irrlicht/source/Irrlicht/CColorConverter.cpp

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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CColorConverter.h"
#include "IImage.h"
#include "os.h"
namespace irr
{
namespace video
{
//! converts a monochrome bitmap to A1R5G5B5 data
void CColorConverter::convert1BitTo16Bit(const u8* in, s16* out, u32 width, u32 height, u32 linepad, bool flip)
{
if (!in || !out)
return;
if (flip)
out += (size_t)width * height;
for (u32 y=0; y<height; ++y)
{
s32 shift = 7;
if (flip)
out -= width;
for (u32 x=0; x<width; ++x)
{
out[x] = *in>>shift & 0x01 ? (s16)0xffff : (s16)0x8000;
if ((--shift)<0) // 8 pixel done
{
shift=7;
++in;
}
}
if (shift != 7) // width did not fill last byte
++in;
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 4 bit palettized image to A1R5G5B5
void CColorConverter::convert4BitTo16Bit(const u8* in, s16* out, u32 width, u32 height, const s32* palette, u32 linepad, bool flip)
{
if (!in || !out || !palette)
return;
if (flip)
out += (size_t)width*height;
for (u32 y=0; y<height; ++y)
{
s32 shift = 4;
if (flip)
out -= width;
for (u32 x=0; x<width; ++x)
{
out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)((*in >> shift) & 0xf)]);
if (shift==0)
{
shift = 4;
++in;
}
else
shift = 0;
}
if (shift == 0) // odd width
++in;
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 8 bit palettized image into A1R5G5B5
void CColorConverter::convert8BitTo16Bit(const u8* in, s16* out, u32 width, u32 height, const s32* palette, u32 linepad, bool flip)
{
if (!in || !out || !palette)
return;
if (flip)
out += (size_t)width * height;
for (u32 y=0; y<height; ++y)
{
if (flip)
out -= width; // one line back
for (u32 x=0; x<width; ++x)
{
out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)(*in)]);
++in;
}
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
void CColorConverter::convert8BitTo24Bit(const u8* in, u8* out, u32 width, u32 height, const u8* palette, u32 linepad, bool flip)
{
if (!in || !out )
return;
const u32 lineWidth = 3 * width;
if (flip)
out += (size_t)lineWidth * height;
for (u32 y=0; y<height; ++y)
{
if (flip)
out -= lineWidth; // one line back
for (u32 x=0; x< lineWidth; x += 3)
{
if ( palette )
{
#ifdef __BIG_ENDIAN__
out[x+0] = palette[ (in[0] << 2 ) + 0];
out[x+1] = palette[ (in[0] << 2 ) + 1];
out[x+2] = palette[ (in[0] << 2 ) + 2];
#else
out[x+0] = palette[ (in[0] << 2 ) + 2];
out[x+1] = palette[ (in[0] << 2 ) + 1];
out[x+2] = palette[ (in[0] << 2 ) + 0];
#endif
}
else
{
out[x+0] = in[0];
out[x+1] = in[0];
out[x+2] = in[0];
}
++in;
}
if (!flip)
out += lineWidth;
in += linepad;
}
}
//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
void CColorConverter::convert8BitTo32Bit(const u8* in, u8* out, u32 width, u32 height, const u8* palette, u32 linepad, bool flip)
{
if (!in || !out )
return;
const u32 lineWidth = 4 * width;
if (flip)
out += (size_t)lineWidth * height;
u32 x;
u32 c;
for (u32 y=0; y < height; ++y)
{
if (flip)
out -= lineWidth; // one line back
if ( palette )
{
for (x=0; x < width; x += 1)
{
c = in[x];
((u32*)out)[x] = ((u32*)palette)[ c ];
}
}
else
{
for (x=0; x < width; x += 1)
{
c = in[x];
#ifdef __BIG_ENDIAN__
((u32*)out)[x] = c << 24 | c << 16 | c << 8 | 0x000000FF;
#else
((u32*)out)[x] = 0xFF000000 | c << 16 | c << 8 | c;
#endif
}
}
if (!flip)
out += lineWidth;
in += width + linepad;
}
}
//! converts 16bit data to 16bit data
void CColorConverter::convert16BitTo16Bit(const s16* in, s16* out, u32 width, u32 height, u32 linepad, bool flip)
{
if (!in || !out)
return;
if (flip)
out += (size_t)width * height;
for (u32 y=0; y<height; ++y)
{
if (flip)
out -= width;
#ifdef __BIG_ENDIAN__
for (u32 x=0; x<width; ++x)
out[x]=os::Byteswap::byteswap(in[x]);
#else
memcpy(out, in, width*sizeof(s16));
#endif
if (!flip)
out += width;
in += width;
in += linepad;
}
}
//! copies R8G8B8 24bit data to 24bit data
void CColorConverter::convert24BitTo24Bit(const u8* in, u8* out, u32 width, u32 height, u32 linepad, bool flip, bool bgr)
{
if (!in || !out)
return;
const u32 lineWidth = 3 * width;
if (flip)
out += (size_t)lineWidth * height;
for (u32 y=0; y<height; ++y)
{
if (flip)
out -= lineWidth;
if (bgr)
{
for (u32 x=0; x<lineWidth; x+=3)
{
out[x+0] = in[x+2];
out[x+1] = in[x+1];
out[x+2] = in[x+0];
}
}
else
{
memcpy(out,in,lineWidth);
}
if (!flip)
out += lineWidth;
in += lineWidth;
in += linepad;
}
}
//! Resizes the surface to a new size and converts it at the same time
//! to an A8R8G8B8 format, returning the pointer to the new buffer.
void CColorConverter::convert16bitToA8R8G8B8andResize(const s16* in, s32* out, u32 newWidth, u32 newHeight, u32 currentWidth, u32 currentHeight)
{
if (!newWidth || !newHeight)
return;
// note: this is very very slow. (i didn't want to write a fast version.
// but hopefully, nobody wants to convert surfaces every frame.
f32 sourceXStep = (f32)currentWidth / (f32)newWidth;
f32 sourceYStep = (f32)currentHeight / (f32)newHeight;
f32 sy;
s32 t;
for (u32 x=0; x<newWidth; ++x)
{
sy = 0.0f;
for (u32 y=0; y<newHeight; ++y)
{
t = in[(s32)(((s32)sy)*currentWidth + x*sourceXStep)];
t = (((t >> 15)&0x1)<<31) | (((t >> 10)&0x1F)<<19) |
(((t >> 5)&0x1F)<<11) | (t&0x1F)<<3;
out[(s32)(y*newWidth + x)] = t;
sy+=sourceYStep;
}
}
}
//! copies X8R8G8B8 32 bit data
void CColorConverter::convert32BitTo32Bit(const s32* in, s32* out, u32 width, u32 height, u32 linepad, bool flip)
{
if (!in || !out)
return;
if (flip)
out += (size_t)width * height;
for (u32 y=0; y<height; ++y)
{
if (flip)
out -= width;
#ifdef __BIG_ENDIAN__
for (u32 x=0; x<width; ++x)
out[x]=os::Byteswap::byteswap(in[x]);
#else
memcpy(out, in, width*sizeof(s32));
#endif
if (!flip)
out += width;
in += width;
in += linepad;
}
}
void CColorConverter::convert_A1R5G5B5toR8G8B8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u8 * dB = (u8 *)dP;
for (u32 x = 0; x < sN; ++x)
{
dB[2] = (*sB & 0x7c00) >> 7;
dB[1] = (*sB & 0x03e0) >> 2;
dB[0] = (*sB & 0x1f) << 3;
sB += 1;
dB += 3;
}
}
void CColorConverter::convert_A1R5G5B5toB8G8R8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u8 * dB = (u8 *)dP;
for (u32 x = 0; x < sN; ++x)
{
dB[0] = (*sB & 0x7c00) >> 7;
dB[1] = (*sB & 0x03e0) >> 2;
dB[2] = (*sB & 0x1f) << 3;
sB += 1;
dB += 3;
}
}
void CColorConverter::convert_A1R5G5B5toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u32* dB = (u32*)dP;
for (u32 x = 0; x < sN; ++x)
*dB++ = A1R5G5B5toA8R8G8B8(*sB++);
}
void CColorConverter::convert_A1R5G5B5toA1R5G5B5(const void* sP, u32 sN, void* dP)
{
memcpy(dP, sP, sN * 2);
}
void CColorConverter::convert_A1R5G5B5toR5G6B5(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
*dB++ = A1R5G5B5toR5G6B5(*sB++);
}
void CColorConverter::convert_A8R8G8B8toR8G8B8(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8*)sP;
u8* dB = (u8*)dP;
for (u32 x = 0; x < sN; ++x)
{
// sB[3] is alpha
dB[0] = sB[2];
dB[1] = sB[1];
dB[2] = sB[0];
sB += 4;
dB += 3;
}
}
void CColorConverter::convert_A8R8G8B8toB8G8R8(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8*)sP;
u8* dB = (u8*)dP;
for (u32 x = 0; x < sN; ++x)
{
// sB[3] is alpha
dB[0] = sB[0];
dB[1] = sB[1];
dB[2] = sB[2];
sB += 4;
dB += 3;
}
}
void CColorConverter::convert_A8R8G8B8toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
memcpy(dP, sP, sN * 4);
}
void CColorConverter::convert_A8R8G8B8toA1R5G5B5(const void* sP, u32 sN, void* dP)
{
u32* sB = (u32*)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
*dB++ = A8R8G8B8toA1R5G5B5(*sB++);
}
void CColorConverter::convert_A8R8G8B8toA1B5G5R5(const void* sP, u32 sN, void* dP)
{
u8 * sB = (u8 *)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
{
s32 r = sB[0] >> 3;
s32 g = sB[1] >> 3;
s32 b = sB[2] >> 3;
s32 a = sB[3] >> 3;
dB[0] = (a << 15) | (r << 10) | (g << 5) | (b);
sB += 4;
dB += 1;
}
}
void CColorConverter::convert_A8R8G8B8toR5G6B5(const void* sP, u32 sN, void* dP)
{
u8 * sB = (u8 *)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
{
s32 r = sB[2] >> 3;
s32 g = sB[1] >> 2;
s32 b = sB[0] >> 3;
dB[0] = (r << 11) | (g << 5) | (b);
sB += 4;
dB += 1;
}
}
void CColorConverter::convert_A8R8G8B8toR3G3B2(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8*)sP;
u8* dB = (u8*)dP;
for (u32 x = 0; x < sN; ++x)
{
u8 r = sB[2] & 0xe0;
u8 g = (sB[1] & 0xe0) >> 3;
u8 b = (sB[0] & 0xc0) >> 6;
dB[0] = (r | g | b);
sB += 4;
dB += 1;
}
}
void CColorConverter::convert_R8G8B8toR8G8B8(const void* sP, u32 sN, void* dP)
{
memcpy(dP, sP, sN * 3);
}
void CColorConverter::convert_R8G8B8toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8* )sP;
u32* dB = (u32*)dP;
for (u32 x = 0; x < sN; ++x)
{
*dB = 0xff000000 | (sB[0]<<16) | (sB[1]<<8) | sB[2];
sB += 3;
++dB;
}
}
void CColorConverter::convert_R8G8B8toA1R5G5B5(const void* sP, u32 sN, void* dP)
{
u8 * sB = (u8 *)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
{
s32 r = sB[0] >> 3;
s32 g = sB[1] >> 3;
s32 b = sB[2] >> 3;
dB[0] = (0x8000) | (r << 10) | (g << 5) | (b);
sB += 3;
dB += 1;
}
}
void CColorConverter::convert_B8G8R8toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8* )sP;
u32* dB = (u32*)dP;
for (u32 x = 0; x < sN; ++x)
{
*dB = 0xff000000 | (sB[2]<<16) | (sB[1]<<8) | sB[0];
sB += 3;
++dB;
}
}
void CColorConverter::convert_B8G8R8A8toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
u8* sB = (u8*)sP;
u8* dB = (u8*)dP;
for (u32 x = 0; x < sN; ++x)
{
dB[0] = sB[3];
dB[1] = sB[2];
dB[2] = sB[1];
dB[3] = sB[0];
sB += 4;
dB += 4;
}
}
void CColorConverter::convert_A8R8G8B8toA8B8G8R8(const void* sP, u32 sN, void* dP)
{
const u32* sB = (const u32*)sP;
u32* dB = (u32*)dP;
for (u32 x = 0; x < sN; ++x)
{
*dB++ = (*sB & 0xff00ff00) | ((*sB & 0x00ff0000) >> 16) | ((*sB & 0x000000ff) << 16);
++sB;
}
}
void CColorConverter::convert_R8G8B8toR5G6B5(const void* sP, u32 sN, void* dP)
{
u8 * sB = (u8 *)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
{
s32 r = sB[0] >> 3;
s32 g = sB[1] >> 2;
s32 b = sB[2] >> 3;
dB[0] = (r << 11) | (g << 5) | (b);
sB += 3;
dB += 1;
}
}
void CColorConverter::convert_R5G6B5toR5G6B5(const void* sP, u32 sN, void* dP)
{
memcpy(dP, sP, sN * 2);
}
void CColorConverter::convert_R5G6B5toR8G8B8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u8 * dB = (u8 *)dP;
for (u32 x = 0; x < sN; ++x)
{
dB[0] = (*sB & 0xf800) >> 8;
dB[1] = (*sB & 0x07e0) >> 3;
dB[2] = (*sB & 0x001f) << 3;
sB += 1;
dB += 3;
}
}
void CColorConverter::convert_R5G6B5toB8G8R8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u8 * dB = (u8 *)dP;
for (u32 x = 0; x < sN; ++x)
{
dB[2] = (*sB & 0xf800) >> 8;
dB[1] = (*sB & 0x07e0) >> 3;
dB[0] = (*sB & 0x001f) << 3;
sB += 1;
dB += 3;
}
}
void CColorConverter::convert_R5G6B5toA8R8G8B8(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u32* dB = (u32*)dP;
for (u32 x = 0; x < sN; ++x)
*dB++ = R5G6B5toA8R8G8B8(*sB++);
}
void CColorConverter::convert_R5G6B5toA1R5G5B5(const void* sP, u32 sN, void* dP)
{
u16* sB = (u16*)sP;
u16* dB = (u16*)dP;
for (u32 x = 0; x < sN; ++x)
*dB++ = R5G6B5toA1R5G5B5(*sB++);
}
bool CColorConverter::canConvertFormat(ECOLOR_FORMAT sourceFormat, ECOLOR_FORMAT destFormat)
{
switch (sourceFormat)
{
case ECF_A1R5G5B5:
switch (destFormat)
{
case ECF_A1R5G5B5:
case ECF_R5G6B5:
case ECF_A8R8G8B8:
case ECF_R8G8B8:
return true;
default:
break;
}
break;
case ECF_R5G6B5:
switch (destFormat)
{
case ECF_A1R5G5B5:
case ECF_R5G6B5:
case ECF_A8R8G8B8:
case ECF_R8G8B8:
return true;
default:
break;
}
break;
case ECF_A8R8G8B8:
switch (destFormat)
{
case ECF_A1R5G5B5:
case ECF_R5G6B5:
case ECF_A8R8G8B8:
case ECF_R8G8B8:
return true;
default:
break;
}
break;
case ECF_R8G8B8:
switch (destFormat)
{
case ECF_A1R5G5B5:
case ECF_R5G6B5:
case ECF_A8R8G8B8:
case ECF_R8G8B8:
return true;
default:
break;
}
break;
default:
break;
}
return false;
}
void CColorConverter::convert_viaFormat(const void* sP, ECOLOR_FORMAT sF, u32 sN,
void* dP, ECOLOR_FORMAT dF)
{
// please also update can_convert_viaFormat when adding new conversions
switch (sF)
{
case ECF_A1R5G5B5:
switch (dF)
{
case ECF_A1R5G5B5:
convert_A1R5G5B5toA1R5G5B5(sP, sN, dP);
break;
case ECF_R5G6B5:
convert_A1R5G5B5toR5G6B5(sP, sN, dP);
break;
case ECF_A8R8G8B8:
convert_A1R5G5B5toA8R8G8B8(sP, sN, dP);
break;
case ECF_R8G8B8:
convert_A1R5G5B5toR8G8B8(sP, sN, dP);
break;
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
os::Printer::log("CColorConverter::convert_viaFormat method doesn't support compressed images.", ELL_WARNING);
break;
#ifndef _DEBUG
default:
break;
#endif
}
break;
case ECF_R5G6B5:
switch (dF)
{
case ECF_A1R5G5B5:
convert_R5G6B5toA1R5G5B5(sP, sN, dP);
break;
case ECF_R5G6B5:
convert_R5G6B5toR5G6B5(sP, sN, dP);
break;
case ECF_A8R8G8B8:
convert_R5G6B5toA8R8G8B8(sP, sN, dP);
break;
case ECF_R8G8B8:
convert_R5G6B5toR8G8B8(sP, sN, dP);
break;
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
os::Printer::log("CColorConverter::convert_viaFormat method doesn't support compressed images.", ELL_WARNING);
break;
#ifndef _DEBUG
default:
break;
#endif
}
break;
case ECF_A8R8G8B8:
switch (dF)
{
case ECF_A1R5G5B5:
convert_A8R8G8B8toA1R5G5B5(sP, sN, dP);
break;
case ECF_R5G6B5:
convert_A8R8G8B8toR5G6B5(sP, sN, dP);
break;
case ECF_A8R8G8B8:
convert_A8R8G8B8toA8R8G8B8(sP, sN, dP);
break;
case ECF_R8G8B8:
convert_A8R8G8B8toR8G8B8(sP, sN, dP);
break;
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
os::Printer::log("CColorConverter::convert_viaFormat method doesn't support compressed images.", ELL_WARNING);
break;
#ifndef _DEBUG
default:
break;
#endif
}
break;
case ECF_R8G8B8:
switch (dF)
{
case ECF_A1R5G5B5:
convert_R8G8B8toA1R5G5B5(sP, sN, dP);
break;
case ECF_R5G6B5:
convert_R8G8B8toR5G6B5(sP, sN, dP);
break;
case ECF_A8R8G8B8:
convert_R8G8B8toA8R8G8B8(sP, sN, dP);
break;
case ECF_R8G8B8:
convert_R8G8B8toR8G8B8(sP, sN, dP);
break;
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
os::Printer::log("CColorConverter::convert_viaFormat method doesn't support compressed images.", ELL_WARNING);
break;
#ifndef _DEBUG
default:
break;
#endif
}
break;
IRR_CASE_IIMAGE_COMPRESSED_FORMAT
os::Printer::log("CColorConverter::convert_viaFormat method doesn't support compressed images.", ELL_WARNING);
break;
#ifndef _DEBUG
default:
break;
#endif
}
}
} // end namespace video
} // end namespace irr