46462135

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Committed by Benjamin Russell

Commit Message

Merge branch 'release/v5.1.0'

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70.37

/src/aac/aacFile.ts

import AacAudioHeader from "./aacAudioHeader";
import AacFileSettings from "./aacFileSettings";
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 File} to provide tagging and properties for ADTS AAC audio files.
 * @remarks
 *     A {@link Id3v1Tag} and {@link Id3v2Tag} will be added automatically to any file
 *     that doesn't contain one. This change does not affect the file until it is saved and can be
 *     reversed using the following method:
 *     `file.removeTags(file.tagTypes & ~file.tagTypesOnDisk);`
 */
export default class AacFile extends SandwichFile {
    private static readonly DEFAULT_TAG_LOCATION_MAPPING = new Map<TagTypes, () => boolean>([
        [TagTypes.Ape, () => AacFileSettings.preferApeTagAtFileEnd],
        [TagTypes.Id3v1, () => true],
        [TagTypes.Id3v2, () => AacFileSettings.preferId3v2TagAtFileEnd]
    ]);

    /** @inheritDoc */
    public constructor(file: IFileAbstraction|string, propertiesStyle: ReadStyle) {
        super(file, propertiesStyle, AacFile.DEFAULT_TAG_LOCATION_MAPPING, AacFileSettings.defaultTagTypes);
    }

    protected readProperties(readStyle: ReadStyle): Properties {
        // Skip if we're not reading the properties
        if (!NumberUtils.hasFlag(readStyle, ReadStyle.Average)) {
            return undefined;
        }

        // Only search the first 16k before giving up
        const firstHeader = AacAudioHeader.find(this, this.mediaStartPosition, 0x4000);
        if (!firstHeader) {
            throw new CorruptFileError("ADTS audio header not found");
        }

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

// /////////////////////////////////////////////////////////////////////////
// Register the file type
[
    "taglib/aac",
    "audio/aac"
].forEach((mt) => File.addFileType(mt, AacFile));

1	import AacAudioHeader from "./aacAudioHeader";	1✔
2	import AacFileSettings from "./aacFileSettings";	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 File} to provide tagging and properties for ADTS AAC audio files.
13	* @remarks
14	* A {@link Id3v1Tag} and {@link Id3v2Tag} will be added automatically to any file
15	* that doesn't contain one. This change does not affect the file until it is saved and can be
16	* reversed using the following method:
17	* `file.removeTags(file.tagTypes & ~file.tagTypesOnDisk);`
18	*/
19	export default class AacFile extends SandwichFile {	1✔
20	private static readonly DEFAULT_TAG_LOCATION_MAPPING = new Map<TagTypes, () => boolean>([	1✔
21	[TagTypes.Ape, () => AacFileSettings.preferApeTagAtFileEnd],	2✔
22	[TagTypes.Id3v1, () => true],	1✔
23	[TagTypes.Id3v2, () => AacFileSettings.preferId3v2TagAtFileEnd]	2✔
24	]);
25
26	/** @inheritDoc */
27	public constructor(file: IFileAbstraction\|string, propertiesStyle: ReadStyle) {
28	super(file, propertiesStyle, AacFile.DEFAULT_TAG_LOCATION_MAPPING, AacFileSettings.defaultTagTypes);	3✔
29	}
30
31	protected readProperties(readStyle: ReadStyle): Properties {
32	// Skip if we're not reading the properties
33	if (!NumberUtils.hasFlag(readStyle, ReadStyle.Average)) {	3!
34	return undefined;	3✔
35	}
36
37	// Only search the first 16k before giving up
38	const firstHeader = AacAudioHeader.find(this, this.mediaStartPosition, 0x4000);	×
39	if (!firstHeader) {	×
40	throw new CorruptFileError("ADTS audio header not found");	×
41	}
42
43	firstHeader.streamLength = this.mediaEndPosition - this.mediaStartPosition;	×
44	return new Properties(firstHeader.durationMilliseconds, [firstHeader]);	×
45	}
46	}
47
48	// /////////////////////////////////////////////////////////////////////////
49	// Register the file type
50	[	1✔
51	"taglib/aac",
52	"audio/aac"
53	].forEach((mt) => File.addFileType(mt, AacFile));	2✔

benrr101 / node-taglib-sharp / 46462135

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