Goofing around with examples

examples/blits.rs

@@ -9,6 +9,7 @@
 //! TODO: Implement command-line interface
 
 use std::f64;
+use std::io;
 use bwavfile::{WaveWriter, WaveFmt};
 
 fn sine_wave(t: u64, amplitude : i32, wavelength : u32) -> i32 {
@@ -88,7 +89,10 @@ impl ToneBurstSignal for Vec<ToneBurst> {
 }
 
 
-fn main() -> () {
+fn main() -> io::Result<()> {
+
+    let sample_rate = 48000;
+    let bits_per_sample = 24;
 
     // BLITS Tone signal format
     // From EBU Tech 3304 §4 - https://tech.ebu.ch/docs/tech/tech3304.pdf
@@ -190,17 +194,11 @@ fn main() -> () {
         ToneBurst::Silence(200)
     ];
 
-
-    let sample_rate = 48000;
-    let bits_per_sample = 24;
-
     let length = [&left_channel_sequence, &right_channel_sequence, 
         &center_channel_sequence, &lfe_channel_sequence, 
         &ls_channel_sequence, &rs_channel_sequence].iter()
             .map(|i| i.duration(sample_rate)).max().unwrap_or(0);
 
-    println!("Will generate tone of length {} frames", &length);
-
     let frames = (0..=length).map(|frame| {
         (left_channel_sequence.signal(frame, sample_rate, bits_per_sample),
         right_channel_sequence.signal(frame, sample_rate, bits_per_sample),
@@ -220,4 +218,5 @@ fn main() -> () {
     }
     fw.end().expect("Failed to close frame writer");
 
+    Ok(())
 }

examples/wave-deinter.rs

@@ -0,0 +1,10 @@
+//! wave-inter.rs
+//! (c) 2021 Jamie Hardt. All rights reserved.
+//! 
+//! This program demonstrats combining several wave files into a single
+//! polyphonic wave file.
+
+fn main() -> std::io::Result<()> {
+
+    Ok(())
+}

examples/wave-inter.rs

@@ -0,0 +1,32 @@
+//! wave-inter.rs
+//! (c) 2021 Jamie Hardt. All rights reserved.
+//! 
+//! This program demonstrates combining several wave files into a single
+//! polyphonic wave file.
+
+extern crate clap;
+
+use std::io;
+use clap::{Arg, App};
+
+fn main() -> io::Result<()> {
+    let matches = App::new("wave-inter")
+        .version("0.1")
+        .author("Jamie Hardt")
+        .about("Combine several wave files into a single polyphonic wave file.")
+        .arg(Arg::with_name("OUTPUT")
+            .long("output")
+            .short("o")
+            .help("Output file name. If absent, will be basename, minus any channel extension, of first INPUT.")
+        )
+        .arg(Arg::with_name("INPUT")
+            .help("Input wave file")
+            .required(true)
+            .multiple(true)
+        )
+        .get_matches();
+
+    println!("Command line opts: {:?}", matches);
+
+    Ok(())
+}