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pw-cat: fix tempo changes

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Use time in seconds as event timestamp.
Apply tempo from the new events, keep track of elapsed time and
time since tempo change to get the right time.
Skip metadata midi in pw-cat.
This commit is contained in:
Wim Taymans 2020-02-18 16:13:35 +01:00
parent fe616e38d8
commit b6a6d1f0bb
3 changed files with 12 additions and 7 deletions
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4
src/tools/midifile.c
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@ -140,7 +140,7 @@ static int peek_event(struct midi_file *mf, struct midi_track *tr, struct midi_e
return res < 0 ? res : -EIO;
event->track = tr;
event->tick = tr->tick;
event->sec = mf->tick_sec + ((tr->tick - mf->tick_start) * (double)mf->tempo) / (1000000.0 * mf->division);
start = event->offset = tr->offset;
status = buffer[0];
@ -183,6 +183,8 @@ static int peek_event(struct midi_file *mf, struct midi_track *tr, struct midi_e
if ((res = mf->events->read(mf->data, tr->start + tr->offset, buffer, 3)) != 3)
return res < 0 ? res : -EIO;
mf->tick_sec = event->sec;
mf->tick_start = tr->tick;
mf->tempo = (buffer[0]<<16) | (buffer[1]<<8) | buffer[2];
break;
}