mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-25 10:51:49 +02:00
![Michael Niedermayer](/assets/img/avatar_default.png)
Core I7 (Sandy Bridge) 135 to 107 cycles Core i5 (Arrandale) 162 to 142 (Thanks to Christophe Gisquet for testing) Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
181 lines
5.2 KiB
NASM
181 lines
5.2 KiB
NASM
;******************************************************************************
|
|
;* AAC Spectral Band Replication decoding functions
|
|
;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
|
|
;*
|
|
;* This file is part of Libav.
|
|
;*
|
|
;* Libav 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.
|
|
;*
|
|
;* Libav 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 Libav; 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
|
|
; mask equivalent for multiply by -1.0 1.0
|
|
ps_mask times 2 dd 1<<31, 0
|
|
|
|
SECTION_TEXT
|
|
|
|
INIT_XMM sse
|
|
cglobal sbr_sum_square, 2, 3, 6
|
|
mov r2, r1
|
|
xorps m0, m0
|
|
xorps m1, m1
|
|
sar r2, 3
|
|
jz .prepare
|
|
.loop:
|
|
movu m2, [r0 + 0]
|
|
movu m3, [r0 + 16]
|
|
movu m4, [r0 + 32]
|
|
movu m5, [r0 + 48]
|
|
mulps m2, m2
|
|
mulps m3, m3
|
|
mulps m4, m4
|
|
mulps m5, m5
|
|
addps m0, m2
|
|
addps m1, m3
|
|
addps m0, m4
|
|
addps m1, m5
|
|
add r0, 64
|
|
dec r2
|
|
jnz .loop
|
|
.prepare:
|
|
and r1, 7
|
|
sar r1, 1
|
|
jz .end
|
|
; len is a multiple of 2, thus there are at least 4 elements to process
|
|
.endloop:
|
|
movu m2, [r0]
|
|
add r0, 16
|
|
mulps m2, m2
|
|
dec r1
|
|
addps m0, m2
|
|
jnz .endloop
|
|
.end:
|
|
addps m0, m1
|
|
movhlps m2, m0
|
|
addps m0, m2
|
|
movss m1, m0
|
|
shufps m0, m0, 1
|
|
addss m0, m1
|
|
%if ARCH_X86_64 == 0
|
|
movss r0m, m0
|
|
fld dword r0m
|
|
%endif
|
|
RET
|
|
|
|
%define STEP 40*4*2
|
|
cglobal sbr_hf_g_filt, 5, 6, 5
|
|
lea r1, [r1 + 8*r4] ; offset by ixh elements into X_high
|
|
mov r5, r3
|
|
and r3, 0xFC
|
|
lea r2, [r2 + r3*4]
|
|
lea r0, [r0 + r3*8]
|
|
neg r3
|
|
jz .loop1
|
|
.loop4:
|
|
movlps m0, [r2 + 4*r3 + 0]
|
|
movlps m1, [r2 + 4*r3 + 8]
|
|
movlps m2, [r1 + 0*STEP]
|
|
movlps m3, [r1 + 2*STEP]
|
|
movhps m2, [r1 + 1*STEP]
|
|
movhps m3, [r1 + 3*STEP]
|
|
unpcklps m0, m0
|
|
unpcklps m1, m1
|
|
mulps m0, m2
|
|
mulps m1, m3
|
|
movu [r0 + 8*r3 + 0], m0
|
|
movu [r0 + 8*r3 + 16], m1
|
|
add r1, 4*STEP
|
|
add r3, 4
|
|
jnz .loop4
|
|
and r5, 3 ; number of single element loops
|
|
jz .end
|
|
.loop1: ; element 0 and 1 can be computed at the same time
|
|
movss m0, [r2]
|
|
movlps m2, [r1]
|
|
unpcklps m0, m0
|
|
mulps m2, m0
|
|
movlps [r0], m2
|
|
add r0, 8
|
|
add r2, 4
|
|
add r1, STEP
|
|
dec r5
|
|
jnz .loop1
|
|
.end:
|
|
RET
|
|
|
|
; static void sbr_hf_gen_c(float (*X_high)[2], const float (*X_low)[2],
|
|
; const float alpha0[2], const float alpha1[2],
|
|
; float bw, int start, int end)
|
|
;
|
|
cglobal sbr_hf_gen, 4,4,8, X_high, X_low, alpha0, alpha1, BW, S, E
|
|
; load alpha factors
|
|
%define bw m0
|
|
%if ARCH_X86_64 == 0 || WIN64
|
|
movss bw, BWm
|
|
%endif
|
|
movlps m2, [alpha1q]
|
|
movlps m1, [alpha0q]
|
|
shufps bw, bw, 0
|
|
mulps m2, bw ; (a1[0] a1[1])*bw
|
|
mulps m1, bw ; (a0[0] a0[1])*bw = (a2 a3)
|
|
mulps m2, bw ; (a1[0] a1[1])*bw*bw = (a0 a1)
|
|
mova m3, m1
|
|
mova m4, m2
|
|
|
|
; Set pointers
|
|
%if ARCH_X86_64 == 0 || WIN64
|
|
; start and end 6th and 7th args on stack
|
|
mov r2d, Sm
|
|
mov r3d, Em
|
|
%define start r2q
|
|
%define end r3q
|
|
%else
|
|
; BW does not actually occupy a register, so shift by 1
|
|
%define start BWq
|
|
%define end Sq
|
|
%endif
|
|
sub start, end ; neg num of loops
|
|
lea X_highq, [X_highq + end*2*4]
|
|
lea X_lowq, [X_lowq + end*2*4 - 2*2*4]
|
|
shl start, 3 ; offset from num loops
|
|
|
|
mova m0, [X_lowq + start]
|
|
shufps m3, m3, q1111
|
|
shufps m4, m4, q1111
|
|
xorps m3, [ps_mask]
|
|
shufps m1, m1, q0000
|
|
shufps m2, m2, q0000
|
|
xorps m4, [ps_mask]
|
|
.loop2:
|
|
movu m7, [X_lowq + start + 8] ; BbCc
|
|
mova m6, m0
|
|
mova m5, m7
|
|
shufps m0, m0, q2301 ; aAbB
|
|
shufps m7, m7, q2301 ; bBcC
|
|
mulps m0, m4
|
|
mulps m7, m3
|
|
mulps m6, m2
|
|
mulps m5, m1
|
|
addps m7, m0
|
|
mova m0, [X_lowq + start +16] ; CcDd
|
|
addps m7, m0
|
|
addps m6, m5
|
|
addps m7, m6
|
|
mova [X_highq + start], m7
|
|
add start, 16
|
|
jnz .loop2
|
|
RET
|