bit_depth prototype

src/ape/properties.rs

@@ -25,6 +25,7 @@ impl From<ApeProperties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/iff/aiff/properties.rs

@@ -66,6 +66,7 @@ pub(super) fn read_properties(
 		overall_bitrate,
 		audio_bitrate,
 		sample_rate: Some(sample_rate),
+		bit_depth: None,
 		channels: Some(channels),
 	})
 }

src/iff/wav/properties.rs

@@ -42,6 +42,7 @@ impl From<WavProperties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/mp3/properties.rs

@@ -23,6 +23,7 @@ impl From<Mp3Properties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/mp4/properties.rs

@@ -42,6 +42,7 @@ impl From<Mp4Properties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/ogg/flac/properties.rs

@@ -32,6 +32,7 @@ where
 	let info = stream_info.read_u32::<BigEndian>()?;
 
 	let sample_rate = info >> 12;
+	let bits_per_sample = ((info >> 4) & 0b1111) + 1;
 	let channels = ((info >> 9) & 7) + 1;
 
 	// Read the remaining 32 bits of the total samples
@@ -54,6 +55,7 @@ where
 		overall_bitrate,
 		audio_bitrate,
 		sample_rate: Some(sample_rate as u32),
+		bit_depth: Some(bits_per_sample as u8),
 		channels: Some(channels as u8),
 	})
 }

src/ogg/opus/properties.rs

@@ -26,6 +26,7 @@ impl From<OpusProperties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.input_sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/ogg/vorbis/properties.rs

@@ -29,6 +29,7 @@ impl From<VorbisProperties> for FileProperties {
 			overall_bitrate: Some(input.overall_bitrate),
 			audio_bitrate: Some(input.audio_bitrate),
 			sample_rate: Some(input.sample_rate),
+			bit_depth: None,
 			channels: Some(input.channels),
 		}
 	}

src/types/properties.rs

@@ -7,6 +7,7 @@ pub struct FileProperties {
 	pub(crate) overall_bitrate: Option<u32>,
 	pub(crate) audio_bitrate: Option<u32>,
 	pub(crate) sample_rate: Option<u32>,
+	pub(crate) bit_depth: Option<u8>,
 	pub(crate) channels: Option<u8>,
 }
 
@@ -17,6 +18,7 @@ impl Default for FileProperties {
 			overall_bitrate: None,
 			audio_bitrate: None,
 			sample_rate: None,
+			bit_depth: None,
 			channels: None,
 		}
 	}
@@ -29,6 +31,7 @@ impl FileProperties {
 		overall_bitrate: Option<u32>,
 		audio_bitrate: Option<u32>,
 		sample_rate: Option<u32>,
+		bit_depth: Option<u8>,
 		channels: Option<u8>,
 	) -> Self {
 		Self {
@@ -36,6 +39,7 @@ impl FileProperties {
 			overall_bitrate,
 			audio_bitrate,
 			sample_rate,
+			bit_depth,
 			channels,
 		}
 	}
@@ -60,6 +64,11 @@ impl FileProperties {
 		self.sample_rate
 	}
 
+	/// Bits per sample (usually 16 or 24 bit)
+	pub fn bit_depth(&self) -> Option<u8> {
+		self.bit_depth
+	}
+
 	/// Channel count
 	pub fn channels(&self) -> Option<u8> {
 		self.channels

tests/properties.rs

@@ -13,6 +13,7 @@ const AIFF_PROPERTIES: FileProperties = FileProperties::new(
 	Some(1542),
 	Some(1536),
 	Some(48000),
+	None,
 	Some(2),
 );
 
@@ -24,6 +25,7 @@ const FLAC_PROPERTIES: FileProperties = FileProperties::new(
 	Some(321),
 	Some(275),
 	Some(48000),
+	None,
 	Some(2),
 );