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// Copyright 2019 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_VIDEO_SOURCE_IMPL_H_
#define SERVICES_VIDEO_CAPTURE_VIDEO_SOURCE_IMPL_H_
#include <map>
#include "base/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/video_capture/broadcasting_receiver.h"
#include "services/video_capture/device_factory_media_to_mojo_adapter.h"
#include "services/video_capture/public/mojom/device.mojom.h"
#include "services/video_capture/public/mojom/video_frame_handler.mojom.h"
#include "services/video_capture/public/mojom/video_source.mojom.h"
#include "services/video_capture/public/mojom/video_source_provider.mojom.h"
namespace video_capture {
class PushVideoStreamSubscriptionImpl;
class VideoSourceImpl : public mojom::VideoSource {
public:
VideoSourceImpl(mojom::DeviceFactory* device_factory,
const std::string& device_id,
base::RepeatingClosure on_last_binding_closed_cb);
~VideoSourceImpl() override;
void AddToReceiverSet(mojo::PendingReceiver<VideoSource> receiver);
// mojom::VideoSource implementation.
void CreatePushSubscription(
mojo::PendingRemote<mojom::VideoFrameHandler> subscriber,
const media::VideoCaptureParams& requested_settings,
bool force_reopen_with_new_settings,
mojo::PendingReceiver<mojom::PushVideoStreamSubscription> subscription,
CreatePushSubscriptionCallback callback) override;
private:
enum class DeviceStatus {
kNotStarted,
kStartingAsynchronously,
kStarted,
kStoppingAsynchronously
};
void OnClientDisconnected();
void StartDeviceWithSettings(
const media::VideoCaptureParams& requested_settings);
void OnCreateDeviceResponse(mojom::DeviceAccessResultCode result_code);
void OnPushSubscriptionClosedOrDisconnectedOrDiscarded(
PushVideoStreamSubscriptionImpl* subscription,
base::OnceClosure done_cb);
void StopDeviceAsynchronously();
void OnStopDeviceComplete();
mojom::DeviceFactory* const device_factory_;
const std::string device_id_;
mojo::ReceiverSet<mojom::VideoSource> receivers_;
base::RepeatingClosure on_last_binding_closed_cb_;
// We use the address of each instance as keys to itself.
std::map<PushVideoStreamSubscriptionImpl*,
std::unique_ptr<PushVideoStreamSubscriptionImpl>>
push_subscriptions_;
BroadcastingReceiver broadcaster_;
mojo::Receiver<mojom::VideoFrameHandler> broadcaster_video_frame_handler_{
&broadcaster_};
DeviceStatus device_status_;
mojo::Remote<mojom::Device> device_;
media::VideoCaptureParams device_start_settings_;
bool restart_device_once_when_stop_complete_;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<VideoSourceImpl> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(VideoSourceImpl);
};
} // namespace video_capture
#endif // SERVICES_VIDEO_CAPTURE_VIDEO_SOURCE_PROVIDER_IMPL_H_