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Enhance documentation for AVClass 

Patch by Stefano Sabatini stefanodotsabatini-lalaatpostedotit

Originally committed as revision 12934 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2008-04-24 10:13:38 +00:00 committed by Benoit Fouet
parent 8d94f6065b
commit 95a6a015e3
1 changed files with 19 additions and 5 deletions
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24
libavutil/log.h
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@ -24,15 +24,29 @@
#include <stdarg.h> #include <stdarg.h>
/** /**
* Used by av_log * Describes the class of an AVClass context structure, that is an
* arbitrary struct of which the first field is a pointer to an
* AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
*/ */
typedef struct AVCLASS AVClass; typedef struct AVCLASS AVClass;
struct AVCLASS { struct AVCLASS {
/**
* the name of the class, usually it is the same name of the
* context structure type to which the AVClass is associated
*/
const char* class_name; const char* class_name;
const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
or AVFormatContext, which begin with an AVClass. /**
Needed because av_log is in libavcodec and has no visibility * a pointer to a function which returns the name of a context
of AVIn/OutputFormat */ * instance \p ctx associated with the class
*/
const char* (*item_name)(void* ctx);
/**
* a pointer to the first option specified in the class if any or NULL
*
* @see av_set_default_options()
*/
const struct AVOption *option; const struct AVOption *option;
}; };