1 files changed, 196 insertions, 0 deletions
diff --git a/test-app/src/main/java/com/google/android/renderscript_test/IntrinsicHistogram.kt b/test-app/src/main/java/com/google/android/renderscript_test/IntrinsicHistogram.kt
new file mode 100644
index 0000000..31a27d9
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+++ b/test-app/src/main/java/com/google/android/renderscript_test/IntrinsicHistogram.kt
@@ -0,0 +1,196 @@
+/*
+ * 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.ScriptIntrinsicHistogram
+import android.renderscript.Type
+import com.google.android.renderscript.Range2d
+
+/**
+ * Does a Histogram operation using the RenderScript Intrinsics.
+ */
+fun intrinsicHistogram(
+    context: RenderScript,
+    inputArray: ByteArray,
+    vectorSize: Int,
+    sizeX: Int,
+    sizeY: Int,
+    restriction: Range2d?
+): IntArray {
+    val element = renderScriptVectorElementForU8(context, vectorSize)
+    val scriptHistogram = ScriptIntrinsicHistogram.create(context, element)
+    val builder = Type.Builder(context, element)
+    builder.setX(sizeX)
+    builder.setY(sizeY)
+    val arrayType = builder.create()
+    val inputAllocation = Allocation.createTyped(context, arrayType)
+    val outAllocation =
+        Allocation.createSized(
+            context,
+            renderScriptVectorElementForI32(context, vectorSize),
+            256
+        )
+    inputAllocation.copyFrom(inputArray)
+    scriptHistogram.setOutput(outAllocation)
+    if (restriction != null) {
+        val options = Script.LaunchOptions()
+        options.setX(restriction.startX, restriction.endX)
+        options.setY(restriction.startY, restriction.endY)
+        scriptHistogram.forEach(inputAllocation, options)
+    } else {
+        scriptHistogram.forEach(inputAllocation)
+    }
+
+    val intrinsicOutArray = IntArray(256 * paddedSize(vectorSize))
+    outAllocation.copyTo(intrinsicOutArray)
+    inputAllocation.destroy()
+    outAllocation.destroy()
+    arrayType.destroy()
+    scriptHistogram.destroy()
+    return intrinsicOutArray
+}
+
+fun intrinsicHistogram(
+    context: RenderScript,
+    bitmap: Bitmap,
+    restriction: Range2d?
+): IntArray {
+    val baseElement = renderScriptElementForBitmap(context, bitmap)
+    val scriptHistogram = ScriptIntrinsicHistogram.create(context, baseElement)
+    val inputAllocation = Allocation.createFromBitmap(context, bitmap)
+    inputAllocation.copyFrom(bitmap)
+    val vectorSize = vectorSizeOfBitmap(bitmap)
+    val outAllocation =
+        Allocation.createSized(
+            context,
+            renderScriptVectorElementForI32(context, vectorSize),
+            256
+        )
+    scriptHistogram.setOutput(outAllocation)
+    if (restriction != null) {
+        val options = Script.LaunchOptions()
+        options.setX(restriction.startX, restriction.endX)
+        options.setY(restriction.startY, restriction.endY)
+        scriptHistogram.forEach(inputAllocation, options)
+    } else {
+        scriptHistogram.forEach(inputAllocation)
+    }
+
+    val intrinsicOutArray = IntArray(256 * vectorSize)
+    outAllocation.copyTo(intrinsicOutArray)
+    inputAllocation.destroy()
+    outAllocation.destroy()
+    scriptHistogram.destroy()
+    return intrinsicOutArray
+}
+
+fun intrinsicHistogramDot(
+    context: RenderScript,
+    inputArray: ByteArray,
+    vectorSize: Int,
+    sizeX: Int,
+    sizeY: Int,
+    coefficients: FloatArray?,
+    restriction: Range2d?
+): IntArray {
+    val element = renderScriptVectorElementForU8(context, vectorSize)
+    val scriptHistogram = ScriptIntrinsicHistogram.create(context, element)
+    val builder = Type.Builder(context, element)
+    builder.setX(sizeX)
+    builder.setY(sizeY)
+    val arrayType = builder.create()
+    val inputAllocation = Allocation.createTyped(context, arrayType)
+    val outAllocation =
+        Allocation.createSized(context, Element.I32(context), 256)
+    inputAllocation.copyFrom(inputArray)
+
+    if (coefficients != null) {
+        require(coefficients.size == vectorSize) {
+            "RenderScriptToolkit tests. $vectorSize coefficients are required for histogram. " +
+                "${coefficients.size} provided."
+        }
+        scriptHistogram.setDotCoefficients(
+            coefficients[0],
+            if (vectorSize > 1) coefficients[1] else 0f,
+            if (vectorSize > 2) coefficients[2] else 0f,
+            if (vectorSize > 3) coefficients[3] else 0f
+        )
+    }
+    scriptHistogram.setOutput(outAllocation)
+    if (restriction != null) {
+        val options = Script.LaunchOptions()
+        options.setX(restriction.startX, restriction.endX)
+        options.setY(restriction.startY, restriction.endY)
+        scriptHistogram.forEach_Dot(inputAllocation, options)
+    } else {
+        scriptHistogram.forEach_Dot(inputAllocation)
+    }
+    val intrinsicOutArray = IntArray(256)
+    outAllocation.copyTo(intrinsicOutArray)
+    inputAllocation.destroy()
+    outAllocation.destroy()
+    arrayType.destroy()
+    scriptHistogram.destroy()
+    return intrinsicOutArray
+}
+
+fun intrinsicHistogramDot(
+    context: RenderScript,
+    bitmap: Bitmap,
+    coefficients: FloatArray?,
+    restriction: Range2d?
+): IntArray {
+    val baseElement = renderScriptElementForBitmap(context, bitmap)
+    val scriptHistogram = ScriptIntrinsicHistogram.create(context, baseElement)
+    val inputAllocation = Allocation.createFromBitmap(context, bitmap)
+    inputAllocation.copyFrom(bitmap)
+    val outAllocation =
+        Allocation.createSized(context, Element.I32(context), 256)
+
+    if (coefficients != null) {
+        require(coefficients.size == 4) {
+            "RenderScriptToolkit tests. Four coefficients are required for histogram. " +
+                "${coefficients.size} provided."
+        }
+        scriptHistogram.setDotCoefficients(
+            coefficients[0],
+            coefficients[1],
+            coefficients[2],
+            coefficients[3]
+        )
+    }
+    scriptHistogram.setOutput(outAllocation)
+    if (restriction != null) {
+        val options = Script.LaunchOptions()
+        options.setX(restriction.startX, restriction.endX)
+        options.setY(restriction.startY, restriction.endY)
+        scriptHistogram.forEach_Dot(inputAllocation, options)
+    } else {
+        scriptHistogram.forEach_Dot(inputAllocation)
+    }
+    val intrinsicOutArray = IntArray(256)
+    outAllocation.copyTo(intrinsicOutArray)
+    inputAllocation.destroy()
+    outAllocation.destroy()
+    scriptHistogram.destroy()
+    return intrinsicOutArray
+}