Wait for promise to move out of the GST_PROMISE_RESULT_PENDING state. If promise is not in GST_PROMISE_RESULT_PENDING then it will return immediately with the current result.
the result of the promise
1.14
Wait for promise to move out of the GST_PROMISE_RESULT_PENDING state. If promise is not in GST_PROMISE_RESULT_PENDING then it will return immediately with the current result.