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| |
| #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 |