From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../platforms/agnostic/gmp/MediaDataDecoderProxy.h | 181 +++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 dom/media/platforms/agnostic/gmp/MediaDataDecoderProxy.h

(limited to 'dom/media/platforms/agnostic/gmp/MediaDataDecoderProxy.h')

diff --git a/dom/media/platforms/agnostic/gmp/MediaDataDecoderProxy.h b/dom/media/platforms/agnostic/gmp/MediaDataDecoderProxy.h
new file mode 100644
index 000000000..735b6126e
--- /dev/null
+++ b/dom/media/platforms/agnostic/gmp/MediaDataDecoderProxy.h
@@ -0,0 +1,181 @@
+/* -*- 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(MediaDataDecoderProxy_h_)
+#define MediaDataDecoderProxy_h_
+
+#include "PlatformDecoderModule.h"
+#include "mozilla/RefPtr.h"
+#include "nsThreadUtils.h"
+#include "nscore.h"
+#include "GMPService.h"
+
+namespace mozilla {
+
+class InputTask : public Runnable {
+public:
+  InputTask(MediaDataDecoder* aDecoder,
+            MediaRawData* aSample)
+   : mDecoder(aDecoder)
+   , mSample(aSample)
+  {}
+
+  NS_IMETHOD Run() override {
+    mDecoder->Input(mSample);
+    return NS_OK;
+  }
+
+private:
+  RefPtr<MediaDataDecoder> mDecoder;
+  RefPtr<MediaRawData> mSample;
+};
+
+template<typename T>
+class Condition {
+public:
+  explicit Condition(T aValue)
+   : mMonitor("Condition")
+   , mCondition(aValue)
+  {}
+
+  void Set(T aValue) {
+    MonitorAutoLock mon(mMonitor);
+    mCondition = aValue;
+    mon.NotifyAll();
+  }
+
+  void WaitUntil(T aValue) {
+    MonitorAutoLock mon(mMonitor);
+    while (mCondition != aValue) {
+      mon.Wait();
+    }
+  }
+
+private:
+  Monitor mMonitor;
+  T mCondition;
+};
+
+class MediaDataDecoderProxy;
+
+class MediaDataDecoderCallbackProxy : public MediaDataDecoderCallback {
+public:
+  MediaDataDecoderCallbackProxy(MediaDataDecoderProxy* aProxyDecoder,
+                                MediaDataDecoderCallback* aCallback)
+   : mProxyDecoder(aProxyDecoder)
+   , mProxyCallback(aCallback)
+  {
+  }
+
+  void Output(MediaData* aData) override {
+    mProxyCallback->Output(aData);
+  }
+
+  void Error(const MediaResult& aError) override;
+
+  void InputExhausted() override {
+    mProxyCallback->InputExhausted();
+  }
+
+  void DrainComplete() override {
+    mProxyCallback->DrainComplete();
+  }
+
+  void ReleaseMediaResources() override {
+    mProxyCallback->ReleaseMediaResources();
+  }
+
+  void FlushComplete();
+
+  bool OnReaderTaskQueue() override
+  {
+    return mProxyCallback->OnReaderTaskQueue();
+  }
+
+  void WaitingForKey() override
+  {
+    mProxyCallback->WaitingForKey();
+  }
+
+private:
+  MediaDataDecoderProxy* mProxyDecoder;
+  MediaDataDecoderCallback* mProxyCallback;
+};
+
+class MediaDataDecoderProxy : public MediaDataDecoder {
+public:
+  MediaDataDecoderProxy(already_AddRefed<AbstractThread> aProxyThread,
+                        MediaDataDecoderCallback* aCallback)
+   : mProxyThread(aProxyThread)
+   , mProxyCallback(this, aCallback)
+   , mFlushComplete(false)
+#if defined(DEBUG)
+   , mIsShutdown(false)
+#endif
+  {
+  }
+
+  // Ideally, this would return a regular MediaDataDecoderCallback pointer
+  // to retain the clean abstraction, but until MediaDataDecoderCallback
+  // supports the FlushComplete interface, this will have to do.  When MDDC
+  // supports FlushComplete, this, the GMP*Decoders, and the
+  // *CallbackAdapters can be reverted to accepting a regular
+  // MediaDataDecoderCallback pointer.
+  MediaDataDecoderCallbackProxy* Callback()
+  {
+    return &mProxyCallback;
+  }
+
+  void SetProxyTarget(MediaDataDecoder* aProxyDecoder)
+  {
+    MOZ_ASSERT(aProxyDecoder);
+    mProxyDecoder = aProxyDecoder;
+  }
+
+  // These are called from the decoder thread pool.
+  // Init and Shutdown run synchronously on the proxy thread, all others are
+  // asynchronously and responded to via the MediaDataDecoderCallback.
+  // Note: the nsresults returned by the proxied decoder are lost.
+  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 proxy data decoder";
+  }
+
+  // Called by MediaDataDecoderCallbackProxy.
+  void FlushComplete();
+
+private:
+  RefPtr<InitPromise> InternalInit();
+
+#ifdef DEBUG
+  bool IsOnProxyThread() {
+    return mProxyThread && mProxyThread->IsCurrentThreadIn();
+  }
+#endif
+
+  friend class InputTask;
+  friend class InitTask;
+
+  RefPtr<MediaDataDecoder> mProxyDecoder;
+  RefPtr<AbstractThread> mProxyThread;
+
+  MediaDataDecoderCallbackProxy mProxyCallback;
+
+  Condition<bool> mFlushComplete;
+#if defined(DEBUG)
+  bool mIsShutdown;
+#endif
+};
+
+} // namespace mozilla
+
+#endif // MediaDataDecoderProxy_h_
-- 
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