4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include "endianmacros.h"
32 #include "sconv-s16le.h"
33 #include "sconv-s16be.h"
35 static void u8_to_float32(unsigned n, const void *a, unsigned an, float *b) {
37 const uint8_t *ca = a;
38 assert(n && a && an && b);
43 for (i = 0; i < an; i++) {
45 sum += (((float) v)-127)/127;
57 static void u8_from_float32(unsigned n, const float *a, void *b, unsigned bn) {
61 assert(n && a && b && bn);
72 u = (uint8_t) (v*127+127);
74 for (i = 0; i < bn; i++)
79 static void float32_to_float32(unsigned n, const void *a, unsigned an, float *b) {
82 assert(n && a && an && b);
86 for (i = 0; i < an; i++)
98 static void float32_from_float32(unsigned n, const float *a, void *b, unsigned bn) {
101 assert(n && a && b && bn);
104 for (i = 0; i < bn; i++)
109 pa_convert_to_float32_func_t pa_get_convert_to_float32_function(enum pa_sample_format f) {
112 return u8_to_float32;
113 case PA_SAMPLE_S16LE:
114 return pa_sconv_s16le_to_float32;
115 case PA_SAMPLE_S16BE:
116 return pa_sconv_s16be_to_float32;
117 case PA_SAMPLE_FLOAT32:
118 return float32_to_float32;
124 pa_convert_from_float32_func_t pa_get_convert_from_float32_function(enum pa_sample_format f) {
127 return u8_from_float32;
128 case PA_SAMPLE_S16LE:
129 return pa_sconv_s16le_from_float32;
130 case PA_SAMPLE_S16BE:
131 return pa_sconv_s16be_from_float32;
132 case PA_SAMPLE_FLOAT32:
133 return float32_from_float32;