Add a feature based dummy implementation

Signed-off-by: Nikolai Rodionov <allanger@badhouseplants.net>

.codespellrc

@@ -0,0 +1,2 @@
+[codespell]
+ignore-words-list = ratatui

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
 resolver = "3"
-members = ["engine", "examples/jack-sine", "lib"]
+members = ["engine", "examples/jack-sine", "lib", "tui"]
 
 [workspace.dependencies]

README.md

@@ -1,2 +1,8 @@
 # termix
 [![status-badge](https://ci.badhouseplants.net/api/badges/19/status.svg)](https://ci.badhouseplants.net/repos/19)
+
+
+# Requirenments
+
+On all systems:
+- protoc

engine/Cargo.toml

@@ -4,9 +4,17 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+clap = { version = "4.5.53", features = ["derive"] }
 coreaudio-rs = { version = "0.13.0", optional = true }
+env_logger = "0.11.8"
 jack = {version = "0.13.3", optional = true }
 lib = { path = "../lib/" }
+log = "0.4.28"
+prost = "0.14.1"
+tokio = { version = "1.48.0", features = ["rt-multi-thread"] }
+tonic = "0.14.2"
+tonic-prost = "0.14.2"
+tonic-reflection = "0.14.2"
 
 [features]
 jack = ["dep:jack"]

engine/src/audio_engine/jack_ab.rs

@@ -0,0 +1,46 @@
+use crate::audio_engine::AudioBackend;
+
+pub(crate) struct JackAudioBackend {
+    pub(crate) feature_jack: bool,
+    pub(crate) running: bool,
+}
+
+impl JackAudioBackend {
+    pub(crate) fn new() -> Self {
+
+        let feature_jack = cfg!(feature = "jack");
+        // TODO: It should be retrieved from the system
+        let running = true;
+        Self { feature_jack, running }
+    }
+}
+
+#[cfg(feature = "jack")]
+impl AudioBackend for JackAudioBackend {
+    fn start_client(&self) {
+        todo!()
+    }
+
+    fn init_client(&self) {
+        todo!()
+    }
+
+    fn discover(&self) {
+        todo!()
+    }
+}
+
+#[cfg(not(feature = "jack"))]
+impl AudioBackend for JackAudioBackend {
+    fn start_client(&self) {
+        unimplemented!()
+    }
+
+    fn init_client(&self) {
+        unimplemented!()
+    }
+
+    fn discover(&self) {
+        unimplemented!()
+    }
+}

engine/src/audio_engine/mod.rs

@@ -1,12 +1,12 @@
-mod jack;
-mod coreaudio;
+pub(crate) mod jack_ab;
 
-trait AudioBackend {
+pub(crate) trait AudioBackend {
     // Start a audio backend client
     // It should be executed either on the startup,
     // or when the audio backend is switched
-    fn start_client();
+    fn start_client(&self);
     // Initialization of the client should happen
     // when a project is opened.
-    fn init_client();
+    fn init_client(&self);
+    fn discover(&self);
 }

engine/src/control_pane/dummy.rs

@@ -0,0 +1,9 @@
+use crate::control_pane::ControlPane;
+
+struct Dummy {}
+
+impl ControlPane for Dummy {
+    async fn start_server(&self) -> Result<(), Box<dyn std::error::Error>> {
+        todo!()
+    }
+}

engine/src/control_pane/grpc/mod.rs

@@ -0,0 +1,74 @@
+use lib::termix::audio_backend::{
+    self, Backend, BackendList, FILE_DESCRIPTOR_SET,
+    audio_backend_server::{AudioBackend, AudioBackendServer},
+};
+use log::info;
+use tonic::{Response, transport::Server};
+use tonic_reflection::server;
+
+
+use crate::{audio_engine::jack_ab::JackAudioBackend, control_pane::ControlPane};
+
+pub(crate) struct Grpc {
+    pub(crate) port: i32,
+    pub(crate) enable_reflections: bool,
+}
+
+impl ControlPane for Grpc {
+    async fn start_server(&self) -> Result<(), Box<dyn std::error::Error>> {
+        info!("starting the grpc server on port {}", self.port);
+        // TODO: Use the port from self
+        let addr = "[::1]:50051".parse()?;
+        let mut server = Server::builder();
+        let audio_backend_reflections = server::Builder::configure()
+            .register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
+            .build_v1()
+            .unwrap();
+        let audio_backend = TermixAudioBackend::default();
+
+        server
+            .add_service(audio_backend_reflections)
+            .add_service(AudioBackendServer::new(audio_backend))
+            .serve(addr)
+            .await?;
+
+        Ok(())
+    }
+}
+
+#[derive(Debug, Default)]
+pub struct TermixAudioBackend {}
+
+#[tonic::async_trait]
+impl AudioBackend for TermixAudioBackend {
+    async fn start_client(
+        &self,
+        requesa: tonic::Request<()>,
+    ) -> std::result::Result<tonic::Response<()>, tonic::Status> {
+        info!("starting the audio backend client");
+        todo!()
+    }
+
+    async fn init_connection(
+        &self,
+        request: tonic::Request<()>,
+    ) -> std::result::Result<tonic::Response<()>, tonic::Status> {
+        info!("initializing the connection to the audio backend");
+        todo!()
+    }
+
+    async fn get_available_backends(
+        &self,
+        request: tonic::Request<()>,
+    ) -> Result<Response<BackendList>, tonic::Status> {
+        info!("discovering available backends");
+        let mut response = BackendList::default();
+        let jack = JackAudioBackend::new();
+        if jack.feature_jack {
+          response.backends.push(Backend {
+            name: "jack".to_string(),
+          });
+        }
+        Ok(Response::new(response))
+    }
+}

engine/src/control_pane/mod.rs

@@ -0,0 +1,6 @@
+pub(crate) mod dummy;
+pub(crate) mod grpc;
+
+pub(crate) trait ControlPane {
+    async fn start_server(&self) -> Result<(), Box<dyn std::error::Error>>;
+}

engine/src/main.rs

@@ -1,35 +1,29 @@
-mod audio_engine;
+pub(crate) mod audio_engine;
+pub(crate) mod control_pane;
 
-use lib::{self, metadata::Metadata, track::Track};
+use crate::control_pane::ControlPane;
+use clap::Parser;
 
-fn main() {
-    let mut current_project = lib::project::Project {
-        name: "test".to_string(),
-        tracks: None,
-        regions: None,
-        current_sample: 0,
-    };
-
-    let track = Track {
-        metadata: Metadata::new("test".to_string()),
-        track_type: lib::track::TrackType::Audio,
-        active: true,
-    };
-
-    current_project.tracks = Some(vec![track]);
-
-    /*
-     * Engine should run and wait for commands,
-     * but currently I need to implement the multitrack
-     * audio player somehow
-     *
-     *
-     * for track in tracks {
-     *   if track.is_region_playing(now: time) {
-     *     let current_region = track.get_current_region(now: time)
-     *     let audio = current_region.get_data(now: time)
-     *   }
-     * }
-     */
-    println!("Hello, world!");
+/// Simple program to greet a person
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+struct Args {
+    #[arg(long, default_value_t = 50051)]
+    grpc_port: i32,
+    #[arg(long, default_value_t = true)]
+    grpc_enable_reflections: bool,
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    env_logger::init();
+    let args = Args::parse();
+
+    let grpc_control_pane = control_pane::grpc::Grpc {
+        port: args.grpc_port,
+        enable_reflections: args.grpc_enable_reflections,
+    };
+    grpc_control_pane.start_server().await?;
+
+    Ok(())
 }

lib/Cargo.toml

@@ -4,4 +4,13 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+prost = "0.14.1"
+tokio = { version = "1.48.0", features = ["rt-multi-thread"] }
+tonic = "0.14.2"
+tonic-prost = "0.14.2"
 uuid = { version = "1.18.1", features = ["v4"] }
+
+[build-dependencies]
+prost-build = "0.14.1"
+prost-types = "0.14.1"
+tonic-prost-build = "0.14.2"

lib/build.rs

@@ -0,0 +1,17 @@
+use std::{env, io::Result, path::PathBuf};
+
+fn main() -> Result<()> {
+    //let proto_dir = "proto";
+    //let paths = fs::read_dir(proto_dir).unwrap();
+    //for path in paths {
+    //    prost_build::compile_protos(&[path.unwrap().path()], &[proto_dir])?;
+    //}
+    //
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    tonic_prost_build::configure()
+        .file_descriptor_set_path(out_dir.join("audio_backend_descriptor.bin"))
+        .compile_protos(&["proto/audio_backend.proto"], &["proto"])
+        .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
+
+    Ok(())
+}

lib/proto/audio_backend.proto

@@ -0,0 +1,22 @@
+syntax = "proto3";
+package termix.audio_backend;
+
+import "google/protobuf/empty.proto";
+
+service AudioBackend {
+  rpc StartClient(google.protobuf.Empty) returns (google.protobuf.Empty);
+  rpc InitConnection(google.protobuf.Empty) returns (google.protobuf.Empty);
+  rpc GetAvailableBackends(google.protobuf.Empty) returns (BackendList);
+}
+
+message BackendList {
+  repeated Backend backends = 1;
+}
+
+message Backend {
+  string name = 1;
+}
+
+message Shirt {
+  google.protobuf.Empty dummy = 1;
+}

lib/src/lib.rs

@@ -1,5 +1,7 @@
-pub mod metadata;
-
-pub mod project;
-pub mod region;
-pub mod track;
+pub mod termix {
+    pub mod audio_backend {
+        pub const FILE_DESCRIPTOR_SET: &[u8] =
+            tonic::include_file_descriptor_set!("audio_backend_descriptor");
+        tonic::include_proto!("termix.audio_backend");
+    }
+}

tui/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "tui"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+clap = { version = "4.5.53", features = ["derive"] }
+color-eyre = "0.6.5"
+crossterm = "0.29.0"
+ratatui = "0.29.0"

tui/src/main.rs

@@ -0,0 +1,31 @@
+use clap::Parser;
+use color_eyre::Result;
+use crossterm::event::{self, Event};
+use ratatui::{DefaultTerminal, Frame};
+
+/// Simple program to greet a person
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+struct Args {}
+
+fn main() -> Result<()> {
+    let _ = Args::parse();
+    color_eyre::install()?;
+    let terminal = ratatui::init();
+    let result = run(terminal);
+    ratatui::restore();
+    result
+}
+
+fn run(mut terminal: DefaultTerminal) -> Result<()> {
+    loop {
+        terminal.draw(render)?;
+        if matches!(event::read()?, Event::Key(_)) {
+            break Ok(());
+        }
+    }
+}
+
+fn render(frame: &mut Frame) {
+    frame.render_widget("hello world", frame.area());
+}