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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 | ||
21 | #include "storesession.h" | |
22 | ||
23 | #include <pv/sigsession.h> | |
24 | #include <pv/data/logic.h> | |
25 | #include <pv/data/logicsnapshot.h> | |
26 | #include <pv/view/signal.h> | |
27 | ||
0fbda3c2 | 28 | using std::deque; |
f9abf97e | 29 | using std::dynamic_pointer_cast; |
3b68d03d | 30 | using std::lock_guard; |
0fbda3c2 JH |
31 | using std::make_pair; |
32 | using std::min; | |
3b68d03d | 33 | using std::mutex; |
0fbda3c2 JH |
34 | using std::pair; |
35 | using std::set; | |
f9abf97e | 36 | using std::shared_ptr; |
0fbda3c2 | 37 | using std::string; |
3b68d03d | 38 | using std::thread; |
0fbda3c2 JH |
39 | using std::vector; |
40 | ||
41 | namespace pv { | |
42 | ||
43 | const size_t StoreSession::BlockSize = 1024 * 1024; | |
44 | ||
45 | StoreSession::StoreSession(const std::string &file_name, | |
46 | const SigSession &session) : | |
47 | _file_name(file_name), | |
48 | _session(session), | |
3b68d03d | 49 | _interrupt(false), |
0fbda3c2 JH |
50 | _units_stored(0), |
51 | _unit_count(0) | |
52 | { | |
53 | } | |
54 | ||
55 | StoreSession::~StoreSession() | |
56 | { | |
57 | wait(); | |
58 | } | |
59 | ||
60 | pair<uint64_t, uint64_t> StoreSession::progress() const | |
61 | { | |
62 | lock_guard<mutex> lock(_mutex); | |
63 | return make_pair(_units_stored, _unit_count); | |
64 | } | |
65 | ||
66 | const QString& StoreSession::error() const | |
67 | { | |
68 | lock_guard<mutex> lock(_mutex); | |
69 | return _error; | |
70 | } | |
71 | ||
72 | bool StoreSession::start() | |
73 | { | |
74 | set< shared_ptr<data::SignalData> > data_set = | |
75 | _session.get_data(); | |
76 | const vector< shared_ptr<view::Signal> > sigs = | |
77 | _session.get_signals(); | |
78 | ||
79 | // Check we have logic data | |
80 | if (data_set.empty() || sigs.empty()) { | |
81 | _error = tr("No data to save."); | |
82 | return false; | |
83 | } | |
84 | ||
85 | if (data_set.size() > 1) { | |
86 | _error = tr("PulseView currently only has support for " | |
87 | "storing a single data stream."); | |
88 | return false; | |
89 | } | |
90 | ||
91 | // Get the logic data | |
92 | //shared_ptr<data::SignalData | |
93 | shared_ptr<data::Logic> data; | |
94 | if (!(data = dynamic_pointer_cast<data::Logic>(*data_set.begin()))) { | |
95 | _error = tr("PulseView currently only has support for " | |
96 | "storing a logic data."); | |
97 | return false; | |
98 | } | |
99 | ||
100 | // Get the snapshot | |
101 | const deque< shared_ptr<data::LogicSnapshot> > &snapshots = | |
102 | data->get_snapshots(); | |
103 | ||
104 | if (snapshots.empty()) { | |
105 | _error = tr("No snapshots to save."); | |
106 | return false; | |
107 | } | |
108 | ||
109 | const shared_ptr<data::LogicSnapshot> snapshot(snapshots.front()); | |
110 | assert(snapshot); | |
111 | ||
112 | // Make a list of probes | |
113 | char **const probes = new char*[sigs.size() + 1]; | |
114 | for (size_t i = 0; i < sigs.size(); i++) { | |
115 | shared_ptr<view::Signal> sig(sigs[i]); | |
116 | assert(sig); | |
117 | probes[i] = strdup(sig->get_name().toUtf8().constData()); | |
118 | } | |
119 | probes[sigs.size()] = NULL; | |
120 | ||
121 | // Begin storing | |
122 | if (sr_session_save_init(_file_name.c_str(), | |
123 | data->samplerate(), probes) != SR_OK) { | |
124 | _error = tr("Error while saving."); | |
125 | return false; | |
126 | } | |
127 | ||
128 | // Delete the probes array | |
129 | for (size_t i = 0; i <= sigs.size(); i++) | |
130 | free(probes[i]); | |
131 | delete[] probes; | |
132 | ||
3b68d03d | 133 | _thread = std::thread(&StoreSession::store_proc, this, snapshot); |
0fbda3c2 JH |
134 | return true; |
135 | } | |
136 | ||
137 | void StoreSession::wait() | |
138 | { | |
6d483b8b MC |
139 | if (_thread.joinable()) |
140 | _thread.join(); | |
0fbda3c2 JH |
141 | } |
142 | ||
143 | void StoreSession::cancel() | |
144 | { | |
3b68d03d | 145 | _interrupt = true; |
0fbda3c2 JH |
146 | } |
147 | ||
148 | void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot) | |
149 | { | |
150 | assert(snapshot); | |
151 | ||
152 | uint64_t start_sample = 0; | |
153 | ||
154 | /// TODO: Wrap this in a std::unique_ptr when we transition to C++11 | |
155 | uint8_t *const data = new uint8_t[BlockSize]; | |
156 | assert(data); | |
157 | ||
158 | const int unit_size = snapshot->unit_size(); | |
159 | assert(unit_size != 0); | |
160 | ||
161 | { | |
162 | lock_guard<mutex> lock(_mutex); | |
163 | _unit_count = snapshot->get_sample_count(); | |
164 | } | |
165 | ||
166 | const unsigned int samples_per_block = BlockSize / unit_size; | |
167 | ||
3b68d03d | 168 | while (!_interrupt && start_sample < _unit_count) |
0fbda3c2 JH |
169 | { |
170 | progress_updated(); | |
171 | ||
172 | const uint64_t end_sample = min( | |
173 | start_sample + samples_per_block, _unit_count); | |
174 | snapshot->get_samples(data, start_sample, end_sample); | |
175 | ||
176 | if(sr_session_append(_file_name.c_str(), data, unit_size, | |
177 | end_sample - start_sample) != SR_OK) | |
178 | { | |
179 | _error = tr("Error while saving."); | |
180 | break; | |
181 | } | |
182 | ||
183 | start_sample = end_sample; | |
184 | ||
185 | { | |
186 | lock_guard<mutex> lock(_mutex); | |
187 | _units_stored = start_sample; | |
188 | } | |
189 | } | |
190 | ||
191 | progress_updated(); | |
192 | ||
193 | delete[] data; | |
194 | } | |
195 | ||
196 | } // pv |