Refactor: Move curvemapping .blend read/write to blenkernel

This is necessary so that it can be accessed from `blendWrite`
and `blendRead` callbacks from modifiers.

4 files changed, 39 insertions, 16 deletions

diff --git a/source/blender/blenkernel/BKE_colortools.h b/source/blender/blenkernel/BKE_colortools.h
index 94b8d59b3db..0623e0e5395 100644
--- a/source/blender/blenkernel/BKE_colortools.h
+++ b/source/blender/blenkernel/BKE_colortools.h
@@ -37,6 +37,8 @@ struct Histogram;
 struct ImBuf;
 struct Scopes;
 struct rctf;
+struct BlendWriter;
+struct BlendDataReader;
 
 void BKE_curvemapping_set_defaults(
     struct CurveMapping *cumap, int tot, float minx, float miny, float maxx, float maxy);
@@ -100,6 +102,11 @@ void BKE_curvemapping_table_RGBA(const struct CurveMapping *cumap, float **array
 /* non-const, these modify the curve */
 void BKE_curvemapping_premultiply(struct CurveMapping *cumap, int restore);
 
+void BKE_curvemapping_blend_write(struct BlendWriter *writer, const struct CurveMapping *cumap);
+void BKE_curvemapping_curves_blend_write(struct BlendWriter *writer,
+                                         const struct CurveMapping *cumap);
+void BKE_curvemapping_blend_read(struct BlendDataReader *reader, struct CurveMapping *cumap);
+
 void BKE_histogram_update_sample_line(struct Histogram *hist,
                                       struct ImBuf *ibuf,
                                       const struct ColorManagedViewSettings *view_settings,
diff --git a/source/blender/blenkernel/intern/colortools.c b/source/blender/blenkernel/intern/colortools.c
index 3da384a2745..4f4eb8f9f9d 100644
--- a/source/blender/blenkernel/intern/colortools.c
+++ b/source/blender/blenkernel/intern/colortools.c
@@ -44,6 +44,8 @@
 #include "IMB_colormanagement.h"
 #include "IMB_imbuf_types.h"
 
+#include "BLO_read_write.h"
+
 /* ********************************* color curve ********************* */
 
 /* ***************** operations on full struct ************* */
@@ -1238,6 +1240,32 @@ void BKE_curvemapping_table_RGBA(const CurveMapping *cumap, float **array, int *
   }
 }
 
+void BKE_curvemapping_blend_write(BlendWriter *writer, const CurveMapping *cumap)
+{
+  BLO_write_struct(writer, CurveMapping, cumap);
+  BKE_curvemapping_curves_blend_write(writer, cumap);
+}
+
+void BKE_curvemapping_curves_blend_write(BlendWriter *writer, const CurveMapping *cumap)
+{
+  for (int a = 0; a < CM_TOT; a++) {
+    BLO_write_struct_array(writer, CurveMapPoint, cumap->cm[a].totpoint, cumap->cm[a].curve);
+  }
+}
+
+/* cumap itself has been read already. */
+void BKE_curvemapping_blend_read(BlendDataReader *reader, CurveMapping *cumap)
+{
+  /* flag seems to be able to hang? Maybe old files... not bad to clear anyway */
+  cumap->flag &= ~CUMA_PREMULLED;
+
+  for (int a = 0; a < CM_TOT; a++) {
+    BLO_read_data_address(reader, &cumap->cm[a].curve);
+    cumap->cm[a].table = NULL;
+    cumap->cm[a].premultable = NULL;
+  }
+}
+
 /* ***************** Histogram **************** */
 
 #define INV_255 (1.f / 255.f)
diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index f3b92b1f6a4..2e7532c5b46 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -2887,16 +2887,7 @@ static void direct_link_id_common(
 /* cuma itself has been read! */
 static void direct_link_curvemapping(BlendDataReader *reader, CurveMapping *cumap)
 {
-  int a;
-
-  /* flag seems to be able to hang? Maybe old files... not bad to clear anyway */
-  cumap->flag &= ~CUMA_PREMULLED;
-
-  for (a = 0; a < CM_TOT; a++) {
-    BLO_read_data_address(reader, &cumap->cm[a].curve);
-    cumap->cm[a].table = NULL;
-    cumap->cm[a].premultable = NULL;
-  }
+  BKE_curvemapping_blend_read(reader, cumap);
 }
 
 /** \} */
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 2cc6cecd815..909a12a48aa 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -155,6 +155,7 @@
 #include "BKE_blender_version.h"
 #include "BKE_bpath.h"
 #include "BKE_collection.h"
+#include "BKE_colortools.h"
 #include "BKE_constraint.h"
 #include "BKE_curve.h"
 #include "BKE_fcurve.h"
@@ -969,16 +970,12 @@ static void write_animdata(BlendWriter *writer, AnimData *adt)
 
 static void write_curvemapping_curves(BlendWriter *writer, CurveMapping *cumap)
 {
-  for (int a = 0; a < CM_TOT; a++) {
-    BLO_write_struct_array(writer, CurveMapPoint, cumap->cm[a].totpoint, cumap->cm[a].curve);
-  }
+  BKE_curvemapping_curves_blend_write(writer, cumap);
 }
 
 static void write_curvemapping(BlendWriter *writer, CurveMapping *cumap)
 {
-  BLO_write_struct(writer, CurveMapping, cumap);
-
-  write_curvemapping_curves(writer, cumap);
+  BKE_curvemapping_blend_write(writer, cumap);
 }
 
 static void write_CurveProfile(BlendWriter *writer, CurveProfile *profile)