aboutsummaryrefslogtreecommitdiffstats
path: root/libavresample/x86/dither_init.c
blob: 2a351c5f0dac773b033f1d8f1a878bfca892916d (plain) (blame)
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
/*
 * 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"

void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);

void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);

void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
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 cpu_flags = av_get_cpu_flags();

    if (EXTERNAL_SSE2(cpu_flags)) {
        ddsp->quantize      = ff_quantize_sse2;
        ddsp->ptr_align     = 16;
        ddsp->samples_align = 8;
    }

    if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
        if (EXTERNAL_SSE2(cpu_flags)) {
            ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
        }
        if (EXTERNAL_AVX_FAST(cpu_flags)) {
            ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
        }
    } else {
        if (EXTERNAL_SSE2(cpu_flags)) {
            ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
        }
        if (EXTERNAL_AVX_FAST(cpu_flags)) {
            ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
        }
    }
}