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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*
* This file is part of AtracDEnc.
*
* AtracDEnc is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* AtracDEnc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with AtracDEnc; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include <vector>
#include <memory>
#include <exception>
#include <functional>
#include <cstdlib>
#include <iostream>
#include <assert.h>
#include <string.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 TPCMBuffer {
std::vector<T> Buf_;
uint16_t NumChannels;
public:
TPCMBuffer(uint16_t bufSize, uint8_t numChannels)
: NumChannels(numChannels)
{
Buf_.resize((size_t)bufSize * numChannels);
}
size_t Size() {
return Buf_.size() / NumChannels;
}
T* operator[](size_t pos) {
size_t rpos = pos * NumChannels;
if (rpos >= Buf_.size()) {
std::cerr << "attempt to access out of buffer pos: " << pos << std::endl;
std::abort();
}
return &Buf_[rpos];
}
const T* operator[](size_t pos) const {
size_t rpos = pos * NumChannels;
if (rpos >= Buf_.size()) {
std::cerr << "attempt to access out of buffer pos: " << pos << std::endl;
std::abort();
}
return &Buf_[rpos];
}
uint16_t Channels() const {
return NumChannels;
}
void Zero(size_t pos, size_t len) {
assert((pos + len) * NumChannels <= Buf_.size());
memset(&Buf_[pos*NumChannels], 0, len*NumChannels);
}
};
template <class T>
class IPCMWriter {
public:
virtual void Write(const TPCMBuffer<T>& data , const uint32_t size) const = 0;
IPCMWriter() {};
virtual ~IPCMWriter() {};
};
template <class T>
class IPCMReader {
public:
virtual void Read(TPCMBuffer<T>& data , const uint32_t size) const = 0;
IPCMReader() {};
virtual ~IPCMReader() {};
};
template<class T>
class TPCMEngine {
public:
typedef std::unique_ptr<IPCMWriter<T>> TWriterPtr;
typedef std::unique_ptr<IPCMReader<T>> TReaderPtr;
struct ProcessMeta {
const uint16_t Channels;
};
private:
TPCMBuffer<T> Buffer;
TWriterPtr Writer;
TReaderPtr Reader;
uint64_t Processed = 0;
public:
TPCMEngine(uint16_t bufSize, uint8_t numChannels)
: Buffer(bufSize, numChannels) {
}
TPCMEngine(uint16_t bufSize, uint8_t numChannels, TWriterPtr&& writer)
: Buffer(bufSize, numChannels)
, Writer(std::move(writer)) {
}
TPCMEngine(uint16_t bufSize, uint8_t numChannels, TReaderPtr&& reader)
: Buffer(bufSize, numChannels)
, Reader(std::move(reader)) {
}
TPCMEngine(uint16_t bufSize, uint8_t numChannels, TWriterPtr&& writer, TReaderPtr&& reader)
: Buffer(bufSize, numChannels)
, Writer(std::move(writer))
, Reader(std::move(reader)) {
}
typedef std::function<void(T* data, const ProcessMeta& meta)> TProcessLambda;
uint64_t ApplyProcess(size_t step, TProcessLambda lambda) {
if (step > Buffer.Size()) {
throw TPCMBufferTooSmall();
}
if (Reader) {
const uint32_t sizeToRead = Buffer.Size();
Reader->Read(Buffer, sizeToRead);
}
size_t lastPos = 0;
ProcessMeta meta = {Buffer.Channels()};
for (size_t i = 0; i + step <= Buffer.Size(); i+=step) {
lambda(Buffer[i], meta);
lastPos = i + step;
}
assert(lastPos == Buffer.Size());
if (Writer) {
Writer->Write(Buffer, lastPos);
}
Processed += lastPos;
return Processed;
}
};
template<class T>
class IProcessor {
public:
virtual typename TPCMEngine<T>::TProcessLambda GetLambda() = 0;
virtual ~IProcessor() {}
};
|
