PARP Research Group

Universidad de Murcia

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src/qvip/qvimagebuffer.h Go to the documentation of this file. /* * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group. * <http://perception.inf.um.es> * University of Murcia, Spain. * * This file is part of the QVision library. * * QVision is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, version 3 of the License. * * QVision is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with QVision. If not, see <http://www.gnu.org/licenses/>. */ #ifndef QVIMAGE_BUFFER_H #define QVIMAGE_BUFFER_H #include <math.h> #include <QObject> #include <QDebug> #include <QSharedData> #include <qvdefines.h> //#include <stdlib.h> #include <malloc.h> #ifndef DOXYGEN_IGNORE_THIS template <typename Type = uChar> class QVImageBuffer: public QSharedData { public: // Default constructor QVImageBuffer(uInt cols = 0, uInt rows = 0, uInt stepPadding = 8); // Buffer constructor QVImageBuffer(uInt cols, uInt rows, uInt step, const Type * buffer = NULL); // Copy constructor QVImageBuffer(const QVImageBuffer<Type> &); // Destructor ~QVImageBuffer() { if (_data != NULL) delete _data; } uInt getRows() const { return rows; } uInt getCols() const { return cols; } uInt getStep() const { return step; } int getDataSize() const { return dataSize; } const Type *getReadData() const { return _data; } Type * getWriteData() const { return _data; } private: const uInt cols, rows, step, dataSize; Type * _data; }; // Gets the closest value to 'size' that is also: // - Equal or larger than 'size' value. // - Multiple of 'padding' value. uInt paddedStep(const uInt size, const uInt padding); // Default constructor template <typename Type> QVImageBuffer<Type>::QVImageBuffer(uInt cols, uInt rows, uInt stepPadding): QSharedData(), cols(cols), rows(rows), step( stepPadding*(uInt)ceil((double)(sizeof(Type) * cols)/stepPadding) ), dataSize(rows * step), _data( (dataSize > 0)? new Type[dataSize]: NULL ) { // Check 32-byte aligned memory allocation //Q_WARNING( ((unsigned int *)_data % 16u) == 0 ); Q_ASSERT_X(step % stepPadding == 0, "QVImageBuffer::QVImageBuffer()","step % stepPadding != 0"); Q_ASSERT_X(step >= cols, "QVImageBuffer::allocData()", "0 < step < cols"); Q_ASSERT_X(step == paddedStep(sizeof(Type) * cols, stepPadding), "QVImageBuffer::allocData()", "Debug error 31145X"); } // Buffer constructor template <typename Type> QVImageBuffer<Type>::QVImageBuffer(uInt cols, uInt rows, uInt step, const Type *buffer): QSharedData(), cols(cols), rows(rows), step(step), dataSize(rows * step), _data( (dataSize > 0)? new Type[dataSize]: NULL ) { // Check 32-byte aligned memory allocation //Q_WARNING( ((uintptr_t)_data % 16u) == 0 ); if ( (buffer != NULL) and (dataSize > 0) ) memcpy(_data,buffer, dataSize); Q_ASSERT_X(step >= cols, "QVImageBuffer::allocData()", "0 < step < cols"); } // Copy constructor template <typename Type> QVImageBuffer<Type>::QVImageBuffer(const QVImageBuffer<Type> &imageBuffer): QSharedData(imageBuffer), cols(imageBuffer.cols), rows(imageBuffer.rows), step(imageBuffer.step), dataSize(imageBuffer.dataSize), _data( (dataSize > 0)? new Type[dataSize]: NULL ) { // Check 32-byte aligned memory allocation //Q_WARNING( ((uintptr_t)_data % 16u) == 0 ); if (dataSize > 0) memcpy(_data, imageBuffer.getReadData(), dataSize); } #endif // DOXYGEN_IGNORE_THIS #endif // QVIMAGE_BUFFER_H

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