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
|
/*
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavresample/dither.h"
extern void ff_quantize_sse2(int16_t *dst, const float *src, float *dither,
int len);
extern void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
extern void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
extern void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
extern void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
enum AVResampleDitherMethod method)
{
int mm_flags = av_get_cpu_flags();
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->quantize = ff_quantize_sse2;
ddsp->ptr_align = 16;
ddsp->samples_align = 8;
}
if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
}
} else {
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
}
}
}
|
