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1 /* | 1 /* |
2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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39 // Used to indicate channel's connection state. | 39 // Used to indicate channel's connection state. |
40 enum TransportChannelState { STATE_CONNECTING, STATE_COMPLETED, STATE_FAILED }; | 40 enum TransportChannelState { STATE_CONNECTING, STATE_COMPLETED, STATE_FAILED }; |
41 | 41 |
42 // A TransportChannel represents one logical stream of packets that are sent | 42 // A TransportChannel represents one logical stream of packets that are sent |
43 // between the two sides of a session. | 43 // between the two sides of a session. |
44 class TransportChannel : public sigslot::has_slots<> { | 44 class TransportChannel : public sigslot::has_slots<> { |
45 public: | 45 public: |
46 explicit TransportChannel(const std::string& content_name, int component) | 46 explicit TransportChannel(const std::string& content_name, int component) |
47 : content_name_(content_name), | 47 : content_name_(content_name), |
48 component_(component), | 48 component_(component), |
49 readable_(false), writable_(false), receiving_(false) {} | 49 writable_(false), |
| 50 receiving_(false) {} |
50 virtual ~TransportChannel() {} | 51 virtual ~TransportChannel() {} |
51 | 52 |
52 // TODO(guoweis) - Make this pure virtual once all subclasses of | 53 // TODO(guoweis) - Make this pure virtual once all subclasses of |
53 // TransportChannel have this defined. | 54 // TransportChannel have this defined. |
54 virtual TransportChannelState GetState() const { | 55 virtual TransportChannelState GetState() const { |
55 return TransportChannelState::STATE_CONNECTING; | 56 return TransportChannelState::STATE_CONNECTING; |
56 } | 57 } |
57 | 58 |
58 // TODO(mallinath) - Remove this API, as it's no longer useful. | 59 // TODO(mallinath) - Remove this API, as it's no longer useful. |
59 // Returns the session id of this channel. | 60 // Returns the session id of this channel. |
60 virtual const std::string SessionId() const { return std::string(); } | 61 virtual const std::string SessionId() const { return std::string(); } |
61 | 62 |
62 const std::string& content_name() const { return content_name_; } | 63 const std::string& content_name() const { return content_name_; } |
63 int component() const { return component_; } | 64 int component() const { return component_; } |
64 | 65 |
65 // Returns the readable and states of this channel. Each time one of these | 66 // Returns the states of this channel. Each time one of these states changes, |
66 // states changes, a signal is raised. These states are aggregated by the | 67 // a signal is raised. These states are aggregated by the TransportManager. |
67 // TransportManager. | |
68 bool readable() const { return readable_; } | |
69 bool writable() const { return writable_; } | 68 bool writable() const { return writable_; } |
70 bool receiving() const { return receiving_; } | 69 bool receiving() const { return receiving_; } |
71 sigslot::signal1<TransportChannel*> SignalReadableState; | |
72 sigslot::signal1<TransportChannel*> SignalWritableState; | 70 sigslot::signal1<TransportChannel*> SignalWritableState; |
73 // Emitted when the TransportChannel's ability to send has changed. | 71 // Emitted when the TransportChannel's ability to send has changed. |
74 sigslot::signal1<TransportChannel*> SignalReadyToSend; | 72 sigslot::signal1<TransportChannel*> SignalReadyToSend; |
75 sigslot::signal1<TransportChannel*> SignalReceivingState; | 73 sigslot::signal1<TransportChannel*> SignalReceivingState; |
76 | 74 |
77 // Attempts to send the given packet. The return value is < 0 on failure. | 75 // Attempts to send the given packet. The return value is < 0 on failure. |
78 // TODO: Remove the default argument once channel code is updated. | 76 // TODO: Remove the default argument once channel code is updated. |
79 virtual int SendPacket(const char* data, size_t len, | 77 virtual int SendPacket(const char* data, size_t len, |
80 const rtc::PacketOptions& options, | 78 const rtc::PacketOptions& options, |
81 int flags = 0) = 0; | 79 int flags = 0) = 0; |
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131 // indicates where and how we are currently sending media. | 129 // indicates where and how we are currently sending media. |
132 sigslot::signal2<TransportChannel*, const Candidate&> SignalRouteChange; | 130 sigslot::signal2<TransportChannel*, const Candidate&> SignalRouteChange; |
133 | 131 |
134 // Invoked when the channel is being destroyed. | 132 // Invoked when the channel is being destroyed. |
135 sigslot::signal1<TransportChannel*> SignalDestroyed; | 133 sigslot::signal1<TransportChannel*> SignalDestroyed; |
136 | 134 |
137 // Debugging description of this transport channel. | 135 // Debugging description of this transport channel. |
138 std::string ToString() const; | 136 std::string ToString() const; |
139 | 137 |
140 protected: | 138 protected: |
141 // Sets the readable state, signaling if necessary. | |
142 void set_readable(bool readable); | |
143 | 139 |
144 // Sets the writable state, signaling if necessary. | 140 // Sets the writable state, signaling if necessary. |
145 void set_writable(bool writable); | 141 void set_writable(bool writable); |
146 | 142 |
147 // Sets the receiving state, signaling if necessary. | 143 // Sets the receiving state, signaling if necessary. |
148 void set_receiving(bool receiving); | 144 void set_receiving(bool receiving); |
149 | 145 |
150 | 146 |
151 private: | 147 private: |
152 // Used mostly for debugging. | 148 // Used mostly for debugging. |
153 std::string content_name_; | 149 std::string content_name_; |
154 int component_; | 150 int component_; |
155 bool readable_; | |
156 bool writable_; | 151 bool writable_; |
157 bool receiving_; | 152 bool receiving_; |
158 | 153 |
159 DISALLOW_COPY_AND_ASSIGN(TransportChannel); | 154 DISALLOW_COPY_AND_ASSIGN(TransportChannel); |
160 }; | 155 }; |
161 | 156 |
162 } // namespace cricket | 157 } // namespace cricket |
163 | 158 |
164 #endif // WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_ | 159 #endif // WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_ |
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