phantom_write_osx.diff

diff -r 54d40057f55a media/libsydneyaudio/src/sydney_audio_mac.c
--- a/media/libsydneyaudio/src/sydney_audio_mac.c	Thu Sep 23 20:09:00 2010 -0700
+++ b/media/libsydneyaudio/src/sydney_audio_mac.c	Fri Sep 24 20:51:57 2010 -0500
@@ -72,6 +72,7 @@
   bool              playing;
   int64_t           bytes_played;
   int64_t           total_bytes_played;
+  int64_t           bytes_lost;
 
   /* audio format info */
   unsigned int      rate;
@@ -156,6 +157,7 @@
   s->playing      = FALSE;
   s->bytes_played = 0;
   s->total_bytes_played = 0;
+  s->bytes_lost = 0;
   s->rate         = rate;
   s->n_channels   = n_channels;
   s->bytes_per_ch = 2;
@@ -484,6 +486,7 @@
         printf("!");  /* not enough audio data */
 #endif
         memset(dst, 0, bytes_to_copy);
+        s->bytes_lost += bytes_to_copy;
         break;
       }
       free(s->bl_head);
@@ -539,7 +542,7 @@
   }
 
   pthread_mutex_lock(&s->mutex);
-  *pos = s->total_bytes_played + s->bytes_played;
+  *pos = s->total_bytes_played + s->bytes_played - s->bytes_lost;
   pthread_mutex_unlock(&s->mutex);
   return SA_SUCCESS;
 }
@@ -579,8 +582,9 @@
    * The audio device resets its mSampleTime counter after pausing,
    * so we need to clear our tracking value to keep that in sync.
    */
-  s->total_bytes_played += s->bytes_played;
+  s->total_bytes_played += s->bytes_played - s->bytes_lost;
   s->bytes_played = 0;
+  s->bytes_lost = 0;
   pthread_mutex_unlock(&s->mutex);
 
   /*