From 631d9860adad82183a0174afb0f74ffee83e8686 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 file changed, 5 insertions(+)

diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index f45e03d7e4a..742d963eec0 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);