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;
}
}
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
}
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);
}
}
qint64 audioLength(const QAudioFormat &format, qint64 microSeconds)
{
qint64 result = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8))
* microSeconds / 1000000;
result -= result % (format.channelCount() * format.sampleSize());
return result;
}
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;
// For now, just accept only audio/pcm codec
if(!format.codec().startsWith(QLatin1String("audio/pcm")))
failed = true;
if(!failed && !(format.channels() == 1 || format.channels() == 2))
failed = true;
if(!failed) {
if(!(format.frequency() == 8000 || format.frequency() == 11025 || format.frequency() == 22050 ||
format.frequency() == 44100 || format.frequency() == 48000 || format.frequency() == 96000))
failed = true;
}
if(!failed && !(format.sampleSize() == 8 || format.sampleSize() == 16))
failed = true;
if(!failed) {
// settings work
return true;
}
return false;
}
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;
}
void tst_QWaveDecoder::file()
{
QFETCH(QString, file);
QFETCH(tst_QWaveDecoder::Corruption, corruption);
QFETCH(int, channels);
QFETCH(int, samplesize);
QFETCH(int, samplerate);
QFETCH(QAudioFormat::Endian, byteorder);
QFile stream;
stream.setFileName(file);
stream.open(QIODevice::ReadOnly);
QVERIFY(stream.isOpen());
QWaveDecoder waveDecoder(&stream);
QSignalSpy validFormatSpy(&waveDecoder, SIGNAL(formatKnown()));
QSignalSpy parsingErrorSpy(&waveDecoder, SIGNAL(parsingError()));
if (corruption == NotAWav) {
QSKIP("Not all failures detected correctly yet");
QTRY_COMPARE(parsingErrorSpy.count(), 1);
QCOMPARE(validFormatSpy.count(), 0);
} else if (corruption == NoSampleData) {
QTRY_COMPARE(validFormatSpy.count(), 1);
QCOMPARE(parsingErrorSpy.count(), 0);
QVERIFY(waveDecoder.audioFormat().isValid());
QVERIFY(waveDecoder.size() == 0);
QVERIFY(waveDecoder.duration() == 0);
} else if (corruption == FormatDescriptor) {
QTRY_COMPARE(parsingErrorSpy.count(), 1);
QCOMPARE(validFormatSpy.count(), 0);
} else if (corruption == FormatString) {
QTRY_COMPARE(parsingErrorSpy.count(), 1);
QCOMPARE(validFormatSpy.count(), 0);
QVERIFY(!waveDecoder.audioFormat().isValid());
} else if (corruption == DataDescriptor) {
QTRY_COMPARE(parsingErrorSpy.count(), 1);
QCOMPARE(validFormatSpy.count(), 0);
QVERIFY(waveDecoder.size() == 0);
} else if (corruption == None) {
QTRY_COMPARE(validFormatSpy.count(), 1);
QCOMPARE(parsingErrorSpy.count(), 0);
QVERIFY(waveDecoder.audioFormat().isValid());
QVERIFY(waveDecoder.size() > 0);
QVERIFY(waveDecoder.duration() == 250);
QAudioFormat format = waveDecoder.audioFormat();
QVERIFY(format.isValid());
QVERIFY(format.channelCount() == channels);
QVERIFY(format.sampleSize() == samplesize);
QVERIFY(format.sampleRate() == samplerate);
if (format.sampleSize() != 8) {
QVERIFY(format.byteOrder() == byteorder);
}
}
stream.close();
}
// Returns position in bytes, given position in microSeconds.
qint64 audioLength(const QAudioFormat &format, qint64 microSeconds)
{
// format.sampleRate() is in Hz, format.sampleSize() in bits
qint64 result = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8))
* microSeconds / 1000000;
// Round off to start of the channel 0.
result -= result % (format.channelCount() * format.sampleSize());
return result;
}
void xmppClient::slotConnected()
{
QXmppCall *call = qobject_cast<QXmppCall*>(sender());
Q_ASSERT(call);
qDebug() << "Call connected";
QXmppRtpChannel *channel = call->audioChannel();
// prepare audio format
QAudioFormat format;
format.setFrequency(channel->payloadType().clockrate());
format.setChannels(channel->payloadType().channels());
format.setSampleSize(16);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
// the size in bytes of the audio buffers to/from sound devices
// 160 ms seems to be the minimum to work consistently on Linux/Mac/Windows
const int bufferSize = (format.frequency() * format.channels() * (format.sampleSize() / 8) * 160) / 1000;
// initialise audio output
QAudioOutput *audioOutput = new QAudioOutput(format, this);
audioOutput->setBufferSize(bufferSize);
audioOutput->start(channel);
// initialise audio input
QAudioInput *audioInput = new QAudioInput(format, this);
audioInput->setBufferSize(bufferSize);
audioInput->start(channel);
}
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;
}
void xmppClient::slotAudioModeChanged(QIODevice::OpenMode mode)
{
QXmppCall *call = qobject_cast<QXmppCall*>(sender());
Q_ASSERT(call);
QXmppRtpAudioChannel *channel = call->audioChannel();
// prepare audio format
QAudioFormat format;
format.setSampleRate(channel->payloadType().clockrate());
format.setChannelCount(channel->payloadType().channels());
format.setSampleSize(16);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
// the size in bytes of the audio buffers to/from sound devices
// 160 ms seems to be the minimum to work consistently on Linux/Mac/Windows
const int bufferSize = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8) * 160) / 1000;
if (mode & QIODevice::ReadOnly) {
// initialise audio output
QAudioOutput *audioOutput = new QAudioOutput(format, this);
audioOutput->setBufferSize(bufferSize);
audioOutput->start(channel);
}
if (mode & QIODevice::WriteOnly) {
// initialise audio input
QAudioInput *audioInput = new QAudioInput(format, this);
audioInput->setBufferSize(bufferSize);
audioInput->start(channel);
}
}
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;
}
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;
}
void Generator::generateData(const QAudioFormat &format, qint64 durationUs, int frequency)
{
const int channelBytes = format.sampleSize() / 8;
const int sampleBytes = format.channelCount() * channelBytes;
qint64 length = (format.sampleRate() * format.channelCount() * (format.sampleSize() / 8))
* durationUs / 100000;
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());
generateData(format, ptr, length);
}
void SpectrumAnalyser::calculate(const QByteArray &buffer,
const QAudioFormat &format, bool isSample,char phoneme)
{
// QThread::currentThread is marked 'for internal use only', but
// we're only using it for debug output here, so it's probably OK :)
SPECTRUMANALYSER_DEBUG << "SpectrumAnalyser::calculate"
<< QThread::currentThread()
<< "state" << m_state;
if (isReady()) {
Q_ASSERT(isPCMS16LE(format));
const int bytesPerSample = format.sampleSize() * format.channels() / 8;
#ifdef DUMP_SPECTRUMANALYSER
m_count++;
const QString pcmFileName = m_outputDir.filePath(QString("spectrum_%1.pcm").arg(m_count, 4, 10, QChar('0')));
QFile pcmFile(pcmFileName);
pcmFile.open(QIODevice::WriteOnly);
const int bufferLength = m_numSamples * bytesPerSample;
pcmFile.write(buffer, bufferLength);
m_textStream << "TimeDomain " << m_count << "\n";
const qint16* input = reinterpret_cast<const qint16*>(buffer);
for (int i=0; i<m_numSamples; ++i) {
m_textStream << i << "\t" << *input << "\n";
input += format.channels();
}
#endif
m_state = Busy;
// Invoke SpectrumAnalyserThread::calculateSpectrum using QMetaObject. If
// m_thread is in a different thread from the current thread, the
// calculation will be done in the child thread.
// Once the calculation is finished, a calculationChanged signal will be
// emitted by m_thread.
const bool b = QMetaObject::invokeMethod(m_thread, "calculateSpectrum",
Qt::AutoConnection,
Q_ARG(QByteArray, buffer),
Q_ARG(int, format.frequency()),
Q_ARG(int, bytesPerSample),
Q_ARG(bool,isSample),
Q_ARG(char,phoneme));
Q_ASSERT(b);
Q_UNUSED(b) // suppress warnings in release builds
#ifdef DUMP_SPECTRUMANALYSER
m_textStream << "FrequencySpectrum " << m_count << "\n";
FrequencySpectrum::const_iterator x = m_spectrum.begin();
for (int i=0; i<m_numSamples; ++i, ++x)
m_textStream << i << "\t"
<< x->frequency << "\t"
<< x->amplitude<< "\t"
<< x->phase << "\n";
#endif
}
}
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);
}
}
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;
}
}
bool QAudioDeviceInfoInternal::isFormatSupported(const QAudioFormat& format) const
{
QAudioDeviceInfoInternal *self = const_cast<QAudioDeviceInfoInternal*>(this);
return format.isValid()
&& format.codec() == QString::fromLatin1("audio/pcm")
&& self->supportedSampleRates().contains(format.sampleRate())
&& self->supportedChannelCounts().contains(format.channelCount())
&& self->supportedSampleSizes().contains(format.sampleSize());
}
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();
}
CircularBuffer::CircularBuffer(const QAudioFormat& format, qint64 samples, QObject* parent)
: QIODevice(parent),
m_format(format),
m_bytesPerSample((format.sampleSize() / 8) * format.channelCount())
{
m_readPtr = 0;
m_writePtr = 0;
m_bufferSize = 0;
m_bufferCapacity = samples;
m_buffer.resize(m_bufferCapacity);
m_buffer.fill(0);
open(QIODevice::ReadWrite);
}
void AudioFileWav::addHeader(const QAudioFormat& audioFormat) {
QDataStream stream(&_file);
stream.setByteOrder(QDataStream::LittleEndian);
// RIFF
stream.writeRawData("RIFF", 4);
stream << quint32(0);
stream.writeRawData("WAVE", 4);
// Format description PCM = 16
stream.writeRawData("fmt ", 4);
stream << quint32(16);
stream << quint16(1);
stream << quint16(audioFormat.channelCount());
stream << quint32(audioFormat.sampleRate());
stream << quint32(audioFormat.sampleRate() * audioFormat.channelCount() * audioFormat.sampleSize() / 8); // bytes per second
stream << quint16(audioFormat.channelCount() * audioFormat.sampleSize() / 8); // block align
stream << quint16(audioFormat.sampleSize()); // bits Per Sample
// Init data chunck
stream.writeRawData("data", 4);
stream << quint32(0);
}
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;
}
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 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;
}
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();
}
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"));
}
SLDataFormat_PCM QOpenSLESEngine::audioFormatToSLFormatPCM(const QAudioFormat &format)
{
SLDataFormat_PCM format_pcm;
format_pcm.formatType = SL_DATAFORMAT_PCM;
format_pcm.numChannels = format.channelCount();
format_pcm.samplesPerSec = format.sampleRate() * 1000;
format_pcm.bitsPerSample = format.sampleSize();
format_pcm.containerSize = format.sampleSize();
format_pcm.channelMask = (format.channelCount() == 1 ?
SL_SPEAKER_FRONT_CENTER :
SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT);
format_pcm.endianness = (format.byteOrder() == QAudioFormat::LittleEndian ?
SL_BYTEORDER_LITTLEENDIAN :
SL_BYTEORDER_BIGENDIAN);
return format_pcm;
}
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;
}
}