bool QgsRasterCalcNode::calculate( QMap<QString, QgsRasterMatrix*>& rasterData, QgsRasterMatrix& result ) const
{
//deprecated method
//convert QgsRasterMatrix to QgsRasterBlock and call replacement method
QMap<QString, QgsRasterBlock* > rasterBlockData;
QMap<QString, QgsRasterMatrix*>::const_iterator it = rasterData.constBegin();
for ( ; it != rasterData.constEnd(); ++it )
{
QgsRasterBlock* block = new QgsRasterBlock( QGis::Float32, it.value()->nColumns(), it.value()->nRows(), it.value()->nodataValue() );
for ( int row = 0; row < it.value()->nRows(); ++row )
{
for ( int col = 0; col < it.value()->nColumns(); ++col )
{
block->setValue( row, col, it.value()->data()[ row * it.value()->nColumns() + col ] );
}
}
rasterBlockData.insert( it.key(), block );
}
return calculate( rasterBlockData, result );
}
QgsRasterBlock * QgsRasterNuller::block( int bandNo, QgsRectangle const & extent, int width, int height )
{
QgsDebugMsg( "Entered" );
QgsRasterBlock *outputBlock = new QgsRasterBlock();
if ( !mInput )
{
return outputBlock;
}
//void * rasterData = mInput->block( bandNo, extent, width, height );
QgsRasterBlock *inputBlock = mInput->block( bandNo, extent, width, height );
// Input may be without no data value
//double noDataValue = mInput->noDataValue( bandNo );
double noDataValue = mOutputNoData;
for ( int i = 0; i < height; i++ )
{
for ( int j = 0; j < width; j++ )
{
//int index = i * width + j;
//double value = readValue( rasterData, dataType, index );
double value = inputBlock->value( i, j );
foreach ( NoData noData, mNoData )
{
if (( value >= noData.min && value <= noData.max ) ||
doubleNear( value, noData.min ) ||
doubleNear( value, noData.max ) )
{
inputBlock->setValue( i, j, noDataValue );
}
}
}
}
return inputBlock;
}
bool QgsGrassRasterImport::import()
{
QgsDebugMsg( "entered" );
if ( !mPipe )
{
setError( "Pipe is null." );
return false;
}
QgsRasterDataProvider * provider = mPipe->provider();
if ( !provider )
{
setError( "Pipe has no provider." );
return false;
}
if ( !provider->isValid() )
{
setError( "Provider is not valid." );
return false;
}
int redBand = 0;
int greenBand = 0;
int blueBand = 0;
for ( int band = 1; band <= provider->bandCount(); band++ )
{
QgsDebugMsg( QString( "band = %1" ).arg( band ) );
int colorInterpretation = provider->colorInterpretation( band );
if ( colorInterpretation == QgsRaster::RedBand )
{
redBand = band;
}
else if ( colorInterpretation == QgsRaster::GreenBand )
{
greenBand = band;
}
else if ( colorInterpretation == QgsRaster::BlueBand )
{
blueBand = band;
}
QGis::DataType qgis_out_type = QGis::UnknownDataType;
RASTER_MAP_TYPE data_type = -1;
switch ( provider->dataType( band ) )
{
case QGis::Byte:
case QGis::UInt16:
case QGis::Int16:
case QGis::UInt32:
case QGis::Int32:
qgis_out_type = QGis::Int32;
break;
case QGis::Float32:
qgis_out_type = QGis::Float32;
break;
case QGis::Float64:
qgis_out_type = QGis::Float64;
break;
case QGis::ARGB32:
case QGis::ARGB32_Premultiplied:
qgis_out_type = QGis::Int32; // split to multiple bands?
break;
case QGis::CInt16:
case QGis::CInt32:
case QGis::CFloat32:
case QGis::CFloat64:
case QGis::UnknownDataType:
setError( tr( "Data type %1 not supported" ).arg( provider->dataType( band ) ) );
return false;
}
QgsDebugMsg( QString( "data_type = %1" ).arg( data_type ) );
QString module = QgsGrass::qgisGrassModulePath() + "/qgis.r.in";
QStringList arguments;
QString name = mGrassObject.name();
if ( provider->bandCount() > 1 )
{
// raster.<band> to keep in sync with r.in.gdal
name += QString( ".%1" ).arg( band );
}
arguments.append( "output=" + name ); // get list of all output names
QTemporaryFile gisrcFile;
QProcess* process = 0;
try
{
process = QgsGrass::startModule( mGrassObject.gisdbase(), mGrassObject.location(), mGrassObject.mapset(), module, arguments, gisrcFile );
}
catch ( QgsGrass::Exception &e )
{
setError( e.what() );
return false;
}
QDataStream outStream( process );
outStream << mExtent << ( qint32 )mXSize << ( qint32 )mYSize;
outStream << ( qint32 )qgis_out_type;
// calculate reasonable block size (5MB)
int maximumTileHeight = 5000000 / mXSize;
maximumTileHeight = std::max( 1, maximumTileHeight );
// smaller if reprojecting so that it can be canceled quickly
if ( mPipe->projector() )
{
maximumTileHeight = std::max( 1, 100000 / mXSize );
}
QgsRasterIterator iter( mPipe->last() );
iter.setMaximumTileWidth( mXSize );
iter.setMaximumTileHeight( maximumTileHeight );
iter.startRasterRead( band, mXSize, mYSize, mExtent );
int iterLeft = 0;
int iterTop = 0;
int iterCols = 0;
int iterRows = 0;
QgsRasterBlock* block = 0;
process->setReadChannel( QProcess::StandardOutput );
while ( iter.readNextRasterPart( band, iterCols, iterRows, &block, iterLeft, iterTop ) )
{
for ( int row = 0; row < iterRows; row++ )
{
if ( !block->convert( qgis_out_type ) )
{
setError( tr( "Cannot convert block (%1) to data type %2" ).arg( block->toString() ).arg( qgis_out_type ) );
delete block;
return false;
}
// prepare null values
double noDataValue;
if ( block->hasNoDataValue() )
{
noDataValue = block->noDataValue();
}
else
{
switch ( qgis_out_type )
{
case QGis::Int32:
noDataValue = -2147483648.0;
break;
case QGis::Float32:
noDataValue = std::numeric_limits<float>::max() * -1.0;
break;
case QGis::Float64:
noDataValue = std::numeric_limits<double>::max() * -1.0;
break;
default: // should not happen
noDataValue = std::numeric_limits<double>::max() * -1.0;
}
for ( qgssize i = 0; i < ( qgssize )block->width()*block->height(); i++ )
{
if ( block->isNoData( i ) )
{
block->setValue( i, noDataValue );
}
}
}
char * data = block->bits( row, 0 );
int size = iterCols * block->dataTypeSize();
QByteArray byteArray = QByteArray::fromRawData( data, size ); // does not copy data and does not take ownership
if ( isCanceled() )
{
outStream << true; // cancel module
break;
}
outStream << false; // not canceled
outStream << noDataValue;
outStream << byteArray;
// Without waitForBytesWritten() it does not finish ok on Windows (process timeout)
process->waitForBytesWritten( -1 );
#ifndef Q_OS_WIN
// wait until the row is written to allow quick cancel (don't send data to buffer)
process->waitForReadyRead();
bool result;
outStream >> result;
#endif
}
delete block;
if ( isCanceled() )
{
outStream << true; // cancel module
break;
}
}
// TODO: send something back from module and read it here to close map correctly in module
process->closeWriteChannel();
// TODO: best timeout?
process->waitForFinished( 30000 );
QString stdoutString = process->readAllStandardOutput().data();
QString stderrString = process->readAllStandardError().data();
QString processResult = QString( "exitStatus=%1, exitCode=%2, error=%3, errorString=%4 stdout=%5, stderr=%6" )
.arg( process->exitStatus() ).arg( process->exitCode() )
.arg( process->error() ).arg( process->errorString() )
.arg( stdoutString.replace( "\n", ", " ) ).arg( stderrString.replace( "\n", ", " ) );
QgsDebugMsg( "processResult: " + processResult );
if ( process->exitStatus() != QProcess::NormalExit )
{
setError( process->errorString() );
delete process;
return false;
}
if ( process->exitCode() != 0 )
{
setError( stderrString );
delete process;
return false;
}
delete process;
}
QgsDebugMsg( QString( "redBand = %1 greenBand = %2 blueBand = %3" ).arg( redBand ).arg( greenBand ).arg( blueBand ) );
if ( redBand > 0 && greenBand > 0 && blueBand > 0 )
{
// TODO: check if the group exists
// I_find_group()
QString name = mGrassObject.name();
G_TRY
{
QgsGrass::setMapset( mGrassObject.gisdbase(), mGrassObject.location(), mGrassObject.mapset() );
struct Ref ref;
I_get_group_ref( name.toUtf8().data(), &ref );
QString redName = name + QString( ".%1" ).arg( redBand );
QString greenName = name + QString( ".%1" ).arg( greenBand );
QString blueName = name + QString( ".%1" ).arg( blueBand );
I_add_file_to_group_ref( redName.toUtf8().data(), mGrassObject.mapset().toUtf8().data(), &ref );
I_add_file_to_group_ref( greenName.toUtf8().data(), mGrassObject.mapset().toUtf8().data(), &ref );
I_add_file_to_group_ref( blueName.toUtf8().data(), mGrassObject.mapset().toUtf8().data(), &ref );
I_put_group_ref( name.toUtf8().data(), &ref );
}
G_CATCH( QgsGrass::Exception &e )
{
QgsDebugMsg( QString( "Cannot create group: %1" ).arg( e.what() ) );
}
QgsRasterBlock * QgsRasterNuller::block( int bandNo, QgsRectangle const & extent, int width, int height )
{
QgsDebugMsg( "Entered" );
if ( !mInput )
{
return new QgsRasterBlock();
}
QgsRasterBlock *inputBlock = mInput->block( bandNo, extent, width, height );
if ( !inputBlock )
{
return new QgsRasterBlock();
}
// We don't support nuller for color types
if ( QgsRasterBlock::typeIsColor( inputBlock->dataType() ) )
{
return inputBlock;
}
QgsRasterBlock *outputBlock = 0;
if ( mHasOutputNoData.value( bandNo - 1 ) || inputBlock->hasNoDataValue() )
{
double noDataValue;
if ( mHasOutputNoData.value( bandNo - 1 ) )
{
noDataValue = mOutputNoData.value( bandNo - 1 );
}
else
{
noDataValue = inputBlock->noDataValue();
}
outputBlock = new QgsRasterBlock( inputBlock->dataType(), width, height, noDataValue );
}
else
{
outputBlock = new QgsRasterBlock( inputBlock->dataType(), width, height );
}
for ( int i = 0; i < height; i++ )
{
for ( int j = 0; j < width; j++ )
{
double value = inputBlock->value( i, j );
bool isNoData = inputBlock->isNoData( i, j );
if ( QgsRasterRange::contains( value, mNoData.value( bandNo - 1 ) ) )
{
isNoData = true;
}
outputBlock->setValue( i, j, inputBlock->value( i, j ) );
if ( isNoData )
{
outputBlock->setIsNoData( i, j );
}
else
{
outputBlock->setValue( i, j, value );
}
}
}
delete inputBlock;
return outputBlock;
}
QgsRasterBlock * QgsRasterDataProvider::block( int theBandNo, QgsRectangle const & theExtent, int theWidth, int theHeight )
{
QgsDebugMsg( QString( "theBandNo = %1 theWidth = %2 theHeight = %3" ).arg( theBandNo ).arg( theWidth ).arg( theHeight ) );
QgsDebugMsg( QString( "theExtent = %1" ).arg( theExtent.toString() ) );
QgsRasterBlock *block = new QgsRasterBlock( dataType( theBandNo ), theWidth, theHeight, noDataValue( theBandNo ) );
if ( block->isEmpty() )
{
QgsDebugMsg( "Couldn't create raster block" );
return block;
}
// Read necessary extent only
QgsRectangle tmpExtent = extent().intersect( &theExtent );
if ( tmpExtent.isEmpty() )
{
QgsDebugMsg( "Extent outside provider extent" );
block->setIsNoData();
return block;
}
double xRes = theExtent.width() / theWidth;
double yRes = theExtent.height() / theHeight;
double tmpXRes, tmpYRes;
double providerXRes = 0;
double providerYRes = 0;
if ( capabilities() & ExactResolution )
{
providerXRes = extent().width() / xSize();
providerYRes = extent().height() / ySize();
tmpXRes = qMax( providerXRes, xRes );
tmpYRes = qMax( providerYRes, yRes );
if ( doubleNear( tmpXRes, xRes ) ) tmpXRes = xRes;
if ( doubleNear( tmpYRes, yRes ) ) tmpYRes = yRes;
}
else
{
tmpXRes = xRes;
tmpYRes = yRes;
}
if ( tmpExtent != theExtent ||
tmpXRes > xRes || tmpYRes > yRes )
{
// Read smaller extent or lower resolution
// Calculate row/col limits (before tmpExtent is aligned)
int fromRow = qRound(( theExtent.yMaximum() - tmpExtent.yMaximum() ) / yRes );
int toRow = qRound(( theExtent.yMaximum() - tmpExtent.yMinimum() ) / yRes ) - 1;
int fromCol = qRound(( tmpExtent.xMinimum() - theExtent.xMinimum() ) / xRes ) ;
int toCol = qRound(( tmpExtent.xMaximum() - theExtent.xMinimum() ) / xRes ) - 1;
QgsDebugMsg( QString( "fromRow = %1 toRow = %2 fromCol = %3 toCol = %4" ).arg( fromRow ).arg( toRow ).arg( fromCol ).arg( toCol ) );
if ( fromRow < 0 || fromRow >= theHeight || toRow < 0 || toRow >= theHeight ||
fromCol < 0 || fromCol >= theWidth || toCol < 0 || toCol >= theWidth )
{
// Should not happen
QgsDebugMsg( "Row or column limits out of range" );
return block;
}
// If lower source resolution is used, the extent must beS aligned to original
// resolution to avoid possible shift due to resampling
if ( tmpXRes > xRes )
{
int col = floor(( tmpExtent.xMinimum() - extent().xMinimum() ) / providerXRes );
tmpExtent.setXMinimum( extent().xMinimum() + col * providerXRes );
col = ceil(( tmpExtent.xMaximum() - extent().xMinimum() ) / providerXRes );
tmpExtent.setXMaximum( extent().xMinimum() + col * providerXRes );
}
if ( tmpYRes > yRes )
{
int row = floor(( extent().yMaximum() - tmpExtent.yMaximum() ) / providerYRes );
tmpExtent.setYMaximum( extent().yMaximum() - row * providerYRes );
row = ceil(( extent().yMaximum() - tmpExtent.yMinimum() ) / providerYRes );
tmpExtent.setYMinimum( extent().yMaximum() - row * providerYRes );
}
int tmpWidth = qRound( tmpExtent.width() / tmpXRes );
int tmpHeight = qRound( tmpExtent.height() / tmpYRes );
tmpXRes = tmpExtent.width() / tmpWidth;
tmpYRes = tmpExtent.height() / tmpHeight;
QgsDebugMsg( QString( "Reading smaller block tmpWidth = %1 theHeight = %2" ).arg( tmpWidth ).arg( tmpHeight ) );
QgsDebugMsg( QString( "tmpExtent = %1" ).arg( tmpExtent.toString() ) );
block->setIsNoData();
QgsRasterBlock *tmpBlock = new QgsRasterBlock( dataType( theBandNo ), tmpWidth, tmpHeight, noDataValue( theBandNo ) );
readBlock( theBandNo, tmpExtent, tmpWidth, tmpHeight, tmpBlock->data() );
int pixelSize = dataTypeSize( theBandNo );
double xMin = theExtent.xMinimum();
double yMax = theExtent.yMaximum();
double tmpXMin = tmpExtent.xMinimum();
double tmpYMax = tmpExtent.yMaximum();
for ( int row = fromRow; row <= toRow; row++ )
{
double y = yMax - ( row + 0.5 ) * yRes;
int tmpRow = floor(( tmpYMax - y ) / tmpYRes );
for ( int col = fromCol; col <= toCol; col++ )
{
double x = xMin + ( col + 0.5 ) * xRes;
int tmpCol = floor(( x - tmpXMin ) / tmpXRes );
if ( tmpRow < 0 || tmpRow >= tmpHeight || tmpCol < 0 || tmpCol >= tmpWidth )
{
QgsDebugMsg( "Source row or column limits out of range" );
block->setIsNoData(); // so that the problem becomes obvious and fixed
delete tmpBlock;
return block;
}
size_t tmpIndex = tmpRow * tmpWidth + tmpCol;
size_t index = row * theWidth + col;
char *tmpBits = tmpBlock->bits( tmpIndex );
char *bits = block->bits( index );
if ( !tmpBits )
{
QgsDebugMsg( QString( "Cannot get input block data tmpRow = %1 tmpCol = %2 tmpIndex = %3." ).arg( tmpRow ).arg( tmpCol ).arg( tmpIndex ) );
continue;
}
if ( !bits )
{
QgsDebugMsg( "Cannot set output block data." );
continue;
}
memcpy( bits, tmpBits, pixelSize );
}
}
delete tmpBlock;
}
else
{
readBlock( theBandNo, theExtent, theWidth, theHeight, block->data() );
}
// apply user no data values
// TODO: there are other readBlock methods where no data are not applied
QList<QgsRasterBlock::Range> myNoDataRangeList = userNoDataValue( theBandNo );
if ( !myNoDataRangeList.isEmpty() )
{
double myNoDataValue = noDataValue( theBandNo );
size_t size = theWidth * theHeight;
for ( size_t i = 0; i < size; i++ )
{
double value = block->value( i );
if ( QgsRasterBlock::valueInRange( value, myNoDataRangeList ) )
{
block->setValue( i, myNoDataValue );
}
}
}
return block;
}
