52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
|
/*
|
||
|
|
* Bluetooth low-complexity, subband codec (SBC)
|
||
|
|
*
|
||
|
|
* Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org>
|
||
|
|
* Copyright (C) 2008-2010 Nokia Corporation
|
||
|
|
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
|
||
|
|
* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
|
||
|
|
* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.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
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* SBC MMX optimization for some basic "building bricks"
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "libavutil/cpu.h"
|
||
|
|
#include "libavutil/x86/cpu.h"
|
||
|
|
#include "libavcodec/sbcdsp.h"
|
||
|
|
|
||
|
|
void ff_sbc_analyze_4_mmx(const int16_t *in, int32_t *out, const int16_t *consts);
|
||
|
|
void ff_sbc_analyze_8_mmx(const int16_t *in, int32_t *out, const int16_t *consts);
|
||
|
|
void ff_sbc_calc_scalefactors_mmx(int32_t sb_sample_f[16][2][8],
|
||
|
|
uint32_t scale_factor[2][8],
|
||
|
|
int blocks, int channels, int subbands);
|
||
|
|
|
||
|
|
av_cold void ff_sbcdsp_init_x86(SBCDSPContext *s)
|
||
|
|
{
|
||
|
|
int cpu_flags = av_get_cpu_flags();
|
||
|
|
|
||
|
|
if (EXTERNAL_MMX(cpu_flags)) {
|
||
|
|
s->sbc_analyze_4 = ff_sbc_analyze_4_mmx;
|
||
|
|
s->sbc_analyze_8 = ff_sbc_analyze_8_mmx;
|
||
|
|
s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_mmx;
|
||
|
|
}
|
||
|
|
}
|