MediaKeySession: generateRequest() method

The generateRequest() method of the MediaKeySession interface returns a Promise after generating a license request based on initialization data.

Syntax

generateRequest(initDataType, initData)

Parameters

initDataType

A string that specifies the format of the initData parameter. This must be one of the following values:

• "cenc": The initData parameter uses the "cenc" format.
• "keyids": The initData parameter uses the "keyids" format.
• "webm": The initData parameter uses the "webm" format.

initData

Initialization data for the request, in the format specified by initDataType. It is an instance of any of the following types:

• ArrayBuffer
• DataView
• TypedArray

Return value

A Promise.

Exceptions

TypeError

Raised if initDataType is an empty string, if initData is an empty array, or if the provided initData is not valid according to the specified initDataType.

NotSupportedError DOMException

Raised if the Key System implementation associated with the MediaKeySession object does not support the provided initDataType, if the sanitized initialization data is empty, or if the sanitized initialization data is not supported by the content decryption module (CDM).

QuotaExceededError

Raised if the operation fails due to a lack of resources on the user agent or CDM.

InvalidStateError DOMException

Raised if the MediaKeySession object is in a closing or closed state, or if it has already been initialized.

Specifications

Browser compatibility