/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            audiooutputenginesndfile.cc
 *
 *  Tue Sep 21 09:31:30 CEST 2010
 *  Copyright 2010 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo 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.
 *
 *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "audiooutputenginesndfile.h"

#include "drumgizmo.h"

AudioOutputEngineSndFile::AudioOutputEngineSndFile(std::string file)
{
  filename = file;
}

AudioOutputEngineSndFile::~AudioOutputEngineSndFile()
{
  if(fh) sf_close(fh);
}

bool AudioOutputEngineSndFile::init(Channels *channels)
{
  this->channels = channels;

  sf_info.channels = channels->size();
  sf_info.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT;
  sf_info.samplerate = 44100;

  fh = sf_open(filename.c_str(), SFM_WRITE, &sf_info);
  if(!fh) {
    printf("Load error...\n");
    return false;
  }

  channel_t c = 0;
  Channels::iterator i = channels->begin();
  while(i != channels->end()) {
    i->num = c;
    i++;
    c++;
  }

  return true;
}

void AudioOutputEngineSndFile::run(DrumGizmo *gizmo)
{
  sample_t s[channels->size()];

  while(gizmo->isRunning()) {

    gizmo->pre(1);
    Channels::iterator i = channels->begin();
    while(i != channels->end()) {
      s[i->num] = 0.0;
      gizmo->getSamples(&(*i), &(s[i->num]), 1);
      i++;
    }

    gizmo->post(1);

    sf_writef_float(fh, s, 1); 
  }
}