e14743d1 |
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 | |