mirror of git://sigrok.org/pulseview
300 lines
8.0 KiB
C++
300 lines
8.0 KiB
C++
/*
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* This file is part of the PulseView project.
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*
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* Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cassert>
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#include "storesession.hpp"
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#include <pv/data/analog.hpp>
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#include <pv/data/analogsegment.hpp>
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#include <pv/data/logic.hpp>
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#include <pv/data/logicsegment.hpp>
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#include <pv/data/signalbase.hpp>
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#include <pv/devicemanager.hpp>
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#include <pv/devices/device.hpp>
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#include <pv/session.hpp>
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#include <libsigrokcxx/libsigrokcxx.hpp>
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using std::deque;
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using std::ios_base;
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using std::lock_guard;
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using std::make_pair;
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using std::map;
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using std::min;
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using std::mutex;
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using std::pair;
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using std::shared_ptr;
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using std::string;
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using std::unordered_set;
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using std::vector;
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using Glib::VariantBase;
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using sigrok::ConfigKey;
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using sigrok::Error;
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using sigrok::OutputFormat;
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using sigrok::OutputFlag;
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namespace pv {
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const size_t StoreSession::BlockSize = 10 * 1024 * 1024;
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StoreSession::StoreSession(const string &file_name,
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const shared_ptr<OutputFormat> &output_format,
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const map<string, VariantBase> &options,
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const pair<uint64_t, uint64_t> sample_range,
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const Session &session) :
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file_name_(file_name),
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output_format_(output_format),
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options_(options),
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sample_range_(sample_range),
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session_(session),
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interrupt_(false),
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units_stored_(0),
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unit_count_(0)
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{
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}
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StoreSession::~StoreSession()
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{
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wait();
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}
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pair<int, int> StoreSession::progress() const
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{
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return make_pair(units_stored_.load(), unit_count_.load());
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}
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const QString& StoreSession::error() const
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{
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lock_guard<mutex> lock(mutex_);
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return error_;
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}
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bool StoreSession::start()
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{
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const unordered_set< shared_ptr<data::SignalBase> > sigs(session_.signalbases());
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shared_ptr<data::Segment> any_segment;
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shared_ptr<data::LogicSegment> lsegment;
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vector< shared_ptr<data::SignalBase> > achannel_list;
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vector< shared_ptr<data::AnalogSegment> > asegment_list;
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for (shared_ptr<data::SignalBase> signal : sigs) {
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if (!signal->enabled())
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continue;
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if (signal->type() == data::SignalBase::LogicChannel) {
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// All logic channels share the same data segments
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shared_ptr<data::Logic> ldata = signal->logic_data();
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const deque< shared_ptr<data::LogicSegment> > &lsegments =
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ldata->logic_segments();
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if (lsegments.empty()) {
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error_ = tr("Can't save logic channel without data.");
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return false;
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}
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lsegment = lsegments.front();
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any_segment = lsegment;
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}
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if (signal->type() == data::SignalBase::AnalogChannel) {
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// Each analog channel has its own segments
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shared_ptr<data::Analog> adata = signal->analog_data();
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const deque< shared_ptr<data::AnalogSegment> > &asegments =
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adata->analog_segments();
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if (asegments.empty()) {
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error_ = tr("Can't save analog channel without data.");
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return false;
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}
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asegment_list.push_back(asegments.front());
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any_segment = asegments.front();
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achannel_list.push_back(signal);
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}
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}
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if (!any_segment) {
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error_ = tr("No channels enabled.");
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return false;
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}
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// Check whether the user wants to export a certain sample range
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uint64_t end_sample;
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if (sample_range_.first == sample_range_.second) {
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// No sample range specified, save everything we have
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start_sample_ = 0;
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sample_count_ = any_segment->get_sample_count();
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} else {
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if (sample_range_.first > sample_range_.second) {
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start_sample_ = sample_range_.second;
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end_sample = min(sample_range_.first, any_segment->get_sample_count());
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sample_count_ = end_sample - start_sample_;
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} else {
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start_sample_ = sample_range_.first;
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end_sample = min(sample_range_.second, any_segment->get_sample_count());
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sample_count_ = end_sample - start_sample_;
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}
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}
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// Make sure the sample range is valid
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if (start_sample_ > any_segment->get_sample_count()) {
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error_ = tr("Can't save range without sample data.");
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return false;
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}
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// Begin storing
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try {
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const auto context = session_.device_manager().context();
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auto device = session_.device()->device();
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map<string, Glib::VariantBase> options = options_;
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if (!output_format_->test_flag(OutputFlag::INTERNAL_IO_HANDLING))
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output_stream_.open(file_name_, ios_base::binary |
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ios_base::trunc | ios_base::out);
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output_ = output_format_->create_output(file_name_, device, options);
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auto meta = context->create_meta_packet(
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{{ConfigKey::SAMPLERATE, Glib::Variant<guint64>::create(
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any_segment->samplerate())}});
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output_->receive(meta);
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} catch (Error error) {
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error_ = tr("Error while saving: ") + error.what();
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return false;
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}
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thread_ = std::thread(&StoreSession::store_proc, this,
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achannel_list, asegment_list, lsegment);
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return true;
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}
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void StoreSession::wait()
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{
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if (thread_.joinable())
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thread_.join();
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}
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void StoreSession::cancel()
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{
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interrupt_ = true;
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}
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void StoreSession::store_proc(vector< shared_ptr<data::SignalBase> > achannel_list,
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vector< shared_ptr<data::AnalogSegment> > asegment_list,
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shared_ptr<data::LogicSegment> lsegment)
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{
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unsigned progress_scale = 0;
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int aunit_size = 0;
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int lunit_size = 0;
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unsigned int lsamples_per_block = INT_MAX;
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unsigned int asamples_per_block = INT_MAX;
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if (!asegment_list.empty()) {
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// We assume all analog channels use the sample unit size
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aunit_size = asegment_list.front()->unit_size();
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asamples_per_block = BlockSize / aunit_size;
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}
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if (lsegment) {
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lunit_size = lsegment->unit_size();
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lsamples_per_block = BlockSize / lunit_size;
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}
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// Qt needs the progress values to fit inside an int. If they would
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// not, scale the current and max values down until they do.
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while ((sample_count_ >> progress_scale) > INT_MAX)
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progress_scale++;
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unit_count_ = sample_count_ >> progress_scale;
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const unsigned int samples_per_block =
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min(asamples_per_block, lsamples_per_block);
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while (!interrupt_ && sample_count_) {
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progress_updated();
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const uint64_t packet_len =
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min((uint64_t)samples_per_block, sample_count_);
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try {
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const auto context = session_.device_manager().context();
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for (unsigned int i = 0; i < achannel_list.size(); i++) {
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shared_ptr<sigrok::Channel> achannel = (achannel_list.at(i))->channel();
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shared_ptr<data::AnalogSegment> asegment = asegment_list.at(i);
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float *adata = new float[packet_len];
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asegment->get_samples(start_sample_, start_sample_ + packet_len, adata);
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auto analog = context->create_analog_packet(
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vector<shared_ptr<sigrok::Channel> >{achannel},
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(float *)adata, packet_len,
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sigrok::Quantity::VOLTAGE, sigrok::Unit::VOLT,
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vector<const sigrok::QuantityFlag *>());
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const string adata_str = output_->receive(analog);
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if (output_stream_.is_open())
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output_stream_ << adata_str;
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delete[] adata;
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}
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if (lsegment) {
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const size_t data_size = packet_len * lunit_size;
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uint8_t* ldata = new uint8_t[data_size];
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lsegment->get_samples(start_sample_, start_sample_ + packet_len, ldata);
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auto logic = context->create_logic_packet((void*)ldata, data_size, lunit_size);
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const string ldata_str = output_->receive(logic);
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if (output_stream_.is_open())
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output_stream_ << ldata_str;
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delete[] ldata;
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}
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} catch (Error error) {
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error_ = tr("Error while saving: ") + error.what();
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break;
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}
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sample_count_ -= packet_len;
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start_sample_ += packet_len;
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units_stored_ = unit_count_ - (sample_count_ >> progress_scale);
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}
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// Zeroing the progress variables indicates completion
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units_stored_ = unit_count_ = 0;
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store_successful();
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progress_updated();
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output_.reset();
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output_stream_.close();
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}
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} // namespace pv
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