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fix initial filling out of tempo bars|beats map after loading from XML by extending it (at least) to the last tempo/meter metric

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git-svn-id: svn://localhost/ardour2/branches/3.0@11255 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2012-01-17 22:32:25 +00:00
parent 7fcfe672c4
commit 4b95a7912a
1 changed files with 36 additions and 10 deletions
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42
libs/ardour/tempo.cc
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@ -750,12 +750,11 @@ TempoMap::recompute_map (bool reassign_tempo_bbt, framepos_t end)
if (end < 0) {
if (_map.empty()) {
/* compute 1 mins worth */
end = _frame_rate * 60;
} else {
end = _map.back().frame;
}
/* we will actually stop once we hit
the last metric.
*/
end = max_framepos;
} else {
if (!_map.empty ()) {
/* never allow the map to be shortened */
@ -896,6 +895,8 @@ TempoMap::_extend_map (TempoSection* tempo, MeterSection* meter,
double beat_frames;
framepos_t bar_start_frame;
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("Extend map to %1 from %2 = %3\n", end, current, current_frame));
if (current.beats == 1) {
bar_start_frame = current_frame;
} else {
@ -1027,6 +1028,15 @@ TempoMap::_extend_map (TempoSection* tempo, MeterSection* meter,
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("Add Beat at %1|%2 @ %3\n", current.bars, current.beats, current_frame));
_map.push_back (BBTPoint (*meter, *tempo, (framepos_t) llrint(current_frame), current.bars, current.beats));
}
if (next_metric == metrics.end()) {
/* no more metrics - we've timestamped them all, stop here */
if (end == max_framepos) {
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("stop extending map now that we've reach the end @ %1|%2 = %3\n",
current.bars, current.beats, current_frame));
break;
}
}
}
}
@ -1596,7 +1606,6 @@ TempoMap::set_state (const XMLNode& node, int /*version*/)
XMLNodeConstIterator niter;
Metrics old_metrics (metrics);
MeterSection* last_meter = 0;
metrics.clear();
nlist = node.children();
@ -1644,7 +1653,7 @@ TempoMap::set_state (const XMLNode& node, int /*version*/)
metrics.sort (cmp);
}
recompute_map (true);
recompute_map (true, -1);
}
PropertyChanged (PropertyChange ());
@ -2166,6 +2175,9 @@ TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const
assert (tempo);
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("frame %1 walk by %2 frames, start with tempo = %3 @ %4\n",
pos, distance, *((Tempo*)tempo), tempo->frame()));
Evoral::MusicalTime beats = 0;
while (distance) {
@ -2179,12 +2191,18 @@ TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const
/* Amount to subtract this time */
double const sub = min (distance, distance_to_end);
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("to reach end at %1 (end ? %2), distance= %3 sub=%4\n", end, (next_tempo == metrics.end()),
distance_to_end, sub));
/* Update */
pos += sub;
distance -= sub;
assert (tempo);
beats += sub / tempo->frames_per_beat (_frame_rate);
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("now at %1, beats = %2 distance left %3\n",
pos, beats, distance));
/* Move on if there's anything to move to */
if (next_tempo != metrics.end()) {
@ -2203,6 +2221,14 @@ TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const
break;
}
}
if (next_tempo == metrics.end()) {
DEBUG_TRACE (DEBUG::TempoMath, "no more tempo sections\n");
} else {
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("next tempo section is %1 @ %2\n",
**next_tempo, (*next_tempo)->frame()));
}
}
assert (tempo);
}