d-pointer classes, private/public changes

Change-Id: I4ca133aebad0c088296ab293f95f0a6d76d18395
Task-number: QTBUG-39946
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

1 files changed, 206 insertions, 0 deletions

diff --git a/src/render/texture/qtexturedata.cpp b/src/render/texture/qtexturedata.cpp
new file mode 100644
index 000000000..d6663a479
--- /dev/null
+++ b/src/render/texture/qtexturedata.cpp
@@ -0,0 +1,206 @@
+/****************************************************************************
+**
+** 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 "qtexturedata_p.h"
+
+#include <QDebug>
+#include <QFileInfo>
+#include <QFile>
+#include <qendian.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+QTexImageDataPrivate::QTexImageDataPrivate()
+    : m_width(-1)
+    , m_height(-1)
+    , m_depth(-1)
+    , m_isCompressed(false)
+    , m_format(QOpenGLTexture::RGBA8_UNorm)
+{
+}
+
+QTexImageData::QTexImageData()
+    : d_ptr(new QTexImageDataPrivate())
+{
+}
+
+QTexImageData::QTexImageData(QTexImageDataPrivate &dd)
+    : d_ptr(&dd)
+{
+}
+
+QTexImageData::~QTexImageData()
+{
+    cleanup();
+    delete d_ptr;
+}
+
+QTexImageData &QTexImageData::operator=(const QTexImageData &other)
+{
+    Q_D(QTexImageData);
+    d->m_width = other.d_ptr->m_width;
+    d->m_height = other.d_ptr->m_height;
+    d->m_depth = other.d_ptr->m_depth;
+    d->m_isCompressed = other.d_ptr->m_isCompressed;
+    d->m_pixelFormat = other.d_ptr->m_pixelFormat;
+    d->m_pixelType = other.d_ptr->m_pixelType;
+    d->m_data = other.d_ptr->m_data;
+
+    return *this;
+}
+
+void QTexImageData::cleanup()
+{
+    Q_D(QTexImageData);
+    d->m_width = -1;
+    d->m_height = -1;
+    d->m_depth = -1;
+    d->m_isCompressed = false;
+    d->m_data.clear();
+}
+
+bool QTexImageData::isCompressed() const
+{
+    Q_D(const QTexImageData);
+    return d->m_isCompressed;
+}
+
+int QTexImageData::width() const
+{
+    Q_D(const QTexImageData);
+    return d->m_width;
+}
+
+int QTexImageData::height() const
+{
+    Q_D(const QTexImageData);
+    return d->m_height;
+}
+
+int QTexImageData::depth() const
+{
+    Q_D(const QTexImageData);
+    return d->m_depth;
+}
+
+QOpenGLTexture::TextureFormat QTexImageData::format() const
+{
+    Q_D(const QTexImageData);
+    return d->m_format;
+}
+
+void QTexImageData::setImage(const QImage &image)
+{
+    Q_D(QTexImageData);
+    d->m_width = image.width();
+    d->m_height = image.height();
+    d->m_depth = 1;
+
+    QImage glImage = image.convertToFormat(QImage::Format_RGBA8888);
+    Q_ASSERT_X(glImage.bytesPerLine() == (glImage.width() * glImage.depth() + 7) / 8,
+               "QTexImageData::setImage", "glImage is not packed"); // QTBUG-48330
+    QByteArray imageBytes((const char*) glImage.constBits(), glImage.byteCount());
+    setData(imageBytes, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
+    d->m_format = QOpenGLTexture::RGBA8_UNorm;
+}
+
+void QTexImageData::setData(const QByteArray &data, QOpenGLTexture::PixelFormat fmt,
+                            QOpenGLTexture::PixelType ptype)
+{
+    Q_D(QTexImageData);
+    d->m_isCompressed = false;
+    d->m_data = data;
+    d->m_pixelFormat = fmt;
+    d->m_pixelType = ptype;
+}
+
+bool QTexImageData::setCompressedFile(const QString &source)
+{
+    Q_D(QTexImageData);
+    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)) {
+        d->m_format = QOpenGLTexture::RGB8_ETC1; // may get changed to RGB8_ETC2 later on
+        // get the extended (multiple of 4) width and height
+        d->m_width = qFromBigEndian(*(reinterpret_cast<const quint16 *>(header.constData() + 6 + 2)));
+        d->m_height = qFromBigEndian(*(reinterpret_cast<const quint16 *>(header.constData() + 6 + 2 + 2)));
+        d->m_depth = 1;
+        QByteArray data = f.readAll();
+        if (data.size() < (d->m_width / 4) * (d->m_height / 4) * 8)
+            qWarning() << "Unexpected end of ETC1 data in" << source;
+        setData(data, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
+        d->m_isCompressed = true;
+        return true;
+    }
+
+    return false;
+}
+
+QByteArray QTexImageData::data() const
+{
+    Q_D(const QTexImageData);
+    return d->m_data;
+}
+
+QOpenGLTexture::PixelFormat QTexImageData::pixelFormat() const
+{
+    Q_D(const QTexImageData);
+    return d->m_pixelFormat;
+}
+
+QOpenGLTexture::PixelType QTexImageData::pixelType() const
+{
+    Q_D(const QTexImageData);
+    return d->m_pixelType;
+}
+
+} // namespace Qt3DRender
+
+QT_END_NAMESPACE