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/****************************************************************************
**
** 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 <QtMultimedia/private/qtmultimediaglobal_p.h>
#include "camerabincontrol.h"
#include "camerabinimageencoder.h"
#include "camerabinfocus.h"
#include "camerabinimageprocessing.h"
#include <qcamerainfo.h>
#include <QtCore/qdebug.h>
#include <QtCore/qfile.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qcoreevent.h>
QT_BEGIN_NAMESPACE
//#define CAMEABIN_DEBUG 1
#define ENUM_NAME(c,e,v) (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(e)).valueToKey((v)))
CameraBinControl::CameraBinControl(CameraBinSession *session)
:QCameraControl(session),
m_session(session),
m_state(QCamera::UnloadedState),
m_reloadPending(false),
m_focus(m_session->cameraFocusControl())
{
connect(m_session, SIGNAL(statusChanged(QCamera::Status)),
this, SIGNAL(statusChanged(QCamera::Status)));
connect(m_session, SIGNAL(viewfinderChanged()),
SLOT(reloadLater()));
connect(m_session, SIGNAL(readyChanged(bool)),
SLOT(reloadLater()));
connect(m_session, SIGNAL(error(int,QString)),
SLOT(handleCameraError(int,QString)));
connect(m_session, SIGNAL(busyChanged(bool)),
SLOT(handleBusyChanged(bool)));
connect(m_focus, SIGNAL(_q_focusStatusChanged(QCamera::LockStatus,QCamera::LockChangeReason)),
this, SLOT(updateFocusStatus(QCamera::LockStatus,QCamera::LockChangeReason)));
}
CameraBinControl::~CameraBinControl()
{
}
QCamera::CaptureModes CameraBinControl::captureMode() const
{
return m_session->captureMode();
}
void CameraBinControl::setCaptureMode(QCamera::CaptureModes mode)
{
if (m_session->captureMode() != mode) {
m_session->setCaptureMode(mode);
emit captureModeChanged(mode);
}
}
bool CameraBinControl::isCaptureModeSupported(QCamera::CaptureModes mode) const
{
return mode == QCamera::CaptureStillImage || mode == QCamera::CaptureVideo;
}
void CameraBinControl::setState(QCamera::State state)
{
#ifdef CAMEABIN_DEBUG
qDebug() << Q_FUNC_INFO << ENUM_NAME(QCamera, "State", state);
#endif
if (m_state != state) {
m_state = state;
//special case for stopping the camera while it's busy,
//it should be delayed until the camera is idle
if ((state == QCamera::LoadedState || state == QCamera::UnloadedState) &&
m_session->status() == QCamera::ActiveStatus &&
m_session->isBusy()) {
#ifdef CAMEABIN_DEBUG
qDebug() << Q_FUNC_INFO << "Camera is busy,"
<< state == QCamera::LoadedState ? "QCamera::stop()" : "QCamera::unload()"
<< "is delayed";
#endif
emit stateChanged(m_state);
return;
}
//postpone changing to Active if the session is nor ready yet
if (state == QCamera::ActiveState) {
if (m_session->isReady()) {
m_session->setState(state);
} else {
#ifdef CAMEABIN_DEBUG
qDebug() << "Camera session is not ready yet, postpone activating";
#endif
}
} else
m_session->setState(state);
emit stateChanged(m_state);
}
}
QCamera::State CameraBinControl::state() const
{
return m_state;
}
QCamera::Status CameraBinControl::status() const
{
return m_session->status();
}
void CameraBinControl::setCamera(const QCameraInfo &camera)
{
m_session->setDevice(camera.id());
}
void CameraBinControl::reloadLater()
{
#ifdef CAMEABIN_DEBUG
qDebug() << "CameraBinControl: reload pipeline requested" << ENUM_NAME(QCamera, "State", m_state);
#endif
if (!m_reloadPending && m_state == QCamera::ActiveState) {
m_reloadPending = true;
if (!m_session->isBusy()) {
m_session->setState(QCamera::LoadedState);
QMetaObject::invokeMethod(this, "delayedReload", Qt::QueuedConnection);
}
}
}
void CameraBinControl::handleBusyChanged(bool busy)
{
if (!busy && m_session->status() == QCamera::ActiveStatus) {
if (m_state != QCamera::ActiveState) {
m_session->setState(m_state);
} else if (m_reloadPending) {
//handle delayed reload because of busy camera
m_session->setState(QCamera::LoadedState);
QMetaObject::invokeMethod(this, "delayedReload", Qt::QueuedConnection);
}
}
}
void CameraBinControl::handleCameraError(int errorCode, const QString &errorString)
{
emit error(errorCode, errorString);
setState(QCamera::UnloadedState);
}
void CameraBinControl::delayedReload()
{
#ifdef CAMEABIN_DEBUG
qDebug() << "CameraBinControl: reload pipeline";
#endif
if (m_reloadPending) {
m_reloadPending = false;
if (m_state == QCamera::ActiveState && m_session->isReady())
m_session->setState(QCamera::ActiveState);
}
}
bool CameraBinControl::canChangeProperty(PropertyChangeType changeType, QCamera::Status status) const
{
Q_UNUSED(status);
switch (changeType) {
case QCameraControl::Viewfinder:
return true;
case QCameraControl::CaptureMode:
case QCameraControl::ImageEncodingSettings:
case QCameraControl::VideoEncodingSettings:
default:
return status != QCamera::ActiveStatus;
}
}
#define VIEWFINDER_COLORSPACE_CONVERSION 0x00000004
bool CameraBinControl::viewfinderColorSpaceConversion() const
{
gint flags = 0;
g_object_get(G_OBJECT(m_session->cameraBin()), "flags", &flags, NULL);
return flags & VIEWFINDER_COLORSPACE_CONVERSION;
}
void CameraBinControl::setViewfinderColorSpaceConversion(bool enabled)
{
gint flags = 0;
g_object_get(G_OBJECT(m_session->cameraBin()), "flags", &flags, NULL);
if (enabled)
flags |= VIEWFINDER_COLORSPACE_CONVERSION;
else
flags &= ~VIEWFINDER_COLORSPACE_CONVERSION;
g_object_set(G_OBJECT(m_session->cameraBin()), "flags", flags, NULL);
}
QT_END_NAMESPACE
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