1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma version(1) 18 #pragma rs java_package_name(com.android.gallery3d.filtershow.filters) 19 #pragma rs_fp_relaxed 20 21 int32_t gWidth; 22 int32_t gHeight; 23 const uchar4 *gPixels; 24 rs_allocation gIn; 25 26 float gCoeffs[9]; 27 28 void root(const uchar4 *in, uchar4 *out, const void *usrData, uint32_t x, uint32_t y) { 29 uint32_t x1 = min((int32_t)x+1, gWidth-1); 30 uint32_t x2 = max((int32_t)x-1, 0); 31 uint32_t y1 = min((int32_t)y+1, gHeight-1); 32 uint32_t y2 = max((int32_t)y-1, 0); 33 34 float4 p00 = rsUnpackColor8888(gPixels[x1 + gWidth * y1]); 35 float4 p01 = rsUnpackColor8888(gPixels[x + gWidth * y1]); 36 float4 p02 = rsUnpackColor8888(gPixels[x2 + gWidth * y1]); 37 float4 p10 = rsUnpackColor8888(gPixels[x1 + gWidth * y]); 38 float4 p11 = rsUnpackColor8888(gPixels[x + gWidth * y]); 39 float4 p12 = rsUnpackColor8888(gPixels[x2 + gWidth * y]); 40 float4 p20 = rsUnpackColor8888(gPixels[x1 + gWidth * y2]); 41 float4 p21 = rsUnpackColor8888(gPixels[x + gWidth * y2]); 42 float4 p22 = rsUnpackColor8888(gPixels[x2 + gWidth * y2]); 43 44 p00 *= gCoeffs[0]; 45 p01 *= gCoeffs[1]; 46 p02 *= gCoeffs[2]; 47 p10 *= gCoeffs[3]; 48 p11 *= gCoeffs[4]; 49 p12 *= gCoeffs[5]; 50 p20 *= gCoeffs[6]; 51 p21 *= gCoeffs[7]; 52 p22 *= gCoeffs[8]; 53 54 p00 += p01; 55 p02 += p10; 56 p11 += p12; 57 p20 += p21; 58 59 p22 += p00; 60 p02 += p11; 61 62 p20 += p22; 63 p20 += p02; 64 65 p20 = clamp(p20, 0.f, 1.f); 66 *out = rsPackColorTo8888(p20.r, p20.g, p20.b); 67 } 68
