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
|
//
// Copyright 2013,2017 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef INCLUDED_LIBUHD_USRP_COMMON_RECV_PACKET_DEMUXER_3000_HPP
#define INCLUDED_LIBUHD_USRP_COMMON_RECV_PACKET_DEMUXER_3000_HPP
#include <uhd/config.hpp>
#include <uhd/transport/zero_copy.hpp>
#include <uhd/utils/log.hpp>
#include <uhd/types/time_spec.hpp>
#include <uhd/utils/byteswap.hpp>
#include <boost/thread.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <queue>
#include <map>
#include <stdint.h>
namespace uhd{ namespace usrp{
struct recv_packet_demuxer_3000 : boost::enable_shared_from_this<recv_packet_demuxer_3000>
{
typedef boost::shared_ptr<recv_packet_demuxer_3000> sptr;
static sptr make(transport::zero_copy_if::sptr xport)
{
return sptr(new recv_packet_demuxer_3000(xport));
}
recv_packet_demuxer_3000(transport::zero_copy_if::sptr xport):
_xport(xport)
{/*NOP*/}
transport::managed_recv_buffer::sptr get_recv_buff(const uint32_t sid, const double timeout)
{
const time_spec_t exit_time = time_spec_t(timeout) + time_spec_t::get_system_time();
transport::managed_recv_buffer::sptr buff;
buff = _internal_get_recv_buff(sid, timeout);
while (not buff) //loop until timeout
{
const time_spec_t delta = exit_time - time_spec_t::get_system_time();
const double new_timeout = delta.get_real_secs();
if (new_timeout < 0.0) break;
buff = _internal_get_recv_buff(sid, new_timeout);
}
return buff;
}
transport::managed_recv_buffer::sptr _internal_get_recv_buff(const uint32_t sid, const double timeout)
{
transport::managed_recv_buffer::sptr buff;
//----------------------------------------------------------
//-- Check the queue to see if we already have a buffer
//----------------------------------------------------------
{
boost::mutex::scoped_lock l(mutex);
queue_type_t &queue = _queues[sid];
if (not queue.empty())
{
buff = queue.front();
queue.front().reset();
queue.pop();
return buff;
}
}
{
buff = _xport->get_recv_buff(timeout);
if (buff)
{
const uint32_t new_sid = uhd::wtohx(buff->cast<const uint32_t *>()[1]);
if (new_sid != sid)
{
boost::mutex::scoped_lock l(mutex);
if (_queues.count(new_sid) == 0) UHD_LOGGER_ERROR("STREAMER")
<< "recv packet demuxer unexpected sid 0x" << std::hex << new_sid << std::dec
;
else _queues[new_sid].push(buff);
buff.reset();
}
}
}
return buff;
}
void realloc_sid(const uint32_t sid)
{
boost::mutex::scoped_lock l(mutex);
while(not _queues[sid].empty()) //allocated and clears if already allocated
{
_queues[sid].pop();
}
}
transport::zero_copy_if::sptr make_proxy(const uint32_t sid);
typedef std::queue<transport::managed_recv_buffer::sptr> queue_type_t;
std::map<uint32_t, queue_type_t> _queues;
transport::zero_copy_if::sptr _xport;
boost::mutex mutex;
};
struct recv_packet_demuxer_proxy_3000 : transport::zero_copy_if
{
recv_packet_demuxer_proxy_3000(recv_packet_demuxer_3000::sptr demux, transport::zero_copy_if::sptr xport, const uint32_t sid):
_demux(demux), _xport(xport), _sid(sid)
{
_demux->realloc_sid(_sid); //causes clear
}
~recv_packet_demuxer_proxy_3000(void)
{
_demux->realloc_sid(_sid); //causes clear
}
size_t get_num_recv_frames(void) const {return _xport->get_num_recv_frames();}
size_t get_recv_frame_size(void) const {return _xport->get_recv_frame_size();}
transport::managed_recv_buffer::sptr get_recv_buff(double timeout)
{
return _demux->get_recv_buff(_sid, timeout);
}
size_t get_num_send_frames(void) const {return _xport->get_num_send_frames();}
size_t get_send_frame_size(void) const {return _xport->get_send_frame_size();}
transport::managed_send_buffer::sptr get_send_buff(double timeout)
{
return _xport->get_send_buff(timeout);
}
recv_packet_demuxer_3000::sptr _demux;
transport::zero_copy_if::sptr _xport;
const uint32_t _sid;
};
inline transport::zero_copy_if::sptr recv_packet_demuxer_3000::make_proxy(const uint32_t sid)
{
return transport::zero_copy_if::sptr(new recv_packet_demuxer_proxy_3000(this->shared_from_this(), _xport, sid));
}
}} //namespace uhd::usrp
#endif /* INCLUDED_LIBUHD_USRP_COMMON_RECV_PACKET_DEMUXER_3000_HPP */
|
