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#include "config.h"
/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <cstring>
#include "vector_vdrawhelper.h"
/*
result = s
dest = s * ca + d * cia
*/
static void color_Source(uint32_t *dest, int length, uint32_t color,
uint32_t alpha)
{
int ialpha, i;
if (alpha == 255) {
memfill32(dest, color, length);
} else {
ialpha = 255 - alpha;
color = BYTE_MUL(color, alpha);
for (i = 0; i < length; ++i)
dest[i] = color + BYTE_MUL(dest[i], ialpha);
}
}
/*
r = s + d * sia
dest = r * ca + d * cia
= (s + d * sia) * ca + d * cia
= s * ca + d * (sia * ca + cia)
= s * ca + d * (1 - sa*ca)
= s' + d ( 1 - s'a)
*/
static void color_SourceOver(uint32_t *dest, int length, uint32_t color,
uint32_t alpha)
{
int ialpha, i;
if (alpha != 255) color = BYTE_MUL(color, alpha);
ialpha = 255 - vAlpha(color);
for (i = 0; i < length; ++i) dest[i] = color + BYTE_MUL(dest[i], ialpha);
}
/*
result = d * sa
dest = d * sa * ca + d * cia
= d * (sa * ca + cia)
*/
static void color_DestinationIn(uint *dest, int length, uint color,
uint alpha)
{
uint a = vAlpha(color);
if (alpha != 255) {
a = BYTE_MUL(a, alpha) + 255 - alpha;
}
for (int i = 0; i < length; ++i) {
dest[i] = BYTE_MUL(dest[i], a);
}
}
/*
result = d * sia
dest = d * sia * ca + d * cia
= d * (sia * ca + cia)
*/
static void color_DestinationOut(uint *dest, int length, uint color,
uint alpha)
{
uint a = vAlpha(~color);
if (alpha != 255) a = BYTE_MUL(a, alpha) + 255 - alpha;
for (int i = 0; i < length; ++i) {
dest[i] = BYTE_MUL(dest[i], a);
}
}
static void src_Source(uint32_t *dest, int length, const uint32_t *src,
uint32_t alpha)
{
if (alpha == 255) {
memcpy(dest, src, size_t(length) * sizeof(uint));
} else {
uint ialpha = 255 - alpha;
for (int i = 0; i < length; ++i) {
dest[i] =
interpolate_pixel(src[i], alpha, dest[i], ialpha);
}
}
}
/* s' = s * ca
* d' = s' + d (1 - s'a)
*/
static void src_SourceOver(uint32_t *dest, int length, const uint32_t *src,
uint32_t alpha)
{
uint s, sia;
if (alpha == 255) {
for (int i = 0; i < length; ++i) {
s = src[i];
if (s >= 0xff000000)
dest[i] = s;
else if (s != 0) {
sia = vAlpha(~s);
dest[i] = s + BYTE_MUL(dest[i], sia);
}
}
} else {
/* source' = source * const_alpha
* dest = source' + dest ( 1- source'a)
*/
for (int i = 0; i < length; ++i) {
s = BYTE_MUL(src[i], alpha);
sia = vAlpha(~s);
dest[i] = s + BYTE_MUL(dest[i], sia);
}
}
}
static void src_DestinationIn(uint *dest, int length, const uint *src,
uint alpha)
{
if (alpha == 255) {
for (int i = 0; i < length; ++i) {
dest[i] = BYTE_MUL(dest[i], vAlpha(src[i]));
}
} else {
uint cia = 255 - alpha;
for (int i = 0; i < length; ++i) {
uint a = BYTE_MUL(vAlpha(src[i]), alpha) + cia;
dest[i] = BYTE_MUL(dest[i], a);
}
}
}
static void src_DestinationOut(uint *dest, int length, const uint *src,
uint alpha)
{
if (alpha == 255) {
for (int i = 0; i < length; ++i) {
dest[i] = BYTE_MUL(dest[i], vAlpha(~src[i]));
}
} else {
uint cia = 255 - alpha;
for (int i = 0; i < length; ++i) {
uint sia = BYTE_MUL(vAlpha(~src[i]), alpha) + cia;
dest[i] = BYTE_MUL(dest[i], sia);
}
}
}
RenderFuncTable::RenderFuncTable()
{
updateColor(BlendMode::Src, color_Source);
updateColor(BlendMode::SrcOver, color_SourceOver);
updateColor(BlendMode::DestIn, color_DestinationIn);
updateColor(BlendMode::DestOut, color_DestinationOut);
updateSrc(BlendMode::Src, src_Source);
updateSrc(BlendMode::SrcOver, src_SourceOver);
updateSrc(BlendMode::DestIn, src_DestinationIn);
updateSrc(BlendMode::DestOut, src_DestinationOut);
#if defined(USE_ARM_NEON)
neon();
#endif
#if defined(__SSE2__)
sse();
#endif
}
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