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Diffstat (limited to 'src/multimedia/camera/qcameraimagecapture.cpp')
| -rw-r--r-- | src/multimedia/camera/qcameraimagecapture.cpp | 651 |
1 files changed, 0 insertions, 651 deletions
diff --git a/src/multimedia/camera/qcameraimagecapture.cpp b/src/multimedia/camera/qcameraimagecapture.cpp deleted file mode 100644 index 7eb67daed..000000000 --- a/src/multimedia/camera/qcameraimagecapture.cpp +++ /dev/null @@ -1,651 +0,0 @@ -/**************************************************************************** -** -** 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 <qcameraimagecapture.h> -#include <qcameraimagecapturecontrol.h> -#include <qmediaencodersettings.h> -#include <qcameracapturedestinationcontrol.h> -#include <qcameracapturebufferformatcontrol.h> - -#include <qimageencodercontrol.h> -#include "qmediaobject_p.h" -#include <qmediaservice.h> -#include <qcamera.h> -#include <qcameracontrol.h> -#include <QtCore/qdebug.h> -#include <QtCore/qurl.h> -#include <QtCore/qstringlist.h> -#include <QtCore/qmetaobject.h> - -QT_BEGIN_NAMESPACE - -/*! - \class QCameraImageCapture - \inmodule QtMultimedia - \ingroup multimedia - \ingroup multimedia_camera - - - \brief The QCameraImageCapture class is used for the recording of media content. - - The QCameraImageCapture class is a high level images recording class. - It's not intended to be used alone but for accessing the media - recording functions of other media objects, like QCamera. - - \snippet multimedia-snippets/camera.cpp Camera - - \snippet multimedia-snippets/camera.cpp Camera keys - - \sa QCamera -*/ - -/*! - \enum QCameraImageCapture::CaptureDestination - - \value CaptureToFile Capture the image to a file. - \value CaptureToBuffer Capture the image to a buffer for further processing. -*/ - -static void qRegisterCameraImageCaptureMetaTypes() -{ - qRegisterMetaType<QCameraImageCapture::Error>("QCameraImageCapture::Error"); - qRegisterMetaType<QCameraImageCapture::CaptureDestination>("QCameraImageCapture::CaptureDestination"); - qRegisterMetaType<QCameraImageCapture::CaptureDestinations>("QCameraImageCapture::CaptureDestinations"); -} - -Q_CONSTRUCTOR_FUNCTION(qRegisterCameraImageCaptureMetaTypes) - - -class QCameraImageCapturePrivate -{ - Q_DECLARE_NON_CONST_PUBLIC(QCameraImageCapture) -public: - QCameraImageCapturePrivate(); - - QMediaObject *mediaObject; - - QCameraImageCaptureControl *control; - QImageEncoderControl *encoderControl; - QCameraCaptureDestinationControl *captureDestinationControl; - QCameraCaptureBufferFormatControl *bufferFormatControl; - - QCameraImageCapture::Error error; - QString errorString; - - void _q_error(int id, int error, const QString &errorString); - void _q_readyChanged(bool); - void _q_serviceDestroyed(); - - void unsetError() { error = QCameraImageCapture::NoError; errorString.clear(); } - - QCameraImageCapture *q_ptr; -}; - -QCameraImageCapturePrivate::QCameraImageCapturePrivate(): - mediaObject(nullptr), - control(nullptr), - encoderControl(nullptr), - captureDestinationControl(nullptr), - bufferFormatControl(nullptr), - error(QCameraImageCapture::NoError) -{ -} - -void QCameraImageCapturePrivate::_q_error(int id, int error, const QString &errorString) -{ - Q_Q(QCameraImageCapture); - - this->error = QCameraImageCapture::Error(error); - this->errorString = errorString; - - emit q->error(id, this->error, errorString); -} - -void QCameraImageCapturePrivate::_q_readyChanged(bool ready) -{ - Q_Q(QCameraImageCapture); - emit q->readyForCaptureChanged(ready); -} - -void QCameraImageCapturePrivate::_q_serviceDestroyed() -{ - mediaObject = nullptr; - control = nullptr; - encoderControl = nullptr; - captureDestinationControl = nullptr; - bufferFormatControl = nullptr; -} - -/*! - Constructs a media recorder which records the media produced by \a mediaObject. - - The \a parent is passed to QMediaObject. -*/ - -QCameraImageCapture::QCameraImageCapture(QMediaObject *mediaObject, QObject *parent): - QObject(parent), d_ptr(new QCameraImageCapturePrivate) -{ - Q_D(QCameraImageCapture); - - d->q_ptr = this; - - if (mediaObject) - mediaObject->bind(this); -} - -/*! - Destroys images capture object. -*/ - -QCameraImageCapture::~QCameraImageCapture() -{ - Q_D(QCameraImageCapture); - - if (d->mediaObject) - d->mediaObject->unbind(this); - - delete d_ptr; -} - -/*! - \reimp -*/ -QMediaObject *QCameraImageCapture::mediaObject() const -{ - return d_func()->mediaObject; -} - -/*! - \reimp -*/ -bool QCameraImageCapture::setMediaObject(QMediaObject *mediaObject) -{ - Q_D(QCameraImageCapture); - - if (d->mediaObject) { - if (d->control) { - disconnect(d->control, SIGNAL(imageExposed(int)), - this, SIGNAL(imageExposed(int))); - disconnect(d->control, SIGNAL(imageCaptured(int,QImage)), - this, SIGNAL(imageCaptured(int,QImage))); - disconnect(d->control, SIGNAL(imageAvailable(int,QVideoFrame)), - this, SIGNAL(imageAvailable(int,QVideoFrame))); - disconnect(d->control, SIGNAL(imageMetadataAvailable(int,QString,QVariant)), - this, SIGNAL(imageMetadataAvailable(int,QString,QVariant))); - disconnect(d->control, SIGNAL(imageSaved(int,QString)), - this, SIGNAL(imageSaved(int,QString))); - disconnect(d->control, SIGNAL(readyForCaptureChanged(bool)), - this, SLOT(_q_readyChanged(bool))); - disconnect(d->control, SIGNAL(error(int,int,QString)), - this, SLOT(_q_error(int,int,QString))); - - if (d->captureDestinationControl) { - disconnect(d->captureDestinationControl, SIGNAL(captureDestinationChanged(QCameraImageCapture::CaptureDestinations)), - this, SIGNAL(captureDestinationChanged(QCameraImageCapture::CaptureDestinations))); - } - - if (d->bufferFormatControl) { - disconnect(d->bufferFormatControl, SIGNAL(bufferFormatChanged(QVideoFrame::PixelFormat)), - this, SIGNAL(bufferFormatChanged(QVideoFrame::PixelFormat))); - } - - QMediaService *service = d->mediaObject->service(); - service->releaseControl(d->control); - if (d->encoderControl) - service->releaseControl(d->encoderControl); - if (d->captureDestinationControl) - service->releaseControl(d->captureDestinationControl); - if (d->bufferFormatControl) - service->releaseControl(d->bufferFormatControl); - - disconnect(service, SIGNAL(destroyed()), this, SLOT(_q_serviceDestroyed())); - } - } - - d->mediaObject = mediaObject; - - if (d->mediaObject) { - QMediaService *service = mediaObject->service(); - if (service) { - d->control = qobject_cast<QCameraImageCaptureControl*>(service->requestControl(QCameraImageCaptureControl_iid)); - - if (d->control) { - d->encoderControl = qobject_cast<QImageEncoderControl *>(service->requestControl(QImageEncoderControl_iid)); - d->captureDestinationControl = qobject_cast<QCameraCaptureDestinationControl *>( - service->requestControl(QCameraCaptureDestinationControl_iid)); - d->bufferFormatControl = qobject_cast<QCameraCaptureBufferFormatControl *>( - service->requestControl(QCameraCaptureBufferFormatControl_iid)); - - connect(d->control, SIGNAL(imageExposed(int)), - this, SIGNAL(imageExposed(int))); - connect(d->control, SIGNAL(imageCaptured(int,QImage)), - this, SIGNAL(imageCaptured(int,QImage))); - connect(d->control, SIGNAL(imageMetadataAvailable(int,QString,QVariant)), - this, SIGNAL(imageMetadataAvailable(int,QString,QVariant))); - connect(d->control, SIGNAL(imageAvailable(int,QVideoFrame)), - this, SIGNAL(imageAvailable(int,QVideoFrame))); - connect(d->control, SIGNAL(imageSaved(int,QString)), - this, SIGNAL(imageSaved(int,QString))); - connect(d->control, SIGNAL(readyForCaptureChanged(bool)), - this, SLOT(_q_readyChanged(bool))); - connect(d->control, SIGNAL(error(int,int,QString)), - this, SLOT(_q_error(int,int,QString))); - - if (d->captureDestinationControl) { - connect(d->captureDestinationControl, SIGNAL(captureDestinationChanged(QCameraImageCapture::CaptureDestinations)), - this, SIGNAL(captureDestinationChanged(QCameraImageCapture::CaptureDestinations))); - } - - if (d->bufferFormatControl) { - connect(d->bufferFormatControl, SIGNAL(bufferFormatChanged(QVideoFrame::PixelFormat)), - this, SIGNAL(bufferFormatChanged(QVideoFrame::PixelFormat))); - } - - connect(service, SIGNAL(destroyed()), this, SLOT(_q_serviceDestroyed())); - - return true; - } - } - } - - // without QCameraImageCaptureControl discard the media object - d->mediaObject = nullptr; - d->control = nullptr; - d->encoderControl = nullptr; - d->captureDestinationControl = nullptr; - d->bufferFormatControl = nullptr; - - return false; -} - -/*! - Returns true if the images capture service ready to use. -*/ -bool QCameraImageCapture::isAvailable() const -{ - if (d_func()->control != nullptr) - return true; - else - return false; -} - -/*! - Returns the availability of this functionality. -*/ -QMultimedia::AvailabilityStatus QCameraImageCapture::availability() const -{ - if (d_func()->control != nullptr) - return QMultimedia::Available; - else - return QMultimedia::ServiceMissing; -} - -/*! - Returns the current error state. - - \sa errorString() -*/ - -QCameraImageCapture::Error QCameraImageCapture::error() const -{ - return d_func()->error; -} - -/*! - Returns a string describing the current error state. - - \sa error() -*/ - -QString QCameraImageCapture::errorString() const -{ - return d_func()->errorString; -} - - -/*! - Returns a list of supported image codecs. -*/ -QStringList QCameraImageCapture::supportedImageCodecs() const -{ - return d_func()->encoderControl ? - d_func()->encoderControl->supportedImageCodecs() : QStringList(); -} - -/*! - Returns a description of an image \a codec. -*/ -QString QCameraImageCapture::imageCodecDescription(const QString &codec) const -{ - return d_func()->encoderControl ? - d_func()->encoderControl->imageCodecDescription(codec) : QString(); -} - -/*! - Returns a list of resolutions images can be encoded at. - - If non null image \a settings parameter is passed, - the returned list is reduced to resolution supported with partial settings like image codec or quality applied. - - If the encoder supports arbitrary resolutions within the supported range, - *\a continuous is set to true, otherwise *\a continuous is set to false. - - \sa QImageEncoderSettings::resolution() -*/ -QList<QSize> QCameraImageCapture::supportedResolutions(const QImageEncoderSettings &settings, bool *continuous) const -{ - if (continuous) - *continuous = false; - - return d_func()->encoderControl ? - d_func()->encoderControl->supportedResolutions(settings, continuous) : QList<QSize>(); -} - -/*! - Returns the image encoder settings being used. - - \sa setEncodingSettings() -*/ - -QImageEncoderSettings QCameraImageCapture::encodingSettings() const -{ - return d_func()->encoderControl ? - d_func()->encoderControl->imageSettings() : QImageEncoderSettings(); -} - -/*! - Sets the image encoding \a settings. - - If some parameters are not specified, or null settings are passed, - the encoder choose the default encoding parameters. - - \sa encodingSettings() -*/ - -void QCameraImageCapture::setEncodingSettings(const QImageEncoderSettings &settings) -{ - Q_D(QCameraImageCapture); - - if (d->encoderControl) { - QCamera *camera = qobject_cast<QCamera*>(d->mediaObject); - if (camera && camera->captureMode() == QCamera::CaptureStillImage) { - QMetaObject::invokeMethod(camera, - "_q_preparePropertyChange", - Qt::DirectConnection, - Q_ARG(int, QCameraControl::ImageEncodingSettings)); - } - - d->encoderControl->setImageSettings(settings); - } -} - -/*! - Returns the list of supported buffer image capture formats. - - \sa bufferFormat(), setBufferFormat() -*/ -QList<QVideoFrame::PixelFormat> QCameraImageCapture::supportedBufferFormats() const -{ - if (d_func()->bufferFormatControl) - return d_func()->bufferFormatControl->supportedBufferFormats(); - else - return QList<QVideoFrame::PixelFormat>(); -} - -/*! - Returns the buffer image capture format being used. - - \sa supportedBufferFormats(), setBufferFormat() -*/ -QVideoFrame::PixelFormat QCameraImageCapture::bufferFormat() const -{ - if (d_func()->bufferFormatControl) - return d_func()->bufferFormatControl->bufferFormat(); - else - return QVideoFrame::Format_Invalid; -} - -/*! - Sets the buffer image capture \a format to be used. - - \sa bufferFormat(), supportedBufferFormats(), captureDestination() -*/ -void QCameraImageCapture::setBufferFormat(const QVideoFrame::PixelFormat format) -{ - if (d_func()->bufferFormatControl) - d_func()->bufferFormatControl->setBufferFormat(format); -} - -/*! - Returns true if the image capture \a destination is supported; otherwise returns false. - - \sa captureDestination(), setCaptureDestination() -*/ -bool QCameraImageCapture::isCaptureDestinationSupported(QCameraImageCapture::CaptureDestinations destination) const -{ - if (d_func()->captureDestinationControl) - return d_func()->captureDestinationControl->isCaptureDestinationSupported(destination); - else - return destination == CaptureToFile; -} - -/*! - Returns the image capture destination being used. - - \sa isCaptureDestinationSupported(), setCaptureDestination() -*/ -QCameraImageCapture::CaptureDestinations QCameraImageCapture::captureDestination() const -{ - if (d_func()->captureDestinationControl) - return d_func()->captureDestinationControl->captureDestination(); - else - return CaptureToFile; -} - -/*! - Sets the capture \a destination to be used. - - \sa isCaptureDestinationSupported(), captureDestination() -*/ -void QCameraImageCapture::setCaptureDestination(QCameraImageCapture::CaptureDestinations destination) -{ - Q_D(QCameraImageCapture); - - if (d->captureDestinationControl) - d->captureDestinationControl->setCaptureDestination(destination); -} - -/*! - \property QCameraImageCapture::readyForCapture - \brief whether the service is ready to capture a an image immediately. - - Calling capture() while \e readyForCapture is \c false is not permitted and - results in an error. -*/ - -bool QCameraImageCapture::isReadyForCapture() const -{ - if (d_func()->control) - return d_func()->control->isReadyForCapture(); - else - return false; -} - -/*! - \fn QCameraImageCapture::readyForCaptureChanged(bool ready) - - Signals that a camera's \a ready for capture state has changed. -*/ - - -/*! - Capture the image and save it to \a file. - This operation is asynchronous in majority of cases, - followed by signals QCameraImageCapture::imageExposed(), - QCameraImageCapture::imageCaptured(), QCameraImageCapture::imageSaved() - or QCameraImageCapture::error(). - - If an empty \a file is passed, the camera backend choses - the default location and naming scheme for photos on the system, - if only file name without full path is specified, the image will be saved to - the default directory, with a full path reported with imageCaptured() and imageSaved() signals. - - QCamera saves all the capture parameters like exposure settings or - image processing parameters, so changes to camera parameters after - capture() is called do not affect previous capture requests. - - QCameraImageCapture::capture returns the capture Id parameter, used with - imageExposed(), imageCaptured() and imageSaved() signals. - - \sa isReadyForCapture() -*/ -int QCameraImageCapture::capture(const QString &file) -{ - Q_D(QCameraImageCapture); - - d->unsetError(); - - if (d->control) { - return d->control->capture(file); - } else { - d->error = NotSupportedFeatureError; - d->errorString = tr("Device does not support images capture."); - - emit error(-1, d->error, d->errorString); - } - - return -1; -} - -/*! - Cancel incomplete capture requests. - Already captured and queused for proicessing images may be discarded. -*/ -void QCameraImageCapture::cancelCapture() -{ - Q_D(QCameraImageCapture); - - d->unsetError(); - - if (d->control) { - d->control->cancelCapture(); - } else { - d->error = NotSupportedFeatureError; - d->errorString = tr("Device does not support images capture."); - - emit error(-1, d->error, d->errorString); - } -} - - -/*! - \enum QCameraImageCapture::Error - - \value NoError No Errors. - \value NotReadyError The service is not ready for capture yet. - \value ResourceError Device is not ready or not available. - \value OutOfSpaceError No space left on device. - \value NotSupportedFeatureError Device does not support stillimages capture. - \value FormatError Current format is not supported. -*/ - -/*! - \enum QCameraImageCapture::DriveMode - - \value SingleImageCapture Drive mode is capturing a single picture. -*/ - -/*! - \fn QCameraImageCapture::error(int id, QCameraImageCapture::Error error, const QString &errorString) - - Signals that the capture request \a id has failed with an \a error - and \a errorString description. -*/ - -/*! - \fn QCameraImageCapture::bufferFormatChanged(QVideoFrame::PixelFormat format) - - Signal emitted when the buffer \a format for the buffer image capture has changed. -*/ - -/*! - \fn QCameraImageCapture::captureDestinationChanged(CaptureDestinations destination) - - Signal emitted when the capture \a destination has changed. -*/ - -/*! - \fn QCameraImageCapture::imageExposed(int id) - - Signal emitted when the frame with request \a id was exposed. -*/ - -/*! - \fn QCameraImageCapture::imageCaptured(int id, const QImage &preview); - - Signal emitted when QAbstractVideoSurface is used as a viewfinder and - the frame with request \a id was captured, but not processed and saved yet. - Frame \a preview can be displayed to user. -*/ - -/*! - \fn QCameraImageCapture::imageMetadataAvailable(int id, const QString &key, const QVariant &value) - - Signals that a metadata for an image with request \a id is available. Also - includes the \a key and \a value of the metadata. - - This signal is emitted between imageExposed and imageSaved signals. -*/ - -/*! - \fn QCameraImageCapture::imageAvailable(int id, const QVideoFrame &frame) - - Signal emitted when QCameraImageCapture::CaptureToBuffer is set and - the \a frame with request \a id is available. -*/ - -/*! - \fn QCameraImageCapture::imageSaved(int id, const QString &fileName) - - Signal emitted when QCameraImageCapture::CaptureToFile is set and - the frame with request \a id was saved to \a fileName. -*/ - -QT_END_NAMESPACE - -#include "moc_qcameraimagecapture.cpp" |