| /* |
| * Copyright (C) 2014 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. |
| */ |
| |
| #include "ip.rsh" |
| #pragma rs_fp_relaxed |
| |
| rs_allocation inputImage; |
| |
| float intensityLow = 0.f; |
| float intensityHigh; |
| uchar4 color; |
| const static float3 mono = {0.299f, 0.587f, 0.114f}; |
| |
| void setParams(float intensHigh, float intensLow, uchar r, uchar g, uchar b) { |
| intensityLow = intensLow; |
| intensityHigh = intensHigh; |
| uchar4 hats = {r, g, b, 255}; |
| color = hats; |
| } |
| |
| uchar4 RS_KERNEL root(uchar4 v_in, uint32_t x, uint32_t y) { |
| uchar4 refpix = rsGetElementAt_uchar4(inputImage, x, y); |
| float pixelIntensity = dot(rsUnpackColor8888(refpix).rgb, mono); |
| if ((pixelIntensity <= intensityHigh) && (pixelIntensity >= intensityLow)) { |
| return color; |
| } else { |
| return v_in; |
| } |
| } |
| |
| |