blob: a56dd4b38020410a763a9bfdc1a61e0dcfd1db8a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
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;
};
|
