| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <stdlib.h> |
| 22 | |
| 23 | #include "../../types.h" |
| 24 | |
| 25 | static uint32 CBM[3]; |
| 26 | static uint32 *palettetranslate=0; |
| 27 | static int Bpp; // BYTES per pixel |
| 28 | |
| 29 | |
| 30 | int InitBlitToHigh(int b, uint32 rmask, uint32 gmask, uint32 bmask) |
| 31 | { |
| 32 | Bpp=b; |
| 33 | |
| 34 | if(Bpp<=1 || Bpp>4) |
| 35 | return(0); |
| 36 | |
| 37 | if(Bpp==2) |
| 38 | palettetranslate=malloc(65536*4); |
| 39 | else if(Bpp>=3) |
| 40 | palettetranslate=malloc(256*4); |
| 41 | if(!palettetranslate) |
| 42 | return(0); |
| 43 | |
| 44 | CBM[0]=rmask; |
| 45 | CBM[1]=gmask; |
| 46 | CBM[2]=bmask; |
| 47 | return(1); |
| 48 | } |
| 49 | |
| 50 | void KillBlitToHigh(void) |
| 51 | { |
| 52 | free(palettetranslate); |
| 53 | } |
| 54 | |
| 55 | void SetPaletteBlitToHigh(uint8 *src) |
| 56 | { |
| 57 | int cshiftr[3]; |
| 58 | int cshiftl[3]; |
| 59 | int a,x,z,y; |
| 60 | |
| 61 | cshiftl[0]=cshiftl[1]=cshiftl[2]=-1; |
| 62 | for(a=0;a<3;a++) |
| 63 | { |
| 64 | for(x=0,y=-1,z=0;x<32;x++) |
| 65 | { |
| 66 | if(CBM[a]&(1<<x)) |
| 67 | { |
| 68 | if(cshiftl[a]==-1) cshiftl[a]=x; |
| 69 | z++; |
| 70 | } |
| 71 | } |
| 72 | cshiftr[a]=(8-z); |
| 73 | } |
| 74 | |
| 75 | switch(Bpp) |
| 76 | { |
| 77 | case 2: |
| 78 | for(x=0;x<65536;x++) |
| 79 | { |
| 80 | uint16 lower,upper; |
| 81 | |
| 82 | lower=(src[((x&255)<<2)]>>cshiftr[0])<<cshiftl[0]; |
| 83 | lower|=(src[((x&255)<<2)+1]>>cshiftr[1])<<cshiftl[1]; |
| 84 | lower|=(src[((x&255)<<2)+2]>>cshiftr[2])<<cshiftl[2]; |
| 85 | upper=(src[((x>>8)<<2)]>>cshiftr[0])<<cshiftl[0]; |
| 86 | upper|=(src[((x>>8)<<2)+1]>>cshiftr[1])<<cshiftl[1]; |
| 87 | upper|=(src[((x>>8)<<2)+2]>>cshiftr[2])<<cshiftl[2]; |
| 88 | |
| 89 | palettetranslate[x]=lower|(upper<<16); |
| 90 | } |
| 91 | break; |
| 92 | case 3: |
| 93 | case 4: |
| 94 | for(x=0;x<256;x++) |
| 95 | { |
| 96 | uint32 t; |
| 97 | |
| 98 | t=src[(x<<2)]<<cshiftl[0]; |
| 99 | t|=src[(x<<2)+1]<<cshiftl[1]; |
| 100 | t|=src[(x<<2)+2]<<cshiftl[2]; |
| 101 | |
| 102 | palettetranslate[x]=t; |
| 103 | } |
| 104 | break; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | void Blit8To8(uint8 *src, uint8 *dest, int xr, int yr, int pitch, int xscale, int yscale, int efx) |
| 109 | { |
| 110 | int x,y; |
| 111 | int pinc; |
| 112 | |
| 113 | pinc=pitch-(xr*xscale); |
| 114 | if(xscale!=1 || yscale!=1) |
| 115 | { |
| 116 | if(efx) |
| 117 | { |
| 118 | for(y=yr;y;y--,/*dest+=pinc,*/src+=320-xr) |
| 119 | { |
| 120 | int doo=yscale-(yscale>>1); |
| 121 | do |
| 122 | { |
| 123 | for(x=xr;x;x--,src++) |
| 124 | { |
| 125 | int too=xscale; |
| 126 | do |
| 127 | { |
| 128 | *(uint8 *)dest=*(uint8 *)src; |
| 129 | dest++; |
| 130 | } while(--too); |
| 131 | } |
| 132 | src-=xr; |
| 133 | dest+=pinc; |
| 134 | } while(--doo); |
| 135 | //src-=xr*(yscale-(yscale>>1)); |
| 136 | dest+=pitch*(yscale>>1); |
| 137 | |
| 138 | src+=xr; |
| 139 | } |
| 140 | |
| 141 | } |
| 142 | else |
| 143 | { |
| 144 | for(y=yr;y;y--,/*dest+=pinc,*/src+=320-xr) |
| 145 | { |
| 146 | int doo=yscale; |
| 147 | do |
| 148 | { |
| 149 | for(x=xr;x;x--,src++) |
| 150 | { |
| 151 | int too=xscale; |
| 152 | do |
| 153 | { |
| 154 | *(uint8 *)dest=*(uint8 *)src; |
| 155 | dest++; |
| 156 | } while(--too); |
| 157 | } |
| 158 | src-=xr; |
| 159 | dest+=pinc; |
| 160 | } while(--doo); |
| 161 | src+=xr; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | } |
| 166 | else |
| 167 | { |
| 168 | for(y=yr;y;y--,dest+=pinc,src+=320-xr) |
| 169 | for(x=xr;x;x-=4,dest+=4,src+=4) |
| 170 | *(uint32 *)dest=*(uint32 *)src; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | void Blit8ToHigh(uint8 *src, uint8 *dest, int xr, int yr, int pitch) |
| 175 | { |
| 176 | int x,y; |
| 177 | int pinc; |
| 178 | |
| 179 | switch(Bpp) |
| 180 | { |
| 181 | case 4: |
| 182 | pinc=pitch-(xr<<2); |
| 183 | for(y=yr;y;y--) |
| 184 | { |
| 185 | for(x=xr;x;x--) |
| 186 | { |
| 187 | *(uint32 *)dest=palettetranslate[(uint32)*src]; |
| 188 | dest+=4; |
| 189 | src++; |
| 190 | } |
| 191 | dest+=pinc; |
| 192 | src+=16; |
| 193 | } |
| 194 | break; |
| 195 | |
| 196 | case 3: |
| 197 | pinc=pitch-(xr+xr+xr); |
| 198 | for(y=yr;y;y--) |
| 199 | { |
| 200 | for(x=xr;x;x--) |
| 201 | { |
| 202 | uint32 tmp; |
| 203 | tmp=palettetranslate[(uint32)*src]; |
| 204 | *(uint16*)dest=(uint16)tmp; |
| 205 | *&dest[2]=(uint8)(tmp>>16); |
| 206 | dest+=3; |
| 207 | src++; |
| 208 | } |
| 209 | dest+=pinc; |
| 210 | src+=16; |
| 211 | } |
| 212 | break; |
| 213 | |
| 214 | case 2: |
| 215 | pinc=pitch-(xr<<1); |
| 216 | for(y=yr;y;y--) |
| 217 | { |
| 218 | for(x=xr>>1;x;x--) |
| 219 | { |
| 220 | *(uint32 *)dest=palettetranslate[*(uint16 *)src]; |
| 221 | dest+=4; |
| 222 | src+=2; |
| 223 | } |
| 224 | dest+=pinc; |
| 225 | src+=16; |
| 226 | } |
| 227 | break; |
| 228 | } |
| 229 | } |