first commit

.gitignore

@@ -0,0 +1,3 @@
+/target
+.idea
+Cargo.lock

Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "pwsp"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+egui = "0.31.0"
+eframe = "0.31.0"
+egui_material_icons = "0.3.0"
+rfd = "0.15.2"
+dirs = "6.0.0"
+rodio = {version = "0.20.1", default-features = false, features = ["symphonia-all"]}
+metadata = "0.1.10"
+
+[profile.release]
+strip = true
+lto = true
+codegen-units = 1
+opt-level = "z"
+panic = "abort"
+

README.md

@@ -0,0 +1,48 @@
+# PipeWire SoundPad
+
+This is a simple soundpad application written in Rust using egui for the GUI, pipewire for audio input/output, and rodio for audio decoding. It allows you to play various audio files (mp3, wav, ogg, flac, mp4, aac) through your microphone.
+
+![ScreenShot](screenshot.png)
+
+## Features
+
+*   **Audio File Playback:** Supports a wide range of audio formats including mp3, wav, ogg, flac, mp4, and aac.
+*   **Microphone Output:** Plays selected audio files through the chosen microphone.
+*   **PipeWire Integration:** Leverages PipeWire for efficient audio routing and device management.
+*   **egui GUI:** Provides a user-friendly interface for file selection, playback control, and microphone selection.
+*   **Directory Management:** Allows adding and removing directories for organizing audio files.
+*   **Search Functionality:** Enables searching for specific audio files within loaded directories.
+*   **Playback Control:** Offers play/pause functionality, volume control, and a playback position slider.
+*   **Persistent Configuration:** Saves the list of added directories and the selected microphone for future use.
+
+## Installation
+
+1.  **Rust and Cargo:** Ensure you have Rust and Cargo installed. You can install them from [https://www.rust-lang.org/tools/install](https://www.rust-lang.org/tools/install).
+2.  **Dependencies:** This project requires PipeWire to be installed on your system.  The specific installation steps will depend on your distribution.
+3.  **Clone the Repository:** Clone this repository to your local machine.
+4.  **Build:** Navigate to the project directory in your terminal and run `cargo build --release`.
+
+## Usage
+
+1.  **Run:** After building, run the application using `cargo run --release`.
+2.  **Add Directories:** Click the "+" button to add directories containing your audio files.
+3.  **Select Directory:** Click on a directory in the list to view its contents.
+4.  **Select Audio File:** Click on an audio file in the list to select it.
+5.  **Choose Microphone:** Select your desired microphone from the dropdown menu.
+6.  **Play/Pause:** Use the play/pause button to control playback.
+7.  **Volume:** Adjust the volume using the volume slider.
+8.  **Seek:** Use the playback position slider to navigate through the audio file.
+9.  **Search:** Use the search bar to filter audio files by name.
+
+## Configuration
+
+The application saves the list of added directories and the selected microphone in the application's configuration directory.  This directory is typically located at `~/.config/pwsp`.
+
+
+## Contributing
+
+Contributions are welcome! Please open an issue or submit a pull request.
+
+## License
+
+[MIT](LICENSE)

src/main.rs

@@ -0,0 +1,465 @@
+use eframe::{CreationContext, Frame, NativeOptions};
+use egui::{
+    Button, CentralPanel, ComboBox, Context, Label, ScrollArea, Separator, Slider, TextEdit, Ui,
+    Vec2,
+};
+use egui_material_icons::icons;
+use metadata::media_file::MediaFileMetadata;
+use rfd::FileDialog;
+use rodio::{Decoder, OutputStream, OutputStreamHandle, Sink};
+use std::io::Write;
+use std::{fs, path::PathBuf};
+
+mod pw;
+
+enum PlayerState {
+    PLAYING,
+    PAUSED,
+}
+
+impl Default for PlayerState {
+    fn default() -> Self {
+        PlayerState::PAUSED
+    }
+}
+
+#[derive(Default)]
+struct App {
+    player_position: f32,
+    prev_player_position: f32,
+    max_player_position: f32,
+
+    volume: f32,
+
+    player_state: PlayerState,
+
+    directories: Vec<PathBuf>,
+    deleted_directory: Option<usize>,
+    current_directory: Option<usize>,
+
+    selected_input_device: String,
+    available_input_devices: Vec<pw::InputDevice>,
+
+    current_file: PathBuf,
+
+    search_query: String,
+
+    _audio_stream: Option<OutputStream>,
+    _audio_stream_handle: Option<OutputStreamHandle>,
+    audio_sink: Option<Sink>,
+}
+
+impl App {
+    pub fn new(_cc: &CreationContext<'_>) -> Self {
+        let saved_dirs_path = dirs::config_dir().unwrap().join("pwsp").join("saved_dirs");
+        let saved_dirs_content = fs::read_to_string(&saved_dirs_path).unwrap_or_default();
+        let saved_dirs: Vec<_> = saved_dirs_content.lines().map(PathBuf::from).collect();
+        let current_directory = match saved_dirs.is_empty() {
+            false => Some(0),
+            true => None,
+        };
+
+        let saved_mic_path = dirs::config_dir().unwrap().join("pwsp").join("saved_mic");
+        let saved_mic_content = fs::read_to_string(&saved_mic_path).unwrap_or_default();
+
+        let (_audio_stream, audio_stream_handle) = OutputStream::try_default().unwrap();
+        let audio_sink = Sink::try_new(&audio_stream_handle).unwrap();
+        audio_sink.pause();
+
+        Self {
+            max_player_position: 1.0,
+            directories: saved_dirs,
+            selected_input_device: saved_mic_content,
+            _audio_stream: Some(_audio_stream),
+            _audio_stream_handle: Some(audio_stream_handle),
+            audio_sink: Some(audio_sink),
+            volume: 1.0,
+            current_directory,
+
+            ..Default::default()
+        }
+    }
+
+    fn upd(&mut self, ui: &mut Ui, ctx: &Context, _frame: &mut Frame) {
+        self.available_input_devices = pw::get_input_devices().unwrap();
+
+        let saved_mic_path = dirs::config_dir().unwrap().join("pwsp").join("saved_mic");
+        let saved_mic_content = fs::read_to_string(&saved_mic_path).unwrap_or_default();
+        if self.selected_input_device != saved_mic_content {
+            fs::write(saved_mic_path, self.selected_input_device.clone()).ok();
+        }
+
+        if let PlayerState::PLAYING = self.player_state {
+            ctx.request_repaint();
+            self.audio_sink.as_ref().unwrap().set_volume(self.volume);
+        }
+
+        self.player_state = match self.audio_sink.as_ref().unwrap().is_paused() {
+            true => PlayerState::PAUSED,
+            false => PlayerState::PLAYING,
+        };
+
+        if self.player_position != self.prev_player_position {
+            let target_pos = core::time::Duration::from_secs_f32(self.player_position);
+            self.audio_sink
+                .as_ref()
+                .unwrap()
+                .try_seek(target_pos)
+                .unwrap();
+            self.prev_player_position = self.player_position;
+        } else {
+            self.player_position = self.audio_sink.as_ref().unwrap().get_pos().as_secs_f32();
+        }
+
+        self.prev_player_position = self.player_position;
+
+        self.render_ui(ui);
+    }
+
+    fn render_ui(&mut self, ui: &mut Ui) {
+        self.render_player(ui);
+
+        ui.add_space(10.0);
+        ui.separator();
+        ui.add_space(10.0);
+
+        self.render_content(ui);
+    }
+
+    fn render_player(&mut self, ui: &mut Ui) {
+        let file_title_label = Label::new(
+            self.current_file
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or(""),
+        );
+
+        let play_button_icon = match self.player_state {
+            PlayerState::PLAYING => icons::ICON_PAUSE,
+            PlayerState::PAUSED => icons::ICON_PLAY_ARROW,
+        };
+        let play_button = Button::new(play_button_icon).corner_radius(15.0);
+
+        let position_minutes = (self.player_position / 60.0) as i32;
+        let position_seconds = (self.player_position - (position_minutes as f32) * 60.0) as i32;
+        let position_minutes_str = match position_minutes.to_string().chars().count() {
+            1 => "0".to_string() + &position_minutes.to_string(),
+            2 => position_minutes.to_string(),
+            _ => "00".to_string(),
+        };
+        let position_seconds_str = match position_seconds.to_string().chars().count() {
+            1 => "0".to_string() + &position_seconds.to_string(),
+            2 => position_seconds.to_string(),
+            _ => "00".to_string(),
+        };
+        let player_position_label =
+            Label::new(format!("{}:{}", position_minutes_str, position_seconds_str));
+
+        let player_position_slider =
+            Slider::new(&mut self.player_position, 0.0..=self.max_player_position)
+                .show_value(false);
+
+        let volume_slider = Slider::new(&mut self.volume, 0.0..=1.0).show_value(false);
+
+        ui.add_space(10.0);
+
+        ui.horizontal_top(|ui| {
+            let play_button_response = ui.add_sized([30.0, 30.0], play_button);
+            if !self.current_file.display().to_string().is_empty() && play_button_response.clicked()
+            {
+                match self.player_state {
+                    PlayerState::PLAYING => {
+                        self.audio_sink.as_ref().unwrap().pause();
+                    }
+                    PlayerState::PAUSED => {
+                        self.audio_sink.as_ref().unwrap().play();
+                    }
+                }
+            }
+
+            ui.vertical(|ui| {
+                ui.spacing_mut().slider_width = ui.available_width() - 150.0;
+                ui.add_sized([ui.available_width() - 150.0, 15.0], file_title_label);
+                ui.add_sized([ui.available_width() - 150.0, 15.0], player_position_slider);
+            });
+
+            ui.add_sized([30.0, 30.0], player_position_label);
+
+            let volume_slider_response = ui.add_sized([15.0, 30.0], volume_slider);
+            if volume_slider_response.changed() {
+                // println!("{}", self.volume.);
+            }
+        });
+    }
+
+    fn render_content(&mut self, ui: &mut Ui) {
+        let dirs_area_size = Vec2::new(120.0, ui.available_height());
+
+        ui.horizontal(|ui| {
+            ui.vertical(|ui| {
+                self.render_directories_list(ui, dirs_area_size);
+                self.render_mic_selection(ui);
+            });
+            ui.allocate_ui(dirs_area_size, |ui| {
+                if !self.directories.is_empty() {
+                    ui.add(Separator::default().vertical());
+                }
+            });
+
+            let music_area_size = Vec2::new(ui.available_width(), ui.available_height());
+            self.render_music_list(ui, music_area_size);
+        });
+
+        self.handle_directory_deletion();
+    }
+
+    fn render_directories_list(&mut self, ui: &mut Ui, scroll_area_size: Vec2) {
+        let add_dir_button = Button::new(icons::ICON_ADD).frame(false);
+
+        ui.vertical(|ui| {
+            let add_dir_button_response = ui.add_sized([20.0, 20.0], add_dir_button);
+            if add_dir_button_response.clicked() {
+                self.handle_directory_adding();
+            }
+
+            ui.add_space(10.0);
+
+            ui.allocate_ui(scroll_area_size, |ui| {
+                ScrollArea::vertical().id_salt(0).show(ui, |ui| {
+                    for (index, dir) in self.directories.iter().enumerate() {
+                        let dir_name = dir
+                            .file_name()
+                            .and_then(|n| n.to_str())
+                            .unwrap_or("Invalid Directory");
+                        let dir_button = Button::new(dir_name).frame(false);
+
+                        let dir_delete_button = Button::new(icons::ICON_DELETE).frame(false);
+
+                        ui.horizontal(|ui| {
+                            let dir_button_response = ui.add(dir_button);
+                            if dir_button_response.clicked() {
+                                self.current_directory = Some(index);
+                            }
+
+                            let directory_delete_button_response = ui.add(dir_delete_button);
+                            if directory_delete_button_response.clicked() {
+                                self.deleted_directory = Some(index);
+                            }
+                        });
+                        ui.separator();
+                    }
+                });
+            });
+        });
+    }
+
+    fn handle_directory_adding(&mut self) {
+        if let Some(dirs) = FileDialog::pick_folders(Default::default()) {
+            let saved_dirs_path = dirs::config_dir().unwrap().join("pwsp").join("saved_dirs");
+            if let Ok(mut file) = fs::OpenOptions::new().append(true).open(saved_dirs_path) {
+                for path in dirs {
+                    if !self.directories.contains(&path) {
+                        self.directories.push(path.clone());
+                        writeln!(file, "{}", path.display()).ok();
+                    }
+                }
+            }
+        }
+    }
+
+    fn handle_directory_deletion(&mut self) {
+        if let Some(index) = self.deleted_directory {
+            if let Some(current_index) = self.current_directory {
+                if current_index > index {
+                    self.current_directory = Some(current_index - 1);
+                } else if current_index == index {
+                    self.current_directory = None;
+                }
+            }
+
+            self.directories.remove(index);
+            self.deleted_directory = None;
+
+            let saved_dirs_path = dirs::config_dir().unwrap().join("pwsp").join("saved_dirs");
+            let content = self
+                .directories
+                .iter()
+                .map(|p| p.display().to_string())
+                .collect::<Vec<_>>()
+                .join("\n");
+
+            fs::write(saved_dirs_path, content).ok();
+        }
+    }
+
+    fn render_music_list(&mut self, ui: &mut Ui, scroll_area_size: Vec2) {
+        if self.current_directory.is_none() {
+            return;
+        }
+
+        let current_path = self
+            .directories
+            .get(self.current_directory.unwrap())
+            .unwrap();
+        if !fs::exists(current_path).ok().unwrap_or(false) {
+            self.deleted_directory = self.current_directory;
+            return;
+        }
+
+        let files = fs::read_dir(current_path).ok().unwrap();
+        let mut music_files = Vec::new();
+        let music_extensions = ["mp3", "wav", "ogg", "flac", "mp4", "aac"].to_vec();
+        for file in files {
+            let path = file.unwrap().path();
+
+            if !path.is_file() {
+                continue;
+            }
+
+            if let Some(extension) = path.extension().and_then(|n| n.to_str()) {
+                if music_extensions.contains(&extension.to_lowercase().as_str()) {
+                    if path
+                        .to_str()
+                        .unwrap()
+                        .to_string()
+                        .to_lowercase()
+                        .contains(self.search_query.as_str())
+                    {
+                        music_files.push(path);
+                    }
+                }
+            }
+        }
+        ui.vertical(|ui| {
+            let search_entry = TextEdit::singleline(&mut self.search_query);
+            ui.add_sized([ui.available_width(), 20.0], search_entry);
+
+            ui.separator();
+
+            ui.allocate_ui(scroll_area_size, |ui| {
+                ScrollArea::vertical().id_salt(1).show(ui, |ui| {
+                    for file in music_files.iter() {
+                        let file_name = file.file_name().and_then(|n| n.to_str()).unwrap();
+                        let file_button = Button::new(file_name).frame(false);
+                        let file_button_response = ui.add(file_button);
+                        if file_button_response.clicked() {
+                            self.current_file = file.to_path_buf();
+                            self.play_current_file();
+                        }
+                        ui.separator();
+                    }
+                });
+            });
+        });
+    }
+
+    fn render_mic_selection(&mut self, ui: &mut Ui) {
+        ComboBox::from_label("Choose MIC")
+            .selected_text(format!("{:?}", self.selected_input_device))
+            .show_ui(ui, |ui| {
+                for device in self.available_input_devices.iter() {
+                    ui.selectable_value(
+                        &mut self.selected_input_device,
+                        device.audio_device.name.clone(),
+                        device.audio_device.nick.clone(),
+                    );
+                }
+            });
+    }
+
+    fn play_current_file(&mut self) {
+        if self.current_file.to_str().unwrap().is_empty() {
+            return;
+        }
+
+        if !self.current_file.exists() {
+            return;
+        }
+
+        if !self.selected_input_device.is_empty() {
+            self.link_devices();
+        }
+
+        let file = fs::File::open(self.current_file.display().to_string()).unwrap();
+        let source = Decoder::new(file).unwrap();
+
+        let metadata = MediaFileMetadata::new(&self.current_file.as_path()).unwrap();
+        self.max_player_position = metadata._duration.unwrap() as f32;
+
+        self.audio_sink.as_ref().unwrap().stop();
+        self.audio_sink.as_ref().unwrap().play();
+        self.audio_sink.as_ref().unwrap().append(source);
+    }
+
+    fn link_devices(&self) {
+        let output_devices = pw::get_output_devices().unwrap();
+        let mut pwsp_output: Option<&pw::OutputDevice> = None;
+
+        for device in output_devices.iter() {
+            if device.audio_device.name == "alsa_playback.pwsp" {
+                pwsp_output = Some(device);
+                break;
+            }
+        }
+
+        if pwsp_output.is_none() {
+            return;
+        }
+
+        let input_devices = pw::get_input_devices().unwrap();
+        let mut mic: Option<&pw::InputDevice> = None;
+
+        for device in input_devices.iter() {
+            if device.audio_device.name == self.selected_input_device {
+                mic = Some(device);
+                break;
+            }
+        }
+
+        if mic.is_none() {
+            return;
+        }
+
+        pwsp_output.unwrap().link(mic.unwrap());
+    }
+}
+
+impl eframe::App for App {
+    fn update(&mut self, ctx: &Context, frame: &mut Frame) {
+        CentralPanel::default().show(ctx, |ui| self.upd(ui, ctx, frame));
+    }
+}
+
+fn main() -> Result<(), eframe::Error> {
+    let config_dir_path = dirs::config_dir().unwrap().join("pwsp");
+    fs::create_dir_all(&config_dir_path).ok();
+
+    if !fs::exists(config_dir_path.join("saved_dirs"))
+        .ok()
+        .unwrap_or(false)
+    {
+        fs::File::create(config_dir_path.join("saved_dirs")).ok();
+    }
+    if !fs::exists(config_dir_path.join("saved_mic"))
+        .ok()
+        .unwrap_or(false)
+    {
+        fs::File::create(config_dir_path.join("saved_mic")).ok();
+    }
+
+    let mut options = NativeOptions {
+        ..Default::default()
+    };
+    options.viewport.min_inner_size = Some(Vec2::new(400.0, 400.0));
+    options.vsync = true;
+    options.hardware_acceleration = eframe::HardwareAcceleration::Preferred;
+
+    eframe::run_native(
+        "PipeWire SoundPad",
+        options,
+        Box::new(|cc| {
+            egui_material_icons::initialize(&cc.egui_ctx);
+            Ok(Box::new(App::new(cc)))
+        }),
+    )
+}

src/pw.rs

@@ -0,0 +1,216 @@
+use std::error::Error;
+use std::process::Command;
+use std::collections::HashMap;
+
+
+pub struct AudioDevice {
+    pub nick: String,
+    pub name: String
+}
+
+
+pub struct InputDevice {
+    pub audio_device: AudioDevice,
+    pub input_fl: String,
+    pub input_fr: String
+}
+
+
+pub struct OutputDevice {
+    pub audio_device: AudioDevice,
+    pub output_fl: String,
+    pub output_fr: String
+}
+
+
+impl OutputDevice {
+    pub fn link(&self, input_device: &InputDevice) {
+        let _ = Command::new("pw-link")
+            .arg(&self.output_fl)
+            .arg(&input_device.input_fl)
+            .status();
+
+        let _ = Command::new("pw-link")
+            .arg(&self.output_fr)
+            .arg(&input_device.input_fr)
+            .status();
+    }
+}
+
+
+fn get_pw_entries() -> Result<Vec<HashMap<String, String>>, Box<dyn Error>> {
+    let output = Command::new("pw-cli")
+        .args(&["ls", "Node"])
+        .output()
+        .expect("Failed to execute pw-cli ls Node");
+
+    let output_str = String::from_utf8_lossy(&output.stdout);
+
+    let mut entries = Vec::new();
+    let mut current_entry = HashMap::new();
+
+    for line in output_str.lines() {
+        let line = line.trim();
+
+        if line.is_empty() {
+            continue
+        }
+
+        if line.starts_with("id ") {
+            if !current_entry.is_empty() {
+                entries.push(current_entry);
+                current_entry = HashMap::new();
+            }
+        } else {
+            let mut parts = line.splitn(2, " = ");
+
+            let key = match parts.next() {
+                Some(k) => k.trim().to_string(),
+                None => continue
+            };
+
+            let value = match parts.next() {
+                Some(k) => k.trim().strip_prefix("\"").unwrap().strip_suffix("\"").unwrap().to_string(),
+                None => continue
+            };
+
+            current_entry.insert(key, value);
+        }
+    }
+
+    if !current_entry.is_empty() {
+        entries.push(current_entry);
+    }
+
+    Ok(entries)
+}
+
+pub fn get_input_devices() -> Result<Vec<InputDevice>, Box<dyn Error>> {
+    let entries = get_pw_entries()?;
+
+    let mut input_devices = Vec::new();
+
+    for entry in entries.iter() {
+        let media_class = entry.get("media.class").map(String::as_str).unwrap_or("");
+        let nick = entry.get("node.nick").map(String::as_str)
+            .unwrap_or(entry.get("node.description").map(String::as_str)
+                .unwrap_or(entry.get("node.name").map(String::as_str).unwrap_or("")));
+        let name = entry.get("node.name").map(String::as_str).unwrap_or("");
+
+        if media_class.is_empty() {
+            continue
+        }
+
+        if !media_class.starts_with(&"Audio/Source") {
+            continue
+        }
+
+        if nick.is_empty() || name.is_empty() {
+            continue
+        }
+
+        let audio_device = AudioDevice {
+            nick: nick.to_string(),
+            name: name.to_string(),
+        };
+
+        let device = InputDevice {
+            audio_device,
+            input_fl: String::new(),
+            input_fr: String::new()
+        };
+
+        input_devices.push(device);
+    }
+
+    let output = Command::new("pw-link")
+        .arg("-i")
+        .output()
+        .expect("Failed to execute pw-link -i");
+
+    let output_str = String::from_utf8_lossy(&output.stdout);
+
+    for line in output_str.lines() {
+        let line = line.trim();
+
+        for device in input_devices.iter_mut() {
+            if line.starts_with(device.audio_device.name.as_str()) {
+                if line.ends_with("input_MONO") {
+                    device.input_fl = line.to_string();
+                    device.input_fr = line.to_string();
+                } else if line.ends_with("input_FL") {
+                    device.input_fl = line.to_string();
+                } else if line.ends_with("input_FR") {
+                    device.input_fr = line.to_string();
+                }
+            }
+        }
+    }
+
+    Ok(input_devices)
+}
+
+pub fn get_output_devices() -> Result<Vec<OutputDevice>, Box<dyn Error>> {
+    let entries = get_pw_entries()?;
+
+    let mut output_devices = Vec::new();
+
+    for entry in entries.iter() {
+        let media_class = entry.get("media.class").map(String::as_str).unwrap_or("");
+        let nick = entry.get("node.nick").map(String::as_str)
+            .unwrap_or(entry.get("node.description").map(String::as_str)
+                .unwrap_or(entry.get("node.name").map(String::as_str).unwrap_or("")));
+        let name = entry.get("node.name").map(String::as_str).unwrap_or("");
+
+        if media_class.is_empty() {
+            continue
+        }
+
+        if !media_class.starts_with(&"Stream/Output/Audio") {
+            continue
+        }
+
+        if nick.is_empty() || name.is_empty() {
+            continue
+        }
+
+        let audio_device = AudioDevice {
+            nick: nick.to_string(),
+            name: name.to_string(),
+        };
+
+        let device = OutputDevice {
+            audio_device,
+            output_fl: String::new(),
+            output_fr: String::new()
+        };
+
+        output_devices.push(device);
+    }
+
+    let output = Command::new("pw-link")
+        .arg("-o")
+        .output()
+        .expect("Failed to execute pw-link -o");
+
+    let output_str = String::from_utf8_lossy(&output.stdout);
+
+    for line in output_str.lines() {
+        let line = line.trim();
+
+        for device in output_devices.iter_mut() {
+            if line.starts_with(device.audio_device.name.as_str()) {
+                if line.ends_with("capture_MONO") {
+                    device.output_fl = line.to_string();
+                    device.output_fr = line.to_string();
+                } else if line.ends_with("output_FL") {
+                    device.output_fl = line.to_string();
+                } else if line.ends_with("output_FR") {
+                    device.output_fr = line.to_string();
+                }
+            }
+        }
+    }
+
+    Ok(output_devices)
+}