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-rw-r--r--src/pulsecore/sconv.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/src/pulsecore/sconv.c b/src/pulsecore/sconv.c
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+++ b/src/pulsecore/sconv.c
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+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+ 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 <liboil/liboilfuncs.h>
+#include <liboil/liboil.h>
+
+#include <pulsecore/g711.h>
+#include <pulsecore/macro.h>
+
+#include "endianmacros.h"
+#include "sconv-s16le.h"
+#include "sconv-s16be.h"
+
+#include "sconv.h"
+
+/* u8 */
+static void u8_to_float32ne(unsigned n, const uint8_t *a, float *b) {
+ static const double add = -1, factor = 1.0/128.0;
+
+ pa_assert(a);
+ pa_assert(b);
+
+ oil_scaleconv_f32_u8(b, a, n, &add, &factor);
+}
+
+static void u8_from_float32ne(unsigned n, const float *a, uint8_t *b) {
+ static const double add = 128, factor = 127.0;
+
+ pa_assert(a);
+ pa_assert(b);
+
+ oil_scaleconv_u8_f32(b, a, n, &add, &factor);
+}
+
+static void u8_to_s16ne(unsigned n, const uint8_t *a, int16_t *b) {
+ static const int16_t add = -0x80, factor = 0x100;
+
+ pa_assert(a);
+ pa_assert(b);
+
+ oil_conv_s16_u8(b, 2, a, 1, n);
+ oil_scalaradd_s16(b, 2, b, 2, &add, n);
+ oil_scalarmult_s16(b, 2, b, 2, &factor, n);
+}
+
+static void u8_from_s16ne(unsigned n, const int16_t *a, uint8_t *b) {
+
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = (uint8_t) (*a / 0x100 + 0x80);
+}
+
+/* float32 */
+
+static void float32ne_to_float32ne(unsigned n, const float *a, float *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ oil_memcpy(b, a, sizeof(float) * n);
+}
+
+static void float32re_to_float32ne(unsigned n, const float *a, float *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *((uint32_t *) b) = PA_UINT32_SWAP(*((uint32_t *) a));
+}
+
+/* s16 */
+
+static void s16ne_to_s16ne(unsigned n, const int16_t *a, int16_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ oil_memcpy(b, a, sizeof(int16_t) * n);
+}
+
+static void s16re_to_s16ne(unsigned n, const int16_t *a, int16_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = PA_UINT16_SWAP(*a);
+}
+
+/* ulaw */
+
+static void ulaw_to_float32ne(unsigned n, const uint8_t *a, float *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--)
+ *(b++) = (float) st_ulaw2linear16(*(a++)) / 0x8000;
+}
+
+static void ulaw_from_float32ne(unsigned n, const float *a, uint8_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--) {
+ float v = *(a++);
+ v = PA_CLAMP_UNLIKELY(v, -1, 1);
+ v *= 0x1FFF;
+ *(b++) = st_14linear2ulaw((int16_t) v);
+ }
+}
+
+static void ulaw_to_s16ne(unsigned n, const uint8_t *a, int16_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = st_ulaw2linear16(*a);
+}
+
+static void ulaw_from_s16ne(unsigned n, const int16_t *a, uint8_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = st_14linear2ulaw(*a >> 2);
+}
+
+/* alaw */
+
+static void alaw_to_float32ne(unsigned n, const uint8_t *a, float *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = (float) st_alaw2linear16(*a) / 0x8000;
+}
+
+static void alaw_from_float32ne(unsigned n, const float *a, uint8_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++) {
+ float v = *a;
+ v = PA_CLAMP_UNLIKELY(v, -1, 1);
+ v *= 0xFFF;
+ *b = st_13linear2alaw((int16_t) v);
+ }
+}
+
+static void alaw_to_s16ne(unsigned n, const int8_t *a, int16_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = st_alaw2linear16(*a);
+}
+
+static void alaw_from_s16ne(unsigned n, const int16_t *a, uint8_t *b) {
+ pa_assert(a);
+ pa_assert(b);
+
+ for (; n > 0; n--, a++, b++)
+ *b = st_13linear2alaw(*a >> 3);
+}
+
+pa_convert_func_t pa_get_convert_to_float32ne_function(pa_sample_format_t f) {
+
+ static const pa_convert_func_t table[] = {
+ [PA_SAMPLE_U8] = (pa_convert_func_t) u8_to_float32ne,
+ [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_to_float32ne,
+ [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_to_float32ne,
+ [PA_SAMPLE_S16LE] = (pa_convert_func_t) pa_sconv_s16le_to_float32ne,
+ [PA_SAMPLE_S16BE] = (pa_convert_func_t) pa_sconv_s16be_to_float32ne,
+ [PA_SAMPLE_S32LE] = (pa_convert_func_t) pa_sconv_s32le_to_float32ne,
+ [PA_SAMPLE_S32BE] = (pa_convert_func_t) pa_sconv_s32be_to_float32ne,
+ [PA_SAMPLE_FLOAT32NE] = (pa_convert_func_t) float32ne_to_float32ne,
+ [PA_SAMPLE_FLOAT32RE] = (pa_convert_func_t) float32re_to_float32ne,
+ };
+
+ pa_assert(f >= 0);
+ pa_assert(f < PA_SAMPLE_MAX);
+
+ return table[f];
+}
+
+pa_convert_func_t pa_get_convert_from_float32ne_function(pa_sample_format_t f) {
+
+ static const pa_convert_func_t table[] = {
+ [PA_SAMPLE_U8] = (pa_convert_func_t) u8_from_float32ne,
+ [PA_SAMPLE_S16LE] = (pa_convert_func_t) pa_sconv_s16le_from_float32ne,
+ [PA_SAMPLE_S16BE] = (pa_convert_func_t) pa_sconv_s16be_from_float32ne,
+ [PA_SAMPLE_S32LE] = (pa_convert_func_t) pa_sconv_s32le_from_float32ne,
+ [PA_SAMPLE_S32BE] = (pa_convert_func_t) pa_sconv_s32be_from_float32ne,
+ [PA_SAMPLE_FLOAT32NE] = (pa_convert_func_t) float32ne_to_float32ne,
+ [PA_SAMPLE_FLOAT32RE] = (pa_convert_func_t) float32re_to_float32ne,
+ [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_from_float32ne,
+ [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_from_float32ne
+ };
+
+ pa_assert(f >= 0);
+ pa_assert(f < PA_SAMPLE_MAX);
+
+ return table[f];
+}
+
+pa_convert_func_t pa_get_convert_to_s16ne_function(pa_sample_format_t f) {
+
+ static const pa_convert_func_t table[] = {
+ [PA_SAMPLE_U8] = (pa_convert_func_t) u8_to_s16ne,
+ [PA_SAMPLE_S16NE] = (pa_convert_func_t) s16ne_to_s16ne,
+ [PA_SAMPLE_S16RE] = (pa_convert_func_t) s16re_to_s16ne,
+ [PA_SAMPLE_FLOAT32BE] = (pa_convert_func_t) pa_sconv_float32be_to_s16ne,
+ [PA_SAMPLE_FLOAT32LE] = (pa_convert_func_t) pa_sconv_float32le_to_s16ne,
+ [PA_SAMPLE_S32BE] = (pa_convert_func_t) pa_sconv_s32be_to_s16ne,
+ [PA_SAMPLE_S32LE] = (pa_convert_func_t) pa_sconv_s32le_to_s16ne,
+ [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_to_s16ne,
+ [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_to_s16ne
+ };
+
+ pa_assert(f >= 0);
+ pa_assert(f < PA_SAMPLE_MAX);
+
+ return table[f];
+}
+
+pa_convert_func_t pa_get_convert_from_s16ne_function(pa_sample_format_t f) {
+
+ static const pa_convert_func_t table[] = {
+ [PA_SAMPLE_U8] = (pa_convert_func_t) u8_from_s16ne,
+ [PA_SAMPLE_S16NE] = (pa_convert_func_t) s16ne_to_s16ne,
+ [PA_SAMPLE_S16RE] = (pa_convert_func_t) s16re_to_s16ne,
+ [PA_SAMPLE_FLOAT32BE] = (pa_convert_func_t) pa_sconv_float32be_from_s16ne,
+ [PA_SAMPLE_FLOAT32LE] = (pa_convert_func_t) pa_sconv_float32le_from_s16ne,
+ [PA_SAMPLE_S32BE] = (pa_convert_func_t) pa_sconv_s32be_from_s16ne,
+ [PA_SAMPLE_S32LE] = (pa_convert_func_t) pa_sconv_s32le_from_s16ne,
+ [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_from_s16ne,
+ [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_from_s16ne,
+ };
+
+ pa_assert(f >= 0);
+ pa_assert(f < PA_SAMPLE_MAX);
+
+ return table[f];
+}
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