mimium-symphonia

An external function implementation to read audio files in mimium using Symphonia crate.

Example

//Sampler_mono! macro returns a closure that takes playback position in samples as an argument
let sampler = Sampler_mono!("test.wav")
fn counter(){
    self+1
}
fn dsp(){
    counter() |> sampler
}

Current status

• The Sampler_mono! macro loads audio files at compile time and caches them in the plugin instance.
• An argument for Sampler_mono! is a path relative to the current working directory (typically the crate root during compilation), or an absolute path.
• Currently only string literals are supported as arguments (parametric file loading is not supported).
• Supported file formats are the same as what symphonia can decode
• Currently, only mono files are supported (other formats will cause panic on runtime).
• An index for sampler is a raw position of samples (samplerate mismatch between audio driver and audio file are not handled. Resampler is not implemented as a part of symphonia, but there's an example code of resampler in symphonia-play application, it can be derived in the future).
• An index does not need to be an integer; boundary checks and linear interpolation are performed on read (access out of range returns 0.0).
• The audio data loaded by the macro is cached and reused across re-compilations based on the file path.