channel sample rate confirmed page size

Cargo.lock

@@ -151,6 +151,46 @@ dependencies = [
  "libloading",
 ]
 
+[[package]]
+name = "clap"
+version = "4.5.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2797f34da339ce31042b27d23607e051786132987f595b02ba4f6a6dffb7030a"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.5.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24a241312cea5059b13574bb9b3861cabf758b879c15190b37b6d6fd63ab6876"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.5.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a92793da1a46a5f2a02a6f4c46c6496b28c43638adea8306fcb0caa1634f24e5"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a822ea5bc7590f9d40f1ba12c0dc3c2760f3482c6984db1573ad11031420831"
+
 [[package]]
 name = "colorchoice"
 version = "1.0.4"
@@ -161,6 +201,7 @@ checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
 name = "composer"
 version = "0.1.0"
 dependencies = [
+ "clap",
  "env_logger",
  "itertools 0.14.0",
  "midir",
@@ -285,6 +326,12 @@ version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "indexmap"
 version = "2.13.0"
@@ -663,6 +710,12 @@ version = "1.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "syn"
 version = "2.0.117"

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+clap = { version = "4.5.60", features = ["derive"] }
 env_logger = "0.11.9"
 itertools = "0.14.0"
 midir = "0.10.3"

src/main.rs

@@ -7,6 +7,8 @@ use std::sync::Arc;
 use tinyaudio::prelude::*;
 
 fn main() {
+    let flags = Flags::parse();
+
     // Load the SoundFont.
     let mut sf2 = File::open("super_small_font.sf2").unwrap();
     let sound_font = Arc::new(SoundFont::new(&mut sf2).unwrap());
@@ -14,16 +16,18 @@ fn main() {
     // Setup the audio output.
     let params = OutputDeviceParameters {
         channels_count: 2,
-        sample_rate: 44100,
-        channel_sample_count: 4410,
+        sample_rate: flags.sample_rate,
+        channel_sample_count: flags.sample_rate / flags.smallest_note,
     };
 
     // Create the synthesizer.
     let settings = SynthesizerSettings::new(params.sample_rate as i32);
     let synthesizer = Synthesizer::new(&sound_font, &settings).unwrap();
 
-    let mut syn = Syn::Real(synthesizer);
-    let mut syn = Syn::Text(std::collections::HashMap::new());
+    let mut syn = match &flags.debug{
+        false => Syn::Real(synthesizer),
+        true => Syn::Text(std::collections::HashMap::new()),
+    };
 
     // Play some notes (middle C, E, G). // 16 channels actually // 60=c 64=e 67=g //up to 128velocity though dont go below 50 tbh // 12 notes per octave
     syn.note_on(0, 64 + 12, 127);
@@ -48,6 +52,20 @@ fn main() {
     std::thread::sleep(std::time::Duration::from_secs(2));
 }
 
+use clap::Parser;
+#[derive(Parser, Debug, Clone)]
+struct Flags {
+    #[arg(short, long, default_value_t = false)] 
+    debug: bool,
+
+    #[arg(long, default_value_t = 4)] 
+    smallest_note: usize,
+
+    #[arg(long, default_value_t = 44100)] 
+    sample_rate: usize,
+}
+
+
 enum Syn {
     Real(Synthesizer),
     Text(std::collections::HashMap<i32, std::collections::HashMap<i32, i32>>),