Legacy ImageMagick Discussions Archive

ImageMagick reports resources with three numbers. The first is the current resource request, the second is the total resources consumed at the moment, and the last is the resource limit. In the case of the pixel cache, when the memory limit is reached, the next image is automatically cached to memor...

We'll take another look at the problem this weekend and get back to you.

There is a patch in ImageMagick 6.2.6-2 for the problem you reported but the patch is flawed. We will apply a more robust patch within a day or two.

The JPEG quality is not stored in the JPEG image, it is estimated. Looks like Fireworks has a problem estimating the correct JPEG compression quality.

You can convert a web page to JPEG, for example, with this command: convert http://www.google.com/index.html google.jpg This process requires the html2ps script. A better solution might be to have a script fire up Firefox and issue a print command to Postscript then convert the Postscript to a JPEG ...

To convert just the first page of a PDF document, try this command:

• convert 'image.pdf[0]' image.jpg

Try this command:

• convert 113.jpg -support 0.95 -resize 200x280! -strip -quality 80 image.jpg

You may need to play with the support or quality options to get an optimal result.

Magick++ has methods to handle memory blobs. You can read/write in whatever format you want (e.g. GIF, JPEG, MIFF, etc.) or perhaps the best would be to just pass raw images in the RGBA format.

Did you try closing the file you pass MagickReadImageFile()? ImageMagick call fdopen() on the file descriptior you pass and the memory is not released until you call fclose().

To test your code we just cut-n-pasted your code snippet into the button project you find in c:\Program Files\ImageMagick-6.2.6-Q16\Magick++_Demos. When you get an undefined symbol just add MagickLib:: in front of it to tell the C++ compiler to look in the MagickLib namespace.

Thanks for the problem report and patch. We'll get your patch into ImageMagick 6.2.6-2.

We tried your code with ImageMagick 6.2.6-1 under Windows compiled with Visual C++ 2003 .Net and it worked without complaint. It produced a file with the image attributes in it as expected.

Do you need the gvc delegate library? If not, this warning can safely be ignored. If so, you need the latest release of gvc to build with ImageMagick. They have made some changes to the library recently which is not backwards comapible with previous versions.

To install ImageMagick from source, use these commands:

• tar xvfz ImageMagick-6.2.6-1.tar.gz
  cd ImageMagick-6.2.6
  ./configure
  make
  make install

We assume you declared *p as char **p? We tried your code under Windows XP with ImageMagick 6.2.6-1 and the GetConfigureList() method properly returned the configure list as expected without complaint or fault.