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content / browser / media / media_interface_factory_holder.h [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_MEDIA_MEDIA_INTERFACE_FACTORY_HOLDER_H_
#define CONTENT_BROWSER_MEDIA_MEDIA_INTERFACE_FACTORY_HOLDER_H_
#include "base/functional/callback.h"
#include "base/threading/thread_checker.h"
#include "media/mojo/mojom/frame_interface_factory.mojom.h"
#include "media/mojo/mojom/interface_factory.mojom.h"
#include "media/mojo/mojom/media_service.mojom.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace content {
// Helper class to get mojo::PendingRemote<media::mojom::InterfaceFactory>.
// Get() lazily connects to the global Media Service instance.
class MediaInterfaceFactoryHolder {
public:
using MediaServiceGetter =
base::RepeatingCallback<media::mojom::MediaService&()>;
using FrameServicesGetter = base::RepeatingCallback<
mojo::PendingRemote<media::mojom::FrameInterfaceFactory>()>;
// |media_service_getter| will be called from the UI thread.
MediaInterfaceFactoryHolder(MediaServiceGetter media_service_getter,
FrameServicesGetter frame_services_getter);
MediaInterfaceFactoryHolder(const MediaInterfaceFactoryHolder&) = delete;
MediaInterfaceFactoryHolder& operator=(const MediaInterfaceFactoryHolder&) =
delete;
~MediaInterfaceFactoryHolder();
// Gets the MediaService |interface_factory_remote_|. The returned pointer is
// still owned by this class.
media::mojom::InterfaceFactory* Get();
private:
void ConnectToMediaService();
MediaServiceGetter media_service_getter_;
FrameServicesGetter frame_services_getter_;
mojo::Remote<media::mojom::InterfaceFactory> interface_factory_remote_;
THREAD_CHECKER(thread_checker_);
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_MEDIA_INTERFACE_FACTORY_HOLDER_H_