forked from KolibriOS/kolibrios
f705611d81
* programs which use libs-dev updated accordingly * libimg: support for .ico and .cur files (icons and cursors) * kiv: show many different images in one file in one row git-svn-id: svn://kolibrios.org@1102 a494cfbc-eb01-0410-851d-a64ba20cac60
881 lines
17 KiB
NASM
881 lines
17 KiB
NASM
;;================================================================================================;;
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;;//// png.asm //// (c) diamond, 2009 ////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;; ;;
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;; This file is part of Common development libraries (Libs-Dev). ;;
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;; ;;
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;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;;
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;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;;
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;; of the License, or (at your option) any later version. ;;
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;; ;;
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;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;;
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;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;;
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;; Lesser General Public License for more details. ;;
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;; ;;
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;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev. ;;
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;; If not, see <http://www.gnu.org/licenses/>. ;;
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;; ;;
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;;================================================================================================;;
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;;================================================================================================;;
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;;proc img.is.png _data, _length ;////////////////////////////////////////////////////////////////;;
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img.is.png:
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;;------------------------------------------------------------------------------------------------;;
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;? Determine if raw data could be decoded (is in PNG format) ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _data = raw data as read from file/stream ;;
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;> _length = data length ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = false / true ;;
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;;================================================================================================;;
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; test 1 (length of data)
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cmp dword [esp+8], 8
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jb .nope
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; test 2: signature
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mov eax, [esp+4]
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cmp dword [eax], 0x474E5089
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jne .nope
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cmp dword [eax+4], 0x0A1A0A0D
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je .yep
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.nope:
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xor eax, eax
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ret 8
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.yep:
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xor eax, eax
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inc eax
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ret 8
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;endp
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;;================================================================================================;;
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;;proc img.decode.png _data, _length, _options ;//////////////////////////////////////////////////;;
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img.decode.png:
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xor eax, eax ; .image = 0
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pushad
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mov ebp, esp
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.localsize = 15*4
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virtual at ebp - .localsize
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.width dd ?
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.height dd ?
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.bit_depth dd ?
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.color_type dd ?
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.bytes_per_pixel dd ?
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.scanline_len dd ?
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.cur_chunk_ptr dd ?
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.cur_chunk_size dd ?
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.paeth_a dd ?
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.paeth_b dd ?
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.paeth_c dd ?
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.paeth_pa dd ?
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.paeth_pb dd ?
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.paeth_pc dd ?
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.idat_read dd ?
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rb 1Ch
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.image dd ?
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rd 1
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.data dd ?
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.length dd ?
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.options dd ?
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end virtual
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push 0 ; .idat_read = 0
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sub esp, .localsize-4
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; load deflate unpacker, if not yet
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; acquire mutex
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@@:
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push 1
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pop eax
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xchg [deflate_loader_mutex], eax ; 'xchg' has an implicit 'lock' prefix
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test eax, eax
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jz @f
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mcall 5, 1
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jmp @b
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@@:
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cmp [deflate_unpack2], __deflate_unpack2_import_name__
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jnz .deflate_loaded
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; do loading
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invoke dll.load, @IMPORT
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test eax, eax
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jz .deflate_loaded
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add esp, .localsize
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popad
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mov [deflate_loader_mutex], eax
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ret 12
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.deflate_loaded:
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; release mutex
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mov [deflate_loader_mutex], 0
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; ok, continue
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mov esi, [.data] ; esi -> data
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mov ecx, [.length] ; ecx = length
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; the signature has been already checked in img.is.png
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lodsd
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lodsd
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sub ecx, 8
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xor ebx, ebx ; no image allocated
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.chunks_loop:
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sub ecx, 12
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jc .eof
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lodsd ; chunk length
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bswap eax
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sub ecx, eax
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jc .eof
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push ecx ; save length of data rest
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xchg eax, ecx ; ecx = size of data in the chunk
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lodsd ; chunk type
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cmp eax, 'IHDR'
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jz .ihdr
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cmp eax, 'IDAT'
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jz .idat
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cmp eax, 'IEND'
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jz .iend
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cmp eax, 'PLTE'
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jz .palette
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; unrecognized chunk, ignore
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lea esi, [esi+ecx+4]
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pop ecx
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jmp .chunks_loop
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; IHDR chunk
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.ihdr:
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cmp ecx, 13
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jnz .invalid_chunk
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cmp [.image], 0
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jnz .invalid_chunk
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; read image characteristics
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lodsd
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bswap eax
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mov [.width], eax
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lodsd
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bswap eax
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mov [.height], eax
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xor eax, eax
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lea ebx, [eax+1]
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lodsb
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cmp al, 16
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ja .invalid_chunk
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test al, al
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jz .invalid_chunk
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lea edx, [eax-1]
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test al, dl
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jnz .invalid_chunk
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mov [.bit_depth], eax
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lodsb
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test al, not 7
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jnz .invalid_chunk
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mov [.color_type], eax
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lodsb
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test al, al
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jnz .invalid_chunk ; only compression method 0 is defined
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lodsb
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test al, al
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jnz .invalid_chunk ; only filtering method 0 is defined
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lodsb
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test al, al
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jnz .invalid_chunk ; progressive PNGs are not supported yet
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; check for correctness and calculate bytes_per_pixel and scanline_len
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mov eax, [.bit_depth]
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mov edx, [.color_type]
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dec edx
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js .grayscale1
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dec edx
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jz .rgb1
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dec edx
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jz .palette1
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dec edx
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jz .grayscale_alpha1
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dec edx
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dec edx
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jnz .invalid_chunk
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.rgb_alpha1:
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inc ebx
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.rgb1:
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inc ebx
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.grayscale_alpha1:
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inc ebx
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cmp al, 8
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jb .invalid_chunk
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jmp @f
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.palette1:
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cmp al, 8
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ja .invalid_chunk
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.grayscale1:
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@@:
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mul ebx
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push eax
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add eax, 7
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shr eax, 3
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mov [.bytes_per_pixel], eax
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pop eax
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mul [.width]
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add eax, 7
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shr eax, 3
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mov [.scanline_len], eax
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; allocate image
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push Image.bpp24
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pop eax
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cmp [.color_type], 2
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jz @f
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mov al, Image.bpp32
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cmp [.color_type], 6
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jz @f
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mov al, Image.bpp8
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@@:
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stdcall img.create, [.width], [.height], eax
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test eax, eax
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jz .invalid_chunk
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mov [.image], eax
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jmp .next_chunk
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.invalid_chunk:
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.iend:
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pop ecx
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.eof:
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add esp, .localsize
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popad
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ret 12
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; PLTE chunk
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.palette:
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mov eax, [.image]
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test eax, eax
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jz .invalid_chunk
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cmp [.color_type], 3
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jz .copy_palette
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.ignore_chunk:
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add esi, ecx
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.next_chunk:
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lodsd
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pop ecx
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jmp .chunks_loop
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.copy_palette:
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mov edi, [eax + Image.Palette]
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xor eax, eax
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cmp ecx, 256*3
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ja .next_chunk
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@@:
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sub ecx, 3
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jz @f
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js .invalid_chunk
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lodsd
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dec esi
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bswap eax
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shr eax, 8
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stosd
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jmp @b
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@@:
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lodsd
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dec esi
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bswap eax
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shr eax, 8
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stosd
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jmp .next_chunk
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.idat:
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jecxz .next_chunk
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cmp [.idat_read], 0
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jnz @f
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lodsb
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inc [.idat_read]
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and al, 0xF
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cmp al, 8
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jnz .invalid_chunk
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dec ecx
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jz .next_chunk
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@@:
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cmp [.idat_read], 1
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jnz @f
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lodsb
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inc [.idat_read]
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test al, 20h
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jnz .invalid_chunk
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dec ecx
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jz .next_chunk
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@@:
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mov [.cur_chunk_ptr], esi
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mov [.cur_chunk_size], ecx
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pop [.length]
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push eax
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push esp
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push ebp
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push .deflate_callback
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call [deflate_unpack2]
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pop ecx
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test eax, eax
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jz .invalid_chunk
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; convert PNG unpacked data to RAW data
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mov esi, eax
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push eax ecx
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; unfilter
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mov edx, [.height]
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.unfilter_loop_e:
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mov ebx, [.scanline_len]
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sub ecx, 1
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jc .unfilter_done
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sub ecx, ebx
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jc .unfilter_done
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movzx eax, byte [esi]
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add esi, 1
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cmp eax, 4
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ja .next_scanline
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jmp dword [@f + eax*4]
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align 4
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@@:
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dd .unfilter_none
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dd .unfilter_sub
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dd .unfilter_up
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dd .unfilter_average
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dd .unfilter_paeth
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.unfilter_sub:
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mov edi, [.bytes_per_pixel]
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add esi, edi
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sub ebx, edi
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jbe .next_scanline
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neg edi
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@@:
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mov al, [esi+edi]
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add [esi], al
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add esi, 1
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sub ebx, 1
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jnz @b
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jmp .next_scanline
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.unfilter_up:
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cmp edx, [.height]
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jz .unfilter_none
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lea edi, [ebx+1]
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neg edi
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@@:
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mov al, [esi+edi]
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add [esi], al
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add esi, 1
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sub ebx, 1
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jnz @b
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jmp .next_scanline
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.unfilter_average:
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mov edi, [.bytes_per_pixel]
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cmp edx, [.height]
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jz .unfilter_average_firstline
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push edx
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lea edx, [ebx+1]
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neg edx
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sub ebx, edi
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@@:
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mov al, [esi+edx]
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shr al, 1
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add [esi], al
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add esi, 1
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sub edi, 1
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jnz @b
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mov edi, [.bytes_per_pixel]
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neg edi
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test ebx, ebx
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jz .unfilter_average_done
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@@:
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mov al, [esi+edx]
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add al, [esi+edi]
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rcr al, 1
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add [esi], al
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add esi, 1
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sub ebx, 1
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jnz @b
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.unfilter_average_done:
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pop edx
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jmp .next_scanline
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.unfilter_average_firstline:
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mov edi, [.bytes_per_pixel]
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add esi, edi
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sub ebx, edi
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jbe .next_scanline
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neg edi
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@@:
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mov al, [esi+edi]
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shr al, 1
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add [esi], al
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add esi, 1
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sub ebx, 1
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jnz @b
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jmp .unfilter_none
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.unfilter_paeth:
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cmp edx, [.height]
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jz .unfilter_sub
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push edx
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lea edx, [ebx+1]
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mov edi, [.bytes_per_pixel]
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neg edx
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sub ebx, edi
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@@:
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mov al, [esi+edx]
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add [esi], al
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add esi, 1
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sub edi, 1
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jnz @b
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mov edi, [.bytes_per_pixel]
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neg edi
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test ebx, ebx
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jz .unfilter_paeth_done
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push ecx
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@@:
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push ebx
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; PaethPredictor(Raw(x-bpp) = a, Prior(x) = b, Prior(x-bpp) = c)
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movzx eax, byte [esi+edi]
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mov [.paeth_a], eax
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movzx ecx, byte [esi+edx]
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add edi, edx
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mov [.paeth_b], ecx
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add ecx, eax
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movzx eax, byte [esi+edi]
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mov [.paeth_c], eax
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sub ecx, eax ; ecx = a + b - c = p
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; calculate pa = abs(p-a), pb = abs(p-b), pc = abs(p-c)
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mov ebx, ecx
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sub ebx, eax ; ebx = p - c
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cmp ebx, 80000000h
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sbb eax, eax ; eax = (p < c) ? 0 : 0xFFFFFFF
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not eax ; eax = (p < c) ? 0xFFFFFFFF : 0
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and eax, ebx ; eax = (p < c) ? p - c : 0
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sub ebx, eax
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sub ebx, eax ; ebx = abs(p-c)
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mov [.paeth_pc], ebx
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mov ebx, ecx
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sub ebx, [.paeth_a]
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cmp ebx, 80000000h
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sbb eax, eax
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not eax
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and eax, ebx
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sub ebx, eax
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sub ebx, eax
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mov [.paeth_pa], ebx
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mov ebx, ecx
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sub ebx, [.paeth_b]
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cmp ebx, 80000000h
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sbb eax, eax
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not eax
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and eax, ebx
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sub ebx, eax
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sub ebx, eax
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;mov [.paeth_pb], ebx
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; select closest value
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push edx
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mov edx, [.paeth_b]
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sub edx, [.paeth_a]
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sub ebx, [.paeth_pa]
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sbb ecx, ecx ; ecx = (pa > pb) ? 0xFFFFFFFF : 0
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sbb eax, eax ; eax = (pa > pb) ? 0xFFFFFFFF : 0
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and ecx, ebx ; ecx = (pa > pb) ? pb - pa : 0
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and eax, edx ; eax = (pa > pb) ? b - a : 0
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add ecx, [.paeth_pa] ; ecx = (pa > pb) ? pb : pa = min(pa,pb)
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add eax, [.paeth_a] ; eax = (pa > pb) ? b : a
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mov edx, [.paeth_c]
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sub edx, eax
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sub [.paeth_pc], ecx
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sbb ebx, ebx ; ebx = (min(pa,pb) <= pc) ? 0 : 0xFFFFFFFF
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and ebx, edx ; ebx = (min(pa,pb) <= pc) ? 0 : c - eax
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add eax, ebx
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pop edx
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add [esi], al
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pop ebx
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sub edi, edx
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add esi, 1
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sub ebx, 1
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jnz @b
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pop ecx
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.unfilter_paeth_done:
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pop edx
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jmp .next_scanline
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.unfilter_none:
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add esi, ebx
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.next_scanline:
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sub edx, 1
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jnz .unfilter_loop_e
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.unfilter_done:
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; unfiltering done, now convert to raw data
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pop ebx esi
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push esi
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mov edx, [.height]
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mov eax, [.image]
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mov edi, [eax + Image.Data]
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cmp [.color_type], 0
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jz .grayscale2
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cmp [.color_type], 2
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jz .rgb2
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cmp [.color_type], 3
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jz .palette2
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cmp [.color_type], 4
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jz .grayscale_alpha2
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.rgb_alpha2:
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cmp [.bit_depth], 16
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jz .rgb_alpha2_16bit
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.rgb_alpha2.next:
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mov ecx, [.scanline_len]
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sub ebx, 1
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jc .convert_done
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add esi, 1
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sub ebx, ecx
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jc .convert_done
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@@:
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mov al, [esi+2]
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mov [edi], al
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mov al, [esi+1]
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mov [edi+1], al
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mov al, [esi]
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mov [edi+2], al
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mov al, [esi+3]
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mov [edi+3], al
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add esi, 4
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add edi, 4
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sub ecx, 4
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jnz @b
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sub edx, 1
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jnz .rgb_alpha2.next
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jmp .convert_done
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.rgb_alpha2_16bit:
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mov ecx, [.scanline_len]
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sub ebx, 1
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jc .convert_done
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add esi, 1
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sub ebx, ecx
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jc .convert_done
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.rgb_alpha2.loop:
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; convert 16 bit sample to 8 bit sample
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macro convert_16_to_8
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{
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local .l1,.l2
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xor ah, 0x80
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js .l1
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cmp al, ah
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adc al, 0
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jmp .l2
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.l1:
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cmp ah, al
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sbb al, 0
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|
.l2:
|
|
}
|
|
|
|
mov ax, [esi+4]
|
|
convert_16_to_8
|
|
mov [edi], al
|
|
mov ax, [esi+2]
|
|
convert_16_to_8
|
|
mov [edi+1], al
|
|
mov ax, [esi]
|
|
convert_16_to_8
|
|
mov [edi+2], al
|
|
;mov ax, [esi+6]
|
|
;convert_16_to_8
|
|
;mov [edi+3], al
|
|
add esi, 8
|
|
add edi, 4
|
|
sub ecx, 8
|
|
jnz .rgb_alpha2.loop
|
|
sub edx, 1
|
|
jnz .rgb_alpha2_16bit
|
|
jmp .convert_done
|
|
.grayscale2:
|
|
push edi edx
|
|
mov edi, [eax + Image.Palette]
|
|
mov ecx, [.bit_depth]
|
|
cmp cl, 16
|
|
jnz @f
|
|
mov cl, 8
|
|
@@:
|
|
push 1
|
|
pop eax
|
|
shl eax, cl
|
|
xchg eax, ecx
|
|
mov edx, 0x010101
|
|
cmp al, 8
|
|
jz .graypal_common
|
|
mov edx, 0x111111
|
|
cmp al, 4
|
|
jz .graypal_common
|
|
mov edx, 0x555555
|
|
cmp al, 2
|
|
jz .graypal_common
|
|
mov edx, 0xFFFFFF
|
|
.graypal_common:
|
|
xor eax, eax
|
|
@@:
|
|
stosd
|
|
add eax, edx
|
|
loop @b
|
|
pop edx edi
|
|
cmp [.bit_depth], 16
|
|
jz .grayscale2_16bit
|
|
.palette2:
|
|
cmp [.bit_depth], 1
|
|
jz .palette2_1bit
|
|
cmp [.bit_depth], 2
|
|
jz .palette2_2bit
|
|
cmp [.bit_depth], 4
|
|
jz .palette2_4bit
|
|
.palette2_8bit:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
push ecx
|
|
shr ecx, 2
|
|
rep movsd
|
|
pop ecx
|
|
and ecx, 3
|
|
rep movsb
|
|
sub edx, 1
|
|
jnz .palette2_8bit
|
|
jmp .convert_done
|
|
.palette2_4bit:
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, [.scanline_len]
|
|
jc .convert_done
|
|
push edx
|
|
mov ecx, [.width]
|
|
@@:
|
|
mov al, [esi]
|
|
add esi, 1
|
|
mov dl, al
|
|
shr al, 4
|
|
and dl, 0xF
|
|
mov [edi], al
|
|
sub ecx, 1
|
|
jz @f
|
|
mov [edi+1], dl
|
|
add edi, 2
|
|
sub ecx, 1
|
|
jnz @b
|
|
sub edi, 1
|
|
@@:
|
|
pop edx
|
|
add edi, 1
|
|
sub edx, 1
|
|
jnz .palette2_4bit
|
|
jmp .convert_done
|
|
.palette2_2bit:
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, [.scanline_len]
|
|
jc .convert_done
|
|
push edx
|
|
mov ecx, [.width]
|
|
@@:
|
|
mov al, [esi]
|
|
add esi, 1
|
|
mov dl, al
|
|
shr al, 6
|
|
and dl, not 11000000b
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
mov al, dl
|
|
shr dl, 4
|
|
and al, not 00110000b
|
|
mov [edi], dl
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
mov dl, al
|
|
shr al, 2
|
|
and dl, not 00001100b
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
mov [edi], dl
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jnz @b
|
|
@@:
|
|
pop edx
|
|
sub edx, 1
|
|
jnz .palette2_2bit
|
|
jmp .convert_done
|
|
.palette2_1bit:
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, [.scanline_len]
|
|
jc .convert_done
|
|
push edx
|
|
mov ecx, [.width]
|
|
@@:
|
|
mov al, [esi]
|
|
add esi, 1
|
|
repeat 3
|
|
mov dl, al
|
|
shr al, 9-%*2
|
|
and dl, not (1 shl (9-%*2))
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
mov al, dl
|
|
shr dl, 8-%*2
|
|
and al, not (1 shl (8-%*2))
|
|
mov [edi], dl
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
end repeat
|
|
mov dl, al
|
|
shr al, 1
|
|
and dl, not (1 shl 1)
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jz @f
|
|
mov [edi], dl
|
|
add edi, 1
|
|
sub ecx, 1
|
|
jnz @b
|
|
@@:
|
|
pop edx
|
|
sub edx, 1
|
|
jnz .palette2_1bit
|
|
jmp .convert_done
|
|
.grayscale2_16bit:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
@@:
|
|
mov ax, [esi]
|
|
add esi, 2
|
|
convert_16_to_8
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 2
|
|
jnz @b
|
|
sub edx, 1
|
|
jnz .grayscale2_16bit
|
|
jmp .convert_done
|
|
.rgb2:
|
|
cmp [.bit_depth], 16
|
|
jz .rgb2_16bit
|
|
.rgb2.next:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
@@:
|
|
mov al, [esi+2]
|
|
mov [edi], al
|
|
mov al, [esi+1]
|
|
mov [edi+1], al
|
|
mov al, [esi]
|
|
mov [edi+2], al
|
|
add esi, 3
|
|
add edi, 3
|
|
sub ecx, 3
|
|
jnz @b
|
|
sub edx, 1
|
|
jnz .rgb2.next
|
|
jmp .convert_done
|
|
.rgb2_16bit:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
.rgb2.loop:
|
|
mov ax, [esi+4]
|
|
convert_16_to_8
|
|
mov [edi], al
|
|
mov ax, [esi+2]
|
|
convert_16_to_8
|
|
mov [edi+1], al
|
|
mov ax, [esi]
|
|
convert_16_to_8
|
|
mov [edi+2], al
|
|
add esi, 6
|
|
add edi, 3
|
|
sub ecx, 6
|
|
jnz .rgb2.loop
|
|
sub edx, 1
|
|
jnz .rgb2_16bit
|
|
jmp .convert_done
|
|
.grayscale_alpha2:
|
|
cmp [.bit_depth], 16
|
|
jz .grayscale_alpha2_16bit
|
|
.grayscale_alpha2.next:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
@@:
|
|
mov al, [esi]
|
|
mov [edi], al
|
|
add esi, 2
|
|
add edi, 1
|
|
sub ecx, 2
|
|
jnz @b
|
|
sub edx, 1
|
|
jnz .grayscale_alpha2.next
|
|
jmp .convert_done
|
|
.grayscale_alpha2_16bit:
|
|
mov ecx, [.scanline_len]
|
|
sub ebx, 1
|
|
jc .convert_done
|
|
add esi, 1
|
|
sub ebx, ecx
|
|
jc .convert_done
|
|
@@:
|
|
mov ax, [esi]
|
|
add esi, 4
|
|
convert_16_to_8
|
|
mov [edi], al
|
|
add edi, 1
|
|
sub ecx, 4
|
|
jnz @b
|
|
sub edx, 1
|
|
jnz .grayscale_alpha2_16bit
|
|
.convert_done:
|
|
pop ecx
|
|
mcall 68, 13
|
|
mov esi, [.cur_chunk_ptr]
|
|
add esi, [.cur_chunk_size]
|
|
push [.length]
|
|
jmp .next_chunk
|
|
|
|
.deflate_callback:
|
|
mov ebp, [esp+4]
|
|
mov ebx, [esp+8]
|
|
xor eax, eax
|
|
mov esi, [.cur_chunk_size]
|
|
mov [ebx], esi
|
|
test esi, esi
|
|
jz .deflate_callback.ret
|
|
mov eax, [.cur_chunk_ptr]
|
|
mov ecx, [.length]
|
|
add esi, eax
|
|
mov [.cur_chunk_ptr], esi
|
|
and [.cur_chunk_size], 0
|
|
@@:
|
|
sub ecx, 12
|
|
jb .deflate_callback.ret
|
|
cmp dword [esi+4+4], 'IDAT'
|
|
jnz .deflate_callback.ret
|
|
mov edx, [esi+4]
|
|
bswap edx
|
|
sub ecx, edx
|
|
jb .deflate_callback.ret
|
|
add esi, 4+8
|
|
test edx, edx
|
|
jz @b
|
|
mov [.cur_chunk_size], edx
|
|
mov [.cur_chunk_ptr], esi
|
|
mov [.length], ecx
|
|
.deflate_callback.ret:
|
|
ret 8
|
|
;endp
|
|
|
|
img.encode.png:
|
|
xor eax, eax
|
|
ret 12
|