Video Capture Mojo (1.4b): Implement ability to use fake device instance

services/video_capture/device_client_mojo_to_media_adapter.h

Index: services/video_capture/device_client_mojo_to_media_adapter.h
diff --git a/services/video_capture/device_client_mojo_to_media_adapter.h b/services/video_capture/device_client_mojo_to_media_adapter.h
new file mode 100644
index 0000000000000000000000000000000000000000..916577b70575d265b061d22091471881f5b0c4b1
--- /dev/null
+++ b/services/video_capture/device_client_mojo_to_media_adapter.h
@@ -0,0 +1,65 @@
+// 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 SERVICES_VIDEO_CAPTURE_DEVICE_CLIENT_MOJO_TO_MEDIA_ADAPTER_H_
+#define SERVICES_VIDEO_CAPTURE_DEVICE_CLIENT_MOJO_TO_MEDIA_ADAPTER_H_
+
+#include "media/capture/video/video_capture_device.h"
+#include "services/video_capture/public/interfaces/video_capture_device_client.mojom.h"
+
+namespace media {
+class MojoSharedBufferVideoFrame;
+}
+
+namespace video_capture {
+
+// Adapter that allows a mojom::VideoCaptureDeviceClient to be used in place of
+// a media::VideoCaptureDevice::Client.
+class DeviceClientMojoToMediaAdapter
+    : public media::VideoCaptureDevice::Client {
+ public:
+  using VideoCaptureFormat = media::VideoCaptureFormat;
+  using VideoPixelFormat = media::VideoPixelFormat;
+  using VideoPixelStorage = media::VideoPixelStorage;
+  using VideoFrame = media::VideoFrame;
+
+  DeviceClientMojoToMediaAdapter(mojom::VideoCaptureDeviceClientPtr client);
+  ~DeviceClientMojoToMediaAdapter() override;
+
+  // media::VideoCaptureDevice::Client:
+  void OnIncomingCapturedData(const uint8_t* data,
+                              int length,
+                              const VideoCaptureFormat& frame_format,
+                              int clockwise_rotation,
+                              base::TimeTicks reference_time,
+                              base::TimeDelta timestamp) override;
+  std::unique_ptr<Buffer> ReserveOutputBuffer(
+      const gfx::Size& dimensions,
+      VideoPixelFormat format,
+      VideoPixelStorage storage) override;
+  void OnIncomingCapturedBuffer(std::unique_ptr<Buffer> buffer,
+                                const VideoCaptureFormat& frame_format,
+                                base::TimeTicks reference_time,
+                                base::TimeDelta timestamp) override;
+  void OnIncomingCapturedVideoFrame(
+      std::unique_ptr<Buffer> buffer,
+      const scoped_refptr<VideoFrame>& frame) override;
+  std::unique_ptr<Buffer> ResurrectLastOutputBuffer(
+      const gfx::Size& dimensions,
+      VideoPixelFormat format,
+      VideoPixelStorage storage) override;
+  void OnError(const tracked_objects::Location& from_here,
+               const std::string& reason) override;
+  double GetBufferPoolUtilization() const override;
+
+ private:
+  mojom::VideoCaptureDeviceClientPtr client_;
+  // TODO(chfremer): Remove when actual implementation is finished.
+  // https://crbug.com/584797
+  scoped_refptr<media::MojoSharedBufferVideoFrame> dummy_frame_;
+};
+
+}  // namespace video_capture
+
+#endif  // SERVICES_VIDEO_CAPTURE_DEVICE_CLIENT_MOJO_TO_MEDIA_ADAPTER_H_