private void ChangeTempo(double newTempo)
{
if (Math.Abs(Tempo - newTempo) < double.Epsilon)
{
return;
}
var oldTempo = Tempo;
TempoChanged?.Invoke(this, new TempoChangedEventArgs(oldTempo, newTempo));
Tempo = newTempo;
RecalcTickTime();
}
public void OnTempoChanged(int tempo)
{
TempoChanged?.Invoke(this, new TempoChangedEventArgs {
TempoBPM = tempo
});
}
/// <summary>
/// performs a single song-position-advance
/// </summary>
void TrackStepExecute()
{
trackstepWait = 0;
if (trackstepPosition > tfx.SongEndPositions[songNo] || trackstepPosition >= tfx.Tracksteps.Length)
{
Paula.Reset();
if (trackstepPosition < tfx.Tracksteps.Length)
{
TrackstepPositionChanged?.Invoke(this, EventArgs.Empty);
}
SongEnded?.Invoke(this, EventArgs.Empty);
trackstepWait = 1;
stopped = true;
return;
}
if (tfx.Tracksteps[trackstepPosition][0] == 0xEFFE)
{
var line = tfx.Tracksteps[trackstepPosition];
switch (line[1])
{
case 0: // stop the player
stopped = true;
break;
case 1: // Play a section starting at position and ending here times
// times. If times is 0000 then section will repeat forever.
// line+4=position, line+6=times
int position = line[2];
int times = line[3];
trackstepPosition = position; // TD: error-check, count loops
break;
case 2: // set the tempo
// TD
break;
case 3: // start a master volume slide (?)
if (line[3] == 0xEE)
{
--tempoNumber;
//Frequency = 14;
TempoChanged?.Invoke(this, EventArgs.Empty);
}
else if (line[3] == 0x10)
{
//Frequency = 30;
TempoChanged?.Invoke(this, EventArgs.Empty);
}
break;
case 4:
break;
default:
break;
}
}
else
{
for (int i = 0; i < 8; ++i)
{
var track = tracks[i];
var d = tfx.Tracksteps[trackstepPosition][i];
int stepPattern = d >> 8;
int stepTranspose = (sbyte)(d & 0xFF);
// init pattern
track.PatternPC = 0;
track.NumWait = 0;
track.NumPatternLoop = 0;
// TD: handle 0xFE correctly!
if (stepPattern >= 0x80)
{
if (stepPattern != 0x80)
{
track.PatternNo = -1;
}
}
else
{
Log("starting pattern " + track.PatternNo + " in tick " + tickCounter);
track.PatternNo = stepPattern;
track.Transpose = stepTranspose;
}
}
trackstepWait = 1;
}
TrackstepPositionChanged?.Invoke(this, EventArgs.Empty);
++trackstepPosition;
}
public void SelectFile(string fileName)
{
InvalidFile = false;
InvalidFileChanged?.Invoke(this, EventArgs.Empty);
if (Playing)
{
Stop();
}
_source = null;
string extension = Path.GetExtension(fileName).ToLower();
try
{
if (extension == ".mp3")
{
_source = new Mp3FileReader(fileName);
}
else if (extension == ".wav")
{
_source = new WaveFileReader(fileName);
}
else if ((extension == ".fla") || (extension == ".flac"))
{
_source = new FlacReader(fileName);
}
}
catch
{
InvalidFile = true;
InvalidFileChanged?.Invoke(this, EventArgs.Empty);
_source = null;
}
TotalTimeChanged?.Invoke(this, EventArgs.Empty);
if (_source == null)
{
return;
}
_stretcher = new RubberBandWaveStream(_source);
_stretcher.SourceRead +=
(sender, e) =>
{
CurrentTimeChanged?.Invoke(this, e);
};
_stretcher.EndOfStream +=
(sender, e) =>
{
ReachedEnd?.Invoke(this, e);
Stop();
};
TempoChanged?.Invoke(this, EventArgs.Empty);
CurrentTimeChanged?.Invoke(this, EventArgs.Empty);
_waveOut.Init(_stretcher);
}
