Merge pull request #20 from tomaka/fix-samples-rate-conv

Fix samples rate converter not working when from == to

src/conversions/samples_rate.rs

@@ -74,6 +74,11 @@ impl<I> Iterator for SamplesRateConverter<I> where I: Iterator, I::Item: Sample
     type Item = I::Item;
 
     fn next(&mut self) -> Option<I::Item> {
+        // the algorithm below doesn't work if `self.from == self.to`
+        if self.from == self.to {
+            return self.input.next();
+        }
+
         if self.output_buffer.len() >= 1 {
             return Some(self.output_buffer.remove(0));
         }

src/decoder/wav.rs

@@ -116,7 +116,7 @@ fn is_wave<R>(mut data: R) -> bool where R: Read + Seek {
 impl Decoder for WavDecoder {
     fn write(&mut self) -> u64 {
         let (min, _) = self.reader.size_hint();
-        let min = cmp::min(min, 10240);     // using a minimal value so that filters get applied
+        let min = cmp::min(min, 10240);     // using a maximal value so that filters get applied
                                             // quickly
 
         if min == 0 {