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view spandsp-0.0.3/spandsp-0.0.3/tests/r2_mf_tx_tests.c @ 5:f762bf195c4b
import spandsp-0.0.3
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 16:00:21 +0200 |
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/* * SpanDSP - a series of DSP components for telephony * * r2_mf_tx_tests.c - Test the Bell MF generator. * * Written by Steve Underwood <steveu@coppice.org> * * Copyright (C) 2003 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: r2_mf_tx_tests.c,v 1.4 2006/11/19 14:07:27 steveu Exp $ */ /*! \file */ /*! \page r2_mf_tx_tests_page R2 MF generation tests \section r2_mf_tx_tests_page_sec_1 What does it do? ???. \section r2_mf_tx_tests_page_sec_2 How does it work? ???. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <stdlib.h> #include <inttypes.h> #include <string.h> #include <stdio.h> #if defined(HAVE_TGMATH_H) #include <tgmath.h> #endif #if defined(HAVE_MATH_H) #include <math.h> #endif #include <time.h> #include <fcntl.h> #include <audiofile.h> #include <tiffio.h> #include "spandsp.h" #define OUTPUT_FILE_NAME "r2_mf.wav" int main(int argc, char *argv[]) { r2_mf_tx_state_t gen; int16_t amp[1000]; int len; AFfilehandle outhandle; AFfilesetup filesetup; int outframes; int fwd; int digit; const char *digits = "0123456789BCDEF"; filesetup = afNewFileSetup(); if (filesetup == AF_NULL_FILESETUP) { fprintf(stderr, " Failed to create file setup\n"); exit(2); } afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16); afInitRate(filesetup, AF_DEFAULT_TRACK, 8000.0); //afInitCompression(filesetup, AF_DEFAULT_TRACK, AF_COMPRESSION_G711_ALAW); afInitFileFormat(filesetup, AF_FILE_WAVE); afInitChannels(filesetup, AF_DEFAULT_TRACK, 1); outhandle = afOpenFile(OUTPUT_FILE_NAME, "w", filesetup); if (outhandle == AF_NULL_FILEHANDLE) { fprintf(stderr, " Cannot open wave file '%s'\n", OUTPUT_FILE_NAME); exit(2); } r2_mf_tx_init(&gen); fwd = FALSE; for (digit = 0; digits[digit]; digit++) { len = r2_mf_tx(&gen, amp, 1000, fwd, digits[digit]); printf("Generated %d samples of %c\n", len, digits[digit]); if (len > 0) { outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, amp, len); } len = r2_mf_tx(&gen, amp, 1000, fwd, 0); printf("Generated %d samples\n", len); if (len > 0) { outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, amp, len); } } fwd = TRUE; for (digit = 0; digits[digit]; digit++) { len = r2_mf_tx(&gen, amp, 1000, fwd, digits[digit]); printf("Generated %d samples of %c\n", len, digits[digit]); if (len > 0) { outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, amp, len); } len = r2_mf_tx(&gen, amp, 1000, fwd, 0); printf("Generated %d samples\n", len); if (len > 0) { outframes = afWriteFrames(outhandle, AF_DEFAULT_TRACK, amp, len); } } if (afCloseFile(outhandle) != 0) { fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME); exit (2); } afFreeFileSetup(filesetup); return 0; } /*- End of function --------------------------------------------------------*/ /*- End of file ------------------------------------------------------------*/