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Merge branch 'main' of github.com:qualabs/common-media-library into f…
…eature/cea-608-708 Signed-off-by: hernan <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| import { DecodedId3Frame } from '../DecodedId3Frame.js'; | ||
| import { RawId3Frame } from './RawFrame.js'; | ||
| import { toUint8 } from './utf8.js'; | ||
| import { toArrayBuffer } from './toArrayBuffer.js'; | ||
| import { utf8ArrayToStr } from '../../utils.js'; | ||
|
|
||
| interface MetadataFrame { | ||
| key: string; | ||
| description: string; | ||
| data: string | ArrayBuffer; | ||
| mimeType: string | null; | ||
| pictureType: number | null; | ||
| } | ||
|
|
||
| export function decodeId3ImageFrame( | ||
| frame: RawId3Frame | ||
| ): DecodedId3Frame<string | ArrayBuffer> | undefined { | ||
| const metadataFrame: MetadataFrame = { | ||
| key: frame.type, | ||
| description: '', | ||
| data: '', | ||
| mimeType: null, | ||
| pictureType: null, | ||
| }; | ||
|
|
||
| const utf8Encoding = 0x03; | ||
|
|
||
| if (frame.size < 2) { | ||
| return undefined; | ||
| } | ||
| if (frame.data[0] !== utf8Encoding) { | ||
| console.log('Ignore frame with unrecognized character ' + 'encoding'); | ||
| return undefined; | ||
| } | ||
|
|
||
| const mimeTypeEndIndex = frame.data.subarray(1).indexOf(0); | ||
| if (mimeTypeEndIndex === -1) { | ||
| return undefined; | ||
| } | ||
| const mimeType = utf8ArrayToStr(toUint8(frame.data, 1, mimeTypeEndIndex)); | ||
| const pictureType = frame.data[2 + mimeTypeEndIndex]; | ||
| const descriptionEndIndex = frame.data | ||
| .subarray(3 + mimeTypeEndIndex) | ||
| .indexOf(0); | ||
| if (descriptionEndIndex === -1) { | ||
| return undefined; | ||
| } | ||
| const description = utf8ArrayToStr( | ||
| toUint8(frame.data, 3 + mimeTypeEndIndex, descriptionEndIndex) | ||
| ); | ||
|
|
||
| let data; | ||
| if (mimeType === '-->') { | ||
| data = utf8ArrayToStr( | ||
| toUint8(frame.data, 4 + mimeTypeEndIndex + descriptionEndIndex) | ||
| ); | ||
| } | ||
| else { | ||
| data = toArrayBuffer( | ||
| frame.data.subarray(4 + mimeTypeEndIndex + descriptionEndIndex) | ||
| ); | ||
| } | ||
|
|
||
| metadataFrame.mimeType = mimeType; | ||
| metadataFrame.pictureType = pictureType; | ||
| metadataFrame.description = description; | ||
| metadataFrame.data = data; | ||
| return metadataFrame; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -45,6 +45,5 @@ export function isId3Header(data: Uint8Array, offset: number): boolean { | |
| } | ||
| } | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| type TypedArray = | ||
| | Int8Array | ||
| | Uint8Array | ||
| | Int16Array | ||
| | Uint16Array | ||
| | Int32Array | ||
| | Uint32Array | ||
| | Float32Array | ||
| | Float64Array | ||
| | Uint8ClampedArray; | ||
|
|
||
| export function toArrayBuffer(view: ArrayBuffer | TypedArray): ArrayBuffer { | ||
| if (view instanceof ArrayBuffer) { | ||
| return view; | ||
| } | ||
| else { | ||
| if (view.byteOffset == 0 && view.byteLength == view.buffer.byteLength) { | ||
| // This is a TypedArray over the whole buffer. | ||
| return view.buffer; | ||
| } | ||
| // This is a 'view' on the buffer. Create a new buffer that only contains | ||
| // the data. Note that since this isn't an ArrayBuffer, the 'new' call | ||
| // will allocate a new buffer to hold the copy. | ||
| return new Uint8Array(view).buffer; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| import { isArrayBufferView } from 'util/types'; | ||
|
|
||
| export function toUint8( | ||
| data: BufferSource, | ||
| offset: number = 0, | ||
| length: number = Infinity | ||
| ) { | ||
| return view(data, offset, length, Uint8Array); | ||
| } | ||
|
|
||
| function view<T extends ArrayBufferView>( | ||
| data: BufferSource, | ||
| offset: number, | ||
| length: number, | ||
| Type: { new (buffer: ArrayBuffer, byteOffset: number, length: number): T } | ||
| ): T { | ||
| const buffer = unsafeGetArrayBuffer(data); | ||
| let bytesPerElement: any = 1; | ||
| if ('BYTES_PER_ELEMENT' in Type) { | ||
| bytesPerElement = Type.BYTES_PER_ELEMENT; | ||
| } | ||
| // Absolute end of the |data| view within |buffer|. | ||
| const dataOffset = isArrayBufferView(data) ? data.byteOffset : 0; | ||
| const dataEnd = ((dataOffset) + data.byteLength) / bytesPerElement; | ||
| // Absolute start of the result within |buffer|. | ||
| const rawStart = ((dataOffset) + offset) / bytesPerElement; | ||
| const start = Math.floor(Math.max(0, Math.min(rawStart, dataEnd))); | ||
| // Absolute end of the result within |buffer|. | ||
| const end = Math.floor(Math.min(start + Math.max(length, 0), dataEnd)); | ||
| return new Type(buffer, start, end - start); | ||
| } | ||
|
|
||
| function unsafeGetArrayBuffer(view: BufferSource) { | ||
| if (view instanceof ArrayBuffer) { | ||
| return view; | ||
| } | ||
| else { | ||
| return view.buffer; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,53 +1,119 @@ | ||
| import { getId3Frames } from '@svta/common-media-library'; | ||
| import { deepEqual } from 'node:assert'; | ||
| import { deepEqual, deepStrictEqual } from 'node:assert'; | ||
| import { describe, it } from 'node:test'; | ||
| import { DATA, DATA_BYTES, DATA_UINT8 } from './data/DATA.js'; | ||
| import { INFO, INFO_BYTES } from './data/INFO.js'; | ||
| import { createId3 } from './data/createId3.js'; | ||
| import { | ||
| generateId3, | ||
| generateId3Frame, | ||
| } from '../utils/id3/util/id3Generator.js'; | ||
| import { toArrayBuffer } from '../../src/id3/util/toArrayBuffer.js'; | ||
|
|
||
| describe('getId3Frames', () => { | ||
| it('no valid data produces empty output', () => { | ||
| deepStrictEqual(getId3Frames(new Uint8Array([])), []); | ||
| }); | ||
|
|
||
| it('parse an APIC frame with image data', () => { | ||
| const apicValue = new Uint8Array([ | ||
| 3, 105, 109, 97, 103, 101, 47, 106, 112, 101, 103, 0, 3, 83, 104, 97, 107, | ||
| 97, 0, 1, 2, 3, | ||
| ]); | ||
| const apicFrame = generateId3Frame('APIC', apicValue); | ||
| const apicID3 = generateId3(apicFrame); | ||
| const expectedID3 = [ | ||
| { | ||
| key: 'APIC', | ||
| mimeType: 'image/jpeg', | ||
| pictureType: 3, | ||
| description: 'Shaka', | ||
| data: toArrayBuffer(new Uint8Array([1, 2, 3])), | ||
| }, | ||
| ]; | ||
| deepStrictEqual(getId3Frames(apicID3), expectedID3); | ||
| }); | ||
|
|
||
| it('parse an APIC frame with image URL', () => { | ||
| const apicValue = new Uint8Array([ | ||
| 3, 45, 45, 62, 0, 3, 83, 104, 97, 107, 97, 0, 103, 111, 111, 103, 108, | ||
| 101, 46, 99, 111, 109, | ||
| ]); | ||
| const apicFrame = generateId3Frame('APIC', apicValue); | ||
| const apicID3 = generateId3(apicFrame); | ||
| const expectedID3 = [ | ||
| { | ||
| key: 'APIC', | ||
| mimeType: '-->', | ||
| pictureType: 3, | ||
| description: 'Shaka', | ||
| data: 'google.com', | ||
| }, | ||
| ]; | ||
| deepStrictEqual(getId3Frames(apicID3), expectedID3); | ||
| }); | ||
|
|
||
| it('parses PRIV frames', () => { | ||
| const id3 = createId3('PRIV', new Uint8Array([...INFO_BYTES, 0x00, ...DATA_BYTES])); | ||
| deepEqual(getId3Frames(id3), [{ | ||
| key: 'PRIV', | ||
| info: INFO, | ||
| data: DATA_UINT8.buffer, | ||
| }]); | ||
| const id3 = createId3( | ||
| 'PRIV', | ||
| new Uint8Array([...INFO_BYTES, 0x00, ...DATA_BYTES]) | ||
| ); | ||
| deepEqual(getId3Frames(id3), [ | ||
| { | ||
| key: 'PRIV', | ||
| info: INFO, | ||
| data: DATA_UINT8.buffer, | ||
| }, | ||
| ]); | ||
| }); | ||
|
|
||
| it('parses TXXX frames', () => { | ||
| const id3 = createId3('TXXX', new Uint8Array([0x03, ...INFO_BYTES, 0x00, ...DATA_BYTES])); | ||
| deepEqual(getId3Frames(id3), [{ | ||
| key: 'TXXX', | ||
| info: INFO, | ||
| data: DATA, | ||
| }]); | ||
| const id3 = createId3( | ||
| 'TXXX', | ||
| new Uint8Array([0x03, ...INFO_BYTES, 0x00, ...DATA_BYTES]) | ||
| ); | ||
| deepEqual(getId3Frames(id3), [ | ||
| { | ||
| key: 'TXXX', | ||
| info: INFO, | ||
| data: DATA, | ||
| }, | ||
| ]); | ||
| }); | ||
|
|
||
| it('parses WXXX frames', () => { | ||
| const id3 = createId3('WXXX', new Uint8Array([0x03, ...INFO_BYTES, 0x00, ...DATA_BYTES])); | ||
| deepEqual(getId3Frames(id3), [{ | ||
| key: 'WXXX', | ||
| info: INFO, | ||
| data: DATA, | ||
| }]); | ||
| const id3 = createId3( | ||
| 'WXXX', | ||
| new Uint8Array([0x03, ...INFO_BYTES, 0x00, ...DATA_BYTES]) | ||
| ); | ||
| deepEqual(getId3Frames(id3), [ | ||
| { | ||
| key: 'WXXX', | ||
| info: INFO, | ||
| data: DATA, | ||
| }, | ||
| ]); | ||
| }); | ||
|
|
||
| it('parses TCOP frames', () => { | ||
| const id3 = createId3('TCOP', new Uint8Array([0x03, ...INFO_BYTES])); | ||
| deepEqual(getId3Frames(id3), [{ | ||
| key: 'TCOP', | ||
| info: '', | ||
| data: INFO, | ||
| }]); | ||
| deepEqual(getId3Frames(id3), [ | ||
| { | ||
| key: 'TCOP', | ||
| info: '', | ||
| data: INFO, | ||
| }, | ||
| ]); | ||
| }); | ||
|
|
||
| it('parses WCOP frames', () => { | ||
| const id3 = createId3('WCOP', new Uint8Array([...INFO_BYTES])); | ||
| deepEqual(getId3Frames(id3), [{ | ||
| key: 'WCOP', | ||
| info: '', | ||
| data: INFO, | ||
| }]); | ||
| deepEqual(getId3Frames(id3), [ | ||
| { | ||
| key: 'WCOP', | ||
| info: '', | ||
| data: INFO, | ||
| }, | ||
| ]); | ||
| }); | ||
| }); |
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