yading@11: /*
yading@11:  * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "config.h"
yading@11: #include "libavutil/cpu.h"
yading@11: #include "libavutil/x86/cpu.h"
yading@11: #include "libavresample/dither.h"
yading@11: 
yading@11: void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, int len);
yading@11: 
yading@11: void ff_dither_int_to_float_rectangular_sse2(float *dst, int *src, int len);
yading@11: void ff_dither_int_to_float_rectangular_avx(float *dst, int *src, int len);
yading@11: 
yading@11: void ff_dither_int_to_float_triangular_sse2(float *dst, int *src0, int len);
yading@11: void ff_dither_int_to_float_triangular_avx(float *dst, int *src0, int len);
yading@11: 
yading@11: av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
yading@11:                                 enum AVResampleDitherMethod method)
yading@11: {
yading@11:     int mm_flags = av_get_cpu_flags();
yading@11: 
yading@11:     if (EXTERNAL_SSE2(mm_flags)) {
yading@11:         ddsp->quantize      = ff_quantize_sse2;
yading@11:         ddsp->ptr_align     = 16;
yading@11:         ddsp->samples_align = 8;
yading@11:     }
yading@11: 
yading@11:     if (method == AV_RESAMPLE_DITHER_RECTANGULAR) {
yading@11:         if (EXTERNAL_SSE2(mm_flags)) {
yading@11:             ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
yading@11:         }
yading@11:         if (EXTERNAL_AVX(mm_flags)) {
yading@11:             ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
yading@11:         }
yading@11:     } else {
yading@11:         if (EXTERNAL_SSE2(mm_flags)) {
yading@11:             ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
yading@11:         }
yading@11:         if (EXTERNAL_AVX(mm_flags)) {
yading@11:             ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
yading@11:         }
yading@11:     }
yading@11: }