Add gen_keytables.pl to automatically generate IR keycodes and improved keytable

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Keytable is now a 3 in 1 script:
        calling with one argument, it reads keytable from a IR device
        calling with two arguments, it writes a keytable at a IR device
        calling with three arguments, it allows changing just one keymap

Of course, it is generic enough to work also with other event devices.

gen_keytables.pl will generate keyboard mappings, as defined at kernel module.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 140 insertions, 15 deletions

diff --git a/v4l2-apps/util/Makefile b/v4l2-apps/util/Makefile
index 8c0277a6a..7d497c82b 100644
--- a/v4l2-apps/util/Makefile
+++ b/v4l2-apps/util/Makefile
@@ -20,3 +20,21 @@ qv4l2:
 install:
 
 include ../Make.rules
+
+parse.h: /usr/include/linux/input.h
+	@echo generating parse.h
+	@echo -en "struct parse_key {\n\tchar *name;\n\tunsigned int value;\n} " >parse.h
+	@echo -en "keynames[] = {\n" >>parse.h
+
+	@more /usr/include/linux/input.h |perl -n \
+	-e 'if (m/^\#define\s+(KEY_[^\s]+)\s+(0x[\d\w]+|[\d]+)/) ' \
+	-e '{ printf "\t{\"%s\", %s},\n",$$1,$$2; }' \
+	-e 'if (m/^\#define\s+(BTN_[^\s]+)\s+(0x[\d\w]+|[\d]+)/) ' \
+	-e '{ printf "\t{\"%s\", %s},\n",$$1,$$2; }' \
+	>> parse.h
+	@echo -en "\t{ NULL, 0}\n};\n" >>parse.h
+
+keytables:
+	./gen_keytables.pl ../../v4l/ir-keymaps.c
+
+keytable: keytable.c parse.h keytables
diff --git a/v4l2-apps/util/gen_keytables.pl b/v4l2-apps/util/gen_keytables.pl
new file mode 100755
index 000000000..f183ab4d1
--- /dev/null
+++ b/v4l2-apps/util/gen_keytables.pl
@@ -0,0 +1,26 @@
+#!/usr/bin/perl
+use strict;
+
+my $keyname="";
+while (<>) {
+#IR_KEYTAB_TYPE ir_codes_proteus_2309[IR_KEYTAB_SIZE] = {
+	if (m/IR_KEYTAB_TYPE\s+(\w[\w\d_]+)/) {
+		$keyname = $1;
+		$keyname =~ s/^ir_codes_//;
+
+		print "Generating keycodes/$keyname\n";
+		open OUT, ">keycodes/$keyname";
+		next;
+	}
+	if ($keyname ne "") {
+		if (m/(0x[\d\w]+).*(KEY_[^\s\,]+)/) {
+			printf OUT "%s %s\n",$1, $2;
+			next;
+		}
+		if (m/\}/) {
+			close OUT;
+			$keyname="";
+			next;
+		}
+	}
+}
diff --git a/v4l2-apps/util/keytable.c b/v4l2-apps/util/keytable.c
index f908f6065..93aa8973c 100644
--- a/v4l2-apps/util/keytable.c
+++ b/v4l2-apps/util/keytable.c
@@ -13,12 +13,16 @@
  */
 
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <linux/input.h>
 #include <sys/ioctl.h>
 
+#include "parse.h"
+
 void prtcode (int *codes)
 {
 	if (isprint (codes[1]))
@@ -27,41 +31,118 @@ void prtcode (int *codes)
 		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;
 	int codes[2];
 
-	if (argc!=2 && argc!=4) {
+	if (argc<2 || argc>4) {
 		printf ("usage: %s <device> to get table; or\n"
-			"       %s <device> <scancode> <keycode>\n",*argv,*argv);
+			"       %s <device> <scancode> <keycode>\n"
+			"       %s <device> <keycode_file>\n",*argv,*argv,*argv);
 		return -1;
 	}
 
-        if ((fd = open(argv[1], O_RDONLY)) < 0) {
-                perror("Couldn't open input device");
-                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;
+		}
 
-	if (argc==2) {
-		/* Get scancode table */
+		/* Clears old table */
 		for (i=0;i<256;i++) {
 			codes[0] = i;
+			codes[1] = 0;
+			ioctl(fd, EVIOCSKEYCODE, codes);
+		}
+
+		while (fgets(s,sizeof(s),fin)) {
+			scancode=strtok(s,"\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;
+
+			if(ioctl(fd, EVIOCSKEYCODE, codes))
+				perror ("EVIOCSKEYCODE");
+
 			if(ioctl(fd, EVIOCGKEYCODE, codes)==0)
 				prtcode(codes);
-//			else perror ("EVIOGCKEYCODE");
 		}
-	} else {
-		codes[0] = (unsigned) strtol(argv[2], NULL, 0);
-		codes[1] = (unsigned) strtol(argv[3], NULL, 0);
-
-		if(ioctl(fd, EVIOCSKEYCODE, codes))
-			perror ("EVIOCSKEYCODE");
+		return 0;
+	}
 
+	/* Get scancode table */
+	for (i=0;i<256;i++) {
+		codes[0] = i;
 		if(ioctl(fd, EVIOCGKEYCODE, codes)==0)
 			prtcode(codes);
 	}
 
 	return 0;
 }
+