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337 lines
6.7 KiB
337 lines
6.7 KiB
/* |
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in_evdev.c - linux evdev interface support |
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Copyright (C) 2015-2018 mittorn |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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*/ |
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#ifdef XASH_USE_EVDEV |
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#include <fcntl.h> |
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#include <errno.h> |
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#include <linux/input.h> |
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#include <dirent.h> |
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#include "common.h" |
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#include "input.h" |
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#include "client.h" |
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#include "vgui_draw.h" |
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#define MAX_EVDEV_DEVICES 5 |
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struct evdev_s |
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{ |
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int initialized, devices; |
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int fds[MAX_EVDEV_DEVICES]; |
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string paths[MAX_EVDEV_DEVICES]; |
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qboolean grab; |
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float grabtime; |
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float x, y; |
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} evdev; |
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int KeycodeFromEvdev(int keycode, int value); |
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static void Evdev_CheckPermissions() |
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{ |
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#ifdef __ANDROID__ |
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system( "su 0 chmod 664 /dev/input/event*" ); |
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#endif |
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} |
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void Evdev_Setup( void ) |
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{ |
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if( evdev.initialized ) |
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return; |
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#ifdef __ANDROID__ |
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system( "su 0 supolicy --live \"allow appdomain input_device dir { ioctl read getattr search open }\" \"allow appdomain input_device chr_file { ioctl read write getattr lock append open }\"" ); |
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system( "su 0 setenforce permissive" ); |
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#endif |
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evdev.initialized = true; |
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} |
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#define EV_HASBIT( x, y ) ( x[y / 32] & (1 << y % 32) ) |
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void Evdev_Autodetect_f( void ) |
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{ |
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int i; |
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DIR *dir; |
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struct dirent *entry; |
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Evdev_Setup(); |
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Evdev_CheckPermissions(); |
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if( !( dir = opendir( "/dev/input" ) ) ) |
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return; |
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while( ( entry = readdir( dir ) ) ) |
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{ |
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int fd; |
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string path; |
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uint types[EV_MAX] = {0}; |
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uint codes[( KEY_MAX - 1 ) / 32 + 1] = {0}; |
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qboolean hasbtnmouse; |
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if( evdev.devices >= MAX_EVDEV_DEVICES ) |
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continue; |
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Q_snprintf( path, MAX_STRING, "/dev/input/%s", entry->d_name ); |
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for( i = 0; i < evdev.devices; i++ ) |
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if( !Q_strncmp( evdev.paths[i], path, MAX_STRING ) ) |
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goto next; |
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if( Q_strncmp( entry->d_name, "event", 5 ) ) |
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continue; |
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fd = open( path, O_RDONLY | O_NONBLOCK ); |
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if( fd == -1 ) |
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continue; |
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ioctl( fd, EVIOCGBIT( 0, EV_MAX ), types ); |
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if( !EV_HASBIT( types, EV_KEY ) ) |
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goto close; |
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ioctl( fd, EVIOCGBIT( EV_KEY, KEY_MAX ), codes ); |
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if( EV_HASBIT( codes, KEY_LEFTCTRL ) && EV_HASBIT( codes, KEY_SPACE ) ) |
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goto open; |
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if( !EV_HASBIT( codes, BTN_MOUSE ) ) |
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goto close; |
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if( EV_HASBIT( types, EV_REL ) ) |
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{ |
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Q_memset( codes, 0, sizeof( codes ) ); |
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ioctl( fd, EVIOCGBIT( EV_REL, KEY_MAX ), codes ); |
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if( !EV_HASBIT( codes, REL_X ) ) |
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goto close; |
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if( !EV_HASBIT( codes, REL_Y ) ) |
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goto close; |
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if( !EV_HASBIT( codes, REL_WHEEL ) ) |
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goto close; |
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goto open; |
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} |
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goto close; |
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open: |
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Q_strncpy( evdev.paths[evdev.devices], path, MAX_STRING ); |
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evdev.fds[evdev.devices++] = fd; |
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Msg( "Opened device %s\n", path ); |
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goto next; |
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close: |
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close( fd ); |
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next: |
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continue; |
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} |
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closedir( dir ); |
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} |
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/* |
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=========== |
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Evdev_OpenDevice |
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For shitty systems that cannot provide relative mouse axes |
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=========== |
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*/ |
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void Evdev_OpenDevice ( const char *path ) |
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{ |
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int ret, i; |
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if ( evdev.devices >= MAX_EVDEV_DEVICES ) |
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{ |
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Msg( "Only %d devices supported!\n", MAX_EVDEV_DEVICES ); |
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return; |
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} |
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Evdev_Setup(); |
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Evdev_CheckPermissions(); // use root to grant access to evdev |
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for( i = 0; i < evdev.devices; i++ ) |
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{ |
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if( !Q_strncmp( evdev.paths[i], path, MAX_STRING ) ) |
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{ |
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Msg( "device %s already open!\n", path ); |
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return; |
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} |
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} |
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ret = open( path, O_RDONLY | O_NONBLOCK ); |
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if( ret < 0 ) |
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{ |
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Con_Reportf( S_ERROR "Could not open input device %s: %s\n", path, strerror( errno ) ); |
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return; |
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} |
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Msg( "Input device #%d: %s opened sucessfully\n", evdev.devices, path ); |
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evdev.fds[evdev.devices] = ret; |
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Q_strncpy( evdev.paths[evdev.devices++], path, MAX_STRING ); |
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} |
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void Evdev_OpenDevice_f( void ) |
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{ |
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if( Cmd_Argc() < 2 ) |
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Msg( S_USAGE "evdev_opendevice <path>\n" ); |
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Evdev_OpenDevice( Cmd_Argv( 1 ) ); |
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} |
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/* |
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=========== |
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Evdev_CloseDevice_f |
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=========== |
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*/ |
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void Evdev_CloseDevice_f ( void ) |
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{ |
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uint i; |
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char *arg; |
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if( Cmd_Argc() < 2 ) |
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return; |
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arg = Cmd_Argv( 1 ); |
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if( Q_isdigit( arg ) ) |
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i = Q_atoi( arg ); |
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else for( i = 0; i < evdev.devices; i++ ) |
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if( !Q_strncmp( evdev.paths[i], arg, MAX_STRING ) ) |
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break; |
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if( i >= evdev.devices ) |
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{ |
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Msg( "Device %s is not open\n", arg ); |
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return; |
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} |
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close( evdev.fds[i] ); |
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evdev.devices--; |
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Msg( "Device %s closed successfully\n", evdev.paths[i] ); |
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for( ; i < evdev.devices; i++ ) |
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{ |
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Q_strncpy( evdev.paths[i], evdev.paths[i+1], MAX_STRING ); |
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evdev.fds[i] = evdev.fds[i+1]; |
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} |
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} |
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void IN_EvdevFrame () |
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{ |
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int dx = 0, dy = 0, i; |
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for( i = 0; i < evdev.devices; i++ ) |
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{ |
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struct input_event ev; |
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while ( read( evdev.fds[i], &ev, 16) == 16 ) |
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{ |
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if ( ev.type == EV_REL ) |
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{ |
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switch ( ev.code ) |
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{ |
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case REL_X: dx += ev.value; |
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break; |
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case REL_Y: dy += ev.value; |
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break; |
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case REL_WHEEL: |
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if( ev.value > 0) |
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{ |
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Key_Event( K_MWHEELDOWN, 1 ); |
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Key_Event( K_MWHEELDOWN, 0 ); |
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} |
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else |
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{ |
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Key_Event( K_MWHEELUP, 1 ); |
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Key_Event( K_MWHEELUP, 0 ); |
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} |
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break; |
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} |
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} |
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else if ( ( ev.type == EV_KEY ) && cls.key_dest == key_game ) |
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{ |
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switch( ev.code ) |
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{ |
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case BTN_LEFT: |
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Key_Event( K_MOUSE1, ev.value ); |
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break; |
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case BTN_MIDDLE: |
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Key_Event( K_MOUSE3, ev.value ); |
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break; |
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case BTN_RIGHT: |
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Key_Event( K_MOUSE2, ev.value ); |
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break; |
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default: |
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Key_Event ( KeycodeFromEvdev( ev.code, ev.value ) , ev.value); |
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} |
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} |
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} |
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if( evdev.grab && evdev.grabtime <= host.realtime ) |
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{ |
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ioctl( evdev.fds[i], EVIOCGRAB, (void*) 1 ); |
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Key_ClearStates(); |
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} |
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if( m_ignore->integer ) |
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continue; |
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evdev.x += -dx * m_yaw->value; |
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evdev.y += dy * m_pitch->value; |
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} |
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if( evdev.grabtime <= host.realtime ) |
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evdev.grab = false; |
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} |
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void Evdev_SetGrab( qboolean grab ) |
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{ |
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int i; |
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if( grab ) |
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{ |
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Key_Event( K_ESCAPE, 0 ); //Do not leave ESC down |
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evdev.grabtime = host.realtime + 0.5; |
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Key_ClearStates(); |
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} |
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else |
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{ |
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for( i = 0; i < evdev.devices; i++ ) |
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ioctl( evdev.fds[i], EVIOCGRAB, (void*) 0 ); |
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} |
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evdev.grab = grab; |
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} |
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void IN_EvdevMove( float *yaw, float *pitch ) |
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{ |
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*yaw += evdev.x; |
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*pitch += evdev.y; |
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evdev.x = evdev.y = 0.0f; |
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} |
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void Evdev_Init( void ) |
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{ |
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Cmd_AddCommand ("evdev_open", Evdev_OpenDevice_f, "Open event device"); |
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Cmd_AddCommand ("evdev_close", Evdev_CloseDevice_f, "Close event device"); |
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Cmd_AddCommand ("evdev_autodetect", Evdev_Autodetect_f, "Automaticly open mouses and keyboards"); |
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} |
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void Evdev_Shutdown( void ) |
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{ |
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Cmd_RemoveCommand( "evdev_open" ); |
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Cmd_RemoveCommand( "evdev_close" ); |
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Cmd_RemoveCommand( "evdev_autodetect" ); |
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} |
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#endif // XASH_USE_EVDEV
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