1 files changed, 130 insertions, 0 deletions
diff --git a/muse2/synti/libsynti/gui.cpp b/muse2/synti/libsynti/gui.cpp
new file mode 100644
index 00000000..cc737a9e
--- /dev/null
+++ b/muse2/synti/libsynti/gui.cpp
@@ -0,0 +1,130 @@
+//=========================================================
+//  MusE
+//  Linux Music Editor
+//    software synthesizer helper library
+//    $Id: gui.cpp,v 1.5 2004/04/11 10:46:14 wschweer Exp $
+//
+//  (C) Copyright 2004 Werner Schweer (ws@seh.de)
+//=========================================================
+
+#include "gui.h"
+#include "muse/midi.h"
+
+#include <unistd.h>
+
+//---------------------------------------------------------
+//   MessGui
+//---------------------------------------------------------
+
+MessGui::MessGui()
+      {
+      //
+      // prepare for interprocess communication:
+      //
+      int filedes[2];         // 0 - reading   1 - writing
+      if (pipe(filedes) == -1) {
+            perror("thread:creating pipe4");
+            exit(-1);
+            }
+      readFd      = filedes[0];
+      writeFd     = filedes[1];
+      wFifoSize   = 0;
+      wFifoWindex = 0;
+      wFifoRindex = 0;
+      rFifoSize   = 0;
+      rFifoWindex = 0;
+      rFifoRindex = 0;
+      }
+
+//---------------------------------------------------------
+//   MessGui
+//---------------------------------------------------------
+
+MessGui::~MessGui()
+      {
+      }
+
+//---------------------------------------------------------
+//   readMessage
+//---------------------------------------------------------
+
+void MessGui::readMessage()
+      {
+      char c;
+      while (rFifoSize) {
+            ::read(readFd, &c, 1);
+            processEvent(rFifo[rFifoRindex]);
+            rFifoRindex = (rFifoRindex + 1) % EVENT_FIFO_SIZE;
+            --rFifoSize;
+            }
+      }
+
+//---------------------------------------------------------
+//   sendEvent
+//---------------------------------------------------------
+
+void MessGui::sendEvent(const MidiPlayEvent& ev)
+      {
+      if (wFifoSize == EVENT_FIFO_SIZE) {
+            printf("event gui->synti  fifo overflow\n");
+            return;
+            }
+      wFifo[wFifoWindex] = ev;
+      wFifoWindex = (wFifoWindex + 1) % EVENT_FIFO_SIZE;
+      ++wFifoSize;
+      }
+
+//---------------------------------------------------------
+//   sendController
+//---------------------------------------------------------
+
+void MessGui::sendController(int ch, int idx, int val)
+      {
+//      MidiPlayEvent pe(0, 0, ch, ME_CONTROLLER, idx, val);
+//      sendEvent(pe);
+
+      sendEvent(MidiPlayEvent(0, 0, ch, ME_CONTROLLER, idx, val));
+      }
+
+//---------------------------------------------------------
+//   sendSysex
+//---------------------------------------------------------
+
+void MessGui::sendSysex(unsigned char* p, int n)
+      {
+//      MidiPlayEvent pe(0, 0, ME_SYSEX, p, n);
+//      sendEvent(pe);
+
+      sendEvent(MidiPlayEvent(0, 0, ME_SYSEX, p, n));
+      }
+
+//---------------------------------------------------------
+//   writeEvent
+//    send an event to synti gui
+//---------------------------------------------------------
+
+void MessGui::writeEvent(const MidiPlayEvent& ev)
+      {
+      if (rFifoSize == EVENT_FIFO_SIZE) {
+            printf("event synti->gui  fifo overflow\n");
+            return;
+            }
+      rFifo[rFifoWindex] = ev;
+      rFifoWindex = (rFifoWindex + 1) % EVENT_FIFO_SIZE;
+      ++rFifoSize;
+      write(writeFd, "x", 1);  // wakeup GUI
+      }
+
+//---------------------------------------------------------
+//   readEvent
+//    read event from synti gui
+//---------------------------------------------------------
+
+MidiPlayEvent MessGui::readEvent()
+      {
+      MidiPlayEvent ev = wFifo[wFifoRindex];
+      wFifoRindex = (wFifoRindex + 1) % EVENT_FIFO_SIZE;
+      --wFifoSize;
+      return ev;
+      }
+