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	mov dword[edi+png_struct.zstream.next_in],0

	mov dword[edi+png_struct.zstream.next_in],0

	mov dword[edi+png_struct.zstream.avail_in],0

	mov dword[edi+png_struct.zstream.avail_in],0

	mov dword[edi+png_struct.zstream.next_out],0

	mov dword[edi+png_struct.zstream.next_out],0

	; Now initialize if required, setting the new parameters, otherwise just

	; Now initialize if required, setting the new parameters, otherwise just

	; to a simple reset to the previous parameters.

	; to a simple reset to the previous parameters.

	mov eax,ebx

	mov eax,ebx

	add eax,compression_state.output

	add eax,compression_state.output

	mov [edi+png_struct.zstream.next_out],eax

	mov [edi+png_struct.zstream.next_out],eax

	mov eax,sizeof.compression_state.output ;1024

	mov eax,sizeof.compression_state.output ;1024

	mov [edi+png_struct.zstream.avail_out],ax

	mov [edi+png_struct.zstream.avail_out],eax

	mov [output_len],eax

	mov [output_len],eax

	.cycle0: ;do

	.cycle0: ;do

		mov eax,[avail_in]

		mov eax,[avail_in]

		mov [edi+png_struct.zstream.avail_in],eax

		mov [edi+png_struct.zstream.avail_in],eax

		cmp word[edi+png_struct.zstream.avail_out],0

		cmp dword[edi+png_struct.zstream.avail_out],0

		jne .end0 ;if (..==0)

		jne .end0 ;if (..==0)

			; Chunk data is limited to 2^31 bytes in length, so the prefix

			; Chunk data is limited to 2^31 bytes in length, so the prefix

			; length must be counted here.

			; length must be counted here.

			mov eax,[next]

			mov eax,[next]

			mov eax,[eax+png_compression_buffer.output]

			mov eax,[eax+png_compression_buffer.output]

			mov [edi+png_struct.zstream.next_out],eax

			mov [edi+png_struct.zstream.next_out],eax

			mov eax,[edi+png_struct.zbuffer_size]

			mov eax,[edi+png_struct.zbuffer_size]

			add [output_len],eax

			add [output_len],eax

			; Move 'end' to the next buffer pointer.

			; Move 'end' to the next buffer pointer.

			mov eax,[next]

			mov eax,[next]

	; There may be some space left in the last output buffer. This needs to

	; There may be some space left in the last output buffer. This needs to

	; be subtracted from output_len.

	; be subtracted from output_len.

	movzx eax,word[edi+png_struct.zstream.avail_out]

	mov eax,[edi+png_struct.zstream.avail_out]

	mov word[edi+png_struct.zstream.avail_out],0 ;safety

	mov dword[edi+png_struct.zstream.avail_out],0 ;safety

	mov eax,[output_len]

	mov eax,[output_len]

	mov [ebx+compression_state.output_len],eax

	mov [ebx+compression_state.output_len],eax

		mov eax,[edi+png_struct.zbuffer_list]

		mov eax,[edi+png_struct.zbuffer_list]

		add eax,png_compression_buffer.output

		add eax,png_compression_buffer.output

		mov [edi+png_struct.zstream.next_out],eax

		mov [edi+png_struct.zstream.next_out],eax

		mov eax,[edi+png_struct.zbuffer_size]

		mov eax,[edi+png_struct.zbuffer_size]

	.end0:

	.end0:

	; Now loop reading and writing until all the input is consumed or an error

	; Now loop reading and writing until all the input is consumed or an error

	; terminates the operation.  The _out values are maintained across calls to

	; terminates the operation.  The _out values are maintained across calls to

		; OUTPUT: write complete IDAT chunks when avail_out drops to zero. Note

		; OUTPUT: write complete IDAT chunks when avail_out drops to zero. Note

		; that these two zstream fields are preserved across the calls, therefore

		; that these two zstream fields are preserved across the calls, therefore

		; there is no need to set these up on entry to the loop.

		; there is no need to set these up on entry to the loop.

		cmp word[edi+png_struct.zstream.avail_out],0

		cmp dword[edi+png_struct.zstream.avail_out],0

		jne .end2 ;if (..==0)

		jne .end2 ;if (..==0)

			mov edx,[edi+png_struct.zbuffer_list]

			mov edx,[edi+png_struct.zbuffer_list]

			add edx,png_compression_buffer.output

			add edx,png_compression_buffer.output

			mov ecx,[edi+png_struct.zbuffer_size]

			mov ecx,[edi+png_struct.zbuffer_size]

			stdcall png_write_complete_chunk, edi, png_IDAT, edx, ecx

			stdcall png_write_complete_chunk, edi, png_IDAT, edx, ecx

			or dword[edi+png_struct.mode],PNG_HAVE_IDAT

			or dword[edi+png_struct.mode],PNG_HAVE_IDAT

			mov [edi+png_struct.zstream.avail_out],cx

			mov [edi+png_struct.zstream.avail_out],ecx

			; For SYNC_FLUSH or FINISH it is essential to keep calling zlib with

			; For SYNC_FLUSH or FINISH it is essential to keep calling zlib with

			mov edx,[edi+png_struct.zbuffer_list]

			mov edx,[edi+png_struct.zbuffer_list]

			add edx,png_compression_buffer.output

			add edx,png_compression_buffer.output

			mov ecx,[edi+png_struct.zbuffer_size]

			mov ecx,[edi+png_struct.zbuffer_size]

			sub ecx,eax

			sub ecx,eax

			;edx = data

			;edx = data

			;ecx = size

			;ecx = size

				stdcall optimize_cmf, edx, eax

				stdcall optimize_cmf, edx, eax

			@@:

			@@:

end if

end if

			stdcall png_write_complete_chunk, edi, png_IDAT, edx, ecx

			stdcall png_write_complete_chunk, edi, png_IDAT, edx, ecx

			mov word[edi+png_struct.zstream.avail_out],0

			mov dword[edi+png_struct.zstream.avail_out],0

			or dword[edi+png_struct.mode], PNG_HAVE_IDAT or PNG_AFTER_IDAT

			or dword[edi+png_struct.mode], PNG_HAVE_IDAT or PNG_AFTER_IDAT

			mov dword[edi+png_struct.zowner],0 ;Release the stream

			mov dword[edi+png_struct.zowner],0 ;Release the stream

			jmp .cycle0end

			jmp .cycle0end