/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            audiobackend-pulse.cc
 *
 *  Wed Sep 24 07:47:47 CEST 2014
 *  Copyright 2014 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

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

#ifdef WITH_PULSE

#include <pulse/simple.h>
#include <pulse/error.h>

/*
Input example:
http://freedesktop.org/software/pulseaudio/doxygen/pacat-simple_8c-example.html

Output example:
http://freedesktop.org/software/pulseaudio/doxygen/parec-simple_8c-example.html
*/

AudioBackendPulse::AudioBackendPulse(const char *device)
{
  // Initialize PulseAudio
  static const pa_sample_spec ss = {
    .format = PA_SAMPLE_S16LE,
    .rate = SAMPLERATE,
    .channels = 1
  };

  int error;

  if (!(sIn = pa_simple_new(NULL, "Anything", PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
    fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  }
  if (!(sOut = pa_simple_new(NULL, "Anything", PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, NULL, &error))) {
    fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
  }
}

AudioBackendPulse::~AudioBackendPulse()
{
  // Freeeeedoooooom! Set the PulseAudio instances free again, we're done
  pa_simple_free(sIn);
  pa_simple_free(sOut);
}

int AudioBackendPulse::read(char *pcm, size_t maxsize)
{
  int error;

  if (pa_simple_read(sIn, pcm, maxsize, &error) < 0) {
    fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n",
            pa_strerror(error));
  }
  return maxsize;
}

int AudioBackendPulse::write(const char *pcm, size_t size)
{
  int error;

  if (pa_simple_write(sOut, pcm, size, &error) < 0) {
    fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n",
            pa_strerror(error));
  }
  /*
  if(pa_simple_drain(sOut, &error) < 0) {
    fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n",
            pa_strerror(error));
  }
  */

  return 0;
}

#endif/*WITH_PULSE*/