yuvammx.asm

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

    ;;
    mov ecx, dy
    mov eax, dst_pitch

    packuswb    mm2, mm3        ;; blended y24 y23 y22 y21 y14 y13 y12 y11 

    psllq   mm5, 8              ;;  v2 0 v1 0 v2 0 v1 0
    por mm1, mm5                ;;  v22 u22 v21 u21 v12 u12 v11 u11
    
    movq    mm3, mm1
    punpcklbw   mm1, mm2        ;;  y14 v12 y13 u12 y12 v11 y11 u11 

    movq    [ecx], mm1          ;; line 1 result

    punpckhbw   mm3, mm2        ;;  y24 v22 y23 u22 y22 v21 y21 u21

    movq    [ecx+eax], mm3      ;; line 2 result

    add ecx, 8                  ;; inc dy address
    mov dy, ecx

    mov eax, width0             ;; pel loop
    sub eax, 4
    mov width0, eax
    jg  near a100


;;------------------------------
two_pels:
    ;; do two pels if any
    ;; remaining pels = eax+3
    ;; compute 2 pels if remaining pels = 2 or 3, 1 not computed
    add eax, 2
    jle near line_done
    ;;
    ;;
    mov ecx, yuvaoffseta    
    mov eax, src_pitch
    ;; ------- first line --------
    ;; yuva 2 y's
    movd    mm0, [esi]          ;; p2 p1
    punpcklbw   mm0, mm7        ;; word p2 p1 

    ;; src I420 2 y's
    movq    mm2, [edi]          ;; q2 q1
    punpcklbw mm2, mm7          ;; word q2 q1 
    psubw   mm2, mm0            ;; q-p

    ;; yuva 2 a's
    movd    mm4, [esi+ecx]      ;; a2 a1
    punpcklbw mm4, mm7          ;; word a2 a1

    pmullw  mm2, mm4            ;; word alpha*(q-p)  for y2 y1
    psrlw   mm2, 8              ;; byte alpha*(q-p)  for 0 y2 0 y1
    paddb   mm2, mm0            ;; blended for 0 y2 0 y1

    pmaddwd mm4, mm6           ;; line 1 dword a2+a1
    ;; 
    ;;   mm2 = line 1 blended for 0 y2 0 y1
    ;;   mm4 = line 1 ave(a2,a1)
    ;;
    ;; ------ second line ---------
    mov ebp, negyuvapitch
    sub esi, ebp            ;; point to line 2

    ;; yuva 2 y's
    movd    mm1, [esi]          ;; p2 p1
    punpcklbw   mm1, mm7        ;; word p2 p1 

    ;; src I420 2 y's
    movd    mm3, [edi+eax]          ;; q2 q1
    punpcklbw mm3, mm7          ;; word q2 q1 
    psubw   mm3, mm1            ;; q-p

    ;; yuva 2 a's
    ;;movd    mm5, [esi+ecx]      ;; a2 a1
    movzx   eax, word [esi+ecx]     ;; prevent possible access vio
    movd    mm5, eax            ;; a2 a1
    punpcklbw mm5, mm7          ;; word a2 a1

    lea esi, [esi+ebp]        ;; back to line 1,  no inc
    ;;add edi, 4                  ;; inc sy

    pmullw  mm3, mm5            ;; word alpha*(q-p)  for y2 y1
    psrlw   mm3, 8              ;; byte alpha*(q-p)  for 0 y2 0 y1
    paddb   mm3, mm1            ;; blended for 0 y2 0 y1

    pmaddwd mm5, mm6           ;; line 2 dword a2+a1
    ;; 
    packssdw    mm4, mm5        ;; for uv sum xx a21 xx a11
    psrlw   mm4, 1              ;; for uv ave xx a21 xx a11
    ;;
    ;;   mm2 = line 1 blended for 0 y2 0 y1
    ;;   mm3 = line 2 blended for 0 y2 0 y1
    ;;   mm4 = ave =  a21 a11
    ;;
    ;; ----- U V --------
    mov ecx, yuvaoffsetv
    mov eax, soffsetv

    ;; --U--
    ;;movd    mm0, [ebx]          ;; x x x pu1
    ;;punpcklwd    mm0, mm0       ;; byte x pu1 x pu1
    ;;punpcklbw    mm0, mm7       ;; word x pu1 x pu1
    movzx ebp, byte [ebx]
    movd    mm0, ebp                ;; 0 0 0 pu1
    punpckldq   mm0, mm0            ;; word 0 pu1 0 pu1

    ;;movd    mm1, [edx]          ;; x x qu2 qu1
    ;;punpcklwd    mm1, mm1       ;; byte qu2 qu1 qu2 qu1
    ;;punpcklbw    mm1, mm7       ;; word qu2 qu1 qu2 qu1
    movzx   ebp, byte [edx]
    movd    mm1, ebp                ;; 0 0 0 qu1          
    punpckldq   mm1, mm1            ;; word 0 qu1 0 qu1   
    
    psubw   mm1, mm0            ;; qu - pu
    pmullw  mm1, mm4            ;; alpha*(qu-pu)
    psrlw   mm1, 8
    paddb   mm1, mm0            ;; line 2 line 1 blended u2 u1 u2 u1 

    ;; --V--
    ;;movd    mm0, [ebx+ecx]          ;; x x pv2 pv1
    movzx   ebp, byte [ebx+ecx]     ;; prevent possible access vio
    movd    mm0, ebp            ;; 0 0 0 pv1
    punpckldq    mm0, mm0       ;; word 0 pv1 0 pv1

    ;;movd    mm5, [edx+eax]            ;; qv1
    movzx   eax, byte [edx+eax]     ;; prevent possible access vio
    movd    mm5, eax            ;;  0 0 0 qv1
    punpckldq    mm5, mm5       ;; word 0 qv1 0 qv1

    psubw   mm5, mm0            ;; qv - pv

    ;;add ebx, 2                  ;; inc yuvau address
    ;;add edx, 2                  ;; inc su address

    pmullw  mm5, mm4            ;; alpha*(qv-pv)
    psrlw   mm5, 8
    paddb   mm5, mm0            ;; line 2 line 1 blended v2 v1 v2 v1 

    ;;   mm2 = line 1 blended for 0 y2 0 y1
    ;;   mm3 = line 2 blended for 0 y2 0 y1
    ;;   mm1 = line 2 line 1 blended 0 u2 0 u1 
    ;;   mm5 = line 2 line 1 blended 0 v2 0 v1 
    ;;
    mov ecx, dy
    mov eax, dst_pitch

    packuswb    mm2, mm3        ;; x x y22 y21 x x y12 y11

    psllq   mm5, 8              ;;  v2 0 v1 0 v2 0 v1 0
    por mm1, mm5                ;;  v22 u22 v21 u21 v12 u12 v11 u11
    
    movq    mm3, mm1
    punpcklbw   mm1, mm2        ;;  v11 y12 u11 y11
    movd    [ecx], mm1          ;; line 1 result

    punpckhbw   mm3, mm2        ;;  v21 y22 u21 y21 

    movd    [ecx+eax], mm3      ;; line 2 result

;;-----------
;; line loop
line_done:

    mov eax, yuvayinc      ;; move down two lines
    add esi, eax
    
    mov eax, yuvauvinc
    add ebx, eax
    
    mov eax, syinc
    add edi, eax

    mov eax, suvinc
    add edx, eax
    
    mov eax, dyinc
    mov ecx, dy
    add ecx, eax
    mov dy,  ecx

    mov eax, height
    sub eax, 2
    mov height, eax
    jg  near y100
;;-----------
exit:

    xor eax, eax    ;; return success

    add esp, ntmps*4
    pop ebx
    pop ecx
    pop edi
    pop esi
    pop ebp

    emms

    ret

;_I420andYUVAtoUYVY_MMX endp
;====================================
;====================================
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;int I420andI420toI420 (
;;  unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
;;  unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
;;  unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
;;  int alpha)
;;
;;
;;  src2 = top
;;  inverted alpha
;;  uv size computed as: uvpitch*uvlines = (pitch/2)*(lines/2)
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
_I420andI420toI420_MMX_sub:
;;
;; int I420andI420toI420_MMX_sub(
;;  unsigned char *src1_ptr, int src1_pels,   int src1_lines,  int src1_pitch,
;;             int src1_startx, int src1_starty,
;;  unsigned char *src2_ptr, int src2_pels,   int src2_lines,  int src2_pitch,
;;             int src2_startx, int src2_starty,
;;  unsigned char *dest_ptr, int dest_pels,   int dest_lines,  int dest_pitch,
;;             int dest_startx, int dest_starty,
;;  int width,  int height,  int alpha );
;;
make_labels _I420andI420toI420_MMX_sub
;;
;; arguments
%define src            dword [esp+4*(1+npush)]
%define src_pels       dword [esp+4*(2+npush)]
%define src_lines      dword [esp+4*(3+npush)]
%define src_pitch      dword [esp+4*(4+npush)]
%define src_startx     dword [esp+4*(5+npush)]
%define src_starty     dword [esp+4*(6+npush)]

%define top            dword [esp+4*(7+npush)]
%define top_pels       dword [esp+4*(8+npush)]
%define top_lines      dword [esp+4*(9+npush)]
%define top_pitch      dword [esp+4*(10+npush)]
%define top_startx     dword [esp+4*(11+npush)]
%define top_starty     dword [esp+4*(12+npush)]

%define dst            dword [esp+4*(13+npush)]
%define dst_pels       dword [esp+4*(14+npush)]
%define dst_lines      dword [esp+4*(15+npush)]
%define dst_pitch      dword [esp+4*(16+npush)]
%define dst_startx     dword [esp+4*(17+npush)]
%define dst_starty     dword [esp+4*(18+npush)]

%define width          dword [esp+4*(19+npush)]
%define height         dword [esp+4*(20+npush)]

%define alpha          dword [esp+4*(21+npush)]


    push    ebp
    push    esi
    push    edi
    push    ecx
    push    ebx

;; tmp on stack
%assign ntmps 16
%assign npush (5+ntmps)
    sub esp, ntmps*4 


;; cycle through pointers to y then u the v indexed by ecx
;; structure below must agree
%define topptr       dword [esp + 0*4 + ecx*4]   ;; topy[ecx*4]
%define sptr         dword [esp + 4*4 + ecx*4]   ;; sy[ecx*4]
%define dptr         dword [esp + 8*4 + ecx*4]   ;; dy[ecx*4]
;; 
%define topy         dword [esp + 0*4]
%define topu         dword [esp + 1*4]
%define topv         dword [esp + 2*4]
%define toppitch     dword [esp + 3*4]

%define sy           dword [esp + 4*4]
%define su           dword [esp + 5*4]
%define sv           dword [esp + 6*4]
%define spitch       dword [esp + 7*4]

%define dy           dword [esp + 8*4]
%define du           dword [esp + 9*4]
%define dv           dword [esp + 10*4]
%define dpitch       dword [esp + 11*4]

%define lines        dword [esp + 12*4]
%define pels         dword [esp + 13*4]

%define dtmp0        dword [esp + 14*4]
%define dtmp1        dword [esp + 15*4]
%define btmp0(x)     byte [esp + 14*4 + x]
%define btmp1(x)     byte [esp + 15*4 + x]


;;-----
    mov eax, dst_lines
    mov ecx, dst_pitch
    mov dpitch, ecx
    mov edx, eax
    imul    eax, ecx        ;; pitch*lines
    mov esi, dst
    mov dy, esi
    add esi, eax
    mov du, esi

    shr edx, 1              ;; lines/2  = uv lines
    shr ecx, 1              ;; pitch/2  = uvpitch
    imul    edx, ecx        ;; 

    add esi, edx
    mov dv, esi
;;-----
    mov eax, src_lines
    mov ecx, src_pitch
    mov spitch, ecx
    mov edx, eax
    imul    eax, ecx        ;; pitch*lines
    mov esi, src
    mov sy, esi
    add esi, eax
    mov su, esi

    shr edx, 1              ;; lines/2  = uv lines
    shr ecx, 1              ;; pitch/2  = uvpitch
    imul    edx, ecx        ;; 

    add esi, edx
    mov sv, esi
;;-----
    mov eax, top_lines
    mov ecx, top_pitch
    mov toppitch, ecx
    mov edx, eax
    imul    eax, ecx        ;; pitch*lines
    mov esi, top
    mov topy, esi
    add esi, eax
    mov topu, esi

    shr edx, 1              ;; lines/2  = uv lines
    shr ecx, 1              ;; pitch/2  = uvpitch
    imul    edx, ecx        ;; 

    add esi, edx
    mov topv, esi
;;-----
    mov eax, height
    mov lines, eax
    mov eax, width
    mov pels, eax

;;------------------
;;------------------
;; pointer adjustment to (x,y)
    mov ecx, top_pitch
    mov eax, top_starty
    mov edx, eax
    mov ebx, top_startx
    imul    eax, ecx        ;; y*pitch
    mov esi, topy             ;;
    add esi, eax            ;;  sy + y*pitch
    add esi, ebx            ;;  sy + y*pitch + x
    mov topy, esi

    shr ecx, 1          ;; pitch/2
    shr edx, 1          ;; y/2
    imul    edx, ecx    ;; (y/2)*(pitch/2)
    shr ebx, 1          ;; x/2
    add edx, ebx        ;; (y/2)*(pitch/2) + x/2

    mov esi, topu             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov topu, esi

    mov esi, topv             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov topv, esi
;;
;; pointer adjustment to (x,y)
    mov ecx, src_pitch
    mov eax, src_starty
    mov edx, eax
    mov ebx, src_startx
    imul    eax, ecx        ;; y*pitch
    mov esi, sy             ;;
    add esi, eax            ;;  sy + y*pitch
    add esi, ebx            ;;  sy + y*pitch + x
    mov sy, esi

    shr ecx, 1          ;; pitch/2
    shr edx, 1          ;; y/2
    imul    edx, ecx    ;; (y/2)*(pitch/2)
    shr ebx, 1          ;; x/2
    add edx, ebx        ;; (y/2)*(pitch/2) + x/2

    mov esi, su             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov su, esi

    mov esi, sv             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov sv, esi
;;;
;; pointer adjustment to (x,y)
    mov ecx, dst_pitch
    mov eax, dst_starty
    mov edx, eax
    mov ebx, dst_startx
    imul    eax, ecx        ;; y*pitch
    mov esi, dy             ;;
    add esi, eax            ;;  sy + y*pitch
    add esi, ebx            ;;  sy + y*pitch + x
    mov dy, esi

    shr ecx, 1          ;; pitch/2
    shr edx, 1          ;; y/2
    imul    edx, ecx    ;; (y/2)*(pitch/2)
    shr ebx, 1          ;; x/2
    add edx, ebx        ;; (y/2)*(pitch/2) + x/2

    mov esi, du             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov du, esi

    mov esi, dv             ;;
    add esi, edx            ;;  su + (y/2)*(pitch/2)
    mov dv, esi
;;-----
;; I420 top   P = top
;; [Y01Y02][Y03Y04]
;; [Y