ref: 46a0e2673f497009f0e05cdb4778a5bf7dd5a28b
dir: /tests/callback_hang_test.c/
/*
** Copyright (C) 2002-2007 Erik de Castro Lopo <erikd@mega-nerd.com>
**
** 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 <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <signal.h>
#include <samplerate.h>
#include "util.h"
#define SHORT_BUFFER_LEN 512
#define LONG_BUFFER_LEN (1 << 14)
typedef struct
{ double ratio ;
int count ;
} SRC_PAIR ;
static void callback_hang_test (int converter) ;
static void alarm_handler (int number) ;
static long input_callback (void *cb_data, float **data) ;
int
main (void)
{
#if defined (HAVE_ALARM) && defined (HAVE_SIGNAL) && HAVE_ALARM && HAVE_SIGNAL
/* Set up SIGALRM handler. */
signal (SIGALRM, alarm_handler) ;
puts ("") ;
callback_hang_test (SRC_ZERO_ORDER_HOLD) ;
callback_hang_test (SRC_LINEAR) ;
callback_hang_test (SRC_SINC_FASTEST) ;
puts ("") ;
#endif
return 0 ;
} /* main */
static void
callback_hang_test (int converter)
{ static float output [LONG_BUFFER_LEN] ;
static SRC_PAIR pairs [] =
{
{ 1.2, 5 }, { 1.1, 1 }, { 1.0, 1 }, { 3.0, 1 }, { 2.0, 1 }, { 0.3, 1 },
{ 1.2, 0 }, { 1.1, 10 }, { 1.0, 1 }
} ;
SRC_STATE *src_state ;
double src_ratio = 1.0 ;
long out_count ;
int current_out ;
int k, error ;
printf ("\tcallback_hang_test (%-28s) ....... ", src_get_name (converter)) ;
fflush (stdout) ;
current_out = 0 ;
/* Perform sample rate conversion. */
src_state = src_callback_new (input_callback, converter, 1, &error, NULL) ;
if (src_state == NULL)
{ printf ("\n\nLine %d : src_callback_new () failed : %s\n\n", __LINE__, src_strerror (error)) ;
exit (1) ;
} ;
for (k = 0 ; k < ARRAY_LEN (pairs) ; k++)
{ alarm (1) ;
src_ratio = pairs [k].ratio ;
out_count = src_callback_read (src_state, src_ratio, pairs [k].count, output) ;
} ;
src_state = src_delete (src_state) ;
alarm (0) ;
puts ("ok") ;
return ;
} /* callback_hang_test */
static void
alarm_handler (int number)
{
number = 0 ;
printf ("\n\n Error : Hang inside src_callback_read() detected. Exiting!\n\n");
exit (1) ;
} /* alarm_handler */
static long
input_callback (void *cb_data, float **data)
{
static float buffer [20] ;
cb_data = NULL ;
*data = buffer ;
return ARRAY_LEN (buffer) ;
} /* input_callback */