/// <summary>
/// Load the picture data from the file,
/// if not done yet.
/// </summary>
public void Load()
{
// Already loaded ?
if (file == null)
{
return;
}
// Load the picture from the stream
Stream stream = null;
ByteVector data = null;
try {
if (stream_size == 0)
{
data = new ByteVector();
}
else if (stream_size > 0)
{
stream = file.ReadStream;
stream.Seek(stream_offset, SeekOrigin.Begin);
int count = 0, read = 0, needed = (int)stream_size;
byte[] buffer = new byte[needed];
do
{
count = stream.Read(buffer, read, needed);
read += count;
needed -= count;
} while (needed > 0 && count != 0);
data = new ByteVector(buffer, read);
}
else
{
stream = file.ReadStream;
stream.Seek(stream_offset, SeekOrigin.Begin);
data = ByteVector.FromStream(stream);
}
} finally {
// Free the resources
if (stream != null && file != null)
{
file.CloseStream(stream);
}
file = null;
}
// Decode the raw data if required, by using FieldData
raw_data = FieldData(data, -(int)FrameHeader.Size(raw_version), raw_version);
// Get the actual data
ParseRawData();
}
internal static ByteVector FromFile(File.IFileAbstraction abstraction, out byte[] firstChunk, bool copyFirstChunk)
{
if (abstraction == null)
{
throw new ArgumentNullException("abstraction");
}
System.IO.Stream stream = abstraction.ReadStream;
ByteVector output = FromStream(stream, out firstChunk, copyFirstChunk);
abstraction.CloseStream(stream);
return(output);
}
/// <summary>
/// Load the picture data from the file,
/// if not done yet.
/// </summary>
public void Load()
{
// Already loaded ?
if (data != null)
{
return;
}
// Load the picture from the stream
Stream stream = null;
try
{
if (stream_size == 0)
{
data = new ByteVector();
}
else if (stream_size > 0)
{
stream = file.ReadStream;
stream.Seek(stream_offset, SeekOrigin.Begin);
int count = 0, read = 0, needed = (int)stream_size;
byte[] buffer = new byte[needed];
do
{
count = stream.Read(buffer, read, needed);
read += count;
needed -= count;
} while (needed > 0 && count != 0);
data = new ByteVector(buffer, read);
}
else
{
stream = file.ReadStream;
stream.Seek(stream_offset, SeekOrigin.Begin);
data = ByteVector.FromStream(stream);
}
}
finally
{
// Free the resources
if (stream != null && file != null)
{
file.CloseStream(stream);
}
file = null;
}
// Retrieve remaining properties from data (if required)
if (mime_type == null)
{
string ext = Picture.GetExtensionFromData(data);
MimeType = Picture.GetMimeFromExtension(ext);
if (ext != null)
{
type = PictureType.FrontCover;
if (filename == null)
{
filename = description = "cover" + ext;
}
}
else
{
type = PictureType.NotAPicture;
if (filename == null)
{
filename = "UnknownType";
}
}
}
}