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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
#include "qwindowsaudioutils_p.h"
#include "qwindowsmediafoundation_p.h"
#include "qdebug.h"
#include "ks.h"
#include "ksmedia.h"
#include <audioclient.h>
QT_BEGIN_NAMESPACE
static QAudioFormat::AudioChannelPosition channelFormatMap[] =
{ QAudioFormat::FrontLeft // SPEAKER_FRONT_LEFT (0x1)
, QAudioFormat::FrontRight // SPEAKER_FRONT_RIGHT (0x2)
, QAudioFormat::FrontCenter // SPEAKER_FRONT_CENTER (0x4)
, QAudioFormat::LFE // SPEAKER_LOW_FREQUENCY (0x8)
, QAudioFormat::BackLeft // SPEAKER_BACK_LEFT (0x10)
, QAudioFormat::BackRight // SPEAKER_BACK_RIGHT (0x20)
, QAudioFormat::FrontLeftOfCenter // SPEAKER_FRONT_LEFT_OF_CENTER (0x40)
, QAudioFormat::FrontRightOfCenter// SPEAKER_FRONT_RIGHT_OF_CENTER (0x80)
, QAudioFormat::BackCenter // SPEAKER_BACK_CENTER (0x100)
, QAudioFormat::SideLeft // SPEAKER_SIDE_LEFT (0x200)
, QAudioFormat::SideRight // SPEAKER_SIDE_RIGHT (0x400)
, QAudioFormat::TopCenter // SPEAKER_TOP_CENTER (0x800)
, QAudioFormat::TopFrontLeft // SPEAKER_TOP_FRONT_LEFT (0x1000)
, QAudioFormat::TopFrontCenter // SPEAKER_TOP_FRONT_CENTER (0x2000)
, QAudioFormat::TopFrontRight // SPEAKER_TOP_FRONT_RIGHT (0x4000)
, QAudioFormat::TopBackLeft // SPEAKER_TOP_BACK_LEFT (0x8000)
, QAudioFormat::TopBackCenter // SPEAKER_TOP_BACK_CENTER (0x10000)
, QAudioFormat::TopBackRight // SPEAKER_TOP_BACK_RIGHT (0x20000)
};
QAudioFormat::ChannelConfig QWindowsAudioUtils::maskToChannelConfig(UINT32 mask, int count)
{
quint32 config = 0;
int set = 0;
for (auto c : channelFormatMap) {
if (mask & 1) {
config |= QAudioFormat::channelConfig(c);
++set;
}
if (set >= count)
break;
mask >>= 1;
}
return QAudioFormat::ChannelConfig(config);
}
static UINT32 channelConfigToMask(QAudioFormat::ChannelConfig config)
{
UINT32 mask = 0;
quint32 i = 0;
for (auto c : channelFormatMap) {
if (config & QAudioFormat::channelConfig(c))
mask |= 1 << i;
++i;
}
return mask;
}
bool QWindowsAudioUtils::formatToWaveFormatExtensible(const QAudioFormat &format, WAVEFORMATEXTENSIBLE &wfx)
{
if (!format.isValid())
return false;
wfx.Format.nSamplesPerSec = format.sampleRate();
wfx.Format.wBitsPerSample = wfx.Samples.wValidBitsPerSample = format.bytesPerSample()*8;
wfx.Format.nChannels = format.channelCount();
wfx.Format.nBlockAlign = (wfx.Format.wBitsPerSample / 8) * wfx.Format.nChannels;
wfx.Format.nAvgBytesPerSec = wfx.Format.nBlockAlign * wfx.Format.nSamplesPerSec;
wfx.Format.cbSize = 0;
if (format.sampleFormat() == QAudioFormat::Float) {
wfx.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
wfx.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
} else {
wfx.Format.wFormatTag = WAVE_FORMAT_PCM;
wfx.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}
if (format.channelCount() > 2) {
wfx.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wfx.Format.cbSize = 22;
wfx.dwChannelMask = format.channelConfig() == QAudioFormat::ChannelConfigUnknown ? KSAUDIO_SPEAKER_DIRECTOUT
: DWORD(format.channelConfig());
}
return true;
}
QAudioFormat QWindowsAudioUtils::waveFormatExToFormat(const WAVEFORMATEX &in)
{
QAudioFormat out;
out.setSampleRate(in.nSamplesPerSec);
out.setChannelCount(in.nChannels);
if (in.wFormatTag == WAVE_FORMAT_PCM) {
if (in.wBitsPerSample == 8)
out.setSampleFormat(QAudioFormat::UInt8);
else if (in.wBitsPerSample == 16)
out.setSampleFormat(QAudioFormat::Int16);
else if (in.wBitsPerSample == 32)
out.setSampleFormat(QAudioFormat::Int32);
} else if (in.wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
if (in.cbSize >= 22) {
auto wfe = reinterpret_cast<const WAVEFORMATEXTENSIBLE &>(in);
if (wfe.SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)
out.setSampleFormat(QAudioFormat::Float);
if (qPopulationCount(wfe.dwChannelMask) >= in.nChannels)
out.setChannelConfig(maskToChannelConfig(wfe.dwChannelMask, in.nChannels));
}
} else if (in.wFormatTag == WAVE_FORMAT_IEEE_FLOAT) {
out.setSampleFormat(QAudioFormat::Float);
}
return out;
}
QAudioFormat QWindowsAudioUtils::mediaTypeToFormat(IMFMediaType *mediaType)
{
QAudioFormat format;
if (!mediaType)
return format;
UINT32 val = 0;
if (SUCCEEDED(mediaType->GetUINT32(MF_MT_AUDIO_NUM_CHANNELS, &val))) {
format.setChannelCount(int(val));
} else {
qWarning() << "Could not determine channel count from IMFMediaType";
return {};
}
if (SUCCEEDED(mediaType->GetUINT32(MF_MT_AUDIO_CHANNEL_MASK, &val))) {
if (int(qPopulationCount(val)) >= format.channelCount())
format.setChannelConfig(maskToChannelConfig(val, format.channelCount()));
}
if (SUCCEEDED(mediaType->GetUINT32(MF_MT_AUDIO_SAMPLES_PER_SECOND, &val))) {
format.setSampleRate(int(val));
}
UINT32 bitsPerSample = 0;
mediaType->GetUINT32(MF_MT_AUDIO_BITS_PER_SAMPLE, &bitsPerSample);
GUID subType;
if (SUCCEEDED(mediaType->GetGUID(MF_MT_SUBTYPE, &subType))) {
if (subType == MFAudioFormat_Float) {
format.setSampleFormat(QAudioFormat::Float);
} else if (bitsPerSample == 8) {
format.setSampleFormat(QAudioFormat::UInt8);
} else if (bitsPerSample == 16) {
format.setSampleFormat(QAudioFormat::Int16);
} else if (bitsPerSample == 32){
format.setSampleFormat(QAudioFormat::Int32);
}
}
return format;
}
ComPtr<IMFMediaType> QWindowsAudioUtils::formatToMediaType(QWindowsMediaFoundation &wmf, const QAudioFormat &format)
{
ComPtr<IMFMediaType> mediaType;
if (!format.isValid())
return mediaType;
wmf.mfCreateMediaType(mediaType.GetAddressOf());
mediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Audio);
if (format.sampleFormat() == QAudioFormat::Float) {
mediaType->SetGUID(MF_MT_SUBTYPE, MFAudioFormat_Float);
} else {
mediaType->SetGUID(MF_MT_SUBTYPE, MFAudioFormat_PCM);
}
mediaType->SetUINT32(MF_MT_AUDIO_NUM_CHANNELS, UINT32(format.channelCount()));
if (format.channelConfig() != QAudioFormat::ChannelConfigUnknown)
mediaType->SetUINT32(MF_MT_AUDIO_CHANNEL_MASK, channelConfigToMask(format.channelConfig()));
mediaType->SetUINT32(MF_MT_AUDIO_SAMPLES_PER_SECOND, UINT32(format.sampleRate()));
auto alignmentBlock = UINT32(format.bytesPerFrame());
mediaType->SetUINT32(MF_MT_AUDIO_BLOCK_ALIGNMENT, alignmentBlock);
auto avgBytesPerSec = UINT32(format.sampleRate() * format.bytesPerFrame());
mediaType->SetUINT32(MF_MT_AUDIO_AVG_BYTES_PER_SECOND, avgBytesPerSec);
mediaType->SetUINT32(MF_MT_AUDIO_BITS_PER_SAMPLE, UINT32(format.bytesPerSample()*8));
mediaType->SetUINT32(MF_MT_ALL_SAMPLES_INDEPENDENT, TRUE);
return mediaType;
}
std::optional<quint32> QWindowsAudioUtils::audioClientFramesInUse(IAudioClient *client)
{
Q_ASSERT(client);
UINT32 framesPadding = 0;
if (SUCCEEDED(client->GetCurrentPadding(&framesPadding)))
return framesPadding;
return {};
}
std::optional<quint32> QWindowsAudioUtils::audioClientFramesAllocated(IAudioClient *client)
{
Q_ASSERT(client);
UINT32 bufferFrameCount = 0;
if (SUCCEEDED(client->GetBufferSize(&bufferFrameCount)))
return bufferFrameCount;
return {};
}
QT_END_NAMESPACE
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