/*
- Copyright (C) 2012 Paul Davis
+ Copyright (C) 2012 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
#include "vbap.h"
#include "vbap_speakers.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace PBD;
using namespace ARDOUR;
static PanPluginDescriptor _descriptor = {
"VBAP 2D panner",
+ "http://ardour.org/plugin/panner_vbap",
+ "http://ardour.org/plugin/panner_vbap#ui",
-1, -1,
+ 1000,
VBAPanner::factory
};
VBAPanner::Signal::resize_gains (uint32_t n)
{
gains.assign (n, 0.0);
-}
+}
VBAPanner::VBAPanner (boost::shared_ptr<Pannable> p, boost::shared_ptr<Speakers> s)
: Panner (p)
, _speakers (new VBAPSpeakers (s))
{
_pannable->pan_azimuth_control->Changed.connect_same_thread (*this, boost::bind (&VBAPanner::update, this));
+ _pannable->pan_elevation_control->Changed.connect_same_thread (*this, boost::bind (&VBAPanner::update, this));
_pannable->pan_width_control->Changed.connect_same_thread (*this, boost::bind (&VBAPanner::update, this));
+ if (!_pannable->has_state()) {
+ reset();
+ }
update ();
}
for (uint32_t i = 0; i < n; ++i) {
Signal* s = new Signal (_pannable->session(), *this, i, _speakers->n_speakers());
_signals.push_back (s);
-
+
}
update ();
void
VBAPanner::update ()
{
- /* recompute signal directions based on panner azimuth and, if relevant, width (diffusion) parameters)
- */
-
- /* panner azimuth control is [0 .. 1.0] which we interpret as [0 .. 360] degrees
- */
- double center = _pannable->pan_azimuth_control->get_value() * 360.0;
+ /* recompute signal directions based on panner azimuth and, if relevant, width (diffusion) and elevation parameters */
+ double elevation = _pannable->pan_elevation_control->get_value() * 90.0;
if (_signals.size() > 1) {
+ double w = - (_pannable->pan_width_control->get_value());
+ double signal_direction = 1.0 - (_pannable->pan_azimuth_control->get_value() + (w/2));
+ double grd_step_per_signal = w / (_signals.size() - 1);
+ for (vector<Signal*>::iterator s = _signals.begin(); s != _signals.end(); ++s) {
- /* panner width control is [-1.0 .. 1.0]; we ignore sign, and map to [0 .. 360] degrees
- so that a width of 1 corresponds to a signal equally present from all directions,
- and a width of zero corresponds to a point source from the "center" (above) point
- on the perimeter of the speaker array.
- */
-
- double w = fabs (_pannable->pan_width_control->get_value()) * 360.0;
-
- double min_dir = center - (w/2.0);
- if (min_dir < 0) {
- min_dir = 360.0 + min_dir; // its already negative
- }
- min_dir = max (min (min_dir, 360.0), 0.0);
-
- double max_dir = center + (w/2.0);
- if (max_dir > 360.0) {
- max_dir = max_dir - 360.0;
- }
- max_dir = max (min (max_dir, 360.0), 0.0);
-
- if (max_dir < min_dir) {
- swap (max_dir, min_dir);
- }
-
- double degree_step_per_signal = (max_dir - min_dir) / (_signals.size() - 1);
- double signal_direction = min_dir;
-
- if (w >= 0.0) {
+ Signal* signal = *s;
- /* positive width - normal order of signal spread */
+ int over = signal_direction;
+ over -= (signal_direction >= 0) ? 0 : 1;
+ signal_direction -= (double)over;
- for (vector<Signal*>::iterator s = _signals.begin(); s != _signals.end(); ++s) {
-
- Signal* signal = *s;
-
- signal->direction = AngularVector (signal_direction, 0.0);
- compute_gains (signal->desired_gains, signal->desired_outputs, signal->direction.azi, signal->direction.ele);
- signal_direction += degree_step_per_signal;
- }
- } else {
-
- /* inverted width - reverse order of signal spread */
-
- for (vector<Signal*>::reverse_iterator s = _signals.rbegin(); s != _signals.rend(); ++s) {
-
- Signal* signal = *s;
-
- signal->direction = AngularVector (signal_direction, 0.0);
- compute_gains (signal->desired_gains, signal->desired_outputs, signal->direction.azi, signal->direction.ele);
- signal_direction += degree_step_per_signal;
- }
+ signal->direction = AngularVector (signal_direction * 360.0, elevation);
+ compute_gains (signal->desired_gains, signal->desired_outputs, signal->direction.azi, signal->direction.ele);
+ signal_direction += grd_step_per_signal;
}
-
} else if (_signals.size() == 1) {
+ double center = (1.0 - _pannable->pan_azimuth_control->get_value()) * 360.0;
/* width has no role to play if there is only 1 signal: VBAP does not do "diffusion" of a single channel */
Signal* s = _signals.front();
- s->direction = AngularVector (center, 0);
+ s->direction = AngularVector (center, elevation);
compute_gains (s->desired_gains, s->desired_outputs, s->direction.azi, s->direction.ele);
}
+
+ SignalPositionChanged(); /* emit */
}
-void
-VBAPanner::compute_gains (double gains[3], int speaker_ids[3], int azi, int ele)
+void
+VBAPanner::compute_gains (double gains[3], int speaker_ids[3], int azi, int ele)
{
/* calculates gain factors using loudspeaker setup and given direction */
double cartdir[3];
int i,j,k;
double small_g;
double big_sm_g, gtmp[3];
+ const int dimension = _speakers->dimension();
+ assert(dimension == 2 || dimension == 3);
- spherical_to_cartesian (azi, ele, 1.0, cartdir[0], cartdir[1], cartdir[2]);
+ spherical_to_cartesian (azi, ele, 1.0, cartdir[0], cartdir[1], cartdir[2]);
big_sm_g = -100000.0;
gains[0] = gains[1] = gains[2] = 0;
small_g = 10000000.0;
- for (j = 0; j < _speakers->dimension(); j++) {
+ for (j = 0; j < dimension; j++) {
gtmp[j] = 0.0;
- for (k = 0; k < _speakers->dimension(); k++) {
- gtmp[j] += cartdir[k] * _speakers->matrix(i)[j*_speakers->dimension()+k];
+ for (k = 0; k < dimension; k++) {
+ gtmp[j] += cartdir[k] * _speakers->matrix(i)[j * dimension + k];
}
if (gtmp[j] < small_g) {
big_sm_g = small_g;
- gains[0] = gtmp[0];
- gains[1] = gtmp[1];
+ gains[0] = gtmp[0];
+ gains[1] = gtmp[1];
speaker_ids[0] = _speakers->speaker_for_tuple (i, 0);
speaker_ids[1] = _speakers->speaker_for_tuple (i, 1);
}
}
}
-
+
power = sqrt (gains[0]*gains[0] + gains[1]*gains[1] + gains[2]*gains[2]);
if (power > 0) {
- gains[0] /= power;
+ gains[0] /= power;
gains[1] /= power;
gains[2] /= power;
}
assert (sz == obufs.count().n_audio());
int8_t *outputs = (int8_t*)alloca(sz); // on the stack, no malloc
-
+
/* set initial state of each output "record"
*/
if (signal->outputs[o] != -1) {
/* used last time */
outputs[signal->outputs[o]] |= 1;
- }
+ }
if (signal->desired_outputs[o] != -1) {
/* used this time */
outputs[signal->desired_outputs[o]] |= 1<<1;
- }
+ }
}
/* at this point, we can test a speaker's status:
(*outputs[o] & 2) <= in use this time
(*outputs[o] & 3) == 3 <= in use both times
*outputs[o] == 0 <= not in use either time
-
+
*/
for (int o = 0; o < 3; ++o) {
pan = gain_coefficient * signal->desired_gains[o];
if (pan == 0.0 && signal->gains[output] == 0.0) {
-
+
/* nothing deing delivered to this output */
signal->gains[output] = 0.0;
-
+
} else if (fabs (pan - signal->gains[output]) > 0.00001) {
-
- /* signal to this output but the gain coefficient has changed, so
+
+ /* signal to this output but the gain coefficient has changed, so
interpolate between them.
*/
signal->gains[output] = pan;
} else {
-
+
/* signal to this output, same gain as before so just copy with gain
*/
-
+
mix_buffers_with_gain (obufs.get_audio (output).data(),src,nframes,pan);
signal->gains[output] = pan;
}
*/
}
-void
+void
VBAPanner::distribute_one_automated (AudioBuffer& /*src*/, BufferSet& /*obufs*/,
- framepos_t /*start*/, framepos_t /*end*/,
+ framepos_t /*start*/, framepos_t /*end*/,
pframes_t /*nframes*/, pan_t** /*buffers*/, uint32_t /*which*/)
{
/* XXX to be implemented */
XMLNode&
VBAPanner::get_state ()
{
- XMLNode& node (Panner::get_state());
+ XMLNode& node (Panner::get_state());
+ node.add_property (X_("uri"), _descriptor.panner_uri);
+ /* this is needed to allow new sessions to load with old Ardour: */
node.add_property (X_("type"), _descriptor.name);
return node;
}
return ChanCount (DataType::AUDIO, _speakers->n_speakers());
}
-std::set<Evoral::Parameter>
+std::set<Evoral::Parameter>
VBAPanner::what_can_be_automated() const
{
set<Evoral::Parameter> s;
if (_signals.size() > 1) {
s.insert (Evoral::Parameter (PanWidthAutomation));
}
+ if (_speakers->dimension() == 3) {
+ s.insert (Evoral::Parameter (PanElevationAutomation));
+ }
return s;
}
-
+
string
VBAPanner::describe_parameter (Evoral::Parameter p)
{
switch (p.type()) {
case PanAzimuthAutomation:
- return _("Direction");
+ return _("Azimuth");
case PanWidthAutomation:
- return _("Diffusion");
+ return _("Width");
+ case PanElevationAutomation:
+ return _("Elevation");
default:
return _pannable->describe_parameter (p);
}
}
-string
-VBAPanner::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+string
+VBAPanner::value_as_string (boost::shared_ptr<const AutomationControl> ac) const
{
/* DO NOT USE LocaleGuard HERE */
double val = ac->get_value();
switch (ac->parameter().type()) {
case PanAzimuthAutomation: /* direction */
- return string_compose (_("%1"), int (rint (val * 360.0)));
-
+ return string_compose (_("%1\u00B0"), (int (rint (val * 360.0))+180)%360);
+
case PanWidthAutomation: /* diffusion */
return string_compose (_("%1%%"), (int) floor (100.0 * fabs(val)));
-
+
+ case PanElevationAutomation: /* elevation */
+ return string_compose (_("%1\u00B0"), (int) floor (90.0 * fabs(val)));
+
default:
- return _pannable->value_as_string (ac);
+ return _("unused");
}
}
}
boost::shared_ptr<Speakers>
-VBAPanner::get_speakers () const
+VBAPanner::get_speakers () const
{
return _speakers->parent();
}
void
VBAPanner::set_position (double p)
{
- if (p < 0.0) {
- p = 1.0 + p;
- }
-
- if (p > 1.0) {
- p = fmod (p, 1.0);
- }
-
- _pannable->pan_azimuth_control->set_value (p);
+ /* map into 0..1 range */
+ int over = p;
+ over -= (p >= 0) ? 0 : 1;
+ p -= (double)over;
+ _pannable->pan_azimuth_control->set_value (p, Controllable::NoGroup);
}
void
VBAPanner::set_width (double w)
{
- _pannable->pan_width_control->set_value (min (1.0, max (-1.0, w)));
+ _pannable->pan_width_control->set_value (min (1.0, max (-1.0, w)), Controllable::NoGroup);
+}
+
+void
+VBAPanner::set_elevation (double e)
+{
+ _pannable->pan_elevation_control->set_value (min (1.0, max (0.0, e)), Controllable::NoGroup);
}
void
VBAPanner::reset ()
{
- set_position (0);
- set_width (1);
+ set_position (.5);
+ if (_signals.size() > 1) {
+ set_width (1.0 - (1.0 / (double)_signals.size()));
+ } else {
+ set_width (1.0);
+ }
+ set_elevation (0);
update ();
}
projects / ardour.git / blobdiff