ardour/libs/pbd/pbd/downloader.h

70 lines
1.8 KiB
C++

/*
* Copyright (C) 2022 Paul Davis <paul@linuxaudiosystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libpbd_downloader_h__
#define __libpbd_downloader_h__
#include <atomic>
#include <string>
#include <curl/curl.h>
#include "pbd/libpbd_visibility.h"
namespace PBD {
class Thread;
class LIBPBD_API Downloader {
public:
Downloader (std::string const & url, std::string const & destdir);
~Downloader ();
int start ();
void cleanup ();
void cancel ();
double progress() const;
uint64_t download_size() const { return _download_size; }
uint64_t downloaded () const { return _downloaded; }
/* public so it can be called from a static C function */
size_t write (void *contents, size_t size, size_t nmemb);
int status() const { return _status; }
std::string download_path() const;
private:
std::string url;
std::string destdir;
std::string file_path;
FILE* file;
CURL* curl;
bool _cancel;
std::atomic<uint64_t> _download_size; /* read-only from requestor thread */
std::atomic<uint64_t> _downloaded; /* read-only from requestor thread */
std::atomic<int> _status;
PBD::Thread* thread;
void download ();
};
} /* namespace */
#endif