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Complete documentation for av_set_string().

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Originally committed as revision 14436 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2008-07-27 20:55:56 +00:00
parent 59da0390dc
commit b211d3ae47
1 changed files with 20 additions and 0 deletions
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20
libavcodec/opt.h
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@ -99,10 +99,30 @@ typedef struct AVOption {
*/
const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
/**
* @see av_set_string2()
*/
attribute_deprecated const AVOption *av_set_string(void *obj, const char *name, const char *val);
/**
* Sets the field of obj with the given name to value.
*
* @param[in] obj A struct whose first element is a pointer to an
* AVClass.
* @param[in] name the name of the field to set
* @param[in] val The value to set. If the field is not of a string
* type, then the given string is parsed.
* SI postfixes and some named scalars are supported.
* If the field is of a numeric type, it has to be a numeric or named
* scalar. Behavior with more than one scalar and +- infix operators
* is undefined.
* If the field is of a flags type, it has to be a sequence of numeric
* scalars or named flags separated by '+' or '-'. Prefixing a flag
* with '+' causes it to be set without affecting the other flags;
* similarly, '-' unsets a flag.
* @return a pointer to the AVOption corresponding to the field set or
* NULL if no matching AVOption exists, or if the value \p val is not
* valid
* @param alloc when 1 then the old value will be av_freed() and the
* new av_strduped()
* when 0 then no av_free() nor av_strdup() will be used