private double AnalyzeBpm(double from, double to)
{
if (_channel == 0)
{
return(-1.0);
}
return(BassFx.BPMDecodeGet(_channel, from, to, 0,
BassFlags.FxBpmBackground | BassFlags.FXBpmMult2 | BassFlags.FxFreeSource, GetBPM_ProgressCallback));
}
void DecodingBPM(bool newStream, double startSec, double endSec, string fp)
{
if (newStream)
{
// open the same file as played but for bpm decoding detection
_bpmchan = Bass.CreateStream(fp, 0, 0, BassFlags.Decode);
if (_bpmchan == 0)
{
_bpmchan = Bass.MusicLoad(fp, 0, 0, BassFlags.Decode | BassFlags.Prescan, 0);
}
}
// detect bpm in background and return progress in GetBPM_ProgressCallback function
if (_bpmchan != 0)
{
Bpm = BassFx.BPMDecodeGet(_bpmchan, startSec, endSec, 0, BassFlags.FxBpmBackground | BassFlags.FXBpmMult2 | BassFlags.FxFreeSource, _progressProcedure);
}
}