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FFmpeg/libavresample/x86/dither_init.c
Michael Niedermayer 4765f63538 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  xan: Convert to bytestream2
  oggenc: add a page_duration option and deprecate the pagesize option
  x86: lavr: add SSE2/AVX dither_int_to_float()

Conflicts:
	libavcodec/xan.c
	libavformat/oggenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-09 12:30:14 +01:00

62 lines
2.3 KiB
C

/*
* 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"
extern void ff_quantize_sse2(int16_t *dst, const float *src, float *dither,
int len);
extern void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
extern void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
extern void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
extern 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 mm_flags = av_get_cpu_flags();
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->quantize = ff_quantize_sse2;
ddsp->ptr_align = 16;
ddsp->samples_align = 8;
}
if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
}
} else {
if (EXTERNAL_SSE2(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
}
}
}