1 files changed, 136 insertions, 0 deletions
diff --git a/dom/presentation/provider/DisplayDeviceProvider.h b/dom/presentation/provider/DisplayDeviceProvider.h
new file mode 100644
index 000000000..ebd5db394
--- /dev/null
+++ b/dom/presentation/provider/DisplayDeviceProvider.h
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 mozilla_dom_presentation_provider_DisplayDeviceProvider_h
+#define mozilla_dom_presentation_provider_DisplayDeviceProvider_h
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/WeakPtr.h"
+#include "nsCOMPtr.h"
+#include "nsIDOMWindow.h"
+#include "nsIDisplayInfo.h"
+#include "nsIObserver.h"
+#include "nsIPresentationDeviceProvider.h"
+#include "nsIPresentationLocalDevice.h"
+#include "nsIPresentationControlService.h"
+#include "nsITimer.h"
+#include "nsIWindowWatcher.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "nsWeakReference.h"
+
+namespace mozilla {
+namespace dom {
+namespace presentation {
+
+// Consistent definition with the definition in
+// widget/gonk/libdisplay/GonkDisplay.h.
+enum DisplayType {
+    DISPLAY_PRIMARY,
+    DISPLAY_EXTERNAL,
+    DISPLAY_VIRTUAL,
+    NUM_DISPLAY_TYPES
+};
+
+class DisplayDeviceProviderWrappedListener;
+
+class DisplayDeviceProvider final : public nsIObserver
+                                  , public nsIPresentationDeviceProvider
+                                  , public nsIPresentationControlServerListener
+                                  , public SupportsWeakPtr<DisplayDeviceProvider>
+{
+private:
+  class HDMIDisplayDevice final : public nsIPresentationLocalDevice
+  {
+  public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSIPRESENTATIONDEVICE
+    NS_DECL_NSIPRESENTATIONLOCALDEVICE
+
+    // mScreenId is as same as the definition of display type.
+    explicit HDMIDisplayDevice(DisplayDeviceProvider* aProvider)
+      : mScreenId(DisplayType::DISPLAY_EXTERNAL)
+      , mName("HDMI")
+      , mType("external")
+      , mWindowId("hdmi")
+      , mAddress("127.0.0.1")
+      , mProvider(aProvider)
+    {}
+
+    nsresult OpenTopLevelWindow();
+    nsresult CloseTopLevelWindow();
+
+    const nsCString& Id() const { return mWindowId; }
+    const nsCString& Address() const { return mAddress; }
+
+  private:
+    virtual ~HDMIDisplayDevice() = default;
+
+    // Due to the limitation of nsWinodw, mScreenId must be an integer.
+    // And mScreenId is also align to the display type defined in
+    // widget/gonk/libdisplay/GonkDisplay.h.
+    // HDMI display is DisplayType::DISPLAY_EXTERNAL.
+    uint32_t mScreenId;
+    nsCString mName;
+    nsCString mType;
+    nsCString mWindowId;
+    nsCString mAddress;
+
+    nsCOMPtr<mozIDOMWindowProxy> mWindow;
+    // weak pointer
+    // Provider hold a strong pointer to the device. Use weak pointer to prevent
+    // the reference cycle.
+    WeakPtr<DisplayDeviceProvider> mProvider;
+  };
+
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSIPRESENTATIONDEVICEPROVIDER
+  NS_DECL_NSIPRESENTATIONCONTROLSERVERLISTENER
+  // For using WeakPtr when MOZ_REFCOUNTED_LEAK_CHECKING defined
+  MOZ_DECLARE_WEAKREFERENCE_TYPENAME(DisplayDeviceProvider)
+
+  nsresult Connect(HDMIDisplayDevice* aDevice,
+                   nsIPresentationControlChannel** aControlChannel);
+private:
+  virtual ~DisplayDeviceProvider();
+
+  nsresult Init();
+  nsresult Uninit();
+
+  nsresult AddExternalScreen();
+  nsresult RemoveExternalScreen();
+
+  nsresult StartTCPService();
+
+  void AbortServerRetry();
+
+  // Now support HDMI display only and there should be only one HDMI display.
+  nsCOMPtr<nsIPresentationLocalDevice> mDevice = nullptr;
+  // weak pointer
+  // PresentationDeviceManager (mDeviceListener) hold strong pointer to
+  // DisplayDeviceProvider. Use nsWeakPtr to avoid reference cycle.
+  nsWeakPtr mDeviceListener = nullptr;
+  nsCOMPtr<nsIPresentationControlService> mPresentationService;
+  // Used to prevent reference cycle between DisplayDeviceProvider and
+  // TCPPresentationServer.
+  RefPtr<DisplayDeviceProviderWrappedListener> mWrappedListener;
+
+  bool mInitialized = false;
+  uint16_t mPort;
+
+  bool mIsServerRetrying = false;
+  uint32_t mServerRetryMs;
+  nsCOMPtr<nsITimer> mServerRetryTimer;
+};
+
+} // mozilla
+} // dom
+} // presentation
+
+#endif // mozilla_dom_presentation_provider_DisplayDeviceProvider_h
+