From a1dfa9a33c72c1e9534593bc37de636fd7ddd28e Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Fri, 12 May 2017 21:17:09 +0100
Subject: [PATCH] Try to fix windows build failure (#1071).

---
 src/lib/cross.cc          | 18 ++++++++++++++++++
 src/lib/cross.h           |  2 ++
 src/lib/ffmpeg_encoder.cc |  3 ++-
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/lib/cross.cc b/src/lib/cross.cc
index 454fe044c..a484d1738 100644
--- a/src/lib/cross.cc
+++ b/src/lib/cross.cc
@@ -22,6 +22,9 @@
 #include "compose.hpp"
 #include "log.h"
 #include "exceptions.h"
+extern "C" {
+#include <libavformat/avio.h>
+}
 #include <boost/algorithm/string.hpp>
 #ifdef DCPOMATIC_LINUX
 #include <unistd.h>
@@ -406,3 +409,18 @@ thread_id ()
 	return (uint64_t) pthread_self ();
 #endif
 }
+
+int
+avio_open_boost (AVIOContext** s, boost::filesystem::path file, int flags)
+{
+#ifdef DCPOMATIC_WINDOWS
+	int const length = (file.length() + 1) * 2;
+	char* utf8 = new char[length];
+	WideCharToMultibyte (CP_UTF8, 0, file.c_str(), -1, utf8, length, 0, 0);
+	int const r = avio_open_boost (s, file.c_str(), flags);
+	delete[] utf8;
+	return r;
+#else
+	return avio_open_boost (s, file.c_str(), flags);
+#endif
+}
diff --git a/src/lib/cross.h b/src/lib/cross.h
index 9fac7e643..02839eb68 100644
--- a/src/lib/cross.h
+++ b/src/lib/cross.h
@@ -35,6 +35,7 @@
 #endif
 
 class Log;
+struct AVIOContext;
 
 void dcpomatic_sleep (int);
 extern std::string cpu_info ();
@@ -49,6 +50,7 @@ extern FILE * fopen_boost (boost::filesystem::path, std::string);
 extern int dcpomatic_fseek (FILE *, int64_t, int);
 extern void start_batch_converter (boost::filesystem::path dcpomatic);
 extern uint64_t thread_id ();
+extern int avio_open_boost (AVIOContext** s, boost::filesystem::path file, int flags);
 
 /** @class Waker
  *  @brief A class which tries to keep the computer awake on various operating systems.
diff --git a/src/lib/ffmpeg_encoder.cc b/src/lib/ffmpeg_encoder.cc
index 8464faf7d..f26f66bff 100644
--- a/src/lib/ffmpeg_encoder.cc
+++ b/src/lib/ffmpeg_encoder.cc
@@ -25,6 +25,7 @@
 #include "player_video.h"
 #include "log.h"
 #include "image.h"
+#include "cross.h"
 #include "compose.hpp"
 #include <iostream>
 
@@ -159,7 +160,7 @@ FFmpegEncoder::go ()
 		throw runtime_error (String::compose ("could not open FFmpeg audio codec (%1)", buffer));
 	}
 
-	if (avio_open (&_format_context->pb, _output.c_str(), AVIO_FLAG_WRITE) < 0) {
+	if (avio_open_boost (&_format_context->pb, _output, AVIO_FLAG_WRITE) < 0) {
 		throw runtime_error ("could not open FFmpeg output file");
 	}
 
-- 
2.30.2