EBML: Add properties test

lofty/src/ebml/mod.rs

@@ -9,7 +9,7 @@ use lofty_attr::LoftyFile;
 
 // Exports
 
-pub use properties::EbmlProperties;
+pub use properties::*;
 pub use tag::*;
 pub use vint::*;
 

lofty/src/ebml/properties.rs

@@ -1,5 +1,8 @@
 use crate::properties::FileProperties;
 
+/// Properties from the EBML header
+///
+/// These are present for all EBML formats.
 #[derive(Debug, Clone, PartialEq, Default)]
 pub struct EbmlHeaderProperties {
 	pub(crate) version: u64,
@@ -48,6 +51,7 @@ impl EbmlHeaderProperties {
 	}
 }
 
+/// An EBML DocType extension
 #[derive(Debug, Clone, PartialEq, Default)]
 pub struct EbmlExtension {
 	pub(crate) name: String,
@@ -66,6 +70,7 @@ impl EbmlExtension {
 	}
 }
 
+/// Information about a segment
 #[derive(Debug, Clone, PartialEq)]
 pub struct SegmentInfo {
 	pub(crate) timestamp_scale: u64,
@@ -107,6 +112,7 @@ impl Default for SegmentInfo {
 	}
 }
 
+/// A full descriptor for an audio track
 #[derive(Debug, Clone, PartialEq, Default)]
 pub struct AudioTrackDescriptor {
 	pub(crate) number: u64,
@@ -161,6 +167,7 @@ impl AudioTrackDescriptor {
 	}
 }
 
+/// Settings for an audio track
 #[derive(Debug, Clone, PartialEq, Default)]
 pub struct AudioTrackSettings {
 	pub(crate) sampling_frequency: u32,
@@ -199,6 +206,8 @@ impl AudioTrackSettings {
 	}
 }
 
+/// A rarely-used decoder hint that the file must be de-emphasized
+#[allow(missing_docs)]
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub enum EbmlAudioTrackEmphasis {
 	None = 0,

lofty/src/properties/tests.rs

@@ -1,6 +1,10 @@
 use crate::aac::{AACProperties, AacFile};
 use crate::ape::{ApeFile, ApeProperties};
 use crate::config::ParseOptions;
+use crate::ebml::{
+	AudioTrackDescriptor, AudioTrackSettings, EbmlFile, EbmlHeaderProperties, EbmlProperties,
+	SegmentInfo,
+};
 use crate::file::AudioFile;
 use crate::flac::{FlacFile, FlacProperties};
 use crate::iff::aiff::{AiffFile, AiffProperties};
@@ -67,6 +71,42 @@ const FLAC_PROPERTIES: FlacProperties = FlacProperties {
 	signature: 164_506_065_180_489_231_127_156_351_872_182_799_315,
 };
 
+#[allow(non_snake_case)]
+fn MKA_PROPERTIES() -> EbmlProperties {
+	EbmlProperties {
+		header: EbmlHeaderProperties {
+			version: 1,
+			read_version: 1,
+			max_id_length: 4,
+			max_size_length: 8,
+			doc_type: String::from("matroska"),
+			doc_type_version: 4,
+			doc_type_read_version: 0,
+		},
+		extensions: Vec::new(),
+		segment_info: SegmentInfo {
+			timestamp_scale: 1000000,
+			muxing_app: String::from("Lavf60.3.100"),
+			writing_app: String::from("Lavf60.3.100"),
+		},
+		audio_tracks: vec![AudioTrackDescriptor {
+			number: 0,
+			uid: 0,
+			language: String::new(),
+			default_duration: 0,
+			codec_id: String::new(),
+			codec_private: vec![],
+			settings: AudioTrackSettings {
+				sampling_frequency: 0,
+				output_sampling_frequency: 0,
+				channels: 0,
+				bit_depth: None,
+				emphasis: None,
+			},
+		}],
+	}
+}
+
 const MP1_PROPERTIES: MpegProperties = MpegProperties {
 	version: MpegVersion::V1,
 	layer: Layer::Layer1,
@@ -325,6 +365,14 @@ fn flac_properties() {
 	)
 }
 
+#[test_log::test]
+fn mka_properties() {
+	assert_eq!(
+		get_properties::<EbmlFile>("tests/files/assets/minimal/full_test.mka"),
+		MKA_PROPERTIES()
+	);
+}
+
 #[test_log::test]
 fn mp1_properties() {
 	assert_eq!(