Remove unnecessary type casting in channel decode call

rust/oxide-decoders/src/decoders/acars.rs

@@ -425,7 +425,7 @@ pub struct ACARSDecoder {
 }
 
 impl Decoder for ACARSDecoder {
-    fn decode(&mut self, length: u32) {
+    fn decode(&mut self, length: usize) {
         self.demod_msk(length);
     }
 
@@ -477,10 +477,10 @@ impl ACARSDecoder {
         }
     }
 
-    pub fn demod_msk(&mut self, len: u32) {
+    pub fn demod_msk(&mut self, len: usize) {
         /* MSK demod */
 
-        for in_ in &mut self.dm_buffer.into_iter().take(len as usize) {
+        for in_ in &mut self.dm_buffer.into_iter().take(len) {
             let s: f32 = 1800.0 / INTRATE as f32 * 2.0 * std::f32::consts::PI + self.msk_df;
             let mut v: Complex<f32> = num::Complex::new(0.0, 0.0);
             let mut o: f32;

rust/oxide-decoders/src/lib.rs

@@ -32,7 +32,7 @@ pub enum ValidDecoderType {
 }
 
 pub trait Decoder: Send + Sync {
-    fn decode(&mut self, length: u32);
+    fn decode(&mut self, length: usize);
     fn get_wf_iter(&self) -> std::slice::Iter<'_, Complex<f32>>;
     fn set_dm_buffer_at_index(&mut self, index: usize, value: f32);
     fn set_output_channel(&mut self, channel: UnboundedSender<AssembledACARSMessage>);

rust/oxide-rtlsdr/src/lib.rs

@@ -335,7 +335,7 @@ impl RtlSdr {
                             }
                         }
                         for channel in &mut self.channel.iter_mut().take(self.frequencies.len()) {
-                            channel.decode(rtloutbufz as u32);
+                            channel.decode(rtloutbufz);
                         }
                     })
                     .unwrap();