100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* swept_tone_tests.c
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2009 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*! \file */
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <memory.h>
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#include <sndfile.h>
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#include "spandsp.h"
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#include "spandsp-sim.h"
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#define OUTPUT_FILE_NAME "swept_tone.wav"
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#define BLOCK_LEN 160
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int main(int argc, char *argv[])
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{
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int i;
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int j;
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int outframes;
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int len;
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SNDFILE *outhandle;
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power_meter_t meter;
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swept_tone_state_t *s;
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int16_t buf[BLOCK_LEN];
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power_meter_init(&meter, 10);
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if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL)
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{
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fprintf(stderr, " Cannot create audio file '%s'\n", OUTPUT_FILE_NAME);
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exit(2);
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}
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printf("Test with swept tone.\n");
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s = swept_tone_init(NULL, 200.0f, 3900.0f, -10.0f, 60*SAMPLE_RATE, TRUE);
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for (j = 0; j < 60*SAMPLE_RATE; j += BLOCK_LEN)
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{
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len = swept_tone(s, buf, BLOCK_LEN);
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for (i = 0; i < len; i++)
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power_meter_update(&meter, buf[i]);
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outframes = sf_writef_short(outhandle, buf, len);
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if (outframes != len)
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{
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fprintf(stderr, " Error writing audio file\n");
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exit(2);
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}
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#if 0
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printf("Current freq %.1fHz, Level is %fdBOv/%fdBm0\n",
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swept_tone_current_frequency(s),
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power_meter_current_dbov(&meter),
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power_meter_current_dbm0(&meter));
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#else
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printf("%.1f %f\n",
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swept_tone_current_frequency(s),
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power_meter_current_dbm0(&meter));
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#endif
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}
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if (sf_close_telephony(outhandle))
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{
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fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
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exit(2);
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}
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printf("Tests passed.\n");
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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/*- End of file ------------------------------------------------------------*/
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