/*
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* Copyright (c) 2015 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 WEBRTC_STREAM_H_
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#define WEBRTC_STREAM_H_
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#include "webrtc/common_types.h"
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namespace webrtc {
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enum NetworkState {
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kNetworkUp,
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kNetworkDown,
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};
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// Common base class for streams.
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class Stream {
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public:
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// Starts stream activity.
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// When a stream is active, it can receive, process and deliver packets.
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virtual void Start() = 0;
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// Stops stream activity.
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// When a stream is stopped, it can't receive, process or deliver packets.
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virtual void Stop() = 0;
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// Called to notify that network state has changed, so that the stream can
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// respond, e.g. by pausing or resuming activity.
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virtual void SignalNetworkState(NetworkState state) = 0;
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// Called when a RTCP packet is received.
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virtual bool DeliverRtcp(const uint8_t* packet, size_t length) = 0;
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protected:
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virtual ~Stream() {}
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};
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// Common base class for receive streams.
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class ReceiveStream : public Stream {
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public:
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// Called when a RTP packet is received.
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virtual bool DeliverRtp(const uint8_t* packet,
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size_t length,
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const PacketTime& packet_time) = 0;
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};
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// Common base class for send streams.
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// A tag class that denotes send stream type.
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class SendStream : public Stream {};
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} // namespace webrtc
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#endif // WEBRTC_STREAM_H_
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