f97e1988a6
1. m_writerQueue is now shared by recorder control and asset writer to ensure it lives long enough. 2. m_delegate->method() calls from async block can be dangerous, since by the time this block is actually executed, delegate can be deleted already. This fix uses Q_INVOKABLE and invokeMethod with QueuedConnection instead. 3. -finishWritingWithCompletionHandler: is async and when the block finally gets executed, lock and 'if aborted' test are still needed. 4. Simplify the logic and reduce locking. Change-Id: If23daf2fe22043244033427a7f6517a0fe3f23d1 Reviewed-by: Yoann Lopes <yoann.lopes@qt.io>