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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-lib
* Created on: 10 окт. 2020 г.
*
* lsp-dsp-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-dsp-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_DSP_ARCH_GENERIC_GRAPHICS_PIXELFMT_H_
#define PRIVATE_DSP_ARCH_GENERIC_GRAPHICS_PIXELFMT_H_
#ifndef PRIVATE_DSP_ARCH_GENERIC_IMPL
#error "This header should not be included directly"
#endif /* PRIVATE_DSP_ARCH_GENERIC_IMPL */
namespace lsp
{
namespace generic
{
void rgba32_to_bgra32(void *dst, const void *src, size_t count)
{
const uint32_t *s = reinterpret_cast<const uint32_t *>(src);
uint32_t *d = reinterpret_cast<uint32_t *>(dst);
for (size_t i=0; i<count; ++i)
{
uint32_t c = s[i];
d[i] = ((c&0xff0000) >> 16) | ((c&0xff)<<16) | (c&0xff00ff00);
}
}
void abgr32_to_bgra32(void *dst, const void *src, size_t count)
{
const uint32_t *s = reinterpret_cast<const uint32_t *>(src);
uint32_t *d = reinterpret_cast<uint32_t *>(dst);
for (size_t i=0; i<count; ++i)
{
uint32_t c = s[i];
d[i] = (c << 24) | (c >> 8);
}
}
#ifdef ARCH_LE
void abgr32_to_bgrff32(void *dst, const void *src, size_t count)
{
const uint32_t *s = reinterpret_cast<const uint32_t *>(src);
uint32_t *d = reinterpret_cast<uint32_t *>(dst);
for (size_t i=0; i<count; ++i)
{
uint32_t c = s[i];
d[i] = 0xff000000 | (c >> 8);
}
}
#else /* ARCH_BE */
void abgr32_to_bgrff32(void *dst, const void *src, size_t count)
{
const uint32_t *s = reinterpret_cast<const uint32_t *>(src);
uint32_t *d = reinterpret_cast<uint32_t *>(dst);
for (size_t i=0; i<count; ++i)
{
uint32_t c = s[i];
d[i] = 0x000000ff | (c << 8);
}
}
#endif
void rgba32_to_bgra32_ra(void *dst, const void *src, size_t count)
{
const uint8_t *s = reinterpret_cast<const uint8_t *>(src);
uint8_t *d = reinterpret_cast<uint8_t *>(dst);
uint32_t r, g, b, a, k;
for (size_t i=0; i<count; ++i)
{
a = 0xff - s[3];
k = 0x10101 * d[3]; // k = (0x1000000 * a) / 0xff
r = (s[0] * k) >> 24;
g = (s[1] * k) >> 24;
b = (s[2] * k) >> 24;
d[0] = uint8_t(b);
d[1] = uint8_t(g);
d[2] = uint8_t(r);
d[3] = uint8_t(a);
s += 4;
d += 4;
}
}
void rgba_to_bgra32(void *dst, const float *src, size_t count)
{
uint8_t *p = reinterpret_cast<uint8_t *>(dst);
for (; count > 0; count--, p += 4, src +=4 )
{
float A = 255.0f - src[3] * 255.0f;
float R = src[0] * A;
float G = src[1] * A;
float B = src[2] * A;
// Saturate
if (A < 0.0f)
A = 0.0f;
else if (A > 255.0f)
A = 255.0f;
if (R < 0.0f)
R = 0.0f;
else if (R > 255.0f)
R = 255.0f;
if (G < 0.0f)
G = 0.0f;
else if (G > 255.0f)
G = 255.0f;
if (B < 0.0f)
B = 0.0f;
else if (B > 255.0f)
B = 255.0f;
// Store result
p[0] = B;
p[1] = G;
p[2] = R;
p[3] = A;
}
}
constexpr uint32_t pabc_mask32 = __IF_LEBE( 0x00ffffffU, 0xffffff00U );
constexpr uint64_t pabc_mask64 = __IF_LEBE( 0x00ffffff00ffffffULL, 0xffffff00ffffff00ULL );
void pabc32_set_alpha(void *dst, const void *src, uint8_t alpha, size_t count)
{
uint32_t value32 = __IF_LEBE(uint32_t(alpha) << 24, uint32_t(alpha));
#ifdef ARCH_64BIT
uint64_t value64 = (uint64_t(value32) << 32) | value32;
uint64_t *pdst64 = static_cast<uint64_t *>(dst);
const uint64_t *psrc64 = static_cast<const uint64_t *>(src);
// 8x loop
for ( ; count >= 8; count -= 8)
{
uint64_t a = psrc64[0];
uint64_t b = psrc64[1];
uint64_t c = psrc64[2];
uint64_t d = psrc64[3];
a = (a & pabc_mask64) | value64;
b = (b & pabc_mask64) | value64;
c = (c & pabc_mask64) | value64;
d = (d & pabc_mask64) | value64;
pdst64[0] = a;
pdst64[1] = b;
pdst64[2] = c;
pdst64[3] = d;
psrc64 += 4;
pdst64 += 4;
}
uint32_t *pdst = reinterpret_cast<uint32_t *>(pdst64);
const uint32_t *psrc = reinterpret_cast<const uint32_t *>(psrc64);
// 4x loop
if (count >= 4)
{
uint32_t a = psrc[0];
uint32_t b = psrc[1];
uint32_t c = psrc[2];
uint32_t d = psrc[3];
a = (a & pabc_mask32) | value32;
b = (b & pabc_mask32) | value32;
c = (c & pabc_mask32) | value32;
d = (d & pabc_mask32) | value32;
pdst[0] = a;
pdst[1] = b;
pdst[2] = c;
pdst[3] = d;
psrc += 4;
pdst += 4;
count -= 4;
}
#else
uint32_t *pdst = static_cast<uint32_t *>(dst);
const uint32_t *psrc = static_cast<const uint32_t *>(src);
// 4x loop
for ( ; count >= 4; count -= 4)
{
uint32_t a = psrc[0];
uint32_t b = psrc[1];
uint32_t c = psrc[2];
uint32_t d = psrc[3];
a = (a & pabc_mask32) | value32;
b = (b & pabc_mask32) | value32;
c = (c & pabc_mask32) | value32;
d = (d & pabc_mask32) | value32;
pdst[0] = a;
pdst[1] = b;
pdst[2] = c;
pdst[3] = d;
psrc += 4;
pdst += 4;
}
#endif /* ARCH_64_BIT */
// 2x loop
if (count >= 2)
{
uint32_t a = psrc[0];
uint32_t b = psrc[1];
a = (a & pabc_mask32) | value32;
b = (b & pabc_mask32) | value32;
pdst[0] = a;
pdst[1] = b;
psrc += 2;
pdst += 2;
count -= 2;
}
if (count)
pdst[0] = (psrc[0] & pabc_mask32) | value32;
}
} /* namespace generic */
} /* namespace lsp */
#endif /* PRIVATE_DSP_ARCH_GENERIC_GRAPHICS_PIXELFMT_H_ */
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