rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 95 insertions, 0 deletions

diff --git a/libs/ardour/jack_slave.cc b/libs/ardour/jack_slave.cc
new file mode 100644
index 0000000000..f65be1deea
--- /dev/null
+++ b/libs/ardour/jack_slave.cc
@@ -0,0 +1,95 @@
+/*
+    Copyright (C) 2004 Paul Davis 
+
+    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 <iostream>
+
+#include <errno.h>
+#include <jack/jack.h>
+#include <jack/transport.h>
+
+#include <ardour/slave.h>
+#include <ardour/session.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace sigc;
+
+JACK_Slave::JACK_Slave (jack_client_t* j)
+	: jack (j)
+{
+	float x;
+	nframes_t p;
+	/* call this to initialize things */
+	speed_and_position (x, p);
+}
+
+JACK_Slave::~JACK_Slave ()
+{
+}
+
+void
+JACK_Slave::reset_client (jack_client_t* j)
+{
+	jack = j;
+}
+
+bool
+JACK_Slave::locked() const
+{
+	return true;
+}
+
+bool
+JACK_Slave::ok() const
+{
+	return true;
+}
+
+bool 
+JACK_Slave::speed_and_position (float& sp, nframes_t& position) 
+{
+	jack_position_t pos;
+	jack_transport_state_t state;
+
+	state = jack_transport_query (jack, &pos);
+
+	switch (state) {
+	case JackTransportStopped:
+		speed = 0;
+		_starting = false;
+		break;
+	case JackTransportRolling:
+		speed = 1.0;
+		_starting = false;
+		break;
+	case JackTransportLooping:
+		speed = 1.0;
+		_starting = false;
+		break;
+	case JackTransportStarting:
+		_starting = true;
+		// don't adjust speed here, just leave it as it was
+		break;
+	}
+
+	sp = speed;
+	position = pos.frame;
+	return true;
+}