porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c File Reference

#include "speex/speex_resampler.h"
#include "arch.h"
#include "os_support.h"
#include <math.h>
#include <limits.h>
#include <stdlib.h>
#include "speex_resampler.h"

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Classes
struct	FuncDef
struct	QualityMapping
struct	SpeexResamplerState_

Macros
#define	FIXED_STACK_ALLOC   1024
#define	IMAX(a, b)   ((a) > (b) ? (a) : (b))
#define	IMIN(a, b)   ((a) < (b) ? (a) : (b))
#define	KAISER10   (&kaiser10_funcdef)
#define	KAISER12   (&kaiser12_funcdef)
#define	KAISER6   (&kaiser6_funcdef)
#define	KAISER8   (&kaiser8_funcdef)
#define	M_PI   3.14159265358979323846
#define	NULL   0
#define	UINT32_MAX   4294967295U

Typedefs
typedef int(*	resampler_basic_func) (SpeexResamplerState *, spx_uint32_t, const spx_word16_t *, spx_uint32_t *, spx_word16_t *, spx_uint32_t *)

Functions
static double	compute_func (float x, const struct FuncDef *func)
static spx_uint32_t	compute_gcd (spx_uint32_t a, spx_uint32_t b)
static void	cubic_coef (spx_word16_t frac, spx_word16_t interp[4])
static int	multiply_frac (spx_uint32_t *result, spx_uint32_t value, spx_uint32_t num, spx_uint32_t den)
static int	resampler_basic_direct_double (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
static int	resampler_basic_direct_single (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
static int	resampler_basic_interpolate_double (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
static int	resampler_basic_interpolate_single (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
static int	resampler_basic_zero (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
static spx_word16_t	sinc (float cutoff, float x, int N, const struct FuncDef *window_func)
EXPORT void	speex_resampler_destroy (SpeexResamplerState *st)
EXPORT int	speex_resampler_get_input_latency (SpeexResamplerState *st)
EXPORT void	speex_resampler_get_input_stride (SpeexResamplerState *st, spx_uint32_t *stride)
EXPORT int	speex_resampler_get_output_latency (SpeexResamplerState *st)
EXPORT void	speex_resampler_get_output_stride (SpeexResamplerState *st, spx_uint32_t *stride)
EXPORT void	speex_resampler_get_quality (SpeexResamplerState *st, int *quality)
EXPORT void	speex_resampler_get_rate (SpeexResamplerState *st, spx_uint32_t *in_rate, spx_uint32_t *out_rate)
EXPORT void	speex_resampler_get_ratio (SpeexResamplerState *st, spx_uint32_t *ratio_num, spx_uint32_t *ratio_den)
EXPORT SpeexResamplerState *	speex_resampler_init (spx_uint32_t nb_channels, spx_uint32_t in_rate, spx_uint32_t out_rate, int quality, int *err)
EXPORT SpeexResamplerState *	speex_resampler_init_frac (spx_uint32_t nb_channels, spx_uint32_t ratio_num, spx_uint32_t ratio_den, spx_uint32_t in_rate, spx_uint32_t out_rate, int quality, int *err)
static int	speex_resampler_magic (SpeexResamplerState *st, spx_uint32_t channel_index, spx_word16_t **out, spx_uint32_t out_len)
EXPORT int	speex_resampler_process_float (SpeexResamplerState *st, spx_uint32_t channel_index, const float *in, spx_uint32_t *in_len, float *out, spx_uint32_t *out_len)
EXPORT int	speex_resampler_process_int (SpeexResamplerState *st, spx_uint32_t channel_index, const spx_int16_t *in, spx_uint32_t *in_len, spx_int16_t *out, spx_uint32_t *out_len)
EXPORT int	speex_resampler_process_interleaved_float (SpeexResamplerState *st, const float *in, spx_uint32_t *in_len, float *out, spx_uint32_t *out_len)
EXPORT int	speex_resampler_process_interleaved_int (SpeexResamplerState *st, const spx_int16_t *in, spx_uint32_t *in_len, spx_int16_t *out, spx_uint32_t *out_len)
static int	speex_resampler_process_native (SpeexResamplerState *st, spx_uint32_t channel_index, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
EXPORT int	speex_resampler_reset_mem (SpeexResamplerState *st)
EXPORT void	speex_resampler_set_input_stride (SpeexResamplerState *st, spx_uint32_t stride)
EXPORT void	speex_resampler_set_output_stride (SpeexResamplerState *st, spx_uint32_t stride)
EXPORT int	speex_resampler_set_quality (SpeexResamplerState *st, int quality)
EXPORT int	speex_resampler_set_rate (SpeexResamplerState *st, spx_uint32_t in_rate, spx_uint32_t out_rate)
EXPORT int	speex_resampler_set_rate_frac (SpeexResamplerState *st, spx_uint32_t ratio_num, spx_uint32_t ratio_den, spx_uint32_t in_rate, spx_uint32_t out_rate)
EXPORT int	speex_resampler_skip_zeros (SpeexResamplerState *st)
const EXPORT char *	speex_resampler_strerror (int err)
static int	update_filter (SpeexResamplerState *st)

Variables
static const struct FuncDef	kaiser10_funcdef = {kaiser10_table, 32}
static const double	kaiser10_table [36]
static const struct FuncDef	kaiser12_funcdef = {kaiser12_table, 64}
static const double	kaiser12_table [68]
static const struct FuncDef	kaiser6_funcdef = {kaiser6_table, 32}
static const double	kaiser6_table [36]
static const struct FuncDef	kaiser8_funcdef = {kaiser8_table, 32}
static const double	kaiser8_table [36]
static const struct QualityMapping	quality_map [11]

Macro Definition Documentation

FIXED_STACK_ALLOC

#define FIXED_STACK_ALLOC   1024

Definition at line 111 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

IMAX

#define IMAX	(		a,
			b
	)		((a) > (b) ? (a) : (b))

Definition at line 88 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

IMIN

#define IMIN	(		a,
			b
	)		((a) < (b) ? (a) : (b))

Definition at line 89 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

KAISER10

#define KAISER10   (&kaiser10_funcdef)

Definition at line 202 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

KAISER12

#define KAISER12   (&kaiser12_funcdef)

Definition at line 200 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

KAISER6

#define KAISER6   (&kaiser6_funcdef)

Definition at line 206 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

KAISER8

#define KAISER8   (&kaiser8_funcdef)

Definition at line 204 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

M_PI

#define M_PI   3.14159265358979323846

Definition at line 85 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

NULL

#define NULL   0

Definition at line 92 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

UINT32_MAX

#define UINT32_MAX   4294967295U

Definition at line 96 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

Typedef Documentation

resampler_basic_func

typedef int(* resampler_basic_func) (SpeexResamplerState *, spx_uint32_t, const spx_word16_t *, spx_uint32_t *, spx_word16_t *, spx_uint32_t *)

Definition at line 114 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

Function Documentation

compute_func()

static double compute_func ( float  x, const struct FuncDef *  func  )

static

Definition at line 240 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

compute_gcd()

static spx_uint32_t compute_gcd ( spx_uint32_t  a, spx_uint32_t  b  )

inlinestatic

Definition at line 1095 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

cubic_coef()

static void cubic_coef ( spx_word16_t  frac, spx_word16_t  interp[4]  )

static

Definition at line 318 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

multiply_frac()

static int multiply_frac ( spx_uint32_t *  result, spx_uint32_t  value, spx_uint32_t  num, spx_uint32_t  den  )

static

Definition at line 593 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

resampler_basic_direct_double()

static int resampler_basic_direct_double ( SpeexResamplerState *  st, spx_uint32_t  channel_index, const spx_word16_t *  in, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 389 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

resampler_basic_direct_single()

static int resampler_basic_direct_single ( SpeexResamplerState *  st, spx_uint32_t  channel_index, const spx_word16_t *  in, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 331 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

resampler_basic_interpolate_double()

static int resampler_basic_interpolate_double ( SpeexResamplerState *  st, spx_uint32_t  channel_index, const spx_word16_t *  in, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 501 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

resampler_basic_interpolate_single()

static int resampler_basic_interpolate_single ( SpeexResamplerState *  st, spx_uint32_t  channel_index, const spx_word16_t *  in, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 438 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

resampler_basic_zero()

static int resampler_basic_zero ( SpeexResamplerState *  st, spx_uint32_t  channel_index, const spx_word16_t *  in, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 565 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

sinc()

static spx_word16_t sinc ( float  cutoff, float  x, int  N, const struct FuncDef *  window_func  )

static

Definition at line 288 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_destroy()

EXPORT void speex_resampler_destroy

(

SpeexResamplerState *

st

)

Destroy a resampler state.

Parameters

st	Resampler state

Definition at line 868 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_input_latency()

EXPORT int speex_resampler_get_input_latency

(

SpeexResamplerState *

st

)

Get the latency introduced by the resampler measured in input samples.

Parameters

st	Resampler state

Definition at line 1190 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_input_stride()

EXPORT void speex_resampler_get_input_stride	(	SpeexResamplerState *	st,
		spx_uint32_t *	stride
	)

Get the input stride.

Parameters

st	Resampler state
stride	Input stride copied

Definition at line 1175 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_output_latency()

EXPORT int speex_resampler_get_output_latency

(

SpeexResamplerState *

st

)

Get the latency introduced by the resampler measured in output samples.

Parameters

st	Resampler state

Definition at line 1195 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_output_stride()

EXPORT void speex_resampler_get_output_stride	(	SpeexResamplerState *	st,
		spx_uint32_t *	stride
	)

Get the output stride.

Parameters

st	Resampler state copied
stride	Output stride

Definition at line 1185 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_quality()

EXPORT void speex_resampler_get_quality	(	SpeexResamplerState *	st,
		int *	quality
	)

Get the conversion quality.

Parameters

st	Resampler state
quality	Resampling quality between 0 and 10, where 0 has poor quality and 10 has very high quality.

Definition at line 1165 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_rate()

EXPORT void speex_resampler_get_rate	(	SpeexResamplerState *	st,
		spx_uint32_t *	in_rate,
		spx_uint32_t *	out_rate
	)

Get the current input/output sampling rates (integer value).

Parameters

st	Resampler state
in_rate	Input sampling rate (integer number of Hz) copied.
out_rate	Output sampling rate (integer number of Hz) copied.

Definition at line 1089 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_get_ratio()

EXPORT void speex_resampler_get_ratio	(	SpeexResamplerState *	st,
		spx_uint32_t *	ratio_num,
		spx_uint32_t *	ratio_den
	)

Get the current resampling ratio. This will be reduced to the least common denominator.

Parameters

st	Resampler state
ratio_num	Numerator of the sampling rate ratio copied
ratio_den	Denominator of the sampling rate ratio copied

Definition at line 1147 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_init()

EXPORT SpeexResamplerState* speex_resampler_init	(	spx_uint32_t	nb_channels,
		spx_uint32_t	in_rate,
		spx_uint32_t	out_rate,
		int	quality,
		int *	err
	)

Create a new resampler with integer input and output rates.

Parameters

nb_channels	Number of channels to be processed
in_rate	Input sampling rate (integer number of Hz).
out_rate	Output sampling rate (integer number of Hz).
quality	Resampling quality between 0 and 10, where 0 has poor quality and 10 has very high quality.

Returns

Newly created resampler state

Return values

NULL	Error: not enough memory

Definition at line 794 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_init_frac()

EXPORT SpeexResamplerState* speex_resampler_init_frac	(	spx_uint32_t	nb_channels,
		spx_uint32_t	ratio_num,
		spx_uint32_t	ratio_den,
		spx_uint32_t	in_rate,
		spx_uint32_t	out_rate,
		int	quality,
		int *	err
	)

Create a new resampler with fractional input/output rates. The sampling rate ratio is an arbitrary rational number with both the numerator and denominator being 32-bit integers.

Parameters

nb_channels	Number of channels to be processed
ratio_num	Numerator of the sampling rate ratio
ratio_den	Denominator of the sampling rate ratio
in_rate	Input sampling rate rounded to the nearest integer (in Hz).
out_rate	Output sampling rate rounded to the nearest integer (in Hz).
quality	Resampling quality between 0 and 10, where 0 has poor quality and 10 has very high quality.

Returns

Newly created resampler state

Return values

NULL	Error: not enough memory

Definition at line 799 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_magic()

static int speex_resampler_magic ( SpeexResamplerState *  st, spx_uint32_t  channel_index, spx_word16_t **  out, spx_uint32_t  out_len  )

static

Definition at line 904 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_process_float()

EXPORT int speex_resampler_process_float	(	SpeexResamplerState *	st,
		spx_uint32_t	channel_index,
		const float *	in,
		spx_uint32_t *	in_len,
		float *	out,
		spx_uint32_t *	out_len
	)

Resample a float array. The input and output buffers must not overlap.

Parameters

st	Resampler state
channel_index	Index of the channel to process for the multi-channel base (0 otherwise)
in	Input buffer
in_len	Number of input samples in the input buffer. Returns the number of samples processed
out	Output buffer
out_len	Size of the output buffer. Returns the number of samples written

Definition at line 927 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_process_int()

EXPORT int speex_resampler_process_int	(	SpeexResamplerState *	st,
		spx_uint32_t	channel_index,
		const spx_int16_t *	in,
		spx_uint32_t *	in_len,
		spx_int16_t *	out,
		spx_uint32_t *	out_len
	)

Resample an int array. The input and output buffers must not overlap.

Parameters

st	Resampler state
channel_index	Index of the channel to process for the multi-channel base (0 otherwise)
in	Input buffer
in_len	Number of input samples in the input buffer. Returns the number of samples processed
out	Output buffer
out_len	Size of the output buffer. Returns the number of samples written

Definition at line 968 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_process_interleaved_float()

EXPORT int speex_resampler_process_interleaved_float	(	SpeexResamplerState *	st,
		const float *	in,
		spx_uint32_t *	in_len,
		float *	out,
		spx_uint32_t *	out_len
	)

Resample an interleaved float array. The input and output buffers must not overlap.

Parameters

st	Resampler state
in	Input buffer
in_len	Number of input samples in the input buffer. Returns the number of samples processed. This is all per-channel.
out	Output buffer
out_len	Size of the output buffer. Returns the number of samples written. This is all per-channel.

Definition at line 1038 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_process_interleaved_int()

EXPORT int speex_resampler_process_interleaved_int	(	SpeexResamplerState *	st,
		const spx_int16_t *	in,
		spx_uint32_t *	in_len,
		spx_int16_t *	out,
		spx_uint32_t *	out_len
	)

Resample an interleaved int array. The input and output buffers must not overlap.

Parameters

st	Resampler state
in	Input buffer
in_len	Number of input samples in the input buffer. Returns the number of samples processed. This is all per-channel.
out	Output buffer
out_len	Size of the output buffer. Returns the number of samples written. This is all per-channel.

Definition at line 1061 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_process_native()

static int speex_resampler_process_native ( SpeexResamplerState *  st, spx_uint32_t  channel_index, spx_uint32_t *  in_len, spx_word16_t *  out, spx_uint32_t *  out_len  )

static

Definition at line 878 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_reset_mem()

EXPORT int speex_resampler_reset_mem

(

SpeexResamplerState *

st

)

Reset a resampler so a new (unrelated) stream can be processed.

Parameters

st	Resampler state

Definition at line 1208 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_set_input_stride()

EXPORT void speex_resampler_set_input_stride	(	SpeexResamplerState *	st,
		spx_uint32_t	stride
	)

Set (change) the input stride.

Parameters

st	Resampler state
stride	Input stride

Definition at line 1170 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_set_output_stride()

EXPORT void speex_resampler_set_output_stride	(	SpeexResamplerState *	st,
		spx_uint32_t	stride
	)

Set (change) the output stride.

Parameters

st	Resampler state
stride	Output stride

Definition at line 1180 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_set_quality()

EXPORT int speex_resampler_set_quality	(	SpeexResamplerState *	st,
		int	quality
	)

Set (change) the conversion quality.

Parameters

st	Resampler state
quality	Resampling quality between 0 and 10, where 0 has poor quality and 10 has very high quality.

Definition at line 1153 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_set_rate()

EXPORT int speex_resampler_set_rate	(	SpeexResamplerState *	st,
		spx_uint32_t	in_rate,
		spx_uint32_t	out_rate
	)

Set (change) the input/output sampling rates (integer value).

Parameters

st	Resampler state
in_rate	Input sampling rate (integer number of Hz).
out_rate	Output sampling rate (integer number of Hz).

Definition at line 1084 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_set_rate_frac()

EXPORT int speex_resampler_set_rate_frac	(	SpeexResamplerState *	st,
		spx_uint32_t	ratio_num,
		spx_uint32_t	ratio_den,
		spx_uint32_t	in_rate,
		spx_uint32_t	out_rate
	)

Set (change) the input/output sampling rates and resampling ratio (fractional values in Hz supported).

Parameters

st	Resampler state
ratio_num	Numerator of the sampling rate ratio
ratio_den	Denominator of the sampling rate ratio
in_rate	Input sampling rate rounded to the nearest integer (in Hz).
out_rate	Output sampling rate rounded to the nearest integer (in Hz).

Definition at line 1107 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_skip_zeros()

EXPORT int speex_resampler_skip_zeros

(

SpeexResamplerState *

st

)

Make sure that the first samples to go out of the resamplers don't have leading zeros. This is only useful before starting to use a newly created resampler. It is recommended to use that when resampling an audio file, as it will generate a file with the same length. For real-time processing, it is probably easier not to use this call (so that the output duration is the same for the first frame).

Parameters

st	Resampler state

Definition at line 1200 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

speex_resampler_strerror()

const EXPORT char* speex_resampler_strerror

(

int

err

)

Returns the English meaning for an error code

Parameters

err	Error code

Returns

English string

Definition at line 1222 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

update_filter()

static int update_filter ( SpeexResamplerState *  st )

static

Definition at line 605 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

Variable Documentation

kaiser10_funcdef

const struct FuncDef kaiser10_funcdef = {kaiser10_table, 32}

static

Definition at line 201 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser10_table

const double kaiser10_table[36]

static

Initial value:

= {
   0.99537781, 1.00000000, 0.99537781, 0.98162644, 0.95908712, 0.92831446,
   0.89005583, 0.84522401, 0.79486424, 0.74011713, 0.68217934, 0.62226347,
   0.56155915, 0.50119680, 0.44221549, 0.38553619, 0.33194107, 0.28205962,
   0.23636152, 0.19515633, 0.15859932, 0.12670280, 0.09935205, 0.07632451,
   0.05731132, 0.04193980, 0.02979584, 0.02044510, 0.01345224, 0.00839739,
   0.00488951, 0.00257636, 0.00115101, 0.00035515, 0.00000000, 0.00000000}

Definition at line 170 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser12_funcdef

const struct FuncDef kaiser12_funcdef = {kaiser12_table, 64}

static

Definition at line 199 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser12_table

const double kaiser12_table[68]

static

Initial value:

= {
   0.99859849, 1.00000000, 0.99859849, 0.99440475, 0.98745105, 0.97779076,
   0.96549770, 0.95066529, 0.93340547, 0.91384741, 0.89213598, 0.86843014,
   0.84290116, 0.81573067, 0.78710866, 0.75723148, 0.72629970, 0.69451601,
   0.66208321, 0.62920216, 0.59606986, 0.56287762, 0.52980938, 0.49704014,
   0.46473455, 0.43304576, 0.40211431, 0.37206735, 0.34301800, 0.31506490,
   0.28829195, 0.26276832, 0.23854851, 0.21567274, 0.19416736, 0.17404546,
   0.15530766, 0.13794294, 0.12192957, 0.10723616, 0.09382272, 0.08164178,
   0.07063950, 0.06075685, 0.05193064, 0.04409466, 0.03718069, 0.03111947,
   0.02584161, 0.02127838, 0.01736250, 0.01402878, 0.01121463, 0.00886058,
   0.00691064, 0.00531256, 0.00401805, 0.00298291, 0.00216702, 0.00153438,
   0.00105297, 0.00069463, 0.00043489, 0.00025272, 0.00013031, 0.0000527734,
   0.00001000, 0.00000000}

Definition at line 148 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser6_funcdef

const struct FuncDef kaiser6_funcdef = {kaiser6_table, 32}

static

Definition at line 205 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser6_table

const double kaiser6_table[36]

static

Initial value:

= {
   0.99733006, 1.00000000, 0.99733006, 0.98935595, 0.97618418, 0.95799003,
   0.93501423, 0.90755855, 0.87598009, 0.84068475, 0.80211977, 0.76076565,
   0.71712752, 0.67172623, 0.62508937, 0.57774224, 0.53019925, 0.48295561,
   0.43647969, 0.39120616, 0.34752997, 0.30580127, 0.26632152, 0.22934058,
   0.19505503, 0.16360756, 0.13508755, 0.10953262, 0.08693120, 0.06722600,
   0.05031820, 0.03607231, 0.02432151, 0.01487334, 0.00752000, 0.00000000}

Definition at line 186 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser8_funcdef

const struct FuncDef kaiser8_funcdef = {kaiser8_table, 32}

static

Definition at line 203 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

kaiser8_table

const double kaiser8_table[36]

static

Initial value:

= {
   0.99635258, 1.00000000, 0.99635258, 0.98548012, 0.96759014, 0.94302200,
   0.91223751, 0.87580811, 0.83439927, 0.78875245, 0.73966538, 0.68797126,
   0.63451750, 0.58014482, 0.52566725, 0.47185369, 0.41941150, 0.36897272,
   0.32108304, 0.27619388, 0.23465776, 0.19672670, 0.16255380, 0.13219758,
   0.10562887, 0.08273982, 0.06335451, 0.04724088, 0.03412321, 0.02369490,
   0.01563093, 0.00959968, 0.00527363, 0.00233883, 0.00050000, 0.00000000}

Definition at line 178 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.

quality_map

const struct QualityMapping quality_map[11]

static

Initial value:

= {
   {  8,  4, 0.830f, 0.860f, KAISER6 }, 
   { 16,  4, 0.850f, 0.880f, KAISER6 }, 
   { 32,  4, 0.882f, 0.910f, KAISER6 },   
   { 48,  8, 0.895f, 0.917f, KAISER8 },   
   { 64,  8, 0.921f, 0.940f, KAISER8 },   
   { 80, 16, 0.922f, 0.940f, KAISER10},   
   { 96, 16, 0.940f, 0.945f, KAISER10},   
   {128, 16, 0.950f, 0.950f, KAISER10},   
   {160, 16, 0.960f, 0.960f, KAISER10},   
   {192, 32, 0.968f, 0.968f, KAISER12},   
   {256, 32, 0.975f, 0.975f, KAISER12},  
}

Definition at line 226 of file porcupine/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.