EventTime TimeNow() {
struct timeval tvNow;
gettimeofday(&tvNow, NULL);
return EventTime(tvNow.tv_sec, tvNow.tv_usec);
}
status_t AmEventTimeView::ConstructSignatureFromTime()
{
if (!mEvent) return B_ERROR;
status_t err = B_ERROR;
// READ TRACK BLOCK
#ifdef AM_TRACE_LOCKS
printf("AmEventTimeView::ConstructSignatureFromTime() read lock\n");
#endif
const AmSong* song = ReadLock();
const AmTrack* track = song ? song->Track( mTrackRef ) : 0;
if (track) {
AmSignature sig;
if ( (err = track->GetSignature(EventTime(), sig)) == B_OK ) {
mSignature->Set(sig);
}
}
ReadUnlock( song );
// END READ TRACK BLOCK
return err;
}
status_t AmEventTimeView::SetControls()
{
if (ConstructSignatureFromTime() != B_OK) return B_ERROR;
// Set the measure value
if (mMeasureCtrl) mMeasureCtrl->SetValue( mSignature->Measure() );
// Calculate and set the beat value
AmTime time = EventTime() - mSignature->StartTime();
AmTime start = 0;
AmTime ticks = mSignature->TicksPerBeat();
int32 beat = 1;
while ( (start + ticks) <= time) {
start += ticks;
beat++;
}
// Also need to set the range of values for the beat control here.
if (mBeatCtrl) {
mBeatCtrl->SetLimits(1, mSignature->Beats() );
mBeatCtrl->SetValue(beat);
}
// Calculate and set the clock value
if (mClockCtrl) mClockCtrl->SetValue(time - start);
return B_OK;
}