-#ifndef AVOPT_H
-#define AVOPT_H
+/*
+ * AVOptions
+ * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFMPEG_OPT_H
+#define FFMPEG_OPT_H
/**
* @file opt.h
* AVOptions
*/
+#include "libavutil/rational.h"
+
enum AVOptionType{
FF_OPT_TYPE_FLAGS,
FF_OPT_TYPE_INT,
FF_OPT_TYPE_FLOAT,
FF_OPT_TYPE_STRING,
FF_OPT_TYPE_RATIONAL,
+ FF_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length
FF_OPT_TYPE_CONST=128,
};
/**
- * AVOption.
+ * AVOption
*/
typedef struct AVOption {
const char *name;
/**
- * short English text help.
- * @fixme what about other languages
+ * short English help text
+ * @todo What about other languages?
*/
const char *help;
- int offset; ///< offset to context structure where the parsed value should be stored
+
+ /**
+ * The offset relative to the context structure where the option
+ * value is stored. It should be 0 for named constants.
+ */
+ int offset;
enum AVOptionType type;
+ /**
+ * the default value for non-constant and value for constant scalars
+ */
double default_val;
- double min;
- double max;
+ double min; ///< minimum valid value for the option
+ double max; ///< maximum valid value for the option
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_VIDEO_PARAM 16
#define AV_OPT_FLAG_SUBTITLE_PARAM 32
//FIXME think about enc-audio, ... style flags
+
+ /**
+ * The logical unit to which the option belongs. Non-constant
+ * options and corresponding named constants share the same
+ * unit. May be NULL.
+ */
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);
+const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
+const AVOption *av_set_string(void *obj, const char *name, const char *val);
+const AVOption *av_set_double(void *obj, const char *name, double n);
+const AVOption *av_set_q(void *obj, const char *name, AVRational n);
+const AVOption *av_set_int(void *obj, const char *name, int64_t n);
+double av_get_double(void *obj, const char *name, const AVOption **o_out);
+AVRational av_get_q(void *obj, const char *name, const AVOption **o_out);
+int64_t av_get_int(void *obj, const char *name, const AVOption **o_out);
+const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len);
+const AVOption *av_next_option(void *obj, const AVOption *last);
int av_opt_show(void *obj, void *av_log_obj);
+void av_opt_set_defaults(void *s);
+void av_opt_set_defaults2(void *s, int mask, int flags);
-#endif
+#endif /* FFMPEG_OPT_H */