f641fccb |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010 |
3 | * |
4 | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. |
5 | * See the COPYING file in the top-level directory. |
6 | */ |
7 | |
8 | #include <stdio.h> |
9 | #include <stdlib.h> |
10 | #include <string.h> |
11 | #include <strings.h> |
12 | #include <ctype.h> |
13 | #include <sys/types.h> |
14 | #include <sys/stat.h> |
15 | #include <fcntl.h> |
16 | #include <sys/ioctl.h> |
17 | #include <unistd.h> |
18 | #include <linux/fb.h> |
19 | |
20 | #include "omapsdl.h" |
21 | #include "omapfb.h" |
22 | #include "linux/fbdev.h" |
23 | #include "linux/oshide.h" |
24 | |
25 | struct omapfb_saved_layer { |
26 | struct omapfb_plane_info pi; |
27 | struct omapfb_mem_info mi; |
28 | }; |
29 | |
b9a19b44 |
30 | static const char *get_fb_device(void) |
31 | { |
32 | const char *fbname = getenv("SDL_FBDEV"); |
33 | if (fbname == NULL) |
34 | fbname = "/dev/fb1"; |
35 | |
36 | return fbname; |
37 | } |
38 | |
f641fccb |
39 | static int osdl_setup_omapfb(int fd, int enabled, int x, int y, int w, int h, int mem) |
40 | { |
41 | struct omapfb_plane_info pi; |
42 | struct omapfb_mem_info mi; |
43 | int ret; |
44 | |
45 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi); |
46 | if (ret != 0) { |
7b66578c |
47 | err_perror("QUERY_PLANE"); |
f641fccb |
48 | return -1; |
49 | } |
50 | |
51 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi); |
52 | if (ret != 0) { |
7b66578c |
53 | err_perror("QUERY_MEM"); |
f641fccb |
54 | return -1; |
55 | } |
56 | |
57 | /* must disable when changing stuff */ |
58 | if (pi.enabled) { |
59 | pi.enabled = 0; |
60 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
61 | if (ret != 0) |
7b66578c |
62 | err_perror("SETUP_PLANE"); |
f641fccb |
63 | } |
64 | |
13f953aa |
65 | if (mi.size < mem) { |
66 | mi.size = mem; |
67 | ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi); |
68 | if (ret != 0) { |
69 | err_perror("SETUP_MEM"); |
70 | return -1; |
71 | } |
f641fccb |
72 | } |
73 | |
74 | pi.pos_x = x; |
75 | pi.pos_y = y; |
76 | pi.out_width = w; |
77 | pi.out_height = h; |
78 | pi.enabled = enabled; |
79 | |
80 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
81 | if (ret != 0) { |
7b66578c |
82 | err_perror("SETUP_PLANE"); |
6f13ad97 |
83 | err("(%d %d %d %d)\n", x, y, w, h); |
f641fccb |
84 | return -1; |
85 | } |
86 | |
87 | return 0; |
88 | } |
89 | |
90 | static int read_sysfs(const char *fname, char *buff, size_t size) |
91 | { |
92 | FILE *f; |
93 | int ret; |
94 | |
95 | f = fopen(fname, "r"); |
96 | if (f == NULL) { |
7b66578c |
97 | err_perror("open %s: ", fname); |
f641fccb |
98 | return -1; |
99 | } |
100 | |
101 | ret = fread(buff, 1, size - 1, f); |
102 | fclose(f); |
103 | if (ret <= 0) { |
7b66578c |
104 | err_perror("read %s: ", fname); |
f641fccb |
105 | return -1; |
106 | } |
107 | |
108 | buff[ret] = 0; |
109 | for (ret--; ret >= 0 && isspace(buff[ret]); ret--) |
110 | buff[ret] = 0; |
111 | |
112 | return 0; |
113 | } |
114 | |
b9a19b44 |
115 | int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata) |
f641fccb |
116 | { |
f641fccb |
117 | int fb_id, overlay_id = -1, screen_id = -1; |
b9a19b44 |
118 | struct fb_var_screeninfo fbvar; |
f641fccb |
119 | char buff[64], screen_name[64]; |
b9a19b44 |
120 | const char *fbname; |
f641fccb |
121 | struct stat status; |
b9a19b44 |
122 | int fd, i, ret; |
123 | int w, h; |
f641fccb |
124 | FILE *f; |
125 | |
b9a19b44 |
126 | fbname = get_fb_device(); |
f641fccb |
127 | |
b9a19b44 |
128 | /* Figure out screen resolution, we need to know default resolution |
129 | * to report to SDL and for centering stuff. |
f641fccb |
130 | * The only way to achieve this seems to be walking some sysfs files.. */ |
131 | ret = stat(fbname, &status); |
132 | if (ret != 0) { |
7b66578c |
133 | err_perror("can't stat %s", fbname); |
b9a19b44 |
134 | goto skip_screen; |
f641fccb |
135 | } |
136 | fb_id = minor(status.st_rdev); |
137 | |
138 | snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id); |
139 | f = fopen(buff, "r"); |
140 | if (f == NULL) { |
7b66578c |
141 | err("can't open %s, skip screen detection", buff); |
f641fccb |
142 | goto skip_screen; |
143 | } |
144 | |
145 | ret = fscanf(f, "%d", &overlay_id); |
146 | fclose(f); |
147 | if (ret != 1) { |
7b66578c |
148 | err("can't parse %s, skip screen detection", buff); |
f641fccb |
149 | goto skip_screen; |
150 | } |
151 | |
152 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id); |
153 | ret = read_sysfs(buff, screen_name, sizeof(screen_name)); |
154 | if (ret < 0) { |
7b66578c |
155 | err("skip screen detection"); |
f641fccb |
156 | goto skip_screen; |
157 | } |
158 | |
159 | for (i = 0; ; i++) { |
160 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i); |
161 | ret = read_sysfs(buff, buff, sizeof(buff)); |
162 | if (ret < 0) |
163 | break; |
164 | |
165 | if (strcmp(screen_name, buff) == 0) { |
166 | screen_id = i; |
167 | break; |
168 | } |
169 | } |
170 | |
171 | if (screen_id < 0) { |
7b66578c |
172 | err("could not find screen"); |
f641fccb |
173 | goto skip_screen; |
174 | } |
175 | |
176 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id); |
177 | f = fopen(buff, "r"); |
178 | if (f == NULL) { |
7b66578c |
179 | err("can't open %s, skip screen detection", buff); |
f641fccb |
180 | goto skip_screen; |
181 | } |
182 | |
b9a19b44 |
183 | ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h); |
f641fccb |
184 | fclose(f); |
185 | if (ret != 2) { |
7b66578c |
186 | err("can't parse %s (%d), skip screen detection", buff, ret); |
f641fccb |
187 | goto skip_screen; |
188 | } |
189 | |
7b66578c |
190 | log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d", |
b9a19b44 |
191 | w, h, screen_name, screen_id, fb_id, overlay_id); |
192 | |
193 | pdata->screen_w = w; |
194 | pdata->screen_h = h; |
195 | return 0; |
f641fccb |
196 | |
197 | skip_screen: |
b9a19b44 |
198 | /* attempt to extract this from FB then */ |
199 | fd = open(fbname, O_RDWR); |
200 | if (fd == -1) { |
201 | err_perror("open %s", fbname); |
202 | return -1; |
203 | } |
204 | |
205 | ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar); |
206 | close(fd); |
207 | if (ret == -1) { |
208 | err_perror("ioctl %s", fbname); |
209 | return -1; |
210 | } |
211 | |
212 | if (fbvar.xres == 0 || fbvar.yres == 0) { |
213 | err("VSCREENINFO has nothing meaningful"); |
214 | return -1; |
215 | } |
216 | |
217 | pdata->screen_w = fbvar.xres; |
218 | pdata->screen_h = fbvar.yres; |
219 | return 0; |
220 | } |
221 | |
222 | static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, |
223 | const char *fbname, int width, int height, int bpp) |
224 | { |
225 | int x = 0, y = 0, w = width, h = height; /* layer size and pos */ |
226 | int screen_w = w, screen_h = h; |
227 | const char *tmp; |
228 | int ret, fd; |
229 | |
230 | if (pdata->screen_w != 0) |
231 | screen_w = pdata->screen_w; |
232 | if (pdata->screen_h != 0) |
233 | screen_h = pdata->screen_h; |
234 | |
235 | fd = open(fbname, O_RDWR); |
236 | if (fd == -1) { |
237 | err_perror("open %s", fbname); |
238 | return -1; |
239 | } |
240 | |
241 | /* FIXME: assuming layer doesn't change here */ |
242 | if (pdata->saved_layer == NULL) { |
243 | struct omapfb_saved_layer *slayer; |
244 | slayer = calloc(1, sizeof(*slayer)); |
245 | if (slayer == NULL) |
246 | return -1; |
247 | |
248 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi); |
249 | if (ret != 0) { |
250 | err_perror("QUERY_PLANE"); |
251 | return -1; |
252 | } |
253 | |
254 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi); |
255 | if (ret != 0) { |
256 | err_perror("QUERY_MEM"); |
257 | return -1; |
258 | } |
259 | |
260 | pdata->saved_layer = slayer; |
261 | } |
262 | |
f641fccb |
263 | tmp = getenv("SDL_OMAP_LAYER_SIZE"); |
264 | if (tmp != NULL) { |
265 | int w_, h_; |
266 | if (strcasecmp(tmp, "fullscreen") == 0) |
267 | w = screen_w, h = screen_h; |
268 | else if (sscanf(tmp, "%dx%d", &w_, &h_) == 2) |
269 | w = w_, h = h_; |
270 | else |
7b66578c |
271 | err("layer size specified incorrectly, " |
272 | "should be like 800x480"); |
f641fccb |
273 | } |
274 | |
275 | x = screen_w / 2 - w / 2; |
276 | y = screen_h / 2 - h / 2; |
277 | ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 3); |
278 | close(fd); |
279 | |
280 | return ret; |
281 | } |
282 | |
283 | int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, int width, int height, int bpp) |
284 | { |
285 | const char *fbname; |
286 | int ret; |
287 | |
288 | bpp = 16; // FIXME |
289 | |
b9a19b44 |
290 | fbname = get_fb_device(); |
f641fccb |
291 | |
292 | if (pdata->fbdev != NULL) { |
293 | vout_fbdev_finish(pdata->fbdev); |
294 | pdata->fbdev = NULL; |
295 | } |
296 | |
297 | omapsdl_config_from_env(); |
298 | |
299 | ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp); |
300 | if (ret < 0) |
301 | return -1; |
302 | |
303 | pdata->fbdev = vout_fbdev_init(fbname, &width, &height, 0); |
304 | if (pdata->fbdev == NULL) |
305 | return -1; |
306 | |
307 | if (!pdata->oshide_done) { |
308 | oshide_init(); |
309 | pdata->oshide_done = 1; |
310 | } |
311 | |
312 | return 0; |
313 | } |
314 | |
315 | void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) |
316 | { |
317 | if (pdata->fbdev == NULL) |
318 | return NULL; |
319 | |
320 | if (gcfg_force_vsync) |
321 | vout_fbdev_wait_vsync(pdata->fbdev); |
322 | |
323 | return vout_fbdev_flip(pdata->fbdev); |
324 | } |
325 | |
326 | void osdl_video_finish(struct SDL_PrivateVideoData *pdata) |
327 | { |
328 | static const char *fbname; |
329 | |
b9a19b44 |
330 | fbname = get_fb_device(); |
f641fccb |
331 | if (pdata->fbdev != NULL) { |
332 | vout_fbdev_finish(pdata->fbdev); |
333 | pdata->fbdev = NULL; |
334 | } |
335 | |
336 | /* restore the OMAP layer */ |
337 | if (pdata->saved_layer != NULL) { |
338 | struct omapfb_saved_layer *slayer = pdata->saved_layer; |
339 | int fd; |
340 | |
341 | fd = open(fbname, O_RDWR); |
342 | if (fd != -1) { |
343 | int enabled = slayer->pi.enabled; |
344 | |
345 | /* be sure to disable while setting up */ |
346 | slayer->pi.enabled = 0; |
347 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
348 | ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi); |
349 | if (enabled) { |
350 | slayer->pi.enabled = enabled; |
351 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
352 | } |
353 | close(fd); |
354 | } |
355 | free(slayer); |
356 | pdata->saved_layer = NULL; |
357 | } |
358 | |
359 | if (pdata->oshide_done) { |
360 | oshide_finish(); |
361 | pdata->oshide_done = 0; |
362 | } |
363 | } |
364 | |