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use std::collections::HashMap;
use crate::{
events::NoteID,
synth::{
NumericGlobalExpression, NumericPerNoteExpression, SwitchGlobalExpression,
SynthParamBufferStates, SynthParamStates,
},
};
use super::super::{
BufferState, BufferStates, EnumBufferState, InternalValue, NumericBufferState,
PiecewiseLinearCurvePoint, States, SwitchBufferState, TimedValue,
};
use super::states_map::{StatesMap, SynthStatesMap};
/// Simple implementation of [`BufferStates`] trait where every parameter is
/// constant throughout the whole buffer.
///
/// This is in general useful for testing or other scenarios where you need
/// to create a [`BufferStates`] object outside of a Conformal wrapper.
#[derive(Clone, Debug, Default)]
pub struct ConstantBufferStates<S> {
s: S,
}
impl<S: States> BufferStates for ConstantBufferStates<S> {
fn get_by_hash(
&self,
id_hash: super::super::IdHash,
) -> std::option::Option<
BufferState<
impl Iterator<Item = PiecewiseLinearCurvePoint> + Clone,
impl Iterator<Item = TimedValue<u32>> + Clone,
impl Iterator<Item = TimedValue<bool>> + Clone,
>,
> {
match self.s.get_by_hash(id_hash) {
Some(InternalValue::Numeric(n)) => {
Some(BufferState::Numeric(NumericBufferState::<
std::iter::Empty<PiecewiseLinearCurvePoint>,
>::Constant(n)))
}
Some(InternalValue::Enum(e)) => Some(BufferState::Enum(EnumBufferState::<
std::iter::Empty<TimedValue<u32>>,
>::Constant(e))),
Some(InternalValue::Switch(s)) => Some(BufferState::Switch(SwitchBufferState::<
std::iter::Empty<TimedValue<bool>>,
>::Constant(s))),
None => None,
}
}
}
impl<S: SynthParamStates> SynthParamBufferStates for ConstantBufferStates<S> {
fn get_numeric_global_expression(
&self,
expression: NumericGlobalExpression,
) -> NumericBufferState<impl Iterator<Item = PiecewiseLinearCurvePoint> + Clone> {
NumericBufferState::<std::iter::Empty<PiecewiseLinearCurvePoint>>::Constant(
self.s.get_numeric_global_expression(expression),
)
}
fn get_switch_global_expression(
&self,
expression: SwitchGlobalExpression,
) -> SwitchBufferState<impl Iterator<Item = TimedValue<bool>> + Clone> {
SwitchBufferState::<std::iter::Empty<TimedValue<bool>>>::Constant(
self.s.get_switch_global_expression(expression),
)
}
fn get_numeric_expression_for_note(
&self,
expression: NumericPerNoteExpression,
note_id: NoteID,
) -> NumericBufferState<impl Iterator<Item = PiecewiseLinearCurvePoint> + Clone> {
NumericBufferState::<std::iter::Empty<PiecewiseLinearCurvePoint>>::Constant(
self.s.get_numeric_expression_for_note(expression, note_id),
)
}
}
impl<S: States> ConstantBufferStates<S> {
/// Create a new [`ConstantBufferStates`] object from a [`States`] object.
pub fn new(s: S) -> Self {
Self { s }
}
}
impl ConstantBufferStates<StatesMap> {
/// Create a new [`ConstantBufferStates`] object from a list of `Info`s and `override`s.
///
/// This creates a `ConstantBufferStates` with all parameters set to default values
/// for the whole buffer.
///
/// Note that if you want to pass this into a synth, you should use
/// [`Self::new_override_synth_defaults`] instead.
///
/// `overrides` work exactly as in [`override_defaults`].
///
/// # Examples
///
/// ```
/// # use conformal_component::parameters::{StaticInfoRef, InternalValue, TypeSpecificInfoRef, ConstantBufferStates, BufferStates, NumericBufferState};
/// let infos = vec![
/// StaticInfoRef {
/// title: "Numeric",
/// short_title: "Numeric",
/// unique_id: "numeric",
/// flags: Default::default(),
/// type_specific: TypeSpecificInfoRef::Numeric {
/// default: 0.0,
/// valid_range: 0.0..=1.0,
/// units: None,
/// },
/// },
/// ];
/// let overrides = vec![("numeric", InternalValue::Numeric(0.5))].into_iter().collect();
/// let buffer_states = ConstantBufferStates::new_override_defaults(infos, &overrides);
/// match buffer_states.get_numeric("numeric") {
/// Some(NumericBufferState::Constant(0.5)) => (),
/// _ => panic!("Expected constant value of 0.5"),
/// };
/// ```
pub fn new_override_defaults<'a, S: AsRef<str> + 'a>(
infos: impl IntoIterator<Item = super::super::InfoRef<'a, S>> + 'a,
overrides: &HashMap<&'_ str, InternalValue>,
) -> Self {
Self::new(StatesMap::new_override_defaults(infos, overrides))
}
/// Create a new [`ConstantBufferStates`] object from a list of `Info`s.
///
/// Each parameter in `Info`s will be set to its default value for the whole buffer.
///
/// Note that if you want to pass this into a synth, you should use
/// [`Self::new_synth_defaults`] instead.
///
/// # Examples
///
/// ```
/// # use conformal_component::parameters::{StaticInfoRef, InternalValue, TypeSpecificInfoRef, ConstantBufferStates, BufferStates, NumericBufferState};
/// let infos = vec![
/// StaticInfoRef {
/// title: "Numeric",
/// short_title: "Numeric",
/// unique_id: "numeric",
/// flags: Default::default(),
/// type_specific: TypeSpecificInfoRef::Numeric {
/// default: 0.0,
/// valid_range: 0.0..=1.0,
/// units: None,
/// },
/// },
/// ];
///
/// let buffer_states = ConstantBufferStates::new_defaults(infos);
/// match buffer_states.get_numeric("numeric") {
/// Some(NumericBufferState::Constant(0.0)) => (),
/// _ => panic!("Expected constant value of 0.0"),
/// };
/// ```
pub fn new_defaults<'a, S: AsRef<str> + 'a>(
infos: impl IntoIterator<Item = super::super::InfoRef<'a, S>> + 'a,
) -> Self {
Self::new_override_defaults(infos, &Default::default())
}
}
impl ConstantBufferStates<SynthStatesMap> {
/// Create a new [`ConstantBufferStates`] object to pass to a synth from a list of `Info`s and `override`s.
///
/// This is similar to [`Self::new_override_defaults`], but it also includes expression controllers.
///
///
/// # Examples
///
/// ```
/// # use conformal_component::parameters::{StaticInfoRef, InternalValue, TypeSpecificInfoRef, ConstantBufferStates, BufferStates, NumericBufferState, SynthStatesMap};
/// # use conformal_component::synth::{SynthParamBufferStates, NumericGlobalExpression};
///
/// let infos = vec![
/// StaticInfoRef {
/// title: "Numeric",
/// short_title: "Numeric",
/// unique_id: "numeric",
/// flags: Default::default(),
/// type_specific: TypeSpecificInfoRef::Numeric {
/// default: 0.0,
/// valid_range: 0.0..=1.0,
/// units: None,
/// },
/// },
/// ];
/// let overrides = vec![
/// // You can override declared parameters
/// ("numeric", InternalValue::Numeric(0.5)),
/// ].into_iter().collect();
///
/// // and you can override control parameters
/// let expression_overrides = vec![
/// (NumericGlobalExpression::ModWheel, 0.2),
/// ].into_iter().collect();
///
/// let buffer_states = ConstantBufferStates::new_override_synth_defaults(infos, &overrides, &expression_overrides, &Default::default());
///
/// // Overridden parameters get the values you passed in
/// match buffer_states.get_numeric("numeric") {
/// Some(NumericBufferState::Constant(0.5)) => (),
/// _ => panic!("Expected constant value of 0.5"),
/// };
/// match buffer_states.get_numeric_global_expression(NumericGlobalExpression::ModWheel) {
/// NumericBufferState::Constant(0.2) => (),
/// _ => panic!("Expected constant value of 0.2"),
/// };
///
/// // Other parameters get their default values
/// match buffer_states.get_numeric_global_expression(NumericGlobalExpression::PitchBend) {
/// NumericBufferState::Constant(0.0) => (),
/// _ => panic!("Expected constant value of 0.0"),
/// };
/// ```
pub fn new_override_synth_defaults<'a, 'b: 'a>(
infos: impl IntoIterator<Item = super::super::InfoRef<'a, &'b str>> + 'a,
overrides: &HashMap<&'_ str, InternalValue>,
numeric_expression_overrides: &HashMap<NumericGlobalExpression, f32>,
switch_expression_overrides: &HashMap<SwitchGlobalExpression, bool>,
) -> Self {
Self::new(SynthStatesMap::new_override_defaults(
infos,
overrides,
numeric_expression_overrides,
switch_expression_overrides,
))
}
/// Create a new [`ConstantBufferStates`] object to pass to a synth from a list of `Info`s.
///
/// Each parameter in `Info`s will be set to its default value for the whole buffer.
///
/// This is similar to [`Self::new_defaults`], but it also includes expression controllers.
///
/// # Examples
///
/// ```
/// # use conformal_component::parameters::{StaticInfoRef, InternalValue, TypeSpecificInfoRef, ConstantBufferStates, BufferStates, NumericBufferState, SynthStatesMap};
/// # use conformal_component::synth::{SynthParamBufferStates, NumericGlobalExpression};
/// let infos = vec![
/// StaticInfoRef {
/// title: "Numeric",
/// short_title: "Numeric",
/// unique_id: "numeric",
/// flags: Default::default(),
/// type_specific: TypeSpecificInfoRef::Numeric {
/// default: 0.0,
/// valid_range: 0.0..=1.0,
/// units: None,
/// },
/// },
/// ];
///
/// let buffer_states = ConstantBufferStates::new_synth_defaults(infos);
/// match buffer_states.get_numeric("numeric") {
/// Some(NumericBufferState::Constant(0.0)) => (),
/// _ => panic!("Expected constant value of 0.0"),
/// };
/// match buffer_states.get_numeric_global_expression(NumericGlobalExpression::ModWheel) {
/// NumericBufferState::Constant(0.0) => (),
/// _ => panic!("Expected constant value of 0.0"),
/// };
/// ```
pub fn new_synth_defaults<'a, 'b: 'a>(
infos: impl IntoIterator<Item = super::super::InfoRef<'a, &'b str>> + 'a,
) -> Self {
Self::new_override_synth_defaults(
infos,
&Default::default(),
&Default::default(),
&Default::default(),
)
}
}