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0fbda3c2 JH |
1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2014 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 | ||
d2344534 JH |
21 | #include <cassert> |
22 | ||
0fbda3c2 JH |
23 | #include "storesession.h" |
24 | ||
25 | #include <pv/sigsession.h> | |
26 | #include <pv/data/logic.h> | |
27 | #include <pv/data/logicsnapshot.h> | |
28 | #include <pv/view/signal.h> | |
29 | ||
e8d00928 ML |
30 | #include <libsigrok/libsigrok.hpp> |
31 | ||
0fbda3c2 | 32 | using std::deque; |
f9abf97e | 33 | using std::dynamic_pointer_cast; |
3b68d03d | 34 | using std::lock_guard; |
0fbda3c2 JH |
35 | using std::make_pair; |
36 | using std::min; | |
3b68d03d | 37 | using std::mutex; |
0fbda3c2 JH |
38 | using std::pair; |
39 | using std::set; | |
f9abf97e | 40 | using std::shared_ptr; |
0fbda3c2 | 41 | using std::string; |
3b68d03d | 42 | using std::thread; |
0fbda3c2 JH |
43 | using std::vector; |
44 | ||
e8d00928 ML |
45 | using sigrok::Error; |
46 | ||
0fbda3c2 JH |
47 | namespace pv { |
48 | ||
49 | const size_t StoreSession::BlockSize = 1024 * 1024; | |
50 | ||
51 | StoreSession::StoreSession(const std::string &file_name, | |
52 | const SigSession &session) : | |
53 | _file_name(file_name), | |
54 | _session(session), | |
3b68d03d | 55 | _interrupt(false), |
0fbda3c2 JH |
56 | _units_stored(0), |
57 | _unit_count(0) | |
58 | { | |
59 | } | |
60 | ||
61 | StoreSession::~StoreSession() | |
62 | { | |
63 | wait(); | |
64 | } | |
65 | ||
e40b2f29 | 66 | pair<int, int> StoreSession::progress() const |
0fbda3c2 | 67 | { |
b101c41e | 68 | return make_pair(_units_stored.load(), _unit_count.load()); |
0fbda3c2 JH |
69 | } |
70 | ||
71 | const QString& StoreSession::error() const | |
72 | { | |
73 | lock_guard<mutex> lock(_mutex); | |
74 | return _error; | |
75 | } | |
76 | ||
77 | bool StoreSession::start() | |
78 | { | |
79 | set< shared_ptr<data::SignalData> > data_set = | |
80 | _session.get_data(); | |
81 | const vector< shared_ptr<view::Signal> > sigs = | |
82 | _session.get_signals(); | |
83 | ||
84 | // Check we have logic data | |
85 | if (data_set.empty() || sigs.empty()) { | |
86 | _error = tr("No data to save."); | |
87 | return false; | |
88 | } | |
89 | ||
90 | if (data_set.size() > 1) { | |
91 | _error = tr("PulseView currently only has support for " | |
92 | "storing a single data stream."); | |
93 | return false; | |
94 | } | |
95 | ||
96 | // Get the logic data | |
97 | //shared_ptr<data::SignalData | |
98 | shared_ptr<data::Logic> data; | |
99 | if (!(data = dynamic_pointer_cast<data::Logic>(*data_set.begin()))) { | |
100 | _error = tr("PulseView currently only has support for " | |
101 | "storing a logic data."); | |
102 | return false; | |
103 | } | |
104 | ||
105 | // Get the snapshot | |
106 | const deque< shared_ptr<data::LogicSnapshot> > &snapshots = | |
107 | data->get_snapshots(); | |
108 | ||
109 | if (snapshots.empty()) { | |
110 | _error = tr("No snapshots to save."); | |
111 | return false; | |
112 | } | |
113 | ||
114 | const shared_ptr<data::LogicSnapshot> snapshot(snapshots.front()); | |
115 | assert(snapshot); | |
116 | ||
6ac6242b ML |
117 | // Make a list of channels |
118 | char **const channels = new char*[sigs.size() + 1]; | |
0fbda3c2 JH |
119 | for (size_t i = 0; i < sigs.size(); i++) { |
120 | shared_ptr<view::Signal> sig(sigs[i]); | |
121 | assert(sig); | |
6ac6242b | 122 | channels[i] = strdup(sig->get_name().toUtf8().constData()); |
0fbda3c2 | 123 | } |
6ac6242b | 124 | channels[sigs.size()] = NULL; |
0fbda3c2 JH |
125 | |
126 | // Begin storing | |
e8d00928 ML |
127 | try { |
128 | SigSession::_sr_session->begin_save(_file_name); | |
129 | } catch (Error error) { | |
0fbda3c2 JH |
130 | _error = tr("Error while saving."); |
131 | return false; | |
132 | } | |
133 | ||
6ac6242b | 134 | // Delete the channels array |
0fbda3c2 | 135 | for (size_t i = 0; i <= sigs.size(); i++) |
6ac6242b ML |
136 | free(channels[i]); |
137 | delete[] channels; | |
0fbda3c2 | 138 | |
3b68d03d | 139 | _thread = std::thread(&StoreSession::store_proc, this, snapshot); |
0fbda3c2 JH |
140 | return true; |
141 | } | |
142 | ||
143 | void StoreSession::wait() | |
144 | { | |
6d483b8b MC |
145 | if (_thread.joinable()) |
146 | _thread.join(); | |
0fbda3c2 JH |
147 | } |
148 | ||
149 | void StoreSession::cancel() | |
150 | { | |
3b68d03d | 151 | _interrupt = true; |
0fbda3c2 JH |
152 | } |
153 | ||
154 | void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot) | |
155 | { | |
156 | assert(snapshot); | |
157 | ||
e40b2f29 MC |
158 | uint64_t start_sample = 0, sample_count; |
159 | unsigned progress_scale = 0; | |
0fbda3c2 JH |
160 | |
161 | /// TODO: Wrap this in a std::unique_ptr when we transition to C++11 | |
162 | uint8_t *const data = new uint8_t[BlockSize]; | |
163 | assert(data); | |
164 | ||
165 | const int unit_size = snapshot->unit_size(); | |
166 | assert(unit_size != 0); | |
167 | ||
e40b2f29 MC |
168 | sample_count = snapshot->get_sample_count(); |
169 | ||
170 | // Qt needs the progress values to fit inside an int. If they would | |
171 | // not, scale the current and max values down until they do. | |
172 | while ((sample_count >> progress_scale) > INT_MAX) | |
173 | progress_scale ++; | |
174 | ||
175 | _unit_count = sample_count >> progress_scale; | |
0fbda3c2 JH |
176 | |
177 | const unsigned int samples_per_block = BlockSize / unit_size; | |
178 | ||
e40b2f29 | 179 | while (!_interrupt && start_sample < sample_count) |
0fbda3c2 JH |
180 | { |
181 | progress_updated(); | |
182 | ||
183 | const uint64_t end_sample = min( | |
e40b2f29 | 184 | start_sample + samples_per_block, sample_count); |
0fbda3c2 JH |
185 | snapshot->get_samples(data, start_sample, end_sample); |
186 | ||
e8d00928 ML |
187 | size_t length = end_sample - start_sample; |
188 | ||
189 | try { | |
190 | SigSession::_sr_session->append(data, length, unit_size); | |
191 | } catch (Error error) { | |
0fbda3c2 JH |
192 | _error = tr("Error while saving."); |
193 | break; | |
194 | } | |
195 | ||
196 | start_sample = end_sample; | |
e40b2f29 | 197 | _units_stored = start_sample >> progress_scale; |
0fbda3c2 JH |
198 | } |
199 | ||
b101c41e | 200 | _unit_count = 0; |
0fbda3c2 JH |
201 | progress_updated(); |
202 | ||
203 | delete[] data; | |
204 | } | |
205 | ||
206 | } // pv |