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/*
** Copyright (c) 2002-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
** All rights reserved.
**
** This code is released under 2-clause BSD license. Please see the
** file at : https://github.com/libsndfile/libsamplerate/blob/master/COPYING
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <math.h>
#if HAVE_ALARM && HAVE_SIGNAL && HAVE_SIGALRM
#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)
{
/* Set up SIGALRM handler. */
signal (SIGALRM, alarm_handler) ;
puts ("") ;
callback_hang_test (SRC_ZERO_ORDER_HOLD) ;
callback_hang_test (SRC_LINEAR) ;
#ifdef ENABLE_SINC_FAST_CONVERTER
callback_hang_test (SRC_SINC_FASTEST) ;
#endif
puts ("") ;
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 ;
int k, error ;
printf ("\tcallback_hang_test (%-28s) ....... ", src_get_name (converter)) ;
fflush (stdout) ;
/* 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 ;
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)
{
(void) number ;
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] ;
(void) cb_data ;
*data = buffer ;
return ARRAY_LEN (buffer) ;
} /* input_callback */
#else
int
main (void)
{
puts ("\tCan't run this test on this platform.") ;
return 0 ;
} /* main */
#endif
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