+
/*
This software is being provided to you, the licensee, by Ville Pulkki,
under the following license. By obtaining, using and/or copying this
string VBAPanner::name = X_("VBAP");
VBAPanner::VBAPanner (Panner& parent, Evoral::Parameter param, Speakers& s)
- : StreamPanner (parent, param)
- , _dirty (false)
- , _speakers (VBAPSpeakers::instance (s))
+ : StreamPanner (parent, param)
+ , _dirty (true)
+ , _speakers (VBAPSpeakers::instance (s))
{
}
{
}
-void
-VBAPanner::mark_dirty ()
-{
- _dirty = true;
-}
-
void
VBAPanner::update ()
{
- /* force 2D for now */
- _angles.ele = 0.0;
- _dirty = true;
+ /* force 2D for now */
+ _angles.ele = 0.0;
+ _dirty = true;
- Changed ();
+ Changed ();
}
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];
+ /* 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;
- 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++) {
+ for (i = 0; i < _speakers.n_tuples(); i++) {
- small_g = 10000000.0;
+ small_g = 10000000.0;
- for (j = 0; j < _speakers.dimension(); j++) {
+ for (j = 0; j < _speakers.dimension(); j++) {
- gtmp[j]=0.0;
+ 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 < _speakers.dimension(); k++) {
+ gtmp[j] += cartdir[k] * _speakers.matrix(i)[j*_speakers.dimension()+k];
+ }
- if (gtmp[j] < small_g) {
- small_g = gtmp[j];
- }
- }
+ if (gtmp[j] < small_g) {
+ small_g = gtmp[j];
+ }
+ }
- if (small_g > big_sm_g) {
+ if (small_g > big_sm_g) {
- big_sm_g = 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);
+ 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;
- }
- }
- }
+ 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]);
+ power = sqrt (gains[0]*gains[0] + gains[1]*gains[1] + gains[2]*gains[2]);
- gains[0] /= power;
- gains[1] /= power;
- gains[2] /= power;
+ if (power > 0) {
+ gains[0] /= power;
+ gains[1] /= power;
+ gains[2] /= power;
+ }
- _dirty = false;
+ _dirty = false;
}
void
-VBAPanner::do_distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coefficient, nframes_t nframes)
+VBAPanner::do_distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coefficient, pframes_t nframes)
{
if (_muted) {
return;
Sample* const src = srcbuf.data();
Sample* dst;
- pan_t pan;
- uint32_t n_audio = obufs.count().n_audio();
- bool was_dirty;
-
- if ((was_dirty = _dirty)) {
- compute_gains (desired_gains, desired_outputs, _angles.azi, _angles.ele);
- cerr << " @ " << _angles.azi << " /= " << _angles.ele
- << " Outputs: "
- << desired_outputs[0] + 1 << ' '
- << desired_outputs[1] + 1 << ' '
- << " Gains "
- << desired_gains[0] << ' '
- << desired_gains[1] << ' '
- << endl;
- }
-
- bool todo[n_audio];
+ pan_t pan;
+ uint32_t n_audio = obufs.count().n_audio();
+ bool was_dirty;
+
+ if ((was_dirty = _dirty)) {
+ compute_gains (desired_gains, desired_outputs, _angles.azi, _angles.ele);
+ cerr << " @ " << _angles.azi << " /= " << _angles.ele
+ << " Outputs: "
+ << desired_outputs[0] + 1 << ' '
+ << desired_outputs[1] + 1 << ' '
+ << " Gains "
+ << desired_gains[0] << ' '
+ << desired_gains[1] << ' '
+ << endl;
+ }
+
+ bool todo[n_audio];
- for (uint32_t o = 0; o < n_audio; ++o) {
- todo[o] = true;
- }
+ 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.
- */
+ /* 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 (desired_outputs[o] != -1) {
+ for (int o = 0; o < 3; ++o) {
+ if (desired_outputs[o] != -1) {
- nframes_t n = 0;
+ pframes_t n = 0;
- /* XXX TODO: interpolate across changes in gain and/or outputs
- */
+ /* XXX TODO: interpolate across changes in gain and/or outputs
+ */
- dst = obufs.get_audio(desired_outputs[o]).data();
+ dst = obufs.get_audio(desired_outputs[o]).data();
- pan = gain_coefficient * desired_gains[o];
- mix_buffers_with_gain (dst+n,src+n,nframes-n,pan);
+ pan = gain_coefficient * desired_gains[o];
+ mix_buffers_with_gain (dst+n,src+n,nframes-n,pan);
- todo[o] = false;
- }
- }
+ 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);
- }
- }
+ 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);
+ }
+ }
- if (was_dirty) {
- memcpy (gains, desired_gains, sizeof (gains));
- memcpy (outputs, desired_outputs, sizeof (outputs));
- }
+ if (was_dirty) {
+ memcpy (gains, desired_gains, sizeof (gains));
+ memcpy (outputs, desired_outputs, sizeof (outputs));
+ }
}
void
VBAPanner::do_distribute_automated (AudioBuffer& src, BufferSet& obufs,
- nframes_t start, nframes_t end, nframes_t nframes, pan_t** buffers)
+ framepos_t start, framepos_t end, pframes_t nframes, pan_t** buffers)
{
}
XMLNode&
VBAPanner::get_state ()
{
- return state (true);
+ return state (true);
}
XMLNode&
VBAPanner::state (bool full_state)
{
- XMLNode* node = new XMLNode (X_("VBAPanner"));
- return *node;
+ XMLNode& node (StreamPanner::get_state());
+ node.add_property (X_("type"), VBAPanner::name);
+ return node;
}
int
VBAPanner::set_state (const XMLNode& node, int /*version*/)
{
- return 0;
+ return 0;
}
StreamPanner*
projects / ardour.git / blobdiff