X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Famp.cc;h=40a1de2047ef7eaa345ec6e7feaad27478c6f058;hb=8d0ba5254751b88ac560a7ae3b2e7e736ac2dfcf;hp=28edaf43a0d8eb35ff15507e9ed6734d0447d1a0;hpb=d13fdaa9d19e0db68ddcc792c3c3bb8ff661a72e;p=ardour.git diff --git a/libs/ardour/amp.cc b/libs/ardour/amp.cc index 28edaf43a0..40a1de2047 100644 --- a/libs/ardour/amp.cc +++ b/libs/ardour/amp.cc @@ -1,16 +1,16 @@ /* - Copyright (C) 2006 Paul Davis - + Copyright (C) 2006 Paul Davis + This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. - + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - + You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. @@ -28,25 +28,31 @@ #include "ardour/buffer_set.h" #include "ardour/configuration.h" #include "ardour/io.h" -#include "ardour/mute_master.h" +#include "ardour/midi_buffer.h" #include "ardour/session.h" #include "i18n.h" using namespace ARDOUR; +using namespace PBD; -Amp::Amp(Session& s, boost::shared_ptr mm) +Amp::Amp (Session& s) : Processor(s, "Amp") , _apply_gain(true) , _apply_gain_automation(false) , _current_gain(1.0) - , _mute_master (mm) { boost::shared_ptr gl(new AutomationList(Evoral::Parameter(GainAutomation))); _gain_control = boost::shared_ptr( new GainControl(X_("gaincontrol"), s, this, Evoral::Parameter(GainAutomation), gl )); add_control(_gain_control); } +std::string +Amp::display_name() const +{ + return _("Fader"); +} + bool Amp::can_support_io_configuration (const ChanCount& in, ChanCount& out) const { @@ -60,104 +66,75 @@ Amp::configure_io (ChanCount in, ChanCount out) if (out != in) { // always 1:1 return false; } - + return Processor::configure_io (in, out); } void -Amp::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes) +Amp::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool) { - gain_t mute_gain; - - if (_mute_master) { - mute_gain = _mute_master->mute_gain_at (MuteMaster::PreFader); - } else { - mute_gain = 1.0; + if (!_active && !_pending_active) { + return; } if (_apply_gain) { - - if (_apply_gain_automation) { - - gain_t* gab = _session.gain_automation_buffer (); - - if (mute_gain == 0.0) { - - /* absolute mute */ - - if (_current_gain == 0.0) { - - /* already silent */ - - for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { - i->clear (); - } - } else { - - /* cut to silence */ - - Amp::apply_gain (bufs, nframes, _current_gain, 0.0); - _current_gain = 0.0; - } - - } else if (mute_gain != 1.0) { + if (_apply_gain_automation) { - /* mute dimming */ + gain_t* gab = _session.gain_automation_buffer (); - for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { - Sample* const sp = i->data(); - for (nframes_t nx = 0; nx < nframes; ++nx) { - sp[nx] *= gab[nx] * mute_gain; - } + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { + Sample* const sp = i->data(); + for (pframes_t nx = 0; nx < nframes; ++nx) { + sp[nx] *= gab[nx]; } - - _current_gain = gab[nframes-1] * mute_gain; - - } else { - - /* no mute */ - - for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { - Sample* const sp = i->data(); - for (nframes_t nx = 0; nx < nframes; ++nx) { - sp[nx] *= gab[nx]; - } - } - - _current_gain = gab[nframes-1]; } - + _current_gain = gab[nframes-1]; + } else { /* manual (scalar) gain */ - gain_t dg = _gain_control->user_float() * mute_gain; - + gain_t const dg = _gain_control->user_double(); + if (_current_gain != dg) { - + Amp::apply_gain (bufs, nframes, _current_gain, dg); _current_gain = dg; - + } else if (_current_gain != 1.0f) { - + /* gain has not changed, but its non-unity */ + for (BufferSet::midi_iterator i = bufs.midi_begin(); i != bufs.midi_end(); ++i) { + + MidiBuffer& mb (*i); + + for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) { + Evoral::MIDIEvent ev = *m; + if (ev.is_note_on()) { + ev.scale_velocity (_current_gain); + } + } + } + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { apply_gain_to_buffer (i->data(), nframes, _current_gain); } - } + } } } + + _active = _pending_active; } void -Amp::apply_gain (BufferSet& bufs, nframes_t nframes, gain_t initial, gain_t target) +Amp::apply_gain (BufferSet& bufs, framecnt_t nframes, gain_t initial, gain_t target) { - /** Apply a (potentially) declicked gain to the audio buffers of @a bufs + /** Apply a (potentially) declicked gain to the buffers of @a bufs */ - - if (nframes == 0 || bufs.count().n_audio() == 0) { + + if (nframes == 0 || bufs.count().n_total() == 0) { return; } @@ -167,11 +144,10 @@ Amp::apply_gain (BufferSet& bufs, nframes_t nframes, gain_t initial, gain_t targ return; } - const nframes_t declick = std::min ((nframes_t)128, nframes); + const framecnt_t declick = std::min ((framecnt_t) 128, nframes); gain_t delta; double fractional_shift = -1.0/declick; double fractional_pos; - gain_t polscale = 1.0f; if (target < initial) { /* fade out: remove more and more of delta from initial */ @@ -181,18 +157,36 @@ Amp::apply_gain (BufferSet& bufs, nframes_t nframes, gain_t initial, gain_t targ delta = target - initial; } + /* MIDI Gain */ + + for (BufferSet::midi_iterator i = bufs.midi_begin(); i != bufs.midi_end(); ++i) { + + MidiBuffer& mb (*i); + + for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) { + Evoral::MIDIEvent ev = *m; + + if (ev.is_note_on()) { + gain_t scale = delta * (ev.time()/(double) nframes); + ev.scale_velocity (initial+scale); + } + } + } + + /* Audio Gain */ + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { Sample* const buffer = i->data(); fractional_pos = 1.0; - for (nframes_t nx = 0; nx < declick; ++nx) { - buffer[nx] *= polscale * (initial + (delta * (0.5 + 0.5 * cos (M_PI * fractional_pos)))); + for (pframes_t nx = 0; nx < declick; ++nx) { + buffer[nx] *= (initial + (delta * (0.5 + 0.5 * cos (M_PI * fractional_pos)))); fractional_pos += fractional_shift; } - + /* now ensure the rest of the buffer has the target value applied, if necessary. */ - + if (declick != nframes) { if (target == 0.0) { @@ -205,23 +199,163 @@ Amp::apply_gain (BufferSet& bufs, nframes_t nframes, gain_t initial, gain_t targ } void -Amp::apply_simple_gain (BufferSet& bufs, nframes_t nframes, gain_t target) +Amp::declick (BufferSet& bufs, framecnt_t nframes, int dir) +{ + /* Almost exactly like ::apply_gain() but skips MIDI buffers and has fixed initial+target + values. + */ + + if (nframes == 0 || bufs.count().n_total() == 0) { + return; + } + + const framecnt_t declick = std::min ((framecnt_t) 128, nframes); + gain_t delta, initial, target; + double fractional_shift = -1.0/(declick-1); + double fractional_pos; + + if (dir < 0) { + /* fade out: remove more and more of delta from initial */ + delta = -1.0; + initial = 1.0; + target = 0.0; + } else { + /* fade in: add more and more of delta from initial */ + delta = 1.0; + initial = 0.0; + target = 1.0; + } + + /* Audio Gain */ + + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { + Sample* const buffer = i->data(); + + fractional_pos = 1.0; + + for (pframes_t nx = 0; nx < declick; ++nx) { + buffer[nx] *= (initial + (delta * (0.5 + 0.5 * cos (M_PI * fractional_pos)))); + fractional_pos += fractional_shift; + } + + /* now ensure the rest of the buffer has the target value applied, if necessary. */ + + if (declick != nframes) { + + if (target == 0.0) { + memset (&buffer[declick], 0, sizeof (Sample) * (nframes - declick)); + } else if (target != 1.0) { + apply_gain_to_buffer (&buffer[declick], nframes - declick, target); + } + } + } +} + +void +Amp::apply_gain (AudioBuffer& buf, framecnt_t nframes, gain_t initial, gain_t target) +{ + /** Apply a (potentially) declicked gain to the contents of @a buf + */ + + if (nframes == 0) { + return; + } + + // if we don't need to declick, defer to apply_simple_gain + if (initial == target) { + apply_simple_gain (buf, nframes, target); + return; + } + + const framecnt_t declick = std::min ((framecnt_t) 128, nframes); + gain_t delta; + double fractional_shift = -1.0/declick; + double fractional_pos; + + if (target < initial) { + /* fade out: remove more and more of delta from initial */ + delta = -(initial - target); + } else { + /* fade in: add more and more of delta from initial */ + delta = target - initial; + } + + + Sample* const buffer = buf.data(); + + fractional_pos = 1.0; + + for (pframes_t nx = 0; nx < declick; ++nx) { + buffer[nx] *= (initial + (delta * (0.5 + 0.5 * cos (M_PI * fractional_pos)))); + fractional_pos += fractional_shift; + } + + /* now ensure the rest of the buffer has the target value applied, if necessary. */ + + if (declick != nframes) { + + if (target == 0.0) { + memset (&buffer[declick], 0, sizeof (Sample) * (nframes - declick)); + } else if (target != 1.0) { + apply_gain_to_buffer (&buffer[declick], nframes - declick, target); + } + } +} + +void +Amp::apply_simple_gain (BufferSet& bufs, framecnt_t nframes, gain_t target) { if (target == 0.0) { + + for (BufferSet::midi_iterator i = bufs.midi_begin(); i != bufs.midi_end(); ++i) { + MidiBuffer& mb (*i); + + for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) { + Evoral::MIDIEvent ev = *m; + if (ev.is_note_on()) { + ev.set_velocity (0); + } + } + } + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { memset (i->data(), 0, sizeof (Sample) * nframes); } + } else if (target != 1.0) { + + for (BufferSet::midi_iterator i = bufs.midi_begin(); i != bufs.midi_end(); ++i) { + MidiBuffer& mb (*i); + + for (MidiBuffer::iterator m = mb.begin(); m != mb.end(); ++m) { + Evoral::MIDIEvent ev = *m; + if (ev.is_note_on()) { + ev.scale_velocity (target); + } + } + } + for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) { apply_gain_to_buffer (i->data(), nframes, target); } } } +void +Amp::apply_simple_gain (AudioBuffer& buf, framecnt_t nframes, gain_t target) +{ + if (target == 0.0) { + memset (buf.data(), 0, sizeof (Sample) * nframes); + } else if (target != 1.0) { + apply_gain_to_buffer (buf.data(), nframes, target); + } +} + void Amp::inc_gain (gain_t factor, void *src) { - float desired_gain = _gain_control->user_float(); + float desired_gain = _gain_control->user_double(); + if (desired_gain == 0.0f) { set_gain (0.000001f + (0.000001f * factor), src); } else { @@ -246,7 +380,7 @@ Amp::set_gain (gain_t val, void *src) return; } - _gain_control->set_float(val, false); + _gain_control->set_double(val, false); _session.set_dirty(); } @@ -255,31 +389,48 @@ Amp::state (bool full_state) { XMLNode& node (Processor::state (full_state)); node.add_property("type", "amp"); + node.add_child_nocopy (_gain_control->get_state()); + return node; } +int +Amp::set_state (const XMLNode& node, int version) +{ + XMLNode* gain_node; + + Processor::set_state (node, version); + + if ((gain_node = node.child (Controllable::xml_node_name.c_str())) != 0) { + _gain_control->set_state (*gain_node, version); + } + + return 0; +} + void -Amp::GainControl::set_value (float val) +Amp::GainControl::set_value (double val) { // max gain at about +6dB (10.0 ^ ( 6 dB * 0.05)) - if (val > 1.99526231f) + if (val > 1.99526231f) { val = 1.99526231f; + } _amp->set_gain (val, this); - + AutomationControl::set_value(val); } -float +double Amp::GainControl::get_value (void) const { return AutomationControl::get_value(); } void -Amp::setup_gain_automation (sframes_t start_frame, sframes_t end_frame, nframes_t nframes) +Amp::setup_gain_automation (framepos_t start_frame, framepos_t end_frame, framecnt_t nframes) { - Glib::Mutex::Lock am (data().control_lock(), Glib::TRY_LOCK); + Glib::Mutex::Lock am (control_lock(), Glib::TRY_LOCK); if (am.locked() && _session.transport_rolling() && _gain_control->automation_playback()) { _apply_gain_automation = _gain_control->list()->curve().rt_safe_get_vector ( @@ -288,3 +439,9 @@ Amp::setup_gain_automation (sframes_t start_frame, sframes_t end_frame, nframes_ _apply_gain_automation = false; } } + +bool +Amp::visible() const +{ + return true; +}