add Static/StreamingSoundData::unsliced_duration (#109)

* add total duration

* add tests for total duration

* rename total duration as unsliced duration

crates/kira/src/sound/static_sound/data.rs

@@ -313,6 +313,12 @@ impl StaticSoundData {
 		Duration::from_secs_f64(self.num_frames() as f64 / self.sample_rate as f64)
 	}
 
+	/// Returns the total duration of the audio, regardless of its slice.
+	#[must_use]
+	pub fn unsliced_duration(&self) -> Duration {
+		Duration::from_secs_f64(self.frames.len() as f64 / self.sample_rate as f64)
+	}
+
 	/// Returns the nth [`Frame`] of audio in the [`StaticSoundData`].
 	///
 	/// If [`StaticSoundData::slice`] is `Some`, this will behave as if the [`StaticSoundData`]

crates/kira/src/sound/static_sound/data/test.rs

@@ -15,6 +15,17 @@ fn duration() {
 	assert_eq!(static_sound.duration(), Duration::from_secs(4));
 }
 
+#[test]
+fn unsliced_duration() {
+	let static_sound = StaticSoundData {
+		sample_rate: 1,
+		frames: Arc::new([Frame::from_mono(0.0); 4]),
+		settings: Default::default(),
+		slice: Some((2, 3)),
+	};
+	assert_eq!(static_sound.unsliced_duration(), Duration::from_secs(4));
+}
+
 #[test]
 fn sliced_duration() {
 	let static_sound = StaticSoundData {

crates/kira/src/sound/streaming/data.rs

@@ -291,6 +291,14 @@ impl<Error: Send> StreamingSoundData<Error> {
 		Duration::from_secs_f64(self.num_frames() as f64 / self.decoder.sample_rate() as f64)
 	}
 
+	/// Returns the total duration of the audio, regardless of its slice.
+	#[must_use]
+	pub fn unsliced_duration(&self) -> Duration {
+		Duration::from_secs_f64(
+			self.decoder.num_frames() as f64 / self.decoder.sample_rate() as f64,
+		)
+	}
+
 	/**
 	Sets the portion of the audio this [`StreamingSoundData`] represents.
 	*/

crates/kira/src/sound/streaming/data/test.rs

@@ -15,6 +15,16 @@ fn duration() {
 	assert_eq!(sound.duration(), Duration::from_secs(4));
 }
 
+#[test]
+fn unsliced_duration() {
+	let sound = StreamingSoundData {
+		decoder: Box::new(MockDecoder::new(vec![Frame::from_mono(0.5); 4])),
+		settings: Default::default(),
+		slice: Some((2, 3)),
+	};
+	assert_eq!(sound.unsliced_duration(), Duration::from_secs(4));
+}
+
 #[test]
 fn sliced_duration() {
 	let sound = StreamingSoundData {