flatten workspace into 1 crate

src/plugin.rs

@@ -0,0 +1,266 @@
+use crate::*;
+
+pub mod lv2; pub(crate) use lv2::*;
+pub use self::lv2::LV2Plugin;
+
+/// A plugin device.
+#[derive(Debug)]
+pub struct Plugin {
+    /// JACK client handle (needs to not be dropped for standalone mode to work).
+    pub jack:       Arc<RwLock<JackClient>>,
+    pub name:       String,
+    pub path:       Option<String>,
+    pub plugin:     Option<PluginKind>,
+    pub selected:   usize,
+    pub mapping:    bool,
+    pub midi_ins:   Vec<Port<MidiIn>>,
+    pub midi_outs:  Vec<Port<MidiOut>>,
+    pub audio_ins:  Vec<Port<AudioIn>>,
+    pub audio_outs: Vec<Port<AudioOut>>,
+}
+
+/// Supported plugin formats.
+#[derive(Default)]
+pub enum PluginKind {
+    #[default] None,
+    LV2(LV2Plugin),
+    VST2 { instance: () /*::vst::host::PluginInstance*/ },
+    VST3,
+}
+
+impl Debug for PluginKind {
+    fn fmt (&self, f: &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
+        write!(f, "{}", match self {
+            Self::None     => "(none)",
+            Self::LV2(_)   => "LV2",
+            Self::VST2{..} => "VST2",
+            Self::VST3     => "VST3",
+        })
+    }
+}
+impl Plugin {
+    pub fn new_lv2 (
+        jack: &Arc<RwLock<JackClient>>,
+        name: &str,
+        path: &str,
+    ) -> Usually<Self> {
+        Ok(Self {
+            jack:       jack.clone(),
+            name:       name.into(),
+            path:       Some(String::from(path)),
+            plugin:     Some(PluginKind::LV2(LV2Plugin::new(path)?)),
+            selected:   0,
+            mapping:    false,
+            midi_ins:   vec![],
+            midi_outs:  vec![],
+            audio_ins:  vec![],
+            audio_outs: vec![],
+        })
+    }
+}
+
+pub struct PluginAudio(Arc<RwLock<Plugin>>);
+from!(|model: &Arc<RwLock<Plugin>>| PluginAudio = Self(model.clone()));
+audio!(|self: PluginAudio, client, scope|{
+    let state = &mut*self.0.write().unwrap();
+    match state.plugin.as_mut() {
+        Some(PluginKind::LV2(LV2Plugin {
+            features,
+            ref mut instance,
+            ref mut input_buffer,
+            ..
+        })) => {
+            let urid = features.midi_urid();
+            input_buffer.clear();
+            for port in state.midi_ins.iter() {
+                let mut atom = ::livi::event::LV2AtomSequence::new(
+                    &features,
+                    scope.n_frames() as usize
+                );
+                for event in port.iter(scope) {
+                    match event.bytes.len() {
+                        3 => atom.push_midi_event::<3>(
+                            event.time as i64,
+                            urid,
+                            &event.bytes[0..3]
+                        ).unwrap(),
+                        _ => {}
+                    }
+                }
+                input_buffer.push(atom);
+            }
+            let mut outputs = vec![];
+            for _ in state.midi_outs.iter() {
+                outputs.push(::livi::event::LV2AtomSequence::new(
+                    features,
+                    scope.n_frames() as usize
+                ));
+            }
+            let ports = ::livi::EmptyPortConnections::new()
+                .with_atom_sequence_inputs(input_buffer.iter())
+                .with_atom_sequence_outputs(outputs.iter_mut())
+                .with_audio_inputs(state.audio_ins.iter().map(|o|o.as_slice(scope)))
+                .with_audio_outputs(state.audio_outs.iter_mut().map(|o|o.as_mut_slice(scope)));
+            unsafe {
+                instance.run(scope.n_frames() as usize, ports).unwrap()
+            };
+        },
+        _ => todo!("only lv2 is supported")
+    }
+    Control::Continue
+});
+
+    //fn jack_from_lv2 (name: &str, plugin: &::livi::Plugin) -> Usually<Jack> {
+        //let counts = plugin.port_counts();
+        //let mut jack = Jack::new(name)?;
+        //for i in 0..counts.atom_sequence_inputs {
+            //jack = jack.midi_in(&format!("midi-in-{i}"))
+        //}
+        //for i in 0..counts.atom_sequence_outputs {
+            //jack = jack.midi_out(&format!("midi-out-{i}"));
+        //}
+        //for i in 0..counts.audio_inputs {
+            //jack = jack.audio_in(&format!("audio-in-{i}"));
+        //}
+        //for i in 0..counts.audio_outputs {
+            //jack = jack.audio_out(&format!("audio-out-{i}"));
+        //}
+        //Ok(jack)
+    //}
+
+impl Plugin {
+    /// Create a plugin host device.
+    pub fn new (
+        jack: &Arc<RwLock<JackClient>>,
+        name: &str,
+    ) -> Usually<Self> {
+        Ok(Self {
+            //_engine:    Default::default(),
+            jack:       jack.clone(),
+            name:       name.into(),
+            path:       None,
+            plugin:     None,
+            selected:   0,
+            mapping:    false,
+            audio_ins:  vec![],
+            audio_outs: vec![],
+            midi_ins:   vec![],
+            midi_outs:  vec![],
+            //ports:      JackPorts::default()
+        })
+    }
+}
+impl Render<Tui> for Plugin {
+    fn min_size (&self, to: [u16;2]) -> Perhaps<[u16;2]> {
+        Ok(Some(to))
+    }
+    fn render (&self, to: &mut TuiOutput) -> Usually<()> {
+        let area = to.area();
+        let [x, y, _, height] = area;
+        let mut width = 20u16;
+        match &self.plugin {
+            Some(PluginKind::LV2(LV2Plugin { port_list, instance, .. })) => {
+                let start = self.selected.saturating_sub((height as usize / 2).saturating_sub(1));
+                let end   = start + height as usize - 2;
+                //draw_box(buf, Rect { x, y, width, height });
+                for i in start..end {
+                    if let Some(port) = port_list.get(i) {
+                        let value = if let Some(value) = instance.control_input(port.index) {
+                            value
+                        } else {
+                            port.default_value
+                        };
+                        //let label = &format!("C·· M·· {:25} = {value:.03}", port.name);
+                        let label = &format!("{:25} = {value:.03}", port.name);
+                        width = width.max(label.len() as u16 + 4);
+                        let style = if i == self.selected {
+                            Some(Style::default().green())
+                        } else {
+                            None
+                        } ;
+                        to.blit(&label, x + 2, y + 1 + i as u16 - start as u16, style);
+                    } else {
+                        break
+                    }
+                }
+            },
+            _ => {}
+        };
+        draw_header(self, to, x, y, width)?;
+        Ok(())
+    }
+}
+
+fn draw_header (state: &Plugin, to: &mut TuiOutput, x: u16, y: u16, w: u16) -> Usually<()> {
+    let style  = Style::default().gray();
+    let label1 = format!(" {}", state.name);
+    to.blit(&label1, x + 1, y, Some(style.white().bold()));
+    if let Some(ref path) = state.path {
+        let label2 = format!("{}…", &path[..((w as usize - 10).min(path.len()))]);
+        to.blit(&label2, x + 2 + label1.len() as u16, y, Some(style.not_dim()));
+    }
+    Ok(())
+    //Ok(Rect { x, y, width: w, height: 1 })
+}
+
+handle!(<Tui>|self:Plugin, from|{
+    match from.event() {
+        key_pat!(KeyCode::Up) => {
+            self.selected = self.selected.saturating_sub(1);
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::Down) => {
+            self.selected = (self.selected + 1).min(match &self.plugin {
+                Some(PluginKind::LV2(LV2Plugin { port_list, .. })) => port_list.len() - 1,
+                _ => unimplemented!()
+            });
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::PageUp) => {
+            self.selected = self.selected.saturating_sub(8);
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::PageDown) => {
+            self.selected = (self.selected + 10).min(match &self.plugin {
+                Some(PluginKind::LV2(LV2Plugin { port_list, .. })) => port_list.len() - 1,
+                _ => unimplemented!()
+            });
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::Char(',')) => {
+            match self.plugin.as_mut() {
+                Some(PluginKind::LV2(LV2Plugin { port_list, ref mut instance, .. })) => {
+                    let index = port_list[self.selected].index;
+                    if let Some(value) = instance.control_input(index) {
+                        instance.set_control_input(index, value - 0.01);
+                    }
+                },
+                _ => {}
+            }
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::Char('.')) => {
+            match self.plugin.as_mut() {
+                Some(PluginKind::LV2(LV2Plugin { port_list, ref mut instance, .. })) => {
+                    let index = port_list[self.selected].index;
+                    if let Some(value) = instance.control_input(index) {
+                        instance.set_control_input(index, value + 0.01);
+                    }
+                },
+                _ => {}
+            }
+            Ok(Some(true))
+        },
+        key_pat!(KeyCode::Char('g')) => {
+            match self.plugin {
+                //Some(PluginKind::LV2(ref mut plugin)) => {
+                    //plugin.ui_thread = Some(run_lv2_ui(LV2PluginUI::new()?)?);
+                //},
+                Some(_) => unreachable!(),
+                None => {}
+            }
+            Ok(Some(true))
+        },
+        _ => Ok(None)
+    }
+});