forked from Ivasoft/DSView
140 lines
3.1 KiB
C++
140 lines
3.1 KiB
C++
/*
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* This file is part of the DSView project.
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* DSView is based on PulseView.
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <cassert>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "inputfile.h"
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using std::string;
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namespace pv {
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namespace device {
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InputFile::InputFile(QString path) :
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File(path),
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_input(NULL)
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{
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_is_file = true;
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}
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sr_dev_inst* InputFile::dev_inst()
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{
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assert(_input);
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return _input->sdi;
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}
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void InputFile::use(SigSession *owner)
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{
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(void)owner;
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assert(!_input);
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// only *.dsl file is valid
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// don't allow other types of file input
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throw tr("Not a valid DSView data file.");
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return;
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}
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void InputFile::release()
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{
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if (!_owner)
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return;
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assert(_input);
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File::release();
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sr_dev_close(_input->sdi);
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sr_session_destroy();
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_input = NULL;
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}
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sr_input_format* InputFile::determine_input_file_format(const QString filename)
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{
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int i;
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/* If there are no input formats, return NULL right away. */
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sr_input_format *const *const inputs = sr_input_list();
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if (!inputs) {
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g_critical("No supported input formats available.");
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return NULL;
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}
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/* Otherwise, try to find an input module that can handle this file. */
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for (i = 0; inputs[i]; i++) {
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if (inputs[i]->format_match(filename.toUtf8().data()))
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break;
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}
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/* Return NULL if no input module wanted to touch this. */
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if (!inputs[i]) {
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g_critical("Error: no matching input module found.");
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return NULL;
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}
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return inputs[i];
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}
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sr_input* InputFile::load_input_file_format(const QString filename,
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sr_input_format *format)
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{
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struct stat st;
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sr_input *in;
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if (!format && !(format =
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determine_input_file_format(filename))) {
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/* The exact cause was already logged. */
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throw tr("Failed to load file");
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}
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if (stat(filename.toUtf8().data(), &st) == -1)
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throw tr("Failed to load file");
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/* Initialize the input module. */
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if (!(in = new sr_input)) {
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throw tr("Failed to allocate input module.");
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}
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in->format = format;
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in->param = NULL;
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if (in->format->init &&
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in->format->init(in, filename.toUtf8().data()) != SR_OK) {
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throw tr("Failed to load file");
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}
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return in;
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}
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void InputFile::start()
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{
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}
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void InputFile::run()
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{
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assert(_input);
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assert(_input->format);
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assert(_input->format->loadfile);
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_input->format->loadfile(_input, _path.toUtf8().data());
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}
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} // device
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} // pv
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