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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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <cassert> | |
21 | ||
22 | #include "storesession.hpp" | |
23 | ||
24 | #include <pv/data/analog.hpp> | |
25 | #include <pv/data/analogsegment.hpp> | |
26 | #include <pv/data/logic.hpp> | |
27 | #include <pv/data/logicsegment.hpp> | |
28 | #include <pv/data/signalbase.hpp> | |
29 | #include <pv/devicemanager.hpp> | |
30 | #include <pv/devices/device.hpp> | |
31 | #include <pv/session.hpp> | |
32 | ||
33 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
34 | ||
35 | using std::deque; | |
36 | using std::ios_base; | |
37 | using std::lock_guard; | |
38 | using std::make_pair; | |
39 | using std::map; | |
40 | using std::min; | |
41 | using std::mutex; | |
42 | using std::pair; | |
43 | using std::shared_ptr; | |
44 | using std::string; | |
45 | using std::unordered_set; | |
46 | using std::vector; | |
47 | ||
48 | using Glib::VariantBase; | |
49 | ||
50 | using sigrok::ConfigKey; | |
51 | using sigrok::Error; | |
52 | using sigrok::OutputFormat; | |
53 | using sigrok::OutputFlag; | |
54 | ||
55 | namespace pv { | |
56 | ||
57 | const size_t StoreSession::BlockSize = 10 * 1024 * 1024; | |
58 | ||
59 | StoreSession::StoreSession(const string &file_name, | |
60 | const shared_ptr<OutputFormat> &output_format, | |
61 | const map<string, VariantBase> &options, | |
62 | const pair<uint64_t, uint64_t> sample_range, | |
63 | const Session &session) : | |
64 | file_name_(file_name), | |
65 | output_format_(output_format), | |
66 | options_(options), | |
67 | sample_range_(sample_range), | |
68 | session_(session), | |
69 | interrupt_(false), | |
70 | units_stored_(0), | |
71 | unit_count_(0) | |
72 | { | |
73 | } | |
74 | ||
75 | StoreSession::~StoreSession() | |
76 | { | |
77 | wait(); | |
78 | } | |
79 | ||
80 | pair<int, int> StoreSession::progress() const | |
81 | { | |
82 | return make_pair(units_stored_.load(), unit_count_.load()); | |
83 | } | |
84 | ||
85 | const QString& StoreSession::error() const | |
86 | { | |
87 | lock_guard<mutex> lock(mutex_); | |
88 | return error_; | |
89 | } | |
90 | ||
91 | bool StoreSession::start() | |
92 | { | |
93 | const unordered_set< shared_ptr<data::SignalBase> > sigs(session_.signalbases()); | |
94 | ||
95 | shared_ptr<data::Segment> any_segment; | |
96 | shared_ptr<data::LogicSegment> lsegment; | |
97 | vector< shared_ptr<data::SignalBase> > achannel_list; | |
98 | vector< shared_ptr<data::AnalogSegment> > asegment_list; | |
99 | ||
100 | for (const shared_ptr<data::SignalBase>& signal : sigs) { | |
101 | if (!signal->enabled()) | |
102 | continue; | |
103 | ||
104 | if (signal->type() == data::SignalBase::LogicChannel) { | |
105 | // All logic channels share the same data segments | |
106 | shared_ptr<data::Logic> ldata = signal->logic_data(); | |
107 | ||
108 | const deque< shared_ptr<data::LogicSegment> > &lsegments = | |
109 | ldata->logic_segments(); | |
110 | ||
111 | if (lsegments.empty()) { | |
112 | error_ = tr("Can't save logic channel without data."); | |
113 | return false; | |
114 | } | |
115 | ||
116 | lsegment = lsegments.front(); | |
117 | any_segment = lsegment; | |
118 | } | |
119 | ||
120 | if (signal->type() == data::SignalBase::AnalogChannel) { | |
121 | // Each analog channel has its own segments | |
122 | shared_ptr<data::Analog> adata = signal->analog_data(); | |
123 | ||
124 | const deque< shared_ptr<data::AnalogSegment> > &asegments = | |
125 | adata->analog_segments(); | |
126 | ||
127 | if (asegments.empty()) { | |
128 | error_ = tr("Can't save analog channel without data."); | |
129 | return false; | |
130 | } | |
131 | ||
132 | asegment_list.push_back(asegments.front()); | |
133 | any_segment = asegments.front(); | |
134 | ||
135 | achannel_list.push_back(signal); | |
136 | } | |
137 | } | |
138 | ||
139 | if (!any_segment) { | |
140 | error_ = tr("No channels enabled."); | |
141 | return false; | |
142 | } | |
143 | ||
144 | // Check whether the user wants to export a certain sample range | |
145 | uint64_t end_sample; | |
146 | ||
147 | if (sample_range_.first == sample_range_.second) { | |
148 | // No sample range specified, save everything we have | |
149 | start_sample_ = 0; | |
150 | sample_count_ = any_segment->get_sample_count(); | |
151 | } else { | |
152 | if (sample_range_.first > sample_range_.second) { | |
153 | start_sample_ = sample_range_.second; | |
154 | end_sample = min(sample_range_.first, any_segment->get_sample_count()); | |
155 | sample_count_ = end_sample - start_sample_; | |
156 | } else { | |
157 | start_sample_ = sample_range_.first; | |
158 | end_sample = min(sample_range_.second, any_segment->get_sample_count()); | |
159 | sample_count_ = end_sample - start_sample_; | |
160 | } | |
161 | } | |
162 | ||
163 | // Make sure the sample range is valid | |
164 | if (start_sample_ > any_segment->get_sample_count()) { | |
165 | error_ = tr("Can't save range without sample data."); | |
166 | return false; | |
167 | } | |
168 | ||
169 | // Begin storing | |
170 | try { | |
171 | const auto context = session_.device_manager().context(); | |
172 | auto device = session_.device()->device(); | |
173 | ||
174 | map<string, Glib::VariantBase> options = options_; | |
175 | ||
176 | if (!output_format_->test_flag(OutputFlag::INTERNAL_IO_HANDLING)) | |
177 | output_stream_.open(file_name_, ios_base::binary | | |
178 | ios_base::trunc | ios_base::out); | |
179 | ||
180 | output_ = output_format_->create_output(file_name_, device, options); | |
181 | auto meta = context->create_meta_packet( | |
182 | {{ConfigKey::SAMPLERATE, Glib::Variant<guint64>::create( | |
183 | any_segment->samplerate())}}); | |
184 | output_->receive(meta); | |
185 | } catch (Error& error) { | |
186 | error_ = tr("Error while saving: ") + error.what(); | |
187 | return false; | |
188 | } | |
189 | ||
190 | thread_ = std::thread(&StoreSession::store_proc, this, | |
191 | achannel_list, asegment_list, lsegment); | |
192 | return true; | |
193 | } | |
194 | ||
195 | void StoreSession::wait() | |
196 | { | |
197 | if (thread_.joinable()) | |
198 | thread_.join(); | |
199 | } | |
200 | ||
201 | void StoreSession::cancel() | |
202 | { | |
203 | interrupt_ = true; | |
204 | } | |
205 | ||
206 | void StoreSession::store_proc(vector< shared_ptr<data::SignalBase> > achannel_list, | |
207 | vector< shared_ptr<data::AnalogSegment> > asegment_list, | |
208 | shared_ptr<data::LogicSegment> lsegment) | |
209 | { | |
210 | unsigned progress_scale = 0; | |
211 | ||
212 | int aunit_size = 0; | |
213 | int lunit_size = 0; | |
214 | unsigned int lsamples_per_block = INT_MAX; | |
215 | unsigned int asamples_per_block = INT_MAX; | |
216 | ||
217 | if (!asegment_list.empty()) { | |
218 | // We assume all analog channels use the sample unit size | |
219 | aunit_size = asegment_list.front()->unit_size(); | |
220 | asamples_per_block = BlockSize / aunit_size; | |
221 | } | |
222 | if (lsegment) { | |
223 | lunit_size = lsegment->unit_size(); | |
224 | lsamples_per_block = BlockSize / lunit_size; | |
225 | } | |
226 | ||
227 | // Qt needs the progress values to fit inside an int. If they would | |
228 | // not, scale the current and max values down until they do. | |
229 | while ((sample_count_ >> progress_scale) > INT_MAX) | |
230 | progress_scale++; | |
231 | ||
232 | unit_count_ = sample_count_ >> progress_scale; | |
233 | ||
234 | const unsigned int samples_per_block = | |
235 | min(asamples_per_block, lsamples_per_block); | |
236 | ||
237 | while (!interrupt_ && sample_count_) { | |
238 | progress_updated(); | |
239 | ||
240 | const uint64_t packet_len = | |
241 | min((uint64_t)samples_per_block, sample_count_); | |
242 | ||
243 | try { | |
244 | const auto context = session_.device_manager().context(); | |
245 | ||
246 | for (unsigned int i = 0; i < achannel_list.size(); i++) { | |
247 | shared_ptr<sigrok::Channel> achannel = (achannel_list.at(i))->channel(); | |
248 | shared_ptr<data::AnalogSegment> asegment = asegment_list.at(i); | |
249 | ||
250 | float *adata = new float[packet_len]; | |
251 | asegment->get_samples(start_sample_, start_sample_ + packet_len, adata); | |
252 | ||
253 | auto analog = context->create_analog_packet( | |
254 | vector<shared_ptr<sigrok::Channel> >{achannel}, | |
255 | (float *)adata, packet_len, | |
256 | sigrok::Quantity::VOLTAGE, sigrok::Unit::VOLT, | |
257 | vector<const sigrok::QuantityFlag *>()); | |
258 | const string adata_str = output_->receive(analog); | |
259 | ||
260 | if (output_stream_.is_open()) | |
261 | output_stream_ << adata_str; | |
262 | ||
263 | delete[] adata; | |
264 | } | |
265 | ||
266 | if (lsegment) { | |
267 | const size_t data_size = packet_len * lunit_size; | |
268 | uint8_t* ldata = new uint8_t[data_size]; | |
269 | lsegment->get_samples(start_sample_, start_sample_ + packet_len, ldata); | |
270 | ||
271 | auto logic = context->create_logic_packet((void*)ldata, data_size, lunit_size); | |
272 | const string ldata_str = output_->receive(logic); | |
273 | ||
274 | if (output_stream_.is_open()) | |
275 | output_stream_ << ldata_str; | |
276 | ||
277 | delete[] ldata; | |
278 | } | |
279 | } catch (Error& error) { | |
280 | error_ = tr("Error while saving: ") + error.what(); | |
281 | break; | |
282 | } | |
283 | ||
284 | sample_count_ -= packet_len; | |
285 | start_sample_ += packet_len; | |
286 | units_stored_ = unit_count_ - (sample_count_ >> progress_scale); | |
287 | } | |
288 | ||
289 | // Zeroing the progress variables indicates completion | |
290 | units_stored_ = unit_count_ = 0; | |
291 | ||
292 | store_successful(); | |
293 | progress_updated(); | |
294 | ||
295 | output_.reset(); | |
296 | output_stream_.close(); | |
297 | } | |
298 | ||
299 | } // namespace pv |