2 * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
4 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavresample/dither.h"
26 void ff_quantize_sse2(int16_t *dst
, const float *src
, float *dither
, int len
);
28 void ff_dither_int_to_float_rectangular_sse2(float *dst
, int *src
, int len
);
29 void ff_dither_int_to_float_rectangular_avx(float *dst
, int *src
, int len
);
31 void ff_dither_int_to_float_triangular_sse2(float *dst
, int *src0
, int len
);
32 void ff_dither_int_to_float_triangular_avx(float *dst
, int *src0
, int len
);
34 av_cold
void ff_dither_init_x86(DitherDSPContext
*ddsp
,
35 enum AVResampleDitherMethod method
)
37 int cpu_flags
= av_get_cpu_flags();
39 if (EXTERNAL_SSE2(cpu_flags
)) {
40 ddsp
->quantize
= ff_quantize_sse2
;
42 ddsp
->samples_align
= 8;
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
;
49 if (EXTERNAL_AVX(cpu_flags
)) {
50 ddsp
->dither_int_to_float
= ff_dither_int_to_float_rectangular_avx
;
53 if (EXTERNAL_SSE2(cpu_flags
)) {
54 ddsp
->dither_int_to_float
= ff_dither_int_to_float_triangular_sse2
;
56 if (EXTERNAL_AVX(cpu_flags
)) {
57 ddsp
->dither_int_to_float
= ff_dither_int_to_float_triangular_avx
;