mirror of
https://github.com/DaedalusX64/daedalus.git
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153 lines
4 KiB
C++
153 lines
4 KiB
C++
/*
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Copyright (C) 2020 StrmnNrmn
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef HLEGRAPHICS_CONVERTFORMATS_H_
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#define HLEGRAPHICS_CONVERTFORMATS_H_
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// convert rgba values (0-255 per channel) to a dword in A8R8G8B8 order..
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#define CONVERT_RGBA(r,g,b,a) (a<<24) | (b<<16) | (g<<8) | r
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#include <array>
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static std::array<const u8, 2> OneToEight = {
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// static const u8 OneToEight[] = {
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0x00, // 0 -> 00 00 00 00
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0xff // 1 -> 11 11 11 11
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};
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// static const u8 ThreeToEight[8] =
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static std::array<const u8, 8> ThreeToEight = {
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0x00, // 000 -> 00 00 00 00
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0x24, // 001 -> 00 10 01 00
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0x49, // 010 -> 01 00 10 01
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0x6d, // 011 -> 01 10 11 01
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0x92, // 100 -> 10 01 00 10
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0xb6, // 101 -> 10 11 01 10
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0xdb, // 110 -> 11 01 10 11
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0xff // 111 -> 11 11 11 11
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};
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// static const u8 FourToEight[16] =
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static std::array< const u8, 16> FourToEight = {
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0x00, 0x11, 0x22, 0x33,
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0x44, 0x55, 0x66, 0x77,
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0x88, 0x99, 0xaa, 0xbb,
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0xcc, 0xdd, 0xee, 0xff
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};
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// static const u8 FiveToEight[] = {
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static std::array<const u8, 32> FiveToEight = {
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0x00, // 00000 -> 00000000
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0x08, // 00001 -> 00001000
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0x10, // 00010 -> 00010000
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0x18, // 00011 -> 00011000
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0x21, // 00100 -> 00100001
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0x29, // 00101 -> 00101001
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0x31, // 00110 -> 00110001
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0x39, // 00111 -> 00111001
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0x42, // 01000 -> 01000010
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0x4a, // 01001 -> 01001010
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0x52, // 01010 -> 01010010
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0x5a, // 01011 -> 01011010
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0x63, // 01100 -> 01100011
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0x6b, // 01101 -> 01101011
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0x73, // 01110 -> 01110011
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0x7b, // 01111 -> 01111011
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0x84, // 10000 -> 10000100
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0x8c, // 10001 -> 10001100
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0x94, // 10010 -> 10010100
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0x9c, // 10011 -> 10011100
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0xa5, // 10100 -> 10100101
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0xad, // 10101 -> 10101101
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0xb5, // 10110 -> 10110101
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0xbd, // 10111 -> 10111101
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0xc6, // 11000 -> 11000110
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0xce, // 11001 -> 11001110
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0xd6, // 11010 -> 11010110
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0xde, // 11011 -> 11011110
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0xe7, // 11100 -> 11100111
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0xef, // 11101 -> 11101111
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0xf7, // 11110 -> 11110111
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0xff // 11111 -> 11111111
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};
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static inline u32 RGBA32(u8 a, u8 b, u8 g, u8 r)
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{
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return CONVERT_RGBA(r, g, b, a);
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}
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static inline u32 RGBA16(u16 v)
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{
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u32 r = FiveToEight[(v>>11)&0x1f];
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u32 g = FiveToEight[(v>> 6)&0x1f];
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u32 b = FiveToEight[(v>> 1)&0x1f];
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u32 a = ((v )&0x01)? 255 : 0;
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return CONVERT_RGBA(r, g, b, a);
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}
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static inline u32 IA16(u16 v)
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{
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u32 i = (v>>8)&0xff;
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u32 a = (v )&0xff;
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return CONVERT_RGBA(i, i, i, a);
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}
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static inline u32 I4(u8 v)
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{
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u32 i = FourToEight[v & 0x0f];
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return CONVERT_RGBA(i, i, i, i);
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}
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static inline u32 IA4(u8 v)
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{
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u32 i = ThreeToEight[(v & 0x0f) >> 1];
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u32 a = OneToEight[(v & 0x01)];
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return CONVERT_RGBA(i, i, i, a);
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}
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static inline u32 YUV16(s32 Y, s32 U, s32 V)
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{
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s32 r = s32(Y + (1.370705f * (V-128)));
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s32 g = s32(Y - (0.698001f * (V-128)) - (0.337633f * (U-128)));
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s32 b = s32(Y + (1.732446f * (U-128)));
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r = r < 0 ? 0 : (r > 255 ? 255 : r);
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g = g < 0 ? 0 : (g > 255 ? 255 : g);
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b = b < 0 ? 0 : (b > 255 ? 255 : b);
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return CONVERT_RGBA(r, g, b, 255);
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}
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static inline u16 YUVtoRGBA(u8 y, u8 u, u8 v)
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{
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f32 r = y + (1.370705f * (v-128));
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f32 g = y - (0.698001f * (v-128)) - (0.337633f * (u-128));
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f32 b = y + (1.732446f * (u-128));
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r *= 0.125f;
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g *= 0.125f;
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b *= 0.125f;
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//clipping the result
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r = r < 0 ? 0 : (r > 32 ? 32 : r);
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g = g < 0 ? 0 : (g > 32 ? 32 : g);
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b = b < 0 ? 0 : (b > 32 ? 32 : b);
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return (u16)(((u16)(r) << 11) |((u16)(g) << 6) |((u16)(b) << 1) | 1);
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}
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#endif // HLEGRAPHICS_CONVERTFORMATS_H_
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