kCMBufferQueueError_CannotModifyQueueFromTriggerCallback

objc2_core_media

Constant kCMBufferQueueError_CannotModifyQueueFromTriggerCallback 

Source 
pub const kCMBufferQueueError_CannotModifyQueueFromTriggerCallback: i32 = -12766;
Available on crate feature CMBufferQueue only.
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Apple’s documentation