/*
	sw_model_sprite.c

	model loading and caching

	Copyright (C) 1996-1997  Id Software, Inc.

	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:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

*/
static const char rcsid[] = 
	"$Id$";

// models are the only shared resource between a client and server running
// on the same machine.

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif

#include "QF/model.h"
#include "QF/qendian.h"
#include "QF/sys.h"

#include "d_iface.h"

extern model_t *loadmodel;
extern char loadname[];


void       *
Mod_LoadSpriteFrame (void *pin, mspriteframe_t **ppframe, int framenum)
{
	dspriteframe_t *pinframe;
	mspriteframe_t *pspriteframe;
	int width, height, size, origin[2];
//	int i;

	pinframe = (dspriteframe_t *) pin;

	width = LittleLong (pinframe->width);
	height = LittleLong (pinframe->height);
	size = width * height;

	// LordHavoc: sprite renderer uses 8bit pixels regardless of output
	// (see note below)
	pspriteframe = Hunk_AllocName (sizeof (mspriteframe_t) + size, loadname);
//	pspriteframe = Hunk_AllocName (sizeof (mspriteframe_t) + size * r_pixbytes, loadname);

	memset (pspriteframe, 0, sizeof (mspriteframe_t) + size);

	*ppframe = pspriteframe;

	pspriteframe->width = width;
	pspriteframe->height = height;
	origin[0] = LittleLong (pinframe->origin[0]);
	origin[1] = LittleLong (pinframe->origin[1]);

	pspriteframe->up = origin[1];
	pspriteframe->down = origin[1] - height;
	pspriteframe->left = origin[0];
	pspriteframe->right = width + origin[0];

	// LordHavoc: rewrote this and then realized that the sprite renderer uses
	// pixel conversion anyway
	memcpy (&pspriteframe->pixels[0], (byte *) (pinframe + 1), size);
/*
	switch(r_pixbytes) {
	case 1:
		memcpy (&pspriteframe->pixels[0], (byte *) (pinframe + 1), size);
		break;
	case 2:
	{
		byte *ppixin = (byte *) (pinframe + 1);
		unsigned short *ppixout = (unsigned short *) &pspriteframe->pixels[0];
		for (i = 0; i < size; i++)
			ppixout[i] = d_8to16table[ppixin[i]];
	}
	break;
	case 4:
	{
		byte *ppixin = (byte *) (pinframe + 1);
		unsigned int *ppixout = (int short *) &pspriteframe->pixels[0];
		for (i = 0; i < size; i++)
			ppixout[i] = d_8to24table[ppixin[i]];
	}
	break;
	default:
		Sys_Error("Mod_LoadSpriteFrame: unsupported r_pixbytes %i\n",
				  r_pixbytes);
	}
*/

	return (void *) ((byte *) pinframe + sizeof (dspriteframe_t) + size);
}