1 /* 2 * Copyright (C) 2014 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 #include "rs_core.rsh" 18 19 20 #define CVT_FUNC_2(typeout, typein) \ 21 extern typeout##2 __attribute__((const, overloadable)) \ 22 convert_##typeout##2(typein##2 i) { \ 23 return __builtin_convertvector(i, typeout##2); \ 24 } \ 25 extern typeout##3 __attribute__((const, overloadable)) \ 26 convert_##typeout##3(typein##3 i) { \ 27 return __builtin_convertvector(i, typeout##3); \ 28 } \ 29 extern typeout##4 __attribute__((const, overloadable)) \ 30 convert_##typeout##4(typein##4 i) { \ 31 return __builtin_convertvector(i, typeout##4); \ 32 } 33 #define CVT_FUNC(type) CVT_FUNC_2(type, uchar) \ 34 CVT_FUNC_2(type, char) \ 35 CVT_FUNC_2(type, ushort) \ 36 CVT_FUNC_2(type, short) \ 37 CVT_FUNC_2(type, uint) \ 38 CVT_FUNC_2(type, int) \ 39 CVT_FUNC_2(type, ulong) \ 40 CVT_FUNC_2(type, long) \ 41 CVT_FUNC_2(type, half) \ 42 CVT_FUNC_2(type, float) \ 43 CVT_FUNC_2(type, double) 44 45 CVT_FUNC(char) 46 CVT_FUNC(uchar) 47 CVT_FUNC(short) 48 CVT_FUNC(ushort) 49 CVT_FUNC(int) 50 CVT_FUNC(uint) 51 CVT_FUNC(long) 52 CVT_FUNC(ulong) 53 CVT_FUNC(half) 54 CVT_FUNC(float) 55 CVT_FUNC(double) 56 57 58 /* 59 * YUV float4 version 60 */ 61 62 static float4 yuv_U_values = {0.f, -0.392f * 0.003921569f, +2.02 * 0.003921569f, 0.f}; 63 static float4 yuv_V_values = {1.603f * 0.003921569f, -0.815f * 0.003921569f, 0.f, 0.f}; 64 65 extern float4 __attribute__((overloadable)) rsYuvToRGBA_float4(uchar y, uchar u, uchar v) { 66 float4 color = (float)y * 0.003921569f; 67 float4 fU = ((float)u) - 128.f; 68 float4 fV = ((float)v) - 128.f; 69 70 color += fU * yuv_U_values; 71 color += fV * yuv_V_values; 72 color = clamp(color, 0.f, 1.f); 73 return color; 74 } 75 76