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// 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.
#ifndef SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_FACTORY_IMPL_H_
#define SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_FACTORY_IMPL_H_
#include <vector>
#include "mojo/public/cpp/bindings/binding.h"
#include "services/video_capture/public/interfaces/video_capture_device_factory.mojom.h"
#include "services/video_capture/video_capture_device_proxy_impl.h"
namespace video_capture {
class VideoCaptureDeviceFactoryImpl : public mojom::VideoCaptureDeviceFactory {
public:
VideoCaptureDeviceFactoryImpl();
~VideoCaptureDeviceFactoryImpl() override;
void AddDevice(mojom::VideoCaptureDeviceDescriptorPtr descriptor,
std::unique_ptr<VideoCaptureDeviceProxyImpl> device);
// mojom::VideoCaptureDeviceFactory:
void EnumerateDeviceDescriptors(
const EnumerateDeviceDescriptorsCallback& callback) override;
void GetSupportedFormats(
mojom::VideoCaptureDeviceDescriptorPtr device_descriptor,
const GetSupportedFormatsCallback& callback) override;
void CreateDeviceProxy(
mojom::VideoCaptureDeviceDescriptorPtr device_descriptor,
mojom::VideoCaptureDeviceProxyRequest proxy_request,
const CreateDeviceProxyCallback& callback) override;
private:
// We use a std::vector of structs with the |descriptor| field as a unique
// keys. We do it this way instead of using a std::map because Mojo-generated
// structs (here VideoCaptureDeviceDescriptor) do not (yet) generate a
// comparison operator, and we do not want to provide a custom one. The
// performance penalty of linear-time lookup should be minimal assuming that
// the number of capture devices is typically small.
class DeviceEntry {
public:
DeviceEntry(mojom::VideoCaptureDeviceDescriptorPtr descriptor,
std::unique_ptr<VideoCaptureDeviceProxyImpl> bindable_target);
~DeviceEntry();
DeviceEntry(DeviceEntry&& other);
DeviceEntry& operator=(DeviceEntry&& other);
mojom::VideoCaptureDeviceDescriptorPtr MakeDescriptorCopy() const;
bool DescriptorEquals(
const mojom::VideoCaptureDeviceDescriptorPtr& other) const;
bool is_bound() const;
void Bind(mojom::VideoCaptureDeviceProxyRequest request);
void Unbind();
void OnConnectionErrorOrClose();
private:
mojom::VideoCaptureDeviceDescriptorPtr descriptor_;
std::unique_ptr<VideoCaptureDeviceProxyImpl> device_proxy_;
// TODO(chfremer) Use mojo::Binding<> directly instead of unique_ptr<> when
// mojo::Binding<> supports move operators.
// https://crbug.com/644314
std::unique_ptr<mojo::Binding<mojom::VideoCaptureDeviceProxy>> binding_;
DISALLOW_COPY_AND_ASSIGN(DeviceEntry);
};
std::vector<DeviceEntry> devices_;
};
} // namespace video_capture
#endif // SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_FACTORY_IMPL_H_