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; |
27 | |
28 | static int window_w, window_h; |
29 | static int fs_w, fs_h; |
30 | static int old_fullscreen; |
31 | static int vout_mode_overlay = -1, vout_mode_gl = -1; |
32 | static void *display, *window; |
33 | |
34 | int plat_sdl_change_video_mode(int w, int h) |
35 | { |
36 | static int prev_w, prev_h; |
37 | |
38 | if (w == 0) |
39 | w = prev_w; |
40 | else |
41 | prev_w = w; |
42 | if (h == 0) |
43 | h = prev_h; |
44 | else |
45 | prev_h = h; |
46 | |
47 | if (plat_sdl_overlay != NULL) { |
48 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
49 | plat_sdl_overlay = NULL; |
50 | } |
51 | if (plat_sdl_gl_active) { |
52 | gl_finish(); |
53 | plat_sdl_gl_active = 0; |
54 | } |
55 | |
56 | if (plat_target.vout_method != 0) { |
57 | Uint32 flags = SDL_RESIZABLE | SDL_SWSURFACE; |
58 | int win_w = window_w; |
59 | int win_h = window_h; |
60 | |
61 | if (plat_target.vout_fullscreen) { |
62 | flags |= SDL_FULLSCREEN; |
63 | win_w = fs_w; |
64 | win_h = fs_h; |
65 | } |
66 | |
67 | // XXX: workaround some occasional mysterious deadlock in SDL_SetVideoMode |
68 | SDL_PumpEvents(); |
69 | |
70 | plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 0, flags); |
71 | if (plat_sdl_screen == NULL) { |
72 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
73 | plat_target.vout_method = 0; |
74 | } |
75 | } |
76 | |
77 | if (plat_target.vout_method == vout_mode_overlay) { |
78 | plat_sdl_overlay = SDL_CreateYUVOverlay(w, h, SDL_UYVY_OVERLAY, plat_sdl_screen); |
79 | if (plat_sdl_overlay != NULL) { |
80 | if ((long)plat_sdl_overlay->pixels[0] & 3) |
81 | fprintf(stderr, "warning: overlay pointer is unaligned\n"); |
82 | |
83 | plat_sdl_overlay_clear(); |
84 | } |
85 | else { |
86 | fprintf(stderr, "warning: could not create overlay.\n"); |
87 | plat_target.vout_method = 0; |
88 | } |
89 | } |
90 | else if (plat_target.vout_method == vout_mode_gl) { |
91 | plat_sdl_gl_active = (gl_init(display, window) == 0); |
92 | if (!plat_sdl_gl_active) { |
93 | fprintf(stderr, "warning: could not init GL.\n"); |
94 | plat_target.vout_method = 0; |
95 | } |
96 | } |
97 | |
98 | if (plat_target.vout_method == 0) { |
99 | SDL_PumpEvents(); |
100 | |
101 | plat_sdl_screen = SDL_SetVideoMode(w, h, 16, SDL_SWSURFACE); |
102 | if (plat_sdl_screen == NULL) { |
103 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
104 | return -1; |
105 | } |
106 | } |
107 | |
108 | old_fullscreen = plat_target.vout_fullscreen; |
109 | return 0; |
110 | } |
111 | |
112 | void plat_sdl_event_handler(void *event_) |
113 | { |
114 | SDL_Event *event = event_; |
115 | |
116 | if (event->type == SDL_VIDEORESIZE) { |
117 | //printf("resize %dx%d\n", event->resize.w, event->resize.h); |
118 | if (plat_target.vout_method != 0 |
119 | && !plat_target.vout_fullscreen && !old_fullscreen) |
120 | { |
121 | window_w = event->resize.w; |
122 | window_h = event->resize.h; |
123 | plat_sdl_change_video_mode(0, 0); |
124 | } |
125 | } |
126 | } |
127 | |
128 | int plat_sdl_init(void) |
129 | { |
130 | static const char *vout_list[] = { NULL, NULL, NULL, NULL }; |
131 | const SDL_VideoInfo *info; |
132 | SDL_SysWMinfo wminfo; |
133 | int overlay_works = 0; |
134 | int gl_works = 0; |
135 | int i, ret, h; |
136 | |
137 | ret = SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE); |
138 | if (ret != 0) { |
139 | fprintf(stderr, "SDL_Init failed: %s\n", SDL_GetError()); |
140 | return -1; |
141 | } |
142 | |
143 | info = SDL_GetVideoInfo(); |
144 | if (info != NULL) { |
145 | fs_w = info->current_w; |
146 | fs_h = info->current_h; |
147 | } |
148 | |
149 | g_menuscreen_w = 640; |
150 | if (fs_w != 0 && g_menuscreen_w > fs_w) |
151 | g_menuscreen_w = fs_w; |
152 | g_menuscreen_h = 480; |
153 | if (fs_h != 0) { |
154 | h = fs_h; |
155 | if (info && info->wm_available && h > WM_DECORATION_H) |
156 | h -= WM_DECORATION_H; |
157 | if (g_menuscreen_h > h) |
158 | g_menuscreen_h = h; |
159 | } |
160 | |
161 | ret = plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h); |
162 | if (ret != 0) { |
163 | plat_sdl_screen = SDL_SetVideoMode(0, 0, 16, SDL_SWSURFACE); |
164 | if (plat_sdl_screen == NULL) { |
165 | fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); |
166 | goto fail; |
167 | } |
168 | |
169 | if (plat_sdl_screen->w < 320 || plat_sdl_screen->h < 240) { |
170 | fprintf(stderr, "resolution %dx%d is too small, sorry.\n", |
171 | plat_sdl_screen->w, plat_sdl_screen->h); |
172 | goto fail; |
173 | } |
174 | } |
175 | g_menuscreen_w = window_w = plat_sdl_screen->w; |
176 | g_menuscreen_h = window_h = plat_sdl_screen->h; |
177 | |
178 | plat_sdl_overlay = SDL_CreateYUVOverlay(plat_sdl_screen->w, plat_sdl_screen->h, |
179 | SDL_UYVY_OVERLAY, plat_sdl_screen); |
180 | if (plat_sdl_overlay != NULL) { |
181 | printf("overlay: fmt %x, planes: %d, pitch: %d, hw: %d\n", |
182 | plat_sdl_overlay->format, plat_sdl_overlay->planes, *plat_sdl_overlay->pitches, |
183 | plat_sdl_overlay->hw_overlay); |
184 | |
185 | if (plat_sdl_overlay->hw_overlay) |
186 | overlay_works = 1; |
187 | else |
188 | fprintf(stderr, "warning: video overlay is not hardware accelerated, " |
189 | "not going to use it.\n"); |
190 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
191 | plat_sdl_overlay = NULL; |
192 | } |
193 | else |
194 | fprintf(stderr, "overlay is not available.\n"); |
195 | |
196 | SDL_VERSION(&wminfo.version); |
197 | SDL_GetWMInfo(&wminfo); |
198 | display = wminfo.info.x11.display; |
199 | window = (void *)wminfo.info.x11.window; |
200 | |
201 | ret = gl_init(display, window); |
202 | if (ret == 0) { |
203 | gl_works = 1; |
204 | gl_finish(); |
205 | } |
206 | |
207 | i = 0; |
208 | vout_list[i++] = "SDL Window"; |
209 | if (overlay_works) { |
210 | plat_target.vout_method = vout_mode_overlay = i; |
211 | vout_list[i++] = "Video Overlay"; |
212 | } |
213 | if (gl_works) { |
214 | plat_target.vout_method = vout_mode_gl = i; |
215 | vout_list[i++] = "OpenGL"; |
216 | } |
217 | plat_target.vout_methods = vout_list; |
218 | |
219 | return 0; |
220 | |
221 | fail: |
222 | SDL_Quit(); |
223 | return -1; |
224 | } |
225 | |
226 | void plat_sdl_finish(void) |
227 | { |
228 | if (plat_sdl_overlay != NULL) { |
229 | SDL_FreeYUVOverlay(plat_sdl_overlay); |
230 | plat_sdl_overlay = NULL; |
231 | } |
232 | if (plat_sdl_gl_active) { |
233 | gl_finish(); |
234 | plat_sdl_gl_active = 0; |
235 | } |
236 | SDL_Quit(); |
237 | } |
238 | |
239 | void plat_sdl_overlay_clear(void) |
240 | { |
241 | int pixels = plat_sdl_overlay->w * plat_sdl_overlay->h; |
242 | int *dst = (int *)plat_sdl_overlay->pixels[0]; |
243 | int v = 0x10801080; |
244 | |
245 | for (; pixels > 0; dst += 4, pixels -= 2 * 4) |
246 | dst[0] = dst[1] = dst[2] = dst[3] = v; |
247 | |
248 | for (; pixels > 0; dst++, pixels -= 2) |
249 | *dst = v; |
250 | } |
251 | |
252 | // vim:shiftwidth=2:expandtab |