git-svn-id: svn://localhost/ardour2/branches/3.0@8521 d708f5d6-7413-0410-9779-e7cbd77b26cf
307 lines
8.1 KiB
C++
307 lines
8.1 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/vbap.h"
|
|
#include "ardour/vbap_speakers.h"
|
|
#include "ardour/audio_buffer.h"
|
|
#include "ardour/buffer_set.h"
|
|
#include "ardour/pan_controllable.h"
|
|
|
|
using namespace PBD;
|
|
using namespace ARDOUR;
|
|
using namespace std;
|
|
|
|
static PanPluginDescriptor _descriptor = {
|
|
"VBAP 2D panner",
|
|
1, -1, 2, -1,
|
|
VBAPanner::factory
|
|
};
|
|
|
|
extern "C" { PanPluginDescriptor* panner_descriptor () { return &_descriptor; } }
|
|
|
|
VBAPanner::Signal::Signal (Session& session, VBAPanner& p, uint32_t n)
|
|
: azimuth_control (new PanControllable (session, string_compose (_("azimuth %1"), n+1), &p, Evoral::Parameter (PanAzimuthAutomation, 0, n)))
|
|
, elevation_control (new PanControllable (session, string_compose (_("elevation %1"), n+1), &p, Evoral::Parameter (PanElevationAutomation, 0, 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, Speakers& s)
|
|
: Panner (p)
|
|
, _dirty (true)
|
|
, _speakers (VBAPSpeakers::instance (s))
|
|
{
|
|
}
|
|
|
|
VBAPanner::~VBAPanner ()
|
|
{
|
|
for (vector<Signal*>::iterator i = _signals.begin(); i != _signals.end(); ++i) {
|
|
delete *i;
|
|
}
|
|
}
|
|
|
|
void
|
|
VBAPanner::configure_io (const ChanCount& in, const ChanCount& /* ignored - we use Speakers */)
|
|
{
|
|
uint32_t n = in.n_audio();
|
|
|
|
/* 2d panning: spread signals equally around a circle */
|
|
|
|
double degree_step = 360.0 / _speakers.n_speakers();
|
|
double deg;
|
|
|
|
/* even number of signals? make sure the top two are either side of "top".
|
|
otherwise, just start at the "top" (90.0 degrees) and rotate around
|
|
*/
|
|
|
|
if (n % 2) {
|
|
deg = 90.0 - degree_step;
|
|
} else {
|
|
deg = 90.0;
|
|
}
|
|
|
|
_signals.clear ();
|
|
|
|
for (uint32_t i = 0; i < n; ++i) {
|
|
_signals.push_back (new Signal (_pannable->session(), *this, i));
|
|
_signals[i]->direction = AngularVector (deg, 0.0);
|
|
deg += degree_step;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
_dirty = false;
|
|
}
|
|
|
|
void
|
|
VBAPanner::do_distribute (BufferSet& inbufs, BufferSet& obufs, gain_t gain_coefficient, pframes_t nframes)
|
|
{
|
|
bool was_dirty = _dirty;
|
|
uint32_t n;
|
|
vector<Signal*>::iterator s;
|
|
|
|
assert (inbufs.count().n_audio() == _signals.size());
|
|
|
|
/* XXX need to handle mono case */
|
|
|
|
for (s = _signals.begin(), n = 0; s != _signals.end(); ++s, ++n) {
|
|
|
|
Signal* signal (*s);
|
|
|
|
if (was_dirty) {
|
|
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;
|
|
}
|
|
|
|
do_distribute_one (inbufs.get_audio (n), obufs, gain_coefficient, nframes, n);
|
|
|
|
if (was_dirty) {
|
|
memcpy (signal->gains, signal->desired_gains, sizeof (signal->gains));
|
|
memcpy (signal->outputs, signal->desired_outputs, sizeof (signal->outputs));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
VBAPanner::do_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::do_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;
|
|
}
|
|
|
|
boost::shared_ptr<AutomationControl>
|
|
VBAPanner::azimuth_control (uint32_t n)
|
|
{
|
|
if (n >= _signals.size()) {
|
|
return boost::shared_ptr<AutomationControl>();
|
|
}
|
|
return _signals[n]->azimuth_control;
|
|
}
|
|
|
|
boost::shared_ptr<AutomationControl>
|
|
VBAPanner::evelation_control (uint32_t n)
|
|
{
|
|
if (n >= _signals.size()) {
|
|
return boost::shared_ptr<AutomationControl>();
|
|
}
|
|
return _signals[n]->elevation_control;
|
|
}
|
|
|
|
Panner*
|
|
VBAPanner::factory (boost::shared_ptr<Pannable> p, Speakers& s)
|
|
{
|
|
return new VBAPanner (p, s);
|
|
}
|
|
|
|
string
|
|
VBAPanner::describe_parameter (Evoral::Parameter param)
|
|
{
|
|
stringstream ss;
|
|
switch (param.type()) {
|
|
case PanElevationAutomation:
|
|
return string_compose ( _("Pan:elevation %1"), param.id() + 1);
|
|
case PanWidthAutomation:
|
|
return string_compose ( _("Pan:diffusion %1"), param.id() + 1);
|
|
case PanAzimuthAutomation:
|
|
return string_compose ( _("Pan:azimuth %1"), param.id() + 1);
|
|
}
|
|
|
|
return Automatable::describe_parameter (param);
|
|
}
|
|
|
|
ChanCount
|
|
VBAPanner::in() const
|
|
{
|
|
return ChanCount (DataType::AUDIO, _signals.size());
|
|
}
|
|
|
|
ChanCount
|
|
VBAPanner::out() const
|
|
{
|
|
return ChanCount (DataType::AUDIO, _speakers.n_speakers());
|
|
}
|