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big resampler rework: support integer-only resampling, support speex resampler

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1712 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-08-23 22:35:40 +00:00
parent 4eb9bb0746
commit ed4dc16b95
8 changed files with 723 additions and 442 deletions
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68
src/pulsecore/sconv-s16le.c
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@ -25,12 +25,12 @@
#include <config.h>
#endif
#include <assert.h>
#include <inttypes.h>
#include <liboil/liboilfuncs.h>
#include <pulsecore/sconv.h>
#include <pulsecore/macro.h>
#include <pulsecore/log.h>
#include "endianmacros.h"
@ -53,32 +53,28 @@
#endif
#endif
void pa_sconv_s16le_to_float32ne(unsigned n, const void *a, float *b) {
const int16_t *ca = a;
assert(a);
assert(b);
void pa_sconv_s16le_to_float32ne(unsigned n, const int16_t *a, float *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int16_t s = *(ca++);
int16_t s = *(a++);
*(b++) = ((float) INT16_FROM(s))/0x7FFF;
}
#else
{
static const double add = 0, factor = 1.0/0x7FFF;
oil_scaleconv_f32_s16(b, ca, n, &add, &factor);
oil_scaleconv_f32_s16(b, a, n, &add, &factor);
}
#endif
}
void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, void *b) {
int16_t *cb = b;
assert(a);
assert(b);
void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
@ -93,13 +89,55 @@ void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, void *b) {
v = -1;
s = (int16_t) (v * 0x7FFF);
*(cb++) = INT16_TO(s);
*(b++) = INT16_TO(s);
}
#else
{
static const double add = 0, factor = 0x7FFF;
oil_scaleconv_s16_f32(cb, a, n, &add, &factor);
oil_scaleconv_s16_f32(b, a, n, &add, &factor);
}
#endif
}
void pa_sconv_s16le_to_float32re(unsigned n, const int16_t *a, float *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int16_t s = *(a++);
float k = ((float) INT16_FROM(s))/0x7FFF;
uint32_t *j = (uint32_t*) &k;
*j = UINT32_SWAP(*j);
*(b++) = k;
}
#endif
}
void pa_sconv_s16le_from_float32re(unsigned n, const float *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int16_t s;
float v = *(a++);
uint32_t *j = (uint32_t*) &v;
*j = UINT32_SWAP(*j);
if (v > 1)
v = 1;
if (v < -1)
v = -1;
s = (int16_t) (v * 0x7FFF);
*(b++) = INT16_TO(s);
}
#endif
}