EVOLUTION-MANAGER

Edit File: hdf4imagedataset.cpp

/****************************************************************************** * $Id: hdf4imagedataset.cpp 27044 2014-03-16 23:41:27Z rouault $ * * Project: Hierarchical Data Format Release 4 (HDF4) * Purpose: Read subdatasets of HDF4 file. * This driver initially based on code supplied by Markus Neteler * Author: Andrey Kiselev, dron@ak4719.spb.edu * ****************************************************************************** * Copyright (c) 2002, Andrey Kiselev <dron@ak4719.spb.edu> * Copyright (c) 2009-2013, Even Rouault <even dot rouault at mines-paris dot org> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include <string.h> #include <math.h> #include "cpl_multiproc.h" #include "hdf.h" #include "mfhdf.h" #include "HdfEosDef.h" #include "gdal_priv.h" #include "cpl_string.h" #include "ogr_spatialref.h" #include "hdf4compat.h" #include "hdf4dataset.h" #include "nasakeywordhandler.h" CPL_CVSID("$Id: hdf4imagedataset.cpp 27044 2014-03-16 23:41:27Z rouault $"); CPL_C_START void GDALRegister_HDF4(void); CPL_C_END #define HDF4_SDS_MAXNAMELEN 65 // Signature to recognize files written by GDAL const char *pszGDALSignature = "Created with GDAL (http://www.remotesensing.org/gdal/)"; extern void *hHDF4Mutex; /************************************************************************/ /* ==================================================================== */ /* List of HDF-EOS Swath product types. */ /* ==================================================================== */ /************************************************************************/ enum HDF4EOSProduct { PROD_UNKNOWN, PROD_ASTER_L1A, PROD_ASTER_L1B, PROD_ASTER_L2, PROD_ASTER_L3, PROD_AST14DEM, PROD_MODIS_L1B, PROD_MODIS_L2 }; /************************************************************************/ /* ==================================================================== */ /* HDF4ImageDataset */ /* ==================================================================== */ /************************************************************************/ class HDF4ImageDataset : public HDF4Dataset { friend class HDF4ImageRasterBand; char *pszFilename; int32 hHDF4, iGR, iPal, iDataset; int32 iRank, iNumType, nAttrs, iInterlaceMode, iPalInterlaceMode, iPalDataType; int32 nComps, nPalEntries; int32 aiDimSizes[H4_MAX_VAR_DIMS]; int iXDim, iYDim, iBandDim, i4Dim; int nBandCount; char **papszLocalMetadata; #define N_COLOR_ENTRIES 256 uint8 aiPaletteData[N_COLOR_ENTRIES][3]; // XXX: Static array for now char szName[HDF4_SDS_MAXNAMELEN]; char *pszSubdatasetName; char *pszFieldName; GDALColorTable *poColorTable; OGRSpatialReference oSRS; int bHasGeoTransform; double adfGeoTransform[6]; char *pszProjection; char *pszGCPProjection; GDAL_GCP *pasGCPList; int nGCPCount; HDF4DatasetType iDatasetType; int32 iSDS; int nBlockPreferredXSize; int nBlockPreferredYSize; bool bReadTile; void ToGeoref( double *, double * ); void GetImageDimensions( char * ); void GetSwatAttrs( int32 ); void GetGridAttrs( int32 hGD ); void CaptureNRLGeoTransform(void); void CaptureL1GMTLInfo(void); void CaptureCoastwatchGCTPInfo(void); void ProcessModisSDSGeolocation(void); int ProcessSwathGeolocation( int32, char ** ); static long USGSMnemonicToCode( const char* ); static void ReadCoordinates( const char*, double*, double* ); public: HDF4ImageDataset(); ~HDF4ImageDataset(); static GDALDataset *Open( GDALOpenInfo * ); static GDALDataset *Create( const char * pszFilename, int nXSize, int nYSize, int nBands, GDALDataType eType, char ** papszParmList ); virtual void FlushCache( void ); CPLErr GetGeoTransform( double * padfTransform ); virtual CPLErr SetGeoTransform( double * ); const char *GetProjectionRef(); virtual CPLErr SetProjection( const char * ); virtual int GetGCPCount(); virtual const char *GetGCPProjection(); virtual const GDAL_GCP *GetGCPs(); }; /************************************************************************/ /* ==================================================================== */ /* HDF4ImageRasterBand */ /* ==================================================================== */ /************************************************************************/ class HDF4ImageRasterBand : public GDALPamRasterBand { friend class HDF4ImageDataset; int bNoDataSet; double dfNoDataValue; int bHaveScale, bHaveOffset; double dfScale; double dfOffset; CPLString osUnitType; public: HDF4ImageRasterBand( HDF4ImageDataset *, int, GDALDataType ); virtual CPLErr IReadBlock( int, int, void * ); virtual CPLErr IWriteBlock( int, int, void * ); virtual GDALColorInterp GetColorInterpretation(); virtual GDALColorTable *GetColorTable(); virtual double GetNoDataValue( int * ); virtual CPLErr SetNoDataValue( double ); virtual double GetOffset( int *pbSuccess ); virtual double GetScale( int *pbSuccess ); virtual const char *GetUnitType(); }; /************************************************************************/ /* HDF4ImageRasterBand() */ /************************************************************************/ HDF4ImageRasterBand::HDF4ImageRasterBand( HDF4ImageDataset *poDS, int nBand, GDALDataType eType ) { this->poDS = poDS; this->nBand = nBand; eDataType = eType; bNoDataSet = FALSE; dfNoDataValue = -9999.0; bHaveScale = bHaveOffset = FALSE; dfScale = 1.0; dfOffset = 0.0; nBlockXSize = poDS->GetRasterXSize(); // Aim for a block of about 1000000 pixels. Chunking up substantially // improves performance in some situations. For now we only chunk up for // SDS and EOS based datasets since other variations haven't been tested. #2208 if( poDS->iDatasetType == HDF4_SDS || poDS->iDatasetType == HDF4_EOS) { int nChunkSize = atoi( CPLGetConfigOption("HDF4_BLOCK_PIXELS", "1000000") ); nBlockYSize = nChunkSize / poDS->GetRasterXSize(); nBlockYSize = MAX(1,MIN(nBlockYSize,poDS->GetRasterYSize())); } else { nBlockYSize = 1; } /* HDF4_EOS:EOS_GRID case. We ensure that the block size matches */ /* the raster width, as the IReadBlock() code can only handle multiple */ /* blocks per row */ if ( poDS->nBlockPreferredXSize == nBlockXSize && poDS->nBlockPreferredYSize > 0 ) { if (poDS->nBlockPreferredYSize == 1) { /* Avoid defaulting to tile reading when the preferred height is 1 */ /* as it leads to very poor performance with : */ /* ftp://e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOLT/MOD13Q1.005/2006.06.10/MOD13Q1.A2006161.h21v13.005.2008234103220.hd */ poDS->bReadTile = FALSE; } else { nBlockYSize = poDS->nBlockPreferredYSize; } } /* -------------------------------------------------------------------- */ /* We need to avoid using the tile based api if we aren't */ /* matching the tile size. (#4672) */ /* -------------------------------------------------------------------- */ if( nBlockXSize != poDS->nBlockPreferredXSize || nBlockYSize != poDS->nBlockPreferredYSize ) { poDS->bReadTile = FALSE; } } /************************************************************************/ /* IReadBlock() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::IReadBlock( int nBlockXOff, int nBlockYOff, void * pImage ) { HDF4ImageDataset *poGDS = (HDF4ImageDataset *) poDS; int32 aiStart[H4_MAX_NC_DIMS], aiEdges[H4_MAX_NC_DIMS]; CPLErr eErr = CE_None; CPLMutexHolderD(&hHDF4Mutex); if( poGDS->eAccess == GA_Update ) { memset( pImage, 0, nBlockXSize * nBlockYSize * GDALGetDataTypeSize(eDataType) / 8 ); return CE_None; } /* -------------------------------------------------------------------- */ /* Work out some block oriented details. */ /* -------------------------------------------------------------------- */ int nYOff = nBlockYOff * nBlockYSize; int nYSize = MIN(nYOff + nBlockYSize, poDS->GetRasterYSize()) - nYOff; CPLAssert( nBlockXOff == 0 ); /* -------------------------------------------------------------------- */ /* HDF files with external data files, such as some landsat */ /* products (eg. data/hdf/L1G) need to be told what directory */ /* to look in to find the external files. Normally this is the */ /* directory holding the hdf file. */ /* -------------------------------------------------------------------- */ HXsetdir(CPLGetPath(poGDS->pszFilename)); /* -------------------------------------------------------------------- */ /* Handle different configurations. */ /* -------------------------------------------------------------------- */ switch ( poGDS->iDatasetType ) { case HDF4_SDS: { /* We avoid doing SDselect() / SDendaccess() for each block access */ /* as this is very slow when zlib compression is used */ if (poGDS->iSDS == FAIL) poGDS->iSDS = SDselect( poGDS->hSD, poGDS->iDataset ); /* HDF rank: A rank 2 dataset is an image read in scan-line order (2D). A rank 3 dataset is a series of images which are read in an image at a time to form a volume. A rank 4 dataset may be thought of as a series of volumes. The "aiStart" array specifies the multi-dimensional index of the starting corner of the hyperslab to read. The values are zero based. The "edge" array specifies the number of values to read along each dimension of the hyperslab. The "iStride" array allows for sub-sampling along each dimension. If a iStride value is specified for a dimension, that many values will be skipped over when reading along that dimension. Specifying iStride = NULL in the C interface or iStride = 1 in either interface specifies contiguous reading of data. If the iStride values are set to 0, SDreaddata returns FAIL (or -1). No matter what iStride value is provided, data is always placed contiguously in buffer. */ switch ( poGDS->iRank ) { case 4: // 4Dim: volume-time // FIXME: needs sample file. Does not work currently. aiStart[3] = 0/* range: 0--aiDimSizes[3]-1 */; aiEdges[3] = 1; aiStart[2] = 0/* range: 0--aiDimSizes[2]-1 */; aiEdges[2] = 1; aiStart[1] = nYOff; aiEdges[1] = nYSize; aiStart[0] = nBlockXOff; aiEdges[0] = nBlockXSize; break; case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 1: //1Dim: aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } // Read HDF SDS array if( SDreaddata( poGDS->iSDS, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "SDreaddata() failed for block." ); eErr = CE_Failure; } //SDendaccess( iSDS ); } break; case HDF4_GR: { int nDataTypeSize = GDALGetDataTypeSize(poGDS->GetDataType(poGDS->iNumType)) / 8; GByte *pbBuffer = (GByte *) CPLMalloc(nBlockXSize*nBlockYSize*poGDS->iRank*nBlockYSize); int i, j; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if( GRreadimage(poGDS->iGR, aiStart, NULL, aiEdges, pbBuffer) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GRreaddata() failed for block." ); eErr = CE_Failure; } else { for ( i = 0, j = (nBand - 1) * nDataTypeSize; i < nBlockXSize * nDataTypeSize; i += nDataTypeSize, j += poGDS->nBands * nDataTypeSize ) memcpy( (GByte *)pImage + i, pbBuffer + j, nDataTypeSize ); } CPLFree( pbBuffer ); } break; case HDF4_EOS: { switch ( poGDS->iSubdatasetType ) { case H4ST_EOS_GRID: { int32 hGD; hGD = GDattach( poGDS->hHDF4, poGDS->pszSubdatasetName ); switch ( poGDS->iRank ) { case 4: // 4Dim: volume aiStart[poGDS->i4Dim] = (nBand - 1) / poGDS->aiDimSizes[poGDS->iBandDim]; aiEdges[poGDS->i4Dim] = 1; aiStart[poGDS->iBandDim] = (nBand - 1) % poGDS->aiDimSizes[poGDS->iBandDim]; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } /* Ensure that we don't overlap the bottom or right edges */ /* of the dataset in order to use the GDreadtile() API */ if ( poGDS->bReadTile && (nBlockXOff + 1) * nBlockXSize <= nRasterXSize && (nBlockYOff + 1) * nBlockYSize <= nRasterYSize ) { int32 tilecoords[] = { nBlockYOff , nBlockXOff }; if( GDreadtile( hGD, poGDS->pszFieldName , tilecoords , pImage ) != 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GDreadtile() failed for block." ); eErr = CE_Failure; } } else if( GDreadfield( hGD, poGDS->pszFieldName, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GDreadfield() failed for block." ); eErr = CE_Failure; } GDdetach( hGD ); } break; case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: { int32 hSW; hSW = SWattach( poGDS->hHDF4, poGDS->pszSubdatasetName ); switch ( poGDS->iRank ) { case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } if( SWreadfield( hSW, poGDS->pszFieldName, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "SWreadfield() failed for block." ); eErr = CE_Failure; } SWdetach( hSW ); } break; default: break; } } break; default: eErr = CE_Failure; break; } return eErr; } /************************************************************************/ /* IWriteBlock() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::IWriteBlock( int nBlockXOff, int nBlockYOff, void * pImage ) { HDF4ImageDataset *poGDS = (HDF4ImageDataset *)poDS; int32 aiStart[H4_MAX_NC_DIMS], aiEdges[H4_MAX_NC_DIMS]; CPLErr eErr = CE_None; CPLMutexHolderD(&hHDF4Mutex); CPLAssert( poGDS != NULL && nBlockXOff == 0 && nBlockYOff >= 0 && pImage != NULL ); /* -------------------------------------------------------------------- */ /* Work out some block oriented details. */ /* -------------------------------------------------------------------- */ int nYOff = nBlockYOff * nBlockYSize; int nYSize = MIN(nYOff + nBlockYSize, poDS->GetRasterYSize()) - nYOff; CPLAssert( nBlockXOff == 0 ); /* -------------------------------------------------------------------- */ /* Process based on rank. */ /* -------------------------------------------------------------------- */ switch ( poGDS->iRank ) { case 3: { int32 iSDS = SDselect( poGDS->hSD, poGDS->iDataset ); aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if ( (SDwritedata( iSDS, aiStart, NULL, aiEdges, (VOIDP)pImage )) < 0 ) eErr = CE_Failure; SDendaccess( iSDS ); } break; case 2: { int32 iSDS = SDselect( poGDS->hSD, nBand - 1 ); aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if ( (SDwritedata( iSDS, aiStart, NULL, aiEdges, (VOIDP)pImage )) < 0 ) eErr = CE_Failure; SDendaccess( iSDS ); } break; default: eErr = CE_Failure; break; } return eErr; } /************************************************************************/ /* GetColorTable() */ /************************************************************************/ GDALColorTable *HDF4ImageRasterBand::GetColorTable() { HDF4ImageDataset *poGDS = (HDF4ImageDataset *) poDS; return poGDS->poColorTable; } /************************************************************************/ /* GetColorInterpretation() */ /************************************************************************/ GDALColorInterp HDF4ImageRasterBand::GetColorInterpretation() { HDF4ImageDataset *poGDS = (HDF4ImageDataset *) poDS; if ( poGDS->iDatasetType == HDF4_SDS ) return GCI_GrayIndex; else if ( poGDS->iDatasetType == HDF4_GR ) { if ( poGDS->poColorTable != NULL ) return GCI_PaletteIndex; else if ( poGDS->nBands != 1 ) { if ( nBand == 1 ) return GCI_RedBand; else if ( nBand == 2 ) return GCI_GreenBand; else if ( nBand == 3 ) return GCI_BlueBand; else if ( nBand == 4 ) return GCI_AlphaBand; else return GCI_Undefined; } else return GCI_GrayIndex; } else return GCI_GrayIndex; } /************************************************************************/ /* GetNoDataValue() */ /************************************************************************/ double HDF4ImageRasterBand::GetNoDataValue( int * pbSuccess ) { if( pbSuccess ) *pbSuccess = bNoDataSet; return dfNoDataValue; } /************************************************************************/ /* SetNoDataValue() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::SetNoDataValue( double dfNoData ) { bNoDataSet = TRUE; dfNoDataValue = dfNoData; return CE_None; } /************************************************************************/ /* GetUnitType() */ /************************************************************************/ const char *HDF4ImageRasterBand::GetUnitType() { if( osUnitType.size() > 0 ) return osUnitType; else return GDALRasterBand::GetUnitType(); } /************************************************************************/ /* GetOffset() */ /************************************************************************/ double HDF4ImageRasterBand::GetOffset( int *pbSuccess ) { if( bHaveOffset ) { if( pbSuccess != NULL ) *pbSuccess = TRUE; return dfOffset; } else return GDALRasterBand::GetOffset( pbSuccess ); } /************************************************************************/ /* GetScale() */ /************************************************************************/ double HDF4ImageRasterBand::GetScale( int *pbSuccess ) { if( bHaveScale ) { if( pbSuccess != NULL ) *pbSuccess = TRUE; return dfScale; } else return GDALRasterBand::GetScale( pbSuccess ); } /************************************************************************/ /* ==================================================================== */ /* HDF4ImageDataset */ /* ==================================================================== */ /************************************************************************/ /************************************************************************/ /* HDF4ImageDataset() */ /************************************************************************/ HDF4ImageDataset::HDF4ImageDataset() { pszFilename = NULL; hHDF4 = 0; iGR = 0; iPal = 0; iDataset = 0; iRank = 0; iNumType = 0; nAttrs = 0; iInterlaceMode = 0; iPalInterlaceMode = 0; iPalDataType = 0; nComps = 0; nPalEntries = 0; memset(aiDimSizes, 0, sizeof(aiDimSizes)); iXDim = 0; iYDim = 0; iBandDim = -1; i4Dim = 0; nBandCount = 0; papszLocalMetadata = NULL; memset(aiPaletteData, 0, sizeof(aiPaletteData)); memset(szName, 0, sizeof(szName)); pszSubdatasetName = NULL; pszFieldName = NULL; poColorTable = NULL; bHasGeoTransform = FALSE; adfGeoTransform[0] = 0.0; adfGeoTransform[1] = 1.0; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = 0.0; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = 1.0; pszProjection = CPLStrdup( "" ); pszGCPProjection = CPLStrdup( "" ); pasGCPList = NULL; nGCPCount = 0; iDatasetType = HDF4_UNKNOWN; iSDS = FAIL; nBlockPreferredXSize = -1; nBlockPreferredYSize = -1; bReadTile = false; } /************************************************************************/ /* ~HDF4ImageDataset() */ /************************************************************************/ HDF4ImageDataset::~HDF4ImageDataset() { CPLMutexHolderD(&hHDF4Mutex); FlushCache(); if ( pszFilename ) CPLFree( pszFilename ); if ( iSDS != FAIL ) SDendaccess( iSDS ); if ( hSD > 0 ) SDend( hSD ); hSD = 0; if ( iGR > 0 ) GRendaccess( iGR ); if ( hGR > 0 ) GRend( hGR ); hGR = 0; if ( pszSubdatasetName ) CPLFree( pszSubdatasetName ); if ( pszFieldName ) CPLFree( pszFieldName ); if ( papszLocalMetadata ) CSLDestroy( papszLocalMetadata ); if ( poColorTable != NULL ) delete poColorTable; if ( pszProjection ) CPLFree( pszProjection ); if ( pszGCPProjection ) CPLFree( pszGCPProjection ); if( nGCPCount > 0 ) { for( int i = 0; i < nGCPCount; i++ ) { if ( pasGCPList[i].pszId ) CPLFree( pasGCPList[i].pszId ); if ( pasGCPList[i].pszInfo ) CPLFree( pasGCPList[i].pszInfo ); } CPLFree( pasGCPList ); } if ( hHDF4 > 0 ) { switch ( iDatasetType ) { case HDF4_EOS: switch ( iSubdatasetType ) { case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: SWclose( hHDF4 ); break; case H4ST_EOS_GRID: GDclose( hHDF4 ); default: break; } break; case HDF4_SDS: case HDF4_GR: hHDF4 = Hclose( hHDF4 ); break; default: break; } } } /************************************************************************/ /* GetGeoTransform() */ /************************************************************************/ CPLErr HDF4ImageDataset::GetGeoTransform( double * padfTransform ) { memcpy( padfTransform, adfGeoTransform, sizeof(double) * 6 ); if ( !bHasGeoTransform ) return CE_Failure; return CE_None; } /************************************************************************/ /* SetGeoTransform() */ /************************************************************************/ CPLErr HDF4ImageDataset::SetGeoTransform( double * padfTransform ) { bHasGeoTransform = TRUE; memcpy( adfGeoTransform, padfTransform, sizeof(double) * 6 ); return CE_None; } /************************************************************************/ /* GetProjectionRef() */ /************************************************************************/ const char *HDF4ImageDataset::GetProjectionRef() { return pszProjection; } /************************************************************************/ /* SetProjection() */ /************************************************************************/ CPLErr HDF4ImageDataset::SetProjection( const char *pszNewProjection ) { if ( pszProjection ) CPLFree( pszProjection ); pszProjection = CPLStrdup( pszNewProjection ); return CE_None; } /************************************************************************/ /* GetGCPCount() */ /************************************************************************/ int HDF4ImageDataset::GetGCPCount() { return nGCPCount; } /************************************************************************/ /* GetGCPProjection() */ /************************************************************************/ const char *HDF4ImageDataset::GetGCPProjection() { if( nGCPCount > 0 ) return pszGCPProjection; else return ""; } /************************************************************************/ /* GetGCPs() */ /************************************************************************/ const GDAL_GCP *HDF4ImageDataset::GetGCPs() { return pasGCPList; } /************************************************************************/ /* FlushCache() */ /************************************************************************/ void HDF4ImageDataset::FlushCache() { int iBand; char *pszName; const char *pszValue; CPLMutexHolderD(&hHDF4Mutex); GDALDataset::FlushCache(); if( eAccess == GA_ReadOnly ) return; // Write out transformation matrix pszValue = CPLSPrintf( "%f, %f, %f, %f, %f, %f", adfGeoTransform[0], adfGeoTransform[1], adfGeoTransform[2], adfGeoTransform[3], adfGeoTransform[4], adfGeoTransform[5] ); if ( (SDsetattr( hSD, "TransformationMatrix", DFNT_CHAR8, strlen(pszValue) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write transformation matrix to output file" ); } // Write out projection if ( pszProjection != NULL && !EQUAL( pszProjection, "" ) ) { if ( (SDsetattr( hSD, "Projection", DFNT_CHAR8, strlen(pszProjection) + 1, pszProjection )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write projection information to output file"); } } // Store all metadata from source dataset as HDF attributes if( GetMetadata() ) { char **papszMeta = GetMetadata(); while ( *papszMeta ) { pszName = NULL; pszValue = CPLParseNameValue( *papszMeta++, &pszName ); if ( pszName != NULL && (SDsetattr( hSD, pszName, DFNT_CHAR8, strlen(pszValue) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write metadata information to output file"); } CPLFree( pszName ); } } // Write out NoData values for ( iBand = 1; iBand <= nBands; iBand++ ) { HDF4ImageRasterBand *poBand = (HDF4ImageRasterBand *)GetRasterBand(iBand); if ( poBand->bNoDataSet ) { pszName = CPLStrdup( CPLSPrintf( "NoDataValue%d", iBand ) ); pszValue = CPLSPrintf( "%f", poBand->dfNoDataValue ); if ( (SDsetattr( hSD, pszName, DFNT_CHAR8, strlen(pszValue) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write NoData value for band %d " "to output file", iBand); } CPLFree( pszName ); } } // Write out band descriptions for ( iBand = 1; iBand <= nBands; iBand++ ) { HDF4ImageRasterBand *poBand = (HDF4ImageRasterBand *)GetRasterBand(iBand); pszName = CPLStrdup( CPLSPrintf( "BandDesc%d", iBand ) ); pszValue = poBand->GetDescription(); if ( pszValue != NULL && !EQUAL( pszValue, "" ) ) { if ( (SDsetattr( hSD, pszName, DFNT_CHAR8, strlen(pszValue) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write band's %d description to output file", iBand); } } CPLFree( pszName ); } } /************************************************************************/ /* USGSMnemonicToCode() */ /************************************************************************/ long HDF4ImageDataset::USGSMnemonicToCode( const char* pszMnemonic ) { if ( EQUAL(pszMnemonic, "UTM") ) return 1L; else if ( EQUAL(pszMnemonic, "LAMCC") ) return 4L; else if ( EQUAL(pszMnemonic, "PS") ) return 6L; else if ( EQUAL(pszMnemonic, "PC") ) return 7L; else if ( EQUAL(pszMnemonic, "TM") ) return 9L; else if ( EQUAL(pszMnemonic, "EQRECT") ) return 17L; else if ( EQUAL(pszMnemonic, "OM") ) return 20L; else if ( EQUAL(pszMnemonic, "SOM") ) return 22L; else return 1L; // UTM by default } /************************************************************************/ /* ToGeoref() */ /************************************************************************/ void HDF4ImageDataset::ToGeoref( double *pdfGeoX, double *pdfGeoY ) { OGRCoordinateTransformation *poTransform = NULL; OGRSpatialReference *poLatLong = NULL; poLatLong = oSRS.CloneGeogCS(); poTransform = OGRCreateCoordinateTransformation( poLatLong, &oSRS ); if( poTransform != NULL ) poTransform->Transform( 1, pdfGeoX, pdfGeoY, NULL ); if( poTransform != NULL ) delete poTransform; if( poLatLong != NULL ) delete poLatLong; } /************************************************************************/ /* ReadCoordinates() */ /************************************************************************/ void HDF4ImageDataset::ReadCoordinates( const char *pszString, double *pdfX, double *pdfY ) { char **papszStrList; papszStrList = CSLTokenizeString2( pszString, ", ", 0 ); *pdfX = CPLAtof( papszStrList[0] ); *pdfY = CPLAtof( papszStrList[1] ); CSLDestroy( papszStrList ); } /************************************************************************/ /* CaptureL1GMTLInfo() */ /************************************************************************/ /* FILE L71002025_02520010722_M_MTL.L1G GROUP = L1_METADATA_FILE ... GROUP = PRODUCT_METADATA PRODUCT_TYPE = "L1G" PROCESSING_SOFTWARE = "IAS_5.1" EPHEMERIS_TYPE = "DEFINITIVE" SPACECRAFT_ID = "Landsat7" SENSOR_ID = "ETM+" ACQUISITION_DATE = 2001-07-22 WRS_PATH = 002 STARTING_ROW = 025 ENDING_ROW = 025 BAND_COMBINATION = "12345--7-" PRODUCT_UL_CORNER_LAT = 51.2704805 PRODUCT_UL_CORNER_LON = -53.8914311 PRODUCT_UR_CORNER_LAT = 50.8458100 PRODUCT_UR_CORNER_LON = -50.9869091 PRODUCT_LL_CORNER_LAT = 49.6960897 PRODUCT_LL_CORNER_LON = -54.4047933 PRODUCT_LR_CORNER_LAT = 49.2841436 PRODUCT_LR_CORNER_LON = -51.5900428 PRODUCT_UL_CORNER_MAPX = 298309.894 PRODUCT_UL_CORNER_MAPY = 5683875.631 PRODUCT_UR_CORNER_MAPX = 500921.624 PRODUCT_UR_CORNER_MAPY = 5632678.683 PRODUCT_LL_CORNER_MAPX = 254477.193 PRODUCT_LL_CORNER_MAPY = 5510407.880 PRODUCT_LR_CORNER_MAPX = 457088.923 PRODUCT_LR_CORNER_MAPY = 5459210.932 PRODUCT_SAMPLES_REF = 6967 PRODUCT_LINES_REF = 5965 BAND1_FILE_NAME = "L71002025_02520010722_B10.L1G" BAND2_FILE_NAME = "L71002025_02520010722_B20.L1G" BAND3_FILE_NAME = "L71002025_02520010722_B30.L1G" BAND4_FILE_NAME = "L71002025_02520010722_B40.L1G" BAND5_FILE_NAME = "L71002025_02520010722_B50.L1G" BAND7_FILE_NAME = "L72002025_02520010722_B70.L1G" METADATA_L1_FILE_NAME = "L71002025_02520010722_MTL.L1G" CPF_FILE_NAME = "L7CPF20010701_20010930_06" HDF_DIR_FILE_NAME = "L71002025_02520010722_HDF.L1G" END_GROUP = PRODUCT_METADATA ... GROUP = PROJECTION_PARAMETERS REFERENCE_DATUM = "NAD83" REFERENCE_ELLIPSOID = "GRS80" GRID_CELL_SIZE_PAN = 15.000000 GRID_CELL_SIZE_THM = 60.000000 GRID_CELL_SIZE_REF = 30.000000 ORIENTATION = "NOM" RESAMPLING_OPTION = "CC" MAP_PROJECTION = "UTM" END_GROUP = PROJECTION_PARAMETERS GROUP = UTM_PARAMETERS ZONE_NUMBER = 22 END_GROUP = UTM_PARAMETERS END_GROUP = L1_METADATA_FILE END */ void HDF4ImageDataset::CaptureL1GMTLInfo() { /* -------------------------------------------------------------------- */ /* Does the physical file look like it matches our expected */ /* name pattern? */ /* -------------------------------------------------------------------- */ if( strlen(pszFilename) < 8 || !EQUAL(pszFilename+strlen(pszFilename)-8,"_HDF.L1G") ) return; /* -------------------------------------------------------------------- */ /* Construct the name of the corresponding MTL file. We should */ /* likely be able to extract that from the HDF itself but I'm */ /* not sure where to find it. */ /* -------------------------------------------------------------------- */ CPLString osMTLFilename = pszFilename; osMTLFilename.resize(osMTLFilename.length() - 8); osMTLFilename += "_MTL.L1G"; /* -------------------------------------------------------------------- */ /* Ingest the MTL using the NASAKeywordHandler written for the */ /* PDS driver. */ /* -------------------------------------------------------------------- */ NASAKeywordHandler oMTL; VSILFILE *fp = VSIFOpenL( osMTLFilename, "r" ); if( fp == NULL ) return; if( !oMTL.Ingest( fp, 0 ) ) { VSIFCloseL( fp ); return; } VSIFCloseL( fp ); /* -------------------------------------------------------------------- */ /* Note: Different variation of MTL files use different group names. */ /* Check for LPGS_METADATA_FILE and L1_METADATA_FILE. */ /* -------------------------------------------------------------------- */ double dfULX, dfULY, dfLRX, dfLRY; double dfLLX, dfLLY, dfURX, dfURY; CPLString osPrefix; if( oMTL.GetKeyword( "LPGS_METADATA_FILE.PRODUCT_METADATA" ".PRODUCT_UL_CORNER_LON", NULL ) ) osPrefix = "LPGS_METADATA_FILE.PRODUCT_METADATA.PRODUCT_"; else if( oMTL.GetKeyword( "L1_METADATA_FILE.PRODUCT_METADATA" ".PRODUCT_UL_CORNER_LON", NULL ) ) osPrefix = "L1_METADATA_FILE.PRODUCT_METADATA.PRODUCT_"; else return; dfULX = atof(oMTL.GetKeyword((osPrefix+"UL_CORNER_LON").c_str(), "0" )); dfULY = atof(oMTL.GetKeyword((osPrefix+"UL_CORNER_LAT").c_str(), "0" )); dfLRX = atof(oMTL.GetKeyword((osPrefix+"LR_CORNER_LON").c_str(), "0" )); dfLRY = atof(oMTL.GetKeyword((osPrefix+"LR_CORNER_LAT").c_str(), "0" )); dfLLX = atof(oMTL.GetKeyword((osPrefix+"LL_CORNER_LON").c_str(), "0" )); dfLLY = atof(oMTL.GetKeyword((osPrefix+"LL_CORNER_LAT").c_str(), "0" )); dfURX = atof(oMTL.GetKeyword((osPrefix+"UR_CORNER_LON").c_str(), "0" )); dfURY = atof(oMTL.GetKeyword((osPrefix+"UR_CORNER_LAT").c_str(), "0" )); CPLFree( pszGCPProjection ); pszGCPProjection = CPLStrdup( "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9108\"]],AXIS[\"Lat\",NORTH],AXIS[\"Long\",EAST],AUTHORITY[\"EPSG\",\"4326\"]]" ); nGCPCount = 4; pasGCPList = (GDAL_GCP *) CPLCalloc( nGCPCount, sizeof( GDAL_GCP ) ); GDALInitGCPs( nGCPCount, pasGCPList ); pasGCPList[0].dfGCPX = dfULX; pasGCPList[0].dfGCPY = dfULY; pasGCPList[0].dfGCPPixel = 0.0; pasGCPList[0].dfGCPLine = 0.0; pasGCPList[1].dfGCPX = dfURX; pasGCPList[1].dfGCPY = dfURY; pasGCPList[1].dfGCPPixel = GetRasterXSize(); pasGCPList[1].dfGCPLine = 0.0; pasGCPList[2].dfGCPX = dfLLX; pasGCPList[2].dfGCPY = dfLLY; pasGCPList[2].dfGCPPixel = 0.0; pasGCPList[2].dfGCPLine = GetRasterYSize(); pasGCPList[3].dfGCPX = dfLRX; pasGCPList[3].dfGCPY = dfLRY; pasGCPList[3].dfGCPPixel = GetRasterXSize(); pasGCPList[3].dfGCPLine = GetRasterYSize(); } /************************************************************************/ /* CaptureNRLGeoTransform() */ /* */ /* Capture geotransform and coordinate system from NRL (Naval */ /* Research Laboratory, Stennis Space Center) metadata. */ /************************************************************************/ /* Example metadata: Metadata: createTime=Fri Oct 1 18:00:07 2004 createSoftware=APS v2.8.4 createPlatform=i686-pc-linux-gnu createAgency=Naval Research Laboratory, Stennis Space Center sensor=MODIS sensorPlatform=TERRA-AM sensorAgency=NASA sensorType=whiskbroom sensorSpectrum=Visible/Thermal sensorNumberOfBands=36 sensorBandUnits=nano meters sensorBands=645, 858.5, 469, 555, 1240, 1640, 2130, 412.5, 443, 488, 531, 551, 667, 678, 748, 869.5, 905, 936, 940, 3750, 3959, 3959, 4050, 4465.5, 4515.5, 13 75, 6715, 7325, 8550, 9730, 11130, 12020, 13335, 13635, 13935, 14235 sensorBandWidths=50, 35, 20, 20, 20, 24, 50, 15, 10, 10, 10, 10, 10, 10, 10, 1 5, 30, 10, 50, 90, 60, 60, 60, 65, 67, 30, 360, 300, 300, 300, 500, 500, 300, 30 0, 300, 300 sensorNominalAltitudeInKM=705 sensorScanWidthInKM=2330 sensorResolutionInKM=1 sensorPlatformType=Polar-orbiting Satellite timeStartYear=2004 timeStartDay=275 timeStartTime=56400000 timeStart=Fri Oct 1 15:40:00 2004 timeDayNight=Day timeEndYear=2004 timeEndDay=275 timeEndTime=56700000 timeEnd=Fri Oct 1 15:45:00 2004 inputMasks=HIGLINT,CLDICE,LAND,ATMFAIL inputMasksInt=523 processedVersion=1.2 file=MODAM2004275.L3_Mosaic_NOAA_GMX fileTitle=NRL Level-3 Mosaic fileVersion=3.0 fileClassification=UNCLASSIFIED fileStatus=EXPERIMENTAL navType=mapped mapProjectionSystem=NRL(USGS) mapProjection=Gomex mapUpperLeft=31, -99 mapUpperRight=31, -79 mapLowerLeft=14.9844128048645, -99 mapLowerRight=14.9844128048645, -79 inputFiles=MODAM2004275154000.L3_NOAA_GMX ... */ void HDF4ImageDataset::CaptureNRLGeoTransform() { /* -------------------------------------------------------------------- */ /* Collect the four corners. */ /* -------------------------------------------------------------------- */ double adfXY[8]; static const char *apszItems[] = { "mapUpperLeft", "mapUpperRight", "mapLowerLeft", "mapLowerRight" }; int iCorner; int bLLPossible = TRUE; for( iCorner = 0; iCorner < 4; iCorner++ ) { const char *pszCornerLoc = CSLFetchNameValue( papszGlobalMetadata, apszItems[iCorner] ); if( pszCornerLoc == NULL ) return; char **papszTokens = CSLTokenizeStringComplex( pszCornerLoc, ",", FALSE, FALSE ); if( CSLCount( papszTokens ) != 2 ) return; adfXY[iCorner*2+0] = CPLAtof( papszTokens[1] ); adfXY[iCorner*2+1] = CPLAtof( papszTokens[0] ); if( adfXY[iCorner*2+0] < -360 || adfXY[iCorner*2+0] > 360 || adfXY[iCorner*2+1] < -90 || adfXY[iCorner*2+1] > 90 ) bLLPossible = FALSE; CSLDestroy( papszTokens ); } /* -------------------------------------------------------------------- */ /* Does this look like nice clean "northup" lat/long data? */ /* -------------------------------------------------------------------- */ if( adfXY[0*2+0] == adfXY[2*2+0] && adfXY[0*2+1] == adfXY[1*2+1] && bLLPossible ) { bHasGeoTransform = TRUE; adfGeoTransform[0] = adfXY[0*2+0]; adfGeoTransform[1] = (adfXY[1*2+0] - adfXY[0*2+0]) / nRasterXSize; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = adfXY[0*2+1]; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = (adfXY[2*2+1] - adfXY[0*2+1]) / nRasterYSize; oSRS.SetWellKnownGeogCS( "WGS84" ); CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); } /* -------------------------------------------------------------------- */ /* Can we find the USGS Projection Parameters? */ /* -------------------------------------------------------------------- */ int bGotGCTPProjection = FALSE; int iSDSIndex = FAIL, iSDS = FAIL; const char *mapProjection = CSLFetchNameValue( papszGlobalMetadata, "mapProjection" ); if( mapProjection ) iSDSIndex = SDnametoindex( hSD, mapProjection ); if( iSDSIndex != FAIL ) iSDS = SDselect( hSD, iSDSIndex ); if( iSDS != FAIL ) { char szName[HDF4_SDS_MAXNAMELEN]; int32 iRank, iNumType, nAttrs; int32 aiDimSizes[H4_MAX_VAR_DIMS]; double adfGCTP[29]; int32 aiStart[H4_MAX_NC_DIMS], aiEdges[H4_MAX_NC_DIMS]; aiStart[0] = 0; aiEdges[0] = 29; if( SDgetinfo( iSDS, szName, &iRank, aiDimSizes, &iNumType, &nAttrs) == 0 && iNumType == DFNT_FLOAT64 && iRank == 1 && aiDimSizes[0] >= 29 && SDreaddata( iSDS, aiStart, NULL, aiEdges, adfGCTP ) == 0 && oSRS.importFromUSGS( (long) adfGCTP[1], (long) adfGCTP[2], adfGCTP+4, (long) adfGCTP[3] ) == OGRERR_NONE ) { CPLDebug( "HDF4Image", "GCTP Parms = %g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g", adfGCTP[0], adfGCTP[1], adfGCTP[2], adfGCTP[3], adfGCTP[4], adfGCTP[5], adfGCTP[6], adfGCTP[7], adfGCTP[8], adfGCTP[9], adfGCTP[10], adfGCTP[11], adfGCTP[12], adfGCTP[13], adfGCTP[14], adfGCTP[15], adfGCTP[16], adfGCTP[17], adfGCTP[18], adfGCTP[19], adfGCTP[20], adfGCTP[21], adfGCTP[22], adfGCTP[23], adfGCTP[24], adfGCTP[25], adfGCTP[26], adfGCTP[27], adfGCTP[28] ); CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); bGotGCTPProjection = TRUE; } SDendaccess(iSDS); } /* -------------------------------------------------------------------- */ /* If we derived a GCTP based projection, then we need to */ /* transform the lat/long corners into this projection and use */ /* them to establish the geotransform. */ /* -------------------------------------------------------------------- */ if( bLLPossible && bGotGCTPProjection ) { double dfULX, dfULY, dfLRX, dfLRY; OGRSpatialReference oWGS84; oWGS84.SetWellKnownGeogCS( "WGS84" ); OGRCoordinateTransformation *poCT = OGRCreateCoordinateTransformation( &oWGS84, &oSRS ); dfULX = adfXY[0*2+0]; dfULY = adfXY[0*2+1]; dfLRX = adfXY[3*2+0]; dfLRY = adfXY[3*2+1]; if( poCT->Transform( 1, &dfULX, &dfULY ) && poCT->Transform( 1, &dfLRX, &dfLRY ) ) { bHasGeoTransform = TRUE; adfGeoTransform[0] = dfULX; adfGeoTransform[1] = (dfLRX - dfULX) / nRasterXSize; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = dfULY; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = (dfLRY - dfULY) / nRasterYSize; } delete poCT; } } /************************************************************************/ /* CaptureCoastwatchGCTPInfo() */ /************************************************************************/ /* Example Metadata from: http://coastwatch.noaa.gov/interface/most_recent.php?sensor=MODIS&product=chlorNASA Definitions at: http://coastwatch.noaa.gov/cw_form_hdf.html Metadata: satellite=Aqua sensor=MODIS origin=USDOC/NOAA/NESDIS CoastWatch history=PGE01:4.1.12;PGE02:4.3.1.12;SeaDAS Version ?.?, MSl12 4.0.2, Linux 2.4.21-27.0.1.EL cwregister GulfOfMexicoSinusoidal.hdf MODSCW.P2005023.1835.swath09.hdf MODSCW.P2005023.1835.GM16.mapped09.hdf cwgraphics MODSCW.P2005023.1835.GM16.closest.hdf cwmath --template chlor_a --expr chlor_a=select(and(l2_flags,514)!=0,nan,chlor_a) /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwmath --template latitude --expr latitude=latitude /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwmath --template longitude --expr longitude=longitude /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwhdf_version=3.2 pass_type=day pass_date=12806 start_time=66906 temporal_extent=298 projection_type=mapped projection=Sinusoidal gctp_sys=16 gctp_zone=62 gctp_parm=6378137, 0, 0, 0, -89000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 gctp_datum=12 et_affine=0, -1008.74836097881, 1008.74836097881, 0, -953126.102425113, 3447041.10282512 rows=1540 cols=2000 polygon_latitude=31, 31, 31, 31, 31, 27.5095879249529, 24.0191758499058, 20.5287637748587, 17.0383516998116, 17.0383516998116, 17.0383516998116, 17.0383516998116, 17.0383516998116, 20.5287637748587, 24.0191758499058, 27.5095879249529, 31 polygon_longitude=-99, -93.7108573344442, -88.4217146688883, -83.1325720033325, -77.8434293377767, -78.217853417453, -78.5303805448579, -78.7884829057512, -78.9979508907244, -83.7397542896832, -88.481557688642, -93.2233610876007, -97.9651644865595, -98.1529175079091, -98.3842631146439, -98.664391423662, -99 orbit_type=ascending raster_type=RasterPixelIsArea swath_sync_lines=1 */ void HDF4ImageDataset::CaptureCoastwatchGCTPInfo() { if( CSLFetchNameValue( papszGlobalMetadata, "gctp_sys" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_zone" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_parm" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_datum" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "et_affine" ) == NULL ) return; /* -------------------------------------------------------------------- */ /* Grab USGS/GCTP Parameters. */ /* -------------------------------------------------------------------- */ int nSys, nZone, nDatum, iParm; double adfParms[15]; char **papszTokens; nSys = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_sys" ) ); nZone = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_zone" ) ); nDatum = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_datum" ) ); papszTokens = CSLTokenizeStringComplex( CSLFetchNameValue( papszGlobalMetadata, "gctp_parm" ), ",", FALSE, FALSE ); if( CSLCount(papszTokens) < 15 ) return; for( iParm = 0; iParm < 15; iParm++ ) adfParms[iParm] = CPLAtof( papszTokens[iParm] ); CSLDestroy( papszTokens ); /* -------------------------------------------------------------------- */ /* Convert into an SRS. */ /* -------------------------------------------------------------------- */ if( oSRS.importFromUSGS( nSys, nZone, adfParms, nDatum ) != OGRERR_NONE ) return; CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); /* -------------------------------------------------------------------- */ /* Capture the affine transform info. */ /* -------------------------------------------------------------------- */ papszTokens = CSLTokenizeStringComplex( CSLFetchNameValue( papszGlobalMetadata, "et_affine" ), ",", FALSE, FALSE ); if( CSLCount(papszTokens) != 6 ) return; // We don't seem to have proper ef_affine docs so I don't // know which of these two coefficients goes where. if( CPLAtof(papszTokens[0]) != 0.0 || CPLAtof(papszTokens[3]) != 0.0 ) return; bHasGeoTransform = TRUE; adfGeoTransform[0] = CPLAtof( papszTokens[4] ); adfGeoTransform[1] = CPLAtof( papszTokens[2] ); adfGeoTransform[2] = 0.0; adfGeoTransform[3] = CPLAtof( papszTokens[5] ); adfGeoTransform[4] = 0.0; adfGeoTransform[5] = CPLAtof( papszTokens[1] ); // Middle of pixel adjustment. adfGeoTransform[0] -= adfGeoTransform[1] * 0.5; adfGeoTransform[3] -= adfGeoTransform[5] * 0.5; } /************************************************************************/ /* GetImageDimensions() */ /************************************************************************/ void HDF4ImageDataset::GetImageDimensions( char *pszDimList ) { char **papszDimList = CSLTokenizeString2( pszDimList, ",", CSLT_HONOURSTRINGS ); int i, nDimCount = CSLCount( papszDimList ); // TODO: check whether nDimCount is > 1 and do something if it isn't. // Search for the "Band" word in the name of dimension // or take the first one as a number of bands if ( iRank == 2 ) nBandCount = 1; else { for ( i = 0; i < nDimCount; i++ ) { if ( strstr( papszDimList[i], "band" ) ) { iBandDim = i; nBandCount = aiDimSizes[i]; // Handle 4D datasets if ( iRank > 3 && i < nDimCount - 1 ) { // FIXME: is there a better way to search for // the 4th dimension? i4Dim = i + 1; nBandCount *= aiDimSizes[i4Dim]; } break; } } } // Search for the starting "X" and "Y" in the names or take // the last two dimensions as X and Y sizes iXDim = nDimCount - 1; iYDim = nDimCount - 2; for ( i = 0; i < nDimCount; i++ ) { if ( EQUALN( papszDimList[i], "X", 1 ) && iBandDim != i ) iXDim = i; else if ( EQUALN( papszDimList[i], "Y", 1 ) && iBandDim != i ) iYDim = i; } // If didn't get a band dimension yet, but have an extra // dimension, use it as the band dimension. if ( iRank > 2 && iBandDim == -1 ) { if( iXDim != 0 && iYDim != 0 ) iBandDim = 0; else if( iXDim != 1 && iYDim != 1 ) iBandDim = 1; else if( iXDim != 2 && iYDim != 2 ) iBandDim = 2; nBandCount = aiDimSizes[iBandDim]; } CSLDestroy( papszDimList ); } /************************************************************************/ /* GetSwatAttrs() */ /************************************************************************/ void HDF4ImageDataset::GetSwatAttrs( int32 hSW ) { /* -------------------------------------------------------------------- */ /* At the start we will fetch the global HDF attributes. */ /* -------------------------------------------------------------------- */ int32 hDummy; EHidinfo( hHDF4, &hDummy, &hSD ); ReadGlobalAttributes( hSD ); papszLocalMetadata = CSLDuplicate( papszGlobalMetadata ); /* -------------------------------------------------------------------- */ /* Fetch the esoteric HDF-EOS attributes then. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if ( SWinqattrs( hSW, NULL, &nStrBufSize ) > 0 && nStrBufSize > 0 ) { char *pszAttrList; char **papszAttributes; int i, nAttrs; pszAttrList = (char *)CPLMalloc( nStrBufSize + 1 ); SWinqattrs( hSW, pszAttrList, &nStrBufSize ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of attributes in swath \"%s\": %s", pszFieldName, pszAttrList ); #endif papszAttributes = CSLTokenizeString2( pszAttrList, ",", CSLT_HONOURSTRINGS ); nAttrs = CSLCount( papszAttributes ); for ( i = 0; i < nAttrs; i++ ) { int32 iNumType, nValues; void *pData = NULL; char *pszTemp = NULL; SWattrinfo( hSW, papszAttributes[i], &iNumType, &nValues ); if ( iNumType == DFNT_CHAR8 || iNumType == DFNT_UCHAR8 ) pData = CPLMalloc( (nValues + 1) * GetDataTypeSize(iNumType) ); else pData = CPLMalloc( nValues * GetDataTypeSize(iNumType) ); SWreadattr( hSW, papszAttributes[i], pData ); if ( iNumType == DFNT_CHAR8 || iNumType == DFNT_UCHAR8 ) { ((char *)pData)[nValues] = '\0'; papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], (const char *) pData ); } else { pszTemp = SPrintArray( GetDataType(iNumType), pData, nValues, ", " ); papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], pszTemp ); if ( pszTemp ) CPLFree( pszTemp ); } if ( pData ) CPLFree( pData ); } CSLDestroy( papszAttributes ); CPLFree( pszAttrList ); } /* -------------------------------------------------------------------- */ /* After fetching HDF-EOS specific stuff we will read the generic */ /* HDF attributes and append them to the list of metadata. */ /* -------------------------------------------------------------------- */ int32 iSDS; if ( SWsdid(hSW, pszFieldName, &iSDS) != -1 ) { int32 iRank, iNumType, iAttribute, nAttrs, nValues; char szName[HDF4_SDS_MAXNAMELEN]; int32 aiDimSizes[H4_MAX_VAR_DIMS]; if( SDgetinfo( iSDS, szName, &iRank, aiDimSizes, &iNumType, &nAttrs) == 0 ) { for ( iAttribute = 0; iAttribute < nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME]; SDattrinfo( iSDS, iAttribute, szAttrName, &iNumType, &nValues ); papszLocalMetadata = TranslateHDF4Attributes( iSDS, iAttribute, szAttrName, iNumType, nValues, papszLocalMetadata ); } } } /* -------------------------------------------------------------------- */ /* Finally make the whole list visible. */ /* -------------------------------------------------------------------- */ SetMetadata( papszLocalMetadata ); } /************************************************************************/ /* GetGridAttrs() */ /************************************************************************/ void HDF4ImageDataset::GetGridAttrs( int32 hGD ) { /* -------------------------------------------------------------------- */ /* At the start we will fetch the global HDF attributes. */ /* -------------------------------------------------------------------- */ int32 hDummy; EHidinfo( hHDF4, &hDummy, &hSD ); ReadGlobalAttributes( hSD ); papszLocalMetadata = CSLDuplicate( papszGlobalMetadata ); /* -------------------------------------------------------------------- */ /* Fetch the esoteric HDF-EOS attributes then. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if ( GDinqattrs( hGD, NULL, &nStrBufSize ) > 0 && nStrBufSize > 0 ) { char *pszAttrList; char **papszAttributes; int i, nAttrs; pszAttrList = (char *)CPLMalloc( nStrBufSize + 1 ); GDinqattrs( hGD, pszAttrList, &nStrBufSize ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of attributes in grid %s: %s", pszFieldName, pszAttrList ); #endif papszAttributes = CSLTokenizeString2( pszAttrList, ",", CSLT_HONOURSTRINGS ); nAttrs = CSLCount( papszAttributes ); for ( i = 0; i < nAttrs; i++ ) { int32 iNumType, nValues; void *pData = NULL; char *pszTemp = NULL; GDattrinfo( hGD, papszAttributes[i], &iNumType, &nValues ); if ( iNumType == DFNT_CHAR8 || iNumType == DFNT_UCHAR8 ) pData = CPLMalloc( (nValues + 1) * GetDataTypeSize(iNumType) ); else pData = CPLMalloc( nValues * GetDataTypeSize(iNumType) ); GDreadattr( hGD, papszAttributes[i], pData ); if ( iNumType == DFNT_CHAR8 || iNumType == DFNT_UCHAR8 ) { ((char *)pData)[nValues] = '\0'; papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], (const char *) pData ); } else { pszTemp = SPrintArray( GetDataType(iNumType), pData, nValues, ", " ); papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], pszTemp ); if ( pszTemp ) CPLFree( pszTemp ); } if ( pData ) CPLFree( pData ); } CSLDestroy( papszAttributes ); CPLFree( pszAttrList ); } /* -------------------------------------------------------------------- */ /* After fetching HDF-EOS specific stuff we will read the generic */ /* HDF attributes and append them to the list of metadata. */ /* -------------------------------------------------------------------- */ int32 iSDS; if ( GDsdid(hGD, pszFieldName, &iSDS) != -1 ) { int32 iRank, iNumType, iAttribute, nAttrs, nValues; char szName[HDF4_SDS_MAXNAMELEN]; int32 aiDimSizes[H4_MAX_VAR_DIMS]; if( SDgetinfo( iSDS, szName, &iRank, aiDimSizes, &iNumType, &nAttrs) == 0 ) { for ( iAttribute = 0; iAttribute < nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME]; SDattrinfo( iSDS, iAttribute, szAttrName, &iNumType, &nValues ); papszLocalMetadata = TranslateHDF4Attributes( iSDS, iAttribute, szAttrName, iNumType, nValues, papszLocalMetadata ); } } } /* -------------------------------------------------------------------- */ /* Finally make the whole list visible. */ /* -------------------------------------------------------------------- */ SetMetadata( papszLocalMetadata ); } /************************************************************************/ /* ProcessModisSDSGeolocation() */ /* */ /* Recognise latitude and longitude geolocation arrays in */ /* simple SDS datasets like: */ /* */ /* download.osgeo.org/gdal/data/hdf4/A2006005182000.L2_LAC_SST.x.hdf */ /* */ /* As reported in ticket #1895. */ /* */ /* Note that we don't check that the dimensions of the latitude */ /* and longitude exactly match the dimensions of the basedata, */ /* though we ought to. */ /************************************************************************/ void HDF4ImageDataset::ProcessModisSDSGeolocation(void) { int iDSIndex, iXIndex=-1, iYIndex=-1; // No point in assigning geolocation to the geolocation SDSes themselves. if( EQUAL(szName,"longitude") || EQUAL(szName,"latitude") ) return; if (nRasterYSize == 1) return; /* -------------------------------------------------------------------- */ /* Scan for latitude and longitude sections. */ /* -------------------------------------------------------------------- */ int32 nDatasets, nAttributes; if ( SDfileinfo( hSD, &nDatasets, &nAttributes ) != 0 ) return; for( iDSIndex = 0; iDSIndex < nDatasets; iDSIndex++ ) { int32 iRank, iNumType, nAttrs, iSDS; char szName[HDF4_SDS_MAXNAMELEN]; int32 aiDimSizes[H4_MAX_VAR_DIMS]; iSDS = SDselect( hSD, iDSIndex ); if( SDgetinfo( iSDS, szName, &iRank, aiDimSizes, &iNumType, &nAttrs) == 0 ) { if( EQUAL(szName,"latitude") ) iYIndex = iDSIndex; if( EQUAL(szName,"longitude") ) iXIndex = iDSIndex; } SDendaccess(iSDS); } if( iXIndex == -1 || iYIndex == -1 ) return; /* -------------------------------------------------------------------- */ /* We found geolocation information. Record it as metadata. */ /* -------------------------------------------------------------------- */ CPLString osWrk; SetMetadataItem( "SRS", SRS_WKT_WGS84, "GEOLOCATION" ); osWrk.Printf( "HDF4_SDS:UNKNOWN:\"%s\":%d", pszFilename, iXIndex ); SetMetadataItem( "X_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "X_BAND", "1" , "GEOLOCATION" ); osWrk.Printf( "HDF4_SDS:UNKNOWN:\"%s\":%d", pszFilename, iYIndex ); SetMetadataItem( "Y_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "Y_BAND", "1" , "GEOLOCATION" ); SetMetadataItem( "PIXEL_OFFSET", "0", "GEOLOCATION" ); SetMetadataItem( "PIXEL_STEP", "1", "GEOLOCATION" ); SetMetadataItem( "LINE_OFFSET", "0", "GEOLOCATION" ); SetMetadataItem( "LINE_STEP", "1", "GEOLOCATION" ); } /************************************************************************/ /* ProcessSwathGeolocation() */ /* */ /* Handle the swath geolocation data for a swath. Attach */ /* geolocation metadata corresponding to it (if there is no */ /* lattice), and also attach it as GCPs. This is only invoked */ /* for EOS_SWATH, not EOS_SWATH_GEOL datasets. */ /************************************************************************/ int HDF4ImageDataset::ProcessSwathGeolocation( int32 hSW, char **papszDimList ) { char szXGeo[8192] = ""; char szYGeo[8192] = ""; char szPixel[8192]= ""; char szLine[8192] = ""; int32 iWrkNumType; void *pLat = NULL, *pLong = NULL; void *pLatticeX = NULL, *pLatticeY = NULL; int32 iLatticeType, iLatticeDataSize = 0, iRank; int32 nLatCount = 0, nLongCount = 0; int32 nXPoints=0, nYPoints=0; int32 nStrBufSize; int i, j, iDataSize = 0, iPixelDim=-1,iLineDim=-1, iLongDim=-1, iLatDim=-1; int32 *paiRank = NULL, *paiNumType = NULL, *paiOffset = NULL, *paiIncrement = NULL; /* -------------------------------------------------------------------- */ /* Determine a product name. */ /* -------------------------------------------------------------------- */ const char *pszProduct = CSLFetchNameValue( papszLocalMetadata, "SHORTNAME" ); HDF4EOSProduct eProduct = PROD_UNKNOWN; if ( pszProduct ) { if ( EQUALN(pszProduct, "ASTL1A", 6) ) eProduct = PROD_ASTER_L1A; else if ( EQUALN(pszProduct, "ASTL1B", 6) ) eProduct = PROD_ASTER_L1B; else if ( EQUALN(pszProduct, "AST_04", 6) || EQUALN(pszProduct, "AST_05", 6) || EQUALN(pszProduct, "AST_06", 6) || EQUALN(pszProduct, "AST_07", 6) || EQUALN(pszProduct, "AST_08", 6) || EQUALN(pszProduct, "AST_09", 6) || EQUALN(pszProduct, "AST13", 5) || EQUALN(pszProduct, "AST3", 4) ) eProduct = PROD_ASTER_L2; else if ( EQUALN(pszProduct, "AST14", 5) ) eProduct = PROD_ASTER_L3; else if ( EQUALN(pszProduct, "MOD02", 5) || EQUALN(pszProduct, "MYD02", 5) ) eProduct = PROD_MODIS_L1B; else if ( EQUALN(pszProduct, "MOD07_L2", 8) ) eProduct = PROD_MODIS_L2; } /* -------------------------------------------------------------------- */ /* Read names of geolocation fields and corresponding */ /* geolocation maps. */ /* -------------------------------------------------------------------- */ int32 nDataFields = SWnentries( hSW, HDFE_NENTGFLD, &nStrBufSize ); char *pszGeoList = (char *)CPLMalloc( nStrBufSize + 1 ); paiRank = (int32 *)CPLMalloc( nDataFields * sizeof(int32) ); paiNumType = (int32 *)CPLMalloc( nDataFields * sizeof(int32) ); if ( nDataFields != SWinqgeofields(hSW, pszGeoList, paiRank, paiNumType) ) { CPLDebug( "HDF4Image", "Can't get the list of geolocation fields in swath \"%s\"", pszSubdatasetName ); } #ifdef DEBUG else { char *pszTmp; CPLDebug( "HDF4Image", "Number of geolocation fields in swath \"%s\": %ld", pszSubdatasetName, (long)nDataFields ); CPLDebug( "HDF4Image", "List of geolocation fields in swath \"%s\": %s", pszSubdatasetName, pszGeoList ); pszTmp = SPrintArray( GDT_UInt32, paiRank, nDataFields, "," ); CPLDebug( "HDF4Image", "Geolocation fields ranks: %s", pszTmp ); CPLFree( pszTmp ); } #endif CPLFree( paiRank ); CPLFree( paiNumType ); /* -------------------------------------------------------------------- */ /* Read geolocation data. */ /* -------------------------------------------------------------------- */ int32 nDimMaps = SWnentries( hSW, HDFE_NENTMAP, &nStrBufSize ); if ( nDimMaps <= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "No geolocation maps in swath \"%s\"", pszSubdatasetName ); CPLDebug( "HDF4Image", "Suppose one-to-one mapping. X field is \"%s\", Y field is \"%s\"", papszDimList[iXDim], papszDimList[iYDim] ); #endif strncpy( szPixel, papszDimList[iXDim], 8192 ); strncpy( szLine, papszDimList[iYDim], 8192 ); strncpy( szXGeo, papszDimList[iXDim], 8192 ); strncpy( szYGeo, papszDimList[iYDim], 8192 ); paiOffset = (int32 *)CPLCalloc( 2, sizeof(int32) ); paiIncrement = (int32 *)CPLCalloc( 2, sizeof(int32) ); paiOffset[0] = paiOffset[1] = 0; paiIncrement[0] = paiIncrement[1] = 1; } else { char *pszDimMaps = (char *)CPLMalloc( nStrBufSize + 1 ); paiOffset = (int32 *)CPLCalloc( nDimMaps, sizeof(int32) ); paiIncrement = (int32 *)CPLCalloc( nDimMaps, sizeof(int32) ); *pszDimMaps = '\0'; if ( nDimMaps != SWinqmaps(hSW, pszDimMaps, paiOffset, paiIncrement) ) { CPLDebug( "HDF4Image", "Can't get the list of geolocation maps in swath \"%s\"", pszSubdatasetName ); } #ifdef DEBUG else { char *pszTmp; CPLDebug( "HDF4Image", "List of geolocation maps in swath \"%s\": %s", pszSubdatasetName, pszDimMaps ); pszTmp = SPrintArray( GDT_Int32, paiOffset, nDimMaps, "," ); CPLDebug( "HDF4Image", "Geolocation map offsets: %s", pszTmp ); CPLFree( pszTmp ); pszTmp = SPrintArray( GDT_Int32, paiIncrement, nDimMaps, "," ); CPLDebug( "HDF4Image", "Geolocation map increments: %s", pszTmp ); CPLFree( pszTmp ); } #endif char **papszDimMap = CSLTokenizeString2( pszDimMaps, ",", CSLT_HONOURSTRINGS ); int nDimMapCount = CSLCount(papszDimMap); for ( i = 0; i < nDimMapCount; i++ ) { if ( strstr(papszDimMap[i], papszDimList[iXDim]) ) { strncpy( szPixel, papszDimList[iXDim], 8192 ); strncpy( szXGeo, papszDimMap[i], 8192 ); char *pszTemp = strchr( szXGeo, '/' ); if ( pszTemp ) *pszTemp = '\0'; } else if ( strstr(papszDimMap[i], papszDimList[iYDim]) ) { strncpy( szLine, papszDimList[iYDim], 8192 ); strncpy( szYGeo, papszDimMap[i], 8192 ); char *pszTemp = strchr( szYGeo, '/' ); if ( pszTemp ) *pszTemp = '\0'; } } CSLDestroy( papszDimMap ); CPLFree( pszDimMaps ); } if ( *szXGeo == 0 || *szYGeo == 0 ) return FALSE; /* -------------------------------------------------------------------- */ /* Read geolocation fields. */ /* -------------------------------------------------------------------- */ char szGeoDimList[8192] = ""; char **papszGeolocations = CSLTokenizeString2( pszGeoList, ",", CSLT_HONOURSTRINGS ); int nGeolocationsCount = CSLCount( papszGeolocations ); int32 aiDimSizes[H4_MAX_VAR_DIMS]; for ( i = 0; i < nGeolocationsCount; i++ ) { char **papszGeoDimList = NULL; // Skip "SceneLineNumber" table if present in the list of geolocation // fields. It is not needed to fetch geocoding data. if ( EQUAL(papszGeolocations[i], "SceneLineNumber") ) continue; if ( SWfieldinfo( hSW, papszGeolocations[i], &iRank, aiDimSizes, &iWrkNumType, szGeoDimList ) < 0 ) { CPLDebug( "HDF4Image", "Can't read attributes of geolocation field \"%s\"", papszGeolocations[i] ); return FALSE; } CPLDebug( "HDF4Image", "List of dimensions in geolocation field \"%s\": %s", papszGeolocations[i], szGeoDimList ); papszGeoDimList = CSLTokenizeString2( szGeoDimList, ",", CSLT_HONOURSTRINGS ); if( CSLCount(papszGeoDimList) > H4_MAX_VAR_DIMS || CSLFindString( papszGeoDimList, szXGeo ) == -1 || CSLFindString( papszGeoDimList, szYGeo ) == -1 ) { CSLDestroy( papszGeoDimList ); return FALSE; } nXPoints = aiDimSizes[CSLFindString( papszGeoDimList, szXGeo )]; nYPoints = aiDimSizes[CSLFindString( papszGeoDimList, szYGeo )]; if ( EQUAL(szPixel, papszDimList[iXDim]) ) { iPixelDim = 1; iLineDim = 0; } else { iPixelDim = 0; iLineDim = 1; } iDataSize = GetDataTypeSize( iWrkNumType ); if ( strstr( papszGeolocations[i], "Latitude" ) ) { iLatDim = i; nLatCount = nXPoints * nYPoints; pLat = CPLMalloc( nLatCount * iDataSize ); if (SWreadfield( hSW, papszGeolocations[i], NULL, NULL, NULL, (VOIDP)pLat ) < 0) { CPLDebug( "HDF4Image", "Can't read geolocation field %s", papszGeolocations[i]); CPLFree( pLat ); pLat = NULL; } } else if ( strstr( papszGeolocations[i], "Longitude" ) ) { iLongDim = i; nLongCount = nXPoints * nYPoints; pLong = CPLMalloc( nLongCount * iDataSize ); if (SWreadfield( hSW, papszGeolocations[i], NULL, NULL, NULL, (VOIDP)pLong ) < 0) { CPLDebug( "HDF4Image", "Can't read geolocation field %s", papszGeolocations[i]); CPLFree( pLong ); pLong = NULL; } } CSLDestroy( papszGeoDimList ); } /* -------------------------------------------------------------------- */ /* Do we have a lattice table? */ /* -------------------------------------------------------------------- */ if (SWfieldinfo(hSW, "LatticePoint", &iRank, aiDimSizes, &iLatticeType, szGeoDimList) == 0 && iRank == 3 && nXPoints == aiDimSizes[1] && nYPoints == aiDimSizes[0] && aiDimSizes[2] == 2 ) { int32 iStart[H4_MAX_NC_DIMS], iEdges[H4_MAX_NC_DIMS]; iLatticeDataSize = GetDataTypeSize( iLatticeType ); iStart[1] = 0; iEdges[1] = nXPoints; iStart[0] = 0; iEdges[0] = nYPoints; iStart[2] = 0; iEdges[2] = 1; pLatticeX = CPLMalloc( nLatCount * iLatticeDataSize ); if (SWreadfield( hSW, "LatticePoint", iStart, NULL, iEdges, (VOIDP)pLatticeX ) < 0) { CPLDebug( "HDF4Image", "Can't read lattice field" ); CPLFree( pLatticeX ); pLatticeX = NULL; } iStart[2] = 1; iEdges[2] = 1; pLatticeY = CPLMalloc( nLatCount * iLatticeDataSize ); if (SWreadfield( hSW, "LatticePoint", iStart, NULL, iEdges, (VOIDP)pLatticeY ) < 0) { CPLDebug( "HDF4Image", "Can't read lattice field" ); CPLFree( pLatticeY ); pLatticeY = NULL; } } /* -------------------------------------------------------------------- */ /* Determine whether to use no, partial or full GCPs. */ /* -------------------------------------------------------------------- */ const char *pszGEOL_AS_GCPS = CPLGetConfigOption( "GEOL_AS_GCPS", "PARTIAL" ); int iGCPStepX, iGCPStepY; if( EQUAL(pszGEOL_AS_GCPS,"NONE") ) { iGCPStepX = iGCPStepY = 0; } else if( EQUAL(pszGEOL_AS_GCPS,"FULL") ) { iGCPStepX = iGCPStepY = 1; } else { // aim for 10x10 grid or so. iGCPStepX = MAX(1,((nXPoints-1) / 11)); iGCPStepY = MAX(1,((nYPoints-1) / 11)); } /* -------------------------------------------------------------------- */ /* Fetch projection information for various datasets. */ /* -------------------------------------------------------------------- */ if ( nLatCount && nLongCount && nLatCount == nLongCount && pLat && pLong ) { CPLFree( pszGCPProjection ); pszGCPProjection = NULL; // ASTER Level 1A if ( eProduct == PROD_ASTER_L1A ) { pszGCPProjection = CPLStrdup( "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9108\"]],AXIS[\"Lat\",NORTH],AXIS[\"Long\",EAST],AUTHORITY[\"EPSG\",\"4326\"]]" ); } // ASTER Level 1B, Level 2 else if ( eProduct == PROD_ASTER_L1B || eProduct == PROD_ASTER_L2 ) { // Constuct the metadata keys. // A band number is taken from the field name. const char *pszBand = strpbrk( pszFieldName, "0123456789" ); if ( !pszBand ) pszBand = ""; char *pszProjLine = CPLStrdup(CPLSPrintf("MPMETHOD%s", pszBand)); char *pszParmsLine = CPLStrdup(CPLSPrintf("PROJECTIONPARAMETERS%s", pszBand)); char *pszZoneLine = CPLStrdup(CPLSPrintf("UTMZONECODE%s", pszBand)); char *pszEllipsoidLine = CPLStrdup(CPLSPrintf("ELLIPSOIDANDDATUM%s", pszBand)); // Fetch projection related values from the // metadata. const char *pszProj = CSLFetchNameValue( papszLocalMetadata, pszProjLine ); const char *pszParms = CSLFetchNameValue( papszLocalMetadata, pszParmsLine ); const char *pszZone = CSLFetchNameValue( papszLocalMetadata, pszZoneLine ); const char* pszEllipsoid = CSLFetchNameValue( papszLocalMetadata, pszEllipsoidLine ); #ifdef DEBUG CPLDebug( "HDF4Image", "Projection %s=%s, parameters %s=%s, " "zone %s=%s", pszProjLine, pszProj, pszParmsLine, pszParms, pszZoneLine, pszZone ); CPLDebug( "HDF4Image", "Ellipsoid %s=%s", pszEllipsoidLine, pszEllipsoid ); #endif // Transform all mnemonical codes in the values. int i, nParms; // Projection is UTM by default long iProjSys = (pszProj) ? USGSMnemonicToCode(pszProj) : 1L; long iZone = (pszZone && iProjSys == 1L) ? atoi(pszZone): 0L; char **papszEllipsoid = (pszEllipsoid) ? CSLTokenizeString2( pszEllipsoid, ",", CSLT_HONOURSTRINGS ) : NULL; long iEllipsoid = 8L; // WGS84 by default if ( papszEllipsoid && CSLCount(papszEllipsoid) > 0 ) { if (EQUAL( papszEllipsoid[0], "WGS84")) iEllipsoid = 8L; } double adfProjParms[15]; char **papszParms = (pszParms) ? CSLTokenizeString2( pszParms, ",", CSLT_HONOURSTRINGS ) : NULL; nParms = CSLCount(papszParms); if (nParms >= 15) nParms = 15; for (i = 0; i < nParms; i++) adfProjParms[i] = CPLAtof( papszParms[i] ); for (; i < 15; i++) adfProjParms[i] = 0.0; // Create projection definition oSRS.importFromUSGS( iProjSys, iZone, adfProjParms, iEllipsoid ); oSRS.SetLinearUnits( SRS_UL_METER, 1.0 ); oSRS.exportToWkt( &pszGCPProjection ); CSLDestroy( papszParms ); CPLFree( pszEllipsoidLine ); CPLFree( pszZoneLine ); CPLFree( pszParmsLine ); CPLFree( pszProjLine ); } // ASTER Level 3 (DEM) else if ( eProduct == PROD_ASTER_L3 ) { double dfCenterX, dfCenterY; int iZone; ReadCoordinates( CSLFetchNameValue( papszGlobalMetadata, "SCENECENTER" ), &dfCenterY, &dfCenterX ); // Calculate UTM zone from scene center coordinates iZone = 30 + (int) ((dfCenterX + 6.0) / 6.0); // Create projection definition if( dfCenterY > 0 ) oSRS.SetUTM( iZone, TRUE ); else oSRS.SetUTM( - iZone, FALSE ); oSRS.SetWellKnownGeogCS( "WGS84" ); oSRS.SetLinearUnits( SRS_UL_METER, 1.0 ); oSRS.exportToWkt( &pszGCPProjection ); } // MODIS L1B else if ( eProduct == PROD_MODIS_L1B || eProduct == PROD_MODIS_L2 ) { pszGCPProjection = CPLStrdup( SRS_WKT_WGS84 ); } /* -------------------------------------------------------------------- */ /* Fill the GCPs list. */ /* -------------------------------------------------------------------- */ if( iGCPStepX > 0 ) { nGCPCount = (((nXPoints-1) / iGCPStepX) + 1) * (((nYPoints-1) / iGCPStepY) + 1); pasGCPList = (GDAL_GCP *) CPLCalloc( nGCPCount, sizeof( GDAL_GCP ) ); GDALInitGCPs( nGCPCount, pasGCPList ); int iGCP = 0; for ( i = 0; i < nYPoints; i += iGCPStepY ) { for ( j = 0; j < nXPoints; j += iGCPStepX ) { int iGeoOff = i * nXPoints + j; pasGCPList[iGCP].dfGCPX = AnyTypeToDouble(iWrkNumType, (void *)((char*)pLong+ iGeoOff*iDataSize)); pasGCPList[iGCP].dfGCPY = AnyTypeToDouble(iWrkNumType, (void *)((char*)pLat + iGeoOff*iDataSize)); // GCPs in Level 1A/1B dataset are in geocentric // coordinates. Convert them in geodetic (we // will convert latitudes only, longitudes // do not need to be converted, because // they are the same). // This calculation valid for WGS84 datum only. if ( eProduct == PROD_ASTER_L1A || eProduct == PROD_ASTER_L1B ) { pasGCPList[iGCP].dfGCPY = atan(tan(pasGCPList[iGCP].dfGCPY *PI/180)/0.99330562)*180/PI; } ToGeoref(&pasGCPList[iGCP].dfGCPX, &pasGCPList[iGCP].dfGCPY); pasGCPList[iGCP].dfGCPZ = 0.0; if ( pLatticeX && pLatticeY ) { pasGCPList[iGCP].dfGCPPixel = AnyTypeToDouble(iLatticeType, (void *)((char *)pLatticeX + iGeoOff*iLatticeDataSize))+0.5; pasGCPList[iGCP].dfGCPLine = AnyTypeToDouble(iLatticeType, (void *)((char *)pLatticeY + iGeoOff*iLatticeDataSize))+0.5; } else if ( paiOffset && paiIncrement ) { pasGCPList[iGCP].dfGCPPixel = paiOffset[iPixelDim] + j * paiIncrement[iPixelDim] + 0.5; pasGCPList[iGCP].dfGCPLine = paiOffset[iLineDim] + i * paiIncrement[iLineDim] + 0.5; } iGCP++; } } } /* -------------------------------------------------------------------- */ /* Establish geolocation metadata, but only if there is no */ /* lattice. The lattice destroys the regularity of the grid. */ /* -------------------------------------------------------------------- */ if( pLatticeX == NULL && iLatDim != -1 && iLongDim != -1 && iPixelDim != -1 && iLineDim != -1 ) { CPLString osWrk; SetMetadataItem( "SRS", pszGCPProjection, "GEOLOCATION" ); osWrk.Printf( "HDF4_EOS:EOS_SWATH_GEOL:\"%s\":%s:%s", pszFilename, pszSubdatasetName, papszGeolocations[iLongDim] ); SetMetadataItem( "X_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "X_BAND", "1" , "GEOLOCATION" ); osWrk.Printf( "HDF4_EOS:EOS_SWATH_GEOL:\"%s\":%s:%s", pszFilename, pszSubdatasetName, papszGeolocations[iLatDim] ); SetMetadataItem( "Y_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "Y_BAND", "1" , "GEOLOCATION" ); if ( paiOffset && paiIncrement ) { osWrk.Printf( "%ld", (long)paiOffset[iPixelDim] ); SetMetadataItem( "PIXEL_OFFSET", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", (long)paiIncrement[iPixelDim] ); SetMetadataItem( "PIXEL_STEP", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", (long)paiOffset[iLineDim] ); SetMetadataItem( "LINE_OFFSET", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", (long)paiIncrement[iLineDim] ); SetMetadataItem( "LINE_STEP", osWrk, "GEOLOCATION" ); } } /* -------------------------------------------------------------------- */ /* Cleanup */ /* -------------------------------------------------------------------- */ CPLFree( pLatticeX ); CPLFree( pLatticeY ); CPLFree( pLat ); CPLFree( pLong ); if( iGCPStepX == 0 ) { CPLFree( pszGCPProjection ); pszGCPProjection = NULL; } } /* -------------------------------------------------------------------- */ /* Cleanup */ /* -------------------------------------------------------------------- */ CPLFree( paiOffset ); CPLFree( paiIncrement ); CPLFree( pszGeoList ); CSLDestroy( papszGeolocations ); return TRUE; } /************************************************************************/ /* Open() */ /************************************************************************/ GDALDataset *HDF4ImageDataset::Open( GDALOpenInfo * poOpenInfo ) { int i; if( !EQUALN( poOpenInfo->pszFilename, "HDF4_SDS:", 9 ) && !EQUALN( poOpenInfo->pszFilename, "HDF4_GR:", 8 ) && !EQUALN( poOpenInfo->pszFilename, "HDF4_GD:", 8 ) && !EQUALN( poOpenInfo->pszFilename, "HDF4_EOS:", 9 ) ) return NULL; /* -------------------------------------------------------------------- */ /* Create a corresponding GDALDataset. */ /* -------------------------------------------------------------------- */ char **papszSubdatasetName; HDF4ImageDataset *poDS; poDS = new HDF4ImageDataset( ); poDS->fp = poOpenInfo->fp; poOpenInfo->fp = NULL; CPLMutexHolderD(&hHDF4Mutex); papszSubdatasetName = CSLTokenizeString2( poOpenInfo->pszFilename, ":", CSLT_HONOURSTRINGS | CSLT_PRESERVEESCAPES); if ( CSLCount( papszSubdatasetName ) != 4 && CSLCount( papszSubdatasetName ) != 5 && CSLCount( papszSubdatasetName ) != 6 ) { CSLDestroy( papszSubdatasetName ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } /* -------------------------------------------------------------------- */ /* Check for drive name in windows HDF4:"D:\... */ /* -------------------------------------------------------------------- */ if (strlen(papszSubdatasetName[2]) == 1) { char* pszFilename = (char*) CPLMalloc( 2 + strlen(papszSubdatasetName[3]) + 1); sprintf(pszFilename, "%s:%s", papszSubdatasetName[2], papszSubdatasetName[3]); CPLFree(papszSubdatasetName[2]); CPLFree(papszSubdatasetName[3]); papszSubdatasetName[2] = pszFilename; /* Move following arguments one rank upper */ papszSubdatasetName[3] = papszSubdatasetName[4]; if (papszSubdatasetName[4] != NULL) { papszSubdatasetName[4] = papszSubdatasetName[5]; papszSubdatasetName[5] = NULL; } } poDS->pszFilename = CPLStrdup( papszSubdatasetName[2] ); if( EQUAL( papszSubdatasetName[0], "HDF4_SDS" ) ) poDS->iDatasetType = HDF4_SDS; else if ( EQUAL( papszSubdatasetName[0], "HDF4_GR" ) ) poDS->iDatasetType = HDF4_GR; else if ( EQUAL( papszSubdatasetName[0], "HDF4_EOS" ) ) poDS->iDatasetType = HDF4_EOS; else poDS->iDatasetType = HDF4_UNKNOWN; if( EQUAL( papszSubdatasetName[1], "GDAL_HDF4" ) ) poDS->iSubdatasetType = H4ST_GDAL; else if( EQUAL( papszSubdatasetName[1], "EOS_GRID" ) ) poDS->iSubdatasetType = H4ST_EOS_GRID; else if( EQUAL( papszSubdatasetName[1], "EOS_SWATH" ) ) poDS->iSubdatasetType = H4ST_EOS_SWATH; else if( EQUAL( papszSubdatasetName[1], "EOS_SWATH_GEOL" ) ) poDS->iSubdatasetType = H4ST_EOS_SWATH_GEOL; else if( EQUAL( papszSubdatasetName[1], "SEAWIFS_L3" ) ) poDS->iSubdatasetType= H4ST_SEAWIFS_L3; else if( EQUAL( papszSubdatasetName[1], "HYPERION_L1" ) ) poDS->iSubdatasetType= H4ST_HYPERION_L1; else poDS->iSubdatasetType = H4ST_UNKNOWN; /* -------------------------------------------------------------------- */ /* Is our file still here? */ /* -------------------------------------------------------------------- */ if ( !Hishdf( poDS->pszFilename ) ) { CSLDestroy( papszSubdatasetName ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } /* -------------------------------------------------------------------- */ /* Collect the remain (post filename) components to treat as */ /* the subdataset name. */ /* -------------------------------------------------------------------- */ CPLString osSubdatasetName; osSubdatasetName = papszSubdatasetName[3]; if( papszSubdatasetName[4] != NULL ) { osSubdatasetName += ":"; osSubdatasetName += papszSubdatasetName[4]; } /* -------------------------------------------------------------------- */ /* Try opening the dataset. */ /* -------------------------------------------------------------------- */ int32 iAttribute, nValues, iAttrNumType; double dfNoData, dfScale, dfOffset; int bNoDataSet = FALSE, bHaveScale = FALSE, bHaveOffset = FALSE; const char *pszUnits = NULL, *pszDescription = NULL; /* -------------------------------------------------------------------- */ /* Select SDS or GR to read from. */ /* -------------------------------------------------------------------- */ if ( poDS->iDatasetType == HDF4_EOS ) { poDS->pszSubdatasetName = CPLStrdup( papszSubdatasetName[3] ); if (papszSubdatasetName[4] == NULL) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->pszFieldName = CPLStrdup( papszSubdatasetName[4] ); } else poDS->iDataset = atoi( papszSubdatasetName[3] ); CSLDestroy( papszSubdatasetName ); switch ( poDS->iDatasetType ) { case HDF4_EOS: { void *pNoDataValue = NULL; switch ( poDS->iSubdatasetType ) { /* -------------------------------------------------------------------- */ /* HDF-EOS Swath. */ /* -------------------------------------------------------------------- */ case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: { int32 hSW; char *pszDimList = NULL; if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = SWopen( poDS->pszFilename, DFACC_READ ); else poDS->hHDF4 = SWopen( poDS->pszFilename, DFACC_WRITE ); if( poDS->hHDF4 <= 0 ) { CPLDebug( "HDF4Image", "Can't open file \"%s\" for swath reading", poDS->pszFilename ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return( NULL ); } hSW = SWattach( poDS->hHDF4, poDS->pszSubdatasetName ); if( hSW < 0 ) { CPLDebug( "HDF4Image", "Can't attach to subdataset %s", poDS->pszSubdatasetName ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return( NULL ); } /* -------------------------------------------------------------------- */ /* Decode the dimension map. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if ( SWnentries( hSW, HDFE_NENTDIM, &nStrBufSize ) < 0 || nStrBufSize <= 0 ) { CPLDebug( "HDF4Image", "Can't read a number of dimension maps." ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } pszDimList = (char *)CPLMalloc( nStrBufSize + 1 ); if ( SWfieldinfo( hSW, poDS->pszFieldName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, pszDimList ) < 0 ) { CPLDebug( "HDF4Image", "Can't read dimension maps." ); CPLFree( pszDimList ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } pszDimList[nStrBufSize] = '\0'; #ifdef DEBUG CPLDebug( "HDF4Image", "List of dimensions in swath \"%s\": %s", poDS->pszFieldName, pszDimList ); #endif poDS->GetImageDimensions( pszDimList ); #ifdef DEBUG CPLDebug( "HDF4Image", "X dimension is %d, Y dimension is %d", poDS->iXDim, poDS->iYDim ); #endif /* -------------------------------------------------------------------- */ /* Fetch metadata. */ /* -------------------------------------------------------------------- */ if( poDS->iSubdatasetType == H4ST_EOS_SWATH ) /* Not H4ST_EOS_SWATH_GEOL */ poDS->GetSwatAttrs( hSW ); /* -------------------------------------------------------------------- */ /* Fetch NODATA value. */ /* -------------------------------------------------------------------- */ pNoDataValue = CPLMalloc( poDS->GetDataTypeSize(poDS->iNumType) ); if ( SWgetfillvalue( hSW, poDS->pszFieldName, pNoDataValue ) != -1 ) { dfNoData = poDS->AnyTypeToDouble( poDS->iNumType, pNoDataValue ); bNoDataSet = TRUE; } else { const char *pszNoData = CSLFetchNameValue( poDS->papszLocalMetadata, "_FillValue" ); if ( pszNoData ) { dfNoData = CPLAtof( pszNoData ); bNoDataSet = TRUE; } } CPLFree( pNoDataValue ); /* -------------------------------------------------------------------- */ /* Handle Geolocation processing. */ /* -------------------------------------------------------------------- */ if( poDS->iSubdatasetType == H4ST_EOS_SWATH ) /* Not H4ST_SWATH_GEOL */ { char **papszDimList = CSLTokenizeString2( pszDimList, ",", CSLT_HONOURSTRINGS ); if( !poDS->ProcessSwathGeolocation( hSW, papszDimList ) ) { CPLDebug( "HDF4Image", "No geolocation available for this swath." ); } CSLDestroy( papszDimList ); } /* -------------------------------------------------------------------- */ /* Cleanup. */ /* -------------------------------------------------------------------- */ CPLFree( pszDimList ); SWdetach( hSW ); } break; /* -------------------------------------------------------------------- */ /* HDF-EOS Grid. */ /* -------------------------------------------------------------------- */ case H4ST_EOS_GRID: { int32 hGD, iProjCode = 0, iZoneCode = 0, iSphereCode = 0; int32 nXSize, nYSize; char szDimList[8192]; double adfUpLeft[2], adfLowRight[2], adfProjParms[15]; if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = GDopen( poDS->pszFilename, DFACC_READ ); else poDS->hHDF4 = GDopen( poDS->pszFilename, DFACC_WRITE ); if( poDS->hHDF4 <= 0 ) { CPLDebug( "HDF4Image", "Can't open file \"%s\" for grid reading", poDS->pszFilename ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return( NULL ); } hGD = GDattach( poDS->hHDF4, poDS->pszSubdatasetName ); /* -------------------------------------------------------------------- */ /* Decode the dimension map. */ /* -------------------------------------------------------------------- */ GDfieldinfo( hGD, poDS->pszFieldName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, szDimList ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of dimensions in grid %s: %s", poDS->pszFieldName, szDimList); #endif poDS->GetImageDimensions( szDimList ); int32 tilecode, tilerank; if( GDtileinfo( hGD , poDS->pszFieldName , &tilecode, &tilerank, NULL ) == 0 ) { if ( tilecode == HDFE_TILE ) { int32 *tiledims = NULL; tiledims = (int32 *) CPLCalloc( tilerank , sizeof( int32 ) ); GDtileinfo( hGD , poDS->pszFieldName , &tilecode, &tilerank, tiledims ); if ( ( tilerank == 2 ) && ( poDS->iRank == tilerank ) ) { poDS->nBlockPreferredXSize = tiledims[1]; poDS->nBlockPreferredYSize = tiledims[0]; poDS->bReadTile = true; #ifdef DEBUG CPLDebug( "HDF4_EOS:EOS_GRID:","tilerank in grid %s: %d", poDS->pszFieldName , (int)tilerank ); CPLDebug( "HDF4_EOS:EOS_GRID:","tiledimens in grid %s: %d,%d", poDS->pszFieldName , (int)tiledims[0] , (int)tiledims[1] ); #endif } #ifdef DEBUG else { CPLDebug( "HDF4_EOS:EOS_GRID:","tilerank in grid %s: %d not supported", poDS->pszFieldName , (int)tilerank ); } #endif CPLFree(tiledims); } else { #ifdef DEBUG CPLDebug( "HDF4_EOS:EOS_GRID:","tilecode == HDFE_NOTILE in grid %s: %d", poDS->pszFieldName , (int)poDS->iRank ); #endif } } #ifdef DEBUG else { CPLDebug( "HDF4_EOS:EOS_GRID:","ERROR GDtileinfo %s", poDS->pszFieldName ); } #endif /* -------------------------------------------------------------------- */ /* Fetch projection information */ /* -------------------------------------------------------------------- */ if ( GDprojinfo( hGD, &iProjCode, &iZoneCode, &iSphereCode, adfProjParms) >= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "Grid projection: " "projection code: %ld, zone code %ld, " "sphere code %ld", (long)iProjCode, (long)iZoneCode, (long)iSphereCode ); #endif poDS->oSRS.importFromUSGS( iProjCode, iZoneCode, adfProjParms, iSphereCode, USGS_ANGLE_RADIANS ); if ( poDS->pszProjection ) CPLFree( poDS->pszProjection ); poDS->oSRS.exportToWkt( &poDS->pszProjection ); } /* -------------------------------------------------------------------- */ /* Fetch geotransformation matrix */ /* -------------------------------------------------------------------- */ if ( GDgridinfo( hGD, &nXSize, &nYSize, adfUpLeft, adfLowRight ) >= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "Grid geolocation: " "top left X %f, top left Y %f, " "low right X %f, low right Y %f, " "cols %ld, rows %ld", adfUpLeft[0], adfUpLeft[1], adfLowRight[0], adfLowRight[1], (long)nXSize, (long)nYSize ); #endif if ( iProjCode ) { // For projected systems coordinates are in meters poDS->adfGeoTransform[1] = (adfLowRight[0] - adfUpLeft[0]) / nXSize; poDS->adfGeoTransform[5] = (adfLowRight[1] - adfUpLeft[1]) / nYSize; poDS->adfGeoTransform[0] = adfUpLeft[0]; poDS->adfGeoTransform[3] = adfUpLeft[1]; } else { // Handle angular geographic coordinates here poDS->adfGeoTransform[1] = (CPLPackedDMSToDec(adfLowRight[0]) - CPLPackedDMSToDec(adfUpLeft[0])) / nXSize; poDS->adfGeoTransform[5] = (CPLPackedDMSToDec(adfLowRight[1]) - CPLPackedDMSToDec(adfUpLeft[1])) / nYSize; poDS->adfGeoTransform[0] = CPLPackedDMSToDec(adfUpLeft[0]); poDS->adfGeoTransform[3] = CPLPackedDMSToDec(adfUpLeft[1]); } poDS->adfGeoTransform[2] = 0.0; poDS->adfGeoTransform[4] = 0.0; poDS->bHasGeoTransform = TRUE; } /* -------------------------------------------------------------------- */ /* Fetch metadata. */ /* -------------------------------------------------------------------- */ poDS->GetGridAttrs( hGD ); GDdetach( hGD ); /* -------------------------------------------------------------------- */ /* Fetch NODATA value. */ /* -------------------------------------------------------------------- */ pNoDataValue = CPLMalloc( poDS->GetDataTypeSize(poDS->iNumType) ); if ( GDgetfillvalue( hGD, poDS->pszFieldName, pNoDataValue ) != -1 ) { dfNoData = poDS->AnyTypeToDouble( poDS->iNumType, pNoDataValue ); bNoDataSet = TRUE; } else { const char *pszNoData = CSLFetchNameValue( poDS->papszLocalMetadata, "_FillValue" ); if ( pszNoData ) { dfNoData = CPLAtof( pszNoData ); bNoDataSet = TRUE; } } CPLFree( pNoDataValue ); } break; default: break; } /* -------------------------------------------------------------------- */ /* Fetch unit type, scale, offset and description */ /* Should be similar among various HDF-EOS kinds. */ /* -------------------------------------------------------------------- */ { const char *pszTmp = CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ); if ( pszTmp ) { dfScale = CPLAtof( pszTmp ); // some producers (ie. lndcsm from LEDAPS) emit // files with scale_factor=0 which is crazy to carry // through. if( dfScale == 0.0 ) dfScale = 1.0; bHaveScale = (dfScale != 0.0); } pszTmp = CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ); if ( pszTmp ) { dfOffset = CPLAtof( pszTmp ); bHaveOffset = TRUE; } pszUnits = CSLFetchNameValue( poDS->papszLocalMetadata, "units" ); pszDescription = CSLFetchNameValue( poDS->papszLocalMetadata, "long_name" ); } } break; /* -------------------------------------------------------------------- */ /* 'Plain' HDF scientific datasets. */ /* -------------------------------------------------------------------- */ case HDF4_SDS: { int32 iSDS; // Attempt to increase maximum number of opened HDF files #ifdef HDF4_HAS_MAXOPENFILES intn nCurrMax, nSysLimit; if ( SDget_maxopenfiles(&nCurrMax, &nSysLimit) >= 0 && nCurrMax < nSysLimit ) { SDreset_maxopenfiles( nSysLimit ); } #endif /* HDF4_HAS_MAXOPENFILES */ if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_READ, 0 ); else poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_WRITE, 0 ); if( poDS->hHDF4 <= 0 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return( NULL ); } poDS->hSD = SDstart( poDS->pszFilename, DFACC_READ ); if ( poDS->hSD == -1 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } if ( poDS->ReadGlobalAttributes( poDS->hSD ) != CE_None ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } int32 nDatasets, nAttrs; if ( SDfileinfo( poDS->hSD, &nDatasets, &nAttrs ) != 0 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } if (poDS->iDataset < 0 || poDS->iDataset >= nDatasets) { CPLError(CE_Failure, CPLE_AppDefined, "Subdataset index should be between 0 and %ld", (long int)nDatasets - 1); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } memset( poDS->aiDimSizes, 0, sizeof(int32) * H4_MAX_VAR_DIMS ); iSDS = SDselect( poDS->hSD, poDS->iDataset ); SDgetinfo( iSDS, poDS->szName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, &poDS->nAttrs); // We will duplicate global metadata for every subdataset poDS->papszLocalMetadata = CSLDuplicate( poDS->papszGlobalMetadata ); for ( iAttribute = 0; iAttribute < poDS->nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME]; SDattrinfo( iSDS, iAttribute, szAttrName, &iAttrNumType, &nValues ); poDS->papszLocalMetadata = poDS->TranslateHDF4Attributes( iSDS, iAttribute, szAttrName, iAttrNumType, nValues, poDS->papszLocalMetadata ); } poDS->SetMetadata( poDS->papszLocalMetadata, "" ); SDendaccess( iSDS ); #ifdef DEBUG CPLDebug( "HDF4Image", "aiDimSizes[0]=%ld, aiDimSizes[1]=%ld, " "aiDimSizes[2]=%ld, aiDimSizes[3]=%ld", (long)poDS->aiDimSizes[0], (long)poDS->aiDimSizes[1], (long)poDS->aiDimSizes[2], (long)poDS->aiDimSizes[3] ); #endif switch( poDS->iRank ) { case 1: poDS->nBandCount = 1; poDS->iXDim = 0; poDS->iYDim = -1; break; case 2: poDS->nBandCount = 1; poDS->iXDim = 1; poDS->iYDim = 0; break; case 3: /* FIXME ? We should probably remove the following test as there are valid datasets */ /* where the height is lower than the band number : for example http://www.iapmw.unibe.ch/research/projects/FriOWL/data/otd/LISOTD_HRAC_V2.2.hdf */ /* which is a 720x360 x 365 bands */ /* Use a HACK for now */ if( poDS->aiDimSizes[0] < poDS->aiDimSizes[2] && !(poDS->aiDimSizes[0] == 360 && poDS->aiDimSizes[1] == 720 && poDS->aiDimSizes[2] == 365) ) { poDS->iBandDim = 0; poDS->iXDim = 2; poDS->iYDim = 1; } else { if( poDS->aiDimSizes[1] <= poDS->aiDimSizes[0] && poDS->aiDimSizes[1] <= poDS->aiDimSizes[2] ) { poDS->iBandDim = 1; poDS->iXDim = 2; poDS->iYDim = 0; } else { poDS->iBandDim = 2; poDS->iXDim = 1; poDS->iYDim = 0; } } poDS->nBandCount = poDS->aiDimSizes[poDS->iBandDim]; break; case 4: // FIXME poDS->nBandCount = poDS->aiDimSizes[2] * poDS->aiDimSizes[3]; break; default: break; } // We preset this because CaptureNRLGeoTransform needs it. poDS->nRasterXSize = poDS->aiDimSizes[poDS->iXDim]; if (poDS->iYDim >= 0) poDS->nRasterYSize = poDS->aiDimSizes[poDS->iYDim]; else poDS->nRasterYSize = 1; // Special case projection info for NRL generated files. const char *pszMapProjectionSystem = CSLFetchNameValue(poDS->papszGlobalMetadata, "mapProjectionSystem"); if( pszMapProjectionSystem != NULL && EQUAL(pszMapProjectionSystem,"NRL(USGS)") ) { poDS->CaptureNRLGeoTransform(); } // Special case for coastwatch hdf files. if( CSLFetchNameValue( poDS->papszGlobalMetadata, "gctp_sys" ) != NULL ) poDS->CaptureCoastwatchGCTPInfo(); // Special case for MODIS geolocation poDS->ProcessModisSDSGeolocation(); // Special case for NASA/CCRS Landsat in HDF poDS->CaptureL1GMTLInfo(); } break; /* -------------------------------------------------------------------- */ /* 'Plain' HDF rasters. */ /* -------------------------------------------------------------------- */ case HDF4_GR: // Attempt to increase maximum number of opened HDF files #ifdef HDF4_HAS_MAXOPENFILES intn nCurrMax, nSysLimit; if ( SDget_maxopenfiles(&nCurrMax, &nSysLimit) >= 0 && nCurrMax < nSysLimit ) { SDreset_maxopenfiles( nSysLimit ); } #endif /* HDF4_HAS_MAXOPENFILES */ if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_READ, 0 ); else poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_WRITE, 0 ); if( poDS->hHDF4 <= 0 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return( NULL ); } poDS->hGR = GRstart( poDS->hHDF4 ); if ( poDS->hGR == -1 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->iGR = GRselect( poDS->hGR, poDS->iDataset ); if ( GRgetiminfo( poDS->iGR, poDS->szName, &poDS->iRank, &poDS->iNumType, &poDS->iInterlaceMode, poDS->aiDimSizes, &poDS->nAttrs ) != 0 ) { CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } // We will duplicate global metadata for every subdataset poDS->papszLocalMetadata = CSLDuplicate( poDS->papszGlobalMetadata ); for ( iAttribute = 0; iAttribute < poDS->nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME]; GRattrinfo( poDS->iGR, iAttribute, szAttrName, &iAttrNumType, &nValues ); poDS->papszLocalMetadata = poDS->TranslateHDF4Attributes( poDS->iGR, iAttribute, szAttrName, iAttrNumType, nValues, poDS->papszLocalMetadata ); } poDS->SetMetadata( poDS->papszLocalMetadata, "" ); // Read colour table GDALColorEntry oEntry; poDS->iPal = GRgetlutid ( poDS->iGR, poDS->iDataset ); if ( poDS->iPal != -1 ) { GRgetlutinfo( poDS->iPal, &poDS->nComps, &poDS->iPalDataType, &poDS->iPalInterlaceMode, &poDS->nPalEntries ); GRreadlut( poDS->iPal, poDS->aiPaletteData ); poDS->poColorTable = new GDALColorTable(); for( i = 0; i < N_COLOR_ENTRIES; i++ ) { oEntry.c1 = poDS->aiPaletteData[i][0]; oEntry.c2 = poDS->aiPaletteData[i][1]; oEntry.c3 = poDS->aiPaletteData[i][2]; oEntry.c4 = 255; poDS->poColorTable->SetColorEntry( i, &oEntry ); } } poDS->iXDim = 0; poDS->iYDim = 1; poDS->nBandCount = poDS->iRank; break; default: CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->nRasterXSize = poDS->aiDimSizes[poDS->iXDim]; if (poDS->iYDim >= 0) poDS->nRasterYSize = poDS->aiDimSizes[poDS->iYDim]; else poDS->nRasterYSize = 1; if ( poDS->iSubdatasetType == H4ST_HYPERION_L1 ) { // XXX: Hyperion SDSs has Height x Bands x Width dimensions scheme if ( poDS->iRank > 2 ) { poDS->nBandCount = poDS->aiDimSizes[1]; poDS->nRasterXSize = poDS->aiDimSizes[2]; poDS->nRasterYSize = poDS->aiDimSizes[0]; } else { poDS->nBandCount = poDS->aiDimSizes[0]; poDS->nRasterXSize = poDS->aiDimSizes[1]; poDS->nRasterYSize = 1; } } /* -------------------------------------------------------------------- */ /* Create band information objects. */ /* -------------------------------------------------------------------- */ for( i = 1; i <= poDS->nBandCount; i++ ) { HDF4ImageRasterBand *poBand = new HDF4ImageRasterBand( poDS, i, poDS->GetDataType( poDS->iNumType ) ); poDS->SetBand( i, poBand ); if ( bNoDataSet ) poBand->SetNoDataValue( dfNoData ); if ( bHaveScale ) { poBand->bHaveScale = TRUE; poBand->dfScale = dfScale; } if ( bHaveOffset ) { poBand->bHaveOffset = TRUE; poBand->dfOffset = dfOffset; } if ( pszUnits ) poBand->osUnitType = pszUnits; if ( pszDescription ) poBand->SetDescription( pszDescription ); } /* -------------------------------------------------------------------- */ /* Now we will handle particular types of HDF products. Every */ /* HDF product has its own structure. */ /* -------------------------------------------------------------------- */ // Variables for reading georeferencing double dfULX, dfULY, dfLRX, dfLRY; switch ( poDS->iSubdatasetType ) { /* -------------------------------------------------------------------- */ /* HDF, created by GDAL. */ /* -------------------------------------------------------------------- */ case H4ST_GDAL: { const char *pszValue; CPLDebug( "HDF4Image", "Input dataset interpreted as GDAL_HDF4" ); if ( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, "Projection")) ) { if ( poDS->pszProjection ) CPLFree( poDS->pszProjection ); poDS->pszProjection = CPLStrdup( pszValue ); } if ( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, "TransformationMatrix")) ) { int i = 0; char *pszString = (char *) pszValue; while ( *pszValue && i < 6 ) { poDS->adfGeoTransform[i++] = strtod(pszString, &pszString); pszString++; } poDS->bHasGeoTransform = TRUE; } for( i = 1; i <= poDS->nBands; i++ ) { if ( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, CPLSPrintf("BandDesc%d", i))) ) poDS->GetRasterBand( i )->SetDescription( pszValue ); } for( i = 1; i <= poDS->nBands; i++ ) { if ( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, CPLSPrintf("NoDataValue%d", i))) ) poDS->GetRasterBand(i)->SetNoDataValue( CPLAtof(pszValue) ); } } break; /* -------------------------------------------------------------------- */ /* SeaWiFS Level 3 Standard Mapped Image Products. */ /* Organized similar to MODIS Level 3 products. */ /* -------------------------------------------------------------------- */ case H4ST_SEAWIFS_L3: { CPLDebug( "HDF4Image", "Input dataset interpreted as SEAWIFS_L3" ); // Read band description for ( i = 1; i <= poDS->nBands; i++ ) { poDS->GetRasterBand( i )->SetDescription( CSLFetchNameValue( poDS->papszGlobalMetadata, "Parameter" ) ); } // Read coordinate system and geotransform matrix poDS->oSRS.SetWellKnownGeogCS( "WGS84" ); if ( EQUAL(CSLFetchNameValue(poDS->papszGlobalMetadata, "Map Projection"), "Equidistant Cylindrical") ) { poDS->oSRS.SetEquirectangular( 0.0, 0.0, 0.0, 0.0 ); poDS->oSRS.SetLinearUnits( SRS_UL_METER, 1 ); if ( poDS->pszProjection ) CPLFree( poDS->pszProjection ); poDS->oSRS.exportToWkt( &poDS->pszProjection ); } dfULX = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Westernmost Longitude") ); dfULY = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Northernmost Latitude") ); dfLRX = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Easternmost Longitude") ); dfLRY = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Southernmost Latitude") ); poDS->ToGeoref( &dfULX, &dfULY ); poDS->ToGeoref( &dfLRX, &dfLRY ); poDS->adfGeoTransform[0] = dfULX; poDS->adfGeoTransform[3] = dfULY; poDS->adfGeoTransform[1] = (dfLRX - dfULX) / poDS->nRasterXSize; poDS->adfGeoTransform[5] = (dfULY - dfLRY) / poDS->nRasterYSize; if ( dfULY > 0) // Northern hemisphere poDS->adfGeoTransform[5] = - poDS->adfGeoTransform[5]; poDS->adfGeoTransform[2] = 0.0; poDS->adfGeoTransform[4] = 0.0; poDS->bHasGeoTransform = TRUE; } break; /* -------------------------------------------------------------------- */ /* Generic SDS */ /* -------------------------------------------------------------------- */ case H4ST_UNKNOWN: { // This is a coastwatch convention. if( CSLFetchNameValue( poDS->papszLocalMetadata, "missing_value" ) ) { int i; for( i = 1; i <= poDS->nBands; i++ ) { poDS->GetRasterBand(i)->SetNoDataValue( CPLAtof( CSLFetchNameValue(poDS->papszLocalMetadata, "missing_value") ) ); } } // Coastwatch offset and scale. if( CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ) && CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ) ) { for( i = 1; i <= poDS->nBands; i++ ) { HDF4ImageRasterBand *poBand = (HDF4ImageRasterBand *) poDS->GetRasterBand(i); poBand->bHaveScale = poBand->bHaveOffset = TRUE; poBand->dfScale = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ) ); // See #4891 regarding offset interpretation. //poBand->dfOffset = -1 * poBand->dfScale * // CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, // "add_offset" ) ); poBand->dfOffset = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ) ); } } // this is a modis level3 convention (data from ACT) // Eg data/hdf/act/modis/MODAM2004280160000.L3_NOAA_GMX if( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingSlope" ) && CSLFetchNameValue( poDS->papszLocalMetadata, "scalingIntercept" ) ) { int i; CPLString osUnits; if( CSLFetchNameValue( poDS->papszLocalMetadata, "productUnits" ) ) { osUnits = CSLFetchNameValue( poDS->papszLocalMetadata, "productUnits" ); } for( i = 1; i <= poDS->nBands; i++ ) { HDF4ImageRasterBand *poBand = (HDF4ImageRasterBand *) poDS->GetRasterBand(i); poBand->bHaveScale = poBand->bHaveOffset = TRUE; poBand->dfScale = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingSlope" ) ); poBand->dfOffset = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingIntercept" ) ); poBand->osUnitType = osUnits; } } } break; /* -------------------------------------------------------------------- */ /* Hyperion Level 1. */ /* -------------------------------------------------------------------- */ case H4ST_HYPERION_L1: { CPLDebug( "HDF4Image", "Input dataset interpreted as HYPERION_L1" ); } break; default: break; } /* -------------------------------------------------------------------- */ /* Setup PAM info for this subdataset */ /* -------------------------------------------------------------------- */ poDS->SetPhysicalFilename( poDS->pszFilename ); poDS->SetSubdatasetName( osSubdatasetName ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex poDS->TryLoadXML(); poDS->oOvManager.Initialize( poDS, ":::VIRTUAL:::" ); CPLAcquireMutex(hHDF4Mutex, 1000.0); return( poDS ); } /************************************************************************/ /* Create() */ /************************************************************************/ GDALDataset *HDF4ImageDataset::Create( const char * pszFilename, int nXSize, int nYSize, int nBands, GDALDataType eType, char **papszOptions ) { /* -------------------------------------------------------------------- */ /* Create the dataset. */ /* -------------------------------------------------------------------- */ HDF4ImageDataset *poDS; const char *pszSDSName; int iBand; int32 iSDS = -1; int32 aiDimSizes[H4_MAX_VAR_DIMS]; if( nBands == 0 ) { CPLError( CE_Failure, CPLE_NotSupported, "Unable to export files with zero bands." ); return NULL; } poDS = new HDF4ImageDataset(); CPLMutexHolderD(&hHDF4Mutex); /* -------------------------------------------------------------------- */ /* Choose rank for the created dataset. */ /* -------------------------------------------------------------------- */ poDS->iRank = 3; if ( CSLFetchNameValue( papszOptions, "RANK" ) != NULL && EQUAL( CSLFetchNameValue( papszOptions, "RANK" ), "2" ) ) poDS->iRank = 2; poDS->hSD = SDstart( pszFilename, DFACC_CREATE ); if ( poDS->hSD == -1 ) { CPLError( CE_Failure, CPLE_OpenFailed, "Can't create HDF4 file %s", pszFilename ); CPLReleaseMutex(hHDF4Mutex); // Release mutex otherwise we'll deadlock with GDALDataset own mutex delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->iXDim = 1; poDS->iYDim = 0; poDS->iBandDim = 2; aiDimSizes[poDS->iXDim] = nXSize; aiDimSizes[poDS->iYDim] = nYSize; aiDimSizes[poDS->iBandDim] = nBands; if ( poDS->iRank == 2 ) { for ( iBand = 0; iBand < nBands; iBand++ ) { pszSDSName = CPLSPrintf( "Band%d", iBand ); switch ( eType ) { case GDT_Float64: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT64, poDS->iRank, aiDimSizes ); break; case GDT_Float32: iSDS = SDcreate( poDS-> hSD, pszSDSName, DFNT_FLOAT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT16, poDS->iRank, aiDimSizes ); break; case GDT_Int32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT32, poDS->iRank, aiDimSizes ); break; case GDT_Int16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT16, poDS->iRank, aiDimSizes ); break; case GDT_Byte: default: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT8, poDS->iRank, aiDimSizes ); break; } SDendaccess( iSDS ); } } else if ( poDS->iRank == 3 ) { pszSDSName = "3-dimensional Scientific Dataset"; poDS->iDataset = 0; switch ( eType ) { case GDT_Float64: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT64, poDS->iRank, aiDimSizes ); break; case GDT_Float32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT16, poDS->iRank, aiDimSizes ); break; case GDT_Int32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT32, poDS->iRank, aiDimSizes ); break; case GDT_Int16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT16, poDS->iRank, aiDimSizes ); break; case GDT_Byte: default: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT8, poDS->iRank, aiDimSizes ); break; } } else // Should never happen return NULL; if ( iSDS < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "Can't create SDS with rank %ld for file %s", (long)poDS->iRank, pszFilename ); return NULL; } poDS->nRasterXSize = nXSize; poDS->nRasterYSize = nYSize; poDS->eAccess = GA_Update; poDS->iDatasetType = HDF4_SDS; poDS->iSubdatasetType = H4ST_GDAL; poDS->nBands = nBands; /* -------------------------------------------------------------------- */ /* Create band information objects. */ /* -------------------------------------------------------------------- */ for( iBand = 1; iBand <= nBands; iBand++ ) poDS->SetBand( iBand, new HDF4ImageRasterBand( poDS, iBand, eType ) ); SDsetattr( poDS->hSD, "Signature", DFNT_CHAR8, strlen(pszGDALSignature) + 1, pszGDALSignature ); return (GDALDataset *) poDS; } /************************************************************************/ /* GDALRegister_HDF4Image() */ /************************************************************************/ void GDALRegister_HDF4Image() { GDALDriver *poDriver; if( GDALGetDriverByName( "HDF4Image" ) == NULL ) { poDriver = new GDALDriver(); poDriver->SetDescription( "HDF4Image" ); poDriver->SetMetadataItem( GDAL_DMD_LONGNAME, "HDF4 Dataset" ); poDriver->SetMetadataItem( GDAL_DMD_HELPTOPIC, "frmt_hdf4.html" ); poDriver->SetMetadataItem( GDAL_DMD_CREATIONDATATYPES, "Byte Int16 UInt16 Int32 UInt32 Float32 Float64" ); poDriver->SetMetadataItem( GDAL_DMD_CREATIONOPTIONLIST, "<CreationOptionList>" " <Option name='RANK' type='int' description='Rank of output SDS'/>" "</CreationOptionList>" ); poDriver->pfnOpen = HDF4ImageDataset::Open; poDriver->pfnCreate = HDF4ImageDataset::Create; GetGDALDriverManager()->RegisterDriver( poDriver ); } }