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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1997--2015 Jan Nieuwenhuizen <janneke@gnu.org>
LilyPond 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 3 of the License, or
(at your option) any later version.
LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "audio-item.hh"
#include "midi-item.hh"
#include "audio-column.hh"
Audio_instrument::Audio_instrument (string instrument_string)
{
str_ = instrument_string;
}
void
Audio_item::render ()
{
}
Audio_column *
Audio_item::get_column () const
{
return audio_column_;
}
Audio_item::Audio_item ()
: audio_column_ (0),
channel_ (0)
{
}
Audio_note::Audio_note (Pitch p, Moment m, bool tie_event, Pitch transposing,
int velocity)
: pitch_ (p),
length_mom_ (m),
transposing_ (transposing),
dynamic_ (0),
extra_velocity_ (velocity),
tied_ (0),
tie_event_ (tie_event)
{
}
void
Audio_note::tie_to (Audio_note *t, Moment skip)
{
tied_ = t;
Audio_note *first = tie_head();
// Add the skip to the tied note and the length of the appended note
// to the full duration of the tie...
first->length_mom_ += skip + length_mom_;
length_mom_ = 0;
}
Audio_note *
Audio_note::tie_head ()
{
Audio_note *first = this;
while (first->tied_)
first = first->tied_;
return first;
}
string
Audio_note::to_string () const
{
string s = "#<Audio_note pitch ";
s += pitch_.to_string();
s += " len ";
s += length_mom_.to_string();
if (tied_)
{
s += " tied to " + tied_->to_string();
}
if (tie_event_)
{
s += " tie_event";
}
s += ">";
return s;
}
Audio_key::Audio_key (int acc, bool major)
{
accidentals_ = acc;
major_ = major;
}
Audio_dynamic::Audio_dynamic ()
: volume_ (-1),
silent_ (false)
{
}
Audio_span_dynamic::Audio_span_dynamic (Real min_volume, Real max_volume)
{
grow_dir_ = CENTER;
min_volume_ = min_volume;
max_volume_ = max_volume;
}
void
Audio_span_dynamic::add_absolute (Audio_dynamic *d)
{
assert (d);
dynamics_.push_back (d);
}
Moment
remap_grace_duration (Moment m)
{
return Moment (m.main_part_ + Rational (9, 40) * m.grace_part_,
Rational (0));
}
Real
moment_to_real (Moment m)
{
return remap_grace_duration (m).main_part_.to_double ();
}
int
moment_to_ticks (Moment m)
{
return int (moment_to_real (m) * 384 * 4);
}
void
Audio_span_dynamic::render ()
{
if (dynamics_.size () <= 1)
return;
assert (dynamics_[0]->volume_ >= 0);
while (dynamics_.back ()->volume_ > 0
&& dynamics_.size () > 1
&& sign (dynamics_.back ()->volume_ - dynamics_[0]->volume_) != grow_dir_)
{
dynamics_.erase (dynamics_.end () - 1);
}
if (dynamics_.size () <= 1)
{
programming_error ("Impossible or ambiguous (de)crescendo in MIDI.");
return;
}
Real start_v = dynamics_[0]->volume_;
if (dynamics_.back ()->volume_ < 0)
{
// The dynamic spanner does not end with an explicit dynamic script
// event. Adjust the end volume by at most 1/4 of the available
// volume range in this case.
dynamics_.back ()->volume_ = max (min (start_v + grow_dir_ * (max_volume_ - min_volume_) * 0.25, max_volume_), min_volume_);
}
Real delta_v = dynamics_.back ()->volume_ - dynamics_[0]->volume_;
Moment start = dynamics_[0]->get_column ()->when ();
Real total_t = moment_to_real (dynamics_.back ()->get_column ()->when () - start);
for (vsize i = 1; i < dynamics_.size (); i++)
{
Moment dt_moment = dynamics_[i]->get_column ()->when ()
- start;
Real dt = moment_to_real (dt_moment);
Real v = start_v + delta_v * (dt / total_t);
dynamics_[i]->volume_ = v;
}
}
Audio_tempo::Audio_tempo (int per_minute_4)
{
per_minute_4_ = per_minute_4;
}
Audio_time_signature::Audio_time_signature (int beats, int one_beat)
{
beats_ = beats;
one_beat_ = one_beat;
}
Audio_text::Audio_text (Audio_text::Type type, const string &text_string)
{
text_string_ = text_string;
type_ = type;
}
Audio_control_function_value_change
::Audio_control_function_value_change (Control control, Real value)
: control_ (control), value_ (value)
{
}
const Audio_control_function_value_change::Context_property
Audio_control_function_value_change::context_properties_[] = {
// property name, enum constant, lower bound for range, upper bound for range
{ "midiBalance", BALANCE, -1.0, 1.0 },
{ "midiPanPosition", PAN_POSITION, -1.0, 1.0 },
{ "midiExpression", EXPRESSION, 0.0, 1.0 },
{ "midiReverbLevel", REVERB_LEVEL, 0.0, 1.0 },
{ "midiChorusLevel", CHORUS_LEVEL, 0.0, 1.0 },
// extra element to signify the end of the mapping, must be kept last
{ 0, NUM_CONTROLS, 0.0, 0.0 }
};
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