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limit loaded sample length to 1 minute

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This commit is contained in:
Weird Constructor 2022-07-18 18:48:25 +02:00
parent 678bcd07b4
commit ed5d8f9cea
1 changed files with 8 additions and 3 deletions
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11
src/sample_lib.rs
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@ -19,15 +19,18 @@ impl From<hound::Error> for SampleLoadError {
} }
} }
const MAX_SAMPLE_LEN_S: usize = 60; // 60 seconds of audio is about 20MB
/// Loads and stores samples, for use as SAtom parameters for /// Loads and stores samples, for use as SAtom parameters for
/// nodes. /// nodes.
pub struct SampleLibrary { pub struct SampleLibrary {
loaded_samples: HashMap<String, SAtom>, loaded_samples: HashMap<String, SAtom>,
max_length_s: usize,
} }
impl SampleLibrary { impl SampleLibrary {
pub fn new() -> Self { pub fn new() -> Self {
Self { loaded_samples: HashMap::new() } Self { loaded_samples: HashMap::new(), max_length_s: MAX_SAMPLE_LEN_S }
} }
/// Synchronous/blocking loading of a sample from `path`. /// Synchronous/blocking loading of a sample from `path`.
@ -49,15 +52,17 @@ impl SampleLibrary {
let mut v = vec![rd.spec().sample_rate as f32]; let mut v = vec![rd.spec().sample_rate as f32];
let max_sample_count = self.max_length_s * rd.spec().sample_rate as usize;
match rd.spec().sample_format { match rd.spec().sample_format {
hound::SampleFormat::Float => { hound::SampleFormat::Float => {
for s in rd.samples::<f32>().step_by(channels) { for s in rd.samples::<f32>().step_by(channels).take(max_sample_count) {
v.push(s?); v.push(s?);
} }
} }
// http://blog.bjornroche.com/2009/12/int-float-int-its-jungle-out-there.html // http://blog.bjornroche.com/2009/12/int-float-int-its-jungle-out-there.html
hound::SampleFormat::Int => { hound::SampleFormat::Int => {
for s in rd.samples::<i16>().step_by(channels) { for s in rd.samples::<i16>().step_by(channels).take(max_sample_count) {
let s = s?; let s = s?;
let s = s as f32 / (0x8000 as f32); let s = s as f32 / (0x8000 as f32);
v.push(s); v.push(s);