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Justine Tunney 2020-06-15 07:18:57 -07:00
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dsp/core/sad16x8n.S Normal file
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/*-*- mode:asm; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program 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 │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.h"
.align 16
/ Mixes audio.
/
/ @param rdi is # aligned int16[16] sample chunks to process
/ @param rsi points to aligned pcm s16le input/output memory
/ @param rdx points to aligned pcm s16le [0..1] input memory
sad16x8n:
.leafprologue
.profilable
test %rdi,%rdi
jz 1f
shl $3,%rdi
0: sub $8,%rdi
movdqa (%rsi,%rdi,2),%xmm0
paddsw (%rdx,%rdi,2),%xmm0
movdqa %xmm0,(%rsi,%rdi,2)
jnz 0b
1: .leafepilogue
.endfn sad16x8n,globl,hidden
.yoink __FILE__