chromeos: Add SurfaceServiceProvider.

chromeos/dbus/services/surface_service_provider.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMEOS_DBUS_SERVICES_SURFACE_SERVICE_PROVIDER_H_
+#define CHROMEOS_DBUS_SERVICES_SURFACE_SERVICE_PROVIDER_H_
+
+#include <string>
+
+#include "base/files/scoped_file.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/services/cros_dbus_service.h"
+#include "dbus/exported_object.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace chromeos {
+
+class CHROMEOS_EXPORT SurfaceServiceProvider
+    : public CrosDBusService::ServiceProviderInterface {
+ public:
+  class Delegate {
+   public:
+    using GraphicsBufferCreatedCallback = base::Callback<void(int32 buffer)>;
+
+    virtual ~Delegate() {}
+
+    // Functions for creating and destroying graphics buffers.
+    virtual void CreateGraphicsBufferFromUnixFd(
+        const gfx::Size& size,
+        base::ScopedFD fd,
+        int32 stride,
+        const GraphicsBufferCreatedCallback& callback) = 0;
+    virtual void DestroyGraphicsBuffer(int32 buffer) = 0;
+
+    // Set contents of the test surface to |buffer|.
+    virtual void SetTestSurfaceContents(int32 buffer) = 0;
+  };
+
+  explicit SurfaceServiceProvider(scoped_ptr<Delegate> delegate);
+  ~SurfaceServiceProvider() override;
+
+  // CrosDBusService::ServiceProviderInterface overrides:
+  void Start(scoped_refptr<dbus::ExportedObject> exported_object) override;
+
+ private:
+  void CreateGraphicsBufferFromUnixFd(
+      dbus::MethodCall* method_call,
+      dbus::ExportedObject::ResponseSender response_sender);
+  void DestroyGraphicsBuffer(
+      dbus::MethodCall* method_call,
+      dbus::ExportedObject::ResponseSender response_sender);
+  void SetTestSurfaceContents(
+      dbus::MethodCall* method_call,
+      dbus::ExportedObject::ResponseSender response_sender);
+
+  // This method is called when a dbus method is exported.  If the export of the
+  // method is successful, |success| will be true.  It will be false
+  // otherwise.
+  void OnExported(const std::string& interface_name,
+                  const std::string& method_name,
+                  bool success);
+
+  scoped_ptr<Delegate> delegate_;
+  base::WeakPtrFactory<SurfaceServiceProvider> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(SurfaceServiceProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_SERVICES_SURFACE_SERVICE_PROVIDER_H_