From 991849b32acf83dd14a5096540bb053d2572502a Mon Sep 17 00:00:00 2001
From: Wavy Harp <wavyharp@gmail.com>
Date: Sun, 7 May 2023 23:04:53 -0600
Subject: initial import

currently everything is very tied to alsa and my system,
for the moment you'll need to manually change the device names
and maybe channels/period_size in src/main.rs, src/bin/smolguitar.rs
and src/bin/loopbacker.rs, i'll fix that and add runtime period
size/updater allocation soon, (and probably make a cpal backend as well
so it can work on other platforms), but doing this initial commit to play
around with stereo for now~
---
 src/main.rs | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/main.rs

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..022b6ce
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,66 @@
+mod notes;
+mod proc;
+mod outputers;
+mod buf;
+mod rfft;
+mod args;
+
+use crate::notes::{Notes, note_range, ProcerNotes};
+use crate::proc::{Procer, ProcerData};
+use crate::rfft::RFftProcer;
+use crate::buf::{StaticBuffer, Procers};
+use crate::outputers::{Outputers, SimpleOutputer, LineLayout};
+use crate::args::SimpleArgs;
+use clap::{Parser, CommandFactory, FromArgMatches};
+
+//use std::collections::VecDeque;
+
+fn main() {
+    const CHANNELS: u32 = 2;
+    const PERIOD_SIZE: usize = 240; // 1024 frames
+    const PROC_SIZE: usize = 1 << 14; // 16k frames (so about .3413_ of a second)
+    //let disp_threshold = 0.00372314453125;
+    //let disp_threshold = 0.00526532149076897;
+    //let disp_threshold = 50. / (i16::MAX as f32);
+    //const PERIOD_SIZE: usize = 480;
+    //const PROC_SIZE: usize = 1 << 13; // 8k
+    //let period_size = 1024;
+    let sample_rate = 48000;
+    //let proc_size = 1 << 14; // 16k (so about .3413_ of a second)
+    // we update every period_size so it updates every 21.3_ms but we keep a running average of the
+    // last 341.3_ms so low frequencies can be interpreted with the fft (using fir or iir filters
+    // or wavelets or inner product spaces and frames is something to do in the future, but for now i'm just
+    // porting older python code over for performance that used ffts, and maybe messing with dct
+    // but it'll have the same limitations of ffts mostly probably)
+    let notes = note_range((Notes::C, 2), (Notes::E, 7));
+    // US and prob BS here should be *2 when dealing with stereo, but going with mono rn
+    let rfproc: RFftProcer<f32, PERIOD_SIZE, PROC_SIZE> = RFftProcer::new(sample_rate);
+    let pnotes = rfproc.make_pnotes(&notes);
+    //println!("{:#?}", pnotes);
+    for pnote in &pnotes {
+        println!("{}", pnote);
+    }
+    println!("{}", rfproc);
+    let args = SimpleArgs::parse();
+    println!("Args: {:?}", args);
+    // TODO: having an app-specific default threshold might be a good idea for smolguitar,
+    // not sure how to do that yet, maybe there's an API for changing the default of an arg in clap
+    let disp_threshold = args.threshold;
+    //let outputer = Outputers::Simple(SimpleOutputer);
+    //let outputer = Outputers::LineLayout(LineLayout::new(0.2, true, (0., 255., 220.), &notes));
+    let outputer = args.get_outputer(&notes);
+    let rfpdata = ProcerData::new(&rfproc, ProcerNotes(pnotes, disp_threshold));
+    let mut buf: StaticBuffer<f32, PERIOD_SIZE, PROC_SIZE> = StaticBuffer::new(48000, CHANNELS, 
+        vec![(Procers::Rfft(rfproc), rfpdata)], "Microphone_c".to_string(), args.get_outdev(),
+        outputer);
+    println!("{}", buf);
+    let mut aout = alsa::Output::buffer_open().unwrap();
+    buf.adev.dump(&mut aout);
+    match &buf.outdev {
+        Some(outdev) => { outdev.dump(&mut aout); },
+        None => {},
+    }
+    println!("{}", aout);
+    buf.capture_loop();
+    //println!("{:#?}", pdata);
+}
-- 
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