From 80b12b7b8fce6a80abd5dc6a2aceb254c1513d96 Mon Sep 17 00:00:00 2001
From: Vincent Povirk <vincent@codeweavers.com>
Date: Wed, 20 Oct 2010 12:54:08 -0500
Subject: [PATCH] windowscodecs: Seek to start of stream when opening TIFF files.

---
 dlls/windowscodecs/tiffformat.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index 645cfb0..2525ee0 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -183,6 +183,11 @@ static void tiff_stream_unmap(thandle_t client_data, tdata_t addr, toff_t size)
 
 static TIFF* tiff_open_stream(IStream *stream, const char *mode)
 {
+    LARGE_INTEGER zero;
+
+    zero.QuadPart = 0;
+    IStream_Seek(stream, zero, STREAM_SEEK_SET, NULL);
+
     return pTIFFClientOpen("<IStream object>", mode, stream, tiff_stream_read,
         tiff_stream_write, tiff_stream_seek, tiff_stream_close,
         tiff_stream_size, tiff_stream_map, tiff_stream_unmap);
-- 
1.7.1