1 files changed, 75 insertions, 0 deletions
diff --git a/muse2/muse/controlfifo.cpp b/muse2/muse/controlfifo.cpp
new file mode 100644
index 00000000..526e88c7
--- /dev/null
+++ b/muse2/muse/controlfifo.cpp
@@ -0,0 +1,75 @@
+//=============================================================================
+//  MusE
+//  Linux Music Editor
+//
+//  Copyright (C) 1999-2010 by Werner Schweer and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#include "controlfifo.h"
+
+//---------------------------------------------------------
+//   ControlFifo
+//    put
+//    return true on fifo overflow
+//---------------------------------------------------------
+
+bool ControlFifo::put(const ControlEvent& event)
+      {
+      if (size < CONTROL_FIFO_SIZE) {
+            fifo[wIndex] = event;
+            wIndex = (wIndex + 1) % CONTROL_FIFO_SIZE;
+            // q_atomic_increment(&size);
+            ++size;
+            return false;
+            }
+      return true;
+      }
+
+//---------------------------------------------------------
+//   get
+//---------------------------------------------------------
+
+ControlEvent ControlFifo::get()
+      {
+      ControlEvent event(fifo[rIndex]);
+      rIndex = (rIndex + 1) % CONTROL_FIFO_SIZE;
+      // q_atomic_decrement(&size);
+      --size;
+      return event;
+      }
+
+//---------------------------------------------------------
+//   peek
+//---------------------------------------------------------
+
+const ControlEvent& ControlFifo::peek(int n)
+      {
+      int idx = (rIndex + n) % CONTROL_FIFO_SIZE;
+      return fifo[idx];
+      }
+
+//---------------------------------------------------------
+//   remove
+//---------------------------------------------------------
+
+void ControlFifo::remove()
+      {
+      rIndex = (rIndex + 1) % CONTROL_FIFO_SIZE;
+      // q_atomic_decrement(&size);
+      --size;
+      }
+
+
+