mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-08 13:29:59 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

add support for 32bit integer samples

Browse source 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2037 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-11-09 02:45:07 +00:00
parent 3c17c7d442
commit 7e0f547f2f
12 changed files with 319 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

131
src/pulsecore/sconv-s16le.c
View file

@ -25,7 +25,10 @@
#include <config.h>
#endif
/* Despite the name of this file we implement S32 handling here, too. */
#include <inttypes.h>
#include <stdio.h>
#include <liboil/liboilfuncs.h>
@ -45,6 +48,14 @@
#define INT16_TO PA_INT16_TO_LE
#endif
#ifndef INT32_FROM
#define INT32_FROM PA_INT32_FROM_LE
#endif
#ifndef INT32_TO
#define INT32_TO PA_INT32_TO_LE
#endif
#ifndef SWAP_WORDS
#ifdef WORDS_BIGENDIAN
#define SWAP_WORDS 1
@ -72,6 +83,25 @@ void pa_sconv_s16le_to_float32ne(unsigned n, const int16_t *a, float *b) {
#endif
}
void pa_sconv_s32le_to_float32ne(unsigned n, const int32_t *a, float *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int32_t s = *(a++);
*(b++) = (float) (((double) INT32_FROM(s))/0x7FFFFFFF);
}
#else
{
static const double add = 0, factor = 1.0/0x7FFFFFFF;
oil_scaleconv_f32_s32(b, a, n, &add, &factor);
}
#endif
}
void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
@ -82,7 +112,7 @@ void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) {
int16_t s;
float v = *(a++);
v = CLAMP(v, -1, 1);
v = PA_CLAMP_UNLIKELY(v, -1, 1);
s = (int16_t) (v * 0x7FFF);
*(b++) = INT16_TO(s);
}
@ -95,6 +125,29 @@ void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) {
#endif
}
void pa_sconv_s32le_from_float32ne(unsigned n, const float *a, int32_t *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int32_t s;
float v = *(a++);
v = PA_CLAMP_UNLIKELY(v, -1, 1);
s = (int32_t) ((double) v * (double) 0x7FFFFFFF);
*(b++) = INT32_TO(s);
}
#else
{
static const double add = 0, factor = 0x7FFFFFFF;
oil_scaleconv_s32_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);
@ -108,6 +161,19 @@ void pa_sconv_s16le_to_float32re(unsigned n, const int16_t *a, float *b) {
}
}
void pa_sconv_s32le_to_float32re(unsigned n, const int32_t *a, float *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s = *(a++);
float k = (float) (((double) INT32_FROM(s))/0x7FFFFFFF);
uint32_t *j = (uint32_t*) &k;
*j = PA_UINT32_SWAP(*j);
*(b++) = k;
}
}
void pa_sconv_s16le_from_float32re(unsigned n, const float *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
@ -117,8 +183,69 @@ void pa_sconv_s16le_from_float32re(unsigned n, const float *a, int16_t *b) {
float v = *(a++);
uint32_t *j = (uint32_t*) &v;
*j = PA_UINT32_SWAP(*j);
v = CLAMP(v, -1, 1);
v = PA_CLAMP_UNLIKELY(v, -1, 1);
s = (int16_t) (v * 0x7FFF);
*(b++) = INT16_TO(s);
}
}
void pa_sconv_s32le_from_float32re(unsigned n, const float *a, int32_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s;
float v = *(a++);
uint32_t *j = (uint32_t*) &v;
*j = PA_UINT32_SWAP(*j);
v = PA_CLAMP_UNLIKELY(v, -1, 1);
s = (int32_t) ((double) v * 0x7FFFFFFF);
*(b++) = INT32_TO(s);
}
}
void pa_sconv_s32le_to_s16ne(unsigned n, const int32_t*a, int16_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
*b = (int16_t) (INT32_FROM(*a) >> 16);
a++;
b++;
}
}
void pa_sconv_s32le_to_s16re(unsigned n, const int32_t*a, int16_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int16_t s = (int16_t) (INT32_FROM(*a) >> 16);
*b = PA_UINT32_SWAP(s);
a++;
b++;
}
}
void pa_sconv_s32le_from_s16ne(unsigned n, const int16_t *a, int32_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
*b = INT32_TO(((int32_t) *a) << 16);
a++;
b++;
}
}
void pa_sconv_s32le_from_s16re(unsigned n, const int16_t *a, int32_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s = ((int32_t) PA_UINT16_SWAP(*a)) << 16;
*b = INT32_TO(s);
a++;
b++;
}
}