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OSS sound now retries opening /dev/dsp up to 3 times if it fails the first

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time, by checking whether the device is busy or temporarily unavailable (I
haven't seen the latter happen, but the former may occur if your window
manager is set to make noise when a window pops up). Between tries, the
client sleep()'s for one second (should this be half a second or even
faster?).
This commit is contained in:
Jeff Teunissen 2000-10-11 10:34:23 +00:00
parent 4173134bae
commit 40269b2bb5
1 changed files with 15 additions and 7 deletions
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20
source/snd_oss.c
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@ -36,6 +36,7 @@
#include <sys/types.h>
#include <sys/shm.h>
#include <sys/wait.h>
#include <errno.h>
#include <stdio.h>
#ifdef HAVE_SYS_IOCTL_H
@ -78,18 +79,25 @@ SNDDMA_Init(void)
char *s;
struct audio_buf_info info;
int caps;
int retries = 3;
snd_inited = 0;
// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
audio_fd = open("/dev/dsp", O_RDWR);
if (audio_fd < 0)
{
perror("/dev/dsp");
Con_Printf("Could not open /dev/dsp\n");
audio_fd = open ("/dev/dsp", O_RDWR);
if (audio_fd < 0) { // Failed open, retry up to 3 times if it's busy
while ((audio_fd < 0) && retries-- &&
((errno == EAGAIN) || (errno == EBUSY))) {
sleep (1);
audio_fd = open ("/dev/dsp", O_RDWR);
}
if (audio_fd < 0) {
perror ("/dev/dsp");
Con_Printf ("Could not open /dev/dsp\n");
return 0;
}
}
rc = ioctl(audio_fd, SNDCTL_DSP_RESET, 0);
if (rc < 0)