1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2004 Sam Lantinga 4 Copyright (C) 2001 Hsieh-Fu Tsai 5 Copyright (C) 2002 Greg Haerr <greg (at) censoft.com> 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Library General Public 9 License as published by the Free Software Foundation; either 10 version 2 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Library General Public License for more details. 16 17 You should have received a copy of the GNU Library General Public 18 License along with this library; if not, write to the Free 19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 21 Sam Lantinga 22 slouken (at) libsdl.org 23 24 Hsieh-Fu Tsai 25 clare (at) setabox.com 26 */ 27 #include "SDL_config.h" 28 29 #include "SDL_nximage_c.h" 30 31 void NX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects) 32 { 33 int i, j, xinc, yinc, destinc, rowinc ; 34 int x, y, w, h ; 35 unsigned char * src = NULL, * dest = NULL ; 36 37 Dprintf ("enter NX_NormalUpdate\n") ; 38 39 /* These are the values for the incoming image */ 40 xinc = this -> screen -> format -> BytesPerPixel ; 41 yinc = this -> screen -> pitch ; 42 43 for (i = 0; i < numrects; ++ i) { 44 x = rects [i].x, y = rects [i].y ; 45 w = rects [i].w, h = rects [i].h ; 46 src = SDL_Image + y * yinc + x * xinc ; 47 #ifdef ENABLE_NANOX_DIRECT_FB 48 if (Clientfb) { 49 if (currently_fullscreen) 50 dest = fbinfo.winpixels + (((y+OffsetY) * fbinfo.pitch) + 51 ((x+OffsetX) * fbinfo.bytespp)); 52 else 53 dest = fbinfo.winpixels + ((y * fbinfo.pitch) + (x * fbinfo.bytespp)); 54 destinc = fbinfo.pitch; 55 } 56 else 57 #endif 58 { 59 dest = Image_buff ; 60 destinc = w * xinc ; 61 } 62 rowinc = w * xinc; 63 64 // apply GammaRamp table 65 if ((pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888) 66 && GammaRamp_R && GammaRamp_G && GammaRamp_B) { 67 Uint8 * ptrsrc ; 68 Uint8 * ptrdst ; 69 int k ; 70 71 for (j = h; j > 0; -- j, src += yinc, dest += destinc) { 72 ptrsrc = src ; 73 ptrdst = dest ; 74 for (k = w; k > 0; -- k) { 75 *ptrdst++ = GammaRamp_B [*ptrsrc++] >> 8; 76 *ptrdst++ = GammaRamp_G [*ptrsrc++] >> 8; 77 *ptrdst++ = GammaRamp_R [*ptrsrc++] >> 8; 78 *ptrdst++ = 0; 79 ++ptrsrc; 80 } 81 } 82 } 83 #if 1 /* This is needed for microwindows 0.90 or older */ 84 else if (pixel_type == MWPF_TRUECOLOR0888 || pixel_type == MWPF_TRUECOLOR888) { 85 Uint8 * ptrsrc ; 86 Uint8 * ptrdst ; 87 int k ; 88 89 for (j = h; j > 0; -- j, src += yinc, dest += destinc) { 90 ptrsrc = src ; 91 ptrdst = dest ; 92 for (k = w; k > 0; -- k) { 93 *ptrdst++ = *ptrsrc++; 94 *ptrdst++ = *ptrsrc++; 95 *ptrdst++ = *ptrsrc++; 96 *ptrdst++ = 0; 97 ++ptrsrc; 98 } 99 } 100 } 101 #endif 102 else 103 { 104 for (j = h; j > 0; -- j, src += yinc, dest += destinc) 105 SDL_memcpy (dest, src, rowinc) ; 106 } 107 if (!Clientfb) { 108 if (currently_fullscreen) { 109 GrArea (FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w, h, Image_buff, 110 pixel_type) ; 111 } else { 112 GrArea (SDL_Window, SDL_GC, x, y, w, h, Image_buff, pixel_type) ; 113 } 114 } 115 } 116 GrFlush(); 117 118 Dprintf ("leave NX_NormalUpdate\n") ; 119 } 120 121 int NX_SetupImage (_THIS, SDL_Surface * screen) 122 { 123 int size = screen -> h * screen -> pitch ; 124 125 Dprintf ("enter NX_SetupImage\n") ; 126 127 screen -> pixels = (void *) SDL_malloc (size) ; 128 129 if (!Clientfb) { 130 Image_buff = (unsigned char *) SDL_malloc (size) ; 131 if (screen -> pixels == NULL || Image_buff == NULL) { 132 SDL_free (screen -> pixels) ; 133 SDL_free (Image_buff) ; 134 SDL_OutOfMemory () ; 135 return -1 ; 136 } 137 } 138 139 SDL_Image = (unsigned char *) screen -> pixels ; 140 141 this -> UpdateRects = NX_NormalUpdate ; 142 143 Dprintf ("leave NX_SetupImage\n") ; 144 return 0 ; 145 } 146 147 void NX_DestroyImage (_THIS, SDL_Surface * screen) 148 { 149 Dprintf ("enter NX_DestroyImage\n") ; 150 151 if (SDL_Image) SDL_free (SDL_Image) ; 152 if (Image_buff) SDL_free (Image_buff) ; 153 if (screen) screen -> pixels = NULL ; 154 155 Dprintf ("leave NX_DestroyImage\n") ; 156 } 157 158 int NX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags) 159 { 160 int retval ; 161 GR_SCREEN_INFO si ; 162 163 Dprintf ("enter NX_ResizeImage\n") ; 164 165 NX_DestroyImage (this, screen) ; 166 retval = NX_SetupImage (this, screen) ; 167 168 GrGetScreenInfo (& si) ; 169 OffsetX = (si.cols - screen -> w) / 2 ; 170 OffsetY = (si.rows - screen -> h) / 2 ; 171 172 #ifdef ENABLE_NANOX_DIRECT_FB 173 if (Clientfb) { 174 /* Get current window position and fb pointer*/ 175 if (currently_fullscreen) 176 GrGetWindowFBInfo(FSwindow, &fbinfo); 177 else 178 GrGetWindowFBInfo(SDL_Window, &fbinfo); 179 } 180 #endif 181 Dprintf ("leave NX_ResizeImage\n") ; 182 return retval ; 183 } 184 185 void NX_RefreshDisplay (_THIS) 186 { 187 Dprintf ("enter NX_RefreshDisplay\n") ; 188 189 // Don't refresh a display that doesn't have an image (like GL) 190 if (! SDL_Image) { 191 return; 192 } 193 194 #ifdef ENABLE_NANOX_DIRECT_FB 195 if (Clientfb) { 196 int j; 197 char *src, *dest = NULL; 198 int xinc, yinc, rowinc; 199 200 GrGetWindowFBInfo(SDL_Window, &fbinfo); 201 202 xinc = this -> screen -> format -> BytesPerPixel ; 203 yinc = this -> screen -> pitch ; 204 205 src = SDL_Image; 206 if (currently_fullscreen) 207 dest = fbinfo.winpixels + ((OffsetY * fbinfo.pitch) + 208 (OffsetX * fbinfo.bytespp)); 209 else 210 dest = fbinfo.winpixels; 211 rowinc = xinc * this -> screen -> w; 212 213 for (j = this -> screen -> h; j > 0; -- j, src += yinc, dest += fbinfo.pitch) 214 SDL_memcpy (dest, src, rowinc) ; 215 } 216 else 217 #endif 218 { 219 if (currently_fullscreen) { 220 GrArea (FSwindow, SDL_GC, OffsetX, OffsetY, this -> screen -> w, 221 this -> screen -> h, SDL_Image, pixel_type) ; 222 } else { 223 GrArea (SDL_Window, SDL_GC, 0, 0, this -> screen -> w, 224 this -> screen -> h, SDL_Image, pixel_type) ; 225 } 226 } 227 GrFlush(); 228 229 Dprintf ("leave NX_RefreshDisplay\n") ; 230 } 231
