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/****************************************************************************
**
** Copyright (C) 2021 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 "qqnxvideodevices_p.h"
#include "private/qcameradevice_p.h"
#include "qcameradevice.h"
#include <camera/camera_api.h>
#include <qdir.h>
#include <qdebug.h>
QT_BEGIN_NAMESPACE
static QVideoFrameFormat::PixelFormat fromCameraFrametype(camera_frametype_t type)
{
switch (type) {
default:
case CAMERA_FRAMETYPE_UNSPECIFIED:
return QVideoFrameFormat::Format_Invalid;
case CAMERA_FRAMETYPE_NV12:
return QVideoFrameFormat::Format_NV12;
case CAMERA_FRAMETYPE_RGB8888:
return QVideoFrameFormat::Format_ARGB8888;
case CAMERA_FRAMETYPE_JPEG:
return QVideoFrameFormat::Format_Jpeg;
case CAMERA_FRAMETYPE_GRAY8:
return QVideoFrameFormat::Format_Y8;
case CAMERA_FRAMETYPE_CBYCRY:
return QVideoFrameFormat::Format_UYVY;
case CAMERA_FRAMETYPE_YCBCR420P:
return QVideoFrameFormat::Format_YUV420P;
case CAMERA_FRAMETYPE_YCBYCR:
return QVideoFrameFormat::Format_YUYV;
}
}
static QList<QCameraDevice> enumerateCameras()
{
camera_unit_t cameraUnits[64];
unsigned int knownCameras = 0;
const camera_error_t result = camera_get_supported_cameras(64, &knownCameras, cameraUnits);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve supported camera types:" << result;
return {};
}
QList<QCameraDevice> cameras;
for (unsigned int i = 0; i < knownCameras; ++i) {
QCameraDevicePrivate *p = new QCameraDevicePrivate;
p->id = QByteArray::number(cameraUnits[i]);
char name[CAMERA_LOCATION_NAMELEN];
camera_get_location_property(cameraUnits[i], CAMERA_LOCATION_NAME, &name, CAMERA_LOCATION_END);
p->description = QString::fromUtf8(name);
if (i == 0)
p->isDefault = true;
camera_handle_t handle;
if (camera_open(cameraUnits[i], CAMERA_MODE_PREAD, &handle) == CAMERA_EOK) {
// query camera properties
uint32_t nResolutions = 0;
camera_get_supported_vf_resolutions(handle, 0, &nResolutions, nullptr);
QVarLengthArray<camera_res_t> resolutions(nResolutions);
camera_get_supported_vf_resolutions(handle, nResolutions, &nResolutions, resolutions.data());
uint32_t nFrameTypes;
camera_get_supported_vf_frame_types(handle, 0, &nFrameTypes, nullptr);
QVarLengthArray<camera_frametype_t> frameTypes(nFrameTypes);
camera_get_supported_vf_frame_types(handle, nFrameTypes, &nFrameTypes, frameTypes.data());
for (auto res : resolutions) {
QSize resolution(res.width, res.height);
p->photoResolutions.append(resolution);
for (auto frameType : frameTypes) {
auto pixelFormat = fromCameraFrametype(frameType);
if (pixelFormat == QVideoFrameFormat::Format_Invalid)
continue;
uint32_t nFrameRates;
camera_get_specified_vf_framerates(handle, frameType, res, 0, &nFrameRates, nullptr, nullptr);
QVarLengthArray<double> frameRates(nFrameRates);
bool continuous = false;
camera_get_specified_vf_framerates(handle, frameType, res, nFrameRates, &nFrameRates, frameRates.data(), &continuous);
QCameraFormatPrivate *f = new QCameraFormatPrivate;
f->resolution = resolution;
f->pixelFormat = pixelFormat;
f->minFrameRate = 1.e10;
for (auto fr : frameRates) {
if (fr < f->minFrameRate)
f->minFrameRate = fr;
if (fr > f->maxFrameRate)
f->maxFrameRate = fr;
}
p->videoFormats.append(f->create());
}
}
}
cameras.append(p->create());
}
return cameras;
}
QQnxVideoDevices::QQnxVideoDevices(QPlatformMediaIntegration *integration)
: QPlatformVideoDevices(integration)
{
}
QList<QCameraDevice> QQnxVideoDevices::videoDevices() const
{
if (!camerasChecked) {
camerasChecked = true;
cameras = enumerateCameras();
}
return cameras;
}
QT_END_NAMESPACE
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