/// <summary>
/// create a single instance of band encoder
/// </summary>
public static ClearCodecBandEncoder GetInstance()
{
lock (synclock)
{
if (null == _instance)
{
_instance = new ClearCodecBandEncoder();
}
}
return(_instance);
}
/// <summary>
/// Encode the residual, band, and subcodec layer images into a bytestream.
/// </summary>
public byte[] EncodeCompositePayload()
{
List <byte> buf = new List <byte>();
if (resBmp != null)
{
CLEARCODEC_RESIDUAL_DATA resData = ClearCodecResidualEncoder.Encode(resBmp);
compPayload.residualData = ToBytes(resData);
if (compPayload.residualData == null)
{
return(null);
}
compPayload.residualByteCount = (uint)compPayload.residualData.Count();
}
else
{
compPayload.residualByteCount = 0;
compPayload.residualData = null;
}
if (bandDict.Count() != 0) // Band image are loaded before.
{
ClearCodecBandEncoder bandencoder = ClearCodecBandEncoder.GetInstance();
if ((this.flags & ClearCodec_BitmapStream.CLEARCODEC_FLAG_CACHE_RESET) != 0)
{
bandencoder.ResetVBarStorage();
}
CLEARCODEC_BAND_DATA bandsData = bandencoder.Encode(bandDict);
compPayload.bandData = ToBytes(bandsData);
if (compPayload.bandData == null)
{
return(null);
}
compPayload.bandByteCount = (uint)compPayload.bandData.Count();
}
else
{
compPayload.bandByteCount = 0;
compPayload.bandData = null;
}
if (subcodecDict.Count() != 0) // Subcodec image are loaded before.
{
CLEARCODEC_SUBCODEC_DATA subcodecs = ClearCodecSubCodecEncoder.Encode(subcodecDict);
compPayload.subcodecData = ToBytes(subcodecs);
if (compPayload.subcodecData == null)
{
return(null);
}
compPayload.subcodecByteCount = (uint)compPayload.subcodecData.Count();
}
else
{
compPayload.subcodecByteCount = 0;
compPayload.subcodecData = null;
}
buf.AddRange(TypeMarshal.ToBytes <uint>(compPayload.residualByteCount));
buf.AddRange(TypeMarshal.ToBytes <uint>(compPayload.bandByteCount));
buf.AddRange(TypeMarshal.ToBytes <uint>(compPayload.subcodecByteCount));
if (compPayload.residualByteCount > 0)
{
buf.AddRange(compPayload.residualData);
}
if (compPayload.bandByteCount > 0)
{
buf.AddRange(compPayload.bandData);
}
if (compPayload.subcodecByteCount > 0)
{
buf.AddRange(compPayload.subcodecData);
}
return(buf.ToArray());
}
/// <summary>
/// create a single instance of band encoder
/// </summary>
public static ClearCodecBandEncoder GetInstance()
{
lock (synclock)
{
if (null == _instance)
{
_instance = new ClearCodecBandEncoder();
}
}
return _instance;
}
