From bfe9e6d74c833b485116bb51bb3196daf661b332 Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Date: Wed, 20 Jan 2010 01:08:31 +0100
Subject: [PATCH] avifile: Fix playback of fixed sample size audio streams.

---
 dlls/avifil32/avifile.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dlls/avifil32/avifile.c b/dlls/avifil32/avifile.c
index c034a6bb5f6..e627196a8f8 100644
--- a/dlls/avifil32/avifile.c
+++ b/dlls/avifil32/avifile.c
@@ -1087,6 +1087,15 @@ static HRESULT WINAPI IAVIStream_fnRead(IAVIStream *iface, LONG start,
     LONG block = start;
     LONG offset = 0;
 
+    if (!buffer)
+    {
+      if (bytesread)
+        *bytesread = samples*This->sInfo.dwSampleSize;
+      if (samplesread)
+        *samplesread = samples;
+      return AVIERR_OK;
+    }
+
     /* convert start sample to block,offset pair */
     AVIFILE_SamplesToBlock(This, &block, &offset);
 
-- 
2.11.4.GIT