1 /* 2 * Copyright (C) 2014 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 "ip.rsh" 18 #pragma rs_fp_relaxed 19 20 rs_allocation inputImage; 21 22 float intensityLow = 0.f; 23 float intensityHigh; 24 uchar4 color; 25 const static float3 mono = {0.299f, 0.587f, 0.114f}; 26 27 void setParams(float intensHigh, float intensLow, uchar r, uchar g, uchar b) { 28 intensityLow = intensLow; 29 intensityHigh = intensHigh; 30 uchar4 hats = {r, g, b, 255}; 31 color = hats; 32 } 33 34 uchar4 RS_KERNEL root(uchar4 v_in, uint32_t x, uint32_t y) { 35 uchar4 refpix = rsGetElementAt_uchar4(inputImage, x, y); 36 float pixelIntensity = dot(rsUnpackColor8888(refpix).rgb, mono); 37 if ((pixelIntensity <= intensityHigh) && (pixelIntensity >= intensityLow)) { 38 return color; 39 } else { 40 return v_in; 41 } 42 } 43 44 45
