Do our own resampling

1 files changed, 0 insertions, 275 deletions

diff --git a/lib/libsamplerate/libsamplerate-0.2.2/tests/varispeed_test.c b/lib/libsamplerate/libsamplerate-0.2.2/tests/varispeed_test.c
deleted file mode 100755
index 3c9531c0..00000000
--- a/lib/libsamplerate/libsamplerate-0.2.2/tests/varispeed_test.c
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
-** Copyright (c) 2006-2016, 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
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-
-#include <samplerate.h>
-
-#include "util.h"
-
-#if HAVE_FFTW3
-#include <fftw3.h>
-#else
-#define fftw_cleanup()
-#endif
-
-#define	BUFFER_LEN		(1 << 14)
-
-static void varispeed_test (int converter, double target_snr) ;
-static void varispeed_bounds_test (int converter) ;
-static void set_ratio_test (int converter, int channels, double initial_ratio, double second_ratio) ;
-
-int
-main (void)
-{
-	puts ("\n    Varispeed SNR test") ;
-	printf ("        Zero Order Hold interpolator    : ") ;
-	fflush (stdout) ;
-	varispeed_test (SRC_ZERO_ORDER_HOLD, 10.0) ;
-	puts ("ok") ;
-
-	printf ("        Linear interpolator             : ") ;
-	fflush (stdout) ;
-	varispeed_test (SRC_LINEAR, 10.0) ;
-	puts ("ok") ;
-
-#ifdef ENABLE_SINC_FAST_CONVERTER
-	printf ("        Sinc interpolator               : ") ;
-	fflush (stdout) ;
-	varispeed_test (SRC_SINC_FASTEST, 115.0) ;
-	puts ("ok") ;
-#endif
-
-	puts ("\n    Varispeed bounds test") ;
-	printf ("        Zero Order Hold interpolator    : ") ;
-	fflush (stdout) ;
-	varispeed_bounds_test (SRC_ZERO_ORDER_HOLD) ;
-	puts ("ok") ;
-
-	printf ("        Linear interpolator             : ") ;
-	fflush (stdout) ;
-	varispeed_bounds_test (SRC_LINEAR) ;
-	puts ("ok") ;
-
-#ifdef ENABLE_SINC_FAST_CONVERTER
-	printf ("        Sinc interpolator               : ") ;
-	fflush (stdout) ;
-	varispeed_bounds_test (SRC_SINC_FASTEST) ;
-	puts ("ok") ;
-#endif
-
-	fftw_cleanup () ;
-	puts ("") ;
-
-	return 0 ;
-} /* main */
-
-static void
-varispeed_test (int converter, double target_snr)
-{	static float input [BUFFER_LEN], output [BUFFER_LEN] ;
-	double sine_freq, snr ;
-
-	SRC_STATE	*src_state ;
-	SRC_DATA	src_data ;
-
-	int input_len, error ;
-
-	memset (input, 0, sizeof (input)) ;
-
-	input_len = ARRAY_LEN (input) / 2 ;
-
-	sine_freq = 0.0111 ;
-	gen_windowed_sines (1, &sine_freq, 1.0, input, input_len) ;
-
-	/* Perform sample rate conversion. */
-	if ((src_state = src_new (converter, 1, &error)) == NULL)
-	{	printf ("\n\nLine %d : src_new () failed : %s\n\n", __LINE__, src_strerror (error)) ;
-		exit (1) ;
-		} ;
-
-	src_data.end_of_input = 1 ;
-
-	src_data.data_in = input ;
-	src_data.input_frames = input_len ;
-
-	src_data.src_ratio = 3.0 ;
-
-	src_data.data_out = output ;
-	src_data.output_frames = ARRAY_LEN (output) ;
-
-	if ((error = src_set_ratio (src_state, 1.0 / src_data.src_ratio)))
-	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
-		exit (1) ;
-		} ;
-
-	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 (src_data.input_frames_used != input_len)
-	{	printf ("\n\nLine %d : unused input.\n", __LINE__) ;
-		printf ("\tinput_len         : %d\n", input_len) ;
-		printf ("\tinput_frames_used : %ld\n\n", src_data.input_frames_used) ;
-		exit (1) ;
-		} ;
-
-	/* Copy the last output to the input. */
-	memcpy (input, output, sizeof (input)) ;
-	reverse_data (input, src_data.output_frames_gen) ;
-
-	if ((error = src_reset (src_state)))
-	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
-		exit (1) ;
-		} ;
-
-	src_data.end_of_input = 1 ;
-
-	src_data.data_in = input ;
-	input_len = src_data.input_frames = src_data.output_frames_gen ;
-
-	src_data.data_out = output ;
-	src_data.output_frames = ARRAY_LEN (output) ;
-
-	if ((error = src_set_ratio (src_state, 1.0 / src_data.src_ratio)))
-	{	printf ("\n\nLine %d : %s\n\n", __LINE__, src_strerror (error)) ;
-		exit (1) ;
-		} ;
-
-	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 (src_data.input_frames_used != input_len)
-	{	printf ("\n\nLine %d : unused input.\n", __LINE__) ;
-		printf ("\tinput_len         : %d\n", input_len) ;
-		printf ("\tinput_frames_used : %ld\n\n", src_data.input_frames_used) ;
-		exit (1) ;
-		} ;
-
-	src_state = src_delete (src_state) ;
-
-	snr = calculate_snr (output, src_data.output_frames_gen, 1) ;
-
-	if (target_snr > snr)
-	{	printf ("\n\nLine %d : snr (%3.1f) does not meet target (%3.1f)\n\n", __LINE__, snr, target_snr) ;
-		save_oct_float ("varispeed.mat", input, src_data.input_frames, output, src_data.output_frames_gen) ;
-		exit (1) ;
-		} ;
-
-	return ;
-} /* varispeed_test */
-
-static void
-varispeed_bounds_test (int converter)
-{	double ratios [] = { 0.1, 0.01, 20 } ;
-	int chan, r1, r2 ;
-
-	for (chan = 1 ; chan <= 9 ; chan ++)
-		for (r1 = 0 ; r1 < ARRAY_LEN (ratios) ; r1++)
-			for (r2 = 0 ; r2 < ARRAY_LEN (ratios) ; r2 ++)
-				if (r1 != r2)
-					set_ratio_test (converter, chan, ratios [r1], ratios [r2]) ;
-} /* varispeed_bounds_test */
-
-static void
-set_ratio_test (int converter, int channels, double initial_ratio, double second_ratio)
-{	const int total_input_frames = BUFFER_LEN ;
-	/* Maximum upsample ratio is 20, use a value beigger. */
-	const int total_output_frames = 25 * BUFFER_LEN ;
-
-	/* Interested in array boundary conditions, so all zero data here is fine. */
-	float *input = calloc (total_input_frames * channels, sizeof (float)) ;
-	float *output = calloc (total_output_frames * channels, sizeof (float)) ;
-
-	char details [128] ;
-
-	const int max_loop_count = 100000 ;
-	const int chunk_size = 128 ;
-
-	SRC_STATE *src_state ;
-	SRC_DATA src_data ;
-
-	int error, k, total_frames_used, total_frames_gen ;
-
-	snprintf (details, sizeof (details), "%d channels, ratio %g -> %g", channels, initial_ratio, second_ratio) ;
-
-	if ((src_state = src_new (converter, channels, &error)) == NULL)
-	{	printf ("\n\nLine %d : src_new () failed : %s\n\n", __LINE__, src_strerror (error)) ;
-		exit (1) ;
-		} ;
-
-	total_frames_used = 0 ;
-	total_frames_gen = 0 ;
-
-	memset (&src_data, 0, sizeof (src_data)) ;
-	src_data.end_of_input = 0 ;
-	src_data.src_ratio = initial_ratio ;
-	src_data.data_in = input ;
-	src_data.data_out = output ;
-	src_data.input_frames = chunk_size ;
-	src_data.output_frames = total_output_frames ;
-
-	/* Use a max_loop_count here to enable the detection of infinite loops
-	** (due to end of input not being detected.
-	*/
-	for (k = 0 ; k < max_loop_count ; k ++)
-	{	if (k == 1)
-		{	/* Hard switch to second_ratio after processing one chunk. */
-			src_data.src_ratio = second_ratio ;
-			if ((error = src_set_ratio (src_state, second_ratio)))
-			{	printf ("\n\nLine %d : %s : %s\n\n", __LINE__, details, src_strerror (error)) ;
-				exit (1) ;
-				} ;
-			} ;
-
-		if ((error = src_process (src_state, &src_data)) != 0)
-		{	printf ("\n\nLine %d : %s : %s\n\n", __LINE__, details, src_strerror (error)) ;
-			exit (1) ;
-			} ;
-
-		if (src_data.end_of_input && src_data.output_frames_gen == 0)
-			break ;
-
-		total_frames_used	+= src_data.input_frames_used ;
-		total_frames_gen 	+= src_data.output_frames_gen ;
-
-		src_data.data_in	+= src_data.input_frames_used * channels ;
-		src_data.data_out	+= src_data.output_frames_gen * channels ;
-
-		src_data.input_frames	= total_input_frames - total_frames_used ;
-		src_data.output_frames	= total_output_frames - total_frames_gen ;
-
-		src_data.end_of_input = total_frames_used >= total_input_frames ? 1 : 0 ;
-		} ;
-
-	ASSERT (k < max_loop_count) ;
-	ASSERT (total_frames_gen > 0) ;
-
-	for (k = 0 ; k < total_frames_gen * channels ; k ++)
-		ASSERT (! isnan (output [k])) ;
-
-	src_state = src_delete (src_state) ;
-
-	free (input) ;
-	free (output) ;
-
-	return ;
-} /* set_ratio_test */