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 <stdio.h>
Chris@41: #include <stdlib.h>
Chris@41: 
Chris@41: #include <samplerate.h>
Chris@41: 
Chris@41: #include "util.h"
Chris@41: 
Chris@41: #define	BUFFER_LEN		2048
Chris@41: #define CB_READ_LEN		256
Chris@41: 
Chris@41: static void process_reset_test (int converter) ;
Chris@41: static void callback_reset_test (int converter) ;
Chris@41: 
Chris@41: static float data_one [BUFFER_LEN] ;
Chris@41: static float data_zero [BUFFER_LEN] ;
Chris@41: 
Chris@41: int
Chris@41: main (void)
Chris@41: {
Chris@41: 	puts ("") ;
Chris@41: 
Chris@41: 	process_reset_test (SRC_ZERO_ORDER_HOLD) ;
Chris@41: 	process_reset_test (SRC_LINEAR) ;
Chris@41: 	process_reset_test (SRC_SINC_FASTEST) ;
Chris@41: 
Chris@41: 	callback_reset_test (SRC_ZERO_ORDER_HOLD) ;
Chris@41: 	callback_reset_test (SRC_LINEAR) ;
Chris@41: 	callback_reset_test (SRC_SINC_FASTEST) ;
Chris@41: 
Chris@41: 	puts ("") ;
Chris@41: 
Chris@41: 	return 0 ;
Chris@41: } /* main */
Chris@41: 
Chris@41: static void
Chris@41: process_reset_test (int converter)
Chris@41: {	static float output [BUFFER_LEN] ;
Chris@41: 
Chris@41: 	SRC_STATE *src_state ;
Chris@41: 	SRC_DATA src_data ;
Chris@41: 	int k, error ;
Chris@41: 
Chris@41: 	printf ("\tprocess_reset_test  (%-28s) ....... ", src_get_name (converter)) ;
Chris@41: 	fflush (stdout) ;
Chris@41: 
Chris@41: 	for (k = 0 ; k < BUFFER_LEN ; k++)
Chris@41: 	{	data_one [k] = 1.0 ;
Chris@41: 		data_zero [k] = 0.0 ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Get a converter. */
Chris@41: 	if ((src_state = src_new (converter, 1, &error)) == NULL)
Chris@41: 	{	printf ("\n\nLine %d : src_new() failed : %s.\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Process a bunch of 1.0 valued samples. */
Chris@41: 	src_data.data_in		= data_one ;
Chris@41: 	src_data.data_out		= output ;
Chris@41: 	src_data.input_frames	= BUFFER_LEN ;
Chris@41: 	src_data.output_frames	= BUFFER_LEN ;
Chris@41: 	src_data.src_ratio		= 0.9 ;
Chris@41: 	src_data.end_of_input	= 1 ;
Chris@41: 
Chris@41: 	if ((error = src_process (src_state, &src_data)) != 0)
Chris@41: 	{	printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Reset the state of the converter.*/
Chris@41: 	src_reset (src_state) ;
Chris@41: 
Chris@41: 	/* Now process some zero data. */
Chris@41: 	src_data.data_in		= data_zero ;
Chris@41: 	src_data.data_out		= output ;
Chris@41: 	src_data.input_frames	= BUFFER_LEN ;
Chris@41: 	src_data.output_frames	= BUFFER_LEN ;
Chris@41: 	src_data.src_ratio		= 0.9 ;
Chris@41: 	src_data.end_of_input	= 1 ;
Chris@41: 
Chris@41: 	if ((error = src_process (src_state, &src_data)) != 0)
Chris@41: 	{	printf ("\n\nLine %d : src_simple () returned error : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Finally make sure that the output data is zero ie reset was sucessful. */
Chris@41: 	for (k = 0 ; k < BUFFER_LEN / 2 ; k++)
Chris@41: 		if (output [k] != 0.0)
Chris@41: 		{	printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n", __LINE__, k, output [k]) ;
Chris@41: 			exit (1) ;
Chris@41: 			} ;
Chris@41: 
Chris@41: 	/* Make sure that this function has been exported. */
Chris@41: 	src_set_ratio (src_state, 1.0) ;
Chris@41: 
Chris@41: 	/* Delete converter. */
Chris@41: 	src_state = src_delete (src_state) ;
Chris@41: 
Chris@41: 	puts ("ok") ;
Chris@41: } /* process_reset_test */
Chris@41: 
Chris@41: /*==============================================================================
Chris@41: */
Chris@41: 
Chris@41: typedef struct
Chris@41: {	int channels ;
Chris@41: 	long count, total ;
Chris@41: 	float *data ;
Chris@41: } TEST_CB_DATA ;
Chris@41: 
Chris@41: static long
Chris@41: test_callback_func (void *cb_data, float **data)
Chris@41: {	TEST_CB_DATA *pcb_data ;
Chris@41: 
Chris@41: 	long frames ;
Chris@41: 
Chris@41: 	if ((pcb_data = cb_data) == NULL)
Chris@41: 		return 0 ;
Chris@41: 
Chris@41: 	if (data == NULL)
Chris@41: 		return 0 ;
Chris@41: 
Chris@41: 	if (pcb_data->total - pcb_data->count > 0)
Chris@41: 		frames = pcb_data->total - pcb_data->count ;
Chris@41: 	else
Chris@41: 		frames = 0 ;
Chris@41: 
Chris@41: 	*data = pcb_data->data + pcb_data->count ;
Chris@41: 	pcb_data->count += frames ;
Chris@41: 
Chris@41: 	return frames ;
Chris@41: } /* test_callback_func */
Chris@41: 
Chris@41: static void
Chris@41: callback_reset_test (int converter)
Chris@41: {	static TEST_CB_DATA test_callback_data ;
Chris@41: 
Chris@41: 	static float output [BUFFER_LEN] ;
Chris@41: 
Chris@41: 	SRC_STATE *src_state ;
Chris@41: 
Chris@41: 	double src_ratio = 1.1 ;
Chris@41: 	long read_count, read_total ;
Chris@41: 	int k, error ;
Chris@41: 
Chris@41: 	printf ("\tcallback_reset_test (%-28s) ....... ", src_get_name (converter)) ;
Chris@41: 	fflush (stdout) ;
Chris@41: 
Chris@41: 	for (k = 0 ; k < ARRAY_LEN (data_one) ; k++)
Chris@41: 	{	data_one [k] = 1.0 ;
Chris@41: 		data_zero [k] = 0.0 ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	if ((src_state = src_callback_new (test_callback_func, converter, 1, &error, &test_callback_data)) == NULL)
Chris@41: 	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Process a bunch of 1.0 valued samples. */
Chris@41: 	test_callback_data.channels = 1 ;
Chris@41: 	test_callback_data.count = 0 ;
Chris@41: 	test_callback_data.total = ARRAY_LEN (data_one) ;
Chris@41: 	test_callback_data.data = data_one ;
Chris@41: 
Chris@41: 	read_total = 0 ;
Chris@41: 	do
Chris@41: 	{	read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ;
Chris@41: 		read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ;
Chris@41: 		read_total += read_count ;
Chris@41: 		}
Chris@41: 	while (read_count > 0) ;
Chris@41: 
Chris@41: 	/* Check for errors. */
Chris@41: 	if ((error = src_error (src_state)) != 0)
Chris@41: 	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Reset the state of the converter.*/
Chris@41: 	src_reset (src_state) ;
Chris@41: 
Chris@41: 	/* Process a bunch of 0.0 valued samples. */
Chris@41: 	test_callback_data.channels = 1 ;
Chris@41: 	test_callback_data.count = 0 ;
Chris@41: 	test_callback_data.total = ARRAY_LEN (data_zero) ;
Chris@41: 	test_callback_data.data = data_zero ;
Chris@41: 
Chris@41: 	/* Now process some zero data. */
Chris@41: 	read_total = 0 ;
Chris@41: 	do
Chris@41: 	{	read_count = (ARRAY_LEN (output) - read_total > CB_READ_LEN) ? CB_READ_LEN : ARRAY_LEN (output) - read_total ;
Chris@41: 		read_count = src_callback_read (src_state, src_ratio, read_count, output + read_total) ;
Chris@41: 		read_total += read_count ;
Chris@41: 		}
Chris@41: 	while (read_count > 0) ;
Chris@41: 
Chris@41: 	/* Check for errors. */
Chris@41: 	if ((error = src_error (src_state)) != 0)
Chris@41: 	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
Chris@41: 		exit (1) ;
Chris@41: 		} ;
Chris@41: 
Chris@41: 	/* Finally make sure that the output data is zero ie reset was sucessful. */
Chris@41: 	for (k = 0 ; k < BUFFER_LEN / 2 ; k++)
Chris@41: 		if (output [k] != 0.0)
Chris@41: 		{	printf ("\n\nLine %d : output [%d] should be 0.0, is %f.\n\n", __LINE__, k, output [k]) ;
Chris@41: 			save_oct_float ("output.dat", data_one, ARRAY_LEN (data_one), output, ARRAY_LEN (output)) ;
Chris@41: 			exit (1) ;
Chris@41: 			} ;
Chris@41: 
Chris@41: 	/* Make sure that this function has been exported. */
Chris@41: 	src_set_ratio (src_state, 1.0) ;
Chris@41: 
Chris@41: 	/* Delete converter. */
Chris@41: 	src_state = src_delete (src_state) ;
Chris@41: 
Chris@41: 	puts ("ok") ;
Chris@41: } /* callback_reset_test */
Chris@41: 
Chris@41: