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#include "instrument.h"
#include <hugin.hpp>
#include "sample.h"
Instrument::Instrument(Settings& settings)
: settings(settings)
{
DEBUG(instrument, "new %p\n", this);
mod = 1.0;
lastpos = 0;
magic = this;
}
Instrument::~Instrument()
{
magic = nullptr;
DEBUG(instrument, "delete %p\n", this);
std::vector<AudioFile*>::iterator i = audiofiles.begin();
while(i != audiofiles.end())
{
delete *i;
i++;
}
}
bool Instrument::isValid() const
{
return this == magic;
}
Sample* Instrument::sample(level_t level, size_t pos)
{
auto enable_velocity_randomiser = settings.enable_velocity_randomiser.load();
auto velocity_randomiser_weight = settings.velocity_randomiser_weight.load();
auto samplerate = settings.samplerate.load();
auto velocity_modifier_falloff = settings.velocity_modifier_falloff.load();
auto enable_velocity_modifier = settings.enable_velocity_modifier.load();
auto velocity_modifier_weight = settings.velocity_modifier_weight.load();
Sample *sample = nullptr;
if(enable_velocity_modifier == false)
{
mod = 1.0;
lastpos = 0;
}
if(enable_velocity_randomiser)
{
float r = rand.floatInRange(-1.0 * velocity_randomiser_weight,
velocity_randomiser_weight);
level += r;
if(level > 1.0)
{
level = 1.0;
}
if(level < 0.0)
{
level = 0.0;
}
}
if(enable_velocity_modifier)
{
mod += (pos - lastpos) / (samplerate * velocity_modifier_falloff);
if(mod > 1.0)
{
mod = 1.0;
}
}
if(version >= VersionStr("2.0"))
{
sample = powerlist.get(level * mod);
}
else
{
std::vector<Sample*> s = samples.get(level * mod);
if(s.size() == 0)
{
return nullptr;
}
sample = rand.choose(s);
}
if(enable_velocity_modifier)
{
lastpos = pos;
mod *= velocity_modifier_weight;
}
return sample;
}
void Instrument::addSample(level_t a, level_t b, Sample* s)
{
samples.insert(a, b, s);
}
void Instrument::finalise()
{
if(version >= VersionStr("2.0"))
{
std::vector<Sample*>::iterator s = samplelist.begin();
while(s != samplelist.end())
{
powerlist.add(*s);
s++;
}
powerlist.finalise();
}
}
std::string Instrument::getName() const
{
return _name;
}
std::string Instrument::getDescription() const
{
return _description;
}
std::string Instrument::getGroup() const
{
return _group;
}
void Instrument::setGroup(const std::string& g)
{
_group = g;
}
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