public TwinkleArchive Decode(TwinkleBeatmaniaChunk chunk)
{
if (chunk?.Data == null || chunk.Data.Length < 0x1A00000)
{
return(null);
}
var definitions = Enumerable.Range(0, 255)
.ToDictionary(i => i,
i => _twinkleBeatmaniaSoundDefinitionDecoder.Decode(chunk.Data.AsSpan(i * 0x12)));
var sounds = definitions
.Where(def => def.Value != null && def.Value.SizeInBlocks > 0)
.Select(def =>
{
var sample = _twinkleBeatmaniaSoundDecoder.Decode(def.Value, chunk.Data.AsSpan(0x100000));
sample[NumericData.Id] = def.Key + 1;
return(sample);
})
.ToList();
var charts = ChartOffsets
.Select((offset, index) =>
{
if (_twinkleBeatmaniaChartHeuristic.Match(chunk.Data.AsMemory(offset, 0x4000)) == null)
{
return(null);
}
var events = _twinkleBeatmaniaChartDecoder
.Decode(chunk.Data.AsSpan(offset), 0x4000)
.Select(_twinkleBeatmaniaChartEventConverter.ConvertToBeatmaniaPc1)
.ToList();
if (!events.Any())
{
return(null);
}
var chart = _beatmaniaPc1ChartDecoder.Decode(events, TwinkleConstants.BeatmaniaRate);
if (chart != null)
{
chart[NumericData.ByteOffset] = offset;
chart[NumericData.Id] = index;
_twinkleBeatmaniaChartMetadataDecoder.AddMetadata(chart, index);
}
return(chart);
})
.Where(c => c != null)
.ToList();
return(new TwinkleArchive
{
Charts = charts,
Samples = sounds
});
}
public BeatmaniaPcSongSet MigrateToBemaniPc(TwinkleBeatmaniaChunk chunk)
{
if (chunk?.Data == null || chunk.Data.Length < 0x1A00000)
{
return(null);
}
var definitions = Enumerable.Range(0, 255)
.ToDictionary(i => i,
i => _twinkleBeatmaniaSoundDefinitionDecoder.Decode(chunk.Data.AsSpan(i * 0x12)));
var sounds = definitions
.Select(def =>
{
var source = def.Value != null
? _twinkleBeatmaniaSoundDecoder.Decode(def.Value, chunk.Data.AsSpan(0x100000))
: new Sound {
Samples = new[] { new Sample {
Data = new float[0]
} }, [NumericData.Rate] = 44100
};
using (var mem = new MemoryStream())
{
_riffStreamWriter.Write(mem, _riffPcm16SoundEncoder.Encode(source));
mem.Flush();
return(new BeatmaniaPcAudioEntry
{
Channel = def.Value?.Channel ?? 255,
Data = mem.ToArray(),
ExtraInfo = new byte[0],
Panning = def.Value?.Panning ?? 0x40,
Volume = def.Value?.Volume ?? 0x01
});
}
})
.ToList();
var charts = ChartOffsets
.Select((offset, index) =>
{
if (_twinkleBeatmaniaChartHeuristic.Match(chunk.Data.AsMemory(offset, 0x4000)) == null)
{
return(null);
}
var events = _twinkleBeatmaniaChartDecoder
.Decode(chunk.Data.AsSpan(offset), 0x4000)
.Select(_twinkleBeatmaniaChartEventConverter.ConvertToBeatmaniaPc1)
.ToList();
if (!events.Any())
{
return(null);
}
var noteCountEvents =
_twinkleBeatmaniaChartEventConverter.ConvertNoteCountsToBeatmaniaPc1(
_twinkleBeatmaniaChartDecoder.GetNoteCounts(chunk.Data.AsSpan(offset), 0x4000));
return(new BeatmaniaPc1Chart
{
Index = index,
Data = noteCountEvents.Concat(events).ToList()
});
})
.Where(c => c != null)
.ToList();
return(new BeatmaniaPcSongSet
{
Charts = charts,
Sounds = sounds
});
}
