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/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <liboil/liboilfuncs.h>
#include <liboil/liboil.h>
#include <pulsecore/g711.h>
#include "endianmacros.h"
#include "sconv-s16le.h"
#include "sconv-s16be.h"
#include "sconv.h"
static void u8_to_float32ne(unsigned n, const void *a, float *b) {
const uint8_t *ca = a;
static const double add = -128.0/127.0, factor = 1.0/127.0;
assert(a);
assert(b);
oil_scaleconv_f32_u8(b, ca, n, &add, &factor);
}
static void u8_from_float32ne(unsigned n, const float *a, void *b) {
uint8_t *cb = b;
static const double add = 128.0, factor = 127.0;
assert(a);
assert(b);
oil_scaleconv_u8_f32(cb, a, n, &add, &factor);
}
static void float32ne_to_float32ne(unsigned n, const void *a, float *b) {
assert(a);
assert(b);
oil_memcpy(b, a, sizeof(float) * n);
}
static void float32ne_from_float32ne(unsigned n, const float *a, void *b) {
assert(a);
assert(b);
oil_memcpy(b, a, sizeof(float) * n);
}
static void float32re_to_float32ne(unsigned n, const void *a, float *b) {
assert(a);
assert(b);
while (n-- > 0)
((uint32_t *)b)[n] = UINT32_SWAP (((uint32_t *)a)[n]);
}
static void float32re_from_float32ne(unsigned n, const float *a, void *b) {
assert(a);
assert(b);
while (n-- > 0)
((uint32_t *)b)[n] = UINT32_SWAP (((uint32_t *)a)[n]);
}
static void ulaw_to_float32ne(unsigned n, const void *a, float *b) {
const uint8_t *ca = a;
assert(a);
assert(b);
for (; n > 0; n--)
*(b++) = st_ulaw2linear16(*(ca++)) * 1.0F / 0x7FFF;
}
static void ulaw_from_float32ne(unsigned n, const float *a, void *b) {
uint8_t *cb = b;
assert(a);
assert(b);
for (; n > 0; n--) {
float v = *(a++);
if (v > 1)
v = 1;
if (v < -1)
v = -1;
*(cb++) = st_14linear2ulaw((int16_t) (v * 0x1FFF));
}
}
static void alaw_to_float32ne(unsigned n, const void *a, float *b) {
const uint8_t *ca = a;
assert(a);
assert(b);
for (; n > 0; n--)
*(b++) = st_alaw2linear16(*(ca++)) * 1.0F / 0x7FFF;
}
static void alaw_from_float32ne(unsigned n, const float *a, void *b) {
uint8_t *cb = b;
assert(a);
assert(b);
for (; n > 0; n--) {
float v = *(a++);
if (v > 1)
v = 1;
if (v < -1)
v = -1;
*(cb++) = st_13linear2alaw((int16_t) (v * 0xFFF));
}
}
pa_convert_to_float32ne_func_t pa_get_convert_to_float32ne_function(pa_sample_format_t f) {
switch(f) {
case PA_SAMPLE_U8:
return u8_to_float32ne;
case PA_SAMPLE_S16LE:
return pa_sconv_s16le_to_float32ne;
case PA_SAMPLE_S16BE:
return pa_sconv_s16be_to_float32ne;
case PA_SAMPLE_FLOAT32NE:
return float32ne_to_float32ne;
case PA_SAMPLE_FLOAT32RE:
return float32re_to_float32ne;
case PA_SAMPLE_ALAW:
return alaw_to_float32ne;
case PA_SAMPLE_ULAW:
return ulaw_to_float32ne;
default:
return NULL;
}
}
pa_convert_from_float32ne_func_t pa_get_convert_from_float32ne_function(pa_sample_format_t f) {
switch(f) {
case PA_SAMPLE_U8:
return u8_from_float32ne;
case PA_SAMPLE_S16LE:
return pa_sconv_s16le_from_float32ne;
case PA_SAMPLE_S16BE:
return pa_sconv_s16be_from_float32ne;
case PA_SAMPLE_FLOAT32NE:
return float32ne_from_float32ne;
case PA_SAMPLE_FLOAT32RE:
return float32re_from_float32ne;
case PA_SAMPLE_ALAW:
return alaw_from_float32ne;
case PA_SAMPLE_ULAW:
return ulaw_from_float32ne;
default:
return NULL;
}
}
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