view src/video/photon/SDL_ph_video.h @ 1199:2d6dc7de1145

From: Mike Frysinger <vapier@gentoo.org> To: sdl@libsdl.org Date: Sun, 11 Dec 2005 22:57:37 -0500 Subject: [SDL] exec stack in libsdl update i posted back in September a patch to remove executable stacks: http://www.devolution.com/pipermail/sdl/2005-September/070626.html later in November, a similar patch was merged it seems: http://www.libsdl.org/cgi/cvsweb.cgi/SDL12/src/hermes/mmx_main.asm however, this lacks the additional output format checks that i posted in my patch ... this isnt a problem if the hermes asm code is only ever used to produce ELF objects, but if this is not true, then the additional checks in my original patch will need to be merged -mike
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 12 Dec 2005 09:13:12 +0000
parents 4ab6d1fd028f
children 19418e4422cb
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifndef __SDL_PH_VIDEO_H__
#define __SDL_PH_VIDEO_H__

#include "SDL_mouse.h"
#include "SDL_sysvideo.h"

#include <sys/neutrino.h>

#include <Ph.h>
#include <Pt.h>
#include <photon/Pg.h>
#include <photon/PdDirect.h>

#ifdef HAVE_OPENGL
    #if (_NTO_VERSION < 630)
        #include <photon/PdGL.h>
    #else
        #include <GL/qnxgl.h>
        #include <GL/GLPh.h>
    #endif /* 6.3.0 */
#endif /* HAVE_OPENGL */

/* Hidden "this" pointer for the video functions */
#define _THIS	SDL_VideoDevice* this

#define PH_OGL_MAX_ATTRIBS 32

#define SDLPH_PAL_NONE    0x00000000L
#define SDLPH_PAL_EMULATE 0x00000001L
#define SDLPH_PAL_SYSTEM  0x00000002L

typedef struct
{
    unsigned char* Y;
    unsigned char* V;
    unsigned char* U;
} FRAMEDATA;

/* Mask values for SDL_ReallocFormat() */
struct ColourMasks
{
    Uint32 red;
    Uint32 green;
    Uint32 blue;
    Uint32 alpha;
    Uint32 bpp;
};

/* Private display data */
struct SDL_PrivateVideoData
{
    PgDisplaySettings_t mode_settings;	
    PtWidget_t *Window;                  /* used to handle input events */
    PhImage_t *image;	                 /* used to display image       */
#ifdef HAVE_OPENGL
    #if (_NTO_VERSION < 630)
        PdOpenGLContext_t* OGLContext;   /* OpenGL context              */
        void* OGLBuffers;                /* OpenGL buffers (unused)     */
    #else
        qnxglc_t* OGLContext;            /* OpenGL context for the 6.3  */
        qnxgl_bufs_t* OGLBuffers;        /* OpenGL buffers for the 6.3  */
    #endif /* 630 */

    Uint32 OGLFlags;                     /* OpenGL flags                */
    Uint32 OGLBPP;                       /* OpenGL bpp                  */
#endif /* HAVE_OPENGL */
    PgColor_t savedpal[_Pg_MAX_PALETTE];
    PgColor_t syspalph[_Pg_MAX_PALETTE];

    struct
    {
        PdDirectContext_t*    direct_context;
        PdOffscreenContext_t* offscreen_context;
        PdOffscreenContext_t* offscreen_backcontext;
        PhDrawContext_t*      oldDC;
        uint8_t*              dc_ptr;
        unsigned char*        CurrentFrameData;
        unsigned char*        FrameData0;
        unsigned char*        FrameData1;
        Uint32                current;
        Uint32                flags;
    } ocimage;

    PgHWCaps_t graphics_card_caps;  /* Graphics card caps at the moment of start   */
    PgVideoModeInfo_t desktop_mode; /* Current desktop video mode information      */
    int old_video_mode;             /* Stored mode before fullscreen switch        */
    int old_refresh_rate;           /* Stored refresh rate befor fullscreen switch */

    int mouse_relative;
    WMcursor* BlankCursor;
    uint32_t videomode_emulatemode;

    Uint32 visualbpp;	            /* current visual bpp                          */
    Uint32 desktopbpp;              /* bpp of desktop at the moment of start       */
    Uint32 desktoppal;              /* palette mode emulation or system            */

    int currently_fullscreen;
    int currently_hided;            /* 1 - window hided (minimazed), 0 - normal    */
    int currently_maximized;        /* 1 - window hided (minimazed), 0 - normal    */

    PhEvent_t* event;
    SDL_Overlay* overlay;
};

#define mode_settings         (this->hidden->mode_settings)
#define window	              (this->hidden->Window)
#define SDL_Image             (this->hidden->image)
#define OCImage               (this->hidden->ocimage)
#define old_video_mode        (this->hidden->old_video_mode)
#define old_refresh_rate      (this->hidden->old_refresh_rate)
#define graphics_card_caps    (this->hidden->graphics_card_caps)
#define desktopbpp            (this->hidden->desktopbpp)
#define visualbpp             (this->hidden->visualbpp)
#define desktoppal            (this->hidden->desktoppal)
#define savedpal              (this->hidden->savedpal)
#define syspalph              (this->hidden->syspalph)
#define currently_fullscreen  (this->hidden->currently_fullscreen)
#define currently_hided       (this->hidden->currently_hided)
#define currently_maximized   (this->hidden->currently_maximized)
#define event                 (this->hidden->event)
#define current_overlay       (this->hidden->overlay)
#define desktop_mode          (this->hidden->desktop_mode)
#define mouse_relative        (this->hidden->mouse_relative)
#define SDL_BlankCursor       (this->hidden->BlankCursor)
#define videomode_emulatemode (this->hidden->videomode_emulatemode)

#ifdef HAVE_OPENGL
     #define oglctx               (this->hidden->OGLContext)
     #define oglbuffers           (this->hidden->OGLBuffers)
     #define oglflags             (this->hidden->OGLFlags)
     #define oglbpp               (this->hidden->OGLBPP)
#endif /* HAVE_OPENGL */

#endif /* __SDL_PH_VIDEO_H__ */