From d17b33131c14864bd1eae275f49a3f148e21cf29 Mon Sep 17 00:00:00 2001
From: Leo Chan <leochanj@live.unc.edu>
Date: Thu, 22 Oct 2020 01:53:21 -0400
Subject: Squashed commit of the sb-vbs branch.

Includes the SD-VBS benchmarks modified to:
- Use libextra to loop as realtime jobs
- Preallocate memory before starting their main computation
- Accept input via stdin instead of via argc

Does not include the SD-VBS matlab code.

Fixes libextra execution in LITMUS^RT.
---
 SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100755 SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc

(limited to 'SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc')

diff --git a/SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc b/SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc
new file mode 100755
index 0000000..d94130b
--- /dev/null
+++ b/SD-VBS/common/toolbox/lagrcv/calcGradientPyrMex.cc
@@ -0,0 +1,45 @@
+
+/* compile with 
+rm liblagrcv.a
+gcc -c lagrcv.cpp
+ar rc liblagrcv.a lagrcv.o
+ranlib liblagrcv.a
+mex7 calcTextureMex.cc -L/home/ikkjin/LagrMatlab/opencv/matlab -llagrcv -I/home/ikkjin/LagrMatlab/opencv/matlab/
+*/
+
+#include "mex.h"
+#include "lagrcv.h"
+#include <stdio.h>
+#include <math.h>
+
+// TODO: add number of corners parameter
+void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) {
+  // usage: [dxPye dyPyr] = 
+  //   calcGradientPyrMex(imagePyr)
+
+  const int *cellDims = mxGetDimensions(prhs[0]);
+  double *image; 
+  const mxArray* imgArray;
+  mxArray *dxArray, *dyArray;
+  double *dx, *dy;
+  const int *imdims;
+
+  plhs[0] = mxCreateCellArray(1, cellDims);
+  plhs[1] = mxCreateCellArray(1, cellDims);
+
+  for(int i=0; i<cellDims[0];i++){
+  	imgArray= mxGetCell(prhs[0],i);
+	image=mxGetPr(imgArray);
+        imdims = mxGetDimensions(imgArray);
+
+        dxArray = mxCreateNumericMatrix(imdims[0], imdims[1], mxDOUBLE_CLASS, mxREAL);
+        dyArray = mxCreateNumericMatrix(imdims[0], imdims[1], mxDOUBLE_CLASS, mxREAL);
+	mxSetCell(plhs[0], i, dxArray);
+	mxSetCell(plhs[1], i, dyArray);
+	dx=mxGetPr(dxArray);
+	dy=mxGetPr(dyArray);
+
+  	calcGradient(image, imdims[0], imdims[1], dx, dy);
+  	//calcSobel(image, imdims[0], imdims[1], dx, dy);
+  }
+}
-- 
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