681 lines
24 KiB
NASM
681 lines
24 KiB
NASM
|
.386
|
||
|
|
.MODEL flat
|
||
|
|
|
||
|
|
.data
|
||
|
|
.code
|
||
|
|
SEGMENT text USE32
|
||
|
|
ALIGN 16
|
||
|
|
|
||
|
|
EXTRN _MV_HarshClipTable:DWORD
|
||
|
|
EXTRN _MV_MixDestination:DWORD
|
||
|
|
EXTRN _MV_MixPosition:DWORD
|
||
|
|
EXTRN _MV_LeftVolume:DWORD
|
||
|
|
EXTRN _MV_RightVolume:DWORD
|
||
|
|
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix8BitMonoFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
MixBufferSize equ 256
|
||
|
|
|
||
|
|
PROC MV_Mix8BitMonoFast_
|
||
|
|
PUBLIC MV_Mix8BitMonoFast_
|
||
|
|
; Two at once
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume ; Since we're mono, use left volume
|
||
|
|
mov eax,OFFSET apatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET apatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Harsh Clip table ptr
|
||
|
|
mov ebx, _MV_HarshClipTable
|
||
|
|
add ebx, 128
|
||
|
|
mov eax,OFFSET apatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET apatch4+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET apatch5+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
mov eax,OFFSET apatch6+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
shr ecx, 1 ; double sample count
|
||
|
|
cmp ecx, 0
|
||
|
|
je short exit8m
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; apatch1 - volume table
|
||
|
|
; apatch2 - volume table
|
||
|
|
; apatch3 - harsh clip table
|
||
|
|
; apatch4 - harsh clip table
|
||
|
|
; apatch5 - sample rate
|
||
|
|
; apatch6 - sample rate
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
mov ebx,ebp ; begin calculating second sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr ebx,16 ; finish calculation for second sample
|
||
|
|
|
||
|
|
movzx eax, byte ptr [esi+eax] ; get first sample
|
||
|
|
movzx ebx, byte ptr [esi+ebx] ; get second sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix8Mloop:
|
||
|
|
movzx edx, byte ptr [edi] ; get current sample from destination
|
||
|
|
apatch1:
|
||
|
|
movsx eax, byte ptr [2*eax+12345678h] ; volume translate first sample
|
||
|
|
apatch2:
|
||
|
|
movsx ebx, byte ptr [2*ebx+12345678h] ; volume translate second sample
|
||
|
|
add eax, edx ; mix first sample
|
||
|
|
movzx edx, byte ptr [edi + 1] ; get current sample from destination
|
||
|
|
apatch3:
|
||
|
|
mov eax, [eax + 12345678h] ; harsh clip new sample
|
||
|
|
add ebx, edx ; mix second sample
|
||
|
|
mov [edi], al ; write new sample to destination
|
||
|
|
mov edx, ebp ; begin calculating third sample
|
||
|
|
apatch4:
|
||
|
|
mov ebx, [ebx + 12345678h] ; harsh clip new sample
|
||
|
|
apatch5:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
shr edx, 16 ; finish calculation for third sample
|
||
|
|
mov eax, ebp ; begin calculating fourth sample
|
||
|
|
inc edi ; move destination to second sample
|
||
|
|
shr eax, 16 ; finish calculation for fourth sample
|
||
|
|
mov [edi], bl ; write new sample to destination
|
||
|
|
apatch6:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get fourth sample
|
||
|
|
movzx eax, byte ptr [esi+edx] ; get third sample
|
||
|
|
inc edi ; move destination to third sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix8Mloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
exit8m:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix8BitMonoFast_
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix8BitStereoFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
PROC MV_Mix8BitStereoFast_
|
||
|
|
PUBLIC MV_Mix8BitStereoFast_
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume
|
||
|
|
mov eax,OFFSET bpatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
mov ebx, _MV_RightVolume
|
||
|
|
mov eax,OFFSET bpatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET bpatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
; Harsh Clip table ptr
|
||
|
|
mov ebx, _MV_HarshClipTable
|
||
|
|
add ebx,128
|
||
|
|
mov eax,OFFSET bpatch4+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET bpatch5+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
cmp ecx, 0
|
||
|
|
je short exit8S
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; bpatch1 - left volume table
|
||
|
|
; bpatch2 - right volume table
|
||
|
|
; bpatch3 - sample rate
|
||
|
|
; bpatch4 - harsh clip table
|
||
|
|
; bpatch5 - harsh clip table
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get first sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix8Sloop:
|
||
|
|
bpatch1:
|
||
|
|
movsx eax, byte ptr [2*ebx+12345678h] ; volume translate left sample
|
||
|
|
movzx edx, byte ptr [edi] ; get current sample from destination
|
||
|
|
bpatch2:
|
||
|
|
movsx ebx, byte ptr [2*ebx+12345678h] ; volume translate right sample
|
||
|
|
add eax, edx ; mix left sample
|
||
|
|
bpatch3:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movzx edx, byte ptr [edi+1] ; get current sample from destination
|
||
|
|
bpatch4:
|
||
|
|
mov eax, [eax + 12345678h] ; harsh clip left sample
|
||
|
|
add ebx, edx ; mix right sample
|
||
|
|
mov [edi], al ; write left sample to destination
|
||
|
|
bpatch5:
|
||
|
|
mov ebx, [ebx + 12345678h] ; harsh clip right sample
|
||
|
|
inc edi ; move destination to second sample
|
||
|
|
mov edx, ebp ; begin calculating second sample
|
||
|
|
mov [edi], bl ; write right sample to destination
|
||
|
|
shr edx, 16 ; finish calculation for second sample
|
||
|
|
inc edi ; move destination to second sample
|
||
|
|
movzx ebx, byte ptr [esi+edx] ; get second sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix8Sloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
|
||
|
|
EXIT8S:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix8BitStereoFast_
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix8Bit1ChannelFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
PROC MV_Mix8Bit1ChannelFast_
|
||
|
|
PUBLIC MV_Mix8Bit1ChannelFast_
|
||
|
|
; Two at once
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume
|
||
|
|
mov eax,OFFSET epatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET epatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Harsh Clip table ptr
|
||
|
|
mov ebx, _MV_HarshClipTable
|
||
|
|
add ebx,128
|
||
|
|
mov eax,OFFSET epatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET epatch4+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET epatch5+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
mov eax,OFFSET epatch6+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
shr ecx, 1 ; double sample count
|
||
|
|
cmp ecx, 0
|
||
|
|
je exit81C
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; apatch1 - volume table
|
||
|
|
; apatch2 - volume table
|
||
|
|
; apatch3 - harsh clip table
|
||
|
|
; apatch4 - harsh clip table
|
||
|
|
; apatch5 - sample rate
|
||
|
|
; apatch6 - sample rate
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
mov ebx,ebp ; begin calculating second sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr ebx,16 ; finish calculation for second sample
|
||
|
|
|
||
|
|
movzx eax, byte ptr [esi+eax] ; get first sample
|
||
|
|
movzx ebx, byte ptr [esi+ebx] ; get second sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix81Cloop:
|
||
|
|
movzx edx, byte ptr [edi] ; get current sample from destination
|
||
|
|
epatch1:
|
||
|
|
movsx eax, byte ptr [2*eax+12345678h] ; volume translate first sample
|
||
|
|
epatch2:
|
||
|
|
movsx ebx, byte ptr [2*ebx+12345678h] ; volume translate second sample
|
||
|
|
add eax, edx ; mix first sample
|
||
|
|
movzx edx, byte ptr [edi + 2] ; get current sample from destination
|
||
|
|
epatch3:
|
||
|
|
mov eax, [eax + 12345678h] ; harsh clip new sample
|
||
|
|
add ebx, edx ; mix second sample
|
||
|
|
mov [edi], al ; write new sample to destination
|
||
|
|
mov edx, ebp ; begin calculating third sample
|
||
|
|
epatch4:
|
||
|
|
mov ebx, [ebx + 12345678h] ; harsh clip new sample
|
||
|
|
epatch5:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
shr edx, 16 ; finish calculation for third sample
|
||
|
|
mov eax, ebp ; begin calculating fourth sample
|
||
|
|
add edi, 2 ; move destination to second sample
|
||
|
|
shr eax, 16 ; finish calculation for fourth sample
|
||
|
|
mov [edi], bl ; write new sample to destination
|
||
|
|
epatch6:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get fourth sample
|
||
|
|
movzx eax, byte ptr [esi+edx] ; get third sample
|
||
|
|
add edi, 2 ; move destination to third sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix81Cloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
EXIT81C:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix8Bit1ChannelFast_
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix16BitMonoFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
MixBufferSize equ 256
|
||
|
|
|
||
|
|
PROC MV_Mix16BitMonoFast_
|
||
|
|
PUBLIC MV_Mix16BitMonoFast_
|
||
|
|
; Two at once
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume
|
||
|
|
mov eax,OFFSET cpatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET cpatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET cpatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
mov eax,OFFSET cpatch4+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
shr ecx, 1 ; double sample count
|
||
|
|
cmp ecx, 0
|
||
|
|
je exit16M
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; cpatch1 - volume table
|
||
|
|
; cpatch2 - volume table
|
||
|
|
; cpatch3 - sample rate
|
||
|
|
; cpatch4 - sample rate
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
mov ebx,ebp ; begin calculating second sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr ebx,16 ; finish calculation for second sample
|
||
|
|
|
||
|
|
movzx eax, byte ptr [esi+eax] ; get first sample
|
||
|
|
movzx ebx, byte ptr [esi+ebx] ; get second sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix16Mloop:
|
||
|
|
movsx edx, word ptr [edi] ; get current sample from destination
|
||
|
|
cpatch1:
|
||
|
|
movsx eax, word ptr [2*eax+12345678h] ; volume translate first sample
|
||
|
|
cpatch2:
|
||
|
|
movsx ebx, word ptr [2*ebx+12345678h] ; volume translate second sample
|
||
|
|
add eax, edx ; mix first sample
|
||
|
|
movsx edx, word ptr [edi + 2] ; get current sample from destination
|
||
|
|
|
||
|
|
cmp eax, -32768 ; Harsh clip sample
|
||
|
|
jge short m16skip1
|
||
|
|
mov eax, -32768
|
||
|
|
jmp short m16skip2
|
||
|
|
m16skip1:
|
||
|
|
cmp eax, 32767
|
||
|
|
jle short m16skip2
|
||
|
|
mov eax, 32767
|
||
|
|
m16skip2:
|
||
|
|
add ebx, edx ; mix second sample
|
||
|
|
mov [edi], ax ; write new sample to destination
|
||
|
|
mov edx, ebp ; begin calculating third sample
|
||
|
|
|
||
|
|
cmp ebx, -32768 ; Harsh clip sample
|
||
|
|
jge short m16skip3
|
||
|
|
mov ebx, -32768
|
||
|
|
jmp short m16skip4
|
||
|
|
m16skip3:
|
||
|
|
cmp ebx, 32767
|
||
|
|
jle short m16skip4
|
||
|
|
mov ebx, 32767
|
||
|
|
m16skip4:
|
||
|
|
cpatch3:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
shr edx, 16 ; finish calculation for third sample
|
||
|
|
mov eax, ebp ; begin calculating fourth sample
|
||
|
|
mov [edi + 2], bx ; write new sample to destination
|
||
|
|
shr eax, 16 ; finish calculation for fourth sample
|
||
|
|
|
||
|
|
cpatch4:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get fourth sample
|
||
|
|
add edi, 4 ; move destination to third sample
|
||
|
|
movzx eax, byte ptr [esi+edx] ; get third sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix16Mloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
EXIT16M:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix16BitMonoFast_
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix16BitStereoFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
PROC MV_Mix16BitStereoFast_
|
||
|
|
PUBLIC MV_Mix16BitStereoFast_
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume
|
||
|
|
mov eax,OFFSET dpatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
mov ebx, _MV_RightVolume
|
||
|
|
mov eax,OFFSET dpatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET dpatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
cmp ecx, 0
|
||
|
|
je exit16S
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; dpatch1 - left volume table
|
||
|
|
; dpatch2 - right volume table
|
||
|
|
; dpatch3 - sample rate
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get first sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix16Sloop:
|
||
|
|
dpatch1:
|
||
|
|
movsx eax, word ptr [2*ebx+12345678h] ; volume translate left sample
|
||
|
|
movsx edx, word ptr [edi] ; get current sample from destination
|
||
|
|
dpatch2:
|
||
|
|
movsx ebx, word ptr [2*ebx+12345678h] ; volume translate right sample
|
||
|
|
add eax, edx ; mix left sample
|
||
|
|
dpatch3:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movsx edx, word ptr [edi+2] ; get current sample from destination
|
||
|
|
|
||
|
|
cmp eax, -32768 ; Harsh clip sample
|
||
|
|
jge short s16skip1
|
||
|
|
mov eax, -32768
|
||
|
|
jmp short s16skip2
|
||
|
|
s16skip1:
|
||
|
|
cmp eax, 32767
|
||
|
|
jle short s16skip2
|
||
|
|
mov eax, 32767
|
||
|
|
s16skip2:
|
||
|
|
add ebx, edx ; mix right sample
|
||
|
|
mov [edi], ax ; write left sample to destination
|
||
|
|
|
||
|
|
cmp ebx, -32768 ; Harsh clip sample
|
||
|
|
jge short s16skip3
|
||
|
|
mov ebx, -32768
|
||
|
|
jmp short s16skip4
|
||
|
|
s16skip3:
|
||
|
|
cmp ebx, 32767
|
||
|
|
jle short s16skip4
|
||
|
|
mov ebx, 32767
|
||
|
|
s16skip4:
|
||
|
|
|
||
|
|
mov edx, ebp ; begin calculating second sample
|
||
|
|
mov [edi+2], bx ; write right sample to destination
|
||
|
|
shr edx, 16 ; finish calculation for second sample
|
||
|
|
add edi, 4 ; move destination to second sample
|
||
|
|
movzx ebx, byte ptr [esi+edx] ; get second sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix16Sloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
exit16S:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix16BitStereoFast_
|
||
|
|
|
||
|
|
;================
|
||
|
|
;
|
||
|
|
; MV_Mix16Bit1ChannelFast
|
||
|
|
;
|
||
|
|
;================
|
||
|
|
|
||
|
|
; eax - position
|
||
|
|
; edx - rate
|
||
|
|
; ebx - start
|
||
|
|
; ecx - number of samples to mix
|
||
|
|
|
||
|
|
MixBufferSize equ 256
|
||
|
|
|
||
|
|
PROC MV_Mix16Bit1ChannelFast_
|
||
|
|
PUBLIC MV_Mix16Bit1ChannelFast_
|
||
|
|
; Two at once
|
||
|
|
pushad
|
||
|
|
|
||
|
|
mov ebp, eax
|
||
|
|
|
||
|
|
mov esi, ebx ; Source pointer
|
||
|
|
|
||
|
|
; Volume table ptr
|
||
|
|
mov ebx, _MV_LeftVolume
|
||
|
|
mov eax,OFFSET fpatch1+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
mov eax,OFFSET fpatch2+4 ; convice tasm to modify code...
|
||
|
|
mov [eax],ebx
|
||
|
|
|
||
|
|
; Rate scale ptr
|
||
|
|
mov eax,OFFSET fpatch3+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
mov eax,OFFSET fpatch4+2 ; convice tasm to modify code...
|
||
|
|
mov [eax],edx
|
||
|
|
|
||
|
|
mov edi, _MV_MixDestination ; Get the position to write to
|
||
|
|
|
||
|
|
; Number of samples to mix
|
||
|
|
shr ecx, 1 ; double sample count
|
||
|
|
cmp ecx, 0
|
||
|
|
je exit161C
|
||
|
|
|
||
|
|
; eax - scratch
|
||
|
|
; ebx - scratch
|
||
|
|
; edx - scratch
|
||
|
|
; ecx - count
|
||
|
|
; edi - destination
|
||
|
|
; esi - source
|
||
|
|
; ebp - frac pointer
|
||
|
|
; cpatch1 - volume table
|
||
|
|
; cpatch2 - volume table
|
||
|
|
; cpatch3 - sample rate
|
||
|
|
; cpatch4 - sample rate
|
||
|
|
|
||
|
|
mov eax,ebp ; begin calculating first sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr eax,16 ; finish calculation for first sample
|
||
|
|
|
||
|
|
mov ebx,ebp ; begin calculating second sample
|
||
|
|
add ebp,edx ; advance frac pointer
|
||
|
|
shr ebx,16 ; finish calculation for second sample
|
||
|
|
|
||
|
|
movzx eax, byte ptr [esi+eax] ; get first sample
|
||
|
|
movzx ebx, byte ptr [esi+ebx] ; get second sample
|
||
|
|
|
||
|
|
ALIGN 16
|
||
|
|
mix161Cloop:
|
||
|
|
movsx edx, word ptr [edi] ; get current sample from destination
|
||
|
|
fpatch1:
|
||
|
|
movsx eax, word ptr [2*eax+12345678h] ; volume translate first sample
|
||
|
|
fpatch2:
|
||
|
|
movsx ebx, word ptr [2*ebx+12345678h] ; volume translate second sample
|
||
|
|
add eax, edx ; mix first sample
|
||
|
|
movsx edx, word ptr [edi + 4] ; get current sample from destination
|
||
|
|
|
||
|
|
cmp eax, -32768 ; Harsh clip sample
|
||
|
|
jge short m16c1skip1
|
||
|
|
mov eax, -32768
|
||
|
|
jmp short m16c1skip2
|
||
|
|
m16c1skip1:
|
||
|
|
cmp eax, 32767
|
||
|
|
jle short m16c1skip2
|
||
|
|
mov eax, 32767
|
||
|
|
m16c1skip2:
|
||
|
|
add ebx, edx ; mix second sample
|
||
|
|
mov [edi], ax ; write new sample to destination
|
||
|
|
mov edx, ebp ; begin calculating third sample
|
||
|
|
|
||
|
|
cmp ebx, -32768 ; Harsh clip sample
|
||
|
|
jge short m16c1skip3
|
||
|
|
mov ebx, -32768
|
||
|
|
jmp short m16c1skip4
|
||
|
|
m16c1skip3:
|
||
|
|
cmp ebx, 32767
|
||
|
|
jle short m16c1skip4
|
||
|
|
mov ebx, 32767
|
||
|
|
m16c1skip4:
|
||
|
|
fpatch3:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
shr edx, 16 ; finish calculation for third sample
|
||
|
|
mov eax, ebp ; begin calculating fourth sample
|
||
|
|
mov [edi + 4], bx ; write new sample to destination
|
||
|
|
shr eax, 16 ; finish calculation for fourth sample
|
||
|
|
|
||
|
|
fpatch4:
|
||
|
|
add ebp,12345678h ; advance frac pointer
|
||
|
|
movzx ebx, byte ptr [esi+eax] ; get fourth sample
|
||
|
|
add edi, 8 ; move destination to third sample
|
||
|
|
movzx eax, byte ptr [esi+edx] ; get third sample
|
||
|
|
dec ecx ; decrement count
|
||
|
|
jnz mix161Cloop ; loop
|
||
|
|
|
||
|
|
mov _MV_MixDestination, edi ; Store the current write position
|
||
|
|
mov _MV_MixPosition, ebp ; return position
|
||
|
|
exit161C:
|
||
|
|
popad
|
||
|
|
ret
|
||
|
|
ENDP MV_Mix16Bit1ChannelFast_
|
||
|
|
|
||
|
|
ENDS
|
||
|
|
|
||
|
|
END
|