avconv: add a function for determining whether a filtergraph is simple

This makes the code easier to read.

1 files changed, 5 insertions, 1 deletions

diff --git a/avconv_filter.c b/avconv_filter.c
index a412f6e314..1d4aeb0770 100644
--- a/avconv_filter.c
+++ b/avconv_filter.c
@@ -691,7 +691,7 @@ static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
 int configure_filtergraph(FilterGraph *fg)
 {
     AVFilterInOut *inputs, *outputs, *cur;
-    int ret, i, simple = !fg->graph_desc;
+    int ret, i, simple = filtergraph_is_simple(fg);
     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
                                       fg->graph_desc;
 
@@ -760,3 +760,7 @@ int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
     return 0;
 }
 
+int filtergraph_is_simple(FilterGraph *fg)
+{
+    return !fg->graph_desc;
+}