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use glib::prelude::*;
use std::convert;
use std::ops;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct AudioConverterConfig(gst::Structure);
impl ops::Deref for AudioConverterConfig {
type Target = gst::StructureRef;
fn deref(&self) -> &gst::StructureRef {
self.0.deref()
}
}
impl ops::DerefMut for AudioConverterConfig {
fn deref_mut(&mut self) -> &mut gst::StructureRef {
self.0.deref_mut()
}
}
impl AsRef<gst::StructureRef> for AudioConverterConfig {
fn as_ref(&self) -> &gst::StructureRef {
self.0.as_ref()
}
}
impl AsMut<gst::StructureRef> for AudioConverterConfig {
fn as_mut(&mut self) -> &mut gst::StructureRef {
self.0.as_mut()
}
}
impl Default for AudioConverterConfig {
fn default() -> Self {
AudioConverterConfig::new()
}
}
impl convert::TryFrom<gst::Structure> for AudioConverterConfig {
type Error = glib::BoolError;
fn try_from(v: gst::Structure) -> Result<AudioConverterConfig, Self::Error> {
skip_assert_initialized!();
if v.get_name() == "GstAudioConverter" {
Ok(AudioConverterConfig(v))
} else {
Err(glib_bool_error!("Structure is no AudioConverterConfig"))
}
}
}
impl<'a> convert::TryFrom<&'a gst::StructureRef> for AudioConverterConfig {
type Error = glib::BoolError;
fn try_from(v: &'a gst::StructureRef) -> Result<AudioConverterConfig, Self::Error> {
skip_assert_initialized!();
AudioConverterConfig::try_from(v.to_owned())
}
}
impl From<AudioConverterConfig> for gst::Structure {
fn from(v: AudioConverterConfig) -> gst::Structure {
skip_assert_initialized!();
v.0
}
}
impl AudioConverterConfig {
pub fn new() -> Self {
AudioConverterConfig(gst::Structure::new_empty("GstAudioConverter"))
}
pub fn set_dither_method(&mut self, v: crate::AudioDitherMethod) {
self.0.set("GstAudioConverter.dither-method", &v);
}
pub fn get_dither_method(&self) -> crate::AudioDitherMethod {
self.0
.get_optional("GstAudioConverter.dither-method")
.expect("Wrong type")
.unwrap_or(crate::AudioDitherMethod::None)
}
pub fn set_noise_shaping_method(&mut self, v: crate::AudioNoiseShapingMethod) {
self.0.set("GstAudioConverter.noise-shaping-method", &v);
}
pub fn get_noise_shaping_method(&self) -> crate::AudioNoiseShapingMethod {
self.0
.get_optional("GstAudioConverter.noise-shaping-method")
.expect("Wrong type")
.unwrap_or(crate::AudioNoiseShapingMethod::None)
}
pub fn set_quantization(&mut self, v: u32) {
self.0.set("GstAudioConverter.quantization", &v);
}
pub fn get_quantization(&self) -> u32 {
self.0
.get_optional("GstAudioConverter.quantization")
.expect("Wrong type")
.unwrap_or(1)
}
#[cfg(any(feature = "v1_10", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_10")))]
pub fn set_resampler_method(&mut self, v: crate::AudioResamplerMethod) {
self.0.set("GstAudioConverter.resampler-method", &v);
}
#[cfg(any(feature = "v1_10", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_10")))]
pub fn get_resampler_method(&self) -> crate::AudioResamplerMethod {
self.0
.get_optional("GstAudioConverter.resampler-method")
.expect("Wrong type")
.unwrap_or(crate::AudioResamplerMethod::BlackmanNuttall)
}
pub fn set_mix_matrix<T: AsRef<[f32]>>(&mut self, v: &[T]) {
let length = v.get(0).map(|v| v.as_ref().len()).unwrap_or(0);
let array = gst::Array::from_owned(
v.iter()
.map(|val| {
let val = val.as_ref();
assert_eq!(val.len(), length);
gst::Array::from_owned(
val.iter()
.map(|val| val.to_send_value())
.collect::<Vec<_>>(),
)
.to_send_value()
})
.collect::<Vec<_>>(),
);
self.0.set("GstAudioConverter.mix-matrix", &array);
}
pub fn get_mix_matrix(&self) -> Vec<Vec<f32>> {
self.0
.get_optional::<gst::Array>("GstAudioConverter.mix-matrix")
.expect("Wrong type")
.map(|array| {
array
.as_slice()
.iter()
.map(|val| {
let array = val
.get::<gst::Array>()
.expect("Wrong type")
.unwrap_or_else(|| gst::Array::from_owned(Vec::new()));
array
.as_slice()
.iter()
.map(|val| val.get_some::<f32>().expect("Wrong type"))
.collect::<Vec<_>>()
})
.collect::<Vec<_>>()
})
.unwrap_or_else(Vec::new)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_mix_matrix() {
const MATRIX: &[&[f32]] = &[&[1.2, 0.3], &[0.2, 0.8]];
gst::init().unwrap();
let mut config = AudioConverterConfig::new();
config.set_mix_matrix(MATRIX);
let matrix = config.get_mix_matrix();
assert_eq!(matrix, MATRIX);
config.set_mix_matrix(&matrix);
}
}