title: Read and decode jpg-pictures
body: <p>I have an old program written about 1990 but modified several times. Around 2005 I started to use a program PixOps.c from Apple Computer to read different kinds of picture files.</p>
  
  <p>It has worked very well until I changed to Apple's new system Mountain Lion. Now I get several errors. Unfortunately PixOps uses a number of routines not available in Mountain Lion any longer. </p>
  
  <p>Can anyone help me how to find a C routine to read JPEG-images from a file, decode them and store them in a simple bitmap? My program manipulates the picture and then the program draws the new picture on the screen. After that I also want to write the new picture back to a file as a JPEG-picture.</p>