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Fix beat and tick calcualtion.

This commit is contained in:
Jonathan Moore Liles 2008-05-14 14:17:58 -05:00
parent 1cd36adce8
commit 558430847c
1 changed files with 10 additions and 16 deletions
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26
Timeline/Timeline.C
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@ -403,6 +403,8 @@ Timeline::render_tempomap( nframes_t start, nframes_t length, measure_line_callb
nframes_t frames_per_beat = samples_per_minute / bpm;
/* FIXME: don't we need to sort so that Time_Points always preceed Tempo_Points? */
for ( list <Sequence_Widget *>::iterator i = tempo_map.begin();
i != tempo_map.end(); ++i )
{
@ -433,21 +435,20 @@ Timeline::render_tempomap( nframes_t start, nframes_t length, measure_line_callb
}
for ( ; f < next; f += frames_per_beat )
for ( ; f < next; ++bbt.beat, f += frames_per_beat )
{
if ( ++bbt.beat == sig.beats_per_bar )
if ( bbt.beat == sig.beats_per_bar )
{
bbt.beat = 0;
++bbt.bar;
}
if ( f >= start )
if ( f + frames_per_beat >= end )
goto done;
else if ( f >= start )
{
if ( f >= end )
goto done;
/* in the zone */
if ( cb )
cb( f, bbt, arg );
}
@ -456,24 +457,17 @@ Timeline::render_tempomap( nframes_t start, nframes_t length, measure_line_callb
done:
if ( f < end )
/* no tempo points? */
return pos;
pos.frame = f;
pos.tempo = bpm;
pos.beats_per_bar = sig.beats_per_bar;
pos.beat_type = sig.beat_type;
assert( f >= end );
/* assert( f - end <= frames_per_beat ); */
/* bbt.tick = ticks_per_beat - ( ( ( f - end ) * ticks_per_beat ) / frames_per_beat ); */
assert( f < end );
/* FIXME: this this right? */
const nframes_t frames_per_tick = frames_per_beat / ticks_per_beat;
bbt.tick = ticks_per_beat - ( ( ( f - end ) / frames_per_tick ) % (nframes_t)ticks_per_beat );
bbt.tick = ( ( ( end - f ) / frames_per_tick ) % (nframes_t)ticks_per_beat );
return pos;
}