Diff: RingBuf.cpp

Revision:

35:7838543282c2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RingBuf.cpp	Thu Jul 13 00:44:49 2017 +0000
@@ -0,0 +1,50 @@
+#include "RingBuf.h"
+
+RingBuf::RingBuf(int _size)
+{
+    buf = new RingBufType[_size];
+    size = _size;
+    wp = 0;
+    rp = 0;
+    latest = -1;
+}
+    
+RingBuf::~RingBuf()
+{
+    delete [] buf;
+}
+
+void RingBuf::push(RingBufType *d)
+{
+    latest = wp;
+    buf[wp++] = *d;
+    wp %= size;
+}
+RingBufType* RingBuf::pop(void)
+{
+    if (rp == wp) return NULL;
+    RingBufType *d = &buf[rp++];
+    rp %= size;
+    return d;
+}
+int RingBuf::len_get(void)
+{
+    int i = wp - rp;
+    if (i < 0) i += size; 
+    return i;   
+}
+int RingBuf::size_get(void)
+{
+    return size;
+}
+void RingBuf::clear(void)
+{
+    rp = 0;
+    wp = 0;
+}
+RingBufType* RingBuf::peek(int p)
+{
+    if (p < 0 || p >= size) return NULL;
+    return &buf[p];
+}
+