61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
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/*
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* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavresample/dither.h"
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void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);
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void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
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void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
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void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
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void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
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av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
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enum AVResampleDitherMethod method)
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{
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_SSE2(cpu_flags)) {
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ddsp->quantize = ff_quantize_sse2;
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ddsp->ptr_align = 16;
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ddsp->samples_align = 8;
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}
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if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
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if (EXTERNAL_SSE2(cpu_flags)) {
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ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
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}
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if (EXTERNAL_AVX_FAST(cpu_flags)) {
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ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
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}
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} else {
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if (EXTERNAL_SSE2(cpu_flags)) {
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ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
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}
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if (EXTERNAL_AVX_FAST(cpu_flags)) {
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ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
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}
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}
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}
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