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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 | ||
aca64cac JH |
32 | using boost::shared_lock; |
33 | using boost::shared_mutex; | |
34 | ||
0fbda3c2 | 35 | using std::deque; |
f9abf97e | 36 | using std::dynamic_pointer_cast; |
3b68d03d | 37 | using std::lock_guard; |
0fbda3c2 JH |
38 | using std::make_pair; |
39 | using std::min; | |
3b68d03d | 40 | using std::mutex; |
0fbda3c2 JH |
41 | using std::pair; |
42 | using std::set; | |
f9abf97e | 43 | using std::shared_ptr; |
0fbda3c2 | 44 | using std::string; |
3b68d03d | 45 | using std::thread; |
0fbda3c2 JH |
46 | using std::vector; |
47 | ||
7223eb62 | 48 | using sigrok::ConfigKey; |
e8d00928 ML |
49 | using sigrok::Error; |
50 | ||
0fbda3c2 JH |
51 | namespace pv { |
52 | ||
53 | const size_t StoreSession::BlockSize = 1024 * 1024; | |
54 | ||
55 | StoreSession::StoreSession(const std::string &file_name, | |
56 | const SigSession &session) : | |
57 | _file_name(file_name), | |
58 | _session(session), | |
3b68d03d | 59 | _interrupt(false), |
0fbda3c2 JH |
60 | _units_stored(0), |
61 | _unit_count(0) | |
62 | { | |
63 | } | |
64 | ||
65 | StoreSession::~StoreSession() | |
66 | { | |
67 | wait(); | |
68 | } | |
69 | ||
e40b2f29 | 70 | pair<int, int> StoreSession::progress() const |
0fbda3c2 | 71 | { |
b101c41e | 72 | return make_pair(_units_stored.load(), _unit_count.load()); |
0fbda3c2 JH |
73 | } |
74 | ||
75 | const QString& StoreSession::error() const | |
76 | { | |
77 | lock_guard<mutex> lock(_mutex); | |
78 | return _error; | |
79 | } | |
80 | ||
81 | bool StoreSession::start() | |
82 | { | |
83 | set< shared_ptr<data::SignalData> > data_set = | |
84 | _session.get_data(); | |
c3a740dd | 85 | |
aca64cac | 86 | shared_lock<shared_mutex> lock(_session.signals_mutex()); |
c3a740dd | 87 | const vector< shared_ptr<view::Signal> > &sigs(_session.signals()); |
0fbda3c2 JH |
88 | |
89 | // Check we have logic data | |
90 | if (data_set.empty() || sigs.empty()) { | |
91 | _error = tr("No data to save."); | |
92 | return false; | |
93 | } | |
94 | ||
95 | if (data_set.size() > 1) { | |
96 | _error = tr("PulseView currently only has support for " | |
97 | "storing a single data stream."); | |
98 | return false; | |
99 | } | |
100 | ||
101 | // Get the logic data | |
0fbda3c2 JH |
102 | shared_ptr<data::Logic> data; |
103 | if (!(data = dynamic_pointer_cast<data::Logic>(*data_set.begin()))) { | |
104 | _error = tr("PulseView currently only has support for " | |
105 | "storing a logic data."); | |
106 | return false; | |
107 | } | |
108 | ||
109 | // Get the snapshot | |
110 | const deque< shared_ptr<data::LogicSnapshot> > &snapshots = | |
111 | data->get_snapshots(); | |
112 | ||
113 | if (snapshots.empty()) { | |
114 | _error = tr("No snapshots to save."); | |
115 | return false; | |
116 | } | |
117 | ||
118 | const shared_ptr<data::LogicSnapshot> snapshot(snapshots.front()); | |
119 | assert(snapshot); | |
120 | ||
0fbda3c2 | 121 | // Begin storing |
e8d00928 | 122 | try { |
1f4caa77 | 123 | auto context = _session.session()->context(); |
7223eb62 | 124 | auto output_format = context->output_formats()["srzip"]; |
1f4caa77 | 125 | auto device = _session.device(); |
7223eb62 ML |
126 | _output = output_format->create_output(device, |
127 | {{"filename", | |
128 | Glib::Variant<Glib::ustring>::create(_file_name)}}); | |
129 | auto meta = context->create_meta_packet( | |
130 | {{ConfigKey::SAMPLERATE, | |
131 | Glib::Variant<guint64>::create(data->samplerate())}}); | |
132 | _output->receive(meta); | |
e8d00928 | 133 | } catch (Error error) { |
0fbda3c2 JH |
134 | _error = tr("Error while saving."); |
135 | return false; | |
136 | } | |
137 | ||
3b68d03d | 138 | _thread = std::thread(&StoreSession::store_proc, this, snapshot); |
0fbda3c2 JH |
139 | return true; |
140 | } | |
141 | ||
142 | void StoreSession::wait() | |
143 | { | |
6d483b8b MC |
144 | if (_thread.joinable()) |
145 | _thread.join(); | |
0fbda3c2 JH |
146 | } |
147 | ||
148 | void StoreSession::cancel() | |
149 | { | |
3b68d03d | 150 | _interrupt = true; |
0fbda3c2 JH |
151 | } |
152 | ||
153 | void StoreSession::store_proc(shared_ptr<data::LogicSnapshot> snapshot) | |
154 | { | |
155 | assert(snapshot); | |
156 | ||
e40b2f29 MC |
157 | uint64_t start_sample = 0, sample_count; |
158 | unsigned progress_scale = 0; | |
0fbda3c2 JH |
159 | |
160 | /// TODO: Wrap this in a std::unique_ptr when we transition to C++11 | |
161 | uint8_t *const data = new uint8_t[BlockSize]; | |
162 | assert(data); | |
163 | ||
164 | const int unit_size = snapshot->unit_size(); | |
165 | assert(unit_size != 0); | |
166 | ||
e40b2f29 MC |
167 | sample_count = snapshot->get_sample_count(); |
168 | ||
169 | // Qt needs the progress values to fit inside an int. If they would | |
170 | // not, scale the current and max values down until they do. | |
171 | while ((sample_count >> progress_scale) > INT_MAX) | |
172 | progress_scale ++; | |
173 | ||
174 | _unit_count = sample_count >> progress_scale; | |
0fbda3c2 JH |
175 | |
176 | const unsigned int samples_per_block = BlockSize / unit_size; | |
177 | ||
e40b2f29 | 178 | while (!_interrupt && start_sample < sample_count) |
0fbda3c2 JH |
179 | { |
180 | progress_updated(); | |
181 | ||
182 | const uint64_t end_sample = min( | |
e40b2f29 | 183 | start_sample + samples_per_block, sample_count); |
0fbda3c2 JH |
184 | snapshot->get_samples(data, start_sample, end_sample); |
185 | ||
e8d00928 ML |
186 | size_t length = end_sample - start_sample; |
187 | ||
188 | try { | |
1f4caa77 | 189 | auto context = _session.session()->context(); |
7223eb62 ML |
190 | auto logic = context->create_logic_packet(data, length, unit_size); |
191 | _output->receive(logic); | |
e8d00928 | 192 | } catch (Error error) { |
0fbda3c2 JH |
193 | _error = tr("Error while saving."); |
194 | break; | |
195 | } | |
196 | ||
197 | start_sample = end_sample; | |
e40b2f29 | 198 | _units_stored = start_sample >> progress_scale; |
0fbda3c2 JH |
199 | } |
200 | ||
201 | progress_updated(); | |
202 | ||
7223eb62 ML |
203 | _output.reset(); |
204 | ||
0fbda3c2 JH |
205 | delete[] data; |
206 | } | |
207 | ||
208 | } // pv |