Let clients interact with VideoCaptureDeviceClient instead of VideoCaptureDevice

services/video_capture/receiver_mojo_to_media_adapter.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 SERVICES_VIDEO_CAPTURE_RECEIVER_MOJO_TO_MEDIA_ADAPTER_H_
+#define SERVICES_VIDEO_CAPTURE_RECEIVER_MOJO_TO_MEDIA_ADAPTER_H_
+
+#include "media/capture/video/video_frame_receiver.h"
+#include "services/video_capture/public/interfaces/video_frame_receiver.mojom.h"
+
+namespace media {
+class MojoSharedBufferVideoFrame;
+}
+
+namespace video_capture {
+
+// Adapter that allows a mojom::VideoFrameReceiver to be used in place of
+// a media::VideoFrameReceiver.
+class ReceiverMojoToMediaAdapter : public media::VideoFrameReceiver {
+ public:
+  ReceiverMojoToMediaAdapter(mojom::VideoFrameReceiverPtr receiver,
+                             const media::VideoCaptureParams& params);
+  ~ReceiverMojoToMediaAdapter() override;
+
+  // media::VideoFrameReceiver:
+  void OnIncomingCapturedVideoFrame(
+      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer,
+      const scoped_refptr<media::VideoFrame>& frame) override;
+  void OnError() override;
+  void OnLog(const std::string& message) override;
+  void OnBufferDestroyed(int buffer_id_to_drop) override;
+
+ private:
+  mojom::VideoFrameReceiverPtr receiver_;
+  scoped_refptr<media::MojoSharedBufferVideoFrame> shared_buffer_frame_;
+};
+
+}  // namespace video_capture
+
+#endif  // SERVICES_VIDEO_CAPTURE_RECEIVER_MOJO_TO_MEDIA_ADAPTER_H_