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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
#pragma once
#include <vector>
#include <memory>
#include <exception>
#include <functional>
#include <assert.h>
class TPCMBufferTooSmall : public std::exception {
virtual const char* what() const throw() {
return "PCM buffer too small";
}
};
class TWrongReadBuffer : public std::exception {
virtual const char* what() const throw() {
return "PCM buffer too small";
}
};
class TEndOfRead : public std::exception {
virtual const char* what() const throw() {
return "End of reader";
}
};
template <class T>
class IPCMWriter {
public:
virtual void Write(const std::vector<std::vector<T>>& data , const uint32_t size) const = 0;
IPCMWriter() {};
virtual ~IPCMWriter() {};
};
template <class T>
class IPCMReader {
public:
virtual void Read(std::vector<std::vector<T>>& data , const uint32_t size) const = 0;
IPCMReader() {};
virtual ~IPCMReader() {};
};
template<class T>
class TPCMEngine {
std::vector<std::vector<T>> Buffers;
public:
typedef std::unique_ptr<IPCMWriter<T>> TWriterPtr;
typedef std::unique_ptr<IPCMReader<T>> TReaderPtr;
private:
TWriterPtr Writer;
TReaderPtr Reader;
uint64_t Processed = 0;
public:
TPCMEngine(const int32_t bufSize, const int32_t numChannels) {
InitBuffers(bufSize, numChannels);
}
TPCMEngine(const int32_t bufSize, const int32_t numChannels, TWriterPtr&& writer)
: Writer(std::move(writer)) {
InitBuffers(bufSize, numChannels);
}
TPCMEngine(const int32_t bufSize, const int32_t numChannels, TReaderPtr&& reader)
: Reader(std::move(reader)) {
InitBuffers(bufSize, numChannels);
}
TPCMEngine(const int32_t bufSize, const int32_t numChannels, TWriterPtr&& writer, TReaderPtr&& reader)
: Writer(std::move(writer))
, Reader(std::move(reader)) {
InitBuffers(bufSize, numChannels);
}
typedef std::function<void(std::vector<T>* data)> TProcessLambda;
uint64_t ApplyProcess(int step, TProcessLambda lambda) {
if (step > Buffers.size()) {
throw TPCMBufferTooSmall();
}
if (Reader) {
const uint32_t sizeToRead = Buffers.size();
Reader->Read(Buffers, sizeToRead);
}
int32_t lastPos = 0;
for (int i = 0; i + step <= Buffers.size(); i+=step) {
lambda(&Buffers[i]);
lastPos = i + step;
}
assert(lastPos == Buffers.size());
if (Writer) {
Writer->Write(Buffers, lastPos);
}
Processed += lastPos;
return Processed;
}
private:
void InitBuffers(const int32_t bufSize, const int32_t numChannels) {
Buffers.resize(bufSize);
for (std::vector<T>& channel : Buffers) {
channel.resize(numChannels);
}
}
};
|
