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Description: keep API compatibility for 2.16
Version 2.16 removed cmsGetToneCurveParams() from the public API without
changing the SONAME. This patch reintroduces the function to keep API
compatibility.
Author: Thomas Weber <tweber@debian.org>
Bug: https://github.com/mm2/Little-CMS/issues/429
Forwarded: not-needed
Last-Update: 2023-12-25
--- a/include/lcms2.h
+++ b/include/lcms2.h
@@ -1241,7 +1241,7 @@
CMSAPI cmsBool CMSEXPORT cmsIsToneCurveDescending(const cmsToneCurve* t);
CMSAPI cmsInt32Number CMSEXPORT cmsGetToneCurveParametricType(const cmsToneCurve* t);
CMSAPI cmsFloat64Number CMSEXPORT cmsEstimateGamma(const cmsToneCurve* t, cmsFloat64Number Precision);
-
+CMSAPI cmsFloat64Number* CMSEXPORT cmsGetToneCurveParams(const cmsToneCurve* t);
CMSAPI const cmsCurveSegment* CMSEXPORT cmsGetToneCurveSegment(cmsInt32Number n, const cmsToneCurve* t);
// Tone curve tabular estimation
--- a/src/cmsgamma.c
+++ b/src/cmsgamma.c
@@ -1511,3 +1511,12 @@
return t->Segments + n;
}
+// Retrieve parameters on one-segment tone curves
+
+cmsFloat64Number* CMSEXPORT cmsGetToneCurveParams(const cmsToneCurve* t)
+{
+ _cmsAssert(t != NULL);
+
+ if (t->nSegments != 1) return NULL;
+ return t->Segments[0].Params;
+}
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