tests/external_metro.h

   1 /*
   2  Copyright (C) 2001 Paul Davis
   3
   4  This program is free software; you can redistribute it and/or modify
   5  it under the terms of the GNU Lesser General Public License as published by
   6  the Free Software Foundation; either version 2.1 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public License
  15  along with this program; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18  $Id: external_metro.h,v 1.3.2.1 2006/06/20 14:44:00 letz Exp $
  19 */
  20
  21 #ifndef __external_metro__
  22 #define __external_metro__
  23
  24 #ifdef __cplusplus
  25 extern "C"
  26 {
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <errno.h>
  32 #include <unistd.h>
  33 #include <math.h>
  34 #include <getopt.h>
  35 #include <string.h>
  36 #include <jack/jack.h>
  37 #include <jack/transport.h>
  38
  39     typedef jack_default_audio_sample_t sample_t;
  40
  41     /*!
  42     \brief A class to test external clients
  43     */
  44
  45     struct ExternalMetro {
  46
  47         jack_client_t *client;
  48         jack_port_t *input_port;
  49         jack_port_t *output_port;
  50
  51         unsigned long sr;
  52         int freq;
  53         int bpm;
  54         jack_nframes_t tone_length, wave_length;
  55         sample_t *wave;
  56         double *amp;
  57         long offset ;
  58
  59         ExternalMetro(int freq, double max_amp, int dur_arg, int bpm, const char* client_name = "metro");
  60         virtual ~ExternalMetro();
  61
  62         static int process_audio (jack_nframes_t nframes, void* arg);
  63         static void shutdown (void* arg);
  64     };
  65
  66 #ifdef __cplusplus
  67 }
  68 #endif
  69
  70 #endif