![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
The V4L and DVB API's are there for a long time. however, up to now, no efforts were done to merge them to kernel DocBook. This patch adds the current versions of the specs as an unique compendium. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
173 lines
5.7 KiB
XML
173 lines
5.7 KiB
XML
<programlisting>
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/* keytable.c - This program allows checking/replacing keys at IR
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Copyright (C) 2006-2009 Mauro Carvalho Chehab <mchehab@infradead.org>
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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, version 2 of the License.
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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 <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <linux/input.h>
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#include <sys/ioctl.h>
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#include "parse.h"
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void prtcode (int *codes)
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{
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struct parse_key *p;
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for (p=keynames;p->name!=NULL;p++) {
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if (p->value == (unsigned)codes[1]) {
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printf("scancode 0x%04x = %s (0x%02x)\n", codes[0], p->name, codes[1]);
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return;
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}
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}
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if (isprint (codes[1]))
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printf("scancode %d = '%c' (0x%02x)\n", codes[0], codes[1], codes[1]);
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else
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printf("scancode %d = 0x%02x\n", codes[0], codes[1]);
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}
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int parse_code(char *string)
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{
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struct parse_key *p;
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for (p=keynames;p->name!=NULL;p++) {
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if (!strcasecmp(p->name, string)) {
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return p->value;
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}
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}
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return -1;
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}
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int main (int argc, char *argv[])
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{
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int fd;
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unsigned int i, j;
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int codes[2];
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if (argc<2 || argc>4) {
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printf ("usage: %s <device> to get table; or\n"
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" %s <device> <scancode> <keycode>\n"
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" %s <device> <keycode_file>\n",*argv,*argv,*argv);
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return -1;
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}
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if ((fd = open(argv[1], O_RDONLY)) < 0) {
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perror("Couldn't open input device");
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return(-1);
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}
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if (argc==4) {
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int value;
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value=parse_code(argv[3]);
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if (value==-1) {
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value = strtol(argv[3], NULL, 0);
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if (errno)
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perror("value");
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}
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codes [0] = (unsigned) strtol(argv[2], NULL, 0);
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codes [1] = (unsigned) value;
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if(ioctl(fd, EVIOCSKEYCODE, codes))
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perror ("EVIOCSKEYCODE");
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if(ioctl(fd, EVIOCGKEYCODE, codes)==0)
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prtcode(codes);
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return 0;
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}
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if (argc==3) {
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FILE *fin;
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int value;
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char *scancode, *keycode, s[2048];
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fin=fopen(argv[2],"r");
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if (fin==NULL) {
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perror ("opening keycode file");
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return -1;
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}
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/* Clears old table */
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for (j = 0; j < 256; j++) {
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for (i = 0; i < 256; i++) {
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codes[0] = (j << 8) | i;
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codes[1] = KEY_RESERVED;
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ioctl(fd, EVIOCSKEYCODE, codes);
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}
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}
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while (fgets(s,sizeof(s),fin)) {
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scancode=strtok(s,"\n\t =:");
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if (!scancode) {
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perror ("parsing input file scancode");
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return -1;
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}
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if (!strcasecmp(scancode, "scancode")) {
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scancode = strtok(NULL,"\n\t =:");
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if (!scancode) {
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perror ("parsing input file scancode");
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return -1;
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}
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}
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keycode=strtok(NULL,"\n\t =:(");
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if (!keycode) {
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perror ("parsing input file keycode");
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return -1;
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}
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// printf ("parsing %s=%s:", scancode, keycode);
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value=parse_code(keycode);
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// printf ("\tvalue=%d\n",value);
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if (value==-1) {
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value = strtol(keycode, NULL, 0);
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if (errno)
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perror("value");
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}
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codes [0] = (unsigned) strtol(scancode, NULL, 0);
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codes [1] = (unsigned) value;
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// printf("\t%04x=%04x\n",codes[0], codes[1]);
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if(ioctl(fd, EVIOCSKEYCODE, codes)) {
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fprintf(stderr, "Setting scancode 0x%04x with 0x%04x via ",codes[0], codes[1]);
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perror ("EVIOCSKEYCODE");
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}
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if(ioctl(fd, EVIOCGKEYCODE, codes)==0)
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prtcode(codes);
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}
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return 0;
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}
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/* Get scancode table */
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for (j = 0; j < 256; j++) {
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for (i = 0; i < 256; i++) {
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codes[0] = (j << 8) | i;
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if (!ioctl(fd, EVIOCGKEYCODE, codes) && codes[1] != KEY_RESERVED)
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prtcode(codes);
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}
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}
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return 0;
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}
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</programlisting>
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