1 /* 2 * Copyright (C) 2010 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 A_RTP_CONNECTION_H_ 18 19 #define A_RTP_CONNECTION_H_ 20 21 #include <media/stagefright/foundation/AHandler.h> 22 #include <utils/List.h> 23 24 namespace android { 25 26 struct ABuffer; 27 struct ARTPSource; 28 struct ASessionDescription; 29 30 struct ARTPConnection : public AHandler { 31 enum Flags { 32 kRegularlyRequestFIR = 2, 33 }; 34 35 ARTPConnection(uint32_t flags = 0); 36 37 void addStream( 38 int rtpSocket, int rtcpSocket, 39 const sp<ASessionDescription> &sessionDesc, size_t index, 40 const sp<AMessage> ¬ify, 41 bool injected); 42 43 void removeStream(int rtpSocket, int rtcpSocket); 44 45 void injectPacket(int index, const sp<ABuffer> &buffer); 46 47 // Creates a pair of UDP datagram sockets bound to adjacent ports 48 // (the rtpSocket is bound to an even port, the rtcpSocket to the 49 // next higher port). 50 static void MakePortPair( 51 int *rtpSocket, int *rtcpSocket, unsigned *rtpPort); 52 53 protected: 54 virtual ~ARTPConnection(); 55 virtual void onMessageReceived(const sp<AMessage> &msg); 56 57 private: 58 enum { 59 kWhatAddStream, 60 kWhatRemoveStream, 61 kWhatPollStreams, 62 kWhatInjectPacket, 63 }; 64 65 static const int64_t kSelectTimeoutUs; 66 67 uint32_t mFlags; 68 69 struct StreamInfo; 70 List<StreamInfo> mStreams; 71 72 bool mPollEventPending; 73 int64_t mLastReceiverReportTimeUs; 74 75 void onAddStream(const sp<AMessage> &msg); 76 void onRemoveStream(const sp<AMessage> &msg); 77 void onPollStreams(); 78 void onInjectPacket(const sp<AMessage> &msg); 79 void onSendReceiverReports(); 80 81 status_t receive(StreamInfo *info, bool receiveRTP); 82 83 status_t parseRTP(StreamInfo *info, const sp<ABuffer> &buffer); 84 status_t parseRTCP(StreamInfo *info, const sp<ABuffer> &buffer); 85 status_t parseSR(StreamInfo *info, const uint8_t *data, size_t size); 86 status_t parseBYE(StreamInfo *info, const uint8_t *data, size_t size); 87 88 sp<ARTPSource> findSource(StreamInfo *info, uint32_t id); 89 90 void postPollEvent(); 91 92 DISALLOW_EVIL_CONSTRUCTORS(ARTPConnection); 93 }; 94 95 } // namespace android 96 97 #endif // A_RTP_CONNECTION_H_ 98