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;******************************************************************************
;* Opus SIMD functions
;*
;* 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_RODATA
; 0.85..^1 0.85..^2 0.85..^3 0.85..^4
tab_st: dd 0x3f599a00, 0x3f38f671, 0x3f1d382a, 0x3f05a32f
tab_x0: dd 0x0, 0x3f599a00, 0x3f599a00, 0x3f599a00
tab_x1: dd 0x0, 0x0, 0x3f38f671, 0x3f38f671
tab_x2: dd 0x0, 0x0, 0x0, 0x3f1d382a
SECTION .text
INIT_XMM fma3
%if UNIX64
cglobal opus_deemphasis, 3, 3, 8, out, in, len
%else
cglobal opus_deemphasis, 4, 4, 8, out, in, coeff, len
%endif
%if ARCH_X86_32
VBROADCASTSS m0, coeffm
%else
%if WIN64
SWAP 0, 2
%endif
shufps m0, m0, 0
%endif
movaps m4, [tab_st]
movaps m5, [tab_x0]
movaps m6, [tab_x1]
movaps m7, [tab_x2]
.loop:
movaps m1, [inq] ; x0, x1, x2, x3
pslldq m2, m1, 4 ; 0, x0, x1, x2
pslldq m3, m1, 8 ; 0, 0, x0, x1
fmaddps m2, m2, m5, m1 ; x + c1*x[0-2]
pslldq m1, 12 ; 0, 0, 0, x0
fmaddps m2, m3, m6, m2 ; x + c1*x[0-2] + c2*x[0-1]
fmaddps m1, m1, m7, m2 ; x + c1*x[0-2] + c2*x[0-1] + c3*x[0]
fmaddps m0, m0, m4, m1 ; x + c1*x[0-2] + c2*x[0-1] + c3*x[0] + c*s
movaps [outq], m0
shufps m0, m0, q3333 ; new state
add inq, mmsize
add outq, mmsize
sub lenq, mmsize >> 2
jg .loop
%if ARCH_X86_64 == 0
movss r0m, m0
fld dword r0m
%endif
RET
INIT_XMM fma3
cglobal opus_postfilter, 4, 4, 8, data, period, gains, len
VBROADCASTSS m0, [gainsq + 0]
VBROADCASTSS m1, [gainsq + 4]
VBROADCASTSS m2, [gainsq + 8]
lea periodq, [periodq*4 + 8]
neg periodq
movups m3, [dataq + periodq]
mulps m3, m2
.loop:
movups m4, [dataq + periodq + 4]
movups m5, [dataq + periodq + 8]
movups m6, [dataq + periodq + 12]
movups m7, [dataq + periodq + 16]
fmaddps m3, m7, m2, m3
addps m6, m4
fmaddps m5, m5, m0, [dataq]
fmaddps m6, m6, m1, m3
addps m5, m6
mulps m3, m7, m2
movaps [dataq], m5
add dataq, mmsize
sub lenq, mmsize >> 2
jg .loop
RET
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