[Mojo Video Capture] Implement a VideoCaptureProvider that uses the video capture service

content/browser/renderer_host/media/mojo_service_launched_video_capture_device.cc

+// Copyright 2017 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 "content/browser/renderer_host/media/mojo_service_launched_video_capture_device.h"
+
+// #include "content/public/browser/browser_thread.h"
+// #include "media/capture/video/video_frame_receiver_on_task_runner.h"
+// #include "mojo/public/cpp/bindings/strong_binding.h"
+// #include "services/video_capture/public/cpp/receiver_media_to_mojo_adapter.h"
+// #include
+// "services/video_capture/public/cpp/device_to_feedback_observer_adapter.h"
+
+namespace content {
+
+MojoServiceLaunchedVideoCaptureDevice::MojoServiceLaunchedVideoCaptureDevice(
+    video_capture::mojom::DevicePtr device)
+    : device_(std::move(device)) {
+  // Unretained |this| is safe, because |this| owns |device_|.
+  device_.set_connection_error_handler(base::Bind(
+      &MojoServiceLaunchedVideoCaptureDevice::OnLostConnectionToDevice,
+      base::Unretained(this)));
+}
+
+MojoServiceLaunchedVideoCaptureDevice::
+    ~MojoServiceLaunchedVideoCaptureDevice() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  device_.reset();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::GetPhotoCapabilities(
+    media::VideoCaptureDevice::GetPhotoCapabilitiesCallback callback) const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::SetPhotoOptions(
+    media::mojom::PhotoSettingsPtr settings,
+    media::VideoCaptureDevice::SetPhotoOptionsCallback callback) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::TakePhoto(
+    media::VideoCaptureDevice::TakePhotoCallback callback) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::MaybeSuspendDevice() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::ResumeDevice() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::RequestRefreshFrame() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  NOTIMPLEMENTED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::SetDesktopCaptureWindowIdAsync(
+    gfx::NativeViewId window_id,
+    base::OnceClosure done_cb) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  // This method should only be called for desktop capture devices.
+  // The video_capture Mojo service does not support desktop capture devices
+  // (yet) and should not be used for it.
+  NOTREACHED();
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::OnUtilizationReport(
+    int frame_feedback_id,
+    double utilization) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  device_->OnReceiverReportingUtilization(frame_feedback_id, utilization);
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::OnGetPhotoCapabilitiesResponse(
+    media::VideoCaptureDevice::GetPhotoCapabilitiesCallback callback,
+    media::mojom::PhotoCapabilitiesPtr capabilities) const {
+  callback.Run(std::move(capabilities));
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::OnSetPhotoOptionsResponse(
+    media::VideoCaptureDevice::SetPhotoOptionsCallback callback,
+    bool success) {
+  callback.Run(success);
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::OnTakePhotoResponse(
+    media::VideoCaptureDevice::TakePhotoCallback callback,
+    media::mojom::BlobPtr blob) {
+  callback.Run(std::move(blob));
+}
+
+void MojoServiceLaunchedVideoCaptureDevice::OnLostConnectionToDevice() {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace content