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Diffstat (limited to 'src/plugins/avfoundation/camera/avfimageencodercontrol.mm')
| -rw-r--r-- | src/plugins/avfoundation/camera/avfimageencodercontrol.mm | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/src/plugins/avfoundation/camera/avfimageencodercontrol.mm b/src/plugins/avfoundation/camera/avfimageencodercontrol.mm new file mode 100644 index 000000000..36050c3a2 --- /dev/null +++ b/src/plugins/avfoundation/camera/avfimageencodercontrol.mm @@ -0,0 +1,261 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "avfcameraviewfindersettingscontrol.h" +#include "avfimageencodercontrol.h" +#include "avfimagecapturecontrol.h" +#include "avfcamerautility.h" +#include "avfcamerasession.h" +#include "avfcameraservice.h" +#include "avfcameradebug.h" + +#include <QtMultimedia/qmediaencodersettings.h> + +#include <QtCore/qsysinfo.h> +#include <QtCore/qdebug.h> + +#include <AVFoundation/AVFoundation.h> + +QT_BEGIN_NAMESPACE + +AVFImageEncoderControl::AVFImageEncoderControl(AVFCameraService *service) + : m_service(service) +{ + Q_ASSERT(service); +} + +QStringList AVFImageEncoderControl::supportedImageCodecs() const +{ + return QStringList() << QLatin1String("jpeg"); +} + +QString AVFImageEncoderControl::imageCodecDescription(const QString &codecName) const +{ + if (codecName == QLatin1String("jpeg")) + return tr("JPEG image"); + + return QString(); +} + +QList<QSize> AVFImageEncoderControl::supportedResolutions(const QImageEncoderSettings &settings, + bool *continuous) const +{ + Q_UNUSED(settings) + + QList<QSize> resolutions; + + if (!videoCaptureDeviceIsValid()) + return resolutions; + +#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_7, __IPHONE_7_0) + if (QSysInfo::MacintoshVersion >= qt_OS_limit(QSysInfo::MV_10_7, QSysInfo::MV_IOS_7_0)) { + AVCaptureDevice *captureDevice = m_service->session()->videoCaptureDevice(); + const QVector<AVCaptureDeviceFormat *> formats(qt_unique_device_formats(captureDevice, + m_service->session()->defaultCodec())); + + for (int i = 0; i < formats.size(); ++i) { + AVCaptureDeviceFormat *format = formats[i]; + + const QSize res(qt_device_format_resolution(format)); + if (!res.isNull() && res.isValid()) + resolutions << res; +#if defined(Q_OS_IOS) && QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_8_0) + if (QSysInfo::MacintoshVersion >= QSysInfo::MV_IOS_8_0) { + // From Apple's docs (iOS): + // By default, AVCaptureStillImageOutput emits images with the same dimensions as + // its source AVCaptureDevice instance’s activeFormat.formatDescription. However, + // if you set this property to YES, the receiver emits still images at the capture + // device’s highResolutionStillImageDimensions value. + const QSize hrRes(qt_device_format_high_resolution(format)); + if (!hrRes.isNull() && hrRes.isValid()) + resolutions << res; + } +#endif + } + } else { +#else + { +#endif + // TODO: resolutions without AVCaptureDeviceFormat ... + } + + if (continuous) + *continuous = false; + + return resolutions; +} + +QImageEncoderSettings AVFImageEncoderControl::imageSettings() const +{ + QImageEncoderSettings settings; + + if (!videoCaptureDeviceIsValid()) + return settings; + +#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_7, __IPHONE_7_0) + if (QSysInfo::MacintoshVersion >= qt_OS_limit(QSysInfo::MV_10_7, QSysInfo::MV_IOS_7_0)) { + AVCaptureDevice *captureDevice = m_service->session()->videoCaptureDevice(); + if (!captureDevice.activeFormat) { + qDebugCamera() << Q_FUNC_INFO << "no active format"; + return settings; + } + + QSize res(qt_device_format_resolution(captureDevice.activeFormat)); +#if defined(Q_OS_IOS) && QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_8_0) + if (QSysInfo::MacintoshVersion >= QSysInfo::MV_IOS_8_0) { + if (!m_service->imageCaptureControl() || !m_service->imageCaptureControl()->stillImageOutput()) { + qDebugCamera() << Q_FUNC_INFO << "no still image output"; + return settings; + } + + AVCaptureStillImageOutput *stillImageOutput = m_service->imageCaptureControl()->stillImageOutput(); + if (stillImageOutput.highResolutionStillImageOutputEnabled) + res = qt_device_format_high_resolution(captureDevice.activeFormat); + } +#endif + if (res.isNull() || !res.isValid()) { + qDebugCamera() << Q_FUNC_INFO << "failed to exctract the image resolution"; + return settings; + } + + settings.setResolution(res); + } else { +#else + { +#endif + // TODO: resolution without AVCaptureDeviceFormat. + } + + settings.setCodec(QLatin1String("jpeg")); + + return settings; +} + +void AVFImageEncoderControl::setImageSettings(const QImageEncoderSettings &settings) +{ + if (m_settings == settings || settings.isNull()) + return; + + m_settings = settings; + applySettings(); +} + +void AVFImageEncoderControl::applySettings() +{ + if (!videoCaptureDeviceIsValid()) + return; + + AVFCameraSession *session = m_service->session(); + if (!session || (session->state() != QCamera::ActiveState + && session->state() != QCamera::LoadedState)) { + return; + } + + if (!m_service->imageCaptureControl() + || !m_service->imageCaptureControl()->stillImageOutput()) { + qDebugCamera() << Q_FUNC_INFO << "no still image output"; + return; + } + + if (m_settings.codec().size() + && m_settings.codec() != QLatin1String("jpeg")) { + qDebugCamera() << Q_FUNC_INFO << "unsupported codec:" << m_settings.codec(); + return; + } + + QSize res(m_settings.resolution()); + if (res.isNull()) { + qDebugCamera() << Q_FUNC_INFO << "invalid resolution:" << res; + return; + } + + if (!res.isValid()) { + // Invalid == default value. + // Here we could choose the best format available, but + // activeFormat is already equal to 'preset high' by default, + // which is good enough, otherwise we can end in some format with low framerates. + return; + } + +#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_7, __IPHONE_7_0) + if (QSysInfo::MacintoshVersion >= qt_OS_limit(QSysInfo::MV_10_7, QSysInfo::MV_IOS_7_0)) { + AVCaptureDevice *captureDevice = m_service->session()->videoCaptureDevice(); + AVCaptureDeviceFormat *match = qt_find_best_resolution_match(captureDevice, res, + m_service->session()->defaultCodec()); + + if (!match) { + qDebugCamera() << Q_FUNC_INFO << "unsupported resolution:" << res; + return; + } + + if (match != captureDevice.activeFormat) { + const AVFConfigurationLock lock(captureDevice); + if (!lock) { + qDebugCamera() << Q_FUNC_INFO << "failed to lock for configuration"; + return; + } + captureDevice.activeFormat = match; + } + +#if defined(Q_OS_IOS) && QT_IOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__IPHONE_8_0) + if (QSysInfo::MacintoshVersion >= QSysInfo::MV_IOS_8_0) { + AVCaptureStillImageOutput *imageOutput = m_service->imageCaptureControl()->stillImageOutput(); + if (res == qt_device_format_high_resolution(captureDevice.activeFormat)) + imageOutput.highResolutionStillImageOutputEnabled = YES; + else + imageOutput.highResolutionStillImageOutputEnabled = NO; + } +#endif + } else { +#else + { +#endif + // TODO: resolution without capture device format ... + } +} + +bool AVFImageEncoderControl::videoCaptureDeviceIsValid() const +{ + if (!m_service->session() || !m_service->session()->videoCaptureDevice()) + return false; + + AVCaptureDevice *captureDevice = m_service->session()->videoCaptureDevice(); + if (!captureDevice.formats || !captureDevice.formats.count) + return false; + + return true; +} + +QT_END_NAMESPACE + +#include "moc_avfimageencodercontrol.cpp" |