StreamPanner::StreamPanner (Panner& p, Evoral::Parameter param)
: parent (p)
- , _control (new PanControllable (parent.session(), _("direction"), *this, param))
+ , _control (new PanControllable (parent.session(), _("direction"), this, param))
{
assert (param.type() != NullAutomation);
}
}
+double
+StreamPanner::PanControllable::lower () const
+{
+ switch (parameter().id()) {
+ case 200: /* width */
+ return -1.0;
+ default:
+ return 0.0;
+ }
+}
+
void
StreamPanner::PanControllable::set_value (double val)
{
+ Panner& p (streampanner->get_parent());
switch (parameter().id()) {
case 100:
/* position */
- AutomationControl::set_value(val);
- streampanner.get_parent().set_stereo_position (val);
+ val = max (min (val, 1.0), 0.0);
+ if (p.set_stereo_pan (val, p.width_control()->get_value())) {
+ AutomationControl::set_value(val);
+ }
break;
+
case 200:
/* width */
- AutomationControl::set_value(val);
- streampanner.get_parent().set_stereo_width (val);
+ val = max (min (val, 1.0), -1.0);
+ if (p.set_stereo_pan (p.direction_control()->get_value(), val)) {
+ AutomationControl::set_value(val);
+ }
break;
+
default:
- streampanner.set_position (AngularVector (direct_control_to_stereo_pan (val), 0.0));
+ streampanner->set_position (AngularVector (direct_control_to_stereo_pan (val), 0.0));
AutomationControl::set_value(val);
break;
}
}
void
-StreamPanner::distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
+StreamPanner::distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes)
{
if (_mono) {
/* we're in mono mode, so just pan the input to all outputs equally */
void
StreamPanner::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)
{
if (_mono) {
/* we're in mono mode, so just pan the input to all outputs equally */
_control->list()->clear ();
while (in.getline (line, sizeof (line), '\n')) {
- nframes_t when;
+ framepos_t when;
double value;
++linecnt;
break;
}
- if (sscanf (line, "%" PRIu32 " %lf", &when, &value) != 2) {
+ if (sscanf (line, "%" PRIu64 " %lf", &when, &value) != 2) {
warning << string_compose(_("badly formatted pan automation event record at line %1 of %2 (ignored) [%3]"), linecnt, path, line) << endmsg;
continue;
}
}
void
-BaseStereoPanner::do_distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
+BaseStereoPanner::do_distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes)
{
assert(obufs.count().n_audio() == 2);
/* we've moving the pan by an appreciable amount, so we must
interpolate over 64 frames or nframes, whichever is smaller */
- nframes_t const limit = min ((nframes_t)64, nframes);
- nframes_t n;
+ pframes_t const limit = min ((pframes_t) 64, nframes);
+ pframes_t n;
delta = -(delta / (float) (limit));
/* we're moving the pan by an appreciable amount, so we must
interpolate over 64 frames or nframes, whichever is smaller */
- nframes_t const limit = min ((nframes_t)64, nframes);
- nframes_t n;
+ pframes_t const limit = min ((pframes_t) 64, nframes);
+ pframes_t n;
delta = -(delta / (float) (limit));
void
EqualPowerStereoPanner::do_distribute_automated (AudioBuffer& srcbuf, BufferSet& obufs,
- nframes_t start, nframes_t end, nframes_t nframes,
+ framepos_t start, framepos_t end, pframes_t nframes,
pan_t** buffers)
{
assert (obufs.count().n_audio() == 2);
const float pan_law_attenuation = -3.0f;
const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
- for (nframes_t n = 0; n < nframes; ++n) {
+ for (pframes_t n = 0; n < nframes; ++n) {
float const panR = buffers[0][n];
float const panL = 1 - panR;
dst = obufs.get_audio(0).data();
pbuf = buffers[0];
- for (nframes_t n = 0; n < nframes; ++n) {
+ for (pframes_t n = 0; n < nframes; ++n) {
dst[n] += src[n] * pbuf[n];
}
dst = obufs.get_audio(1).data();
pbuf = buffers[1];
- for (nframes_t n = 0; n < nframes; ++n) {
+ for (pframes_t n = 0; n < nframes; ++n) {
dst[n] += src[n] * pbuf[n];
}
}
void
-Panner::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, nframes_t nframes, gain_t gain_coeff)
+Panner::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, pframes_t nframes, gain_t gain_coeff)
{
if (outbufs.count().n_audio() == 0) {
// Don't want to lose audio...
}
void
-Panner::run (BufferSet& inbufs, BufferSet& outbufs, framepos_t start_frame, framepos_t end_frame, nframes_t nframes)
+Panner::run (BufferSet& inbufs, BufferSet& outbufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
{
if (outbufs.count().n_audio() == 0) {
// Failing to deliver audio we were asked to deliver is a bug
Panner::set_stereo_width (double val)
{
boost::shared_ptr<AutomationControl> dc = direction_control();
-
- if (!dc) {
- return;
+ if (dc) {
+ dc->set_value (val);
}
-
- double d = dc->get_value ();
- set_stereo_position (d);
}
void
Panner::set_stereo_position (double val)
{
- /* val is the range 0..1 */
-
- AngularVector p (BaseStereoPanner::lr_fract_to_azimuth (val), 0.0);
boost::shared_ptr<AutomationControl> wc = width_control();
-
- if (!wc) {
- return;
+ if (wc) {
+ wc->set_value (val);
}
+}
- double spread = width_control()->get_value () * 180.0;
- double l_pos = p.azi + (spread/2.0); /* more left is "increasing degrees" */
- double r_pos = p.azi - (spread/2.0); /* more right is "decreasing degrees" */
+bool
+Panner::set_stereo_pan (double direction_as_lr_fract, double width)
+{
+ AngularVector p (BaseStereoPanner::lr_fract_to_azimuth (direction_as_lr_fract), 0.0);
+ /* width parameter ranges from -1..+1 with 0.0 at center. we want 0..+1 plus knowing
+ whether its "reversed" (i.e. left signal pans right and right signal pans left).
+ full width = 180 degrees
+ */
+ double spread = 2.0 * fabs(width/2.0) * 180.0;
+ double l_pos = p.azi + (spread/2.0); /* more left is "increasing degrees" */
+ double r_pos = p.azi - (spread/2.0); /* more right is "decreasing degrees" */
+ bool move_left = true;
+ bool move_right = true;
+ int l_index = 0;
+ int r_index = 1;
- if (l_pos > 180.0 || r_pos < 0.0) {
- /* already full panned, can't move any more */
- return;
+ assert (_streampanners.size() > 1);
+
+ if (width < 0.0) {
+ swap (l_index, r_index);
}
- assert (_streampanners.size() > 1);
+ l_pos = max (min (l_pos, 180.0), 0.0);
+ r_pos = max (min (r_pos, 180.0), 0.0);
+
+ /* if the new left position is less than or equal to 180 (hard left) and the left panner
+ is already there, we're not moving the left signal.
+ */
+
+ if (l_pos >= 180.0 &&_streampanners[l_index]->get_position().azi == 180.0) {
+ move_left = false;
+ }
- cerr << "pos = " << BaseStereoPanner::lr_fract_to_azimuth (val) << " spread = " << width_control()->get_value() << " left = " << l_pos << " right = " << r_pos << endl;
+ /* if the new right position is less than or equal to zero (hard right) and the right panner
+ is already there, we're not moving the right signal.
+ */
+
+ if (r_pos <= 0.0 && _streampanners[r_index]->get_position().azi == 0.0) {
+ move_right = false;
+ }
- _streampanners[0]->set_position (AngularVector (l_pos, 0.0));
- _streampanners[1]->set_position (AngularVector (r_pos, 0.0));
+ if (move_left && move_right) {
+ _streampanners[l_index]->set_position (AngularVector (l_pos, 0.0));
+ _streampanners[r_index]->set_position (AngularVector (r_pos, 0.0));
+ }
+
+ return move_left && move_right;
}
void
Evoral::Parameter lr_param (PanAutomation, 0, 100);
Evoral::Parameter width_param (PanAutomation, 0, 200);
-
- if (!automation_control (lr_param)) {
- boost::shared_ptr<AutomationControl> c (new StreamPanner::PanControllable (_session, _("lr"), *_streampanners.front(), lr_param));
- c->set_value (0.5);
- add_control (c);
+ boost::shared_ptr<AutomationControl> dc = automation_control (lr_param);
+ boost::shared_ptr<AutomationControl> wc = automation_control (width_param);
+
+ if (dc) {
+ /* reset parent StreamPanner as the current one may have been deleted */
+ boost::shared_ptr<StreamPanner::PanControllable> p = boost::dynamic_pointer_cast<StreamPanner::PanControllable> (dc);
+ assert (p);
+ p->streampanner = _streampanners.front ();
+ } else {
+ dc.reset (new StreamPanner::PanControllable (_session, _("lr"), _streampanners.front(), lr_param));
+ add_control (dc);
}
- if (!automation_control (width_param)) {
- boost::shared_ptr<AutomationControl> c (new StreamPanner::PanControllable (_session, _("width"), *_streampanners.front(), width_param));
- c->set_value (1.0); // full width
- add_control (c);
+ if (wc) {
+ /* reset parent as above */
+ boost::shared_ptr<StreamPanner::PanControllable> p = boost::dynamic_pointer_cast<StreamPanner::PanControllable> (wc);
+ assert (p);
+ p->streampanner = _streampanners.front ();
+ } else {
+ wc.reset (new StreamPanner::PanControllable (_session, _("width"), _streampanners.front(), width_param));
+ add_control (wc);
+ }
+
+ dc->set_value (0.5);
+ wc->set_value (1.0); // full width
+}
+
+string
+Panner::describe_parameter (Evoral::Parameter param)
+{
+ if (param.type() == PanAutomation) {
+ switch (param.id()) {
+ case 100:
+ return "Pan:position";
+ case 200:
+ return "Pan:width";
+ default:
+ if (_streampanners.size() == 2) {
+ switch (param.id()) {
+ case 0:
+ return "Pan L";
+ default:
+ return "Pan R";
+ }
+ } else {
+ stringstream ss;
+ ss << "Pan " << param.id() + 1;
+ return ss.str ();
+ }
+ }
}
+
+ return Automatable::describe_parameter (param);
}
projects / ardour.git / blobdiff