ref: 7af9c20656f528fe2329d91197d4f83094d7715a
dir: /common/libsndfile/src/G72x/g72x_test.c/
/*
** Copyright (C) 1999-2002 Erik de Castro Lopo <[email protected]>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "g72x.h"
#include "private.h"
#ifndef M_PI
#define M_PI 3.14159265358979323846264338
#endif
#define BUFFER_SIZE (1<<14) /* Should be (1<<14) */
#define SAMPLE_RATE 11025
static void g721_test (void) ;
static void g723_test (double margin) ;
static void gen_signal_double (double *data, double scale, int datalen) ;
static int error_function (double data, double orig, double margin) ;
static int oct_save_short (short *a, short *b, int len) ;
static double orig_buffer [BUFFER_SIZE] ;
static short orig [BUFFER_SIZE] ;
static short data [BUFFER_SIZE] ;
int
main (int argc, char *argv [])
{ int bDoAll = 0 ;
int nTests = 0 ;
if (argc != 2)
{ printf ("Usage : %s <test>\n", argv [0]) ;
printf (" Where <test> is one of the following:\n") ;
printf (" g721 - test G721 encoder and decoder\n") ;
printf (" g723 - test G721 encoder and decoder\n") ;
printf (" all - perform all tests\n") ;
exit (1) ;
} ;
bDoAll=!strcmp (argv [1], "all");
if (bDoAll || ! strcmp (argv [1], "g721"))
{ g721_test () ;
nTests++ ;
} ;
if (bDoAll || ! strcmp (argv [1], "g723"))
{ g723_test (0.53) ;
nTests++ ;
} ;
if (nTests == 0)
{ printf ("Mono : ************************************\n") ;
printf ("Mono : * No '%s' test defined.\n", argv [1]) ;
printf ("Mono : ************************************\n") ;
return 1 ;
} ;
return 0 ;
} /* main */
static void
g721_test (void)
{
return ;
} /* g721_test */
static void
g723_test (double margin)
{ G72x_STATE encoder_state, decoder_state ;
long k ;
int code, position, max_err ;
private_init_state (&encoder_state) ;
encoder_state.encoder = g723_24_encoder ;
encoder_state.codec_bits = 3 ;
private_init_state (&decoder_state) ;
decoder_state.decoder = g723_24_decoder ;
decoder_state.codec_bits = 3 ;
memset (data, 0, BUFFER_SIZE * sizeof (short)) ;
memset (orig, 0, BUFFER_SIZE * sizeof (short)) ;
printf (" g723_test : ") ;
fflush (stdout) ;
gen_signal_double (orig_buffer, 32000.0, BUFFER_SIZE) ;
for (k = 0 ; k < BUFFER_SIZE ; k++)
orig [k] = (short) orig_buffer [k] ;
/* Write and read data here. */
position = 0 ;
max_err = 0 ;
for (k = 0 ; k < BUFFER_SIZE ; k++)
{ code = encoder_state.encoder (orig [k], &encoder_state) ;
data [k] = decoder_state.decoder (code, &decoder_state) ;
if (abs (orig [k] - data [k]) > max_err)
{ position = k ;
max_err = abs (orig [k] - data [k]) ;
} ;
} ;
printf ("\n\nMax error of %d at postion %d.\n", max_err, position) ;
for (k = 0 ; k < BUFFER_SIZE ; k++)
{ if (error_function (data [k], orig [k], margin))
{ printf ("Line %d: Incorrect sample A (#%ld : %d should be %d).\n", __LINE__, k, data [k], orig [k]) ;
oct_save_short (orig, data, BUFFER_SIZE) ;
exit (1) ;
} ;
} ;
printf ("ok\n") ;
return ;
} /* g723_test */
#define SIGNAL_MAXVAL 30000.0
#define DECAY_COUNT 1000
static void
gen_signal_double (double *data, double scale, int datalen)
{ int k, ramplen ;
double amp = 0.0 ;
ramplen = DECAY_COUNT ;
for (k = 0 ; k < datalen ; k++)
{ if (k <= ramplen)
amp = scale * k / ((double) ramplen) ;
else if (k > datalen - ramplen)
amp = scale * (datalen - k) / ((double) ramplen) ;
data [k] = amp * (0.4 * sin (33.3 * 2.0 * M_PI * ((double) (k+1)) / ((double) SAMPLE_RATE))
+ 0.3 * cos (201.1 * 2.0 * M_PI * ((double) (k+1)) / ((double) SAMPLE_RATE))) ;
} ;
return ;
} /* gen_signal_double */
static int
error_function (double data, double orig, double margin)
{ double error ;
if (fabs (orig) <= 500.0)
error = fabs (fabs (data) - fabs(orig)) / 2000.0 ;
else if (fabs (orig) <= 1000.0)
error = fabs (data - orig) / 3000.0 ;
else
error = fabs (data - orig) / fabs (orig) ;
if (error > margin)
{ printf ("\n\n*******************\nError : %f\n", error) ;
return 1 ;
} ;
return 0 ;
} /* error_function */
static int
oct_save_short (short *a, short *b, int len)
{ FILE *file ;
int k ;
if (! (file = fopen ("error.dat", "w")))
return 1 ;
fprintf (file, "# Not created by Octave\n") ;
fprintf (file, "# name: a\n") ;
fprintf (file, "# type: matrix\n") ;
fprintf (file, "# rows: %d\n", len) ;
fprintf (file, "# columns: 1\n") ;
for (k = 0 ; k < len ; k++)
fprintf (file, "% d\n", a [k]) ;
fprintf (file, "# name: b\n") ;
fprintf (file, "# type: matrix\n") ;
fprintf (file, "# rows: %d\n", len) ;
fprintf (file, "# columns: 1\n") ;
for (k = 0 ; k < len ; k++)
fprintf (file, "% d\n", b [k]) ;
fclose (file) ;
return 0 ;
} /* oct_save_short */