protected override Frame ParseFrame(byte[] data)
{
int place=0;
SingleByteField encodingField=new SingleByteField();
place+=encodingField.Parse(data, place);
FixedLengthAsciiTextField imageFormatField=new FixedLengthAsciiTextField(3);
place+=imageFormatField.Parse(data, place);
SingleByteField pictureTypeField=new SingleByteField();
place+=pictureTypeField.Parse(data, place);
TextField descriptionField=TextField.CreateTextField(true,(EncodingScheme)encodingField.Value);
place+=descriptionField.Parse(data, place);
BinaryField dataField=new BinaryField();
place+=dataField.Parse(data, place);
System.IO.MemoryStream memoryImageBuffer=new System.IO.MemoryStream(dataField.Data);
try
{
System.Drawing.Image image=System.Drawing.Image.FromStream(memoryImageBuffer);
return new PictureFrame(dataField.Data, image, descriptionField.Text, (PictureType)pictureTypeField.Value);
}
catch(ArgumentException)
{
throw new FrameParsingException("Unrecognized picture format found in Picture frame.");
}
}
public void DoTest()
{
foreach(string testCase in _asciiTestCases)
{
FixedLengthAsciiTextField field=new FixedLengthAsciiTextField(testCase);
MemoryStream stream=new MemoryStream();
field.WriteToStream(stream);
FixedLengthAsciiTextField field2=new FixedLengthAsciiTextField(testCase.Length);
field2.Parse(stream.GetBuffer(), 0);
Assert.AreEqual(field.Text, field2.Text);
}
}
protected static string ParseExtendedTextFrame(byte[] data, out string description, out LanguageCode language)
{
int place=0;
SingleByteField encodingField=new SingleByteField();
place+=encodingField.Parse(data, place);
FixedLengthAsciiTextField langField=new FixedLengthAsciiTextField(3);
place+=langField.Parse(data, place);
TextField descriptinoField=TextField.CreateTextField(true,(EncodingScheme)encodingField.Value);
place+=descriptinoField.Parse(data, place);
TextField textField=TextField.CreateTextField(false,(EncodingScheme)encodingField.Value);
place+=textField.Parse(data, place);
if(!Enum.IsDefined(typeof(LanguageCode), langField.Text))
{
langField.Text="Unknown";
}
language=(LanguageCode)Enum.Parse(typeof(LanguageCode), langField.Text);
description=descriptinoField.Text;
return textField.Text;
}
