mpv/mp3lib/decode_MMX.s

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5.4 KiB
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# this code comes under GPL
# This code was taken from http://www.mpg123.org
# See ChangeLog of mpg123-0.59s-pre.1 for detail
# Applied to mplayer by Nick Kurshev <nickols_k@mail.ru>
#
# Local ChangeLog:
# - Partial loops unrolling and removing MOVW insn from loops
#
.data
.align 8
null_one: .long 0x0000ffff, 0x0000ffff
one_null: .long 0xffff0000, 0xffff0000
.globl costab_mmx
costab_mmx:
.long 1056974725
.long 1057056395
.long 1057223771
.long 1057485416
.long 1057855544
.long 1058356026
.long 1059019886
.long 1059897405
.long 1061067246
.long 1062657950
.long 1064892987
.long 1066774581
.long 1069414683
.long 1073984175
.long 1079645762
.long 1092815430
.long 1057005197
.long 1057342072
.long 1058087743
.long 1059427869
.long 1061799040
.long 1065862217
.long 1071413542
.long 1084439708
.long 1057128951
.long 1058664893
.long 1063675095
.long 1076102863
.long 1057655764
.long 1067924853
.long 1060439283
.text
.globl synth_1to1_MMX_s
//
// void synth_1to1_MMX_s(real *bandPtr, int channel, short *samples,
// short *buffs, int *bo);
//
synth_1to1_MMX_s:
pushl %ebp
pushl %edi
pushl %esi
pushl %ebx
movl 24(%esp),%ecx
movl 28(%esp),%edi
movl $15,%ebx
movl 36(%esp),%edx
leal (%edi,%ecx,2),%edi
decl %ecx
movl 32(%esp),%esi
movl (%edx),%eax
jecxz .L1
decl %eax
andl %ebx,%eax
leal 1088(%esi),%esi
movl %eax,(%edx)
.L1:
leal (%esi,%eax,2),%edx
movl %eax,%ebp
incl %eax
pushl 20(%esp)
andl %ebx,%eax
leal 544(%esi,%eax,2),%ecx
incl %ebx
testl $1, %eax
jnz .L2
xchgl %edx,%ecx
incl %ebp
leal 544(%esi),%esi
.L2:
emms
pushl %edx
pushl %ecx
call *dct64_MMX_func
leal 1(%ebx), %ecx
subl %ebp,%ebx
pushl %ecx
leal decwins(%ebx,%ebx,1), %edx
shrl $1, %ecx
.align 16
.L3:
movq (%edx),%mm0
movq 64(%edx),%mm4
pmaddwd (%esi),%mm0
pmaddwd 32(%esi),%mm4
movq 8(%edx),%mm1
movq 72(%edx),%mm5
pmaddwd 8(%esi),%mm1
pmaddwd 40(%esi),%mm5
movq 16(%edx),%mm2
movq 80(%edx),%mm6
pmaddwd 16(%esi),%mm2
pmaddwd 48(%esi),%mm6
movq 24(%edx),%mm3
movq 88(%edx),%mm7
pmaddwd 24(%esi),%mm3
pmaddwd 56(%esi),%mm7
paddd %mm1,%mm0
paddd %mm5,%mm4
paddd %mm2,%mm0
paddd %mm6,%mm4
paddd %mm3,%mm0
paddd %mm7,%mm4
movq %mm0,%mm1
movq %mm4,%mm5
psrlq $32,%mm1
psrlq $32,%mm5
paddd %mm1,%mm0
paddd %mm5,%mm4
psrad $13,%mm0
psrad $13,%mm4
packssdw %mm0,%mm0
packssdw %mm4,%mm4
movq (%edi), %mm1
punpckldq %mm4, %mm0
pand one_null, %mm1
pand null_one, %mm0
por %mm0, %mm1
movq %mm1,(%edi)
leal 64(%esi),%esi
leal 128(%edx),%edx
leal 8(%edi),%edi
decl %ecx
jnz .L3
popl %ecx
andl $1, %ecx
jecxz .next_loop
movq (%edx),%mm0
pmaddwd (%esi),%mm0
movq 8(%edx),%mm1
pmaddwd 8(%esi),%mm1
movq 16(%edx),%mm2
pmaddwd 16(%esi),%mm2
movq 24(%edx),%mm3
pmaddwd 24(%esi),%mm3
paddd %mm1,%mm0
paddd %mm2,%mm0
paddd %mm3,%mm0
movq %mm0,%mm1
psrlq $32,%mm1
paddd %mm1,%mm0
psrad $13,%mm0
packssdw %mm0,%mm0
movd %mm0,%eax
movw %ax, (%edi)
leal 32(%esi),%esi
leal 64(%edx),%edx
leal 4(%edi),%edi
.next_loop:
subl $64,%esi
movl $7,%ecx
.align 16
.L4:
movq (%edx),%mm0
movq 64(%edx),%mm4
pmaddwd (%esi),%mm0
pmaddwd -32(%esi),%mm4
movq 8(%edx),%mm1
movq 72(%edx),%mm5
pmaddwd 8(%esi),%mm1
pmaddwd -24(%esi),%mm5
movq 16(%edx),%mm2
movq 80(%edx),%mm6
pmaddwd 16(%esi),%mm2
pmaddwd -16(%esi),%mm6
movq 24(%edx),%mm3
movq 88(%edx),%mm7
pmaddwd 24(%esi),%mm3
pmaddwd -8(%esi),%mm7
paddd %mm1,%mm0
paddd %mm5,%mm4
paddd %mm2,%mm0
paddd %mm6,%mm4
paddd %mm3,%mm0
paddd %mm7,%mm4
movq %mm0,%mm1
movq %mm4,%mm5
psrlq $32,%mm1
psrlq $32,%mm5
paddd %mm0,%mm1
paddd %mm4,%mm5
psrad $13,%mm1
psrad $13,%mm5
packssdw %mm1,%mm1
packssdw %mm5,%mm5
psubd %mm0,%mm0
psubd %mm4,%mm4
psubsw %mm1,%mm0
psubsw %mm5,%mm4
movq (%edi), %mm1
punpckldq %mm4, %mm0
pand one_null, %mm1
pand null_one, %mm0
por %mm0, %mm1
movq %mm1,(%edi)
subl $64,%esi
addl $128,%edx
leal 8(%edi),%edi
decl %ecx
jnz .L4
movq (%edx),%mm0
pmaddwd (%esi),%mm0
movq 8(%edx),%mm1
pmaddwd 8(%esi),%mm1
movq 16(%edx),%mm2
pmaddwd 16(%esi),%mm2
movq 24(%edx),%mm3
pmaddwd 24(%esi),%mm3
paddd %mm1,%mm0
paddd %mm2,%mm0
paddd %mm3,%mm0
movq %mm0,%mm1
psrlq $32,%mm1
paddd %mm0,%mm1
psrad $13,%mm1
packssdw %mm1,%mm1
psubd %mm0,%mm0
psubsw %mm1,%mm0
movd %mm0,%eax
movw %ax,(%edi)
emms
popl %ebx
popl %esi
popl %edi
popl %ebp
ret