WifiDisplaySource.h revision 16c090555adf9f37bad0f061fd2651b91a34ae41
1/* 2 * Copyright 2012, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef WIFI_DISPLAY_SOURCE_H_ 18 19#define WIFI_DISPLAY_SOURCE_H_ 20 21#include "ANetworkSession.h" 22 23#include <media/stagefright/foundation/AHandler.h> 24 25#include <netinet/in.h> 26 27namespace android { 28 29#define REQUIRE_HDCP 1 30 31struct IHDCP; 32struct IRemoteDisplayClient; 33struct ParsedMessage; 34 35// Represents the RTSP server acting as a wifi display source. 36// Manages incoming connections, sets up Playback sessions as necessary. 37struct WifiDisplaySource : public AHandler { 38 static const unsigned kWifiDisplayDefaultPort = 7236; 39 40 WifiDisplaySource( 41 const sp<ANetworkSession> &netSession, 42 const sp<IRemoteDisplayClient> &client); 43 44 status_t start(const char *iface); 45 status_t stop(); 46 47protected: 48 virtual ~WifiDisplaySource(); 49 virtual void onMessageReceived(const sp<AMessage> &msg); 50 51private: 52 struct PlaybackSession; 53 54#if REQUIRE_HDCP 55 struct HDCPObserver; 56#endif 57 58 enum State { 59 INITIALIZED, 60 AWAITING_CLIENT_CONNECTION, 61 AWAITING_CLIENT_SETUP, 62 AWAITING_CLIENT_PLAY, 63 ABOUT_TO_PLAY, 64 PLAYING, 65 AWAITING_CLIENT_TEARDOWN, 66 STOPPING, 67 STOPPED, 68 }; 69 70 enum { 71 kWhatStart, 72 kWhatRTSPNotify, 73 kWhatStop, 74 kWhatReapDeadClients, 75 kWhatPlaybackSessionNotify, 76 kWhatKeepAlive, 77 kWhatHDCPNotify, 78 kWhatFinishStop2, 79 kWhatTeardownTriggerTimedOut, 80 }; 81 82 struct ResponseID { 83 int32_t mSessionID; 84 int32_t mCSeq; 85 86 bool operator<(const ResponseID &other) const { 87 return mSessionID < other.mSessionID 88 || (mSessionID == other.mSessionID 89 && mCSeq < other.mCSeq); 90 } 91 }; 92 93 typedef status_t (WifiDisplaySource::*HandleRTSPResponseFunc)( 94 int32_t sessionID, const sp<ParsedMessage> &msg); 95 96 static const int64_t kReaperIntervalUs = 1000000ll; 97 98 // We request that the dongle send us a "TEARDOWN" in order to 99 // perform an orderly shutdown. We're willing to wait up to 2 secs 100 // for this message to arrive, after that we'll force a disconnect 101 // instead. 102 static const int64_t kTeardownTriggerTimeouSecs = 2; 103 104 static const int64_t kPlaybackSessionTimeoutSecs = 30; 105 106 static const int64_t kPlaybackSessionTimeoutUs = 107 kPlaybackSessionTimeoutSecs * 1000000ll; 108 109 State mState; 110 sp<ANetworkSession> mNetSession; 111 sp<IRemoteDisplayClient> mClient; 112 struct in_addr mInterfaceAddr; 113 int32_t mSessionID; 114 115 uint32_t mStopReplyID; 116 117 int32_t mClientSessionID; 118 119 struct ClientInfo { 120 AString mRemoteIP; 121 AString mLocalIP; 122 int32_t mLocalPort; 123 int32_t mPlaybackSessionID; 124 sp<PlaybackSession> mPlaybackSession; 125 }; 126 ClientInfo mClientInfo; 127 128 bool mReaperPending; 129 130 int32_t mNextCSeq; 131 132 KeyedVector<ResponseID, HandleRTSPResponseFunc> mResponseHandlers; 133 134#if REQUIRE_HDCP 135 bool mIsHDCP2_0; 136 int32_t mHDCPPort; 137 sp<IHDCP> mHDCP; 138 sp<HDCPObserver> mHDCPObserver; 139 140 bool mHDCPInitializationComplete; 141 bool mSetupTriggerDeferred; 142 143 status_t makeHDCP(); 144#endif 145 146 status_t sendM1(int32_t sessionID); 147 status_t sendM3(int32_t sessionID); 148 status_t sendM4(int32_t sessionID); 149 status_t sendM5(int32_t sessionID, bool requestShutdown); 150 status_t sendM16(int32_t sessionID); 151 152 status_t onReceiveM1Response( 153 int32_t sessionID, const sp<ParsedMessage> &msg); 154 155 status_t onReceiveM3Response( 156 int32_t sessionID, const sp<ParsedMessage> &msg); 157 158 status_t onReceiveM4Response( 159 int32_t sessionID, const sp<ParsedMessage> &msg); 160 161 status_t onReceiveM5Response( 162 int32_t sessionID, const sp<ParsedMessage> &msg); 163 164 status_t onReceiveM16Response( 165 int32_t sessionID, const sp<ParsedMessage> &msg); 166 167 void registerResponseHandler( 168 int32_t sessionID, int32_t cseq, HandleRTSPResponseFunc func); 169 170 status_t onReceiveClientData(const sp<AMessage> &msg); 171 172 status_t onOptionsRequest( 173 int32_t sessionID, 174 int32_t cseq, 175 const sp<ParsedMessage> &data); 176 177 status_t onSetupRequest( 178 int32_t sessionID, 179 int32_t cseq, 180 const sp<ParsedMessage> &data); 181 182 status_t onPlayRequest( 183 int32_t sessionID, 184 int32_t cseq, 185 const sp<ParsedMessage> &data); 186 187 status_t onPauseRequest( 188 int32_t sessionID, 189 int32_t cseq, 190 const sp<ParsedMessage> &data); 191 192 status_t onTeardownRequest( 193 int32_t sessionID, 194 int32_t cseq, 195 const sp<ParsedMessage> &data); 196 197 status_t onGetParameterRequest( 198 int32_t sessionID, 199 int32_t cseq, 200 const sp<ParsedMessage> &data); 201 202 status_t onSetParameterRequest( 203 int32_t sessionID, 204 int32_t cseq, 205 const sp<ParsedMessage> &data); 206 207 void sendErrorResponse( 208 int32_t sessionID, 209 const char *errorDetail, 210 int32_t cseq); 211 212 static void AppendCommonResponse( 213 AString *response, int32_t cseq, int32_t playbackSessionID = -1ll); 214 215 void scheduleReaper(); 216 void scheduleKeepAlive(int32_t sessionID); 217 218 int32_t makeUniquePlaybackSessionID() const; 219 220 sp<PlaybackSession> findPlaybackSession( 221 const sp<ParsedMessage> &data, int32_t *playbackSessionID) const; 222 223 void finishStop(); 224 void disconnectClientAsync(); 225 void disconnectClient2(); 226 void finishStopAfterDisconnectingClient(); 227 void finishStop2(); 228 229 DISALLOW_EVIL_CONSTRUCTORS(WifiDisplaySource); 230}; 231 232} // namespace android 233 234#endif // WIFI_DISPLAY_SOURCE_H_ 235