X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fgain_control.cc;h=1813586e0935a49cf8e2aa177f9311f3a7a853df;hb=e6915e01de2e2167c3384c6c8f2408f763971616;hp=214c2bd3d6c54acfed99c167bd87ba67139ff627;hpb=a879310349502936dc598bda35fa405475674db8;p=ardour.git diff --git a/libs/ardour/gain_control.cc b/libs/ardour/gain_control.cc index 214c2bd3d6..1813586e09 100644 --- a/libs/ardour/gain_control.cc +++ b/libs/ardour/gain_control.cc @@ -16,266 +16,66 @@ 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include + #include "pbd/convert.h" #include "pbd/strsplit.h" +#include "evoral/Curve.hpp" + #include "ardour/dB.h" #include "ardour/gain_control.h" #include "ardour/session.h" #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 al) - : AutomationControl (session, param, ParameterDescriptor(param), - al ? al : boost::shared_ptr (new AutomationList (param)), - param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol")) { - - alist()->reset_default (1.0); - - lower_db = accurate_coefficient_to_dB (_desc.lower); - range_db = accurate_coefficient_to_dB (_desc.upper) - lower_db; -} - -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) + : SlavableAutomationControl (session, param, ParameterDescriptor(param), + al ? al : boost::shared_ptr (new AutomationList (param)), + param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol"), + Controllable::GainLike) { - /* used only automation playback */ - _set_value (val, Controllable::NoGroup); } void -GainControl::_set_value (double val, Controllable::GroupControlDisposition group_override) +GainControl::inc_gain (gain_t factor) { - AutomationControl::set_value (std::max (std::min (val, (double)_desc.upper), (double)_desc.lower), group_override); - _session.set_dirty (); -} + /* To be used ONLY when doing group-relative gain adjustment, from + * ControlGroup::set_group_values(). + */ -double -GainControl::internal_to_interface (double v) const -{ - if (_desc.type == GainAutomation) { - return gain_to_slider_position (v); - } else { - return (accurate_coefficient_to_dB (v) - lower_db) / range_db; - } -} + const float desired_gain = get_value (); -double -GainControl::interface_to_internal (double v) const -{ - if (_desc.type == GainAutomation) { - return slider_position_to_gain (v); + if (fabsf (desired_gain) < GAIN_COEFF_SMALL) { + // really?! what's the idea here? + actually_set_value (0.000001f + (0.000001f * factor), Controllable::ForGroup); } else { - return dB_to_coefficient (lower_db + v * range_db); - } -} - -double -GainControl::internal_to_user (double v) const -{ - return accurate_coefficient_to_dB (v); -} - -double -GainControl::user_to_internal (double u) const -{ - return dB_to_coefficient (u); -} - -std::string -GainControl::get_user_string () const -{ - char theBuf[32]; sprintf( theBuf, _("%3.1f dB"), accurate_coefficient_to_dB (get_value())); - return std::string(theBuf); -} - -gain_t -GainControl::get_master_gain () const -{ - Glib::Threads::Mutex::Lock 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 */ - - gain_t g = 1.0; - - for (Masters::const_iterator m = _masters.begin(); m != _masters.end(); ++m) { - g *= (*m)->get_value (); - } - - return g; -} - -void -GainControl::add_master (boost::shared_ptr vca) -{ - gain_t old_master_val; - gain_t new_master_val; - std::pair >::iterator,bool> res; - - { - Glib::Threads::Mutex::Lock lm (master_lock); - old_master_val = get_master_gain_locked (); - res = _masters.insert (vca->control()); - _masters_numbers.insert (vca->number()); - new_master_val = get_master_gain_locked (); - - /* note that we bind @param m as a weak_ptr, 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)); - - } - - if (old_master_val != new_master_val) { - Changed(); /* EMIT SIGNAL */ - } - - if (res.second) { - VCAStatusChange (); /* EMIT SIGNAL */ - } -} - -void -GainControl::master_going_away (boost::weak_ptr wv) -{ - boost::shared_ptr v = wv.lock(); - if (v) { - remove_master (v); - } -} - -void -GainControl::remove_master (boost::shared_ptr vca) -{ - gain_t old_master_val; - gain_t new_master_val; - set >::size_type erased = 0; - - { - Glib::Threads::Mutex::Lock lm (master_lock); - old_master_val = get_master_gain_locked (); - erased = _masters.erase (vca->control()); - _masters_numbers.erase (vca->number()); - new_master_val = get_master_gain_locked (); - } - - if (old_master_val != new_master_val) { - Changed(); /* EMIT SIGNAL */ - } - - if (erased) { - VCAStatusChange (); /* EMIT SIGNAL */ + actually_set_value (desired_gain + (desired_gain * factor), Controllable::ForGroup); } } void -GainControl::clear_masters () +GainControl::post_add_master (boost::shared_ptr m) { - gain_t old_master_val; - gain_t new_master_val; - bool had_masters = false; - - { - Glib::Threads::Mutex::Lock lm (master_lock); - old_master_val = get_master_gain_locked (); - if (!_masters.empty()) { - had_masters = true; - } - _masters.clear (); - _masters_numbers.clear (); - new_master_val = get_master_gain_locked (); - } - - if (old_master_val != new_master_val) { - Changed(); /* EMIT SIGNAL */ - } - - if (had_masters) { - VCAStatusChange (); /* EMIT SIGNAL */ + if (m->get_value() == 0) { + /* master is at -inf, which forces this ctrl to -inf on assignment */ + Changed (false, Controllable::NoGroup); /* EMIT SIGNAL */ } } bool -GainControl::slaved_to (boost::shared_ptr vca) const -{ - Glib::Threads::Mutex::Lock lm (master_lock); - return find (_masters.begin(), _masters.end(), vca->control()) != _masters.end(); -} - -XMLNode& -GainControl::get_state () +GainControl::get_masters_curve_locked (samplepos_t start, samplepos_t end, float* vec, samplecnt_t veclen) const { - XMLNode& node (AutomationControl::get_state()); - - /* store VCA master IDs */ - - string str; - - { - Glib::Threads::Mutex::Lock lm (master_lock); - for (set::const_iterator m = _masters_numbers.begin(); m != _masters_numbers.end(); ++m) { - if (!str.empty()) { - str += ','; - } - str += PBD::to_string (*m, std::dec); - } + if (_masters.empty()) { + return list()->curve().rt_safe_get_vector (start, end, vec, veclen); } - - if (!str.empty()) { - node.add_property (X_("masters"), str); + for (samplecnt_t i = 0; i < veclen; ++i) { + vec[i] = 1.f; } - - return node; -} - -int -GainControl::set_state (XMLNode const& node, int version) -{ - AutomationControl::set_state (node, version); - - XMLProperty const* prop = node.property (X_("masters")); - - /* XXXProblem here if we allow VCA's to be slaved to other VCA's .. we - * have to load all VCAs first, then call ::set_state() so that - * vca_by_number() will succeed. - */ - - if (prop) { - vector masters; - split (prop->value(), masters, ','); - - for (vector::const_iterator m = masters.begin(); m != masters.end(); ++m) { - boost::shared_ptr vca = _session.vca_manager().vca_by_number (PBD::atoi (*m)); - if (vca) { - add_master (vca); - } - } - } - - return 0; + return SlavableAutomationControl::masters_curve_multiply (start, end, vec, veclen); }