file_source.h

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/*
 * Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2009-2011 David Robillard <d@drobilla.net>
 * Copyright (C) 2009-2015 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
 *
 * 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 __ardour_filesource_h__
#define __ardour_filesource_h__
 
#include <list>
#include <string>
#include <exception>
#include <time.h>
#include "ardour/source.h"
 
namespace ARDOUR {
 
class LIBARDOUR_API MissingSource : public std::exception
{
  public:
        MissingSource (const std::string& p, DataType t) throw ()
                : path (p), type (t) {}
        ~MissingSource() throw() {}
 
        virtual const char *what() const throw() { return "source file does not exist"; }
 
        std::string path;
        DataType type;
};
 
class LIBARDOUR_API FileSource : virtual public Source {
public:
        virtual ~FileSource ();
 
        const std::string& path() const { return _path; }
 
        virtual bool safe_file_extension (const std::string& path) const = 0;
 
        int  move_to_trash (const std::string& trash_dir_name);
        void mark_take (const std::string& id);
        void mark_immutable ();
        void mark_immutable_except_write();
        void mark_nonremovable ();
 
        bool                 within_session () const { return _within_session; }
        uint16_t             channel()         const { return _channel; }
        float                gain()            const { return _gain; }
 
        virtual void set_gain (float g, bool temporarily = false) { _gain = g; }
        virtual void set_channel (uint16_t c) { _channel = c; }
 
        int set_state (const XMLNode&, int version);
 
        int set_source_name (const std::string& newname);
 
        static bool find (Session&, DataType type, const std::string& path,
                          bool must_exist, bool& is_new, uint16_t& chan,
                          std::string& found_path);
 
        static bool find_2X (Session&, DataType type, const std::string& path,
                             bool must_exist, bool& is_new, uint16_t& chan,
                             std::string& found_path);
 
        bool removable () const;
        bool is_stub () const;
 
        const std::string& origin() const { return _origin; }
        void set_origin (std::string const& o) { _origin = o; }
 
        virtual void set_path (const std::string&);
        void replace_file (const std::string&);
 
        static PBD::Signal2<int,std::string,std::vector<std::string> > AmbiguousFileName;
 
        void existence_check ();
        virtual void prevent_deletion ();
 
        int rename (const std::string& name);
 
        virtual void close () = 0;
 
  protected:
        FileSource (Session& session, DataType type,
                    const std::string& path,
                    const std::string& origin,
                    Source::Flag flags = Source::Flag(0));
 
        FileSource (Session& session, const XMLNode& node, bool must_exist);
 
        virtual int init (const std::string& idstr, bool must_exist);
 
        virtual int move_dependents_to_trash() { return 0; }
        void set_within_session_from_path (const std::string&);
 
        std::string _path;
        bool        _file_is_new;
        uint16_t    _channel;
        bool        _within_session;
        std::string _origin;
        float       _gain;
};
 
} // namespace ARDOUR
 
#endif /* __ardour_filesource_h__ */