DecodeSignal: Unpause reliably
[pulseview.git] / pv / views / viewbase.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
5  * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #ifdef ENABLE_DECODE
22 #include <libsigrokdecode/libsigrokdecode.h>
23 #endif
24
25 #include <libsigrokcxx/libsigrokcxx.hpp>
26
27 #include "pv/session.hpp"
28 #include "pv/util.hpp"
29 #include "pv/data/segment.hpp"
30
31 using std::shared_ptr;
32
33 namespace pv {
34 namespace views {
35
36 const int ViewBase::MaxViewAutoUpdateRate = 25; // No more than 25 Hz
37
38 ViewBase::ViewBase(Session &session, bool is_main_view, QWidget *parent) :
39         // Note: Place defaults in ViewBase::reset_view_state(), not here
40         session_(session),
41         is_main_view_(is_main_view)
42 {
43         (void)parent;
44
45         connect(&session_, SIGNAL(signals_changed()),
46                 this, SLOT(signals_changed()));
47         connect(&session_, SIGNAL(capture_state_changed(int)),
48                 this, SLOT(capture_state_updated(int)));
49         connect(&session_, SIGNAL(new_segment(int)),
50                 this, SLOT(on_new_segment(int)));
51
52         connect(&delayed_view_updater_, SIGNAL(timeout()),
53                 this, SLOT(perform_delayed_view_update()));
54         delayed_view_updater_.setSingleShot(true);
55         delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
56 }
57
58 void ViewBase::reset_view_state()
59 {
60         ruler_shift_ = 0;
61         current_segment_ = 0;
62 }
63
64 Session& ViewBase::session()
65 {
66         return session_;
67 }
68
69 const Session& ViewBase::session() const
70 {
71         return session_;
72 }
73
74 void ViewBase::clear_signals()
75 {
76 }
77
78 unordered_set< shared_ptr<data::SignalBase> > ViewBase::signalbases() const
79 {
80         return signalbases_;
81 }
82
83 void ViewBase::clear_signalbases()
84 {
85         for (shared_ptr<data::SignalBase> signalbase : signalbases_) {
86                 disconnect(signalbase.get(), SIGNAL(samples_cleared()),
87                         this, SLOT(on_data_updated()));
88                 disconnect(signalbase.get(), SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)),
89                         this, SLOT(on_samples_added(uint64_t, uint64_t, uint64_t)));
90         }
91
92         signalbases_.clear();
93 }
94
95 void ViewBase::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
96 {
97         signalbases_.insert(signalbase);
98
99         connect(signalbase.get(), SIGNAL(samples_cleared()),
100                 this, SLOT(on_data_updated()));
101         connect(signalbase.get(), SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)),
102                 this, SLOT(on_samples_added(uint64_t, uint64_t, uint64_t)));
103 }
104
105 #ifdef ENABLE_DECODE
106 void ViewBase::clear_decode_signals()
107 {
108 }
109
110 void ViewBase::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
111 {
112         (void)signal;
113 }
114
115 void ViewBase::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
116 {
117         (void)signal;
118 }
119 #endif
120
121 void ViewBase::save_settings(QSettings &settings) const
122 {
123         (void)settings;
124 }
125
126 void ViewBase::restore_settings(QSettings &settings)
127 {
128         (void)settings;
129 }
130
131 void ViewBase::trigger_event(int segment_id, util::Timestamp location)
132 {
133         (void)segment_id;
134         (void)location;
135 }
136
137 void ViewBase::signals_changed()
138 {
139 }
140
141 void ViewBase::on_new_segment(int new_segment_id)
142 {
143         (void)new_segment_id;
144 }
145
146 void ViewBase::on_segment_completed(int new_segment_id)
147 {
148         (void)new_segment_id;
149 }
150
151 void ViewBase::capture_state_updated(int state)
152 {
153         (void)state;
154 }
155
156 void ViewBase::perform_delayed_view_update()
157 {
158 }
159
160 void ViewBase::on_samples_added(uint64_t segment_id, uint64_t start_sample,
161         uint64_t end_sample)
162 {
163         (void)start_sample;
164         (void)end_sample;
165
166         if (segment_id != current_segment_)
167                 return;
168
169         if (!delayed_view_updater_.isActive())
170                 delayed_view_updater_.start();
171 }
172
173 void ViewBase::on_data_updated()
174 {
175         if (!delayed_view_updater_.isActive())
176                 delayed_view_updater_.start();
177 }
178
179 }  // namespace views
180 } // namespace pv