From 2bc0de385840466602341b9b151918fcf0934774 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Fri, 21 Sep 2012 08:30:42 +0200
Subject: [PATCH] lavc: initialize AVFrame.extended_data in
 avcodec_get_frame_defaults()

---
 libavcodec/utils.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index a3ab1344aa..63ea77f9fd 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -635,12 +635,16 @@ enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum
 
 void avcodec_get_frame_defaults(AVFrame *frame)
 {
+    if (frame->extended_data != frame->data)
+        av_freep(&frame->extended_data);
+
     memset(frame, 0, sizeof(AVFrame));
 
     frame->pts                 = AV_NOPTS_VALUE;
     frame->key_frame           = 1;
     frame->sample_aspect_ratio = (AVRational) {0, 1 };
     frame->format              = -1; /* unknown */
+    frame->extended_data       = frame->data;
 }
 
 AVFrame *avcodec_alloc_frame(void)
-- 
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