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83 lines
2.8 KiB
83 lines
2.8 KiB
/* |
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* AVOptions |
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* copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#ifndef AVOPT_H |
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#define AVOPT_H |
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/** |
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* @file opt.h |
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* AVOptions |
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*/ |
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enum AVOptionType{ |
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FF_OPT_TYPE_FLAGS, |
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FF_OPT_TYPE_INT, |
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FF_OPT_TYPE_INT64, |
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FF_OPT_TYPE_DOUBLE, |
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FF_OPT_TYPE_FLOAT, |
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FF_OPT_TYPE_STRING, |
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FF_OPT_TYPE_RATIONAL, |
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FF_OPT_TYPE_CONST=128, |
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}; |
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/** |
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* AVOption. |
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*/ |
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typedef struct AVOption { |
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const char *name; |
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/** |
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* short English text help. |
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* @fixme what about other languages |
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*/ |
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const char *help; |
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int offset; ///< offset to context structure where the parsed value should be stored |
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enum AVOptionType type; |
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double default_val; |
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double min; |
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double max; |
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int flags; |
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#define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding |
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#define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding |
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#define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ... |
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#define AV_OPT_FLAG_AUDIO_PARAM 8 |
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#define AV_OPT_FLAG_VIDEO_PARAM 16 |
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#define AV_OPT_FLAG_SUBTITLE_PARAM 32 |
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//FIXME think about enc-audio, ... style flags |
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const char *unit; |
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} AVOption; |
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const AVOption *av_set_string(void *obj, const char *name, const char *val); |
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const AVOption *av_set_double(void *obj, const char *name, double n); |
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const AVOption *av_set_q(void *obj, const char *name, AVRational n); |
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const AVOption *av_set_int(void *obj, const char *name, int64_t n); |
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double av_get_double(void *obj, const char *name, const AVOption **o_out); |
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AVRational av_get_q(void *obj, const char *name, const AVOption **o_out); |
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int64_t av_get_int(void *obj, const char *name, const AVOption **o_out); |
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const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len); |
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const AVOption *av_next_option(void *obj, const AVOption *last); |
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int av_opt_show(void *obj, void *av_log_obj); |
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void av_opt_set_defaults(void *s); |
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#endif
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