forked from KolibriOS/kolibrios
206 lines
6.2 KiB
ArmAsm
206 lines
6.2 KiB
ArmAsm
/*
|
|
* Copyright (c) 2013 RISC OS Open Ltd
|
|
* Author: Ben Avison <bavison@riscosopen.org>
|
|
*
|
|
* 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/arm/asm.S"
|
|
|
|
CONTEXT .req a1
|
|
ORIGOUT .req a2
|
|
IN .req a3
|
|
OUT .req v1
|
|
REVTAB .req v2
|
|
TCOS .req v3
|
|
TSIN .req v4
|
|
OLDFPSCR .req v5
|
|
J0 .req a2
|
|
J1 .req a4
|
|
J2 .req ip
|
|
J3 .req lr
|
|
|
|
.macro prerotation_innerloop
|
|
.set trig_lo, k
|
|
.set trig_hi, n4 - k - 2
|
|
.set in_lo, trig_lo * 2
|
|
.set in_hi, trig_hi * 2
|
|
vldr d8, [TCOS, #trig_lo*4] @ s16,s17
|
|
vldr d9, [TCOS, #trig_hi*4] @ s18,s19
|
|
vldr s0, [IN, #in_hi*4 + 12]
|
|
vldr s1, [IN, #in_hi*4 + 4]
|
|
vldr s2, [IN, #in_lo*4 + 12]
|
|
vldr s3, [IN, #in_lo*4 + 4]
|
|
vmul.f s8, s0, s16 @ vector operation
|
|
vldr d10, [TSIN, #trig_lo*4] @ s20,s21
|
|
vldr d11, [TSIN, #trig_hi*4] @ s22,s23
|
|
vldr s4, [IN, #in_lo*4]
|
|
vldr s5, [IN, #in_lo*4 + 8]
|
|
vldr s6, [IN, #in_hi*4]
|
|
vldr s7, [IN, #in_hi*4 + 8]
|
|
ldr J0, [REVTAB, #trig_lo*2]
|
|
vmul.f s12, s0, s20 @ vector operation
|
|
ldr J2, [REVTAB, #trig_hi*2]
|
|
mov J1, J0, lsr #16
|
|
and J0, J0, #255 @ halfword value will be < n4
|
|
vmls.f s8, s4, s20 @ vector operation
|
|
mov J3, J2, lsr #16
|
|
and J2, J2, #255 @ halfword value will be < n4
|
|
add J0, OUT, J0, lsl #3
|
|
vmla.f s12, s4, s16 @ vector operation
|
|
add J1, OUT, J1, lsl #3
|
|
add J2, OUT, J2, lsl #3
|
|
add J3, OUT, J3, lsl #3
|
|
vstr s8, [J0]
|
|
vstr s9, [J1]
|
|
vstr s10, [J2]
|
|
vstr s11, [J3]
|
|
vstr s12, [J0, #4]
|
|
vstr s13, [J1, #4]
|
|
vstr s14, [J2, #4]
|
|
vstr s15, [J3, #4]
|
|
.set k, k + 2
|
|
.endm
|
|
|
|
.macro postrotation_innerloop tail, head
|
|
.set trig_lo_head, n8 - k - 2
|
|
.set trig_hi_head, n8 + k
|
|
.set out_lo_head, trig_lo_head * 2
|
|
.set out_hi_head, trig_hi_head * 2
|
|
.set trig_lo_tail, n8 - (k - 2) - 2
|
|
.set trig_hi_tail, n8 + (k - 2)
|
|
.set out_lo_tail, trig_lo_tail * 2
|
|
.set out_hi_tail, trig_hi_tail * 2
|
|
.if (k & 2) == 0
|
|
TCOS_D0_HEAD .req d10 @ s20,s21
|
|
TCOS_D1_HEAD .req d11 @ s22,s23
|
|
TCOS_S0_TAIL .req s24
|
|
.else
|
|
TCOS_D0_HEAD .req d12 @ s24,s25
|
|
TCOS_D1_HEAD .req d13 @ s26,s27
|
|
TCOS_S0_TAIL .req s20
|
|
.endif
|
|
.ifnc "\tail",""
|
|
vmls.f s8, s0, TCOS_S0_TAIL @ vector operation
|
|
.endif
|
|
.ifnc "\head",""
|
|
vldr d8, [TSIN, #trig_lo_head*4] @ s16,s17
|
|
vldr d9, [TSIN, #trig_hi_head*4] @ s18,s19
|
|
vldr TCOS_D0_HEAD, [TCOS, #trig_lo_head*4]
|
|
.endif
|
|
.ifnc "\tail",""
|
|
vmla.f s12, s4, TCOS_S0_TAIL @ vector operation
|
|
.endif
|
|
.ifnc "\head",""
|
|
vldr s0, [OUT, #out_lo_head*4]
|
|
vldr s1, [OUT, #out_lo_head*4 + 8]
|
|
vldr s2, [OUT, #out_hi_head*4]
|
|
vldr s3, [OUT, #out_hi_head*4 + 8]
|
|
vldr s4, [OUT, #out_lo_head*4 + 4]
|
|
vldr s5, [OUT, #out_lo_head*4 + 12]
|
|
vldr s6, [OUT, #out_hi_head*4 + 4]
|
|
vldr s7, [OUT, #out_hi_head*4 + 12]
|
|
.endif
|
|
.ifnc "\tail",""
|
|
vstr s8, [OUT, #out_lo_tail*4]
|
|
vstr s9, [OUT, #out_lo_tail*4 + 8]
|
|
vstr s10, [OUT, #out_hi_tail*4]
|
|
vstr s11, [OUT, #out_hi_tail*4 + 8]
|
|
.endif
|
|
.ifnc "\head",""
|
|
vmul.f s8, s4, s16 @ vector operation
|
|
.endif
|
|
.ifnc "\tail",""
|
|
vstr s12, [OUT, #out_hi_tail*4 + 12]
|
|
vstr s13, [OUT, #out_hi_tail*4 + 4]
|
|
vstr s14, [OUT, #out_lo_tail*4 + 12]
|
|
vstr s15, [OUT, #out_lo_tail*4 + 4]
|
|
.endif
|
|
.ifnc "\head",""
|
|
vmul.f s12, s0, s16 @ vector operation
|
|
vldr TCOS_D1_HEAD, [TCOS, #trig_hi_head*4]
|
|
.endif
|
|
.unreq TCOS_D0_HEAD
|
|
.unreq TCOS_D1_HEAD
|
|
.unreq TCOS_S0_TAIL
|
|
.ifnc "\head",""
|
|
.set k, k + 2
|
|
.endif
|
|
.endm
|
|
|
|
|
|
/* void ff_imdct_half_vfp(FFTContext *s,
|
|
* FFTSample *output,
|
|
* const FFTSample *input)
|
|
*/
|
|
function ff_imdct_half_vfp, export=1
|
|
ldr ip, [CONTEXT, #5*4] @ mdct_bits
|
|
teq ip, #6
|
|
it ne
|
|
bne X(ff_imdct_half_c) @ only case currently accelerated is the one used by DCA
|
|
|
|
.set n, 1<<6
|
|
.set n2, n/2
|
|
.set n4, n/4
|
|
.set n8, n/8
|
|
|
|
push {v1-v5,lr}
|
|
vpush {s16-s27}
|
|
fmrx OLDFPSCR, FPSCR
|
|
ldr lr, =0x03030000 @ RunFast mode, short vectors of length 4, stride 1
|
|
fmxr FPSCR, lr
|
|
mov OUT, ORIGOUT
|
|
ldr REVTAB, [CONTEXT, #2*4]
|
|
ldr TCOS, [CONTEXT, #6*4]
|
|
ldr TSIN, [CONTEXT, #7*4]
|
|
|
|
.set k, 0
|
|
.rept n8/2
|
|
prerotation_innerloop
|
|
.endr
|
|
|
|
fmxr FPSCR, OLDFPSCR
|
|
mov a1, OUT
|
|
bl X(ff_fft16_vfp)
|
|
ldr lr, =0x03030000 @ RunFast mode, short vectors of length 4, stride 1
|
|
fmxr FPSCR, lr
|
|
|
|
.set k, 0
|
|
postrotation_innerloop , head
|
|
.rept n8/2 - 1
|
|
postrotation_innerloop tail, head
|
|
.endr
|
|
postrotation_innerloop tail
|
|
|
|
fmxr FPSCR, OLDFPSCR
|
|
vpop {s16-s27}
|
|
pop {v1-v5,pc}
|
|
endfunc
|
|
|
|
.unreq CONTEXT
|
|
.unreq ORIGOUT
|
|
.unreq IN
|
|
.unreq OUT
|
|
.unreq REVTAB
|
|
.unreq TCOS
|
|
.unreq TSIN
|
|
.unreq OLDFPSCR
|
|
.unreq J0
|
|
.unreq J1
|
|
.unreq J2
|
|
.unreq J3
|