.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