qaudio_mac_p.h File Reference

#include <CoreAudio/CoreAudio.h>
#include <QtCore/qdebug.h>
#include <QtCore/qatomic.h>
#include <QtMultimedia/qaudioformat.h>

Go to the source code of this file.

Classes
class	QAudioRingBuffer

Functions
QDebug	operator<< (QDebug dbg, const QAudioFormat &audioFormat)
AudioStreamBasicDescription	toAudioStreamBasicDescription (QAudioFormat const &audioFormat)
QAudioFormat	toQAudioFormat (const AudioStreamBasicDescription &streamFormat)

Function Documentation

operator<<()

QDebug operator<<	(	QDebug	dbg,
		const QAudioFormat &	audioFormat
	)

Definition at line 48 of file qaudio_mac.cpp.

{
    dbg.nospace() << "QAudioFormat(" <<
            audioFormat.frequency() << "," <<
            audioFormat.channels() << "," <<
            audioFormat.sampleSize()<< "," <<
            audioFormat.codec() << "," <<
            audioFormat.byteOrder() << "," <<
            audioFormat.sampleType() << ")";

    return dbg.space();
}

toAudioStreamBasicDescription()

AudioStreamBasicDescription toAudioStreamBasicDescription

(

QAudioFormat const &

audioFormat

)

Definition at line 82 of file qaudio_mac.cpp.

{
    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;
}

toQAudioFormat()

QAudioFormat toQAudioFormat

(

const AudioStreamBasicDescription &

streamFormat

)

Definition at line 63 of file qaudio_mac.cpp.

Referenced by QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(), and QtMultimediaInternal::QAudioInputBuffer::QAudioInputBuffer().

{
    QAudioFormat    audioFormat;

    audioFormat.setFrequency(sf.mSampleRate);
    audioFormat.setChannels(sf.mChannelsPerFrame);
    audioFormat.setSampleSize(sf.mBitsPerChannel);
    audioFormat.setCodec(QString::fromLatin1("audio/pcm"));
    audioFormat.setByteOrder((sf.mFormatFlags & kAudioFormatFlagIsBigEndian) != 0 ? QAudioFormat::BigEndian : QAudioFormat::LittleEndian);
    QAudioFormat::SampleType type = QAudioFormat::UnSignedInt;
    if ((sf.mFormatFlags & kAudioFormatFlagIsSignedInteger) != 0)
        type = QAudioFormat::SignedInt;
    else if ((sf.mFormatFlags & kAudioFormatFlagIsFloat) != 0)
        type = QAudioFormat::Float;
    audioFormat.setSampleType(type);

    return audioFormat;
}