x86: lavr: add SSE2/AVX dither_int_to_float()
[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
26extern void ff_quantize_sse2(int16_t *dst, const float *src, float *dither,
27 int len);
28
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29extern void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
30extern void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
31
32extern void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
33extern void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
34
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35av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
36 enum AVResampleDitherMethod method)
37{
38 int mm_flags = av_get_cpu_flags();
39
40 if (EXTERNAL_SSE2(mm_flags)) {
41 ddsp->quantize = ff_quantize_sse2;
42 ddsp->ptr_align = 16;
43 ddsp->samples_align = 8;
44 }
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45
46 if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
47 if (EXTERNAL_SSE2(mm_flags)) {
48 ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
49 }
50 if (EXTERNAL_AVX(mm_flags)) {
51 ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
52 }
53 } else {
54 if (EXTERNAL_SSE2(mm_flags)) {
55 ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
56 }
57 if (EXTERNAL_AVX(mm_flags)) {
58 ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
59 }
60 }
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