forked from KolibriOS/kolibrios
1283 lines
36 KiB
NASM
1283 lines
36 KiB
NASM
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; pngget.asm - retrieval of values from info struct
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; Last changed in libpng 1.6.24 [August 4, 2016]
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; Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
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; (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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; (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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; This code is released under the libpng license.
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; For conditions of distribution and use, see the disclaimer
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; and license in png.inc
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr, uint_32 flag)
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align 4
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proc png_get_valid, png_ptr:dword, info_ptr:dword, flag:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.valid]
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and eax,[flag]
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@@:
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ret
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endp
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;png_size_t (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_rowbytes, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.rowbytes]
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@@:
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ret
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endp
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;bytepp (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_rows, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.row_pointers]
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@@:
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ret
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endp
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; Easy access to info, added in libpng-0.99
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_image_width, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.width]
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@@:
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_image_height, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.height]
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@@:
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ret
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endp
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;byte (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_bit_depth, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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movzx eax,byte[eax+png_info_def.bit_depth]
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@@:
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ret
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endp
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;byte (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_color_type, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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movzx eax,byte[eax+png_info_def.color_type]
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@@:
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ret
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endp
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;byte (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_filter_type, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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movzx eax,byte[eax+png_info_def.filter_type]
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@@:
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ret
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endp
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;byte (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_interlace_type, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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movzx eax,byte[eax+png_info_def.interlace_type]
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@@:
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ret
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endp
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;byte (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_compression_type, png_ptr:dword, info_ptr:dword
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov eax,[info_ptr]
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cmp eax,0
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je @f ;if (..!=0 || ..!=0)
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mov eax,[eax+png_info_def.compression_type]
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@@:
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_pixels_per_meter, png_ptr:dword, info_ptr:dword
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if PNG_pHYs_SUPPORTED eq 1
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov esi,[info_ptr]
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cmp esi,0
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je @f
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mov eax,[esi+png_info_def.valid]
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and eax,PNG_INFO_pHYs
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cmp eax,0
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je @f ;if (..!=0 && ..!=0 && ..!=0)
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png_debug1 1, 'in %s retrieval function', 'png_get_x_pixels_per_meter'
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cmp dword[esi+png_info_def.phys_unit_type],PNG_RESOLUTION_METER
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jne @f ;if (..==..)
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mov eax,[esi+png_info_def.x_pixels_per_unit]
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jmp .end_f
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@@:
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end if
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xor eax,eax
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.end_f:
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_pixels_per_meter, png_ptr:dword, info_ptr:dword
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if PNG_pHYs_SUPPORTED eq 1
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov esi,[info_ptr]
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cmp esi,0
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je @f
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mov eax,[esi+png_info_def.valid]
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and eax,PNG_INFO_pHYs
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cmp eax,0
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je @f ;if (..!=0 && ..!=0 && ..!=0)
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png_debug1 1, 'in %s retrieval function', 'png_get_y_pixels_per_meter'
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cmp dword[esi+png_info_def.phys_unit_type],PNG_RESOLUTION_METER
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jne @f ;if (..==..)
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mov eax,[esi+png_info_def.y_pixels_per_unit]
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jmp .end_f
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@@:
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end if
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xor eax,eax
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.end_f:
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_pixels_per_meter uses esi, png_ptr:dword, info_ptr:dword
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if PNG_pHYs_SUPPORTED eq 1
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mov eax,[png_ptr]
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cmp eax,0
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je @f
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mov esi,[info_ptr]
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cmp esi,0
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je @f
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mov eax,[esi+png_info_def.valid]
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and eax,PNG_INFO_pHYs
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cmp eax,0
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je @f ;if (..!=0 && ..!=0 && ..!=0)
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png_debug1 1, 'in %s retrieval function', 'png_get_pixels_per_meter'
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cmp dword[esi+png_info_def.phys_unit_type],PNG_RESOLUTION_METER
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jne @f
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mov eax,[esi+png_info_def.x_pixels_per_unit]
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cmp eax,[esi+png_info_def.y_pixels_per_unit]
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jne @f ;if (..==.. && ..==..)
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jmp .end_f
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@@:
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end if
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xor eax,eax
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.end_f:
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ret
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endp
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;float (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_pixel_aspect_ratio, png_ptr:dword, info_ptr:dword
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if PNG_READ_pHYs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_pHYs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'png_get_aspect_ratio'
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; if (info_ptr->x_pixels_per_unit != 0)
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; return ((float)((float)info_ptr->y_pixels_per_unit
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; /(float)info_ptr->x_pixels_per_unit));
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; }
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end if
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; return ((float)0.0);
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ret
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endp
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;png_fixed_point (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_pixel_aspect_ratio_fixed, png_ptr:dword, info_ptr:dword
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if PNG_READ_pHYs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_pHYs) != 0 &&
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; info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 &&
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; info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX &&
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; info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
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; {
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; png_fixed_point res;
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png_debug1 1, 'in %s retrieval function', 'png_get_aspect_ratio_fixed'
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; The following casts work because a PNG 4 byte integer only has a valid
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; range of 0..2^31-1; otherwise the cast might overflow.
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; if (png_muldiv(&res, (int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
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; (int_32)info_ptr->x_pixels_per_unit) != 0)
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; return res;
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; }
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end if
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; return 0;
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ret
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endp
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;int_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_offset_microns, png_ptr:dword, info_ptr:dword
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if PNG_oFFs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_oFFs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'png_get_x_offset_microns'
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; if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
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; return (info_ptr->x_offset);
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; }
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end if
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xor eax,eax
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ret
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endp
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;int_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_offset_microns, png_ptr:dword, info_ptr:dword
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if PNG_oFFs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_oFFs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'png_get_y_offset_microns'
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; if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
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; return (info_ptr->y_offset);
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; }
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end if
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xor eax,eax
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ret
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endp
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;int_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_offset_pixels, png_ptr:dword, info_ptr:dword
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if PNG_oFFs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_oFFs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'png_get_x_offset_pixels'
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; if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
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; return (info_ptr->x_offset);
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; }
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end if
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xor eax,eax
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ret
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endp
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;int_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_offset_pixels, png_ptr:dword, info_ptr:dword
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if PNG_oFFs_SUPPORTED eq 1
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_oFFs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'png_get_y_offset_pixels'
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; if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
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; return (info_ptr->y_offset);
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; }
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end if
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xor eax,eax
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ret
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endp
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;uint_32 (uint_32 ppm)
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align 4
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proc ppi_from_ppm, ppm:dword
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;#if 0
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; The conversion is *(2.54/100), in binary (32 digits):
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; .00000110100000001001110101001001
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; uint_32 t1001, t1101;
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; ppm >>= 1; /* .1 */
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; t1001 = ppm + (ppm >> 3); /* .1001 */
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; t1101 = t1001 + (ppm >> 1); /* .1101 */
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; ppm >>= 20; /* .000000000000000000001 */
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; t1101 += t1101 >> 15; /* .1101000000000001101 */
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; t1001 >>= 11; /* .000000000001001 */
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; t1001 += t1001 >> 12; /* .000000000001001000000001001 */
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; ppm += t1001; /* .000000000001001000001001001 */
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; ppm += t1101; /* .110100000001001110101001001 */
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; return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
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;#else
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; The argument is a PNG unsigned integer, so it is not permitted
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; to be bigger than 2^31.
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; png_fixed_point result;
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; if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (int_32)ppm, 127,
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; 5000) != 0)
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; return result;
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; Overflow.
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; return 0;
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;end if
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_pixels_per_inch, png_ptr:dword, info_ptr:dword
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stdcall png_get_pixels_per_meter, [png_ptr], [info_ptr]
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stdcall ppi_from_ppm, eax
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_pixels_per_inch, png_ptr:dword, info_ptr:dword
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stdcall png_get_x_pixels_per_meter, [png_ptr], [info_ptr]
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stdcall ppi_from_ppm, eax
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_pixels_per_inch, png_ptr:dword, info_ptr:dword
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stdcall png_get_y_pixels_per_meter, [png_ptr], [info_ptr]
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stdcall ppi_from_ppm, eax
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ret
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endp
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;png_fixed_point (png_structrp png_ptr, int_32 microns)
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align 4
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proc png_fixed_inches_from_microns, png_ptr:dword, microns:dword
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; Convert from metres * 1,000,000 to inches * 100,000, meters to
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; inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
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; Notice that this can overflow - a warning is output and 0 is
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; returned.
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stdcall png_muldiv_warn, [png_ptr], [microns], 500, 127
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ret
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endp
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;png_fixed_point (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_offset_inches_fixed, png_ptr:dword, info_ptr:dword
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stdcall png_get_x_offset_microns, [png_ptr], [info_ptr]
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stdcall png_fixed_inches_from_microns, [png_ptr], eax
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ret
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endp
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;png_fixed_point (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_offset_inches_fixed, png_ptr:dword, info_ptr:dword
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stdcall png_get_y_offset_microns, [png_ptr], [info_ptr]
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stdcall png_fixed_inches_from_microns, [png_ptr], eax
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ret
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endp
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;float (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_x_offset_inches, png_ptr:dword, info_ptr:dword
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; To avoid the overflow do the conversion directly in floating
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; point.
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; return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
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ret
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endp
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;float (png_structrp png_ptr, png_inforp info_ptr)
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align 4
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proc png_get_y_offset_inches, png_ptr:dword, info_ptr:dword
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; To avoid the overflow do the conversion directly in floating
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; point.
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; return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
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ret
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endp
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;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
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; uint_32 *res_x, uint_32 *res_y, int *unit_type)
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align 4
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proc png_get_pHYs_dpi, png_ptr:dword, info_ptr:dword, res_x:dword, res_y:dword, unit_type:dword
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; uint_32 retval = 0;
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; if (png_ptr != NULL && info_ptr != NULL &&
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; (info_ptr->valid & PNG_INFO_pHYs) != 0)
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; {
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png_debug1 1, 'in %s retrieval function', 'pHYs'
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; if (res_x != NULL)
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; {
|
|
; *res_x = info_ptr->x_pixels_per_unit;
|
|
; retval |= PNG_INFO_pHYs;
|
|
; }
|
|
|
|
; if (res_y != NULL)
|
|
; {
|
|
; *res_y = info_ptr->y_pixels_per_unit;
|
|
; retval |= PNG_INFO_pHYs;
|
|
; }
|
|
|
|
; if (unit_type != NULL)
|
|
; {
|
|
; *unit_type = (int)info_ptr->phys_unit_type;
|
|
; retval |= PNG_INFO_pHYs;
|
|
|
|
; if (*unit_type == 1)
|
|
; {
|
|
; if (res_x != NULL) *res_x = (uint_32)(*res_x * .0254 + .50);
|
|
; if (res_y != NULL) *res_y = (uint_32)(*res_y * .0254 + .50);
|
|
; }
|
|
; }
|
|
; }
|
|
|
|
; return (retval);
|
|
ret
|
|
endp
|
|
|
|
; png_get_channels really belongs in here, too, but it's been around longer
|
|
|
|
;byte (png_structrp png_ptr, png_inforp info_ptr)
|
|
align 4
|
|
proc png_get_channels, png_ptr:dword, info_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[info_ptr]
|
|
cmp eax,0
|
|
je @f ;if (..!=0 || ..!=0)
|
|
movzx eax,byte[eax+png_info_def.channels]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
;bytep (png_structrp png_ptr, png_inforp info_ptr)
|
|
align 4
|
|
proc png_get_signature, png_ptr:dword, info_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[info_ptr]
|
|
cmp eax,0
|
|
je @f ;if (..!=0 || ..!=0)
|
|
movzx eax,byte[eax+png_info_def.signature]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_color_16p *background)
|
|
align 4
|
|
proc png_get_bKGD, png_ptr:dword, info_ptr:dword, background:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_bKGD) != 0 &&
|
|
; background != NULL)
|
|
; {
|
|
png_debug1 1, 'in %s retrieval function', 'bKGD'
|
|
|
|
; *background = &(info_ptr->background);
|
|
; return (PNG_INFO_bKGD);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;if PNG_cHRM_SUPPORTED
|
|
; The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
|
|
; same time to correct the rgb grayscale coefficient defaults obtained from the
|
|
; cHRM chunk in 1.5.4
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; double *white_x, double *white_y, double *red_x, double *red_y,
|
|
; double *green_x, double *green_y, double *blue_x, double *blue_y)
|
|
align 4
|
|
proc png_get_cHRM, png_ptr:dword, info_ptr:dword, white_x:dword, white_y:dword, red_x:dword, red_y:dword, green_x:dword, green_y:dword, blue_x:dword, blue_y:dword
|
|
; Quiet API change: this code used to only return the end points if a cHRM
|
|
; chunk was present, but the end points can also come from iCCP or sRGB
|
|
; chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
|
|
; the png_set_ APIs merely check that set end points are mutually
|
|
; consistent.
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
|
|
; {
|
|
png_debug1 1, 'in %s retrieval function', 'cHRM'
|
|
|
|
; if (white_x != NULL)
|
|
; *white_x = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
|
|
; if (white_y != NULL)
|
|
; *white_y = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
|
|
; if (red_x != NULL)
|
|
; *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
|
|
; "cHRM red X");
|
|
; if (red_y != NULL)
|
|
; *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
|
|
; "cHRM red Y");
|
|
; if (green_x != NULL)
|
|
; *green_x = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
|
|
; if (green_y != NULL)
|
|
; *green_y = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
|
|
; if (blue_x != NULL)
|
|
; *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
|
|
; "cHRM blue X");
|
|
; if (blue_y != NULL)
|
|
; *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
|
|
; "cHRM blue Y");
|
|
; return (PNG_INFO_cHRM);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; double *red_X, double *red_Y, double *red_Z, double *green_X,
|
|
; double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
|
|
; double *blue_Z)
|
|
align 4
|
|
proc png_get_cHRM_XYZ, png_ptr:dword, info_ptr:dword, red_X:dword, red_Y:dword, red_Z:dword, green_X:dword, green_Y:dword, green_Z:dword, blue_X:dword, blue_Y:dword, blue_Z:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
|
|
; {
|
|
png_debug1 1, 'in %s retrieval function', 'cHRM_XYZ(float)'
|
|
|
|
; if (red_X != NULL)
|
|
; *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
|
|
; "cHRM red X");
|
|
; if (red_Y != NULL)
|
|
; *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
|
|
; "cHRM red Y");
|
|
; if (red_Z != NULL)
|
|
; *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
|
|
; "cHRM red Z");
|
|
; if (green_X != NULL)
|
|
; *green_X = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
|
|
; if (green_Y != NULL)
|
|
; *green_Y = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
|
|
; if (green_Z != NULL)
|
|
; *green_Z = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
|
|
; if (blue_X != NULL)
|
|
; *blue_X = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
|
|
; if (blue_Y != NULL)
|
|
; *blue_Y = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
|
|
; if (blue_Z != NULL)
|
|
; *blue_Z = png_float(png_ptr,
|
|
; info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
|
|
; return (PNG_INFO_cHRM);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
|
|
; png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
|
|
; png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
|
|
; png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
|
|
; png_fixed_point *int_blue_Z)
|
|
align 4
|
|
proc png_get_cHRM_XYZ_fixed, png_ptr:dword, info_ptr:dword, int_red_X:dword, int_red_Y:dword, int_red_Z:dword, int_green_X:dword, int_green_Y:dword, int_green_Z:dword, int_blue_X:dword, int_blue_Y:dword, int_blue_Z:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
|
|
; {
|
|
png_debug1 1, 'in %s retrieval function', 'cHRM_XYZ'
|
|
|
|
; if (int_red_X != NULL)
|
|
; *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
|
|
; if (int_red_Y != NULL)
|
|
; *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y;
|
|
; if (int_red_Z != NULL)
|
|
; *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z;
|
|
; if (int_green_X != NULL)
|
|
; *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X;
|
|
; if (int_green_Y != NULL)
|
|
; *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y;
|
|
; if (int_green_Z != NULL)
|
|
; *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z;
|
|
; if (int_blue_X != NULL)
|
|
; *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X;
|
|
; if (int_blue_Y != NULL)
|
|
; *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
|
|
; if (int_blue_Z != NULL)
|
|
; *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
|
|
; return (PNG_INFO_cHRM);
|
|
; }
|
|
|
|
xor eax,eax
|
|
.end_f:
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
|
|
; png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
|
|
; png_fixed_point *blue_x, png_fixed_point *blue_y)
|
|
align 4
|
|
proc png_get_cHRM_fixed, png_ptr:dword, info_ptr:dword, white_x:dword, white_y:dword, red_x:dword, red_y:dword, green_x:dword, green_y:dword, blue_x:dword, blue_y:dword
|
|
png_debug1 1, 'in %s retrieval function', 'cHRM'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
|
|
; {
|
|
; if (white_x != NULL)
|
|
; *white_x = info_ptr->colorspace.end_points_xy.whitex;
|
|
; if (white_y != NULL)
|
|
; *white_y = info_ptr->colorspace.end_points_xy.whitey;
|
|
; if (red_x != NULL)
|
|
; *red_x = info_ptr->colorspace.end_points_xy.redx;
|
|
; if (red_y != NULL)
|
|
; *red_y = info_ptr->colorspace.end_points_xy.redy;
|
|
; if (green_x != NULL)
|
|
; *green_x = info_ptr->colorspace.end_points_xy.greenx;
|
|
; if (green_y != NULL)
|
|
; *green_y = info_ptr->colorspace.end_points_xy.greeny;
|
|
; if (blue_x != NULL)
|
|
; *blue_x = info_ptr->colorspace.end_points_xy.bluex;
|
|
; if (blue_y != NULL)
|
|
; *blue_y = info_ptr->colorspace.end_points_xy.bluey;
|
|
; return (PNG_INFO_cHRM);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
;end if
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_fixed_point *file_gamma)
|
|
align 4
|
|
proc png_get_gAMA_fixed, png_ptr:dword, info_ptr:dword, file_gamma:dword
|
|
png_debug1 1, 'in %s retrieval function', 'gAMA'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
|
|
; file_gamma != NULL)
|
|
; {
|
|
; *file_gamma = info_ptr->colorspace.gamma;
|
|
; return (PNG_INFO_gAMA);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr, double *file_gamma)
|
|
align 4
|
|
proc png_get_gAMA, png_ptr:dword, info_ptr:dword, file_gamma:dword
|
|
png_debug1 1, 'in %s retrieval function', 'gAMA(float)'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
|
|
; file_gamma != NULL)
|
|
; {
|
|
; *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
|
|
; "png_get_gAMA");
|
|
; return (PNG_INFO_gAMA);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr, int *file_srgb_intent)
|
|
align 4
|
|
proc png_get_sRGB, png_ptr:dword, info_ptr:dword, file_srgb_intent:dword
|
|
png_debug1 1, 'in %s retrieval function', 'sRGB'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL)
|
|
; {
|
|
; *file_srgb_intent = info_ptr->colorspace.rendering_intent;
|
|
; return (PNG_INFO_sRGB);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_charpp name, int *compression_type, bytepp profile, uint_32 *proflen)
|
|
align 4
|
|
proc png_get_iCCP, png_ptr:dword, info_ptr:dword, name:dword, compression_type:dword, profile:dword, proflen:dword
|
|
png_debug1 1, 'in %s retrieval function', 'iCCP'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_iCCP) != 0 &&
|
|
; name != NULL && compression_type != NULL && profile != NULL &&
|
|
; proflen != NULL)
|
|
; {
|
|
; *name = info_ptr->iccp_name;
|
|
; *profile = info_ptr->iccp_profile;
|
|
; *proflen = png_get_uint_32(info_ptr->iccp_profile);
|
|
; This is somewhat irrelevant since the profile data returned has
|
|
; actually been uncompressed.
|
|
|
|
; *compression_type = PNG_COMPRESSION_TYPE_BASE;
|
|
; return (PNG_INFO_iCCP);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;int (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_sPLT_tpp spalettes)
|
|
align 4
|
|
proc png_get_sPLT, png_ptr:dword, info_ptr:dword, spalettes:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
|
|
; {
|
|
; *spalettes = info_ptr->splt_palettes;
|
|
; return info_ptr->splt_palettes_num;
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; uint_16p hist)
|
|
align 4
|
|
proc png_get_hIST, png_ptr:dword, info_ptr:dword, hist:dword
|
|
png_debug1 1, 'in %s retrieval function', 'hIST'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_hIST) != 0 && hist != NULL)
|
|
; {
|
|
; *hist = info_ptr->hist;
|
|
; return (PNG_INFO_hIST);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; uint_32 *width, uint_32 *height, int *bit_depth,
|
|
; int *color_type, int *interlace_type, int *compression_type,
|
|
; int *filter_type)
|
|
align 4
|
|
proc png_get_IHDR, png_ptr:dword, info_ptr:dword,\
|
|
width:dword, height:dword, bit_depth:dword, color_type:dword,\
|
|
interlace_type:dword, compression_type:dword, filter_type:dword
|
|
png_debug1 1, 'in %s retrieval function', 'IHDR'
|
|
|
|
; if (png_ptr == NULL || info_ptr == NULL)
|
|
; return (0);
|
|
|
|
; if (width != NULL)
|
|
; *width = info_ptr->width;
|
|
|
|
; if (height != NULL)
|
|
; *height = info_ptr->height;
|
|
|
|
; if (bit_depth != NULL)
|
|
; *bit_depth = info_ptr->bit_depth;
|
|
|
|
; if (color_type != NULL)
|
|
; *color_type = info_ptr->color_type;
|
|
|
|
; if (compression_type != NULL)
|
|
; *compression_type = info_ptr->compression_type;
|
|
|
|
; if (filter_type != NULL)
|
|
; *filter_type = info_ptr->filter_type;
|
|
|
|
; if (interlace_type != NULL)
|
|
; *interlace_type = info_ptr->interlace_type;
|
|
|
|
; This is redundant if we can be sure that the info_ptr values were all
|
|
; assigned in png_set_IHDR(). We do the check anyhow in case an
|
|
; application has ignored our advice not to mess with the members
|
|
; of info_ptr directly.
|
|
|
|
; png_check_IHDR(png_ptr, info_ptr->width, info_ptr->height,
|
|
; info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
|
|
; info_ptr->compression_type, info_ptr->filter_type);
|
|
|
|
xor eax,eax
|
|
inc eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; int_32 *offset_x, int_32 *offset_y, int *unit_type)
|
|
align 4
|
|
proc png_get_oFFs, png_ptr:dword, info_ptr:dword, offset_x:dword, offset_y:dword, unit_type:dword
|
|
png_debug1 1, 'in %s retrieval function', 'oFFs'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_oFFs) != 0 &&
|
|
; offset_x != NULL && offset_y != NULL && unit_type != NULL)
|
|
; {
|
|
; *offset_x = info_ptr->x_offset;
|
|
; *offset_y = info_ptr->y_offset;
|
|
; *unit_type = (int)info_ptr->offset_unit_type;
|
|
; return (PNG_INFO_oFFs);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; charp *purpose, int_32 *X0, int_32 *X1, int *type, int *nparams,
|
|
; charp *units, charpp *params)
|
|
align 4
|
|
proc png_get_pCAL, png_ptr:dword, info_ptr:dword, purpose:dword, X0:dword, X1:dword, type:dword, nparams:dword, units:dword, params:dword
|
|
png_debug1 1, 'in %s retrieval function', 'pCAL'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_pCAL) != 0 &&
|
|
; purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
|
|
; nparams != NULL && units != NULL && params != NULL)
|
|
; {
|
|
; *purpose = info_ptr->pcal_purpose;
|
|
; *X0 = info_ptr->pcal_X0;
|
|
; *X1 = info_ptr->pcal_X1;
|
|
; *type = (int)info_ptr->pcal_type;
|
|
; *nparams = (int)info_ptr->pcal_nparams;
|
|
; *units = info_ptr->pcal_units;
|
|
; *params = info_ptr->pcal_params;
|
|
; return (PNG_INFO_pCAL);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; int *unit, png_fixed_point *width, png_fixed_point *height)
|
|
align 4
|
|
proc png_get_sCAL_fixed, png_ptr:dword, info_ptr:dword, unit:dword, width:dword, height:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_sCAL) != 0)
|
|
; {
|
|
; *unit = info_ptr->scal_unit;
|
|
;TODO: make this work without FP support; the API is currently eliminated
|
|
; if neither floating point APIs nor internal floating point arithmetic
|
|
; are enabled.
|
|
|
|
; *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
|
|
; *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
|
|
; "sCAL height");
|
|
; return (PNG_INFO_sCAL);
|
|
; }
|
|
|
|
; return(0);
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; int *unit, double *width, double *height)
|
|
align 4
|
|
proc png_get_sCAL, png_ptr:dword, info_ptr:dword, unit:dword, width:dword, height:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_sCAL) != 0)
|
|
; {
|
|
; *unit = info_ptr->scal_unit;
|
|
; *width = atof(info_ptr->scal_s_width);
|
|
; *height = atof(info_ptr->scal_s_height);
|
|
; return (PNG_INFO_sCAL);
|
|
; }
|
|
|
|
; return(0);
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; int *unit, charpp width, charpp height)
|
|
align 4
|
|
proc png_get_sCAL_s, png_ptr:dword, info_ptr:dword, unit:dword, width:dword, height:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_sCAL) != 0)
|
|
; {
|
|
; *unit = info_ptr->scal_unit;
|
|
; *width = info_ptr->scal_s_width;
|
|
; *height = info_ptr->scal_s_height;
|
|
; return (PNG_INFO_sCAL);
|
|
; }
|
|
|
|
xor eax,eax
|
|
.end_f:
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; uint_32 *res_x, uint_32 *res_y, int *unit_type)
|
|
align 4
|
|
proc png_get_pHYs, png_ptr:dword, info_ptr:dword, res_x:dword, res_y:dword, unit_type:dword
|
|
; uint_32 retval = 0;
|
|
|
|
png_debug1 1, 'in %s retrieval function', 'pHYs'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_pHYs) != 0)
|
|
; {
|
|
; if (res_x != NULL)
|
|
; {
|
|
; *res_x = info_ptr->x_pixels_per_unit;
|
|
; retval |= PNG_INFO_pHYs;
|
|
; }
|
|
|
|
; if (res_y != NULL)
|
|
; {
|
|
; *res_y = info_ptr->y_pixels_per_unit;
|
|
; retval |= PNG_INFO_pHYs;
|
|
; }
|
|
|
|
; if (unit_type != NULL)
|
|
; {
|
|
; *unit_type = (int)info_ptr->phys_unit_type;
|
|
; retval |= PNG_INFO_pHYs;
|
|
; }
|
|
; }
|
|
|
|
; return (retval);
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_colorp *palette, int *num_palette)
|
|
align 4
|
|
proc png_get_PLTE, png_ptr:dword, info_ptr:dword, palette:dword, num_palette:dword
|
|
png_debug1 1, 'in %s retrieval function', 'PLTE'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_PLTE) != 0 && palette != NULL)
|
|
; {
|
|
; *palette = info_ptr->palette;
|
|
; *num_palette = info_ptr->num_palette;
|
|
; png_debug1(3, "num_palette = %d", *num_palette);
|
|
; return (PNG_INFO_PLTE);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr, png_color_8p *sig_bit)
|
|
align 4
|
|
proc png_get_sBIT, png_ptr:dword, info_ptr:dword, sig_bit:dword
|
|
png_debug1 1, 'in %s retrieval function', 'sBIT'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_sBIT) != 0 && sig_bit != NULL)
|
|
; {
|
|
; *sig_bit = &(info_ptr->sig_bit);
|
|
; return (PNG_INFO_sBIT);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;int (png_structrp png_ptr, png_inforp info_ptr, png_textp *text_ptr, int *num_text)
|
|
align 4
|
|
proc png_get_text, png_ptr:dword, info_ptr:dword, text_ptr:dword, num_text:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
|
|
; {
|
|
; png_debug1(1, "in 0x%lx retrieval function",
|
|
; (unsigned long)png_ptr->chunk_name);
|
|
|
|
; if (text_ptr != NULL)
|
|
; *text_ptr = info_ptr->text;
|
|
|
|
; if (num_text != NULL)
|
|
; *num_text = info_ptr->num_text;
|
|
|
|
; return info_ptr->num_text;
|
|
; }
|
|
|
|
; if (num_text != NULL)
|
|
; *num_text = 0;
|
|
|
|
; return(0);
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_timep *mod_time)
|
|
align 4
|
|
proc png_get_tIME, png_ptr:dword, info_ptr:dword, mod_time:dword
|
|
png_debug1 1, 'in %s retrieval function', 'tIME'
|
|
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_tIME) != 0 && mod_time != NULL)
|
|
; {
|
|
; *mod_time = &(info_ptr->mod_time);
|
|
; return (PNG_INFO_tIME);
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr, png_inforp info_ptr,
|
|
; bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
|
|
align 4
|
|
proc png_get_tRNS, png_ptr:dword, info_ptr:dword, trans_alpha:dword, num_trans:dword, trans_color:dword
|
|
; uint_32 retval = 0;
|
|
; if (png_ptr != NULL && info_ptr != NULL &&
|
|
; (info_ptr->valid & PNG_INFO_tRNS) != 0)
|
|
; {
|
|
png_debug1 1, 'in %s retrieval function', 'tRNS'
|
|
|
|
; if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
|
|
; {
|
|
; if (trans_alpha != NULL)
|
|
; {
|
|
; *trans_alpha = info_ptr->trans_alpha;
|
|
; retval |= PNG_INFO_tRNS;
|
|
; }
|
|
|
|
; if (trans_color != NULL)
|
|
; *trans_color = &(info_ptr->trans_color);
|
|
; }
|
|
|
|
; else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
|
|
; {
|
|
; if (trans_color != NULL)
|
|
; {
|
|
; *trans_color = &(info_ptr->trans_color);
|
|
; retval |= PNG_INFO_tRNS;
|
|
; }
|
|
|
|
; if (trans_alpha != NULL)
|
|
; *trans_alpha = NULL;
|
|
; }
|
|
|
|
; if (num_trans != NULL)
|
|
; {
|
|
; *num_trans = info_ptr->num_trans;
|
|
; retval |= PNG_INFO_tRNS;
|
|
; }
|
|
; }
|
|
|
|
; return (retval);
|
|
ret
|
|
endp
|
|
|
|
;int (png_structrp png_ptr, png_inforp info_ptr,
|
|
; png_unknown_chunkpp unknowns)
|
|
align 4
|
|
proc png_get_unknown_chunks, png_ptr:dword, info_ptr:dword, unknowns:dword
|
|
; if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
|
|
; {
|
|
; *unknowns = info_ptr->unknown_chunks;
|
|
; return info_ptr->unknown_chunks_num;
|
|
; }
|
|
|
|
xor eax,eax
|
|
ret
|
|
endp
|
|
|
|
;byte (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_rgb_to_gray_status, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.rgb_to_gray_status]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
;voidp (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_user_chunk_ptr, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.user_chunk_ptr]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
;png_size_t (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_compression_buffer_size uses ebx, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je .end_f ;if (..==0) return 0
|
|
|
|
if PNG_WRITE_SUPPORTED eq 1
|
|
mov ebx,[eax+png_struct.mode]
|
|
and ebx,PNG_IS_READ_STRUCT
|
|
cmp ebx,0
|
|
; if (..!=0)
|
|
end if
|
|
; {
|
|
if PNG_SEQUENTIAL_READ_SUPPORTED eq 1
|
|
; return png_ptr->IDAT_read_size;
|
|
else
|
|
mov eax,PNG_IDAT_READ_SIZE
|
|
jmp .end_f
|
|
end if
|
|
; }
|
|
|
|
if PNG_WRITE_SUPPORTED eq 1
|
|
; else
|
|
; return png_ptr->zbuffer_size;
|
|
end if
|
|
.end_f:
|
|
ret
|
|
endp
|
|
|
|
; These functions were added to libpng 1.2.6 and were enabled
|
|
; by default in libpng-1.4.0
|
|
;uint_32 (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_user_width_max, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.user_width_max]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_user_height_max, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.user_height_max]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; This function was added to libpng 1.4.0
|
|
;uint_32 (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_chunk_cache_max, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.user_chunk_cache_max]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; This function was added to libpng 1.4.1
|
|
;png_alloc_size_t (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_chunk_malloc_max, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
mov eax,[eax+png_struct.user_chunk_malloc_max]
|
|
@@:
|
|
ret
|
|
endp
|
|
|
|
; These functions were added to libpng 1.4.0
|
|
;uint_32 (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_io_state, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
mov eax,[eax+png_struct.io_state]
|
|
ret
|
|
endp
|
|
|
|
;uint_32 (png_structrp png_ptr)
|
|
align 4
|
|
proc png_get_io_chunk_type, png_ptr:dword
|
|
mov eax,[png_ptr]
|
|
mov eax,[eax+png_struct.chunk_name]
|
|
ret
|
|
endp
|
|
|
|
;int (png_const_structp png_ptr, png_const_infop info_ptr)
|
|
align 4
|
|
proc png_get_palette_max, png_ptr:dword, info_ptr:dword
|
|
mov eax,[png_ptr]
|
|
cmp eax,0
|
|
je @f
|
|
cmp dword[info_ptr],0
|
|
je @f ;if (..!=0 && ..!=0)
|
|
mov eax,[eax+png_struct.num_palette_max]
|
|
jmp .end_f
|
|
@@:
|
|
xor eax,eax
|
|
dec eax
|
|
.end_f:
|
|
ret
|
|
endp
|
|
|