MediaSender.h revision 126568c7aeeb5570789e70a310477f44dbdbd885
1/* 2 * Copyright 2013, 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 MEDIA_SENDER_H_ 18 19#define MEDIA_SENDER_H_ 20 21#include "rtp/RTPSender.h" 22 23#include <media/stagefright/foundation/ABase.h> 24#include <media/stagefright/foundation/AHandler.h> 25#include <utils/Errors.h> 26#include <utils/Vector.h> 27 28namespace android { 29 30struct ABuffer; 31struct ANetworkSession; 32struct AMessage; 33struct IHDCP; 34struct TSPacketizer; 35 36// This class facilitates sending of data from one or more media tracks 37// through one or more RTP channels, either providing a 1:1 mapping from 38// track to RTP channel or muxing all tracks into a single RTP channel and 39// using transport stream encapsulation. 40// Optionally the (video) data is encrypted using the provided hdcp object. 41struct MediaSender : public AHandler { 42 enum { 43 kWhatInitDone, 44 kWhatError, 45 kWhatNetworkStall, 46 }; 47 48 MediaSender( 49 const sp<ANetworkSession> &netSession, 50 const sp<AMessage> ¬ify); 51 52 status_t setHDCP(const sp<IHDCP> &hdcp); 53 54 enum FlagBits { 55 FLAG_MANUALLY_PREPEND_SPS_PPS = 1, 56 }; 57 ssize_t addTrack(const sp<AMessage> &format, uint32_t flags); 58 59 // If trackIndex == -1, initialize for transport stream muxing. 60 status_t initAsync( 61 ssize_t trackIndex, 62 RTPSender::TransportMode transportMode, 63 const char *remoteHost, 64 int32_t remoteRTPPort, 65 int32_t remoteRTCPPort, 66 int32_t *localRTPPort); 67 68 status_t queueAccessUnit( 69 size_t trackIndex, const sp<ABuffer> &accessUnit); 70 71protected: 72 virtual void onMessageReceived(const sp<AMessage> &msg); 73 virtual ~MediaSender(); 74 75private: 76 enum { 77 kWhatSenderNotify, 78 }; 79 80 enum Mode { 81 MODE_UNDEFINED, 82 MODE_TRANSPORT_STREAM, 83 MODE_ELEMENTARY_STREAMS, 84 }; 85 86 struct TrackInfo { 87 sp<AMessage> mFormat; 88 uint32_t mFlags; 89 sp<RTPSender> mSender; 90 List<sp<ABuffer> > mAccessUnits; 91 ssize_t mPacketizerTrackIndex; 92 bool mIsAudio; 93 }; 94 95 sp<ANetworkSession> mNetSession; 96 sp<AMessage> mNotify; 97 98 sp<IHDCP> mHDCP; 99 100 Mode mMode; 101 int32_t mGeneration; 102 103 Vector<TrackInfo> mTrackInfos; 104 105 sp<TSPacketizer> mTSPacketizer; 106 sp<RTPSender> mTSSender; 107 int64_t mPrevTimeUs; 108 109 size_t mInitDoneCount; 110 111 FILE *mLogFile; 112 113 void onSenderNotify(const sp<AMessage> &msg); 114 115 void notifyInitDone(status_t err); 116 void notifyError(status_t err); 117 void notifyNetworkStall(size_t numBytesQueued); 118 119 status_t packetizeAccessUnit( 120 size_t trackIndex, 121 sp<ABuffer> accessUnit, 122 sp<ABuffer> *tsPackets); 123 124 DISALLOW_EVIL_CONSTRUCTORS(MediaSender); 125}; 126 127} // namespace android 128 129#endif // MEDIA_SENDER_H_ 130 131