78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef CALL_RTP_STREAM_RECEIVER_CONTROLLER_H_
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#define CALL_RTP_STREAM_RECEIVER_CONTROLLER_H_
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#include <memory>
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#include "api/sequence_checker.h"
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#include "call/rtp_demuxer.h"
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#include "call/rtp_stream_receiver_controller_interface.h"
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namespace webrtc {
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class RtpPacketReceived;
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// This class represents the RTP receive parsing and demuxing, for a
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// single RTP session.
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// TODO(nisse): Add RTCP processing, we should aim to terminate RTCP
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// and not leave any RTCP processing to individual receive streams.
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// TODO(nisse): Extract per-packet processing, including parsing and
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// demuxing, into a separate class.
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class RtpStreamReceiverController
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: public RtpStreamReceiverControllerInterface {
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public:
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RtpStreamReceiverController();
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~RtpStreamReceiverController() override;
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// Implements RtpStreamReceiverControllerInterface.
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std::unique_ptr<RtpStreamReceiverInterface> CreateReceiver(
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uint32_t ssrc,
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RtpPacketSinkInterface* sink) override;
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// Thread-safe wrappers for the corresponding RtpDemuxer methods.
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bool AddSink(uint32_t ssrc, RtpPacketSinkInterface* sink) override;
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size_t RemoveSink(const RtpPacketSinkInterface* sink) override;
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// TODO(nisse): Not yet responsible for parsing.
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bool OnRtpPacket(const RtpPacketReceived& packet);
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private:
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class Receiver : public RtpStreamReceiverInterface {
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public:
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Receiver(RtpStreamReceiverController* controller,
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uint32_t ssrc,
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RtpPacketSinkInterface* sink);
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~Receiver() override;
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private:
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RtpStreamReceiverController* const controller_;
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RtpPacketSinkInterface* const sink_;
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};
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// TODO(bugs.webrtc.org/11993): We expect construction and all methods to be
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// called on the same thread/tq. Currently this is the worker thread
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// (including OnRtpPacket) but a more natural fit would be the network thread.
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// Using a sequence checker to ensure that usage is correct but at the same
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// time not require a specific thread/tq, an instance of this class + the
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// associated functionality should be easily moved from one execution context
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// to another (i.e. when network packets don't hop to the worker thread inside
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// of Call).
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SequenceChecker demuxer_sequence_;
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// At this level the demuxer is only configured to demux by SSRC, so don't
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// worry about MIDs (MIDs are handled by upper layers).
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RtpDemuxer demuxer_ RTC_GUARDED_BY(&demuxer_sequence_){false /*use_mid*/};
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};
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} // namespace webrtc
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#endif // CALL_RTP_STREAM_RECEIVER_CONTROLLER_H_
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