Added support for the finetune part of the .MOD file format.

src/main.rs

@@ -12,5 +12,6 @@ use crate::tracker::Tracker;
 fn main() {
     let mut tracker = Tracker::new(4, 64);
     tracker.load_file("./3266CHIP.MOD");
-    tracker.play();
+    tracker.play_sample(2, 8287.0);
+    //tracker.play();
 }

src/sampler.rs

@@ -11,6 +11,8 @@ pub struct Sample {
 
 impl Sample {
     pub fn new(sample_rate: u32, sample: SampleInfo) -> Self {
+        println!("Sample data len: {}", sample.data.len());
+        println!("Sample reported len: {}", sample.length);
         Self {
             num_sample: 0,
             _sample_rate: sample_rate,
@@ -18,8 +20,17 @@ impl Sample {
         }
     }
 
-    pub fn set_sample_rate(&mut self, sample_rate: u32) {
-        self._sample_rate = sample_rate;
+    fn get_finetune(&self) -> u8 {
+        if (self.sample.finetune&0b1000) != 0 {
+            self.sample.finetune|0b11110000
+        } else {
+            self.sample.finetune
+        }
+    }
+
+    /// Sets the sample rate while accounting for finetuning.
+    pub fn set_sample_rate(&mut self, sample_rate: f32) {
+        self._sample_rate = (sample_rate*(1.06_f32.powf((self.get_finetune() as i8 as f32)/8.0))) as u32;
         self.num_sample = 0;
     }
 }

src/tracker.rs

@@ -53,7 +53,7 @@ impl Tracker {
                         let note = note.unwrap();
                         let frequency = note.frequency;
                         let sample = note.sample;
-                        self.samples[sample as usize].set_sample_rate(frequency as u32);
+                        self.samples[sample as usize].set_sample_rate(frequency);
                         self.sinks[track].append(
                             self.samples[sample as usize].clone()
                                 .take_duration(Duration::from_secs_f64(60.0/375.0))
@@ -80,6 +80,20 @@ impl Tracker {
         }
     }
 
+    pub fn play_sample(&mut self, sample: u8, frequency: f32) {
+        self.sinks[0].pause();
+
+        self.samples[sample as usize].set_sample_rate(frequency);
+        self.sinks[0].append(
+            self.samples[sample as usize].clone()
+                //.take_duration(Duration::from_secs_f64(60.0/375.0))
+                .amplify(0.20)
+        );
+
+        self.sinks[0].play();
+        self.sinks[0].sleep_until_end();
+    }
+
     pub fn load_file(&mut self, file: &str) {
         let mut reader = BufReader::new(File::open(file).unwrap());
         let mut module = ptmf::read_mod(&mut reader, false).unwrap();