App icon, logs are now stored to log.txt file, work in progress on intergration with rustpotter

src-tauri/src/recorder.rs

@@ -0,0 +1,63 @@
+use once_cell::sync::OnceCell;
+use std::sync::atomic::{AtomicU32, AtomicBool, Ordering};
+use pv_recorder::{Recorder, RecorderBuilder};
+use log::{info};
+
+use crate::DB;
+
+pub static FRAME_LENGTH: AtomicU32 = AtomicU32::new(0);
+static RECORDER: OnceCell<Recorder> = OnceCell::new();
+pub static IS_RECORDING: AtomicBool = AtomicBool::new(false);
+
+fn init_microphone() {
+    if RECORDER.get().is_none() {
+        RECORDER.get_or_init(|| RecorderBuilder::new()
+        .device_index(get_selected_microphone_index())
+        .frame_length(FRAME_LENGTH.load(Ordering::SeqCst) as i32)
+        .init()
+        .expect("Failed to initialize pvrecorder"));
+
+        info!("Microphone recorder initialized!")
+    }
+}
+
+pub fn read_microphone(frame_buffer: &mut [i16]) {
+    // ensure microphone is initialized
+    init_microphone();
+
+    // read to frame buffer
+    RECORDER.get().unwrap().read(frame_buffer).expect("Failed to read audio frame");
+}
+
+pub fn start_recording() {
+    // ensure microphone is initialized
+    init_microphone();
+
+    RECORDER.get().unwrap().start().expect("Failed to start audio recording!");
+    IS_RECORDING.store(true, Ordering::SeqCst);
+    info!("START recording from microphone ...");
+}
+
+pub fn stop_recording() {
+    // ensure microphone is initialized
+    init_microphone();
+
+    RECORDER.get().unwrap().start().expect("Failed to start audio recording!");
+    IS_RECORDING.store(false, Ordering::SeqCst);
+    info!("STOP recording from microphone ...");
+}
+
+pub fn get_selected_microphone_index() -> i32 {
+    let selected_microphone: i32;
+
+    // Retrieve microphone index
+    if let Some(smic) = DB.lock().unwrap().get::<String>("selected_microphone") {
+        selected_microphone = smic.parse().unwrap_or(-1);
+    } else {
+        selected_microphone = -1;
+    }
+
+    // return microphone index
+    info!("Selected microphone index = {selected_microphone}");
+    selected_microphone
+}