private void ParseRelativeVolumeFields(ByteVector data)
{
int pos = data.Find(TextDelimiter(StringType.Latin1));
if (pos < 0)
{
return;
}
identification = data.Mid(0, pos).ToString(StringType.Latin1);
pos += 1;
// Each channel is at least 4 buffer.
while (pos <= data.Count - 4)
{
Id3v2ChannelType type = (Id3v2ChannelType)data[pos];
pos += 1;
SetVolumeAdjustmentIndex(data.Mid(pos, 2).ToShort(), type);
pos += 2;
int bytes = BitsToBytes(data[pos]);
pos += 1;
SetPeakVolumeIndex(ParsePeakVolume(data.Mid(pos, bytes)), type);
pos += bytes;
}
}
public void Parse(ByteVector data)
{
if (data != null)
{
// 11 buffer is the minimum size for an APE item
if (data.Count < 11)
{
TagLibDebugger.Debug("APE.Item.Parse() -- no data in item");
return;
}
uint value_length = data.Mid(0, 4).ToUInt(false);
uint flags = data.Mid(4, 4).ToUInt(false);
int pos = data.Find(new ByteVector(1), 8);
key = data.Mid(8, pos - 8).ToString(StringType.UTF8);
value = data.Mid(pos + 1, (int)value_length);
ReadOnly = (flags & 1) == 1;
Type = (ApeItemType)((flags >> 1) & 3);
if (Type != ApeItemType.Binary)
{
text.Clear();
text = new StringCollection(ByteVectorCollection.Split(value, (byte)0), StringType.UTF8);
}
}
else
{
throw new ArgumentNullException("data");
}
}
private void ParseAttachedPictureFields(ByteVector data)
{
if (data != null)
{
if (data.Count < 5)
{
TagLibDebugger.Debug("A picture frame must contain at least 5 bytes.");
return;
}
int pos = 0;
textEncoding = (StringType)data[pos];
pos += 1;
int offset;
if (Header.Version > 2)
{
offset = data.Find(TextDelimiter(StringType.Latin1), pos);
if (offset < pos)
{
return;
}
mimeType = data.Mid(pos, offset - pos).ToString(StringType.Latin1);
pos = offset + 1;
}
else
{
ByteVector ext = data.Mid(pos, 3);
if (ext == "JPG")
{
mimeType = "image/jpeg";
}
else if (ext == "PNG")
{
mimeType = "image/png";
}
else
{
mimeType = "image/unknown";
}
pos += 3;
}
type = (PictureType)data[pos];
pos += 1;
offset = data.Find(TextDelimiter(textEncoding), pos);
if (offset < pos)
{
return;
}
description = data.Mid(pos, offset - pos).ToString(textEncoding);
pos = offset + 1;
this.data = data.Mid(pos);
}
else
{
throw new ArgumentNullException("data");
}
}
