Diff: RingBuffer/RingBuffer.cpp

Revision:

0:3695886f3495

diff -r 000000000000 -r 3695886f3495 RingBuffer/RingBuffer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RingBuffer/RingBuffer.cpp	Wed Sep 19 10:58:16 2012 +0000
@@ -0,0 +1,146 @@
+
+
+#include "RingBuffer.h"
+//Serial debug(USBTX,USBRX);
+
+RingBuffer::RingBuffer()
+{
+    Start = 0;
+    Finish = 0;
+    for(int i = 0; i < RBLENGTH; i++)
+    {
+        for(int j = 0; j<RBWIDTH; j++)
+        {
+            Buffer[i][j] = 0;
+        }
+    }
+    //debug.baud(115200);
+}
+
+int RingBuffer::addToBuffer(int* input)
+{
+    if(Finish == Start && Samples != 0)
+    {
+        return -1;     
+    }
+    else
+    {
+        for(int i = 0; i < RBWIDTH; i++)
+        {
+            Buffer[Finish][i] = input[i];
+        }
+        sortFinishNS();
+        return 0;
+    }
+    
+}
+
+
+int RingBuffer::addToBufferS(int input, int across)
+{
+    Buffer[Finish][across] = input;
+    return 0;
+}
+
+
+
+int RingBuffer::nextBuffer()
+{
+    sortFinishNS();
+    return 0;
+}
+
+
+
+void RingBuffer::readFirst(int* output)
+{
+    for(int i = 0; i < RBWIDTH; i++)
+        {
+            output[i] = Buffer[Start][i];
+        }
+}
+
+int RingBuffer::readFirstS(int across)
+{
+    return Buffer[Start][across];
+}
+
+
+
+void RingBuffer::readAt(int* output, int at)
+{
+    for(int i = 0; i < RBWIDTH; i++)
+        {
+            output[i] = Buffer[at][i];
+        }
+}
+
+int RingBuffer::readAtS(int at, int across)
+{
+    return Buffer[at][across];
+}
+
+
+
+void RingBuffer::readLast(int*output)
+{
+     for(int i = 0; i < RBWIDTH; i++)
+        {
+            output[i] = Buffer[Finish-1][i];
+        }
+}
+
+
+int RingBuffer::readLastS(int across)
+{
+    return Buffer[Finish-1][across];
+}
+
+void RingBuffer::usedFirst()
+{
+    sortStartUS();
+}
+
+void RingBuffer::usedLast()
+{
+    Finish--;
+    Samples--;
+}
+
+int RingBuffer::numberStored()
+{
+    if(Samples > RBLENGTH)
+    {
+        if(Finish < Start)
+        {
+            Samples = Finish + (RBLENGTH - Start);
+        }
+        else
+        {
+            Samples = Start - Finish;
+        }
+    }
+    return Samples;
+}
+
+void RingBuffer::sortFinishNS()
+{
+    Finish++;
+    Samples++;
+    if(Finish == RBLENGTH)
+    {
+        Finish = 0;
+        //debug.printf("\n\rBOO! %3i %3i\n\r",Start, Finish);
+    }
+    
+}
+
+void RingBuffer::sortStartUS()
+{
+    Start++;
+    Samples--;
+    if(Start == RBLENGTH)
+    {
+        Start = 0;
+    }
+}
\ No newline at end of file