166 lines
2.6 KiB
C
166 lines
2.6 KiB
C
/*
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* piano.c - a piano emulator
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*/
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static const char rcsid[] =
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"$FreeBSD$";
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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 <curses.h>
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#include <unistd.h>
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#include <sys/file.h>
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char *myname;
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int verbose;
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static char *initcmd = "t160 o1 l16 ml";
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static const char usage_msg[] =
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"simple keyboard player V0.8086\n"
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"usage: %s [-v][-i str]\n"
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"\t-i str defaults 't160 o1 l16 ml'\n"
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"function: play by console keyboard\n"
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"\tESC to exit. Note keys are ...\n"
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"\t1 2 4 5 7 8 9 - = \\\n"
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"\t Q W E R T Y U I O P [ ]\n"
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;
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struct kdef_t {
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int ch;
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char *str;
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};
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static char *kstr[256];
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static struct kdef_t kdef[] = {
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/* white key */
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{ '\t', "<g>" },
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{ 'q', "<a>" },
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{ 'w', "<b>" },
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{ 'e', "c" },
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{ 'r', "d" },
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{ 't', "e" },
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{ 'y', "f" },
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{ 'u', "g" },
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{ 'i', "a" },
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{ 'o', "b" },
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{ 'p', ">c<" },
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{ '[', ">d<" },
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{ ']', ">e<" },
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{ '\n', ">f<" },
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{ '\r', ">f<" },
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/* black key */
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{ '`', "<f#>" },
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{ '1', "<g#>" },
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{ '2', "<a#>" },
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/*{ '3', "<b#>" },*/
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{ '4', "c#" },
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{ '5', "d#" },
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/*{ '6', "e#" },*/
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{ '7', "f#" },
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{ '8', "g#" },
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{ '9', "a#" },
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/*{ '0', "b#" },*/
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{ '-', ">c#<" },
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{ '=', ">d#<" },
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/*{ '\', ">e#<" },*/
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{ '\177', ">f#<" },
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{ '\0', NULL }
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};
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static int
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init_kstr(void)
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{
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struct kdef_t *mv = kdef;
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while (mv->str != NULL) {
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kstr[mv->ch] = mv->str;
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mv++;
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}/* while */
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return 0;
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}/* init_kstr */
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static int
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fdputs(const char *s, int fd, int echo)
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{
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int err, len = strlen(s);
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write(fd, s, len);
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err = write(fd, "\n", 1);
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if (echo) {
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fputs(s, stdout);
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}
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return err;
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}/* fdputs */
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static int
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outspkr(const char *s)
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{
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int err = -1, fd = open("/dev/speaker", O_WRONLY);
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if (fd >= 0) {
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fdputs(initcmd, fd, 0);
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err = fdputs(s, fd, verbose);
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close(fd);
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}
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return err;
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}/* outspkr */
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static int
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nain(void)
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{
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int ch;
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initscr();
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noecho();
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nonl();
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raw();
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init_kstr();
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while ((ch = getch()) != '\033') {
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if (kstr[ch] != NULL) {
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outspkr(kstr[ch]);
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}
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else {
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if (verbose) {
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switch (ch) {
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case ' ':
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fputs(" ", stdout);
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break;
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case '\b':
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fputs("\b", stdout);
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break;
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}/* switch */
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}
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}
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}/* while */
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endwin();
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return 0;
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}/* nain */
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int
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main(int argc, char *argv[])
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{
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int ch, ex, show_usage = 0;
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myname = argv[0];
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while ((ch = getopt(argc, argv, "-vi:")) != -1) {
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switch (ch) {
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default:
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case 'V':
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show_usage++;
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break;
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case 'v':
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verbose++;
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break;
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case 'i':
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initcmd = optarg;
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break;
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}/* switch */
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}/* while */
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ex = 1;
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if (show_usage) {
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fprintf(stderr, usage_msg, myname);
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}
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else {
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printf("Type ESC to exit.\n");
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ex = 0;
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nain();
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}
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return ex;
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}/* main */
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