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 Samsint32_t gWidth; 20572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsint32_t gHeight; 21572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsrs_allocation gIn; 22572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 23572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsfloat gCoeffs[9]; 24572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 25572a5031a5d8602db0bec0b253428a034bd4dd59Jason Samsuchar4 __attribute__((kernel)) root(uint32_t x, uint32_t y) { 26572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams uint32_t x1 = min((int32_t)x+1, gWidth-1); 27572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams uint32_t x2 = max((int32_t)x-1, 0); 28572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams uint32_t y1 = min((int32_t)y+1, gHeight-1); 29572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams uint32_t y2 = max((int32_t)y-1, 0); 30572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 31572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p00 = convert_float4(rsGetElementAt_uchar4(gIn, x1, y1)); 32572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p01 = convert_float4(rsGetElementAt_uchar4(gIn, x, y1)); 33572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p02 = convert_float4(rsGetElementAt_uchar4(gIn, x2, y1)); 34572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p10 = convert_float4(rsGetElementAt_uchar4(gIn, x1, y)); 35572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p11 = convert_float4(rsGetElementAt_uchar4(gIn, x, y)); 36572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p12 = convert_float4(rsGetElementAt_uchar4(gIn, x2, y)); 37572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p20 = convert_float4(rsGetElementAt_uchar4(gIn, x1, y2)); 38572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p21 = convert_float4(rsGetElementAt_uchar4(gIn, x, y2)); 39572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams float4 p22 = convert_float4(rsGetElementAt_uchar4(gIn, x2, y2)); 40572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p00 *= gCoeffs[0]; 41572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p01 *= gCoeffs[1]; 42572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p02 *= gCoeffs[2]; 43572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p10 *= gCoeffs[3]; 44572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p11 *= gCoeffs[4]; 45572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p12 *= gCoeffs[5]; 46572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p20 *= gCoeffs[6]; 47572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p21 *= gCoeffs[7]; 48572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p22 *= gCoeffs[8]; 49572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 50572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p00 += p01; 51572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p02 += p10; 52572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p11 += p12; 53572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p20 += p21; 54572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 55572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p22 += p00; 56572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p02 += p11; 57572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 58572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p20 += p22; 59572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p20 += p02; 60572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 61572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams p20 = clamp(p20, 0.f, 255.f); 62572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams return convert_uchar4(p20); 63572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams} 64572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 65572a5031a5d8602db0bec0b253428a034bd4dd59Jason Sams 66