* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <cassert>
#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;
+using std::ifstream;
+using std::ios;
+using std::vector;
+
namespace pv {
namespace devices {
-const std::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,
+ shared_ptr<sigrok::InputFormat> format,
+ const map<string, Glib::VariantBase> &options) :
+ File(file_name),
+ context_(context),
+ format_(format),
+ options_(options),
+ interrupt_(false)
+{
+}
-InputFile::InputFile(const std::shared_ptr<sigrok::Context> &context,
- const std::string &file_name,
- std::shared_ptr<sigrok::InputFormat> format,
- const std::map<std::string, Glib::VariantBase> &options) :
+InputFile::InputFile(const shared_ptr<sigrok::Context> &context,
+ QSettings &settings):
+ File(""),
context_(context),
- input_(format->create_input(options)),
- file_name_(file_name),
- interrupt_(false) {
+ 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_)
+ close();
+ else
+ session_ = context_->create_session();
+
+ if (!format_)
+ return;
+
+ input_ = format_->create_input(options_);
+
if (!input_)
throw QString("Failed to create input");
+
+ // open() should add the input device to the session but
+ // we can't open the device without sending some data first
+ f = new ifstream(file_name_, ios::binary);
+
+ vector<char> buffer(BufferSize);
+
+ f->read(buffer.data(), BufferSize);
+ const streamsize size = f->gcount();
+ if (size == 0)
+ return;
+
+ input_->send(buffer.data(), size);
+
+ try {
+ device_ = input_->device();
+ } catch (sigrok::Error&) {
+ return;
+ }
+
+ session_->add_device(device_);
}
-void InputFile::create() {
- session_ = context_->create_session();
+void InputFile::close()
+{
+ if (session_)
+ session_->remove_devices();
}
-void InputFile::start() {
+void InputFile::start()
+{
}
-void InputFile::run() {
- char buffer[BufferSize];
- bool need_device = true;
+void InputFile::run()
+{
+ if (!input_)
+ return;
+
+ if (!f) {
+ // Previous call to run() processed the entire file already
+ f = new ifstream(file_name_, ios::binary);
+ input_->reset();
+ }
- assert(session_);
- assert(input_);
+ vector<char> buffer(BufferSize);
interrupt_ = false;
- std::ifstream f(file_name_);
- while (!interrupt_ && f) {
- f.read(buffer, BufferSize);
- const std::streamsize size = f.gcount();
+ while (!interrupt_ && !f->eof()) {
+ f->read(buffer.data(), BufferSize);
+ const streamsize size = f->gcount();
if (size == 0)
break;
- input_->send(buffer, size);
-
- if (need_device) {
- try {
- device_ = input_->device();
- } catch (sigrok::Error) {
- break;
- }
-
- session_->add_device(device_);
- need_device = false;
- }
+ input_->send(buffer.data(), size);
if (size != BufferSize)
break;
}
input_->end();
+
+ delete f;
+ f = nullptr;
}
-void InputFile::stop() {
+void InputFile::stop()
+{
interrupt_ = true;
}
projects / pulseview.git / blobdiff