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;******************************************************************************
;* ALAC DSP SIMD optimizations
;*
;* Copyright (C) 2015 James Almer
;*
;* 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 "libavutil/x86/x86util.asm"
SECTION .text
INIT_XMM sse4
%if ARCH_X86_64
cglobal alac_decorrelate_stereo, 2, 5, 8, buf0, len, shift, weight, buf1
%else
cglobal alac_decorrelate_stereo, 2, 3, 8, buf0, len, shift, weight
%define buf1q r2q
%endif
movd m6, shiftm
movd m7, weightm
SPLATD m7
shl lend, 2
mov buf1q, [buf0q + gprsize]
mov buf0q, [buf0q]
add buf1q, lenq
add buf0q, lenq
neg lenq
align 16
.loop:
mova m0, [buf0q + lenq]
mova m1, [buf0q + lenq + mmsize]
mova m2, [buf1q + lenq]
mova m3, [buf1q + lenq + mmsize]
pmulld m4, m2, m7
pmulld m5, m3, m7
psrad m4, m6
psrad m5, m6
psubd m0, m4
psubd m1, m5
paddd m2, m0
paddd m3, m1
mova [buf1q + lenq], m0
mova [buf1q + lenq + mmsize], m1
mova [buf0q + lenq], m2
mova [buf0q + lenq + mmsize], m3
add lenq, mmsize*2
jl .loop
RET
INIT_XMM sse2
cglobal alac_append_extra_bits_stereo, 2, 5, 5, buf0, exbuf0, buf1, exbuf1, len
movifnidn lend, lenm
movd m4, r2m ; exbits
shl lend, 2
mov buf1q, [buf0q + gprsize]
mov buf0q, [buf0q]
mov exbuf1q, [exbuf0q + gprsize]
mov exbuf0q, [exbuf0q]
add buf1q, lenq
add buf0q, lenq
add exbuf1q, lenq
add exbuf0q, lenq
neg lenq
align 16
.loop:
mova m0, [buf0q + lenq]
mova m1, [buf0q + lenq + mmsize]
pslld m0, m4
pslld m1, m4
mova m2, [buf1q + lenq]
mova m3, [buf1q + lenq + mmsize]
pslld m2, m4
pslld m3, m4
por m0, [exbuf0q + lenq]
por m1, [exbuf0q + lenq + mmsize]
por m2, [exbuf1q + lenq]
por m3, [exbuf1q + lenq + mmsize]
mova [buf0q + lenq ], m0
mova [buf0q + lenq + mmsize], m1
mova [buf1q + lenq ], m2
mova [buf1q + lenq + mmsize], m3
add lenq, mmsize*2
jl .loop
REP_RET
%if ARCH_X86_64
cglobal alac_append_extra_bits_mono, 2, 5, 3, buf, exbuf, exbits, ch, len
%else
cglobal alac_append_extra_bits_mono, 2, 3, 3, buf, exbuf, len
%define exbitsm r2m
%endif
movifnidn lend, r4m
movd m2, exbitsm
shl lend, 2
mov bufq, [bufq]
mov exbufq, [exbufq]
add bufq, lenq
add exbufq, lenq
neg lenq
align 16
.loop:
mova m0, [bufq + lenq]
mova m1, [bufq + lenq + mmsize]
pslld m0, m2
pslld m1, m2
por m0, [exbufq + lenq]
por m1, [exbufq + lenq + mmsize]
mova [bufq + lenq], m0
mova [bufq + lenq + mmsize], m1
add lenq, mmsize*2
jl .loop
REP_RET
|
