#include "ardour/vca.h"
#include "ardour/vca_manager.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace std;
GainControl::GainControl (Session& session, const Evoral::Parameter ¶m, boost::shared_ptr<AutomationList> al)
- : AutomationControl (session, param, ParameterDescriptor(param),
- al ? al : boost::shared_ptr<AutomationList> (new AutomationList (param)),
- param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol")) {
+ : SlavableAutomationControl (session, param, ParameterDescriptor(param),
+
al ? al : boost::shared_ptr<AutomationList> (new AutomationList (param)),
+ param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol")) {
alist()->reset_default (1.0);
range_db = accurate_coefficient_to_dB (_desc.upper) - lower_db;
}
-gain_t
-GainControl::get_value_locked () const {
-
- /* read or write masters lock must be held */
-
- if (_masters.empty()) {
- return AutomationControl::get_value();
- }
-
- gain_t g = 1.0;
-
- for (Masters::const_iterator mr = _masters.begin(); mr != _masters.end(); ++mr) {
- /* get current master value, scale by our current ratio with that master */
- g *= mr->second.master()->get_value () * mr->second.ratio();
- }
-
- return min (Config->get_max_gain(), g);
-}
-
-double
-GainControl::get_value () const
-{
- Glib::Threads::RWLock::ReaderLock lm (master_lock);
- return get_value_locked ();
-}
-
-void
-GainControl::set_value (double val, PBD::Controllable::GroupControlDisposition group_override)
-{
- if (writable()) {
- _set_value (val, group_override);
- }
-}
-
-void
-GainControl::set_value_unchecked (double val)
-{
- /* used only automation playback */
- _set_value (val, Controllable::NoGroup);
-}
-
-void
-GainControl::_set_value (double val, Controllable::GroupControlDisposition group_override)
-{
- val = std::max (std::min (val, (double)_desc.upper), (double)_desc.lower);
-
- {
- Glib::Threads::RWLock::WriterLock lm (master_lock);
-
- if (!_masters.empty()) {
- recompute_masters_ratios (val);
- }
- }
-
- AutomationControl::set_value (val, group_override);
-
- _session.set_dirty ();
-}
-
double
GainControl::internal_to_interface (double v) const
{
return std::string(theBuf);
}
-gain_t
-GainControl::get_master_gain () const
-{
- Glib::Threads::RWLock::ReaderLock sm (master_lock, Glib::Threads::TRY_LOCK);
-
- if (sm.locked()) {
- return get_master_gain_locked ();
- }
-
- return 1.0;
-}
-
-gain_t
-GainControl::get_master_gain_locked () const
-{
- /* Master lock MUST be held (read or write lock is acceptable) */
-
- gain_t g = 1.0;
-
- for (Masters::const_iterator mr = _masters.begin(); mr != _masters.end(); ++mr) {
- /* get current master value, scale by our current ratio with that master */
- g *= mr->second.master()->get_value () * mr->second.ratio();
- }
-
- return g;
-}
-
void
-GainControl::add_master (boost::shared_ptr<VCA> vca)
+GainControl::inc_gain (gain_t factor)
{
- gain_t current_value;
- std::pair<Masters::iterator,bool> res;
-
- {
- Glib::Threads::RWLock::WriterLock lm (master_lock);
- current_value = get_value_locked ();
-
- /* ratio will be recomputed below */
-
- res = _masters.insert (make_pair<uint32_t,MasterRecord> (vca->number(), MasterRecord (vca->gain_control(), 0.0)));
-
- if (res.second) {
-
- recompute_masters_ratios (current_value);
-
- /* note that we bind @param m as a weak_ptr<GainControl>, thus
- avoiding holding a reference to the control in the binding
- itself.
- */
-
- vca->DropReferences.connect_same_thread (masters_connections, boost::bind (&GainControl::master_going_away, this, vca));
-
- /* Store the connection inside the MasterRecord, so that when we destroy it, the connection is destroyed
- and we no longer hear about changes to the VCA.
- */
-
- vca->gain_control()->Changed.connect_same_thread (res.first->second.connection, boost::bind (&PBD::Signal0<void>::operator(), &Changed));
- }
- }
-
- if (res.second) {
- VCAStatusChange (); /* EMIT SIGNAL */
- }
-}
-
-void
-GainControl::master_going_away (boost::weak_ptr<VCA> wv)
-{
- boost::shared_ptr<VCA> v = wv.lock();
- if (v) {
- remove_master (v);
- }
-}
-
-void
-GainControl::remove_master (boost::shared_ptr<VCA> vca)
-{
- gain_t current_value;
- Masters::size_type erased = 0;
-
- {
- Glib::Threads::RWLock::WriterLock lm (master_lock);
- current_value = get_value_locked ();
- erased = _masters.erase (vca->number());
- if (erased) {
- recompute_masters_ratios (current_value);
- }
- }
-
- if (erased) {
- VCAStatusChange (); /* EMIT SIGNAL */
- }
-}
+ /* To be used ONLY when doing group-relative gain adjustment, from
+ * ControlGroup::set_group_values().
+ */
-void
-GainControl::clear_masters ()
-{
- bool had_masters = false;
+ const float desired_gain = user_double();
- {
- Glib::Threads::RWLock::WriterLock lm (master_lock);
- if (!_masters.empty()) {
- had_masters = true;
- }
- _masters.clear ();
- }
-
- if (had_masters) {
- VCAStatusChange (); /* EMIT SIGNAL */
+ if (fabsf (desired_gain) < GAIN_COEFF_SMALL) {
+ // really?! what's the idea here?
+ actually_set_value (0.000001f + (0.000001f * factor), Controllable::ForGroup);
+ } else {
+ actually_set_value (desired_gain + (desired_gain * factor), Controllable::ForGroup);
}
}
}
}
-bool
-GainControl::slaved_to (boost::shared_ptr<VCA> vca) const
-{
- Glib::Threads::RWLock::ReaderLock lm (master_lock);
- return _masters.find (vca->number()) != _masters.end();
-}
-
-bool
-GainControl::slaved () const
-{
- Glib::Threads::RWLock::ReaderLock lm (master_lock);
- return !_masters.empty();
-}
-
XMLNode&
GainControl::get_state ()
{
XMLNode& node (AutomationControl::get_state());
+#if 0
/* store VCA master IDs */
string str;
if (!str.empty()) {
node.add_property (X_("masters"), str);
}
+#endif
return node;
}
int
GainControl::set_state (XMLNode const& node, int version)
{
- AutomationControl::set_state (node, version);
-
- XMLProperty const* prop = node.property (X_("masters"));
-
- /* Problem here if we allow VCA's to be slaved to other VCA's .. we
- * have to load all VCAs first, then set up slave/master relationships
- * once we have them all.
- */
-
- if (prop) {
- masters_string = prop->value ();
-
- if (_session.vca_manager().vcas_loaded()) {
- vcas_loaded ();
- } else {
- _session.vca_manager().VCAsLoaded.connect_same_thread (vca_loaded_connection, boost::bind (&GainControl::vcas_loaded, this));
- }
- }
-
- return 0;
+ return AutomationControl::set_state (node, version);
}
-void
-GainControl::vcas_loaded ()
-{
- if (masters_string.empty()) {
- return;
- }
-
- vector<string> masters;
- split (masters_string, masters, ',');
-
- for (vector<string>::const_iterator m = masters.begin(); m != masters.end(); ++m) {
- boost::shared_ptr<VCA> vca = _session.vca_manager().vca_by_number (PBD::atoi (*m));
- if (vca) {
- add_master (vca);
- }
- }
-
- vca_loaded_connection.disconnect ();
- masters_string.clear ();
-}
projects / ardour.git / blobdiff