#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"
Go to the source code of this file.
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] |
#define FIXED_STACK_ALLOC 1024 |
Definition at line 111 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define IMAX | ( | a, | |
b | |||
) | ((a) > (b) ? (a) : (b)) |
Definition at line 88 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define IMIN | ( | a, | |
b | |||
) | ((a) < (b) ? (a) : (b)) |
Definition at line 89 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define KAISER10 (&kaiser10_funcdef) |
Definition at line 202 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define KAISER12 (&kaiser12_funcdef) |
Definition at line 200 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define KAISER6 (&kaiser6_funcdef) |
Definition at line 206 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define KAISER8 (&kaiser8_funcdef) |
Definition at line 204 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define M_PI 3.14159265358979323846 |
Definition at line 85 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define NULL 0 |
Definition at line 92 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
#define UINT32_MAX 4294967295U |
Definition at line 96 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 240 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 1095 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 318 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 593 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 389 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 331 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 501 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 438 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 565 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 288 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_destroy | ( | SpeexResamplerState * | st | ) |
Destroy a resampler state.
st | Resampler state |
Definition at line 868 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT int speex_resampler_get_input_latency | ( | SpeexResamplerState * | st | ) |
Get the latency introduced by the resampler measured in input samples.
st | Resampler state |
Definition at line 1190 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_get_input_stride | ( | SpeexResamplerState * | st, |
spx_uint32_t * | stride | ||
) |
Get the input stride.
st | Resampler state |
stride | Input stride copied |
Definition at line 1175 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT int speex_resampler_get_output_latency | ( | SpeexResamplerState * | st | ) |
Get the latency introduced by the resampler measured in output samples.
st | Resampler state |
Definition at line 1195 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_get_output_stride | ( | SpeexResamplerState * | st, |
spx_uint32_t * | stride | ||
) |
Get the output stride.
st | Resampler state copied |
stride | Output stride |
Definition at line 1185 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_get_quality | ( | SpeexResamplerState * | st, |
int * | quality | ||
) |
Get the conversion quality.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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).
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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. |
NULL | Error: not enough memory |
Definition at line 794 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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. |
NULL | Error: not enough memory |
Definition at line 799 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 904 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 878 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT int speex_resampler_reset_mem | ( | SpeexResamplerState * | st | ) |
Reset a resampler so a new (unrelated) stream can be processed.
st | Resampler state |
Definition at line 1208 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_set_input_stride | ( | SpeexResamplerState * | st, |
spx_uint32_t | stride | ||
) |
Set (change) the input stride.
st | Resampler state |
stride | Input stride |
Definition at line 1170 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT void speex_resampler_set_output_stride | ( | SpeexResamplerState * | st, |
spx_uint32_t | stride | ||
) |
Set (change) the output stride.
st | Resampler state |
stride | Output stride |
Definition at line 1180 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
EXPORT int speex_resampler_set_quality | ( | SpeexResamplerState * | st, |
int | quality | ||
) |
Set (change) the conversion quality.
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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).
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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).
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 rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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).
st | Resampler state |
Definition at line 1200 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
const EXPORT char* speex_resampler_strerror | ( | int | err | ) |
Returns the English meaning for an error code
err | Error code |
Definition at line 1222 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 605 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 201 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 170 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 199 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 148 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 205 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 186 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 203 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 178 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.
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Definition at line 226 of file rhino/demo/c/dr_libs/tests/external/miniaudio/extras/speex_resampler/thirdparty/resample.c.