C++ (Cpp) UnrefUnderlyingRasterBand Examples

Example #1

File: gdalproxypool.cpp Project: 0004c/node-gdal

const char *GDALProxyPoolRasterBand::GetMetadataItem( const char * pszName,
                                                   const char * pszDomain  )
{
    if (metadataItemSet == NULL)
        metadataItemSet = CPLHashSetNew(hash_func_get_metadata_item,
                                        equal_func_get_metadata_item,
                                        free_func_get_metadata_item);

    GDALRasterBand* poUnderlyingRasterBand = RefUnderlyingRasterBand();
    if (poUnderlyingRasterBand == NULL)
        return NULL;

    const char* pszUnderlyingMetadataItem =
            poUnderlyingRasterBand->GetMetadataItem(pszName, pszDomain);

    GetMetadataItemElt* pElt = (GetMetadataItemElt*) CPLMalloc(sizeof(GetMetadataItemElt));
    pElt->pszName = (pszName) ? CPLStrdup(pszName) : NULL;
    pElt->pszDomain = (pszDomain) ? CPLStrdup(pszDomain) : NULL;
    pElt->pszMetadataItem = (pszUnderlyingMetadataItem) ? CPLStrdup(pszUnderlyingMetadataItem) : NULL;
    CPLHashSetInsert(metadataItemSet, pElt);

    UnrefUnderlyingRasterBand(poUnderlyingRasterBand);

    return pElt->pszMetadataItem;
}

Example #2

File: gdalproxypool.cpp Project: 0004c/node-gdal

GDALRasterBand *GDALProxyPoolRasterBand::GetOverview(int nOverviewBand)
{
    if (nOverviewBand >= 0 && nOverviewBand < nSizeProxyOverviewRasterBand)
    {
        if (papoProxyOverviewRasterBand[nOverviewBand])
            return papoProxyOverviewRasterBand[nOverviewBand];
    }

    GDALRasterBand* poUnderlyingRasterBand = RefUnderlyingRasterBand();
    if (poUnderlyingRasterBand == NULL)
        return NULL;

    GDALRasterBand* poOverviewRasterBand = poUnderlyingRasterBand->GetOverview(nOverviewBand);
    if (poOverviewRasterBand == NULL)
    {
        UnrefUnderlyingRasterBand(poUnderlyingRasterBand);
        return NULL;
    }

    if (nOverviewBand >= nSizeProxyOverviewRasterBand)
    {
        int i;
        papoProxyOverviewRasterBand = (GDALProxyPoolOverviewRasterBand**)
                CPLRealloc(papoProxyOverviewRasterBand,
                        sizeof(GDALProxyPoolOverviewRasterBand*) * (nOverviewBand + 1));
        for(i=nSizeProxyOverviewRasterBand; i<nOverviewBand + 1;i++)
            papoProxyOverviewRasterBand[i] = NULL;
        nSizeProxyOverviewRasterBand = nOverviewBand + 1;
    }

    papoProxyOverviewRasterBand[nOverviewBand] =
            new GDALProxyPoolOverviewRasterBand((GDALProxyPoolDataset*)poDS,
                                                poOverviewRasterBand,
                                                this, nOverviewBand);

    UnrefUnderlyingRasterBand(poUnderlyingRasterBand);

    return papoProxyOverviewRasterBand[nOverviewBand];
}

Example #3

File: gdalproxypool.cpp Project: 0004c/node-gdal

const char *GDALProxyPoolRasterBand::GetUnitType()
{
    GDALRasterBand* poUnderlyingRasterBand = RefUnderlyingRasterBand();
    if (poUnderlyingRasterBand == NULL)
        return NULL;

    CPLFree(pszUnitType);
    pszUnitType = NULL;

    const char* pszUnderlyingUnitType = poUnderlyingRasterBand->GetUnitType();
    if (pszUnderlyingUnitType)
        pszUnitType = CPLStrdup(pszUnderlyingUnitType);

    UnrefUnderlyingRasterBand(poUnderlyingRasterBand);

    return pszUnitType;
}

Example #4

File: gdalproxypool.cpp Project: 0004c/node-gdal

GDALColorTable *GDALProxyPoolRasterBand::GetColorTable()
{
    GDALRasterBand* poUnderlyingRasterBand = RefUnderlyingRasterBand();
    if (poUnderlyingRasterBand == NULL)
        return NULL;

    if (poColorTable)
        delete poColorTable;
    poColorTable = NULL;

    GDALColorTable* poUnderlyingColorTable = poUnderlyingRasterBand->GetColorTable();
    if (poUnderlyingColorTable)
        poColorTable = poUnderlyingColorTable->Clone();

    UnrefUnderlyingRasterBand(poUnderlyingRasterBand);

    return poColorTable;
}

Example #5

File: gdalproxypool.cpp Project: 0004c/node-gdal

GDALRasterBand *GDALProxyPoolRasterBand::GetMaskBand()
{
    if (poProxyMaskBand)
        return poProxyMaskBand;

    GDALRasterBand* poUnderlyingRasterBand = RefUnderlyingRasterBand();
    if (poUnderlyingRasterBand == NULL)
        return NULL;

    GDALRasterBand* poMaskBand = poUnderlyingRasterBand->GetMaskBand();

    poProxyMaskBand =
            new GDALProxyPoolMaskBand((GDALProxyPoolDataset*)poDS,
                                       poMaskBand,
                                       this);

    UnrefUnderlyingRasterBand(poUnderlyingRasterBand);

    return poProxyMaskBand;
}

Example #6

File: gdalproxydataset.cpp Project: Mavrx-inc/gdal

CPLErr GDALProxyRasterBand::FlushCache()
{
    // We need to make sure that all cached bocks at the proxy level are
    // first flushed
    CPLErr ret = GDALRasterBand::FlushCache();
    if( ret == CE_None )
    {
        GDALRasterBand* poSrcBand = RefUnderlyingRasterBand();
        if (poSrcBand)
        {
            ret = poSrcBand->FlushCache();
            UnrefUnderlyingRasterBand(poSrcBand);
        }
        else
        {
            ret = CE_Failure;
        }
    }
    return ret;
}

Example #7

File: gdalproxydataset.cpp Project: ryandavid/rotobox

CPLErr GDALProxyRasterBand::IRasterIO( GDALRWFlag eRWFlag,
                                int nXOff, int nYOff, int nXSize, int nYSize,
                                void * pData, int nBufXSize, int nBufYSize,
                                GDALDataType eBufType,
                                GSpacing nPixelSpace,
                                GSpacing nLineSpace,
                                GDALRasterIOExtraArg* psExtraArg )
{
    CPLErr ret;
    GDALRasterBand* poSrcBand = RefUnderlyingRasterBand();
    if (poSrcBand)
    {
/* -------------------------------------------------------------------- */
/*      Do some validation of parameters.                               */
/* -------------------------------------------------------------------- */
        if( nXOff + nXSize > poSrcBand->GetXSize() || nYOff + nYSize > poSrcBand->GetYSize() )
        {
            ReportError( CE_Failure, CPLE_IllegalArg,
                      "Access window out of range in RasterIO().  Requested\n"
                      "(%d,%d) of size %dx%d on raster of %dx%d.",
                      nXOff, nYOff, nXSize, nYSize, poSrcBand->GetXSize(), poSrcBand->GetYSize() );
            ret =  CE_Failure;
        }
        else
        {
            ret = poSrcBand->IRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize,
                                pData, nBufXSize, nBufYSize, eBufType,
                                nPixelSpace, nLineSpace, psExtraArg );
        }
        UnrefUnderlyingRasterBand(poSrcBand);
    }
    else
    {
        ret = CE_Failure;
    }
    return ret;
}