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use std::fmt;
use crate::backend::sample_rescaling::f32_to_i16;
use crate::backend::waveform::Waveform;
use serde::{Deserialize, Serialize};
#[derive(Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct IntWaveform {
interleaved_samples: Vec<i16>,
frame_rate_hz: u32,
num_channels: u32,
num_frames: u64,
}
impl From<crate::backend::float_waveform::FloatWaveform> for IntWaveform {
fn from(item: crate::backend::float_waveform::FloatWaveform) -> Self {
let buffer: Vec<i16> = item
.interleaved_samples()
.iter()
.map(|val| f32_to_i16(*val))
.collect();
IntWaveform {
interleaved_samples: buffer,
frame_rate_hz: item.frame_rate_hz(),
num_channels: item.num_channels(),
num_frames: item.num_frames(),
}
}
}
impl fmt::Debug for IntWaveform {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"IntWaveform {{ frame_rate_hz: {}, num_channels: {}, num_frames: {}}}",
self.frame_rate_hz(),
self.num_channels(),
self.num_frames()
)
}
}
impl crate::backend::waveform::Waveform<i16> for IntWaveform {
fn new(frame_rate_hz: u32, num_channels: u32, interleaved_samples: Vec<i16>) -> Self {
let num_frames = interleaved_samples.len() as u64 / num_channels as u64;
IntWaveform {
interleaved_samples,
frame_rate_hz,
num_channels,
num_frames,
}
}
fn frame_rate_hz(&self) -> u32 {
self.frame_rate_hz
}
fn num_channels(&self) -> u32 {
self.num_channels
}
fn num_frames(&self) -> u64 {
self.num_frames
}
fn interleaved_samples(&self) -> &[i16] {
&self.interleaved_samples
}
}