add a way to get segments from tone curves

- Add a way to get segments from tone curves
- Add a check for windows in meson file of fast-float plugin

2 files changed, 6 insertions, 6 deletions

diff --git a/src/cmsgamma.c b/src/cmsgamma.c
index 1031fc1..24b2ada 100644
--- a/src/cmsgamma.c
+++ b/src/cmsgamma.c
@@ -1491,13 +1491,13 @@ cmsFloat64Number CMSEXPORT cmsEstimateGamma(const cmsToneCurve* t, cmsFloat64Num
     return (sum / n);   // The mean
 }
 
+// Retrieve segments on tone curves
 
-// Retrieve parameters on one-segment tone curves
-
-cmsFloat64Number* CMSEXPORT cmsGetToneCurveParams(const cmsToneCurve* t)
+const cmsCurveSegment* CMSEXPORT cmsGetToneCurveSegment(cmsInt32Number n, const cmsToneCurve* t)
 {
     _cmsAssert(t != NULL);
 
-    if (t->nSegments != 1) return NULL;
-    return t->Segments[0].Params;
+    if (n < 0 || n >= (cmsInt32Number) t->nSegments) return NULL;
+    return t->Segments + n;
 }
+
diff --git a/src/lcms2.def b/src/lcms2.def
index b9ce630..5bd2678 100644
--- a/src/lcms2.def
+++ b/src/lcms2.def
@@ -362,7 +362,7 @@ cmsMD5add                                =   cmsMD5add
 cmsMD5alloc                              =   cmsMD5alloc

 cmsMD5finish                             =   cmsMD5finish

 _cmsComputeInterpParams                  =   _cmsComputeInterpParams

-cmsGetToneCurveParams                    =   cmsGetToneCurveParams

+cmsGetToneCurveSegment                   =   cmsGetToneCurveSegment

 cmsDetectRGBProfileGamma                 =   cmsDetectRGBProfileGamma

 _cmsOptimizePipeline                     =   _cmsOptimizePipeline

 _cmsReasonableGridpointsByColorspace     =   _cmsReasonableGridpointsByColorspace