/*
    Copyright (C) 2003 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_audio_playlist_h__
#define __ardour_audio_playlist_h__

#include <vector>
#include <list>

#include "ardour/ardour.h"
#include "ardour/playlist.h"

namespace ARDOUR  {

class Session;
class AudioRegion;
class Source;
class AudioPlaylist;

class LIBARDOUR_API AudioPlaylist : public ARDOUR::Playlist
{
public:
	AudioPlaylist (Session&, const XMLNode&, bool hidden = false);
	AudioPlaylist (Session&, std::string name, bool hidden = false);
	AudioPlaylist (boost::shared_ptr<const AudioPlaylist>, std::string name, bool hidden = false);
	AudioPlaylist (boost::shared_ptr<const AudioPlaylist>, samplepos_t start, samplecnt_t cnt, std::string name, bool hidden = false);

	samplecnt_t read (Sample *dst, Sample *mixdown, float *gain_buffer, samplepos_t start, samplecnt_t cnt, uint32_t chan_n=0);

	bool destroy_region (boost::shared_ptr<Region>);

protected:

	void pre_combine (std::vector<boost::shared_ptr<Region> >&);
	void post_combine (std::vector<boost::shared_ptr<Region> >&, boost::shared_ptr<Region>);
	void pre_uncombine (std::vector<boost::shared_ptr<Region> >&, boost::shared_ptr<Region>);

private:
	int set_state (const XMLNode&, int version);
	void dump () const;
	bool region_changed (const PBD::PropertyChange&, boost::shared_ptr<Region>);
	void source_offset_changed (boost::shared_ptr<AudioRegion>);
        void load_legacy_crossfades (const XMLNode&, int version);
};

} /* namespace ARDOUR */

#endif	/* __ardour_audio_playlist_h__ */