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#include "ip.rsh" 18 19static float bright = 0.f; 20 21void setBright(float v) { 22 bright = 255.f / (255.f - v); 23} 24 25void exposure(const uchar4 *in, uchar4 *out) 26{ 27 out->r = rsClamp((int)(bright * in->r), 0, 255); 28 out->g = rsClamp((int)(bright * in->g), 0, 255); 29 out->b = rsClamp((int)(bright * in->b), 0, 255); 30} 31 32