Correct Dummy driver.

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@4465 0c269be4-1314-0410-8aa9-9f06e86f4224

ChangeLog

@@ -35,6 +35,10 @@ Chris Caudle
   Jackdmp changes log
 ---------------------------
 
+2011-06-20 Stephane Letz  <letz@grame.fr>
+
+	* Correct Dummy driver.
+
 2011-06-17 Stephane Letz  <letz@grame.fr>
 
 	* NetJack2 : connection error handling.

common/JackDummyDriver.cpp

@@ -26,6 +26,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 #include "JackCompilerDeps.h"
 #include <iostream>
 #include <unistd.h>
+#include <math.h>
 
 namespace Jack
 {
@@ -53,7 +54,7 @@ int JackDummyDriver::Open(jack_nframes_t buffer_size,
                             playback_driver_name,
                             capture_latency,
                             playback_latency) == 0) {
-        int buffer_size = int((fWaitTime * fEngineControl->fSampleRate) / 1000000.0f);
+        int buffer_size = lroundf((fWaitTime * fEngineControl->fSampleRate) / 1000000.0f);
         if (buffer_size > BUFFER_SIZE_MAX) {
             buffer_size = BUFFER_SIZE_MAX;
             jack_error("Buffer size set to %d ", BUFFER_SIZE_MAX);