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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qmacosaudiodatautils_p.h"
QT_BEGIN_NAMESPACE
namespace QCoreAudioUtils
{
#define ENUM_CASE(NAME) \
case NAME: return QStringView(QT_UNICODE_LITERAL(QT_STRINGIFY(NAME)))
#define DUPLICATE_ENUM_CASE(NAME) static_assert(true, "force semicolon")
QStringView audioPropertySelectorToString(AudioObjectPropertySelector selector)
{
switch (selector) {
// AudioObject properties
ENUM_CASE(kAudioObjectPropertyBaseClass );
ENUM_CASE(kAudioObjectPropertyClass );
ENUM_CASE(kAudioObjectPropertyOwner );
ENUM_CASE(kAudioObjectPropertyName );
ENUM_CASE(kAudioObjectPropertyModelName );
ENUM_CASE(kAudioObjectPropertyManufacturer );
ENUM_CASE(kAudioObjectPropertyElementName );
ENUM_CASE(kAudioObjectPropertyElementCategoryName);
ENUM_CASE(kAudioObjectPropertyElementNumberName );
ENUM_CASE(kAudioObjectPropertyOwnedObjects );
ENUM_CASE(kAudioObjectPropertyIdentify );
ENUM_CASE(kAudioObjectPropertySerialNumber );
ENUM_CASE(kAudioObjectPropertyFirmwareVersion );
ENUM_CASE(kAudioObjectPropertySelectorWildcard );
// AudioDevice properties
ENUM_CASE(kAudioDevicePropertyConfigurationApplication );
ENUM_CASE(kAudioDevicePropertyDeviceUID );
ENUM_CASE(kAudioDevicePropertyModelUID );
ENUM_CASE(kAudioDevicePropertyTransportType );
ENUM_CASE(kAudioDevicePropertyRelatedDevices );
ENUM_CASE(kAudioDevicePropertyClockDomain );
ENUM_CASE(kAudioDevicePropertyDeviceIsAlive );
ENUM_CASE(kAudioDevicePropertyDeviceIsRunning );
ENUM_CASE(kAudioDevicePropertyDeviceCanBeDefaultDevice );
ENUM_CASE(kAudioDevicePropertyDeviceCanBeDefaultSystemDevice);
ENUM_CASE(kAudioDevicePropertyLatency );
ENUM_CASE(kAudioDevicePropertyStreams );
ENUM_CASE(kAudioObjectPropertyControlList );
ENUM_CASE(kAudioDevicePropertySafetyOffset );
ENUM_CASE(kAudioDevicePropertyNominalSampleRate );
ENUM_CASE(kAudioDevicePropertyAvailableNominalSampleRates );
ENUM_CASE(kAudioDevicePropertyIcon );
ENUM_CASE(kAudioDevicePropertyIsHidden );
ENUM_CASE(kAudioDevicePropertyPreferredChannelsForStereo );
ENUM_CASE(kAudioDevicePropertyPreferredChannelLayout );
// AudioClockDevice properties
ENUM_CASE(kAudioClockDevicePropertyDeviceUID );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyTransportType );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyClockDomain );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyDeviceIsAlive );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyDeviceIsRunning );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyLatency );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyControlList );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyNominalSampleRate );
DUPLICATE_ENUM_CASE(kAudioClockDevicePropertyAvailableNominalSampleRates);
// AudioEndPointDevice properties
ENUM_CASE(kAudioEndPointDevicePropertyComposition );
ENUM_CASE(kAudioEndPointDevicePropertyEndPointList);
ENUM_CASE(kAudioEndPointDevicePropertyIsPrivate );
// AudioStream properties
ENUM_CASE(kAudioStreamPropertyIsActive );
ENUM_CASE(kAudioStreamPropertyDirection );
ENUM_CASE(kAudioStreamPropertyTerminalType );
ENUM_CASE(kAudioStreamPropertyStartingChannel );
ENUM_CASE(kAudioStreamPropertyVirtualFormat );
ENUM_CASE(kAudioStreamPropertyAvailableVirtualFormats );
ENUM_CASE(kAudioStreamPropertyPhysicalFormat );
ENUM_CASE(kAudioStreamPropertyAvailablePhysicalFormats);
default:
Q_UNREACHABLE_RETURN(u"");
}
}
QStringView audioPropertyScopeToString(AudioObjectPropertyScope scope)
{
switch (scope) {
ENUM_CASE(kAudioObjectPropertyScopeGlobal );
ENUM_CASE(kAudioObjectPropertyScopeInput );
ENUM_CASE(kAudioObjectPropertyScopeOutput );
ENUM_CASE(kAudioObjectPropertyScopePlayThrough);
ENUM_CASE(kAudioObjectPropertyScopeWildcard );
default:
Q_UNREACHABLE_RETURN(u"");
}
}
QStringView audioPropertyElementToString(AudioObjectPropertyElement element)
{
switch (element) {
ENUM_CASE(kAudioObjectPropertyElementMain );
ENUM_CASE(kAudioObjectPropertyElementWildcard);
default:
Q_UNREACHABLE_RETURN(u"");
}
}
#undef ENUM_CASE
#undef DUPLICATE_ENUM_CASE
}
AudioObjectPropertyAddress
QCoreAudioUtils::makePropertyAddress(
AudioObjectPropertySelector selector,
QAudioDevice::Mode mode,
AudioObjectPropertyElement element)
{
return { selector,
mode == QAudioDevice::Input ? kAudioDevicePropertyScopeInput
: kAudioDevicePropertyScopeOutput,
element };
}
bool QCoreAudioUtils::getAudioPropertyRaw(AudioObjectID objectID, const AudioObjectPropertyAddress &address,
QSpan<std::byte> destination, bool warnIfMissing)
{
UInt32 readBytes = destination.size();
const auto res =
AudioObjectGetPropertyData(objectID, &address, 0, nullptr, &readBytes, destination.data());
if (res != noErr) {
if (warnIfMissing)
printUnableToReadWarning(objectID, address, "Err:", res);
} else if (readBytes != destination.size()) {
if (warnIfMissing)
printUnableToReadWarning(objectID, address, "Data size", readBytes, "VS", destination.size(),
"expected");
} else {
return true;
}
return false;
}
QByteArray QCoreAudioUtils::readPersistentDeviceId(
AudioDeviceID device,
QAudioDevice::Mode mode)
{
const AudioObjectPropertyAddress propertyAddress = makePropertyAddress(
kAudioDevicePropertyDeviceUID,
mode);
const std::optional<QCFString> name = getAudioProperty<QCFString>(device, propertyAddress);
if (name)
return QString{*name}.toUtf8();
return QByteArray();
}
std::optional<AudioDeviceID> QCoreAudioUtils::findAudioDeviceId(
const QByteArray &id,
QAudioDevice::Mode mode)
{
if (id.isEmpty() || mode == QAudioDevice::Mode::Null)
return std::nullopt;
// Iterate over all the devices connected and find the one matching our ID and return the AudioDeviceID.
const AudioObjectPropertyAddress audioDevicesPropertyAddress = {
kAudioHardwarePropertyDevices, kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMain
};
const std::optional<std::vector<AudioDeviceID>> audioDevicesOpt = getAudioPropertyList<AudioDeviceID>(
kAudioObjectSystemObject,
audioDevicesPropertyAddress);
if (audioDevicesOpt.has_value()) {
const std::vector<AudioDeviceID> &audioDevices = audioDevicesOpt.value();
const AudioObjectPropertyAddress audioDeviceStreamFormatPropertyAddress = makePropertyAddress(
kAudioDevicePropertyStreamFormat,
mode);
for (const AudioDeviceID &device : audioDevices) {
// Ignore devices that don't have any audio formats we can use.
const std::optional<AudioStreamBasicDescription> audioStreamOpt =
getAudioProperty<AudioStreamBasicDescription>(
device,
audioDeviceStreamFormatPropertyAddress);
// Check that these devices have the same unique-id. In which case, we found the
// correct CoreAudioID.
if (audioStreamOpt.has_value() && readPersistentDeviceId(device, mode) == id)
return device;
}
}
return std::nullopt;
}
std::optional<AudioDeviceID> QCoreAudioUtils::findAudioDeviceId(
const QAudioDevice &device)
{
return findAudioDeviceId(device.id(), device.mode());
}
QT_END_NAMESPACE
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