CPLErr
GDALDefaultOverviews::BuildOverviews(
const char * pszBasename,
const char * pszResampling,
int nOverviews, int * panOverviewList,
int nBands, int * panBandList,
GDALProgressFunc pfnProgress, void * pProgressData)
{
if( pfnProgress == NULL )
pfnProgress = GDALDummyProgress;
if( nOverviews == 0 )
return CleanOverviews();
/* -------------------------------------------------------------------- */
/* If we don't already have an overview file, we need to decide */
/* what format to use. */
/* -------------------------------------------------------------------- */
if( poODS == NULL )
{
bOvrIsAux = CPLTestBool(CPLGetConfigOption( "USE_RRD", "NO" ));
if( bOvrIsAux )
{
osOvrFilename = CPLResetExtension(poDS->GetDescription(),"aux");
VSIStatBufL sStatBuf;
if( VSIStatExL( osOvrFilename, &sStatBuf,
VSI_STAT_EXISTS_FLAG ) == 0 )
osOvrFilename.Printf( "%s.aux", poDS->GetDescription() );
}
}
/* -------------------------------------------------------------------- */
/* If we already have the overviews open, but they are */
/* read-only, then try and reopen them read-write. */
/* -------------------------------------------------------------------- */
else if( poODS->GetAccess() == GA_ReadOnly )
{
GDALClose( poODS );
poODS = static_cast<GDALDataset *>(
GDALOpen( osOvrFilename, GA_Update ));
if( poODS == NULL )
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* Our TIFF overview support currently only works safely if all */
/* bands are handled at the same time. */
/* -------------------------------------------------------------------- */
if( !bOvrIsAux && nBands != poDS->GetRasterCount() )
{
CPLError( CE_Failure, CPLE_NotSupported,
"Generation of overviews in external TIFF currently only "
"supported when operating on all bands. "
"Operation failed." );
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* If a basename is provided, use it to override the internal */
/* overview filename. */
/* -------------------------------------------------------------------- */
if( pszBasename == NULL && osOvrFilename.length() == 0 )
pszBasename = poDS->GetDescription();
if( pszBasename != NULL )
{
if( bOvrIsAux )
osOvrFilename.Printf( "%s.aux", pszBasename );
else
osOvrFilename.Printf( "%s.ovr", pszBasename );
}
/* -------------------------------------------------------------------- */
/* Establish which of the overview levels we already have, and */
/* which are new. We assume that band 1 of the file is */
/* representative. */
/* -------------------------------------------------------------------- */
GDALRasterBand *poBand = poDS->GetRasterBand( 1 );
int nNewOverviews = 0;
int *panNewOverviewList = static_cast<int *>(
CPLCalloc(sizeof(int), nOverviews) );
double dfAreaNewOverviews = 0;
double dfAreaRefreshedOverviews = 0;
for( int i = 0; i < nOverviews && poBand != NULL; i++ )
{
for( int j = 0; j < poBand->GetOverviewCount(); j++ )
{
GDALRasterBand * poOverview = poBand->GetOverview( j );
if( poOverview == NULL )
continue;
int nOvFactor =
GDALComputeOvFactor(poOverview->GetXSize(),
poBand->GetXSize(),
poOverview->GetYSize(),
poBand->GetYSize());
if( nOvFactor == panOverviewList[i]
|| nOvFactor == GDALOvLevelAdjust2( panOverviewList[i],
poBand->GetXSize(),
poBand->GetYSize() ) )
{
panOverviewList[i] *= -1;
}
}
const double dfArea = 1.0 / (panOverviewList[i] * panOverviewList[i]);
dfAreaRefreshedOverviews += dfArea;
if( panOverviewList[i] > 0 )
{
dfAreaNewOverviews += dfArea;
panNewOverviewList[nNewOverviews++] = panOverviewList[i];
}
}
/* -------------------------------------------------------------------- */
/* Build band list. */
/* -------------------------------------------------------------------- */
GDALRasterBand **pahBands = static_cast<GDALRasterBand **>(
CPLCalloc(sizeof(GDALRasterBand *), nBands) );
for( int i = 0; i < nBands; i++ )
pahBands[i] = poDS->GetRasterBand( panBandList[i] );
/* -------------------------------------------------------------------- */
/* Build new overviews - Imagine. Keep existing file open if */
/* we have it. But mark all overviews as in need of */
/* regeneration, since HFAAuxBuildOverviews() doesn't actually */
/* produce the imagery. */
/* -------------------------------------------------------------------- */
CPLErr eErr = CE_None;
void* pScaledProgress = GDALCreateScaledProgress(
0, dfAreaNewOverviews / dfAreaRefreshedOverviews,
pfnProgress, pProgressData );
if( bOvrIsAux )
{
if( nNewOverviews == 0 )
{
/* if we call HFAAuxBuildOverviews() with nNewOverviews == 0 */
/* because that there's no new, this will wipe existing */
/* overviews (#4831) */
// eErr = CE_None;
}
else
{
eErr = HFAAuxBuildOverviews( osOvrFilename, poDS, &poODS,
nBands, panBandList,
nNewOverviews, panNewOverviewList,
pszResampling,
GDALScaledProgress, pScaledProgress );
}
for( int j = 0; j < nOverviews; j++ )
{
if( panOverviewList[j] > 0 )
panOverviewList[j] *= -1;
}
}
/* -------------------------------------------------------------------- */
/* Build new overviews - TIFF. Close TIFF files while we */
/* operate on it. */
/* -------------------------------------------------------------------- */
else
{
if( poODS != NULL )
{
delete poODS;
poODS = NULL;
}
eErr = GTIFFBuildOverviews( osOvrFilename, nBands, pahBands,
nNewOverviews, panNewOverviewList,
pszResampling,
GDALScaledProgress, pScaledProgress );
// Probe for proxy overview filename.
if( eErr == CE_Failure )
{
const char *pszProxyOvrFilename =
poDS->GetMetadataItem("FILENAME","ProxyOverviewRequest");
if( pszProxyOvrFilename != NULL )
{
osOvrFilename = pszProxyOvrFilename;
eErr = GTIFFBuildOverviews( osOvrFilename, nBands, pahBands,
nNewOverviews, panNewOverviewList,
pszResampling,
GDALScaledProgress, pScaledProgress );
}
}
if( eErr == CE_None )
{
poODS = static_cast<GDALDataset *>(
GDALOpen( osOvrFilename, GA_Update ) );
if( poODS == NULL )
eErr = CE_Failure;
}
}
GDALDestroyScaledProgress( pScaledProgress );
/* -------------------------------------------------------------------- */
/* Refresh old overviews that were listed. */
/* -------------------------------------------------------------------- */
GDALRasterBand **papoOverviewBands = static_cast<GDALRasterBand **>(
CPLCalloc(sizeof(void*), nOverviews) );
for( int iBand = 0; iBand < nBands && eErr == CE_None; iBand++ )
{
poBand = poDS->GetRasterBand( panBandList[iBand] );
nNewOverviews = 0;
for( int i = 0; i < nOverviews && poBand != NULL; i++ )
{
for( int j = 0; j < poBand->GetOverviewCount(); j++ )
{
GDALRasterBand * poOverview = poBand->GetOverview( j );
if( poOverview == NULL )
continue;
int bHasNoData = FALSE;
double noDataValue = poBand->GetNoDataValue(&bHasNoData);
if( bHasNoData )
poOverview->SetNoDataValue(noDataValue);
const int nOvFactor =
GDALComputeOvFactor(poOverview->GetXSize(),
poBand->GetXSize(),
poOverview->GetYSize(),
poBand->GetYSize());
if( nOvFactor == - panOverviewList[i]
|| (panOverviewList[i] < 0 &&
nOvFactor == GDALOvLevelAdjust2( -panOverviewList[i],
poBand->GetXSize(),
poBand->GetYSize() )) )
{
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;
}
CPLErr
GDALDefaultOverviews::BuildOverviews(
const char * pszBasename,
const char * pszResampling,
int nOverviews, int * panOverviewList,
int nBands, int * panBandList,
GDALProgressFunc pfnProgress, void * pProgressData)
{
GDALRasterBand **pahBands;
CPLErr eErr;
int i;
if( pfnProgress == NULL )
pfnProgress = GDALDummyProgress;
if( nOverviews == 0 )
return CleanOverviews();
/* -------------------------------------------------------------------- */
/* If we don't already have an overview file, we need to decide */
/* what format to use. */
/* -------------------------------------------------------------------- */
if( poODS == NULL )
{
bOvrIsAux = CSLTestBoolean(CPLGetConfigOption( "USE_RRD", "NO" ));
if( bOvrIsAux )
{
VSIStatBufL sStatBuf;
osOvrFilename = CPLResetExtension(poDS->GetDescription(),"aux");
if( VSIStatL( osOvrFilename, &sStatBuf ) == 0 )
osOvrFilename.Printf( "%s.aux", poDS->GetDescription() );
}
}
/* -------------------------------------------------------------------- */
/* If we already have the overviews open, but they are */
/* read-only, then try and reopen them read-write. */
/* -------------------------------------------------------------------- */
else if( poODS->GetAccess() == GA_ReadOnly )
{
GDALClose( poODS );
poODS = (GDALDataset *) GDALOpen( osOvrFilename, GA_Update );
if( poODS == NULL )
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* Our TIFF overview support currently only works safely if all */
/* bands are handled at the same time. */
/* -------------------------------------------------------------------- */
if( !bOvrIsAux && nBands != poDS->GetRasterCount() )
{
CPLError( CE_Failure, CPLE_NotSupported,
"Generation of overviews in external TIFF currently only"
" supported when operating on all bands.\n"
"Operation failed.\n" );
return CE_Failure;
}
/* -------------------------------------------------------------------- */
/* If a basename is provided, use it to override the internal */
/* overview filename. */
/* -------------------------------------------------------------------- */
if( pszBasename == NULL && osOvrFilename.length() == 0 )
pszBasename = poDS->GetDescription();
if( pszBasename != NULL )
{
if( bOvrIsAux )
osOvrFilename.Printf( "%s.aux", pszBasename );
else
osOvrFilename.Printf( "%s.ovr", pszBasename );
}
/* -------------------------------------------------------------------- */
/* Establish which of the overview levels we already have, and */
/* which are new. We assume that band 1 of the file is */
/* representative. */
/* -------------------------------------------------------------------- */
int nNewOverviews, *panNewOverviewList = NULL;
GDALRasterBand *poBand = poDS->GetRasterBand( 1 );
nNewOverviews = 0;
panNewOverviewList = (int *) CPLCalloc(sizeof(int),nOverviews);
for( i = 0; i < nOverviews && poBand != NULL; i++ )
{
int j;
for( j = 0; j < poBand->GetOverviewCount(); j++ )
{
int nOvFactor;
GDALRasterBand * poOverview = poBand->GetOverview( j );
nOvFactor = (int)
(0.5 + poBand->GetXSize() / (double) poOverview->GetXSize());
if( nOvFactor == panOverviewList[i]
|| nOvFactor == GDALOvLevelAdjust( panOverviewList[i],
poBand->GetXSize() ) )
panOverviewList[i] *= -1;
}
if( panOverviewList[i] > 0 )
panNewOverviewList[nNewOverviews++] = panOverviewList[i];
}
/* -------------------------------------------------------------------- */
/* Build band list. */
/* -------------------------------------------------------------------- */
pahBands = (GDALRasterBand **) CPLCalloc(sizeof(GDALRasterBand *),nBands);
for( i = 0; i < nBands; i++ )
pahBands[i] = poDS->GetRasterBand( panBandList[i] );
/* -------------------------------------------------------------------- */
/* Build new overviews - Imagine. Keep existing file open if */
/* we have it. But mark all overviews as in need of */
/* regeneration, since HFAAuxBuildOverviews() doesn't actually */
/* produce the imagery. */
/* -------------------------------------------------------------------- */
#ifndef WIN32CE
if( bOvrIsAux )
{
eErr = HFAAuxBuildOverviews( osOvrFilename, poDS, &poODS,
nBands, panBandList,
nNewOverviews, panNewOverviewList,
pszResampling,
pfnProgress, pProgressData );
int j;
for( j = 0; j < nOverviews; j++ )
{
if( panOverviewList[j] > 0 )
panOverviewList[j] *= -1;
}
}
/* -------------------------------------------------------------------- */
/* Build new overviews - TIFF. Close TIFF files while we */
/* operate on it. */
/* -------------------------------------------------------------------- */
else
#endif /* WIN32CE */
{
if( poODS != NULL )
{
delete poODS;
poODS = NULL;
}
eErr = GTIFFBuildOverviews( osOvrFilename, nBands, pahBands,
nNewOverviews, panNewOverviewList,
pszResampling, pfnProgress, pProgressData );
// Probe for proxy overview filename.
if( eErr == CE_Failure )
{
const char *pszProxyOvrFilename =
poDS->GetMetadataItem("FILENAME","ProxyOverviewRequest");
if( pszProxyOvrFilename != NULL )
{
osOvrFilename = pszProxyOvrFilename;
eErr = GTIFFBuildOverviews( osOvrFilename, nBands, pahBands,
nNewOverviews, panNewOverviewList,
pszResampling,
pfnProgress, pProgressData );
}
}
if( eErr == CE_None )
{
poODS = (GDALDataset *) GDALOpen( osOvrFilename, GA_Update );
if( poODS == NULL )
eErr = CE_Failure;
}
}
/* -------------------------------------------------------------------- */
/* Refresh old overviews that were listed. */
/* -------------------------------------------------------------------- */
GDALRasterBand **papoOverviewBands;
papoOverviewBands = (GDALRasterBand **)
CPLCalloc(sizeof(void*),nOverviews);
for( int iBand = 0; iBand < nBands && eErr == CE_None; iBand++ )
{
poBand = poDS->GetRasterBand( panBandList[iBand] );
nNewOverviews = 0;
for( i = 0; i < nOverviews && poBand != NULL; i++ )
{
int j;
for( j = 0; j < poBand->GetOverviewCount(); j++ )
{
int nOvFactor;
GDALRasterBand * poOverview = poBand->GetOverview( j );
int bHasNoData;
double noDataValue = poBand->GetNoDataValue(&bHasNoData);
if (bHasNoData)
poOverview->SetNoDataValue(noDataValue);
nOvFactor = (int)
(0.5 + poBand->GetXSize() / (double) poOverview->GetXSize());
if( nOvFactor == - panOverviewList[i]
|| nOvFactor == GDALOvLevelAdjust( -panOverviewList[i],
poBand->GetXSize() ) )
{
papoOverviewBands[nNewOverviews++] = poOverview;
break;
}
}
}
if( nNewOverviews > 0 )
{
eErr = GDALRegenerateOverviews( (GDALRasterBandH) poBand,
nNewOverviews,
(GDALRasterBandH*)papoOverviewBands,
pszResampling,
pfnProgress, pProgressData );
}
}
/* -------------------------------------------------------------------- */
/* Cleanup */
/* -------------------------------------------------------------------- */
CPLFree( papoOverviewBands );
CPLFree( panNewOverviewList );
CPLFree( pahBands );
/* -------------------------------------------------------------------- */
/* If we have a mask file, we need to build it's overviews */
/* too. */
/* -------------------------------------------------------------------- */
if( HaveMaskFile() && poMaskDS )
{
poMaskDS->BuildOverviews( pszResampling, nOverviews, panOverviewList,
0, NULL, pfnProgress, pProgressData );
if( bOwnMaskDS )
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 )
{
int nOverviewCount = GetOverviewCount(1);
int iOver;
for( iOver = 0; iOver < nOverviewCount; iOver++ )
{
GDALRasterBand *poBand = GetOverview( 1, iOver );
GDALDataset *poOverDS = NULL;
if( poBand != NULL )
poOverDS = poBand->GetDataset();
if (poOverDS != NULL)
{
poOverDS->oOvManager.poBaseDS = poDS;
poOverDS->oOvManager.poDS = poOverDS;
}
}
}
return eErr;
}