////  AvatarAudioStream.cpp//  assignment-client/src/audio////  Created by Stephen Birarda on 6/5/13.//  Copyright 2013 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "AvatarAudioStream.h" #include <udt/PacketHeaders.h> #include "AudioLogging.h" AvatarAudioStream::AvatarAudioStream(bool isStereo, int numStaticJitterFrames) :    PositionalAudioStream(PositionalAudioStream::Microphone, isStereo, numStaticJitterFrames) {} int AvatarAudioStream::parseStreamProperties(PacketType type, const QByteArray& packetAfterSeqNum, int& numAudioSamples) {    int readBytes = 0;     if (type == PacketType::SilentAudioFrame) {        const char* dataAt = packetAfterSeqNum.constData();        SilentSamplesBytes numSilentSamples = *(reinterpret_cast<const quint16*>(dataAt));        readBytes += sizeof(SilentSamplesBytes);        numAudioSamples = (int) numSilentSamples;         // read the positional data        readBytes += parsePositionalData(packetAfterSeqNum.mid(readBytes));     } else {        _shouldLoopbackForNode = (type == PacketType::MicrophoneAudioWithEcho);         // read the channel flag        ChannelFlag channelFlag = packetAfterSeqNum.at(readBytes);        bool isStereo = channelFlag == 1;        readBytes += sizeof(ChannelFlag);         // if isStereo value has changed, restart the ring buffer with new frame size        if (isStereo != _isStereo) {            _ringBuffer.resizeForFrameSize(isStereo                                           ? AudioConstants::NETWORK_FRAME_SAMPLES_STEREO                                           : AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL);            // restart the codec            if (_codec) {                QMutexLocker lock(&_decoderMutex);                if (_decoder) {                    _codec->releaseDecoder(_decoder);                }                _decoder = _codec->createDecoder(AudioConstants::SAMPLE_RATE, isStereo ? AudioConstants::STEREO : AudioConstants::MONO);            }            qCDebug(audio) << "resetting AvatarAudioStream... codec:" << _selectedCodecName << "isStereo:" << isStereo;             _isStereo = isStereo;        }         // read the positional data        readBytes += parsePositionalData(packetAfterSeqNum.mid(readBytes));                // calculate how many samples are in this packet        int numAudioBytes = packetAfterSeqNum.size() - readBytes;        numAudioSamples = numAudioBytes / sizeof(int16_t);    }     return readBytes;}