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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 | |
11 #ifndef WEBRTC_MODULES_PACING_INCLUDE_PACKET_ROUTER_H_ | |
12 #define WEBRTC_MODULES_PACING_INCLUDE_PACKET_ROUTER_H_ | |
13 | |
14 #include <list> | |
15 | |
16 #include "webrtc/base/constructormagic.h" | |
17 #include "webrtc/base/criticalsection.h" | |
18 #include "webrtc/base/scoped_ptr.h" | |
19 #include "webrtc/base/thread_annotations.h" | |
20 #include "webrtc/common_types.h" | |
21 #include "webrtc/modules/pacing/include/paced_sender.h" | |
22 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | |
23 | |
24 namespace webrtc { | |
25 | |
26 class RtpRtcp; | |
27 namespace rtcp { | |
28 class TransportFeedback; | |
29 } // namespace rtcp | |
30 | |
31 // PacketRouter routes outgoing data to the correct sending RTP module, based | |
32 // on the simulcast layer in RTPVideoHeader. | |
33 class PacketRouter : public PacedSender::Callback, | |
34 public TransportSequenceNumberAllocator { | |
35 public: | |
36 PacketRouter(); | |
37 virtual ~PacketRouter(); | |
38 | |
39 void AddRtpModule(RtpRtcp* rtp_module); | |
40 void RemoveRtpModule(RtpRtcp* rtp_module); | |
41 | |
42 // Implements PacedSender::Callback. | |
43 bool TimeToSendPacket(uint32_t ssrc, | |
44 uint16_t sequence_number, | |
45 int64_t capture_timestamp, | |
46 bool retransmission) override; | |
47 | |
48 size_t TimeToSendPadding(size_t bytes) override; | |
49 | |
50 void SetTransportWideSequenceNumber(uint16_t sequence_number); | |
51 uint16_t AllocateSequenceNumber() override; | |
52 | |
53 // Send transport feedback packet to send-side. | |
54 virtual bool SendFeedback(rtcp::TransportFeedback* packet); | |
55 | |
56 private: | |
57 rtc::CriticalSection modules_lock_; | |
58 // Map from ssrc to sending rtp module. | |
59 std::list<RtpRtcp*> rtp_modules_ GUARDED_BY(modules_lock_); | |
60 | |
61 volatile int transport_seq_; | |
62 | |
63 RTC_DISALLOW_COPY_AND_ASSIGN(PacketRouter); | |
64 }; | |
65 } // namespace webrtc | |
66 #endif // WEBRTC_MODULES_PACING_INCLUDE_PACKET_ROUTER_H_ | |
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