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92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
/******************************************************************************
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* $Id: gdalallvalidmaskband.cpp 27745 2014-09-27 16:38:57Z goatbar $
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*
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* Project: GDAL Core
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* Purpose: Implementation of GDALAllValidMaskBand, a class implementing all
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* a default 'all valid' band mask.
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* Author: Frank Warmerdam, warmerdam@pobox.com
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*
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******************************************************************************
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* Copyright (c) 2007, Frank Warmerdam
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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****************************************************************************/
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#include "gdal_priv.h"
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CPL_CVSID("$Id: gdalallvalidmaskband.cpp 27745 2014-09-27 16:38:57Z goatbar $");
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/************************************************************************/
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/* GDALAllValidMaskBand() */
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/************************************************************************/
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GDALAllValidMaskBand::GDALAllValidMaskBand( GDALRasterBand *poParent )
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{
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poDS = NULL;
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nBand = 0;
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nRasterXSize = poParent->GetXSize();
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nRasterYSize = poParent->GetYSize();
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eDataType = GDT_Byte;
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poParent->GetBlockSize( &nBlockXSize, &nBlockYSize );
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}
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/************************************************************************/
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/* ~GDALAllValidMaskBand() */
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/************************************************************************/
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GDALAllValidMaskBand::~GDALAllValidMaskBand()
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{
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}
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/************************************************************************/
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/* IReadBlock() */
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/************************************************************************/
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CPLErr GDALAllValidMaskBand::IReadBlock( CPL_UNUSED int nXBlockOff,
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CPL_UNUSED int nYBlockOff,
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void * pImage )
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{
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memset( pImage, 255, nBlockXSize * nBlockYSize );
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return CE_None;
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}
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/************************************************************************/
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/* GetMaskBand() */
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/************************************************************************/
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GDALRasterBand *GDALAllValidMaskBand::GetMaskBand()
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{
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return this;
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}
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/************************************************************************/
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/* GetMaskFlags() */
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/************************************************************************/
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int GDALAllValidMaskBand::GetMaskFlags()
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{
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return GMF_ALL_VALID;
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}
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