| 0,0 → 1,1089 |
|---|
| ;***************************************************************************** |
| ; PNG to RAW convert plugin - for zSea image viewer |
| ; Copyright (c) 2008, 2009, 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 <organization> 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 <copyright holder> 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. |
| ;--------------------------------------------------------------------- |
| filtering_RGB_Interlaced: |
| mov edx,dword filtering_RGB |
| mov ebp,dword move_Interlaced_RGB |
| jmp filtering_All |
| ;--------------------------------------------------------------------- |
| filtering_RGB_16_Interlaced: |
| mov edx,dword filtering_RGB_16 |
| mov ebp,dword move_Interlaced_RGB |
| jmp filtering_All |
| ;--------------------------------------------------------------------- |
| filtering_grayscale_Interlaced: |
| mov edx,dword filtering_grayscale |
| mov ebp,dword move_Interlaced_grayscale |
| jmp filtering_All |
| ;--------------------------------------------------------------------- |
| filtering_grayscale_16_Interlaced: |
| mov edx,dword filtering_grayscale_16 |
| mov ebp,dword move_Interlaced_grayscale |
| jmp filtering_All |
| ;--------------------------------------------------------------------- |
| pass dd 0 |
| filtering_All: |
| push edi |
| |
| mov ecx,[resolution] |
| imul ecx,[IHDR_data.Width] |
| mov eax,ecx |
| shr ecx,3 |
| test eax,7 |
| jz @f |
| inc ecx |
| @@: |
| mov eax,[IHDR_data.Height] |
| shr eax,1 |
| inc eax |
| imul ecx,eax |
| mcall 68, 12 |
| mov [Interlaced_area],eax |
| ; jmp .3 |
| mov eax,dword calculate_Interlaced_counters |
| mov ecx,7 |
| @@: |
| mov [pass],ecx |
| mov [Interlaced_step],eax |
| push ecx |
| push eax edx edi ebp eax |
| call dword [eax] ;calculate_Interlaced_1 |
| ; cmp [pass],1 |
| ; jbe .2 |
| call edx |
| ;.2: |
| pop eax ebp edi |
| push ebp |
| ; cmp [pass],1 |
| ; jbe .1 |
| call ebp |
| ;.1: |
| pop ebp edx eax |
| add eax,4 |
| pop ecx |
| dec ecx |
| jnz @r |
| ;.3: |
| mov ecx,[Interlaced_area] |
| mcall 68, 13 |
| |
| pop edi |
| ret |
| ;--------------------------------------------------------------------- |
| move_Interlaced_RGB: |
| push edi esi |
| mov esi,[Interlaced_area] |
| |
| mov ecx,[IHDR_data.Height] |
| test ecx,ecx |
| jz .end |
| |
| mov edx,[IHDR_data.Width] |
| test edx,edx |
| jz .end |
| |
| mov ebx,[Image_Width] |
| imul ebx,[resolution] |
| shr ebx,3 |
| |
| mov eax,[Starting_Col] |
| imul eax,[resolution] |
| shr eax,3 |
| add edi,eax |
| |
| mov eax,[Starting_Row] |
| imul eax,ebx |
| add edi,eax |
| |
| imul ebx,[Row_Increment] |
| |
| mov ebp,[resolution] |
| imul ebp,[Col_Increment] |
| shr ebp,3 |
| |
| .filter: |
| mov edx,[IHDR_data.Width] |
| push edi |
| |
| .filter_x: |
| cmp [IHDR_data.Bit_depth],byte 8 |
| jne @f |
| call .Interlaced_RGB_8 |
| jmp .1 |
| @@: |
| call .Interlaced_RGB_16 |
| .1: |
| dec edx |
| jnz .filter_x |
| |
| pop edi |
| |
| add edi,ebx |
| dec ecx |
| jnz .filter |
| .end: |
| pop esi edi |
| ret |
| ;------------------------------------------- |
| .Interlaced_RGB_8: |
| cld |
| lodsw |
| mov [edi],ax |
| lodsb |
| mov [edi+2],al |
| cmp [IHDR_data.Color_type],byte 6 |
| jne @f |
| lodsb |
| mov [edi+3],al |
| @@: |
| add edi,ebp |
| ret |
| ;------------------------------------------- |
| .Interlaced_RGB_16: |
| cld |
| lodsd |
| mov [edi],eax |
| lodsw |
| mov [edi+4],ax |
| cmp [IHDR_data.Color_type],byte 6 |
| jne @f |
| lodsw |
| mov [edi+6],al |
| @@: |
| add edi,ebp |
| ret |
| ;--------------------------------------------------------------------- |
| move_Interlaced_grayscale: |
| ; cmp [eax],dword calculate_Interlaced_1 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_2 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_3 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_4 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_5 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_6 |
| ; jne @f |
| ; ret |
| ;@@: |
| ; cmp [eax],dword calculate_Interlaced_7 |
| ; jne @f |
| ; ret |
| ;@@: |
| |
| push edi esi |
| mov esi,[Interlaced_area] |
| |
| mov ecx,[IHDR_data.Height] |
| test ecx,ecx |
| jz .end |
| |
| mov edx,[IHDR_data.Width] |
| test edx,edx |
| jz .end |
| |
| mov ebx,[Image_Width] |
| imul ebx,[resolution] |
| mov eax,ebx |
| shr ebx,3 |
| test eax,7 |
| jz @f |
| inc ebx |
| @@: |
| ; ebx = Width in bytes, need correct for resolution less 4b |
| |
| mov eax,[Starting_Col] |
| imul eax,[resolution] |
| ; mov ebp,eax |
| shr eax,3 |
| ; test ebp,7 |
| ; jz @f |
| ; inc eax |
| ;@@: |
| ; eax = Starting Colummn in bytes |
| add edi,eax |
| |
| mov eax,[Starting_Row] |
| imul eax,ebx |
| ; eax = Starting Row in bytes, no need correct! |
| add edi,eax |
| |
| imul ebx,[Row_Increment] |
| ; ebx = Row Increment in bytes, no need correct! |
| |
| mov eax,[IHDR_data.Width] |
| imul eax,[resolution] |
| mov ebp,eax |
| shr eax,3 |
| test ebp,7 |
| jz @f |
| inc eax |
| @@: |
| ; eax = Width in bytes for Interlaced, |
| ; need correct for resolution less 4b |
| |
| mov ebp,[resolution] |
| imul ebp,[Col_Increment] |
| ; mov eax,ebp |
| shr ebp,3 |
| ; test eax,7 |
| ; jz @f |
| ; inc ebp |
| ;@@: |
| ; ebp = Column Increment in bytes |
| |
| .filter_grayscale: |
| mov edx,[IHDR_data.Width] |
| cmp [resolution],8 |
| jae .filter_grayscale_1 |
| |
| .resolution_4: |
| cmp [resolution],4 |
| jne .resolution_2 |
| test edx,1 |
| jnz @f |
| inc edx |
| @@: |
| shr edx,1 |
| jmp .filter_grayscale_1 |
| |
| .resolution_2: |
| cmp [resolution],2 |
| jne .resolution_1 |
| test edx,3 |
| jnz @f |
| add edx,4 |
| @@: |
| shr edx,2 |
| jmp .filter_grayscale_1 |
| |
| .resolution_1: |
| push eax |
| mov eax,edx |
| shr edx,3 |
| test eax,7 |
| jz @f |
| inc edx |
| @@: |
| pop eax |
| .filter_grayscale_1: |
| push eax edi esi |
| |
| .filter_x_grayscale: |
| cmp [IHDR_data.Bit_depth],byte 16 |
| jne @f |
| call .Interlaced_grayscale_16 |
| jmp .1 |
| @@: |
| cmp [IHDR_data.Bit_depth],byte 8 |
| jne @f |
| call .Interlaced_grayscale_8 |
| jmp .1 |
| @@: |
| cmp [IHDR_data.Bit_depth],byte 4 |
| jne @f |
| call .Interlaced_grayscale_4 |
| jmp .1 |
| @@: |
| cmp [IHDR_data.Bit_depth],byte 2 |
| jne @f |
| call .Interlaced_grayscale_2 |
| jmp .1 |
| @@: |
| call .Interlaced_grayscale_1 |
| jmp .1 |
| .1: |
| |
| dec edx |
| jnz .filter_x_grayscale |
| pop esi edi eax |
| add esi,eax |
| |
| add edi,ebx |
| dec ecx |
| jnz .filter_grayscale |
| .end: |
| pop esi edi |
| ret |
| ;----------------------------------- |
| .Interlaced_grayscale_1: |
| mov eax,[Interlaced_step] |
| cmp eax,calculate_Interlaced_counters.1 |
| je .step_1 |
| cmp eax,calculate_Interlaced_counters.2 |
| je .step_2 |
| cmp eax,calculate_Interlaced_counters.3 |
| je .step_3 |
| cmp eax,calculate_Interlaced_counters.4 |
| je .step_4 |
| cmp eax,calculate_Interlaced_counters.5 |
| je .step_5 |
| cmp eax,calculate_Interlaced_counters.6 |
| je .step_6 |
| cld |
| movsb |
| ret |
| ;-------------------- |
| .step_6: |
| push ebx |
| cld |
| lodsb |
| mov ah,al |
| |
| call @f |
| |
| shl ah,4 |
| mov al,ah |
| |
| call @f |
| |
| pop ebx |
| ret |
| ;-------------------- |
| @@: |
| shr al,1 |
| and al,64 |
| |
| mov bl,ah |
| shr bl,2 |
| and bl,16 |
| add al,bl |
| |
| mov bl,ah |
| shr bl,3 |
| and bl,4 |
| add al,bl |
| |
| mov bl,ah |
| shr bl,4 |
| and bl,1 |
| add al,bl |
| |
| add al,[edi] |
| stosb |
| ret |
| ;-------------------- |
| .step_5: |
| push ebx |
| cld |
| lodsb |
| |
| mov ah,al |
| |
| call @f |
| |
| shl ah,4 |
| mov al,ah |
| |
| call @f |
| |
| pop ebx |
| ret |
| ;-------------------- |
| @@: |
| and al,128 |
| |
| mov bl,ah |
| shr bl,1 |
| and bl,32 |
| add al,bl |
| |
| mov bl,ah |
| shr bl,2 |
| and bl,8 |
| add al,bl |
| |
| mov bl,ah |
| shr bl,3 |
| and bl,2 |
| add al,bl |
| |
| add al,[edi] |
| stosb |
| ret |
| ;-------------------- |
| .step_4: |
| push ebx |
| cld |
| lodsb |
| |
| mov ah,al |
| shr al,2 |
| and al,32 |
| mov bl,ah |
| shr bl,5 |
| call @f |
| |
| mov al,ah |
| and al,32 |
| mov bl,ah |
| shr bl,3 |
| call @f |
| |
| mov al,ah |
| shl al,2 |
| and al,32 |
| mov bl,ah |
| shr bl,1 |
| call @f |
| |
| mov al,ah |
| shl al,4 |
| and al,32 |
| mov bl,ah |
| shl bl,1 |
| call @f |
| pop ebx |
| ret |
| ;-------------------- |
| @@: |
| and bl,2 |
| add al,bl |
| add al,[edi] |
| stosb |
| ret |
| ;-------------------- |
| .step_3: |
| push ebx |
| cld |
| lodsb |
| |
| mov ah,al |
| and al,128 |
| mov bl,ah |
| shr bl,3 |
| call @f |
| |
| mov al,ah |
| shl al,2 |
| and al,128 |
| mov bl,ah |
| shr bl,1 |
| call @f |
| |
| mov al,ah |
| shl al,4 |
| and al,128 |
| mov bl,ah |
| shl bl,1 |
| call @f |
| |
| mov al,ah |
| shl al,6 |
| and al,128 |
| mov bl,ah |
| shl bl,3 |
| call @f |
| pop ebx |
| ret |
| ;-------------------- |
| @@: |
| and bl,8 |
| add al,bl |
| add al,[edi] |
| stosb |
| ret |
| ;-------------------- |
| .step_2: |
| cld |
| lodsb |
| |
| mov ah,al |
| shr al,4 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shr al,3 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shr al,2 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shr al,1 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,1 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,2 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,3 |
| and al,8 |
| add al,[edi] |
| stosb |
| |
| ret |
| ;-------------------- |
| .step_1: |
| cld |
| lodsb |
| mov ah,al |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,1 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,2 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,3 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,4 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,5 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,6 |
| and al,128 |
| stosb |
| mov al,ah |
| shl al,7 |
| and al,128 |
| stosb |
| ret |
| ;----------------------------------- |
| .Interlaced_grayscale_2: |
| mov eax,[Interlaced_step] |
| cmp eax,calculate_Interlaced_counters.1 |
| je .step_1_1 |
| cmp eax,calculate_Interlaced_counters.2 |
| je .step_2_1 |
| cmp eax,calculate_Interlaced_counters.3 |
| je .step_3_1 |
| cmp eax,calculate_Interlaced_counters.4 |
| je .step_4_1 |
| cmp eax,calculate_Interlaced_counters.5 |
| je .step_5_1 |
| cmp eax,calculate_Interlaced_counters.6 |
| je .step_6_1 |
| cld |
| movsb |
| ret |
| |
| .step_6_1: |
| push ebx |
| cld |
| lodsb |
| mov ah,al |
| |
| shr al,2 |
| and al,48 |
| mov bl,ah |
| shr bl,4 |
| and bl,3 |
| add al,bl |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,2 |
| and al,48 |
| mov bl,ah |
| and bl,3 |
| add al,bl |
| add al,[edi] |
| stosb |
| pop ebx |
| ret |
| |
| .step_5_1: |
| push ebx |
| cld |
| lodsb |
| mov ah,al |
| |
| and al,192 |
| mov bl,ah |
| shr bl,2 |
| and bl,12 |
| add al,bl |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,4 |
| and al,192 |
| mov bl,ah |
| shl bl,2 |
| and bl,12 |
| add al,bl |
| add al,[edi] |
| stosb |
| pop ebx |
| ret |
| |
| .step_4_1: |
| cld |
| lodsb |
| mov ah,al |
| |
| shr al,4 |
| and al,12 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shr al,2 |
| and al,12 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| and al,12 |
| add al,[edi] |
| stosb |
| |
| mov al,ah |
| shl al,2 |
| and al,12 |
| add al,[edi] |
| stosb |
| |
| ret |
| |
| .step_3_1: |
| cld |
| lodsb |
| mov ah,al |
| |
| and al,192 |
| stosb |
| |
| mov al,ah |
| shl al,2 |
| and al,192 |
| stosb |
| |
| mov al,ah |
| shl al,4 |
| and al,192 |
| stosb |
| |
| mov al,ah |
| shl al,6 |
| and al,192 |
| stosb |
| |
| ret |
| |
| .step_2_1: |
| cld |
| lodsb |
| mov ah,al |
| |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,2 |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,4 |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,6 |
| and al,192 |
| stosb |
| inc edi |
| |
| ret |
| |
| .step_1_1: |
| cld |
| lodsb |
| |
| mov ah,al |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,2 |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,4 |
| and al,192 |
| stosb |
| inc edi |
| |
| mov al,ah |
| shl al,6 |
| and al,192 |
| stosb |
| inc edi |
| |
| ret |
| ;----------------------------------- |
| .Interlaced_grayscale_4: |
| mov al,[esi] |
| mov ah,[edi] |
| test ebp,ebp |
| jnz @f |
| call .even_2 |
| jmp .2 |
| @@: |
| test [Starting_Col],byte 1 |
| jz @f |
| call .even_1 |
| jmp .2 |
| @@: |
| call .odd_1 |
| .2: |
| add al,ah |
| mov [edi],al |
| add edi,ebp |
| |
| mov al,[esi] |
| mov ah,[edi] |
| test ebp,ebp |
| jnz @f |
| call .odd_1 |
| jmp .3 |
| @@: |
| test [Starting_Col],byte 1 |
| jz @f |
| call .even_2 |
| jmp .3 |
| @@: |
| call .odd_2 |
| .3: |
| add al,ah |
| mov [edi],al |
| add edi,ebp |
| |
| inc esi |
| test ebp,ebp |
| jnz @f |
| inc edi |
| @@: |
| ret |
| ;--------------------- |
| .even_1: |
| shr al,4 |
| and ah,11110000b |
| ret |
| ;--------------------- |
| .even_2: |
| and al,1111b |
| and ah,11110000b |
| ret |
| ;--------------------- |
| .odd_1: |
| and al,11110000b |
| and ah,1111b |
| ret |
| ;--------------------- |
| .odd_2: |
| shl al,4 |
| and ah,1111b |
| ret |
| ;----------------------------------- |
| .Interlaced_grayscale_8: |
| cld |
| lodsb |
| mov [edi],al |
| cmp [IHDR_data.Color_type],byte 4 |
| jne @f |
| cld |
| lodsb |
| mov [edi+1],al |
| @@: |
| add edi,ebp |
| ret |
| ;----------------------------------- |
| .Interlaced_grayscale_16: |
| cld |
| lodsw |
| mov [edi],ax |
| cmp [IHDR_data.Color_type],byte 4 |
| jne @f |
| cld |
| lodsw |
| mov [edi+2],ax |
| @@: |
| add edi,ebp |
| ret |
| ;--------------------------------------------------------------------- |
| calculatte_Interlaced_data_1: |
| mov [first_line],byte 1 |
| mov edi,[Interlaced_area] |
| mov eax,[Image_Width] |
| mov ebx,dword Starting_Row |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_1: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 0 ;Starting_Row |
| mov [ebx+4],dword 0 ;Starting_Col |
| mov [ebx+8],dword 8 ;Row_Increment |
| mov [ebx+12],dword 8 ;Col_Increment |
| mov ebx,eax |
| shr eax,3 |
| test ebx,7 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| mov ebx,eax |
| shr eax,3 |
| test ebx,7 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_2: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 0 ;Starting_Row |
| mov [ebx+4],dword 4 ;Starting_Col |
| mov [ebx+8],dword 8 ;Row_Increment |
| mov [ebx+12],dword 8 ;Col_Increment |
| cmp eax,4 |
| ja @f |
| mov eax,4 |
| @@: |
| sub eax,4 |
| mov ebx,eax |
| shr eax,3 |
| test ebx,7 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| mov ebx,eax |
| shr eax,3 |
| test ebx,7 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_3: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 4 ;Starting_Row |
| mov [ebx+4],dword 0 ;Starting_Col |
| mov [ebx+8],dword 8 ;Row_Increment |
| mov [ebx+12],dword 4 ;Col_Increment |
| mov ebx,eax |
| shr eax,2 |
| test ebx,3 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| cmp eax,4 |
| ja @f |
| mov eax,4 |
| @@: |
| sub eax,4 |
| mov ebx,eax |
| shr eax,3 |
| test ebx,7 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_4: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 0 ;Starting_Row |
| mov [ebx+4],dword 2 ;Starting_Col |
| mov [ebx+8],dword 4 ;Row_Increment |
| mov [ebx+12],dword 4 ;Col_Increment |
| cmp eax,2 |
| ja @f |
| mov eax,2 |
| @@: |
| sub eax,2 |
| mov ebx,eax |
| shr eax,2 |
| test ebx,3 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| mov ebx,eax |
| shr eax,2 |
| test ebx,3 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_5: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 2 ;Starting_Row |
| mov [ebx+4],dword 0 ;Starting_Col |
| mov [ebx+8],dword 4 ;Row_Increment |
| mov [ebx+12],dword 2 ;Col_Increment |
| mov ebx,eax |
| shr eax,1 |
| test ebx,1 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| cmp eax,2 |
| ja @f |
| mov eax,2 |
| @@: |
| sub eax,2 |
| mov ebx,eax |
| shr eax,2 |
| test ebx,3 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_6: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 0 ;Starting_Row |
| mov [ebx+4],dword 1 ;Starting_Col |
| mov [ebx+8],dword 2 ;Row_Increment |
| mov [ebx+12],dword 2 ;Col_Increment |
| cmp eax,1 |
| ja @f |
| mov eax,1 |
| @@: |
| dec eax |
| mov ebx,eax |
| shr eax,1 |
| test ebx,1 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Width],eax |
| |
| mov eax,[Image_Height] |
| mov ebx,eax |
| shr eax,1 |
| test ebx,1 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| ret |
| ;--------------------------------------------------------------------- |
| calculate_Interlaced_7: |
| call calculatte_Interlaced_data_1 |
| mov [ebx+0],dword 1 ;Starting_Row |
| mov [ebx+4],dword 0 ;Starting_Col |
| mov [ebx+8],dword 2 ;Row_Increment |
| mov [ebx+12],dword 1 ;Col_Increment |
| |
| mov [IHDR_data.Width],eax |
| ; mov ebx,[raw_area] |
| ; mov [ebx+4],eax |
| |
| mov eax,[Image_Height] |
| cmp eax,1 |
| ja @f |
| mov eax,1 |
| @@: |
| dec eax |
| mov ebx,eax |
| shr eax,1 |
| test ebx,1 |
| jz @f |
| inc eax |
| @@: |
| mov [IHDR_data.Height],eax |
| |
| ; mov ebx,[raw_area] |
| ; mov eax,[Image_Height] |
| ; mov [ebx+8],eax |
| ret |
| ;--------------------------------------------------------------------- |