Let clients interact with VideoCaptureDeviceClient instead of VideoCaptureDevice

services/video_capture/receiver_mojo_to_media_adapter.cc

Index: services/video_capture/receiver_mojo_to_media_adapter.cc
diff --git a/services/video_capture/receiver_mojo_to_media_adapter.cc b/services/video_capture/receiver_mojo_to_media_adapter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..437c95ae3f830be0d1afa4223a58be2917f446e5
--- /dev/null
+++ b/services/video_capture/receiver_mojo_to_media_adapter.cc
@@ -0,0 +1,44 @@
+// 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.
+
+#include "services/video_capture/receiver_mojo_to_media_adapter.h"
+
+#include "media/mojo/common/media_type_converters.h"
+#include "media/mojo/common/mojo_shared_buffer_video_frame.h"
+
+namespace video_capture {
+
+ReceiverMojoToMediaAdapter::ReceiverMojoToMediaAdapter(
+    mojom::VideoFrameReceiverPtr receiver,
+    const media::VideoCaptureParams& params)
+    : receiver_(std::move(receiver)) {
+  // TODO: remove |params| if not needed

[mcasas, 2016/10/05 17:24:00]

Not needed now, right? Remove.

[chfremer, 2016/10/05 23:30:28]

Done.

+}
+
+ReceiverMojoToMediaAdapter::~ReceiverMojoToMediaAdapter() = default;
+
+void ReceiverMojoToMediaAdapter::OnIncomingCapturedVideoFrame(
+    std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer,
+    const scoped_refptr<media::VideoFrame>& frame) {
+  // O: |frame| should already be backed by a MojoSharedBufferVideoFrame
+  //    assuming we have used the correct buffer factory with the pool.
+  // TODO: what do we do for GPU memory buffers?
+  auto video_frame_ptr = media::mojom::VideoFrame::From(frame);
+  receiver_->OnIncomingCapturedVideoFrame(std::move(video_frame_ptr));
+}
+
+void ReceiverMojoToMediaAdapter::OnError() {
+  receiver_->OnError();
+}
+
+void ReceiverMojoToMediaAdapter::OnLog(const std::string& message) {
+  receiver_->OnLog(message);
+}
+
+void ReceiverMojoToMediaAdapter::OnBufferDestroyed(int buffer_id_to_drop) {
+  // TODO: is this needed?
+  // Q: How does client tell service that it is finished with a buffer?

[mcasas, 2016/10/05 17:24:00]

This Qs have to turn into TODOs or, if observations
 (l.24), then just write prose.

[chfremer, 2016/10/05 23:30:28]

Done.

+}
+
+}  // namespace video_capture