non-X mixer, useful into rc.local

svn path=/cvs2svn/branches/craig_metz/; revision=6448

usr.sbin/mixer/Makefile

@@ -0,0 +1,6 @@
+# $Id$
+
+PROG = mixer
+NOMAN = noman
+
+.include <bsd.prog.mk>

usr.sbin/mixer/mixer.c

@@ -0,0 +1,154 @@
+/*
+ *	This is an example of a mixer program for Linux
+ *
+ *	updated 1/1/93 to add stereo, level query, broken
+ *      	devmask kludge - cmetz@thor.tjhsst.edu 
+ *
+ * (C) Craig Metz and Hannu Savolainen 1993.
+ *
+ * You may do anything you wish with this program.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+#ifdef __FreeBSD__
+#include <machine/soundcard.h>
+#else
+#include <sys/soundcard.h>
+#endif
+
+char *names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
+
+int devmask = 0, recmask = 0, recsrc = 0;
+
+void usage(void)
+{
+	int i, n = 0;
+	printf("Usage: mixer { ");
+
+	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) 
+		if ((1 << i) & devmask)  {
+			if (n)
+				putchar('|');
+			printf(names[i]);
+			n = 1;
+		} 
+	printf(" } <value>\n  or   mixer { +rec|-rec } <devicename>\n");
+	exit(1);
+}
+
+void print_recsrc(void)
+{
+	int i, n = 0;
+	fprintf(stderr, "Recording source: ");
+
+	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+		if ((1 << i) & recsrc) {
+			if (n)
+				fprintf(stderr, ", ");
+			fprintf(stderr, names[i]);
+			n = 1;
+		}
+	fprintf(stderr, "\n");
+}
+
+int 
+main(int argc, char *argv[])
+{
+	int foo, bar, baz, dev;
+
+	char name[30] = "/dev/mixer";
+
+	if (!strcmp(argv[0], "mixer2"))
+	   strcpy(name, "/dev/mixer1");
+	else
+	  if (!strcmp(argv[0], "mixer3"))
+	     strcpy(name, "/dev/mixer2");
+
+	if ((baz = open(name, O_RDWR)) < 0) {
+		perror(name);
+		exit(1);
+	}
+	if (ioctl(baz, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
+		perror("SOUND_MIXER_READ_DEVMASK");
+		exit(-1);
+	}
+	if (ioctl(baz, SOUND_MIXER_READ_RECMASK, &recmask) == -1) {
+		perror("SOUND_MIXER_READ_RECMASK");
+		exit(-1);
+	}
+	if (ioctl(baz, SOUND_MIXER_READ_RECSRC, &recsrc) == -1) {
+		perror("SOUND_MIXER_READ_RECSRC");
+		exit(-1);
+	}
+
+	switch (argc) {
+		case 3:
+			bar = 1;
+			break;
+		case 2:
+			bar = 0;
+			break;
+		default:
+			usage();
+	}
+
+	for (foo = 0; foo < SOUND_MIXER_NRDEVICES && strcmp(names[foo], argv[1]); foo++);
+
+	if (foo >= SOUND_MIXER_NRDEVICES) {
+
+		if (!strcmp("+rec", argv[1]) || !strcmp("-rec", argv[1])) {
+			for (dev = 0; dev < SOUND_MIXER_NRDEVICES && strcmp(names[dev], argv[2]); dev++);
+			if (dev >= SOUND_MIXER_NRDEVICES)
+				usage();
+
+			if (!((1 << dev) & recmask)) {
+				fprintf(stderr, "Invalid recording source %s\n", argv[2]);
+				exit(-1);
+			}
+			if (argv[1][0] == '+')
+				recsrc |= (1 << dev);
+			else
+				recsrc &= ~(1 << dev);
+
+			if (ioctl(baz, SOUND_MIXER_WRITE_RECSRC, &recsrc) == -1) {
+				perror("SOUND_MIXER_WRITE_RECSRC");
+				exit(-1);
+			}
+			print_recsrc();
+
+		} else
+			usage();
+	} else {
+		if (bar) {
+			if (strchr(argv[2], ':') == NULL) {
+				sscanf(argv[2], "%d", &bar);
+				dev = bar;
+			} else 
+				sscanf(argv[2], "%d:%d", &bar, &dev);
+	
+			if (bar < 0)
+				bar = 0;
+			if (dev < 0)
+				dev = 0;
+			if (bar > 100)
+				bar = 100;
+			if (dev > 100)
+				dev = 100;
+
+			printf("Setting the mixer %s to %d:%d.\n", names[foo], bar, dev);
+
+                        bar |= dev << 8;
+			if (ioctl(baz, MIXER_WRITE(foo), &bar) == -1)
+				perror("WRITE_MIXER");
+	return (0);
+		} else {
+			if (ioctl(baz, MIXER_READ(foo),&bar)== -1)
+			   perror("MIXER_READ");
+			printf("The mixer %s is currently set to %d:%d.\n", names[foo], bar & 0x7f, (bar >> 8) & 0x7f);
+		}
+	}
+
+	close(baz);
+}