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 24namespace android { 25 26struct ABuffer; 27struct ARTPSource; 28struct ASessionDescription; 29 30struct ARTPConnection : public AHandler { 31 enum Flags { 32 kFakeTimestamps = 1, 33 kRegularlyRequestFIR = 2, 34 }; 35 36 ARTPConnection(uint32_t flags = 0); 37 38 void addStream( 39 int rtpSocket, int rtcpSocket, 40 const sp<ASessionDescription> &sessionDesc, size_t index, 41 const sp<AMessage> ¬ify, 42 bool injected); 43 44 void removeStream(int rtpSocket, int rtcpSocket); 45 46 void injectPacket(int index, const sp<ABuffer> &buffer); 47 48 // Creates a pair of UDP datagram sockets bound to adjacent ports 49 // (the rtpSocket is bound to an even port, the rtcpSocket to the 50 // next higher port). 51 static void MakePortPair( 52 int *rtpSocket, int *rtcpSocket, unsigned *rtpPort); 53 54 void fakeTimestamps(); 55 56protected: 57 virtual ~ARTPConnection(); 58 virtual void onMessageReceived(const sp<AMessage> &msg); 59 60private: 61 enum { 62 kWhatAddStream, 63 kWhatRemoveStream, 64 kWhatPollStreams, 65 kWhatInjectPacket, 66 kWhatFakeTimestamps, 67 }; 68 69 static const int64_t kSelectTimeoutUs; 70 71 uint32_t mFlags; 72 73 struct StreamInfo; 74 List<StreamInfo> mStreams; 75 76 bool mPollEventPending; 77 int64_t mLastReceiverReportTimeUs; 78 79 void onAddStream(const sp<AMessage> &msg); 80 void onRemoveStream(const sp<AMessage> &msg); 81 void onPollStreams(); 82 void onInjectPacket(const sp<AMessage> &msg); 83 void onSendReceiverReports(); 84 void onFakeTimestamps(); 85 86 status_t receive(StreamInfo *info, bool receiveRTP); 87 88 status_t parseRTP(StreamInfo *info, const sp<ABuffer> &buffer); 89 status_t parseRTCP(StreamInfo *info, const sp<ABuffer> &buffer); 90 status_t parseSR(StreamInfo *info, const uint8_t *data, size_t size); 91 status_t parseBYE(StreamInfo *info, const uint8_t *data, size_t size); 92 93 sp<ARTPSource> findSource(StreamInfo *info, uint32_t id); 94 95 void postPollEvent(); 96 97 DISALLOW_EVIL_CONSTRUCTORS(ARTPConnection); 98}; 99 100} // namespace android 101 102#endif // A_RTP_CONNECTION_H_ 103