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
|
/* Spa
*
* Copyright © 2018 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "fmt-ops.h"
#include <smmintrin.h>
static void
conv_s24_to_f32d_1s_sse41(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
uint32_t n_channels, uint32_t n_samples)
{
const int24_t *s = src;
float *d0 = dst[0];
uint32_t n, unrolled;
__m128i in = _mm_setzero_si128();
__m128 out, factor = _mm_set1_ps(1.0f / S24_SCALE);
if (SPA_IS_ALIGNED(d0, 16))
unrolled = n_samples & ~3;
else
unrolled = 0;
for(n = 0; n < unrolled; n += 4) {
in = _mm_insert_epi32(in, *((uint32_t*)&s[0 * n_channels]), 0);
in = _mm_insert_epi32(in, *((uint32_t*)&s[1 * n_channels]), 1);
in = _mm_insert_epi32(in, *((uint32_t*)&s[2 * n_channels]), 2);
in = _mm_insert_epi32(in, *((uint32_t*)&s[3 * n_channels]), 3);
in = _mm_slli_epi32(in, 8);
in = _mm_srai_epi32(in, 8);
out = _mm_cvtepi32_ps(in);
out = _mm_mul_ps(out, factor);
_mm_store_ps(&d0[n], out);
s += 4 * n_channels;
}
for(; n < n_samples; n++) {
out = _mm_cvtsi32_ss(factor, s24_to_s32(*s));
out = _mm_mul_ss(out, factor);
_mm_store_ss(&d0[n], out);
s += n_channels;
}
}
extern void conv_s24_to_f32d_2s_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
uint32_t n_channels, uint32_t n_samples);
extern void conv_s24_to_f32d_4s_ssse3(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
uint32_t n_channels, uint32_t n_samples);
void
conv_s24_to_f32d_sse41(struct convert *conv, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
uint32_t n_samples)
{
const int8_t *s = src[0];
uint32_t i = 0, n_channels = conv->n_channels;
#if defined (HAVE_SSSE3)
for(; i + 3 < n_channels; i += 4)
conv_s24_to_f32d_4s_ssse3(conv, &dst[i], &s[3*i], n_channels, n_samples);
#endif
#if defined (HAVE_SSE2)
for(; i + 1 < n_channels; i += 2)
conv_s24_to_f32d_2s_sse2(conv, &dst[i], &s[3*i], n_channels, n_samples);
#endif
for(; i < n_channels; i++)
conv_s24_to_f32d_1s_sse41(conv, &dst[i], &s[3*i], n_channels, n_samples);
}
|
