pa_sample_spec audioFormatToSampleSpec(const QAudioFormat &format)
{
pa_sample_spec spec;
spec.rate = format.frequency();
spec.channels = format.channels();
if (format.sampleSize() == 8) {
spec.format = PA_SAMPLE_U8;
} else if (format.sampleSize() == 16) {
switch (format.byteOrder()) {
case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S16BE; break;
case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S16LE; break;
}
} else if (format.sampleSize() == 24) {
switch (format.byteOrder()) {
case QAudioFormat::BigEndian: spec.format = PA_SAMPLE_S24BE; break;
case QAudioFormat::LittleEndian: spec.format = PA_SAMPLE_S24LE; break;
}
} else if (format.sampleSize() == 32) {
switch (format.byteOrder()) {
case QAudioFormat::BigEndian:
format.sampleType() == QAudioFormat::Float ? spec.format = PA_SAMPLE_FLOAT32BE : spec.format = PA_SAMPLE_S32BE;
break;
case QAudioFormat::LittleEndian:
format.sampleType() == QAudioFormat::Float ? spec.format = PA_SAMPLE_FLOAT32LE : spec.format = PA_SAMPLE_S32LE;
break;
}
} else {
spec.format = PA_SAMPLE_INVALID;
}
return spec;
}
QAudioFormat QAudioDeviceInfo::nearestFormat(const QAudioFormat &settings) const
{
if (isFormatSupported(settings))
return settings;
QAudioFormat nearest = settings;
nearest.setCodec(QLatin1String("audio/pcm"));
if (nearest.sampleType() == QAudioFormat::Unknown) {
QAudioFormat preferred = preferredFormat();
nearest.setSampleType(preferred.sampleType());
}
QMap<int,int> testFrequencies;
QList<int> frequenciesAvailable = supportedFrequencies();
QMap<int,int> testSampleSizes;
QList<int> sampleSizesAvailable = supportedSampleSizes();
// Get sorted sampleSizes (equal to and ascending values only)
if (sampleSizesAvailable.contains(settings.sampleSize()))
testSampleSizes.insert(0,settings.sampleSize());
sampleSizesAvailable.removeAll(settings.sampleSize());
foreach (int size, sampleSizesAvailable) {
int larger = (size > settings.sampleSize()) ? size : settings.sampleSize();
int smaller = (size > settings.sampleSize()) ? settings.sampleSize() : size;
if (size >= settings.sampleSize()) {
int diff = larger - smaller;
testSampleSizes.insert(diff, size);
}
}
ViAudioFormat::ViAudioFormat(const QAudioFormat &other)
{
if(other.sampleType() == QAudioFormat::SignedInt)
{
setSampleType(ViAudioFormat::SignedInt);
}
else if(other.sampleType() == QAudioFormat::UnSignedInt)
{
setSampleType(ViAudioFormat::UnSignedInt);
}
else if(other.sampleType() == QAudioFormat::Float)
{
setSampleType(ViAudioFormat::Float);
}
else
{
setSampleSize(ViAudioFormat::Unknown);
}
if(other.byteOrder() == QAudioFormat::BigEndian)
{
setByteOrder(ViAudioFormat::BigEndian);
}
else
{
setByteOrder(ViAudioFormat::LittleEndian);
}
mQuality = ViAudioFormat::Average;
mSampleSize = other.sampleSize();
mSampleRate = other.sampleRate();
mChannelCount = other.channelCount();
mCodec = NULL;
}
void Generator::generateData(const QAudioFormat &format, qint64 durationUs, int sampleRate)
{
const int channelBytes = format.sampleSize() / 8;//разрядность
const int sampleBytes = format.channelCount() * channelBytes;//количество байт умнож на кол-во каналов
qint64 length = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8))
* durationUs / 1000000;
Q_ASSERT(length % sampleBytes == 0);
Q_UNUSED(sampleBytes) // suppress warning in release builds
m_buffer.resize(length);
unsigned char *ptr = reinterpret_cast<unsigned char *>(m_buffer.data());
int sampleIndex = 0;
while (length)
{
const qreal x = qSin(2 * M_PI * sampleRate * qreal(sampleIndex % format.sampleRate()) / format.sampleRate());
for (int i=0; i<format.channelCount(); ++i)
{
if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::UnSignedInt)
{
const quint8 value = static_cast<quint8>((1.0 + x) / 2 * 255);
*reinterpret_cast<quint8*>(ptr) = value;
}
else if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::SignedInt)
{
const qint8 value = static_cast<qint8>(x * 127);
*reinterpret_cast<quint8*>(ptr) = value;
}
else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::UnSignedInt)
{
quint16 value = static_cast<quint16>((1.0 + x) / 2 * 65535);
if (format.byteOrder() == QAudioFormat::LittleEndian)
qToLittleEndian<quint16>(value, ptr);
else
qToBigEndian<quint16>(value, ptr);
}
else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::SignedInt)
{
qint16 value = static_cast<qint16>(x * 32767);
if (format.byteOrder() == QAudioFormat::LittleEndian)
qToLittleEndian<qint16>(value, ptr);
else
qToBigEndian<qint16>(value, ptr);
}
ptr += channelBytes;//кол-во каналов
length -= channelBytes;
}
++sampleIndex;
}
}
void tst_QAudioFormat::checkSampleType()
{
QAudioFormat audioFormat;
audioFormat.setSampleType(QAudioFormat::SignedInt);
QVERIFY(audioFormat.sampleType() == QAudioFormat::SignedInt);
audioFormat.setSampleType(QAudioFormat::Unknown);
QVERIFY(audioFormat.sampleType() == QAudioFormat::Unknown);
audioFormat.setSampleType(QAudioFormat::Float);
QVERIFY(audioFormat.sampleType() == QAudioFormat::Float);
}
QString formatToString(const QAudioFormat &format)
{
QString result;
if (QAudioFormat() != format) {
if (format.codec() == "audio/pcm") {
Q_ASSERT(format.sampleType() == QAudioFormat::SignedInt);
const QString formatEndian = (format.byteOrder() == QAudioFormat::LittleEndian)
? QString("LE") : QString("BE");
QString formatType;
switch (format.sampleType()) {
case QAudioFormat::SignedInt:
formatType = "signed";
break;
case QAudioFormat::UnSignedInt:
formatType = "unsigned";
break;
case QAudioFormat::Float:
formatType = "float";
break;
case QAudioFormat::Unknown:
formatType = "unknown";
break;
}
QString formatChannels = QString("%1 channels").arg(format.channelCount());
switch (format.channelCount()) {
case 1:
formatChannels = "mono";
break;
case 2:
formatChannels = "stereo";
break;
}
result = QString("%1 Hz %2 bit %3 %4 %5")
.arg(format.sampleRate())
.arg(format.sampleSize())
.arg(formatType)
.arg(formatEndian)
.arg(formatChannels);
} else {
result = format.codec();
}
}
return result;
}
bool WaveFileWriter::writeHeader(const QAudioFormat &format)
{
// check if format is supported
if (format.byteOrder() == QAudioFormat::BigEndian || format.sampleType() != QAudioFormat::SignedInt)
return false;
CombinedHeader header;
memset(&header, 0, HeaderLength);
#ifndef Q_LITTLE_ENDIAN
// only implemented for LITTLE ENDIAN
return false;
#else
// RIFF header
memcpy(header.riff.descriptor.id, "RIFF", 4);
header.riff.descriptor.size = 0; // this will be updated with correct duration:
// m_dataLength + HeaderLength - 8
// WAVE header
memcpy(header.riff.type, "WAVE", 4);
memcpy(header.wave.descriptor.id, "fmt ", 4);
header.wave.descriptor.size = quint32(16);
header.wave.audioFormat = quint16(1);
header.wave.numChannels = quint16(format.channelCount());
header.wave.sampleRate = quint32(format.sampleRate());
header.wave.byteRate = quint32(format.sampleRate() * format.channelCount() * format.sampleSize() / 8);
header.wave.blockAlign = quint16(format.channelCount() * format.sampleSize() / 8);
header.wave.bitsPerSample = quint16(format.sampleSize());
// DATA header
memcpy(header.data.descriptor.id,"data", 4);
header.data.descriptor.size = 0; // this will be updated with correct data length: m_dataLength
return (file.write(reinterpret_cast<const char *>(&header), HeaderLength) == HeaderLength);
#endif
}
QMemoryAudioBufferProvider(const void *data, int frameCount, const QAudioFormat &format, qint64 startTime)
: mStartTime(startTime)
, mFrameCount(frameCount)
, mFormat(format)
{
int numBytes = format.bytesForFrames(frameCount);
if (numBytes > 0) {
mBuffer = malloc(numBytes);
if (!mBuffer) {
// OOM, if that's likely
mStartTime = -1;
mFrameCount = 0;
mFormat = QAudioFormat();
} else {
// Allocated, see if we have data to copy
if (data) {
memcpy(mBuffer, data, numBytes);
} else {
// We have to fill with the zero value..
switch (format.sampleType()) {
case QAudioFormat::SignedInt:
// Signed int means 0x80, 0x8000 is zero
// XXX this is not right for > 8 bits(0x8080 vs 0x8000)
memset(mBuffer, 0x80, numBytes);
break;
default:
memset(mBuffer, 0x0, numBytes);
}
}
}
} else
mBuffer = 0;
}
bool WaveFileWriter::open(const QString& fileName, const QAudioFormat& format)
{
if (file.isOpen())
return false; // file already open
if (format.codec() != "audio/pcm" || format.sampleType() != QAudioFormat::SignedInt)
return false; // data format is not supported
if (fileName == "stdout")
{
if (!file.open(stdout, QIODevice::WriteOnly))
return false;
}
else
{
file.setFileName(fileName);
if (!file.open(QIODevice::WriteOnly))
return false; // unable to open file for writing
}
if (!writeHeader(format))
return false;
m_format = format;
return true;
}
void Generator::generateData(const QAudioFormat &format, qint64 durationUs, int sampleRate)
{
const int channelBytes = format.sampleSize() / 8;
qint64 length = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8))
* durationUs / 1000000;
m_buffer.resize(length);
unsigned char *ptr = reinterpret_cast<unsigned char *>(m_buffer.data());
int sampleIndex = 0;
PHDBG() << "Type :" << format.sampleType() << " Size : " << format.sampleSize() << " Channel Count : " << format.channelCount();
while (length) {
const qreal x = qSin(2 * M_PI * sampleRate * qreal(sampleIndex % format.sampleRate()) / format.sampleRate());
for (int i = 0; i < format.channelCount(); ++i) {
qint16 value = static_cast<qint16>(x * 32767);
qToLittleEndian<qint16>(value, ptr);
ptr += channelBytes;
length -= channelBytes;
}
++sampleIndex;
}
}
AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat)
{
AudioStreamBasicDescription sf;
sf.mFormatFlags = kAudioFormatFlagIsPacked;
sf.mSampleRate = audioFormat.frequency();
sf.mFramesPerPacket = 1;
sf.mChannelsPerFrame = audioFormat.channels();
sf.mBitsPerChannel = audioFormat.sampleSize();
sf.mBytesPerFrame = sf.mChannelsPerFrame * (sf.mBitsPerChannel / 8);
sf.mBytesPerPacket = sf.mFramesPerPacket * sf.mBytesPerFrame;
sf.mFormatID = kAudioFormatLinearPCM;
switch (audioFormat.sampleType()) {
case QAudioFormat::SignedInt: sf.mFormatFlags |= kAudioFormatFlagIsSignedInteger; break;
case QAudioFormat::UnSignedInt: /* default */ break;
case QAudioFormat::Float: sf.mFormatFlags |= kAudioFormatFlagIsFloat; break;
case QAudioFormat::Unknown: default: break;
}
if (audioFormat.byteOrder() == QAudioFormat::BigEndian)
sf.mFormatFlags |= kAudioFormatFlagIsBigEndian;
return sf;
}
bool isPCMS16LE(const QAudioFormat &format)
{
return isPCM(format) &&
format.sampleType() == QAudioFormat::SignedInt &&
format.sampleSize() == 16 &&
format.byteOrder() == QAudioFormat::LittleEndian;
}
bool formatQtToNative(const QAudioFormat &inputFormat,
TUint32 &outputFourCC,
TMMFCapabilities &outputFormat) {
bool result = false;
// Need to use temporary variables because TMMFCapabilities fields are all
// TInt, rather than MMF enumerated types.
TMMFSampleRate outputSampleRate;
TMMFMonoStereo outputChannels;
TMMFSoundEncoding outputEncoding;
if (inputFormat.codec() == "audio/pcm") {
result =
sampleRateQtToNative(inputFormat.frequency(), outputSampleRate)
&& channelsQtToNative(inputFormat.channels(), outputChannels)
&& sampleInfoQtToNative(inputFormat.sampleSize(),
inputFormat.byteOrder(),
inputFormat.sampleType(),
outputFourCC,
outputEncoding);
}
if (result) {
outputFormat.iRate = outputSampleRate;
outputFormat.iChannels = outputChannels;
outputFormat.iEncoding = outputEncoding;
}
return result;
}
/*!
Returns the closest QAudioFormat to the supplied \a settings that the system supports.
These settings are provided by the platform/audio plugin being used.
They are also dependent on the \l {QAudio}::Mode being used.
*/
QAudioFormat QAudioDeviceInfo::nearestFormat(const QAudioFormat &settings) const
{
if (isFormatSupported(settings))
return settings;
QAudioFormat nearest = settings;
QList<QString> testCodecs = supportedCodecs();
QList<int> testChannels = supportedChannelCounts();
QList<QAudioFormat::Endian> testByteOrders = supportedByteOrders();
QList<QAudioFormat::SampleType> testSampleTypes;
QList<QAudioFormat::SampleType> sampleTypesAvailable = supportedSampleTypes();
QMap<int,int> testSampleRates;
QList<int> sampleRatesAvailable = supportedSampleRates();
QMap<int,int> testSampleSizes;
QList<int> sampleSizesAvailable = supportedSampleSizes();
// Get sorted lists for checking
if (testCodecs.contains(settings.codec())) {
testCodecs.removeAll(settings.codec());
testCodecs.insert(0, settings.codec());
}
testChannels.removeAll(settings.channelCount());
testChannels.insert(0, settings.channelCount());
testByteOrders.removeAll(settings.byteOrder());
testByteOrders.insert(0, settings.byteOrder());
if (sampleTypesAvailable.contains(settings.sampleType()))
testSampleTypes.append(settings.sampleType());
if (sampleTypesAvailable.contains(QAudioFormat::SignedInt))
testSampleTypes.append(QAudioFormat::SignedInt);
if (sampleTypesAvailable.contains(QAudioFormat::UnSignedInt))
testSampleTypes.append(QAudioFormat::UnSignedInt);
if (sampleTypesAvailable.contains(QAudioFormat::Float))
testSampleTypes.append(QAudioFormat::Float);
if (sampleSizesAvailable.contains(settings.sampleSize()))
testSampleSizes.insert(0,settings.sampleSize());
sampleSizesAvailable.removeAll(settings.sampleSize());
foreach (int size, sampleSizesAvailable) {
int larger = (size > settings.sampleSize()) ? size : settings.sampleSize();
int smaller = (size > settings.sampleSize()) ? settings.sampleSize() : size;
bool isMultiple = ( 0 == (larger % smaller));
int diff = larger - smaller;
testSampleSizes.insert((isMultiple ? diff : diff+100000), size);
}
void qMultiplySamples(qreal factor, const QAudioFormat &format, const void* src, void* dest, int len)
{
int samplesCount = len / (format.sampleSize()/8);
switch ( format.sampleSize() ) {
case 8:
if (format.sampleType() == QAudioFormat::SignedInt)
QAudioHelperInternal::adjustSamples<qint8>(factor,src,dest,samplesCount);
else if (format.sampleType() == QAudioFormat::UnSignedInt)
QAudioHelperInternal::adjustUnsignedSamples<quint8>(factor,src,dest,samplesCount);
break;
case 16:
if (format.sampleType() == QAudioFormat::SignedInt)
QAudioHelperInternal::adjustSamples<qint16>(factor,src,dest,samplesCount);
else if (format.sampleType() == QAudioFormat::UnSignedInt)
QAudioHelperInternal::adjustUnsignedSamples<quint16>(factor,src,dest,samplesCount);
break;
default:
if (format.sampleType() == QAudioFormat::SignedInt)
QAudioHelperInternal::adjustSamples<qint32>(factor,src,dest,samplesCount);
else if (format.sampleType() == QAudioFormat::UnSignedInt)
QAudioHelperInternal::adjustUnsignedSamples<quint32>(factor,src,dest,samplesCount);
else if (format.sampleType() == QAudioFormat::Float)
QAudioHelperInternal::adjustSamples<float>(factor,src,dest,samplesCount);
}
}
void Generator::generateData(const QAudioFormat& format, unsigned char* ptr, qint64 length)
{
const int channelBytes = format.sampleSize() / 8;
if (length <= 0)
return;
QMutexLocker lock(m_mutex);
QVector<qreal> channels;
channels.resize(2);
// LOG_INFO() << "generating Sounds" << QDateTime::currentDateTime() << length;
initializeSounds();
while (length) {
generateTone(channels[0], channels[1], m_sampleIndex);
//const qreal x = soundFunc(2 * M_PI * frequency * qreal(sampleIndex ) / format.sampleRate());
for (int i=0; i<format.channelCount(); ++i) {
if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::UnSignedInt) {
const quint8 value = static_cast<quint8>((1.0 + channels[i]) / 2 * 255);
*reinterpret_cast<quint8*>(ptr) = value;
} else if (format.sampleSize() == 8 && format.sampleType() == QAudioFormat::SignedInt) {
const qint8 value = static_cast<qint8>(channels[i] * 127);
*reinterpret_cast<quint8*>(ptr) = value;
} else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::UnSignedInt) {
quint16 value = static_cast<quint16>((1.0 + channels[i]) / 2 * 65535);
if (format.byteOrder() == QAudioFormat::LittleEndian)
qToLittleEndian<quint16>(value, ptr);
else
qToBigEndian<quint16>(value, ptr);
} else if (format.sampleSize() == 16 && format.sampleType() == QAudioFormat::SignedInt) {
qint16 value = static_cast<qint16>(channels[i] * 32767);
if (format.byteOrder() == QAudioFormat::LittleEndian)
qToLittleEndian<qint16>(value, ptr);
else
qToBigEndian<qint16>(value, ptr);
}
ptr += channelBytes;
length -= channelBytes;
}
++m_sampleIndex;
}
}
void TSoundOutputDeviceImp::play(const TSoundTrackP &st, TINT32 s0, TINT32 s1,
bool loop, bool scrubbing) {
if (!doSetStreamFormat(st->getFormat())) return;
MyData *myData = new MyData();
myData->imp = shared_from_this();
myData->totalPacketCount = s1 - s0;
myData->fileByteCount = (s1 - s0) * st->getSampleSize();
myData->entireFileBuffer = new char[myData->fileByteCount];
memcpy(myData->entireFileBuffer, st->getRawData() + s0 * st->getSampleSize(),
myData->fileByteCount);
m_isPlaying = true;
myData->isLooping = loop;
QAudioFormat format;
QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
format.setSampleSize(st->getBitPerSample());
format.setCodec("audio/pcm");
format.setChannelCount(st->getChannelCount());
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(st->getFormat().m_signedSample
? QAudioFormat::SignedInt
: QAudioFormat::UnSignedInt);
format.setSampleRate(st->getSampleRate());
QList<QAudioFormat::Endian> sbos = info.supportedByteOrders();
QList<int> sccs = info.supportedChannelCounts();
QList<int> ssrs = info.supportedSampleRates();
QList<QAudioFormat::SampleType> sstypes = info.supportedSampleTypes();
QList<int> ssss = info.supportedSampleSizes();
QStringList supCodes = info.supportedCodecs();
if (!info.isFormatSupported((format))) {
format = info.nearestFormat(format);
int newChannels = format.channelCount();
int newBitsPerSample = format.sampleSize();
int newSampleRate = format.sampleRate();
QAudioFormat::SampleType newSampleType = format.sampleType();
QAudioFormat::Endian newBo = format.byteOrder();
}
int test = st->getSampleCount() / st->getSampleRate();
QByteArray *data =
new QByteArray(myData->entireFileBuffer, myData->fileByteCount);
QBuffer *newBuffer = new QBuffer;
newBuffer->setBuffer(data);
newBuffer->open(QIODevice::ReadOnly);
newBuffer->seek(0);
if (m_audioOutput == NULL) {
m_audioOutput = new QAudioOutput(format, NULL);
}
m_audioOutput->start(newBuffer);
m_audioOutput->setVolume(m_volume);
}
QDebug operator<<(QDebug dbg, const QAudioFormat &f)
{
dbg.nospace() << "QAudioFormat(" << f.sampleRate();
dbg.nospace() << "Hz, " << f.sampleSize();
dbg.nospace() << "bit, channelCount=" << f.channelCount();
dbg.nospace() << ", sampleType=" << f.sampleType();
dbg.nospace() << ", byteOrder=" << f.byteOrder();
dbg.nospace() << ", codec=" << f.codec();
dbg.nospace() << ")";
return dbg.space();
}
void tst_QAudioFormat::checkSampleType()
{
QAudioFormat audioFormat;
audioFormat.setSampleType(QAudioFormat::SignedInt);
QVERIFY(audioFormat.sampleType() == QAudioFormat::SignedInt);
QTest::ignoreMessage(QtDebugMsg, "SignedInt");
qDebug() << QAudioFormat::SignedInt;
audioFormat.setSampleType(QAudioFormat::Unknown);
QVERIFY(audioFormat.sampleType() == QAudioFormat::Unknown);
QTest::ignoreMessage(QtDebugMsg, "Unknown");
qDebug() << QAudioFormat::Unknown;
audioFormat.setSampleType(QAudioFormat::UnSignedInt);
QVERIFY(audioFormat.sampleType() == QAudioFormat::UnSignedInt);
QTest::ignoreMessage(QtDebugMsg, "UnSignedInt");
qDebug() << QAudioFormat::UnSignedInt;
audioFormat.setSampleType(QAudioFormat::Float);
QVERIFY(audioFormat.sampleType() == QAudioFormat::Float);
QTest::ignoreMessage(QtDebugMsg, "Float");
qDebug() << QAudioFormat::Float;
}
bool QAudioDeviceInfoInternal::isFormatSupported(
const QAudioFormat &format) const
{
getSupportedFormats();
const bool supported =
m_codecs.contains(format.codec())
&& m_frequencies.contains(format.frequency())
&& m_channels.contains(format.channels())
&& m_sampleSizes.contains(format.sampleSize())
&& m_byteOrders.contains(format.byteOrder())
&& m_sampleTypes.contains(format.sampleType());
return supported;
}
QT_BEGIN_NAMESPACE
// Debugging
QDebug operator<<(QDebug dbg, const QAudioFormat& audioFormat)
{
dbg.nospace() << "QAudioFormat(" <<
audioFormat.frequency() << "," <<
audioFormat.channels() << "," <<
audioFormat.sampleSize()<< "," <<
audioFormat.codec() << "," <<
audioFormat.byteOrder() << "," <<
audioFormat.sampleType() << ")";
return dbg.space();
}
bool QAudioDeviceInfoInternal::isFormatSupported(
const QAudioFormat &format) const
{
getSupportedFormats();
bool supported = false;
if (m_capabilities.contains(format.codec())) {
const Capabilities &codecCaps = m_capabilities[format.codec()];
supported = codecCaps.m_frequencies.contains(format.frequency())
&& codecCaps.m_channels.contains(format.channels())
&& codecCaps.m_sampleSizes.contains(format.sampleSize())
&& codecCaps.m_byteOrders.contains(format.byteOrder())
&& codecCaps.m_sampleTypes.contains(format.sampleType());
}
return supported;
}
void AudioTest::test()
{
// tries to set all the settings picked.
logOutput->clear();
logOutput->append("NOTE: an invalid codec audio/test exists for testing, to get a fail condition.");
if (!deviceInfo.isNull()) {
if (deviceInfo.isFormatSupported(settings)) {
logOutput->append(tr("Success"));
nearestFreq->setText("");
nearestChannel->setText("");
nearestCodec->setText("");
nearestSampleSize->setText("");
nearestSampleType->setText("");
nearestEndian->setText("");
} else {
QAudioFormat nearest = deviceInfo.nearestFormat(settings);
logOutput->append(tr("Failed"));
nearestFreq->setText(QString("%1").arg(nearest.frequency()));
nearestChannel->setText(QString("%1").arg(nearest.channels()));
nearestCodec->setText(nearest.codec());
nearestSampleSize->setText(QString("%1").arg(nearest.sampleSize()));
switch(nearest.sampleType()) {
case QAudioFormat::SignedInt:
nearestSampleType->setText("SignedInt");
break;
case QAudioFormat::UnSignedInt:
nearestSampleType->setText("UnSignedInt");
break;
case QAudioFormat::Float:
nearestSampleType->setText("Float");
break;
case QAudioFormat::Unknown:
nearestSampleType->setText("Unknown");
}
switch(nearest.byteOrder()) {
case QAudioFormat::LittleEndian:
nearestEndian->setText("LittleEndian");
break;
case QAudioFormat::BigEndian:
nearestEndian->setText("BigEndian");
}
}
}
else
logOutput->append(tr("No Device"));
}
// This function returns the maximum possible sample value for a given audio format
qreal getPeakValue(const QAudioFormat& format)
{
// Note: Only the most common sample formats are supported
if (!format.isValid())
return qreal(0);
if (format.codec() != "audio/pcm")
return qreal(0);
switch (format.sampleType()) {
case QAudioFormat::Unknown:
break;
case QAudioFormat::Float:
if (format.sampleSize() != 32) // other sample formats are not supported
return qreal(0);
return qreal(1.00003);
case QAudioFormat::SignedInt:
if (format.sampleSize() == 32)
return qreal(INT_MAX);
if (format.sampleSize() == 16)
return qreal(SHRT_MAX);
if (format.sampleSize() == 8)
return qreal(CHAR_MAX);
break;
case QAudioFormat::UnSignedInt:
if (format.sampleSize() == 32)
return qreal(UINT_MAX);
if (format.sampleSize() == 16)
return qreal(USHRT_MAX);
if (format.sampleSize() == 8)
return qreal(UCHAR_MAX);
break;
}
return qreal(0);
}
void QOggSimplePlayer::open()
{
QMutexLocker mutexLocker(&mutex);
if(!QFile(filePath).exists())
return;
QAudioFormat format;
format.setSampleRate(48000);
format.setChannelCount(1);
format.setSampleSize(16);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
int returnCode=ov_fopen(QDir::toNativeSeparators(filePath).toLocal8Bit().data(), &vf);
if(returnCode < 0)
{
qDebug() << "Input does not appear to be an Ogg bitstream for " << QDir::toNativeSeparators(filePath) << ", return code: " << returnCode;
ov_clear(&vf);
return;
}
{
char **ptr=ov_comment(&vf,-1)->user_comments;
vorbis_info *vi=ov_info(&vf,-1);
while(*ptr){
fprintf(stderr,"%s\n",*ptr);
++ptr;
}
qDebug() << QString("Bitstream is %1 channel, %2Hz").arg(vi->channels).arg(vi->rate);
qDebug() << QString("Encoded by: %1").arg(ov_comment(&vf,-1)->vendor);
qDebug() << QString("Play on: %1").arg(QAudioDeviceInfo::defaultOutputDevice().deviceName());
format.setChannelCount(vi->channels);
format.setSampleRate(vi->rate);
}
if(format.channelCount()!=1)
{
qDebug() << "Only mono sound is supported due to a bug";
ov_clear(&vf);
return;
}
QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice());
if (!info.isFormatSupported(format)) {
qDebug() << QString("raw audio format not supported by backend, cannot play audio: SampleRate: %1, ChannelCount: %2, SampleSize: %3, Codec: %4, ByteOrder: %5, SampleType: %6")
.arg(format.sampleRate())
.arg(format.channelCount())
.arg(format.sampleSize())
.arg(format.codec())
.arg(format.byteOrder())
.arg(format.sampleType())
;
QAudioFormat preferedFormat=info.preferredFormat();
qDebug() << QString("prefered format: SampleRate: %1, ChannelCount: %2, SampleSize: %3, Codec: %4, ByteOrder: %5, SampleType: %6")
.arg(preferedFormat.sampleRate())
.arg(preferedFormat.channelCount())
.arg(preferedFormat.sampleSize())
.arg(preferedFormat.codec())
.arg(preferedFormat.byteOrder())
.arg(preferedFormat.sampleType())
;
QAudioFormat nearestFormat=info.nearestFormat(format);
qDebug() << QString("nearest format: SampleRate: %1, ChannelCount: %2, SampleSize: %3, Codec: %4, ByteOrder: %5, SampleType: %6")
.arg(nearestFormat.sampleRate())
.arg(nearestFormat.channelCount())
.arg(nearestFormat.sampleSize())
.arg(nearestFormat.codec())
.arg(nearestFormat.byteOrder())
.arg(nearestFormat.sampleType())
;
ov_clear(&vf);
return;
}
if(output!=NULL)
delete output;
output = new QAudioOutput(format);
output->setVolume(volume);
output->setBufferSize(4096);
connect(output,&QAudioOutput::stateChanged,this,&QOggSimplePlayer::finishedPlaying,Qt::QueuedConnection);
if(needPlay)
start();
}
bool QAudioDeviceInfoInternal::testSettings(const QAudioFormat& format) const
{
// Set nearest to closest settings that do work.
// See if what is in settings will work (return value).
int err = 0;
snd_pcm_t* handle;
snd_pcm_hw_params_t *params;
QString dev = device;
QList<QByteArray> devices = QAudioDeviceInfoInternal::availableDevices(QAudio::AudioOutput);
if(dev.compare(QLatin1String("default")) == 0) {
#if(SND_LIB_MAJOR == 1 && SND_LIB_MINOR == 0 && SND_LIB_SUBMINOR >= 14)
dev = QLatin1String(devices.first().constData());
#else
dev = QLatin1String("hw:0,0");
#endif
} else {
#if(SND_LIB_MAJOR == 1 && SND_LIB_MINOR == 0 && SND_LIB_SUBMINOR >= 14)
dev = device;
#else
int idx = 0;
char *name;
QString shortName = device.mid(device.indexOf(QLatin1String("="),0)+1);
while(snd_card_get_name(idx,&name) == 0) {
if(shortName.compare(QLatin1String(name)) == 0)
break;
idx++;
}
dev = QString(QLatin1String("hw:%1,0")).arg(idx);
#endif
}
if(mode == QAudio::AudioOutput) {
err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
} else {
err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_CAPTURE,0);
}
if(err < 0) {
handle = 0;
return false;
}
bool testChannel = false;
bool testCodec = false;
bool testFreq = false;
bool testType = false;
bool testSize = false;
int dir = 0;
snd_pcm_nonblock( handle, 0 );
snd_pcm_hw_params_alloca( ¶ms );
snd_pcm_hw_params_any( handle, params );
// set the values!
snd_pcm_hw_params_set_channels(handle,params,format.channels());
snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
err = -1;
switch(format.sampleSize()) {
case 8:
if(format.sampleType() == QAudioFormat::SignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
else if(format.sampleType() == QAudioFormat::UnSignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
break;
case 16:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
}
break;
case 32:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
}
}
// For now, just accept only audio/pcm codec
if(!format.codec().startsWith(QLatin1String("audio/pcm"))) {
err=-1;
} else
testCodec = true;
if(err>=0 && format.channels() != -1) {
err = snd_pcm_hw_params_test_channels(handle,params,format.channels());
if(err>=0)
err = snd_pcm_hw_params_set_channels(handle,params,format.channels());
if(err>=0)
testChannel = true;
}
if(err>=0 && format.frequency() != -1) {
err = snd_pcm_hw_params_test_rate(handle,params,format.frequency(),0);
if(err>=0)
err = snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
if(err>=0)
testFreq = true;
}
if((err>=0 && format.sampleSize() != -1) &&
(format.sampleType() != QAudioFormat::Unknown)) {
switch(format.sampleSize()) {
case 8:
if(format.sampleType() == QAudioFormat::SignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
else if(format.sampleType() == QAudioFormat::UnSignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
break;
case 16:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
}
break;
case 32:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
}
}
if(err>=0) {
testSize = true;
testType = true;
}
}
if(err>=0)
err = snd_pcm_hw_params(handle, params);
if(err == 0) {
// settings work
// close()
if(handle)
snd_pcm_close(handle);
return true;
}
if(handle)
snd_pcm_close(handle);
return false;
}
bool QAudioDeviceInfoInternal::testSettings(const QAudioFormat& format) const
{
// Set nearest to closest settings that do work.
// See if what is in settings will work (return value).
bool failed = false;
bool match = false;
// check codec
for( int i = 0; i < codecz.count(); i++) {
if (format.codec() == codecz.at(i))
match = true;
}
if (!match) failed = true;
// check channel
match = false;
if (!failed) {
for( int i = 0; i < channelz.count(); i++) {
if (format.channels() == channelz.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check frequency
match = false;
if (!failed) {
for( int i = 0; i < freqz.count(); i++) {
if (format.frequency() == freqz.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check sample size
match = false;
if (!failed) {
for( int i = 0; i < sizez.count(); i++) {
if (format.sampleSize() == sizez.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check byte order
match = false;
if (!failed) {
for( int i = 0; i < byteOrderz.count(); i++) {
if (format.byteOrder() == byteOrderz.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check sample type
match = false;
if (!failed) {
for( int i = 0; i < typez.count(); i++) {
if (format.sampleType() == typez.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
if(!failed) {
// settings work
return true;
}
return false;
}
bool QAudioDeviceInfoInternal::testSettings(const QAudioFormat& format) const
{
// Set nearest to closest settings that do work.
// See if what is in settings will work (return value).
int err = 0;
snd_pcm_t* handle;
snd_pcm_hw_params_t *params;
QString dev = device;
// open()
if(!dev.contains(QLatin1String("default"))) {
int idx = snd_card_get_index(dev.toLocal8Bit().constData());
dev = QString(QLatin1String("hw:%1,0")).arg(idx);
}
if(mode == QAudio::AudioOutput) {
err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
} else {
err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_CAPTURE,0);
}
if(err < 0) {
handle = 0;
return false;
}
bool testChannel = false;
bool testCodec = false;
bool testFreq = false;
bool testType = false;
bool testSize = false;
int dir = 0;
snd_pcm_nonblock( handle, 0 );
snd_pcm_hw_params_alloca( ¶ms );
snd_pcm_hw_params_any( handle, params );
// set the values!
snd_pcm_hw_params_set_channels(handle,params,format.channels());
snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
switch(format.sampleSize()) {
case 8:
if(format.sampleType() == QAudioFormat::SignedInt)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
else if(format.sampleType() == QAudioFormat::UnSignedInt)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
break;
case 16:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
}
break;
case 32:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
}
}
// For now, just accept only audio/pcm codec
if(!format.codec().startsWith(QLatin1String("audio/pcm"))) {
err=-1;
} else
testCodec = true;
if(err>=0 && format.channels() != -1) {
err = snd_pcm_hw_params_test_channels(handle,params,format.channels());
if(err>=0)
err = snd_pcm_hw_params_set_channels(handle,params,format.channels());
if(err>=0)
testChannel = true;
}
if(err>=0 && format.frequency() != -1) {
err = snd_pcm_hw_params_test_rate(handle,params,format.frequency(),0);
if(err>=0)
err = snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
if(err>=0)
testFreq = true;
}
if((err>=0 && format.sampleSize() != -1) &&
(format.sampleType() != QAudioFormat::Unknown)) {
switch(format.sampleSize()) {
case 8:
if(format.sampleType() == QAudioFormat::SignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
else if(format.sampleType() == QAudioFormat::UnSignedInt)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
break;
case 16:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
}
break;
case 32:
if(format.sampleType() == QAudioFormat::SignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
} else if(format.sampleType() == QAudioFormat::UnSignedInt) {
if(format.byteOrder() == QAudioFormat::LittleEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
else if(format.byteOrder() == QAudioFormat::BigEndian)
err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
}
}
if(err>=0) {
testSize = true;
testType = true;
}
}
if(err>=0)
err = snd_pcm_hw_params(handle, params);
if(err == 0) {
// settings work
// close()
if(handle)
snd_pcm_close(handle);
return true;
}
if(handle)
snd_pcm_close(handle);
return false;
}
void MainWindow::adjustSettings()
{
QAudioFormat inputFormat = m_audio_lib->inputAudioFormat();
QAudioFormat format = m_audio_lib->audioFormat();
QString str;
str.append("Input format:\n\n");
str.append(QString("Sample size: %0 bits\n").arg(inputFormat.sampleSize()));
str.append(QString("Sample rate: %0 hz\n").arg(inputFormat.sampleRate()));
str.append(QString("Channels: %0\n").arg(inputFormat.channelCount()));
str.append(QString("Sample type: %0\n").arg((inputFormat.sampleType() == QAudioFormat::Float) ? "Float" : "Integer"));
str.append(QString("Byte order: %0\n").arg((inputFormat.byteOrder() == QAudioFormat::LittleEndian) ? "Little endian" : "Big endian"));
str.append("\n");
str.append("Resampled format:\n\n");
str.append(QString("Sample size: %0 bits\n").arg(format.sampleSize()));
str.append(QString("Sample rate: %0 hz\n").arg(format.sampleRate()));
str.append(QString("Channels: %0\n").arg(format.channelCount()));
str.append(QString("Sample type: %0\n").arg((format.sampleType() == QAudioFormat::Float) ? "Float" : "Integer"));
str.append(QString("Byte order: %0").arg((format.byteOrder() == QAudioFormat::LittleEndian) ? "Little endian" : "Big endian"));
str.append("\n\n");
str.append("Eigen instructions set:\n");
str.append(AudioStreamingLibCore::EigenInstructionsSet());
texteditsettings->setPlainText(str);
if (!m_spectrum_analyzer)
{
m_spectrum_analyzer = new SpectrumAnalyzer();
QThread *thread = new QThread();
m_spectrum_analyzer->moveToThread(thread);
connect(m_audio_lib, &AudioStreamingLibCore::veryInputData, m_spectrum_analyzer, &SpectrumAnalyzer::calculateSpectrum);
connect(m_spectrum_analyzer, &SpectrumAnalyzer::spectrumChanged, bars, &BarsWidget::setValues);
connect(m_spectrum_analyzer, &SpectrumAnalyzer::destroyed, bars, &BarsWidget::clear);
connect(m_audio_lib, &AudioStreamingLibCore::finished, m_spectrum_analyzer, &SpectrumAnalyzer::deleteLater);
connect(this, &MainWindow::destroyed, m_spectrum_analyzer, &SpectrumAnalyzer::deleteLater);
connect(m_spectrum_analyzer, &SpectrumAnalyzer::destroyed, thread, &QThread::quit);
connect(thread, &QThread::finished, thread, &QThread::deleteLater);
QMetaObject::invokeMethod(m_spectrum_analyzer, "start", Qt::QueuedConnection, Q_ARG(QAudioFormat, format));
thread->start();
}
{
waveform->start(format);
connect(m_audio_lib, &AudioStreamingLibCore::veryInputData, waveform, &WaveFormWidget::calculateWaveForm);
connect(m_audio_lib, &AudioStreamingLibCore::finished, waveform, &WaveFormWidget::clear);
}
{
connect(m_audio_lib, &AudioStreamingLibCore::veryInputData, level, &LevelWidget::calculateRMSLevel);
}
}
bool QAlsaAudioDeviceInfo::testSettings(const QAudioFormat& format) const
{
// Set nearest to closest settings that do work.
// See if what is in settings will work (return value).
int err = -1;
snd_pcm_t* pcmHandle;
snd_pcm_hw_params_t *params;
QString dev;
#if(SND_LIB_MAJOR == 1 && SND_LIB_MINOR == 0 && SND_LIB_SUBMINOR >= 14)
dev = device;
if (dev.compare(QLatin1String("default")) == 0) {
QList<QByteArray> devices = availableDevices(QAudio::AudioOutput);
if (!devices.isEmpty())
dev = QLatin1String(devices.first().constData());
}
#else
if (dev.compare(QLatin1String("default")) == 0) {
dev = QLatin1String("hw:0,0");
} else {
int idx = 0;
char *name;
QString shortName = device.mid(device.indexOf(QLatin1String("="),0)+1);
while(snd_card_get_name(idx,&name) == 0) {
if(shortName.compare(QLatin1String(name)) == 0)
break;
idx++;
}
dev = QString(QLatin1String("hw:%1,0")).arg(idx);
}
#endif
snd_pcm_stream_t stream = mode == QAudio::AudioOutput
? SND_PCM_STREAM_PLAYBACK : SND_PCM_STREAM_CAPTURE;
if (snd_pcm_open(&pcmHandle, dev.toLocal8Bit().constData(), stream, 0) < 0)
return false;
snd_pcm_nonblock(pcmHandle, 0);
snd_pcm_hw_params_alloca(¶ms);
snd_pcm_hw_params_any(pcmHandle, params);
// set the values!
snd_pcm_hw_params_set_channels(pcmHandle, params, format.channelCount());
snd_pcm_hw_params_set_rate(pcmHandle, params, format.sampleRate(), 0);
snd_pcm_format_t pcmFormat = SND_PCM_FORMAT_UNKNOWN;
switch (format.sampleSize()) {
case 8:
if (format.sampleType() == QAudioFormat::SignedInt)
pcmFormat = SND_PCM_FORMAT_S8;
else if (format.sampleType() == QAudioFormat::UnSignedInt)
pcmFormat = SND_PCM_FORMAT_U8;
break;
case 16:
if (format.sampleType() == QAudioFormat::SignedInt) {
pcmFormat = format.byteOrder() == QAudioFormat::LittleEndian
? SND_PCM_FORMAT_S16_LE : SND_PCM_FORMAT_S16_BE;
} else if (format.sampleType() == QAudioFormat::UnSignedInt) {
pcmFormat = format.byteOrder() == QAudioFormat::LittleEndian
? SND_PCM_FORMAT_U16_LE : SND_PCM_FORMAT_U16_BE;
}
break;
case 32:
if (format.sampleType() == QAudioFormat::SignedInt) {
pcmFormat = format.byteOrder() == QAudioFormat::LittleEndian
? SND_PCM_FORMAT_S32_LE : SND_PCM_FORMAT_S32_BE;
} else if (format.sampleType() == QAudioFormat::UnSignedInt) {
pcmFormat = format.byteOrder() == QAudioFormat::LittleEndian
? SND_PCM_FORMAT_U32_LE : SND_PCM_FORMAT_U32_BE;
} else if (format.sampleType() == QAudioFormat::Float) {
pcmFormat = format.byteOrder() == QAudioFormat::LittleEndian
? SND_PCM_FORMAT_FLOAT_LE : SND_PCM_FORMAT_FLOAT_BE;
}
}
if (pcmFormat != SND_PCM_FORMAT_UNKNOWN)
err = snd_pcm_hw_params_set_format(pcmHandle, params, pcmFormat);
// For now, just accept only audio/pcm codec
if (!format.codec().startsWith(QLatin1String("audio/pcm")))
err = -1;
if (err >= 0 && format.channelCount() != -1) {
err = snd_pcm_hw_params_test_channels(pcmHandle, params, format.channelCount());
if (err >= 0)
err = snd_pcm_hw_params_set_channels(pcmHandle, params, format.channelCount());
}
if (err >= 0 && format.sampleRate() != -1) {
err = snd_pcm_hw_params_test_rate(pcmHandle, params, format.sampleRate(), 0);
if (err >= 0)
err = snd_pcm_hw_params_set_rate(pcmHandle, params, format.sampleRate(), 0);
}
if (err >= 0 && pcmFormat != SND_PCM_FORMAT_UNKNOWN)
err = snd_pcm_hw_params_set_format(pcmHandle, params, pcmFormat);
if (err >= 0)
err = snd_pcm_hw_params(pcmHandle, params);
snd_pcm_close(pcmHandle);
return (err == 0);
}