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Diffstat (limited to 'src/plugins/winrt/qwinrtcameraflashcontrol.cpp')
| -rw-r--r-- | src/plugins/winrt/qwinrtcameraflashcontrol.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/plugins/winrt/qwinrtcameraflashcontrol.cpp b/src/plugins/winrt/qwinrtcameraflashcontrol.cpp new file mode 100644 index 000000000..1ea877672 --- /dev/null +++ b/src/plugins/winrt/qwinrtcameraflashcontrol.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies). +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwinrtcameraflashcontrol.h" +#include "qwinrtcameracontrol.h" +#include <QtCore/QTimer> +#include <QtCore/qfunctions_winrt.h> +#include <QtCore/private/qeventdispatcher_winrt_p.h> + +#include <windows.media.devices.h> +#include <wrl.h> +#include <functional> + +using namespace Microsoft::WRL; +using namespace ABI::Windows::Media::Devices; + +QT_BEGIN_NAMESPACE + +class QWinRTCameraFlashControlPrivate +{ +public: + ComPtr<IFlashControl> flashControl; + + QList<QCameraExposure::FlashModes> supportedModes; + QCameraExposure::FlashModes currentModes; + bool initialized; +}; + +QWinRTCameraFlashControl::QWinRTCameraFlashControl(QWinRTCameraControl *parent) + : QCameraFlashControl(parent), d_ptr(new QWinRTCameraFlashControlPrivate) +{ + qCDebug(lcMMCamera) << __FUNCTION__ << parent; + Q_D(QWinRTCameraFlashControl); + + d->initialized = false; + d->currentModes = QCameraExposure::FlashOff; +} + +void QWinRTCameraFlashControl::initialize(Microsoft::WRL::ComPtr<IAdvancedVideoCaptureDeviceController2> &controller) +{ + qCDebug(lcMMCamera) << __FUNCTION__; + Q_D(QWinRTCameraFlashControl); + + d->initialized = false; + + d->supportedModes.clear(); + HRESULT hr; + hr = QEventDispatcherWinRT::runOnXamlThread([d, controller]() { + HRESULT hr; + hr = controller->get_FlashControl(&d->flashControl); + RETURN_HR_IF_FAILED("Could not access flash control."); + + boolean oldAuto; + boolean oldEnabled; + // IFlashControl::get_Supported() is only valid for additional + // controls (RedEye, etc.) so we have to manually try to set + // and reset flash + if (SUCCEEDED(d->flashControl->get_Auto(&oldAuto))) { + hr = d->flashControl->put_Auto(!oldAuto); + if (SUCCEEDED(hr)) { + d->flashControl->put_Auto(oldAuto); + d->supportedModes.append(QCameraExposure::FlashAuto); + } + } + + if (SUCCEEDED(d->flashControl->get_Enabled(&oldEnabled))) { + hr = d->flashControl->put_Enabled(!oldEnabled); + if (SUCCEEDED(hr)) { + d->flashControl->put_Enabled(oldEnabled); + d->supportedModes.append(QCameraExposure::FlashOff); + d->supportedModes.append(QCameraExposure::FlashOn); + } + } + + boolean val; + hr = d->flashControl->get_Supported(&val); + if (SUCCEEDED(hr) && val) { + hr = d->flashControl->get_RedEyeReductionSupported(&val); + if (SUCCEEDED(hr) && val) + d->supportedModes.append(QCameraExposure::FlashRedEyeReduction); + + // ### There is no Qt API to actually set the power values. + // However query if the camera could theoretically do it + hr = d->flashControl->get_PowerSupported(&val); + if (SUCCEEDED(hr) && val) + d->supportedModes.append(QCameraExposure::FlashManual); + } + + return S_OK; + }); + Q_ASSERT_SUCCEEDED(hr); + d->initialized = true; + setFlashMode(d->currentModes); +} + +QCameraExposure::FlashModes QWinRTCameraFlashControl::flashMode() const +{ + Q_D(const QWinRTCameraFlashControl); + return d->currentModes; +} + +void QWinRTCameraFlashControl::setFlashMode(QCameraExposure::FlashModes mode) +{ + qCDebug(lcMMCamera) << __FUNCTION__ << mode; + Q_D(QWinRTCameraFlashControl); + + if (!d->initialized) { + d->currentModes = mode; + return; + } + + if (!isFlashModeSupported(mode)) + return; + + QEventDispatcherWinRT::runOnXamlThread([d, mode]() { + HRESULT hr; + if (mode.testFlag(QCameraExposure::FlashAuto)) { + hr = d->flashControl->put_Enabled(true); + RETURN_OK_IF_FAILED("Could not set flash mode on."); + hr = d->flashControl->put_Auto(true); + RETURN_OK_IF_FAILED("Could not set flash mode auto."); + d->currentModes = QCameraExposure::FlashAuto; + } else if (mode.testFlag(QCameraExposure::FlashOn)) { + hr = d->flashControl->put_Enabled(true); + RETURN_OK_IF_FAILED("Could not set flash mode on."); + hr = d->flashControl->put_Auto(false); + RETURN_OK_IF_FAILED("Could not disable flash auto mode."); + d->currentModes = QCameraExposure::FlashOn; + } else if (mode.testFlag(QCameraExposure::FlashRedEyeReduction)) { + hr = d->flashControl->put_Enabled(true); + RETURN_OK_IF_FAILED("Could not set flash mode on."); + hr = d->flashControl->put_RedEyeReduction(true); + RETURN_OK_IF_FAILED("Could not set flash mode red eye reduction."); + d->currentModes = QCameraExposure::FlashRedEyeReduction; + } else { + hr = d->flashControl->put_Enabled(false); + RETURN_OK_IF_FAILED("Could not set flash mode off."); + d->currentModes = QCameraExposure::FlashOff; + } + return S_OK; + }); +} + +bool QWinRTCameraFlashControl::isFlashModeSupported(QCameraExposure::FlashModes mode) const +{ + Q_D(const QWinRTCameraFlashControl); + qCDebug(lcMMCamera) << __FUNCTION__ << mode; + return d->initialized ? d->supportedModes.contains(mode) : false; +} + +bool QWinRTCameraFlashControl::isFlashReady() const +{ + qCDebug(lcMMCamera) << __FUNCTION__; + // No native API to query state + return true; +} + +QT_END_NAMESPACE |