1 files changed, 83 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPUtils.h b/dom/media/gmp/GMPUtils.h
new file mode 100644
index 0000000000..0ac097420c
--- /dev/null
+++ b/dom/media/gmp/GMPUtils.h
@@ -0,0 +1,83 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GMPUtils_h_
+#define GMPUtils_h_
+
+#include "mozilla/AbstractThread.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "nsCOMPtr.h"
+#include "nsClassHashtable.h"
+#include "nsStringFwd.h"
+#include "nsTArray.h"
+
+#define CHROMIUM_CDM_API_BACKWARD_COMPAT "chromium-cdm9-host4"
+#define CHROMIUM_CDM_API "chromium-cdm10-host4"
+
+class nsIFile;
+class nsIDirectoryEnumerator;
+
+namespace mozilla {
+
+template <typename T>
+struct DestroyPolicy {
+  void operator()(T* aGMPObject) const { aGMPObject->Destroy(); }
+};
+
+template <typename T>
+using GMPUniquePtr = mozilla::UniquePtr<T, DestroyPolicy<T>>;
+
+void SplitAt(const char* aDelims, const nsACString& aInput,
+             nsTArray<nsCString>& aOutTokens);
+
+nsCString ToHexString(const nsTArray<uint8_t>& aBytes);
+
+nsCString ToHexString(const uint8_t* aBytes, uint32_t aLength);
+
+bool FileExists(nsIFile* aFile);
+
+// Enumerate directory entries for a specified path.
+class DirectoryEnumerator {
+ public:
+  enum Mode {
+    DirsOnly,     // Enumeration only includes directories.
+    FilesAndDirs  // Enumeration includes directories and non-directory files.
+  };
+
+  DirectoryEnumerator(nsIFile* aPath, Mode aMode);
+
+  already_AddRefed<nsIFile> Next();
+
+ private:
+  Mode mMode;
+  nsCOMPtr<nsIDirectoryEnumerator> mIter;
+};
+
+class GMPInfoFileParser {
+ public:
+  bool Init(nsIFile* aFile);
+  bool Contains(const nsCString& aKey) const;
+  nsCString Get(const nsCString& aKey) const;
+
+ private:
+  nsClassHashtable<nsCStringHashKey, nsCString> mValues;
+};
+
+bool ReadIntoString(nsIFile* aFile, nsCString& aOutDst, size_t aMaxLength);
+
+bool HaveGMPFor(const nsACString& aAPI, const nsTArray<nsCString>& aTags);
+
+void LogToConsole(const nsAString& aMsg);
+
+already_AddRefed<nsISerialEventTarget> GetGMPThread();
+
+// Returns the number of bytes required to store an aWidth x aHeight image in
+// I420 format, padded so that the width and height are multiples of 16.
+size_t I420FrameBufferSizePadded(int32_t aWidth, int32_t aHeight);
+
+}  // namespace mozilla
+
+#endif