FFmpeg/libavcodec/opt.h
Panagiotis Issaris 73a8ceaa17 make AVOptions default value field work.
Patch by Panagiotis Issaris % takis P issaris A uhasselt P be %
Original thread:
Date: Sep 8, 2006 3:22 PM
Subject: [Ffmpeg-devel] [PATCH 1/2] Enable usage of AVOption default value

Originally committed as revision 6224 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-09-10 20:21:40 +00:00

82 lines
2.7 KiB
C

/*
* AVOptions
* copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVOPT_H
#define AVOPT_H
/**
* @file opt.h
* AVOptions
*/
enum AVOptionType{
FF_OPT_TYPE_FLAGS,
FF_OPT_TYPE_INT,
FF_OPT_TYPE_INT64,
FF_OPT_TYPE_DOUBLE,
FF_OPT_TYPE_FLOAT,
FF_OPT_TYPE_STRING,
FF_OPT_TYPE_RATIONAL,
FF_OPT_TYPE_CONST=128,
};
/**
* AVOption.
*/
typedef struct AVOption {
const char *name;
/**
* short English text help.
* @fixme what about other languages
*/
const char *help;
int offset; ///< offset to context structure where the parsed value should be stored
enum AVOptionType type;
double default_val;
double min;
double max;
int flags;
#define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding
#define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding
#define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ...
#define AV_OPT_FLAG_AUDIO_PARAM 8
#define AV_OPT_FLAG_VIDEO_PARAM 16
#define AV_OPT_FLAG_SUBTITLE_PARAM 32
//FIXME think about enc-audio, ... style flags
const char *unit;
} AVOption;
AVOption *av_set_string(void *obj, const char *name, const char *val);
AVOption *av_set_double(void *obj, const char *name, double n);
AVOption *av_set_q(void *obj, const char *name, AVRational n);
AVOption *av_set_int(void *obj, const char *name, int64_t n);
double av_get_double(void *obj, const char *name, AVOption **o_out);
AVRational av_get_q(void *obj, const char *name, AVOption **o_out);
int64_t av_get_int(void *obj, const char *name, AVOption **o_out);
const char *av_get_string(void *obj, const char *name, AVOption **o_out, char *buf, int buf_len);
AVOption *av_next_option(void *obj, AVOption *last);
int av_opt_show(void *obj, void *av_log_obj);
void av_opt_set_defaults(void *s);
#endif