/*    Ming, an SWF output library    Copyright (C) 2002  Opaque Industries - http://www.opaque.net/    This library is free software; you can redistribute it and/or    modify it under the terms of the GNU Lesser General Public    License as published by the Free Software Foundation; either    version 2.1 of the License, or (at your option) any later version.    This library is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU    Lesser General Public License for more details.    You should have received a copy of the GNU Lesser General Public    License along with this library; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*//* $Id: block.c,v 1.17 2008/06/25 12:36:37 krechert Exp $ */#include <math.h>#include <stdlib.h>#include "block.h"#include "method.h"#include "libming.h"voidSWFBlock_setDefined(SWFBlock block){	block->isDefined = TRUE;}byteSWFBlock_isDefined(SWFBlock block){	return block->isDefined;}intSWFBlock_getLength(SWFBlock block){	return block->length;}voiddestroySWFBlock(SWFBlock block){	if ( block->dtor )		block->dtor(block);	else		free(block);}intcompleteSWFBlock(SWFBlock block){	switch(block->type)	{	case SWF_UNUSEDBLOCK:	case SWF_MINGFONT:		return 0;	default:		break;	}			if ( !block->completed )	{		if ( block->complete )			block->length = block->complete(block);		block->completed = TRUE;	}	if (block->type == SWF_PREBUILT)		return block->length;	if ( block->length > 62 ||			 block->type == SWF_DEFINELOSSLESS ||			 block->type == SWF_DEFINELOSSLESS2 )	{		return block->length + 6;	}	else		return block->length + 2;}intwriteSWFBlockToMethod(SWFBlock block, SWFByteOutputMethod method, void *data){	SWFBlocktype type = block->type;	unsigned int length;	switch(block->type)	{	case SWF_UNUSEDBLOCK:	case SWF_MINGFONT:		return 0;	default:		break;	}	if ( !block->completed )		completeSWFBlock(block);	length = block->length;	/* write header */	if(type == SWF_PREBUILTCLIP)		type = SWF_DEFINESPRITE;	if ( type == SWF_PREBUILT )		;	else if ( length > 62 ||			 type == SWF_DEFINELOSSLESS ||			 type == SWF_DEFINELOSSLESS2 )	{		/* yep, a definebitslossless block has to be long form, even if it's			 under 63 bytes.. */		method((unsigned char)(((type&0x03)<<6) + 0x3f), data);		method((unsigned char)((type>>2) & 0xff), data);		methodWriteUInt32(length, method, data);		length += 6;	}	else	{	methodWriteUInt16(length + ((type)<<6), method, data);		length += 2;	}	if ( block->writeBlock )		block->writeBlock(block, method, data);	return length;}voidSWFBlockInit(SWFBlock block){	block->type = SWF_END; // XXX - ???	block->writeBlock = NULL;	block->complete = NULL;	block->dtor = NULL;	block->length = 0;	block->isDefined = FALSE;	block->completed = FALSE;		block->swfVersion = 0;}SWFBlocknewEmptySWFBlock(SWFBlocktype type){	SWFBlock block = (SWFBlock) malloc(sizeof(struct SWFBlock_s));	SWFBlockInit(block);	block->type = type;	return block;}SWFBlocknewSWFShowFrameBlock(){	return newEmptySWFBlock(SWF_SHOWFRAME);}SWFBlocknewSWFEndBlock(){	return newEmptySWFBlock(SWF_END);}SWFBlocktypeSWFBlock_getType(SWFBlock block){	return block->type;}/* * Local variables: * tab-width: 2 * c-basic-offset: 2 * End: */