diff options
Diffstat (limited to 'libs/ardour/vbap.cc')
| -rw-r--r-- | libs/ardour/vbap.cc | 193 |
1 files changed, 97 insertions, 96 deletions
diff --git a/libs/ardour/vbap.cc b/libs/ardour/vbap.cc index 7c2b845139..75c18cb7de 100644 --- a/libs/ardour/vbap.cc +++ b/libs/ardour/vbap.cc @@ -1,3 +1,4 @@ + /* This software is being provided to you, the licensee, by Ville Pulkki, under the following license. By obtaining, using and/or copying this @@ -54,9 +55,9 @@ using namespace std; 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 (false) + , _speakers (VBAPSpeakers::instance (s)) { } @@ -67,76 +68,76 @@ VBAPanner::~VBAPanner () void VBAPanner::mark_dirty () { - _dirty = true; + _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; - 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; + gains[0] /= power; + gains[1] /= power; + gains[2] /= power; - _dirty = false; + _dirty = false; } void @@ -148,62 +149,62 @@ VBAPanner::do_distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coe 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; + nframes_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 @@ -215,20 +216,20 @@ VBAPanner::do_distribute_automated (AudioBuffer& src, BufferSet& obufs, 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 = new XMLNode (X_("VBAPanner")); + return *node; } int VBAPanner::set_state (const XMLNode& node, int /*version*/) { - return 0; + return 0; } StreamPanner* |