X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fdevices%2Finputfile.cpp;h=46886ed516399eaebb7b624edf951a70775b7b01;hp=1bf34bad22a33bc0307199657bfe5ecf8dc9ef3d;hb=16a832bc5bb4cce24598537c99e0655edb65c1d0;hpb=3b0acbcbcd902ac61a3841e7c558cbc5f8448b7f

diff --git a/pv/devices/inputfile.cpp b/pv/devices/inputfile.cpp
index 1bf34bad..46886ed5 100644
--- a/pv/devices/inputfile.cpp
+++ b/pv/devices/inputfile.cpp
@@ -21,11 +21,18 @@
 #include <fstream>
 #include <vector>
 
+#include <QDebug>
 #include <QString>
 
+#include <pv/globalsettings.hpp>
+
 #include "inputfile.hpp"
 
+using sigrok::InputFormat;
+
 using std::map;
+using std::out_of_range;
+using std::pair;
 using std::shared_ptr;
 using std::streamsize;
 using std::string;
@@ -36,7 +43,10 @@ using std::vector;
 namespace pv {
 namespace devices {
 
-const streamsize InputFile::BufferSize = 16384;
+// Use a 4MB chunk size for reading a file into memory. Larger values don't
+// seem to provide any substancial performance improvements, but can cause
+// UI lag and a visually "stuttering" display of the data currently loading.
+const streamsize InputFile::BufferSize = (4 * 1024 * 1024);
 
 InputFile::InputFile(const shared_ptr<sigrok::Context> &context,
 	const string &file_name,
@@ -50,6 +60,56 @@ InputFile::InputFile(const shared_ptr<sigrok::Context> &context,
 {
 }
 
+InputFile::InputFile(const shared_ptr<sigrok::Context> &context,
+	QSettings &settings):
+	File(""),
+	context_(context),
+	interrupt_(false)
+{
+	file_name_ = settings.value("filename").toString().toStdString();
+
+	QString format_name = settings.value("format").toString();
+
+	// Find matching format
+	const map<string, shared_ptr<InputFormat> > formats = context->input_formats();
+
+	try {
+		format_ = formats.at(format_name.toStdString());
+
+		// Restore all saved options
+		int options = settings.value("options").toInt();
+
+		for (int i = 0; i < options; i++) {
+			settings.beginGroup("option" + QString::number(i));
+			QString name = settings.value("name").toString();
+			options_[name.toStdString()] = GlobalSettings::restore_variantbase(settings);
+			settings.endGroup();
+		}
+
+	} catch (out_of_range&) {
+		qWarning() << "Could not find input format" << format_name <<
+			"needed to restore session input file";
+	}
+}
+
+void InputFile::save_meta_to_settings(QSettings &settings)
+{
+	settings.setValue("filename", QString::fromStdString(file_name_));
+
+	settings.setValue("format", QString::fromStdString(format_->name()));
+
+	settings.setValue("options", (int)options_.size());
+
+	int i = 0;
+	for (pair<string, Glib::VariantBase> option : options_) {
+		settings.beginGroup("option" + QString::number(i));
+		settings.setValue("name", QString::fromStdString(option.first));
+		GlobalSettings::store_variantbase(settings, option.second);
+		settings.endGroup();
+		i++;
+	}
+}
+
 void InputFile::open()
 {
 	if (session_)
@@ -57,6 +117,9 @@ void InputFile::open()
 	else
 		session_ = context_->create_session();
 
+	if (!format_)
+		return;
+
 	input_ = format_->create_input(options_);
 
 	if (!input_)
@@ -96,6 +159,9 @@ void InputFile::start()
 
 void InputFile::run()
 {
+	if (!input_)
+		return;
+
 	if (!f) {
 		// Previous call to run() processed the entire file already
 		f = new ifstream(file_name_, ios::binary);