1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
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
/* Despite the name of this file we implement S32 handling here, too. */
#include <inttypes.h>
#include <stdio.h>
#include <liboil/liboilfuncs.h>
#include <pulsecore/sconv.h>
#include <pulsecore/macro.h>
#include <pulsecore/log.h>
#include "endianmacros.h"
#include "sconv-s16le.h"
#ifndef INT16_FROM
#define INT16_FROM PA_INT16_FROM_LE
#endif
#ifndef INT16_TO
#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
#else
#define SWAP_WORDS 0
#endif
#endif
void pa_sconv_s16le_to_float32ne(unsigned n, const int16_t *a, float *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int16_t s = *(a++);
*(b++) = ((float) INT16_FROM(s))/(float) 0x7FFF;
}
#else
{
static const double add = 0, factor = 1.0/0x7FFF;
oil_scaleconv_f32_s16(b, a, (int) n, &add, &factor);
}
#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, (int) n, &add, &factor);
}
#endif
}
void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) {
pa_assert(a);
pa_assert(b);
#if SWAP_WORDS == 1
for (; n > 0; n--) {
int16_t s;
float v = *(a++);
v = PA_CLAMP_UNLIKELY(v, -1.0f, 1.f);
s = (int16_t) (v * 0x7FFF);
*(b++) = INT16_TO(s);
}
#else
{
static const double add = 0, factor = 0x7FFF;
oil_scaleconv_s16_f32(b, a, (int) n, &add, &factor);
}
#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, -1.0f, 1.0f);
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, (int) n, &add, &factor);
}
#endif
}
void pa_sconv_s16le_to_float32re(unsigned n, const int16_t *a, float *b) {
pa_assert(a);
pa_assert(b);
for (; n > 0; n--) {
int16_t s = *(a++);
float k = ((float) INT16_FROM(s))/0x7FFF;
uint32_t *j = (uint32_t*) &k;
*j = PA_UINT32_SWAP(*j);
*(b++) = k;
}
}
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);
for (; n > 0; n--) {
int16_t s;
float v = *(a++);
uint32_t *j = (uint32_t*) &v;
*j = PA_UINT32_SWAP(*j);
v = PA_CLAMP_UNLIKELY(v, -1.0f, 1.0f);
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, -1.0f, 1.0f);
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_INT16_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_INT16_SWAP(*a)) << 16;
*b = INT32_TO(s);
a++;
b++;
}
}
|
