Merge QPlatformCameraImageProcessing into QPlatformCamera

Clean up the API while wer're at it, and rename
manualWhiteBalance to colorTemperature.

Simplify the backend API now that we only have white
balance and color temperature in there.

Change-Id: Ied8702b0c68a8fbea08d314d96c0261049db5b4d
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 0 insertions, 312 deletions

diff --git a/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp b/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp
deleted file mode 100644
index 8a692b866..000000000
--- a/src/multimedia/platform/gstreamer/mediacapture/qgstreamercameraimageprocessing.cpp
+++ /dev/null
@@ -1,312 +0,0 @@
-/****************************************************************************
-**
-** 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