private static void WriteFileHeader(this BigEndianBinaryWriter writer, uint version, ushort tableCount, ushort searchRange, ushort entrySelector, ushort rangeShift)
{
// file header
// Type Name | name | Description
// ----------|---------------|------------------------------
// uint32 | sfntVersion | 0x00010000 or 0x4F54544F('OTTO') — see below.
// uint16 | numTables | Number of tables.
// uint16 | searchRange | (Maximum power of 2 <= numTables) x 16.
// uint16 | entrySelector | Log2(maximum power of 2 <= numTables).
// uint16 | rangeShift | NumTables x 16 - searchRange.
writer.WriteUInt32(version);
writer.WriteUInt16(tableCount);
writer.WriteUInt16(searchRange);
writer.WriteUInt16(entrySelector);
writer.WriteUInt16(rangeShift);
}
private static void WriteFileHeader(this BigEndianBinaryWriter writer, uint version, params TableHeader[] headers)
{
// file header
// Type Name | name | Description
// ----------|---------------|------------------------------
// uint32 | sfntVersion | 0x00010000 or 0x4F54544F('OTTO') — see below.
// uint16 | numTables | Number of tables.
// uint16 | searchRange | (Maximum power of 2 <= numTables) x 16.
// uint16 | entrySelector | Log2(maximum power of 2 <= numTables).
// uint16 | rangeShift | NumTables x 16 - searchRange.
writer.WriteUInt32(version);
writer.WriteUInt16((ushort)headers.Length);
writer.WriteUInt16(0);
writer.WriteUInt16(0);
writer.WriteUInt16(0);
int offset = 12;
offset += headers.Length * 16;
foreach (TableHeader h in headers)
{
writer.WriteTableHeader(h.Tag, h.CheckSum, (uint)offset, h.Length);
offset += (int)h.Length;
}
}
