add to archive

1 files changed, 42 insertions, 0 deletions

diff --git a/FESgui/src/audiobuffer.h b/FESgui/src/audiobuffer.h
new file mode 100644
index 0000000..a56dd4b
--- /dev/null
+++ b/FESgui/src/audiobuffer.h
@@ -0,0 +1,42 @@
+#pragma once
+
+
+#define min(a,b) (a<b?a:b)
+#define max(a,b) (a>b?a:b)
+
+class Buffer{
+public:
+    Buffer(size_t sz=0){
+        if (sz){
+            data =new float[sz];
+            memset(data,0,sz*sizeof(float));
+            size=sz;
+        }
+        else data=NULL;
+    }
+    ~Buffer(){
+        if (data){
+            delete[] data; //why is this throwing an error
+        }
+    } 
+    void add(float * input, int num){
+        //this assumes that num < size
+        memcpy(&data[writePoint],input,min(num,size-writePoint)*sizeof(float));
+        if (size-writePoint<num){ //we have to wrap
+            //copy the remaining chunk to the start and set the new writePoint
+            memcpy(data,&input[size-writePoint],(num-(size-writePoint))*sizeof(float));
+            writePoint=num-(size-writePoint);
+        }
+        else writePoint+=num;
+    }
+    float operator [] (int i) const {
+        return data[(writePoint>i?writePoint-i:size-(i-writePoint))-1];
+    }
+    float& operator [] (int i) {
+        return data[(writePoint>i?writePoint-i:size-(i-writePoint))-1];
+    }
+private:
+    size_t size;
+    float *data;
+    int writePoint;
+};
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