public void Decode_DecodesBgm(
[Values(0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75, 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5)] byte param0,
[Values] DjmainChartType chartType)
{
// Arrange.
var subject = Resolve <IDjmainChartDecoder>();
var expectedPanning = Math.Max(0, (param0 >> 4) - 1);
var offset = Create <ushort>();
var param1 = Create <byte>();
var data = new[]
{
new DjmainChartEvent
{
Offset = offset,
Param0 = param0,
Param1 = param1
}
};
// Act.
var output = subject.Decode(data, Create <DjmainChartType>());
// Assert.
output.Events.Should().HaveCount(1);
var ev = output.Events.Single();
ev[NumericData.PlaySound].Value.Should().Be(param1 - 1);
ev[NumericData.Panning].Value.Should().Be(new BigRational(expectedPanning, 14));
}
public IChart Decode(IEnumerable <IDjmainChartEvent> events, DjmainChartType chartType)
{
return(new Chart
{
Events = DecodeEvents(events, chartType).ToList()
});
}
private IEnumerable <IEvent> DecodeEvents(IEnumerable <IDjmainChartEvent> events, DjmainChartType chartType)
{
var noteCount = true;
foreach (var ev in events)
{
var command = ev.Param0 & 0xF;
if (noteCount)
{
if (ev.Offset != 0 || command != 0)
{
noteCount = false;
}
else
{
continue;
}
}
var offset = new BigRational(ev.Offset, 58);
var newEv = new Event
{
[NumericData.SourceCommand] = ev.Param0,
[NumericData.SourceData] = ev.Param1,
[NumericData.SourceOffset] = ev.Offset,
[NumericData.LinearOffset] = offset,
};
switch (chartType)
{
case DjmainChartType.Beatmania:
_djmainEventMetadataDecoder.AddBeatmaniaMetadata(newEv, ev);
break;
case DjmainChartType.Popn:
_djmainEventMetadataDecoder.AddPopnMetadata(newEv, ev);
break;
}
yield return(newEv);
}
}