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UByteGeoTiffMultibandTile.scala
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UByteGeoTiffMultibandTile.scala
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/*
* Copyright 2016 Azavea
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package geotrellis.raster.io.geotiff
import geotrellis.raster._
import geotrellis.raster.io.geotiff.compression._
import java.nio.ByteBuffer
class UByteGeoTiffMultibandTile(
compressedBytes: SegmentBytes,
decompressor: Decompressor,
segmentLayout: GeoTiffSegmentLayout,
compression: Compression,
bandCount: Int,
val cellType: UByteCells with NoDataHandling,
overviews: List[UByteGeoTiffMultibandTile] = Nil
) extends GeoTiffMultibandTile(compressedBytes, decompressor, segmentLayout, compression, bandCount, overviews)
with UByteGeoTiffSegmentCollection {
val noDataValue: Option[Int] = cellType match {
case UByteCellType => None
case UByteConstantNoDataCellType => Some(0)
case UByteUserDefinedNoDataCellType(nd) => Some(nd)
}
protected def createSegmentCombiner(targetSize: Int): SegmentCombiner =
new SegmentCombiner(bandCount) {
private val arr = Array.ofDim[Byte](targetSize)
def set(targetIndex: Int, v: Int): Unit = {
arr(targetIndex) = i2b(v)
}
def setDouble(targetIndex: Int, v: Double): Unit = {
arr(targetIndex) = d2b(v)
}
def getBytes(): Array[Byte] = arr
}
def withNoData(noDataValue: Option[Double]): UByteGeoTiffMultibandTile =
new UByteGeoTiffMultibandTile(compressedBytes, decompressor, segmentLayout, compression, bandCount, cellType.withNoData(noDataValue), overviews.map(_.withNoData(noDataValue)))
def interpretAs(newCellType: CellType): GeoTiffMultibandTile = {
newCellType match {
case dt: UByteCells with NoDataHandling =>
new UByteGeoTiffMultibandTile(compressedBytes, decompressor, segmentLayout, compression, bandCount, dt, overviews.map(_.interpretAs(newCellType)).collect { case gt: UByteGeoTiffMultibandTile => gt })
case _ =>
withNoData(None).convert(newCellType)
}
}
}