#include "ardour/amp.h"
#include "ardour/audio_buffer.h"
#include "ardour/buffer_set.h"
-#include "ardour/configuration.h"
-#include "ardour/io.h"
#include "ardour/midi_buffer.h"
#include "ardour/session.h"
#include "i18n.h"
using namespace ARDOUR;
+using namespace PBD;
+using std::min;
+
+/* gain range of -inf to +6dB, default 0dB */
+const float Amp::max_gain_coefficient = 1.99526231f;
Amp::Amp (Session& s)
: Processor(s, "Amp")
, _apply_gain(true)
, _apply_gain_automation(false)
, _current_gain(1.0)
+ , _gain_automation_buffer(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);
+ p.set_range (0, max_gain_coefficient, 1, false);
+ boost::shared_ptr<AutomationList> gl (new AutomationList (p));
+ _gain_control = boost::shared_ptr<GainControl> (new GainControl (X_("gaincontrol"), s, this, p, gl));
+ _gain_control->set_flags (Controllable::GainLike);
+
add_control(_gain_control);
}
}
bool
-Amp::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
+Amp::can_support_io_configuration (const ChanCount& in, ChanCount& out)
{
out = in;
return true;
}
void
-Amp::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_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;
if (_apply_gain_automation) {
- gain_t* gab = _session.gain_automation_buffer ();
+ gain_t* gab = _gain_automation_buffer;
+ assert (gab);
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 */
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()) {
}
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;
Evoral::MIDIEvent<MidiBuffer::TimeType> ev = *m;
if (ev.is_note_on()) {
- gain_t scale = delta * (ev.time()/(double) nframes);
+ const gain_t scale = delta * (ev.time()/(double) nframes);
ev.scale_velocity (initial+scale);
}
}
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::declick (BufferSet& bufs, nframes_t nframes, int dir)
+Amp::declick (BufferSet& bufs, framecnt_t nframes, int dir)
{
/* Almost exactly like ::apply_gain() but skips MIDI buffers and has fixed initial+target
values.
return;
}
- const nframes_t declick = std::min ((nframes_t)128, nframes);
+ const framecnt_t declick = std::min ((framecnt_t) 128, nframes);
gain_t delta, initial, target;
- double fractional_shift = -1.0/declick;
+ double fractional_shift = -1.0/(declick-1);
double fractional_pos;
if (dir < 0) {
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;
}
if (declick != nframes) {
if (target == 0.0) {
- memset (&buffer[declick], 0, sizeof (Sample) * (nframes - declick));
+ 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, nframes_t nframes, gain_t initial, gain_t target)
+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::set_gain (gain_t val, void *src)
+Amp::set_gain (gain_t val, void *)
{
- // max gain at about +6dB (10.0 ^ ( 6 dB * 0.05))
- if (val > 1.99526231f) {
- 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
- // (this keeps control in sync with reality)
- return;
- }
-
- _gain_control->set_double(val, false);
- _session.set_dirty();
+ _gain_control->set_value (val);
}
XMLNode&
{
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 (double val)
{
- // max gain at about +6dB (10.0 ^ ( 6 dB * 0.05))
- if (val > 1.99526231f)
- val = 1.99526231f;
+ AutomationControl::set_value (min (val, (double) max_gain_coefficient));
+ _amp->session().set_dirty ();
+}
- _amp->set_gain (val, this);
+double
+Amp::GainControl::internal_to_interface (double v) const
+{
+ return gain_to_slider_position (v);
+}
- AutomationControl::set_value(val);
+double
+Amp::GainControl::interface_to_internal (double v) const
+{
+ return slider_position_to_gain (v);
}
double
-Amp::GainControl::get_value (void) const
+Amp::GainControl::internal_to_user (double v) const
{
- return AutomationControl::get_value();
+ return accurate_coefficient_to_dB (v);
}
+/** Write gain automation for this cycle into the buffer previously passed in to
+ * set_gain_automation_buffer (if we are in automation playback mode and the
+ * transport is rolling).
+ */
void
-Amp::setup_gain_automation (framepos_t start_frame, framepos_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);
+ Glib::Threads::Mutex::Lock am (control_lock(), Glib::Threads::TRY_LOCK);
if (am.locked() && _session.transport_rolling() && _gain_control->automation_playback()) {
+ assert (_gain_automation_buffer);
_apply_gain_automation = _gain_control->list()->curve().rt_safe_get_vector (
- start_frame, end_frame, _session.gain_automation_buffer(), nframes);
+ start_frame, end_frame, _gain_automation_buffer, nframes);
} else {
_apply_gain_automation = false;
}
{
return true;
}
+
+std::string
+Amp::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+ if (ac == _gain_control) {
+ char buffer[32];
+ snprintf (buffer, sizeof (buffer), "%.2fdB", ac->internal_to_user (ac->get_value ()));
+ return buffer;
+ }
+
+ return Automatable::value_as_string (ac);
+}
+
+/** Sets up the buffer that setup_gain_automation and ::run will use for
+ * gain automationc curves. Must be called before setup_gain_automation,
+ * and must be called with process lock held.
+ */
+
+void
+Amp::set_gain_automation_buffer (gain_t* g)
+{
+ _gain_automation_buffer = g;
+}
projects / ardour.git / blobdiff