Reduce peak memory usage of queue processing, Issue 2527

rtengine/labimage.cc

@@ -3,32 +3,11 @@
 namespace rtengine {
 
 LabImage::LabImage (int w, int h) : fromImage(false), W(w), H(h) {
-
-    L = new float*[H];
-    a = new float*[H];
-    b = new float*[H];
-
-    data = new float [W*H*3];
-    float * index = data;
-    for (int i=0; i<H; i++)
-        L[i] = index + i*W;
-    index+=W*H;
-    for (int i=0; i<H; i++)
-        a[i] = index + i*W;
-    index+=W*H;
-
-    for (int i=0; i<H; i++)
-        b[i] = index + i*W;
+	allocLab(w,h);
 }
 
 LabImage::~LabImage () {
-
-    if (!fromImage) {
-        delete [] L;
-        delete [] a;
-        delete [] b;
-        delete [] data;
-    }
+	deleteLab();
 }
 
 void LabImage::CopyFrom(LabImage *Img){