Date: Fri, 6 Dec 1996 21:46:44 -0600 From: dnelson@emsphone.com (Dan Nelson) To: S.Brandenburg@tu-bs.de Cc: freebsd-questions@freebsd.org Subject: Re: O si o [sound question] Message-ID: <Mutt.19961206214644.dan@dan.emsphone.com> In-Reply-To: <32A8CD96.41C67EA6@algieba.ts.rz.tu-bs.de>; from "Sven Brandenburg" on Dec 7, 1996 02:51:18 %2B0100 References: <199612062248.RAA08354@dyson.iquest.net> <32A8CD96.41C67EA6@algieba.ts.rz.tu-bs.de>
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In the last eposode (Dec 7), Sven Brandenburg said:
> What do you use to play/record ?
> (which program and how configured, tell me everything :)
> Should a "cat iama16bitsample.au > /dev/audio" give you 16 bit output?
> (A BIG candidate for the lame-question-of-the-year, sorry!)
Here are the ones I use. 'listen' is mono-only, but that's only
another ioctl() away. 'play' will also play to the speaker with the -s
switch.
-Dan Nelson
dnelson@emsphone.com
--- listen.c ---
#include <machine/soundcard.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdio.h>
main(int argc, char *argv[])
{
int fd = open("/dev/dsp", O_RDONLY);
int rate = 8012;
int bits = 8;
int c;
int len;
char buf[1024];
while ((c = getopt(argc, argv, "hr:b:")) != EOF)
{
switch (c)
{
case 'r':
rate = atoi(optarg);
break;
case 'b':
bits = atoi(optarg);
break;
case '?':
case 'h':
printf ("listen -r rate -b bits\n");
exit(1);
break;
}
}
ioctl(fd, SNDCTL_DSP_SETFMT, &bits);
ioctl(fd, SOUND_PCM_WRITE_RATE, &rate);
while ((len = read(fd, buf, sizeof(buf))) > 0)
write(fileno(stdout), buf, len);
}
--- END ---
--- play.c ---
#include <machine/soundcard.h>
#include <machine/pcaudioio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdio.h>
main(int argc, char *argv[])
{
int fd;
int rate = 8012;
int bits = 8;
int speaker = 0;
int channels = 1;
int c;
int len;
char buf[1024];
while ((c = getopt(argc, argv, "r:b:c:s")) != EOF)
{
switch (c)
{
case 's':
speaker = 1;
break;
case 'r':
rate = atoi(optarg);
break;
case 'c':
channels = atoi(optarg);
break;
case 'b':
bits = atoi(optarg);
break;
case '?':
case 'h':
printf ("play [-s] [-c channels] [-r rate] [-b bits]\n");
exit(1);
break;
}
}
if (speaker)
{
audio_info_t ait;
ait.play.sample_rate = rate;
ait.play.encoding = AUDIO_ENCODING_RAW;
ait.play.gain = 150;
ait.play.pause = -1;
fd = open("/dev/pcaudio", O_WRONLY);
ioctl(fd, AUDIO_SETINFO, &ait);
} else
{
fd = open("/dev/dsp", O_WRONLY);
ioctl(fd, SNDCTL_DSP_SETFMT, &bits);
ioctl(fd, SOUND_PCM_WRITE_RATE, &rate);
ioctl(fd, SOUND_PCM_WRITE_CHANNELS, &channels);
}
while ((len = read(fileno(stdin), buf, sizeof(buf))) > 0)
write(fd, buf, len);
}
---END---
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