Move the definitions of AVSEEK_SIZE to make it appear before the

description of url_seek(), which references it.

Originally committed as revision 25376 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avio.h

@@ -134,6 +134,13 @@ int url_read(URLContext *h, unsigned char *buf, int size);
 int url_read_complete(URLContext *h, unsigned char *buf, int size);
 int url_write(URLContext *h, const unsigned char *buf, int size);
 
+/**
+ * Passing this as the "whence" parameter to a seek function causes it to
+ * return the filesize without seeking anywhere. Supporting this is optional.
+ * If it is not supported then the seek function will return <0.
+ */
+#define AVSEEK_SIZE 0x10000
+
 /**
  * Change the position that will be used by the next read/write
  * operation on the resource accessed by h.
@@ -236,13 +243,6 @@ int av_url_read_pause(URLContext *h, int pause);
 int64_t av_url_read_seek(URLContext *h, int stream_index,
                          int64_t timestamp, int flags);
 
-/**
- * Passing this as the "whence" parameter to a seek function causes it to
- * return the filesize without seeking anywhere. Supporting this is optional.
- * If it is not supported then the seek function will return <0.
- */
-#define AVSEEK_SIZE 0x10000
-
 /**
  * Oring this flag as into the "whence" parameter to a seek function causes it to
  * seek by any means (like reopening and linear reading) or other normally unreasonble