mirror of
https://github.com/w23/xash3d-fwgs
synced 2024-12-16 22:20:01 +01:00
479 lines
10 KiB
C
479 lines
10 KiB
C
/*
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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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#include "platform/platform.h"
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#ifdef XASH_USE_EVDEV
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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 <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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#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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double grabtime;
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float x, y;
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qboolean chars;
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qboolean shift;
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} evdev;
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static convar_t *evdev_keydebug;
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static int KeycodeFromEvdev(int keycode, int value)
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{
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switch (keycode) {
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case KEY_0: return '0';
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case KEY_1: return '1';
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case KEY_2: return '2';
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case KEY_3: return '3';
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case KEY_4: return '4';
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case KEY_5: return '5';
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case KEY_6: return '6';
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case KEY_7: return '7';
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case KEY_8: return '8';
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case KEY_9: return '9';
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case KEY_BACKSPACE: return K_BACKSPACE;
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case KEY_ENTER: return K_ENTER;
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case KEY_ESC: return K_ESCAPE;
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case KEY_KP0: return K_KP_INS;
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case KEY_KP1: return K_KP_END;
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case KEY_KP2: return K_KP_DOWNARROW;
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case KEY_KP3: return K_KP_PGDN;
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case KEY_KP4: return K_KP_LEFTARROW;
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case KEY_KP5: return K_KP_5;
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case KEY_KP6: return K_KP_RIGHTARROW;
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case KEY_KP7: return K_KP_HOME;
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case KEY_KP8: return K_KP_UPARROW;
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case KEY_KP9: return K_KP_PGUP;
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case KEY_KPDOT: return K_KP_DEL;
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case KEY_KPENTER: return K_KP_ENTER;
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case KEY_Q: return 'q';
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case KEY_W: return 'w';
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case KEY_E: return 'e';
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case KEY_R: return 'r';
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case KEY_T: return 't';
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case KEY_Y: return 'y';
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case KEY_U: return 'u';
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case KEY_I: return 'i';
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case KEY_O: return 'o';
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case KEY_P: return 'p';
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case KEY_A: return 'a';
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case KEY_S: return 's';
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case KEY_D: return 'd';
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case KEY_F: return 'f';
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case KEY_G: return 'g';
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case KEY_H: return 'h';
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case KEY_J: return 'j';
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case KEY_K: return 'k';
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case KEY_L: return 'l';
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case KEY_Z: return 'z';
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case KEY_X: return 'x';
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case KEY_C: return 'c';
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case KEY_V: return 'v';
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case KEY_B: return 'b';
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case KEY_N: return 'n';
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case KEY_M: return 'm';
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case KEY_LEFTBRACE: return '[';
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case KEY_RIGHTBRACE: return ']';
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case KEY_MINUS: return '-';
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case KEY_EQUAL: return '=';
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case KEY_TAB: return K_TAB;
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case KEY_SEMICOLON: return ';';
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case KEY_APOSTROPHE: return '\'';
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case KEY_GRAVE: return '`';
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case KEY_BACKSLASH: return '\\';
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case KEY_COMMA: return ',';
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case KEY_DOT: return '.';
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case KEY_SLASH: return '/';
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case KEY_SPACE: return K_SPACE;
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case KEY_KPASTERISK: return '*';
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case KEY_RIGHTCTRL:
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case KEY_LEFTCTRL:
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return K_CTRL;
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case KEY_RIGHTSHIFT:
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case KEY_LEFTSHIFT:
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return K_SHIFT;
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case KEY_LEFT: return K_LEFTARROW;
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case KEY_RIGHT: return K_RIGHTARROW;
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case KEY_UP: return K_UPARROW;
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case KEY_DOWN: return K_DOWNARROW;
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case BTN_LEFT: return K_MOUSE1;
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case BTN_RIGHT: return K_MOUSE2;
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case BTN_MIDDLE: return K_MOUSE3;
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case KEY_POWER: return K_ESCAPE;
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case KEY_VOLUMEDOWN: return K_PGDN;
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case KEY_VOLUMEUP: return K_PGUP;
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case KEY_PLAYPAUSE: return K_ENTER;
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default:
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break;
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}
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return 0;
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}
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static void Evdev_CheckPermissions( void )
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{
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#if XASH_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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#if XASH_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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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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Con_Printf( "Opened device %s\n", path );
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#if XASH_INPUT == INPUT_EVDEV
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if( Sys_CheckParm( "-grab" ) )
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ioctl( evdev.fds[i], EVIOCGRAB, (void*) 1 );
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#endif
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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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Con_Printf( "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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Con_Printf( "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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Con_Printf( "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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#if XASH_INPUT == INPUT_EVDEV
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if( Sys_CheckParm( "-grab" ) )
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ioctl( evdev.fds[i], EVIOCGRAB, (void*) 1 );
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#endif
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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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Con_Printf( 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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const 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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Con_Printf( "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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Con_Printf( "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 ( void )
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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 || XASH_INPUT == INPUT_EVDEV ) )
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{
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int key = KeycodeFromEvdev( ev.code, ev.value );
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if( CVAR_TO_BOOL(evdev_keydebug) )
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Con_Printf( "key %d %d %d\n", ev.code, key, ev.value );
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Key_Event( key , ev.value );
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if( evdev.chars && ev.value )
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{
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if( key >= 32 && key < 127 )
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{
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if( evdev.shift )
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{
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key = Key_ToUpper( key );
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}
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CL_CharEvent( key );
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}
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}
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if( key == K_SHIFT )
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evdev.shift = ev.value;
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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( CVAR_TO_BOOL(m_ignore) )
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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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// grab only if evdev is secondary input source
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#if XASH_INPUT != INPUT_EVDEV
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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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#endif
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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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#if XASH_INPUT == INPUT_EVDEV
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void Platform_EnableTextInput( qboolean enable )
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{
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evdev.chars = enable;
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evdev.shift = false;
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}
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void Platfrom_MouseMove( float *yaw, float *pitch )
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{
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// already catched in IN_EvdevMove
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}
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#endif
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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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#if XASH_INPUT == INPUT_EVDEV
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Evdev_Autodetect_f();
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#endif
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}
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void Evdev_Shutdown( void )
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{
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int i;
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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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evdev_keydebug = Cvar_Get( "evdev_keydebug", "0", 0, "print key events to console" );
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for( i = 0; i < evdev.devices; i++ )
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{
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ioctl( evdev.fds[i], EVIOCGRAB, (void*) 0 );
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close( evdev.fds[i] );
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evdev.fds[i] = -1;
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}
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evdev.devices = 0;
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}
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#endif // XASH_USE_EVDEV
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