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// 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.
#ifndef MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_SYSTEM_IMPL_H_
#define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_SYSTEM_IMPL_H_
#include "media/capture/video/video_capture_system.h"
#if defined(OS_CHROMEOS)
#include "media/capture/video/chromeos/mojo/cros_image_capture.mojom.h"
#endif // defined(OS_CHROMEOS)
namespace media {
// Layer on top of VideoCaptureDeviceFactory that translates device descriptors
// to string identifiers and consolidates and caches device descriptors and
// supported formats into VideoCaptureDeviceInfos.
class CAPTURE_EXPORT VideoCaptureSystemImpl : public VideoCaptureSystem {
public:
explicit VideoCaptureSystemImpl(
std::unique_ptr<VideoCaptureDeviceFactory> factory);
~VideoCaptureSystemImpl() override;
void GetDeviceInfosAsync(DeviceInfoCallback result_callback) override;
std::unique_ptr<VideoCaptureDevice> CreateDevice(
const std::string& device_id) override;
#if defined(OS_CHROMEOS)
void BindCrosImageCaptureRequest(
cros::mojom::CrosImageCaptureRequest request) override;
#endif // defined(OS_CHROMEOS)
private:
using DeviceEnumQueue = std::list<DeviceInfoCallback>;
// Returns nullptr if no descriptor found.
const VideoCaptureDeviceInfo* LookupDeviceInfoFromId(
const std::string& device_id);
void ProcessDeviceInfoRequest();
void DeviceInfosReady(
std::unique_ptr<VideoCaptureDeviceDescriptors> descriptors);
const std::unique_ptr<VideoCaptureDeviceFactory> factory_;
std::vector<VideoCaptureDeviceInfo> devices_info_cache_;
DeviceEnumQueue device_enum_request_queue_;
base::ThreadChecker thread_checker_;
};
} // namespace media
#endif // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_SYSTEM_IMPL_H_
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