move inadvertently moved jack_slave.cc back to its rightful spot

libs/backends/jack/jack_slave.cc

@@ -1,79 +0,0 @@
-/*
-    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 <cerrno>
-
-#include "ardour/audioengine.h"
-#include "ardour/slave.h"
-
-using namespace std;
-using namespace ARDOUR;
-
-JACK_Slave::JACK_Slave (AudioEngine& e)
-	: engine (e)
-{
-	double x;
-	framepos_t p;
-	/* call this to initialize things */
-	speed_and_position (x, p);
-}
-
-JACK_Slave::~JACK_Slave ()
-{
-}
-
-bool
-JACK_Slave::locked() const
-{
-	return true;
-}
-
-bool
-JACK_Slave::ok() const
-{
-	return true;
-}
-
-bool
-JACK_Slave::speed_and_position (double& sp, framepos_t& position)
-{
-	switch (engine.transport_state()) {
-	case TransportStopped:
-		speed = 0;
-		_starting = false;
-		break;
-	case TransportRolling:
-		speed = 1.0;
-		_starting = false;
-		break;
-	case TransportLooping:
-		speed = 1.0;
-		_starting = false;
-		break;
-	case TransportStarting:
-		_starting = true;
-		// don't adjust speed here, just leave it as it was
-		break;
-	}
-
-	sp = speed;
-	position = engine.transport_frame();
-	return true;
-}