#include "i18n.h"
using namespace ARDOUR;
+using namespace PBD;
Amp::Amp (Session& s)
: Processor(s, "Amp")
, _apply_gain_automation(false)
, _current_gain(1.0)
{
- boost::shared_ptr<AutomationList> gl(new AutomationList(Evoral::Parameter(GainAutomation)));
- _gain_control = boost::shared_ptr<GainControl>( new GainControl(X_("gaincontrol"), s, this, Evoral::Parameter(GainAutomation), gl ));
+ Evoral::Parameter p (GainAutomation);
+ /* gain range of -inf to +6dB, default 0dB */
+ p.set_range (0, 1.99526231f, 1, false);
+ boost::shared_ptr<AutomationList> gl (new AutomationList (p));
+ _gain_control = boost::shared_ptr<GainControl> (new GainControl (X_("gaincontrol"), s, this, p, gl));
add_control(_gain_control);
}
}
void
-Amp::run (BufferSet& bufs, sframes_t /*start_frame*/, sframes_t /*end_frame*/, nframes_t nframes, bool)
+Amp::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
{
if (!_active && !_pending_active) {
return;
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) {
+ for (pframes_t nx = 0; nx < nframes; ++nx) {
sp[nx] *= gab[nx];
}
}
-
+
_current_gain = gab[nframes-1];
} else { /* manual (scalar) gain */
- gain_t const dg = _gain_control->user_float();
+ gain_t const dg = _gain_control->user_double();
if (_current_gain != dg) {
}
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 buffers of @a bufs
*/
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;
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) {
fractional_pos = 1.0;
- for (nframes_t nx = 0; nx < declick; ++nx) {
+ 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;
}
}
void
-Amp::apply_gain (AudioBuffer& buf, nframes_t nframes, gain_t initial, 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
*/
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;
Sample* const buffer = buf.data();
-
+
fractional_pos = 1.0;
-
- for (nframes_t nx = 0; nx < declick; ++nx) {
+
+ 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) {
}
void
-Amp::apply_simple_gain (BufferSet& bufs, nframes_t nframes, gain_t target)
+Amp::apply_simple_gain (BufferSet& bufs, framecnt_t nframes, gain_t target)
{
if (target == 0.0) {
}
void
-Amp::apply_simple_gain (AudioBuffer& buf, nframes_t nframes, gain_t target)
+Amp::apply_simple_gain (AudioBuffer& buf, framecnt_t nframes, gain_t target)
{
if (target == 0.0) {
memset (buf.data(), 0, sizeof (Sample) * nframes);
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);
val = 1.99526231f;
}
- //cerr << "set desired gain to " << val << " when curgain = " << _gain_control->get_value () << endl;
-
if (src != _gain_control.get()) {
_gain_control->set_value (val);
// bit twisty, this will come back and call us again
return;
}
- _gain_control->set_float(val, false);
+ _gain_control->set_double(val, false);
_session.set_dirty();
}
{
XMLNode& node (Processor::state (full_state));
node.add_property("type", "amp");
-
- char buf[32];
- snprintf (buf, sizeof (buf), "%2.12f", _gain_control->get_value());
- node.add_property("gain", buf);
+ node.add_child_nocopy (_gain_control->get_state());
return node;
}
int
Amp::set_state (const XMLNode& node, int version)
{
- const XMLProperty* prop;
+ XMLNode* gain_node;
Processor::set_state (node, version);
- prop = node.property ("gain");
- if (prop) {
- gain_t val;
-
- if (sscanf (prop->value().c_str(), "%f", &val) == 1) {
- _gain_control->set_value (val);
- }
- }
+ 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)
- val = 1.99526231f;
+ if (val > 1.99526231) {
+ val = 1.99526231;
+ }
_amp->set_gain (val, this);
AutomationControl::set_value(val);
}
-float
-Amp::GainControl::get_value (void) const
+double
+Amp::GainControl::internal_to_interface (double v) const
+{
+ return gain_to_slider_position (v);
+}
+
+double
+Amp::GainControl::interface_to_internal (double v) const
+{
+ return slider_position_to_gain (v);
+}
+
+double
+Amp::GainControl::internal_to_user (double v) const
{
- return AutomationControl::get_value();
+ return accurate_coefficient_to_dB (v);
}
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 (control_lock(), Glib::TRY_LOCK);
projects / ardour.git / blobdiff