Messages in this thread |  | | | Date | Sun, 25 Oct 1998 19:38:26 +0100 (CET) | | From | Andrea Arcangeli <> | | Subject | Re: sb16 duplex and quake |
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On Tue, 20 Oct 1998, Daniel J. Rodriksson wrote:
>Found the problem > >Quake is opening the device for both read and write >( maybe a conference amongst the participants was in mind ? )
This trivial fullduplex proggy that was working fine with my sb-duplex patch doesn' t work with your one (and so with 126):
#include <fcntl.h> #include <sys/ioctl.h> #include <linux/soundcard.h>
#define BUFSIZE 1024 void main(void) { int format = AFMT_S16_LE; /* int speed = 8000;*/ char buf[BUFSIZE]; int fds[2]; int dsp = open("/dev/dsp",O_RDWR); if (ioctl(dsp, SNDCTL_DSP_SETFMT, &format)==-1) { perror("SNDCTL_DSP_SETFMT\n"); exit(1); } /* if (ioctl(dsp, SNDCTL_DSP_SPEED, &speed)==-1) { perror("SNDCTL_DSP_SPEED\n"); exit(1); }*/ pipe(fds); if(fork()) for (;;) { read(dsp,buf,BUFSIZE); write(fds[1],buf,BUFSIZE); } else for (;;) { read(fds[0],buf,BUFSIZE); write(dsp,buf,BUFSIZE); } } While it _not_ works I get many:
Oct 25 19:20:55 dragon kernel: Sound: DMA (input) timed out - IRQ/DRQ config error?
Andrea Arcangeli
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