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 28 namespace android { 29 30 struct ABuffer; 31 struct ANetworkSession; 32 struct AMessage; 33 struct IHDCP; 34 struct 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. 41 struct 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 const char *remoteHost, 63 int32_t remoteRTPPort, 64 RTPSender::TransportMode rtpMode, 65 int32_t remoteRTCPPort, 66 RTPSender::TransportMode rtcpMode, 67 int32_t *localRTPPort); 68 69 status_t queueAccessUnit( 70 size_t trackIndex, const sp<ABuffer> &accessUnit); 71 72 protected: 73 virtual void onMessageReceived(const sp<AMessage> &msg); 74 virtual ~MediaSender(); 75 76 private: 77 enum { 78 kWhatSenderNotify, 79 }; 80 81 enum Mode { 82 MODE_UNDEFINED, 83 MODE_TRANSPORT_STREAM, 84 MODE_ELEMENTARY_STREAMS, 85 }; 86 87 struct TrackInfo { 88 sp<AMessage> mFormat; 89 uint32_t mFlags; 90 sp<RTPSender> mSender; 91 List<sp<ABuffer> > mAccessUnits; 92 ssize_t mPacketizerTrackIndex; 93 bool mIsAudio; 94 }; 95 96 sp<ANetworkSession> mNetSession; 97 sp<AMessage> mNotify; 98 99 sp<IHDCP> mHDCP; 100 101 Mode mMode; 102 int32_t mGeneration; 103 104 Vector<TrackInfo> mTrackInfos; 105 106 sp<TSPacketizer> mTSPacketizer; 107 sp<RTPSender> mTSSender; 108 int64_t mPrevTimeUs; 109 110 size_t mInitDoneCount; 111 112 FILE *mLogFile; 113 114 void onSenderNotify(const sp<AMessage> &msg); 115 116 void notifyInitDone(status_t err); 117 void notifyError(status_t err); 118 void notifyNetworkStall(size_t numBytesQueued); 119 120 status_t packetizeAccessUnit( 121 size_t trackIndex, 122 sp<ABuffer> accessUnit, 123 sp<ABuffer> *tsPackets); 124 125 DISALLOW_EVIL_CONSTRUCTORS(MediaSender); 126 }; 127 128 } // namespace android 129 130 #endif // MEDIA_SENDER_H_ 131 132