openscreen_session_host.h | Explore in Territory

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_MIRRORING_SERVICE_OPENSCREEN_SESSION_HOST_H_
#define COMPONENTS_MIRRORING_SERVICE_OPENSCREEN_SESSION_HOST_H_

#include "base/component_export.h"
#include "base/gtest_prod_util.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "components/mirroring/mojom/cast_message_channel.mojom.h"
#include "components/mirroring/mojom/resource_provider.mojom.h"
#include "components/mirroring/mojom/session_observer.mojom.h"
#include "components/mirroring/mojom/session_parameters.mojom.h"
#include "components/mirroring/service/media_remoter.h"
#include "components/mirroring/service/mirror_settings.h"
#include "components/mirroring/service/mirroring_logger.h"
#include "components/mirroring/service/openscreen_message_port.h"
#include "components/mirroring/service/openscreen_stats_client.h"
#include "components/mirroring/service/rpc_dispatcher.h"
#include "components/mirroring/service/rtp_stream.h"
#include "components/openscreen_platform/event_trace_logging_platform.h"
#include "components/openscreen_platform/task_runner.h"
#include "gpu/config/gpu_info.h"
#include "media/capture/video/video_capture_feedback.h"
#include "media/cast/cast_environment.h"
#include "media/mojo/mojom/video_encode_accelerator.mojom.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/network/public/mojom/network_context.mojom.h"
#include "third_party/openscreen/src/cast/streaming/sender_session.h"

Recommendations;

namespace base {
class OneShotTimer;
}

namespace media {
class AudioInputDevice;

}  // namespace media

namespace viz {
class Gpu;
}  // namespace viz

namespace mirroring {

class RpcDispatcher;
class VideoCaptureClient;

// Minimum required bitrate used for calculating bandwidth.
constexpr int kMinRequiredBitrate = …;  // 384 kbps

// Default bitrate used before we have a calculation.
constexpr int kDefaultBitrate = …;  // 768 kbps

// Hosts a streaming session by hosting an `openscreen::cast::SenderSession` and
// doing all of the necessary interfacing for audio and video capture, switching
// between mirroring and remoting, and setting up audio and video streams to
// encode and send captured content.
//
// On construction, an Open Screen SenderSession is immediately created and
// negotiation of a streaming session is started. The session host will stay
// in a good state until either the mirroring service notices a disconnection
// and tears down this streaming session, or a fatal error occurs.
//
// NOTE: most methods should be called on the same sequence as construction.
// This class also uses additional task runners, such as the IO task runner of
// this utility process for accessing the GPU, and dedicated video and audio
// encoder threads. Finally, some methods such as
// AudioCapturingCallback::Capture may be called on the audio thread.
class COMPONENT_EXPORT(MIRRORING_SERVICE) OpenscreenSessionHost final
    : public RtpStreamClient,
      public openscreen::cast::SenderSession::Client,
      public MediaRemoter::Client { … };

}  // namespace mirroring

#endif  // COMPONENTS_MIRRORING_SERVICE_OPENSCREEN_SESSION_HOST_H_
chromium/components/mirroring/service/openscreen_session_host.h
