comparison src/libsamplerate-0.1.9/tests/callback_hang_test.c @ 41:481f5f8c5634

Current libsamplerate source

+/*
+** Copyright (c) 2002-2016, Erik de Castro Lopo <[e-mail]>
+** All rights reserved.
+**
+** This code is released under 2-clause BSD license. Please see the
+** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
+*/
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#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) ;
+	callback_hang_test (SRC_SINC_FASTEST) ;
+	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