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use std::io;
use std::io::*;
extern crate synfone;
use synfone::synth::*;
const FRAMES: usize = 44100 * 2;
fn main() {
let mut params = Parameters::default();
let mut freq: GenBox = Box::new(Param { name: "freq".to_string(), default: 440.0, buf: SampleBuffer::new(1) });
let mut sg: GenBox = Box::new(Saw { freq: freq, phase: 0.0, buf: SampleBuffer::new(params.env.default_buffer_size) });
let mut freq2: GenBox = Box::new(Param { name: "freq2".to_string(), default: 660.0, buf: SampleBuffer::new(1) });
let mut sg2: GenBox = Box::new(Sine { freq: freq2, phase: 0.0, buf: SampleBuffer::new(params.env.default_buffer_size) });
let mut half1: GenBox = Box::new(Param { name: "half".to_string(), default: 1.0, buf: SampleBuffer::new(1) });
let mut half2: GenBox = Box::new(Param { name: "half".to_string(), default: 0.0, buf: SampleBuffer::new(1) });
let mut sc1: GenBox = Box::new(Mul { factors: vec![sg, half1], buf: SampleBuffer::new(params.env.default_buffer_size) });
let mut sc2: GenBox = Box::new(Mul { factors: vec![sg2, half2], buf: SampleBuffer::new(params.env.default_buffer_size) });
let mut gen: GenBox = Box::new(Add { terms: vec![sc1, sc2], buf: SampleBuffer::new(params.env.default_buffer_size) });
let mut counter = 0;
let mut out = io::stdout();
let mut outbuf: Vec<u8> = Vec::new();
params.vars.insert("freq".to_string(), 440.0);
params.vars.insert("freq2".to_string(), 660.0);
while counter < FRAMES {
*params.vars.get_mut("freq").unwrap() = 440.0 + 440.0 * ((counter as f32) / (FRAMES as f32));
*params.vars.get_mut("freq2").unwrap() = 660.0 + 220.0 * ((counter as f32) / (FRAMES as f32));
let buf = gen.eval(¶ms);
let curlen = outbuf.len();
outbuf.reserve_exact(buf.size() - curlen);
unsafe { outbuf.set_len(buf.size()); }
buf.bytes(&mut outbuf);
out.write_all(&outbuf);
counter += buf.len();
}
}
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