WebAudio: decodeAudioData detaches ArrayBuffer

Category: Multimedia
Type: New or changed feature
Status: Enabled by default (Chrome 59)
Intent stage: None

Summary

According to the spec, decodeAudioData detaches the given ArrayBuffer before decoding. This means that the ArrayBuffer no longer has any contents and can't be reused or examined. If it's important to keep the data, user ArrayBuffer.slice(0) to make a copy for decodeAudioData.

Standards & signals

Specification: http://webaudio.github.io/web-audio-api/
Firefox: Shipped/Shipping
Safari: No signal
Web developers: No signals
Tracking bug: http://crbug.com/704679

Docs: https://webaudio.github.io/web-audio-api/#widl-BaseAudioContext-decodeAudioData-Promise-AudioBuffer--ArrayBuffer-audioData-DecodeSuccessCallback-successCallback-DecodeErrorCallback-errorCallback

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