aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavresample/dither.h"
void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);
void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
enum AVResampleDitherMethod method)
{
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_SSE2(cpu_flags)) {
ddsp->quantize = ff_quantize_sse2;
ddsp->ptr_align = 16;
ddsp->samples_align = 8;
}
if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
if (EXTERNAL_SSE2(cpu_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
}
if (EXTERNAL_AVX_FAST(cpu_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
}
} else {
if (EXTERNAL_SSE2(cpu_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
}
if (EXTERNAL_AVX_FAST(cpu_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
}
}
}
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