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Synchronize with sys/i386/isa/pcaudio.c revision 1.35.

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This commit is contained in:
KATO Takenori 1997-09-04 13:20:33 +00:00
parent cc09f59a1e
commit ef24e6ccb5
1 changed files with 29 additions and 12 deletions
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41
sys/pc98/pc98/pcaudio.c
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@ -25,7 +25,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
* $Id: pcaudio.c,v 1.9 1997/02/22 09:43:43 peter Exp $
*/
#include "pca.h"
@ -38,6 +38,7 @@
#include <sys/fcntl.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/filio.h>
#include <machine/clock.h>
#include <machine/pcaudioio.h>
@ -64,9 +65,9 @@
static struct pca_status {
char open; /* device open */
char queries; /* did others try opening */
unsigned char *buf[2]; /* double buffering */
unsigned char *buf[3]; /* triple buffering */
unsigned char *buffer; /* current buffer ptr */
unsigned in_use[2]; /* buffers fill */
unsigned in_use[3]; /* buffers fill */
unsigned index; /* index in current buffer */
unsigned counter; /* sample counter */
unsigned scale; /* sample counter scale */
@ -78,10 +79,12 @@ static struct pca_status {
unsigned char oldval; /* old timer port value */
char timer_on; /* is playback running */
struct selinfo wsel; /* select status */
char non_block; /* set non-block on write status */
} pca_status;
static char buffer1[BUF_SIZE];
static char buffer2[BUF_SIZE];
static char buffer3[BUF_SIZE];
static char volume_table[256];
#ifdef DEVFS
@ -137,7 +140,10 @@ pca_volume(int volume)
int i, j;
for (i=0; i<256; i++) {
j = ((i-128)*volume)/25;
/* XXX
j = ((i-128)*volume)/100;
*/
if (j<-128)
j = -128;
if (j>127)
@ -155,8 +161,9 @@ pca_init(void)
pca_status.timer_on = 0;
pca_status.buf[0] = (unsigned char *)&buffer1[0];
pca_status.buf[1] = (unsigned char *)&buffer2[0];
pca_status.buf[2] = (unsigned char *)&buffer3[0];
pca_status.buffer = pca_status.buf[0];
pca_status.in_use[0] = pca_status.in_use[1] = 0;
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[3] = 0;
pca_status.current = 0;
pca_status.sample_rate = SAMPLE_RATE;
pca_status.scale = (pca_status.sample_rate << 8) / INTERRUPT_RATE;
@ -218,7 +225,7 @@ pca_stop(void)
release_timer2();
#endif
/* reset the buffer */
pca_status.in_use[0] = pca_status.in_use[1] = 0;
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
pca_status.index = 0;
pca_status.counter = 0;
pca_status.current = 0;
@ -270,7 +277,7 @@ pca_wait(void)
if (!pca_status.timer_on)
return 0;
while (pca_status.in_use[0] || pca_status.in_use[1]) {
while (pca_status.in_use[0] || pca_status.in_use[1] || pca_status.in_use[2]) {
x = spltty();
pca_sleep = 1;
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_drain", 0);
@ -329,10 +336,11 @@ pcaopen(dev_t dev, int flags, int fmt, struct proc *p)
return EBUSY;
}
pca_status.buffer = pca_status.buf[0];
pca_status.in_use[0] = pca_status.in_use[1] = 0;
pca_status.in_use[0] = pca_status.in_use[1] = pca_status.in_use[2] = 0;
pca_status.timer_on = 0;
pca_status.open = 1;
pca_status.processed = 0;
pca_status.non_block = 0; /* block on write */
return 0;
}
@ -363,7 +371,9 @@ pcawrite(dev_t dev, struct uio *uio, int flag)
return ENXIO;
while ((count = min(BUF_SIZE, uio->uio_resid)) > 0) {
if (pca_status.in_use[0] && pca_status.in_use[1]) {
if (pca_status.in_use[0] && pca_status.in_use[1] && pca_status.in_use[2]) {
if(pca_status.non_block)
return EWOULDBLOCK;
x = spltty();
pca_sleep = 1;
error = tsleep(&pca_sleep, PZERO|PCATCH, "pca_wait", 0);
@ -374,7 +384,11 @@ pcawrite(dev_t dev, struct uio *uio, int flag)
return error;
}
}
which = pca_status.in_use[0] ? 1 : 0;
if(!pca_status.in_use[0])
which = 0;
else if(!pca_status.in_use[1])
which = 1;
else which = 2;
if (count && !pca_status.in_use[which]) {
uiomove(pca_status.buf[which], count, uio);
pca_status.processed += count;
@ -457,7 +471,9 @@ pcaioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
case AUDIO_COMPAT_FLUSH:
pca_stop();
return 0;
case FIONBIO:
pca_status.non_block = (char)(*(int *)data);
return 0;
}
return ENXIO;
}
@ -493,7 +509,8 @@ pcaintr(struct clockframe *frame)
if (pca_status.index >= pca_status.in_use[pca_status.current]) {
pca_status.index = pca_status.counter = 0;
pca_status.in_use[pca_status.current] = 0;
pca_status.current ^= 1;
pca_status.current++;
if(pca_status.current > 2) pca_status.current = 0;
pca_status.buffer = pca_status.buf[pca_status.current];
if (pca_sleep)
wakeup(&pca_sleep);
@ -515,7 +532,7 @@ pcaselect(dev_t dev, int rw, struct proc *p)
switch (rw) {
case FWRITE:
if (!pca_status.in_use[0] || !pca_status.in_use[1]) {
if (!pca_status.in_use[0] || !pca_status.in_use[1] || !pca_status.in_use[2]) {
splx(s);
return(1);
}