Do our own resampling

1 files changed, 0 insertions, 528 deletions

diff --git a/lib/libsamplerate/libsamplerate-0.2.2/src/samplerate.c b/lib/libsamplerate/libsamplerate-0.2.2/src/samplerate.c
deleted file mode 100755
index 700d42f7..00000000
--- a/lib/libsamplerate/libsamplerate-0.2.2/src/samplerate.c
+++ /dev/null
@@ -1,528 +0,0 @@
-/*
-** 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
-*/
-
-#ifdef HAVE_CONFIG_H
-#include	"config.h"
-#endif
-
-#include	<stdio.h>
-#include	<stdlib.h>
-#include	<string.h>
-#include	<math.h>
-
-#include	"samplerate.h"
-#include	"common.h"
-
-static SRC_STATE *psrc_set_converter (int converter_type, int channels, int *error) ;
-
-
-SRC_STATE *
-src_new (int converter_type, int channels, int *error)
-{
-	return psrc_set_converter (converter_type, channels, error) ;
-} /* src_new */
-
-SRC_STATE*
-src_clone (SRC_STATE* orig, int *error)
-{
-	if (!orig)
-	{
-		if (error)
-			*error = SRC_ERR_BAD_STATE ;
-		return NULL ;
-	}
-	if (error)
-		*error = SRC_ERR_NO_ERROR ;
-
-	SRC_STATE *state = orig->vt->copy (orig) ;
-	if (!state)
-		if (error)
-			*error = SRC_ERR_MALLOC_FAILED ;
-
-	return state ;
-}
-
-SRC_STATE*
-src_callback_new (src_callback_t func, int converter_type, int channels, int *error, void* cb_data)
-{	SRC_STATE	*state ;
-
-	if (func == NULL)
-	{	if (error)
-			*error = SRC_ERR_BAD_CALLBACK ;
-		return NULL ;
-		} ;
-
-	if (error != NULL)
-		*error = 0 ;
-
-	if ((state = src_new (converter_type, channels, error)) == NULL)
-		return NULL ;
-
-	src_reset (state) ;
-
-	state->mode = SRC_MODE_CALLBACK ;
-	state->callback_func = func ;
-	state->user_callback_data = cb_data ;
-
-	return state ;
-} /* src_callback_new */
-
-SRC_STATE *
-src_delete (SRC_STATE *state)
-{
-	if (state)
-		state->vt->close (state) ;
-
-	return NULL ;
-} /* src_state */
-
-int
-src_process (SRC_STATE *state, SRC_DATA *data)
-{
-	int error ;
-
-	if (state == NULL)
-		return SRC_ERR_BAD_STATE ;
-
-	if (state->mode != SRC_MODE_PROCESS)
-		return SRC_ERR_BAD_MODE ;
-
-	/* Check for valid SRC_DATA first. */
-	if (data == NULL)
-		return SRC_ERR_BAD_DATA ;
-
-	/* And that data_in and data_out are valid. */
-	if ((data->data_in == NULL && data->input_frames > 0)
-			|| (data->data_out == NULL && data->output_frames > 0))
-		return SRC_ERR_BAD_DATA_PTR ;
-
-	/* Check src_ratio is in range. */
-	if (is_bad_src_ratio (data->src_ratio))
-		return SRC_ERR_BAD_SRC_RATIO ;
-
-	if (data->input_frames < 0)
-		data->input_frames = 0 ;
-	if (data->output_frames < 0)
-		data->output_frames = 0 ;
-
-	if (data->data_in < data->data_out)
-	{	if (data->data_in + data->input_frames * state->channels > data->data_out)
-		{	/*-printf ("\n\ndata_in: %p    data_out: %p\n",
-				(void*) (data->data_in + data->input_frames * psrc->channels), (void*) data->data_out) ;-*/
-			return SRC_ERR_DATA_OVERLAP ;
-			} ;
-		}
-	else if (data->data_out + data->output_frames * state->channels > data->data_in)
-	{	/*-printf ("\n\ndata_in : %p   ouput frames: %ld    data_out: %p\n", (void*) data->data_in, data->output_frames, (void*) data->data_out) ;
-
-		printf ("data_out: %p (%p)    data_in: %p\n", (void*) data->data_out,
-			(void*) (data->data_out + data->input_frames * psrc->channels), (void*) data->data_in) ;-*/
-		return SRC_ERR_DATA_OVERLAP ;
-		} ;
-
-	/* Set the input and output counts to zero. */
-	data->input_frames_used = 0 ;
-	data->output_frames_gen = 0 ;
-
-	/* Special case for when last_ratio has not been set. */
-	if (state->last_ratio < (1.0 / SRC_MAX_RATIO))
-		state->last_ratio = data->src_ratio ;
-
-	/* Now process. */
-	if (fabs (state->last_ratio - data->src_ratio) < 1e-15)
-		error = state->vt->const_process (state, data) ;
-	else
-		error = state->vt->vari_process (state, data) ;
-
-	return error ;
-} /* src_process */
-
-long
-src_callback_read (SRC_STATE *state, float src_ratio, long frames, float *data)
-{
-	SRC_DATA	src_data ;
-
-	long	output_frames_gen ;
-	int		error = 0 ;
-
-	if (state == NULL)
-		return 0 ;
-
-	if (frames <= 0)
-		return 0 ;
-
-	if (state->mode != SRC_MODE_CALLBACK)
-	{	state->error = SRC_ERR_BAD_MODE ;
-		return 0 ;
-		} ;
-
-	if (state->callback_func == NULL)
-	{	state->error = SRC_ERR_NULL_CALLBACK ;
-		return 0 ;
-		} ;
-
-	memset (&src_data, 0, sizeof (src_data)) ;
-
-	/* Check src_ratio is in range. */
-	if (is_bad_src_ratio (src_ratio))
-	{	state->error = SRC_ERR_BAD_SRC_RATIO ;
-		return 0 ;
-		} ;
-
-	/* Switch modes temporarily. */
-	src_data.src_ratio = src_ratio ;
-	src_data.data_out = data ;
-	src_data.output_frames = frames ;
-
-	src_data.data_in = state->saved_data ;
-	src_data.input_frames = state->saved_frames ;
-
-	output_frames_gen = 0 ;
-	while (output_frames_gen < frames)
-	{	/*	Use a dummy array for the case where the callback function
-		**	returns without setting the ptr.
-		*/
-		float dummy [1] ;
-
-		if (src_data.input_frames == 0)
-		{	float *ptr = dummy ;
-
-			src_data.input_frames = state->callback_func (state->user_callback_data, &ptr) ;
-			src_data.data_in = ptr ;
-
-			if (src_data.input_frames == 0)
-				src_data.end_of_input = 1 ;
-			} ;
-
-		/*
-		** Now call process function. However, we need to set the mode
-		** to SRC_MODE_PROCESS first and when we return set it back to
-		** SRC_MODE_CALLBACK.
-		*/
-		state->mode = SRC_MODE_PROCESS ;
-		error = src_process (state, &src_data) ;
-		state->mode = SRC_MODE_CALLBACK ;
-
-		if (error != 0)
-			break ;
-
-		src_data.data_in += src_data.input_frames_used * state->channels ;
-		src_data.input_frames -= src_data.input_frames_used ;
-
-		src_data.data_out += src_data.output_frames_gen * state->channels ;
-		src_data.output_frames -= src_data.output_frames_gen ;
-
-		output_frames_gen += src_data.output_frames_gen ;
-
-		if (src_data.end_of_input == SRC_TRUE && src_data.output_frames_gen == 0)
-			break ;
-		} ;
-
-	state->saved_data = src_data.data_in ;
-	state->saved_frames = src_data.input_frames ;
-
-	if (error != 0)
-	{	state->error = (SRC_ERROR) error ;
-		return 0 ;
-		} ;
-
-	return output_frames_gen ;
-} /* src_callback_read */
-
-/*==========================================================================
-*/
-
-int
-src_set_ratio (SRC_STATE *state, float new_ratio)
-{
-	if (state == NULL)
-		return SRC_ERR_BAD_STATE ;
-
-	if (is_bad_src_ratio (new_ratio))
-		return SRC_ERR_BAD_SRC_RATIO ;
-
-	state->last_ratio = new_ratio ;
-
-	return SRC_ERR_NO_ERROR ;
-} /* src_set_ratio */
-
-int
-src_get_channels (SRC_STATE *state)
-{
-	if (state == NULL)
-		return -SRC_ERR_BAD_STATE ;
-
-	return state->channels ;
-} /* src_get_channels */
-
-int
-src_reset (SRC_STATE *state)
-{
-	if (state == NULL)
-		return SRC_ERR_BAD_STATE ;
-
-	state->vt->reset (state) ;
-
-	state->last_position = 0.0 ;
-	state->last_ratio = 0.0 ;
-
-	state->saved_data = NULL ;
-	state->saved_frames = 0 ;
-
-	state->error = SRC_ERR_NO_ERROR ;
-
-	return SRC_ERR_NO_ERROR ;
-} /* src_reset */
-
-/*==============================================================================
-**	Control functions.
-*/
-
-const char *
-src_get_name (int converter_type)
-{	const char *desc ;
-
-	if ((desc = sinc_get_name (converter_type)) != NULL)
-		return desc ;
-
-	if ((desc = zoh_get_name (converter_type)) != NULL)
-		return desc ;
-
-	if ((desc = linear_get_name (converter_type)) != NULL)
-		return desc ;
-
-	return NULL ;
-} /* src_get_name */
-
-const char *
-src_get_description (int converter_type)
-{	const char *desc ;
-
-	if ((desc = sinc_get_description (converter_type)) != NULL)
-		return desc ;
-
-	if ((desc = zoh_get_description (converter_type)) != NULL)
-		return desc ;
-
-	if ((desc = linear_get_description (converter_type)) != NULL)
-		return desc ;
-
-	return NULL ;
-} /* src_get_description */
-
-const char *
-src_get_version (void)
-{	return PACKAGE "-" VERSION " (c) 2002-2008 Erik de Castro Lopo" ;
-} /* src_get_version */
-
-int
-src_is_valid_ratio (float ratio)
-{
-	if (is_bad_src_ratio (ratio))
-		return SRC_FALSE ;
-
-	return SRC_TRUE ;
-} /* src_is_valid_ratio */
-
-/*==============================================================================
-**	Error reporting functions.
-*/
-
-int
-src_error (SRC_STATE *state)
-{	if (state)
-		return state->error ;
-	return SRC_ERR_NO_ERROR ;
-} /* src_error */
-
-const char*
-src_strerror (int error)
-{
-	switch (error)
-	{	case SRC_ERR_NO_ERROR :
-				return "No error." ;
-		case SRC_ERR_MALLOC_FAILED :
-				return "Malloc failed." ;
-		case SRC_ERR_BAD_STATE :
-				return "SRC_STATE pointer is NULL." ;
-		case SRC_ERR_BAD_DATA :
-				return "SRC_DATA pointer is NULL." ;
-		case SRC_ERR_BAD_DATA_PTR :
-				return "SRC_DATA->data_out or SRC_DATA->data_in is NULL." ;
-		case SRC_ERR_NO_PRIVATE :
-				return "Internal error. No private data." ;
-
-		case SRC_ERR_BAD_SRC_RATIO :
-				return "SRC ratio outside [1/" SRC_MAX_RATIO_STR ", " SRC_MAX_RATIO_STR "] range." ;
-
-		case SRC_ERR_BAD_SINC_STATE :
-				return "src_process() called without reset after end_of_input." ;
-		case SRC_ERR_BAD_PROC_PTR :
-				return "Internal error. No process pointer." ;
-		case SRC_ERR_SHIFT_BITS :
-				return "Internal error. SHIFT_BITS too large." ;
-		case SRC_ERR_FILTER_LEN :
-				return "Internal error. Filter length too large." ;
-		case SRC_ERR_BAD_CONVERTER :
-				return "Bad converter number." ;
-		case SRC_ERR_BAD_CHANNEL_COUNT :
-				return "Channel count must be >= 1." ;
-		case SRC_ERR_SINC_BAD_BUFFER_LEN :
-				return "Internal error. Bad buffer length. Please report this." ;
-		case SRC_ERR_SIZE_INCOMPATIBILITY :
-				return "Internal error. Input data / internal buffer size difference. Please report this." ;
-		case SRC_ERR_BAD_PRIV_PTR :
-				return "Internal error. Private pointer is NULL. Please report this." ;
-		case SRC_ERR_DATA_OVERLAP :
-				return "Input and output data arrays overlap." ;
-		case SRC_ERR_BAD_CALLBACK :
-				return "Supplied callback function pointer is NULL." ;
-		case SRC_ERR_BAD_MODE :
-				return "Calling mode differs from initialisation mode (ie process v callback)." ;
-		case SRC_ERR_NULL_CALLBACK :
-				return "Callback function pointer is NULL in src_callback_read ()." ;
-		case SRC_ERR_NO_VARIABLE_RATIO :
-				return "This converter only allows constant conversion ratios." ;
-		case SRC_ERR_SINC_PREPARE_DATA_BAD_LEN :
-				return "Internal error : Bad length in prepare_data ()." ;
-		case SRC_ERR_BAD_INTERNAL_STATE :
-				return "Error : Someone is trampling on my internal state." ;
-
-		case SRC_ERR_MAX_ERROR :
-				return "Placeholder. No error defined for this error number." ;
-
-		default : 						break ;
-		}
-
-	return NULL ;
-} /* src_strerror */
-
-/*==============================================================================
-**	Simple interface for performing a single conversion from input buffer to
-**	output buffer at a fixed conversion ratio.
-*/
-
-int
-src_simple (SRC_DATA *src_data, int converter, int channels)
-{	SRC_STATE	*src_state ;
-	int 		error ;
-
-	if ((src_state = src_new (converter, channels, &error)) == NULL)
-		return error ;
-
-	src_data->end_of_input = 1 ; /* Only one buffer worth of input. */
-
-	error = src_process (src_state, src_data) ;
-
-	src_delete (src_state) ;
-
-	return error ;
-} /* src_simple */
-
-void
-src_short_to_float_array (const short *in, float *out, int len)
-{
-	for (int i = 0 ; i < len ; i++)
-	{	out [i] = (float) (in [i] / (1.0 * 0x8000)) ;
-		} ;
-
-	return ;
-} /* src_short_to_float_array */
-
-void
-src_float_to_short_array (const float *in, short *out, int len)
-{
-	for (int i = 0 ; i < len ; i++)
-	{	float scaled_value ;
-		scaled_value = in [i] * 32768.f ;
-		if (scaled_value >= 32767.f)
-			out [i] = 32767 ;
-		else if (scaled_value <= -32768.f)
-			out [i] = -32768 ;
-		else
-			out [i] = (short) (psf_lrintf (scaled_value)) ;
-	}
-} /* src_float_to_short_array */
-
-void
-src_int_to_float_array (const int *in, float *out, int len)
-{
-	for (int i = 0 ; i < len ; i++)
-	{	out [i] = (float) (in [i] / (8.0 * 0x10000000)) ;
-		} ;
-
-	return ;
-} /* src_int_to_float_array */
-
-void
-src_float_to_int_array (const float *in, int *out, int len)
-{	float scaled_value ;
-
-	for (int i = 0 ; i < len ; i++)
-	{	scaled_value = in [i] * (8.0 * 0x10000000) ;
-#if CPU_CLIPS_POSITIVE == 0
-		if (scaled_value >= (1.0 * 0x7FFFFFFF))
-		{	out [i] = 0x7fffffff ;
-			continue ;
-			} ;
-#endif
-#if CPU_CLIPS_NEGATIVE == 0
-		if (scaled_value <= (-8.0 * 0x10000000))
-		{	out [i] = -1 - 0x7fffffff ;
-			continue ;
-			} ;
-#endif
-		out [i] = (int) psf_lrint (scaled_value) ;
-		} ;
-
-} /* src_float_to_int_array */
-
-/*==============================================================================
-**	Private functions.
-*/
-
-static SRC_STATE *
-psrc_set_converter (int converter_type, int channels, int *error)
-{
-	SRC_ERROR temp_error;
-	SRC_STATE *state ;
-	switch (converter_type)
-	{
-#ifdef ENABLE_SINC_BEST_CONVERTER
-	case SRC_SINC_BEST_QUALITY :
-		state = sinc_state_new (converter_type, channels, &temp_error) ;
-		break ;
-#endif
-#ifdef ENABLE_SINC_MEDIUM_CONVERTER
-	case SRC_SINC_MEDIUM_QUALITY :
-		state = sinc_state_new (converter_type, channels, &temp_error) ;
-		break ;
-#endif
-#ifdef ENABLE_SINC_FAST_CONVERTER
-	case SRC_SINC_FASTEST :
-		state = sinc_state_new (converter_type, channels, &temp_error) ;
-		break ;
-#endif
-	case SRC_ZERO_ORDER_HOLD :
-		state = zoh_state_new (channels, &temp_error) ;
-		break ;
-	case SRC_LINEAR :
-		state = linear_state_new (channels, &temp_error) ;
-		break ;
-	default :
-		temp_error = SRC_ERR_BAD_CONVERTER ;
-		state = NULL ;
-		break ;
-	}
-
-	if (error)
-		*error = (int) temp_error ;
-
-	return state ;
-} /* psrc_set_converter */
-