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use super::*;
use std::mem;
#[derive(Debug)]
pub struct Add {
pub terms: Vec<GenBox>,
pub buf: SampleBuffer,
}
impl Generator for Add {
fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer {
if self.terms.is_empty() {
self.buf.zero();
} else {
let (first, next) = self.terms.split_at_mut(1);
self.buf.update_from(first[0].eval(params));
for term in next {
self.buf.sum_into(term.eval(params));
}
}
&self.buf
}
fn buffer(&self) -> &SampleBuffer { &self.buf }
fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
mem::replace(&mut self.buf, buf)
}
}
pub struct AddFactory;
impl GeneratorFactory for AddFactory {
fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
Ok(Box::new(Add {
terms: params.get_pos_params().into_iter().map(|x| x.into_gen()).collect::<Result<Vec<_>, _>>()?,
buf: SampleBuffer::new(params.env.default_buffer_size),
}))
}
}
pub static FactoryAdd: AddFactory = AddFactory;
#[derive(Debug)]
pub struct Mul {
pub factors: Vec<GenBox>,
pub buf: SampleBuffer,
}
impl Generator for Mul {
fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer {
if self.factors.is_empty() {
self.buf.zero();
} else {
let (first, next) = self.factors.split_at_mut(1);
self.buf.update_from(first[0].eval(params));
for factor in next {
self.buf.mul_into(factor.eval(params));
}
}
&self.buf
}
fn buffer(&self) -> &SampleBuffer { &self.buf }
fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
mem::replace(&mut self.buf, buf)
}
}
pub struct MulFactory;
impl GeneratorFactory for MulFactory {
fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
Ok(Box::new(Mul {
factors: params.get_pos_params().into_iter().map(|x| x.into_gen()).collect::<Result<Vec<_>, _>>()?,
buf: SampleBuffer::new(params.env.default_buffer_size),
}))
}
}
pub static FactoryMul: MulFactory = MulFactory;
#[derive(Debug)]
pub struct Negate {
pub value: GenBox,
pub buf: SampleBuffer,
}
impl Generator for Negate {
fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer {
self.buf.update_from(self.value.eval(params));
match self.buf.rate {
Rate::Sample => {
for v in self.buf.iter_mut() {
*v *= -1.0;
}
},
Rate::Control => {
self.buf[0] *= -1.0;
},
}
&self.buf
}
fn buffer(&self) -> &SampleBuffer { &self.buf }
fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
mem::replace(&mut self.buf, buf)
}
}
pub struct NegateFactory;
impl GeneratorFactory for NegateFactory {
fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
let gen = params.remove_param("value", 0)?.into_gen()?;
let len = gen.buffer().len();
Ok(Box::new(Negate {
value: gen,
buf: SampleBuffer::new(len),
}))
}
}
pub static FactoryNegate: NegateFactory = NegateFactory;
#[derive(Debug)]
pub struct Reciprocate {
pub value: GenBox,
pub buf: SampleBuffer,
}
impl Generator for Reciprocate {
fn eval<'a>(&'a mut self, params: &Parameters) -> &'a SampleBuffer {
self.buf.update_from(self.value.eval(params));
match self.buf.rate {
Rate::Sample => {
for v in self.buf.iter_mut() {
*v = v.powf(-1.0);
}
},
Rate::Control => {
self.buf[0] = self.buf[0].powf(-1.0);
},
}
&self.buf
}
fn buffer(&self) -> &SampleBuffer { &self.buf }
fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
mem::replace(&mut self.buf, buf)
}
}
pub struct ReciprocateFactory;
impl GeneratorFactory for ReciprocateFactory {
fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
let gen = params.remove_param("value", 0)?.into_gen()?;
let len = gen.buffer().len();
Ok(Box::new(Reciprocate {
value: gen,
buf: SampleBuffer::new(len),
}))
}
}
pub static FactoryReciprocate: ReciprocateFactory = ReciprocateFactory;
|
