.. -*- coding: utf-8; mode: rst -*- file: uapi/v4l/keytable.c ========================= .. code-block:: c /* keytable.c - This program allows checking/replacing keys at IR Copyright (C) 2006-2009 Mauro Carvalho Chehab This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include "parse.h" void prtcode (int *codes) { struct parse_key *p; for (p=keynames;p->name!=NULL;p++) { if (p->value == (unsigned)codes[1]) { printf("scancode 0x%04x = %s (0x%02x)\\n", codes[0], p->name, codes[1]); return; } } if (isprint (codes[1])) printf("scancode %d = '%c' (0x%02x)\\n", codes[0], codes[1], codes[1]); else printf("scancode %d = 0x%02x\\n", codes[0], codes[1]); } int parse_code(char *string) { struct parse_key *p; for (p=keynames;p->name!=NULL;p++) { if (!strcasecmp(p->name, string)) { return p->value; } } return -1; } int main (int argc, char *argv[]) { int fd; unsigned int i, j; int codes[2]; if (argc<2 || argc>4) { printf ("usage: %s to get table; or\\n" " %s \\n" " %s n",*argv,*argv,*argv); return -1; } if ((fd = open(argv[1], O_RDONLY)) < 0) { perror("Couldn't open input device"); return(-1); } if (argc==4) { int value; value=parse_code(argv[3]); if (value==-1) { value = strtol(argv[3], NULL, 0); if (errno) perror("value"); } codes [0] = (unsigned) strtol(argv[2], NULL, 0); codes [1] = (unsigned) value; if(ioctl(fd, EVIOCSKEYCODE, codes)) perror ("EVIOCSKEYCODE"); if(ioctl(fd, EVIOCGKEYCODE, codes)==0) prtcode(codes); return 0; } if (argc==3) { FILE *fin; int value; char *scancode, *keycode, s[2048]; fin=fopen(argv[2],"r"); if (fin==NULL) { perror ("opening keycode file"); return -1; } /* Clears old table */ for (j = 0; j < 256; j++) { for (i = 0; i < 256; i++) { codes[0] = (j << 8) | i; codes[1] = KEY_RESERVED; ioctl(fd, EVIOCSKEYCODE, codes); } } while (fgets(s,sizeof(s),fin)) { scancode=strtok(s,"\\n\\t =:"); if (!scancode) { perror ("parsing input file scancode"); return -1; } if (!strcasecmp(scancode, "scancode")) { scancode = strtok(NULL,"\\n\\t =:"); if (!scancode) { perror ("parsing input file scancode"); return -1; } } keycode=strtok(NULL,"\\n\\t =:("); if (!keycode) { perror ("parsing input file keycode"); return -1; } // printf ("parsing %s=%s:", scancode, keycode); value=parse_code(keycode); // printf ("\\tvalue=%d\\n",value); if (value==-1) { value = strtol(keycode, NULL, 0); if (errno) perror("value"); } codes [0] = (unsigned) strtol(scancode, NULL, 0); codes [1] = (unsigned) value; // printf("\\t%04x=%04x\\n",codes[0], codes[1]); if(ioctl(fd, EVIOCSKEYCODE, codes)) { fprintf(stderr, "Setting scancode 0x%04x with 0x%04x via ",codes[0], codes[1]); perror ("EVIOCSKEYCODE"); } if(ioctl(fd, EVIOCGKEYCODE, codes)==0) prtcode(codes); } return 0; } /* Get scancode table */ for (j = 0; j < 256; j++) { for (i = 0; i < 256; i++) { codes[0] = (j << 8) | i; if (!ioctl(fd, EVIOCGKEYCODE, codes) && codes[1] != KEY_RESERVED) prtcode(codes); } } return 0; }