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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This is the main interface for the cast transport sender. It accepts encoded | 5 // This is the main interface for the cast transport sender. It accepts encoded |
6 // frames (both audio and video), encrypts their encoded data, packetizes them | 6 // frames (both audio and video), encrypts their encoded data, packetizes them |
7 // and feeds them into a transport (e.g., UDP). | 7 // and feeds them into a transport (e.g., UDP). |
8 | 8 |
9 // Construction of the Cast Sender and the Cast Transport should be done | 9 // Construction of the Cast Sender and the Cast Transport should be done |
10 // in the following order: | 10 // in the following order: |
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43 } // namespace net | 43 } // namespace net |
44 | 44 |
45 namespace media { | 45 namespace media { |
46 namespace cast { | 46 namespace cast { |
47 | 47 |
48 struct RtpReceiverStatistics; | 48 struct RtpReceiverStatistics; |
49 struct RtcpTimeData; | 49 struct RtcpTimeData; |
50 | 50 |
51 // Following the initialization of either audio or video an initialization | 51 // Following the initialization of either audio or video an initialization |
52 // status will be sent via this callback. | 52 // status will be sent via this callback. |
53 typedef base::Callback<void(CastTransportStatus status)> | 53 using CastTransportStatusCallback = |
54 CastTransportStatusCallback; | 54 base::Callback<void(CastTransportStatus status)>; |
55 | 55 |
56 typedef base::Callback<void(std::unique_ptr<std::vector<FrameEvent>>, | 56 using BulkRawEventsCallback = |
57 std::unique_ptr<std::vector<PacketEvent>>)> | 57 base::Callback<void(std::unique_ptr<std::vector<FrameEvent>>, |
58 BulkRawEventsCallback; | 58 std::unique_ptr<std::vector<PacketEvent>>)>; |
| 59 |
| 60 // Interface to handle received RTCP messages on RTP sender. |
| 61 class RtcpObserver { |
| 62 public: |
| 63 virtual ~RtcpObserver() {} |
| 64 |
| 65 // Called on receiving cast message from RTP receiver. |
| 66 virtual void OnReceivedCastMessage(const RtcpCastMessage& cast_message) = 0; |
| 67 |
| 68 // Called on receiving Rtt message from RTP receiver. |
| 69 virtual void OnReceivedRtt(base::TimeDelta round_trip_time) = 0; |
| 70 |
| 71 // Called on receiving PLI from RTP receiver. |
| 72 virtual void OnReceivedPli() = 0; |
| 73 |
| 74 // Called on receiving RTP receiver logs. |
| 75 virtual void OnReceivedReceiverLog(const RtcpReceiverLogMessage& log) {} |
| 76 }; |
59 | 77 |
60 // The application should only trigger this class from the transport thread. | 78 // The application should only trigger this class from the transport thread. |
61 class CastTransport : public base::NonThreadSafe { | 79 class CastTransport : public base::NonThreadSafe { |
62 public: | 80 public: |
63 // Interface used for receiving status updates, raw events, and RTP packets | 81 // Interface used for receiving status updates, raw events, and RTP packets |
64 // from CastTransport. | 82 // from CastTransport. |
65 class Client { | 83 class Client { |
66 public: | 84 public: |
67 virtual ~Client(){}; | 85 virtual ~Client(){}; |
68 | 86 |
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86 std::unique_ptr<Client> client, | 104 std::unique_ptr<Client> client, |
87 std::unique_ptr<PacketTransport> transport, | 105 std::unique_ptr<PacketTransport> transport, |
88 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner); | 106 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner); |
89 | 107 |
90 virtual ~CastTransport() {} | 108 virtual ~CastTransport() {} |
91 | 109 |
92 // Audio/Video initialization. | 110 // Audio/Video initialization. |
93 // Encoded frames cannot be transmitted until the relevant initialize method | 111 // Encoded frames cannot be transmitted until the relevant initialize method |
94 // is called. | 112 // is called. |
95 virtual void InitializeAudio(const CastTransportRtpConfig& config, | 113 virtual void InitializeAudio(const CastTransportRtpConfig& config, |
96 const RtcpCastMessageCallback& cast_message_cb, | 114 std::unique_ptr<RtcpObserver> rtcp_observer) {} |
97 const RtcpRttCallback& rtt_cb, | |
98 const RtcpPliCallback& pli_cb) = 0; | |
99 virtual void InitializeVideo(const CastTransportRtpConfig& config, | 115 virtual void InitializeVideo(const CastTransportRtpConfig& config, |
100 const RtcpCastMessageCallback& cast_message_cb, | 116 std::unique_ptr<RtcpObserver> rtcp_observer) {} |
101 const RtcpRttCallback& rtt_cb, | |
102 const RtcpPliCallback& pli_cb) = 0; | |
103 | 117 |
104 // Encrypt, packetize and transmit |frame|. |ssrc| must refer to a | 118 // Encrypt, packetize and transmit |frame|. |ssrc| must refer to a |
105 // a channel already established with InitializeAudio / InitializeVideo. | 119 // a channel already established with InitializeAudio / InitializeVideo. |
106 virtual void InsertFrame(uint32_t ssrc, const EncodedFrame& frame) = 0; | 120 virtual void InsertFrame(uint32_t ssrc, const EncodedFrame& frame) = 0; |
107 | 121 |
108 // Sends a RTCP sender report to the receiver. | 122 // Sends a RTCP sender report to the receiver. |
109 // |ssrc| is the SSRC for this report. | 123 // |ssrc| is the SSRC for this report. |
110 // |current_time| is the current time reported by a tick clock. | 124 // |current_time| is the current time reported by a tick clock. |
111 // |current_time_as_rtp_timestamp| is the corresponding RTP timestamp. | 125 // |current_time_as_rtp_timestamp| is the corresponding RTP timestamp. |
112 virtual void SendSenderReport(uint32_t ssrc, | 126 virtual void SendSenderReport(uint32_t ssrc, |
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156 virtual void SendRtcpFromRtpReceiver() = 0; | 170 virtual void SendRtcpFromRtpReceiver() = 0; |
157 | 171 |
158 // Set options for the PacedSender and Wifi. | 172 // Set options for the PacedSender and Wifi. |
159 virtual void SetOptions(const base::DictionaryValue& options) = 0; | 173 virtual void SetOptions(const base::DictionaryValue& options) = 0; |
160 }; | 174 }; |
161 | 175 |
162 } // namespace cast | 176 } // namespace cast |
163 } // namespace media | 177 } // namespace media |
164 | 178 |
165 #endif // MEDIA_CAST_NET_CAST_TRANSPORT_H_ | 179 #endif // MEDIA_CAST_NET_CAST_TRANSPORT_H_ |
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