/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rs_core.rsh"
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#define CVT_FUNC_2(typeout, typein) \
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extern typeout##2 __attribute__((const, overloadable)) \
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convert_##typeout##2(typein##2 i) { \
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return __builtin_convertvector(i, typeout##2); \
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} \
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extern typeout##3 __attribute__((const, overloadable)) \
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convert_##typeout##3(typein##3 i) { \
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return __builtin_convertvector(i, typeout##3); \
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} \
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extern typeout##4 __attribute__((const, overloadable)) \
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convert_##typeout##4(typein##4 i) { \
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return __builtin_convertvector(i, typeout##4); \
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}
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#define CVT_FUNC(type) CVT_FUNC_2(type, uchar) \
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CVT_FUNC_2(type, char) \
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CVT_FUNC_2(type, ushort) \
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CVT_FUNC_2(type, short) \
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CVT_FUNC_2(type, uint) \
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CVT_FUNC_2(type, int) \
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CVT_FUNC_2(type, ulong) \
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CVT_FUNC_2(type, long) \
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CVT_FUNC_2(type, half) \
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CVT_FUNC_2(type, float) \
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CVT_FUNC_2(type, double)
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CVT_FUNC(char)
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CVT_FUNC(uchar)
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CVT_FUNC(short)
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CVT_FUNC(ushort)
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CVT_FUNC(int)
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CVT_FUNC(uint)
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CVT_FUNC(long)
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CVT_FUNC(ulong)
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CVT_FUNC(half)
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CVT_FUNC(float)
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CVT_FUNC(double)
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/*
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* YUV float4 version
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*/
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static float4 yuv_U_values = {0.f, -0.392f * 0.003921569f, +2.02 * 0.003921569f, 0.f};
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static float4 yuv_V_values = {1.603f * 0.003921569f, -0.815f * 0.003921569f, 0.f, 0.f};
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extern float4 __attribute__((overloadable)) rsYuvToRGBA_float4(uchar y, uchar u, uchar v) {
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float4 color = (float)y * 0.003921569f;
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float4 fU = ((float)u) - 128.f;
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float4 fV = ((float)v) - 128.f;
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color += fU * yuv_U_values;
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color += fV * yuv_V_values;
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color = clamp(color, 0.f, 1.f);
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return color;
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}
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