coreaudiosource.h

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/*
    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"
#include <string>

using namespace std;

namespace ARDOUR {

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

        void set_path (const std::string& p);

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

        int flush_header () {return 0;};
        void set_header_timeline_position () {};
        bool clamped_at_unity () const { return false; }

        void flush () {}

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

  protected:
        void close ();
        framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const;
        framecnt_t write_unlocked (Sample *, framecnt_t) { return 0; }

  private:
        mutable CAAudioFile af;
        uint16_t n_channels;

        void init_cafile ();
        int safe_read (Sample*, framepos_t start, framecnt_t cnt, AudioBufferList&) const;
};

}; /* namespace ARDOUR */

#endif /* __coreaudio_source_h__ */