fftools/ffmpeg: move freeing a filtergraph into a separate function

1 files changed, 44 insertions, 0 deletions

diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
index c39cf43774..cfd93a0f9d 100644
--- a/fftools/ffmpeg_filter.c
+++ b/fftools/ffmpeg_filter.c
@@ -189,6 +189,50 @@ static OutputFilter *ofilter_alloc(FilterGraph *fg)
     return ofilter;
 }
 
+void fg_free(FilterGraph **pfg)
+{
+    FilterGraph *fg = *pfg;
+
+    if (!fg)
+        return;
+
+        avfilter_graph_free(&fg->graph);
+        for (int j = 0; j < fg->nb_inputs; j++) {
+            InputFilter *ifilter = fg->inputs[j];
+            struct InputStream *ist = ifilter->ist;
+
+            if (ifilter->frame_queue) {
+                AVFrame *frame;
+                while (av_fifo_read(ifilter->frame_queue, &frame, 1) >= 0)
+                    av_frame_free(&frame);
+                av_fifo_freep2(&ifilter->frame_queue);
+            }
+            av_freep(&ifilter->displaymatrix);
+            if (ist->sub2video.sub_queue) {
+                AVSubtitle sub;
+                while (av_fifo_read(ist->sub2video.sub_queue, &sub, 1) >= 0)
+                    avsubtitle_free(&sub);
+                av_fifo_freep2(&ist->sub2video.sub_queue);
+            }
+            av_buffer_unref(&ifilter->hw_frames_ctx);
+            av_freep(&ifilter->name);
+            av_freep(&fg->inputs[j]);
+        }
+        av_freep(&fg->inputs);
+        for (int j = 0; j < fg->nb_outputs; j++) {
+            OutputFilter *ofilter = fg->outputs[j];
+
+            avfilter_inout_free(&ofilter->out_tmp);
+            av_freep(&ofilter->name);
+            av_channel_layout_uninit(&ofilter->ch_layout);
+            av_freep(&fg->outputs[j]);
+        }
+        av_freep(&fg->outputs);
+        av_freep(&fg->graph_desc);
+
+    av_freep(pfg);
+}
+
 FilterGraph *fg_create(char *graph_desc)
 {
     FilterGraph *fg;