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 float inBlack; 18 float outBlack; 19 float inWMinInB; 20 float outWMinOutB; 21 float overInWMinInB; 22 rs_matrix3x3 colorMat; 23 24 uchar4 __attribute__((kernel)) root(uchar4 in) { 25 uchar4 out; 26 float3 pixel = convert_float4(in).rgb; 27 pixel = rsMatrixMultiply(&colorMat, pixel); 28 pixel = clamp(pixel, 0.f, 255.f); 29 pixel = (pixel - inBlack) * overInWMinInB; 30 pixel = pixel * outWMinOutB + outBlack; 31 pixel = clamp(pixel, 0.f, 255.f); 32 out.xyz = convert_uchar3(pixel); 33 out.w = 0xff; 34 return out; 35 } 36 37 uchar4 __attribute__((kernel)) root4(uchar4 in) { 38 float4 pixel = convert_float4(in); 39 pixel.rgb = rsMatrixMultiply(&colorMat, pixel.rgb); 40 pixel = clamp(pixel, 0.f, 255.f); 41 pixel = (pixel - inBlack) * overInWMinInB; 42 pixel = pixel * outWMinOutB + outBlack; 43 pixel = clamp(pixel, 0.f, 255.f); 44 return convert_uchar4(pixel); 45 } 46 47
