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| 1 /* | |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include "webrtc/video/audio_receive_stream.h" | |
| 12 | |
| 13 #include <string> | |
| 14 | |
| 15 #include "webrtc/base/checks.h" | |
| 16 #include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimat
or.h" | |
| 17 #include "webrtc/system_wrappers/interface/tick_util.h" | |
| 18 | |
| 19 namespace webrtc { | |
| 20 std::string AudioReceiveStream::Config::Rtp::ToString() const { | |
| 21 std::stringstream ss; | |
| 22 ss << "{remote_ssrc: " << remote_ssrc; | |
| 23 ss << ", extensions: ["; | |
| 24 for (size_t i = 0; i < extensions.size(); ++i) { | |
| 25 ss << extensions[i].ToString(); | |
| 26 if (i != extensions.size() - 1) | |
| 27 ss << ", "; | |
| 28 } | |
| 29 ss << ']'; | |
| 30 ss << '}'; | |
| 31 return ss.str(); | |
| 32 } | |
| 33 | |
| 34 std::string AudioReceiveStream::Config::ToString() const { | |
| 35 std::stringstream ss; | |
| 36 ss << "{rtp: " << rtp.ToString(); | |
| 37 ss << ", voe_channel_id: " << voe_channel_id; | |
| 38 if (!sync_group.empty()) | |
| 39 ss << ", sync_group: " << sync_group; | |
| 40 ss << '}'; | |
| 41 return ss.str(); | |
| 42 } | |
| 43 | |
| 44 namespace internal { | |
| 45 AudioReceiveStream::AudioReceiveStream( | |
| 46 RemoteBitrateEstimator* remote_bitrate_estimator, | |
| 47 const webrtc::AudioReceiveStream::Config& config) | |
| 48 : remote_bitrate_estimator_(remote_bitrate_estimator), | |
| 49 config_(config), | |
| 50 rtp_header_parser_(RtpHeaderParser::Create()) { | |
| 51 RTC_DCHECK(config.voe_channel_id != -1); | |
| 52 RTC_DCHECK(remote_bitrate_estimator_ != nullptr); | |
| 53 RTC_DCHECK(rtp_header_parser_ != nullptr); | |
| 54 for (const auto& ext : config.rtp.extensions) { | |
| 55 // One-byte-extension local identifiers are in the range 1-14 inclusive. | |
| 56 RTC_DCHECK_GE(ext.id, 1); | |
| 57 RTC_DCHECK_LE(ext.id, 14); | |
| 58 if (ext.name == RtpExtension::kAudioLevel) { | |
| 59 RTC_CHECK(rtp_header_parser_->RegisterRtpHeaderExtension( | |
| 60 kRtpExtensionAudioLevel, ext.id)); | |
| 61 } else if (ext.name == RtpExtension::kAbsSendTime) { | |
| 62 RTC_CHECK(rtp_header_parser_->RegisterRtpHeaderExtension( | |
| 63 kRtpExtensionAbsoluteSendTime, ext.id)); | |
| 64 } else if (ext.name == RtpExtension::kTransportSequenceNumber) { | |
| 65 RTC_CHECK(rtp_header_parser_->RegisterRtpHeaderExtension( | |
| 66 kRtpExtensionTransportSequenceNumber, ext.id)); | |
| 67 } else { | |
| 68 RTC_NOTREACHED() << "Unsupported RTP extension."; | |
| 69 } | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 webrtc::AudioReceiveStream::Stats AudioReceiveStream::GetStats() const { | |
| 74 return webrtc::AudioReceiveStream::Stats(); | |
| 75 } | |
| 76 | |
| 77 void AudioReceiveStream::Start() { | |
| 78 } | |
| 79 | |
| 80 void AudioReceiveStream::Stop() { | |
| 81 } | |
| 82 | |
| 83 void AudioReceiveStream::SignalNetworkState(NetworkState state) { | |
| 84 } | |
| 85 | |
| 86 bool AudioReceiveStream::DeliverRtcp(const uint8_t* packet, size_t length) { | |
| 87 return false; | |
| 88 } | |
| 89 | |
| 90 bool AudioReceiveStream::DeliverRtp(const uint8_t* packet, | |
| 91 size_t length, | |
| 92 const PacketTime& packet_time) { | |
| 93 RTPHeader header; | |
| 94 | |
| 95 if (!rtp_header_parser_->Parse(packet, length, &header)) { | |
| 96 return false; | |
| 97 } | |
| 98 | |
| 99 // Only forward if the parsed header has absolute sender time. RTP timestamps | |
| 100 // may have different rates for audio and video and shouldn't be mixed. | |
| 101 if (config_.combined_audio_video_bwe && | |
| 102 header.extension.hasAbsoluteSendTime) { | |
| 103 int64_t arrival_time_ms = TickTime::MillisecondTimestamp(); | |
| 104 if (packet_time.timestamp >= 0) | |
| 105 arrival_time_ms = (packet_time.timestamp + 500) / 1000; | |
| 106 size_t payload_size = length - header.headerLength; | |
| 107 remote_bitrate_estimator_->IncomingPacket(arrival_time_ms, payload_size, | |
| 108 header, false); | |
| 109 } | |
| 110 return true; | |
| 111 } | |
| 112 } // namespace internal | |
| 113 } // namespace webrtc | |
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