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authorRobert Jonsson <spamatica@gmail.com>2011-03-07 19:01:11 +0000
committerRobert Jonsson <spamatica@gmail.com>2011-03-07 19:01:11 +0000
commite40fc849149dd97c248866a4a1d026dda5e57b62 (patch)
treeb12b358f3b3a0608001d30403358f8443118ec5f /attic/muse_qt4_evolution/synti/libsynti/gui.cpp
parent1bd4f2e8d9745cabb667b043171cad22c8577768 (diff)
clean3
Diffstat (limited to 'attic/muse_qt4_evolution/synti/libsynti/gui.cpp')
-rw-r--r--attic/muse_qt4_evolution/synti/libsynti/gui.cpp124
1 files changed, 124 insertions, 0 deletions
diff --git a/attic/muse_qt4_evolution/synti/libsynti/gui.cpp b/attic/muse_qt4_evolution/synti/libsynti/gui.cpp
new file mode 100644
index 00000000..30fd177b
--- /dev/null
+++ b/attic/muse_qt4_evolution/synti/libsynti/gui.cpp
@@ -0,0 +1,124 @@
+//=========================================================
+// MusE
+// Linux Music Editor
+// software synthesizer helper library
+// $Id: gui.cpp,v 1.7 2005/05/11 14:18:48 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;
+ }
+ }
+
+//---------------------------------------------------------
+// sendController
+//---------------------------------------------------------
+
+void MessGui::sendController(int ch, int idx, int val)
+ {
+ sendEvent(MidiEvent(0, ch, ME_CONTROLLER, idx, val));
+ }
+
+//---------------------------------------------------------
+// sendSysex
+//---------------------------------------------------------
+
+void MessGui::sendSysex(unsigned char* p, int n)
+ {
+ sendEvent(MidiEvent(0, ME_SYSEX, p, n));
+ }
+
+//---------------------------------------------------------
+// writeEvent
+// send an event to synti gui
+//---------------------------------------------------------
+
+void MessGui::writeEvent(const MidiEvent& 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
+ }
+
+//---------------------------------------------------------
+// sendEvent
+//---------------------------------------------------------
+
+void MessGui::sendEvent(const MidiEvent& ev)
+ {
+ if (wFifoSize == EVENT_FIFO_SIZE) {
+ printf("event gui->synti fifo overflow\n");
+ return;
+ }
+ wFifo[wFifoWindex] = ev;
+ wFifoWindex = (wFifoWindex + 1) % EVENT_FIFO_SIZE;
+ ++wFifoSize;
+ }
+
+//---------------------------------------------------------
+// readEvent
+// read event from synti gui
+//---------------------------------------------------------
+
+MidiEvent MessGui::readEvent()
+ {
+ MidiEvent ev = wFifo[wFifoRindex];
+ wFifoRindex = (wFifoRindex + 1) % EVENT_FIFO_SIZE;
+ --wFifoSize;
+ return ev;
+ }
+