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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "texturedata.h"
#include <QDebug>
#include <QOpenGLTexture>
#include <QFileInfo>
#include <QFile>
#include <qendian.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
TexImageData::TexImageData()
: m_width(-1)
, m_height(-1)
, m_depth(-1)
, m_isCompressed(false)
, m_format(QOpenGLTexture::RGBA8_UNorm)
{
}
TexImageData::~TexImageData()
{
}
void TexImageData::cleanup()
{
m_width = -1;
m_height = -1;
m_depth = -1;
m_isCompressed = false;
m_data.clear();
}
void TexImageData::setImage(const QImage &image)
{
m_width = image.width();
m_height = image.height();
m_depth = 1;
QImage glImage = image.convertToFormat(QImage::Format_RGBA8888);
Q_ASSERT_X(glImage.bytesPerLine() == (glImage.width() * glImage.depth() + 7) / 8, "TexImageData::setImage", "glImage is not packed"); // QTBUG-48330
QByteArray imageBytes((const char*) glImage.constBits(), glImage.byteCount());
setData(imageBytes, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
m_format = QOpenGLTexture::RGBA8_UNorm;
}
void TexImageData::setData(const QByteArray &data, QOpenGLTexture::PixelFormat fmt, QOpenGLTexture::PixelType ptype)
{
m_isCompressed = false;
m_data = data;
m_pixelFormat = fmt;
m_pixelType = ptype;
}
bool TexImageData::setCompressedFile(const QString &source)
{
const bool isPkm = QFileInfo(source).suffix() == QStringLiteral("pkm");
if (!isPkm)
return false;
QFile f(source);
if (!f.open(QIODevice::ReadOnly)) {
qWarning() << "Failed to open" << source;
return false;
}
// ETC1 in PKM, as generated by f.ex. Android's etc1tool
static const char pkmMagic[] = { 'P', 'K', 'M', ' ', '1', '0' };
const int pkmHeaderSize = 6 + 2 + 4 * 2;
QByteArray header = f.read(pkmHeaderSize);
if (header.size() >= pkmHeaderSize && !qstrncmp(header.constData(), pkmMagic, 6)) {
m_format = QOpenGLTexture::RGB8_ETC1; // may get changed to RGB8_ETC2 later on
// get the extended (multiple of 4) width and height
m_width = qFromBigEndian(*(reinterpret_cast<const quint16 *>(header.constData() + 6 + 2)));
m_height = qFromBigEndian(*(reinterpret_cast<const quint16 *>(header.constData() + 6 + 2 + 2)));
m_depth = 1;
QByteArray data = f.readAll();
if (data.size() < (m_width / 4) * (m_height / 4) * 8)
qWarning() << "Unexpected end of ETC1 data in" << source;
setData(data, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
m_isCompressed = true;
return true;
}
return false;
}
} // namespace Qt3DRender
QT_END_NAMESPACE
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