1572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams/* 2572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * Copyright (C) 2012 The Android Open Source Project 3572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * 4572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 5572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * you may not use this file except in compliance with the License. 6572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * You may obtain a copy of the License at 7572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * 8572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 9572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * 10572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * Unless required by applicable law or agreed to in writing, software 11572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 12572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * See the License for the specific language governing permissions and 14572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams * limitations under the License. 15572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams */ 16572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 17572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams#include "ip.rsh" 186939f7bf32ab2765dcedb8a8d6fd352e7d08540fJason Sams#pragma rs_fp_relaxed 19572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 20572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float bright = 0.f; 21572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 22572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid setBright(float v) { 23572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams bright = 255.f / (255.f - v); 24572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 25572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 2636054c2cf96b889660939931da5d43bda7b99780Tim Murrayuchar4 __attribute__((kernel)) exposure(uchar4 in) 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams{ 2836054c2cf96b889660939931da5d43bda7b99780Tim Murray uchar4 out = {0, 0, 0, 255}; 29c6261359d8910273f49edba9cd89b09000aa58f1Jason Sams float3 t = convert_float3(in.rgb); 30c6261359d8910273f49edba9cd89b09000aa58f1Jason Sams out.rgb = convert_uchar3(clamp(convert_int3(t * bright), 0, 255)); 3136054c2cf96b889660939931da5d43bda7b99780Tim Murray return out; 32572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 33572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 34