Document url_filesize().

Originally committed as revision 25268 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/avio.h b/libavformat/avio.h
index a33a7d98a826d4da425fade896ea27f44c4a4f70..1e97357e38991a04d642e9406321288f48eaf60f 100644 (file)
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -165,6 +165,11 @@ int url_close(URLContext *h);
  */
 int url_exist(const char *url);
 
+/**
+ * Return the filesize of the resource accessed by h, AVERROR(ENOSYS)
+ * if the operation is not supported by h, or another negative value
+ * corresponding to an AVERROR error code in case of failure.
+ */
 int64_t url_filesize(URLContext *h);
 
 /**