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use crate::{
check_init, ffi,
vec::{FVec, FVecMut},
Result, Smpl, Status,
};
/**
* Recognized note data
*/
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Note {
pub pitch: Smpl,
pub velocity: Smpl,
}
impl Note {
fn parse(values: &[Smpl; 3]) -> Vec<Self> {
let mut notes = Vec::new();
if values[2] != 0.0 {
notes.push(Self {
pitch: values[2],
velocity: 0.0,
});
}
if values[0] != 0.0 {
notes.push(Self {
pitch: values[0],
velocity: values[1],
});
}
notes
}
}
/**
* Notes detection object
*/
pub struct Notes {
notes: *mut ffi::aubio_notes_t,
hop_size: usize,
}
impl Drop for Notes {
fn drop(&mut self) {
unsafe { ffi::del_aubio_notes(self.notes) }
}
}
impl Notes {
/**
* Create notes detection object
*
* - `buf_size` Buffer size for phase vocoder
* - `hop_size` Hop size for phase vocoder
* - `samplerate` Sampling rate of the input signal
*/
pub fn new(buf_size: usize, hop_size: usize, sample_rate: u32) -> Result<Self> {
let notes = unsafe {
ffi::new_aubio_notes(
"default\0".as_ptr() as *const _,
buf_size as ffi::uint_t,
hop_size as ffi::uint_t,
sample_rate as ffi::uint_t,
)
};
check_init(notes)?;
Ok(Self { notes, hop_size })
}
/**
* Set notes detection silence threshold
*/
pub fn with_silence(mut self, silence: Smpl) -> Self {
self.set_silence(silence);
self
}
/**
* Set notes detection minimum inter-onset interval, in millisecond
*/
pub fn with_minioi_ms(mut self, minioi: Smpl) -> Self {
self.set_minioi_ms(minioi);
self
}
/**
* Set note release drop level, in dB
*/
pub fn with_release_drop(mut self, release_drop: Smpl) -> Self {
self.set_release_drop(release_drop);
self
}
/**
* Get hop size
*/
pub fn get_hop(&self) -> usize {
self.hop_size
}
/**
* Execute note detection on an input signal frame
*
* - `input` Input signal of size `hop_size`
* - `output` Output notes, fvec of length 3
*
* The notes output is a vector of length 3 containing:
*
* 0. the midi note value, or 0 if no note was found
* 1. the note velocity
* 2. the midi note to turn off
*/
pub fn do_<'i, 'o, I, O>(&mut self, input: I, output: O) -> Status
where
I: Into<FVec<'i>>,
O: Into<FVecMut<'o>>,
{
let input = input.into();
let mut output = output.into();
input.check_size(self.get_hop())?;
output.check_size(3)?;
unsafe { ffi::aubio_notes_do(self.notes, input.as_ptr(), output.as_mut_ptr()) }
Ok(())
}
/**
* Execute note detection on an input signal frame
*/
pub fn do_result<'i, I>(&mut self, input: I) -> Result<Vec<Note>>
where
I: Into<FVec<'i>>,
{
let mut output = [0.; 3];
self.do_(input, output.as_mut())?;
Ok(Note::parse(&output))
}
/**
* Set notes detection silence threshold
*/
pub fn set_silence(&mut self, silence: Smpl) {
unsafe {
ffi::aubio_notes_set_silence(self.notes, silence);
}
}
/**
* Get notes detection silence threshold
*/
pub fn get_silence(&self) -> Smpl {
unsafe { ffi::aubio_notes_get_silence(self.notes) }
}
/**
* Set notes detection minimum inter-onset interval, in millisecond
*/
pub fn set_minioi_ms(&mut self, minioi: Smpl) {
unsafe {
ffi::aubio_notes_set_minioi_ms(self.notes, minioi);
}
}
/**
* Get notes detection minimum inter-onset interval, in millisecond
*/
pub fn get_minioi_ms(&self) -> Smpl {
unsafe { ffi::aubio_notes_get_minioi_ms(self.notes) }
}
/**
* Set note release drop level, in dB
*/
pub fn set_release_drop(&mut self, release_drop: Smpl) {
unsafe {
ffi::aubio_notes_set_release_drop(self.notes, release_drop);
}
}
/**
* Get notes release drop level, in dB
*/
pub fn get_release_drop(&self) -> Smpl {
unsafe { ffi::aubio_notes_get_release_drop(self.notes) }
}
}