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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "sigsession.h" | |
22 | ||
23 | #include "logicdata.h" | |
24 | #include "logicdatasnapshot.h" | |
25 | #include "view/logicsignal.h" | |
26 | ||
27 | #include <QDebug> | |
28 | ||
29 | #include <assert.h> | |
30 | ||
31 | using namespace boost; | |
32 | using namespace std; | |
33 | ||
34 | namespace pv { | |
35 | ||
36 | // TODO: This should not be necessary | |
37 | SigSession* SigSession::_session = NULL; | |
38 | ||
39 | SigSession::SigSession() | |
40 | { | |
41 | // TODO: This should not be necessary | |
42 | _session = this; | |
43 | } | |
44 | ||
45 | SigSession::~SigSession() | |
46 | { | |
47 | if(_sampling_thread.get()) | |
48 | _sampling_thread->join(); | |
49 | _sampling_thread.reset(); | |
50 | ||
51 | // TODO: This should not be necessary | |
52 | _session = NULL; | |
53 | } | |
54 | ||
55 | void SigSession::load_file(const std::string &name) | |
56 | { | |
57 | if (sr_session_load(name.c_str()) == SR_OK) { | |
58 | /* sigrok session file */ | |
59 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
60 | sr_session_start(); | |
61 | sr_session_run(); | |
62 | sr_session_stop(); | |
63 | } | |
64 | } | |
65 | ||
66 | void SigSession::start_capture(struct sr_dev_inst *sdi, | |
67 | uint64_t record_length, uint64_t sample_rate) | |
68 | { | |
69 | // Check sampling isn't already active | |
70 | if(_sampling_thread.get()) | |
71 | _sampling_thread->join(); | |
72 | ||
73 | _sampling_thread.reset(new boost::thread( | |
74 | &SigSession::sample_thread_proc, this, sdi, | |
75 | record_length, sample_rate)); | |
76 | } | |
77 | ||
78 | vector< shared_ptr<view::Signal> > SigSession::get_signals() | |
79 | { | |
80 | lock_guard<mutex> lock(_signals_mutex); | |
81 | return _signals; | |
82 | } | |
83 | ||
84 | boost::shared_ptr<LogicData> SigSession::get_data() | |
85 | { | |
86 | return _logic_data; | |
87 | } | |
88 | ||
89 | void SigSession::sample_thread_proc(struct sr_dev_inst *sdi, | |
90 | uint64_t record_length, uint64_t sample_rate) | |
91 | { | |
92 | sr_session_new(); | |
93 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
94 | ||
95 | if (sr_session_dev_add(sdi) != SR_OK) { | |
96 | qDebug() << "Failed to use device."; | |
97 | sr_session_destroy(); | |
98 | return; | |
99 | } | |
100 | ||
101 | if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES, | |
102 | &record_length) != SR_OK) { | |
103 | qDebug() << "Failed to configure time-based sample limit."; | |
104 | sr_session_destroy(); | |
105 | return; | |
106 | } | |
107 | ||
108 | if (sr_dev_config_set(sdi, SR_HWCAP_SAMPLERATE, | |
109 | &sample_rate) != SR_OK) { | |
110 | qDebug() << "Failed to configure samplerate."; | |
111 | sr_session_destroy(); | |
112 | return; | |
113 | } | |
114 | ||
115 | if (sr_session_start() != SR_OK) { | |
116 | qDebug() << "Failed to start session."; | |
117 | return; | |
118 | } | |
119 | ||
120 | sr_session_run(); | |
121 | sr_session_destroy(); | |
122 | } | |
123 | ||
124 | void SigSession::data_feed_in(const struct sr_dev_inst *sdi, | |
125 | struct sr_datafeed_packet *packet) | |
126 | { | |
127 | using view::LogicSignal; | |
128 | ||
129 | assert(sdi); | |
130 | assert(packet); | |
131 | ||
132 | switch (packet->type) { | |
133 | case SR_DF_HEADER: | |
134 | { | |
135 | lock_guard<mutex> lock(_signals_mutex); | |
136 | _signals.clear(); | |
137 | break; | |
138 | } | |
139 | ||
140 | case SR_DF_META_LOGIC: | |
141 | { | |
142 | assert(packet->payload); | |
143 | const sr_datafeed_meta_logic &meta_logic = | |
144 | *(sr_datafeed_meta_logic*)packet->payload; | |
145 | ||
146 | { | |
147 | lock_guard<mutex> lock(_data_mutex); | |
148 | ||
149 | // Create an empty LogiData for coming data snapshots | |
150 | _logic_data.reset(new LogicData(meta_logic)); | |
151 | assert(_logic_data); | |
152 | if(!_logic_data) | |
153 | break; | |
154 | } | |
155 | ||
156 | { | |
157 | lock_guard<mutex> lock(_signals_mutex); | |
158 | ||
159 | // Add the signals | |
160 | for (int i = 0; i < meta_logic.num_probes; i++) | |
161 | { | |
162 | const sr_probe *const probe = | |
163 | (const sr_probe*)g_slist_nth_data( | |
164 | sdi->probes, i); | |
165 | if(probe->enabled) | |
166 | { | |
167 | shared_ptr<LogicSignal> signal( | |
168 | new LogicSignal(probe->name, | |
169 | _logic_data, | |
170 | probe->index)); | |
171 | _signals.push_back(signal); | |
172 | } | |
173 | } | |
174 | ||
175 | signals_changed(); | |
176 | break; | |
177 | } | |
178 | } | |
179 | ||
180 | case SR_DF_LOGIC: | |
181 | { | |
182 | lock_guard<mutex> lock(_data_mutex); | |
183 | assert(packet->payload); | |
184 | if(!_cur_logic_snapshot) | |
185 | { | |
186 | // Create a new data snapshot | |
187 | _cur_logic_snapshot = shared_ptr<LogicDataSnapshot>( | |
188 | new LogicDataSnapshot( | |
189 | *(sr_datafeed_logic*)packet->payload)); | |
190 | _logic_data->push_snapshot(_cur_logic_snapshot); | |
191 | } | |
192 | else | |
193 | { | |
194 | // Append to the existing data snapshot | |
195 | _cur_logic_snapshot->append_payload( | |
196 | *(sr_datafeed_logic*)packet->payload); | |
197 | } | |
198 | ||
199 | break; | |
200 | } | |
201 | ||
202 | case SR_DF_END: | |
203 | { | |
204 | { | |
205 | lock_guard<mutex> lock(_data_mutex); | |
206 | _cur_logic_snapshot.reset(); | |
207 | } | |
208 | data_updated(); | |
209 | break; | |
210 | } | |
211 | } | |
212 | } | |
213 | ||
214 | void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi, | |
215 | struct sr_datafeed_packet *packet) | |
216 | { | |
217 | assert(_session); | |
218 | _session->data_feed_in(sdi, packet); | |
219 | } | |
220 | ||
221 | } // namespace pv |