test/src/PlayTone.cpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #include "Audio/Features.hpp"
  25
  26 #ifndef HAVE_PCM_PLAYER
  27 #error PCMPlayer not available
  28 #endif
  29
  30 #include "Audio/PCMPlayer.hpp"
  31 #include "Audio/ToneSynthesiser.hpp"
  32 #include "Screen/Init.hpp"
  33 #include "OS/Args.hpp"
  34 #include "OS/Sleep.h"
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38
  39 int
  40 main(int argc, char **argv)
  41 {
  42   Args args(argc, argv, "HZ");
  43   const char *freq_s = args.ExpectNext();
  44   args.ExpectEnd();
  45
  46   unsigned freq = strtoul(freq_s, NULL, 10);
  47   if (freq == 0 || freq > 48000) {
  48     fprintf(stderr, "Invalid frequency\n");
  49     return EXIT_FAILURE;
  50   }
  51
  52   ScreenGlobalInit screen;
  53
  54   PCMPlayer player;
  55
  56   const unsigned sample_rate = 44100;
  57
  58   ToneSynthesiser tone;
  59   tone.SetTone(sample_rate, freq);
  60
  61   if (!player.Start(tone, sample_rate)) {
  62     fprintf(stderr, "Failed to start PCMPlayer\n");
  63     return EXIT_FAILURE;
  64   }
  65
  66   Sleep(1000);
  67   return EXIT_SUCCESS;
  68 }