You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.9 KiB
62 lines
1.9 KiB
// Copyright 2019 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 CAST_STREAMING_RECEIVER_PACKET_ROUTER_H_
|
|
#define CAST_STREAMING_RECEIVER_PACKET_ROUTER_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
#include "absl/types/span.h"
|
|
#include "cast/streaming/environment.h"
|
|
#include "cast/streaming/ssrc.h"
|
|
#include "util/flat_map.h"
|
|
|
|
namespace openscreen {
|
|
namespace cast {
|
|
|
|
class Receiver;
|
|
|
|
// Handles all network I/O among multiple Receivers meant for synchronized
|
|
// play-out (e.g., one Receiver for audio, one Receiver for video). Incoming
|
|
// traffic is dispatched to the appropriate Receiver, based on its corresponding
|
|
// sender's SSRC. Also, all traffic not coming from the same source is
|
|
// filtered-out.
|
|
class ReceiverPacketRouter final : public Environment::PacketConsumer {
|
|
public:
|
|
explicit ReceiverPacketRouter(Environment* environment);
|
|
~ReceiverPacketRouter() final;
|
|
|
|
protected:
|
|
friend class Receiver;
|
|
|
|
// Called from a Receiver constructor/destructor to register/deregister a
|
|
// Receiver instance that processes RTP/RTCP packets from a Sender having the
|
|
// given SSRC.
|
|
void OnReceiverCreated(Ssrc sender_ssrc, Receiver* receiver);
|
|
void OnReceiverDestroyed(Ssrc sender_ssrc);
|
|
|
|
// Called by a Receiver to send a RTCP packet back to the source from which
|
|
// earlier packets were received, or does nothing if OnReceivedPacket() has
|
|
// not been called yet.
|
|
void SendRtcpPacket(absl::Span<const uint8_t> packet);
|
|
|
|
private:
|
|
// Environment::PacketConsumer implementation.
|
|
void OnReceivedPacket(const IPEndpoint& source,
|
|
Clock::time_point arrival_time,
|
|
std::vector<uint8_t> packet) final;
|
|
|
|
Environment* const environment_;
|
|
|
|
FlatMap<Ssrc, Receiver*> receivers_;
|
|
};
|
|
|
|
} // namespace cast
|
|
} // namespace openscreen
|
|
|
|
#endif // CAST_STREAMING_RECEIVER_PACKET_ROUTER_H_
|