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	@@:

	@@:

	ret

	ret

endp

endp

align 4

align 4

proc png_set_shift uses ecx edi, png_ptr:dword, true_bits:dword

proc png_set_shift uses ecx edi, png_ptr:dword, true_bits:dword

	png_debug 1, 'in png_set_shift'

	png_debug 1, 'in png_set_shift'

	; operation and therefore to do more checking here for a valid call.

	; operation and therefore to do more checking here for a valid call.

	mov eax,[edi+png_struct.mode]

	mov eax,[edi+png_struct.mode]

	and eax,PNG_IS_READ_STRUCT

	and eax,PNG_IS_READ_STRUCT

if PNG_READ_FILLER_SUPPORTED eq 1

if PNG_READ_FILLER_SUPPORTED eq 1

		; On read png_set_filler is always valid, regardless of the base PNG

		; On read png_set_filler is always valid, regardless of the base PNG

		; format, because other transformations can give a format where the

		; format, because other transformations can give a format where the

		; filler code can execute (basically an 8 or 16-bit component RGB or G

		; filler code can execute (basically an 8 or 16-bit component RGB or G

		; format.)

		; format.)

	stdcall png_set_filler, edi, [filler], [filler_loc]

	stdcall png_set_filler, edi, [filler], [filler_loc]

	; The above may fail to do anything.

	; The above may fail to do anything.

	mov eax,[edi+png_struct.transformations]

	mov eax,[edi+png_struct.transformations]

	and eax,PNG_FILLER

	and eax,PNG_FILLER

		or dword[edi+png_struct.transformations],PNG_ADD_ALPHA

		or dword[edi+png_struct.transformations],PNG_ADD_ALPHA

.end_f:

.end_f:

	ret

	ret

endp

endp

	mov edi,[png_ptr]

	mov edi,[png_ptr]

	cmp edi,0

	cmp edi,0

	je .end_f ;if (..==0) return

	je .end_f ;if (..==0) return

.end_f:

.end_f:

	ret

	ret

endp

endp

	mov edi,[png_ptr]

	mov edi,[png_ptr]

	cmp edi,0

	cmp edi,0

	je .end_f ;if (..==0) return

	je .end_f ;if (..==0) return

.end_f:

.end_f:

	ret

	ret

endp

endp

	mov edi,[png_ptr]

	mov edi,[png_ptr]

	cmp edi,0

	cmp edi,0

	je .end_f ;if (..==0) return

	je .end_f ;if (..==0) return

.end_f:

.end_f:

	ret

	ret

endp

endp

if PNG_READ_USER_TRANSFORM_SUPPORTED eq 1

if PNG_READ_USER_TRANSFORM_SUPPORTED eq 1

	mov eax,[edi+png_struct.mode]

	mov eax,[edi+png_struct.mode]

	and eax,PNG_IS_READ_STRUCT

	and eax,PNG_IS_READ_STRUCT

	mov eax,[edi+png_struct.flags]

	mov eax,[edi+png_struct.flags]

	and eax,PNG_FLAG_ROW_INIT

	and eax,PNG_FLAG_ROW_INIT

		cStr ,'info change after png_start_read_image or png_read_update_info'

		cStr ,'info change after png_start_read_image or png_read_update_info'

		stdcall png_app_error, edi, eax

		stdcall png_app_error, edi, eax

		jmp .end_f

		jmp .end_f

	@@:

	@@:

end if

end if

; the user transform functions.  The application should free any memory

; the user transform functions.  The application should free any memory

; associated with this pointer before png_write_destroy and png_read_destroy

; associated with this pointer before png_write_destroy and png_read_destroy

; are called.

; are called.

align 4

align 4

proc png_get_user_transform_ptr, png_ptr:dword

proc png_get_user_transform_ptr, png_ptr:dword

	mov eax,[png_ptr]

	mov eax,[png_ptr]

	cmp eax,0

	cmp eax,0

	je @f

	je @f

		mov eax,[eax+png_struct.user_transform_ptr]

		mov eax,[eax+png_struct.user_transform_ptr]

	@@:

	@@:

	ret

	ret

endp

endp

;uint_32 (png_const_structrp png_ptr)

;uint_32 (png_structrp png_ptr)

align 4

align 4

proc png_get_current_row_number, png_ptr:dword

proc png_get_current_row_number, png_ptr:dword

	; See the comments in png.inc - this is the sub-image row when reading an

	; See the comments in png.inc - this is the sub-image row when reading an

.end_f:

.end_f:

	ret

	ret

endp

endp

align 4

align 4

proc png_get_current_pass_number, png_ptr:dword

proc png_get_current_pass_number, png_ptr:dword

	mov eax,[png_ptr]

	mov eax,[png_ptr]

	cmp eax,0

	cmp eax,0

	je @f ;if (..!=0)

	je @f ;if (..!=0)