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/* Emacs style mode select -*- C++ -*-
*-----------------------------------------------------------------------------
*
* $Id: l_video_trans.h,v 1.6 1999/10/12 13:00:57 cphipps Exp $
*
* Video mode translation for LxDoom,
* parts from the original linuxdoom i_video.c
* Copyright (C) 1994-1996 by id Software
* Copyright (C) 1999 by Colin Phipps
*
* 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* DESCRIPTION:
* Video mode translation & image enlarging
*-----------------------------------------------------------------------------*/
/* CPhipps - Colourmapping
* Yes, I'm afraid so, it's another colour remapping layer.
*/
#ifndef _L_VIDEO_TRANS_H_
#define _L_VIDEO_TRANS_H_
/* LxDoom may support 24bpp and 32bpp */
typedef unsigned long pval;
typedef struct {
unsigned char pshift; /* Shifts color value to correct place in pixel */
signed char rshift; /* Shift to desired value to make it fit within range */
} colourshift_t;
/* Not really part of this API, but put here as common code
* This is the TrueColor palette construction stuff
*/
extern colourshift_t redshift, greenshift, blueshift;
void I_SetColourShift(unsigned long mask, colourshift_t* ps);
void I_SetPaletteTranslation(const byte* palette);
/* These vars must be set before using the functions below */
extern int multiply, dest_bpp;
/* This points to the buffer to output */
/* Macros used in places */
#define BYTESPP ((dest_bpp + 7) / 8)
#define BITSPP (dest_bpp)
/* Image translation API */
boolean I_QueryImageTranslation(void); /* Is current image translation doable */
size_t I_InitImageTranslation(void); /* Use it then */
extern void (*I_ExpandImage)(pval* dest, const byte* src);
void I_EndImageTranslation(void);
extern boolean expand_buffer; /* Do we need to use expanded buffer */
extern boolean true_color; /* Is this a TrueColor or PseudoColor mode */
extern pval* pixelvals;
#endif
/*
* $Log: l_video_trans.h,v $
* Revision 1.6 1999/10/12 13:00:57 cphipps
* Changed header to GPL, converted C++ comments to C
*
* Revision 1.5 1999/01/04 19:31:49 cphipps
* Add RCS log
* Add extern to I_ExpandImage decl
*
*/
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