Diff: CircularBuf.cpp

Revision:

17:604f9c4bd6d3

Parent:

16:d0d3bb2fc3ce

Child:

20:e068469ffb89

--- a/CircularBuf.cpp	Fri Apr 20 15:23:53 2018 +0000
+++ b/CircularBuf.cpp	Fri Apr 20 16:07:47 2018 +0000
@@ -1,10 +1,70 @@
 #include "CircularBuf.h"
 
 template <class T>
-CircularBuf::CircularBuf(unsigned int size) {}
+CircularBuf::CircularBuf(unsigned int size) : _size(size) {
+    _data = new T[size];
+}
+
+template <class T>
+CircularBuf::~CircularBuf() {
+    delete _data;
+}
+
+template <class T>
+unsigned int CircularBuf::push(T* data, unsigned int size) {
+    unsigned int cnt = 0;
+    
+    for (int i = 0; i < size; i++) {
+        unsigned int next = _head + 1;
+        
+        if (next >= _size)
+            next = 0;
+            
+        if (next == _tail)
+            return cnt;
+            
+        _data[next] = data[cnt];
+        _head = next;
+        cnt++;
+    }
+    
+    return cnt;
+}
 
 template <class T>
-CircularBuf::~CircularBuf() {}
+unsigned int CircularBuf::pop(T* data, unsigned int size) {
+    unsigned int cnt = 0;
+    
+    for (int i = 0; i < size; i++) {
+        unsigned int next = _tail + 1;
+        
+        if (next >= size)
+            next = 0;
+            
+        if (next == _head)
+            return cnt;
+            
+        data[cnt] = _data[next];
+        _tail = next;
+        cnt++;
+    }
+    
+    return cnt;
+}
 
 template <class T>
-void CircularBuf::push()
\ No newline at end of file
+unsigned int CircularBuf::size() {
+    int s = _head - _tail;
+    
+    // If buffer overlaps end
+    if (s < 0)
+        s += _size;
+        
+    return s;
+}
+
+template <class T>
+void CircularBuf::clear() {
+    _head = 0;
+    _tail = 0;
+}
\ No newline at end of file