123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams/* 223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Copyright (C) 2012 The Android Open Source Project 323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * you may not use this file except in compliance with the License. 623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * You may obtain a copy of the License at 723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 1023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Unless required by applicable law or agreed to in writing, software 1123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 1223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * See the License for the specific language governing permissions and 1423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * limitations under the License. 1523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams */ 1623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 1723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams#include "ip.rsh" 1823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams#pragma rs_fp_relaxed 1923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 2023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsint32_t gWidth; 2123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsint32_t gHeight; 2223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsrs_allocation gIn; 2323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 2423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsfloat gCoeffs[9]; 2523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 26025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL root(uint32_t x, uint32_t y) { 2723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams uint32_t x1 = min((int32_t)x+1, gWidth-1); 2823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams uint32_t x2 = max((int32_t)x-1, 0); 2923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams uint32_t y1 = min((int32_t)y+1, gHeight-1); 3023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams uint32_t y2 = max((int32_t)y-1, 0); 3123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 3223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float4 sum = convert_float4(rsGetElementAt_uchar4(gIn, x1, y1)) * gCoeffs[0]; 3323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y1)) * gCoeffs[1]; 3423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y1)) * gCoeffs[2]; 3523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x1, y)) * gCoeffs[3]; 3623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y)) * gCoeffs[4]; 3723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y)) * gCoeffs[5]; 3823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x1, y2)) * gCoeffs[6]; 3923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y2)) * gCoeffs[7]; 4023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y2)) * gCoeffs[8]; 4123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 4223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams sum = clamp(sum, 0.f, 255.f); 4323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams return convert_uchar4(sum); 4423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams} 4523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 4623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 47