Initial commit

.gitignore

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+target

Cargo.lock

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+[root]
+name = "apt-decoder"
+version = "0.1.0"
+dependencies = [
+ "hound 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "hound"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum hound 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1e971fe26207d3ccdc66806fd9154508b28101fccb53fe152695e3ebcb53bd0f"

Cargo.toml

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+[package]
+name = "apt-decoder"
+version = "0.1.0"
+authors = ["LongHairedHacker <sebastian@sebastians-site.de>"]
+
+[dependencies]
+hound = "2.0.0"

src/main.rs

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+extern crate hound;
+
+fn float_sample_iterator<'a>(reader: &'a mut hound::WavReader<std::io::BufReader<std::fs::File>>)
+    -> Box<Iterator<Item=f32> + 'a> {
+    match reader.spec().sample_format {
+        hound::SampleFormat::Float => Box::new(reader.samples::<f32>().map(|x| x.unwrap())),
+        hound::SampleFormat::Int => match reader.spec().bits_per_sample {
+            8 => Box::new(reader.samples::<i8>().map(|x| (x.unwrap() as f32) / (i16::max_value() as f32))),
+            16 => Box::new(reader.samples::<i16>().map(|x| (x.unwrap() as f32) / (i16::max_value() as f32))),
+            32 => Box::new(reader.samples::<i32>().map(|x| (x.unwrap() as f32) / (i32::max_value() as f32))),
+            _ => panic!("Unsupported sample rate")
+        }
+    }
+}
+
+
+fn main() {
+    let carrier_freq = 2400;
+
+    let mut reader = match hound::WavReader::open("noaa19_short.wav") {
+        Err(e) => panic!("Could not open inputfile: {}", e),
+        Ok(r) => r
+    };
+
+    if reader.spec().channels != 1 {
+        panic!("Expected a mono file");
+    }
+
+    let sample_rate = reader.spec().sample_rate;
+    println!("Samplerate: {}", sample_rate);
+
+    let mut samples = float_sample_iterator(&mut reader);
+
+    for sample in samples {
+        println!("Sample: {}", sample )
+    }
+}