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C++ QAudioFormat::isValid方法代码示例

本文整理汇总了C++中QAudioFormat::isValid方法的典型用法代码示例。如果您正苦于以下问题：C++ QAudioFormat::isValid方法的具体用法？C++ QAudioFormat::isValid怎么用？C++ QAudioFormat::isValid使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QAudioFormat的用法示例。


在下文中一共展示了QAudioFormat::isValid方法的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: startTime

/*!
    Creates a new audio buffer with space for \a numFrames frames of
    the given \a format.  The individual samples will be initialized
    to the default for the format.

    \a startTime (in microseconds) indicates when this buffer
    starts in the stream.
    If this buffer is not part of a stream, set it to -1.
 */
QAudioBuffer::QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime)
{
    if (format.isValid())
        d = new QAudioBufferPrivate(new QMemoryAudioBufferProvider(0, numFrames, format, startTime));
    else
        d = 0;
}
开发者ID:MarianMMX，项目名称:MarianMMX，代码行数:16，代码来源:qaudiobuffer.cpp

示例2: file

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();
}
开发者ID:Elleo，项目名称:qtmultimedia，代码行数:58，代码来源:tst_qwavedecoder.cpp

示例3: QIODevice

Generator::Generator(const QAudioFormat &format, qint64 durationUs, int sampleRate, QObject *parent)
    :   QIODevice(parent)
    ,   m_pos(0) // 1) не знаю что эта за функция 
    ,   m_sampleRate(sampleRate) // 2) частота  дискретизации или сигнала? 
    ,   m_durationUs(durationUs) // 3) длительность в микросек
    ,   m_format(format) // сколько байт в одно одной дискрете
{
    if (format.isValid()) // метод,  который выполняет фактическую проверку допустимости
        generateData(format, m_durationUs, m_sampleRate);
}
开发者ID:Vasyaaa，项目名称:auFM，代码行数:10，代码来源:aafm.cpp

示例4: QIODevice

Generator::Generator(const QAudioFormat &format,
                     qint64 durationUs,
                     int sampleRate,
                     QObject *parent)
    :   QIODevice(parent)
    ,   m_pos(0)
{
    if (format.isValid())
        generateData(format, durationUs, sampleRate);
}
开发者ID:venkatarajasekhar，项目名称:Qt，代码行数:10，代码来源:audiooutput.cpp

示例5: bufferProbed

void MFAudioProbeControl::bufferProbed(const char *data, quint32 size, const QAudioFormat& format, qint64 startTime)
{
    if (!format.isValid())
        return;

    QAudioBuffer audioBuffer = QAudioBuffer(QByteArray(data, size), format, startTime);

    {
        QMutexLocker locker(&m_bufferMutex);
        m_pendingBuffer = audioBuffer;
        QMetaObject::invokeMethod(this, "bufferProbed", Qt::QueuedConnection);
    }
}
开发者ID:venkatarajasekhar，项目名称:Qt，代码行数:13，代码来源:mfaudioprobecontrol.cpp

示例6: QIODevice

Generator::Generator(const QAudioFormat &format,
                     qint64 durationUs,
                     int sampleRate,
                     QObject *parent)
    :   QIODevice(parent)
    ,   m_pos(0)
{
    if (format.isValid())
    {
        qDebug() << "generating" << durationUs << "at" << sampleRate;
        generateData(format, durationUs, sampleRate);
    }
}
开发者ID:kimmoli，项目名称:visseli，代码行数:13，代码来源:generator.cpp

示例7: start

void SoundInput::start(qint32 device)
{
	stop();

//---------------------------------------------------- Soundcard Setup
	m_callbackData.kin=0;                              //Buffer pointer
	m_callbackData.ncall=0;                            //Number of callbacks
	m_callbackData.bzero=false;                        //Flag to request reset of kin
	m_callbackData.monitoring=m_monitoring;

	//### Temporary: hardwired device selection
	QAudioDeviceInfo  DeviceInfo;
	QList<QAudioDeviceInfo> m_InDevices;
	QAudioDeviceInfo  m_InDeviceInfo;
	m_InDevices = DeviceInfo.availableDevices(QAudio::AudioInput);
	inputDevice = m_InDevices.at(0);
	//###
//  qDebug() << "B" << m_InDevices.length() << inputDevice.deviceName();

	const char* pcmCodec = "audio/pcm";
	QAudioFormat audioFormat = inputDevice.preferredFormat();
	audioFormat.setChannelCount(1);
	audioFormat.setCodec(pcmCodec);
	audioFormat.setSampleRate(12000);
	audioFormat.setSampleType(QAudioFormat::SignedInt);
	audioFormat.setSampleSize(16);

//  qDebug() << "C" << audioFormat << audioFormat.isValid();

	if (!audioFormat.isValid()) {
		emit error(tr("Requested audio format is not available."));
		return;
	}

	audioInput = new QAudioInput(inputDevice, audioFormat);
//  qDebug() << "D" << audioInput->error() << QAudio::NoError;
  if (audioInput->error() != QAudio::NoError) {
		emit error(reportAudioError(audioInput->error()));
		return;
	}

	stream = audioInput->start();
//  qDebug() << "E" << stream->errorString();

	m_ntr0 = 99;		     // initial value higher than any expected
	m_nBusy = 0;
	m_intervalTimer.start(100);
	m_ms0 = QDateTime::currentMSecsSinceEpoch();
	m_nsps0 = 0;
}
开发者ID:tgimmel，项目名称:wsjtx-r3520-src-Debian，代码行数:50，代码来源:soundin.cpp

示例8: qDebug

bool Lockin2::start(const QAudioDeviceInfo &audioDevice, const QAudioFormat &format)
{
    if (_audioInput != 0) {
        qDebug() << __FUNCTION__ << ": lockin is already running, please stop is before start";
        return false;
    }

    if (!format.isValid()) {
        qDebug() << __FUNCTION__ << ": format not valid";
        return false;
    }

    if (!isFormatSupported(format)) {
        qDebug() << __FUNCTION__ << ": format not supported for lockin2";
        return false;
    }

    if (audioDevice.isFormatSupported(format)) {
        _audioInput = new QAudioInput(audioDevice, format, this);
        _audioInput->setNotifyInterval(_outputPeriod * 1000.0);

        connect(_audioInput, SIGNAL(notify()), this, SLOT(interpretInput()));
        connect(_audioInput, SIGNAL(stateChanged(QAudio::State)), this, SLOT(audioStateChanged(QAudio::State)));

        // pour être au millieu avec le temps
        _timeValue = -(_integrationTime / 2.0);

        // nombre d'échantillons pour le temps d'integration
        _sampleIntegration = format.sampleRate() * _integrationTime;

        // nombre d'échantillons pour un affichage de vumeter
        _sampleVumeter = _vumeterTime * format.sampleRate();

        // nettoyage des variables
        _fifo->readAll(); // vide le fifo
        _dataXY.clear(); // vide <x,y>

        _format = format;

        _audioInput->start(_fifo);
    } else {
        qDebug() << __FUNCTION__ << ": format not supported, can't start";
        return false;
    }


    return true;
}
开发者ID:antigol，项目名称:lockin2，代码行数:48，代码来源:lockin2.cpp

示例9: start

void SoundInput::start(QAudioDeviceInfo const& device, int framesPerBuffer, AudioDevice * sink, unsigned downSampleFactor, AudioDevice::Channel channel)
{
  Q_ASSERT (sink);

  stop ();

  m_sink = sink;

  QAudioFormat format (device.preferredFormat());
  format.setChannelCount (AudioDevice::Mono == channel ? 1 : 2);
  format.setCodec ("audio/pcm");
  format.setSampleRate (12000 * downSampleFactor);
  format.setSampleType (QAudioFormat::SignedInt);
  format.setSampleSize (16);

  if (!format.isValid ())
    {
      Q_EMIT error (tr ("Requested input audio format is not valid."));
      return;
    }

  // this function lies!
  // if (!device.isFormatSupported (format))
  //   {
  //     Q_EMIT error (tr ("Requested input audio format is not supported on device."));
  //     return;
  //   }

  m_stream.reset (new QAudioInput {device, format});
  if (audioError ())
    {
      return;
    }

  connect (m_stream.data(), &QAudioInput::stateChanged, this, &SoundInput::handleStateChanged);

  m_stream->setBufferSize (m_stream->format ().bytesForFrames (framesPerBuffer));
  if (sink->initialize (QIODevice::WriteOnly, channel))
    {
      m_stream->start (sink);
      audioError ();
    }
  else
    {
      Q_EMIT error (tr ("Failed to initialize audio sink device"));
    }
}
开发者ID:DaneGardner，项目名称:WSJTX，代码行数:47，代码来源:soundin.cpp

示例10: bufferProbed

void QGstreamerAudioProbeControl::bufferProbed(GstBuffer* buffer)
{
    GstCaps* caps = gst_buffer_get_caps(buffer);
    if (!caps)
        return;

    QAudioFormat format = QGstUtils::audioFormatForCaps(caps);
    gst_caps_unref(caps);
    if (!format.isValid())
        return;

    QAudioBuffer audioBuffer = QAudioBuffer(QByteArray((const char*)buffer->data, buffer->size), format);

    {
        QMutexLocker locker(&m_bufferMutex);
        m_pendingBuffer = audioBuffer;
        QMetaObject::invokeMethod(this, "bufferProbed", Qt::QueuedConnection);
    }
}
开发者ID:Elleo，项目名称:qtmultimedia，代码行数:19，代码来源:qgstreameraudioprobecontrol.cpp

示例11: getPeakValue

// 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);
}
开发者ID:bitbaba，项目名称:bitmail，代码行数:37，代码来源:audiorecorder.cpp

示例12: initialize

bool OutputQtMultimedia::initialize(quint32 freq, ChannelMap map, Qmmp::AudioFormat format)
{
    QAudioFormat qformat;
    qformat.setCodec("audio/pcm");
    qformat.setFrequency(freq);
    qformat.setByteOrder(QAudioFormat::LittleEndian);
    qformat.setChannels(map.size());
    qformat.setSampleType(QAudioFormat::SignedInt);

    //Size of sample representation in input data. For 24-bit is 4, high byte is ignored.
    qint64 bytes_per_sample = 0;

    switch (format)
    {
    case Qmmp::PCM_S8:
        qformat.setSampleSize(8);
        bytes_per_sample = 1;
        break;
    case Qmmp::PCM_S16LE:
        qformat.setSampleSize(16);
        bytes_per_sample = 2;
        break;
    case Qmmp::PCM_S24LE:
        qformat.setSampleSize(24);
        bytes_per_sample = 4;
        break;
    case Qmmp::PCM_S32LE:
        qformat.setSampleSize(32);
        bytes_per_sample = 4;
        break;
    default:
        break;
    }

    if (!qformat.isValid())
        return false;

    m_bytes_per_second = bytes_per_sample * freq * qformat.channels();

    const QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    const QString saved_device_name = settings.value("QTMULTIMEDIA/device").toString();

    QAudioDeviceInfo device_info;
    if (!saved_device_name.isEmpty())
    {
        const QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
        foreach (const QAudioDeviceInfo &info, devices)
        {
            if (info.deviceName()==saved_device_name)
            {
                if (info.isFormatSupported(qformat))
                {
                    device_info = info;
                    break;
                }
                else
                    qDebug() << "OutputQtMultimedia: Output device: " << saved_device_name << " is not supported";
            }
        }
    }

    if (device_info.isNull())
    {
        device_info = QAudioDeviceInfo::defaultOutputDevice();
        if (!device_info.isFormatSupported(qformat))
            return false;
    }

    qDebug() << "OutputQtMultimedia: Using output device: " << device_info.deviceName();

    m_output.reset(new QAudioOutput(device_info, qformat));
    m_buffer = m_output->start();

    configure(freq, map, format);
    return true;
}
开发者ID:Greedysky，项目名称:qmmp，代码行数:76，代码来源:outputqtmultimedia.cpp


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