1 /*
2 * Copyright (C) 2012 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 #include <cstdint>
18
19 #include "RenderScriptToolkit.h"
20 #include "TaskProcessor.h"
21 #include "Utils.h"
22
23 #define LOG_TAG "renderscript.toolkit.Lut"
24
25 namespace android {
26 namespace renderscript {
27
28 class LutTask : public Task {
29 const uchar4* mIn;
30 uchar4* mOut;
31 const uchar* mRedTable;
32 const uchar* mGreenTable;
33 const uchar* mBlueTable;
34 const uchar* mAlphaTable;
35
36 // Process a 2D tile of the overall work. threadIndex identifies which thread does the work.
37 virtual void processData(int threadIndex, size_t startX, size_t startY, size_t endX,
38 size_t endY) override;
39
40 public:
LutTask(const uint8_t * input,uint8_t * output,size_t sizeX,size_t sizeY,const uint8_t * red,const uint8_t * green,const uint8_t * blue,const uint8_t * alpha,const Restriction * restriction)41 LutTask(const uint8_t* input, uint8_t* output, size_t sizeX, size_t sizeY, const uint8_t* red,
42 const uint8_t* green, const uint8_t* blue, const uint8_t* alpha,
43 const Restriction* restriction)
44 : Task{sizeX, sizeY, 4, true, restriction},
45 mIn{reinterpret_cast<const uchar4*>(input)},
46 mOut{reinterpret_cast<uchar4*>(output)},
47 mRedTable{red},
48 mGreenTable{green},
49 mBlueTable{blue},
50 mAlphaTable{alpha} {}
51 };
52
processData(int,size_t startX,size_t startY,size_t endX,size_t endY)53 void LutTask::processData(int /* threadIndex */, size_t startX, size_t startY, size_t endX,
54 size_t endY) {
55 for (size_t y = startY; y < endY; y++) {
56 size_t offset = mSizeX * y + startX;
57 const uchar4* in = mIn + offset;
58 uchar4* out = mOut + offset;
59 for (size_t x = startX; x < endX; x++) {
60 auto v = *in;
61 *out = uchar4{mRedTable[v.x], mGreenTable[v.y], mBlueTable[v.z], mAlphaTable[v.w]};
62 in++;
63 out++;
64 }
65 }
66 }
67
lut(const uint8_t * input,uint8_t * output,size_t sizeX,size_t sizeY,const uint8_t * red,const uint8_t * green,const uint8_t * blue,const uint8_t * alpha,const Restriction * restriction)68 void RenderScriptToolkit::lut(const uint8_t* input, uint8_t* output, size_t sizeX, size_t sizeY,
69 const uint8_t* red, const uint8_t* green, const uint8_t* blue,
70 const uint8_t* alpha, const Restriction* restriction) {
71 #ifdef ANDROID_RENDERSCRIPT_TOOLKIT_VALIDATE
72 if (!validRestriction(LOG_TAG, sizeX, sizeY, restriction)) {
73 return;
74 }
75 #endif
76
77 LutTask task(input, output, sizeX, sizeY, red, green, blue, alpha, restriction);
78 processor->doTask(&task);
79 }
80
81 } // namespace renderscript
82 } // namespace android
83