From 4220131160f8713e78ff58fe0a7bff1fb16984ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Mon, 19 Dec 2016 15:36:40 +0100
Subject: [PATCH] [apps/statistics] Create a model data

Change-Id: Iad946d1a1bc27aaea985f73d87163e8368206d40
---
 apps/statistics/Makefile |  1 +
 apps/statistics/data.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 apps/statistics/data.h   | 26 ++++++++++++++++++++++++++
 3 files changed, 65 insertions(+)
 create mode 100644 apps/statistics/data.cpp
 create mode 100644 apps/statistics/data.h

diff --git a/apps/statistics/Makefile b/apps/statistics/Makefile
index 7518d7d97..35ed9e716 100644
--- a/apps/statistics/Makefile
+++ b/apps/statistics/Makefile
@@ -2,6 +2,7 @@ app_objs += $(addprefix apps/statistics/,\
   app.o\
   box_controller.o\
   calculation_controller.o\
+  data.o\
   data_controller.o\
   histogram_controller.o\
 )
diff --git a/apps/statistics/data.cpp b/apps/statistics/data.cpp
new file mode 100644
index 000000000..38820b5c6
--- /dev/null
+++ b/apps/statistics/data.cpp
@@ -0,0 +1,38 @@
+#include "data.h"
+
+namespace Statistics {
+
+Data::Data() :
+  m_numberOfPairs(0)
+{
+}
+
+int Data::numberOfPairs() const {
+  return m_numberOfPairs;
+}
+
+float Data::valueAtIndex(int index) {
+  return m_values[index];
+}
+
+int Data::sizeAtIndex(int index) {
+  return m_sizes[index];
+}
+
+void Data::setValueAtIndex(float value, int index) {
+  m_values[index] = value;
+  if (index >= m_numberOfPairs) {
+    m_sizes[index] = 0;
+    m_numberOfPairs++;
+  }
+}
+
+void Data::setSizeAtIndex(int size, int index) {
+  m_sizes[index] = size;
+  if (index >= m_numberOfPairs) {
+    m_values[index] = 0.0f;
+    m_numberOfPairs++;
+  }
+}
+
+}
diff --git a/apps/statistics/data.h b/apps/statistics/data.h
new file mode 100644
index 000000000..668729ab7
--- /dev/null
+++ b/apps/statistics/data.h
@@ -0,0 +1,26 @@
+#ifndef STATISTICS_DATA_H
+#define STATISTICS_DATA_H
+
+namespace Statistics {
+
+class Data {
+public:
+  Data();
+  // Delete the implicit copy constructor: the object is heavy
+  Data(const Data&) = delete;
+  int numberOfPairs() const;
+  float valueAtIndex(int index);
+  int sizeAtIndex(int index);
+  void setValueAtIndex(float value, int index);
+  void setSizeAtIndex(int size, int index);
+  // TODO: decide the max number of elements after optimization
+  constexpr static int k_maxNumberOfPairs = 500;
+private:
+  int m_sizes[k_maxNumberOfPairs];
+  float m_values[k_maxNumberOfPairs];
+  int m_numberOfPairs;
+};
+
+}
+
+#endif