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" 186a804605b99cab4ffa3cc55c691338fd4a5396eaJason 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 266a804605b99cab4ffa3cc55c691338fd4a5396eaJason Samsuchar4 RS_KERNEL exposure(uchar4 in) 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams{ 286a804605b99cab4ffa3cc55c691338fd4a5396eaJason Sams uchar4 out = 0; 296a804605b99cab4ffa3cc55c691338fd4a5396eaJason Sams out.r = rsClamp((int)(bright * in.r), 0, 255); 306a804605b99cab4ffa3cc55c691338fd4a5396eaJason Sams out.g = rsClamp((int)(bright * in.g), 0, 255); 316a804605b99cab4ffa3cc55c691338fd4a5396eaJason Sams out.b = rsClamp((int)(bright * in.b), 0, 255); 326a804605b99cab4ffa3cc55c691338fd4a5396eaJason Sams return out; 33572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 34572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 35