Defined base sample rate.

git-svn-id: http://svn.zoneminder.com/svn/zm/trunk@907 e3e1d417-86f3-4887-817a-d78f3d33393f

src/zm_config.h.z

@@ -40,6 +40,9 @@
 #define ZM_SCALE_SCALE			100					// The factor by which we bump up 'scale' to simulate FP
 #define ZM_RATE_SCALE			100					// The factor by which we bump up 'rate' to simulate FP
 
+#define ZM_MAX_FPS              30                  // The maximum frame rate we expect to handle
+#define ZM_SAMPLE_RATE          int(1000000/ZM_MAX_FPS) // A general nyquist sample frequency for delays etc
+
 class ConfigItem
 {
 private:

src/zma.cpp

@@ -160,7 +160,7 @@ int main( int argc, char *argv[] )
 			sigprocmask( SIG_BLOCK, &block_set, 0 );
 			if ( !monitor->Analyse() )
 			{
-				usleep( 16666 ); // Nyquist sampling rate at 30fps, wouldn't expect any more than this
+				usleep( ZM_SAMPLE_RATE ); // Nyquist sampling rate at 30fps, wouldn't expect any more than this
 			}
 			sigprocmask( SIG_UNBLOCK, &block_set, 0 );
 		}