sndfileimportable.h

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/*
    Copyright (C) 2007 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_sndfile_importable_source_h__
#define __ardour_sndfile_importable_source_h__

#include <boost/shared_ptr.hpp>
#include <sndfile.h>
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/importable_source.h"

namespace ARDOUR {

class LIBARDOUR_API SndFileImportableSource : public ImportableSource {
    public:
        SndFileImportableSource (const std::string& path);
        virtual ~SndFileImportableSource();

        framecnt_t read (Sample* buffer, framecnt_t nframes);
        uint32_t   channels() const;
        framecnt_t length() const;
        framecnt_t samplerate() const;
        void       seek (framepos_t pos);
        framepos_t natural_position() const;
        bool       clamped_at_unity () const;

   protected:
        SF_INFO sf_info;
        boost::shared_ptr<SNDFILE> in;

        /* these are int64_t so as to be independent of whatever
           types Ardour may use for framepos_t, framecnt_t etc.
        */

        int64_t timecode;
        int64_t get_timecode_info (SNDFILE*, SF_BROADCAST_INFO*, bool&);
};

}

#endif /* __ardour_sndfile_importable_source_h__ */