unspeaker/tek
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i do not exist 2026-06-24 16:20:30 +03:00
parent c737c7d839
commit 3bbe52093e
11 changed files with 454 additions and 432 deletions
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57
src/app.rs
View file

@ -1,4 +1,5 @@
use crate::*;
pub mod audio; pub use self::audio::*;
pub mod bind; pub use self::bind::*;
pub mod cli; pub use self::cli::*;
pub mod config; pub use self::config::*;
@ -123,57 +124,6 @@ impl App {
})
}
pub fn jack_process (
&mut self, client: &Client, scope: &ProcessScope
) -> Control {
let t0 = self.perf.get_t0();
self.clock().update_from_scope(scope).unwrap();
let midi_in = self.project.midi_input_collect(scope);
if let Some(editor) = &self.editor() {
let mut pitch: Option<u7> = None;
for port in midi_in.iter() {
for event in port.iter() {
if let (_, Ok(LiveEvent::Midi {message: MidiMessage::NoteOn {key, ..}, ..}))
= event
{
pitch = Some(key.clone());
}
}
}
if let Some(pitch) = pitch {
editor.set_note_pos(pitch.as_int() as usize);
}
}
let result = self.project.process_tracks(client, scope);
self.perf.update_from_jack_scope(t0, scope);
result
}
pub fn jack_event (
&mut self, event: JackEvent
) {
use JackEvent::*;
match event {
SampleRate(sr) => { self.clock().timebase.sr.set(sr as f64); },
PortRegistration(_id, true) => {
//let port = self.jack().port_by_id(id);
//println!("\rport add: {id} {port:?}");
//println!("\rport add: {id}");
},
PortRegistration(_id, false) => {
/*println!("\rport del: {id}")*/
},
PortsConnected(_a, _b, true) => { /*println!("\rport conn: {a} {b}")*/ },
PortsConnected(_a, _b, false) => { /*println!("\rport disc: {a} {b}")*/ },
ClientRegistration(_id, true) => {},
ClientRegistration(_id, false) => {},
ThreadInit => {},
XRun => {},
GraphReorder => {},
_ => { panic!("{event:?}"); }
}
}
/// Update memoized render of clock values.
/// ```
/// tek::App::default().update_clock();
@ -389,8 +339,6 @@ impl_as_mut_opt!(MidiEditor: |self: App|self.project.as_mut_opt());
impl_has_clips!( |self: App|self.pool.clips);
impl_audio!(App: tek_jack_process, tek_jack_event);
namespace!(App: Arc<str> { literal = |dsl|Ok(dsl.src()?.map(|x|x.into())); });
namespace!(App: u8 { literal = |dsl|try_to_u8(dsl); });
@ -564,13 +512,14 @@ fn app_interpret_word (state: &App, to: &mut Tui, dsl: &impl Expression) -> Usua
})))
}.draw(to),
Some(":sessions") => h_exact(Some(6), w_min(30, thunk(|to: &mut Tui|{
Some(":sessions") => h_exact(Some(6), w_min(Some(30), thunk(|to: &mut Tui|{
let fg = Rgb(224, 192, 128);
for (index, name) in ["session1", "session2", "session3"].iter().enumerate() {
let bg = if index == 0 { Rgb(50,50,50) } else { Rgb(40,40,40) };
y_push((2 * index) as u16,
&h_exact(2, w_full(bg(bg, origin_w(fg(fg, name)))))).draw(to);
}
Ok(())
}))).draw(to),
Some(":browse/title") => w_full(origin_w(field_v(ItemColor::default(),

50
src/app/audio.rs Normal file
View file

@ -0,0 +1,50 @@
use crate::*;
impl_audio!(App: tek_jack_process, tek_jack_event);
fn tek_jack_process (state: &mut App, client: &Client, scope: &ProcessScope) -> Control {
let t0 = state.perf.get_t0();
state.clock().update_from_scope(scope).unwrap();
let midi_in = state.project.midi_input_collect(scope);
if let Some(editor) = &state.editor() {
let mut pitch: Option<u7> = None;
for port in midi_in.iter() {
for event in port.iter() {
if let (_, Ok(LiveEvent::Midi {message: MidiMessage::NoteOn {key, ..}, ..}))
= event
{
pitch = Some(key.clone());
}
}
}
if let Some(pitch) = pitch {
editor.set_note_pos(pitch.as_int() as usize);
}
}
let result = state.project.process_tracks(client, scope);
state.perf.update_from_jack_scope(t0, scope);
result
}
fn tek_jack_event (state: &mut App, event: JackEvent) {
use JackEvent::*;
match event {
SampleRate(sr) => { state.clock().timebase.sr.set(sr as f64); },
PortRegistration(_id, true) => {
//let port = self.jack().port_by_id(id);
//println!("\rport add: {id} {port:?}");
//println!("\rport add: {id}");
},
PortRegistration(_id, false) => {
/*println!("\rport del: {id}")*/
},
PortsConnected(_a, _b, true) => { /*println!("\rport conn: {a} {b}")*/ },
PortsConnected(_a, _b, false) => { /*println!("\rport disc: {a} {b}")*/ },
ClientRegistration(_id, true) => {},
ClientRegistration(_id, false) => {},
ThreadInit => {},
XRun => {},
GraphReorder => {},
_ => { panic!("{event:?}"); }
}
}

2
src/device.rs
View file

@ -109,7 +109,7 @@ pub mod menu; pub use self::menu::*;
pub mod meter; pub use self::meter::*;
pub mod mix; pub use self::mix::*;
pub mod port; pub use self::port::*;
pub mod sample; pub use self::sample::*;
pub mod sampler; pub use self::sampler::*;
pub mod sequence; pub use self::sequence::*;
#[cfg(feature = "plugin")] pub mod plugin;

6
src/device/browse.rs
View file

@ -1,4 +1,4 @@
use crate::{*, clock::*, sequence::*, sample::*};
use crate::{*, clock::*, sequence::*, sampler::*};
def_command!(FileBrowserCommand: |sampler: Sampler|{
//("begin" [] Some(Self::Begin))
@ -261,6 +261,7 @@ impl<'a> PoolView<'a> {
}))))
}
}
impl ClipLength {
fn tui (&self) -> impl Draw<Tui> {
use ClipLengthFocus::*;
@ -311,6 +312,7 @@ impl Browse {
fn _todo_stub_usize (&self) -> usize { todo!() }
fn _todo_stub_arc_str (&self) -> Arc<str> { todo!() }
}
impl Browse {
fn tui (&self) -> impl Draw<Tui> {
let item = |entry, _index|w_full(origin_w(entry));
@ -324,6 +326,7 @@ impl Browse {
iter_south_fixed(1, iterate, item)
}
}
impl<'a> Iterator for EntriesIterator<'a, Tui> {
type Item = impl Draw<Tui>;
fn next (&mut self) -> Option<Self::Item> {
@ -341,6 +344,7 @@ impl<'a> Iterator for EntriesIterator<'a, Tui> {
}
}
}
impl PartialEq for BrowseTarget {
fn eq (&self, other: &Self) -> bool {
match self {

7
src/device/editor.rs
View file

@ -16,14 +16,15 @@ use crate::*;
/// let _ = editor.edit_status();
/// ```
pub struct MidiEditor {
/// Size of editor on screen
pub size: Size,
/// View mode and state of editor
pub mode: PianoHorizontal,
/// Size of editor on screen
pub size: Size,
}
impl_default!(MidiEditor: Self {
size: [0, 0].into(), mode: PianoHorizontal::new(None)
mode: PianoHorizontal::new(None),
size: Size(0.into(), 0.into()),
});
impl MidiEditor {

6
src/device/editor/piano.rs
View file

@ -32,10 +32,10 @@ impl Draw<Tui> for PianoHorizontal {
impl PianoHorizontal {
pub fn new (clip: Option<&Arc<RwLock<MidiClip>>>) -> Self {
let size: Size = [0, 0].into();
let size = Size::default();
let mut range = MidiSelection::from((12, true));
range.time_axis = size.x.clone();
range.note_axis = size.y.clone();
range.time_axis = size.0.clone();
range.note_axis = size.1.clone();
let piano = Self {
keys_width: 5,
size,

433
src/device/sample.rs → src/device/sampler.rs
View file

@ -1,51 +1,9 @@
use crate::{*, device::*, browse::*, mix::*};
def_command!(SamplerCommand: |sampler: Sampler| {
RecordToggle { slot: usize } => {
let slot = *slot;
let recording = sampler.recording.as_ref().map(|x|x.0);
let _ = Self::RecordFinish.act(sampler)?;
// autoslice: continue recording at next slot
if recording != Some(slot) {
Self::RecordBegin { slot }.act(sampler)
} else {
Ok(None)
}
},
RecordBegin { slot: usize } => {
let slot = *slot;
sampler.recording = Some((
slot,
Some(Arc::new(RwLock::new(Sample::new(
"Sample", 0, 0, vec![vec![];sampler.audio_ins.len()]
))))
));
Ok(None)
},
RecordFinish => {
let _prev_sample = sampler.recording.as_mut().map(|(index, sample)|{
std::mem::swap(sample, &mut sampler.samples.0[*index]);
sample
}); // TODO: undo
Ok(None)
},
RecordCancel => {
sampler.recording = None;
Ok(None)
},
PlaySample { slot: usize } => {
let slot = *slot;
if let Some(ref sample) = sampler.samples.0[slot] {
sampler.voices.write().unwrap().push(Sample::play(sample, 0, &u7::from(128)));
}
Ok(None)
},
StopSample { slot: usize } => {
let _slot = *slot;
todo!();
//Ok(None)
},
});
mod voice; pub use self::voice::*;
mod sample; pub use self::sample::*;
mod sample_add; pub use self::sample_add::*;
mod sample_kit; pub use self::sample_kit::*;
/// Plays [Voice]s from [Sample]s.
///
@ -97,51 +55,17 @@ def_command!(SamplerCommand: |sampler: Sampler| {
#[cfg(feature = "meter")] pub output_meters: Vec<f32>,
}
/// Collection of samples, one per slot, fixed number of slots.
///
/// History: Separated to cleanly implement [Default].
///
/// ```
/// let samples = tek::SampleKit([None, None, None, None]);
/// ```
#[derive(Debug)] pub struct SampleKit<const N: usize>(
pub [Option<Arc<RwLock<Sample>>>;N]
);
impl_audio!(Sampler: sampler_jack_process);
/// A sound cut.
///
/// ```
/// let sample = tek::Sample::default();
/// let sample = tek::Sample::new("test", 0, 0, vec![]);
/// ```
#[derive(Default, Debug)] pub struct Sample {
pub name: Arc<str>,
pub start: usize,
pub end: usize,
pub channels: Vec<Vec<f32>>,
pub rate: Option<usize>,
pub gain: f32,
pub color: ItemTheme,
}
/// A currently playing instance of a sample.
#[derive(Default, Debug, Clone)] pub struct Voice {
pub sample: Arc<RwLock<Sample>>,
pub after: usize,
pub position: usize,
pub velocity: f32,
}
#[derive(Default, Debug)] pub struct SampleAdd {
pub exited: bool,
pub dir: PathBuf,
pub subdirs: Vec<OsString>,
pub files: Vec<OsString>,
pub cursor: usize,
pub offset: usize,
pub sample: Arc<RwLock<Sample>>,
pub voices: Arc<RwLock<Vec<Voice>>>,
pub _search: Option<String>,
pub(crate) fn sampler_jack_process (state: &mut Sampler, _: &Client, scope: &ProcessScope) -> Control {
if let Some(midi_in) = &state.midi_in {
for midi in midi_in.port().iter(scope) {
sampler_midi_in(&state.samples, &state.voices, midi)
}
}
state.process_audio_out(scope);
state.process_audio_in(scope);
Control::Continue
}
#[derive(Debug)] pub enum SamplerMode {
@ -152,28 +76,6 @@ def_command!(SamplerCommand: |sampler: Sampler| {
pub type MidiSample =
(Option<u7>, Arc<RwLock<crate::Sample>>);
impl<const N: usize> Default for SampleKit<N> {
fn default () -> Self { Self([const { None }; N]) }
}
impl Iterator for Voice {
type Item = [f32;2];
fn next (&mut self) -> Option<Self::Item> {
if self.after > 0 {
self.after -= 1;
return Some([0.0, 0.0])
}
let sample = self.sample.read().unwrap();
if self.position < sample.end {
let position = self.position;
self.position += 1;
return sample.channels[0].get(position).map(|_amplitude|[
sample.channels[0][position] * self.velocity * sample.gain,
sample.channels[0][position] * self.velocity * sample.gain,
])
}
None
}
}
impl NoteRange for Sampler {
fn note_lo (&self) -> &AtomicUsize {
&self.note_lo
@ -182,6 +84,7 @@ impl NoteRange for Sampler {
&self.size.y
}
}
impl NotePoint for Sampler {
fn note_len (&self) -> &AtomicUsize {
unreachable!();
@ -205,6 +108,7 @@ impl NotePoint for Sampler {
old
}
}
impl Sampler {
pub fn new (
jack: &Jack<'static>,
@ -331,252 +235,6 @@ impl Sampler {
}
}
}
impl SampleAdd {
fn exited (&self) -> bool {
self.exited
}
fn exit (&mut self) {
self.exited = true
}
pub fn new (
sample: &Arc<RwLock<Sample>>,
voices: &Arc<RwLock<Vec<Voice>>>
) -> Usually<Self> {
let dir = std::env::current_dir()?;
let (subdirs, files) = scan(&dir)?;
Ok(Self {
exited: false,
dir,
subdirs,
files,
cursor: 0,
offset: 0,
sample: sample.clone(),
voices: voices.clone(),
_search: None
})
}
fn rescan (&mut self) -> Usually<()> {
scan(&self.dir).map(|(subdirs, files)|{
self.subdirs = subdirs;
self.files = files;
})
}
fn prev (&mut self) {
self.cursor = self.cursor.saturating_sub(1);
}
fn next (&mut self) {
self.cursor = self.cursor + 1;
}
fn try_preview (&mut self) -> Usually<()> {
if let Some(path) = self.cursor_file() {
if let Ok(sample) = Sample::from_file(&path) {
*self.sample.write().unwrap() = sample;
self.voices.write().unwrap().push(
Sample::play(&self.sample, 0, &u7::from(100u8))
);
}
//load_sample(&path)?;
//let src = std::fs::File::open(&path)?;
//let mss = MediaSourceStream::new(Box::new(src), Default::default());
//let mut hint = Hint::new();
//if let Some(ext) = path.extension() {
//hint.with_extension(&ext.to_string_lossy());
//}
//let meta_opts: MetadataOptions = Default::default();
//let fmt_opts: FormatOptions = Default::default();
//if let Ok(mut probed) = symphonia::default::get_probe()
//.format(&hint, mss, &fmt_opts, &meta_opts)
//{
//panic!("{:?}", probed.format.metadata());
//};
}
Ok(())
}
fn cursor_dir (&self) -> Option<PathBuf> {
if self.cursor < self.subdirs.len() {
Some(self.dir.join(&self.subdirs[self.cursor]))
} else {
None
}
}
fn cursor_file (&self) -> Option<PathBuf> {
if self.cursor < self.subdirs.len() {
return None
}
let index = self.cursor.saturating_sub(self.subdirs.len());
if index < self.files.len() {
Some(self.dir.join(&self.files[index]))
} else {
None
}
}
fn pick (&mut self) -> Usually<bool> {
if self.cursor == 0 {
if let Some(parent) = self.dir.parent() {
self.dir = parent.into();
self.rescan()?;
self.cursor = 0;
return Ok(false)
}
}
if let Some(dir) = self.cursor_dir() {
self.dir = dir;
self.rescan()?;
self.cursor = 0;
return Ok(false)
}
if let Some(path) = self.cursor_file() {
let (end, channels) = read_sample_data(&path.to_string_lossy())?;
let mut sample = self.sample.write().unwrap();
sample.name = path.file_name().unwrap().to_string_lossy().into();
sample.end = end;
sample.channels = channels;
return Ok(true)
}
return Ok(false)
}
}
impl<const N: usize> SampleKit<N> {
pub fn get (&self, index: usize) -> &Option<Arc<RwLock<Sample>>> {
if index < self.0.len() {
&self.0[index]
} else {
&None
}
}
}
impl Sample {
pub fn new (name: impl AsRef<str>, start: usize, end: usize, channels: Vec<Vec<f32>>) -> Self {
Self {
name: name.as_ref().into(),
start,
end,
channels,
rate: None,
gain: 1.0,
color: ItemTheme::random(),
}
}
pub fn play (sample: &Arc<RwLock<Self>>, after: usize, velocity: &u7) -> Voice {
Voice {
sample: sample.clone(),
after,
position: sample.read().unwrap().start,
velocity: velocity.as_int() as f32 / 127.0,
}
}
pub fn handle_cc (&mut self, controller: u7, value: u7) {
let percentage = value.as_int() as f64 / 127.;
match controller.as_int() {
20 => {
self.start = (percentage * self.end as f64) as usize;
},
21 => {
let length = self.channels[0].len();
self.end = length.min(
self.start + (percentage * (length as f64 - self.start as f64)) as usize
);
},
22 => { /*attack*/ },
23 => { /*decay*/ },
24 => {
self.gain = percentage as f32 * 2.0;
},
26 => { /* pan */ }
25 => { /* pitch */ }
_ => {}
}
}
/// Read WAV from file
pub fn read_data (src: &str) -> Usually<(usize, Vec<Vec<f32>>)> {
let mut channels: Vec<wavers::Samples<f32>> = vec![];
for channel in wavers::Wav::from_path(src)?.channels() {
channels.push(channel);
}
let mut end = 0;
let mut data: Vec<Vec<f32>> = vec![];
for samples in channels.iter() {
let channel = Vec::from(samples.as_ref());
end = end.max(channel.len());
data.push(channel);
}
Ok((end, data))
}
pub fn from_file (path: &PathBuf) -> Usually<Self> {
let name = path.file_name().unwrap().to_string_lossy().into();
let mut sample = Self { name, ..Default::default() };
// Use file extension if present
let mut hint = Hint::new();
if let Some(ext) = path.extension() {
hint.with_extension(&ext.to_string_lossy());
}
let probed = symphonia::default::get_probe().format(
&hint,
MediaSourceStream::new(
Box::new(File::open(path)?),
Default::default(),
),
&Default::default(),
&Default::default()
)?;
let mut format = probed.format;
let params = &format.tracks().iter()
.find(|t| t.codec_params.codec != CODEC_TYPE_NULL)
.expect("no tracks found")
.codec_params;
let mut decoder = get_codecs().make(params, &Default::default())?;
loop {
match format.next_packet() {
Ok(packet) => sample.decode_packet(&mut decoder, packet)?,
Err(symphonia::core::errors::Error::IoError(_)) => break decoder.last_decoded(),
Err(err) => return Err(err.into()),
};
};
sample.end = sample.channels.iter().fold(0, |l, c|l + c.len());
Ok(sample)
}
fn decode_packet (
&mut self, decoder: &mut Box<dyn Decoder>, packet: Packet
) -> Usually<()> {
// Decode a packet
let decoded = decoder
.decode(&packet)
.map_err(|e|Box::<dyn std::error::Error>::from(e))?;
// Determine sample rate
let spec = *decoded.spec();
if let Some(rate) = self.rate {
if rate != spec.rate as usize {
panic!("sample rate changed");
}
} else {
self.rate = Some(spec.rate as usize);
}
// Determine channel count
while self.channels.len() < spec.channels.count() {
self.channels.push(vec![]);
}
// Load sample
let mut samples = SampleBuffer::new(
decoded.frames() as u64,
spec
);
if samples.capacity() > 0 {
samples.copy_interleaved_ref(decoded);
for frame in samples.samples().chunks(spec.channels.count()) {
for (chan, frame) in frame.iter().enumerate() {
self.channels[chan].push(*frame)
}
}
}
Ok(())
}
}
impl Draw<Tui> for SampleAdd {
fn draw (self, _to: &mut Tui) -> Usually<XYWH<u16>> {
todo!()
}
}
fn draw_list_item (sample: &Option<Arc<RwLock<Sample>>>) -> String {
if let Some(sample) = sample {
@ -652,18 +310,6 @@ fn draw_viewer (sample: Option<&Arc<RwLock<Sample>>>) -> impl Draw<Tui> + use<'_
})
}
impl_audio!(Sampler: sampler_jack_process);
pub(crate) fn sampler_jack_process (state: &mut Sampler, _: &Client, scope: &ProcessScope) -> Control {
if let Some(midi_in) = &state.midi_in {
for midi in midi_in.port().iter(scope) {
sampler_midi_in(&state.samples, &state.voices, midi)
}
}
state.process_audio_out(scope);
state.process_audio_in(scope);
Control::Continue
}
/// Create [Voice]s from [Sample]s in response to MIDI input.
fn sampler_midi_in (
samples: &SampleKit<128>, voices: &Arc<RwLock<Vec<Voice>>>, RawMidi { time, bytes }: RawMidi
@ -704,3 +350,50 @@ fn draw_sample (
fn read_sample_data (_: &str) -> Usually<(usize, Vec<Vec<f32>>)> {
todo!();
}
def_command!(SamplerCommand: |sampler: Sampler| {
RecordToggle { slot: usize } => {
let slot = *slot;
let recording = sampler.recording.as_ref().map(|x|x.0);
let _ = Self::RecordFinish.act(sampler)?;
// autoslice: continue recording at next slot
if recording != Some(slot) {
Self::RecordBegin { slot }.act(sampler)
} else {
Ok(None)
}
},
RecordBegin { slot: usize } => {
let slot = *slot;
sampler.recording = Some((
slot,
Some(Arc::new(RwLock::new(Sample::new(
"Sample", 0, 0, vec![vec![];sampler.audio_ins.len()]
))))
));
Ok(None)
},
RecordFinish => {
let _prev_sample = sampler.recording.as_mut().map(|(index, sample)|{
std::mem::swap(sample, &mut sampler.samples.0[*index]);
sample
}); // TODO: undo
Ok(None)
},
RecordCancel => {
sampler.recording = None;
Ok(None)
},
PlaySample { slot: usize } => {
let slot = *slot;
if let Some(ref sample) = sampler.samples.0[slot] {
sampler.voices.write().unwrap().push(Sample::play(sample, 0, &u7::from(128)));
}
Ok(None)
},
StopSample { slot: usize } => {
let _slot = *slot;
todo!();
//Ok(None)
},
});

144
src/device/sampler/sample.rs Normal file
View file

@ -0,0 +1,144 @@
use crate::*;
/// A sound cut.
///
/// ```
/// let sample = tek::Sample::default();
/// let sample = tek::Sample::new("test", 0, 0, vec![]);
/// ```
#[derive(Default, Debug)] pub struct Sample {
pub name: Arc<str>,
pub start: usize,
pub end: usize,
pub channels: Vec<Vec<f32>>,
pub rate: Option<usize>,
pub gain: f32,
pub color: ItemTheme,
}
impl Sample {
pub fn new (name: impl AsRef<str>, start: usize, end: usize, channels: Vec<Vec<f32>>) -> Self {
Self {
name: name.as_ref().into(),
start,
end,
channels,
rate: None,
gain: 1.0,
color: ItemTheme::random(),
}
}
pub fn play (sample: &Arc<RwLock<Self>>, after: usize, velocity: &u7) -> Voice {
Voice {
sample: sample.clone(),
after,
position: sample.read().unwrap().start,
velocity: velocity.as_int() as f32 / 127.0,
}
}
pub fn handle_cc (&mut self, controller: u7, value: u7) {
let percentage = value.as_int() as f64 / 127.;
match controller.as_int() {
20 => {
self.start = (percentage * self.end as f64) as usize;
},
21 => {
let length = self.channels[0].len();
self.end = length.min(
self.start + (percentage * (length as f64 - self.start as f64)) as usize
);
},
22 => { /*attack*/ },
23 => { /*decay*/ },
24 => {
self.gain = percentage as f32 * 2.0;
},
26 => { /* pan */ }
25 => { /* pitch */ }
_ => {}
}
}
/// Read WAV from file
pub fn read_data (src: &str) -> Usually<(usize, Vec<Vec<f32>>)> {
let mut channels: Vec<wavers::Samples<f32>> = vec![];
for channel in wavers::Wav::from_path(src)?.channels() {
channels.push(channel);
}
let mut end = 0;
let mut data: Vec<Vec<f32>> = vec![];
for samples in channels.iter() {
let channel = Vec::from(samples.as_ref());
end = end.max(channel.len());
data.push(channel);
}
Ok((end, data))
}
pub fn from_file (path: &PathBuf) -> Usually<Self> {
let name = path.file_name().unwrap().to_string_lossy().into();
let mut sample = Self { name, ..Default::default() };
// Use file extension if present
let mut hint = Hint::new();
if let Some(ext) = path.extension() {
hint.with_extension(&ext.to_string_lossy());
}
let probed = symphonia::default::get_probe().format(
&hint,
MediaSourceStream::new(
Box::new(File::open(path)?),
Default::default(),
),
&Default::default(),
&Default::default()
)?;
let mut format = probed.format;
let params = &format.tracks().iter()
.find(|t| t.codec_params.codec != CODEC_TYPE_NULL)
.expect("no tracks found")
.codec_params;
let mut decoder = get_codecs().make(params, &Default::default())?;
loop {
match format.next_packet() {
Ok(packet) => sample.decode_packet(&mut decoder, packet)?,
Err(symphonia::core::errors::Error::IoError(_)) => break decoder.last_decoded(),
Err(err) => return Err(err.into()),
};
};
sample.end = sample.channels.iter().fold(0, |l, c|l + c.len());
Ok(sample)
}
fn decode_packet (
&mut self, decoder: &mut Box<dyn Decoder>, packet: Packet
) -> Usually<()> {
// Decode a packet
let decoded = decoder
.decode(&packet)
.map_err(|e|Box::<dyn std::error::Error>::from(e))?;
// Determine sample rate
let spec = *decoded.spec();
if let Some(rate) = self.rate {
if rate != spec.rate as usize {
panic!("sample rate changed");
}
} else {
self.rate = Some(spec.rate as usize);
}
// Determine channel count
while self.channels.len() < spec.channels.count() {
self.channels.push(vec![]);
}
// Load sample
let mut samples = SampleBuffer::new(
decoded.frames() as u64,
spec
);
if samples.capacity() > 0 {
samples.copy_interleaved_ref(decoded);
for frame in samples.samples().chunks(spec.channels.count()) {
for (chan, frame) in frame.iter().enumerate() {
self.channels[chan].push(*frame)
}
}
}
Ok(())
}
}

126
src/device/sampler/sample_add.rs Normal file
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@ -0,0 +1,126 @@
use crate::{*, device::sampler::*};
#[derive(Default, Debug)] pub struct SampleAdd {
pub exited: bool,
pub dir: PathBuf,
pub subdirs: Vec<OsString>,
pub files: Vec<OsString>,
pub cursor: usize,
pub offset: usize,
pub sample: Arc<RwLock<Sample>>,
pub voices: Arc<RwLock<Vec<Voice>>>,
pub _search: Option<String>,
}
impl SampleAdd {
fn exited (&self) -> bool {
self.exited
}
fn exit (&mut self) {
self.exited = true
}
pub fn new (
sample: &Arc<RwLock<Sample>>,
voices: &Arc<RwLock<Vec<Voice>>>
) -> Usually<Self> {
let dir = std::env::current_dir()?;
let (subdirs, files) = scan(&dir)?;
Ok(Self {
exited: false,
dir,
subdirs,
files,
cursor: 0,
offset: 0,
sample: sample.clone(),
voices: voices.clone(),
_search: None
})
}
fn rescan (&mut self) -> Usually<()> {
scan(&self.dir).map(|(subdirs, files)|{
self.subdirs = subdirs;
self.files = files;
})
}
fn prev (&mut self) {
self.cursor = self.cursor.saturating_sub(1);
}
fn next (&mut self) {
self.cursor = self.cursor + 1;
}
fn try_preview (&mut self) -> Usually<()> {
if let Some(path) = self.cursor_file() {
if let Ok(sample) = Sample::from_file(&path) {
*self.sample.write().unwrap() = sample;
self.voices.write().unwrap().push(
Sample::play(&self.sample, 0, &u7::from(100u8))
);
}
//load_sample(&path)?;
//let src = std::fs::File::open(&path)?;
//let mss = MediaSourceStream::new(Box::new(src), Default::default());
//let mut hint = Hint::new();
//if let Some(ext) = path.extension() {
//hint.with_extension(&ext.to_string_lossy());
//}
//let meta_opts: MetadataOptions = Default::default();
//let fmt_opts: FormatOptions = Default::default();
//if let Ok(mut probed) = symphonia::default::get_probe()
//.format(&hint, mss, &fmt_opts, &meta_opts)
//{
//panic!("{:?}", probed.format.metadata());
//};
}
Ok(())
}
fn cursor_dir (&self) -> Option<PathBuf> {
if self.cursor < self.subdirs.len() {
Some(self.dir.join(&self.subdirs[self.cursor]))
} else {
None
}
}
fn cursor_file (&self) -> Option<PathBuf> {
if self.cursor < self.subdirs.len() {
return None
}
let index = self.cursor.saturating_sub(self.subdirs.len());
if index < self.files.len() {
Some(self.dir.join(&self.files[index]))
} else {
None
}
}
fn pick (&mut self) -> Usually<bool> {
if self.cursor == 0 {
if let Some(parent) = self.dir.parent() {
self.dir = parent.into();
self.rescan()?;
self.cursor = 0;
return Ok(false)
}
}
if let Some(dir) = self.cursor_dir() {
self.dir = dir;
self.rescan()?;
self.cursor = 0;
return Ok(false)
}
if let Some(path) = self.cursor_file() {
let (end, channels) = read_sample_data(&path.to_string_lossy())?;
let mut sample = self.sample.write().unwrap();
sample.name = path.file_name().unwrap().to_string_lossy().into();
sample.end = end;
sample.channels = channels;
return Ok(true)
}
return Ok(false)
}
}
impl Draw<Tui> for SampleAdd {
fn draw (self, _to: &mut Tui) -> Usually<XYWH<u16>> {
todo!()
}
}

26
src/device/sampler/sample_kit.rs Normal file
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use crate::*;
/// Collection of samples, one per slot, fixed number of slots.
///
/// History: Separated to cleanly implement [Default].
///
/// ```
/// let samples = tek::SampleKit([None, None, None, None]);
/// ```
#[derive(Debug)] pub struct SampleKit <const N: usize> (
pub [Option<Arc<RwLock<Sample>>>;N]
);
impl<const N: usize> Default for SampleKit<N> {
fn default () -> Self { Self([const { None }; N]) }
}
impl<const N: usize> SampleKit<N> {
pub fn get (&self, index: usize) -> &Option<Arc<RwLock<Sample>>> {
if index < self.0.len() {
&self.0[index]
} else {
&None
}
}
}

29
src/device/sampler/voice.rs Normal file
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use crate::*;
/// A currently playing instance of a sample.
#[derive(Default, Debug, Clone)] pub struct Voice {
pub sample: Arc<RwLock<Sample>>,
pub after: usize,
pub position: usize,
pub velocity: f32,
}
impl Iterator for Voice {
type Item = [f32;2];
fn next (&mut self) -> Option<Self::Item> {
if self.after > 0 {
self.after -= 1;
return Some([0.0, 0.0])
}
let sample = self.sample.read().unwrap();
if self.position < sample.end {
let position = self.position;
self.position += 1;
return sample.channels[0].get(position).map(|_amplitude|[
sample.channels[0][position] * self.velocity * sample.gain,
sample.channels[0][position] * self.velocity * sample.gain,
])
}
None
}
}