46462135

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Committed by Benjamin Russell

Commit Message

Merge branch 'release/v5.1.0'

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3096 of 3788 branches covered (81.73%)

Branch coverage included in aggregate %.

2171 of 2171 new or added lines in 47 files covered. (100.0%)

25320 of 26463 relevant lines covered (95.68%)

437.0 hits per line

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70.37

/src/mpeg/mpegAudioFile.ts

import MpegAudioFileSettings from "./mpegAudioFileSettings";
import MpegAudioHeader from "./mpegAudioHeader";
import SandwichFile from "../sandwich/sandwichFile";
import {CorruptFileError} from "../errors";
import {File, ReadStyle} from "../file";
import {IFileAbstraction} from "../fileAbstraction";
import {Properties} from "../properties";
import {TagTypes} from "../tag";
import {NumberUtils} from "../utils";

/**
 * This class extends {@link SandwichFile} to provide tagging and properties support for
 * MPEG-1, MPEG-2, and MPEG-2.5 non-containerized audio files.
 */
export default class MpegAudioFile extends SandwichFile {
    private static readonly DEFAULT_TAG_LOCATION_MAPPING = new Map<TagTypes, () => boolean>([
        [TagTypes.Ape, () => MpegAudioFileSettings.preferApeTagAtFileEnd],
        [TagTypes.Id3v1, () => true],
        [TagTypes.Id3v2, () => MpegAudioFileSettings.preferId3v2TagAtFileEnd]
    ]);

    private _firstHeader: MpegAudioHeader;

    public constructor(file: IFileAbstraction|string, propertiesStyle: ReadStyle) {
        super(file, propertiesStyle, MpegAudioFile.DEFAULT_TAG_LOCATION_MAPPING, MpegAudioFileSettings.defaultTagTypes);
    }

    protected readProperties(readStyle: ReadStyle): Properties {
        if (!NumberUtils.hasFlag(readStyle, ReadStyle.Average)) {
            return undefined;
        }

        // @TODO: if readStyle is higher than average, scan the entire file to accurately calculate
        //    the duration.

        // Skip if we're not reading the properties
        this._firstHeader = MpegAudioHeader.find(this, this.mediaStartPosition, 0x4000);
        if (!this._firstHeader) {
            throw new CorruptFileError("MPEG audio header not found");
        }

        this._firstHeader.streamLength = this.mediaEndPosition - this.mediaStartPosition;
        return new Properties(this._firstHeader.durationMilliseconds, [this._firstHeader]);
    }
}

// /////////////////////////////////////////////////////////////////////////
// Register the file type
[
    "taglib/mp3",
    "audio/x-mp3",
    "application/x-id3",
    "audio/mpeg",
    "audio/x-mpeg",
    "audio/x-mpeg-3",
    "audio/mpeg3",
    "audio/mp3",
    "taglib/m2a",
    "taglib/mp2",
    "taglib/mp1",
    "audio/x-mp2",
    "audio/x-mp1"
].forEach((mt) => File.addFileType(mt, MpegAudioFile));

1	import MpegAudioFileSettings from "./mpegAudioFileSettings";	1✔
2	import MpegAudioHeader from "./mpegAudioHeader";	1✔
3	import SandwichFile from "../sandwich/sandwichFile";	1✔
4	import {CorruptFileError} from "../errors";	1✔
5	import {File, ReadStyle} from "../file";	1✔
6	import {IFileAbstraction} from "../fileAbstraction";
7	import {Properties} from "../properties";	1✔
8	import {TagTypes} from "../tag";	1✔
9	import {NumberUtils} from "../utils";	1✔
10
11	/**
12	* This class extends {@link SandwichFile} to provide tagging and properties support for
13	* MPEG-1, MPEG-2, and MPEG-2.5 non-containerized audio files.
14	*/
15	export default class MpegAudioFile extends SandwichFile {	1✔
16	private static readonly DEFAULT_TAG_LOCATION_MAPPING = new Map<TagTypes, () => boolean>([	1✔
17	[TagTypes.Ape, () => MpegAudioFileSettings.preferApeTagAtFileEnd],	2✔
18	[TagTypes.Id3v1, () => true],	1✔
19	[TagTypes.Id3v2, () => MpegAudioFileSettings.preferId3v2TagAtFileEnd]	2✔
20	]);
21
22	private _firstHeader: MpegAudioHeader;
23
24	public constructor(file: IFileAbstraction\|string, propertiesStyle: ReadStyle) {
25	super(file, propertiesStyle, MpegAudioFile.DEFAULT_TAG_LOCATION_MAPPING, MpegAudioFileSettings.defaultTagTypes);	3✔
26	}
27
28	protected readProperties(readStyle: ReadStyle): Properties {
29	if (!NumberUtils.hasFlag(readStyle, ReadStyle.Average)) {	3!
30	return undefined;	3✔
31	}
32
33	// @TODO: if readStyle is higher than average, scan the entire file to accurately calculate
34	// the duration.
35
36	// Skip if we're not reading the properties
37	this._firstHeader = MpegAudioHeader.find(this, this.mediaStartPosition, 0x4000);	×
38	if (!this._firstHeader) {	×
39	throw new CorruptFileError("MPEG audio header not found");	×
40	}
41
42	this._firstHeader.streamLength = this.mediaEndPosition - this.mediaStartPosition;	×
43	return new Properties(this._firstHeader.durationMilliseconds, [this._firstHeader]);	×
44	}
45	}
46
47	// /////////////////////////////////////////////////////////////////////////
48	// Register the file type
49	[	1✔
50	"taglib/mp3",
51	"audio/x-mp3",
52	"application/x-id3",
53	"audio/mpeg",
54	"audio/x-mpeg",
55	"audio/x-mpeg-3",
56	"audio/mpeg3",
57	"audio/mp3",
58	"taglib/m2a",
59	"taglib/mp2",
60	"taglib/mp1",
61	"audio/x-mp2",
62	"audio/x-mp1"
63	].forEach((mt) => File.addFileType(mt, MpegAudioFile));	13✔

benrr101 / node-taglib-sharp / 46462135

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