1 files changed, 0 insertions, 357 deletions
diff --git a/libs/ardour/mtc_slave.cc b/libs/ardour/mtc_slave.cc
deleted file mode 100644
index 0a0fbc1529..0000000000
--- a/libs/ardour/mtc_slave.cc
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
-    Copyright (C) 2002-4 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 <errno.h>
-#include <poll.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <pbd/error.h>
-#include <pbd/failed_constructor.h>
-#include <pbd/pthread_utils.h>
-
-#include <midi++/port.h>
-#include <ardour/slave.h>
-#include <ardour/session.h>
-#include <ardour/audioengine.h>
-#include <ardour/cycles.h>
-
-#include "i18n.h"
-
-using namespace ARDOUR;
-using namespace sigc;
-using namespace MIDI;
-using namespace PBD;
-
-MTC_Slave::MTC_Slave (Session& s, MIDI::Port& p) 
-	: session (s)
-{
-	can_notify_on_unknown_rate = true;
-
-	rebind (p);
-	reset ();
-}
-
-MTC_Slave::~MTC_Slave()
-{
-}
-
-void
-MTC_Slave::rebind (MIDI::Port& p)
-{
-	for (vector<sigc::connection>::iterator i = connections.begin(); i != connections.end(); ++i) {
-		(*i).disconnect ();
-	}
-
-	port = &p;
-
-	connections.push_back (port->input()->mtc_time.connect (mem_fun (*this, &MTC_Slave::update_mtc_time)));
-	connections.push_back (port->input()->mtc_qtr.connect (mem_fun (*this, &MTC_Slave::update_mtc_qtr)));
-	connections.push_back (port->input()->mtc_status.connect (mem_fun (*this, &MTC_Slave::update_mtc_status)));
-}
-
-void
-MTC_Slave::update_mtc_qtr (Parser& p)
-{
-	cycles_t cnow = get_cycles ();
-	nframes_t now = session.engine().frame_time();
-	nframes_t qtr;
-	static cycles_t last_qtr = 0;
-
-	qtr = (long) (session.frames_per_smpte_frame() / 4);
-	mtc_frame += qtr;
-	last_qtr = cnow;
-
-	current.guard1++;
-	current.position = mtc_frame;
-	current.timestamp = now;
-	current.guard2++;
-
-	last_inbound_frame = now;
-}
-
-void
-MTC_Slave::update_mtc_time (const byte *msg, bool was_full)
-{
-	nframes_t now = session.engine().frame_time();
-	SMPTE::Time smpte;
-	
-	smpte.hours = msg[3];
-	smpte.minutes = msg[2];
-	smpte.seconds = msg[1];
-	smpte.frames = msg[0];
-
-	switch (msg[4]) {
-	case MTC_24_FPS:
-		smpte.rate = 24;
-		smpte.drop = false;
-		can_notify_on_unknown_rate = true;
-		break;
-	case MTC_25_FPS:
-		smpte.rate = 25;
-		smpte.drop = false;
-		can_notify_on_unknown_rate = true;
-		break;
-	case MTC_30_FPS_DROP:
-		smpte.rate = 30;
-		smpte.drop = true;
-		can_notify_on_unknown_rate = true;
-		break;
-	case MTC_30_FPS:
-		smpte.rate = 30;
-		smpte.drop = false;
-		can_notify_on_unknown_rate = true;
-		break;
-	default:
-		/* throttle error messages about unknown MTC rates */
-		if (can_notify_on_unknown_rate) {
-			error << _("Unknown rate/drop value in incoming MTC stream, session values used instead") << endmsg;
-			can_notify_on_unknown_rate = false;
-		}
-		smpte.rate = session.smpte_frames_per_second();
-		smpte.drop = session.smpte_drop_frames();
-	}
-
-	session.smpte_to_sample (smpte, mtc_frame, true, false);
-	
-	if (was_full) {
-		
-		current.guard1++; 	 
-		current.position = mtc_frame; 	 
-		current.timestamp = 0; 	 
-		current.guard2++; 	 
-		
-		session.request_locate (mtc_frame, false); 	 
-		session.request_transport_speed (0);
-		update_mtc_status (MIDI::Parser::MTC_Stopped); 	 
-
- 		reset ();
-		
-	} else {
-		
-		/* We received the last quarter frame 7 quarter frames (1.75 mtc
-		   frames) after the instance when the contents of the mtc quarter
-		   frames were decided. Add time to compensate for the elapsed 1.75
-		   frames.
-		   Also compensate for audio latency. 
-		*/
-
-		mtc_frame += (long) (1.75 * session.frames_per_smpte_frame()) + session.worst_output_latency();
-		
-		if (first_mtc_frame == 0) {
-			first_mtc_frame = mtc_frame;
-			first_mtc_time = now;
-		} 
-		
-		current.guard1++;
-		current.position = mtc_frame;
-		current.timestamp = now;
-		current.guard2++;
-	}
-	
-	last_inbound_frame = now;
-}
-
-void
-MTC_Slave::handle_locate (const MIDI::byte* mmc_tc)
-{
-	MIDI::byte mtc[4];
-	
-	mtc[3] = mmc_tc[0] & 0xf; /* hrs only */
-	mtc[2] = mmc_tc[1];
-	mtc[1] = mmc_tc[2];
-	mtc[0] = mmc_tc[3];
-
-	update_mtc_time (mtc, true);
-}
-
-void
-MTC_Slave::update_mtc_status (MIDI::Parser::MTC_Status status)
-{
-
-	switch (status) {
-	case MTC_Stopped:
-		mtc_speed = 0.0f;
-		mtc_frame = 0;
-
-		current.guard1++;
-		current.position = mtc_frame;
-		current.timestamp = 0;
-		current.guard2++;
-
-		break;
-
-	case MTC_Forward:
-		mtc_speed = 0.0f;
-		mtc_frame = 0;
-
-		current.guard1++;
-		current.position = mtc_frame;
-		current.timestamp = 0;
-		current.guard2++;
-
-		break;
-
-	case MTC_Backward:
-		mtc_speed = 0.0f;
-		mtc_frame = 0;
-
-		current.guard1++;
-		current.position = mtc_frame;
-		current.timestamp = 0;
-		current.guard2++;
-
-		break;
-	}
-}
-
-void
-MTC_Slave::read_current (SafeTime *st) const
-{
-	int tries = 0;
-	do {
-		if (tries == 10) {
-			error << _("MTC Slave: atomic read of current time failed, sleeping!") << endmsg;
-			usleep (20);
-			tries = 0;
-		}
-
-		*st = current;
-		tries++;
-
-	} while (st->guard1 != st->guard2);
-}
-
-bool
-MTC_Slave::locked () const
-{
-	return port->input()->mtc_locked();
-}
-
-bool
-MTC_Slave::ok() const
-{
-	return true;
-}
-
-bool 
-MTC_Slave::speed_and_position (float& speed, nframes_t& pos)
-{
-	nframes_t now = session.engine().frame_time();
-	SafeTime last;
-	nframes_t frame_rate;
-	nframes_t elapsed;
-	float speed_now;
-
-	read_current (&last);
-
-	if (first_mtc_time == 0) {
-		speed = 0;
-		pos = last.position;
-		return true;
-	}
-	
-	/* no timecode for 1/4 second ? conclude that its stopped */
-
-	if (last_inbound_frame && now > last_inbound_frame && now - last_inbound_frame > session.frame_rate() / 4) {
-		mtc_speed = 0;
-		pos = last.position;
-		session.request_locate (pos, false);
-		session.request_transport_speed (0);
-		update_mtc_status (MIDI::Parser::MTC_Stopped);
-		reset();
-		return false;
-	}
-
-	frame_rate = session.frame_rate();
-
-	speed_now = (float) ((last.position - first_mtc_frame) / (double) (now - first_mtc_time));
-
-	accumulator[accumulator_index++] = speed_now;
-
-	if (accumulator_index >= accumulator_size) {
-		have_first_accumulated_speed = true;
-		accumulator_index = 0;
-	}
-
-	if (have_first_accumulated_speed) {
-		float total = 0;
-
-		for (int32_t i = 0; i < accumulator_size; ++i) {
-			total += accumulator[i];
-		}
-
-		mtc_speed = total / accumulator_size;
-
-	} else {
-
-		mtc_speed = speed_now;
-
-	}
-
-	if (mtc_speed == 0.0f) {
-
-		elapsed = 0;
-
-	} else {
-	
-		/* scale elapsed time by the current MTC speed */
-		
-		if (last.timestamp && (now > last.timestamp)) {
-			elapsed = (nframes_t) floor (mtc_speed * (now - last.timestamp));
-		} else {
-			elapsed = 0; /* XXX is this right? */
-		}
-	}
-
-	/* now add the most recent timecode value plus the estimated elapsed interval */
-
-	pos =  elapsed + last.position;
-
-	speed = mtc_speed;
-	return true;
-}
-
-ARDOUR::nframes_t
-MTC_Slave::resolution() const
-{
-	return (nframes_t) session.frames_per_smpte_frame();
-}
-
-void
-MTC_Slave::reset ()
-{
-	/* XXX massive thread safety issue here. MTC could
-	   be being updated as we call this. but this
-	   supposed to be a realtime-safe call.
-	*/
-	
-	port->input()->reset_mtc_state ();
-	
-	last_inbound_frame = 0;
-	current.guard1++;
-	current.position = 0;
-	current.timestamp = 0;
-	current.guard2++;
-	first_mtc_frame = 0;
-	first_mtc_time = 0;
-
-	accumulator_index = 0;
-	have_first_accumulated_speed = false;
-	mtc_speed = 0;
-}