mirror of
https://github.com/minetest/irrlicht.git
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f1a3995965
Unlikely we ever support conversions with compressed image format. Define is a bit ugly I guess, but nicest way I could think off. Can probably be used in some image writers as well, have to check which support/don't support compressed formats first. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6042 dfc29bdd-3216-0410-991c-e03cc46cb475
814 lines
16 KiB
C++
814 lines
16 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CColorConverter.h"
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#include "SColor.h"
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#include "os.h"
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#include "irrString.h"
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namespace irr
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{
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namespace video
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{
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//! converts a monochrome bitmap to A1R5G5B5 data
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void CColorConverter::convert1BitTo16Bit(const u8* in, s16* out, s32 width, s32 height, s32 linepad, bool flip)
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{
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if (!in || !out)
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return;
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if (flip)
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out += width * height;
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for (s32 y=0; y<height; ++y)
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{
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s32 shift = 7;
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if (flip)
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out -= width;
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for (s32 x=0; x<width; ++x)
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{
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out[x] = *in>>shift & 0x01 ? (s16)0xffff : (s16)0x8000;
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if ((--shift)<0) // 8 pixel done
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{
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shift=7;
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++in;
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}
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}
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if (shift != 7) // width did not fill last byte
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++in;
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if (!flip)
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out += width;
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in += linepad;
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}
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}
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//! converts a 4 bit palettized image to A1R5G5B5
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void CColorConverter::convert4BitTo16Bit(const u8* in, s16* out, s32 width, s32 height, const s32* palette, s32 linepad, bool flip)
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{
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if (!in || !out || !palette)
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return;
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if (flip)
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out += width*height;
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for (s32 y=0; y<height; ++y)
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{
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s32 shift = 4;
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if (flip)
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out -= width;
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for (s32 x=0; x<width; ++x)
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{
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out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)((*in >> shift) & 0xf)]);
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if (shift==0)
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{
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shift = 4;
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++in;
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}
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else
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shift = 0;
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}
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if (shift == 0) // odd width
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++in;
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if (!flip)
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out += width;
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in += linepad;
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}
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}
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//! converts a 8 bit palettized image into A1R5G5B5
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void CColorConverter::convert8BitTo16Bit(const u8* in, s16* out, s32 width, s32 height, const s32* palette, s32 linepad, bool flip)
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{
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if (!in || !out || !palette)
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return;
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if (flip)
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out += width * height;
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for (s32 y=0; y<height; ++y)
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{
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if (flip)
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out -= width; // one line back
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for (s32 x=0; x<width; ++x)
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{
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out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)(*in)]);
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++in;
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}
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if (!flip)
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out += width;
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in += linepad;
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}
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}
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//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
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void CColorConverter::convert8BitTo24Bit(const u8* in, u8* out, s32 width, s32 height, const u8* palette, s32 linepad, bool flip)
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{
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if (!in || !out )
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return;
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const s32 lineWidth = 3 * width;
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if (flip)
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out += lineWidth * height;
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for (s32 y=0; y<height; ++y)
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{
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if (flip)
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out -= lineWidth; // one line back
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for (s32 x=0; x< lineWidth; x += 3)
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{
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if ( palette )
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{
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#ifdef __BIG_ENDIAN__
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out[x+0] = palette[ (in[0] << 2 ) + 0];
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out[x+1] = palette[ (in[0] << 2 ) + 1];
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out[x+2] = palette[ (in[0] << 2 ) + 2];
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#else
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out[x+0] = palette[ (in[0] << 2 ) + 2];
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out[x+1] = palette[ (in[0] << 2 ) + 1];
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out[x+2] = palette[ (in[0] << 2 ) + 0];
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#endif
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}
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else
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{
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out[x+0] = in[0];
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out[x+1] = in[0];
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out[x+2] = in[0];
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}
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++in;
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}
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if (!flip)
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out += lineWidth;
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in += linepad;
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}
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}
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//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
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void CColorConverter::convert8BitTo32Bit(const u8* in, u8* out, s32 width, s32 height, const u8* palette, s32 linepad, bool flip)
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{
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if (!in || !out )
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return;
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const u32 lineWidth = 4 * width;
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if (flip)
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out += lineWidth * height;
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u32 x;
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u32 c;
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for (u32 y=0; y < (u32) height; ++y)
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{
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if (flip)
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out -= lineWidth; // one line back
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if ( palette )
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{
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for (x=0; x < (u32) width; x += 1)
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{
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c = in[x];
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((u32*)out)[x] = ((u32*)palette)[ c ];
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}
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}
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else
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{
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for (x=0; x < (u32) width; x += 1)
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{
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c = in[x];
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#ifdef __BIG_ENDIAN__
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((u32*)out)[x] = c << 24 | c << 16 | c << 8 | 0x000000FF;
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#else
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((u32*)out)[x] = 0xFF000000 | c << 16 | c << 8 | c;
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#endif
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}
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}
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if (!flip)
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out += lineWidth;
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in += width + linepad;
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}
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}
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//! converts 16bit data to 16bit data
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void CColorConverter::convert16BitTo16Bit(const s16* in, s16* out, s32 width, s32 height, s32 linepad, bool flip)
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{
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if (!in || !out)
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return;
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if (flip)
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out += width * height;
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for (s32 y=0; y<height; ++y)
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{
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if (flip)
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out -= width;
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#ifdef __BIG_ENDIAN__
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for (s32 x=0; x<width; ++x)
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out[x]=os::Byteswap::byteswap(in[x]);
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#else
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memcpy(out, in, width*sizeof(s16));
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#endif
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if (!flip)
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out += width;
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in += width;
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in += linepad;
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}
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}
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//! copies R8G8B8 24bit data to 24bit data
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void CColorConverter::convert24BitTo24Bit(const u8* in, u8* out, s32 width, s32 height, s32 linepad, bool flip, bool bgr)
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{
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if (!in || !out)
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return;
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const s32 lineWidth = 3 * width;
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if (flip)
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out += lineWidth * height;
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for (s32 y=0; y<height; ++y)
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{
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if (flip)
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out -= lineWidth;
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if (bgr)
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{
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for (s32 x=0; x<lineWidth; x+=3)
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{
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out[x+0] = in[x+2];
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out[x+1] = in[x+1];
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out[x+2] = in[x+0];
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}
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}
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else
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{
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memcpy(out,in,lineWidth);
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}
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if (!flip)
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out += lineWidth;
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in += lineWidth;
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in += linepad;
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}
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}
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//! Resizes the surface to a new size and converts it at the same time
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//! to an A8R8G8B8 format, returning the pointer to the new buffer.
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void CColorConverter::convert16bitToA8R8G8B8andResize(const s16* in, s32* out, s32 newWidth, s32 newHeight, s32 currentWidth, s32 currentHeight)
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{
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if (!newWidth || !newHeight)
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return;
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// note: this is very very slow. (i didn't want to write a fast version.
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// but hopefully, nobody wants to convert surfaces every frame.
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f32 sourceXStep = (f32)currentWidth / (f32)newWidth;
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f32 sourceYStep = (f32)currentHeight / (f32)newHeight;
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f32 sy;
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s32 t;
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for (s32 x=0; x<newWidth; ++x)
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{
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sy = 0.0f;
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for (s32 y=0; y<newHeight; ++y)
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{
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t = in[(s32)(((s32)sy)*currentWidth + x*sourceXStep)];
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t = (((t >> 15)&0x1)<<31) | (((t >> 10)&0x1F)<<19) |
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(((t >> 5)&0x1F)<<11) | (t&0x1F)<<3;
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out[(s32)(y*newWidth + x)] = t;
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sy+=sourceYStep;
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}
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}
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}
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//! copies X8R8G8B8 32 bit data
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void CColorConverter::convert32BitTo32Bit(const s32* in, s32* out, s32 width, s32 height, s32 linepad, bool flip)
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{
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if (!in || !out)
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return;
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if (flip)
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out += width * height;
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for (s32 y=0; y<height; ++y)
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{
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if (flip)
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out -= width;
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#ifdef __BIG_ENDIAN__
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for (s32 x=0; x<width; ++x)
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out[x]=os::Byteswap::byteswap(in[x]);
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#else
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memcpy(out, in, width*sizeof(s32));
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#endif
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if (!flip)
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out += width;
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in += width;
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in += linepad;
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}
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}
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void CColorConverter::convert_A1R5G5B5toR8G8B8(const void* sP, s32 sN, void* dP)
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{
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u16* sB = (u16*)sP;
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u8 * dB = (u8 *)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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dB[2] = (*sB & 0x7c00) >> 7;
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dB[1] = (*sB & 0x03e0) >> 2;
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dB[0] = (*sB & 0x1f) << 3;
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sB += 1;
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dB += 3;
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}
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}
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void CColorConverter::convert_A1R5G5B5toB8G8R8(const void* sP, s32 sN, void* dP)
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{
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u16* sB = (u16*)sP;
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u8 * dB = (u8 *)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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dB[0] = (*sB & 0x7c00) >> 7;
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dB[1] = (*sB & 0x03e0) >> 2;
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dB[2] = (*sB & 0x1f) << 3;
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sB += 1;
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dB += 3;
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}
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}
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void CColorConverter::convert_A1R5G5B5toA8R8G8B8(const void* sP, s32 sN, void* dP)
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{
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u16* sB = (u16*)sP;
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u32* dB = (u32*)dP;
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for (s32 x = 0; x < sN; ++x)
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*dB++ = A1R5G5B5toA8R8G8B8(*sB++);
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}
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void CColorConverter::convert_A1R5G5B5toA1R5G5B5(const void* sP, s32 sN, void* dP)
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{
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memcpy(dP, sP, sN * 2);
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}
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void CColorConverter::convert_A1R5G5B5toR5G6B5(const void* sP, s32 sN, void* dP)
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{
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u16* sB = (u16*)sP;
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u16* dB = (u16*)dP;
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for (s32 x = 0; x < sN; ++x)
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*dB++ = A1R5G5B5toR5G6B5(*sB++);
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}
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void CColorConverter::convert_A8R8G8B8toR8G8B8(const void* sP, s32 sN, void* dP)
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{
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u8* sB = (u8*)sP;
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u8* dB = (u8*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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// sB[3] is alpha
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dB[0] = sB[2];
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dB[1] = sB[1];
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dB[2] = sB[0];
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sB += 4;
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dB += 3;
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}
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}
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void CColorConverter::convert_A8R8G8B8toB8G8R8(const void* sP, s32 sN, void* dP)
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{
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u8* sB = (u8*)sP;
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u8* dB = (u8*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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// sB[3] is alpha
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dB[0] = sB[0];
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dB[1] = sB[1];
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dB[2] = sB[2];
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sB += 4;
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dB += 3;
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}
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}
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void CColorConverter::convert_A8R8G8B8toA8R8G8B8(const void* sP, s32 sN, void* dP)
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{
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memcpy(dP, sP, sN * 4);
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}
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void CColorConverter::convert_A8R8G8B8toA1R5G5B5(const void* sP, s32 sN, void* dP)
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{
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u32* sB = (u32*)sP;
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u16* dB = (u16*)dP;
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for (s32 x = 0; x < sN; ++x)
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*dB++ = A8R8G8B8toA1R5G5B5(*sB++);
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}
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void CColorConverter::convert_A8R8G8B8toA1B5G5R5(const void* sP, s32 sN, void* dP)
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{
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u8 * sB = (u8 *)sP;
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u16* dB = (u16*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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s32 r = sB[0] >> 3;
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s32 g = sB[1] >> 3;
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s32 b = sB[2] >> 3;
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s32 a = sB[3] >> 3;
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dB[0] = (a << 15) | (r << 10) | (g << 5) | (b);
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sB += 4;
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dB += 1;
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}
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}
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void CColorConverter::convert_A8R8G8B8toR5G6B5(const void* sP, s32 sN, void* dP)
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{
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u8 * sB = (u8 *)sP;
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u16* dB = (u16*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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s32 r = sB[2] >> 3;
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s32 g = sB[1] >> 2;
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s32 b = sB[0] >> 3;
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dB[0] = (r << 11) | (g << 5) | (b);
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sB += 4;
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dB += 1;
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}
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}
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void CColorConverter::convert_A8R8G8B8toR3G3B2(const void* sP, s32 sN, void* dP)
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{
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u8* sB = (u8*)sP;
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u8* dB = (u8*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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u8 r = sB[2] & 0xe0;
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u8 g = (sB[1] & 0xe0) >> 3;
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u8 b = (sB[0] & 0xc0) >> 6;
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dB[0] = (r | g | b);
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sB += 4;
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dB += 1;
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}
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}
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void CColorConverter::convert_R8G8B8toR8G8B8(const void* sP, s32 sN, void* dP)
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{
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memcpy(dP, sP, sN * 3);
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}
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void CColorConverter::convert_R8G8B8toA8R8G8B8(const void* sP, s32 sN, void* dP)
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{
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u8* sB = (u8* )sP;
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u32* dB = (u32*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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*dB = 0xff000000 | (sB[0]<<16) | (sB[1]<<8) | sB[2];
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sB += 3;
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++dB;
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}
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}
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void CColorConverter::convert_R8G8B8toA1R5G5B5(const void* sP, s32 sN, void* dP)
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{
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u8 * sB = (u8 *)sP;
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u16* dB = (u16*)dP;
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for (s32 x = 0; x < sN; ++x)
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{
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s32 r = sB[0] >> 3;
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s32 g = sB[1] >> 3;
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s32 b = sB[2] >> 3;
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dB[0] = (0x8000) | (r << 10) | (g << 5) | (b);
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sB += 3;
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dB += 1;
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}
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}
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void CColorConverter::convert_B8G8R8toA8R8G8B8(const void* sP, s32 sN, void* dP)
|
|
{
|
|
u8* sB = (u8* )sP;
|
|
u32* dB = (u32*)dP;
|
|
|
|
for (s32 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, s32 sN, void* dP)
|
|
{
|
|
u8* sB = (u8*)sP;
|
|
u8* dB = (u8*)dP;
|
|
|
|
for (s32 x = 0; x < sN; ++x)
|
|
{
|
|
dB[0] = sB[3];
|
|
dB[1] = sB[2];
|
|
dB[2] = sB[1];
|
|
dB[3] = sB[0];
|
|
|
|
sB += 4;
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|
dB += 4;
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|
}
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|
|
|
}
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|
|
|
void CColorConverter::convert_A8R8G8B8toA8B8G8R8(const void* sP, s32 sN, void* dP)
|
|
{
|
|
const u32* sB = (const u32*)sP;
|
|
u32* dB = (u32*)dP;
|
|
|
|
for (s32 x = 0; x < sN; ++x)
|
|
{
|
|
*dB++ = (*sB & 0xff00ff00) | ((*sB & 0x00ff0000) >> 16) | ((*sB & 0x000000ff) << 16);
|
|
++sB;
|
|
}
|
|
}
|
|
|
|
void CColorConverter::convert_R8G8B8toR5G6B5(const void* sP, s32 sN, void* dP)
|
|
{
|
|
u8 * sB = (u8 *)sP;
|
|
u16* dB = (u16*)dP;
|
|
|
|
for (s32 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, s32 sN, void* dP)
|
|
{
|
|
memcpy(dP, sP, sN * 2);
|
|
}
|
|
|
|
void CColorConverter::convert_R5G6B5toR8G8B8(const void* sP, s32 sN, void* dP)
|
|
{
|
|
u16* sB = (u16*)sP;
|
|
u8 * dB = (u8 *)dP;
|
|
|
|
for (s32 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, s32 sN, void* dP)
|
|
{
|
|
u16* sB = (u16*)sP;
|
|
u8 * dB = (u8 *)dP;
|
|
|
|
for (s32 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, s32 sN, void* dP)
|
|
{
|
|
u16* sB = (u16*)sP;
|
|
u32* dB = (u32*)dP;
|
|
|
|
for (s32 x = 0; x < sN; ++x)
|
|
*dB++ = R5G6B5toA8R8G8B8(*sB++);
|
|
}
|
|
|
|
void CColorConverter::convert_R5G6B5toA1R5G5B5(const void* sP, s32 sN, void* dP)
|
|
{
|
|
u16* sB = (u16*)sP;
|
|
u16* dB = (u16*)dP;
|
|
|
|
for (s32 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, s32 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
|