Mercurial > remote-gamepad-server

comparison uinput.c @ 0:e70ea46d6073

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial import from http://wouhanegaine.free.fr/dev/DSPad02b_neo07.zip
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 22 Feb 2015 01:38:06 +0100
parents
children f362b20de51e
comparison
equal deleted inserted replaced
-1:000000000000 0:e70ea46d6073
1 #include "uinput.h"
2 #include "ds.h"
3 #include "service.h"
4
5 #include <stdio.h>
6 #include <fcntl.h>
7 #include <string.h>
8 #include <sys/ioctl.h>
9 #include <unistd.h>
10 #include <stdbool.h>
11
12
13 #define DS_NAME "NintendoDS Wireless Gamepad"
14
15 /* Not found these values... but it's not important! */
16 #define DS_VENDOR 0xdead
17 #define DS_PRODUCT 0xbeef
18 #define DS_VERSION 0x00
19
20
21
22 /*
23 Create a new uinput device
24 Returns: file descriptor (-1 if error)
25 */
26 int init_uinput_device(void){
27 struct uinput_user_dev dev;
28 int fd = -1;
29
30 if(uinput_dev == NULL){
31 fd = open("/dev/uinput", O_RDWR);
32
33 if(fd < 0)
34 fd = open("/dev/misc/uinput", O_RDWR);
35
36 if(fd < 0)
37 fd = open("/dev/input/uinput", O_RDWR);
38 }
39 else fd = open(uinput_dev, O_RDWR); //from xml
40
41 if(fd < 0){
42 fprintf(stderr, " [%d] Unable to open uinput device ; hint: 'modprobe uinput' ?!\n", curdev);
43 return -1;
44 }
45
46
47
48 memset(&dev, 0, sizeof(dev));
49 strncpy(dev.name, DS_NAME, UINPUT_MAX_NAME_SIZE);
50 dev.id.bustype = 0;
51 dev.id.vendor = DS_VENDOR;
52 dev.id.product = DS_PRODUCT;
53 dev.id.version = DS_VERSION;
54
55 dev.absmax[ABS_X] = DS_MAX_X;
56 dev.absmin[ABS_X] = DS_MIN_X;
57 dev.absfuzz[ABS_X] = 4;
58 dev.absflat[ABS_X] = 2;
59
60 dev.absmax[ABS_Y] = DS_MAX_Y;
61 dev.absmin[ABS_Y] = DS_MIN_Y;
62 dev.absfuzz[ABS_X] = 4;
63 dev.absflat[ABS_X] = 2;
64
65
66 if(write(fd, &dev, sizeof(dev)) < (ssize_t)sizeof(dev)){
67 fprintf(stderr, " [%d] Registering device at uinput failed\n", curdev);
68 return -1;
69 }
70
71 /* Keys [01] (found in <linux/input.h>) */
72 if( ioctl(fd, UI_SET_EVBIT, EV_KEY) ) return -1;
73 if( ioctl(fd, UI_SET_KEYBIT, BTN_A) ) return -1;
74 if( ioctl(fd, UI_SET_KEYBIT, BTN_B) ) return -1;
75 if( ioctl(fd, UI_SET_KEYBIT, BTN_X) ) return -1;
76 if( ioctl(fd, UI_SET_KEYBIT, BTN_Y) ) return -1;
77 if( ioctl(fd, UI_SET_KEYBIT, BTN_TL) ) return -1;
78 if( ioctl(fd, UI_SET_KEYBIT, BTN_TR) ) return -1;
79 if( ioctl(fd, UI_SET_KEYBIT, BTN_START) ) return -1;
80 if( ioctl(fd, UI_SET_KEYBIT, BTN_SELECT)) return -1;
81
82 /* D-Pad [-0xFFFF - 0xFFFF] */
83 if( ioctl(fd, UI_SET_EVBIT, EV_ABS) ) return -1;
84 if( ioctl(fd, UI_SET_ABSBIT, ABS_X) ) return -1;
85 if( ioctl(fd, UI_SET_ABSBIT, ABS_Y) ) return -1;
86
87
88 /* Register device */
89 if( ioctl(fd, UI_DEV_CREATE) ) return -1;
90
91 return fd;
92 }
93
94
95 /*
96 Send an event into the uinput device
97 Returns: TRUE, FALSE
98 */
99 int do_uinput(int fd, unsigned short key, int pressed, unsigned short event_type){
100 struct input_event event;
101 memset(&event, 0 , sizeof(event));
102
103 event.type = event_type;
104 event.code = key;
105 event.value = pressed;
106
107 if(write(fd,&event,sizeof(event)) != sizeof(event)){
108 fprintf(stderr, " [%d] Writing event to uinput driver failed ; Aborting\n", curdev);
109 return false;
110 }
111 return true;
112 }
113
114
115 /*
116 Synchonize events
117 */
118 void flush_uinput(int fd){
119 struct input_event event;
120 memset(&event, 0 , sizeof(event));
121
122 event.type = EV_SYN;
123 event.code = SYN_REPORT;
124
125 if(fd){
126 if(write(fd, &event, sizeof(event) != sizeof(event)))
127 fprintf(stderr, " [%d] Flushing uinput failed\n", curdev);
128 }
129 }
130
131
132
133
134