timebase master issue

[jhammen]

seeing a strange timebase master BBT calculation when acting as timebase master via -T switch

jack is configured 44100 128/2

tempo map:

song: 81 4/4 105

running "jack_showtime" to print current timebase information - note BBT goes from 2|4|1910 to 3|5|0000 then 3|1|0009, 3|1|0019 etc

partial output:

frame = 201472  frame_time = 263623781 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623785 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623789 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623794 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623798 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623802 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201472  frame_time = 263623807 usecs = 506094261891 	state: Rolling	BBT:   2|4|1910
frame = 201600  frame_time = 263623812 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623816 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623821 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623825 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623829 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623834 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623839 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623843 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623847 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623851 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623855 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623859 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623863 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623868 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623872 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623876 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623880 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623884 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623888 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623892 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623896 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623899 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623903 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623907 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623911 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623915 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623919 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623923 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623926 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623930 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623934 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201600  frame_time = 263623938 usecs = 506094264740 	state: Rolling	BBT:   3|5|0000
frame = 201728  frame_time = 263623942 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623945 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623949 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623953 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623957 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623961 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623965 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623968 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623972 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623976 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623980 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623984 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623987 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623991 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623995 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263623999 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624002 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624007 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624011 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624015 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624018 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624022 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624026 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624030 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624034 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624038 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624042 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624045 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624049 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624053 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624057 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201728  frame_time = 263624061 usecs = 506094267698 	state: Rolling	BBT:   3|1|0009
frame = 201856  frame_time = 263624065 usecs = 506094270511 	state: Rolling	BBT:   3|1|0019
frame = 201856  frame_time = 263624070 usecs = 506094270511 	state: Rolling	BBT:   3|1|0019
frame = 201856  frame_time = 263624073 usecs = 506094270511 	state: Rolling	BBT:   3|1|0019
frame = 201856  frame_time = 263624077 usecs = 506094270511 	state: Rolling	BBT:   3|1|0019
frame = 201856  frame_time = 263624081 usecs = 506094270511 	state: Rolling	BBT:   3|1|0019