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view src/video/ataricommon/SDL_ataric2p_s.h @ 1798:49b4b8413734

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Date: Tue, 9 May 2006 23:01:49 -0400 From: Mike Frysinger Subject: [SDL] [patch] fall back to using MAP_PRIVATE with mmap() in fbcon dri trying to use MAP_SHARED with mmap() on uClinux (aka non-mmu) hosts nowadays will simply fail since the kernel disallows it ... falling back to using MAP_PRIVATE on these hosts is acceptable ... as such, ive attached a patch for the fbcon driver that will fall back to using MAP_PRIVATE if mmap() with MAP_SHARED failed going by a grep of MAP_SHARED, the only other drivers that utilize this flag are video/wscons, video/ps2gs, and sound/dmaaudio ... i dont think these would appear on a non-mmu host so the patch i wrote is restricted to just SDL_fbvideo.c ... -mike
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 May 2006 04:05:46 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef _ATARI_C2P_h
#define _ATARI_C2P_h

#include "SDL_stdinc.h"

/*--- Functions pointers ---*/

/* Convert a chunky screen to bitplane screen */

extern void (*SDL_Atari_C2pConvert)(
	Uint8 *src,			/* Source screen (one byte=one pixel) */
	Uint8 *dest,		/* Destination (4/8 bits planes) */
	Uint32 width,		/* Dimensions of screen to convert */
	Uint32 height,
	Uint32 dblligne,	/* Double the lines when converting ? */
	Uint32 srcpitch,	/* Length of one source line in bytes */
	Uint32 dstpitch		/* Length of one destination line in bytes */
);

/*--- 8 bits functions ---*/

/* Convert a chunky screen to bitplane screen */

void SDL_Atari_C2pConvert8(
	Uint8 *src,			/* Source screen (one byte=one pixel) */
	Uint8 *dest,		/* Destination (8 bits planes) */
	Uint32 width,		/* Dimensions of screen to convert */
	Uint32 height,
	Uint32 dblligne,	/* Double the lines when converting ? */
	Uint32 srcpitch,	/* Length of one source line in bytes */
	Uint32 dstpitch		/* Length of one destination line in bytes */
);

/*--- 4 bits functions ---*/

/* Convert a chunky screen to bitplane screen */

void SDL_Atari_C2pConvert4(
	Uint8 *src,			/* Source screen (one byte=one pixel) */
	Uint8 *dest,		/* Destination (4 bits planes) */
	Uint32 width,		/* Dimensions of screen to convert */
	Uint32 height,
	Uint32 dblligne,	/* Double the lines when converting ? */
	Uint32 srcpitch,	/* Length of one source line in bytes */
	Uint32 dstpitch		/* Length of one destination line in bytes */
);

/* Conversion palette */

void SDL_Atari_C2pConvert4_pal(Uint16 *lightpalette);

#endif /* _ATARI_C2P_h */