ref: d3d8f77ddf7e099e59514a5df50466b2f1714be3
dir: /tests/callback_hang_test.c/
/* ** Copyright (c) 2002-2016, Erik de Castro Lopo <[email protected]> ** 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 */ #include "src_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