e81b987f |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2012 |
3 | * |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
8 | * - MAME license. |
9 | * See the COPYING file in the top-level directory. |
10 | */ |
11 | |
12 | #include <stdio.h> |
13 | #include <SDL.h> |
14 | #include <SDL_syswm.h> |
15 | |
16 | #include "menu.h" |
17 | #include "plat.h" |
18 | #include "gl.h" |
19 | #include "plat_sdl.h" |
20 | |
21 | // XXX: maybe determine this instead.. |
22 | #define WM_DECORATION_H 32 |
23 | |
24 | SDL_Surface *plat_sdl_screen; |
25 | SDL_Overlay *plat_sdl_overlay; |
26 | int plat_sdl_gl_active; |
e288d776 |
27 | void (*plat_sdl_resize_cb)(int w, int h); |
1f84ba9f |
28 | void (*plat_sdl_quit_cb)(void); |
e81b987f |
29 | |
63f173a2 |
30 | static char vid_drv_name[32]; |
e81b987f |
31 | static int window_w, window_h; |
32 | static int fs_w, fs_h; |
33 | static int old_fullscreen; |
34 | static int vout_mode_overlay = -1, vout_mode_gl = -1; |
35 | static void *display, *window; |
0d645bc5 |
36 | static int gl_quirks; |
e81b987f |
37 | |
e54719ef |
38 | /* w, h is layer resolution */ |
39 | int plat_sdl_change_video_mode(int w, int h, int force) |
e81b987f |
40 | { |
41 | static int prev_w, prev_h; |
42 | |
43 | if (w == 0) |
44 | w = prev_w; |
45 | else |
46 | prev_w = w; |
47 | if (h == 0) |
48 | h = prev_h; |
49 | else |
50 | prev_h = h; |
51 | |
e54719ef |
52 | // skip GL recreation if window doesn't change - avoids flicker |
53 | if (plat_target.vout_method == vout_mode_gl && plat_sdl_gl_active |
54 | && plat_target.vout_fullscreen == old_fullscreen && !force) |
55 | { |
56 | return 0; |
57 | } |
58 | |
e81b987f |
59 | if (plat_sdl_overlay != NULL) { |
60 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
61 | plat_sdl_overlay = NULL; |
62 | } |
63 | if (plat_sdl_gl_active) { |
64 | gl_finish(); |
65 | plat_sdl_gl_active = 0; |
66 | } |
67 | |
68 | if (plat_target.vout_method != 0) { |
69 | Uint32 flags = SDL_RESIZABLE | SDL_SWSURFACE; |
70 | int win_w = window_w; |
71 | int win_h = window_h; |
72 | |
73 | if (plat_target.vout_fullscreen) { |
74 | flags |= SDL_FULLSCREEN; |
75 | win_w = fs_w; |
76 | win_h = fs_h; |
77 | } |
78 | |
79 | // XXX: workaround some occasional mysterious deadlock in SDL_SetVideoMode |
80 | SDL_PumpEvents(); |
81 | |
82 | plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 0, flags); |
83 | if (plat_sdl_screen == NULL) { |
84 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
85 | plat_target.vout_method = 0; |
86 | } |
87 | } |
88 | |
89 | if (plat_target.vout_method == vout_mode_overlay) { |
90 | plat_sdl_overlay = SDL_CreateYUVOverlay(w, h, SDL_UYVY_OVERLAY, plat_sdl_screen); |
91 | if (plat_sdl_overlay != NULL) { |
92 | if ((long)plat_sdl_overlay->pixels[0] & 3) |
93 | fprintf(stderr, "warning: overlay pointer is unaligned\n"); |
94 | |
95 | plat_sdl_overlay_clear(); |
96 | } |
97 | else { |
98 | fprintf(stderr, "warning: could not create overlay.\n"); |
99 | plat_target.vout_method = 0; |
100 | } |
101 | } |
102 | else if (plat_target.vout_method == vout_mode_gl) { |
0d645bc5 |
103 | plat_sdl_gl_active = (gl_init(display, window, &gl_quirks) == 0); |
e81b987f |
104 | if (!plat_sdl_gl_active) { |
105 | fprintf(stderr, "warning: could not init GL.\n"); |
106 | plat_target.vout_method = 0; |
107 | } |
108 | } |
109 | |
110 | if (plat_target.vout_method == 0) { |
111 | SDL_PumpEvents(); |
112 | |
113 | plat_sdl_screen = SDL_SetVideoMode(w, h, 16, SDL_SWSURFACE); |
114 | if (plat_sdl_screen == NULL) { |
115 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
116 | return -1; |
117 | } |
118 | } |
119 | |
120 | old_fullscreen = plat_target.vout_fullscreen; |
e288d776 |
121 | if (plat_sdl_resize_cb != NULL) |
122 | plat_sdl_resize_cb(plat_sdl_screen->w, plat_sdl_screen->h); |
123 | |
e81b987f |
124 | return 0; |
125 | } |
126 | |
127 | void plat_sdl_event_handler(void *event_) |
128 | { |
e54719ef |
129 | static int was_active; |
e81b987f |
130 | SDL_Event *event = event_; |
131 | |
1f84ba9f |
132 | switch (event->type) { |
133 | case SDL_VIDEORESIZE: |
e81b987f |
134 | //printf("resize %dx%d\n", event->resize.w, event->resize.h); |
135 | if (plat_target.vout_method != 0 |
136 | && !plat_target.vout_fullscreen && !old_fullscreen) |
137 | { |
138 | window_w = event->resize.w; |
139 | window_h = event->resize.h; |
e54719ef |
140 | plat_sdl_change_video_mode(0, 0, 1); |
141 | } |
1f84ba9f |
142 | break; |
143 | case SDL_ACTIVEEVENT: |
e54719ef |
144 | if (event->active.gain && !was_active) { |
145 | if (plat_sdl_overlay != NULL) { |
146 | SDL_Rect dstrect = { 0, 0, plat_sdl_screen->w, plat_sdl_screen->h }; |
147 | SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect); |
148 | } |
149 | else if (plat_sdl_gl_active) { |
0d645bc5 |
150 | if (gl_quirks & GL_QUIRK_ACTIVATE_RECREATE) { |
151 | gl_finish(); |
152 | plat_sdl_gl_active = (gl_init(display, window, &gl_quirks) == 0); |
153 | } |
e54719ef |
154 | gl_flip(NULL, 0, 0); |
155 | } |
156 | // else SDL takes care of it |
e81b987f |
157 | } |
e54719ef |
158 | was_active = event->active.gain; |
1f84ba9f |
159 | break; |
160 | case SDL_QUIT: |
161 | if (plat_sdl_quit_cb != NULL) |
162 | plat_sdl_quit_cb(); |
163 | break; |
e81b987f |
164 | } |
165 | } |
166 | |
167 | int plat_sdl_init(void) |
168 | { |
169 | static const char *vout_list[] = { NULL, NULL, NULL, NULL }; |
170 | const SDL_VideoInfo *info; |
171 | SDL_SysWMinfo wminfo; |
172 | int overlay_works = 0; |
173 | int gl_works = 0; |
174 | int i, ret, h; |
175 | |
176 | ret = SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE); |
177 | if (ret != 0) { |
178 | fprintf(stderr, "SDL_Init failed: %s\n", SDL_GetError()); |
179 | return -1; |
180 | } |
181 | |
182 | info = SDL_GetVideoInfo(); |
183 | if (info != NULL) { |
184 | fs_w = info->current_w; |
185 | fs_h = info->current_h; |
63f173a2 |
186 | printf("plat_sdl: using %dx%d as fullscreen resolution\n", fs_w, fs_h); |
e81b987f |
187 | } |
188 | |
189 | g_menuscreen_w = 640; |
190 | if (fs_w != 0 && g_menuscreen_w > fs_w) |
191 | g_menuscreen_w = fs_w; |
192 | g_menuscreen_h = 480; |
193 | if (fs_h != 0) { |
194 | h = fs_h; |
195 | if (info && info->wm_available && h > WM_DECORATION_H) |
196 | h -= WM_DECORATION_H; |
197 | if (g_menuscreen_h > h) |
198 | g_menuscreen_h = h; |
199 | } |
200 | |
e54719ef |
201 | ret = plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, 1); |
e81b987f |
202 | if (ret != 0) { |
203 | plat_sdl_screen = SDL_SetVideoMode(0, 0, 16, SDL_SWSURFACE); |
204 | if (plat_sdl_screen == NULL) { |
205 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
206 | goto fail; |
207 | } |
208 | |
209 | if (plat_sdl_screen->w < 320 || plat_sdl_screen->h < 240) { |
210 | fprintf(stderr, "resolution %dx%d is too small, sorry.\n", |
211 | plat_sdl_screen->w, plat_sdl_screen->h); |
212 | goto fail; |
213 | } |
214 | } |
215 | g_menuscreen_w = window_w = plat_sdl_screen->w; |
216 | g_menuscreen_h = window_h = plat_sdl_screen->h; |
217 | |
218 | plat_sdl_overlay = SDL_CreateYUVOverlay(plat_sdl_screen->w, plat_sdl_screen->h, |
219 | SDL_UYVY_OVERLAY, plat_sdl_screen); |
220 | if (plat_sdl_overlay != NULL) { |
63f173a2 |
221 | printf("plat_sdl: overlay: fmt %x, planes: %d, pitch: %d, hw: %d\n", |
e81b987f |
222 | plat_sdl_overlay->format, plat_sdl_overlay->planes, *plat_sdl_overlay->pitches, |
223 | plat_sdl_overlay->hw_overlay); |
224 | |
225 | if (plat_sdl_overlay->hw_overlay) |
226 | overlay_works = 1; |
227 | else |
228 | fprintf(stderr, "warning: video overlay is not hardware accelerated, " |
229 | "not going to use it.\n"); |
230 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
231 | plat_sdl_overlay = NULL; |
232 | } |
233 | else |
234 | fprintf(stderr, "overlay is not available.\n"); |
235 | |
1f84ba9f |
236 | // get x11 display/window for GL |
237 | SDL_VideoDriverName(vid_drv_name, sizeof(vid_drv_name)); |
215e7ed2 |
238 | #ifdef SDL_VIDEO_DRIVER_X11 |
1f84ba9f |
239 | if (strcmp(vid_drv_name, "x11") == 0) { |
240 | SDL_VERSION(&wminfo.version); |
241 | ret = SDL_GetWMInfo(&wminfo); |
242 | if (ret > 0) { |
243 | display = wminfo.info.x11.display; |
244 | window = (void *)wminfo.info.x11.window; |
245 | } |
246 | } |
215e7ed2 |
247 | #endif |
e81b987f |
248 | |
0d645bc5 |
249 | ret = gl_init(display, window, &gl_quirks); |
e81b987f |
250 | if (ret == 0) { |
251 | gl_works = 1; |
252 | gl_finish(); |
253 | } |
254 | |
255 | i = 0; |
256 | vout_list[i++] = "SDL Window"; |
257 | if (overlay_works) { |
258 | plat_target.vout_method = vout_mode_overlay = i; |
259 | vout_list[i++] = "Video Overlay"; |
260 | } |
261 | if (gl_works) { |
262 | plat_target.vout_method = vout_mode_gl = i; |
263 | vout_list[i++] = "OpenGL"; |
264 | } |
265 | plat_target.vout_methods = vout_list; |
266 | |
267 | return 0; |
268 | |
269 | fail: |
270 | SDL_Quit(); |
271 | return -1; |
272 | } |
273 | |
274 | void plat_sdl_finish(void) |
275 | { |
276 | if (plat_sdl_overlay != NULL) { |
277 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
278 | plat_sdl_overlay = NULL; |
279 | } |
280 | if (plat_sdl_gl_active) { |
281 | gl_finish(); |
282 | plat_sdl_gl_active = 0; |
283 | } |
63f173a2 |
284 | // restore back to initial resolution |
285 | // resolves black screen issue on R-Pi |
286 | if (strcmp(vid_drv_name, "x11") != 0) |
287 | SDL_SetVideoMode(fs_w, fs_h, 16, SDL_SWSURFACE); |
e81b987f |
288 | SDL_Quit(); |
289 | } |
290 | |
291 | void plat_sdl_overlay_clear(void) |
292 | { |
293 | int pixels = plat_sdl_overlay->w * plat_sdl_overlay->h; |
294 | int *dst = (int *)plat_sdl_overlay->pixels[0]; |
295 | int v = 0x10801080; |
296 | |
297 | for (; pixels > 0; dst += 4, pixels -= 2 * 4) |
298 | dst[0] = dst[1] = dst[2] = dst[3] = v; |
299 | |
300 | for (; pixels > 0; dst++, pixels -= 2) |
301 | *dst = v; |
302 | } |
303 | |
304 | // vim:shiftwidth=2:expandtab |