-
Notifications
You must be signed in to change notification settings - Fork 26
/
input_source_from_vector.cc
70 lines (59 loc) · 2.72 KB
/
input_source_from_vector.cc
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
// ------------------------------------------------------------------------ //
// Copyright 2021 SPTK Working Group //
// //
// Licensed under the Apache License, Version 2.0 (the "License"); //
// you may not use this file except in compliance with the License. //
// You may obtain a copy of the License at //
// //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
// Unless required by applicable law or agreed to in writing, software //
// distributed under the License is distributed on an "AS IS" BASIS, //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and //
// limitations under the License. //
// ------------------------------------------------------------------------ //
#include "SPTK/input/input_source_from_vector.h"
#include <algorithm> // std::copy, std::fill_n
#include <cstddef> // std::size_t
namespace sptk {
InputSourceFromVector::InputSourceFromVector(bool zero_padding, int read_size,
std::vector<double>* input_vector)
: zero_padding_(zero_padding),
read_size_(read_size),
vector_size_(
NULL == input_vector ? 0 : static_cast<int>(input_vector->size())),
input_vector_(input_vector),
position_(0),
is_valid_(true) {
if (read_size_ <= 0 || NULL == input_vector_) {
is_valid_ = false;
return;
}
}
bool InputSourceFromVector::Get(std::vector<double>* buffer) {
if (NULL == buffer || !is_valid_ || vector_size_ <= position_) {
return false;
}
const int next_position(position_ + read_size_);
if (!zero_padding_ && vector_size_ < next_position) {
return false;
}
if (buffer->size() != static_cast<std::size_t>(read_size_)) {
buffer->resize(read_size_);
}
if (next_position <= vector_size_) {
std::copy(input_vector_->begin() + position_,
input_vector_->begin() + next_position, buffer->begin());
} else {
const int num_nonzeros(vector_size_ - position_);
const int num_zeros(next_position - vector_size_);
std::copy(input_vector_->begin() + position_,
input_vector_->begin() + position_ + num_nonzeros,
buffer->begin());
std::fill_n(buffer->begin() + num_nonzeros, num_zeros, 0.0);
}
position_ = next_position;
return true;
}
} // namespace sptk