From 7c99d37ad674dd34bb58a0c430dad9074e938c78 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Mon, 25 Jun 2012 09:43:53 +0200
Subject: [PATCH] mpeg2dec: Add comment explaining why we first chain up to the
 parent class' decide_allocation

---
 ext/mpeg2dec/gstmpeg2dec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ext/mpeg2dec/gstmpeg2dec.c b/ext/mpeg2dec/gstmpeg2dec.c
index 6417450d0c..7032be83bb 100644
--- a/ext/mpeg2dec/gstmpeg2dec.c
+++ b/ext/mpeg2dec/gstmpeg2dec.c
@@ -269,6 +269,8 @@ gst_mpeg2dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
   if (allocator)
     gst_allocator_unref (allocator);
 
+  /* Now chain up to the parent class to guarantee that we can
+   * get a buffer pool from the query */
   if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
           query))
     return FALSE;