL, OFFSET(channel_layout), FF_OPT_TYPE_INT64, {.dbl = DEFAULT }, 0, INT64_MAX, A|E|D, "channel_layout"},

  461. {"request_channel_layout", NULL, OFFSET(request_channel_layout), FF_OPT_TYPE_INT64, {.dbl = DEFAULT }, 0, INT64_MAX, A|D, "request_channel_layout"},

  462. {"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},

  463. {"rc_min_vbv_use", NULL, OFFSET(rc_min_vbv_overflow_use),  FF_OPT_TYPE_FLOAT, {.dbl = 3 },     0.0, FLT_MAX, V|E},

  464. {"ticks_per_frame", NULL, OFFSET(ticks_per_frame), FF_OPT_TYPE_INT, {.dbl = 1 }, 1, INT_MAX, A|V|E|D},

  465. {"color_primaries", NULL, OFFSET(color_primaries), FF_OPT_TYPE_INT, {.dbl = AVCOL_PRI_UNSPECIFIED }, 1, AVCOL_PRI_NB-1, V|E|D},

  466. {"color_trc", NULL, OFFSET(color_trc), FF_OPT_TYPE_INT, {.dbl = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, V|E|D},

  467. {"colorspace", NULL, OFFSET(colorspace), FF_OPT_TYPE_INT, {.dbl = AVCOL_SPC_UNSPECIFIED }, 1, AVCOL_SPC_NB-1, V|E|D},

  468. {"color_range", NULL, OFFSET(color_range), FF_OPT_TYPE_INT, {.dbl = AVCOL_RANGE_UNSPECIFIED }, 0, AVCOL_RANGE_NB-1, V|E|D},

  469. {"chroma_sample_location", NULL, OFFSET(chroma_sample_location), FF_OPT_TYPE_INT, {.dbl = AVCHROMA_LOC_UNSPECIFIED }, 0, AVCHROMA_LOC_NB-1, V|E|D},

  470. #if FF_API_X264_GLOBAL_OPTS

  471. {"psy", "use psycho visual optimization", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_PSY }, INT_MIN, INT_MAX, V|E, "flags2"},

  472. {"psy_rd", "specify psycho visual strength", OFFSET(psy_rd), FF_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1, FLT_MAX, V|E},

  473. {"psy_trellis", "specify psycho visual trellis", OFFSET(psy_trellis), FF_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, V|E},

  474. {"aq_mode", "specify aq method", OFFSET(aq_mode), FF_OPT_TYPE_INT, {.dbl = -1 }, -1, INT_MAX, V|E},

  475. {"aq_strength", "specify aq strength", OFFSET(aq_strength), FF_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1, FLT_MAX, V|E},

  476. {"rc_lookahead", "specify number of frames to look ahead for frametype", OFFSET(rc_lookahead), FF_OPT_TYPE_INT, {.dbl = 40 }, -1, INT_MAX, V|E},

  477. {"ssim", "ssim will be calculated during encoding", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_SSIM }, INT_MIN, INT_MAX, V|E, "flags2"},

  478. {"intra_refresh", "use periodic insertion of intra blocks instead of keyframes", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_INTRA_REFRESH }, INT_MIN, INT_MAX, V|E, "flags2"},

  479. {"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},

  480. #endif

  481. {"log_level_offset", "set the log level offset", OFFSET(log_level_offset), FF_OPT_TYPE_INT, {.dbl = 0 }, INT_MIN, INT_MAX },

  482. #if FF_API_FLAC_GLOBAL_OPTS

  483. {"lpc_type", "deprecated, use flac-specific options", OFFSET(lpc_type), FF_OPT_TYPE_INT, {.dbl = AV_LPC_TYPE_DEFAULT }, AV_LPC_TYPE_DEFAULT, AV_LPC_TYPE_NB-1, A|E},

  484. {"none",     NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AV_LPC_TYPE_NONE },     INT_MIN, INT_MAX, A|E, "lpc_type"},

  485. {"fixed",    NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AV_LPC_TYPE_FIXED },    INT_MIN, INT_MAX, A|E, "lpc_type"},

  486. {"levinson", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AV_LPC_TYPE_LEVINSON }, INT_MIN, INT_MAX, A|E, "lpc_type"},

  487. {"cholesky", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = AV_LPC_TYPE_CHOLESKY }, INT_MIN, INT_MAX, A|E, "lpc_type"},

  488. {"lpc_passes", "deprecated, use flac-specific options", OFFSET(lpc_passes), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},

  489. #endif

  490. {"slices", "number of slices, used in parallelized decoding", OFFSET(slices), FF_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, V|E},

  491. {"thread_type", "select multithreading type", OFFSET(thread_type), FF_OPT_TYPE_FLAGS, {.dbl = FF_THREAD_SLICE|FF_THREAD_FRAME }, 0, INT_MAX, V|E|D, "thread_type"},

  492. {"slice", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_THREAD_SLICE }, INT_MIN, INT_MAX, V|E|D, "thread_type"},

  493. {"frame", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_THREAD_FRAME }, INT_MIN, INT_MAX, V|E|D, "thread_type"},

  494. {"audio_service_type", "audio service type", OFFSET(audio_service_type), FF_OPT_TYPE_INT, {.dbl = AV_AUDIO_SERVICE_TYPE_MAIN }, 0, AV_AUDIO_SERVICE_TYPE_NB-1, A|E, "audio_service_type"},

  495. {"ma", "Main Audio Service", 0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_MAIN },              INT_MIN, INT_MAX, A|E, "audio_service_type"},

  496. {"ef", "Effects",            0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_EFFECTS },           INT_MIN, INT_MAX, A|E, "audio_service_type"},

  497. {"vi", "Visually Impaired",  0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED }, INT_MIN, INT_MAX, A|E, "audio_service_type"},

  498. {"hi", "Hearing Impaired",   0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED },  INT_MIN, INT_MAX, A|E, "audio_service_type"},

  499. {"di", "Dialogue",           0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_DIALOGUE },          INT_MIN, INT_MAX, A|E, "audio_service_type"},

  500. {"co", "Commentary",         0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_COMMENTARY },        INT_MIN, INT_MAX, A|E, "audio_service_type"},

  501. {"em", "Emergency",          0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_EMERGENCY },         INT_MIN, INT_MAX, A|E, "audio_service_type"},

  502. {"vo", "Voice Over",         0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_VOICE_OVER },        INT_MIN, INT_MAX, A|E, "audio_service_type"},

  503. {"ka", "Karaoke",            0, FF_OPT_TYPE_CONST, {.dbl = AV_AUDIO_SERVICE_TYPE_KARAOKE },           INT_MIN, INT_MAX, A|E, "audio_service_type"},

  504. {"request_sample_fmt", "sample format audio decoders should prefer", OFFSET(request_sample_fmt), FF_OPT_TYPE_INT, {.dbl = AV_SAMPLE_FMT_NONE }, AV_SAMPLE_FMT_NONE, AV_SAMPLE_FMT_NB-1, A|D, "request_sample_fmt"},

  505. {"u8" , "8-bit unsigned integer", 0, FF_OPT_TYPE_CONST, {.dbl = AV_SAMPLE_FMT_U8  }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},

  506. {"s16", "16-bit signed integer",  0, FF_OPT_TYPE_CONST, {.dbl = AV_SAMPLE_FMT_S16 }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},

  507. {"s32", "32-bit signed integer",  0, FF_OPT_TYPE_CONST, {.dbl = AV_SAMPLE_FMT_S32 }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},

  508. {"flt", "32-bit float",           0, FF_OPT_TYPE_CONST, {.dbl = AV_SAMPLE_FMT_FLT }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},

  509. {"dbl", "64-bit double",          0, FF_OPT_TYPE_CONST, {.dbl = AV_SAMPLE_FMT_DBL }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},

  510. {NULL},

  511. };

  512. 

  513. #undef A

  514. #undef V

  515. #undef S

  516. #undef E

  517. #undef D

  518. #undef DEFAULT

  519. 

  520. static const AVClass av_codec_context_class = {

  521.     .class_name              = "AVCodecContext",

  522.     .item_name               = context_to_name,

  523.     .option                  = options,

  524.     .version                 = LIBAVUTIL_VERSION_INT,

  525.     .log_level_offset_offset = OFFSET(log_level_offset),

  526.     .opt_find                = opt_find,

  527. };

  528. 

  529. void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType codec_type){

  530.     int flags=0;

  531.     memset(s, 0, sizeof(AVCodecContext));

  532. 

  533.     s->av_class= &av_codec_context_class;

  534. 

  535.     s->codec_type = codec_type;

  536.     if(codec_type == AVMEDIA_TYPE_AUDIO)

  537.         flags= AV_OPT_FLAG_AUDIO_PARAM;

  538.     else if(codec_type == AVMEDIA_TYPE_VIDEO)

  539.         flags= AV_OPT_FLAG_VIDEO_PARAM;

  540.     else if(codec_type == AVMEDIA_TYPE_SUBTITLE)

  541.         flags= AV_OPT_FLAG_SUBTITLE_PARAM;

  542.     av_opt_set_defaults2(s, flags, flags);

  543. 

  544.     s->time_base= (AVRational){0,1};

  545.     s->get_buffer= avcodec_default_get_buffer;

  546.     s->release_buffer= avcodec_default_release_buffer;

  547.     s->get_format= avcodec_default_get_format;

  548.     s->execute= avcodec_default_execute;

  549.     s->execute2= avcodec_default_execute2;

  550.     s->sample_aspect_ratio= (AVRational){0,1};

  551.     s->pix_fmt= PIX_FMT_NONE;

  552.     s->sample_fmt= AV_SAMPLE_FMT_NONE;

  553. 

  554.     s->reget_buffer= avcodec_default_reget_buffer;

  555.     s->reordered_opaque= AV_NOPTS_VALUE;

  556. }

  557. 

  558. int avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec){

  559.     avcodec_get_context_defaults2(s, codec ? codec->type : AVMEDIA_TYPE_UNKNOWN);

  560.     if(codec && codec->priv_data_size){

  561.         if(!s->priv_data){

  562.             s->priv_data= av_mallocz(codec->priv_data_size);

  563.             if (!s->priv_data) {

  564.                 return AVERROR(ENOMEM);

  565.             }

  566.         }

  567.         if(codec->priv_class){

  568.             *(AVClass**)s->priv_data= codec->priv_class;

  569.             av_opt_set_defaults(s->priv_data);

  570.         }

  571.     }

  572.     if (codec && codec->defaults) {

  573.         int ret;

  574.         AVCodecDefault *d = codec->defaults;

  575.         while (d->key) {

  576.             ret = av_set_string3(s, d->key, d->value, 0, NULL);

  577.             av_assert0(ret >= 0);

  578.             d++;

  579.         }

  580.     }

  581.     return 0;

  582. }

  583. 

  584. AVCodecContext *avcodec_alloc_context3(AVCodec *codec){

  585.     AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

  586. 

  587.     if(avctx==NULL) return NULL;

  588. 

  589.     if(avcodec_get_context_defaults3(avctx, codec) < 0){

  590.         av_free(avctx);

  591.         return NULL;

  592.     }

  593. 

  594.     return avctx;

  595. }

  596. 

  597. #if FF_API_ALLOC_CONTEXT

  598. AVCodecContext *avcodec_alloc_context2(enum AVMediaType codec_type){

  599.     AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

  600. 

  601.     if(avctx==NULL) return NULL;

  602. 

  603.     avcodec_get_context_defaults2(avctx, codec_type);

  604. 

  605.     return avctx;

  606. }

  607. #endif

  608. 

  609. void avcodec_get_context_defaults(AVCodecContext *s){

  610.     avcodec_get_context_defaults2(s, AVMEDIA_TYPE_UNKNOWN);

  611. }

  612. 

  613. #if FF_API_ALLOC_CONTEXT

  614. AVCodecContext *avcodec_alloc_context(void){

  615.     return avcodec_alloc_context2(AVMEDIA_TYPE_UNKNOWN);

  616. }

  617. #endif

  618. 

  619. int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)

  620. {

  621.     if (dest->codec) { // check that the dest context is uninitialized

  622.         av_log(dest, AV_LOG_ERROR,

  623.                "Tried to copy AVCodecContext %p into already-initialized %p\n",

  624.                src, dest);

  625.         return AVERROR(EINVAL);

  626.     }

  627.     memcpy(dest, src, sizeof(*dest));

  628. 

  629.     /* set values specific to opened codecs back to their default state */

  630.     dest->priv_data       = NULL;

  631.     dest->codec           = NULL;

  632.     dest->slice_offset    = NULL;

  633.     dest->internal_buffer = NULL;

  634.     dest->hwaccel         = NULL;

  635.     dest->thread_opaque   = NULL;

  636. 

  637.     /* reallocate values that should be allocated separately */

  638.     dest->rc_eq           = NULL;

  639.     dest->extradata       = NULL;

  640.     dest->intra_matrix    = NULL;

  641.     dest->inter_matrix    = NULL;

  642.     dest->rc_override     = NULL;

  643.     if (src->rc_eq) {

  644.         dest->rc_eq = av_strdup(src->rc_eq);

  645.         if (!dest->rc_eq)

  646.             return AVERROR(ENOMEM);

  647.     }

  648. 

  649. #define alloc_and_copy_or_fail(obj, size, pad) \

  650.     if (src->obj && size > 0) { \

  651.         dest->obj = av_malloc(size + pad); \

  652.         if (!dest->obj) \

  653.             goto fail; \

  654.         memcpy(dest->obj, src->obj, size); \

  655.         if (pad) \

  656.             memset(((uint8_t *) dest->obj) + size, 0, pad); \

  657.     }

  658.     alloc_and_copy_or_fail(extradata,    src->extradata_size,

  659.                            FF_INPUT_BUFFER_PADDING_SIZE);

  660.     alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);

  661.     alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);

  662.     alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);

  663. #undef alloc_and_copy_or_fail

  664. 

  665.     return 0;

  666. 

  667. fail:

  668.     av_freep(&dest->rc_override);

  669.     av_freep(&dest->intra_matrix);

  670.     av_freep(&dest->inter_matrix);

  671.     av_freep(&dest->extradata);

  672.     av_freep(&dest->rc_eq);

  673.     return AVERROR(ENOMEM);

  674. }

  675. 

  676. const AVClass *avcodec_get_class(void)

  677. {

  678.     return &av_codec_context_class;

  679. }