geotrellis.render.png.Util.scala Maven / Gradle / Ivy
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package geotrellis.render.png
import java.nio.ByteBuffer
import geotrellis._
object Util {
@inline final def byte(i:Int):Byte = i.toByte
@inline final def shift(n:Int, i:Int):Byte = byte(n >> i)
/**
* ByteBuffer boiler-plate stuff below.
*/
def initByteBuffer32(bb:ByteBuffer, d:Array[Int], size:Int) {
var j = 0
while (j < size) {
val z = d(j)
bb.put(byte(z >> 24))
bb.put(byte(z >> 16))
bb.put(byte(z >> 8))
bb.put(byte(z))
j += 1
}
}
def initByteBuffer24(bb:ByteBuffer, d:Array[Int], size:Int) {
var j = 0
while (j < size) {
val z = d(j)
bb.put(byte(z >> 16))
bb.put(byte(z >> 8))
bb.put(byte(z))
j += 1
}
}
def initByteBuffer16(bb:ByteBuffer, d:Array[Int], size:Int) {
var j = 0
while (j < size) {
val z = d(j)
bb.put(byte(z >> 8))
bb.put(byte(z))
j += 1
}
}
def initByteBuffer8(bb:ByteBuffer, d:Array[Int], size:Int) {
var j = 0
while (j < size) {
bb.put(byte(d(j)))
j += 1
}
}
}