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Diffstat (limited to 'src/pulsecore/sconv.c')
| -rw-r--r-- | src/pulsecore/sconv.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/src/pulsecore/sconv.c b/src/pulsecore/sconv.c new file mode 100644 index 0000000..0781b6e --- /dev/null +++ b/src/pulsecore/sconv.c @@ -0,0 +1,296 @@ +/*** + 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 2.1 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, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> + +#include <pulsecore/g711.h> +#include <pulsecore/macro.h> +#include <pulsecore/endianmacros.h> + +#include <pulsecore/sconv-s16le.h> +#include <pulsecore/sconv-s16be.h> + +#include "sconv.h" + +/* u8 */ +static void u8_to_float32ne(unsigned n, const uint8_t *a, float *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--, a++, b++) + *b = (*a * 1.0/128.0) - 1.0; +} + +static void u8_from_float32ne(unsigned n, const float *a, uint8_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--, a++, b++) { + float v; + v = (*a * 127.0) + 128.0; + v = PA_CLAMP_UNLIKELY (v, 0.0, 255.0); + *b = rint (v); + } +} + +static void u8_to_s16ne(unsigned n, const uint8_t *a, int16_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--, a++, b++) + *b = (((int16_t)*a) - 128) << 8; +} + +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) ((uint16_t) *a >> 8) + (uint8_t) 0x80U; +} + +/* float32 */ + +static void float32ne_to_float32ne(unsigned n, const float *a, float *b) { + pa_assert(a); + pa_assert(b); + + memcpy(b, a, (int) (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); + + memcpy(b, a, (int) (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_INT16_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, -1.0f, 1.0f); + v *= 0x1FFF; + *(b++) = st_14linear2ulaw((int16_t) lrintf(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, -1.0f, 1.0f); + v *= 0xFFF; + *b = st_13linear2alaw((int16_t) lrintf(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((uint8_t) *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); +} + +static pa_convert_func_t to_float32ne_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_S24LE] = (pa_convert_func_t) pa_sconv_s24le_to_float32ne, + [PA_SAMPLE_S24BE] = (pa_convert_func_t) pa_sconv_s24be_to_float32ne, + [PA_SAMPLE_S24_32LE] = (pa_convert_func_t) pa_sconv_s24_32le_to_float32ne, + [PA_SAMPLE_S24_32BE] = (pa_convert_func_t) pa_sconv_s24_32be_to_float32ne, + [PA_SAMPLE_FLOAT32NE] = (pa_convert_func_t) float32ne_to_float32ne, + [PA_SAMPLE_FLOAT32RE] = (pa_convert_func_t) float32re_to_float32ne, +}; + +pa_convert_func_t pa_get_convert_to_float32ne_function(pa_sample_format_t f) { + pa_assert(pa_sample_format_valid(f)); + + return to_float32ne_table[f]; +} + +void pa_set_convert_to_float32ne_function(pa_sample_format_t f, pa_convert_func_t func) { + pa_assert(pa_sample_format_valid(f)); + + to_float32ne_table[f] = func; +} + +static pa_convert_func_t from_float32ne_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_S24LE] = (pa_convert_func_t) pa_sconv_s24le_from_float32ne, + [PA_SAMPLE_S24BE] = (pa_convert_func_t) pa_sconv_s24be_from_float32ne, + [PA_SAMPLE_S24_32LE] = (pa_convert_func_t) pa_sconv_s24_32le_from_float32ne, + [PA_SAMPLE_S24_32BE] = (pa_convert_func_t) pa_sconv_s24_32be_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_convert_func_t pa_get_convert_from_float32ne_function(pa_sample_format_t f) { + pa_assert(pa_sample_format_valid(f)); + + return from_float32ne_table[f]; +} + +void pa_set_convert_from_float32ne_function(pa_sample_format_t f, pa_convert_func_t func) { + pa_assert(pa_sample_format_valid(f)); + + from_float32ne_table[f] = func; +} + +static pa_convert_func_t to_s16ne_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_S24BE] = (pa_convert_func_t) pa_sconv_s24be_to_s16ne, + [PA_SAMPLE_S24LE] = (pa_convert_func_t) pa_sconv_s24le_to_s16ne, + [PA_SAMPLE_S24_32BE] = (pa_convert_func_t) pa_sconv_s24_32be_to_s16ne, + [PA_SAMPLE_S24_32LE] = (pa_convert_func_t) pa_sconv_s24_32le_to_s16ne, + [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_to_s16ne, + [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_to_s16ne +}; + +pa_convert_func_t pa_get_convert_to_s16ne_function(pa_sample_format_t f) { + pa_assert(pa_sample_format_valid(f)); + + return to_s16ne_table[f]; +} + +void pa_set_convert_to_s16ne_function(pa_sample_format_t f, pa_convert_func_t func) { + pa_assert(pa_sample_format_valid(f)); + + to_s16ne_table[f] = func; +} + +static pa_convert_func_t from_s16ne_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_S24BE] = (pa_convert_func_t) pa_sconv_s24be_from_s16ne, + [PA_SAMPLE_S24LE] = (pa_convert_func_t) pa_sconv_s24le_from_s16ne, + [PA_SAMPLE_S24_32BE] = (pa_convert_func_t) pa_sconv_s24_32be_from_s16ne, + [PA_SAMPLE_S24_32LE] = (pa_convert_func_t) pa_sconv_s24_32le_from_s16ne, + [PA_SAMPLE_ALAW] = (pa_convert_func_t) alaw_from_s16ne, + [PA_SAMPLE_ULAW] = (pa_convert_func_t) ulaw_from_s16ne, +}; + +pa_convert_func_t pa_get_convert_from_s16ne_function(pa_sample_format_t f) { + pa_assert(pa_sample_format_valid(f)); + + return from_s16ne_table[f]; +} + +void pa_set_convert_from_s16ne_function(pa_sample_format_t f, pa_convert_func_t func) { + pa_assert(pa_sample_format_valid(f)); + + from_s16ne_table[f] = func; +} |