fix pipe support on windows

STDIO streams are opened in text mode by default on Windows. This patch
changes the stdin/stdout streams to be in binary mode if they are being
used for I/O from the vpxenc or vpxdec tools.

Fixes issue #216. Thanks to mw AT hesotech.de for the fix.

Change-Id: I34525b3ce2a4a031d5a48d36df4667589372225b

examples.mk

diff --git a/examples.mk b/examples.mk
index 9340e23..a30205d 100644
--- a/examples.mk
+++ b/examples.mk
@@ -17,6 +17,7 @@
 vpxdec.SRCS                 += vpx_ports/vpx_timer.h
 vpxdec.SRCS                 += vpx/vpx_integer.h
 vpxdec.SRCS                 += args.c args.h vpx_ports/config.h
+vpxdec.SRCS                 += tools_common.c tools_common.h
 vpxdec.SRCS                 += nestegg/halloc/halloc.h
 vpxdec.SRCS                 += nestegg/halloc/src/align.h
 vpxdec.SRCS                 += nestegg/halloc/src/halloc.c
@@ -28,6 +29,7 @@
 vpxdec.DESCRIPTION           = Full featured decoder
 UTILS-$(CONFIG_ENCODERS)    += vpxenc.c
 vpxenc.SRCS                 += args.c args.h y4minput.c y4minput.h
+vpxenc.SRCS                 += tools_common.c tools_common.h
 vpxenc.SRCS                 += vpx_ports/config.h vpx_ports/mem_ops.h
 vpxenc.SRCS                 += vpx_ports/mem_ops_aligned.h
 vpxenc.SRCS                 += libmkv/EbmlIDs.h

tools_common.c

diff --git a/tools_common.c b/tools_common.c
new file mode 100644
index 0000000..d188bbe
--- /dev/null
+++ b/tools_common.c
@@ -0,0 +1,24 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include <stdio.h>
+#include "tools_common.h"
+#ifdef _WIN32
+#include <io.h>
+#include <fcntl.h>
+#endif
+
+FILE* set_binary_mode(FILE *stream)
+{
+    (void)stream;
+#ifdef _WIN32
+    _setmode(_fileno(stream), _O_BINARY);
+#endif
+    return stream;
+}

tools_common.h

diff --git a/tools_common.h b/tools_common.h
new file mode 100644
index 0000000..80c9747
--- /dev/null
+++ b/tools_common.h
@@ -0,0 +1,16 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef TOOLS_COMMON_H
+#define TOOLS_COMMON_H
+
+/* Sets a stdio stream into binary mode */
+FILE* set_binary_mode(FILE *stream);
+
+#endif

vpxdec.c

diff --git a/vpxdec.c b/vpxdec.c
index e8e4d5f..85ab206 100644
--- a/vpxdec.c
+++ b/vpxdec.c
@@ -35,6 +35,7 @@
 #if CONFIG_MD5
 #include "md5_utils.h"
 #endif
+#include "tools_common.h"
 #include "nestegg/include/nestegg/nestegg.h"
 
 #ifndef PATH_MAX
@@ -314,7 +315,8 @@
     }
     else
     {
-        FILE *outfile = out = strcmp("-", out_fn) ? fopen(out_fn, "wb") : stdout;
+        FILE *outfile = out = strcmp("-", out_fn) ? fopen(out_fn, "wb")
+                                                  : set_binary_mode(stdout);
 
         if (!outfile)
         {
@@ -805,7 +807,7 @@
         usage_exit();
 
     /* Open file */
-    infile = strcmp(fn, "-") ? fopen(fn, "rb") : stdin;
+    infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
 
     if (!infile)
     {

vpxenc.c

diff --git a/vpxenc.c b/vpxenc.c
index 7e05952..4cdadb6 100644
--- a/vpxenc.c
+++ b/vpxenc.c
@@ -35,6 +35,7 @@
 #include "vpx/vp8cx.h"
 #include "vpx_ports/mem_ops.h"
 #include "vpx_ports/vpx_timer.h"
+#include "tools_common.h"
 #include "y4minput.h"
 #include "libmkv/EbmlWriter.h"
 #include "libmkv/EbmlIDs.h"
@@ -1334,7 +1335,8 @@
         struct detect_buffer detect;
 
         /* Parse certain options from the input file, if possible */
-        infile = strcmp(in_fn, "-") ? fopen(in_fn, "rb") : stdin;
+        infile = strcmp(in_fn, "-") ? fopen(in_fn, "rb")
+                                    : set_binary_mode(stdin);
 
         if (!infile)
         {
@@ -1449,7 +1451,8 @@
                               cfg.g_w, cfg.g_h, 1);
         }
 
-        outfile = strcmp(out_fn, "-") ? fopen(out_fn, "wb") : stdout;
+        outfile = strcmp(out_fn, "-") ? fopen(out_fn, "wb")
+                                      : set_binary_mode(stdout);
 
         if (!outfile)
         {