Changeset 2422:23f102fcb3e3 in roaraudio

Timestamp:

08/18/09 22:02:30 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

much more precise clock :)))

Location:

roard

Files:

• driver_sysclock.c (modified) (3 diffs)
• include/driver_sysclock.h (modified) (1 diff)

roard/driver_sysclock.c

@@ -72 +72 @@
  gettimeofday(&(self->lasttime), NULL);
 
+ self->last_wanted = 0;
+
  return 0;
 }
@@ -89 +91 @@
  struct driver_sysclock * self = vio->inst;
  struct timeval now;
- unsigned long long diff = (1000000 * count / self->bps);
- unsigned long long ago;
+ long long diff = (1000000 * count / self->bps);
+ long long ago;
 
  gettimeofday(&now, NULL);
@@ -97 +99 @@
  ago += 1000000*(now.tv_sec - self->lasttime.tv_sec);
 
+ ago -= self->last_wanted;
+
  memcpy(&(self->lasttime), &now, sizeof(now));
 
  ROAR_DBG("driver_sysclock_write(*): count=%u, bps=%u, diff=%llu, ago=%llu", count, self->bps, diff, ago);
 
- if ( diff <= ago )
-  return count;
-
  diff -= ago;
 
- usleep(diff);
+ self->last_wanted = diff;
+
+ if ( diff > 0 )
+  usleep(diff);
 
  return count;

roard/include/driver_sysclock.h

@@ -29 +29 @@
  int bps;
  struct timeval lasttime;
+ long int last_wanted;
 };