1089 lines
17 KiB
PHP
1089 lines
17 KiB
PHP
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;*****************************************************************************
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; PNG to RAW convert plugin - for zSea image viewer
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; Copyright (c) 2008, 2009, Marat Zakiyanov aka Mario79, aka Mario
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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; * Redistributions of source code must retain the above copyright
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; notice, this list of conditions and the following disclaimer.
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; * Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in the
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; documentation and/or other materials provided with the distribution.
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; * Neither the name of the <organization> nor the
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; names of its contributors may be used to endorse or promote products
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; derived from this software without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY Marat Zakiyanov ''AS IS'' AND ANY
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; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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; DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
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; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;---------------------------------------------------------------------
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filtering_RGB_Interlaced:
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mov edx,dword filtering_RGB
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mov ebp,dword move_Interlaced_RGB
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jmp filtering_All
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;---------------------------------------------------------------------
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filtering_RGB_16_Interlaced:
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mov edx,dword filtering_RGB_16
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mov ebp,dword move_Interlaced_RGB
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jmp filtering_All
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;---------------------------------------------------------------------
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filtering_grayscale_Interlaced:
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mov edx,dword filtering_grayscale
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mov ebp,dword move_Interlaced_grayscale
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jmp filtering_All
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;---------------------------------------------------------------------
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filtering_grayscale_16_Interlaced:
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mov edx,dword filtering_grayscale_16
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mov ebp,dword move_Interlaced_grayscale
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jmp filtering_All
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;---------------------------------------------------------------------
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pass dd 0
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filtering_All:
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push edi
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mov ecx,[resolution]
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imul ecx,[IHDR_data.Width]
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mov eax,ecx
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shr ecx,3
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test eax,7
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jz @f
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inc ecx
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@@:
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mov eax,[IHDR_data.Height]
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shr eax,1
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inc eax
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imul ecx,eax
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mcall 68, 12
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mov [Interlaced_area],eax
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; jmp .3
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mov eax,dword calculate_Interlaced_counters
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mov ecx,7
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@@:
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mov [pass],ecx
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mov [Interlaced_step],eax
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push ecx
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push eax edx edi ebp eax
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call dword [eax] ;calculate_Interlaced_1
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; cmp [pass],1
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; jbe .2
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call edx
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;.2:
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pop eax ebp edi
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push ebp
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; cmp [pass],1
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; jbe .1
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call ebp
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;.1:
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pop ebp edx eax
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add eax,4
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pop ecx
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dec ecx
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jnz @r
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;.3:
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mov ecx,[Interlaced_area]
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mcall 68, 13
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pop edi
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ret
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;---------------------------------------------------------------------
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move_Interlaced_RGB:
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push edi esi
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mov esi,[Interlaced_area]
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mov ecx,[IHDR_data.Height]
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test ecx,ecx
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jz .end
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mov edx,[IHDR_data.Width]
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test edx,edx
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jz .end
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mov ebx,[Image_Width]
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imul ebx,[resolution]
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shr ebx,3
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mov eax,[Starting_Col]
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imul eax,[resolution]
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shr eax,3
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add edi,eax
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mov eax,[Starting_Row]
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imul eax,ebx
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add edi,eax
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imul ebx,[Row_Increment]
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mov ebp,[resolution]
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imul ebp,[Col_Increment]
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shr ebp,3
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.filter:
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mov edx,[IHDR_data.Width]
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push edi
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.filter_x:
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cmp [IHDR_data.Bit_depth],byte 8
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jne @f
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call .Interlaced_RGB_8
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jmp .1
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@@:
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call .Interlaced_RGB_16
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.1:
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dec edx
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jnz .filter_x
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pop edi
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add edi,ebx
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dec ecx
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jnz .filter
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.end:
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pop esi edi
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ret
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;-------------------------------------------
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.Interlaced_RGB_8:
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cld
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lodsw
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mov [edi],ax
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lodsb
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mov [edi+2],al
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cmp [IHDR_data.Color_type],byte 6
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jne @f
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lodsb
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mov [edi+3],al
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@@:
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add edi,ebp
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ret
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;-------------------------------------------
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.Interlaced_RGB_16:
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cld
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lodsd
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mov [edi],eax
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lodsw
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mov [edi+4],ax
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cmp [IHDR_data.Color_type],byte 6
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jne @f
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lodsw
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mov [edi+6],al
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@@:
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add edi,ebp
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ret
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;---------------------------------------------------------------------
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move_Interlaced_grayscale:
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; cmp [eax],dword calculate_Interlaced_1
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_2
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_3
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_4
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_5
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_6
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; jne @f
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; ret
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;@@:
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; cmp [eax],dword calculate_Interlaced_7
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; jne @f
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; ret
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;@@:
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push edi esi
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mov esi,[Interlaced_area]
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mov ecx,[IHDR_data.Height]
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test ecx,ecx
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jz .end
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mov edx,[IHDR_data.Width]
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test edx,edx
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jz .end
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mov ebx,[Image_Width]
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imul ebx,[resolution]
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mov eax,ebx
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shr ebx,3
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test eax,7
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jz @f
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inc ebx
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@@:
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; ebx = Width in bytes, need correct for resolution less 4b
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mov eax,[Starting_Col]
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imul eax,[resolution]
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; mov ebp,eax
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shr eax,3
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; test ebp,7
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; jz @f
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; inc eax
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;@@:
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; eax = Starting Colummn in bytes
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add edi,eax
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mov eax,[Starting_Row]
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imul eax,ebx
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; eax = Starting Row in bytes, no need correct!
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add edi,eax
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imul ebx,[Row_Increment]
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; ebx = Row Increment in bytes, no need correct!
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mov eax,[IHDR_data.Width]
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imul eax,[resolution]
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mov ebp,eax
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shr eax,3
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test ebp,7
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jz @f
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inc eax
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@@:
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; eax = Width in bytes for Interlaced,
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; need correct for resolution less 4b
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mov ebp,[resolution]
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imul ebp,[Col_Increment]
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; mov eax,ebp
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shr ebp,3
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; test eax,7
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; jz @f
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; inc ebp
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;@@:
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; ebp = Column Increment in bytes
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.filter_grayscale:
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mov edx,[IHDR_data.Width]
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cmp [resolution],8
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jae .filter_grayscale_1
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.resolution_4:
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cmp [resolution],4
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jne .resolution_2
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test edx,1
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jnz @f
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inc edx
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@@:
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shr edx,1
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jmp .filter_grayscale_1
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.resolution_2:
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cmp [resolution],2
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jne .resolution_1
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test edx,3
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jnz @f
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add edx,4
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@@:
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shr edx,2
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jmp .filter_grayscale_1
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.resolution_1:
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push eax
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mov eax,edx
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shr edx,3
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test eax,7
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jz @f
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inc edx
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@@:
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pop eax
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.filter_grayscale_1:
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push eax edi esi
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.filter_x_grayscale:
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cmp [IHDR_data.Bit_depth],byte 16
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jne @f
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call .Interlaced_grayscale_16
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jmp .1
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@@:
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cmp [IHDR_data.Bit_depth],byte 8
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jne @f
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call .Interlaced_grayscale_8
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jmp .1
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@@:
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cmp [IHDR_data.Bit_depth],byte 4
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jne @f
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call .Interlaced_grayscale_4
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jmp .1
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@@:
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cmp [IHDR_data.Bit_depth],byte 2
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jne @f
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call .Interlaced_grayscale_2
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jmp .1
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@@:
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call .Interlaced_grayscale_1
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jmp .1
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.1:
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|
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|
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|
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dec edx
|
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|
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jnz .filter_x_grayscale
|
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|
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pop esi edi eax
|
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|
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add esi,eax
|
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|
|
|
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|
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add edi,ebx
|
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|
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dec ecx
|
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|
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jnz .filter_grayscale
|
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|
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.end:
|
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|
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pop esi edi
|
||
|
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ret
|
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|
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;-----------------------------------
|
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.Interlaced_grayscale_1:
|
||
|
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mov eax,[Interlaced_step]
|
||
|
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cmp eax,calculate_Interlaced_counters.1
|
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|
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je .step_1
|
||
|
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cmp eax,calculate_Interlaced_counters.2
|
||
|
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je .step_2
|
||
|
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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
|
||
|
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cmp eax,calculate_Interlaced_counters.6
|
||
|
|
je .step_6
|
||
|
|
cld
|
||
|
|
movsb
|
||
|
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ret
|
||
|
|
;--------------------
|
||
|
|
.step_6:
|
||
|
|
push ebx
|
||
|
|
cld
|
||
|
|
lodsb
|
||
|
|
mov ah,al
|
||
|
|
|
||
|
|
call @f
|
||
|
|
|
||
|
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shl ah,4
|
||
|
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mov al,ah
|
||
|
|
|
||
|
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call @f
|
||
|
|
|
||
|
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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
|
||
|
|
;---------------------------------------------------------------------
|