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
|
//
// Copyright 2012 Josh Blum
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#include "element_impl.hpp"
#include <gr_block.h>
gr_block::gr_block(void)
{
//NOP
}
gr_block::gr_block(
const std::string &name,
gr_io_signature_sptr input_signature,
gr_io_signature_sptr output_signature
):
gnuradio::Block(name)
{
this->set_fixed_rate(false);
this->set_input_signature(input_signature);
this->set_output_signature(output_signature);
}
int gr_block::work(
const InputItems &input_items,
const OutputItems &output_items
){
return this->general_work(
(*this)->block->work_noutput_items,
(*this)->block->work_ninput_items,
(*this)->block->work_input_items,
(*this)->block->work_output_items
);
}
void gr_block::forecast(int noutput_items, std::vector<int> &ninputs_req)
{
for (size_t i = 0; i < ninputs_req.size(); i++)
{
ninputs_req[i] = fixed_rate_noutput_to_ninput(noutput_items);
}
}
int gr_block::general_work(
int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items
){
throw std::runtime_error("gr_block subclasses must overload general_work!");
}
void gr_block::set_alignment(const size_t)
{
//TODO
//probably dont need this since buffers always start aligned
//and therefore alignment is always re-acheived
}
bool gr_block::is_unaligned(void)
{
//TODO
//probably dont need this since volk dispatcher checks alignment
//32 byte aligned is good enough for you
return ((*this)->block->work_io_ptr_mask & ptrdiff_t(GRAS_MAX_ALIGNMENT-1)) != 0;
}
size_t gr_block::fixed_rate_noutput_to_ninput(const size_t noutput_items)
{
if (this->fixed_rate())
{
return size_t(0.5 + (noutput_items/this->relative_rate())) + this->history() - 1;
}
else
{
return noutput_items + this->history() - 1;
}
}
size_t gr_block::interpolation(void) const
{
return size_t(1.0*this->relative_rate());
}
void gr_block::set_interpolation(const size_t interp)
{
this->set_relative_rate(1.0*interp);
this->set_output_multiple(interp);
}
size_t gr_block::decimation(void) const
{
return size_t(1.0/this->relative_rate());
}
void gr_block::set_decimation(const size_t decim)
{
this->set_relative_rate(1.0/decim);
}
unsigned gr_block::history(void) const
{
//implement off-by-one history compat
return this->input_config().lookahead_items+1;
}
void gr_block::set_history(unsigned history)
{
gnuradio::InputPortConfig config = this->input_config();
//implement off-by-one history compat
if (history == 0) history++;
config.lookahead_items = history-1;
this->set_input_config(config);
}
int gr_block::max_noutput_items(void) const
{
return this->output_config().maximum_items;
}
void gr_block::set_max_noutput_items(int max_items)
{
gnuradio::OutputPortConfig config = this->output_config();
config.maximum_items = max_items;
this->set_output_config(config);
}
void gr_block::unset_max_noutput_items(void)
{
this->set_max_noutput_items(0);
}
bool gr_block::is_set_max_noutput_items(void) const
{
return this->max_noutput_items() != 0;
}
|
