The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ec9b345e689dda821bc7cd8cf43606b1474d0ef2

commit ec9b345e689dda821bc7cd8cf43606b1474d0ef2
Author: noel <noel@chromium.org>
Date: Sun May 29 12:17:23 2016

[qcms] Add API to get parametric gamma curve data

qcms_profile_get_parametric_curve returns the parameter data
of a parametric gamma (TRC) curve. Caller must pass in the
color channel to retrieve the corresponding channel TRC.

At most 7 float parameters are returned in the user-provided
array. The return value is the number of parameters, or 0
if the profile curve is not parametric or is invalid.

Patch from issue http://crrev.com/2021533002#ps20001 by Radu
Velea. Landing it here on his behalf.

TBR=radu.velea@gmail.com
BUG= 615667 

Review-Url: https://codereview.chromium.org/2021663003
Cr-Commit-Position: refs/heads/master@{#396658}

[modify] https://crrev.com/ec9b345e689dda821bc7cd8cf43606b1474d0ef2/third_party/qcms/README.chromium
[modify] https://crrev.com/ec9b345e689dda821bc7cd8cf43606b1474d0ef2/third_party/qcms/src/qcms.h
[modify] https://crrev.com/ec9b345e689dda821bc7cd8cf43606b1474d0ef2/third_party/qcms/src/transform_util.c

Some notes on TRC represented as parameters, for reference.

[1] lcms https://github.com/LuaDist/lcms/blob/master/doc/LCMSAPI.TXT 
   search for [ cmsBuildParametricGamma ]
[2] Mac OSX ColorSync http://bit.ly/1IkmQb9
   see [ Tone Rendering Curves ]

 Issue 498321  has been merged into this issue.

The assigned owner "radu.velea@intel.com" is not able to receive e-mails, please re-triage.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot