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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/cast/transport/cast_transport_sender_impl.h" | |
| 6 | |
| 7 #include "base/single_thread_task_runner.h" | |
| 8 #include "media/cast/transport/cast_transport_config.h" | |
| 9 #include "media/cast/transport/cast_transport_defines.h" | |
| 10 #include "net/base/net_util.h" | |
| 11 | |
| 12 namespace media { | |
| 13 namespace cast { | |
| 14 namespace transport { | |
| 15 | |
| 16 scoped_ptr<CastTransportSender> CastTransportSender::Create( | |
| 17 net::NetLog* net_log, | |
| 18 base::TickClock* clock, | |
| 19 const net::IPEndPoint& remote_end_point, | |
| 20 const CastTransportStatusCallback& status_callback, | |
| 21 const BulkRawEventsCallback& raw_events_callback, | |
| 22 base::TimeDelta raw_events_callback_interval, | |
| 23 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner) { | |
| 24 return scoped_ptr<CastTransportSender>( | |
| 25 new CastTransportSenderImpl(net_log, | |
| 26 clock, | |
| 27 remote_end_point, | |
| 28 status_callback, | |
| 29 raw_events_callback, | |
| 30 raw_events_callback_interval, | |
| 31 transport_task_runner.get(), | |
| 32 NULL)); | |
| 33 } | |
| 34 | |
| 35 CastTransportSenderImpl::CastTransportSenderImpl( | |
| 36 net::NetLog* net_log, | |
| 37 base::TickClock* clock, | |
| 38 const net::IPEndPoint& remote_end_point, | |
| 39 const CastTransportStatusCallback& status_callback, | |
| 40 const BulkRawEventsCallback& raw_events_callback, | |
| 41 base::TimeDelta raw_events_callback_interval, | |
| 42 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner, | |
| 43 PacketSender* external_transport) | |
| 44 : clock_(clock), | |
| 45 status_callback_(status_callback), | |
| 46 transport_task_runner_(transport_task_runner), | |
| 47 transport_(external_transport ? NULL | |
| 48 : new UdpTransport(net_log, | |
| 49 transport_task_runner, | |
| 50 net::IPEndPoint(), | |
| 51 remote_end_point, | |
| 52 status_callback)), | |
| 53 logging_(), | |
| 54 pacer_(clock, | |
| 55 &logging_, | |
| 56 external_transport ? external_transport : transport_.get(), | |
| 57 transport_task_runner), | |
| 58 rtcp_builder_(&pacer_), | |
| 59 raw_events_callback_(raw_events_callback) { | |
| 60 DCHECK(clock_); | |
| 61 if (!raw_events_callback_.is_null()) { | |
| 62 DCHECK(raw_events_callback_interval > base::TimeDelta()); | |
| 63 event_subscriber_.reset(new SimpleEventSubscriber); | |
| 64 logging_.AddRawEventSubscriber(event_subscriber_.get()); | |
| 65 raw_events_timer_.Start(FROM_HERE, | |
| 66 raw_events_callback_interval, | |
| 67 this, | |
| 68 &CastTransportSenderImpl::SendRawEvents); | |
| 69 } | |
| 70 if (transport_) { | |
| 71 // The default DSCP value for cast is AF41. Which gives it a higher | |
| 72 // priority over other traffic. | |
| 73 transport_->SetDscp(net::DSCP_AF41); | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 CastTransportSenderImpl::~CastTransportSenderImpl() { | |
| 78 if (event_subscriber_.get()) | |
| 79 logging_.RemoveRawEventSubscriber(event_subscriber_.get()); | |
| 80 } | |
| 81 | |
| 82 void CastTransportSenderImpl::InitializeAudio( | |
| 83 const CastTransportRtpConfig& config) { | |
| 84 LOG_IF(WARNING, config.aes_key.empty() || config.aes_iv_mask.empty()) | |
| 85 << "Unsafe to send audio with encryption DISABLED."; | |
| 86 if (!audio_encryptor_.Initialize(config.aes_key, config.aes_iv_mask)) { | |
| 87 status_callback_.Run(TRANSPORT_AUDIO_UNINITIALIZED); | |
| 88 return; | |
| 89 } | |
| 90 audio_sender_.reset(new RtpSender(clock_, transport_task_runner_, &pacer_)); | |
| 91 if (audio_sender_->Initialize(config)) { | |
| 92 pacer_.RegisterAudioSsrc(config.ssrc); | |
| 93 status_callback_.Run(TRANSPORT_AUDIO_INITIALIZED); | |
| 94 } else { | |
| 95 audio_sender_.reset(); | |
| 96 status_callback_.Run(TRANSPORT_AUDIO_UNINITIALIZED); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 void CastTransportSenderImpl::InitializeVideo( | |
| 101 const CastTransportRtpConfig& config) { | |
| 102 LOG_IF(WARNING, config.aes_key.empty() || config.aes_iv_mask.empty()) | |
| 103 << "Unsafe to send video with encryption DISABLED."; | |
| 104 if (!video_encryptor_.Initialize(config.aes_key, config.aes_iv_mask)) { | |
| 105 status_callback_.Run(TRANSPORT_VIDEO_UNINITIALIZED); | |
| 106 return; | |
| 107 } | |
| 108 video_sender_.reset(new RtpSender(clock_, transport_task_runner_, &pacer_)); | |
| 109 if (video_sender_->Initialize(config)) { | |
| 110 pacer_.RegisterVideoSsrc(config.ssrc); | |
| 111 status_callback_.Run(TRANSPORT_VIDEO_INITIALIZED); | |
| 112 } else { | |
| 113 video_sender_.reset(); | |
| 114 status_callback_.Run(TRANSPORT_VIDEO_UNINITIALIZED); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 void CastTransportSenderImpl::SetPacketReceiver( | |
| 119 const PacketReceiverCallback& packet_receiver) { | |
| 120 transport_->StartReceiving(packet_receiver); | |
| 121 } | |
| 122 | |
| 123 namespace { | |
| 124 void EncryptAndSendFrame(const EncodedFrame& frame, | |
| 125 TransportEncryptionHandler* encryptor, | |
| 126 RtpSender* sender) { | |
| 127 if (encryptor->is_activated()) { | |
| 128 EncodedFrame encrypted_frame; | |
| 129 frame.CopyMetadataTo(&encrypted_frame); | |
| 130 if (encryptor->Encrypt(frame.frame_id, frame.data, &encrypted_frame.data)) { | |
| 131 sender->SendFrame(encrypted_frame); | |
| 132 } else { | |
| 133 LOG(ERROR) << "Encryption failed. Not sending frame with ID " | |
| 134 << frame.frame_id; | |
| 135 } | |
| 136 } else { | |
| 137 sender->SendFrame(frame); | |
| 138 } | |
| 139 } | |
| 140 } // namespace | |
| 141 | |
| 142 void CastTransportSenderImpl::InsertCodedAudioFrame( | |
| 143 const EncodedFrame& audio_frame) { | |
| 144 DCHECK(audio_sender_) << "Audio sender uninitialized"; | |
| 145 EncryptAndSendFrame(audio_frame, &audio_encryptor_, audio_sender_.get()); | |
| 146 } | |
| 147 | |
| 148 void CastTransportSenderImpl::InsertCodedVideoFrame( | |
| 149 const EncodedFrame& video_frame) { | |
| 150 DCHECK(video_sender_) << "Video sender uninitialized"; | |
| 151 EncryptAndSendFrame(video_frame, &video_encryptor_, video_sender_.get()); | |
| 152 } | |
| 153 | |
| 154 void CastTransportSenderImpl::SendRtcpFromRtpSender( | |
| 155 uint32 packet_type_flags, | |
| 156 uint32 ntp_seconds, | |
| 157 uint32 ntp_fraction, | |
| 158 uint32 rtp_timestamp, | |
| 159 const RtcpDlrrReportBlock& dlrr, | |
| 160 uint32 sending_ssrc, | |
| 161 const std::string& c_name) { | |
| 162 RtcpSenderInfo sender_info; | |
| 163 sender_info.ntp_seconds = ntp_seconds; | |
| 164 sender_info.ntp_fraction = ntp_fraction; | |
| 165 sender_info.rtp_timestamp = rtp_timestamp; | |
| 166 if (audio_sender_ && audio_sender_->ssrc() == sending_ssrc) { | |
| 167 sender_info.send_packet_count = audio_sender_->send_packet_count(); | |
| 168 sender_info.send_octet_count = audio_sender_->send_octet_count(); | |
| 169 } else if (video_sender_ && video_sender_->ssrc() == sending_ssrc) { | |
| 170 sender_info.send_packet_count = video_sender_->send_packet_count(); | |
| 171 sender_info.send_octet_count = video_sender_->send_octet_count(); | |
| 172 } else { | |
| 173 LOG(ERROR) << "Sending RTCP with an invalid SSRC."; | |
| 174 return; | |
| 175 } | |
| 176 rtcp_builder_.SendRtcpFromRtpSender( | |
| 177 packet_type_flags, sender_info, dlrr, sending_ssrc, c_name); | |
| 178 } | |
| 179 | |
| 180 void CastTransportSenderImpl::ResendPackets( | |
| 181 bool is_audio, | |
| 182 const MissingFramesAndPacketsMap& missing_packets, | |
| 183 bool cancel_rtx_if_not_in_list, | |
| 184 base::TimeDelta dedupe_window) { | |
| 185 if (is_audio) { | |
| 186 DCHECK(audio_sender_) << "Audio sender uninitialized"; | |
| 187 audio_sender_->ResendPackets(missing_packets, | |
| 188 cancel_rtx_if_not_in_list, | |
| 189 dedupe_window); | |
| 190 } else { | |
| 191 DCHECK(video_sender_) << "Video sender uninitialized"; | |
| 192 video_sender_->ResendPackets(missing_packets, | |
| 193 cancel_rtx_if_not_in_list, | |
| 194 dedupe_window); | |
| 195 } | |
| 196 } | |
| 197 | |
| 198 void CastTransportSenderImpl::SendRawEvents() { | |
| 199 DCHECK(event_subscriber_.get()); | |
| 200 DCHECK(!raw_events_callback_.is_null()); | |
| 201 std::vector<PacketEvent> packet_events; | |
| 202 event_subscriber_->GetPacketEventsAndReset(&packet_events); | |
| 203 raw_events_callback_.Run(packet_events); | |
| 204 } | |
| 205 | |
| 206 } // namespace transport | |
| 207 } // namespace cast | |
| 208 } // namespace media | |
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Chromium Code Reviews
Issue 388663003:
Cast: Reshuffle files under media/cast (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src