1 files changed, 112 insertions, 0 deletions
diff --git a/dom/media/platforms/agnostic/gmp/GMPAudioDecoder.h b/dom/media/platforms/agnostic/gmp/GMPAudioDecoder.h
new file mode 100644
index 000000000..90e3ebdb6
--- /dev/null
+++ b/dom/media/platforms/agnostic/gmp/GMPAudioDecoder.h
@@ -0,0 +1,112 @@
+/* -*- 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(GMPAudioDecoder_h_)
+#define GMPAudioDecoder_h_
+
+#include "GMPAudioDecoderProxy.h"
+#include "MediaDataDecoderProxy.h"
+#include "PlatformDecoderModule.h"
+#include "mozIGeckoMediaPluginService.h"
+#include "nsAutoPtr.h"
+
+namespace mozilla {
+
+class AudioCallbackAdapter : public GMPAudioDecoderCallbackProxy {
+public:
+  explicit AudioCallbackAdapter(MediaDataDecoderCallbackProxy* aCallback)
+   : mCallback(aCallback)
+   , mLastStreamOffset(0)
+   , mAudioFrameSum(0)
+   , mAudioFrameOffset(0)
+   , mMustRecaptureAudioPosition(true)
+  {}
+
+  MediaDataDecoderCallbackProxy* Callback() const { return mCallback; }
+
+  // GMPAudioDecoderCallbackProxy
+  void Decoded(const nsTArray<int16_t>& aPCM, uint64_t aTimeStamp, uint32_t aChannels, uint32_t aRate) override;
+  void InputDataExhausted() override;
+  void DrainComplete() override;
+  void ResetComplete() override;
+  void Error(GMPErr aErr) override;
+  void Terminated() override;
+
+  void SetLastStreamOffset(int64_t aStreamOffset) {
+    mLastStreamOffset = aStreamOffset;
+  }
+
+private:
+  MediaDataDecoderCallbackProxy* mCallback;
+  int64_t mLastStreamOffset;
+
+  int64_t mAudioFrameSum;
+  int64_t mAudioFrameOffset;
+  bool mMustRecaptureAudioPosition;
+};
+
+struct GMPAudioDecoderParams {
+  explicit GMPAudioDecoderParams(const CreateDecoderParams& aParams);
+  GMPAudioDecoderParams& WithCallback(MediaDataDecoderProxy* aWrapper);
+  GMPAudioDecoderParams& WithAdapter(AudioCallbackAdapter* aAdapter);
+
+  const AudioInfo& mConfig;
+  TaskQueue* mTaskQueue;
+  MediaDataDecoderCallbackProxy* mCallback;
+  AudioCallbackAdapter* mAdapter;
+  RefPtr<GMPCrashHelper> mCrashHelper;
+};
+
+class GMPAudioDecoder : public MediaDataDecoder {
+public:
+  explicit GMPAudioDecoder(const GMPAudioDecoderParams& aParams);
+
+  RefPtr<InitPromise> Init() override;
+  void Input(MediaRawData* aSample) override;
+  void Flush() override;
+  void Drain() override;
+  void Shutdown() override;
+  const char* GetDescriptionName() const override
+  {
+    return "GMP audio decoder";
+  }
+
+protected:
+  virtual void InitTags(nsTArray<nsCString>& aTags);
+  virtual nsCString GetNodeId();
+
+private:
+
+  class GMPInitDoneCallback : public GetGMPAudioDecoderCallback
+  {
+  public:
+    explicit GMPInitDoneCallback(GMPAudioDecoder* aDecoder)
+      : mDecoder(aDecoder)
+    {
+    }
+
+    void Done(GMPAudioDecoderProxy* aGMP) override
+    {
+      mDecoder->GMPInitDone(aGMP);
+    }
+
+  private:
+    RefPtr<GMPAudioDecoder> mDecoder;
+  };
+  void GMPInitDone(GMPAudioDecoderProxy* aGMP);
+
+  const AudioInfo mConfig;
+  MediaDataDecoderCallbackProxy* mCallback;
+  nsCOMPtr<mozIGeckoMediaPluginService> mMPS;
+  GMPAudioDecoderProxy* mGMP;
+  nsAutoPtr<AudioCallbackAdapter> mAdapter;
+  MozPromiseHolder<InitPromise> mInitPromise;
+  RefPtr<GMPCrashHelper> mCrashHelper;
+};
+
+} // namespace mozilla
+
+#endif // GMPAudioDecoder_h_