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 Samsfloat vibrance = 0.f; 20572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 21572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Rf = 0.2999f; 22572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Gf = 0.587f; 23572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Bf = 0.114f; 24572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 25572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float S = 0.f; 26572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float MS = 0.f; 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float Rt = 0.f; 28572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float Gt = 0.f; 29572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float Bt = 0.f; 30572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float Vib = 0.f; 31572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 32572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid vibranceKernel(const uchar4 *in, uchar4 *out) { 33572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 34572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float R, G, B; 35572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 36572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams int r = in->r; 37572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams int g = in->g; 38572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams int b = in->b; 39572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float red = (r-max(g, b))/256.f; 40572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float sx = (float)(Vib/(1+native_exp(-red*3))); 41572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams S = sx+1; 42572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams MS = 1.0f - S; 43572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Rt = Rf * MS; 44572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Gt = Gf * MS; 45572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Bt = Bf * MS; 46572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams int t = (r + g) / 2; 47572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams R = r; 48572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams G = g; 49572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams B = b; 50572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 51572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Rc = R * (Rt + S) + G * Gt + B * Bt; 52572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Gc = R * Rt + G * (Gt + S) + B * Bt; 53572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Bc = R * Rt + G * Gt + B * (Bt + S); 54572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 55572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->r = rsClamp(Rc, 0, 255); 56572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->g = rsClamp(Gc, 0, 255); 57572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams out->b = rsClamp(Bc, 0, 255); 58572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 59572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 60572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 61572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid prepareVibrance() { 62572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 63572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Vib = vibrance/100.f; 64572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams S = Vib + 1; 65572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams MS = 1.0f - S; 66572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Rt = Rf * MS; 67572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Gt = Gf * MS; 68572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Bt = Bf * MS; 69572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 70572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 71