private static void WriteAfs2ArchiveToStream(ReadOnlyCollection <byte[]> files, Stream stream, uint alignment)
{
var fileCount = (uint)files.Count;
if (files.Count >= ushort.MaxValue)
{
throw new IndexOutOfRangeException($"File count {fileCount} exceeds maximum possible value (65535).");
}
if (files.Count != 1)
{
throw new NotSupportedException("Currently DereTore does not support more than one file.");
}
stream.WriteBytes(Afs2Archive.Afs2Signature);
const uint version = 0x00020401;
stream.WriteUInt32LE(version);
stream.WriteUInt32LE(fileCount);
stream.WriteUInt32LE(alignment);
const uint offsetFieldSize = (version >> 8) & 0xff; // version[1], always 4? See Afs2Archive.Initialize().
// Prepare the fields.
var afs2HeaderSegmentSize = 0x10 + // General data
2 * fileCount + // Cue IDs
offsetFieldSize * fileCount + // File offsets
sizeof(uint); // Size of last file (U32)
// Assuming the music file always has ID 0 in Waveform table and Cue table.
var records = new List <Afs2FileRecord>();
var currentFileRawOffset = afs2HeaderSegmentSize;
for (ushort i = 0; i < fileCount; ++i)
{
var record = new Afs2FileRecord {
// TODO: Use the Cue table.
CueId = i,
FileOffsetRaw = currentFileRawOffset,
FileOffsetAligned = AcbHelper.RoundUpToAlignment(currentFileRawOffset, alignment)
};
records.Add(record);
currentFileRawOffset = (uint)(record.FileOffsetAligned + files[i].Length);
}
var lastFileEndOffset = currentFileRawOffset;
for (var i = 0; i < files.Count; ++i)
{
stream.WriteUInt16LE(records[i].CueId);
}
for (var i = 0; i < files.Count; ++i)
{
stream.WriteUInt32LE((uint)records[i].FileOffsetRaw);
}
// TODO: Dynamically judge it. See Afs2Archive.Initialize().
stream.WriteUInt32LE(lastFileEndOffset);
for (var i = 0; i < files.Count; ++i)
{
stream.SeekAndWriteBytes(files[i], records[i].FileOffsetAligned);
}
}
// ReSharper disable once IdentifierTypo
private static void AfsToWav(Afs2FileRecord afsRecord, Stream awbStream, DecodeParams decodeParams,
string output)
{
using var fileData =
AcbHelper.ExtractToNewStream(awbStream, afsRecord.FileOffsetAligned, (int)afsRecord.FileLength);
var isHcaStream = DereTore.Exchange.Audio.HCA.HcaReader.IsHcaStream(fileData);
if (!isHcaStream)
{
return;
}
using var fs = File.OpenWrite(output);
try
{
HcaToWav(fileData, fs, decodeParams);
}
catch (Exception)
{
Console.Error.WriteLine($"Failed to convert {output}:");
throw;
}
}
