Added ac3dec 0.6.1 with native ALSA driver.

ac3dec/test/dither_test.c

@@ -0,0 +1,43 @@
+/* 
+ *  dither_test.c
+ *
+ *	Aaron Holtzman - May 1999
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "ac3.h"
+#include "ac3_internal.h"
+#include "dither.h"
+
+#include <sys/time.h>
+#include <unistd.h>
+
+int main(void)
+{
+	int i,j,foo;
+	struct timeval start,end;
+
+	/*
+	for(i=0;i < 65538 ;i++)
+		//printf("%04x\n",dither_gen());
+		printf("%f\n",((sint_16)dither_gen())/ 32768.0);
+	printf("\n");
+	*/
+
+
+
+	for(j=0;j < 10 ;j++)
+	{
+		gettimeofday(&start,0);
+		for(i=0;i < 10000 ;i++)
+		{
+			foo = dither_gen();
+		}
+		gettimeofday(&end,0);
+		printf("%f us\n",((end.tv_sec - start.tv_sec) * 1000000 + 
+				(end.tv_usec - start.tv_usec))/10000.0);
+	}
+
+}