From c6baa4046ac48d1cc39a9c8e1c037d3679f64e1e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 22 Jan 2012 19:30:40 +0100
Subject: [PATCH] avfilter: add some asserts() to check refcounts.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavfilter/avfilter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 6e958e7141..706f7e2694 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -92,6 +92,7 @@ static void free_pool(AVFilterPool *pool)
             AVFilterBufferRef *picref = pool->pic[i];
             /* free buffer: picrefs stored in the pool are not
              * supposed to contain a free callback */
+            av_assert0(!picref->buf->refcount);
             av_freep(&picref->buf->data[0]);
             av_freep(&picref->buf);
 
@@ -146,6 +147,7 @@ void avfilter_unref_buffer(AVFilterBufferRef *ref)
 {
     if (!ref)
         return;
+    av_assert0(ref->buf->refcount > 0);
     if (!(--ref->buf->refcount)) {
         if (!ref->buf->free) {
             store_in_pool(ref);