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104 lines
3.9 KiB
C++
104 lines
3.9 KiB
C++
//
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// AudioMixerClientData.cpp
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// hifi
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//
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// Created by Stephen Birarda on 10/18/13.
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// Copyright (c) 2013 HighFidelity, Inc. All rights reserved.
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//
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#include <PacketHeaders.h>
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#include <UUID.h>
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#include "InjectedAudioRingBuffer.h"
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#include "AudioMixerClientData.h"
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AudioMixerClientData::~AudioMixerClientData() {
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for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
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// delete this attached PositionalAudioRingBuffer
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delete _ringBuffers[i];
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}
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}
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AvatarAudioRingBuffer* AudioMixerClientData::getAvatarAudioRingBuffer() const {
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for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
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if (_ringBuffers[i]->getType() == PositionalAudioRingBuffer::Microphone) {
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return (AvatarAudioRingBuffer*) _ringBuffers[i];
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}
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}
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// no AvatarAudioRingBuffer found - return NULL
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return NULL;
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}
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int AudioMixerClientData::parseData(unsigned char* packetData, int numBytes) {
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if (packetData[0] == PACKET_TYPE_MICROPHONE_AUDIO_WITH_ECHO
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|| packetData[0] == PACKET_TYPE_MICROPHONE_AUDIO_NO_ECHO) {
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// grab the AvatarAudioRingBuffer from the vector (or create it if it doesn't exist)
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AvatarAudioRingBuffer* avatarRingBuffer = getAvatarAudioRingBuffer();
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if (!avatarRingBuffer) {
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// we don't have an AvatarAudioRingBuffer yet, so add it
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avatarRingBuffer = new AvatarAudioRingBuffer();
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_ringBuffers.push_back(avatarRingBuffer);
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}
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// ask the AvatarAudioRingBuffer instance to parse the data
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avatarRingBuffer->parseData(packetData, numBytes);
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} else {
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// this is injected audio
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// grab the stream identifier for this injected audio
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QByteArray rfcUUID = QByteArray((char*) packetData + numBytesForPacketHeader(packetData) + NUM_BYTES_RFC4122_UUID,
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NUM_BYTES_RFC4122_UUID);
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QUuid streamIdentifier = QUuid::fromRfc4122(rfcUUID);
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InjectedAudioRingBuffer* matchingInjectedRingBuffer = NULL;
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for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
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if (_ringBuffers[i]->getType() == PositionalAudioRingBuffer::Injector
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&& ((InjectedAudioRingBuffer*) _ringBuffers[i])->getStreamIdentifier() == streamIdentifier) {
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matchingInjectedRingBuffer = (InjectedAudioRingBuffer*) _ringBuffers[i];
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}
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}
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if (!matchingInjectedRingBuffer) {
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// we don't have a matching injected audio ring buffer, so add it
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matchingInjectedRingBuffer = new InjectedAudioRingBuffer(streamIdentifier);
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_ringBuffers.push_back(matchingInjectedRingBuffer);
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}
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matchingInjectedRingBuffer->parseData(packetData, numBytes);
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}
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return 0;
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}
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void AudioMixerClientData::checkBuffersBeforeFrameSend(int jitterBufferLengthSamples) {
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for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
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if (_ringBuffers[i]->shouldBeAddedToMix(jitterBufferLengthSamples)) {
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// this is a ring buffer that is ready to go
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// set its flag so we know to push its buffer when all is said and done
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_ringBuffers[i]->setWillBeAddedToMix(true);
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}
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}
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}
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void AudioMixerClientData::pushBuffersAfterFrameSend() {
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for (unsigned int i = 0; i < _ringBuffers.size(); i++) {
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// this was a used buffer, push the output pointer forwards
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PositionalAudioRingBuffer* audioBuffer = _ringBuffers[i];
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if (audioBuffer->willBeAddedToMix()) {
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audioBuffer->shiftReadPosition(NETWORK_BUFFER_LENGTH_SAMPLES_PER_CHANNEL);
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audioBuffer->setWillBeAddedToMix(false);
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} else if (audioBuffer->getType() == PositionalAudioRingBuffer::Injector
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&& audioBuffer->hasStarted() && audioBuffer->isStarved()) {
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// this is an empty audio buffer that has starved, safe to delete
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delete audioBuffer;
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_ringBuffers.erase(_ringBuffers.begin() + i);
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}
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}
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}
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