1/*
2 * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "config.h"
22#include "libavutil/cpu.h"
23#include "libavutil/x86/cpu.h"
24#include "libavresample/dither.h"
25
26void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);
27
28void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
29void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
30
31void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
32void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
33
34av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
35                                enum AVResampleDitherMethod method)
36{
37    int cpu_flags = av_get_cpu_flags();
38
39    if (EXTERNAL_SSE2(cpu_flags)) {
40        ddsp->quantize      = ff_quantize_sse2;
41        ddsp->ptr_align     = 16;
42        ddsp->samples_align = 8;
43    }
44
45    if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
46        if (EXTERNAL_SSE2(cpu_flags)) {
47            ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
48        }
49        if (EXTERNAL_AVX(cpu_flags)) {
50            ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
51        }
52    } else {
53        if (EXTERNAL_SSE2(cpu_flags)) {
54            ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
55        }
56        if (EXTERNAL_AVX(cpu_flags)) {
57            ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
58        }
59    }
60}
61