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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 _SDL_dx5video_h
#define _SDL_dx5video_h

#include "directx.h"

/* Private display data */
struct SDL_PrivateVideoData {
    LPDIRECTDRAW2 ddraw2;
    LPDIRECTDRAWSURFACE3 SDL_primary;
    LPDIRECTDRAWCLIPPER SDL_clipper;
    LPDIRECTDRAWPALETTE SDL_palette;
    PALETTEENTRY SDL_colors[256];
    int colorchange_expected;

#define NUM_MODELISTS	4		/* 8, 16, 24, and 32 bits-per-pixel */
    int SDL_nummodes[NUM_MODELISTS];
    SDL_Rect **SDL_modelist[NUM_MODELISTS];
    int SDL_modeindex[NUM_MODELISTS];
};
/* Old variable names */
#define ddraw2			(this->hidden->ddraw2)
#define SDL_primary		(this->hidden->SDL_primary)
#define SDL_clipper		(this->hidden->SDL_clipper)
#define SDL_palette		(this->hidden->SDL_palette)
#define SDL_colors		(this->hidden->SDL_colors)
#define colorchange_expected	(this->hidden->colorchange_expected)
#define SDL_nummodes		(this->hidden->SDL_nummodes)
#define SDL_modelist		(this->hidden->SDL_modelist)
#define SDL_modeindex		(this->hidden->SDL_modeindex)

/* DirectX function pointers for video and events */
extern HRESULT (WINAPI *DDrawCreate)( GUID FAR *lpGUID, LPDIRECTDRAW FAR *lplpDD, IUnknown FAR *pUnkOuter );
extern HRESULT (WINAPI *DInputCreate)(HINSTANCE hinst, DWORD dwVersion, LPDIRECTINPUT *ppDI, LPUNKNOWN punkOuter);

/* DirectDraw error reporting function */
extern void SetDDerror(const char *function, int code);

#endif /* _SDL_dx5video_h */