| // Copyright (c) 2012 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/video_capture_host.h" |
| |
| #include <memory> |
| |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/task/post_task.h" |
| #include "content/browser/browser_main_loop.h" |
| #include "content/browser/renderer_host/media/media_stream_manager.h" |
| #include "content/browser/renderer_host/media/video_capture_manager.h" |
| #include "content/public/browser/browser_task_traits.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "mojo/public/cpp/bindings/strong_binding.h" |
| |
| namespace content { |
| |
| VideoCaptureHost::RenderProcessHostDelegate::~RenderProcessHostDelegate() = |
| default; |
| |
| // Looks up a RenderProcessHost on demand based on a given |render_process_id| |
| // and invokes OnMediaStreamAdded() and OnMediaStreamRemoved(). It should be |
| // called and destroyed on UI thread. |
| class VideoCaptureHost::RenderProcessHostDelegateImpl |
| : public VideoCaptureHost::RenderProcessHostDelegate { |
| public: |
| explicit RenderProcessHostDelegateImpl(uint32_t render_process_id) |
| : render_process_id_(render_process_id) {} |
| |
| ~RenderProcessHostDelegateImpl() override { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| } |
| |
| // Helper functions that are used for notifying Browser-side RenderProcessHost |
| // if renderer is currently consuming video capture. This information is then |
| // used to determine if the renderer process should be backgrounded or not. |
| void NotifyStreamAdded() override { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| RenderProcessHost* host = RenderProcessHost::FromID(render_process_id_); |
| if (host) |
| host->OnMediaStreamAdded(); |
| } |
| |
| void NotifyStreamRemoved() override { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| RenderProcessHost* host = RenderProcessHost::FromID(render_process_id_); |
| if (host) |
| host->OnMediaStreamRemoved(); |
| } |
| |
| private: |
| const uint32_t render_process_id_; |
| DISALLOW_COPY_AND_ASSIGN(RenderProcessHostDelegateImpl); |
| }; |
| |
| VideoCaptureHost::VideoCaptureHost(uint32_t render_process_id, |
| MediaStreamManager* media_stream_manager) |
| : VideoCaptureHost( |
| std::make_unique<RenderProcessHostDelegateImpl>(render_process_id), |
| media_stream_manager) {} |
| |
| VideoCaptureHost::VideoCaptureHost( |
| std::unique_ptr<RenderProcessHostDelegate> delegate, |
| MediaStreamManager* media_stream_manager) |
| : render_process_host_delegate_(std::move(delegate)), |
| media_stream_manager_(media_stream_manager), |
| weak_factory_(this) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| } |
| |
| // static |
| void VideoCaptureHost::Create(uint32_t render_process_id, |
| MediaStreamManager* media_stream_manager, |
| media::mojom::VideoCaptureHostRequest request) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| mojo::MakeStrongBinding(std::make_unique<VideoCaptureHost>( |
| render_process_id, media_stream_manager), |
| std::move(request)); |
| } |
| |
| VideoCaptureHost::~VideoCaptureHost() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| for (auto it = controllers_.begin(); it != controllers_.end(); ) { |
| const base::WeakPtr<VideoCaptureController>& controller = it->second; |
| if (controller) { |
| const VideoCaptureControllerID controller_id(it->first); |
| media_stream_manager_->video_capture_manager()->DisconnectClient( |
| controller.get(), controller_id, this, |
| media::VideoCaptureError::kNone); |
| ++it; |
| } else { |
| // Remove the entry for this controller_id so that when the controller |
| // is added, the controller will be notified to stop for this client |
| // in DoControllerAdded. |
| controllers_.erase(it++); |
| } |
| } |
| |
| NotifyAllStreamsRemoved(); |
| BrowserThread::DeleteSoon(BrowserThread::UI, FROM_HERE, |
| render_process_host_delegate_.release()); |
| } |
| |
| void VideoCaptureHost::OnError(VideoCaptureControllerID controller_id, |
| media::VideoCaptureError error) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::IO}, |
| base::BindOnce(&VideoCaptureHost::DoError, weak_factory_.GetWeakPtr(), |
| controller_id, error)); |
| } |
| |
| void VideoCaptureHost::OnNewBuffer( |
| VideoCaptureControllerID controller_id, |
| media::mojom::VideoBufferHandlePtr buffer_handle, |
| int buffer_id) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) { |
| device_id_to_observer_map_[controller_id]->OnNewBuffer( |
| buffer_id, std::move(buffer_handle)); |
| } |
| } |
| |
| void VideoCaptureHost::OnBufferDestroyed(VideoCaptureControllerID controller_id, |
| int buffer_id) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) |
| device_id_to_observer_map_[controller_id]->OnBufferDestroyed(buffer_id); |
| } |
| |
| void VideoCaptureHost::OnBufferReady( |
| VideoCaptureControllerID controller_id, |
| int buffer_id, |
| const media::mojom::VideoFrameInfoPtr& frame_info) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (!base::ContainsKey(device_id_to_observer_map_, controller_id)) |
| return; |
| |
| device_id_to_observer_map_[controller_id]->OnBufferReady(buffer_id, |
| frame_info.Clone()); |
| } |
| |
| void VideoCaptureHost::OnEnded(VideoCaptureControllerID controller_id) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::IO}, |
| base::BindOnce(&VideoCaptureHost::DoEnded, weak_factory_.GetWeakPtr(), |
| controller_id)); |
| } |
| |
| void VideoCaptureHost::OnStarted(VideoCaptureControllerID controller_id) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) { |
| device_id_to_observer_map_[controller_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::STARTED); |
| NotifyStreamAdded(); |
| } |
| } |
| |
| void VideoCaptureHost::OnStartedUsingGpuDecode(VideoCaptureControllerID id) {} |
| |
| void VideoCaptureHost::Start(int32_t device_id, |
| int32_t session_id, |
| const media::VideoCaptureParams& params, |
| media::mojom::VideoCaptureObserverPtr observer) { |
| DVLOG(1) << __func__ << " session_id=" << session_id |
| << ", device_id=" << device_id << ", format=" |
| << media::VideoCaptureFormat::ToString(params.requested_format); |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| DCHECK(!base::ContainsKey(device_id_to_observer_map_, device_id)); |
| device_id_to_observer_map_[device_id] = std::move(observer); |
| |
| const VideoCaptureControllerID controller_id(device_id); |
| if (controllers_.find(controller_id) != controllers_.end()) { |
| device_id_to_observer_map_[device_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::STARTED); |
| NotifyStreamAdded(); |
| return; |
| } |
| |
| controllers_[controller_id] = base::WeakPtr<VideoCaptureController>(); |
| media_stream_manager_->video_capture_manager()->ConnectClient( |
| session_id, params, controller_id, this, |
| base::Bind(&VideoCaptureHost::OnControllerAdded, |
| weak_factory_.GetWeakPtr(), device_id)); |
| } |
| |
| void VideoCaptureHost::Stop(int32_t device_id) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| |
| if (base::ContainsKey(device_id_to_observer_map_, device_id)) { |
| device_id_to_observer_map_[device_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::STOPPED); |
| } |
| device_id_to_observer_map_.erase(controller_id); |
| |
| DeleteVideoCaptureController(controller_id, media::VideoCaptureError::kNone); |
| NotifyStreamRemoved(); |
| } |
| |
| void VideoCaptureHost::Pause(int32_t device_id) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end() || !it->second) |
| return; |
| |
| media_stream_manager_->video_capture_manager()->PauseCaptureForClient( |
| it->second.get(), controller_id, this); |
| if (base::ContainsKey(device_id_to_observer_map_, device_id)) { |
| device_id_to_observer_map_[device_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::PAUSED); |
| } |
| } |
| |
| void VideoCaptureHost::Resume(int32_t device_id, |
| int32_t session_id, |
| const media::VideoCaptureParams& params) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end() || !it->second) |
| return; |
| |
| media_stream_manager_->video_capture_manager()->ResumeCaptureForClient( |
| session_id, params, it->second.get(), controller_id, this); |
| if (base::ContainsKey(device_id_to_observer_map_, device_id)) { |
| device_id_to_observer_map_[device_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::RESUMED); |
| } |
| } |
| |
| void VideoCaptureHost::RequestRefreshFrame(int32_t device_id) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) |
| return; |
| |
| if (VideoCaptureController* controller = it->second.get()) { |
| media_stream_manager_->video_capture_manager() |
| ->RequestRefreshFrameForClient(controller); |
| } |
| } |
| |
| void VideoCaptureHost::ReleaseBuffer(int32_t device_id, |
| int32_t buffer_id, |
| double consumer_resource_utilization) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) |
| return; |
| |
| const base::WeakPtr<VideoCaptureController>& controller = it->second; |
| if (controller) { |
| controller->ReturnBuffer(controller_id, this, buffer_id, |
| consumer_resource_utilization); |
| } |
| } |
| |
| void VideoCaptureHost::GetDeviceSupportedFormats( |
| int32_t device_id, |
| int32_t session_id, |
| GetDeviceSupportedFormatsCallback callback) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| media::VideoCaptureFormats supported_formats; |
| if (!media_stream_manager_->video_capture_manager() |
| ->GetDeviceSupportedFormats(session_id, &supported_formats)) { |
| DLOG(WARNING) << "Could not retrieve device supported formats"; |
| } |
| std::move(callback).Run(supported_formats); |
| } |
| |
| void VideoCaptureHost::GetDeviceFormatsInUse( |
| int32_t device_id, |
| int32_t session_id, |
| GetDeviceFormatsInUseCallback callback) { |
| DVLOG(1) << __func__ << " " << device_id; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| media::VideoCaptureFormats formats_in_use; |
| if (!media_stream_manager_->video_capture_manager()->GetDeviceFormatsInUse( |
| session_id, &formats_in_use)) { |
| DLOG(WARNING) << "Could not retrieve device format(s) in use"; |
| } |
| std::move(callback).Run(formats_in_use); |
| } |
| |
| void VideoCaptureHost::OnFrameDropped( |
| int32_t device_id, |
| media::VideoCaptureFrameDropReason reason) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) |
| return; |
| |
| const base::WeakPtr<VideoCaptureController>& controller = it->second; |
| if (controller) |
| controller->OnFrameDropped(reason); |
| } |
| |
| void VideoCaptureHost::OnLog(int32_t device_id, const std::string& message) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) |
| return; |
| |
| const base::WeakPtr<VideoCaptureController>& controller = it->second; |
| if (controller) |
| controller->OnLog(message); |
| } |
| |
| void VideoCaptureHost::DoError(VideoCaptureControllerID controller_id, |
| media::VideoCaptureError error) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) { |
| device_id_to_observer_map_[controller_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::FAILED); |
| } |
| |
| DeleteVideoCaptureController(controller_id, error); |
| NotifyStreamRemoved(); |
| } |
| |
| void VideoCaptureHost::DoEnded(VideoCaptureControllerID controller_id) { |
| DVLOG(1) << __func__; |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (controllers_.find(controller_id) == controllers_.end()) |
| return; |
| |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) { |
| device_id_to_observer_map_[controller_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::ENDED); |
| } |
| |
| DeleteVideoCaptureController(controller_id, media::VideoCaptureError::kNone); |
| NotifyStreamRemoved(); |
| } |
| |
| void VideoCaptureHost::OnControllerAdded( |
| int device_id, |
| const base::WeakPtr<VideoCaptureController>& controller) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| VideoCaptureControllerID controller_id(device_id); |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) { |
| if (controller) { |
| media_stream_manager_->video_capture_manager()->DisconnectClient( |
| controller.get(), controller_id, this, |
| media::VideoCaptureError::kNone); |
| } |
| return; |
| } |
| |
| if (!controller) { |
| if (base::ContainsKey(device_id_to_observer_map_, controller_id)) { |
| device_id_to_observer_map_[device_id]->OnStateChanged( |
| media::mojom::VideoCaptureState::FAILED); |
| } |
| controllers_.erase(controller_id); |
| return; |
| } |
| |
| DCHECK(!it->second); |
| it->second = controller; |
| } |
| |
| void VideoCaptureHost::DeleteVideoCaptureController( |
| VideoCaptureControllerID controller_id, |
| media::VideoCaptureError error) { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| |
| auto it = controllers_.find(controller_id); |
| if (it == controllers_.end()) |
| return; |
| |
| const base::WeakPtr<VideoCaptureController> controller = it->second; |
| controllers_.erase(it); |
| if (!controller) |
| return; |
| |
| media_stream_manager_->video_capture_manager()->DisconnectClient( |
| controller.get(), controller_id, this, error); |
| } |
| |
| void VideoCaptureHost::NotifyStreamAdded() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| ++number_of_active_streams_; |
| // base::Unretained() usage is safe because |render_process_host_delegate_| |
| // is destroyed on UI thread. |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::UI}, |
| base::BindOnce(&RenderProcessHostDelegate::NotifyStreamAdded, |
| base::Unretained(render_process_host_delegate_.get()))); |
| } |
| |
| void VideoCaptureHost::NotifyStreamRemoved() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| // DoError() from camera side failure can be followed by Stop() from JS |
| // side, so we should check before going to negative. |
| // TODO(emircan): Investigate all edge cases and add more browsertests. |
| // https://crbug.com/754765 |
| if (number_of_active_streams_ == 0) |
| return; |
| --number_of_active_streams_; |
| // base::Unretained() usage is safe because |render_process_host_delegate_| is |
| // destroyed on UI thread. |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::UI}, |
| base::BindOnce(&RenderProcessHostDelegate::NotifyStreamRemoved, |
| base::Unretained(render_process_host_delegate_.get()))); |
| } |
| |
| void VideoCaptureHost::NotifyAllStreamsRemoved() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| while (number_of_active_streams_ > 0) |
| NotifyStreamRemoved(); |
| } |
| |
| } // namespace content |