Mercurial > hg > audiostuff
diff spandsp-0.0.6pre17/tests/tone_generate_tests.c @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 15:50:58 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/spandsp-0.0.6pre17/tests/tone_generate_tests.c Fri Jun 25 15:50:58 2010 +0200 @@ -0,0 +1,253 @@ +/* + * SpanDSP - a series of DSP components for telephony + * + * tone_generate_tests.c + * + * Written by Steve Underwood <steveu@coppice.org> + * + * Copyright (C) 2001 Steve Underwood + * + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * $Id: tone_generate_tests.c,v 1.22 2009/05/30 15:23:14 steveu Exp $ + */ + +/*! \page tone_generate_tests_page Tone generation tests +\section tone_generate_tests_page_sec_1 What does it do? +*/ + +#if defined(HAVE_CONFIG_H) +#include "config.h" +#endif + +#include <stdlib.h> +#include <stdio.h> +#include <fcntl.h> +#include <string.h> +#include <time.h> +#include <sndfile.h> + +//#if defined(WITH_SPANDSP_INTERNALS) +#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES +//#endif + +#include "spandsp.h" +#include "spandsp-sim.h" + +#define OUTPUT_FILE_NAME "tone_generate.wav" + +int main(int argc, char *argv[]) +{ + tone_gen_descriptor_t tone_desc; + tone_gen_state_t tone_state; + int i; + int16_t amp[16384]; + int len; + SNDFILE *outhandle; + int outframes; + + if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL) + { + fprintf(stderr, " Cannot open audio file '%s'\n", OUTPUT_FILE_NAME); + exit(2); + } + + /* Try a tone pair */ + make_tone_gen_descriptor(&tone_desc, + 440, + -10, + 620, + -15, + 100, + 200, + 300, + 400, + FALSE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try a different tone pair */ + make_tone_gen_descriptor(&tone_desc, + 350, + -10, + 440, + -15, + 400, + 300, + 200, + 100, + TRUE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try a different tone pair */ + make_tone_gen_descriptor(&tone_desc, + 400, + -10, + 450, + -10, + 100, + 200, + 300, + 400, + TRUE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try a single tone */ + make_tone_gen_descriptor(&tone_desc, + 400, + -10, + 0, + 0, + 100, + 200, + 300, + 400, + TRUE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try a single non-repeating tone */ + make_tone_gen_descriptor(&tone_desc, + 820, + -10, + 0, + 0, + 2000, + 0, + 0, + 0, + FALSE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try a single non-repeating tone at 0dBm0 */ + make_tone_gen_descriptor(&tone_desc, + 820, + 0, + 0, + 0, + 2000, + 0, + 0, + 0, + FALSE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try an AM modulated tone at a modest modulation level (25%) */ + make_tone_gen_descriptor(&tone_desc, + 425, + -10, + -50, + 25, + 100, + 200, + 300, + 400, + TRUE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + /* Try an AM modulated tone at maximum modulation level (100%) */ + make_tone_gen_descriptor(&tone_desc, + 425, + -10, + -50, + 100, + 100, + 200, + 300, + 400, + TRUE); + tone_gen_init(&tone_state, &tone_desc); + + for (i = 0; i < 1000; i++) + { + len = tone_gen(&tone_state, amp, 160); + printf("Generated %d samples\n", len); + if (len <= 0) + break; + outframes = sf_writef_short(outhandle, amp, len); + } + + if (sf_close(outhandle) != 0) + { + fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME); + exit (2); + } + + return 0; +} +/*- End of function --------------------------------------------------------*/ +/*- End of file ------------------------------------------------------------*/