1ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams/* 2ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * Copyright (C) 2012 The Android Open Source Project 3ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * 4ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 5ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * you may not use this file except in compliance with the License. 6ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * You may obtain a copy of the License at 7ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * 8ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 9ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * 10ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * Unless required by applicable law or agreed to in writing, software 11ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 12ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * See the License for the specific language governing permissions and 14ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams * limitations under the License. 15ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams */ 16ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 17ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams#pragma version(1) 18ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams#pragma rs java_package_name(com.android.rs.image2) 19ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams#pragma rs_fp_relaxed 20ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 21ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Samsint32_t gWidth; 22ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Samsint32_t gHeight; 23ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Samsrs_allocation gIn; 24ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 25ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Samsfloat gCoeffs[9]; 26ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 27ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Samsvoid root(uchar4 *out, uint32_t x, uint32_t y) { 28ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams uint32_t x1 = min((int32_t)x+1, gWidth); 29ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams uint32_t x2 = max((int32_t)x-1, 0); 30ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams uint32_t y1 = min((int32_t)y+1, gHeight); 31ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams uint32_t y2 = max((int32_t)y-1, 0); 32ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 33ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p00 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x1, y1))[0]); 34ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p01 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x, y1))[0]); 35ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p02 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x2, y1))[0]); 36ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p10 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x1, y))[0]); 37ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p11 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x, y))[0]); 38ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p12 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x2, y))[0]); 39ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p20 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x1, y2))[0]); 40ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p21 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x, y2))[0]); 41ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams float4 p22 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x2, y2))[0]); 42ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p00 *= gCoeffs[0]; 43ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p01 *= gCoeffs[1]; 44ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p02 *= gCoeffs[2]; 45ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p10 *= gCoeffs[3]; 46ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p11 *= gCoeffs[4]; 47ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p12 *= gCoeffs[5]; 48ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p20 *= gCoeffs[6]; 49ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p21 *= gCoeffs[7]; 50ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p22 *= gCoeffs[8]; 51ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 52ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p00 += p01; 53ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p02 += p10; 54ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p11 += p12; 55ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p20 += p21; 56ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 57ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p22 += p00; 58ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p02 += p11; 59ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 60ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p20 += p22; 61ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p20 += p02; 62ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 63ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams p20 = clamp(p20, 0.f, 255.f); 64ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams *out = convert_uchar4(p20); 65ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams} 66ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 67ebefb2c3d8efda845e5e9a9eba66e0a341b4db82Jason Sams 68