101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
#include "audiodevice.h"
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// Qt includes
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#include <QIODevice>
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#include <QAudioInput>
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#include <QDebug>
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namespace {
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//! private helper to allow QAudioInput to write to a io device
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class AudioDeviceHelper : public QIODevice
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{
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public:
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explicit AudioDeviceHelper(AudioDevice &audioDevice);
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~AudioDeviceHelper();
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qint64 readData(char *data, qint64 maxlen) override;
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qint64 writeData(const char *data, qint64 len) override;
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private:
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AudioDevice &m_audioDevice;
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};
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struct AudioDevicePrivate {
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AudioDevicePrivate(AudioDevice &audioDevice, const QAudioDeviceInfo &audioDeviceInfo, const QAudioFormat &format) :
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helper(audioDevice), input(audioDeviceInfo, format)
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{
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qDebug() << audioDeviceInfo.deviceName();
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}
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~AudioDevicePrivate()
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{
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qDebug() << "called";
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}
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AudioDeviceHelper helper;
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QAudioInput input;
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};
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}
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AudioDevice::AudioDevice(QObject *parent) :
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BaseDevice{parent}
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{
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}
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AudioDevice::~AudioDevice() = default;
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void AudioDevice::start()
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{
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qDebug() << m_device.deviceName();
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QAudioFormat format;
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format.setSampleRate(m_samplerate);
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format.setChannelCount(2);
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format.setSampleSize(16);
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format.setSampleType(QAudioFormat::SignedInt);
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format.setCodec("audio/pcm");
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format.setByteOrder(QAudioFormat::LittleEndian);
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m_private = std::make_unique<AudioDevicePrivate>(*this, m_device, format);
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m_private->input.start(&m_private->helper);
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//m_private->input.setBufferSize(m_samplerate/m_framerate*sizeof(qint16)*2);
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}
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void AudioDevice::stop()
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{
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qDebug() << "called";
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m_private = nullptr;
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}
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namespace {
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AudioDeviceHelper::AudioDeviceHelper(AudioDevice &audioDevice) :
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QIODevice(&audioDevice),
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m_audioDevice(audioDevice)
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{
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qDebug() << "called";
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setOpenMode(QIODevice::WriteOnly);
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}
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AudioDeviceHelper::~AudioDeviceHelper()
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{
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qDebug() << "called";
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}
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qint64 AudioDeviceHelper::readData(char *data, qint64 maxlen)
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{
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Q_UNUSED(data)
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Q_UNUSED(maxlen)
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qFatal("reading is not allowed!");
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}
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qint64 AudioDeviceHelper::writeData(const char *data, qint64 len)
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{
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Q_ASSERT(len % sizeof(SamplePair) == 0);
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emit m_audioDevice.samplesReceived(reinterpret_cast<const SamplePair*>(data),
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reinterpret_cast<const SamplePair*>(data + (len/sizeof(SamplePair))));
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return len;
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}
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}
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