1066 lines
31 KiB
Plaintext
1066 lines
31 KiB
Plaintext
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ERROR EQU CX
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DELTAERROR EQU BP
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DELTAOFFSET EQU DX
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OLDPOSITION EQU [SI+2Ch]
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CURRENTPOSITION EQU [SI+4Ch]
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CURRENTPOSITIONERROR EQU Word Ptr [SI+48h]
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LOOPSTART EQU [SI+40h]
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LOOPEND EQU [SI+44h]
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STEPVALUE EQU [SI+02h]
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; STEPVALUEHIGH EQU Word Ptr [SI+04h]
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DIRECTIONFLAG EQU Byte Ptr [SI+0Bh]
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EXTRAOFFSET = MixResolution/8-2
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IF MIXRESOLUTION GT 16
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RESOLUTIONSHIFT = 2
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ELSE
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RESOLUTIONSHIFT = 1
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ENDIF
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IF STEREOENABLED
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RESOLUTIONSHIFT = RESOLUTIONSHIFT+1
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ENDIF
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MixBufferOffset DW 0
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MixBlockSize DW 0 ; Number of bytes to mix
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DW 0 ; High order 0
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PreMixFunction DW 0
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MixFunctionSeparate DW 0 ; Function to separate blocks into 64k
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; chunks.
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MixFunctionSeparateBackwards DW 0 ; function to separate blocks into 64k
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; in backwards steps.
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MixFunction DW 0 ; Function to mix samples
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LastPage DW 0
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MemoryType DB 0
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NumPages DB 0
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SampleLocation DW 0 ; Either EMS Handle or Conventional
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; base segment
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EMSPageFrame DW 0
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LoopCounter DW 0
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Proc MixNoLoop
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Call [PreMixFunction]
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Call PrepareSampleSegment
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Mov EAX, STEPVALUE ; 16.16 value
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Mul DWord Ptr [MixBlockSize] ; 16.0 value
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; EDX:EAX = 32.16 value
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ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
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; EDX.AX = BytesToMix*StepValue
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Xor CX, CX
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Mov EBX, LOOPEND
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Sub CX, CURRENTPOSITIONERROR
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SBB EBX, CURRENTPOSITION ; EBX.CX = (End-CurrentPosition)
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JC MixNoLoopEnd
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Cmp EDX, EBX
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JL MixNoLoop1
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JG MixNoLoop2
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Cmp AX, CX
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JAE MixNoLoop2
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MixNoLoop1:
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Jmp [MixFunctionSeparate]
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MixNoLoop2: ; Turn off
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Mov EDX, EBX
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Mov AX, CX
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Call [MixFunctionSeparate]
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MixNoLoop3:
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Mov Word Ptr [SI], 200h
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Test Byte Ptr [SI+3Ah], 80h
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JNZ MixNoLoop4
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Mov BX, [SI+38h]
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And Byte Ptr [BX], Not 4 ; Signify channel off
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MixNoLoop4:
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PushAD
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Push DS
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Mov EDX, CS:LastLeftValue
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Mov EDI, CS:LastRightValue
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IF USECLICKFADETHRESHHOLD
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Cmp EDX, CLICKFADETHRESHHOLD
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JBE NoClickRemovalLeft
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Xor EDX, EDX
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NoClickRemovalLeft:
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Cmp EDI, CLICKFADETHRESHHOLD
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JBE NoClickRemovalRight
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Xor EDI, EDI
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NoClickRemovalRight:
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ENDIF
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Neg EDX
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Neg EDI
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Mov CX, CS:MixBlockSize
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Mov SI, CS:MixBufferOffset
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Mov DS, CS:MixSegment
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JCXZ MixNoLoopClickRemovalEnd
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MixNoLoopClickRemoval1:
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Mov EAX, EDX
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Mov EBX, EDI
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Add [SI], EDX
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Add [SI+4], EDI
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SAR EAX, 12
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SAR EBX, 12
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Sub EAX, 1
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AdC EAX, 1
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Sub EBX, 1
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AdC EBX, 1
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Sub EDX, EAX
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Sub EDI, EBX
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Add SI, 8
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Loop MixNoLoopClickRemoval1
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MixNoLoopClickRemovalEnd:
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Add CS:LastClickRemovalLeft, EDX
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Add CS:LastClickRemovalRight, EDI
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Pop DS
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PopAD
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MixNoLoopEnd:
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Ret
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EndP MixNoLoop
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Proc MixForwardsLoop
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Call [PreMixFunction]
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Call PrepareSampleSegment
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MixForwardsLoopAgain:
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Mov EAX, STEPVALUE ; 16.16 value
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Mul DWord Ptr [MixBlockSize] ; 16.0 value
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; EDX:EAX = 32.16 value
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ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
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; EDX.AX = BytesToMix*StepValue
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Xor CX, CX
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Mov EBX, LOOPEND
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Sub CX, CURRENTPOSITIONERROR
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SBB EBX, CURRENTPOSITION ; EBX.CX = (End-CurrentPosition)
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JC UpdateMixForwardsLoop
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Cmp EDX, EBX
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JL MixForwardsLoop1
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JG MixForwardsLoop2
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Cmp AX, CX
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JB MixForwardsLoop1
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MixForwardsLoop2:
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Mov EDX, EBX
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Mov AX, CX
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Call [MixFunctionSeparate]
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UpdateMixForwardsLoop:
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Mov EAX, CURRENTPOSITION
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Xor EDX, EDX
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Mov EBX, LOOPEND
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SUB EAX, EBX
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SUB EBX, LOOPSTART
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JBE MixForwardsLoop3
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Div EBX
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Add EDX, LOOPSTART
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Mov CURRENTPOSITION, EDX
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; Cmp EBX, 10000h
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; JAE MixForwardsLoop4
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; Mov AX, STEPVALUEHIGH
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; Cmp AX, BX
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; JAE MixForwardsLoop5
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; MixForwardsLoop4:
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Cmp MixBlockSize, 0
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JG MixForwardsLoopAgain
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MixForwardsLoop3:
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Ret
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; MixForwardsLoop5:
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; Xor DX, DX
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; Div BX
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; Mov STEPVALUEHIGH, DX
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; Cmp MixBlockSize, 0
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; JG MixForwardsLoopAgain
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; Ret
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MixForwardsLoop1:
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Jmp [MixFunctionSeparate]
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EndP MixForwardsLoop
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Proc MixPingPongLoop
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Call [PreMixFunction]
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Call PrepareSampleSegment
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MixPingPongLoopAgain:
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Mov EAX, STEPVALUE ; 16.16 value
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Mul DWord Ptr [MixBlockSize] ; 16.0 value
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; EDX:EAX = 32.16 value
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ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
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; EDX.AX = BytesToMix*StepValue
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Cmp DIRECTIONFLAG, 0
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JNE MixPingPongLoopBackwards1
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MixPingPongLoopForwards1:
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Xor CX, CX
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Mov EBX, LOOPEND
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Sub CX, CURRENTPOSITIONERROR
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SBB EBX, CURRENTPOSITION ; EBX.CX = (End-CurrentPosition)
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JC UpdateMixPingPongLoopForwards1
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Cmp EDX, EBX
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JG MixPingPongLoopForwards3
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JL MixPingPongLoopForwards2
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Cmp AX, CX
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JAE MixPingPongLoopForwards3
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MixPingPongLoopForwards2:
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Jmp [MixFunctionSeparate]
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MixPingPongLoopForwards3:
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Mov EDX, EBX
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Mov AX, CX
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Call [MixFunctionSeparate]
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UpdateMixPingPongLoopForwards1:
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Mov EAX, CURRENTPOSITION
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Mov EBX, LOOPEND
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Xor EDX, EDX
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Sub EAX, EBX
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Sub EBX, LOOPSTART
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JBE MixPingPongError
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Add EBX, EBX
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Div EBX
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ShR EBX, 1
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Cmp EDX, EBX
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JAE MixPingPongLoopForwards4
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Mov DIRECTIONFLAG, 1
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Mov EAX, LOOPEND
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Sub EAX, EDX
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Dec EAX
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Mov CURRENTPOSITION, EAX
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Neg Word Ptr CURRENTPOSITIONERROR
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Jmp MixPingPongLoopNext
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MixPingPongLoopForwards4:
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Sub EDX, EBX
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Add EDX, LOOPSTART
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Mov CURRENTPOSITION, EDX
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Jmp MixPingPongLoopNext
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MixPingPongLoopBackwards1:
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Mov EBX, CURRENTPOSITION
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Mov CX, CURRENTPOSITIONERROR
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Sub CX, 0FFFFh
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SBB EBX, LOOPSTART
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JC UpdateMixPingPongLoopBackwards1
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Cmp EDX, EBX
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JG MixPingPongLoopBackwards3
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JL MixPingPongLoopBackwards2
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Cmp AX, CX
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JAE MixPingPongLoopBackwards3
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MixPingPongLoopBackwards2:
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Call [MixFunctionSeparateBackwards]
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MixPingPongError:
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Ret
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MixPingPongLoopBackwards3:
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Mov EDX, EBX
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Mov AX, CX
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Call [MixFunctionSeparateBackwards]
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UpdateMixPingPongLoopBackwards1:
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Mov EBX, LOOPEND
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Mov EAX, LOOPSTART
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Sub EBX, EAX
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JBE MixPingPongError
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Sub EAX, CURRENTPOSITION
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Xor EDX, EDX
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Add EBX, EBX
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Div EBX
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ShR EBX, 1
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Cmp EDX, EBX
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JAE MixPingPongLoopBackwards4
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Mov DIRECTIONFLAG, 0
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Add EDX, LOOPSTART
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Mov CURRENTPOSITION, EDX
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Neg Word Ptr CURRENTPOSITIONERROR
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Jmp MixPingPongLoopNext
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MixPingPongLoopBackwards4:
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Sub EBX, EDX
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Add EBX, LOOPEND
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Dec EBX
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Mov CURRENTPOSITION, EBX
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MixPingPongLoopNext:
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Cmp MixBlockSize, 0
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JG MixPingPongLoopAgain
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Ret
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EndP MixPingPongLoop
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;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Proc UpdateNoLoop
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Mov EAX, STEPVALUE ; 16.16 value
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Mul DWord Ptr [MixBlockSize] ; 16.0 value
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; EDX:EAX = 32.16 value
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ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
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; EDX.AX = BytesToMix*StepValue
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Add CURRENTPOSITIONERROR, AX
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AdC EDX, CURRENTPOSITION
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Cmp EDX, LOOPEND
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JL UpdateNoLoop1
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UpdateNoLoop2: ; Turn off
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Mov Word Ptr [SI], 200h
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Test Byte Ptr [SI+3Ah], 80h
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JNZ UpdateNoLoop1
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Mov BX, [SI+38h]
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And Byte Ptr [BX], Not 4 ; Signify channel off
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Ret
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UpdateNoLoop1:
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Mov CURRENTPOSITION, EDX
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Ret
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EndP UpdateNoLoop
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|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc UpdateForwardsLoop
|
|||
|
|
|||
|
Mov EAX, STEPVALUE ; 16.16 value
|
|||
|
Mul DWord Ptr [MixBlockSize] ; 16.0 value
|
|||
|
; EDX:EAX = 32.16 value
|
|||
|
ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
|
|||
|
; EDX.AX = BytesToMix*StepValue
|
|||
|
Add CURRENTPOSITIONERROR, AX
|
|||
|
AdC EDX, CURRENTPOSITION
|
|||
|
|
|||
|
Cmp EDX, LOOPEND
|
|||
|
JL UpdateForwardsLoop1
|
|||
|
|
|||
|
UpdateForwardsLoop2: ; Reset position...
|
|||
|
Mov EBX, LOOPEND
|
|||
|
Mov EAX, EDX
|
|||
|
Xor EDX, EDX
|
|||
|
Sub EAX, EBX
|
|||
|
Sub EBX, LOOPSTART
|
|||
|
JZ UpdateForwardsLoop1
|
|||
|
Div EBX
|
|||
|
|
|||
|
Add EDX, LOOPSTART
|
|||
|
|
|||
|
UpdateForwardsLoop1:
|
|||
|
Mov CURRENTPOSITION, EDX
|
|||
|
Ret
|
|||
|
|
|||
|
EndP UpdateForwardsLoop
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc UpdatePingPongLoop
|
|||
|
|
|||
|
Mov EAX, STEPVALUE ; 16.16 value
|
|||
|
Mul DWord Ptr [MixBlockSize] ; 16.0 value
|
|||
|
; EDX:EAX = 32.16 value
|
|||
|
ShLD EDX, EAX, 16 ; EDX.AX = 32.16 value.
|
|||
|
; EDX.AX = BytesToMix*StepValue
|
|||
|
|
|||
|
Cmp DIRECTIONFLAG, 0
|
|||
|
JNE UpdatePingPongLoopBackwards1
|
|||
|
|
|||
|
UpdatePingPongLoopForwards1:
|
|||
|
Add CURRENTPOSITIONERROR, AX
|
|||
|
AdC EDX, CURRENTPOSITION
|
|||
|
|
|||
|
Cmp EDX, LOOPEND
|
|||
|
JA UpdatePingPongLoopForwards2
|
|||
|
|
|||
|
Mov CURRENTPOSITION, EDX
|
|||
|
Ret
|
|||
|
|
|||
|
UpdatePingPongLoopForwards2:
|
|||
|
Mov EAX, EDX
|
|||
|
Mov EBX, LOOPEND
|
|||
|
Xor EDX, EDX
|
|||
|
Sub EAX, EBX
|
|||
|
Sub EBX, LOOPSTART
|
|||
|
Add EBX, EBX
|
|||
|
Div EBX
|
|||
|
|
|||
|
ShR EBX, 1
|
|||
|
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE UpdatePingPongLoopForwards3
|
|||
|
|
|||
|
Mov DIRECTIONFLAG, 1
|
|||
|
Mov EAX, LOOPEND
|
|||
|
Sub EAX, EDX
|
|||
|
Dec EAX
|
|||
|
NEG CURRENTPOSITIONERROR
|
|||
|
Mov CURRENTPOSITION, EAX
|
|||
|
Ret
|
|||
|
|
|||
|
UpdatePingPongLoopForwards3:
|
|||
|
Sub EDX, EBX
|
|||
|
Add EDX, LOOPSTART
|
|||
|
Mov CURRENTPOSITION, EDX
|
|||
|
Ret
|
|||
|
|
|||
|
UpdatePingPongLoopBackwards1:
|
|||
|
Sub CURRENTPOSITIONERROR, AX
|
|||
|
Mov ECX, CURRENTPOSITION
|
|||
|
SBB ECX, EDX
|
|||
|
|
|||
|
Cmp ECX, LOOPSTART
|
|||
|
JLE UpdatePingPongLoopBackwards2
|
|||
|
|
|||
|
Mov CURRENTPOSITION, ECX
|
|||
|
Ret
|
|||
|
|
|||
|
UpdatePingPongLoopBackwards2:
|
|||
|
Mov EAX, LOOPSTART
|
|||
|
Mov EBX, LOOPEND
|
|||
|
Xor EDX, EDX
|
|||
|
Sub EBX, EAX
|
|||
|
Sub EAX, ECX
|
|||
|
Add EBX, EBX
|
|||
|
Div EBX
|
|||
|
|
|||
|
ShR EBX, 1
|
|||
|
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE UpdatePingPongLoopBackwards3
|
|||
|
|
|||
|
Mov DIRECTIONFLAG, 0
|
|||
|
Add EDX, LOOPSTART
|
|||
|
NEG CURRENTPOSITIONERROR
|
|||
|
Mov CURRENTPOSITION, EDX
|
|||
|
Ret
|
|||
|
|
|||
|
UpdatePingPongLoopBackwards3:
|
|||
|
Sub EBX, EDX
|
|||
|
Add EBX, LOOPEND
|
|||
|
Dec EBX
|
|||
|
Mov CURRENTPOSITION, EBX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP UpdatePingPongLoop
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc PrepareSampleSegment ; Sets up sample mixing segment
|
|||
|
|
|||
|
Mov ES, SongDataArea
|
|||
|
|
|||
|
Mov BX, [SI+34h]
|
|||
|
Mov EAX, [ES:BX+48h]
|
|||
|
|
|||
|
Mov DWord Ptr MemoryType, EAX ; Writes numpages & Sample
|
|||
|
; location also.
|
|||
|
Mov LastPage, 0FFFFh
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP PrepareSampleSegment
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc SetSampleSegment ; Given EDI, Returns ES
|
|||
|
|
|||
|
Mov CX, Word Ptr CS:MemoryType
|
|||
|
|
|||
|
Cmp CL, 2
|
|||
|
JNE SetSampleSegment1
|
|||
|
|
|||
|
Push EAX
|
|||
|
Push EDX
|
|||
|
|
|||
|
Mov EBX, EDI
|
|||
|
ShR EBX, 14
|
|||
|
And EDI, 16383
|
|||
|
|
|||
|
Cmp BX, LastPage
|
|||
|
JE SetSampleEMS2
|
|||
|
|
|||
|
Mov LastPage, BX
|
|||
|
Mov DX, SampleLocation ; EMS handle
|
|||
|
; BX = starting page required
|
|||
|
Mov AL, 3
|
|||
|
Add BX, 3
|
|||
|
|
|||
|
Cmp BL, CH
|
|||
|
JBE SetSampleEMS1
|
|||
|
|
|||
|
Sub CH, BL
|
|||
|
Add BL, CH
|
|||
|
Add AL, CH
|
|||
|
JNC SetSampleEMS2
|
|||
|
|
|||
|
SetSampleEMS1:
|
|||
|
Mov AH, 44h
|
|||
|
Int 67h
|
|||
|
|
|||
|
Dec BX
|
|||
|
Dec AL
|
|||
|
JNS SetSampleEMS1
|
|||
|
|
|||
|
SetSampleEMS2:
|
|||
|
Mov ES, EMSPageFrame
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop EAX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
SetSampleSegment1: ; Conventional memory
|
|||
|
Mov ECX, EDI
|
|||
|
And EDI, 15
|
|||
|
ShR ECX, 4
|
|||
|
Add CX, SampleLocation
|
|||
|
Mov ES, CX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP SetSampleSegment
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc SetBackSampleSegment ; Given BX = frame, Returns ES
|
|||
|
|
|||
|
Mov CX, Word Ptr CS:MemoryType
|
|||
|
|
|||
|
Cmp CL, 2
|
|||
|
JNE SetBackSampleSegment1
|
|||
|
|
|||
|
Push EAX
|
|||
|
Push EDX
|
|||
|
|
|||
|
Cmp BX, LastPage
|
|||
|
JE SetBackSampleEMS2
|
|||
|
|
|||
|
Mov LastPage, BX
|
|||
|
Mov DX, SampleLocation ; EMS handle
|
|||
|
; BX = starting page required
|
|||
|
Mov AL, 3
|
|||
|
Add BX, 3
|
|||
|
|
|||
|
Cmp BL, CH
|
|||
|
JBE SetBackSampleEMS1
|
|||
|
|
|||
|
Sub CH, BL
|
|||
|
Add BL, CH
|
|||
|
Add AL, CH
|
|||
|
JNC SetBackSampleEMS2
|
|||
|
|
|||
|
SetBackSampleEMS1:
|
|||
|
Mov AH, 44h
|
|||
|
Int 67h
|
|||
|
|
|||
|
Dec BX
|
|||
|
Dec AL
|
|||
|
JNS SetBackSampleEMS1
|
|||
|
|
|||
|
SetBackSampleEMS2:
|
|||
|
Mov ES, EMSPageFrame
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop EAX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
SetBackSampleSegment1: ; Conventional memory
|
|||
|
ShL BX, 10
|
|||
|
Add BX, SampleLocation
|
|||
|
Mov ES, BX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP SetBackSampleSegment
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc MFS8Bit ; EDX:AX = 32.16 bytes offset.
|
|||
|
; to mix
|
|||
|
|
|||
|
|
|||
|
Push AX
|
|||
|
Push EDX
|
|||
|
|
|||
|
Mov EDI, CURRENTPOSITION
|
|||
|
Call SetSampleSegment
|
|||
|
|
|||
|
Xor CX, CX ; EDI = CurrentPosition & (2^14-1)
|
|||
|
|
|||
|
Mov EBX, 0FFFEh
|
|||
|
|
|||
|
Sub CX, CURRENTPOSITIONERROR
|
|||
|
SBB EBX, EDI
|
|||
|
; EBX:CX = 64k-(CurrentPosition & (2^14-1))
|
|||
|
; EDX:AX = blocksize
|
|||
|
Cmp EDX, EBX
|
|||
|
JBE MFS8Bit1
|
|||
|
|
|||
|
Mov EDX, EBX
|
|||
|
Mov AX, CX
|
|||
|
|
|||
|
MFS8Bit1:
|
|||
|
; Now to calculate bytes to mix...
|
|||
|
ShL EAX, 16
|
|||
|
SHRD EAX, EDX, 16
|
|||
|
ShR EDX, 16 ; EDX:EAX = (16)32.16 offset
|
|||
|
|
|||
|
Mov EBX, STEPVALUE
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE MFS8Bit2
|
|||
|
|
|||
|
Div EBX
|
|||
|
Add EDX, 0FFFFFFFFh
|
|||
|
AdC EAX, 0 ; EAX = no of bytes to mix
|
|||
|
JZ MFS8Bit2
|
|||
|
|
|||
|
Push EAX
|
|||
|
|
|||
|
Xor ECX, ECX
|
|||
|
Mov DELTAOFFSET, [SI+4] ; Stepvalue
|
|||
|
Mov DELTAERROR, [SI+2] ; Stepvalue
|
|||
|
Mov CX, CURRENTPOSITIONERROR
|
|||
|
|
|||
|
Push DS
|
|||
|
Push SI
|
|||
|
|
|||
|
Mov SI, MixBufferOffset
|
|||
|
Mov DS, MixSegment
|
|||
|
Call [MixFunction]
|
|||
|
|
|||
|
Pop SI
|
|||
|
Pop DS
|
|||
|
Pop ECX
|
|||
|
Jmp MFS8Bit3
|
|||
|
|
|||
|
MFS8Bit2:
|
|||
|
; Xor ECX, ECX
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
MFS8Bit3:
|
|||
|
; Update pointers...
|
|||
|
Mov EAX, STEPVALUE
|
|||
|
Mul ECX
|
|||
|
|
|||
|
Sub MixBlockSize, CX
|
|||
|
ShL CX, RESOLUTIONSHIFT
|
|||
|
Add MixBufferOffset, CX
|
|||
|
|
|||
|
; EDX:EAX = offset mixed (32.16)
|
|||
|
ShLD EDX, EAX, 16
|
|||
|
Mov BX, AX
|
|||
|
Mov ECX, EDX ; ECX:BX = offset mixed
|
|||
|
|
|||
|
Add CURRENTPOSITIONERROR, BX
|
|||
|
AdC CURRENTPOSITION, ECX
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
|
|||
|
Sub AX, BX
|
|||
|
SBB EDX, ECX
|
|||
|
|
|||
|
JG MFS8Bit
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP MFS8Bit
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc MFS16Bit
|
|||
|
|
|||
|
Push AX
|
|||
|
Push EDX
|
|||
|
|
|||
|
Mov EDI, CURRENTPOSITION
|
|||
|
Add EDI, EDI
|
|||
|
Call SetSampleSegment
|
|||
|
|
|||
|
ShR EDI, 1 ; EDI = number of samples.
|
|||
|
|
|||
|
Xor CX, CX
|
|||
|
|
|||
|
Mov EBX, 7FFEh
|
|||
|
|
|||
|
Sub CX, CURRENTPOSITIONERROR
|
|||
|
SBB EBX, EDI
|
|||
|
|
|||
|
Cmp EDX, EBX
|
|||
|
JBE MFS16Bit1
|
|||
|
|
|||
|
Mov EDX, EBX
|
|||
|
Mov AX, CX
|
|||
|
|
|||
|
MFS16Bit1:
|
|||
|
; Now to calculate bytes to mix...
|
|||
|
ShL EAX, 16
|
|||
|
SHRD EAX, EDX, 16
|
|||
|
ShR EDX, 16 ; EDX:EAX = (16)32.16 offset
|
|||
|
|
|||
|
Mov EBX, STEPVALUE
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE MFS16Bit2
|
|||
|
|
|||
|
Div EBX
|
|||
|
Add EDX, 0FFFFFFFFh
|
|||
|
AdC EAX, 0 ; EAX = no of bytes to mix
|
|||
|
JZ MFS16Bit2
|
|||
|
|
|||
|
Push EAX
|
|||
|
|
|||
|
Xor ECX, ECX
|
|||
|
Mov DELTAOFFSET, [SI+4] ; Stepvalue
|
|||
|
Mov DELTAERROR, [SI+2] ; Stepvalue
|
|||
|
Mov CX, CURRENTPOSITIONERROR
|
|||
|
|
|||
|
Push DS
|
|||
|
Push SI
|
|||
|
|
|||
|
Mov SI, MixBufferOffset
|
|||
|
Mov DS, MixSegment
|
|||
|
Call [MixFunction]
|
|||
|
|
|||
|
Pop SI
|
|||
|
Pop DS
|
|||
|
Pop ECX
|
|||
|
Jmp MFS16Bit3
|
|||
|
|
|||
|
MFS16Bit2:
|
|||
|
; Xor ECX, ECX
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
Ret
|
|||
|
|
|||
|
MFS16Bit3:
|
|||
|
; Update pointers...
|
|||
|
Mov EAX, STEPVALUE
|
|||
|
Mul ECX
|
|||
|
|
|||
|
Sub MixBlockSize, CX
|
|||
|
ShL CX, RESOLUTIONSHIFT
|
|||
|
Add MixBufferOffset, CX
|
|||
|
|
|||
|
; EDX:EAX = offset mixed (32.16)
|
|||
|
ShLD EDX, EAX, 16
|
|||
|
Mov BX, AX
|
|||
|
Mov ECX, EDX ; ECX:BX = offset mixed
|
|||
|
|
|||
|
Add CURRENTPOSITIONERROR, BX
|
|||
|
AdC CURRENTPOSITION, ECX
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
|
|||
|
Sub AX, BX
|
|||
|
SBB EDX, ECX
|
|||
|
|
|||
|
JG MFS16Bit
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP MFS16Bit
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc MBS8Bit
|
|||
|
|
|||
|
Push AX
|
|||
|
Push EDX ; EDX:AX = 32.16 blocksize
|
|||
|
|
|||
|
Mov EDI, CURRENTPOSITION
|
|||
|
Mov EBX, EDI
|
|||
|
Add EBX, 2
|
|||
|
ShR EBX, 14 ; BX = frame
|
|||
|
|
|||
|
Sub BX, 3
|
|||
|
JNC MBS8Bit4
|
|||
|
|
|||
|
Xor BX, BX
|
|||
|
|
|||
|
MBS8Bit4:
|
|||
|
Mov ECX, EBX
|
|||
|
ShL ECX, 14
|
|||
|
Sub EDI, ECX
|
|||
|
|
|||
|
Call SetBackSampleSegment
|
|||
|
|
|||
|
Mov ECX, CURRENTPOSITION
|
|||
|
Mov BX, CURRENTPOSITIONERROR
|
|||
|
And ECX, 16383
|
|||
|
Add ECX, 0BFFEh
|
|||
|
Cmp ECX, EDX
|
|||
|
JG MBS8Bit1
|
|||
|
JL MBS8Bit5
|
|||
|
Cmp BX, AX
|
|||
|
JG MBS8Bit1
|
|||
|
|
|||
|
MBS8Bit5:
|
|||
|
Mov EDX, ECX
|
|||
|
Mov AX, BX
|
|||
|
|
|||
|
MBS8Bit1:
|
|||
|
|
|||
|
; Now to calculate bytes to mix...
|
|||
|
ShL EAX, 16
|
|||
|
SHRD EAX, EDX, 16
|
|||
|
ShR EDX, 16 ; EDX:EAX = (16)32.16 offset
|
|||
|
|
|||
|
Mov EBX, STEPVALUE
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE MBS8Bit2
|
|||
|
|
|||
|
Div EBX
|
|||
|
Add EDX, 0FFFFFFFFh
|
|||
|
AdC EAX, 0 ; EAX = no of bytes to mix
|
|||
|
JZ MBS8Bit2
|
|||
|
|
|||
|
Push EAX
|
|||
|
|
|||
|
Xor ECX, ECX
|
|||
|
Mov EBP, [SI+2] ; Stepvalue
|
|||
|
Neg EBP
|
|||
|
ShLD EDX, EBP, 16
|
|||
|
|
|||
|
Mov CX, CURRENTPOSITIONERROR
|
|||
|
|
|||
|
Push DS
|
|||
|
Push SI
|
|||
|
|
|||
|
Mov SI, MixBufferOffset
|
|||
|
Mov DS, MixSegment
|
|||
|
Call [MixFunction]
|
|||
|
|
|||
|
Pop SI
|
|||
|
Pop DS
|
|||
|
Pop ECX
|
|||
|
Jmp MBS8Bit3
|
|||
|
|
|||
|
MBS8Bit2:
|
|||
|
; Xor ECX, ECX
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
Ret
|
|||
|
|
|||
|
MBS8Bit3:
|
|||
|
; Update pointers...
|
|||
|
Mov EAX, STEPVALUE
|
|||
|
Mul ECX
|
|||
|
|
|||
|
Sub MixBlockSize, CX
|
|||
|
ShL CX, RESOLUTIONSHIFT
|
|||
|
Add MixBufferOffset, CX
|
|||
|
|
|||
|
; EDX:EAX = offset mixed (32.16)
|
|||
|
ShLD EDX, EAX, 16
|
|||
|
Mov BX, AX
|
|||
|
Mov ECX, EDX ; ECX:BX = offset mixed
|
|||
|
|
|||
|
Sub CURRENTPOSITIONERROR, BX
|
|||
|
SBB CURRENTPOSITION, ECX
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
|
|||
|
Sub AX, BX
|
|||
|
SBB EDX, ECX
|
|||
|
|
|||
|
JG MBS8Bit
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP MBS8Bit
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc MBS16Bit
|
|||
|
|
|||
|
Push AX
|
|||
|
Push EDX ; EDX:AX = 32.16 blocksize
|
|||
|
|
|||
|
Mov EDI, CURRENTPOSITION
|
|||
|
Mov EBX, EDI
|
|||
|
Add EBX, 4
|
|||
|
ShR EBX, 13 ; BX = frame
|
|||
|
|
|||
|
Sub BX, 3
|
|||
|
JNC MBS16Bit4
|
|||
|
|
|||
|
Xor BX, BX
|
|||
|
|
|||
|
MBS16Bit4:
|
|||
|
Mov ECX, EBX
|
|||
|
ShL ECX, 13
|
|||
|
Sub EDI, ECX
|
|||
|
|
|||
|
Call SetBackSampleSegment
|
|||
|
|
|||
|
Mov ECX, CURRENTPOSITION
|
|||
|
Mov BX, CURRENTPOSITIONERROR
|
|||
|
And ECX, 8191
|
|||
|
Add ECX, 05FFEh
|
|||
|
Cmp ECX, EDX
|
|||
|
JG MBS16Bit1
|
|||
|
JL MBS16Bit5
|
|||
|
Cmp BX, AX
|
|||
|
JG MBS16Bit1
|
|||
|
|
|||
|
MBS16Bit5:
|
|||
|
Mov EDX, ECX
|
|||
|
Mov AX, BX
|
|||
|
|
|||
|
MBS16Bit1:
|
|||
|
|
|||
|
; Now to calculate bytes to mix...
|
|||
|
ShL EAX, 16
|
|||
|
SHRD EAX, EDX, 16
|
|||
|
ShR EDX, 16 ; EDX:EAX = (16)32.16 offset
|
|||
|
|
|||
|
Mov EBX, STEPVALUE
|
|||
|
Cmp EDX, EBX
|
|||
|
JAE MBS16Bit2
|
|||
|
|
|||
|
Div EBX
|
|||
|
Add EDX, 0FFFFFFFFh
|
|||
|
AdC EAX, 0 ; EAX = no of bytes to mix
|
|||
|
JZ MBS16Bit2
|
|||
|
|
|||
|
Push EAX
|
|||
|
|
|||
|
Xor ECX, ECX
|
|||
|
Mov EBP, [SI+2] ; Stepvalue
|
|||
|
Neg EBP
|
|||
|
ShLD EDX, EBP, 16
|
|||
|
|
|||
|
Mov CX, CURRENTPOSITIONERROR
|
|||
|
|
|||
|
Push DS
|
|||
|
Push SI
|
|||
|
|
|||
|
Mov SI, MixBufferOffset
|
|||
|
Mov DS, MixSegment
|
|||
|
Call [MixFunction]
|
|||
|
|
|||
|
Pop SI
|
|||
|
Pop DS
|
|||
|
Pop ECX
|
|||
|
Jmp MBS16Bit3
|
|||
|
|
|||
|
MBS16Bit2:
|
|||
|
; Xor ECX, ECX
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
Ret
|
|||
|
|
|||
|
MBS16Bit3:
|
|||
|
; Update pointers...
|
|||
|
Mov EAX, STEPVALUE
|
|||
|
Mul ECX
|
|||
|
|
|||
|
Sub MixBlockSize, CX
|
|||
|
ShL CX, RESOLUTIONSHIFT
|
|||
|
Add MixBufferOffset, CX
|
|||
|
|
|||
|
; EDX:EAX = offset mixed (32.16)
|
|||
|
ShLD EDX, EAX, 16
|
|||
|
Mov BX, AX
|
|||
|
Mov ECX, EDX ; ECX:BX = offset mixed
|
|||
|
|
|||
|
Sub CURRENTPOSITIONERROR, BX
|
|||
|
SBB CURRENTPOSITION, ECX
|
|||
|
|
|||
|
Pop EDX
|
|||
|
Pop AX
|
|||
|
|
|||
|
Sub AX, BX
|
|||
|
SBB EDX, ECX
|
|||
|
|
|||
|
JG MBS16Bit
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP MBS16Bit
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
Proc ReportError
|
|||
|
|
|||
|
Ret
|
|||
|
|
|||
|
EndP ReportError
|
|||
|
|
|||
|
;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|