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" 18572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 19572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float bright = 0.f; 20572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 21572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid setBright(float v) { 22572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams bright = 255.f / (255.f - v); 23572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 24572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 25572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid exposure(const uchar4 *in, uchar4 *out) 26572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams{ 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->r = rsClamp((int)(bright * in->r), 0, 255); 28572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->g = rsClamp((int)(bright * in->g), 0, 255); 29572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->b = rsClamp((int)(bright * in->b), 0, 255); 30572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 31572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 32