mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
47d57f24e3
Reviewed-by: Kostya Shishkov Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
494 lines
16 KiB
ArmAsm
494 lines
16 KiB
ArmAsm
/*
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* Copyright (c) 2013 RISC OS Open Ltd
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* Author: Ben Avison <bavison@riscosopen.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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POUT .req a1
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PIN .req a2
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PCOEF .req a3
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DECIFACTOR .req a4
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OLDFPSCR .req a4
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COUNTER .req ip
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SCALE32 .req s28 @ use vector of 4 in place of 9th scalar when decifactor=32 / JMAX=8
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SCALE64 .req s0 @ spare register in scalar bank when decifactor=64 / JMAX=4
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IN0 .req s4
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IN1 .req s5
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IN2 .req s6
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IN3 .req s7
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IN4 .req s0
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IN5 .req s1
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IN6 .req s2
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IN7 .req s3
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COEF0 .req s8 @ coefficient elements
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COEF1 .req s9
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COEF2 .req s10
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COEF3 .req s11
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COEF4 .req s12
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COEF5 .req s13
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COEF6 .req s14
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COEF7 .req s15
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ACCUM0 .req s16 @ double-buffered multiply-accumulate results
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ACCUM4 .req s20
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POST0 .req s24 @ do long-latency post-multiply in this vector in parallel
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POST1 .req s25
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POST2 .req s26
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POST3 .req s27
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.macro inner_loop decifactor, dir, tail, head
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.ifc "\dir","up"
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.set X, 0
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.set Y, 4
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.else
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.set X, 4*JMAX*4 - 4
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.set Y, -4
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.endif
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.ifnc "\head",""
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vldr COEF0, [PCOEF, #X + (0*JMAX + 0) * Y]
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vldr COEF1, [PCOEF, #X + (1*JMAX + 0) * Y]
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vldr COEF2, [PCOEF, #X + (2*JMAX + 0) * Y]
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vldr COEF3, [PCOEF, #X + (3*JMAX + 0) * Y]
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.endif
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.ifnc "\tail",""
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vadd.f POST0, ACCUM0, ACCUM4 @ vector operation
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.endif
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.ifnc "\head",""
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vmul.f ACCUM0, COEF0, IN0 @ vector = vector * scalar
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vldr COEF4, [PCOEF, #X + (0*JMAX + 1) * Y]
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vldr COEF5, [PCOEF, #X + (1*JMAX + 1) * Y]
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vldr COEF6, [PCOEF, #X + (2*JMAX + 1) * Y]
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.endif
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.ifnc "\tail",""
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vmul.f POST0, POST0, SCALE\decifactor @ vector operation (SCALE may be scalar)
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.endif
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.ifnc "\head",""
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vldr COEF7, [PCOEF, #X + (3*JMAX + 1) * Y]
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.ifc "\tail",""
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vmul.f ACCUM4, COEF4, IN1 @ vector operation
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.endif
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vldr COEF0, [PCOEF, #X + (0*JMAX + 2) * Y]
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vldr COEF1, [PCOEF, #X + (1*JMAX + 2) * Y]
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.ifnc "\tail",""
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vmul.f ACCUM4, COEF4, IN1 @ vector operation
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.endif
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vldr COEF2, [PCOEF, #X + (2*JMAX + 2) * Y]
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vldr COEF3, [PCOEF, #X + (3*JMAX + 2) * Y]
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.endif
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.ifnc "\tail",""
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vstmia POUT!, {POST0-POST3}
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.endif
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.ifnc "\head",""
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vmla.f ACCUM0, COEF0, IN2 @ vector = vector * scalar
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vldr COEF4, [PCOEF, #X + (0*JMAX + 3) * Y]
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vldr COEF5, [PCOEF, #X + (1*JMAX + 3) * Y]
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vldr COEF6, [PCOEF, #X + (2*JMAX + 3) * Y]
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vldr COEF7, [PCOEF, #X + (3*JMAX + 3) * Y]
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vmla.f ACCUM4, COEF4, IN3 @ vector = vector * scalar
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.if \decifactor == 32
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vldr COEF0, [PCOEF, #X + (0*JMAX + 4) * Y]
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vldr COEF1, [PCOEF, #X + (1*JMAX + 4) * Y]
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vldr COEF2, [PCOEF, #X + (2*JMAX + 4) * Y]
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vldr COEF3, [PCOEF, #X + (3*JMAX + 4) * Y]
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vmla.f ACCUM0, COEF0, IN4 @ vector = vector * scalar
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vldr COEF4, [PCOEF, #X + (0*JMAX + 5) * Y]
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vldr COEF5, [PCOEF, #X + (1*JMAX + 5) * Y]
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vldr COEF6, [PCOEF, #X + (2*JMAX + 5) * Y]
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vldr COEF7, [PCOEF, #X + (3*JMAX + 5) * Y]
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vmla.f ACCUM4, COEF4, IN5 @ vector = vector * scalar
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vldr COEF0, [PCOEF, #X + (0*JMAX + 6) * Y]
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vldr COEF1, [PCOEF, #X + (1*JMAX + 6) * Y]
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vldr COEF2, [PCOEF, #X + (2*JMAX + 6) * Y]
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vldr COEF3, [PCOEF, #X + (3*JMAX + 6) * Y]
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vmla.f ACCUM0, COEF0, IN6 @ vector = vector * scalar
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vldr COEF4, [PCOEF, #X + (0*JMAX + 7) * Y]
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vldr COEF5, [PCOEF, #X + (1*JMAX + 7) * Y]
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vldr COEF6, [PCOEF, #X + (2*JMAX + 7) * Y]
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vldr COEF7, [PCOEF, #X + (3*JMAX + 7) * Y]
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vmla.f ACCUM4, COEF4, IN7 @ vector = vector * scalar
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.endif
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.endif
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.endm
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.macro dca_lfe_fir decifactor
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.if \decifactor == 32
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.set JMAX, 8
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vpush {s16-s31}
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vmov SCALE32, s0 @ duplicate scalar across vector
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vldr IN4, [PIN, #-4*4]
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vldr IN5, [PIN, #-5*4]
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vldr IN6, [PIN, #-6*4]
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vldr IN7, [PIN, #-7*4]
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.else
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.set JMAX, 4
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vpush {s16-s27}
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.endif
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mov COUNTER, #\decifactor/4 - 1
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inner_loop \decifactor, up,, head
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1: add PCOEF, PCOEF, #4*JMAX*4
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subs COUNTER, COUNTER, #1
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inner_loop \decifactor, up, tail, head
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bne 1b
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inner_loop \decifactor, up, tail
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mov COUNTER, #\decifactor/4 - 1
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inner_loop \decifactor, down,, head
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1: sub PCOEF, PCOEF, #4*JMAX*4
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subs COUNTER, COUNTER, #1
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inner_loop \decifactor, down, tail, head
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bne 1b
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inner_loop \decifactor, down, tail
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.if \decifactor == 32
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vpop {s16-s31}
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.else
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vpop {s16-s27}
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.endif
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fmxr FPSCR, OLDFPSCR
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bx lr
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.endm
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/* void ff_dca_lfe_fir_vfp(float *out, const float *in, const float *coefs,
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* int decifactor, float scale)
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*/
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function ff_dca_lfe_fir_vfp, export=1
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teq DECIFACTOR, #32
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fmrx OLDFPSCR, FPSCR
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ldr ip, =0x03030000 @ RunFast mode, short vectors of length 4, stride 1
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fmxr FPSCR, ip
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NOVFP vldr s0, [sp]
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vldr IN0, [PIN, #-0*4]
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vldr IN1, [PIN, #-1*4]
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vldr IN2, [PIN, #-2*4]
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vldr IN3, [PIN, #-3*4]
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beq 32f
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64: dca_lfe_fir 64
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.ltorg
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32: dca_lfe_fir 32
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endfunc
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.unreq POUT
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.unreq PIN
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.unreq PCOEF
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.unreq DECIFACTOR
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.unreq OLDFPSCR
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.unreq COUNTER
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.unreq SCALE32
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.unreq SCALE64
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.unreq IN0
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.unreq IN1
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.unreq IN2
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.unreq IN3
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.unreq IN4
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.unreq IN5
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.unreq IN6
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.unreq IN7
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.unreq COEF0
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.unreq COEF1
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.unreq COEF2
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.unreq COEF3
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.unreq COEF4
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.unreq COEF5
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.unreq COEF6
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.unreq COEF7
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.unreq ACCUM0
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.unreq ACCUM4
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.unreq POST0
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.unreq POST1
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.unreq POST2
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.unreq POST3
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IN .req a1
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SBACT .req a2
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OLDFPSCR .req a3
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IMDCT .req a4
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WINDOW .req v1
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OUT .req v2
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BUF .req v3
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SCALEINT .req v4 @ only used in softfp case
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COUNT .req v5
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SCALE .req s0
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/* Stack layout differs in softfp and hardfp cases:
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*
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* hardfp
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* fp -> 6 arg words saved by caller
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* a3,a4,v1-v3,v5,fp,lr on entry (a3 just to pad to 8 bytes)
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* s16-s23 on entry
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* align 16
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* buf -> 8*32*4 bytes buffer
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* s0 on entry
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* sp -> 3 arg words for callee
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*
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* softfp
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* fp -> 7 arg words saved by caller
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* a4,v1-v5,fp,lr on entry
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* s16-s23 on entry
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* align 16
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* buf -> 8*32*4 bytes buffer
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* sp -> 4 arg words for callee
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*/
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/* void ff_dca_qmf_32_subbands_vfp(float samples_in[32][8], int sb_act,
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* SynthFilterContext *synth, FFTContext *imdct,
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* float (*synth_buf_ptr)[512],
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* int *synth_buf_offset, float (*synth_buf2)[32],
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* const float (*window)[512], float *samples_out,
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* float (*raXin)[32], float scale);
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*/
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function ff_dca_qmf_32_subbands_vfp, export=1
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VFP push {a3-a4,v1-v3,v5,fp,lr}
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NOVFP push {a4,v1-v5,fp,lr}
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add fp, sp, #8*4
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vpush {s16-s23}
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@ The buffer pointed at by raXin isn't big enough for us to do a
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@ complete matrix transposition as we want to, so allocate an
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@ alternative buffer from the stack. Align to 4 words for speed.
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sub BUF, sp, #8*32*4
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bic BUF, BUF, #15
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mov sp, BUF
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ldr lr, =0x03330000 @ RunFast mode, short vectors of length 4, stride 2
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fmrx OLDFPSCR, FPSCR
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fmxr FPSCR, lr
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@ COUNT is used to count down 2 things at once:
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@ bits 0-4 are the number of word pairs remaining in the output row
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@ bits 5-31 are the number of words to copy (with possible negation)
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@ from the source matrix before we start zeroing the remainder
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mov COUNT, #(-4 << 5) + 16
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adds COUNT, COUNT, SBACT, lsl #5
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bmi 2f
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1:
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vldr s8, [IN, #(0*8+0)*4]
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vldr s10, [IN, #(0*8+1)*4]
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vldr s12, [IN, #(0*8+2)*4]
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vldr s14, [IN, #(0*8+3)*4]
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vldr s16, [IN, #(0*8+4)*4]
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vldr s18, [IN, #(0*8+5)*4]
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vldr s20, [IN, #(0*8+6)*4]
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vldr s22, [IN, #(0*8+7)*4]
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vneg.f s8, s8
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vldr s9, [IN, #(1*8+0)*4]
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vldr s11, [IN, #(1*8+1)*4]
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vldr s13, [IN, #(1*8+2)*4]
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vldr s15, [IN, #(1*8+3)*4]
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vneg.f s16, s16
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vldr s17, [IN, #(1*8+4)*4]
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vldr s19, [IN, #(1*8+5)*4]
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vldr s21, [IN, #(1*8+6)*4]
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vldr s23, [IN, #(1*8+7)*4]
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vstr d4, [BUF, #(0*32+0)*4]
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vstr d5, [BUF, #(1*32+0)*4]
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vstr d6, [BUF, #(2*32+0)*4]
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vstr d7, [BUF, #(3*32+0)*4]
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vstr d8, [BUF, #(4*32+0)*4]
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vstr d9, [BUF, #(5*32+0)*4]
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vstr d10, [BUF, #(6*32+0)*4]
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vstr d11, [BUF, #(7*32+0)*4]
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vldr s9, [IN, #(3*8+0)*4]
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vldr s11, [IN, #(3*8+1)*4]
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vldr s13, [IN, #(3*8+2)*4]
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vldr s15, [IN, #(3*8+3)*4]
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vldr s17, [IN, #(3*8+4)*4]
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vldr s19, [IN, #(3*8+5)*4]
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vldr s21, [IN, #(3*8+6)*4]
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vldr s23, [IN, #(3*8+7)*4]
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vneg.f s9, s9
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vldr s8, [IN, #(2*8+0)*4]
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vldr s10, [IN, #(2*8+1)*4]
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vldr s12, [IN, #(2*8+2)*4]
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vldr s14, [IN, #(2*8+3)*4]
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vneg.f s17, s17
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vldr s16, [IN, #(2*8+4)*4]
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vldr s18, [IN, #(2*8+5)*4]
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vldr s20, [IN, #(2*8+6)*4]
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vldr s22, [IN, #(2*8+7)*4]
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vstr d4, [BUF, #(0*32+2)*4]
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vstr d5, [BUF, #(1*32+2)*4]
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vstr d6, [BUF, #(2*32+2)*4]
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vstr d7, [BUF, #(3*32+2)*4]
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vstr d8, [BUF, #(4*32+2)*4]
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vstr d9, [BUF, #(5*32+2)*4]
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vstr d10, [BUF, #(6*32+2)*4]
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vstr d11, [BUF, #(7*32+2)*4]
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add IN, IN, #4*8*4
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add BUF, BUF, #4*4
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subs COUNT, COUNT, #(4 << 5) + 2
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bpl 1b
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2: @ Now deal with trailing < 4 samples
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adds COUNT, COUNT, #3 << 5
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bmi 4f @ sb_act was a multiple of 4
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bics lr, COUNT, #0x1F
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bne 3f
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@ sb_act was n*4+1
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vldr s8, [IN, #(0*8+0)*4]
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vldr s10, [IN, #(0*8+1)*4]
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vldr s12, [IN, #(0*8+2)*4]
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vldr s14, [IN, #(0*8+3)*4]
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vldr s16, [IN, #(0*8+4)*4]
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vldr s18, [IN, #(0*8+5)*4]
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vldr s20, [IN, #(0*8+6)*4]
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vldr s22, [IN, #(0*8+7)*4]
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vneg.f s8, s8
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vldr s9, zero
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vldr s11, zero
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vldr s13, zero
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vldr s15, zero
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vneg.f s16, s16
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vldr s17, zero
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vldr s19, zero
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vldr s21, zero
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vldr s23, zero
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vstr d4, [BUF, #(0*32+0)*4]
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vstr d5, [BUF, #(1*32+0)*4]
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vstr d6, [BUF, #(2*32+0)*4]
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vstr d7, [BUF, #(3*32+0)*4]
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vstr d8, [BUF, #(4*32+0)*4]
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vstr d9, [BUF, #(5*32+0)*4]
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vstr d10, [BUF, #(6*32+0)*4]
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vstr d11, [BUF, #(7*32+0)*4]
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add BUF, BUF, #2*4
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sub COUNT, COUNT, #1
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b 4f
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3: @ sb_act was n*4+2 or n*4+3, so do the first 2
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vldr s8, [IN, #(0*8+0)*4]
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vldr s10, [IN, #(0*8+1)*4]
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vldr s12, [IN, #(0*8+2)*4]
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vldr s14, [IN, #(0*8+3)*4]
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vldr s16, [IN, #(0*8+4)*4]
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vldr s18, [IN, #(0*8+5)*4]
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vldr s20, [IN, #(0*8+6)*4]
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vldr s22, [IN, #(0*8+7)*4]
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vneg.f s8, s8
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vldr s9, [IN, #(1*8+0)*4]
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vldr s11, [IN, #(1*8+1)*4]
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vldr s13, [IN, #(1*8+2)*4]
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vldr s15, [IN, #(1*8+3)*4]
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vneg.f s16, s16
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vldr s17, [IN, #(1*8+4)*4]
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vldr s19, [IN, #(1*8+5)*4]
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vldr s21, [IN, #(1*8+6)*4]
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vldr s23, [IN, #(1*8+7)*4]
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vstr d4, [BUF, #(0*32+0)*4]
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vstr d5, [BUF, #(1*32+0)*4]
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vstr d6, [BUF, #(2*32+0)*4]
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vstr d7, [BUF, #(3*32+0)*4]
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vstr d8, [BUF, #(4*32+0)*4]
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vstr d9, [BUF, #(5*32+0)*4]
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vstr d10, [BUF, #(6*32+0)*4]
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vstr d11, [BUF, #(7*32+0)*4]
|
|
add BUF, BUF, #2*4
|
|
sub COUNT, COUNT, #(2 << 5) + 1
|
|
bics lr, COUNT, #0x1F
|
|
bne 4f
|
|
@ sb_act was n*4+3
|
|
vldr s8, [IN, #(2*8+0)*4]
|
|
vldr s10, [IN, #(2*8+1)*4]
|
|
vldr s12, [IN, #(2*8+2)*4]
|
|
vldr s14, [IN, #(2*8+3)*4]
|
|
vldr s16, [IN, #(2*8+4)*4]
|
|
vldr s18, [IN, #(2*8+5)*4]
|
|
vldr s20, [IN, #(2*8+6)*4]
|
|
vldr s22, [IN, #(2*8+7)*4]
|
|
vldr s9, zero
|
|
vldr s11, zero
|
|
vldr s13, zero
|
|
vldr s15, zero
|
|
vldr s17, zero
|
|
vldr s19, zero
|
|
vldr s21, zero
|
|
vldr s23, zero
|
|
vstr d4, [BUF, #(0*32+0)*4]
|
|
vstr d5, [BUF, #(1*32+0)*4]
|
|
vstr d6, [BUF, #(2*32+0)*4]
|
|
vstr d7, [BUF, #(3*32+0)*4]
|
|
vstr d8, [BUF, #(4*32+0)*4]
|
|
vstr d9, [BUF, #(5*32+0)*4]
|
|
vstr d10, [BUF, #(6*32+0)*4]
|
|
vstr d11, [BUF, #(7*32+0)*4]
|
|
add BUF, BUF, #2*4
|
|
sub COUNT, COUNT, #1
|
|
4: @ Now fill the remainder with 0
|
|
vldr s8, zero
|
|
vldr s9, zero
|
|
ands COUNT, COUNT, #0x1F
|
|
beq 6f
|
|
5: vstr d4, [BUF, #(0*32+0)*4]
|
|
vstr d4, [BUF, #(1*32+0)*4]
|
|
vstr d4, [BUF, #(2*32+0)*4]
|
|
vstr d4, [BUF, #(3*32+0)*4]
|
|
vstr d4, [BUF, #(4*32+0)*4]
|
|
vstr d4, [BUF, #(5*32+0)*4]
|
|
vstr d4, [BUF, #(6*32+0)*4]
|
|
vstr d4, [BUF, #(7*32+0)*4]
|
|
add BUF, BUF, #2*4
|
|
subs COUNT, COUNT, #1
|
|
bne 5b
|
|
6:
|
|
fmxr FPSCR, OLDFPSCR
|
|
ldr WINDOW, [fp, #3*4]
|
|
ldr OUT, [fp, #4*4]
|
|
sub BUF, BUF, #32*4
|
|
NOVFP ldr SCALEINT, [fp, #6*4]
|
|
mov COUNT, #8
|
|
VFP vpush {SCALE}
|
|
VFP sub sp, sp, #3*4
|
|
NOVFP sub sp, sp, #4*4
|
|
7:
|
|
VFP ldr a1, [fp, #-7*4] @ imdct
|
|
NOVFP ldr a1, [fp, #-8*4]
|
|
ldmia fp, {a2-a4}
|
|
VFP stmia sp, {WINDOW, OUT, BUF}
|
|
NOVFP stmia sp, {WINDOW, OUT, BUF, SCALEINT}
|
|
VFP vldr SCALE, [sp, #3*4]
|
|
bl X(ff_synth_filter_float_vfp)
|
|
add OUT, OUT, #32*4
|
|
add BUF, BUF, #32*4
|
|
subs COUNT, COUNT, #1
|
|
bne 7b
|
|
|
|
A sub sp, fp, #(8+8)*4
|
|
T sub fp, fp, #(8+8)*4
|
|
T mov sp, fp
|
|
vpop {s16-s23}
|
|
VFP pop {a3-a4,v1-v3,v5,fp,pc}
|
|
NOVFP pop {a4,v1-v5,fp,pc}
|
|
endfunc
|
|
|
|
.unreq IN
|
|
.unreq SBACT
|
|
.unreq OLDFPSCR
|
|
.unreq IMDCT
|
|
.unreq WINDOW
|
|
.unreq OUT
|
|
.unreq BUF
|
|
.unreq SCALEINT
|
|
.unreq COUNT
|
|
|
|
.unreq SCALE
|
|
|
|
.align 2
|
|
zero: .word 0
|