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| /* | ||
| Copyright 2022 The Matrix.org Foundation C.I.C. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| import { IEncryptedFile, MatrixClient } from "matrix-js-sdk/src/matrix"; | ||
| import { SimpleObservable } from "matrix-widget-api"; | ||
|
|
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| import { uploadFile } from "../ContentMessages"; | ||
| import { IDestroyable } from "../utils/IDestroyable"; | ||
| import { Singleflight } from "../utils/Singleflight"; | ||
| import { Playback } from "./Playback"; | ||
| import { IRecordingUpdate, RecordingState, VoiceRecording } from "./VoiceRecording"; | ||
|
|
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| export interface IUpload { | ||
| mxc?: string; // for unencrypted uploads | ||
| encrypted?: IEncryptedFile; | ||
| } | ||
|
|
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| /** | ||
| * This class can be used to record a single voice message. | ||
| */ | ||
| export class VoiceMessageRecording implements IDestroyable { | ||
| private lastUpload: IUpload; | ||
| private buffer = new Uint8Array(0); // use this.audioBuffer to access | ||
| private playback: Playback; | ||
|
|
||
| public constructor( | ||
| private matrixClient: MatrixClient, | ||
| private voiceRecording: VoiceRecording, | ||
| ) { | ||
| this.voiceRecording.onDataAvailable = this.onDataAvailable; | ||
| } | ||
|
|
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| public async start(): Promise<void> { | ||
| if (this.lastUpload || this.hasRecording) { | ||
| throw new Error("Recording already prepared"); | ||
| } | ||
|
|
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| return this.voiceRecording.start(); | ||
| } | ||
|
|
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| public async stop(): Promise<Uint8Array> { | ||
| await this.voiceRecording.stop(); | ||
| return this.audioBuffer; | ||
| } | ||
|
|
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| public on(event: string | symbol, listener: (...args: any[]) => void): this { | ||
| this.voiceRecording.on(event, listener); | ||
| return this; | ||
| } | ||
|
|
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| public off(event: string | symbol, listener: (...args: any[]) => void): this { | ||
| this.voiceRecording.off(event, listener); | ||
| return this; | ||
| } | ||
|
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| public emit(event: string, ...args: any[]): boolean { | ||
| return this.voiceRecording.emit(event, ...args); | ||
| } | ||
|
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| public get hasRecording(): boolean { | ||
| return this.buffer.length > 0; | ||
| } | ||
|
|
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| public get isRecording(): boolean { | ||
| return this.voiceRecording.isRecording; | ||
| } | ||
|
|
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| /** | ||
| * Gets a playback instance for this voice recording. Note that the playback will not | ||
| * have been prepared fully, meaning the `prepare()` function needs to be called on it. | ||
| * | ||
| * The same playback instance is returned each time. | ||
| * | ||
| * @returns {Playback} The playback instance. | ||
| */ | ||
| public getPlayback(): Playback { | ||
| this.playback = Singleflight.for(this, "playback").do(() => { | ||
| return new Playback(this.audioBuffer.buffer, this.voiceRecording.amplitudes); // cast to ArrayBuffer proper; | ||
| }); | ||
| return this.playback; | ||
| } | ||
|
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| public async upload(inRoomId: string): Promise<IUpload> { | ||
| if (!this.hasRecording) { | ||
| throw new Error("No recording available to upload"); | ||
| } | ||
|
|
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| if (this.lastUpload) return this.lastUpload; | ||
|
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| try { | ||
| this.emit(RecordingState.Uploading); | ||
| const { url: mxc, file: encrypted } = await uploadFile( | ||
| this.matrixClient, | ||
| inRoomId, | ||
| new Blob( | ||
| [this.audioBuffer], | ||
| { | ||
| type: this.contentType, | ||
| }, | ||
| ), | ||
| ); | ||
| this.lastUpload = { mxc, encrypted }; | ||
| this.emit(RecordingState.Uploaded); | ||
| } catch (e) { | ||
| this.emit(RecordingState.Ended); | ||
| throw e; | ||
| } | ||
| return this.lastUpload; | ||
| } | ||
|
|
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| public get durationSeconds(): number { | ||
| return this.voiceRecording.durationSeconds; | ||
| } | ||
|
|
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| public get contentType(): string { | ||
| return this.voiceRecording.contentType; | ||
| } | ||
|
|
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| public get contentLength(): number { | ||
| return this.buffer.length; | ||
| } | ||
|
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| public get liveData(): SimpleObservable<IRecordingUpdate> { | ||
| return this.voiceRecording.liveData; | ||
| } | ||
|
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| public get isSupported(): boolean { | ||
| return this.voiceRecording.isSupported; | ||
| } | ||
|
|
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| destroy(): void { | ||
| this.playback?.destroy(); | ||
| this.voiceRecording.destroy(); | ||
| } | ||
|
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| private onDataAvailable = (data: ArrayBuffer) => { | ||
| const buf = new Uint8Array(data); | ||
| const newBuf = new Uint8Array(this.buffer.length + buf.length); | ||
| newBuf.set(this.buffer, 0); | ||
| newBuf.set(buf, this.buffer.length); | ||
| this.buffer = newBuf; | ||
| }; | ||
|
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| private get audioBuffer(): Uint8Array { | ||
| // We need a clone of the buffer to avoid accidentally changing the position | ||
| // on the real thing. | ||
| return this.buffer.slice(0); | ||
| } | ||
| } | ||
|
|
||
| export const createVoiceMessageRecording = (matrixClient: MatrixClient) => { | ||
| return new VoiceMessageRecording(matrixClient, new VoiceRecording()); | ||
| }; |
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