19 lines
806 B
Rust
19 lines
806 B
Rust
use std;
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extern crate hound;
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type FileReader = std::io::BufReader<std::fs::File>;
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pub fn float_sample_iterator<'a>(reader: &'a mut hound::WavReader<FileReader>)
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-> Box<Iterator<Item=f32> + 'a> {
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match reader.spec().sample_format {
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hound::SampleFormat::Float => Box::new(reader.samples::<f32>().map(|x| x.unwrap())),
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hound::SampleFormat::Int => match reader.spec().bits_per_sample {
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8 => Box::new(reader.samples::<i8>().map(|x| (x.unwrap() as f32) / (i16::max_value() as f32))),
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16 => Box::new(reader.samples::<i16>().map(|x| (x.unwrap() as f32) / (i16::max_value() as f32))),
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32 => Box::new(reader.samples::<i32>().map(|x| (x.unwrap() as f32) / (i32::max_value() as f32))),
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_ => panic!("Unsupported sample rate")
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}
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}
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}
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