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1 | /* |
f9b3f440 |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010-2011 |
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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" |
f9b3f440 |
23 | #include "linux/xenv.h" |
f641fccb |
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 | |
5f4b1fd3 |
45 | memset(&pi, 0, sizeof(pi)); |
46 | memset(&mi, 0, sizeof(mi)); |
47 | |
f641fccb |
48 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi); |
49 | if (ret != 0) { |
7b66578c |
50 | err_perror("QUERY_PLANE"); |
f641fccb |
51 | return -1; |
52 | } |
53 | |
54 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi); |
55 | if (ret != 0) { |
7b66578c |
56 | err_perror("QUERY_MEM"); |
f641fccb |
57 | return -1; |
58 | } |
59 | |
60 | /* must disable when changing stuff */ |
61 | if (pi.enabled) { |
62 | pi.enabled = 0; |
63 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
64 | if (ret != 0) |
7b66578c |
65 | err_perror("SETUP_PLANE"); |
f641fccb |
66 | } |
67 | |
13f953aa |
68 | if (mi.size < mem) { |
69 | mi.size = mem; |
70 | ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi); |
71 | if (ret != 0) { |
72 | err_perror("SETUP_MEM"); |
73 | return -1; |
74 | } |
f641fccb |
75 | } |
76 | |
77 | pi.pos_x = x; |
78 | pi.pos_y = y; |
79 | pi.out_width = w; |
80 | pi.out_height = h; |
81 | pi.enabled = enabled; |
82 | |
83 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
84 | if (ret != 0) { |
7b66578c |
85 | err_perror("SETUP_PLANE"); |
6f13ad97 |
86 | err("(%d %d %d %d)\n", x, y, w, h); |
f641fccb |
87 | return -1; |
88 | } |
89 | |
90 | return 0; |
91 | } |
92 | |
93 | static int read_sysfs(const char *fname, char *buff, size_t size) |
94 | { |
95 | FILE *f; |
96 | int ret; |
97 | |
98 | f = fopen(fname, "r"); |
99 | if (f == NULL) { |
7b66578c |
100 | err_perror("open %s: ", fname); |
f641fccb |
101 | return -1; |
102 | } |
103 | |
104 | ret = fread(buff, 1, size - 1, f); |
105 | fclose(f); |
106 | if (ret <= 0) { |
7b66578c |
107 | err_perror("read %s: ", fname); |
f641fccb |
108 | return -1; |
109 | } |
110 | |
111 | buff[ret] = 0; |
112 | for (ret--; ret >= 0 && isspace(buff[ret]); ret--) |
113 | buff[ret] = 0; |
114 | |
115 | return 0; |
116 | } |
117 | |
b9a19b44 |
118 | int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata) |
f641fccb |
119 | { |
f641fccb |
120 | int fb_id, overlay_id = -1, screen_id = -1; |
b9a19b44 |
121 | struct fb_var_screeninfo fbvar; |
f641fccb |
122 | char buff[64], screen_name[64]; |
b9a19b44 |
123 | const char *fbname; |
f641fccb |
124 | struct stat status; |
b9a19b44 |
125 | int fd, i, ret; |
126 | int w, h; |
f641fccb |
127 | FILE *f; |
128 | |
5f4b1fd3 |
129 | pdata->phys_w = pdata->phys_h = 0; |
130 | |
b9a19b44 |
131 | fbname = get_fb_device(); |
f641fccb |
132 | |
b9a19b44 |
133 | /* Figure out screen resolution, we need to know default resolution |
134 | * to report to SDL and for centering stuff. |
f641fccb |
135 | * The only way to achieve this seems to be walking some sysfs files.. */ |
136 | ret = stat(fbname, &status); |
137 | if (ret != 0) { |
7b66578c |
138 | err_perror("can't stat %s", fbname); |
b9a19b44 |
139 | goto skip_screen; |
f641fccb |
140 | } |
141 | fb_id = minor(status.st_rdev); |
142 | |
143 | snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id); |
144 | f = fopen(buff, "r"); |
145 | if (f == NULL) { |
7b66578c |
146 | err("can't open %s, skip screen detection", buff); |
f641fccb |
147 | goto skip_screen; |
148 | } |
149 | |
150 | ret = fscanf(f, "%d", &overlay_id); |
151 | fclose(f); |
152 | if (ret != 1) { |
7b66578c |
153 | err("can't parse %s, skip screen detection", buff); |
f641fccb |
154 | goto skip_screen; |
155 | } |
156 | |
157 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id); |
158 | ret = read_sysfs(buff, screen_name, sizeof(screen_name)); |
159 | if (ret < 0) { |
7b66578c |
160 | err("skip screen detection"); |
f641fccb |
161 | goto skip_screen; |
162 | } |
163 | |
164 | for (i = 0; ; i++) { |
165 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i); |
166 | ret = read_sysfs(buff, buff, sizeof(buff)); |
167 | if (ret < 0) |
168 | break; |
169 | |
170 | if (strcmp(screen_name, buff) == 0) { |
171 | screen_id = i; |
172 | break; |
173 | } |
174 | } |
175 | |
176 | if (screen_id < 0) { |
7b66578c |
177 | err("could not find screen"); |
f641fccb |
178 | goto skip_screen; |
179 | } |
180 | |
181 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id); |
182 | f = fopen(buff, "r"); |
183 | if (f == NULL) { |
7b66578c |
184 | err("can't open %s, skip screen detection", buff); |
f641fccb |
185 | goto skip_screen; |
186 | } |
187 | |
b9a19b44 |
188 | ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h); |
f641fccb |
189 | fclose(f); |
190 | if (ret != 2) { |
7b66578c |
191 | err("can't parse %s (%d), skip screen detection", buff, ret); |
f641fccb |
192 | goto skip_screen; |
193 | } |
194 | |
7b66578c |
195 | log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d", |
b9a19b44 |
196 | w, h, screen_name, screen_id, fb_id, overlay_id); |
197 | |
5f4b1fd3 |
198 | pdata->phys_w = w; |
199 | pdata->phys_h = h; |
b9a19b44 |
200 | return 0; |
f641fccb |
201 | |
202 | skip_screen: |
b9a19b44 |
203 | /* attempt to extract this from FB then */ |
204 | fd = open(fbname, O_RDWR); |
205 | if (fd == -1) { |
206 | err_perror("open %s", fbname); |
207 | return -1; |
208 | } |
209 | |
210 | ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar); |
211 | close(fd); |
212 | if (ret == -1) { |
213 | err_perror("ioctl %s", fbname); |
214 | return -1; |
215 | } |
216 | |
217 | if (fbvar.xres == 0 || fbvar.yres == 0) { |
218 | err("VSCREENINFO has nothing meaningful"); |
219 | return -1; |
220 | } |
221 | |
5f4b1fd3 |
222 | pdata->phys_w = fbvar.xres; |
223 | pdata->phys_h = fbvar.yres; |
b9a19b44 |
224 | return 0; |
225 | } |
226 | |
227 | static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, |
228 | const char *fbname, int width, int height, int bpp) |
229 | { |
230 | int x = 0, y = 0, w = width, h = height; /* layer size and pos */ |
231 | int screen_w = w, screen_h = h; |
f151701d |
232 | int tmp_w, tmp_h; |
b9a19b44 |
233 | const char *tmp; |
234 | int ret, fd; |
235 | |
5f4b1fd3 |
236 | pdata->layer_x = pdata->layer_y = pdata->layer_w = pdata->layer_h = 0; |
237 | |
238 | if (pdata->phys_w != 0) |
239 | screen_w = pdata->phys_w; |
240 | if (pdata->phys_h != 0) |
241 | screen_h = pdata->phys_h; |
b9a19b44 |
242 | |
243 | fd = open(fbname, O_RDWR); |
244 | if (fd == -1) { |
245 | err_perror("open %s", fbname); |
246 | return -1; |
247 | } |
248 | |
249 | /* FIXME: assuming layer doesn't change here */ |
250 | if (pdata->saved_layer == NULL) { |
251 | struct omapfb_saved_layer *slayer; |
252 | slayer = calloc(1, sizeof(*slayer)); |
253 | if (slayer == NULL) |
254 | return -1; |
255 | |
256 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi); |
257 | if (ret != 0) { |
258 | err_perror("QUERY_PLANE"); |
259 | return -1; |
260 | } |
261 | |
262 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi); |
263 | if (ret != 0) { |
264 | err_perror("QUERY_MEM"); |
265 | return -1; |
266 | } |
267 | |
268 | pdata->saved_layer = slayer; |
269 | } |
270 | |
f641fccb |
271 | tmp = getenv("SDL_OMAP_LAYER_SIZE"); |
272 | if (tmp != NULL) { |
f641fccb |
273 | if (strcasecmp(tmp, "fullscreen") == 0) |
274 | w = screen_w, h = screen_h; |
f151701d |
275 | else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2) |
276 | w = tmp_w, h = tmp_h; |
f641fccb |
277 | else |
7b66578c |
278 | err("layer size specified incorrectly, " |
279 | "should be like 800x480"); |
f641fccb |
280 | } |
f151701d |
281 | else { |
282 | /* the layer can't be set larger than screen */ |
283 | tmp_w = w, tmp_h = h; |
284 | if (w > screen_w) |
285 | w = screen_w; |
286 | if (h > screen_h) |
287 | h = screen_h; |
288 | if (w != tmp_w || h != tmp_h) |
289 | log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h); |
290 | } |
f641fccb |
291 | |
292 | x = screen_w / 2 - w / 2; |
293 | y = screen_h / 2 - h / 2; |
f9b3f440 |
294 | ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 2); |
5f4b1fd3 |
295 | if (ret == 0) { |
296 | pdata->layer_x = x; |
297 | pdata->layer_y = y; |
298 | pdata->layer_w = w; |
299 | pdata->layer_h = h; |
300 | } |
f641fccb |
301 | close(fd); |
302 | |
303 | return ret; |
304 | } |
305 | |
455c8c43 |
306 | void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, |
307 | int border_l, int border_r, int border_t, int border_b, |
308 | int width, int height, int bpp, int doublebuf) |
f641fccb |
309 | { |
310 | const char *fbname; |
455c8c43 |
311 | void *result; |
f641fccb |
312 | int ret; |
313 | |
b9a19b44 |
314 | fbname = get_fb_device(); |
f641fccb |
315 | |
316 | if (pdata->fbdev != NULL) { |
317 | vout_fbdev_finish(pdata->fbdev); |
318 | pdata->fbdev = NULL; |
319 | } |
320 | |
f641fccb |
321 | ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp); |
322 | if (ret < 0) |
455c8c43 |
323 | return NULL; |
f641fccb |
324 | |
0bb19c41 |
325 | pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, doublebuf ? 2 : 1); |
f641fccb |
326 | if (pdata->fbdev == NULL) |
455c8c43 |
327 | return NULL; |
328 | |
329 | if (border_l | border_r | border_t | border_b) { |
330 | width -= border_l + border_r; |
331 | height -= border_t + border_b; |
332 | result = vout_fbdev_resize(pdata->fbdev, width, height, bpp, |
333 | border_l, border_r, border_t, border_b, doublebuf ? 2 : 1); |
334 | } |
335 | else { |
336 | result = osdl_video_flip(pdata); |
337 | } |
338 | if (result == NULL) { |
339 | osdl_video_finish(pdata); |
340 | return NULL; |
341 | } |
f641fccb |
342 | |
f9b3f440 |
343 | if (!pdata->xenv_up) { |
344 | ret = xenv_init(); |
345 | if (ret == 0) |
346 | pdata->xenv_up = 1; |
f641fccb |
347 | } |
348 | |
455c8c43 |
349 | return result; |
f641fccb |
350 | } |
351 | |
352 | void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) |
353 | { |
354 | if (pdata->fbdev == NULL) |
355 | return NULL; |
356 | |
5f4b1fd3 |
357 | if (pdata->cfg_force_vsync) |
f641fccb |
358 | vout_fbdev_wait_vsync(pdata->fbdev); |
359 | |
360 | return vout_fbdev_flip(pdata->fbdev); |
361 | } |
362 | |
363 | void osdl_video_finish(struct SDL_PrivateVideoData *pdata) |
364 | { |
365 | static const char *fbname; |
366 | |
b9a19b44 |
367 | fbname = get_fb_device(); |
f641fccb |
368 | if (pdata->fbdev != NULL) { |
369 | vout_fbdev_finish(pdata->fbdev); |
370 | pdata->fbdev = NULL; |
371 | } |
372 | |
373 | /* restore the OMAP layer */ |
374 | if (pdata->saved_layer != NULL) { |
375 | struct omapfb_saved_layer *slayer = pdata->saved_layer; |
376 | int fd; |
377 | |
378 | fd = open(fbname, O_RDWR); |
379 | if (fd != -1) { |
380 | int enabled = slayer->pi.enabled; |
381 | |
382 | /* be sure to disable while setting up */ |
383 | slayer->pi.enabled = 0; |
384 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
385 | ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi); |
386 | if (enabled) { |
387 | slayer->pi.enabled = enabled; |
388 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
389 | } |
390 | close(fd); |
391 | } |
392 | free(slayer); |
393 | pdata->saved_layer = NULL; |
394 | } |
395 | |
f9b3f440 |
396 | if (pdata->xenv_up) { |
397 | xenv_finish(); |
398 | pdata->xenv_up = 0; |
f641fccb |
399 | } |
400 | } |
401 | |