1 files changed, 61 insertions, 0 deletions
diff --git a/dom/media/ogg/OggDecoder.h b/dom/media/ogg/OggDecoder.h
new file mode 100644
index 000000000..3a98f2918
--- /dev/null
+++ b/dom/media/ogg/OggDecoder.h
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+#if !defined(OggDecoder_h_)
+#define OggDecoder_h_
+
+#include "MediaDecoder.h"
+
+namespace mozilla {
+
+class OggDecoder : public MediaDecoder
+{
+public:
+  explicit OggDecoder(MediaDecoderOwner* aOwner)
+    : MediaDecoder(aOwner)
+    , mShutdownBitMonitor("mShutdownBitMonitor")
+    , mShutdownBit(false)
+  {}
+
+  MediaDecoder* Clone(MediaDecoderOwner* aOwner) override {
+    if (!IsOggEnabled()) {
+      return nullptr;
+    }
+    return new OggDecoder(aOwner);
+  }
+  MediaDecoderStateMachine* CreateStateMachine() override;
+
+  // For yucky legacy reasons, the ogg decoder needs to do a cross-thread read
+  // to check for shutdown while it hogs its own task queue. We don't want to
+  // protect the general state with a lock, so we make a special copy and a
+  // special-purpose lock. This method may be called on any thread.
+  bool IsOggDecoderShutdown() override
+  {
+    MonitorAutoLock lock(mShutdownBitMonitor);
+    return mShutdownBit;
+  }
+
+  // Returns true if aMIMEType is a type that we think we can render with the
+  // a platform decoder backend. If aCodecs is non emtpy, it is filled
+  // with a comma-delimited list of codecs to check support for.
+  static bool CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
+                                 const nsAString& aCodecs);
+
+  static bool IsEnabled();
+
+protected:
+  void ShutdownBitChanged() override
+  {
+    MonitorAutoLock lock(mShutdownBitMonitor);
+    mShutdownBit = mStateMachineIsShutdown;
+  }
+
+  Monitor mShutdownBitMonitor;
+  bool mShutdownBit;
+};
+
+} // namespace mozilla
+
+#endif