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** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** rights. These rights are described in the Nokia Qt LGPL Exception
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****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qstringlist.h>
#include <QtCore/qlist.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qdatastream.h>
#include <QtCore/qdebug.h>
#include <qaudiodeviceinfo.h>
#include "qaudio_mac_p.h"
#include "qaudiodeviceinfo_mac_p.h"
QT_BEGIN_NAMESPACE
// XXX: remove at some future date
static inline QString cfStringToQString(CFStringRef str)
{
CFIndex length = CFStringGetLength(str);
const UniChar *chars = CFStringGetCharactersPtr(str);
if (chars)
return QString(reinterpret_cast<const QChar *>(chars), length);
UniChar buffer[length];
CFStringGetCharacters(str, CFRangeMake(0, length), buffer);
return QString(reinterpret_cast<const QChar *>(buffer), length);
}
QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(QByteArray const& handle, QAudio::Mode)
{
QDataStream ds(handle);
quint32 did, tm;
ds >> did >> tm >> name;
deviceId = AudioDeviceID(did);
mode = QAudio::Mode(tm);
}
bool QAudioDeviceInfoInternal::isFormatSupported(const QAudioFormat& format) const
{
return format.codec() == QString::fromLatin1("audio/pcm");
}
QAudioFormat QAudioDeviceInfoInternal::preferredFormat() const
{
QAudioFormat rc;
UInt32 propSize = 0;
if (AudioDeviceGetPropertyInfo(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyStreams,
&propSize,
0) == noErr) {
const int sc = propSize / sizeof(AudioStreamID);
if (sc > 0) {
AudioStreamID* streams = new AudioStreamID[sc];
if (AudioDeviceGetProperty(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyStreams,
&propSize,
streams) == noErr) {
for (int i = 0; i < sc; ++i) {
if (AudioStreamGetPropertyInfo(streams[i],
0,
kAudioStreamPropertyPhysicalFormat,
&propSize,
0) == noErr) {
AudioStreamBasicDescription sf;
if (AudioStreamGetProperty(streams[i],
0,
kAudioStreamPropertyPhysicalFormat,
&propSize,
&sf) == noErr) {
rc = toQAudioFormat(sf);
break;
}
}
}
}
delete streams;
}
}
return rc;
}
QString QAudioDeviceInfoInternal::deviceName() const
{
return name;
}
QStringList QAudioDeviceInfoInternal::supportedCodecs()
{
return QStringList() << QString::fromLatin1("audio/pcm");
}
QList<int> QAudioDeviceInfoInternal::supportedSampleRates()
{
QSet<int> rc;
// Add some common frequencies
rc << 8000 << 11025 << 22050 << 44100;
//
UInt32 propSize = 0;
if (AudioDeviceGetPropertyInfo(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyAvailableNominalSampleRates,
&propSize,
0) == noErr) {
const int pc = propSize / sizeof(AudioValueRange);
if (pc > 0) {
AudioValueRange* vr = new AudioValueRange[pc];
if (AudioDeviceGetProperty(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyAvailableNominalSampleRates,
&propSize,
vr) == noErr) {
for (int i = 0; i < pc; ++i)
rc << vr[i].mMaximum;
}
delete vr;
}
}
return rc.toList();
}
QList<int> QAudioDeviceInfoInternal::supportedChannelCounts()
{
QList<int> rc;
// Can mix down to 1 channel
rc << 1;
UInt32 propSize = 0;
int channels = 0;
if (AudioDeviceGetPropertyInfo(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyStreamConfiguration,
&propSize,
0) == noErr) {
AudioBufferList* audioBufferList = static_cast<AudioBufferList*>(qMalloc(propSize));
if (audioBufferList != 0) {
if (AudioDeviceGetProperty(deviceId,
0,
mode == QAudio::AudioInput,
kAudioDevicePropertyStreamConfiguration,
&propSize,
audioBufferList) == noErr) {
for (int i = 0; i < int(audioBufferList->mNumberBuffers); ++i) {
channels += audioBufferList->mBuffers[i].mNumberChannels;
rc << channels;
}
}
qFree(audioBufferList);
}
}
return rc;
}
QList<int> QAudioDeviceInfoInternal::supportedSampleSizes()
{
return QList<int>() << 8 << 16 << 24 << 32 << 64;
}
QList<QAudioFormat::Endian> QAudioDeviceInfoInternal::supportedByteOrders()
{
return QList<QAudioFormat::Endian>() << QAudioFormat::LittleEndian << QAudioFormat::BigEndian;
}
QList<QAudioFormat::SampleType> QAudioDeviceInfoInternal::supportedSampleTypes()
{
return QList<QAudioFormat::SampleType>() << QAudioFormat::SignedInt << QAudioFormat::UnSignedInt << QAudioFormat::Float;
}
static QByteArray get_device_info(AudioDeviceID audioDevice, QAudio::Mode mode)
{
UInt32 size;
QByteArray device;
QDataStream ds(&device, QIODevice::WriteOnly);
AudioStreamBasicDescription sf;
CFStringRef name;
Boolean isInput = mode == QAudio::AudioInput;
// Id
ds << quint32(audioDevice);
// Mode
size = sizeof(AudioStreamBasicDescription);
if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioDevicePropertyStreamFormat,
&size, &sf) != noErr) {
return QByteArray();
}
ds << quint32(mode);
// Name
size = sizeof(CFStringRef);
if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioObjectPropertyName,
&size, &name) != noErr) {
qWarning() << "QAudioDeviceInfo: Unable to find device name";
}
ds << cfStringToQString(name);
CFRelease(name);
return device;
}
QByteArray QAudioDeviceInfoInternal::defaultInputDevice()
{
AudioDeviceID audioDevice;
UInt32 size = sizeof(audioDevice);
if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &size,
&audioDevice) != noErr) {
qWarning() << "QAudioDeviceInfo: Unable to find default input device";
return QByteArray();
}
return get_device_info(audioDevice, QAudio::AudioInput);
}
QByteArray QAudioDeviceInfoInternal::defaultOutputDevice()
{
AudioDeviceID audioDevice;
UInt32 size = sizeof(audioDevice);
if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &size,
&audioDevice) != noErr) {
qWarning() << "QAudioDeviceInfo: Unable to find default output device";
return QByteArray();
}
return get_device_info(audioDevice, QAudio::AudioOutput);
}
QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)
{
QList<QByteArray> devices;
UInt32 propSize = 0;
if (AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &propSize, 0) == noErr) {
const int dc = propSize / sizeof(AudioDeviceID);
if (dc > 0) {
AudioDeviceID* audioDevices = new AudioDeviceID[dc];
if (AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &propSize, audioDevices) == noErr) {
for (int i = 0; i < dc; ++i) {
QByteArray info = get_device_info(audioDevices[i], mode);
if (!info.isNull())
devices << info;
}
}
delete audioDevices;
}
}
return devices;
}
QT_END_NAMESPACE