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Infinity: fast path for single stream

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git-svn-id: svn://kolibrios.org@695 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge) 2008-01-14 02:53:46 +00:00
parent 71f27df7b3
commit 606f0073f5
2 changed files with 54 additions and 8 deletions
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2
kernel/trunk/drivers/infinity.asm
View File

@ -1021,7 +1021,7 @@ proc stop_buffer stdcall, str:dword
ret
endp
; parm
; param
; eax= mix_list
align 4

60
kernel/trunk/drivers/mixer.asm
View File

@ -36,9 +36,17 @@ proc new_mix stdcall, output:dword
test eax, eax
je .done
cmp eax, 1
ja @F
;use fast path
mov edi, [output]
lea edx, [mix_list]
call mix_fast
jmp .next
@@:
lea ebx, [mix_list]
stdcall mix_all, [output], ebx, eax
@@:
.next:
add [output], 512
dec [main_count]
jnz .mix
@ -47,10 +55,6 @@ proc new_mix stdcall, output:dword
and eax, -16
call FpuRestore
ret
.copy:
lea eax, [mix_list]
stdcall copy_mem, [output], [eax]
jmp @B
.done:
mov ecx, [main_count]
shl ecx, 7 ;ecx*= 512/4
@ -276,8 +280,8 @@ proc mix_all stdcall, dest:dword, list:dword, count:dword
psrad xmm0, 16
psrad xmm1, 16
cvtdq2ps xmm0, xmm0 ;time to use all power
cvtdq2ps xmm1, xmm1 ;of the dark side
cvtdq2ps xmm0, xmm0
cvtdq2ps xmm1, xmm1
mulps xmm0, xmm2
mulps xmm1, xmm2
@ -326,6 +330,48 @@ proc mix_all stdcall, dest:dword, list:dword, count:dword
ret
endp
; param
; edi = dest
; edx = mix_list
align 4
mix_fast:
mov ebx, 32
mov eax, [edx]
movss xmm2, [edx+4] ; vol Lf
movss xmm3, [edx+8] ; vol Rf
shufps xmm2, xmm3, 0 ; Rf Rf Lf Lf
shufps xmm2, xmm2, 0x88 ; volume level Rf Lf Rf Lf
.mix:
movdqa xmm1, [eax] ; R3w L3w R2w L2w R1w L1w R0w L0w
add eax, 16
punpcklwd xmm0, xmm1 ; R1w R1w L1w L1W R0w R0w L0w L0w
punpckhwd xmm1, xmm1 ; R3w R3w L3w L3w R2w R2w L2w L2w
psrad xmm0, 16 ; R1d L1d R0d L0d
psrad xmm1, 16 ; R3d L3d R2d L2d
cvtdq2ps xmm0, xmm0 ; time to use all power
cvtdq2ps xmm1, xmm1 ; of the dark side
mulps xmm0, xmm2 ; R1f' L1f' R0f' L0f'
mulps xmm1, xmm2 ; R3f' L3f' R2f' L2f'
cvtps2dq xmm0, xmm0 ; R1d' L1d' R0d' L0d'
cvtps2dq xmm1, xmm1 ; R3d' L3d' R2d' L2d'
packssdw xmm0, xmm0 ; R1w' L1w' R0w' L0w' R1w' L1w' R0w' L0w'
packssdw xmm1, xmm1 ; R3w' L3w' R2w' L2w' R3w' L3w' R2w' L2w'
punpcklqdq xmm0, xmm1 ; R3w' L3w' R2w' L2w' R1w' L1w' R0w' L0w'
movntdq [edi], xmm0
add edi, 16
dec ebx
jnz .mix
ret
else ; fixed point mmx version
align 4