71 lines
2.3 KiB
Kotlin
71 lines
2.3 KiB
Kotlin
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.testapp
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import android.graphics.ImageFormat
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import android.renderscript.Allocation
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import android.renderscript.Element
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import android.renderscript.RenderScript
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import android.renderscript.ScriptIntrinsicYuvToRGB
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import android.renderscript.Type
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import android.renderscript.toolkit.YuvFormat
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/**
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* Does a YUV to RGB operation using the RenderScript Intrinsics.
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*/
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fun intrinsicYuvToRgb(
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context: RenderScript,
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inputArray: ByteArray,
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sizeX: Int,
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sizeY: Int,
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format: YuvFormat
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): ByteArray {
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val scriptYuvToRgb = ScriptIntrinsicYuvToRGB.create(
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context,
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Element.YUV(context)
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)
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val inputBuilder = Type.Builder(context, Element.YUV(context))
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inputBuilder.setX(sizeX)
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inputBuilder.setY(sizeY)
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when (format) {
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YuvFormat.NV21 -> inputBuilder.setYuvFormat(ImageFormat.NV21)
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YuvFormat.YV12 -> inputBuilder.setYuvFormat(ImageFormat.YV12)
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else -> require(false) { "Unknown YUV format $format" }
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}
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val inputArrayType = inputBuilder.create()
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val inputAllocation = Allocation.createTyped(context, inputArrayType)
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val outputBuilder = Type.Builder(context, Element.U8_4(context))
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outputBuilder.setX(sizeX)
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outputBuilder.setY(sizeY)
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val outputArrayType = outputBuilder.create()
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val outAllocation = Allocation.createTyped(context, outputArrayType)
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val intrinsicOutArray = ByteArray(sizeX * sizeY * 4)
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inputAllocation.copyFrom(inputArray)
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scriptYuvToRgb.setInput(inputAllocation)
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scriptYuvToRgb.forEach(outAllocation)
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outAllocation.copyTo(intrinsicOutArray)
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inputAllocation.destroy()
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outAllocation.destroy()
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inputArrayType.destroy()
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outputArrayType.destroy()
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scriptYuvToRgb.destroy()
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return intrinsicOutArray
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}
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