1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package com.example.testapp
18
19 import android.graphics.Bitmap
20 import android.renderscript.Allocation
21 import android.renderscript.RenderScript
22 import android.renderscript.Script
23 import android.renderscript.ScriptIntrinsicResize
24 import android.renderscript.Type
25 import android.renderscript.toolkit.Range2d
26
27 /**
28 * Does a Resize operation using the RenderScript Intrinsics.
29 */
intrinsicResizenull30 fun intrinsicResize(
31 context: RenderScript,
32 inputArray: ByteArray,
33 vectorSize: Int,
34 inSizeX: Int,
35 inSizeY: Int,
36 outSizeX: Int,
37 outSizeY: Int,
38 restriction: Range2d?
39 ): ByteArray {
40 val scriptResize = ScriptIntrinsicResize.create(context)
41 val builder = Type.Builder(
42 context,
43 renderScriptVectorElementForU8(context, vectorSize)
44 )
45 builder.setX(inSizeX)
46 builder.setY(inSizeY)
47 val inputArrayType = builder.create()
48 val inputAllocation = Allocation.createTyped(context, inputArrayType)
49 builder.setX(outSizeX)
50 builder.setY(outSizeY)
51 val outputArrayType = builder.create()
52 val outAllocation = Allocation.createTyped(context, outputArrayType)
53 val intrinsicOutArray = ByteArray(outSizeX * outSizeY * paddedSize(vectorSize))
54
55 inputAllocation.copyFrom(inputArray)
56 scriptResize.setInput(inputAllocation)
57 if (restriction != null) {
58 outAllocation.copyFrom(intrinsicOutArray) // To initialize to zero
59 val options = Script.LaunchOptions()
60 options.setX(restriction.startX, restriction.endX)
61 options.setY(restriction.startY, restriction.endY)
62 scriptResize.forEach_bicubic(outAllocation, options)
63 } else {
64 scriptResize.forEach_bicubic(outAllocation)
65 }
66 outAllocation.copyTo(intrinsicOutArray)
67
68 inputAllocation.destroy()
69 outAllocation.destroy()
70 scriptResize.destroy()
71 inputArrayType.destroy()
72 outputArrayType.destroy()
73 return intrinsicOutArray
74 }
75
intrinsicResizenull76 fun intrinsicResize(
77 context: RenderScript,
78 bitmap: Bitmap,
79 outSizeX: Int,
80 outSizeY: Int,
81 restriction: Range2d?
82 ): ByteArray {
83 val scriptResize = ScriptIntrinsicResize.create(context)
84 val inputAllocation = Allocation.createFromBitmap(context, bitmap)
85 inputAllocation.copyFrom(bitmap)
86
87 val vectorSize = when (bitmap.config) {
88 Bitmap.Config.ARGB_8888 -> 4
89 Bitmap.Config.ALPHA_8 -> 1
90 else -> error("Unrecognized bitmap config $bitmap.config")
91 }
92 val builder = Type.Builder(
93 context,
94 renderScriptVectorElementForU8(context, vectorSize)
95 )
96 builder.setX(outSizeX)
97 builder.setY(outSizeY)
98 val outputArrayType = builder.create()
99 val outAllocation = Allocation.createTyped(context, outputArrayType)
100 val intrinsicOutArray = ByteArray(outSizeX * outSizeY * vectorSize)
101
102 scriptResize.setInput(inputAllocation)
103 if (restriction != null) {
104 outAllocation.copyFrom(intrinsicOutArray) // To initialize to zero
105 val options = Script.LaunchOptions()
106 options.setX(restriction.startX, restriction.endX)
107 options.setY(restriction.startY, restriction.endY)
108 scriptResize.forEach_bicubic(outAllocation, options)
109 } else {
110 scriptResize.forEach_bicubic(outAllocation)
111 }
112 outAllocation.copyTo(intrinsicOutArray)
113
114 inputAllocation.destroy()
115 outAllocation.destroy()
116 outputArrayType.destroy()
117 scriptResize.destroy()
118 return intrinsicOutArray
119 }
120