Examples interface

Notes on Bext

examples/blits.rs

@@ -206,6 +206,7 @@ fn create_blits_file(file_name: &str, sample_rate : u32, bits_per_sample : u16)
     let format = WaveFmt::new_pcm_multichannel(sample_rate, bits_per_sample as u16, 0b111111);
 
     let file = WaveWriter::create(file_name, format)?;
+
     let mut fw = file.audio_frame_writer()?;
     for frame in frames {
         let buf = vec![frame.0, frame.1, frame.2, frame.3, frame.4, frame.5];
@@ -216,13 +217,15 @@ fn create_blits_file(file_name: &str, sample_rate : u32, bits_per_sample : u16)
     Ok(())
 }
 
+#[macro_use]
+extern crate clap;
 use clap::{Arg, App};
 
 fn main() -> io::Result<()> {
 
     let matches = App::new("blits")
-    .version("0.1")
-    .author("Jamie Hardt")
+    .version(crate_version!())
+    .author(crate_authors!())
     .about("Generate a BLITS 5.1 alignment tone.")
     .arg(Arg::with_name("sample_rate")
         .long("sample-rate")    

examples/wave-deinter.rs

@@ -4,16 +4,17 @@
 //! This program demonstrats combining several wave files into a single
 //! polyphonic wave file.
 
-extern crate clap;
-
 use std::io;
+
+#[macro_use]
+extern crate clap;
 use clap::{Arg, App};
 
 fn main() -> io::Result<()> {
 
     let matches = App::new("wave-deinter")
-        .version("0.1")
-        .author("Jamie Hardt")
+        .version(crate_version!())
+        .author(crate_authors!())
         .about("Extract each channel of a polyphonic wave file as a new monoaural wave file.")
         .arg(Arg::with_name("OUTPUT")
             .long("output")

examples/wave-inter.rs

@@ -4,15 +4,16 @@
 //! This program demonstrates combining several wave files into a single
 //! polyphonic wave file.
 
-extern crate clap;
-
 use std::io;
+
+#[macro_use]
+extern crate clap;
 use clap::{Arg, App};
 
 fn main() -> io::Result<()> {
     let matches = App::new("wave-inter")
-        .version("0.1")
-        .author("Jamie Hardt")
+        .version(crate_version!())
+        .author(crate_authors!())
         .about("Combine several wave files into a single polyphonic wave file.")
         .arg(Arg::with_name("OUTPUT")
             .long("output")

src/bext.rs

@@ -20,6 +20,10 @@ pub type Decibels = f32;
 /// - [EBU Tech R099](https://tech.ebu.ch/docs/r/r099.pdf) (October 2011) "‘Unique’ Source Identifier (USID) for use in the 
 ///   <OriginatorReference> field of the Broadcast Wave Format"
 
+// Note for me later:
+// get env values: https://doc.rust-lang.org/std/macro.option_env.html
+// Cargo env values: https://doc.rust-lang.org/cargo/reference/environment-variables.html
+
 #[derive(Debug)]
 pub struct Bext {