GpuArcVideoService

chrome/browser/chromeos/arc/gpu_arc_video_service_host.h

+// Copyright 2016 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 CHROME_BROWSER_CHROMEOS_ARC_GPU_ARC_VIDEO_SERVICE_HOST_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_GPU_ARC_VIDEO_SERVICE_HOST_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/threading/thread_checker.h"
+#include "components/arc/arc_bridge_service.h"
+#include "components/arc/arc_service.h"
+#include "components/arc/common/video.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/interface_ptr_info.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace arc {
+
+// This class takes requests for creating channels of video accelerators from
+// arc::VideoInstance and forwards these requests to GpuArcVideoServce. It also
+// returns the created channels back to the arc::VideoInstance.
+//
+// This class is the proxy end of GpuArcVideoService and runs in the browser
+// process. The corresponding end "GpuArcVideoService" runs in the GPU process.
+class GpuArcVideoServiceHost : public arc::ArcService,
+                               public arc::ArcBridgeService::Observer,
+                               public arc::VideoHost {
+ public:
+  explicit GpuArcVideoServiceHost(arc::ArcBridgeService* bridge_service);
+  ~GpuArcVideoServiceHost() override;
+
+  // arc::ArcBridgeService::Observer implementation.
+  void OnVideoInstanceReady() override;
+  void OnVideoInstanceClosed() override;
+
+  // arc::VideoHost implementation.
+  void OnRequestArcVideoAcceleratorChannel(
+      uint32_t pid,
+      const OnRequestArcVideoAcceleratorChannelCallback& callback) override;
+
+ private:
+  void BindServiceAndCreateChannel(
+      uint32_t pid,
+      const OnRequestArcVideoAcceleratorChannelCallback& callback,
+      mojo::InterfacePtrInfo<arc::VideoHost>* ptr_info);
+
+  base::ThreadChecker thread_checker_;
+
+  mojo::Binding<arc::VideoHost> binding_;
+
+  // IO task runner, where GpuProcessHost tasks run.
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
+
+  arc::VideoHostPtr service_ptr_;
+
+  base::WeakPtrFactory<GpuArcVideoServiceHost> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuArcVideoServiceHost);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_GPU_ARC_VIDEO_SERVICE_HOST_H_