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| 1 /* |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 #ifndef WEBRTC_STREAM_H_ |
| 11 #define WEBRTC_STREAM_H_ |
| 12 |
| 13 #include "webrtc/common_types.h" |
| 14 |
| 15 namespace webrtc { |
| 16 |
| 17 enum NetworkState { |
| 18 kNetworkUp, |
| 19 kNetworkDown, |
| 20 }; |
| 21 |
| 22 // Common base class for streams. |
| 23 class Stream { |
| 24 public: |
| 25 // Starts stream activity. |
| 26 // When a stream is active, it can receive, process and deliver packets. |
| 27 virtual void Start() = 0; |
| 28 // Stops stream activity. |
| 29 // When a stream is stopped, it can't receive, process or deliver packets. |
| 30 virtual void Stop() = 0; |
| 31 // Called to notify that network state has changed, so that the stream can |
| 32 // respond, e.g. by pausing or resuming activity. |
| 33 virtual void SignalNetworkState(NetworkState state) = 0; |
| 34 // Called when a RTCP packet is received. |
| 35 virtual bool DeliverRtcp(const uint8_t* packet, size_t length) = 0; |
| 36 |
| 37 protected: |
| 38 virtual ~Stream() {} |
| 39 }; |
| 40 |
| 41 // Common base class for receive streams. |
| 42 class ReceiveStream : public Stream { |
| 43 public: |
| 44 // Called when a RTP packet is received. |
| 45 virtual bool DeliverRtp(const uint8_t* packet, size_t length) = 0; |
| 46 }; |
| 47 |
| 48 // Common base class for send streams. |
| 49 // A tag class that denotes send stream type. |
| 50 class SendStream : public Stream {}; |
| 51 |
| 52 } // namespace webrtc |
| 53 |
| 54 #endif // WEBRTC_STREAM_H_ |
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