src/video/SDL_sysvideo.h
author Sam Lantinga <slouken@libsdl.org>
Sat, 15 Jul 2006 09:46:36 +0000
changeset 1907 06c27a737b7a
parent 1895 c121d94672cb
child 1912 8d384b647307
permissions -rw-r--r--
Streamlined the API a bit and optimized the software renderer.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#ifndef _SDL_sysvideo_h
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#define _SDL_sysvideo_h
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#include "SDL_mouse.h"
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/* The SDL video driver */
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typedef struct SDL_Window SDL_Window;
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typedef struct SDL_Texture SDL_Texture;
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typedef struct SDL_Renderer SDL_Renderer;
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typedef struct SDL_RenderDriver SDL_RenderDriver;
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typedef struct SDL_VideoDisplay SDL_VideoDisplay;
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typedef struct SDL_VideoDevice SDL_VideoDevice;
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/* Define the SDL texture structure */
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struct SDL_Texture
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{
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    Uint32 id;
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    Uint32 format;      /**< The pixel format of the texture */
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    int access;         /**< SDL_TextureAccess */
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    int w;              /**< The width of the texture */
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    int h;              /**< The height of the texture */
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    SDL_Renderer *renderer;
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    void *driverdata;   /**< Driver specific texture representation */
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    SDL_Texture *next;
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};
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/* Define the SDL renderer structure */
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struct SDL_Renderer
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{
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    int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    int (*QueryTexturePixels) (SDL_Renderer * renderer, SDL_Texture * texture,
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                               void **pixels, int *pitch);
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    int (*SetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,
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                              const SDL_Color * colors, int firstcolor,
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                              int ncolors);
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    int (*GetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,
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                              SDL_Color * colors, int firstcolor,
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                              int ncolors);
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    int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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                          const SDL_Rect * rect, const void *pixels,
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                          int pitch);
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    int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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                        const SDL_Rect * rect, int markDirty, void **pixels,
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                        int *pitch);
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    void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    void (*DirtyTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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                          int numrects, const SDL_Rect * rects);
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    int (*RenderFill) (SDL_Renderer * renderer, const SDL_Rect * rect,
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                       Uint32 color);
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    int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
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                       const SDL_Rect * srcrect, const SDL_Rect * dstrect,
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                       int blendMode, int scaleMode);
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    void (*RenderPresent) (SDL_Renderer * renderer);
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    void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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    void (*DestroyRenderer) (SDL_Renderer * renderer);
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    /* The current renderer info */
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    SDL_RendererInfo info;
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    /* The window associated with the renderer */
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    SDL_WindowID window;
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    void *driverdata;
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};
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/* Define the SDL render driver structure */
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struct SDL_RenderDriver
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{
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    SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
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    /* Info about the renderer capabilities */
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    SDL_RendererInfo info;
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};
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/* Define the SDL window structure, corresponding to toplevel windows */
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struct SDL_Window
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{
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    Uint32 id;
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    char *title;
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    int x, y;
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    int w, h;
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    Uint32 flags;
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    int display;
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    SDL_Renderer *renderer;
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    void *userdata;
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    void *driverdata;
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};
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#define FULLSCREEN_VISIBLE(W) \
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    (((W)->flags & SDL_WINDOW_FULLSCREEN) && \
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     ((W)->flags & SDL_WINDOW_SHOWN) && \
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     !((W)->flags & SDL_WINDOW_MINIMIZED))
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/* Define the SDL display structure
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   This corresponds to physical monitors attached to the system.
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 */
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struct SDL_VideoDisplay
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{
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    int max_display_modes;
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    int num_display_modes;
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    SDL_DisplayMode *display_modes;
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    SDL_DisplayMode desktop_mode;
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    SDL_DisplayMode current_mode;
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    SDL_DisplayMode desired_mode;
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    SDL_DisplayMode *fullscreen_mode;
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    SDL_Palette *palette;
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    Uint16 *gamma;
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    Uint16 *saved_gamma;        /* (just offset into gamma) */
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    int num_render_drivers;
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    SDL_RenderDriver *render_drivers;
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    int num_windows;
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    SDL_Window *windows;
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    SDL_Renderer *current_renderer;
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    /* The hash list of textures */
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    SDL_Texture *textures[64];
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    SDL_VideoDevice *device;
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    void *driverdata;
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};
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/* Define the SDL video driver structure */
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#define _THIS	SDL_VideoDevice *_this
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struct SDL_VideoDevice
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{
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    /* * * */
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    /* The name of this video driver */
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    const char *name;
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    /* * * */
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    /* Initialization/Query functions */
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    /* Initialize the native video subsystem, filling in the list
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       of displays for this driver, returning 0 or -1 if there's an error.
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     */
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    int (*VideoInit) (_THIS);
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    /* * * */
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    /* Display functions
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     */
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    /* Get a list of the available display modes.
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     * e.g.  SDL_AddDisplayMode(_this->current_display, mode)
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     */
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    void (*GetDisplayModes) (_THIS);
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    /* Setting the display mode is independent of creating windows,
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     * so when the display mode is changed, all existing windows
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     * should have their data updated accordingly, including the
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     * display surfaces associated with them.
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     */
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    int (*SetDisplayMode) (_THIS, SDL_DisplayMode * mode);
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    /* Set the color entries of the display palette */
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    int (*SetDisplayPalette) (_THIS, SDL_Palette * palette);
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    /* Get the color entries of the display palette */
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    int (*GetDisplayPalette) (_THIS, SDL_Palette * palette);
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    /* Set the gamma ramp */
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    int (*SetDisplayGammaRamp) (_THIS, Uint16 * ramp);
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    /* Get the gamma ramp */
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    int (*GetDisplayGammaRamp) (_THIS, Uint16 * ramp);
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    /* * * */
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    /* Window functions
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     */
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    int (*CreateWindow) (_THIS, SDL_Window * window);
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    int (*CreateWindowFrom) (_THIS, SDL_Window * window, const void *data);
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    void (*SetWindowTitle) (_THIS, SDL_Window * window);
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    void (*SetWindowPosition) (_THIS, SDL_Window * window);
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    void (*SetWindowSize) (_THIS, SDL_Window * window);
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    void (*ShowWindow) (_THIS, SDL_Window * window);
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    void (*HideWindow) (_THIS, SDL_Window * window);
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    void (*RaiseWindow) (_THIS, SDL_Window * window);
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    void (*MaximizeWindow) (_THIS, SDL_Window * window);
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    void (*MinimizeWindow) (_THIS, SDL_Window * window);
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    void (*RestoreWindow) (_THIS, SDL_Window * window);
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    void (*SetWindowGrab) (_THIS, SDL_Window * window);
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    void (*DestroyWindow) (_THIS, SDL_Window * window);
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    /* Get some platform dependent window information */
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      SDL_bool(*GetWindowWMInfo) (_THIS, SDL_Window * window,
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                                  struct SDL_SysWMinfo * info);
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    /* Reverse the effects VideoInit() -- called if VideoInit() fails
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       or if the application is shutting down the video subsystem.
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     */
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    void (*VideoQuit) (_THIS);
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    /* * * */
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    /* OpenGL support */
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    /* Sets the dll to use for OpenGL and loads it */
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    int (*GL_LoadLibrary) (_THIS, const char *path);
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    /* Retrieves the address of a function in the gl library */
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    void *(*GL_GetProcAddress) (_THIS, const char *proc);
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    /* Get attribute information from the windowing system. */
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    int (*GL_GetAttribute) (_THIS, SDL_GLattr attrib, int *value);
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    /* Make the context associated with this driver current */
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    int (*GL_MakeCurrent) (_THIS);
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    /* Swap the current buffers in double buffer mode. */
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    void (*GL_SwapBuffers) (_THIS);
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    /* Determine whether the mouse should be in relative mode or not.
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       This function is called when the input grab state or cursor
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       visibility state changes.
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       If the cursor is not visible, and the input is grabbed, the
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       driver can place the mouse in relative mode, which may result
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       in higher accuracy sampling of the pointer motion.
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     */
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    void (*CheckMouseMode) (_THIS);
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    /* * * */
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    /* Event manager functions */
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    /* Handle any queued OS events */
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    void (*PumpEvents) (_THIS);
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    /* * * */
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    /* Data common to all drivers */
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    int num_displays;
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    SDL_VideoDisplay *displays;
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    int current_display;
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    Uint32 next_object_id;
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    /* Driver information flags */
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    /* * * */
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    /* Data used by the GL drivers */
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    struct
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    {
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        int red_size;
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        int green_size;
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        int blue_size;
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        int alpha_size;
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        int depth_size;
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        int buffer_size;
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        int stencil_size;
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        int double_buffer;
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        int accum_red_size;
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        int accum_green_size;
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        int accum_blue_size;
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        int accum_alpha_size;
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        int stereo;
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        int multisamplebuffers;
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        int multisamplesamples;
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        int accelerated;
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        int driver_loaded;
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        char driver_path[256];
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        void *dll_handle;
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    } gl_config;
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    /* * * */
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    /* Data private to this driver */
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    void *driverdata;
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    struct SDL_PrivateGLData *gl_data;
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    /* * * */
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    /* The function used to dispose of this structure */
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    void (*free) (_THIS);
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};
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typedef struct VideoBootStrap
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{
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    const char *name;
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    const char *desc;
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    int (*available) (void);
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    SDL_VideoDevice *(*create) (int devindex);
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} VideoBootStrap;
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#if SDL_VIDEO_DRIVER_QUARTZ
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extern VideoBootStrap QZ_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_X11
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extern VideoBootStrap X11_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_DGA
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extern VideoBootStrap DGA_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_NANOX
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extern VideoBootStrap NX_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_IPOD
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extern VideoBootStrap iPod_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_QTOPIA
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extern VideoBootStrap Qtopia_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_WSCONS
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extern VideoBootStrap WSCONS_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_FBCON
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extern VideoBootStrap FBCON_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_DIRECTFB
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extern VideoBootStrap DirectFB_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_PS2GS
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extern VideoBootStrap PS2GS_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_GGI
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extern VideoBootStrap GGI_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_VGL
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extern VideoBootStrap VGL_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_SVGALIB
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extern VideoBootStrap SVGALIB_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_GAPI
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extern VideoBootStrap GAPI_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_WIN32
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extern VideoBootStrap WIN32_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_BWINDOW
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extern VideoBootStrap BWINDOW_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_TOOLBOX
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extern VideoBootStrap TOOLBOX_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_DRAWSPROCKET
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extern VideoBootStrap DSp_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_CYBERGRAPHICS
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extern VideoBootStrap CGX_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_PHOTON
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extern VideoBootStrap ph_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_EPOC
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extern VideoBootStrap EPOC_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_XBIOS
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extern VideoBootStrap XBIOS_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_GEM
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extern VideoBootStrap GEM_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_PICOGUI
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extern VideoBootStrap PG_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_DC
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extern VideoBootStrap DC_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_RISCOS
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extern VideoBootStrap RISCOS_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_OS2FS
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extern VideoBootStrap OS2FSLib_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_AALIB
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extern VideoBootStrap AALIB_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_DUMMY
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extern VideoBootStrap DUMMY_bootstrap;
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#endif
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#if SDL_VIDEO_DRIVER_GLSDL
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extern VideoBootStrap glSDL_bootstrap;
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#endif
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#define SDL_CurrentDisplay	(_this->displays[_this->current_display])
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extern SDL_VideoDevice *SDL_GetVideoDevice();
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extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);
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extern int SDL_AddVideoDisplay(const SDL_VideoDisplay * display);
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extern SDL_bool SDL_AddDisplayMode(int displayIndex,
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                                   const SDL_DisplayMode * mode);
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extern void SDL_AddRenderDriver(int displayIndex,
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                                const SDL_RenderDriver * driver);
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extern SDL_Window *SDL_GetWindowFromID(SDL_WindowID windowID);
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extern SDL_VideoDisplay *SDL_GetDisplayFromWindow(SDL_Window * window);
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extern void SDL_OnWindowShown(SDL_Window * window);
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extern void SDL_OnWindowHidden(SDL_Window * window);
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extern void SDL_OnWindowFocusGained(SDL_Window * window);
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extern void SDL_OnWindowFocusLost(SDL_Window * window);
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extern SDL_WindowID SDL_GetFocusWindow(void);
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#endif /* _SDL_sysvideo_h */
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/* vi: set ts=4 sw=4 expandtab: */