public static Bemani1 Read(Stream source, long unitNumerator, long unitDenominator, Dictionary <int, int> ignore)
{
Bemani1 result = new Bemani1();
long offsetBase = source.Position;
BinaryReader reader = new BinaryReader(source);
int[] offset = new int[12];
int[] length = new int[12];
for (int i = 0; i < 12; i++)
{
offset[i] = reader.ReadInt32();
length[i] = reader.ReadInt32();
}
for (int i = 0; i < 12; i++)
{
if (length[i] > 0 && offset[i] >= 0x60)
{
Chart chart;
source.Position = offsetBase + offset[i];
byte[] chartData = reader.ReadBytes(length[i]);
using (MemoryStream mem = new MemoryStream(chartData))
{
chart = BeatmaniaIIDXPC.Read(mem, ignore);
chart.TickRate = new Fraction(unitNumerator, unitDenominator);
// fill in the metric offsets
chart.CalculateMetricOffsets();
}
if (chart.Entries.Count > 0)
{
result.charts[i] = chart;
}
else
{
result.charts[i] = null;
}
}
}
return(result);
}
public void Write(Stream target, long unitNumerator, long unitDenominator)
{
long baseOffset = target.Position;
int[] offset = new int[12];
int[] length = new int[12];
using (MemoryStream mem = new MemoryStream())
{
// generate the data block
for (int i = 0; i < 12; i++)
{
if (charts[i] != null)
{
baseOffset = mem.Position;
offset[i] = (int)baseOffset;
BeatmaniaIIDXPC.Write(mem, charts[i]);
length[i] = (int)(mem.Position - baseOffset);
}
}
BinaryWriter outputWriter = new BinaryWriter(target);
// write the offsets and data block
for (int i = 0; i < 12; i++)
{
if (length[i] > 0)
{
outputWriter.Write((Int32)(offset[i] + 0x60));
outputWriter.Write((Int32)length[i]);
}
else
{
outputWriter.Write((Int32)0);
outputWriter.Write((Int32)0);
}
}
outputWriter.Write(mem.ToArray());
outputWriter.Flush();
}
target.Flush();
}
