Chris@41: /*
Chris@41: ** Copyright (c) 2002-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
Chris@41: ** All rights reserved.
Chris@41: **
Chris@41: ** This code is released under 2-clause BSD license. Please see the
Chris@41: ** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
Chris@41: */
Chris@41: 
Chris@41: #include "config.h"
Chris@41: 
Chris@41: #include <stdio.h>
Chris@41: #include <stdlib.h>
Chris@41: #include <unistd.h>
Chris@41: #include <math.h>
Chris@41: 
Chris@41: #if HAVE_ALARM && HAVE_SIGNAL && HAVE_SIGALRM
Chris@41: 
Chris@41: #include <signal.h>
Chris@41: 
Chris@41: #include <samplerate.h>
Chris@41: 
Chris@41: #include "util.h"
Chris@41: 
Chris@41: #define	SHORT_BUFFER_LEN	512
Chris@41: #define	LONG_BUFFER_LEN		(1 << 14)
Chris@41: 
Chris@41: typedef struct
Chris@41: {	double ratio ;
Chris@41: 	int count ;
Chris@41: } SRC_PAIR ;
Chris@41: 
Chris@41: static void callback_hang_test (int converter) ;
Chris@41: 
Chris@41: static void alarm_handler (int number) ;
Chris@41: static long input_callback (void *cb_data, float **data) ;
Chris@41: 
Chris@41: 
Chris@41: int
Chris@41: main (void)
Chris@41: {
Chris@41: 	/* Set up SIGALRM handler. */
Chris@41: 	signal (SIGALRM, alarm_handler) ;
Chris@41: 
Chris@41: 	puts ("") ;
Chris@41: 	callback_hang_test (SRC_ZERO_ORDER_HOLD) ;
Chris@41: 	callback_hang_test (SRC_LINEAR) ;
Chris@41: 	callback_hang_test (SRC_SINC_FASTEST) ;
Chris@41: 	puts ("") ;
Chris@41: 
Chris@41: 	return 0 ;
Chris@41: } /* main */
Chris@41: 
Chris@41: 
Chris@41: static void
Chris@41: callback_hang_test (int converter)
Chris@41: {	static float output [LONG_BUFFER_LEN] ;
Chris@41: 	static SRC_PAIR pairs [] =
Chris@41: 	{
Chris@41: 		{ 1.2, 5 }, { 1.1, 1 }, { 1.0, 1 }, { 3.0, 1 }, { 2.0, 1 }, { 0.3, 1 },
Chris@41: 		{ 1.2, 0 }, { 1.1, 10 }, { 1.0, 1 }
Chris@41: 		} ;
Chris@41: 
Chris@41: 
Chris@41: 	SRC_STATE	*src_state ;
Chris@41: 
Chris@41: 	double src_ratio = 1.0 ;
Chris@41: 	int k, error ;
Chris@41: 
Chris@41: 	printf ("\tcallback_hang_test  (%-28s) ....... ", src_get_name (converter)) ;
Chris@41: 	fflush (stdout) ;
Chris@41: 
Chris@41: 	/* Perform sample rate conversion. */
Chris@41: 	src_state = src_callback_new (input_callback, converter, 1, &error, NULL) ;
Chris@41: 	if (src_state == NULL)
Chris@41: 	{	printf ("\n\nLine %d : src_callback_new () failed : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	for (k = 0 ; k < ARRAY_LEN (pairs) ; k++)
Chris@41: 	{	alarm (1) ;
Chris@41: 		src_ratio = pairs [k].ratio ;
Chris@41: 		src_callback_read (src_state, src_ratio, pairs [k].count, output) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	src_state = src_delete (src_state) ;
Chris@41: 
Chris@41: 	alarm (0) ;
Chris@41: 	puts ("ok") ;
Chris@41: 
Chris@41: 	return ;
Chris@41: } /* callback_hang_test */
Chris@41: 
Chris@41: static void
Chris@41: alarm_handler (int number)
Chris@41: {
Chris@41: 	(void) number ;
Chris@41: 	printf ("\n\n    Error : Hang inside src_callback_read() detected. Exiting!\n\n") ;
Chris@41: 	exit (1) ;
Chris@41: } /* alarm_handler */
Chris@41: 
Chris@41: static long
Chris@41: input_callback (void *cb_data, float **data)
Chris@41: {
Chris@41: 	static float buffer [20] ;
Chris@41: 
Chris@41: 	(void) cb_data ;
Chris@41: 	*data = buffer ;
Chris@41: 
Chris@41: 	return ARRAY_LEN (buffer) ;
Chris@41: } /* input_callback */
Chris@41: 
Chris@41: #else
Chris@41: 
Chris@41: int
Chris@41: main (void)
Chris@41: {
Chris@41: 	puts ("\tCan't run this test on this platform.") ;
Chris@41: 	return 0 ;
Chris@41: } /* main */
Chris@41: 
Chris@41: #endif