[cln] Code cleanup

src/device/device.rs

@@ -1,9 +1,5 @@
-use std::ops::SubAssign;
-use std::sync::atomic::{AtomicU16, Ordering};
-use std::sync::{Arc, Mutex, RwLock};
-use std::thread;
+use std::sync::{Arc, Mutex};
 use std::thread::{JoinHandle, sleep};
-use std::time::Duration;
 use rand::random;
 use crate::device::instruction::Instruction;
 use crate::device::keyboard::Keyboard;

src/device/keyboard.rs

@@ -32,7 +32,7 @@ impl Keyboard {
             let keyboard_event_recv_res = self.keyboard_event_receiver.try_recv();
             match keyboard_event_recv_res {
                 Ok(event) => {
-                    log::warn!("Processing {:?}",event);
+                    log::debug!("Processing {:?}",event);
                     self.update_keyboard_state(event);
                 }
                 Err(TryRecvError::Empty) => {
@@ -54,11 +54,9 @@ impl Keyboard {
     fn update_keyboard_state(&mut self, keyboard_event: KeyboardEvent) {
         match keyboard_event {
             KeyboardEvent::KeyUp(key) => {
-                log::debug!("Key Up - state {}",self.bitflags);
                 self.bitflags &= !((1 << key) as u16);
             }
             KeyboardEvent::KeyDown(key) => {
-                log::debug!("Key Down - state {}",self.bitflags);
                 self.bitflags |= 1 << key;
             }
         }

src/device/timer.rs

@@ -1,9 +1,9 @@
-use std::f32::consts::PI;
-use std::sync::{Arc, Mutex, RwLock};
+
+use std::sync::{Arc, Mutex};
 use std::sync::mpsc::SendError;
 use std::thread::{JoinHandle, sleep};
 use std::time::Duration;
-use sdl2::audio::AudioQueue;
+
 use crate::util::EmulatorResult;
 
 /// Manages the timer and the sound timer

src/main.rs

@@ -35,7 +35,7 @@ mod sdl_audio_adapter;
 
 fn main() -> EmulatorResult<()> {
     SimpleLogger::new().with_level(LevelFilter::Info).env().init().unwrap();
-    let Porcel8ProgramArgs { filename, new_chip8_behaviour: new_chip_behaviour,draw_scale } = Porcel8ProgramArgs::parse();
+    let Porcel8ProgramArgs { filename, new_chip8_behaviour,draw_scale } = Porcel8ProgramArgs::parse();
     log::info!("Started emulator");
 
     let mut timer = TimerManager::new();
@@ -45,7 +45,7 @@ fn main() -> EmulatorResult<()> {
 
     let audio_state = timer.start();
 
-    let mut sdl_aud_adapter = SdlAudioAdapter::new(audio_state,440.0,0.5,audio_queue);
+    let mut sdl_aud_adapter = SdlAudioAdapter::new(audio_state,440.0,0.85,audio_queue);
     
     
     let (frame_buffer_for_display, frame_buffer_for_device) = get_frame_buffer_references();
@@ -53,7 +53,7 @@ fn main() -> EmulatorResult<()> {
 
     let (device_termination_signal_sender, device_termination_signal_sender_receiver) = std::sync::mpsc::channel();
     let compute_handle = thread::Builder::new().name("Compute".to_string()).spawn(move || {
-        do_device_loop(timer, frame_buffer_for_device, device_termination_signal_sender_receiver, device_keyboard, filename, new_chip_behaviour);
+        do_device_loop(timer, frame_buffer_for_device, device_termination_signal_sender_receiver, device_keyboard, filename, new_chip8_behaviour);
     })?;
 
 
@@ -73,13 +73,11 @@ fn main() -> EmulatorResult<()> {
                 Event::KeyDown { keycode: Some(x), repeat: false, .. } => {
                     if let Some(key_val) = get_key_index(x) {
                         sdl_kb_adapter.send_key_down(key_val)?;
-                        log::info!("Key+ {}",key_val)
                     }
                 }
                 Event::KeyUp { keycode: Some(x), repeat: false, .. } => {
                     if let Some(key_val) = get_key_index(x) {
                         sdl_kb_adapter.send_key_up(key_val)?;
-                        log::info!("Key- {}",key_val)
                     }
                 }
                 _ => {}
@@ -102,7 +100,7 @@ fn main() -> EmulatorResult<()> {
     Ok(())
 }
 
-fn do_device_loop(mut timer: TimerManager, frame_buffer: Arc<Mutex<Box<[bool; 2048]>>>, receiver: Receiver<()>, device_keyboard: Keyboard, rom_file_location_option: Option<String>, new_chip_behaviour: bool) {
+fn do_device_loop(timer: TimerManager, frame_buffer: Arc<Mutex<Box<[bool; 2048]>>>, receiver: Receiver<()>, device_keyboard: Keyboard, rom_file_location_option: Option<String>, new_chip_behaviour: bool) {
     let mut device = Device::new(timer, frame_buffer, device_keyboard, new_chip_behaviour);
     device.set_default_font();
 

src/sdl_audio_adapter.rs

@@ -14,7 +14,7 @@ pub struct SdlAudioAdapter {
 /// An Audio adapter using `AudioQueue`.
 impl SdlAudioAdapter {
     pub const SAMPLING_FREQ:i32 = 15360;
-    pub const SAMPLES_PER_FRAME: usize = Self::SAMPLING_FREQ as usize / 60 + 2;
+    pub const SAMPLES_PER_FRAME: usize = (Self::SAMPLING_FREQ as usize / 60) * 2;
     pub fn new(sound_timer: Arc<Mutex<u8>>,
                freq: f32,
                volume: f32,
@@ -35,7 +35,7 @@ impl SdlAudioAdapter {
             let sound_timer = self.sound_timer.lock().expect("Could not lock to play audio");
             sound_timer.clone()
         };
-        if sound_timer>0 {
+        if sound_timer>0 && self.audio_queue.size() < Self::SAMPLING_FREQ as u32 {
             self.fill_audio();
             self.audio_queue.queue_audio(&self.buf)?;
         }

src/sdl_graphics_adapter.rs

@@ -30,7 +30,7 @@ impl SdlGraphicsAdapter {
 
         let tex_creator = window_canvas.texture_creator();
         let mut tex = tex_creator.create_texture(PixelFormatEnum::RGB24, TextureAccess::Streaming, Device::FRAME_BUFFER_WIDTH as u32, Device::FRAME_BUFFER_HEIGHT as u32).expect("Failed to create tex");
-        tex.with_lock(None, |u, i| {
+        tex.with_lock(None, |u, _i| {
             u.copy_from_slice(self.rgb_frame_buffer.as_slice());
         })?;
         window_canvas.copy(&tex, None, None)?;

src/sdl_keyboard_adapter.rs

@@ -23,10 +23,12 @@ impl SdlKeyboardAdapter {
     }
 
     pub fn send_key_up(&self, keycode: u8) -> EmulatorResult<u8> {
+        log::trace!("Sending Key up {}",keycode);
         self.keyboard_event_sender.send(KeyUp(keycode))?;
         Ok(keycode)
     }
     pub fn send_key_down(&self, keycode: u8) -> EmulatorResult<u8> {
+        log::trace!("Sending Key down {}",keycode);
         self.keyboard_event_sender.send(KeyDown(keycode))?;
         Ok(keycode)
     }

src/util.rs

@@ -10,7 +10,6 @@ pub type EmulatorResult<T> = Result<T, EmulatorError>;
 #[derive(Clone, Debug)]
 pub enum EmulatorError {
     SdlError(String),
-    AllocationError,
     IOError(String),
     MutexInvalidState(String)
 }
@@ -48,6 +47,6 @@ impl<T> From<PoisonError<T>> for EmulatorError{
 
 impl From<SendError<KeyboardEvent>> for EmulatorError{
     fn from(value: SendError<KeyboardEvent>) -> Self {
-        Self::IOError(format!("Failed to communicate keyboard stats to main thread: {}",value))
+        Self::IOError(format!("Failed to communicate keyboard event to main thread: {}",value))
     }
 }