From acbda29f838280ba98cf9e9e539e9d8a6e8fc6ad Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 9 Jun 2006 15:07:31 +0000
Subject: Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/JackMidiDriver.h | 123 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 src/engine/JackMidiDriver.h

(limited to 'src/engine/JackMidiDriver.h')

diff --git a/src/engine/JackMidiDriver.h b/src/engine/JackMidiDriver.h
new file mode 100644
index 00000000..950d382f
--- /dev/null
+++ b/src/engine/JackMidiDriver.h
@@ -0,0 +1,123 @@
+/* This file is part of Om.  Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Om 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 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.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef JACKMIDIDRIVER_H
+#define JACKMIDIDRIVER_H
+
+#include <jack/jack.h>
+#include <jack/midiport.h>
+#include "config.h"
+#include "List.h"
+#include "util/Queue.h"
+#include "MidiDriver.h"
+
+namespace Om {
+
+class Node;
+class SetPortValueEvent;
+class JackMidiDriver;
+template <typename T> class PortBase;
+
+
+/** Representation of an JACK MIDI port.
+ *
+ * \ingroup engine
+ */
+class JackMidiPort : public DriverPort, public ListNode<JackMidiPort*>
+{
+public:
+	JackMidiPort(JackMidiDriver* driver, PortBase<MidiMessage>* port);
+	virtual ~JackMidiPort();
+
+	void prepare_block(const samplecount block_start, const samplecount block_end);
+	
+	void add_to_driver();
+	void remove_from_driver();
+	void set_name(const string& name) { jack_port_set_name(m_jack_port, name.c_str()); };
+	
+	PortBase<MidiMessage>* patch_port() const { return m_patch_port; }
+
+private:
+	// Prevent copies (undefined)
+	JackMidiPort(const JackMidiPort&);
+	JackMidiPort& operator=(const JackMidiPort&);
+ 
+	JackMidiDriver*        m_driver;
+	jack_port_t*           m_jack_port;
+	PortBase<MidiMessage>* m_patch_port;
+};
+
+
+/** Jack MIDI driver.
+ *
+ * This driver reads Jack MIDI events and dispatches them to the appropriate
+ * JackMidiPort for processing.
+ *
+ * \ingroup engine
+ */
+class JackMidiDriver : public MidiDriver
+{
+public:
+	JackMidiDriver(jack_client_t* client);
+	~JackMidiDriver();
+
+	void activate();
+	void deactivate();
+	void enable()  { m_is_enabled = true; }
+	void disable() { m_is_enabled = false; }
+	
+	bool is_activated() const { return m_is_activated; }
+	bool is_enabled() const   { return m_is_enabled; }
+	
+	void prepare_block(const samplecount block_start, const samplecount block_end);
+
+	JackMidiPort* create_port(PortBase<MidiMessage>* patch_port)
+	{ return new JackMidiPort(this, patch_port); }
+
+	jack_client_t* jack_client()        { return m_client; }
+
+private:
+	// Prevent copies (undefined)
+	JackMidiDriver(const JackMidiDriver&);
+	JackMidiDriver& operator=(const JackMidiDriver&);
+	
+	List<JackMidiPort*> m_in_ports;
+	List<JackMidiPort*> m_out_ports;
+	
+	friend class JackMidiPort;
+	
+	// Functions for JackMidiPort
+	void          add_port(JackMidiPort* port);
+	JackMidiPort* remove_port(JackMidiPort* port);
+	
+	void add_output(ListNode<JackMidiPort*>* port);
+	ListNode<JackMidiPort*>* remove_output(JackMidiPort* port);
+	
+	// MIDI thread
+	static void* process_midi_in(void* me);
+
+	jack_client_t* m_client;
+	pthread_t      m_process_thread;
+	bool           m_is_activated;
+	bool           m_is_enabled;
+	static bool    m_midi_thread_exit_flag;
+};
+
+
+} // namespace Om
+
+
+#endif // JACKMIDIDRIVER_H
-- 
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