| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 2003 Sam Hocevar |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Library General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with this library; if not, write to the Free |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | |
| 19 | Sam Hocevar |
| 20 | sam@zoy.org |
| 21 | */ |
| 22 | |
| 23 | #ifdef SAVE_RCSID |
| 24 | static char rcsid = |
| 25 | "@(#) $Id: libsdl-1.2.11-libcaca.patch,v 1.1 2006/09/18 16:06:06 mr_bones_ Exp $"; |
| 26 | #endif |
| 27 | |
| 28 | /* libcaca based SDL video driver implementation. |
| 29 | */ |
| 30 | |
| 31 | #include <stdlib.h> |
| 32 | #include <stdio.h> |
| 33 | #include <string.h> |
| 34 | #include <unistd.h> |
| 35 | #include <sys/stat.h> |
| 36 | |
| 37 | |
| 38 | #include "SDL.h" |
| 39 | #include "SDL_error.h" |
| 40 | #include "SDL_video.h" |
| 41 | #include "SDL_mouse.h" |
| 42 | #include "../SDL_sysvideo.h" |
| 43 | #include "../SDL_pixels_c.h" |
| 44 | #include "../../events/SDL_events_c.h" |
| 45 | |
| 46 | #include "SDL_cacavideo.h" |
| 47 | #include "SDL_cacaevents_c.h" |
| 48 | |
| 49 | #include <caca.h> |
| 50 | #ifdef CACA_API_VERSION_1 |
| 51 | #include <caca0.h> |
| 52 | #endif |
| 53 | |
| 54 | /* Initialization/Query functions */ |
| 55 | static int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| 56 | static SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| 57 | static SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| 58 | static void Caca_VideoQuit(_THIS); |
| 59 | |
| 60 | /* Hardware surface functions */ |
| 61 | static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface); |
| 62 | static int Caca_LockHWSurface(_THIS, SDL_Surface *surface); |
| 63 | static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface); |
| 64 | static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| 65 | static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface); |
| 66 | |
| 67 | /* Cache the VideoDevice struct */ |
| 68 | static struct SDL_VideoDevice *local_this; |
| 69 | |
| 70 | /* libcaca driver bootstrap functions */ |
| 71 | |
| 72 | static int Caca_Available(void) |
| 73 | { |
| 74 | return 1; /* Always available ! */ |
| 75 | } |
| 76 | |
| 77 | static void Caca_DeleteDevice(SDL_VideoDevice *device) |
| 78 | { |
| 79 | free(device->hidden); |
| 80 | free(device); |
| 81 | } |
| 82 | static SDL_VideoDevice *Caca_CreateDevice(int devindex) |
| 83 | { |
| 84 | SDL_VideoDevice *device; |
| 85 | |
| 86 | /* Initialize all variables that we clean on shutdown */ |
| 87 | device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice)); |
| 88 | if ( device ) { |
| 89 | memset(device, 0, (sizeof *device)); |
| 90 | device->hidden = (struct SDL_PrivateVideoData *) |
| 91 | malloc((sizeof *device->hidden)); |
| 92 | } |
| 93 | if ( (device == NULL) || (device->hidden == NULL) ) { |
| 94 | SDL_OutOfMemory(); |
| 95 | if ( device ) { |
| 96 | free(device); |
| 97 | } |
| 98 | return(0); |
| 99 | } |
| 100 | memset(device->hidden, 0, (sizeof *device->hidden)); |
| 101 | |
| 102 | /* Set the function pointers */ |
| 103 | device->VideoInit = Caca_VideoInit; |
| 104 | device->ListModes = Caca_ListModes; |
| 105 | device->SetVideoMode = Caca_SetVideoMode; |
| 106 | device->CreateYUVOverlay = NULL; |
| 107 | device->SetColors = NULL; |
| 108 | device->UpdateRects = NULL; |
| 109 | device->VideoQuit = Caca_VideoQuit; |
| 110 | device->AllocHWSurface = Caca_AllocHWSurface; |
| 111 | device->CheckHWBlit = NULL; |
| 112 | device->FillHWRect = NULL; |
| 113 | device->SetHWColorKey = NULL; |
| 114 | device->SetHWAlpha = NULL; |
| 115 | device->LockHWSurface = Caca_LockHWSurface; |
| 116 | device->UnlockHWSurface = Caca_UnlockHWSurface; |
| 117 | device->FlipHWSurface = NULL; |
| 118 | device->FreeHWSurface = Caca_FreeHWSurface; |
| 119 | device->SetCaption = NULL; |
| 120 | device->SetIcon = NULL; |
| 121 | device->IconifyWindow = NULL; |
| 122 | device->GrabInput = NULL; |
| 123 | device->GetWMInfo = NULL; |
| 124 | device->InitOSKeymap = Caca_InitOSKeymap; |
| 125 | device->PumpEvents = Caca_PumpEvents; |
| 126 | |
| 127 | device->free = Caca_DeleteDevice; |
| 128 | |
| 129 | return device; |
| 130 | } |
| 131 | |
| 132 | VideoBootStrap CACA_bootstrap = { |
| 133 | "caca", "Color ASCII Art Library", |
| 134 | Caca_Available, Caca_CreateDevice |
| 135 | }; |
| 136 | |
| 137 | int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| 138 | { |
| 139 | int i; |
| 140 | |
| 141 | /* Initialize all variables that we clean on shutdown */ |
| 142 | for ( i=0; i<SDL_NUMMODES; ++i ) { |
| 143 | SDL_modelist[i] = malloc(sizeof(SDL_Rect)); |
| 144 | SDL_modelist[i]->x = SDL_modelist[i]->y = 0; |
| 145 | } |
| 146 | /* Modes sorted largest to smallest */ |
| 147 | SDL_modelist[0]->w = 1024; SDL_modelist[0]->h = 768; |
| 148 | SDL_modelist[1]->w = 800; SDL_modelist[1]->h = 600; |
| 149 | SDL_modelist[2]->w = 640; SDL_modelist[2]->h = 480; |
| 150 | SDL_modelist[3]->w = 320; SDL_modelist[3]->h = 400; |
| 151 | SDL_modelist[4]->w = 320; SDL_modelist[4]->h = 240; |
| 152 | SDL_modelist[5]->w = 320; SDL_modelist[5]->h = 200; |
| 153 | SDL_modelist[6] = NULL; |
| 154 | |
| 155 | Caca_mutex = SDL_CreateMutex(); |
| 156 | |
| 157 | /* Initialize the library */ |
| 158 | if ( caca_init() != 0 ) { |
| 159 | SDL_SetError("Unable to initialize libcaca"); |
| 160 | return(-1); |
| 161 | } |
| 162 | |
| 163 | /* Initialize private variables */ |
| 164 | Caca_lastkey = 0; |
| 165 | Caca_bitmap = NULL; |
| 166 | Caca_buffer = NULL; |
| 167 | |
| 168 | local_this = this; |
| 169 | |
| 170 | /* Determine the screen depth (use default 8-bit depth) */ |
| 171 | vformat->BitsPerPixel = 8; |
| 172 | vformat->BytesPerPixel = 1; |
| 173 | |
| 174 | /* We're done! */ |
| 175 | return(0); |
| 176 | } |
| 177 | |
| 178 | SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| 179 | { |
| 180 | if(format->BitsPerPixel != 8) |
| 181 | return NULL; |
| 182 | |
| 183 | if ( flags & SDL_FULLSCREEN ) { |
| 184 | return SDL_modelist; |
| 185 | } else { |
| 186 | return (SDL_Rect **) -1; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* Various screen update functions available */ |
| 191 | static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
| 192 | |
| 193 | SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current, |
| 194 | int width, int height, int bpp, Uint32 flags) |
| 195 | { |
| 196 | if ( Caca_buffer ) { |
| 197 | free( Caca_buffer ); |
| 198 | Caca_buffer = NULL; |
| 199 | } |
| 200 | |
| 201 | if ( Caca_bitmap ) { |
| 202 | caca_free_bitmap( Caca_bitmap ); |
| 203 | Caca_bitmap = NULL; |
| 204 | } |
| 205 | |
| 206 | Caca_buffer = malloc(2 * ((width + 15) & ~15) * height); |
| 207 | if ( ! Caca_buffer ) { |
| 208 | SDL_SetError("Couldn't allocate buffer for requested mode"); |
| 209 | return(NULL); |
| 210 | } |
| 211 | |
| 212 | memset(Caca_buffer, 0, 2 * ((width + 15) & ~15) * height); |
| 213 | |
| 214 | /* Allocate the new pixel format for the screen */ |
| 215 | if ( ! SDL_ReallocFormat(current, 16, 0xf800, 0x07e0, 0x001f, 0) ) { |
| 216 | return(NULL); |
| 217 | } |
| 218 | |
| 219 | /* Set up the new mode framebuffer */ |
| 220 | current->flags = SDL_FULLSCREEN; |
| 221 | Caca_w = current->w = width; |
| 222 | Caca_h = current->h = height; |
| 223 | current->pitch = 2 * ((width + 15) & ~15); |
| 224 | current->pixels = Caca_buffer; |
| 225 | |
| 226 | /* Create the libcaca bitmap */ |
| 227 | Caca_bitmap = caca_create_bitmap( 16, width, height, current->pitch, 0xf800, 0x07e0, 0x001f, 0x0000 ); |
| 228 | if ( ! Caca_bitmap ) { |
| 229 | SDL_SetError("Couldn't allocate libcaca bitmap"); |
| 230 | return(NULL); |
| 231 | } |
| 232 | |
| 233 | /* Set the blit function */ |
| 234 | this->UpdateRects = Caca_DirectUpdate; |
| 235 | |
| 236 | /* We're done */ |
| 237 | return(current); |
| 238 | } |
| 239 | |
| 240 | /* We don't actually allow hardware surfaces other than the main one */ |
| 241 | static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 242 | { |
| 243 | return(-1); |
| 244 | } |
| 245 | static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface) |
| 246 | { |
| 247 | return; |
| 248 | } |
| 249 | |
| 250 | /* We need to wait for vertical retrace on page flipped displays */ |
| 251 | static int Caca_LockHWSurface(_THIS, SDL_Surface *surface) |
| 252 | { |
| 253 | /* TODO ? */ |
| 254 | return(0); |
| 255 | } |
| 256 | static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| 257 | { |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | /* FIXME: How is this done with libcaca? */ |
| 262 | static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface) |
| 263 | { |
| 264 | SDL_mutexP(Caca_mutex); |
| 265 | caca_refresh(); |
| 266 | SDL_mutexV(Caca_mutex); |
| 267 | return(0); |
| 268 | } |
| 269 | |
| 270 | static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
| 271 | { |
| 272 | SDL_mutexP(Caca_mutex); |
| 273 | caca_draw_bitmap( 0, 0, caca_get_width() - 1, caca_get_height() - 1, |
| 274 | Caca_bitmap, Caca_buffer ); |
| 275 | caca_refresh(); |
| 276 | SDL_mutexV(Caca_mutex); |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | /* Note: If we are terminated, this could be called in the middle of |
| 281 | another SDL video routine -- notably UpdateRects. |
| 282 | */ |
| 283 | void Caca_VideoQuit(_THIS) |
| 284 | { |
| 285 | int i; |
| 286 | |
| 287 | /* Free video mode lists */ |
| 288 | for ( i=0; i<SDL_NUMMODES; ++i ) { |
| 289 | if ( SDL_modelist[i] != NULL ) { |
| 290 | free(SDL_modelist[i]); |
| 291 | SDL_modelist[i] = NULL; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | if ( Caca_bitmap ) { |
| 296 | caca_free_bitmap( Caca_bitmap ); |
| 297 | Caca_bitmap = NULL; |
| 298 | } |
| 299 | |
| 300 | caca_end(); |
| 301 | |
| 302 | SDL_DestroyMutex(Caca_mutex); |
| 303 | } |
| 304 | |