avformat/utils: Move ff_format_set_url to avformat.c

An auxiliary function for AVFormatContexts (mainly muxers,
but potentially (e.g. rtsp) also demuxers).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavformat/avformat.c

@@ -691,3 +691,10 @@ int ff_is_intra_only(enum AVCodecID id)
         return 0;
     return 1;
 }
+
+void ff_format_set_url(AVFormatContext *s, char *url)
+{
+    av_assert0(url);
+    av_freep(&s->url);
+    s->url = url;
+}

libavformat/utils.c

@@ -697,10 +697,3 @@ int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf
     par->extradata_size = buf->len;
     return 0;
 }
-
-void ff_format_set_url(AVFormatContext *s, char *url)
-{
-    av_assert0(url);
-    av_freep(&s->url);
-    s->url = url;
-}