diff options
Diffstat (limited to 'src/plugins/imageformats/tga/qtgafile.cpp')
| -rw-r--r-- | src/plugins/imageformats/tga/qtgafile.cpp | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/src/plugins/imageformats/tga/qtgafile.cpp b/src/plugins/imageformats/tga/qtgafile.cpp deleted file mode 100644 index 092ce0a6f..000000000 --- a/src/plugins/imageformats/tga/qtgafile.cpp +++ /dev/null @@ -1,266 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the Qt3D module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 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 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qtgafile.h" - -#include <QtCore/qiodevice.h> -#include <QtCore/qdebug.h> -#include <QtCore/qdatetime.h> - -struct TgaReader -{ - virtual ~TgaReader() {} - virtual QRgb operator()(QIODevice *s) const = 0; -}; - -struct Tga16Reader : public TgaReader -{ - ~Tga16Reader() {} - QRgb operator()(QIODevice *s) const - { - char ch1, ch2; - if (s->getChar(&ch1) && s->getChar(&ch2)) { - quint16 d = (int(ch1) & 0xFF) | ((int(ch2) & 0xFF) << 8); - QRgb result = (d & 0x8000) ? 0xFF000000 : 0x00000000; - result |= (d & 0x7C00 << 6) | (d & 0x03E0 << 3) | (d & 0x001F); - return result; - } else { - return 0; - } - } -}; - -struct Tga24Reader : public TgaReader -{ - QRgb operator()(QIODevice *s) const - { - char r, g, b; - if (s->getChar(&b) && s->getChar(&g) && s->getChar(&r)) - return qRgb(uchar(r), uchar(g), uchar(b)); - else - return 0; - } -}; - -struct Tga32Reader : public TgaReader -{ - QRgb operator()(QIODevice *s) const - { - char r, g, b, a; - if (s->getChar(&b) && s->getChar(&g) && s->getChar(&r) && s->getChar(&a)) - return qRgba(uchar(r), uchar(g), uchar(b), uchar(a)); - else - return 0; - } -}; - -/*! - \class QTgaFile - \since 4.8 - \internal - - File data container for a TrueVision Graphics format file. - - Format is as described here: - http://local.wasp.uwa.edu.au/~pbourke/dataformats/tga/ - http://netghost.narod.ru/gff2/graphics/summary/tga.htm - - Usage is: - \code - QTgaFile tga(myFile); - QImage tgaImage; - if (tga.isValid()) - tgaImage = tga.readImage(); - \endcode - - The class is designed to handle sequential and non-sequential - sources, so during construction the mHeader is read. Then during - the readImage() call the rest of the data is read. - - After passing myFile to the constructor, if the QIODevice *myFile - is read, or has seek() called, the results are undefined - so don't - do that. -*/ - -/*! - Construct a new QTgaFile object getting data from \a device. - - The object does not take ownership of the \a device, but until the - object is destroyed do not do any non-const operations, eg seek or - read on the device. -*/ -QTgaFile::QTgaFile(QIODevice *device) - : mDevice(device) -{ - ::memset(mHeader, 0, HeaderSize); - if (!mDevice->isReadable()) - { - mErrorMessage = QObject::tr("Could not read image data"); - return; - } - if (mDevice->isSequential()) - { - mErrorMessage = QObject::tr("Sequential device (eg socket) for image read not supported"); - return; - } - if (!mDevice->seek(0)) - { - mErrorMessage = QObject::tr("Seek file/device for image read failed"); - return; - } - int bytes = device->read((char*)mHeader, HeaderSize); - if (bytes != HeaderSize) - { - mErrorMessage = QObject::tr("Image mHeader read failed"); - return; - } - if (mHeader[ImageType] != 2) - { - // TODO: should support other image types - mErrorMessage = QObject::tr("Image type not supported"); - return; - } - int bitsPerPixel = mHeader[PixelDepth]; - bool validDepth = (bitsPerPixel == 16 || bitsPerPixel == 24 || bitsPerPixel == 32); - if (!validDepth) - { - mErrorMessage = QObject::tr("Image dpeth not valid"); - } - int curPos = mDevice->pos(); - int fileBytes = mDevice->size(); - if (!mDevice->seek(fileBytes - FooterSize)) - { - mErrorMessage = QObject::tr("Could not seek to image read footer"); - return; - } - char footer[FooterSize]; - bytes = mDevice->read((char*)footer, FooterSize); - if (bytes != FooterSize) - { - mErrorMessage = QObject::tr("Could not read footer"); - } - if (qstrncmp(&footer[SignatureOffset], "TRUEVISION-XFILE", 16) != 0) - { - mErrorMessage = QObject::tr("Image type (non-TrueVision 2.0) not supported"); - } - if (!mDevice->seek(curPos)) - { - mErrorMessage = QObject::tr("Could not reset to read data"); - } -} - -/*! - \internal - Destroy the device, recovering any resources. -*/ -QTgaFile::~QTgaFile() -{ -} - -/*! - \internal - Reads an image file from the QTgaFile's device, and returns it. - - This method seeks to the absolute position of the image data in the file, - so no assumptions are made about where the devices read pointer is when this - method is called. For this reason only random access devices are supported. - - If the constructor completed successfully, such that isValid() returns true, - then this method is likely to succeed, unless the file is somehow corrupted. - - In the case that the read fails, the QImage returned will be null, such that - QImage::isNull() will be true. -*/ -QImage QTgaFile::readImage() -{ - if (!isValid()) - return QImage(); - - int offset = mHeader[IdLength]; // Mostly always zero - - // Even in TrueColor files a color pallette may be present - if (mHeader[ColorMapType] == 1) - offset += littleEndianInt(&mHeader[CMapLength]) * littleEndianInt(&mHeader[CMapDepth]); - - mDevice->seek(HeaderSize + offset); - - char dummy; - for (int i = 0; i < offset; ++i) - mDevice->getChar(&dummy); - - int bitsPerPixel = mHeader[PixelDepth]; - int imageWidth = width(); - int imageHeight = height(); - - unsigned char desc = mHeader[ImageDescriptor]; - //unsigned char xCorner = desc & 0x10; // 0 = left, 1 = right - unsigned char yCorner = desc & 0x20; // 0 = lower, 1 = upper - - QImage im(imageWidth, imageHeight, QImage::Format_ARGB32); - TgaReader *reader = 0; - if (bitsPerPixel == 16) - reader = new Tga16Reader(); - else if (bitsPerPixel == 24) - reader = new Tga24Reader(); - else if (bitsPerPixel == 32) - reader = new Tga32Reader(); - TgaReader &read = *reader; - - // For now only deal with yCorner, since no one uses xCorner == 1 - // Also this is upside down, since Qt has the origin flipped - if (yCorner) - { - for (int y = 0; y < imageHeight; ++y) - for (int x = 0; x < imageWidth; ++x) - im.setPixel(x, y, read(mDevice)); - } - else - { - for (int y = imageHeight - 1; y >= 0; --y) - for (int x = 0; x < imageWidth; ++x) - im.setPixel(x, y, read(mDevice)); - } - - delete reader; - - // TODO: add processing of TGA extension information - ie TGA 2.0 files - return im; -} |