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diff --git a/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp b/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp
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--- a/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2021 The Qt Company Ltd.
-** Copyright (C) 2016 Denis Shienkov <denis.shienkov@gmail.com>
-** 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 "qgstreamercameraimageprocessing_p.h"
-#include "qgstreamercamera_p.h"
-
-#include <gst/video/colorbalance.h>
-
-#if QT_CONFIG(linux_v4l)
-#include <linux/videodev2.h>
-#include <private/qcore_unix_p.h>
-#endif
-
-QT_BEGIN_NAMESPACE
-
-QGstreamerImageProcessing::QGstreamerImageProcessing(QGstreamerCamera *camera)
- : QPlatformCameraImageProcessing(camera)
- , m_camera(camera)
-{
-#if QT_CONFIG(linux_v4l)
- if (m_camera->isV4L2Camera())
- initV4L2Controls();
-#endif
-#if QT_CONFIG(gstreamer_photography)
- if (auto *photography = m_camera->photography())
- gst_photography_set_white_balance_mode(photography, GST_PHOTOGRAPHY_WB_MODE_AUTO);
-#endif
-}
-
-QGstreamerImageProcessing::~QGstreamerImageProcessing()
-{
-}
-
-bool QGstreamerImageProcessing::setWhiteBalanceMode(QCamera::WhiteBalanceMode mode)
-{
- if (!isWhiteBalanceModeSupported(mode))
- return false;
-#if QT_CONFIG(gstreamer_photography)
- if (auto *photography = m_camera->photography()) {
- GstPhotographyWhiteBalanceMode gstMode = GST_PHOTOGRAPHY_WB_MODE_AUTO;
- switch (mode) {
- case QCamera::WhiteBalanceSunlight:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_DAYLIGHT;
- break;
- case QCamera::WhiteBalanceCloudy:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_CLOUDY;
- break;
- case QCamera::WhiteBalanceShade:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_SHADE;
- break;
- case QCamera::WhiteBalanceSunset:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_SUNSET;
- break;
- case QCamera::WhiteBalanceTungsten:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_TUNGSTEN;
- break;
- case QCamera::WhiteBalanceFluorescent:
- gstMode = GST_PHOTOGRAPHY_WB_MODE_FLUORESCENT;
- break;
- case QCamera::WhiteBalanceAuto:
- default:
- break;
- }
- if (gst_photography_set_white_balance_mode(photography, gstMode)) {
- m_whiteBalanceMode = mode;
- return true;
- }
- }
-#endif
-
- return false;
-}
-
-bool QGstreamerImageProcessing::isWhiteBalanceModeSupported(QCamera::WhiteBalanceMode mode) const
-{
-#if QT_CONFIG(linux_v4l)
- if (m_camera->isV4L2Camera()) {
- if (mode == QCamera::WhiteBalanceAuto)
- return true;
- if (v4l2AutoWhiteBalanceSupported && mode == QCamera::WhiteBalanceManual)
- return true;
- // ### Could emulate the others through hardcoded color temperatures
- return false;
- }
-#endif
-#if QT_CONFIG(gstreamer_photography)
- if (m_camera->photography()) {
- switch (mode) {
- case QCamera::WhiteBalanceAuto:
- case QCamera::WhiteBalanceSunlight:
- case QCamera::WhiteBalanceCloudy:
- case QCamera::WhiteBalanceShade:
- case QCamera::WhiteBalanceSunset:
- case QCamera::WhiteBalanceTungsten:
- case QCamera::WhiteBalanceFluorescent:
- return true;
- default:
- break;
- }
- }
-#endif
-
- return mode == QCamera::WhiteBalanceAuto;
-}
-
-
-bool QGstreamerImageProcessing::isParameterSupported(QPlatformCameraImageProcessing::ProcessingParameter parameter) const
-{
-#if QT_CONFIG(linux_v4l)
- if (m_camera->isV4L2Camera()) {
- switch (parameter) {
- case WhiteBalancePreset:
- return v4l2AutoWhiteBalanceSupported;
- case ColorTemperature:
- return v4l2ColorTemperatureSupported;
- default:
- // v4l2 doesn't have photography
- return false;
- }
- }
-#endif
-
-#if QT_CONFIG(gstreamer_photography)
- if (m_camera->photography()) {
- if (parameter == QPlatformCameraImageProcessing::WhiteBalancePreset)
- return true;
- }
-#endif
-
- return false;
-}
-
-bool QGstreamerImageProcessing::isParameterValueSupported(QPlatformCameraImageProcessing::ProcessingParameter parameter, const QVariant &value) const
-{
- switch (parameter) {
- case ColorTemperature: {
-#if QT_CONFIG(linux_v4l)
- if (m_camera->isV4L2Camera()) {
- int temp = value.toInt();
- return v4l2ColorTemperatureSupported && v4l2MinColorTemp <= temp && temp <= v4l2MaxColorTemp;
- }
-#endif
- return false;
- }
- case WhiteBalancePreset:
- return isWhiteBalanceModeSupported(value.value<QCamera::WhiteBalanceMode>());
- default:
- break;
- }
-
- return false;
-}
-
-void QGstreamerImageProcessing::setParameter(QPlatformCameraImageProcessing::ProcessingParameter parameter, const QVariant &value)
-{
-#if QT_CONFIG(linux_v4l)
- if (m_camera->isV4L2Camera()) {
- if (setV4L2Param(parameter, value))
- return;
- }
-#endif
-
- switch (parameter) {
- case WhiteBalancePreset:
- setWhiteBalanceMode(value.value<QCamera::WhiteBalanceMode>());
- break;
- case QPlatformCameraImageProcessing::ColorTemperature:
- break;
- default:
- break;
- }
-}
-
-void QGstreamerImageProcessing::update()
-{
-#if QT_CONFIG(linux_v4l)
- initV4L2Controls();
-#endif
-}
-
-#if QT_CONFIG(linux_v4l)
-void QGstreamerImageProcessing::initV4L2Controls()
-{
- v4l2AutoWhiteBalanceSupported = false;
- v4l2ColorTemperatureSupported = false;
-
- const QString deviceName = m_camera->v4l2Device();
- if (deviceName.isEmpty())
- return;
- isV4L2Device = true;
-
- const int fd = qt_safe_open(deviceName.toLocal8Bit().constData(), O_RDONLY);
- if (fd == -1) {
- qWarning() << "Unable to open the camera" << deviceName
- << "for read to query the parameter info:" << qt_error_string(errno);
- return;
- }
-
- struct v4l2_queryctrl queryControl;
- ::memset(&queryControl, 0, sizeof(queryControl));
- queryControl.id = V4L2_CID_AUTO_WHITE_BALANCE;
-
- if (::ioctl(fd, VIDIOC_QUERYCTRL, &queryControl) == 0) {
- v4l2AutoWhiteBalanceSupported = true;
- struct v4l2_control control;
- control.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE;
- control.value = true;
- ::ioctl(fd, VIDIOC_S_CTRL, &control);
- }
-
- ::memset(&queryControl, 0, sizeof(queryControl));
- queryControl.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE;
- if (::ioctl(fd, VIDIOC_QUERYCTRL, &queryControl) == 0) {
- v4l2MinColorTemp = queryControl.minimum;
- v4l2MaxColorTemp = queryControl.maximum;
- v4l2CurrentColorTemp = queryControl.default_value;
- v4l2ColorTemperatureSupported = true;
- struct v4l2_control control;
- control.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE;
- control.value = 0;
- if (::ioctl(fd, VIDIOC_G_CTRL, &control) == 0)
- v4l2CurrentColorTemp = control.value;
- }
-
- qt_safe_close(fd);
-
-}
-
-bool QGstreamerImageProcessing::setV4L2Param(ProcessingParameter parameter, const QVariant &value)
-{
- struct v4l2_control control;
- ::memset(&control, 0, sizeof(control));
-
- switch (parameter) {
- case QPlatformCameraImageProcessing::WhiteBalancePreset: {
- if (!v4l2AutoWhiteBalanceSupported)
- return false;
- const QCamera::WhiteBalanceMode mode = value.value<QCamera::WhiteBalanceMode>();
- if (mode != QCamera::WhiteBalanceAuto && mode != QCamera::WhiteBalanceManual)
- return false;
- control.id = V4L2_CID_AUTO_WHITE_BALANCE;
- control.value = (mode == QCamera::WhiteBalanceAuto);
- m_whiteBalanceMode = mode;
- break;
- }
- case QPlatformCameraImageProcessing::ColorTemperature:
- control.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE;
- control.value = qBound(v4l2MinColorTemp, value.toInt(), v4l2MaxColorTemp);
- break;
- default:
- return false;
- }
-
- if (!control.id)
- return false;
-
- const int fd = qt_safe_open(m_camera->v4l2Device().toLocal8Bit().constData(), O_RDONLY);
- if (fd == -1) {
- qWarning() << "Unable to open the camera" << m_camera->v4l2Device()
- << "for read to get the parameter value:" << qt_error_string(errno);
- return false;
- }
-
- if (::ioctl(fd, VIDIOC_S_CTRL, &control) != 0) {
- qWarning() << "Unable to set the parameter value:" << parameter << ":" << qt_error_string(errno);
- return false;
- }
-
- qt_safe_close(fd);
- return true;
-}
-#endif
-
-
-QT_END_NAMESPACE