x86: check for AV_CPU_FLAG_AVXSLOW where useful
[libav.git] / libavresample / x86 / dither_init.c
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1/*
2 * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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 * Libav 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 Libav; 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
b6649ab5 26void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);
1fb8f6a4 27
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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);
a6a3164b 30
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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);
a6a3164b 33
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34av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
35 enum AVResampleDitherMethod method)
36{
3ac7fa81 37 int cpu_flags = av_get_cpu_flags();
1fb8f6a4 38
3ac7fa81 39 if (EXTERNAL_SSE2(cpu_flags)) {
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40 ddsp->quantize = ff_quantize_sse2;
41 ddsp->ptr_align = 16;
42 ddsp->samples_align = 8;
43 }
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44
45 if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
3ac7fa81 46 if (EXTERNAL_SSE2(cpu_flags)) {
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47 ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
48 }
d68c0538 49 if (EXTERNAL_AVX_FAST(cpu_flags)) {
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50 ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
51 }
52 } else {
3ac7fa81 53 if (EXTERNAL_SSE2(cpu_flags)) {
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54 ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
55 }
d68c0538 56 if (EXTERNAL_AVX_FAST(cpu_flags)) {
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57 ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
58 }
59 }
1fb8f6a4 60}