/* -*- 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
*/

#include "mediaconfig.h"

AudioBackendPulse::AudioBackendPulse(const char *device)
{
  // Initialize PulseAudio
  pa_sample_spec ss;
  ss.format = PA_SAMPLE_S16NE;
  ss.channels = 1;
  ss.rate = SAMPLERATE;

  int error;

  sIn = pa_simple_new(NULL,       // Use the default server.
                      "SimpleRTP",        // Our application's name.
                      PA_STREAM_RECORD,
                      NULL,               // Use the default device.
                      "SimpleRTPin",        // Description of our stream.
                      &ss,                // Our sample format.
                      NULL,               // Use default channel map
                      NULL,               // Use default buffering attributes.
                      &error                // Ignore error code.
                      );
  printf("Pulse in: %s\n", pa_strerror(error));

  sOut = pa_simple_new(NULL,       // Use the default server.
                       "SimpleRTP",        // Our application's name.
                       PA_STREAM_PLAYBACK,
                       NULL,               // Use the default device.
                       "SimpleRTPout",        // Description of our stream.
                       &ss,                // Our sample format.
                       NULL,               // Use default channel map
                       NULL,               // Use default buffering attributes.
                       &error                // Ignore error code.
                       );
  printf("Pulse out: %s\n", pa_strerror(error));
}

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

int AudioBackendPulse::read(char *pcm, size_t maxsize)
{
  // read maximum 'maxsize' bytes into pcm and return number of bytes read.
  return pa_simple_read(sIn,
                        pcm,
                        maxsize,
                        NULL);	
}

int AudioBackendPulse::write(const char *pcm, size_t size)
{
  return pa_simple_write(sOut,
                         pcm,
                         size,
                         NULL);
}

#endif/*WITH_PULSE*/