Actually added the code mentioned in my last commit. Whoops.

git-svn-id: svn://localhost/ardour2/branches/midi@643 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/midi_source.cc

@@ -0,0 +1,133 @@
+/*
+    Copyright (C) 2006 Paul Davis
+	Written by Dave Robillard, 2006
+
+    This program 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.
+
+    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 <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <float.h>
+#include <cerrno>
+#include <ctime>
+#include <cmath>
+#include <iomanip>
+#include <algorithm>
+
+#include <pbd/xml++.h>
+#include <pbd/pthread_utils.h>
+
+#include <ardour/midi_source.h>
+
+#include "i18n.h"
+
+using namespace std;
+using namespace ARDOUR;
+using namespace PBD;
+
+sigc::signal<void,MidiSource *> MidiSource::MidiSourceCreated;
+
+MidiSource::MidiSource (string name)
+	: Source (name)
+{
+	_read_data_count = 0;
+	_write_data_count = 0;
+}
+
+MidiSource::MidiSource (const XMLNode& node) 
+	: Source (node)
+{
+	_read_data_count = 0;
+	_write_data_count = 0;
+
+	if (set_state (node)) {
+		throw failed_constructor();
+	}
+}
+
+MidiSource::~MidiSource ()
+{
+}
+
+XMLNode&
+MidiSource::get_state ()
+{
+	XMLNode& node (Source::get_state());
+
+	if (_captured_for.length()) {
+		node.add_property ("captured-for", _captured_for);
+	}
+
+	return node;
+}
+
+int
+MidiSource::set_state (const XMLNode& node)
+{
+	const XMLProperty* prop;
+
+	Source::set_state (node);
+
+	if ((prop = node.property ("captured-for")) != 0) {
+		_captured_for = prop->value();
+	}
+
+	return 0;
+}
+
+jack_nframes_t
+MidiSource::read (unsigned char *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const
+{
+	//Glib::Mutex::Lock lm (_lock);
+	//return read_unlocked (dst, start, cnt, workbuf);
+	return 0;
+}
+
+jack_nframes_t
+MidiSource::write (unsigned char *dst, jack_nframes_t cnt, char * workbuf)
+{
+	//Glib::Mutex::Lock lm (_lock);
+	//return write_unlocked (dst, cnt, workbuf);
+	return 0;
+}
+
+
+bool
+MidiSource::file_changed (string path)
+{
+	struct stat stat_file;
+	//struct stat stat_peak;
+
+	int e1 = stat (path.c_str(), &stat_file);
+	//int e2 = stat (peak_path(path).c_str(), &stat_peak);
+	
+	if (!e1){//&& !e2 && stat_file.st_mtime > stat_peak.st_mtime){
+		return true;
+	} else {
+		return false;
+	}
+}
+
+
+void
+MidiSource::update_length (jack_nframes_t pos, jack_nframes_t cnt)
+{
+	if (pos + cnt > _length) {
+		_length = pos+cnt;
+	}
+}
+