kc3-lang/libjpeg-turbo/testimages/test2.icc

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• Hash : 44b2399a
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  Date : 2017-01-19T15:18:57
  

  libjpeg API: Support reading/writing ICC profiles
  
  This commit does the following:
  
  -- Merges the two glueware functions (read_icc_profile() and
  write_icc_profile()) from iccjpeg.c, which is contained in downstream
  projects such as LCMS, Ghostscript, Mozilla, etc.  These functions were
  originally intended for inclusion in libjpeg, but Tom Lane left the IJG
  before that could be accomplished.  Since then, programs and libraries
  that needed to embed/extract ICC profiles in JPEG files had to include
  their own local copy of iccjpeg.c, which is suboptimal.
  
     -- The new functions were prefixed with jpeg_ and split into separate
     files for the compressor and decompressor, per the existing libjpeg
     coding standards.
  
     -- jpeg_write_icc_profile() was made slightly more fault-tolerant.
     It will now trigger a libjpeg error if it is called before
     jpeg_start_compress() or if it is passed NULL arguments.
  
     -- jpeg_read_icc_profile() was made slightly more fault-tolerant.
     It will now trigger a libjpeg error if it is called before
     jpeg_read_header() or if it is passed NULL arguments.  It will also
     now trigger libjpeg warnings if the ICC profile data is corrupt.
  
     -- The code comments have been wordsmithed.
  
     -- Note that the one-line setup_read_icc_profile() function was not
     included.  Instead, libjpeg.txt now documents the need to call
     jpeg_save_markers(cinfo, JPEG_APP0 + 2, 0xFFFF) prior to calling
     jpeg_read_header(), if jpeg_read_icc_profile() is to be used.
  
  -- Adds documentation for the new functions to libjpeg.txt.
  
  -- Adds an -icc switch to cjpeg and jpegtran that allows those programs
  to embed an ICC profile in the JPEG files they generate.
  
  -- Adds an -icc switch to djpeg that allows that program to extract an
  ICC profile from a JPEG file while decompressing.
  
  -- Adds appropriate unit tests for all of the above.
  
  -- Bumps the SO_AGE of the libjpeg API library to indicate the presence
  of new API functions.
  
  Note that the licensing information was obtained from:
  https://github.com/mm2/Little-CMS/issues/37#issuecomment-66450180
  

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