private void setvalues(FrameReader reader)
{
this.frameCount = reader.FrameCount;
this.header = reader.TagHeader;
this.title = reader.Read<string>("TIT2", ReadString, null);
this.artist = reader.Read<string>("TPE1", ReadString, null);
this.album = reader.Read<string>("TALB", ReadString, null);
this.year = reader.Read<string>("TYER", ReadString, null);
this.trackstring = reader.Read<string>("TRCK", ReadString, null);
if (trackstring == null)
{
this.tracknumber = -1;
}
else if (trackstring.Contains("/"))
{
string s = trackstring.Substring(0, trackstring.IndexOf('/'));
this.tracknumber = -1;
int.TryParse(s, out this.tracknumber);
}
else
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < trackstring.Length; i++)
{
if (char.IsDigit(trackstring[i]))
sb.Append(trackstring[i]);
}
this.tracknumber = -1;
int.TryParse(sb.ToString(), out this.tracknumber);
}
}
public static bool IsEmpty(TagHeader item)
{
return item.isempty;
}
static TagHeader()
{
empty = new TagHeader(new Version(), (TagFlags)0, 0, 0);
empty.isempty = true;
}
public FrameInfo(Stream stream, TagHeader header, bool checkUnsynchronisation)
{
byte[] buffer = new byte[10];
stream.Read(buffer, 0, 10);
this.identifier = Encoding.ASCII.GetString(buffer, 0, 4);
this.statusflags = (FrameStatusFlag)buffer[8];
this.formatflags = (FrameFormatFlags)buffer[9];
int sizeS = BinaryConverter.ToInt32(buffer, 4, true); // sizeS <= sizeU
int sizeU = BinaryConverter.ToInt32(buffer, 4, false); // sizeU >= sizeS
this.size = sizeS;
if (sizeS != sizeU && checkUnsynchronisation)
{
int maxsize = header.Size - (int)(stream.Position - header.FirstFramePosition);
long p = stream.Position;
if (sizeU == maxsize)
{
stream.Seek(sizeS, SeekOrigin.Current);
BinaryConverter.Skip(0, stream, header.FirstFramePosition + (long)header.Size);
FrameInfo frameS = new FrameInfo(stream, header, false);
stream.Seek(p, SeekOrigin.Begin);
if (!char.IsLetterOrDigit(frameS.Identifier, 0) ||
!char.IsLetterOrDigit(frameS.Identifier, 1) ||
!char.IsLetterOrDigit(frameS.Identifier, 2) ||
!char.IsLetterOrDigit(frameS.Identifier, 3) ||
frameS.Identifier != frameS.Identifier.ToUpper())
{
size = sizeU;
}
}
else
{
stream.Seek(sizeS, SeekOrigin.Current);
BinaryConverter.Skip(0, stream, header.FirstFramePosition + (long)header.Size);
FrameInfo frameS = new FrameInfo(stream, header, false);
stream.Seek(p, SeekOrigin.Begin);
stream.Seek(sizeU, SeekOrigin.Current);
BinaryConverter.Skip(0, stream, header.FirstFramePosition + (long)header.Size);
FrameInfo frameU = new FrameInfo(stream, header, false);
stream.Seek(p, SeekOrigin.Begin);
if (char.IsLetterOrDigit(frameS.Identifier, 0) &&
char.IsLetterOrDigit(frameS.Identifier, 1) &&
char.IsLetterOrDigit(frameS.Identifier, 2) &&
char.IsLetterOrDigit(frameS.Identifier, 3) &&
frameS.Identifier == frameS.Identifier.ToUpper())
{
size = sizeS;
}
else if (char.IsLetterOrDigit(frameU.Identifier, 0) &&
char.IsLetterOrDigit(frameU.Identifier, 1) &&
char.IsLetterOrDigit(frameU.Identifier, 2) &&
char.IsLetterOrDigit(frameU.Identifier, 3) &&
frameU.Identifier == frameU.Identifier.ToUpper())
{
size = sizeU;
}
else
throw new Exception("An error occured due to an invalid Unsynchronized integer.");
}
}
this.position = stream.Position;
stream.Seek(size, SeekOrigin.Current);
}
