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add support for 24bit packed samples

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This commit is contained in:
Lennart Poettering 2009-01-16 03:15:39 +01:00
parent 9955398fda
commit 6dc76d1158
15 changed files with 370 additions and 32 deletions
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112
src/pulsecore/sconv-s16le.c
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@ -23,7 +23,7 @@
#include <config.h>
#endif
/* Despite the name of this file we implement S32 handling here, too. */
/* Despite the name of this file we implement S32 and S24 handling here, too. */
#include <inttypes.h>
#include <stdio.h>
@ -54,6 +54,14 @@
#define INT32_TO PA_INT32_TO_LE
#endif
#ifndef READ24
#define READ24 PA_READ24LE
#endif
#ifndef WRITE24
#define WRITE24 PA_WRITE24LE
#endif
#ifndef SWAP_WORDS
#ifdef WORDS_BIGENDIAN
#define SWAP_WORDS 1
@ -243,3 +251,105 @@ void pa_sconv_s32le_from_s16re(unsigned n, const int16_t *a, int32_t *b) {
b++;
}
}
void pa_sconv_s24le_to_s16ne(unsigned n, const uint8_t *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
*b = (int16_t) (READ24(a) >> 8);
a += 3;
b++;
}
}
void pa_sconv_s24le_from_s16ne(unsigned n, const int16_t *a, uint8_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
WRITE24(b, ((uint32_t) *a) << 8);
a++;
b += 3;
}
}
void pa_sconv_s24le_to_s16re(unsigned n, const uint8_t *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int16_t s = (int16_t) (READ24(a) >> 8);
*b = PA_INT16_SWAP(s);
a += 3;
b++;
}
}
void pa_sconv_s24le_from_s16re(unsigned n, const int16_t *a, uint8_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
uint32_t s = ((uint32_t) PA_INT16_SWAP(*a)) << 8;
WRITE24(b, s);
a++;
b += 3;
}
}
void pa_sconv_s24le_to_float32ne(unsigned n, const uint8_t *a, float *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s = READ24(a) << 8;
*b = ((float) s) / 0x7FFFFFFF;
a += 3;
b ++;
}
}
void pa_sconv_s24le_from_float32ne(unsigned n, const float *a, uint8_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s;
float v = *a;
v = PA_CLAMP_UNLIKELY(v, -1.0f, 1.0f);
s = (int32_t) lrint((double) v * (double) 0x7FFFFFFF);
WRITE24(b, ((uint32_t) s) >> 8);
a++;
b+=3;
}
}
void pa_sconv_s24le_to_float32re(unsigned n, const uint8_t *a, float *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s = READ24(a) << 8;
float k = ((float) s) / 0x7FFFFFFF;
*b = PA_FLOAT32_SWAP(k);
a += 3;
b ++;
}
}
void pa_sconv_s24le_from_float32re(unsigned n, const float *a, uint8_t *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int32_t s;
float v = *a;
v = PA_FLOAT32_SWAP(v);
v = PA_CLAMP_UNLIKELY(v, -1.0f, 1.0f);
s = (int32_t) lrint((double) v * (double) 0x7FFFFFFF);
WRITE24(b, ((uint32_t) s) >> 8);
a++;
b+=3;
}
}