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mateusz.vi |
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/*
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* video library - provides a few functions for mode 4 and 13h programming.
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*
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* This file is part of the Mateusz' DOS Routines (MDR): http://mdr.osdn.io
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* Published under the terms of the MIT License, as stated below.
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*
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* Copyright (C) 2014-2023 Mateusz Viste
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef MDR_VIDEO_H
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#define MDR_VIDEO_H
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#define VIDEO_DBUF 1
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struct video_handler {
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unsigned char far *dbuf;
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int flags;
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int mode;
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unsigned char lastmode;
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};
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/* returns 0 if no VGA has been detected, non-zero otherwise */
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int video_detectvga(void);
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/* returns 0 if no EGA has been detected, non-zero otherwise */
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int video_detectega(void);
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/* init video mode. either 0x04 for CGA or 0x13 for VGA */
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struct video_handler *video_open(int mode, int flags);
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/* reads a screen dump from file and puts it to the screen buffer */
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void video_file2screen(struct video_handler *handler, char *file);
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/* load count colors of palette from array of rgb triplets */
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void video_loadpal(const unsigned char *pal, int count, int offset);
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/* Wait until VBLANK */
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void video_waitvblank(void);
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void video_flip(struct video_handler *handler);
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/* copies line ysrc over ydst in CGA mode memory */
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void video_cgalinecopy(struct video_handler *handler, int ydst, int ysrc);
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/* clear screen using color */
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void video_cls(struct video_handler *handler, unsigned char color);
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/* renders a sprite of width and height dimensions onscreen, starting at specified x/y location
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coloffset is an offset to add to color indexes, while transp is the index of the transparent color (set to -1 if none) */
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void video_putsprite(struct video_handler *handler, unsigned char *sprite, int x, int y, int width, int height, int coloffset, int transp, int maxcol);
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/* same as video_putsprite(), but reads the sprite from a file */
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void video_putspritefromfile(struct video_handler *handler, char *file, long foffset, int x, int y, int width, int height, int coloffset, int transp, int maxcol);
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void video_close(struct video_handler *handler);
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void video_rputpixel(struct video_handler *handler, int x, int y, unsigned char col, int repeat);
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/* render a horizontal line of length len starting at x/y */
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void video_hline(struct video_handler *handler, int x, int y, int len, unsigned char color);
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/* render a vertical line of length len starting at x/y */
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void video_vline(struct video_handler *handler, int x, int y, int len, unsigned char color);
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void video_line(struct video_handler *handler, int x1, int y1, int x2, int y2, unsigned char color);
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void video_rect(struct video_handler *handler, int x, int y, int width, int height, unsigned char color);
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/* renders a rectangle on screen, at position x/y, filled with color */
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void video_rectfill(struct video_handler *handler, int x, int y, int width, int height, unsigned char color);
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void video_setpalette(unsigned char index, unsigned char r, unsigned char g, unsigned char b);
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void video_getpalette(unsigned char index, unsigned char *r, unsigned char *g, unsigned char *b);
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#endif
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