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MCP: correct display of timecode

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git-svn-id: svn://localhost/ardour2/branches/3.0@12484 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis
2012-05-29 23:44:34 +00:00
parent 1491787cfb
commit 28aed9e0d1
1 changed files with 13 additions and 16 deletions
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29
libs/surfaces/mackie/mackie_control_protocol.cc
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@@ -726,27 +726,24 @@ string
MackieControlProtocol::format_bbt_timecode (framepos_t now_frame)
{
Timecode::BBT_Time bbt_time;
session->bbt_time (now_frame, bbt_time);
// According to the Logic docs
// digits: 888/88/88/888
// BBT mode: Bars/Beats/Subdivisions/Ticks
// The Mackie protocol spec is built around a BBT time display of
//
// digits: 888/88/88/888
// semantics: BBB/bb/ss/ttt
//
// The third field is "subdivisions" which is a concept found in Logic
// but not present in Ardour. Instead Ardour displays a 4 digit tick
// count, which we need to spread across the 5 digits of ss/ttt.
ostringstream os;
os << setw(3) << setfill('0') << bbt_time.bars;
os << setw(2) << setfill('0') << bbt_time.beats;
// figure out subdivisions per beat
const ARDOUR::Meter & meter = session->tempo_map().meter_at (now_frame);
int subdiv = 2;
if (meter.note_divisor() == 8 && (meter.divisions_per_bar() == 12.0 || meter.divisions_per_bar() == 9.0 || meter.divisions_per_bar() == 6.0)) {
subdiv = 3;
}
uint32_t subdivisions = bbt_time.ticks / uint32_t (Timecode::BBT_Time::ticks_per_beat / subdiv);
uint32_t ticks = bbt_time.ticks % uint32_t (Timecode::BBT_Time::ticks_per_beat / subdiv);
os << setw(2) << setfill('0') << subdivisions + 1;
os << setw(3) << setfill('0') << ticks;
os << setw(2) << setfill('0') << bbt_time.ticks / 1000;
os << setw(3) << setfill('0') << bbt_time.ticks % 1000;
return os.str();
}