/*
- 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.
#include "ardour/buffer_set.h"
#include "ardour/configuration.h"
#include "ardour/io.h"
+#include "ardour/midi_buffer.h"
#include "ardour/mute_master.h"
#include "ardour/session.h"
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, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes, bool)
{
gain_t mute_gain;
- if (!_active) {
+ if (!_active && !_pending_active) {
return;
}
if (_mute_master) {
- mute_gain = _mute_master->mute_gain_at (MuteMaster::PreFader);
+ mute_gain = _mute_master->mute_gain_at (MuteMaster::PreFader);
} else {
mute_gain = 1.0;
}
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) {
_current_gain = gab[nframes-1];
}
-
-
+
+
} else { /* manual (scalar) gain */
gain_t dg = _gain_control->user_float() * mute_gain;
-
+
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<MidiBuffer::TimeType> 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)
{
- /** 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;
}
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 */
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<MidiBuffer::TimeType> ev = *m;
+
+ if (ev.is_note_on()) {
+ gain_t scale = delta * (ev.time()/nframes);
+ std::cerr << "scale by " << scale << " for " << ev.time() << " of " << nframes << std::endl;
+ ev.scale_velocity (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))));
+ 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) {
}
}
+void
+Amp::apply_gain (AudioBuffer& buf, nframes_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 nframes_t declick = std::min ((nframes_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 (nframes_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, nframes_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<MidiBuffer::TimeType> 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<MidiBuffer::TimeType> 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, nframes_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();
-
+
if (desired_gain == 0.0f) {
set_gain (0.000001f + (0.000001f * factor), src);
} else {
}
int
-Amp::set_state (const XMLNode& node)
+Amp::set_state (const XMLNode& node, int version)
{
const XMLProperty* prop;
- Processor::set_state (node);
+ Processor::set_state (node, version);
prop = node.property ("gain");
if (prop) {
val = 1.99526231f;
_amp->set_gain (val, this);
-
+
AutomationControl::set_value(val);
}
void
Amp::setup_gain_automation (sframes_t start_frame, sframes_t end_frame, nframes_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 (
_apply_gain_automation = false;
}
}
+
+bool
+Amp::visible() const
+{
+ return true;
+}
projects / ardour.git / blobdiff