Prevent crash if you forget to call FilterGraph::setup().

diff --git a/src/lib/filter_graph.cc b/src/lib/filter_graph.cc
index 2dbb2afc3e3f4abd147e6af8936f546df857848a..745d980a40597b6b4d07c78685893f46e1271f01 100644 (file)
--- a/src/lib/filter_graph.cc
+++ b/src/lib/filter_graph.cc
@@ -55,10 +55,11 @@ FilterGraph::setup(vector<Filter> const& filters)
 {
        auto const filters_string = Filter::ffmpeg_string (filters);
        if (filters.empty()) {
-               _copy = true;
                return;
        }
 
+       _copy = false;
+
        _frame = av_frame_alloc ();
 
        _graph = avfilter_graph_alloc();

diff --git a/src/lib/filter_graph.h b/src/lib/filter_graph.h
index 315aa7835c8a108b016b9109947f2f230c6a30bc..e474f851f47af56ffe6096b583a937202d82ad86 100644 (file)
--- a/src/lib/filter_graph.h
+++ b/src/lib/filter_graph.h
@@ -68,7 +68,7 @@ protected:
 
        AVFilterGraph* _graph = nullptr;
        /** true if this graph has no filters in, so it just copies stuff straight through */
-       bool _copy = false;
+       bool _copy = true;
        AVFilterContext* _buffer_src_context = nullptr;
        AVFilterContext* _buffer_sink_context = nullptr;
        AVFrame* _frame = nullptr;