2 * (C) GraÅžvydas "notaz" Ignotas, 2011
4 * This work is licensed under the terms of any of these licenses
6 * - GNU GPL, version 2 or later.
7 * - GNU LGPL, version 2.1 or later.
8 * See the COPYING file in the top-level directory.
15 #include "plugin_lib.h"
16 #include "pl_gun_ts.h"
18 #include "../plugins/dfinput/main.h"
20 static int gun_x, gun_y, gun_in;
21 static int ts_multiplier_x, ts_multiplier_y, ts_offs_x, ts_offs_y;
22 static int (*pts_read)(struct tsdev *dev, struct ts_sample *sample, int nr);
24 #define limit(v, min, max) \
25 if (v < min) v = min; \
26 else if (v > max) v = max
28 void pl_gun_ts_update(struct tsdev *ts, int *x, int *y, int *in)
30 struct ts_sample sample;
31 int sx = 0, sy = 0, sp = 0, updated = 0;
34 while (pts_read(ts, &sample, 1) > 0) {
42 gun_x = (sx - ts_offs_x) * ts_multiplier_x >> 10;
43 gun_y = (sy - ts_offs_y) * ts_multiplier_y >> 10;
44 limit(gun_x, 0, 1023);
45 limit(gun_y, 0, 1023);
46 if (sp && !(g_opts & OPT_TSGUN_NOTRIGGER))
47 gun_in |= GUNIN_TRIGGER;
49 gun_in &= ~GUNIN_TRIGGER;
55 *in = gun_in | in_state_gun;
58 void pl_set_gun_rect(int x, int y, int w, int h)
62 ts_multiplier_x = (1<<20) / w;
63 ts_multiplier_y = (1<<20) / h;
66 struct tsdev *pl_gun_ts_init(void)
68 struct tsdev *(*pts_open)(const char *dev_name, int nonblock) = NULL;
69 int (*pts_config)(struct tsdev *) = NULL;
70 int (*pts_close)(struct tsdev *) = NULL;
71 const char *tsdevname;
75 tsdevname = getenv("TSLIB_TSDEVICE");
76 if (tsdevname == NULL)
77 tsdevname = "/dev/input/touchscreen0";
79 // avoid hard dep on tslib
80 ltsh = dlopen("/usr/lib/libts-1.0.so.0", RTLD_LAZY);
82 ltsh = dlopen("/usr/lib/libts-0.0.so.0", RTLD_LAZY);
84 fprintf(stderr, "%s\n", dlerror());
88 pts_open = dlsym(ltsh, "ts_open");
89 pts_config = dlsym(ltsh, "ts_config");
90 pts_read = dlsym(ltsh, "ts_read");
91 pts_close = dlsym(ltsh, "ts_close");
92 if (pts_open == NULL || pts_config == NULL || pts_read == NULL || pts_close == NULL) {
93 fprintf(stderr, "%s\n", dlerror());
97 ts = pts_open(tsdevname, 1);
100 if (pts_config(ts) != 0)
103 // FIXME: we should be able to get this somewhere
104 // the problem is this doesn't always match resolution due to different display modes
105 #ifdef __ARM_ARCH_7A__
106 pl_set_gun_rect(0, 0, 800, 480);
108 pl_set_gun_rect(0, 0, 320, 240);
119 fprintf(stderr, "Could not open touchscreen\n");