/******************************************************************************
	libx42 - skinned vertex animation library
	Copyright (C) 2007 HermitWorks Entertainment Corporation

	This program is free software; you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the Free
	Software Foundation; either version 2 of the License, or (at your option)
	any later version.

	This program 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 General Public License
	for more details.

	You should have received a copy of the GNU General Public License along
	with this program; if not, write to the
	
		Free Software Foundation, Inc.
		51 Franklin Street, Fifth Floor
		Boston, MA  02110-1301, USA.
******************************************************************************/

#ifndef INC_MEMSTREAM_H
#define INC_MEMSTREAM_H

/*
	Some macros to make working with x42memStream_t a bit easier.
*/

#define stream_next( stm ) {((stm)->pStreamZero = (void*)((byte*)(stm)->pStreamZero + (stm)->stride));}

#define stream_currptr( stm, T ) ((T*)(stm)->pStreamZero)
#define stream_currf( stm ) stream_currptr( stm, float )
#define stream_currub( stm ) stream_currptr( stm, byte )

#define stream_emit1f( stm, x, y ) {stream_currf( stm )[0] = (x); stream_next( stm )}
#define stream_emit2f( stm, x, y ) {stream_currf( stm )[0] = (x); stream_currf( stm )[1] = (y); stream_next( stm )}
#define stream_emit3f( stm, x, y, z ) {stream_currf( stm )[0] = (x); stream_currf( stm )[1] = (y); stream_currf( stm )[2] = (z); stream_next( stm );}

#define stream_emit1fv( stm, v ) {stream_currf( stm )[0] = (v)[0]; stream_next( stm );}
#define stream_emit2fv( stm, v ) {stream_currf( stm )[0] = (v)[0]; stream_currf( stm )[1] = (v)[1]; stream_next( stm );}
#define stream_emit3fv( stm, v ) {stream_currf( stm )[0] = (v)[0]; stream_currf( stm )[1] = (v)[1]; stream_currf( stm )[2] = (v)[2]; stream_next( stm );}

#define stream_emit4ub( stm, x, y, z, w ) {stream_currub( stm )[0] = x; stream_currub( stm )[1] = y; stream_currub( stm )[2] = z; stream_currub( stm )[3] = w; stream_next( stm );}
#define stream_emit4ubv( stm, v ) {*stream_currptr( stm, uint ) = *(uint*)(v); stream_next( stm );}

#endif