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/*
* Copyright (C) 2021 The Android Open Source Project
*
* 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 com.google.android.renderscript_test
import android.graphics.Bitmap
import android.renderscript.Allocation
import android.renderscript.Element
import android.renderscript.RenderScript
import android.renderscript.Script
import android.renderscript.ScriptIntrinsicLUT
import android.renderscript.Type
import com.google.android.renderscript.Range2d
/**
* Does a LookUpTable operation using the RenderScript Intrinsics.
*/
@ExperimentalUnsignedTypes
fun intrinsicLut(
context: RenderScript,
inputArray: ByteArray,
sizeX: Int,
sizeY: Int,
newRed: ByteArray,
newGreen: ByteArray,
newBlue: ByteArray,
newAlpha: ByteArray,
restriction: Range2d?
): ByteArray {
val scriptLut: ScriptIntrinsicLUT = ScriptIntrinsicLUT.create(
context,
Element.U8_4(context)
)
val builder = Type.Builder(context, Element.U8_4(context))
builder.setX(sizeX)
builder.setY(sizeY)
val arrayType = builder.create()
val inputAllocation = Allocation.createTyped(context, arrayType)
val outAllocation = Allocation.createTyped(context, arrayType)
inputAllocation.copyFrom(inputArray)
val intrinsicOutArray = ByteArray(sizeX * sizeY * 4)
for (v in 0..255) {
scriptLut.setRed(v, newRed[v].toUByte().toInt())
scriptLut.setGreen(v, newGreen[v].toUByte().toInt())
scriptLut.setBlue(v, newBlue[v].toUByte().toInt())
scriptLut.setAlpha(v, newAlpha[v].toUByte().toInt())
}
if (restriction != null) {
outAllocation.copyFrom(intrinsicOutArray) // To initialize to zero
val options = Script.LaunchOptions()
options.setX(restriction.startX, restriction.endX)
options.setY(restriction.startY, restriction.endY)
scriptLut.forEach(inputAllocation, outAllocation, options)
} else {
scriptLut.forEach(inputAllocation, outAllocation)
}
outAllocation.copyTo(intrinsicOutArray)
inputAllocation.destroy()
outAllocation.destroy()
arrayType.destroy()
scriptLut.destroy()
return intrinsicOutArray
}
@ExperimentalUnsignedTypes
fun intrinsicLut(
context: RenderScript,
bitmap: Bitmap,
newRed: ByteArray,
newGreen: ByteArray,
newBlue: ByteArray,
newAlpha: ByteArray,
restriction: Range2d?
): ByteArray {
val baseElement = renderScriptElementForBitmap(context, bitmap)
val scriptLut: ScriptIntrinsicLUT = ScriptIntrinsicLUT.create(context, baseElement)
val inputAllocation = Allocation.createFromBitmap(context, bitmap)
inputAllocation.copyFrom(bitmap)
val outAllocation = Allocation.createTyped(context, inputAllocation.type)
val intrinsicOutArray = ByteArray(bitmap.byteCount)
for (v in 0..255) {
scriptLut.setRed(v, newRed[v].toUByte().toInt())
scriptLut.setGreen(v, newGreen[v].toUByte().toInt())
scriptLut.setBlue(v, newBlue[v].toUByte().toInt())
scriptLut.setAlpha(v, newAlpha[v].toUByte().toInt())
}
if (restriction != null) {
outAllocation.copyFrom(intrinsicOutArray) // To initialize to zero
val options = Script.LaunchOptions()
options.setX(restriction.startX, restriction.endX)
options.setY(restriction.startY, restriction.endY)
scriptLut.forEach(inputAllocation, outAllocation, options)
} else {
scriptLut.forEach(inputAllocation, outAllocation)
}
outAllocation.copyTo(intrinsicOutArray)
inputAllocation.destroy()
outAllocation.destroy()
scriptLut.destroy()
return intrinsicOutArray
}
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