idct_ap922_sse2.asm

由bmp生成mpeg2 的I_frame 数据

                psrad      xmm0, 11
                paddd      xmm5, xmm6
                packssdw   xmm0, xmm2
                paddd      xmm4, xmm7
                movdqa     xmm6, xmm5
                psubd      xmm6, xmm4
                psrad      xmm6, 11
                paddd      xmm4, xmm5
                psrad      xmm4, 11
                pshufd     xmm6, xmm6, 01Bh
                packssdw   xmm4, xmm6
                movdqa     [esi+4*16], xmm0
                movdqa     [esi+6*16], xmm4
                ; row 3, row 1
                movdqa     xmm0, [esi+3*16]
                lea        eax, table_35
                movdqa     xmm4, [esi+1*16]
                lea        ebx, table_17
                pshuflw    xmm0, xmm0, 0D8h 
                pshufhw    xmm0, xmm0, 0D8h
                pshufd     xmm3, xmm0, 055h
                pshufd     xmm1, xmm0, 0
                pshufd     xmm2, xmm0, 0AAh
                pshufd     xmm0, xmm0, 0FFh
                pmaddwd    xmm1, [eax]
                pmaddwd    xmm2, [eax+16]
                pmaddwd    xmm3, [eax+32]
                pmaddwd    xmm0, [eax+48]
                paddd      xmm0, xmm3
                pshuflw    xmm4, xmm4, 0D8h
                pshufhw    xmm4, xmm4, 0D8h
                movdqa     xmm7, half11
                paddd      xmm1, xmm7
                pshufd     xmm6, xmm4, 0AAh
                pshufd     xmm5, xmm4, 0
                pmaddwd    xmm5, [ebx]
                paddd      xmm5, xmm7
                pmaddwd    xmm6, [ebx+16]
                pshufd     xmm7, xmm4, 055h
                pmaddwd    xmm7, [ebx+32]
                pshufd     xmm4, xmm4, 0FFh
                pmaddwd    xmm4, [ebx+48]
                paddd      xmm1, xmm2
                movdqa     xmm2, xmm1
                psubd      xmm2, xmm0
                psrad      xmm2, 11
                pshufd     xmm2, xmm2, 01Bh
                paddd      xmm0, xmm1
                psrad      xmm0, 11
                paddd      xmm5, xmm6
                packssdw   xmm0, xmm2
                paddd      xmm4, xmm7
                movdqa     xmm6, xmm5
                psubd      xmm6, xmm4
                psrad      xmm6, 11
                paddd      xmm4, xmm5
                psrad      xmm4, 11
                pshufd     xmm6, xmm6, 01Bh
                packssdw   xmm4, xmm6
                movdqa     [esi+3*16], xmm0
                movdqa     [esi+1*16], xmm4
                ; row 5, row 7
                movdqa     xmm0, [esi+5*16]
                movdqa     xmm4, [esi+7*16]
                pshuflw    xmm0, xmm0, 0D8h 
                pshufhw    xmm0, xmm0, 0D8h
                pshufd     xmm3, xmm0, 055h
                pshufd     xmm1, xmm0, 0
                pshufd     xmm2, xmm0, 0AAh
                pshufd     xmm0, xmm0, 0FFh
                pmaddwd    xmm1, [eax]
                pmaddwd    xmm2, [eax+16]
                pmaddwd    xmm3, [eax+32]
                pmaddwd    xmm0, [eax+48]
                paddd      xmm0, xmm3
                pshuflw    xmm4, xmm4, 0D8h
                pshufhw    xmm4, xmm4, 0D8h
                movdqa     xmm7, half11
                paddd      xmm1, xmm7
                pshufd     xmm6, xmm4, 0AAh
                pshufd     xmm5, xmm4, 0
                pmaddwd    xmm5, [ebx]
                paddd      xmm5, xmm7
                pmaddwd    xmm6, [ebx+16]
                pshufd     xmm7, xmm4, 055h
                pmaddwd    xmm7, [ebx+32]
                pshufd     xmm4, xmm4, 0FFh
                pmaddwd    xmm4, [ebx+48]
                paddd      xmm1, xmm2
                movdqa     xmm2, xmm1
                psubd      xmm2, xmm0
                psrad      xmm2, 11
                pshufd     xmm2, xmm2, 01Bh
                paddd      xmm0, xmm1
                psrad      xmm0, 11
                paddd      xmm5, xmm6
                packssdw   xmm0, xmm2
                paddd      xmm4, xmm7
                movdqa     xmm6, xmm5
                psubd      xmm6, xmm4
                psrad      xmm6, 11
                paddd      xmm4, xmm5
                psrad      xmm4, 11
                pshufd     xmm6, xmm6, 01Bh
                packssdw   xmm4, xmm6
                ; col 0-7
                movdqa     xmm6, xmm4			
                movdqa     xmm2, xmm0			
                movdqa     xmm3, [esi+3*16]
                movdqa     xmm1, tan_3
                pmulhw     xmm0, xmm1			
                movdqa     xmm5, tan_1
                pmulhw     xmm1, xmm3			
                paddsw     xmm1, xmm3			
                pmulhw     xmm4, xmm5			
                movdqa     xmm7, [esi+6*16]
                pmulhw     xmm5, [esi+1*16]		
                psubsw     xmm5, xmm6			
                movdqa     xmm6, xmm5			
                paddsw     xmm4, [esi+1*16]		
                paddsw     xmm0, xmm2			
                paddsw     xmm0, xmm3			
                psubsw     xmm2, xmm1			
                movdqa     xmm1, xmm0			
                movdqa     xmm3, tan_2
                pmulhw     xmm7, xmm3			
                pmulhw     xmm3, [esi+2*16]		
                paddsw     xmm0, xmm4			
                psubsw     xmm4, xmm1			
                paddsw     xmm0, one
                movdqa     [esi+7*16],  xmm0		
                psubsw     xmm5, xmm2			
                paddsw     xmm5, one
                paddsw     xmm6, xmm2			
                movdqa     [esi+3*16],  xmm6		
                movdqa     xmm1, xmm4			
                movdqa     xmm0, cos_4
                movdqa     xmm2, xmm0			
                paddsw     xmm4, xmm5			
                psubsw     xmm1, xmm5			
                paddsw     xmm7, [esi+2*16]		
                psubsw     xmm3, [esi+6*16]		
                movdqa     xmm6, [esi]			
                pmulhw     xmm0, xmm1			
                movdqa     xmm5, [esi+4*16]		
                paddsw     xmm5, xmm6			
                psubsw     xmm6, [esi+4*16]		
                pmulhw     xmm2, xmm4			
                paddsw     xmm4, xmm2			
                movdqa     xmm2, xmm5			
                psubsw     xmm2, xmm7			
                por        xmm4, one
                paddsw     xmm0, xmm1			
                por        xmm0, one
                paddsw     xmm5, xmm7			
                paddsw     xmm5, half06
                movdqa     xmm1, xmm6			
                movdqa     xmm7, [esi+7*16]		
                paddsw     xmm7, xmm5			
                psraw      xmm7, 6
                movdqa     [esi], xmm7			
                paddsw     xmm6, xmm3			
                paddsw     xmm6, half06
                psubsw     xmm1, xmm3			
                paddsw     xmm1, half06a
                movdqa     xmm7, xmm1			
                movdqa     xmm3, xmm6			
                paddsw     xmm6, xmm4			
                paddsw     xmm2, half06a
                psraw      xmm6, 6
                movdqa     [esi+1*16], xmm6		
                paddsw     xmm1, xmm0			
                psraw      xmm1, 6
                movdqa     [esi+2*16], xmm1
                movdqa     xmm1, [esi+3*16] 		
                movdqa     xmm6, xmm1           		
                psubsw     xmm7, xmm0			
                psraw      xmm7, 6
                movdqa     [esi+5*16],  xmm7		
                psubsw     xmm5, [esi+7*16]		
                psraw      xmm5, 6
                movdqa     [esi+7*16], xmm5		
                psubsw     xmm3, xmm4			
                paddsw     xmm6, xmm2			
                psubsw     xmm2, xmm1			
                psraw      xmm6, 6
                movdqa     [esi+3*16],  xmm6		
                psraw      xmm2, 6
                movdqa     [esi+4*16],  xmm2		
                psraw      xmm3, 6
                movdqa     [esi+6*16],  xmm3		
;-------------------------------------------------------------------
; 屻巒枛
                pop        ebx
                pop        eax
                pop        esi

                ret        4
;-------------------------------------------------------------------
_idct_ap922_sse2@4 ENDP
;-------------------------------------------------------------------
; 廔椆

END