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|
pub mod sequencer;
pub use self::sequencer::*;
pub mod file;
use std::collections::HashMap;
use std::{cmp, ops};
use super::Pitch;
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Seconds(pub f32);
impl Eq for Seconds {}
impl PartialOrd for Seconds {
fn partial_cmp(&self, other: &Seconds) -> Option<cmp::Ordering> {
self.0.partial_cmp(&other.0)
}
}
impl Ord for Seconds {
fn cmp(&self, other: &Seconds) -> cmp::Ordering {
self.partial_cmp(other).expect("Encountered NaN Seconds")
}
}
impl ops::Add for Seconds {
type Output = Seconds;
fn add(self, rhs: Seconds) -> Seconds {
Seconds(self.0 + rhs.0)
}
}
impl ops::Sub for Seconds {
type Output = Seconds;
fn sub(self, rhs: Seconds) -> Seconds {
Seconds(self.0 - rhs.0)
}
}
impl<RHS> ops::Mul<RHS> for Seconds
where
f32: ops::Mul<RHS, Output = f32>,
{
type Output = Seconds;
fn mul(self, rhs: RHS) -> Seconds {
Seconds(self.0.mul(rhs))
}
}
impl<RHS> ops::Div<RHS> for Seconds
where
f32: ops::Div<RHS, Output = f32>,
{
type Output = Seconds;
fn div(self, rhs: RHS) -> Seconds {
Seconds(self.0.div(rhs))
}
}
pub type Ticks = u64;
#[derive(Debug, Clone)]
pub enum Time {
Seconds(Seconds),
Ticks(Ticks),
}
impl From<Seconds> for Time {
fn from(s: Seconds) -> Time {
Time::Seconds(s)
}
}
impl From<Ticks> for Time {
fn from(t: Ticks) -> Time {
Time::Ticks(t)
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct BPM(pub f32);
impl Eq for BPM {}
impl PartialOrd for BPM {
fn partial_cmp(&self, other: &BPM) -> Option<cmp::Ordering> {
self.0.partial_cmp(&other.0)
}
}
impl Ord for BPM {
fn cmp(&self, other: &BPM) -> cmp::Ordering {
self.partial_cmp(other).expect("Encountered NaN BPM")
}
}
impl<RHS> ops::Mul<RHS> for BPM
where
f32: ops::Mul<RHS, Output = f32>,
{
type Output = BPM;
fn mul(self, rhs: RHS) -> BPM {
BPM(self.0.mul(rhs))
}
}
impl<RHS> ops::Div<RHS> for BPM
where
f32: ops::Div<RHS, Output = f32>,
{
type Output = BPM;
fn div(self, rhs: RHS) -> BPM {
BPM(self.0.div(rhs))
}
}
#[derive(Debug, Clone)]
pub struct Note {
pub time: Seconds,
pub dur: Seconds,
pub start_tick: Option<Ticks>,
pub dur_ticks: Option<Ticks>,
pub ampl: f32,
pub pitch: Pitch,
}
#[derive(Debug, Clone)]
pub struct Aux {
pub time: Seconds,
pub data: String,
}
pub type NoteStream = Vec<Note>;
pub type AuxStream = Vec<Aux>;
#[derive(Debug, Clone)]
pub enum Stream {
Note(NoteStream),
Aux(AuxStream),
}
impl Stream {
pub fn note_stream(&self) -> Option<&NoteStream> {
match self {
&Stream::Note(ref ns) => Some(ns),
_ => None,
}
}
}
pub type Group = Vec<NoteStream>;
#[derive(Debug, Clone, Copy)]
pub struct BPMEntry {
pub abstick: Ticks,
pub bpm: BPM,
pub realtime: Option<Seconds>,
}
#[derive(Debug, Clone)]
pub struct BPMTableInput {
pub entries: Vec<BPMEntry>,
pub resolution: f32,
}
impl From<BPMTableInput> for BPMTable {
fn from(input: BPMTableInput) -> BPMTable {
let mut range = input.entries.clone();
range.sort_unstable_by_key(|&ent| ent.abstick);
for ent in range.iter_mut() {
ent.realtime = Some(Seconds(0.0));
}
for idx in 1..(range.len() - 1) {
let tick = range[idx].abstick;
let BPMEntry {
abstick: ptick,
bpm: pbpm,
realtime: ptm,
} = range[idx - 1];
range[idx].realtime = Some(
ptm.unwrap()
+ Seconds((60.0 * ((tick - ptick) as f32)) / (pbpm * input.resolution).0),
);
}
BPMTable {
range: range,
resolution: input.resolution,
}
}
}
pub struct BPMTable {
range: Vec<BPMEntry>,
resolution: f32,
}
impl BPMTable {
pub fn to_seconds(&self, tm: Time) -> Seconds {
match tm {
Time::Seconds(s) => s,
Time::Ticks(t) => match self.range.binary_search_by_key(&t, |&ent| ent.abstick) {
Ok(idx) => self.range[idx].realtime.unwrap(),
Err(idx) => {
let effidx = cmp::max(0, idx - 1);
let BPMEntry {
abstick: tick,
bpm,
realtime: sec,
} = self.range[effidx];
sec.unwrap() + Seconds((60.0 * ((t - tick) as f32)) / (bpm * self.resolution).0)
}
},
}
}
pub fn to_seconds_time(&self, tm: Time) -> Time {
Time::Seconds(self.to_seconds(tm))
}
pub fn to_ticks(&self, tm: Time) -> Ticks {
match tm {
Time::Ticks(t) => t,
Time::Seconds(s) => match self
.range
.binary_search_by_key(&s, |&ent| ent.realtime.unwrap())
{
Ok(idx) => self.range[idx].abstick,
Err(idx) => {
let effidx = cmp::max(0, idx - 1);
let BPMEntry {
abstick: tick,
bpm,
realtime: sec,
} = self.range[effidx];
tick + ((((s - sec.unwrap()).0 * bpm.0 * self.resolution) / 60.0) as Ticks)
}
},
}
}
pub fn to_ticks_time(&self, tm: Time) -> Time {
Time::Ticks(self.to_ticks(tm))
}
}
#[derive(Default)]
pub struct IVMeta {
pub bpms: Option<BPMTable>,
pub args: Option<String>,
pub app: Option<String>,
}
#[derive(Default)]
pub struct IV {
pub default_group: Group,
pub groups: HashMap<String, Group>,
pub meta: IVMeta,
}
impl IV {
/* fn iter_streams(&self) -> impl Iterator<Item=&NoteStream> {
self.groups.values().chain(iter::once(&self.default_group)).flat_map(|x| x.iter())
} */
}
|
