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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwindowsdevicemanager_p.h"
#include "qmediadevicemanager.h"
#include "qcamerainfo_p.h"
#include "qvarlengtharray.h"
#include "private/qwindowsaudioinput_p.h"
#include "private/qwindowsaudiooutput_p.h"
#include "private/qwindowsaudiodeviceinfo_p.h"
#include <private/mftvideo_p.h>
#include <mmsystem.h>
#include <mmddk.h>
#include <mfapi.h>
#include <mfobjects.h>
#include <mfidl.h>
#include <mfreadwrite.h>
#include <Mferror.h>
#include "private/qwindowsaudioutils_p.h"
QT_BEGIN_NAMESPACE
QWindowsDeviceManager::QWindowsDeviceManager()
: QPlatformMediaDeviceManager()
{
}
static QList<QAudioDeviceInfo> availableDevices(QAudio::Mode mode)
{
Q_UNUSED(mode);
QList<QAudioDeviceInfo> devices;
//enumerate device fullnames through directshow api
auto hrCoInit = CoInitialize(nullptr);
ICreateDevEnum *pDevEnum = NULL;
IEnumMoniker *pEnum = NULL;
// Create the System device enumerator
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
reinterpret_cast<void **>(&pDevEnum));
unsigned long iNumDevs = mode == QAudio::AudioOutput ? waveOutGetNumDevs() : waveInGetNumDevs();
if (SUCCEEDED(hr)) {
// Create the enumerator for the audio input/output category
if (pDevEnum->CreateClassEnumerator(
mode == QAudio::AudioOutput ? CLSID_AudioRendererCategory : CLSID_AudioInputDeviceCategory,
&pEnum, 0) == S_OK) {
pEnum->Reset();
// go through and find all audio devices
IMoniker *pMoniker = NULL;
while (pEnum->Next(1, &pMoniker, NULL) == S_OK) {
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0,0,IID_IPropertyBag,
reinterpret_cast<void **>(&pPropBag));
if (FAILED(hr)) {
pMoniker->Release();
continue; // skip this one
}
// Find if it is a wave device
VARIANT var;
VariantInit(&var);
hr = pPropBag->Read(mode == QAudio::AudioOutput ? L"WaveOutID" : L"WaveInID", &var, 0);
if (SUCCEEDED(hr)) {
LONG waveID = var.lVal;
if (waveID >= 0 && waveID < LONG(iNumDevs)) {
VariantClear(&var);
// Find the description
hr = pPropBag->Read(L"FriendlyName", &var, 0);
if (!SUCCEEDED(hr))
continue;
QString description = QString::fromWCharArray(var.bstrVal);
// Get the endpoint ID string for this waveOut device. This is required to be able to
// identify the device use the WMF APIs
size_t len = 0;
MMRESULT mmr = waveOutMessage((HWAVEOUT)IntToPtr(waveID),
DRV_QUERYFUNCTIONINSTANCEIDSIZE,
(DWORD_PTR)&len, 0);
if (mmr != MMSYSERR_NOERROR)
continue;
QVarLengthArray<WCHAR> id(len);
mmr = waveOutMessage((HWAVEOUT)IntToPtr(waveID),
DRV_QUERYFUNCTIONINSTANCEID,
(DWORD_PTR)id.data(),
len);
if (mmr != MMSYSERR_NOERROR)
continue;
QByteArray strId = QString::fromWCharArray(id.data()).toUtf8();
devices.append((new QWindowsAudioDeviceInfo(strId, waveID, description, mode))->create());
}
}
pPropBag->Release();
pMoniker->Release();
}
pEnum->Release();
}
pDevEnum->Release();
}
if (SUCCEEDED(hrCoInit))
CoUninitialize();
return devices;
}
QList<QAudioDeviceInfo> QWindowsDeviceManager::audioInputs() const
{
return availableDevices(QAudio::AudioInput);
}
QList<QAudioDeviceInfo> QWindowsDeviceManager::audioOutputs() const
{
return availableDevices(QAudio::AudioOutput);
}
QList<QCameraInfo> QWindowsDeviceManager::videoInputs() const
{
QList<QCameraInfo> cameras;
auto hrCoInit = CoInitialize(nullptr);
IMFAttributes *pAttributes = NULL;
IMFActivate **ppDevices = NULL;
// Create an attribute store to specify the enumeration parameters.
HRESULT hr = MFCreateAttributes(&pAttributes, 1);
if (SUCCEEDED(hr)) {
// Source type: video capture devices
hr = pAttributes->SetGUID(MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID);
if (SUCCEEDED(hr)) {
// Enumerate devices.
UINT32 count;
hr = MFEnumDeviceSources(pAttributes, &ppDevices, &count);
if (SUCCEEDED(hr)) {
// Iterate through devices.
for (int index = 0; index < int(count); index++) {
QCameraInfoPrivate *info = new QCameraInfoPrivate;
IMFMediaSource *pSource = NULL;
IMFSourceReader *reader = NULL;
WCHAR *deviceName = NULL;
UINT32 deviceNameLength = 0;
UINT32 deviceIdLength = 0;
WCHAR *deviceId = NULL;
hr = ppDevices[index]->GetAllocatedString(MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME,
&deviceName, &deviceNameLength);
if (SUCCEEDED(hr))
info->description = QString::fromWCharArray(deviceName);
CoTaskMemFree(deviceName);
hr = ppDevices[index]->GetAllocatedString(
MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK, &deviceId,
&deviceIdLength);
if (SUCCEEDED(hr))
info->id = QString::fromWCharArray(deviceId).toUtf8();
CoTaskMemFree(deviceId);
// Create the media source object.
hr = ppDevices[index]->ActivateObject(
IID_PPV_ARGS(&pSource));
// Create the media source reader.
hr = MFCreateSourceReaderFromMediaSource(pSource, NULL, &reader);
if (SUCCEEDED(hr)) {
QList<QSize> photoResolutions;
QList<QCameraFormat> videoFormats;
DWORD dwMediaTypeIndex = 0;
IMFMediaType *mediaFormat = NULL;
GUID subtype = GUID_NULL;
HRESULT mediaFormatResult = S_OK;
UINT32 frameRateMin = 0u;
UINT32 frameRateMax = 0u;
UINT32 denominator = 0u;
DWORD index = 0u;
UINT32 width = 0u;
UINT32 height = 0u;
while (SUCCEEDED(mediaFormatResult)) {
// Loop through the supported formats for the video device
mediaFormatResult = reader->GetNativeMediaType(
(DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM, dwMediaTypeIndex,
&mediaFormat);
if (mediaFormatResult == MF_E_NO_MORE_TYPES)
break;
else if (SUCCEEDED(mediaFormatResult)) {
QVideoFrame::PixelFormat pixelFormat = QVideoFrame::Format_Invalid;
QSize resolution;
float minFr = .0;
float maxFr = .0;
if (SUCCEEDED(mediaFormat->GetGUID(MF_MT_SUBTYPE, &subtype)))
pixelFormat = MFTransform::formatFromSubtype(subtype);
if (SUCCEEDED(MFGetAttributeSize(mediaFormat, MF_MT_FRAME_SIZE, &width,
&height))) {
resolution.rheight() = (int)height;
resolution.rwidth() = (int)width;
photoResolutions << resolution;
}
if (SUCCEEDED(MFGetAttributeRatio(mediaFormat, MF_MT_FRAME_RATE_RANGE_MIN,
&frameRateMin, &denominator)))
minFr = qreal(frameRateMin) / denominator;
if (SUCCEEDED(MFGetAttributeRatio(mediaFormat, MF_MT_FRAME_RATE_RANGE_MAX,
&frameRateMax, &denominator)))
maxFr = qreal(frameRateMax) / denominator;
auto *f = new QCameraFormatPrivate { QSharedData(), pixelFormat,
resolution, minFr, maxFr };
videoFormats << f->create();
}
++dwMediaTypeIndex;
}
if (mediaFormat)
mediaFormat->Release();
info->videoFormats = videoFormats;
info->photoResolutions = photoResolutions;
}
if (reader)
reader->Release();
cameras.append(info->create());
}
}
for (DWORD i = 0; i < count; i++) {
if (ppDevices[i])
ppDevices[i]->Release();
}
CoTaskMemFree(ppDevices);
}
}
if (pAttributes)
pAttributes->Release();
if (SUCCEEDED(hrCoInit))
CoUninitialize();
return cameras;
}
QAbstractAudioInput *QWindowsDeviceManager::createAudioInputDevice(const QAudioDeviceInfo &deviceInfo)
{
const auto *devInfo = static_cast<const QWindowsAudioDeviceInfo *>(deviceInfo.handle());
return new QWindowsAudioInput(devInfo->waveId());
}
QAbstractAudioOutput *QWindowsDeviceManager::createAudioOutputDevice(const QAudioDeviceInfo &deviceInfo)
{
const auto *devInfo = static_cast<const QWindowsAudioDeviceInfo *>(deviceInfo.handle());
return new QWindowsAudioOutput(devInfo->waveId());
}
QT_END_NAMESPACE
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