83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/*
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* Copyright (C) 2012 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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#include <cstdint>
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#include "RenderScriptToolkit.h"
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#include "TaskProcessor.h"
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#include "Utils.h"
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#define LOG_TAG "renderscript.toolkit.Lut"
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namespace android {
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namespace renderscript {
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class LutTask : public Task {
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const uchar4* mIn;
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uchar4* mOut;
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const uchar* mRedTable;
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const uchar* mGreenTable;
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const uchar* mBlueTable;
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const uchar* mAlphaTable;
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// Process a 2D tile of the overall work. threadIndex identifies which thread does the work.
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virtual void processData(int threadIndex, size_t startX, size_t startY, size_t endX,
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size_t endY) override;
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public:
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LutTask(const uint8_t* input, uint8_t* output, size_t sizeX, size_t sizeY, const uint8_t* red,
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const uint8_t* green, const uint8_t* blue, const uint8_t* alpha,
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const Restriction* restriction)
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: Task{sizeX, sizeY, 4, true, restriction},
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mIn{reinterpret_cast<const uchar4*>(input)},
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mOut{reinterpret_cast<uchar4*>(output)},
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mRedTable{red},
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mGreenTable{green},
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mBlueTable{blue},
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mAlphaTable{alpha} {}
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};
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void LutTask::processData(int /* threadIndex */, size_t startX, size_t startY, size_t endX,
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size_t endY) {
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for (size_t y = startY; y < endY; y++) {
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size_t offset = mSizeX * y + startX;
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const uchar4* in = mIn + offset;
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uchar4* out = mOut + offset;
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for (size_t x = startX; x < endX; x++) {
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auto v = *in;
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*out = uchar4{mRedTable[v.x], mGreenTable[v.y], mBlueTable[v.z], mAlphaTable[v.w]};
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in++;
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out++;
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}
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}
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}
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void RenderScriptToolkit::lut(const uint8_t* input, uint8_t* output, size_t sizeX, size_t sizeY,
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const uint8_t* red, const uint8_t* green, const uint8_t* blue,
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const uint8_t* alpha, const Restriction* restriction) {
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#ifdef ANDROID_RENDERSCRIPT_TOOLKIT_VALIDATE
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if (!validRestriction(LOG_TAG, sizeX, sizeY, restriction)) {
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return;
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}
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#endif
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LutTask task(input, output, sizeX, sizeY, red, green, blue, alpha, restriction);
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processor->doTask(&task);
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}
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} // namespace renderscript
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} // namespace android
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