mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-11-13 16:08:01 +00:00
175 lines
3.8 KiB
Text
175 lines
3.8 KiB
Text
|
.586P
|
||
|
|
|
||
|
|
CODE SEGMENT PUBLIC USE32 'DATA'
|
||
|
|
ASSUME cs:CODE,ds:CODE
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_16BitReverb
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - source position
|
||
|
|
; edx - destination position
|
||
|
|
; ebx - Volume table
|
||
|
|
; ecx - number of samples
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
PUBLIC MV_16BitReverb_
|
||
|
|
MV_16BitReverb_:
|
||
|
|
mov esi, eax
|
||
|
|
lea edi, [edx - 2]
|
||
|
|
|
||
|
|
;ALIGN 4
|
||
|
|
rev16loop:
|
||
|
|
movzx eax, word ptr [esi] ; get sample
|
||
|
|
add edi, 2
|
||
|
|
|
||
|
|
movzx edx, ah
|
||
|
|
sub ah, ah
|
||
|
|
|
||
|
|
movsx eax, byte ptr [2*eax+ebx+1] ; volume translate low byte of sample
|
||
|
|
xor edx, 80h
|
||
|
|
|
||
|
|
movsx edx, word ptr [2*edx+ebx] ; volume translate high byte of sample
|
||
|
|
add esi, 2
|
||
|
|
|
||
|
|
lea eax, [ eax + edx + 80h ] ; mix high byte of sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
|
||
|
|
mov [edi], ax ; write new sample to destination
|
||
|
|
jnz rev16loop ; loop
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_8BitReverb
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - source position
|
||
|
|
; edx - destination position
|
||
|
|
; ebx - Volume table
|
||
|
|
; ecx - number of samples
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
PUBLIC MV_8BitReverb_
|
||
|
|
MV_8BitReverb_:
|
||
|
|
mov esi, eax
|
||
|
|
lea edi, [edx - 1]
|
||
|
|
|
||
|
|
xor eax, eax
|
||
|
|
|
||
|
|
;ALIGN 4
|
||
|
|
rev8loop:
|
||
|
|
; movzx eax, byte ptr [esi] ; get sample
|
||
|
|
mov al, byte ptr [esi] ; get sample
|
||
|
|
inc edi
|
||
|
|
|
||
|
|
; movsx eax, byte ptr [2*eax+ebx] ; volume translate sample
|
||
|
|
mov al, byte ptr [2*eax+ebx] ; volume translate sample
|
||
|
|
inc esi
|
||
|
|
|
||
|
|
; add eax, 80h
|
||
|
|
add al, 80h
|
||
|
|
dec ecx ; decrement count
|
||
|
|
|
||
|
|
mov [edi], al ; write new sample to destination
|
||
|
|
jnz rev8loop ; loop
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_16BitReverbFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - source position
|
||
|
|
; edx - destination position
|
||
|
|
; ebx - number of samples
|
||
|
|
; ecx - shift
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
PUBLIC MV_16BitReverbFast_
|
||
|
|
MV_16BitReverbFast_:
|
||
|
|
mov esi, eax
|
||
|
|
mov eax,OFFSET rpatch16+3
|
||
|
|
|
||
|
|
mov [eax],cl
|
||
|
|
lea edi, [edx - 2]
|
||
|
|
|
||
|
|
;ALIGN 4
|
||
|
|
frev16loop:
|
||
|
|
mov ax, word ptr [esi] ; get sample
|
||
|
|
add edi, 2
|
||
|
|
|
||
|
|
rpatch16:
|
||
|
|
sar ax, 5 ;;;;Add 1 before shift
|
||
|
|
add esi, 2
|
||
|
|
|
||
|
|
mov [edi], ax ; write new sample to destination
|
||
|
|
dec ebx ; decrement count
|
||
|
|
|
||
|
|
jnz frev16loop ; loop
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_8BitReverbFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - source position
|
||
|
|
; edx - destination position
|
||
|
|
; ebx - number of samples
|
||
|
|
; ecx - shift
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
PUBLIC MV_8BitReverbFast_
|
||
|
|
MV_8BitReverbFast_:
|
||
|
|
mov esi, eax
|
||
|
|
mov eax,OFFSET rpatch8+2
|
||
|
|
|
||
|
|
mov edi, edx
|
||
|
|
mov edx, 80h
|
||
|
|
|
||
|
|
mov [eax],cl
|
||
|
|
mov eax, 80h
|
||
|
|
|
||
|
|
shr eax, cl
|
||
|
|
|
||
|
|
dec edi
|
||
|
|
sub edx, eax
|
||
|
|
|
||
|
|
;ALIGN 4
|
||
|
|
frev8loop:
|
||
|
|
mov al, byte ptr [esi] ; get sample
|
||
|
|
inc esi
|
||
|
|
|
||
|
|
mov ecx, eax
|
||
|
|
inc edi
|
||
|
|
|
||
|
|
rpatch8:
|
||
|
|
shr eax, 3
|
||
|
|
xor ecx, 80h ; flip the sign bit
|
||
|
|
|
||
|
|
shr ecx, 7 ; shift the sign down to 1
|
||
|
|
add eax, edx
|
||
|
|
|
||
|
|
add eax, ecx ; add sign bit to round to 0
|
||
|
|
dec ebx ; decrement count
|
||
|
|
|
||
|
|
mov [edi], al ; write new sample to destination
|
||
|
|
jnz frev8loop ; loop
|
||
|
|
|
||
|
|
ret
|
||
|
|
|
||
|
|
CODE ENDS
|
||
|
|
END
|