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C++ GDALRasterBand::InvalidateMaskBand方法代码示例

本文整理汇总了C++中GDALRasterBand::InvalidateMaskBand方法的典型用法代码示例。如果您正苦于以下问题:C++ GDALRasterBand::InvalidateMaskBand方法的具体用法?C++ GDALRasterBand::InvalidateMaskBand怎么用?C++ GDALRasterBand::InvalidateMaskBand使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在GDALRasterBand的用法示例。


在下文中一共展示了GDALRasterBand::InvalidateMaskBand方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: CleanOverviews


//.........这里部分代码省略.........
                    papoOverviewBands[nNewOverviews++] = poOverview;
                    break;
                }
            }
        }

        if( nNewOverviews > 0 )
        {
            const double dfOffset = dfAreaNewOverviews / dfAreaRefreshedOverviews;
            const double dfScale = 1.0 - dfOffset;
            pScaledProgress = GDALCreateScaledProgress(
                    dfOffset + dfScale * iBand / nBands,
                    dfOffset + dfScale * (iBand+1) / nBands,
                    pfnProgress, pProgressData );
            eErr = GDALRegenerateOverviews( (GDALRasterBandH) poBand,
                                            nNewOverviews,
                                            (GDALRasterBandH*)papoOverviewBands,
                                            pszResampling,
                                            GDALScaledProgress, pScaledProgress );
            GDALDestroyScaledProgress( pScaledProgress );
        }
    }

/* -------------------------------------------------------------------- */
/*      Cleanup                                                         */
/* -------------------------------------------------------------------- */
    CPLFree( papoOverviewBands );
    CPLFree( panNewOverviewList );
    CPLFree( pahBands );

/* -------------------------------------------------------------------- */
/*      If we have a mask file, we need to build its overviews too.     */
/* -------------------------------------------------------------------- */
    if( HaveMaskFile() && poMaskDS )
    {
        // Some config option are not compatible with mask overviews
        // so unset them, and define more sensible values.
        const bool bJPEG =
            EQUAL(CPLGetConfigOption("COMPRESS_OVERVIEW", ""), "JPEG");
        const bool bPHOTOMETRIC_YCBCR =
            EQUAL(CPLGetConfigOption("PHOTOMETRIC_OVERVIEW", ""), "YCBCR");
        if( bJPEG )
            CPLSetThreadLocalConfigOption("COMPRESS_OVERVIEW", "DEFLATE");
        if( bPHOTOMETRIC_YCBCR )
            CPLSetThreadLocalConfigOption("PHOTOMETRIC_OVERVIEW", "");

        poMaskDS->BuildOverviews( pszResampling, nOverviews, panOverviewList,
                                  0, NULL, pfnProgress, pProgressData );

        // Restore config option.
        if( bJPEG )
            CPLSetThreadLocalConfigOption("COMPRESS_OVERVIEW", "JPEG");
        if( bPHOTOMETRIC_YCBCR )
            CPLSetThreadLocalConfigOption("PHOTOMETRIC_OVERVIEW", "YCBCR");

        if( bOwnMaskDS )
        {
            // Reset the poMask member of main dataset bands, since it
            // will become invalid after poMaskDS closing.
            for( int iBand = 1; iBand <= poDS->GetRasterCount(); iBand ++ )
            {
                GDALRasterBand *poOtherBand = poDS->GetRasterBand(iBand);
                if( poOtherBand != NULL )
                    poOtherBand->InvalidateMaskBand();
            }

            GDALClose( poMaskDS );
        }

        // force next request to reread mask file.
        poMaskDS = NULL;
        bOwnMaskDS = false;
        bCheckedForMask = false;
    }

/* -------------------------------------------------------------------- */
/*      If we have an overview dataset, then mark all the overviews     */
/*      with the base dataset  Used later for finding overviews         */
/*      masks.  Uggg.                                                   */
/* -------------------------------------------------------------------- */
    if( poODS )
    {
        const int nOverviewCount = GetOverviewCount(1);

        for( int iOver = 0; iOver < nOverviewCount; iOver++ )
        {
            GDALRasterBand *poOtherBand = GetOverview( 1, iOver );
            GDALDataset *poOverDS = poOtherBand != NULL ?
                poOtherBand->GetDataset() : NULL;

            if( poOverDS != NULL )
            {
                poOverDS->oOvManager.poBaseDS = poDS;
                poOverDS->oOvManager.poDS = poOverDS;
            }
        }
    }

    return eErr;
}
开发者ID:ryandavid,项目名称:rotobox,代码行数:101,代码来源:gdaldefaultoverviews.cpp


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