Subversion Repositories Kolibri OS

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;;                                                                 ;;

;; Copyright (C) KolibriOS team 2010-2015. All rights reserved.    ;;

;; Distributed under terms of the GNU General Public License       ;;

;;                                                                 ;;

;;  VNC client for KolibriOS                                       ;;

;;                                                                 ;;

;;  Written by hidnplayr@kolibrios.org                             ;;

;;                                                                 ;;

;;          GNU GENERAL PUBLIC LICENSE                             ;;

;;             Version 2, June 1991                                ;;

;;                                                                 ;;

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pixel_to_24bpp:         ; returns in ecx

if BITS_PER_PIXEL = 8

        push    eax ebx

        mov     bl, 36

        mov     al, [esi]

        and     al, 7

        mul     bl

        mov     ch, al          ; red

        mov     al, [esi]

        shr     al, 3

        and     al, 7

        mul     bl

        mov     cl, al          ; green

        mov     bl, 85

        mov     al, [esi]

        shr     al, 6

        and     al, 3

        mul     bl

        shl     ecx, 8

        mov     cl, al          ; blue

        inc     esi

        pop     ebx eax

else if BITS_PER_PIXEL = 16

        push    eax

        lodsw

        mov     cl, ah

        and     al, 0xf8        ; red

        mov     cx, ax

        shl     cx, 5

        and     ch, 0xfc        ; green

        shl     ecx, 8

        mov     cl, al

        shl     cl, 3

        and     cx, 0x00f8      ; blue

        pop     eax

else

        xor     ecx, ecx

        mov     cx, [esi]

        shl     ecx, 8

        mov     cl, [esi+2]

        add     esi, 3

end if

        ret

encoding_RRE:

        DEBUGF  1,"RRE\n"

  @@:

        lea     eax, [esi+4+BYTES_PER_PIXEL]

        cmp     [datapointer], eax

        jae     @f

        call    read_data.more

        jmp     @b

  @@:

        lodsd

        bswap   eax

        mov     [subrectangles], eax

        DEBUGF  1, "%u subrectangles\n", eax

; Get background color

        call    pixel_to_24bpp

; Calculate first pixel pos

        movzx   eax, [screen.width]

        mul     [rectangle.y]                           ; [screen.width]*[rectangle.y]

        add     eax, [rectangle.x]                      ; [screen.width]*[rectangle.y]+[rectangle.x]

        lea     edi, [framebuffer_data+eax*3]           ; edi = framebuffer_data+([screen.width]*[rectangle.y]+[rectangle.x])*3

; Calculate offset between two rows of pixels

        movzx   eax, [screen.width]

        sub     eax, [rectangle.width]

        lea     ebp, [eax*3]                            ; ebp = ([screen.width]-[rectangle.width])*3

; Draw background rectangle

        push    edi

        mov     eax, ecx

        mov     edx, [rectangle.height]

  .lineloop:

        mov     ecx, [rectangle.width]

  .pixelloop:

        stosw

        rol     eax, 16

        stosb

        rol     eax, 16

        dec     ecx

        jnz     .pixelloop

        add     edi, ebp

        dec     edx

        jnz     .lineloop

        pop     edi

; Any subrectangles at all?

        cmp     [subrectangles], 0

        je      next_rectangle

  .subrectangle:

  @@:

        lea     eax, [esi+8+BYTES_PER_PIXEL]

        cmp     [datapointer], eax

        jae     @f

        call    read_data.more

        jmp     @b

  @@:

; Get subrectangle color

        call    pixel_to_24bpp

; Get coordinates

        xor     eax, eax

        lodsw

        xchg    al, ah

        mov     [subrectangle.x], eax

        lodsw

        xchg    al, ah

        mov     [subrectangle.y], eax

        lodsw

        xchg    al, ah

        mov     [subrectangle.width], eax

        lodsw

        xchg    al, ah

        mov     [subrectangle.height], eax

        DEBUGF  1, "Subrectangle: x=%u y=%u width=%u height=%u\n", \

        [subrectangle.x], [subrectangle.y], [subrectangle.width], [subrectangle.height]

; Calculate pos of first pixel

        push    edi

        movzx   eax, [screen.width]

        mul     [subrectangle.y]

        add     eax, [subrectangle.x]

        lea     eax, [eax*3]

        add     edi, eax

; Calculate offset between two rows of pixels

        movzx   eax, [screen.width]

        sub     eax, [subrectangle.width]

        lea     ebp, [eax*3]                            ; ebp = ([screen.width]-[rectangle.width])*3

; Draw the subrectangle

        mov     eax, ecx

        mov     edx, [subrectangle.height]

  .lineloop2:

        mov     ecx, [subrectangle.width]

  .pixelloop2:

        stosw

        rol     eax, 16

        stosb

        rol     eax, 16

        dec     ecx

        jnz     .pixelloop2

        add     edi, ebp

        dec     edx

        jnz     .lineloop2

        pop     edi

        dec     [subrectangles]

        jnz     .subrectangle

        jmp     next_rectangle