| public ImgWriterPGX ( IFileInfo out_Renamed, BlkImgDataSrc imgSrc, int c, bool isSigned ) : System | ||
| out_Renamed | IFileInfo | |
| imgSrc | BlkImgDataSrc | The source from where to get the image data to write. /// /// |
| c | int | The index of the component from where to get the data. /// /// |
| isSigned | bool | Whether the datas are signed or not (needed only when /// writing header). /// /// |
| return | System | |
public ImgWriterPGX(IFileInfo out_Renamed, BlkImgDataSrc imgSrc, int c, bool isSigned)
{
//Initialize
this.c = c;
if (out_Renamed.Exists && !out_Renamed.Delete())
{
throw new System.IO.IOException("Could not reset file");
}
this.out_Renamed = SupportClass.RandomAccessFileSupport.CreateRandomAccessFile(out_Renamed, "rw");
this.isSigned = isSigned;
src = imgSrc;
w = src.ImgWidth;
h = src.ImgHeight;
fb = imgSrc.getFixedPoint(c);
bitDepth = src.getNomRangeBits(this.c);
if ((bitDepth <= 0) || (bitDepth > 31))
{
throw new System.IO.IOException("PGX supports only bit-depth between " + "1 and 31");
}
if (bitDepth <= 8)
{
packBytes = 1;
}
else if (bitDepth <= 16)
{
packBytes = 2;
}
else
{
// <= 31
packBytes = 4;
}
// Writes PGX header
System.String tmpString = "PG " + "ML " + ((this.isSigned)?"- ":"+ ") + bitDepth + " " + w + " " + h + "\n"; // component height
byte[] tmpByte = System.Text.Encoding.UTF8.GetBytes(tmpString);
for (int i = 0; i < tmpByte.Length; i++)
{
this.out_Renamed.WriteByte((byte) tmpByte[i]);
}
offset = tmpByte.Length;
maxVal = this.isSigned?((1 << (src.getNomRangeBits(c) - 1)) - 1):((1 << src.getNomRangeBits(c)) - 1);
minVal = this.isSigned?((- 1) * (1 << (src.getNomRangeBits(c) - 1))):0;
levShift = (this.isSigned)?0:1 << (src.getNomRangeBits(c) - 1);
}
| ImgWriterPGX::ImgWriterPGX ( System fname, BlkImgDataSrc imgSrc, int c, bool isSigned ) : System |
