void sendEnvironmentPacket(const SharedNodePointer& node, AudioMixerClientData& data) {
bool hasReverb = false;
float reverbTime, wetLevel;
auto& reverbSettings = AudioMixer::getReverbSettings();
auto& audioZones = AudioMixer::getAudioZones();
AvatarAudioStream* stream = data.getAvatarAudioStream();
glm::vec3 streamPosition = stream->getPosition();
// find reverb properties
for (int i = 0; i < reverbSettings.size(); ++i) {
AABox box = audioZones[reverbSettings[i].zone];
if (box.contains(streamPosition)) {
hasReverb = true;
reverbTime = reverbSettings[i].reverbTime;
wetLevel = reverbSettings[i].wetLevel;
break;
}
}
// check if data changed
bool dataChanged = (stream->hasReverb() != hasReverb) ||
(stream->hasReverb() && (stream->getRevebTime() != reverbTime || stream->getWetLevel() != wetLevel));
if (dataChanged) {
// update stream
if (hasReverb) {
stream->setReverb(reverbTime, wetLevel);
} else {
stream->clearReverb();
}
}
// send packet at change or every so often
float CHANCE_OF_SEND = 0.01f;
bool sendData = dataChanged || (randFloat() < CHANCE_OF_SEND);
if (sendData) {
// size the packet
unsigned char bitset = 0;
int packetSize = sizeof(bitset);
if (hasReverb) {
packetSize += sizeof(reverbTime) + sizeof(wetLevel);
}
// write the packet
auto envPacket = NLPacket::create(PacketType::AudioEnvironment, packetSize);
if (hasReverb) {
setAtBit(bitset, HAS_REVERB_BIT);
}
envPacket->writePrimitive(bitset);
if (hasReverb) {
envPacket->writePrimitive(reverbTime);
envPacket->writePrimitive(wetLevel);
}
// send the packet
DependencyManager::get<NodeList>()->sendPacket(std::move(envPacket), *node);
}
}
void AudioMixer::sendAudioEnvironmentPacket(SharedNodePointer node) {
// Send stream properties
bool hasReverb = false;
float reverbTime, wetLevel;
// find reverb properties
for (int i = 0; i < _zoneReverbSettings.size(); ++i) {
AudioMixerClientData* data = static_cast<AudioMixerClientData*>(node->getLinkedData());
glm::vec3 streamPosition = data->getAvatarAudioStream()->getPosition();
AABox box = _audioZones[_zoneReverbSettings[i].zone];
if (box.contains(streamPosition)) {
hasReverb = true;
reverbTime = _zoneReverbSettings[i].reverbTime;
wetLevel = _zoneReverbSettings[i].wetLevel;
// Modulate wet level with distance to wall
float MIN_ATTENUATION_DISTANCE = 2.0f;
float MAX_ATTENUATION = -12; // dB
glm::vec3 distanceToWalls = (box.getDimensions() / 2.0f) - glm::abs(streamPosition - box.calcCenter());
float distanceToClosestWall = glm::min(distanceToWalls.x, distanceToWalls.z);
if (distanceToClosestWall < MIN_ATTENUATION_DISTANCE) {
wetLevel += MAX_ATTENUATION * (1.0f - distanceToClosestWall / MIN_ATTENUATION_DISTANCE);
}
break;
}
}
AudioMixerClientData* nodeData = static_cast<AudioMixerClientData*>(node->getLinkedData());
AvatarAudioStream* stream = nodeData->getAvatarAudioStream();
bool dataChanged = (stream->hasReverb() != hasReverb) ||
(stream->hasReverb() && (stream->getRevebTime() != reverbTime ||
stream->getWetLevel() != wetLevel));
if (dataChanged) {
// Update stream
if (hasReverb) {
stream->setReverb(reverbTime, wetLevel);
} else {
stream->clearReverb();
}
}
// Send at change or every so often
float CHANCE_OF_SEND = 0.01f;
bool sendData = dataChanged || (randFloat() < CHANCE_OF_SEND);
if (sendData) {
auto nodeList = DependencyManager::get<NodeList>();
unsigned char bitset = 0;
int packetSize = sizeof(bitset);
if (hasReverb) {
packetSize += sizeof(reverbTime) + sizeof(wetLevel);
}
auto envPacket = NLPacket::create(PacketType::AudioEnvironment, packetSize);
if (hasReverb) {
setAtBit(bitset, HAS_REVERB_BIT);
}
envPacket->writePrimitive(bitset);
if (hasReverb) {
envPacket->writePrimitive(reverbTime);
envPacket->writePrimitive(wetLevel);
}
nodeList->sendPacket(std::move(envPacket), *node);
}
}