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silentsource.h

/*
    Copyright (C) 2000 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.

    $Id: silentsource.h,v 1.3 2004/02/22 23:04:01 taybin Exp $
*/

#ifndef __playlist_const_buffer_h__ 
#define __playlist_const_buffer_h__

#include <string>
#include <cstdlib>

#include "source.h"

namespace ARDOUR {

class SilentSource : public Source {
  public:
      SilentSource () {
            _name = "Silent Source";
      }
      
      static bool is_silent_source (const string& name) {
            return name == "Silent Source";
      }
      
      jack_nframes_t length() { return ~0U; }

      jack_nframes_t read (Source::Data *dst, jack_nframes_t start, jack_nframes_t cnt) {
            jack_nframes_t n = cnt;
            while (n--) *dst++ = 0;
            return cnt;
      }

      void peak (guint8 *max, guint8 *min, jack_nframes_t start, jack_nframes_t cnt) {
            *max = *min = 0;
      }
};

}

#endif /* __playlist_const_buffer_h__ */

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