From f0f911c99f3d60edd7095b0368d79c65342a9fe9 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
Date: Tue, 22 Mar 2011 15:46:30 +0100
Subject: Add basic (not working) benchmark

---
 test/benchmark.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 test/benchmark.c

(limited to 'test/benchmark.c')

diff --git a/test/benchmark.c b/test/benchmark.c
new file mode 100644
index 0000000..900b66a
--- /dev/null
+++ b/test/benchmark.c
@@ -0,0 +1,84 @@
+
+#define __USE_BSD
+#include <unistd.h>
+#undef __USE_BSD
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "uca.h"
+#include "uca-cam.h"
+
+
+static __suseconds_t time_diff(struct timeval *start, struct timeval *stop)
+{
+    return (stop->tv_sec - start->tv_sec)*1000000 + (stop->tv_usec - start->tv_usec);
+}
+
+void grab_callback_raw(uint32_t image_number, void *buffer, void *meta_data, void *user)
+{
+    uint32_t *count = (uint32_t *) user;
+    *count = image_number;
+}
+
+void benchmark_cam(struct uca_camera *cam)
+{
+    char name[256];
+    cam->get_property(cam, UCA_PROP_NAME, name, 256);
+    
+    uint32_t val = 5000;
+    cam->set_property(cam, UCA_PROP_EXPOSURE, &val);
+    val = 0;
+    cam->set_property(cam, UCA_PROP_DELAY, &val);
+
+    uint32_t width, height, bits;
+    cam->get_property(cam, UCA_PROP_WIDTH, &width, 0);
+    cam->get_property(cam, UCA_PROP_HEIGHT, &height, 0);
+    cam->get_property(cam, UCA_PROP_BITDEPTH, &bits, 0);
+    int pixel_size = bits == 8 ? 1 : 2;
+
+    struct timeval start, stop;
+
+    for (int i = 0; i < 2; i++) {
+        char *buffer = (char *) malloc(width*height*pixel_size);
+        cam->set_property(cam, UCA_PROP_HEIGHT, &height);
+        uca_cam_alloc(cam, 20);
+
+        /*
+         * Experiment 1: Grab n frames manually
+         */
+        gettimeofday(&start, NULL);
+        cam->start_recording(cam);
+        for (int i = 0; i < 1000; i++)
+            cam->grab(cam, (char *) buffer, NULL);
+            
+        cam->stop_recording(cam);
+        gettimeofday(&stop, NULL);
+
+        float seconds = time_diff(&start, &stop) / 1000000.0;
+        printf("%f,%s;%i;%i;1;%.2f;%.2f\n", seconds,name, width, height, 1000.0 / seconds, width*height*pixel_size*1000.0/ (1024*1024*seconds));
+
+        height /= 2;
+        free(buffer);
+    }
+}
+
+int main(int argc, char *argv[])
+{
+    struct uca *u = uca_init(NULL);
+    if (u == NULL) {
+        printf("Couldn't find a camera\n");
+        return 1;
+    }
+
+    printf("# camera;width;height;experiment;frames-per-second;throughput in MB/s\n");
+
+    /* take first camera */
+    struct uca_camera *cam = u->cameras;
+    while (cam != NULL) {
+        benchmark_cam(cam);
+        cam = cam->next;
+    }
+
+    uca_destroy(u);
+    return 0;
+}
-- 
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