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" 18dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams#pragma rs_fp_relaxed 19572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 20572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsfloat vibrance = 0.f; 21572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 22572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Rf = 0.2999f; 23572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Gf = 0.587f; 24572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic const float Bf = 0.114f; 25572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 26572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsstatic float Vib = 0.f; 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 28025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL vibranceKernel(uchar4 in) { 29ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams int r = in.r; 30ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams int g = in.g; 31ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams int b = in.b; 32dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float red = (r-max(g, b)) * (1.f / 256.f); 33dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float S = (float)(Vib/(1+native_exp(-red*3)))+1; 34dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float MS = 1.0f - S; 35dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float Rt = Rf * MS; 36dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float Gt = Gf * MS; 37dc08c6d13a68aa8fd35ce5922c1c98b915f35f08Jason Sams float Bt = Bf * MS; 38ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 39ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams float R = r; 40ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams float G = g; 41ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams float B = b; 42572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 43572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Rc = R * (Rt + S) + G * Gt + B * Bt; 44572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Gc = R * Rt + G * (Gt + S) + B * Bt; 45572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float Bc = R * Rt + G * Gt + B * (Bt + S); 46572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 47ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams uchar4 o; 482089cddba3e6e6bb7643ed670ee038dce0b8db6eJean-Luc Brouillet o.r = clamp((int) Rc, 0, 255); 492089cddba3e6e6bb7643ed670ee038dce0b8db6eJean-Luc Brouillet o.g = clamp((int) Gc, 0, 255); 502089cddba3e6e6bb7643ed670ee038dce0b8db6eJean-Luc Brouillet o.b = clamp((int) Bc, 0, 255); 51ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams o.a = 0xff; 52ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams return o; 53572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 54572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 55572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsvoid prepareVibrance() { 56572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams Vib = vibrance/100.f; 57572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 58