From e145ce202757dc4654c3e07e3f788dc385016074 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Thu, 3 Jul 2008 12:10:54 +0000
Subject: Allow NULL for read_header in AVInputFormat. See discussion in
 "[PATCH] allow empty params for av_open_input_stream()".

Originally committed as revision 14059 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/utils.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libavformat/utils.c')

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 63dd959af9..794babac4b 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -394,9 +394,11 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
         ic->priv_data = NULL;
     }
 
+    if (ic->iformat->read_header) {
     err = ic->iformat->read_header(ic, ap);
     if (err < 0)
         goto fail;
+    }
 
     if (pb && !ic->data_offset)
         ic->data_offset = url_ftell(ic->pb);
-- 
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