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diff --git a/media/gmp-clearkey/0.1/AudioDecoder.h b/media/gmp-clearkey/0.1/AudioDecoder.h
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+/*
+ * Copyright 2015, Mozilla Foundation and contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __AudioDecoder_h__
+#define __AudioDecoder_h__
+
+#include "gmp-audio-decode.h"
+#include "gmp-audio-host.h"
+#include "gmp-task-utils.h"
+#include "WMFAACDecoder.h"
+#include "RefCounted.h"
+
+#include "mfobjects.h"
+
+class AudioDecoder : public GMPAudioDecoder
+ , public RefCounted
+{
+public:
+ AudioDecoder(GMPAudioHost *aHostAPI);
+
+ virtual void InitDecode(const GMPAudioCodec& aCodecSettings,
+ GMPAudioDecoderCallback* aCallback) override;
+
+ virtual void Decode(GMPAudioSamples* aEncodedSamples);
+
+ virtual void Reset() override;
+
+ virtual void Drain() override;
+
+ virtual void DecodingComplete() override;
+
+ bool HasShutdown() { return mHasShutdown; }
+
+private:
+ virtual ~AudioDecoder();
+
+ void EnsureWorker();
+
+ void DecodeTask(GMPAudioSamples* aEncodedSamples);
+ void DrainTask();
+
+ void ReturnOutput(IMFSample* aSample);
+
+ HRESULT MFToGMPSample(IMFSample* aSample,
+ GMPAudioSamples* aAudioFrame);
+
+ void MaybeRunOnMainThread(GMPTask* aTask);
+
+ GMPAudioHost *mHostAPI; // host-owned, invalid at DecodingComplete
+ GMPAudioDecoderCallback* mCallback; // host-owned, invalid at DecodingComplete
+ GMPThread* mWorkerThread;
+ GMPMutex* mMutex;
+ wmf::AutoPtr<wmf::WMFAACDecoder> mDecoder;
+
+ int32_t mNumInputTasks;
+
+ bool mHasShutdown;
+};
+
+#endif // __AudioDecoder_h__