remove empty sigc++2 directory

git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 0 insertions, 1489 deletions

diff --git a/libs/ardour/panner.cc b/libs/ardour/panner.cc
deleted file mode 100644
index ac8e4d05e3..0000000000
--- a/libs/ardour/panner.cc
+++ /dev/null
@@ -1,1489 +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.
-
-*/
-
-#define __STDC_FORMAT_MACROS 1
-#include <inttypes.h>
-
-#include <cmath>
-#include <cerrno>
-#include <fstream>
-#include <cstdlib>
-#include <string>
-#include <cstdio>
-#include <locale.h>
-#include <unistd.h>
-#include <float.h>
-
-#include <glibmm.h>
-
-#include <pbd/error.h>
-#include <pbd/failed_constructor.h>
-#include <pbd/xml++.h>
-#include <pbd/enumwriter.h>
-
-#include <ardour/session.h>
-#include <ardour/panner.h>
-#include <ardour/utils.h>
-
-#include <ardour/runtime_functions.h>
-#include <ardour/buffer_set.h>
-
-#include "i18n.h"
-
-#include <pbd/mathfix.h>
-
-using namespace std;
-using namespace ARDOUR;
-using namespace PBD;
-
-float Panner::current_automation_version_number = 1.0;
-
-string EqualPowerStereoPanner::name = "Equal Power Stereo";
-string Multi2dPanner::name = "Multiple (2D)";
-
-/* this is a default mapper of  control values to a pan position
-   others can be imagined. 
-*/
-
-static pan_t direct_control_to_pan (double fract) { 
-	return fract;
-}
-
-static double direct_pan_to_control (pan_t val) { 
-	return val;
-}
-
-StreamPanner::StreamPanner (Panner& p, Parameter param)
-	: parent (p)
-	, _control (new PanControllable(p.session(), X_("panner"), *this, param))
-{
-	assert(param.type() != NullAutomation);
-
-	_muted = false;
-
-	parent.session().add_controllable (_control);
-
-	x = 0.5;
-	y = 0.5;
-	z = 0.5;
-}
-
-StreamPanner::~StreamPanner ()
-{
-}
-
-void
-StreamPanner::PanControllable::set_value (float val)
-{
-	panner.set_position (direct_control_to_pan (val));
-}
-
-float
-StreamPanner::PanControllable::get_value (void) const
-{
-	float xpos;
-	panner.get_effective_position (xpos);
-	return direct_pan_to_control (xpos);
-}
-
-bool
-StreamPanner::PanControllable::can_send_feedback () const
-{
-	AutoState astate = panner.get_parent().automation_state ();
-
-	if ((astate == Play) || (astate == Touch && !panner.get_parent().touching())) {
-		return true;
-	}
-
-	return false;
-}
-
-void
-StreamPanner::set_muted (bool yn)
-{
-	if (yn != _muted) {
-		_muted = yn;
-		StateChanged ();
-	}
-}
-
-void
-StreamPanner::set_position (float xpos, bool link_call)
-{
-	if (!link_call && parent.linked()) {
-		parent.set_position (xpos, *this);
-	}
-
-	if (x != xpos) {
-		x = xpos;
-		update ();
-		Changed ();
-		_control->Changed ();
-	}
-}
-
-void
-StreamPanner::set_position (float xpos, float ypos, bool link_call)
-{
-	if (!link_call && parent.linked()) {
-		parent.set_position (xpos, ypos, *this);
-	}
-
-	if (x != xpos || y != ypos) {
-		
-		x = xpos;
-		y = ypos;
-		update ();
-		Changed ();
-	}
-}
-
-void
-StreamPanner::set_position (float xpos, float ypos, float zpos, bool link_call)
-{
-	if (!link_call && parent.linked()) {
-		parent.set_position (xpos, ypos, zpos, *this);
-	}
-
-	if (x != xpos || y != ypos || z != zpos) {
-		x = xpos;
-		y = ypos;
-		z = zpos;
-		update ();
-		Changed ();
-	}
-}
-
-int
-StreamPanner::set_state (const XMLNode& node)
-{
-	const XMLProperty* prop;
-	XMLNodeConstIterator iter;
-
-	if ((prop = node.property (X_("muted")))) {
-		set_muted (prop->value() == "yes");
-	}
-
-	return 0;
-}
-
-void
-StreamPanner::add_state (XMLNode& node)
-{
-	node.add_property (X_("muted"), (muted() ? "yes" : "no"));
-}
-
-/*---------------------------------------------------------------------- */
-
-BaseStereoPanner::BaseStereoPanner (Panner& p, Parameter param)
-	: StreamPanner (p, param)
-{
-}
-
-BaseStereoPanner::~BaseStereoPanner ()
-{
-}
-
-int
-BaseStereoPanner::load (istream& in, string path, uint32_t& linecnt)
-{
-	char line[128];
-	LocaleGuard lg (X_("POSIX"));
-	
-	_control->list()->clear ();
-
-	while (in.getline (line, sizeof (line), '\n')) {
-		nframes_t when;
-		double value;
-
-		++linecnt;
-
-		if (strcmp (line, "end") == 0) {
-			break;
-		}
-
-		if (sscanf (line, "%" PRIu32 " %lf", &when, &value) != 2) {
-			warning << string_compose(_("badly formatted pan automation event record at line %1 of %2 (ignored) [%3]"), linecnt, path, line) << endmsg;
-			continue;
-		}
-
-		_control->list()->fast_simple_add (when, value);
-	}
-
-	/* now that we are done loading */
-
-	_control->list()->StateChanged ();
-
-	return 0;
-}
-
-void
-BaseStereoPanner::distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
-{
-	assert(obufs.count().n_audio() == 2);
-
-	pan_t delta;
-	Sample* dst;
-	pan_t pan;
-
-	if (_muted) {
-		return;
-	}
-	
-	Sample* const src = srcbuf.data();
-
-	/* LEFT */
-
-	dst = obufs.get_audio(0).data();
-
-	if (fabsf ((delta = (left - desired_left))) > 0.002) { // about 1 degree of arc 
-		
-		/* interpolate over 64 frames or nframes, whichever is smaller */
-		
-		nframes_t limit = min ((nframes_t)64, nframes);
-		nframes_t n;
-
-		delta = -(delta / (float) (limit));
-		
-		for (n = 0; n < limit; n++) {
-			left_interp = left_interp + delta;
-			left = left_interp + 0.9 * (left - left_interp);
-			dst[n] += src[n] * left * gain_coeff;
-		}
-		
-		pan = left * gain_coeff;
-
-		mix_buffers_with_gain (dst+n,src+n,nframes-n,pan);
-		
-	} else {
-		
-		left = desired_left;
-		left_interp = left;
-
-		if ((pan = (left * gain_coeff)) != 1.0f) {
-			
-			if (pan != 0.0f) {
-				
-				mix_buffers_with_gain(dst,src,nframes,pan);
-
-				/* mark that we wrote into the buffer */
-
-				// obufs[0] = 0;
-
-			} 
-			
-		} else {
-			
-			mix_buffers_no_gain(dst,src,nframes);
-			
-			/* mark that we wrote into the buffer */
-			
-			// obufs[0] = 0;
-		}
-	}
-
-	/* RIGHT */
-
-	dst = obufs.get_audio(1).data();
-	
-	if (fabsf ((delta = (right - desired_right))) > 0.002) { // about 1 degree of arc 
-		
-		/* interpolate over 64 frames or nframes, whichever is smaller */
-		
-		nframes_t limit = min ((nframes_t)64, nframes);
-		nframes_t n;
-
-		delta = -(delta / (float) (limit));
-
-		for (n = 0; n < limit; n++) {
-			right_interp = right_interp + delta;
-			right = right_interp + 0.9 * (right - right_interp);
-			dst[n] += src[n] * right * gain_coeff;
-		}
-		
-		pan = right * gain_coeff;
-		
-		mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
-		
-		/* XXX it would be nice to mark the buffer as written to */
-
-	} else {
-
-		right = desired_right;
-		right_interp = right;
-		
-		if ((pan = (right * gain_coeff)) != 1.0f) {
-			
-			if (pan != 0.0f) {
-				
-				mix_buffers_with_gain(dst,src,nframes,pan);
-				
-				/* XXX it would be nice to mark the buffer as written to */
-			}
-			
-		} else {
-			
-			mix_buffers_no_gain(dst,src,nframes);
-			
-			/* XXX it would be nice to mark the buffer as written to */
-		}
-	}
-}
-
-/*---------------------------------------------------------------------- */
-
-EqualPowerStereoPanner::EqualPowerStereoPanner (Panner& p, Parameter param)
-	: BaseStereoPanner (p, param)
-{
-	update ();
-
-	left = desired_left;
-	right = desired_right;
-	left_interp = left;
-	right_interp = right;
-}
-
-EqualPowerStereoPanner::~EqualPowerStereoPanner ()
-{
-}
-
-void
-EqualPowerStereoPanner::update ()
-{
-	/* it would be very nice to split this out into a virtual function
-	   that can be accessed from BaseStereoPanner and used in distribute_automated().
-	   
-	   but the place where its used in distribute_automated() is a tight inner loop,
-	   and making "nframes" virtual function calls to compute values is an absurd
-	   overhead.
-	*/
-
-	/* x == 0 => hard left
-	   x == 1 => hard right
-	*/
-
-	float panR = x;
-	float panL = 1 - panR;
-
-	const float pan_law_attenuation = -3.0f;
-	const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
-	
-	desired_left = panL * (scale * panL + 1.0f - scale);
-	desired_right = panR * (scale * panR + 1.0f - scale);
-
-	effective_x = x;
-	_control->set_value(x);
-}
-
-void
-EqualPowerStereoPanner::distribute_automated (AudioBuffer& srcbuf, BufferSet& obufs, 
-					      nframes_t start, nframes_t end, nframes_t nframes,
-					      pan_t** buffers)
-{
-	assert(obufs.count().n_audio() == 2);
-
-	Sample* dst;
-	pan_t* pbuf;
-	Sample* const src = srcbuf.data();
-
-	/* fetch positional data */
-
-	if (!_control->list()->curve().rt_safe_get_vector (start, end, buffers[0], nframes)) {
-		/* fallback */
-		if (!_muted) {
-			distribute (srcbuf, obufs, 1.0, nframes);
-		}
-		return;
-	}
-
-	/* store effective pan position. do this even if we are muted */
-
-	if (nframes > 0) {
-		effective_x = buffers[0][nframes-1];
-		_control->set_value(effective_x); // signal, update UI
-	}
-
-	if (_muted) {
-		return;
-	}
-
-	/* apply pan law to convert positional data into pan coefficients for
-	   each buffer (output)
-	*/
-
-	const float pan_law_attenuation = -3.0f;
-	const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
-
-	for (nframes_t n = 0; n < nframes; ++n) {
-
-		float panR = buffers[0][n];
-		float panL = 1 - panR;
-		
-		buffers[0][n] = panL * (scale * panL + 1.0f - scale);
-		buffers[1][n] = panR * (scale * panR + 1.0f - scale);
-	}
-
-	/* LEFT */
-
-	dst = obufs.get_audio(0).data();
-	pbuf = buffers[0];
-	
-	for (nframes_t n = 0; n < nframes; ++n) {
-		dst[n] += src[n] * pbuf[n];
-	}	
-
-	/* XXX it would be nice to mark the buffer as written to */
-
-	/* RIGHT */
-
-	dst = obufs.get_audio(1).data();
-	pbuf = buffers[1];
-
-	for (nframes_t n = 0; n < nframes; ++n) {
-		dst[n] += src[n] * pbuf[n];
-	}	
-	
-	/* XXX it would be nice to mark the buffer as written to */
-}
-
-StreamPanner*
-EqualPowerStereoPanner::factory (Panner& parent, Parameter param)
-{
-	return new EqualPowerStereoPanner (parent, param);
-}
-
-XMLNode&
-EqualPowerStereoPanner::get_state (void)
-{
-	return state (true);
-}
-
-XMLNode&
-EqualPowerStereoPanner::state (bool full_state)
-{
-	XMLNode* root = new XMLNode ("StreamPanner");
-	char buf[64];
-	LocaleGuard lg (X_("POSIX"));
-
-	snprintf (buf, sizeof (buf), "%.12g", x); 
-	root->add_property (X_("x"), buf);
-	root->add_property (X_("type"), EqualPowerStereoPanner::name);
-
-	XMLNode* autonode = new XMLNode (X_("Automation"));
-	autonode->add_child_nocopy (_control->list()->state (full_state));
-	root->add_child_nocopy (*autonode);
-
-	StreamPanner::add_state (*root);
-
-	root->add_child_nocopy (_control->get_state ());
-
-	return *root;
-}
-
-int
-EqualPowerStereoPanner::set_state (const XMLNode& node)
-{
-	const XMLProperty* prop;
-	float pos;
-	LocaleGuard lg (X_("POSIX"));
-
-	if ((prop = node.property (X_("x")))) {
-		pos = atof (prop->value().c_str());
-		set_position (pos, true);
-	} 
-
-	StreamPanner::set_state (node);
-
-	for (XMLNodeConstIterator iter = node.children().begin(); iter != node.children().end(); ++iter) {
-
-		if ((*iter)->name() == X_("controllable")) {
-			if ((prop = (*iter)->property("name")) != 0 && prop->value() == "panner") {
-				_control->set_state (**iter);
-			}
-
-		} else if ((*iter)->name() == X_("Automation")) {
-
-			_control->list()->set_state (*((*iter)->children().front()));
-
-			if (_control->list()->automation_state() != Off) {
-				set_position (_control->list()->eval (parent.session().transport_frame()));
-			}
-		}
-	}
-
-	return 0;
-}
-
-/*----------------------------------------------------------------------*/
-
-Multi2dPanner::Multi2dPanner (Panner& p, Parameter param)
-	: StreamPanner (p, param)
-{
-	update ();
-}
-
-Multi2dPanner::~Multi2dPanner ()
-{
-}
-
-void
-Multi2dPanner::update ()
-{
-	static const float BIAS = FLT_MIN;
-	uint32_t i;
-	uint32_t nouts = parent.outputs.size();
-	float dsq[nouts];
-	float f, fr;
-	vector<pan_t> pans;
-
-	f = 0.0f;
-
-	for (i = 0; i < nouts; i++) {
-		dsq[i] = ((x - parent.outputs[i].x) * (x - parent.outputs[i].x) + (y - parent.outputs[i].y) * (y - parent.outputs[i].y) + BIAS);
-		if (dsq[i] < 0.0) {
-			dsq[i] = 0.0;
-		}
-		f += dsq[i] * dsq[i];
-	}
-#ifdef __APPLE__
-	// terrible hack to support OSX < 10.3.9 builds
-	fr = (float) (1.0 / sqrt((double)f));
-#else
-	fr = 1.0 / sqrtf(f);
-#endif	
-	for (i = 0; i < nouts; ++i) {
-		parent.outputs[i].desired_pan = 1.0f - (dsq[i] * fr);
-	}
-
-	effective_x = x;
-	_control->set_value(x);
-}
-
-void
-Multi2dPanner::distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
-{
-	Sample* dst;
-	pan_t pan;
-	vector<Panner::Output>::iterator o;
-	uint32_t n;
-
-	if (_muted) {
-		return;
-	}
-	
-	Sample* const src = srcbuf.data();
-
-
-	for (n = 0, o = parent.outputs.begin(); o != parent.outputs.end(); ++o, ++n) {
-
-		dst = obufs.get_audio(n).data();
-	
-#ifdef CAN_INTERP
-		if (fabsf ((delta = (left_interp - desired_left))) > 0.002) { // about 1 degree of arc 
-			
-			/* interpolate over 64 frames or nframes, whichever is smaller */
-			
-			nframes_t limit = min ((nframes_t)64, nframes);
-			nframes_t n;
-			
-			delta = -(delta / (float) (limit));
-		
-			for (n = 0; n < limit; n++) {
-				left_interp = left_interp + delta;
-				left = left_interp + 0.9 * (left - left_interp);
-				dst[n] += src[n] * left * gain_coeff;
-			}
-			
-			pan = left * gain_coeff;
-			mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
-			
-		} else {
-
-#else			
-			pan = (*o).desired_pan;
-			
-			if ((pan *= gain_coeff) != 1.0f) {
-				
-				if (pan != 0.0f) {
-					mix_buffers_with_gain(dst,src,nframes,pan);
-				} 
-			} else {
-					mix_buffers_no_gain(dst,src,nframes);
-			}
-#endif
-#ifdef CAN_INTERP
-		}
-#endif
-	}
-	
-	return;
-}
-
-void
-Multi2dPanner::distribute_automated (AudioBuffer& src, BufferSet& obufs, 
-				     nframes_t start, nframes_t end, nframes_t nframes,
-				     pan_t** buffers)
-{
-	if (_muted) {
-		return;
-	}
-
-	/* what ? */
-
-	return;
-}
-
-StreamPanner*
-Multi2dPanner::factory (Panner& p, Parameter param)
-{
-	return new Multi2dPanner (p, param);
-}
-
-int
-Multi2dPanner::load (istream& in, string path, uint32_t& linecnt)
-{
-	return 0;
-}
-
-XMLNode&
-Multi2dPanner::get_state (void)
-{
-	return state (true);
-}
-
-XMLNode&
-Multi2dPanner::state (bool full_state)
-{
-	XMLNode* root = new XMLNode ("StreamPanner");
-	char buf[64];
-	LocaleGuard lg (X_("POSIX"));
-
-	snprintf (buf, sizeof (buf), "%.12g", x); 
-	root->add_property (X_("x"), buf);
-	snprintf (buf, sizeof (buf), "%.12g", y); 
-	root->add_property (X_("y"), buf);
-	root->add_property (X_("type"), Multi2dPanner::name);
-
-	/* XXX no meaningful automation yet */
-
-	return *root;
-}
-
-int
-Multi2dPanner::set_state (const XMLNode& node)
-{
-	const XMLProperty* prop;
-	float newx,newy;
-	LocaleGuard lg (X_("POSIX"));
-
-	newx = -1;
-	newy = -1;
-
-	if ((prop = node.property (X_("x")))) {
-		newx = atof (prop->value().c_str());
-	}
-       
-	if ((prop = node.property (X_("y")))) {
-		newy = atof (prop->value().c_str());
-	}
-	
-	if (x < 0 || y < 0) {
-		error << _("badly-formed positional data for Multi2dPanner - ignored")
-		      << endmsg;
-		return -1;
-	} 
-	
-	set_position (newx, newy);
-	return 0;
-}
-
-/*---------------------------------------------------------------------- */
-
-Panner::Panner (string name, Session& s)
-	: _session (s)
-{
-	set_name (name);
-
-	_linked = false;
-	_link_direction = SameDirection;
-	_bypassed = false;
-}
-
-Panner::~Panner ()
-{
-}
-
-void
-Panner::set_linked (bool yn)
-{
-	if (yn != _linked) {
-		_linked = yn;
-		_session.set_dirty ();
-		LinkStateChanged (); /* EMIT SIGNAL */
-	}
-}
-
-void
-Panner::set_link_direction (LinkDirection ld)
-{
-	if (ld != _link_direction) {
-		_link_direction = ld;
-		_session.set_dirty ();
-		LinkStateChanged (); /* EMIT SIGNAL */
-	}
-}
-
-void
-Panner::set_bypassed (bool yn)
-{
-	if (yn != _bypassed) {
-		_bypassed = yn;
-		StateChanged ();
-	}
-}
-
-
-void
-Panner::reset (uint32_t nouts, uint32_t npans)
-{
-	uint32_t n;
-	bool changed = false;
-
-	if (nouts < 2 || (nouts == outputs.size() && npans == size())) {
-		return;
-	} 
-
-	n = size();
-	clear ();
-
-	if (n != npans) {
-		changed = true;
-	}
-
-	n = outputs.size();
-	outputs.clear ();
-
-	if (n != nouts) {
-		changed = true;
-	}
-
-	switch (nouts) {
-	case 0:
-		break;
-
-	case 1:
-		fatal << _("programming error:")
-		      << X_("Panner::reset() called with a single output")
-		      << endmsg;
-		/*NOTREACHED*/
-		break;
-
-	case 2:
-		/* line */
-		outputs.push_back (Output (0, 0));
-		outputs.push_back (Output (1.0, 0));
-
-		for (n = 0; n < npans; ++n) {
-			push_back (new EqualPowerStereoPanner (*this, Parameter(PanAutomation, n)));
-		}
-		break;
-
-	case 3: // triangle
-		outputs.push_back (Output  (0.5, 0));
-		outputs.push_back (Output  (0, 1.0));
-		outputs.push_back (Output  (1.0, 1.0));
-
-		for (n = 0; n < npans; ++n) {
-			push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
-		}
-
-		break; 
-
-	case 4: // square
-		outputs.push_back (Output  (0, 0));
-		outputs.push_back (Output  (1.0, 0));
-		outputs.push_back (Output  (1.0, 1.0));
-		outputs.push_back (Output  (0, 1.0));
-
-		for (n = 0; n < npans; ++n) {
-			push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
-		}
-
-		break;	
-
-	case 5: //square+offcenter center
-		outputs.push_back (Output  (0, 0));
-		outputs.push_back (Output  (1.0, 0));
-		outputs.push_back (Output  (1.0, 1.0));
-		outputs.push_back (Output  (0, 1.0));
-		outputs.push_back (Output  (0.5, 0.75));
-
-		for (n = 0; n < npans; ++n) {
-			push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
-		}
-
-		break;
-
-	default:
-		/* XXX horrible placement. FIXME */
-		for (n = 0; n < nouts; ++n) {
-			outputs.push_back (Output (0.1 * n, 0.1 * n));
-		}
-
-		for (n = 0; n < npans; ++n) {
-			push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
-		}
-
-		break;
-	}
-
-	for (iterator x = begin(); x != end(); ++x) {
-		(*x)->update ();
-	}
-
-	/* force hard left/right panning in a common case: 2in/2out 
-	*/
-	
-	if (npans == 2 && outputs.size() == 2) {
-
-		/* Do this only if we changed configuration, or our configuration
-		   appears to be the default set up (center).
-		*/
-
-		float left;
-		float right;
-
-		front()->get_position (left);
-		back()->get_position (right);
-
-		if (changed || ((left == 0.5) && (right == 0.5))) {
-		
-			front()->set_position (0.0);
-			front()->pan_control()->list()->reset_default (0.0);
-			
-			back()->set_position (1.0);
-			back()->pan_control()->list()->reset_default (1.0);
-			
-			changed = true;
-		}
-	}
-
-	if (changed) {
-		Changed (); /* EMIT SIGNAL */
-	}
-
-	return;
-}
-
-void
-Panner::remove (uint32_t which)
-{
-	vector<StreamPanner*>::iterator i;
-	for (i = begin(); i != end() && which; ++i, --which);
-
-	if (i != end()) {
-		delete *i;
-		erase (i);
-	}
-}
-
-void
-Panner::clear ()
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		delete *i;
-	}
-
-	vector<StreamPanner*>::clear ();
-}
-
-void
-Panner::set_automation_style (AutoStyle style)
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		(*i)->pan_control()->list()->set_automation_style (style);
-	}
-	_session.set_dirty ();
-}	
-
-void
-Panner::set_automation_state (AutoState state)
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		(*i)->pan_control()->list()->set_automation_state (state);
-	}
-	_session.set_dirty ();
-}	
-
-AutoState
-Panner::automation_state () const
-{
-	if (!empty()) {
-		return front()->pan_control()->list()->automation_state ();
-	} else {
-		return Off;
-	}
-}
-
-AutoStyle
-Panner::automation_style () const
-{
-	if (!empty()) {
-		return front()->pan_control()->list()->automation_style ();
-	} else {
-		return Absolute;
-	}
-}
-
-void
-Panner::transport_stopped (nframes_t frame)
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		(*i)->pan_control()->list()->reposition_for_rt_add (frame);
-	}
-}	
-
-void
-Panner::snapshot (nframes_t now)
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		boost::shared_ptr<AutomationList> list = (*i)->pan_control()->list();
-		if (list->automation_write())
-			list->rt_add(now, (*i)->pan_control()->get_value());
-	}
-}	
-
-void
-Panner::clear_automation ()
-{
-	for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-		(*i)->pan_control()->list()->clear ();
-	}
-	_session.set_dirty ();
-}	
-
-struct PanPlugins {
-    string name;
-    uint32_t nouts;
-    StreamPanner* (*factory)(Panner&, Parameter);
-};
-
-PanPlugins pan_plugins[] = {
-	{ EqualPowerStereoPanner::name, 2, EqualPowerStereoPanner::factory },
-	{ Multi2dPanner::name, 3, Multi2dPanner::factory },
-	{ string (""), 0, 0 }
-};
-
-XMLNode&
-Panner::get_state (void)
-{
-	return state (true);
-}
-
-XMLNode&
-Panner::state (bool full)
-{
-	XMLNode* root = new XMLNode (X_("Panner"));
-	char buf[32];
-
-	root->add_property (X_("linked"), (_linked ? "yes" : "no"));
-	root->add_property (X_("link_direction"), enum_2_string (_link_direction));
-	root->add_property (X_("bypassed"), (bypassed() ? "yes" : "no"));
-
-	/* add each output */
-
-	for (vector<Panner::Output>::iterator o = outputs.begin(); o != outputs.end(); ++o) {
-		XMLNode* onode = new XMLNode (X_("Output"));
-		snprintf (buf, sizeof (buf), "%.12g", (*o).x);
-		onode->add_property (X_("x"), buf);
-		snprintf (buf, sizeof (buf), "%.12g", (*o).y);
-		onode->add_property (X_("y"), buf);
-		root->add_child_nocopy (*onode);
-	}
-
-	for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
-		root->add_child_nocopy ((*i)->state (full));
-	}
-
-	return *root;
-}
-
-int
-Panner::set_state (const XMLNode& node)
-{
-	XMLNodeList nlist;
-	XMLNodeConstIterator niter;
-	const XMLProperty *prop;
-	uint32_t i;
-	StreamPanner* sp;
-	LocaleGuard lg (X_("POSIX"));
-
-	clear ();
-	outputs.clear ();
-
-	if ((prop = node.property (X_("linked"))) != 0) {
-		set_linked (prop->value() == "yes");
-	}
-
-
-	if ((prop = node.property (X_("bypassed"))) != 0) {
-		set_bypassed (prop->value() == "yes");
-	}
-
-	if ((prop = node.property (X_("link_direction"))) != 0) {
-		LinkDirection ld; /* here to provide type information */
-		set_link_direction (LinkDirection (string_2_enum (prop->value(), ld)));
-	}
-
-	nlist = node.children();
-
-	for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
-		if ((*niter)->name() == X_("Output")) {
-			
-			float x, y;
-			
-			prop = (*niter)->property (X_("x"));
-			sscanf (prop->value().c_str(), "%g", &x);
-			
-			prop = (*niter)->property (X_("y"));
-			sscanf (prop->value().c_str(), "%g", &y);
-			
-			outputs.push_back (Output (x, y));
-		}
-	}
-
-	for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
-
-		if ((*niter)->name() == X_("StreamPanner")) {
-		
-			if ((prop = (*niter)->property (X_("type")))) {
-				
-				for (i = 0; pan_plugins[i].factory; ++i) {
-					if (prop->value() == pan_plugins[i].name) {
-						
-						
-						/* note that we assume that all the stream panners
-						   are of the same type. pretty good
-						   assumption, but its still an assumption.
-						*/
-						
-						sp = pan_plugins[i].factory (*this, Parameter(PanAutomation, 0));
-						
-						if (sp->set_state (**niter) == 0) {
-							push_back (sp);
-						}
-						
-						break;
-					}
-				}
-				
-				
-				if (!pan_plugins[i].factory) {
-					error << string_compose (_("Unknown panner plugin \"%1\" found in pan state - ignored"),
-							  prop->value())
-					      << endmsg;
-				}
-
-			} else {
-				error << _("panner plugin node has no type information!")
-				      << endmsg;
-				return -1;
-			}
-
-		} 	
-	}
-
-	/* don't try to do old-school automation loading if it wasn't marked as existing */
-
-	if ((prop = node.property (X_("automation")))) {
-
-		/* automation path is relative */
-		
-		automation_path = _session.automation_dir();
-		automation_path += prop->value ();
-	} 
-
-	return 0;
-}
-
-
-
-bool
-Panner::touching () const
-{
-	for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
-		if ((*i)->pan_control()->list()->touching ()) {
-			return true;
-		}
-	}
-
-	return false;
-}
-
-void
-Panner::set_position (float xpos, StreamPanner& orig)
-{
-	float xnow;
-	float xdelta ;
-	float xnew;
-
-	orig.get_position (xnow);
-	xdelta = xpos - xnow;
-	
-	if (_link_direction == SameDirection) {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, true);
-			} else {
-				(*i)->get_position (xnow);
-				xnew = min (1.0f, xnow + xdelta);
-				xnew = max (0.0f, xnew);
-				(*i)->set_position (xnew, true);
-			}
-		}
-
-	} else {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, true);
-			} else {
-				(*i)->get_position (xnow);
-				xnew = min (1.0f, xnow - xdelta);
-				xnew = max (0.0f, xnew);
-				(*i)->set_position (xnew, true);
-			}
-		}
-	}
-}
-
-void
-Panner::set_position (float xpos, float ypos, StreamPanner& orig)
-{
-	float xnow, ynow;
-	float xdelta, ydelta;
-	float xnew, ynew;
-
-	orig.get_position (xnow, ynow);
-	xdelta = xpos - xnow;
-	ydelta = ypos - ynow;
-	
-	if (_link_direction == SameDirection) {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, ypos, true);
-			} else {
-				(*i)->get_position (xnow, ynow);
-
-				xnew = min (1.0f, xnow + xdelta);
-				xnew = max (0.0f, xnew);
-
-				ynew = min (1.0f, ynow + ydelta);
-				ynew = max (0.0f, ynew);
-
-				(*i)->set_position (xnew, ynew, true);
-			}
-		}
-
-	} else {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, ypos, true);
-			} else {
-				(*i)->get_position (xnow, ynow);
-				
-				xnew = min (1.0f, xnow - xdelta);
-				xnew = max (0.0f, xnew);
-
-				ynew = min (1.0f, ynow - ydelta);
-				ynew = max (0.0f, ynew);
-
-				(*i)->set_position (xnew, ynew, true);
-			}
-		}
-	}
-}
-
-void
-Panner::set_position (float xpos, float ypos, float zpos, StreamPanner& orig)
-{
-	float xnow, ynow, znow;
-	float xdelta, ydelta, zdelta;
-	float xnew, ynew, znew;
-
-	orig.get_position (xnow, ynow, znow);
-	xdelta = xpos - xnow;
-	ydelta = ypos - ynow;
-	zdelta = zpos - znow;
-
-	if (_link_direction == SameDirection) {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, ypos, zpos, true);
-			} else {
-				(*i)->get_position (xnow, ynow, znow);
-				
-				xnew = min (1.0f, xnow + xdelta);
-				xnew = max (0.0f, xnew);
-
-				ynew = min (1.0f, ynow + ydelta);
-				ynew = max (0.0f, ynew);
-
-				znew = min (1.0f, znow + zdelta);
-				znew = max (0.0f, znew);
-
-				(*i)->set_position (xnew, ynew, znew, true);
-			}
-		}
-
-	} else {
-
-		for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
-			if (*i == &orig) {
-				(*i)->set_position (xpos, ypos, true);
-			} else {
-				(*i)->get_position (xnow, ynow, znow);
-
-				xnew = min (1.0f, xnow - xdelta);
-				xnew = max (0.0f, xnew);
-
-				ynew = min (1.0f, ynow - ydelta);
-				ynew = max (0.0f, ynew);
-
-				znew = min (1.0f, znow + zdelta);
-				znew = max (0.0f, znew);
-
-				(*i)->set_position (xnew, ynew, znew, true);
-			}
-		}
-	}
-}
-
-void
-Panner::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, nframes_t nframes, nframes_t offset, gain_t gain_coeff)
-{
-	if (outbufs.count().n_audio() == 0) {
-		// Don't want to lose audio...
-		assert(inbufs.count().n_audio() == 0);
-		return;
-	}
-
-	// We shouldn't be called in the first place...
-	assert(!bypassed());
-	assert(!empty());
-
-	
-	if (outbufs.count().n_audio() == 1) {
-
-		AudioBuffer& dst = outbufs.get_audio(0);
-
-		if (gain_coeff == 0.0f) {
-
-			/* only one output, and gain was zero, so make it silent */
-
-			dst.silence(offset);
-			
-		} else if (gain_coeff == 1.0f){
-
-			/* mix all buffers into the output */
-
-			// copy the first
-			dst.read_from(inbufs.get_audio(0), nframes, offset);
-			
-			// accumulate starting with the second
-			BufferSet::audio_iterator i = inbufs.audio_begin();
-			for (++i; i != inbufs.audio_end(); ++i) {
-				dst.accumulate_from(*i, nframes, offset);
-			}
-
-		} else {
-
-			/* mix all buffers into the output, scaling them all by the gain */
-
-			// copy the first
-			dst.read_from(inbufs.get_audio(0), nframes, offset);
-			
-			// accumulate (with gain) starting with the second
-			BufferSet::audio_iterator i = inbufs.audio_begin();
-			for (++i; i != inbufs.audio_end(); ++i) {
-				dst.accumulate_with_gain_from(*i, nframes, offset, gain_coeff);
-			}
-
-		}
-
-		return;
-	}
-	
-	/* the terrible silence ... */
-	for (BufferSet::audio_iterator i = outbufs.audio_begin(); i != outbufs.audio_end(); ++i) {
-		i->silence(nframes, offset);
-	}
-
-	BufferSet::audio_iterator i = inbufs.audio_begin();
-
-	for (iterator pan = begin(); pan != end() && i != inbufs.audio_end(); ++pan, ++i) {
-		(*pan)->distribute (*i, outbufs, gain_coeff, nframes);
-	}
-}
-
-void
-Panner::distribute (BufferSet& inbufs, BufferSet& outbufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset)
-{	
-	if (outbufs.count().n_audio() == 0) {
-		// Failing to deliver audio we were asked to deliver is a bug
-		assert(inbufs.count().n_audio() == 0);
-		return;
-	}
-
-	// We shouldn't be called in the first place...
-	assert(!bypassed());
-	assert(!empty());
-
-	// If we shouldn't play automation defer to distribute_no_automation
-	if ( !( automation_state() & Play ||
-			 ((automation_state() & Touch) && !touching()) ) ) {
-
-		// Speed quietning
-		gain_t gain_coeff = 1.0;
-		if (fabsf(_session.transport_speed()) > 1.5f) {
-			gain_coeff = speed_quietning;
-		}
-
-		distribute_no_automation(inbufs, outbufs, nframes, offset, gain_coeff);
-		return;
-	}
-
-	// Otherwise.. let the automation flow, baby
-	
-	if (outbufs.count().n_audio() == 1) {
-
-		AudioBuffer& dst = outbufs.get_audio(0);
-
-		// FIXME: apply gain automation?
-
-		// copy the first
-		dst.read_from(inbufs.get_audio(0), nframes, offset);
-
-		// accumulate starting with the second
-		BufferSet::audio_iterator i = inbufs.audio_begin();
-		for (++i; i != inbufs.audio_end(); ++i) {
-			dst.accumulate_from(*i, nframes, offset);
-		}
-
-		return;
-	}
-
-	// More than 1 output, we should have 1 panner for each input
-	assert(size() == inbufs.count().n_audio());
-	
-	/* the terrible silence ... */
-	for (BufferSet::audio_iterator i = outbufs.audio_begin(); i != outbufs.audio_end(); ++i) {
-		i->silence(nframes, offset);
-	}
-
-	BufferSet::audio_iterator i = inbufs.audio_begin();
-	for (iterator pan = begin(); pan != end(); ++pan, ++i) {
-		(*pan)->distribute_automated (*i, outbufs, start_frame, end_frame, nframes, _session.pan_automation_buffer());
-	}
-}
-
-/* old school automation handling */
-
-void
-Panner::set_name (string str)
-{
-	automation_path = _session.automation_dir();
-	automation_path += _session.snap_name();
-	automation_path += "-pan-";
-	automation_path += legalize_for_path (str);
-	automation_path += ".automation";
-}
-
-int
-Panner::load ()
-{
-	char line[128];
-	uint32_t linecnt = 0;
-	float version;
-	iterator sp;
-	LocaleGuard lg (X_("POSIX"));
-
-	if (automation_path.length() == 0) {
-		return 0;
-	}
-	
-	if (access (automation_path.c_str(), F_OK)) {
-		return 0;
-	}
-
-	ifstream in (automation_path.c_str());
-
-	if (!in) {
-		error << string_compose (_("cannot open pan automation file %1 (%2)"),
-				  automation_path, strerror (errno))
-		      << endmsg;
-		return -1;
-	}
-
-	sp = begin();
-
-	while (in.getline (line, sizeof(line), '\n')) {
-
-		if (++linecnt == 1) {
-			if (memcmp (line, X_("version"), 7) == 0) {
-				if (sscanf (line, "version %f", &version) != 1) {
-					error << string_compose(_("badly formed version number in pan automation event file \"%1\""), automation_path) << endmsg;
-					return -1;
-				}
-			} else {
-				error << string_compose(_("no version information in pan automation event file \"%1\" (first line = %2)"), 
-						 automation_path, line) << endmsg;
-				return -1;
-			}
-
-			continue;
-		}
-
-		if (strlen (line) == 0 || line[0] == '#') {
-			continue;
-		}
-
-		if (strcmp (line, "begin") == 0) {
-			
-			if (sp == end()) {
-				error << string_compose (_("too many panner states found in pan automation file %1"),
-						  automation_path)
-				      << endmsg;
-				return -1;
-			}
-
-			if ((*sp)->load (in, automation_path, linecnt)) {
-				return -1;
-			}
-			
-			++sp;
-		}
-	}
-
-	return 0;
-}