1ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams/* 2ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * Copyright (C) 2012 The Android Open Source Project 3ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * 4ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 5ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * you may not use this file except in compliance with the License. 6ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * You may obtain a copy of the License at 7ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * 8ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 9ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * 10ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * Unless required by applicable law or agreed to in writing, software 11ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 12ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * See the License for the specific language governing permissions and 14ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams * limitations under the License. 15ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams */ 16ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 17ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams#include "ip.rsh" 18ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams#pragma rs_fp_relaxed 19ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 20ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Samsint32_t gWidth; 21ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Samsint32_t gHeight; 22ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Samsrs_allocation gIn; 23ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 24ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Samsfloat gCoeffs[9]; 25ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 26025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL root(uint32_t x, uint32_t y) { 27ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams uint32_t x1 = min((int32_t)x+1, gWidth-1); 28ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams uint32_t x2 = max((int32_t)x-1, 0); 29ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams uint32_t y1 = min((int32_t)y+1, gHeight-1); 30ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams uint32_t y2 = max((int32_t)y-1, 0); 31ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 32ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams float4 sum = convert_float4(rsGetElementAt_uchar4(gIn, x1, y1)) * gCoeffs[0]; 33ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y1)) * gCoeffs[1]; 34ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y1)) * gCoeffs[2]; 35ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x1, y)) * gCoeffs[3]; 36ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y)) * gCoeffs[4]; 37ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y)) * gCoeffs[5]; 38ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x1, y2)) * gCoeffs[6]; 39ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x, y2)) * gCoeffs[7]; 40ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum += convert_float4(rsGetElementAt_uchar4(gIn, x2, y2)) * gCoeffs[8]; 41ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 42ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams sum = clamp(sum, 0.f, 255.f); 43ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams return convert_uchar4(sum); 44ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams} 45ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 46ab84c3968abce348c212bc9d466c534bc2a03cd6Jason Sams 47