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/benchmarks/sift/src/c/script_sift.c | 83 ++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 SD-VBS/benchmarks/sift/src/c/script_sift.c

(limited to 'SD-VBS/benchmarks/sift/src/c/script_sift.c')

diff --git a/SD-VBS/benchmarks/sift/src/c/script_sift.c b/SD-VBS/benchmarks/sift/src/c/script_sift.c
new file mode 100644
index 0000000..0b2f106
--- /dev/null
+++ b/SD-VBS/benchmarks/sift/src/c/script_sift.c
@@ -0,0 +1,83 @@
+/********************************
+Author: Sravanthi Kota Venkata
+********************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "sift.h"
+#include <malloc.h>
+#include "extra.h"
+#define SIFT_MEM 1<<29
+void normalizeImage(F2D* image)
+{
+	int i;
+	int rows;
+	int cols;
+ 
+    int tempMin = 10000, tempMax = -1;
+	rows = image->height;
+	cols = image->width;
+
+    for(i=0; i<(rows*cols); i++)
+        if(tempMin > asubsref(image,i))
+            tempMin = asubsref(image,i);
+
+    for(i=0; i<(rows*cols); i++)
+        asubsref(image,i) = asubsref(image,i) - tempMin;
+
+    for(i=0; i<(rows*cols); i++)
+        if(tempMax < asubsref(image,i))
+            tempMax = asubsref(image,i);
+
+    for(i=0; i<(rows*cols); i++)
+        asubsref(image,i) = ( asubsref(image,i) / (tempMax+0.0) );
+}
+
+int main(int argc, char* argv[])
+{
+    SET_UP
+    mallopt(M_TOP_PAD, SIFT_MEM);
+    mallopt(M_MMAP_MAX, 0);
+    I2D* im;
+    F2D *image;
+    int rows, cols, i, j;
+    F2D* frames;
+    unsigned int* startTime, *endTime, *elapsed;    
+    
+    char imSrc[100];
+    printf("Input image: ");
+    scanf("%s", imSrc);
+    im = readImage(imSrc);
+    image = fiDeepCopy(im);
+    rows = image->height;
+    cols = image->width;
+
+
+    printf("start\n");
+    for_each_job{
+        image = fiDeepCopy(im);
+	normalizeImage(image);
+        /** Extract sift features for the normalized image **/
+        frames = sift(image);
+    }
+    printf("end..\n");
+   
+#ifdef CHECK   
+    {
+        int ret=0;
+        float tol = 0.2;
+#ifdef GENERATE_OUTPUT
+        fWriteMatrix(frames, argv[1]);
+#endif
+        ret = fSelfCheck(frames, "expected_C.txt", tol);
+        if (ret == -1)
+            printf("Error in SIFT\n");
+    }
+#endif    
+
+    iFreeHandle(im);
+    fFreeHandle(frames);
+    WRITE_TO_FILE
+    return 0;
+}
+
-- 
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