Index: media/base/media_win.cc |
diff --git a/media/base/media_win.cc b/media/base/media_win.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..03d78b1d454329bb0c8a8f648b3f0116ddcba75e |
--- /dev/null |
+++ b/media/base/media_win.cc |
@@ -0,0 +1,56 @@ |
+// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "media/base/media.h" |
+ |
+#include <windows.h> |
+#if defined(_WIN32_WINNT_WIN8) |
+// The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h. |
+#undef FACILITY_VISUALCPP |
+#endif |
+#include <delayimp.h> |
+ |
+#include "base/files/file_path.h" |
+#include "base/metrics/sparse_histogram.h" |
+#include "media/ffmpeg/ffmpeg_common.h" |
+ |
+#pragma comment(lib, "delayimp.lib") |
+ |
+namespace media { |
+namespace internal { |
+ |
+bool InitializeMediaLibraryInternal(const base::FilePath& module_dir) { |
+ // LoadLibraryEx(..., LOAD_WITH_ALTERED_SEARCH_PATH) cannot handle |
+ // relative path. |
+ if (!module_dir.IsAbsolute()) |
+ return false; |
+ |
+ // Use alternate DLL search path so we don't load dependencies from the |
+ // system path. Refer to http://crbug.com/35857 |
+ static const char kFFmpegDLL[] = "ffmpegsumo.dll"; |
+ HMODULE lib = ::LoadLibraryEx( |
+ module_dir.AppendASCII(kFFmpegDLL).value().c_str(), NULL, |
+ LOAD_WITH_ALTERED_SEARCH_PATH); |
+ |
+ bool initialized = (lib != NULL); |
+ |
+ // TODO(scherkus): Remove all the bool-ness from these functions as we no |
+ // longer support disabling HTML5 media at runtime. http://crbug.com/440892 |
+ if (!initialized) { |
+ UMA_HISTOGRAM_SPARSE_SLOWLY("Media.Initialize.Windows", GetLastError()); |
+ return false; |
+ } |
+ |
+ // VS2013 has a bug where FMA3 instructions will be executed on CPUs that |
+ // support them despite them being disabled at the OS level, causing illegal |
+ // instruction exceptions. Because Web Audio's FFT code *might* run before |
+ // HTML5 media code, call av_log_set_level() to force library initialziation. |
+ // See http://crbug.com/440892 for details. |
+ av_log_set_level(AV_LOG_QUIET); |
+ |
+ return initialized; |
+} |
+ |
+} // namespace internal |
+} // namespace media |