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// Copyright (C) 2016 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
//
// 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.
//
// INTERNAL USE ONLY: Do NOT use for any other purpose.
//
#include "qwindowsaudiodevice_p.h"
#include "qwindowsaudioutils_p.h"
#include <QtCore/qt_windows.h>
#include <QtCore/QDataStream>
#include <QtCore/QIODevice>
#include <audioclient.h>
#include <mmsystem.h>
#include <initguid.h>
#include <wtypes.h>
#include <propkeydef.h>
#include <mmdeviceapi.h>
QT_BEGIN_NAMESPACE
QWindowsAudioDeviceInfo::QWindowsAudioDeviceInfo(QByteArray dev, QComPtr<IMMDevice> immDev, int waveID, const QString &description, QAudioDevice::Mode mode)
: QAudioDevicePrivate(dev, mode),
m_devId(waveID),
m_immDev(std::move(immDev))
{
Q_ASSERT(m_immDev);
this->description = description;
QComPtr<IAudioClient> audioClient;
HRESULT hr = m_immDev->Activate(__uuidof(IAudioClient), CLSCTX_INPROC_SERVER, nullptr,
(void **)audioClient.address());
if (SUCCEEDED(hr)) {
WAVEFORMATEX *pwfx = nullptr;
hr = audioClient->GetMixFormat(&pwfx);
if (SUCCEEDED(hr))
preferredFormat = QWindowsAudioUtils::waveFormatExToFormat(*pwfx);
}
if (!preferredFormat.isValid()) {
preferredFormat.setSampleRate(44100);
preferredFormat.setChannelCount(2);
preferredFormat.setSampleFormat(QAudioFormat::Int16);
}
DWORD fmt = 0;
if(mode == QAudioDevice::Output) {
WAVEOUTCAPS woc;
if (waveOutGetDevCaps(m_devId, &woc, sizeof(WAVEOUTCAPS)) == MMSYSERR_NOERROR)
fmt = woc.dwFormats;
} else {
WAVEINCAPS woc;
if (waveInGetDevCaps(m_devId, &woc, sizeof(WAVEINCAPS)) == MMSYSERR_NOERROR)
fmt = woc.dwFormats;
}
if (!fmt)
return;
// Check sample size
if ((fmt & WAVE_FORMAT_1M08)
|| (fmt & WAVE_FORMAT_1S08)
|| (fmt & WAVE_FORMAT_2M08)
|| (fmt & WAVE_FORMAT_2S08)
|| (fmt & WAVE_FORMAT_4M08)
|| (fmt & WAVE_FORMAT_4S08)
|| (fmt & WAVE_FORMAT_48M08)
|| (fmt & WAVE_FORMAT_48S08)
|| (fmt & WAVE_FORMAT_96M08)
|| (fmt & WAVE_FORMAT_96S08)) {
supportedSampleFormats.append(QAudioFormat::UInt8);
}
if ((fmt & WAVE_FORMAT_1M16)
|| (fmt & WAVE_FORMAT_1S16)
|| (fmt & WAVE_FORMAT_2M16)
|| (fmt & WAVE_FORMAT_2S16)
|| (fmt & WAVE_FORMAT_4M16)
|| (fmt & WAVE_FORMAT_4S16)
|| (fmt & WAVE_FORMAT_48M16)
|| (fmt & WAVE_FORMAT_48S16)
|| (fmt & WAVE_FORMAT_96M16)
|| (fmt & WAVE_FORMAT_96S16)) {
supportedSampleFormats.append(QAudioFormat::Int16);
}
minimumSampleRate = std::numeric_limits<int>::max();
maximumSampleRate = 0;
// Check sample rate
if ((fmt & WAVE_FORMAT_1M08)
|| (fmt & WAVE_FORMAT_1S08)
|| (fmt & WAVE_FORMAT_1M16)
|| (fmt & WAVE_FORMAT_1S16)) {
minimumSampleRate = qMin(minimumSampleRate, 11025);
maximumSampleRate = qMax(maximumSampleRate, 11025);
}
if ((fmt & WAVE_FORMAT_2M08)
|| (fmt & WAVE_FORMAT_2S08)
|| (fmt & WAVE_FORMAT_2M16)
|| (fmt & WAVE_FORMAT_2S16)) {
minimumSampleRate = qMin(minimumSampleRate, 22050);
maximumSampleRate = qMax(maximumSampleRate, 22050);
}
if ((fmt & WAVE_FORMAT_4M08)
|| (fmt & WAVE_FORMAT_4S08)
|| (fmt & WAVE_FORMAT_4M16)
|| (fmt & WAVE_FORMAT_4S16)) {
minimumSampleRate = qMin(minimumSampleRate, 44100);
maximumSampleRate = qMax(maximumSampleRate, 44100);
}
if ((fmt & WAVE_FORMAT_48M08)
|| (fmt & WAVE_FORMAT_48S08)
|| (fmt & WAVE_FORMAT_48M16)
|| (fmt & WAVE_FORMAT_48S16)) {
minimumSampleRate = qMin(minimumSampleRate, 48000);
maximumSampleRate = qMax(maximumSampleRate, 48000);
}
if ((fmt & WAVE_FORMAT_96M08)
|| (fmt & WAVE_FORMAT_96S08)
|| (fmt & WAVE_FORMAT_96M16)
|| (fmt & WAVE_FORMAT_96S16)) {
minimumSampleRate = qMin(minimumSampleRate, 96000);
maximumSampleRate = qMax(maximumSampleRate, 96000);
}
if (minimumSampleRate == std::numeric_limits<int>::max())
minimumSampleRate = 0;
minimumChannelCount = std::numeric_limits<int>::max();
maximumChannelCount = 0;
// Check channel count
if (fmt & WAVE_FORMAT_1M08
|| fmt & WAVE_FORMAT_1M16
|| fmt & WAVE_FORMAT_2M08
|| fmt & WAVE_FORMAT_2M16
|| fmt & WAVE_FORMAT_4M08
|| fmt & WAVE_FORMAT_4M16
|| fmt & WAVE_FORMAT_48M08
|| fmt & WAVE_FORMAT_48M16
|| fmt & WAVE_FORMAT_96M08
|| fmt & WAVE_FORMAT_96M16) {
minimumChannelCount = 1;
maximumChannelCount = 1;
}
if (fmt & WAVE_FORMAT_1S08
|| fmt & WAVE_FORMAT_1S16
|| fmt & WAVE_FORMAT_2S08
|| fmt & WAVE_FORMAT_2S16
|| fmt & WAVE_FORMAT_4S08
|| fmt & WAVE_FORMAT_4S16
|| fmt & WAVE_FORMAT_48S08
|| fmt & WAVE_FORMAT_48S16
|| fmt & WAVE_FORMAT_96S08
|| fmt & WAVE_FORMAT_96S16) {
minimumChannelCount = qMin(minimumChannelCount, 2);
maximumChannelCount = qMax(maximumChannelCount, 2);
}
if (minimumChannelCount == std::numeric_limits<int>::max())
minimumChannelCount = 0;
// WAVEOUTCAPS and WAVEINCAPS contains information only for the previously tested parameters.
// WaveOut and WaveInt might actually support more formats, the only way to know is to try
// opening the device with it.
QAudioFormat testFormat;
testFormat.setChannelCount(maximumChannelCount);
testFormat.setSampleRate(maximumSampleRate);
const QAudioFormat defaultTestFormat(testFormat);
// Check if float samples are supported
testFormat.setSampleFormat(QAudioFormat::Float);
if (testSettings(testFormat))
supportedSampleFormats.append(QAudioFormat::Float);
// Check channel counts > 2
testFormat = defaultTestFormat;
for (int i = 18; i > 2; --i) { // <mmreg.h> defines 18 different channels
testFormat.setChannelCount(i);
if (testSettings(testFormat)) {
maximumChannelCount = i;
break;
}
}
channelConfiguration = QAudioFormat::defaultChannelConfigForChannelCount(maximumChannelCount);
QComPtr<IPropertyStore> props;
hr = m_immDev->OpenPropertyStore(STGM_READ, props.address());
if (SUCCEEDED(hr)) {
PROPVARIANT var;
PropVariantInit(&var);
hr = props->GetValue(PKEY_AudioEndpoint_PhysicalSpeakers, &var);
if (SUCCEEDED(hr) && var.uintVal != 0)
channelConfiguration = QWindowsAudioUtils::maskToChannelConfig(var.uintVal, maximumChannelCount);
}
}
QWindowsAudioDeviceInfo::~QWindowsAudioDeviceInfo()
{
}
bool QWindowsAudioDeviceInfo::testSettings(const QAudioFormat& format) const
{
WAVEFORMATEXTENSIBLE wfx;
if (QWindowsAudioUtils::formatToWaveFormatExtensible(format, wfx)) {
// query only, do not open device
if (mode == QAudioDevice::Output) {
return (waveOutOpen(NULL, UINT_PTR(m_devId), &wfx.Format, 0, 0,
WAVE_FORMAT_QUERY) == MMSYSERR_NOERROR);
} else { // AudioInput
return (waveInOpen(NULL, UINT_PTR(m_devId), &wfx.Format, 0, 0,
WAVE_FORMAT_QUERY) == MMSYSERR_NOERROR);
}
}
return false;
}
QT_END_NAMESPACE
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