f641fccb |
1 | /* |
0c7caf2b |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010-2012 |
f641fccb |
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 | |
9ab462cd |
20 | #include "osdl.h" |
f641fccb |
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 | |
0c7caf2b |
39 | static int osdl_setup_omapfb(int fd, int enabled, int x, int y, int w, int h, |
40 | int mem, int *buffer_count) |
f641fccb |
41 | { |
42 | struct omapfb_plane_info pi; |
43 | struct omapfb_mem_info mi; |
0c7caf2b |
44 | int mem_blocks = *buffer_count; |
f641fccb |
45 | int ret; |
46 | |
5f4b1fd3 |
47 | memset(&pi, 0, sizeof(pi)); |
48 | memset(&mi, 0, sizeof(mi)); |
49 | |
f641fccb |
50 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi); |
51 | if (ret != 0) { |
7b66578c |
52 | err_perror("QUERY_PLANE"); |
f641fccb |
53 | return -1; |
54 | } |
55 | |
56 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi); |
57 | if (ret != 0) { |
7b66578c |
58 | err_perror("QUERY_MEM"); |
f641fccb |
59 | return -1; |
60 | } |
61 | |
62 | /* must disable when changing stuff */ |
63 | if (pi.enabled) { |
64 | pi.enabled = 0; |
65 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
66 | if (ret != 0) |
7b66578c |
67 | err_perror("SETUP_PLANE"); |
f641fccb |
68 | } |
69 | |
0c7caf2b |
70 | if (mi.size < mem * mem_blocks) { |
71 | for (; mem_blocks > 0; mem_blocks--) { |
72 | mi.size = mem * mem_blocks; |
73 | ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi); |
74 | if (ret == 0) |
75 | break; |
76 | } |
77 | if (ret != 0 || mem_blocks <= 0) { |
78 | err("failed to allocate at least %d bytes of vram:\n", mem); |
13f953aa |
79 | err_perror("SETUP_MEM"); |
80 | return -1; |
81 | } |
f641fccb |
82 | } |
0c7caf2b |
83 | *buffer_count = mem_blocks; |
f641fccb |
84 | |
85 | pi.pos_x = x; |
86 | pi.pos_y = y; |
87 | pi.out_width = w; |
88 | pi.out_height = h; |
89 | pi.enabled = enabled; |
90 | |
91 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
92 | if (ret != 0) { |
7b66578c |
93 | err_perror("SETUP_PLANE"); |
6f13ad97 |
94 | err("(%d %d %d %d)\n", x, y, w, h); |
f641fccb |
95 | return -1; |
96 | } |
97 | |
98 | return 0; |
99 | } |
100 | |
101 | static int read_sysfs(const char *fname, char *buff, size_t size) |
102 | { |
103 | FILE *f; |
104 | int ret; |
105 | |
106 | f = fopen(fname, "r"); |
107 | if (f == NULL) { |
7b66578c |
108 | err_perror("open %s: ", fname); |
f641fccb |
109 | return -1; |
110 | } |
111 | |
112 | ret = fread(buff, 1, size - 1, f); |
113 | fclose(f); |
114 | if (ret <= 0) { |
7b66578c |
115 | err_perror("read %s: ", fname); |
f641fccb |
116 | return -1; |
117 | } |
118 | |
119 | buff[ret] = 0; |
120 | for (ret--; ret >= 0 && isspace(buff[ret]); ret--) |
121 | buff[ret] = 0; |
122 | |
123 | return 0; |
124 | } |
125 | |
34edc246 |
126 | int read_vscreeninfo(const char *fbname, int *w, int *h) |
127 | { |
128 | struct fb_var_screeninfo fbvar; |
129 | int ret, fd; |
130 | |
131 | fd = open(fbname, O_RDWR); |
132 | if (fd == -1) { |
133 | err_perror("open %s", fbname); |
134 | return -1; |
135 | } |
136 | |
137 | ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar); |
138 | close(fd); |
139 | |
140 | if (ret == -1) { |
141 | err_perror("ioctl %s", fbname); |
142 | return -1; |
143 | } |
144 | |
145 | if (fbvar.xres == 0 || fbvar.yres == 0) |
146 | return -1; |
147 | |
148 | *w = fbvar.xres; |
149 | *h = fbvar.yres; |
150 | return 0; |
151 | } |
152 | |
b9a19b44 |
153 | int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata) |
f641fccb |
154 | { |
f641fccb |
155 | int fb_id, overlay_id = -1, screen_id = -1; |
156 | char buff[64], screen_name[64]; |
b9a19b44 |
157 | const char *fbname; |
f641fccb |
158 | struct stat status; |
b9a19b44 |
159 | int fd, i, ret; |
160 | int w, h; |
f641fccb |
161 | FILE *f; |
162 | |
5f4b1fd3 |
163 | pdata->phys_w = pdata->phys_h = 0; |
164 | |
b9a19b44 |
165 | fbname = get_fb_device(); |
f641fccb |
166 | |
b9a19b44 |
167 | /* Figure out screen resolution, we need to know default resolution |
168 | * to report to SDL and for centering stuff. |
f641fccb |
169 | * The only way to achieve this seems to be walking some sysfs files.. */ |
170 | ret = stat(fbname, &status); |
171 | if (ret != 0) { |
7b66578c |
172 | err_perror("can't stat %s", fbname); |
b9a19b44 |
173 | goto skip_screen; |
f641fccb |
174 | } |
175 | fb_id = minor(status.st_rdev); |
176 | |
177 | snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id); |
178 | f = fopen(buff, "r"); |
179 | if (f == NULL) { |
7b66578c |
180 | err("can't open %s, skip screen detection", buff); |
f641fccb |
181 | goto skip_screen; |
182 | } |
183 | |
184 | ret = fscanf(f, "%d", &overlay_id); |
185 | fclose(f); |
186 | if (ret != 1) { |
7b66578c |
187 | err("can't parse %s, skip screen detection", buff); |
f641fccb |
188 | goto skip_screen; |
189 | } |
190 | |
191 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id); |
192 | ret = read_sysfs(buff, screen_name, sizeof(screen_name)); |
193 | if (ret < 0) { |
7b66578c |
194 | err("skip screen detection"); |
f641fccb |
195 | goto skip_screen; |
196 | } |
197 | |
198 | for (i = 0; ; i++) { |
199 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i); |
200 | ret = read_sysfs(buff, buff, sizeof(buff)); |
201 | if (ret < 0) |
202 | break; |
203 | |
204 | if (strcmp(screen_name, buff) == 0) { |
205 | screen_id = i; |
206 | break; |
207 | } |
208 | } |
209 | |
210 | if (screen_id < 0) { |
7b66578c |
211 | err("could not find screen"); |
f641fccb |
212 | goto skip_screen; |
213 | } |
214 | |
215 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id); |
216 | f = fopen(buff, "r"); |
217 | if (f == NULL) { |
7b66578c |
218 | err("can't open %s, skip screen detection", buff); |
f641fccb |
219 | goto skip_screen; |
220 | } |
221 | |
b9a19b44 |
222 | ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h); |
f641fccb |
223 | fclose(f); |
224 | if (ret != 2) { |
7b66578c |
225 | err("can't parse %s (%d), skip screen detection", buff, ret); |
f641fccb |
226 | goto skip_screen; |
227 | } |
228 | |
7b66578c |
229 | log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d", |
b9a19b44 |
230 | w, h, screen_name, screen_id, fb_id, overlay_id); |
231 | |
5f4b1fd3 |
232 | pdata->phys_w = w; |
233 | pdata->phys_h = h; |
b9a19b44 |
234 | return 0; |
f641fccb |
235 | |
236 | skip_screen: |
b9a19b44 |
237 | /* attempt to extract this from FB then */ |
34edc246 |
238 | ret = read_vscreeninfo(fbname, &pdata->phys_w, &pdata->phys_h); |
239 | if (ret != 0 && strcmp(fbname, "/dev/fb0") != 0) { |
240 | /* last resort */ |
241 | ret = read_vscreeninfo("/dev/fb0", &pdata->phys_w, &pdata->phys_h); |
b9a19b44 |
242 | } |
243 | |
34edc246 |
244 | if (ret != 0) { |
b9a19b44 |
245 | err("VSCREENINFO has nothing meaningful"); |
246 | return -1; |
247 | } |
248 | |
b9a19b44 |
249 | return 0; |
250 | } |
251 | |
252 | static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, |
0c7caf2b |
253 | const char *fbname, int width, int height, int bpp, int *buffer_count) |
b9a19b44 |
254 | { |
255 | int x = 0, y = 0, w = width, h = height; /* layer size and pos */ |
256 | int screen_w = w, screen_h = h; |
f151701d |
257 | int tmp_w, tmp_h; |
b9a19b44 |
258 | const char *tmp; |
f11c56a6 |
259 | int retval = -1; |
b9a19b44 |
260 | int ret, fd; |
261 | |
5f4b1fd3 |
262 | pdata->layer_x = pdata->layer_y = pdata->layer_w = pdata->layer_h = 0; |
263 | |
264 | if (pdata->phys_w != 0) |
265 | screen_w = pdata->phys_w; |
266 | if (pdata->phys_h != 0) |
267 | screen_h = pdata->phys_h; |
b9a19b44 |
268 | |
269 | fd = open(fbname, O_RDWR); |
270 | if (fd == -1) { |
271 | err_perror("open %s", fbname); |
272 | return -1; |
273 | } |
274 | |
275 | /* FIXME: assuming layer doesn't change here */ |
276 | if (pdata->saved_layer == NULL) { |
277 | struct omapfb_saved_layer *slayer; |
278 | slayer = calloc(1, sizeof(*slayer)); |
279 | if (slayer == NULL) |
f11c56a6 |
280 | goto out; |
b9a19b44 |
281 | |
282 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi); |
283 | if (ret != 0) { |
284 | err_perror("QUERY_PLANE"); |
f11c56a6 |
285 | goto out; |
b9a19b44 |
286 | } |
287 | |
288 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi); |
289 | if (ret != 0) { |
290 | err_perror("QUERY_MEM"); |
f11c56a6 |
291 | goto out; |
b9a19b44 |
292 | } |
293 | |
294 | pdata->saved_layer = slayer; |
295 | } |
296 | |
f641fccb |
297 | tmp = getenv("SDL_OMAP_LAYER_SIZE"); |
298 | if (tmp != NULL) { |
f641fccb |
299 | if (strcasecmp(tmp, "fullscreen") == 0) |
300 | w = screen_w, h = screen_h; |
f151701d |
301 | else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2) |
302 | w = tmp_w, h = tmp_h; |
f641fccb |
303 | else |
7b66578c |
304 | err("layer size specified incorrectly, " |
305 | "should be like 800x480"); |
f641fccb |
306 | } |
f11c56a6 |
307 | |
308 | /* the layer can't be set larger than screen */ |
309 | tmp_w = w, tmp_h = h; |
310 | if (w > screen_w) |
311 | w = screen_w; |
312 | if (h > screen_h) |
313 | h = screen_h; |
314 | if (w != tmp_w || h != tmp_h) |
315 | log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h); |
f641fccb |
316 | |
317 | x = screen_w / 2 - w / 2; |
318 | y = screen_h / 2 - h / 2; |
0c7caf2b |
319 | ret = osdl_setup_omapfb(fd, 1, x, y, w, h, |
320 | width * height * ((bpp + 7) / 8), buffer_count); |
5f4b1fd3 |
321 | if (ret == 0) { |
322 | pdata->layer_x = x; |
323 | pdata->layer_y = y; |
324 | pdata->layer_w = w; |
325 | pdata->layer_h = h; |
326 | } |
f641fccb |
327 | |
f11c56a6 |
328 | retval = ret; |
329 | out: |
330 | close(fd); |
331 | return retval; |
f641fccb |
332 | } |
333 | |
455c8c43 |
334 | void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, |
335 | int border_l, int border_r, int border_t, int border_b, |
0c7caf2b |
336 | int width, int height, int bpp, int *doublebuf) |
f641fccb |
337 | { |
0c7caf2b |
338 | int buffers_try, buffers_set; |
f641fccb |
339 | const char *fbname; |
455c8c43 |
340 | void *result; |
f641fccb |
341 | int ret; |
342 | |
b9a19b44 |
343 | fbname = get_fb_device(); |
f641fccb |
344 | |
345 | if (pdata->fbdev != NULL) { |
346 | vout_fbdev_finish(pdata->fbdev); |
347 | pdata->fbdev = NULL; |
348 | } |
349 | |
0c7caf2b |
350 | buffers_try = buffers_set = 1; |
351 | if (*doublebuf) |
352 | /* actually try tripple buffering for reduced chance of tearing */ |
353 | buffers_try = buffers_set = 3; |
354 | |
355 | ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp, &buffers_set); |
f641fccb |
356 | if (ret < 0) |
0c7caf2b |
357 | goto fail; |
f641fccb |
358 | |
0c7caf2b |
359 | pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, buffers_set); |
f641fccb |
360 | if (pdata->fbdev == NULL) |
0c7caf2b |
361 | goto fail; |
455c8c43 |
362 | |
363 | if (border_l | border_r | border_t | border_b) { |
364 | width -= border_l + border_r; |
365 | height -= border_t + border_b; |
366 | result = vout_fbdev_resize(pdata->fbdev, width, height, bpp, |
0c7caf2b |
367 | border_l, border_r, border_t, border_b, buffers_set); |
455c8c43 |
368 | } |
369 | else { |
370 | result = osdl_video_flip(pdata); |
371 | } |
0c7caf2b |
372 | if (result == NULL) |
373 | goto fail; |
f641fccb |
374 | |
f9b3f440 |
375 | if (!pdata->xenv_up) { |
e1837b2c |
376 | int xenv_mouse = 0; |
377 | ret = xenv_init(&xenv_mouse); |
378 | if (ret == 0) { |
f9b3f440 |
379 | pdata->xenv_up = 1; |
e1837b2c |
380 | pdata->xenv_mouse = xenv_mouse; |
381 | } |
f641fccb |
382 | } |
383 | |
0c7caf2b |
384 | if (buffers_try != buffers_set) { |
385 | log("only %d/%d buffers available, expect tearing\n", |
386 | buffers_set, buffers_try); |
387 | *doublebuf = buffers_set > 1; |
388 | } |
389 | |
455c8c43 |
390 | return result; |
0c7caf2b |
391 | |
392 | fail: |
393 | osdl_video_finish(pdata); |
394 | return NULL; |
f641fccb |
395 | } |
396 | |
397 | void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) |
398 | { |
52a1749b |
399 | void *ret; |
400 | |
f641fccb |
401 | if (pdata->fbdev == NULL) |
402 | return NULL; |
403 | |
52a1749b |
404 | ret = vout_fbdev_flip(pdata->fbdev); |
405 | |
5f4b1fd3 |
406 | if (pdata->cfg_force_vsync) |
f641fccb |
407 | vout_fbdev_wait_vsync(pdata->fbdev); |
408 | |
52a1749b |
409 | return ret; |
f641fccb |
410 | } |
411 | |
412 | void osdl_video_finish(struct SDL_PrivateVideoData *pdata) |
413 | { |
414 | static const char *fbname; |
415 | |
b9a19b44 |
416 | fbname = get_fb_device(); |
f641fccb |
417 | if (pdata->fbdev != NULL) { |
418 | vout_fbdev_finish(pdata->fbdev); |
419 | pdata->fbdev = NULL; |
420 | } |
421 | |
422 | /* restore the OMAP layer */ |
423 | if (pdata->saved_layer != NULL) { |
424 | struct omapfb_saved_layer *slayer = pdata->saved_layer; |
425 | int fd; |
426 | |
427 | fd = open(fbname, O_RDWR); |
428 | if (fd != -1) { |
429 | int enabled = slayer->pi.enabled; |
430 | |
431 | /* be sure to disable while setting up */ |
432 | slayer->pi.enabled = 0; |
433 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
434 | ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi); |
435 | if (enabled) { |
436 | slayer->pi.enabled = enabled; |
437 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
438 | } |
439 | close(fd); |
440 | } |
441 | free(slayer); |
442 | pdata->saved_layer = NULL; |
443 | } |
444 | |
f9b3f440 |
445 | if (pdata->xenv_up) { |
446 | xenv_finish(); |
447 | pdata->xenv_up = 0; |
f641fccb |
448 | } |
449 | } |
450 | |