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"
186939f7bf32ab2765dcedb8a8d6fd352e7d08540fJason 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
26025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL exposure(uchar4 in)
27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams{
2836054c2cf96b889660939931da5d43bda7b99780Tim Murray    uchar4 out = {0, 0, 0, 255};
29c6261359d8910273f49edba9cd89b09000aa58f1Jason Sams    float3 t = convert_float3(in.rgb);
30c6261359d8910273f49edba9cd89b09000aa58f1Jason Sams    out.rgb = convert_uchar3(clamp(convert_int3(t * bright), 0, 255));
3136054c2cf96b889660939931da5d43bda7b99780Tim Murray    return out;
32572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams}
33572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams
34