private void decodeLastReadRowToByte(byte[] buffer, int bytesRead) // see http://www.libpng.org/pub/png/spec/1.2/PNG-DataRep.html
{
if (ImgInfo.BitDepth <= 8)
{
Array.Copy(rowb, 1, buffer, 0, bytesRead);
}
else // 16 bitspc
{
for (int i = 0, j = 1; j < bytesRead; i++, j += 2)
{
buffer[i] = rowb[j]; // 16 bits in 1 byte: this discards the LSB!!!
}
}
if (ImgInfo.Packed && unpackedMode)
{
ImageLine.unpackInplaceByte(ImgInfo, buffer, buffer, false);
}
}
public static byte[] Unpack(ImageInfo imgInfo, byte[] src, byte[] dst, bool scale)
{
int len1 = imgInfo.SamplesPerRow;
int len0 = imgInfo.SamplesPerRowPacked;
if (dst == null || dst.Length < len1)
{
dst = new byte[len1];
}
if (imgInfo.Packed)
{
ImageLine.unpackInplaceByte(imgInfo, src, dst, scale);
}
else
{
Array.Copy(src, 0, dst, 0, len0);
}
return(dst);
}
public void decodeLastReadRowToByte(byte[] buffer, int bytesRead)
{
if (ImgInfo.BitDepth <= 8)
{
Array.Copy(rowb, 1, buffer, 0, bytesRead);
}
else
{
int num = 0;
for (int i = 1; i < bytesRead; i += 2)
{
buffer[num] = rowb[i];
num++;
}
}
if (ImgInfo.Packed && unpackedMode)
{
ImageLine.unpackInplaceByte(ImgInfo, buffer, buffer, scale: false);
}
}