lavf: Update to the new API for iterating demuxers

autocomplete.c

@@ -331,8 +331,8 @@ int x264_cli_autocomplete( const char *prev, const char *cur )
     OPT( "--input-fmt" )
     {
 #if HAVE_LAVF
-        av_register_all();
-        for( const AVInputFormat *f = NULL; (f = av_iformat_next( f )); )
+        void *i = NULL;
+        for( const AVInputFormat *f; (f = av_demuxer_iterate( &i )); )
             suggest_token( f->name, ',' );
 #endif
     }

configure

@@ -1154,7 +1154,7 @@ if [ "$lavf" = "auto" ] ; then
         done
     fi
 
-    if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LIBS" "av_register_all();" ; then
+    if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LIBS" "av_demuxer_iterate(0);" ; then
         if cc_check libavcodec/avcodec.h "$LAVF_CFLAGS $LAVF_LIBS" "avcodec_send_packet(0,0);" ; then
             lavf="yes"
         else

input/lavf.c

@@ -168,7 +168,6 @@ static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, c
     lavf_hnd_t *h = calloc( 1, sizeof(lavf_hnd_t) );
     if( !h )
         return -1;
-    av_register_all();
     if( !strcmp( psz_filename, "-" ) )
         psz_filename = "pipe:";