LoadAudioSourceFromBlob

A lightweight helper function within FluexGL DSP for decoding audio data directly from a Blob.

async function LoadAudioSourceFromBlob(blob: Blob): Promise<AudioSourceData | null>;

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About

The LoadAudioSourceFromBlob() function decodes audio data from a provided Blob object into an AudioBuffer using the Web Audio API.

This function is designed for situations where audio data is already available in memory rather than referenced by a file path or URL. Common use cases include file uploads, drag-and-drop interactions, or audio data retrieved via browser APIs such as fetch().

Internally, a temporary AudioContext is created to perform the decoding step.

Note: This function is asynchronous and must be called within an asynchronous scope.

Parameters

• blob: Blob – A Blob containing raw audio data to be decoded.

Returns (promised)

• AudioSourceData – An object containing the decoded audio data and metadata, including:
  • A unique identifier
  • A creation timestamp
  • The decoded AudioBuffer
  • The original ArrayBuffer
• null – Reserved for future error handling (currently not returned).

Error and warnings

DOMException (decodeAudioData)

If the provided Blob does not contain valid or supported audio data, the internal decodeAudioData() call may throw a DOMException.

No custom FluexGL-DSP error codes are currently emitted by this function.