Aligning buffers failed because the timestamps are too discontinuous
Audio output device experienced and recovered from an error but introduced latency in the process (see also gst_audio_base_sink_report_device_failure())
Samples have been flushed
New caps are set, causing renegotiotion
No discontinuity occurred
Sink was synchronized to the estimated latency (occurs during initialization)
Different possible reasons for discontinuities. This enum is useful for the custom slave method.