Paul Davis
da144ab5ed
git-svn-id: svn://localhost/ardour2/branches/3.0@8887 d708f5d6-7413-0410-9779-e7cbd77b26cf
334 lines
8.7 KiB
C++
334 lines
8.7 KiB
C++
#include <cmath>
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
|
|
#include "pbd/cartesian.h"
|
|
|
|
#include "ardour/pannable.h"
|
|
#include "ardour/speakers.h"
|
|
#include "ardour/audio_buffer.h"
|
|
#include "ardour/buffer_set.h"
|
|
#include "ardour/pan_controllable.h"
|
|
|
|
#include "vbap.h"
|
|
#include "vbap_speakers.h"
|
|
|
|
using namespace PBD;
|
|
using namespace ARDOUR;
|
|
using namespace std;
|
|
|
|
static PanPluginDescriptor _descriptor = {
|
|
"VBAP 2D panner",
|
|
-1, -1,
|
|
VBAPanner::factory
|
|
};
|
|
|
|
extern "C" { PanPluginDescriptor* panner_descriptor () { return &_descriptor; } }
|
|
|
|
VBAPanner::Signal::Signal (Session& session, VBAPanner& p, uint32_t n)
|
|
{
|
|
gains[0] = gains[1] = gains[2] = 0;
|
|
desired_gains[0] = desired_gains[1] = desired_gains[2] = 0;
|
|
outputs[0] = outputs[1] = outputs[2] = -1;
|
|
desired_outputs[0] = desired_outputs[1] = desired_outputs[2] = -1;
|
|
};
|
|
|
|
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_width_control->Changed.connect_same_thread (*this, boost::bind (&VBAPanner::update, this));
|
|
|
|
update ();
|
|
}
|
|
|
|
VBAPanner::~VBAPanner ()
|
|
{
|
|
clear_signals ();
|
|
}
|
|
|
|
void
|
|
VBAPanner::clear_signals ()
|
|
{
|
|
for (vector<Signal*>::iterator i = _signals.begin(); i != _signals.end(); ++i) {
|
|
delete *i;
|
|
}
|
|
_signals.clear ();
|
|
}
|
|
|
|
void
|
|
VBAPanner::configure_io (ChanCount in, ChanCount /* ignored - we use Speakers */)
|
|
{
|
|
uint32_t n = in.n_audio();
|
|
|
|
clear_signals ();
|
|
|
|
for (uint32_t i = 0; i < n; ++i) {
|
|
_signals.push_back (new Signal (_pannable->session(), *this, i));
|
|
}
|
|
|
|
update ();
|
|
}
|
|
|
|
void
|
|
VBAPanner::update ()
|
|
{
|
|
/* recompute signal directions based on panner azimuth and 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;
|
|
|
|
/* 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)
|
|
*/
|
|
|
|
double w = fabs (_pannable->pan_width_control->get_value()) * 360.0;
|
|
|
|
double min_dir = center - w;
|
|
min_dir = max (min (min_dir, 360.0), 0.0);
|
|
|
|
double max_dir = center + w;
|
|
max_dir = max (min (max_dir, 360.0), 0.0);
|
|
|
|
double degree_step_per_signal = (max_dir - min_dir) / _signals.size();
|
|
double signal_direction = min_dir;
|
|
|
|
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);
|
|
cerr << " @ " << signal->direction.azi << " /= " << signal->direction.ele
|
|
<< " Outputs: "
|
|
<< signal->desired_outputs[0] + 1 << ' '
|
|
<< signal->desired_outputs[1] + 1 << ' '
|
|
<< " Gains "
|
|
<< signal->desired_gains[0] << ' '
|
|
<< signal->desired_gains[1] << ' '
|
|
<< endl;
|
|
|
|
signal_direction += degree_step_per_signal;
|
|
}
|
|
}
|
|
|
|
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];
|
|
double power;
|
|
int i,j,k;
|
|
double small_g;
|
|
double big_sm_g, gtmp[3];
|
|
|
|
azi_ele_to_cart (azi,ele, cartdir[0], cartdir[1], cartdir[2]);
|
|
big_sm_g = -100000.0;
|
|
|
|
gains[0] = gains[1] = gains[2] = 0;
|
|
speaker_ids[0] = speaker_ids[1] = speaker_ids[2] = 0;
|
|
|
|
for (i = 0; i < _speakers->n_tuples(); i++) {
|
|
|
|
small_g = 10000000.0;
|
|
|
|
for (j = 0; j < _speakers->dimension(); j++) {
|
|
|
|
gtmp[j] = 0.0;
|
|
|
|
for (k = 0; k < _speakers->dimension(); k++) {
|
|
gtmp[j] += cartdir[k] * _speakers->matrix(i)[j*_speakers->dimension()+k];
|
|
}
|
|
|
|
if (gtmp[j] < small_g) {
|
|
small_g = gtmp[j];
|
|
}
|
|
}
|
|
|
|
if (small_g > big_sm_g) {
|
|
|
|
big_sm_g = small_g;
|
|
|
|
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);
|
|
|
|
if (_speakers->dimension() == 3) {
|
|
gains[2] = gtmp[2];
|
|
speaker_ids[2] = _speakers->speaker_for_tuple (i, 2);
|
|
} else {
|
|
gains[2] = 0.0;
|
|
speaker_ids[2] = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
power = sqrt (gains[0]*gains[0] + gains[1]*gains[1] + gains[2]*gains[2]);
|
|
|
|
if (power > 0) {
|
|
gains[0] /= power;
|
|
gains[1] /= power;
|
|
gains[2] /= power;
|
|
}
|
|
}
|
|
|
|
void
|
|
VBAPanner::distribute (BufferSet& inbufs, BufferSet& obufs, gain_t gain_coefficient, pframes_t nframes)
|
|
{
|
|
uint32_t n;
|
|
vector<Signal*>::iterator s;
|
|
|
|
assert (inbufs.count().n_audio() == _signals.size());
|
|
|
|
for (s = _signals.begin(), n = 0; s != _signals.end(); ++s, ++n) {
|
|
|
|
Signal* signal (*s);
|
|
|
|
distribute_one (inbufs.get_audio (n), obufs, gain_coefficient, nframes, n);
|
|
|
|
memcpy (signal->gains, signal->desired_gains, sizeof (signal->gains));
|
|
memcpy (signal->outputs, signal->desired_outputs, sizeof (signal->outputs));
|
|
}
|
|
}
|
|
|
|
void
|
|
VBAPanner::distribute_one (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coefficient, pframes_t nframes, uint32_t which)
|
|
{
|
|
Sample* const src = srcbuf.data();
|
|
Sample* dst;
|
|
pan_t pan;
|
|
uint32_t n_audio = obufs.count().n_audio();
|
|
bool todo[n_audio];
|
|
Signal* signal (_signals[which]);
|
|
|
|
for (uint32_t o = 0; o < n_audio; ++o) {
|
|
todo[o] = true;
|
|
}
|
|
|
|
/* VBAP may distribute the signal across up to 3 speakers depending on
|
|
the configuration of the speakers.
|
|
*/
|
|
|
|
for (int o = 0; o < 3; ++o) {
|
|
if (signal->desired_outputs[o] != -1) {
|
|
|
|
pframes_t n = 0;
|
|
|
|
/* XXX TODO: interpolate across changes in gain and/or outputs
|
|
*/
|
|
|
|
dst = obufs.get_audio (signal->desired_outputs[o]).data();
|
|
|
|
pan = gain_coefficient * signal->desired_gains[o];
|
|
mix_buffers_with_gain (dst+n,src+n,nframes-n,pan);
|
|
|
|
todo[o] = false;
|
|
}
|
|
}
|
|
|
|
for (uint32_t o = 0; o < n_audio; ++o) {
|
|
if (todo[o]) {
|
|
/* VBAP decided not to deliver any audio to this output, so we write silence */
|
|
dst = obufs.get_audio(o).data();
|
|
memset (dst, 0, sizeof (Sample) * nframes);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
VBAPanner::distribute_one_automated (AudioBuffer& src, BufferSet& obufs,
|
|
framepos_t start, framepos_t end, pframes_t nframes, pan_t** buffers, uint32_t which)
|
|
{
|
|
}
|
|
|
|
XMLNode&
|
|
VBAPanner::get_state ()
|
|
{
|
|
return state (true);
|
|
}
|
|
|
|
XMLNode&
|
|
VBAPanner::state (bool full_state)
|
|
{
|
|
XMLNode& node (Panner::get_state());
|
|
node.add_property (X_("type"), _descriptor.name);
|
|
return node;
|
|
}
|
|
|
|
int
|
|
VBAPanner::set_state (const XMLNode& node, int /*version*/)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Panner*
|
|
VBAPanner::factory (boost::shared_ptr<Pannable> p, boost::shared_ptr<Speakers> s)
|
|
{
|
|
return new VBAPanner (p, s);
|
|
}
|
|
|
|
ChanCount
|
|
VBAPanner::in() const
|
|
{
|
|
return ChanCount (DataType::AUDIO, _signals.size());
|
|
}
|
|
|
|
ChanCount
|
|
VBAPanner::out() const
|
|
{
|
|
return ChanCount (DataType::AUDIO, _speakers->n_speakers());
|
|
}
|
|
|
|
std::set<Evoral::Parameter>
|
|
VBAPanner::what_can_be_automated() const
|
|
{
|
|
set<Evoral::Parameter> s;
|
|
s.insert (Evoral::Parameter (PanAzimuthAutomation));
|
|
s.insert (Evoral::Parameter (PanWidthAutomation));
|
|
return s;
|
|
}
|
|
|
|
string
|
|
VBAPanner::describe_parameter (Evoral::Parameter p)
|
|
{
|
|
switch (p.type()) {
|
|
case PanAzimuthAutomation:
|
|
return _("Direction");
|
|
case PanWidthAutomation:
|
|
return _("Diffusion");
|
|
default:
|
|
return _pannable->describe_parameter (p);
|
|
}
|
|
}
|
|
|
|
string
|
|
VBAPanner::value_as_string (boost::shared_ptr<AutomationControl> ac) const
|
|
{
|
|
/* DO NOT USE LocaleGuard HERE */
|
|
double val = ac->get_value();
|
|
|
|
switch (ac->parameter().type()) {
|
|
case PanAzimuthAutomation: /* direction */
|
|
return string_compose (_("%1"), val * 360.0);
|
|
|
|
case PanWidthAutomation: /* diffusion */
|
|
return string_compose (_("%1%%"), (int) floor (100.0 * fabs(val)));
|
|
|
|
default:
|
|
return _pannable->value_as_string (ac);
|
|
}
|
|
}
|