/*** 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*/ #include <stdio.h>#include <stdlib.h>#include <string.h> #include <samplerate.h> #include "util.h" #define	BUFFER_LEN		(1 << 16)#define NUM_CHANNELS 	2#define FRAMES_PER_PASS (BUFFER_LEN >> 1) static voidclone_test (int converter){	static float input_serial [BUFFER_LEN * NUM_CHANNELS], input_interleaved [BUFFER_LEN * NUM_CHANNELS] ;	static float output [BUFFER_LEN * NUM_CHANNELS], output_cloned [BUFFER_LEN * NUM_CHANNELS] ;	double sine_freq ; 	SRC_STATE* src_state ;	SRC_STATE* src_state_cloned ;	SRC_DATA src_data, src_data_cloned ; 	int error, frame, ch, index ; 	printf ("        clone_test          (%-28s) ....... ", src_get_name (converter)) ;	fflush (stdout) ; 	memset (input_serial, 0, sizeof (input_serial)) ;	memset (input_interleaved, 0, sizeof (input_interleaved)) ;	memset (output, 0, sizeof (output)) ;	memset (output_cloned, 0, sizeof (output_cloned)) ; 	/* Fill input buffer with an n-channel interleaved sine wave */	sine_freq = 0.0111 ;	gen_windowed_sines (1, &sine_freq, 1.0, input_serial, BUFFER_LEN) ;	gen_windowed_sines (1, &sine_freq, 1.0, input_serial + BUFFER_LEN, BUFFER_LEN) ;	interleave_data (input_serial, input_interleaved, BUFFER_LEN, NUM_CHANNELS) ; 	if ((src_state = src_new (converter, NUM_CHANNELS, &error)) == NULL)	{	printf ("\n\nLine %d : src_new() failed : %s\n\n", __LINE__, src_strerror (error)) ;		exit (1) ;		} ; 	/* Perform initial pass using first half of buffer so that src_state has non-trivial state */	src_data.src_ratio = 1.1 ;	src_data.input_frames = FRAMES_PER_PASS ;	src_data.output_frames = FRAMES_PER_PASS ;	src_data.data_in = input_interleaved ;	src_data.data_out = output ;	src_data.output_frames_gen = 0 ; 	if ((error = src_process (src_state, &src_data)))	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;		printf ("  src_data.input_frames  : %ld\n", src_data.input_frames) ;		printf ("  src_data.output_frames : %ld\n\n", src_data.output_frames) ;		exit (1) ;		} ; 	/* Clone handle */	if ((src_state_cloned = src_clone (src_state, &error)) == NULL)	{	printf ("\n\nLine %d : src_clone() failed : %s\n\n", __LINE__, src_strerror (error)) ;		exit (1) ;		} ; 	/* Process second half of buffer with both handles */	src_data.data_in = input_interleaved + FRAMES_PER_PASS ; 	src_data_cloned = src_data ;	src_data_cloned.data_out = output_cloned ; 	if ((error = src_process (src_state, &src_data)))	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;		printf ("  src_data.input_frames  : %ld\n", src_data.input_frames) ;		printf ("  src_data.output_frames : %ld\n\n", src_data.output_frames) ;		exit (1) ;		} ; 	if ((error = src_process (src_state_cloned, &src_data_cloned)))	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;		printf ("  src_data.input_frames  : %ld\n", src_data.input_frames) ;		printf ("  src_data.output_frames : %ld\n\n", src_data.output_frames) ;		exit (1) ;		} ; 	/* Check that both handles generated the same number of output frames */	if (src_data.output_frames_gen != src_data_cloned.output_frames_gen)	{	printf ("\n\nLine %d : cloned output_frames_gen (%ld) != original (%ld)\n\n", __LINE__,				src_data_cloned.output_frames_gen, src_data.output_frames_gen) ;		exit (1) ;		} ; 	for (ch = 0 ; ch < NUM_CHANNELS ; ch++)	{	for (frame = 0 ; frame < src_data.output_frames_gen ; frame++)		{	index = ch * NUM_CHANNELS + ch ;			if (output [index] != output_cloned [index])			{	printf ("\n\nLine %d : cloned data does not equal original data at channel %d, frame %d\n\n",						__LINE__, ch, frame) ;				exit (1) ;				} ;			} ;		} ; 	src_state = src_delete (src_state) ;	src_state_cloned = src_delete (src_state_cloned) ; 	puts ("ok") ;} /* clone_test */ intmain (void){	puts(""); 	clone_test (SRC_ZERO_ORDER_HOLD) ;	clone_test (SRC_LINEAR) ;	clone_test (SRC_SINC_FASTEST) ; 	puts(""); 	return 0 ;} /* main */