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libgimpcolor: clean up gimp_color_profile_is_linear(), add it to gimpcolor.def

This commit is contained in:
Michael Natterer 2015-11-23 01:29:17 +01:00
parent e1af9a59c8
commit 0cf597d042
2 changed files with 49 additions and 45 deletions
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1
libgimpcolor/gimpcolor.def
View File

@ -37,6 +37,7 @@ EXPORTS
gimp_color_profile_get_type
gimp_color_profile_is_cmyk
gimp_color_profile_is_equal
gimp_color_profile_is_linear
gimp_color_profile_is_rgb
gimp_color_profile_new_adobe_rgb
gimp_color_profile_new_from_file

93
libgimpcolor/gimpcolorprofile.c
View File

@ -634,6 +634,54 @@ gimp_color_profile_is_rgb (GimpColorProfile *profile)
return (cmsGetColorSpace (profile->priv->lcms_profile) == cmsSigRgbData);
}
/**
* gimp_color_profile_is_linear:
* @profile: a #GimpColorProfile
*
* This function determines is the ICC profile represented by a GimpColorProfile
* is a linear RGB profile or not, some profiles that are LUTs though linear
* will also return FALSE;
*
* Return value: %TRUE if the profile is a matrix shaping profile with linear
* TRCs, %FALSE otherwise.
*
* Since: 2.10
**/
gboolean
gimp_color_profile_is_linear (GimpColorProfile *profile)
{
cmsHPROFILE prof;
cmsToneCurve *curve;
g_return_val_if_fail (GIMP_IS_COLOR_PROFILE (profile), FALSE);
prof = profile->priv->lcms_profile;
if (! cmsIsMatrixShaper (prof))
return FALSE;
if (cmsIsCLUT (prof, INTENT_PERCEPTUAL, LCMS_USED_AS_INPUT))
return FALSE;
if (cmsIsCLUT (prof, INTENT_PERCEPTUAL, LCMS_USED_AS_OUTPUT))
return FALSE;
curve = cmsReadTag(prof, cmsSigRedTRCTag);
if (curve == NULL || ! cmsIsToneCurveLinear (curve))
return FALSE;
curve = cmsReadTag (prof, cmsSigGreenTRCTag);
if (curve == NULL || ! cmsIsToneCurveLinear (curve))
return FALSE;
curve = cmsReadTag (prof, cmsSigBlueTRCTag);
if (curve == NULL || ! cmsIsToneCurveLinear (curve))
return FALSE;
return TRUE;
}
/**
* gimp_color_profile_is_cmyk:
* @profile: a #GimpColorProfile
@ -1292,48 +1340,3 @@ gimp_color_profile_get_format (const Babl *format,
return output_format;
}
/**
* gimp_color_profile_is_linear:
* @profile: a #GimpColorProfile
*
* This function determines is the ICC profile represented by a GimpColorProfile
* is a linear RGB profile or not, some profiles that are LUTs though linear
* will also return FALSE;
*
* Return value: TRUE if the profile is a matrix shaping profile with linear
* TRCs.
*
* Since: 2.10
**/
gboolean
gimp_color_profile_is_linear (GimpColorProfile *profile)
{
cmsHPROFILE prof;
cmsToneCurve *curve;
if (!profile)
return FALSE;
prof = profile->priv->lcms_profile;
if (!cmsIsMatrixShaper (prof))
return FALSE;
if(cmsIsCLUT(prof, INTENT_PERCEPTUAL, LCMS_USED_AS_INPUT))
return FALSE;
if(cmsIsCLUT(prof, INTENT_PERCEPTUAL, LCMS_USED_AS_OUTPUT))
return FALSE;
curve = cmsReadTag(prof, cmsSigRedTRCTag);
if (curve == NULL || !cmsIsToneCurveLinear (curve))
return FALSE;
curve = cmsReadTag(prof, cmsSigGreenTRCTag);
if (curve == NULL || !cmsIsToneCurveLinear (curve))
return FALSE;
curve = cmsReadTag(prof, cmsSigBlueTRCTag);
if (curve == NULL || !cmsIsToneCurveLinear (curve))
return FALSE;
return TRUE;
}