diff options
Diffstat (limited to 'src/plugins/avfoundation/camera/avfimagecapturecontrol.mm')
| -rw-r--r-- | src/plugins/avfoundation/camera/avfimagecapturecontrol.mm | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/src/plugins/avfoundation/camera/avfimagecapturecontrol.mm b/src/plugins/avfoundation/camera/avfimagecapturecontrol.mm deleted file mode 100644 index f2c019fdc..000000000 --- a/src/plugins/avfoundation/camera/avfimagecapturecontrol.mm +++ /dev/null @@ -1,266 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies). -** 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 "avfcameradebug.h" -#include "avfimagecapturecontrol.h" -#include "avfcameraservice.h" -#include "avfcamerautility.h" -#include "avfcameracontrol.h" -#include "avfcapturedestinationcontrol.h" -#include <private/qmemoryvideobuffer_p.h> - -#include <QtCore/qurl.h> -#include <QtCore/qfile.h> -#include <QtCore/qbuffer.h> -#include <QtConcurrent/qtconcurrentrun.h> -#include <QtGui/qimagereader.h> - -QT_USE_NAMESPACE - -AVFImageCaptureControl::AVFImageCaptureControl(AVFCameraService *service, QObject *parent) - : QCameraImageCaptureControl(parent) - , m_service(service) - , m_session(service->session()) - , m_cameraControl(service->cameraControl()) - , m_ready(false) - , m_lastCaptureId(0) - , m_videoConnection(nil) -{ - Q_UNUSED(service); - m_stillImageOutput = [[AVCaptureStillImageOutput alloc] init]; - - NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys: - AVVideoCodecJPEG, AVVideoCodecKey, nil]; - - [m_stillImageOutput setOutputSettings:outputSettings]; - [outputSettings release]; - connect(m_cameraControl, SIGNAL(captureModeChanged(QCamera::CaptureModes)), SLOT(updateReadyStatus())); - connect(m_cameraControl, SIGNAL(statusChanged(QCamera::Status)), SLOT(updateReadyStatus())); - - connect(m_session, SIGNAL(readyToConfigureConnections()), SLOT(updateCaptureConnection())); - connect(m_cameraControl, SIGNAL(captureModeChanged(QCamera::CaptureModes)), SLOT(updateCaptureConnection())); - - connect(m_session, &AVFCameraSession::newViewfinderFrame, - this, &AVFImageCaptureControl::onNewViewfinderFrame, - Qt::DirectConnection); -} - -AVFImageCaptureControl::~AVFImageCaptureControl() -{ -} - -bool AVFImageCaptureControl::isReadyForCapture() const -{ - return m_videoConnection && - m_cameraControl->captureMode().testFlag(QCamera::CaptureStillImage) && - m_cameraControl->status() == QCamera::ActiveStatus; -} - -void AVFImageCaptureControl::updateReadyStatus() -{ - if (m_ready != isReadyForCapture()) { - m_ready = !m_ready; - qDebugCamera() << "ReadyToCapture status changed:" << m_ready; - Q_EMIT readyForCaptureChanged(m_ready); - } -} - -int AVFImageCaptureControl::capture(const QString &fileName) -{ - m_lastCaptureId++; - - if (!isReadyForCapture()) { - QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection, - Q_ARG(int, m_lastCaptureId), - Q_ARG(int, QCameraImageCapture::NotReadyError), - Q_ARG(QString, tr("Camera not ready"))); - return m_lastCaptureId; - } - - auto destination = m_service->captureDestinationControl()->captureDestination(); - QString actualFileName; - if (destination & QCameraImageCapture::CaptureToFile) { - actualFileName = m_storageLocation.generateFileName(fileName, - QCamera::CaptureStillImage, - QLatin1String("img_"), - QLatin1String("jpg")); - - qDebugCamera() << "Capture image to" << actualFileName; - } - - CaptureRequest request = { m_lastCaptureId, QSharedPointer<QSemaphore>::create()}; - m_requestsMutex.lock(); - m_captureRequests.enqueue(request); - m_requestsMutex.unlock(); - - [m_stillImageOutput captureStillImageAsynchronouslyFromConnection:m_videoConnection - completionHandler: ^(CMSampleBufferRef imageSampleBuffer, NSError *error) { - - if (error) { - QStringList messageParts; - messageParts << QString::fromUtf8([[error localizedDescription] UTF8String]); - messageParts << QString::fromUtf8([[error localizedFailureReason] UTF8String]); - messageParts << QString::fromUtf8([[error localizedRecoverySuggestion] UTF8String]); - - QString errorMessage = messageParts.join(" "); - qDebugCamera() << "Image capture failed:" << errorMessage; - - QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(int, QCameraImageCapture::ResourceError), - Q_ARG(QString, errorMessage)); - return; - } - - // Wait for the preview to be generated before saving the JPEG (but only - // if we have AVFCameraRendererControl attached). - // It is possible to stop camera immediately after trying to capture an - // image; this can result in a blocked callback's thread, waiting for a - // new viewfinder's frame to arrive/semaphore to be released. It is also - // unspecified on which thread this callback gets executed, (probably it's - // not the same thread that initiated a capture and stopped the camera), - // so we cannot reliably check the camera's status. Instead, we wait - // with a timeout and treat a failure to acquire a semaphore as an error. - if (!m_service->videoOutput() || request.previewReady->tryAcquire(1, 1000)) { - qDebugCamera() << "Image capture completed"; - - NSData *nsJpgData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer]; - QByteArray jpgData = QByteArray::fromRawData((const char *)[nsJpgData bytes], [nsJpgData length]); - - if (destination & QCameraImageCapture::CaptureToBuffer) { - QBuffer data(&jpgData); - QImageReader reader(&data, "JPEG"); - QSize size = reader.size(); - QVideoFrame frame(new QMemoryVideoBuffer(QByteArray(jpgData.constData(), jpgData.size()), -1), size, QVideoFrame::Format_Jpeg); - QMetaObject::invokeMethod(this, "imageAvailable", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(QVideoFrame, frame)); - } - - if (!(destination & QCameraImageCapture::CaptureToFile)) - return; - - QFile f(actualFileName); - if (f.open(QFile::WriteOnly)) { - if (f.write(jpgData) != -1) { - QMetaObject::invokeMethod(this, "imageSaved", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(QString, actualFileName)); - } else { - QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(int, QCameraImageCapture::OutOfSpaceError), - Q_ARG(QString, f.errorString())); - } - } else { - QString errorMessage = tr("Could not open destination file:\n%1").arg(actualFileName); - QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(int, QCameraImageCapture::ResourceError), - Q_ARG(QString, errorMessage)); - } - } else { - const QLatin1String errorMessage("Image capture failed: timed out waiting" - " for a preview frame."); - qDebugCamera() << errorMessage; - QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection, - Q_ARG(int, request.captureId), - Q_ARG(int, QCameraImageCapture::ResourceError), - Q_ARG(QString, errorMessage)); - } - }]; - - return request.captureId; -} - -void AVFImageCaptureControl::onNewViewfinderFrame(const QVideoFrame &frame) -{ - QMutexLocker locker(&m_requestsMutex); - - if (m_captureRequests.isEmpty()) - return; - - CaptureRequest request = m_captureRequests.dequeue(); - Q_EMIT imageExposed(request.captureId); - - QtConcurrent::run(&AVFImageCaptureControl::makeCapturePreview, this, - request, - frame, - 0 /* rotation */); -} - -void AVFImageCaptureControl::makeCapturePreview(CaptureRequest request, - const QVideoFrame &frame, - int rotation) -{ - QTransform transform; - transform.rotate(rotation); - - Q_EMIT imageCaptured(request.captureId, frame.image().transformed(transform)); - - request.previewReady->release(); -} - -void AVFImageCaptureControl::cancelCapture() -{ - //not supported -} - -void AVFImageCaptureControl::updateCaptureConnection() -{ - if (m_session->videoCaptureDevice() - && m_cameraControl->captureMode().testFlag(QCamera::CaptureStillImage)) { - qDebugCamera() << Q_FUNC_INFO; - AVCaptureSession *captureSession = m_session->captureSession(); - - if (![captureSession.outputs containsObject:m_stillImageOutput]) { - if ([captureSession canAddOutput:m_stillImageOutput]) { - // Lock the video capture device to make sure the active format is not reset - const AVFConfigurationLock lock(m_session->videoCaptureDevice()); - [captureSession addOutput:m_stillImageOutput]; - m_videoConnection = [m_stillImageOutput connectionWithMediaType:AVMediaTypeVideo]; - updateReadyStatus(); - } - } else { - m_videoConnection = [m_stillImageOutput connectionWithMediaType:AVMediaTypeVideo]; - } - } -} - -#include "moc_avfimagecapturecontrol.cpp" |