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gstreamer/gst/audioresample/README
Sebastian Dröge 5dfcb63252 Rename files and types from speexresample to audioresample 
Rename files and types from speexresample to audioresample
to finish the move and to prevent any confusion.
2009-01-23 12:33:41 +01:00

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arch.h
fixed_arm4.h
fixed_arm5e.h
fixed_bfin.h
fixed_debug.h
fixed_generic.h
resample.c
speex_resampler.h
are taken from http://git.xiph.org/speex.git/ as of 2008-10-28.
The only changes are:
--- arch.h 2008-11-28 09:57:15.000000000 +0100
+++ arch.h 2008-11-28 09:57:37.000000000 +0100
@@ -78,7 +78,10 @@
#include "../include/speex/speex_types.h"
#endif
+#ifndef ABS
#define ABS(x) ((x) < 0 ? (-(x)) : (x)) /**< Absolute integer value. */
+#endif
+
#define ABS16(x) ((x) < 0 ? (-(x)) : (x)) /**< Absolute 16-bit value. */
#define MIN16(a,b) ((a) < (b) ? (a) : (b)) /**< Maximum 16-bit value. */
#define MAX16(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum 16-bit value. */
@@ -134,6 +137,28 @@
#else
+#ifdef DOUBLE_PRECISION
+typedef double spx_mem_t;
+typedef double spx_coef_t;
+typedef double spx_lsp_t;
+typedef double spx_sig_t;
+typedef double spx_word16_t;
+typedef double spx_word32_t;
+
+#define Q15ONE 1.0
+#define LPC_SCALING 1.
+#define SIG_SCALING 1.
+#define LSP_SCALING 1.
+#define GAMMA_SCALING 1.
+#define GAIN_SCALING 1.
+#define GAIN_SCALING_1 1.
+
+
+#define VERY_SMALL 1e-20
+#define VERY_LARGE32 1e20
+#define VERY_LARGE16 1e20
+#define Q15_ONE ((spx_word16_t)1.)
+#else /* !DOUBLE_PRECISION */
typedef float spx_mem_t;
typedef float spx_coef_t;
typedef float spx_lsp_t;
@@ -154,6 +179,7 @@
#define VERY_LARGE32 1e15f
#define VERY_LARGE16 1e15f
#define Q15_ONE ((spx_word16_t)1.f)
+#endif /* DOUBLE_PRECISION */
#define QCONST16(x,bits) (x)
#define QCONST32(x,bits) (x)
--- resample.c 2008-11-28 09:56:42.000000000 +0100
+++ resample.c 2008-11-01 20:38:35.000000000 +0100
@@ -63,22 +63,27 @@
#ifdef OUTSIDE_SPEEX
#include <stdlib.h>
-static void *
+
+#include <glib.h>
+
+#define EXPORT G_GNUC_INTERNAL
+
+static inline void *
speex_alloc (int size)
{
- return calloc (size, 1);
+ return g_malloc0 (size);
}
-static void *
+static inline void *
speex_realloc (void *ptr, int size)
{
- return realloc (ptr, size);
+ return g_realloc (ptr, size);
}
-static void
+static inline void
speex_free (void *ptr)
{
- free (ptr);
+ g_free (ptr);
}
#include "speex_resampler.h"
@@ -90,7 +95,6 @@
#include "os_support.h"
#endif /* OUTSIDE_SPEEX */
-#include "stack_alloc.h"
#include <math.h>
#ifndef M_PI
@@ -263,10 +267,17 @@
};
/*8,24,40,56,80,104,128,160,200,256,320*/
+#ifdef DOUBLE_PRECISION
+static double
+compute_func (double x, struct FuncDef *func)
+{
+ double y, frac;
+#else
static double
compute_func (float x, struct FuncDef *func)
{
float y, frac;
+#endif
double interp[4];
int ind;
y = x * func->oversample;
@@ -317,11 +328,19 @@
}
#else
/* The slow way of computing a sinc for the table. Should improve that some day */
+#ifdef DOUBLE_PRECISION
+static spx_word16_t
+sinc (double cutoff, double x, int N, struct FuncDef *window_func)
+{
+ /*fprintf (stderr, "%f ", x); */
+ double xx = x * cutoff;
+#else
static spx_word16_t
sinc (float cutoff, float x, int N, struct FuncDef *window_func)
{
/*fprintf (stderr, "%f ", x); */
float xx = x * cutoff;
+#endif
if (fabs (x) < 1e-6)
return cutoff;
else if (fabs (x) > .5 * N)
@@ -372,6 +391,7 @@
}
#endif
+#ifndef DOUBLE_PRECISION
static int
resampler_basic_direct_single (SpeexResamplerState * st,
spx_uint32_t channel_index, const spx_word16_t * in, spx_uint32_t * in_len,
@@ -421,6 +441,7 @@
st->samp_frac_num[channel_index] = samp_frac_num;
return out_sample;
}
+#endif
#ifdef FIXED_POINT
#else
@@ -476,6 +497,7 @@
}
#endif
+#ifndef DOUBLE_PRECISION
static int
resampler_basic_interpolate_single (SpeexResamplerState * st,
spx_uint32_t channel_index, const spx_word16_t * in, spx_uint32_t * in_len,
@@ -554,6 +576,7 @@
st->samp_frac_num[channel_index] = samp_frac_num;
return out_sample;
}
+#endif
#ifdef FIXED_POINT
#else
@@ -584,10 +607,16 @@
PDIV32 (SHL32 ((samp_frac_num * st->oversample) % st->den_rate, 15),
st->den_rate);
#else
+#ifdef DOUBLE_PRECISION
+ const spx_word16_t frac =
+ ((double) ((samp_frac_num * st->oversample) % st->den_rate)) /
+ st->den_rate;
+#else
const spx_word16_t frac =
((float) ((samp_frac_num * st->oversample) % st->den_rate)) /
st->den_rate;
#endif
+#endif
spx_word16_t interp[4];
@@ -688,20 +717,27 @@
spx_int32_t j;
for (j = 0; j < st->filt_len; j++) {
st->sinc_table[i * st->filt_len + j] =
- sinc (st->cutoff,
- ((j - (spx_int32_t) st->filt_len / 2 + 1) -
+ sinc (st->cutoff, ((j - (spx_int32_t) st->filt_len / 2 + 1) -
+#ifdef DOUBLE_PRECISION
+ ((double) i) / st->den_rate), st->filt_len,
+#else
((float) i) / st->den_rate), st->filt_len,
+#endif
quality_map[st->quality].window_func);
}
}
#ifdef FIXED_POINT
st->resampler_ptr = resampler_basic_direct_single;
#else
+#ifdef DOUBLE_PRECISION
+ st->resampler_ptr = resampler_basic_direct_double;
+#else
if (st->quality > 8)
st->resampler_ptr = resampler_basic_direct_double;
else
st->resampler_ptr = resampler_basic_direct_single;
#endif
+#endif
/*fprintf (stderr, "resampler uses direct sinc table and normalised cutoff %f\n", cutoff); */
} else {
spx_int32_t i;
@@ -717,16 +753,24 @@
}
for (i = -4; i < (spx_int32_t) (st->oversample * st->filt_len + 4); i++)
st->sinc_table[i + 4] =
+#ifdef DOUBLE_PRECISION
+ sinc (st->cutoff, (i / (double) st->oversample - st->filt_len / 2),
+#else
sinc (st->cutoff, (i / (float) st->oversample - st->filt_len / 2),
+#endif
st->filt_len, quality_map[st->quality].window_func);
#ifdef FIXED_POINT
st->resampler_ptr = resampler_basic_interpolate_single;
#else
+#ifdef DOUBLE_PRECISION
+ st->resampler_ptr = resampler_basic_interpolate_double;
+#else
if (st->quality > 8)
st->resampler_ptr = resampler_basic_interpolate_double;
else
st->resampler_ptr = resampler_basic_interpolate_single;
#endif
+#endif
/*fprintf (stderr, "resampler uses interpolated sinc table and normalised cutoff %f\n", cutoff); */
}
st->int_advance = st->num_rate / st->den_rate;
@@ -956,11 +1000,18 @@
spx_uint32_t channel_index, const spx_int16_t * in, spx_uint32_t * in_len,
spx_int16_t * out, spx_uint32_t * out_len)
#else
+#ifdef DOUBLE_PRECISION
+EXPORT int
+speex_resampler_process_float (SpeexResamplerState * st,
+ spx_uint32_t channel_index, const double *in, spx_uint32_t * in_len,
+ double *out, spx_uint32_t * out_len)
+#else
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)
#endif
+#endif
{
int j;
spx_uint32_t ilen = *in_len;
@@ -1078,9 +1129,16 @@
return RESAMPLER_ERR_SUCCESS;
}
+#ifdef DOUBLE_PRECISION
+EXPORT int
+speex_resampler_process_interleaved_float (SpeexResamplerState * st,
+ const double *in, spx_uint32_t * in_len, double *out,
+ spx_uint32_t * out_len)
+#else
EXPORT int
speex_resampler_process_interleaved_float (SpeexResamplerState * st,
const float *in, spx_uint32_t * in_len, float *out, spx_uint32_t * out_len)
+#endif
{
spx_uint32_t i;
int istride_save, ostride_save;
--- speex_resampler.h 2008-11-28 09:57:15.000000000 +0100
+++ speex_resampler.h 2008-11-28 09:57:37.000000000 +0100
@@ -77,10 +77,10 @@
#define speex_resampler_reset_mem CAT_PREFIX(RANDOM_PREFIX,_resampler_reset_mem)
#define speex_resampler_strerror CAT_PREFIX(RANDOM_PREFIX,_resampler_strerror)
-#define spx_int16_t short
-#define spx_int32_t int
-#define spx_uint16_t unsigned short
-#define spx_uint32_t unsigned int
+#define spx_int16_t gint16
+#define spx_int32_t gint32
+#define spx_uint16_t guint16
+#define spx_uint32_t guint32
#else /* OUTSIDE_SPEEX */
@@ -162,10 +162,17 @@
* @param out Output buffer
* @param out_len Size of the output buffer. Returns the number of samples written
*/
+#ifdef DOUBLE_PRECISION
+ int speex_resampler_process_float (SpeexResamplerState * st,
+ spx_uint32_t channel_index,
+ const double *in,
+ spx_uint32_t * in_len, double *out, spx_uint32_t * out_len);
+#else
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);
+#endif
/** Resample an int array. The input and output buffers must *not* overlap.
* @param st Resampler state
@@ -191,9 +198,15 @@
* @param out_len Size of the output buffer. Returns the number of samples written.
* This is all per-channel.
*/
+#ifdef DOUBLE_PRECISION
+ int speex_resampler_process_interleaved_float (SpeexResamplerState * st,
+ const double *in,
+ spx_uint32_t * in_len, double *out, spx_uint32_t * out_len);
+#else
int speex_resampler_process_interleaved_float (SpeexResamplerState * st,
const float *in,
spx_uint32_t * in_len, float *out, spx_uint32_t * out_len);
+#endif
/** Resample an interleaved int array. The input and output buffers must *not* overlap.
* @param st Resampler state
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