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annotate uinput.c @ 0:e70ea46d6073

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