Libav
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00001 /* 00002 * AVOptions 00003 * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #ifndef AVCODEC_OPT_H 00023 #define AVCODEC_OPT_H 00024 00030 #include "libavutil/rational.h" 00031 #include "avcodec.h" 00032 00033 enum AVOptionType{ 00034 FF_OPT_TYPE_FLAGS, 00035 FF_OPT_TYPE_INT, 00036 FF_OPT_TYPE_INT64, 00037 FF_OPT_TYPE_DOUBLE, 00038 FF_OPT_TYPE_FLOAT, 00039 FF_OPT_TYPE_STRING, 00040 FF_OPT_TYPE_RATIONAL, 00041 FF_OPT_TYPE_BINARY, 00042 FF_OPT_TYPE_CONST=128, 00043 }; 00044 00048 typedef struct AVOption { 00049 const char *name; 00050 00055 const char *help; 00056 00061 int offset; 00062 enum AVOptionType type; 00063 00067 double default_val; 00068 double min; 00069 double max; 00070 00071 int flags; 00072 #define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding 00073 #define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding 00074 #define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ... 00075 #define AV_OPT_FLAG_AUDIO_PARAM 8 00076 #define AV_OPT_FLAG_VIDEO_PARAM 16 00077 #define AV_OPT_FLAG_SUBTITLE_PARAM 32 00078 //FIXME think about enc-audio, ... style flags 00079 00085 const char *unit; 00086 } AVOption; 00087 00094 typedef struct AVOption2 { 00095 const char *name; 00096 00101 const char *help; 00102 00107 int offset; 00108 enum AVOptionType type; 00109 00113 union { 00114 double dbl; 00115 const char *str; 00116 } default_val; 00117 00118 double min; 00119 double max; 00120 00121 int flags; 00122 /* 00123 #define AV_OPT_FLAG_ENCODING_PARAM 1 ///< a generic parameter which can be set by the user for muxing or encoding 00124 #define AV_OPT_FLAG_DECODING_PARAM 2 ///< a generic parameter which can be set by the user for demuxing or decoding 00125 #define AV_OPT_FLAG_METADATA 4 ///< some data extracted or inserted into the file like title, comment, ... 00126 #define AV_OPT_FLAG_AUDIO_PARAM 8 00127 #define AV_OPT_FLAG_VIDEO_PARAM 16 00128 #define AV_OPT_FLAG_SUBTITLE_PARAM 32 00129 */ 00130 //FIXME think about enc-audio, ... style flags 00131 00137 const char *unit; 00138 } AVOption2; 00139 00140 00153 const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags); 00154 00155 #if LIBAVCODEC_VERSION_MAJOR < 53 00156 00159 attribute_deprecated const AVOption *av_set_string(void *obj, const char *name, const char *val); 00160 00167 attribute_deprecated const AVOption *av_set_string2(void *obj, const char *name, const char *val, int alloc); 00168 #endif 00169 00197 int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out); 00198 00199 const AVOption *av_set_double(void *obj, const char *name, double n); 00200 const AVOption *av_set_q(void *obj, const char *name, AVRational n); 00201 const AVOption *av_set_int(void *obj, const char *name, int64_t n); 00202 double av_get_double(void *obj, const char *name, const AVOption **o_out); 00203 AVRational av_get_q(void *obj, const char *name, const AVOption **o_out); 00204 int64_t av_get_int(void *obj, const char *name, const AVOption **o_out); 00205 const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len); 00206 const AVOption *av_next_option(void *obj, const AVOption *last); 00207 int av_opt_show(void *obj, void *av_log_obj); 00208 void av_opt_set_defaults(void *s); 00209 void av_opt_set_defaults2(void *s, int mask, int flags); 00210 00211 #endif /* AVCODEC_OPT_H */