API changes, most recent first:
+2011-08-xx - xxxxxxx - lavu 51.10.0
+ Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
+
2011-08-xx - xxxxxx - lavu 51.9.0
Add av_fifo_peek2(), deprecate av_fifo_peek().
AVCodecContext *s = obj;
AVCodec *c = NULL;
- if (s->priv_data) {
+ if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ) && s->priv_data) {
if (s->codec->priv_class)
return av_opt_find(s->priv_data, name, unit, opt_flags, search_flags);
return NULL;
AVFormatContext *s = obj;
AVInputFormat *ifmt = NULL;
AVOutputFormat *ofmt = NULL;
- if (s->priv_data) {
+ if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ) && s->priv_data) {
if ((s->iformat && !s->iformat->priv_class) ||
(s->oformat && !s->oformat->priv_class))
return NULL;
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 51
-#define LIBAVUTIL_VERSION_MINOR 9
+#define LIBAVUTIL_VERSION_MINOR 10
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
#define AV_OPT_SEARCH_CHILDREN 0x0001 /**< Search in possible children of the
given object first. */
+/**
+ * The obj passed to av_opt_find() is fake -- only a double pointer to AVClass
+ * instead of a required pointer to a struct containing AVClass. This is
+ * useful for searching for options without needing to allocate the corresponding
+ * object.
+ */
+#define AV_OPT_SEARCH_FAKE_OBJ 0x0002
/**
* Look for an option in an object. Consider only options which
*
* @param[in] obj A pointer to a struct whose first element is a
* pointer to an AVClass.
+ * Alternatively a double pointer to an AVClass, if
+ * AV_OPT_SEARCH_FAKE_OBJ search flag is set.
* @param[in] name The name of the option to look for.
* @param[in] unit When searching for named constants, name of the unit
* it belongs to.