2 * This file is part of the PulseView project.
4 * Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
23 #include "storesession.hpp"
25 #include <pv/session.hpp>
26 #include <pv/data/logic.hpp>
27 #include <pv/data/logicsegment.hpp>
28 #include <pv/view/signal.hpp>
30 #include <libsigrokcxx/libsigrokcxx.hpp>
32 using boost::shared_lock;
33 using boost::shared_mutex;
36 using std::dynamic_pointer_cast;
37 using std::lock_guard;
43 using std::shared_ptr;
48 using sigrok::ConfigKey;
50 using sigrok::OutputFormat;
54 const size_t StoreSession::BlockSize = 1024 * 1024;
56 StoreSession::StoreSession(const std::string &file_name,
57 const shared_ptr<OutputFormat> &output_format, const Session &session) :
58 file_name_(file_name),
59 output_format_(output_format),
67 StoreSession::~StoreSession()
72 pair<int, int> StoreSession::progress() const
74 return make_pair(units_stored_.load(), unit_count_.load());
77 const QString& StoreSession::error() const
79 lock_guard<mutex> lock(mutex_);
83 bool StoreSession::start()
85 set< shared_ptr<data::SignalData> > data_set =
88 shared_lock<shared_mutex> lock(session_.signals_mutex());
89 const vector< shared_ptr<view::Signal> > &sigs(session_.signals());
91 // Check we have logic data
92 if (data_set.empty() || sigs.empty()) {
93 error_ = tr("No data to save.");
97 if (data_set.size() > 1) {
98 error_ = tr("PulseView currently only has support for "
99 "storing a single data stream.");
103 // Get the logic data
104 shared_ptr<data::Logic> data;
105 if (!(data = dynamic_pointer_cast<data::Logic>(*data_set.begin()))) {
106 error_ = tr("PulseView currently only has support for "
107 "storing a logic data.");
112 const deque< shared_ptr<data::LogicSegment> > &segments =
113 data->logic_segments();
115 if (segments.empty()) {
116 error_ = tr("No segments to save.");
120 const shared_ptr<data::LogicSegment> segment(segments.front());
125 auto context = session_.session()->context();
126 auto device = session_.device();
127 output_ = output_format_->create_output(device,
129 Glib::Variant<Glib::ustring>::create(file_name_)}});
130 auto meta = context->create_meta_packet(
131 {{ConfigKey::SAMPLERATE, Glib::Variant<guint64>::create(
132 segment->samplerate())}});
133 output_->receive(meta);
134 } catch (Error error) {
135 error_ = tr("Error while saving.");
139 thread_ = std::thread(&StoreSession::store_proc, this, segment);
143 void StoreSession::wait()
145 if (thread_.joinable())
149 void StoreSession::cancel()
154 void StoreSession::store_proc(shared_ptr<data::LogicSegment> segment)
158 uint64_t start_sample = 0, sample_count;
159 unsigned progress_scale = 0;
161 /// TODO: Wrap this in a std::unique_ptr when we transition to C++11
162 uint8_t *const data = new uint8_t[BlockSize];
165 const int unit_size = segment->unit_size();
166 assert(unit_size != 0);
168 sample_count = segment->get_sample_count();
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)
175 unit_count_ = sample_count >> progress_scale;
177 const unsigned int samples_per_block = BlockSize / unit_size;
179 while (!interrupt_ && start_sample < sample_count)
183 const uint64_t end_sample = min(
184 start_sample + samples_per_block, sample_count);
185 segment->get_samples(data, start_sample, end_sample);
187 size_t length = end_sample - start_sample;
190 auto context = session_.session()->context();
191 auto logic = context->create_logic_packet(data, length, unit_size);
192 output_->receive(logic);
193 } catch (Error error) {
194 error_ = tr("Error while saving.");
198 start_sample = end_sample;
199 units_stored_ = start_sample >> progress_scale;
202 // Zeroing the progress variables indicates completion
203 units_stored_ = unit_count_ = 0;