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;*****************************************************************************

; Rotate RAW image plugin - for zSea image viewer

; Copyright (c) 2009 - 2011, Marat Zakiyanov aka Mario79, aka Mario

; All rights reserved.

;

; Redistribution and use in source and binary forms, with or without

; modification, are permitted provided that the following conditions are met:

;	 * Redistributions of source code must retain the above copyright

;	   notice, this list of conditions and the following disclaimer.

;	 * Redistributions in binary form must reproduce the above copyright

;	   notice, this list of conditions and the following disclaimer in the

;	   documentation and/or other materials provided with the distribution.

;	 * Neither the name of the  nor the

;	   names of its contributors may be used to endorse or promote products

;	   derived from this software without specific prior written permission.

;

; THIS SOFTWARE IS PROVIDED BY Marat Zakiyanov ''AS IS'' AND ANY

; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

; DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY

; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

;*****************************************************************************

; Rotate 32b, 24b, 16b, 8b

format MS COFF

public EXPORTS

section '.flat' code readable align 16

;include	'macros.inc'

include	'../../../../macros.inc'

;---------------------------------------------------------------------

START:

	pushad

	mov	ebx,dword [esp+40]

	mov	eax,dword [esp+36]

	mov [pointer],eax

; ebx - direction

; 1 - clockwise, 2 - counter clockwise

; 3 - Left&Right, 4 - Up&Down

	mov [direction],ebx

	mov eax,[eax+4]

	mov [image_file],eax

    mov  esi,[eax+28]

    add  esi,eax

;	mov  ecx,[eax+32]

;	xor  ebx,ebx

;	mov  [raw_area],ebx

	mov ebx,[eax+12]

	cmp  ebx,32

	jne  @f

	mov  ebp,dword START.32

	jmp  .1

@@:

	cmp  ebx,24

	jne  @f

	mov  ebp,dword START.24

	jmp  .1

@@:

	cmp  ebx,16

	jne  @f

	mov  ebp,dword START.16

	jmp  .1

@@:

	cmp  ebx,15

	jne  @f

	inc  ebx

	mov  ebp,dword START.16

	jmp  .1

@@:

	cmp  ebx,8

	jne  @f

	mov  ebp,dword START.8

@@:

.1:

	shr  ebx,3

	mov  [bytes_to_pixel],ebx

	mov  ebx,[eax+4]

	imul ebx,[bytes_to_pixel]

	mov  [size_x],ebx

	mov  ebx,[eax+8]

	imul ebx,[bytes_to_pixel]

	mov  [size_y],ebx

	call .get_memory

	cmp  [direction],1

	jne  @f

	call .clockwise

	jmp .end

@@:

	cmp  [direction],2

	jne  @f

	call .counter_clockwise

	jmp .end

@@:

	cmp  [direction],3

	jne  @f

	call .Left_Right

	jmp .end

@@:

	cmp  [direction],4

	jne  .exit

	call .Up_Down

.end:

	xchg esi,edi

	mov ecx,[image_file]

	mov eax,[ecx+4]

	imul eax,[bytes_to_pixel]

	imul eax,[ecx+8]

	mov ecx,eax

	cld

	rep movsb

	mov   ecx,[raw_area]

	mcall 68,13

;---------------------------------------------------------------------

.ret_ok:

	cmp  [direction],1

	jne  @f

	call  .XY_data_exchange

	jmp  .exit

@@:

	cmp  [direction],2

	jne  .exit

	call  .XY_data_exchange

.exit:

	popad

	ret	8

;---------------------------------------------------------------------

.XY_data_exchange:

	mov ecx,[image_file]

	mov eax,[ecx+4]

	mov ebx,[ecx+8]

	mov [ecx+8],eax

	mov [ecx+4],ebx

	ret

;---------------------------------------------------------------------

.clockwise:

	push edi esi

	add  edi,[size_y]

	sub  edi,[bytes_to_pixel]

.y:

	push edi

	push ebx

.x:

	call ebp

	add  edi,[size_y]

	dec  ebx

	jnz  .x

	pop ebx

	pop  edi

	sub  edi,[bytes_to_pixel]

	dec ecx

	jnz .y

	pop esi edi

	ret

;---------------------------------------------------------------------

.counter_clockwise:

	push edi esi

	mov  eax,[eax+4]

	dec  eax

	imul eax,[size_y]

	add  edi,eax

.y1:

	push edi

	push ebx

.x1:

	call ebp

	sub  edi,[size_y]

	dec  ebx

	jnz  .x1

	pop  ebx

	pop  edi

	add  edi,[bytes_to_pixel]

	dec  ecx

	jnz .y1

	pop  esi edi

	ret

;---------------------------------------------------------------------

.Left_Right:

	push edi esi

	add  edi,[size_x]

.y2:

	push edi

	push ebx

.x2:

	sub  edi,[bytes_to_pixel]

	call ebp

	dec  ebx

	jnz  .x2

	pop  ebx

	pop  edi

	add  edi,[size_x]

	dec  ecx

	jnz .y2

	pop  esi edi

	ret

;---------------------------------------------------------------------

.Up_Down:

	push edi esi

	mov  eax,[eax+8]

	dec  eax

	imul eax,[size_x]

	add  edi,eax

.y3:

	push edi

	push ebx

.x3:

	call ebp

	add  edi,[bytes_to_pixel]

	dec  ebx

	jnz  .x3

	pop  ebx

	pop  edi

	sub  edi,[size_x]

	dec  ecx

	jnz .y3

	pop  esi edi

	ret

;---------------------------------------------------------------------

.32:

	cld

	lodsd

	mov  [edi],eax

	ret

;---------------------------------------------------------------------

.24:

	cld

	lodsw

	mov  [edi],ax

	lodsb

	mov  [edi+2],al

	ret

;---------------------------------------------------------------------

.16:

	cld

	lodsw

	mov  [edi],ax

	ret

;---------------------------------------------------------------------

.8:

	cld

	lodsb

	mov  [edi],al

	ret

;---------------------------------------------------------------------

.get_memory:

	mov  ecx,[eax+4]

	imul ecx,[eax+8]

	imul ecx,[bytes_to_pixel]

	push eax

	mcall 68,12

	mov  [raw_area],eax

	mov  edi,eax

	pop  eax

	mov  ebx,[eax+4]

	mov  ecx,[eax+8]

	ret

;---------------------------------------------------------------------

align 16

EXPORTS:

	dd      szStart,	START

	dd      szVersion,	0x00010001

	dd      0

szStart		db 'START',0

szVersion	db 'version',0

pointer		dd 0

image_file	dd 0

direction	dd 0

size_x		dd 0

size_y		dd 0

bytes_to_pixel dd 0

;delta		dd 0

;resolution	dd 0

;compression	dd 0

raw_area	dd 0