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coreaudiosource.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.

*/

#ifndef __coreaudio_source_h__ 
#define __coreaudio_source_h__

#include <appleutility/CAAudioFile.h>
#include <ardour/audiofilesource.h>

namespace ARDOUR {

class CoreAudioSource : public AudioFileSource {
  public:
      CoreAudioSource (ARDOUR::Session&, const XMLNode&);
      CoreAudioSource (ARDOUR::Session&, const string& path, int chn, Flag);
      ~CoreAudioSource ();

      float sample_rate() const;
      int update_header (nframes_t when, struct tm&, time_t);

      int flush_header () {return 0;};
      void set_header_timeline_position () {};

      static int get_soundfile_info (string path, SoundFileInfo& _info, string& error_msg);

  protected:
      nframes_t read_unlocked (Sample *dst, nframes_t start, nframes_t cnt) const;
      nframes_t write_unlocked (Sample *dst, nframes_t cnt) { return 0; }

  private:
      mutable CAAudioFile af;
      uint16_t n_channels;

      void init ();
      int safe_read (Sample*, nframes_t start, nframes_t cnt, AudioBufferList&) const;
};

}; /* namespace ARDOUR */

#endif /* __coreaudio_source_h__ */


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