Get rid of plugins for MM backends

There's no need for having those in plugins and we can
further remove abstractions and simplify our code if
the code is directly compiled into Qt Multimedia.

Change-Id: I5267a6a776375d99be8f0de4207f0288d963e620
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 383 insertions, 0 deletions

diff --git a/src/multimedia/platform/android/mediacapture/qandroidcamerafocuscontrol.cpp b/src/multimedia/platform/android/mediacapture/qandroidcamerafocuscontrol.cpp
new file mode 100644
index 000000000..0fa9b055a
--- /dev/null
+++ b/src/multimedia/platform/android/mediacapture/qandroidcamerafocuscontrol.cpp
@@ -0,0 +1,383 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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 "qandroidcamerafocuscontrol_p.h"
+
+#include "qandroidcamerasession_p.h"
+#include "androidcamera_p.h"
+
+#include "qandroidmultimediautils_p.h"
+#include <qmath.h>
+
+QT_BEGIN_NAMESPACE
+
+static QRect adjustedArea(const QRectF &area)
+{
+    // Qt maps focus points in the range (0.0, 0.0) -> (1.0, 1.0)
+    // Android maps focus points in the range (-1000, -1000) -> (1000, 1000)
+    // Converts an area in Qt coordinates to Android coordinates
+    return QRect(-1000 + qRound(area.x() * 2000),
+                 -1000 + qRound(area.y() * 2000),
+                 qRound(area.width() * 2000),
+                 qRound(area.height() * 2000))
+            .intersected(QRect(-1000, -1000, 2000, 2000));
+}
+
+QAndroidCameraFocusControl::QAndroidCameraFocusControl(QAndroidCameraSession *session)
+    : QCameraFocusControl()
+    , m_session(session)
+    , m_focusMode(QCameraFocus::AutoFocus)
+    , m_focusPointMode(QCameraFocus::FocusPointAuto)
+    , m_actualFocusPoint(0.5, 0.5)
+    , m_continuousPictureFocusSupported(false)
+    , m_continuousVideoFocusSupported(false)
+{
+    connect(m_session, SIGNAL(opened()),
+            this, SLOT(onCameraOpened()));
+    connect(m_session, SIGNAL(captureModeChanged(QCamera::CaptureModes)),
+            this, SLOT(onCameraCaptureModeChanged()));
+}
+
+QCameraFocus::FocusModes QAndroidCameraFocusControl::focusMode() const
+{
+    return m_focusMode;
+}
+
+void QAndroidCameraFocusControl::setFocusMode(QCameraFocus::FocusModes mode)
+{
+    if (!m_session->camera()) {
+        setFocusModeHelper(mode);
+        return;
+    }
+
+    if (isFocusModeSupported(mode)) {
+        QString focusMode = QLatin1String("fixed");
+
+        if (mode.testFlag(QCameraFocus::HyperfocalFocus)) {
+            focusMode = QLatin1String("edof");
+        } else if (mode.testFlag(QCameraFocus::ManualFocus)) {
+            focusMode = QLatin1String("fixed");
+        } else if (mode.testFlag(QCameraFocus::AutoFocus)) {
+            focusMode = QLatin1String("auto");
+        } else if (mode.testFlag(QCameraFocus::MacroFocus)) {
+            focusMode = QLatin1String("macro");
+        } else if (mode.testFlag(QCameraFocus::ContinuousFocus)) {
+            if ((m_session->captureMode().testFlag(QCamera::CaptureVideo) && m_continuousVideoFocusSupported)
+                    || !m_continuousPictureFocusSupported) {
+                focusMode = QLatin1String("continuous-video");
+            } else {
+                focusMode = QLatin1String("continuous-picture");
+            }
+        } else if (mode.testFlag(QCameraFocus::InfinityFocus)) {
+            focusMode = QLatin1String("infinity");
+        }
+
+        m_session->camera()->setFocusMode(focusMode);
+
+        // reset focus position
+        m_session->camera()->cancelAutoFocus();
+
+        setFocusModeHelper(mode);
+    }
+}
+
+bool QAndroidCameraFocusControl::isFocusModeSupported(QCameraFocus::FocusModes mode) const
+{
+    return m_session->camera() ? m_supportedFocusModes.contains(mode) : false;
+}
+
+QCameraFocus::FocusPointMode QAndroidCameraFocusControl::focusPointMode() const
+{
+    return m_focusPointMode;
+}
+
+void QAndroidCameraFocusControl::setFocusPointMode(QCameraFocus::FocusPointMode mode)
+{
+    if (!m_session->camera()) {
+        setFocusPointModeHelper(mode);
+        return;
+    }
+
+    if (isFocusPointModeSupported(mode)) {
+        if (mode == QCameraFocus::FocusPointCustom) {
+            m_actualFocusPoint = m_customFocusPoint;
+        } else {
+            // FocusPointAuto | FocusPointCenter
+            // note: there is no way to know the actual focus point in FocusPointAuto mode,
+            // so just report the focus point to be at the center of the frame
+            m_actualFocusPoint = QPointF(0.5, 0.5);
+        }
+
+        setFocusPointModeHelper(mode);
+
+        updateFocusZones();
+        setCameraFocusArea();
+    }
+}
+
+bool QAndroidCameraFocusControl::isFocusPointModeSupported(QCameraFocus::FocusPointMode mode) const
+{
+    return m_session->camera() ? m_supportedFocusPointModes.contains(mode) : false;
+}
+
+QPointF QAndroidCameraFocusControl::customFocusPoint() const
+{
+    return m_customFocusPoint;
+}
+
+void QAndroidCameraFocusControl::setCustomFocusPoint(const QPointF &point)
+{
+    if (m_customFocusPoint != point) {
+        m_customFocusPoint = point;
+        emit customFocusPointChanged(m_customFocusPoint);
+    }
+
+    if (m_session->camera() && m_focusPointMode == QCameraFocus::FocusPointCustom) {
+        m_actualFocusPoint = m_customFocusPoint;
+        updateFocusZones();
+        setCameraFocusArea();
+    }
+}
+
+QCameraFocusZoneList QAndroidCameraFocusControl::focusZones() const
+{
+    return m_focusZones;
+}
+
+void QAndroidCameraFocusControl::onCameraOpened()
+{
+    connect(m_session->camera(), SIGNAL(previewSizeChanged()),
+            this, SLOT(onViewportSizeChanged()));
+    connect(m_session->camera(), SIGNAL(autoFocusStarted()),
+            this, SLOT(onAutoFocusStarted()));
+    connect(m_session->camera(), SIGNAL(autoFocusComplete(bool)),
+            this, SLOT(onAutoFocusComplete(bool)));
+
+    m_supportedFocusModes.clear();
+    m_continuousPictureFocusSupported = false;
+    m_continuousVideoFocusSupported = false;
+    m_supportedFocusPointModes.clear();
+
+    QStringList focusModes = m_session->camera()->getSupportedFocusModes();
+    for (int i = 0; i < focusModes.size(); ++i) {
+        const QString &focusMode = focusModes.at(i);
+        if (focusMode == QLatin1String("auto")) {
+            m_supportedFocusModes << QCameraFocus::AutoFocus;
+        } else if (focusMode == QLatin1String("continuous-picture")) {
+            m_supportedFocusModes << QCameraFocus::ContinuousFocus;
+            m_continuousPictureFocusSupported = true;
+        } else if (focusMode == QLatin1String("continuous-video")) {
+            m_supportedFocusModes << QCameraFocus::ContinuousFocus;
+            m_continuousVideoFocusSupported = true;
+        } else if (focusMode == QLatin1String("edof")) {
+            m_supportedFocusModes << QCameraFocus::HyperfocalFocus;
+        } else if (focusMode == QLatin1String("fixed")) {
+            m_supportedFocusModes << QCameraFocus::ManualFocus;
+        } else if (focusMode == QLatin1String("infinity")) {
+            m_supportedFocusModes << QCameraFocus::InfinityFocus;
+        } else if (focusMode == QLatin1String("macro")) {
+            m_supportedFocusModes << QCameraFocus::MacroFocus;
+        }
+    }
+
+    m_supportedFocusPointModes << QCameraFocus::FocusPointAuto;
+    if (m_session->camera()->getMaxNumFocusAreas() > 0)
+        m_supportedFocusPointModes << QCameraFocus::FocusPointCenter << QCameraFocus::FocusPointCustom;
+
+    if (!m_supportedFocusModes.contains(m_focusMode))
+        setFocusModeHelper(QCameraFocus::AutoFocus);
+    if (!m_supportedFocusPointModes.contains(m_focusPointMode))
+        setFocusPointModeHelper(QCameraFocus::FocusPointAuto);
+
+    setFocusMode(m_focusMode);
+    setCustomFocusPoint(m_customFocusPoint);
+    setFocusPointMode(m_focusPointMode);
+
+    if (m_session->camera()->isZoomSupported()) {
+        m_zoomRatios = m_session->camera()->getZoomRatios();
+        qreal maxZoom = m_zoomRatios.last() / qreal(100);
+        if (m_maximumZoom != maxZoom) {
+            m_maximumZoom = maxZoom;
+            emit maximumDigitalZoomChanged(m_maximumZoom);
+        }
+        zoomTo(1, m_requestedZoom);
+    } else {
+        m_zoomRatios.clear();
+        if (!qFuzzyCompare(m_maximumZoom, qreal(1))) {
+            m_maximumZoom = 1.0;
+            emit maximumDigitalZoomChanged(m_maximumZoom);
+        }
+    }
+}
+
+void QAndroidCameraFocusControl::updateFocusZones(QCameraFocusZone::FocusZoneStatus status)
+{
+    if (!m_session->camera())
+        return;
+
+    // create a focus zone (50x50 pixel) around the focus point
+    m_focusZones.clear();
+
+    if (!m_actualFocusPoint.isNull()) {
+        QSize viewportSize = m_session->camera()->previewSize();
+
+        if (!viewportSize.isValid())
+            return;
+
+        QSizeF focusSize(50.f / viewportSize.width(), 50.f / viewportSize.height());
+        float x = qBound(qreal(0),
+                         m_actualFocusPoint.x() - (focusSize.width() / 2),
+                         1.f - focusSize.width());
+        float y = qBound(qreal(0),
+                         m_actualFocusPoint.y() - (focusSize.height() / 2),
+                         1.f - focusSize.height());
+
+        QRectF area(QPointF(x, y), focusSize);
+
+        m_focusZones.append(QCameraFocusZone(area, status));
+    }
+
+    emit focusZonesChanged();
+}
+
+void QAndroidCameraFocusControl::setCameraFocusArea()
+{
+    QList<QRect> areas;
+    if (m_focusPointMode != QCameraFocus::FocusPointAuto) {
+        // in FocusPointAuto mode, leave the area list empty
+        // to let the driver choose the focus point.
+
+        for (int i = 0; i < m_focusZones.size(); ++i)
+            areas.append(adjustedArea(m_focusZones.at(i).area()));
+
+    }
+    m_session->camera()->setFocusAreas(areas);
+}
+
+void QAndroidCameraFocusControl::onViewportSizeChanged()
+{
+    QCameraFocusZone::FocusZoneStatus status = QCameraFocusZone::Selected;
+    if (!m_focusZones.isEmpty())
+        status = m_focusZones.at(0).status();
+    updateFocusZones(status);
+    setCameraFocusArea();
+}
+
+void QAndroidCameraFocusControl::onCameraCaptureModeChanged()
+{
+    if (m_session->camera() && m_focusMode == QCameraFocus::ContinuousFocus) {
+        QString focusMode;
+        if ((m_session->captureMode().testFlag(QCamera::CaptureVideo) && m_continuousVideoFocusSupported)
+                || !m_continuousPictureFocusSupported) {
+            focusMode = QLatin1String("continuous-video");
+        } else {
+            focusMode = QLatin1String("continuous-picture");
+        }
+        m_session->camera()->setFocusMode(focusMode);
+        m_session->camera()->cancelAutoFocus();
+    }
+}
+
+void QAndroidCameraFocusControl::onAutoFocusStarted()
+{
+    updateFocusZones(QCameraFocusZone::Selected);
+}
+
+void QAndroidCameraFocusControl::onAutoFocusComplete(bool success)
+{
+    if (success)
+        updateFocusZones(QCameraFocusZone::Focused);
+}
+
+
+qreal QAndroidCameraFocusControl::maximumOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraFocusControl::maximumDigitalZoom() const
+{
+    return m_maximumZoom;
+}
+
+qreal QAndroidCameraFocusControl::requestedOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraFocusControl::requestedDigitalZoom() const
+{
+    return m_requestedZoom;
+}
+
+qreal QAndroidCameraFocusControl::currentOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraFocusControl::currentDigitalZoom() const
+{
+    return m_currentZoom;
+}
+
+void QAndroidCameraFocusControl::zoomTo(qreal optical, qreal digital)
+{
+    Q_UNUSED(optical);
+
+    if (!qFuzzyCompare(m_requestedZoom, digital)) {
+        m_requestedZoom = digital;
+        emit requestedDigitalZoomChanged(m_requestedZoom);
+    }
+
+    if (m_session->camera()) {
+        digital = qBound(qreal(1), digital, m_maximumZoom);
+        int validZoomIndex = qt_findClosestValue(m_zoomRatios, qRound(digital * 100));
+        qreal newZoom = m_zoomRatios.at(validZoomIndex) / qreal(100);
+        if (!qFuzzyCompare(m_currentZoom, newZoom)) {
+            m_session->camera()->setZoom(validZoomIndex);
+            m_currentZoom = newZoom;
+            emit currentDigitalZoomChanged(m_currentZoom);
+        }
+    }
+}
+
+QT_END_NAMESPACE