public static byte[] MaybeSwap(byte[] val, bool isbe)
{
if ((BitConverter.IsLittleEndian && isbe) ||
(!BitConverter.IsLittleEndian && !isbe))
{
return(Utility.Swap(val));
}
else
{
return(val);
}
}
private static void WriteHeader(BinaryWriter writer, int trackCount)
{
// number of track entries in the file
writer.Write((byte)0x00);
writer.Write(Utility.Swap((short)trackCount));
// unknown (0x010600)
writer.Write((byte)0x01);
writer.Write((byte)0x06);
writer.Write((byte)0x00);
// size of header (0x000012, 18 byte header)
writer.Write((byte)0x00);
writer.Write((byte)0x00);
writer.Write((byte)0x12);
// 9 bytes of 0 padding?
writer.Write(new byte [9]);
}
private static void WriteTrackEntry(BinaryWriter writer, Device device,
Track track)
{
// size of entry
writer.Write((byte)0x00);
writer.Write(Utility.Swap((short)0x022e));
// unknown (0x5aa501)
writer.Write((byte)0x5a);
writer.Write((byte)0xa5);
writer.Write((byte)0x01);
// start time in 256ms increments (60 seconds = 0xea)
writer.Write(new byte [3]);
// unknown (always 0?)
writer.Write(new byte [3]);
// unknown, assoc. with start time
writer.Write(new byte [3]);
// stop time in 256ms increments (60 seconds = 0xea)
writer.Write(new byte [3]);
// unknown (always 0?)
writer.Write(new byte [3]);
// unknown, assoc. with stop time
writer.Write(new byte [3]);
// volume (-100 to 0 to 100)
writer.Write((byte)0x00);
writer.Write(Utility.Swap((short)0x0064));
// file type (0x01 = MP3, 0x02 = AAC, 0x04 = WAV)
writer.Write(new byte [2]);
switch (track.Record.Type)
{
case TrackRecordType.MP3:
writer.Write((byte)0x01);
break;
case TrackRecordType.AAC:
default:
writer.Write((byte)0x02);
break;
}
// unknown (0x000200)
writer.Write((byte)0x00);
writer.Write((byte)0x02);
writer.Write((byte)0x00);
// file name (UTF-16, record is 522 bytes)
string file = track.FileName;
if (file.StartsWith(device.VolumeInfo.MountPoint))
{
file = file.Substring(device.VolumeInfo.MountPoint.Length);
}
byte [] filebytes = Encoding.Unicode.GetBytes(file);
writer.Write(filebytes);
writer.Write(new byte [522 - filebytes.Length]);
// shuffle flag (0x00 to disable playback in shuffle mode)
writer.Write((byte)0x01);
// bookmark flag (0x00 to disable)
writer.Write((byte)0x00);
// unknown, always 0?
writer.Write((byte)0x00);
}
public override void Save(BinaryWriter writer)
{
byte[] childBytes;
int childLen;
int childPadding;
switch (Type)
{
case PhotoDetailType.ThumbnailContainer:
case PhotoDetailType.ImageContainer:
SaveChild(ImageName, out childBytes, out childLen);
break;
case PhotoDetailType.FileName:
childBytes = Encoding.Unicode.GetBytes(Value);
childLen = 12 + childBytes.Length;
break;
case PhotoDetailType.String:
childBytes = Encoding.UTF8.GetBytes(Value);
childLen = 12 + childBytes.Length;
break;
default:
throw new DatabaseWriteException("Unknown detail type: " + Type);
}
childPadding = 0;
if (Type == PhotoDetailType.FileName || Type == PhotoDetailType.String)
{
childPadding = 4 - (16 + recordPadding + childLen) % 4;
}
WriteName(writer);
writer.Write(16 + recordPadding);
writer.Write(16 + recordPadding + childLen + childPadding);
writer.Write((short)Type);
if (BrokenChildPadding)
{
writer.Write(Utility.Swap((short)childPadding));
}
else
{
writer.Write((short)childPadding);
}
WritePadding(writer);
switch (Type)
{
case PhotoDetailType.ThumbnailContainer:
case PhotoDetailType.ImageContainer:
writer.Write(childBytes, 0, childLen);
break;
case PhotoDetailType.FileName:
WriteString(writer, childBytes, childPadding, true);
break;
case PhotoDetailType.String:
WriteString(writer, childBytes, childPadding, false);
break;
default:
throw new DatabaseWriteException("Unknown detail type: " + Type);
}
}