saving PGF file

[Aris Basic]

is this working in current trunk version ?
Write() seems to work on m_wtChannel data but nothing calls into encoder (i think all i have output are headers)
but no level data or anything like that (shouldnt Write output everything to stream ?? )

[Raphael Schweizer]

Yes, current trunk is supposed to be working. CPGFImage::Write (PGFimage.cpp, line 882) takes a CPGFStream to write to.
For encoding the workflow usually would look like this (see Console (pgf folder in svn)):
- Read source image (the console uses FreeImage)
- Create and set PGF header (and set desired values)
- Import the image into the PGFImage (will do downsampling / YUV transformation if needed)
- Write to the stream (will do wavelet transformation / encoding)

Feel free to ask any follow-up questions.

- Raphael

[Aris Basic]

this is how i tried to do it (with 16bit gray and RGB data)
all i get in file is header data nothing else

PGFHeader pgfHeader;
memset(&pgfHeader,0,sizeof(PGFHeader));
pgfHeader.channels = image.NChannels();
pgfHeader.height = image.Height();
pgfHeader.width = image.Width();
pgfHeader.nLevels = 5;
pgfHeader.quality = lossless?0:MaxQuality;
pgfHeader.mode = getPGFMode(image);
pgfHeader.bpp = 0;
CPGFImage pgfImage;
pgfImage.SetHeader(pgfHeader,PGFVersion);
pgfImage.ImportBitmap(image.Step(),image.DataPtr(),image.Precision());

HANDLE fileHandle = CreateFile(filename.c_str(),GENERIC_WRITE,0,0,CREATE_ALWAYS,0,0);
if (fileHandle == INVALID_HANDLE_VALUE)
OPAL_THROW(format("Unable to CreateFile ") % filename.c_str());

CPGFFileStream fileStream(fileHandle);

pgfImage.Write(&fileStream)

[Raphael Schweizer]

Most likely the problem is "pgfHeader.bpp = 0", try setting BitsPerPixel to a value > 0 and <= 31 (e.g. 16, values  > 31 will be ignored)