///// <summary>
///// Gets the size of the <c>ISMatTag</c>
///// </summary>
//public int Size
//{
// get { return (int)Buf.BaseStream.Length; }
//}
/// <summary>
/// Read MAT-file tag to a byte buffer.
/// </summary>
/// <param name="buff"><c>ByteBuffer</c></param>
/// <param name="storage"><c>ByteStorageSupport</c></param>
public void ReadToByteBuffer(ByteBuffer buff, IByteStorageSupport storage)
{
MatFileInputStream mfis = new MatFileInputStream(Buf, _type);
int elements = _size / SizeOf();
mfis.ReadToByteBuffer(buff, elements, storage);
//skip padding
if (padding > 0)
{
Buf.ReadBytes(padding);
}
}
/// <summary>
/// Reads the data into a <c>ByteBuffer</c>.
/// </summary>
/// <param name="dest">The destination <c>ByteBuffer</c></param>
/// <param name="elements">The number of elements to read into a buffer</param>
/// <param name="storage">The backing <c>ByteStorageSupport</c> that
/// gives information on how data should be interpreted</param>
/// <returns>Reference to the destination <c>ByteBuffer</c></returns>
/// <exception cref="NotSupportedException">When attempting to read an unsupported
/// class type from the buffer</exception>
public ByteBuffer ReadToByteBuffer(ByteBuffer dest, int elements,
IByteStorageSupport storage)
{
int bytesAllocated = storage.GetBytesAllocated;
int size = elements * bytesAllocated;
// direct buffer copy
if (MatDataTypes.SizeOf(_type) == bytesAllocated)
{
int bufMaxSize = 1024;
int bufSize = Math.Min((int)(_buf.BaseStream.Length - _buf.BaseStream.Position), bufMaxSize);
int bufPos = (int)_buf.BaseStream.Position;
byte[] tmp = new byte[bufSize];
while (dest.Remaining > 0)
{
int length = Math.Min(dest.Remaining, tmp.Length);
_buf.Read(tmp, 0, length);
dest.Put(tmp, 0, length);
}
_buf.BaseStream.Position = bufPos + size;
}
else
{
// Because Matlab writes data not respectively to the declared
// matrix type, the reading is not straight forward (as above)
Type clazz = storage.GetStorageType;
while (dest.Remaining > 0)
{
if (clazz.Equals(typeof(double)))
{
dest.PutDouble(ReadDouble());
continue;
}
if (clazz.Equals(typeof(float)))
{
dest.PutFloat((float)ReadDouble()); // QND
continue;
}
if (clazz.Equals(typeof(byte)))
{
dest.PutDouble(ReadByte());
continue;
}
if (clazz.Equals(typeof(int)))
{
dest.PutDouble(ReadInt());
continue;
}
if (clazz.Equals(typeof(long)))
{
dest.PutDouble(ReadLong());
continue;
}
throw new NotSupportedException("Not supported buffer reader for " + clazz);
}
}
dest.Rewind();
return(dest);
}
