kopia lustrzana https://gitlab.com/eliggett/wfview
105 wiersze
3.6 KiB
C++
105 wiersze
3.6 KiB
C++
#include "rxaudiohandler.h"
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rxAudioHandler::rxAudioHandler()
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{
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}
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rxAudioHandler::~rxAudioHandler()
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{
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audio->stop();
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delete audio;
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}
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void rxAudioHandler::process()
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{
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qDebug() << "rxAudio Handler created.";
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}
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void rxAudioHandler::setup(const QAudioFormat format, const quint16 bufferSize, const bool isUlaw)
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{
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this->format = format;
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this->bufferSize = bufferSize;
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this->isUlaw = isUlaw;
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audio = new QAudioOutput(format);
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audio->setBufferSize(bufferSize);
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device = audio->start();
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}
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void rxAudioHandler::incomingAudio(const QByteArray data)
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{
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QMutexLocker locker(&mutex);
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if (isUlaw) {
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device->write(uLawDecode(data));
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}
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else {
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device->write(data, data.length());
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}
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}
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void rxAudioHandler::changeBufferSize(const quint16 newSize)
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{
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QMutexLocker locker(&mutex);
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qDebug() << "Changing buffer size to: " << newSize << " from " << audio->bufferSize();
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audio->stop();
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audio->setBufferSize(newSize);
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device = audio->start();
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}
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void rxAudioHandler::getBufferSize()
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{
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emit sendBufferSize(audio->bufferSize());
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}
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QByteArray rxAudioHandler::uLawDecode(const QByteArray in)
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{
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static const qint16 ulaw_decode[256] = {
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-32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
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-23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
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-15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
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-11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
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-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
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-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
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-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
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-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
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-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
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-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
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-876, -844, -812, -780, -748, -716, -684, -652,
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-620, -588, -556, -524, -492, -460, -428, -396,
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-372, -356, -340, -324, -308, -292, -276, -260,
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-244, -228, -212, -196, -180, -164, -148, -132,
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-120, -112, -104, -96, -88, -80, -72, -64,
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-56, -48, -40, -32, -24, -16, -8, 0,
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32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
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23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
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15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
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11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
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7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
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5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
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3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
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2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
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1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
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1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
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876, 844, 812, 780, 748, 716, 684, 652,
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620, 588, 556, 524, 492, 460, 428, 396,
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372, 356, 340, 324, 308, 292, 276, 260,
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244, 228, 212, 196, 180, 164, 148, 132,
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120, 112, 104, 96, 88, 80, 72, 64,
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56, 48, 40, 32, 24, 16, 8, 0 };
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QByteArray out;
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foreach(qint8 const temp, in)
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{
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qint16 decoded = ulaw_decode[0];
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if (temp != 0) {
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decoded = ulaw_decode[static_cast<quint8>(temp)];
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}
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out.append(static_cast<qint8>(decoded & 0xff));
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out.append(static_cast<qint8>(decoded >> 8 & 0xff));
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}
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return out;
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}
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