From d8407bba0e48d50fc9d7c9338324a886f74b7d41 Mon Sep 17 00:00:00 2001
From: Nicolas George <nicolas.george@normalesup.org>
Date: Sat, 28 Apr 2012 14:26:46 +0200
Subject: [PATCH] lavfi/avcodec: implement audio copy_frame_prop.

---
 libavfilter/avcodec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavfilter/avcodec.c b/libavfilter/avcodec.c
index e5f2bc3c53..850e21a546 100644
--- a/libavfilter/avcodec.c
+++ b/libavfilter/avcodec.c
@@ -22,6 +22,7 @@
  */
 
 #include "avcodec.h"
+#include "libavutil/opt.h"
 
 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
 {
@@ -38,6 +39,12 @@ int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
         dst->video->top_field_first     = src->top_field_first;
         dst->video->key_frame           = src->key_frame;
         dst->video->pict_type           = src->pict_type;
+        break;
+    case AVMEDIA_TYPE_AUDIO:
+        dst->audio->sample_rate         = av_frame_get_sample_rate(src);
+        break;
+    default:
+        return AVERROR(ENOSYS);
     }
 
     return 0;