/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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

    QNX Photon GUI SDL driver
    Copyright (C) 2009 Mike Gorchak
    (mike@malva.ua, lestat@i.com.ua)
*/

#ifndef __SDL_PHOTON_H__
#define __SDL_PHOTON_H__

/* GF headers must be included first for the Photon GF functions */
#if defined(SDL_VIDEO_OPENGL_ES)
   #include <gf/gf.h>
   #include <GLES/egl.h>
#endif /* SDL_VIDEO_OPENGL_ES */

#include "SDL_config.h"
#include "../SDL_sysvideo.h"

#include <Ph.h>
#include <Pt.h>
#include <photon/PkKeyDef.h>

/* Maximum display devices, which can handle SDL Photon driver */
#define SDL_VIDEO_PHOTON_MAX_RIDS 16

typedef struct SDL_VideoData
{
   PhRid_t  rid[SDL_VIDEO_PHOTON_MAX_RIDS];
   uint32_t avail_rids;
   uint32_t current_device_id;
   #if defined(SDL_VIDEO_OPENGL_ES)
      gf_dev_t      gfdev;           /* GF device handle                     */
      gf_dev_info_t gfdev_info;      /* GF device information                */
      SDL_bool      gfinitialized;   /* GF device initialization status      */
      EGLDisplay    egldisplay;      /* OpenGL ES display connection         */
      uint32_t      egl_refcount;    /* OpenGL ES reference count            */
      uint32_t      swapinterval;    /* OpenGL ES default swap interval      */
   #endif /* SDL_VIDEO_OPENGL_ES */
} SDL_VideoData;

/* This is hardcoded value in photon/Pg.h */
#define SDL_VIDEO_PHOTON_DEVICENAME_MAX  41
#define SDL_VIDEO_PHOTON_MAX_CURSOR_SIZE 128

/* Maximum event message size with data payload */
#define SDL_VIDEO_PHOTON_EVENT_SIZE 8192

typedef struct SDL_DisplayData
{
   uint32_t          device_id;
   uint32_t          custom_refresh;   /* Custom refresh rate for all modes  */
   SDL_DisplayMode   current_mode;     /* Current video mode                 */
   uint8_t           description[SDL_VIDEO_PHOTON_DEVICENAME_MAX];
                                       /* Device description                 */
   uint32_t          caps;             /* Device capabilities                */
   PhCursorDef_t*    cursor;           /* Global cursor settings             */
   SDL_bool          cursor_visible;   /* SDL_TRUE if cursor visible         */
   uint32_t          cursor_size;      /* Cursor size in memory w/ structure */
   #if defined(SDL_VIDEO_OPENGL_ES)
      gf_display_t      display;       /* GF display handle                  */
      gf_display_info_t display_info;  /* GF display information             */
   #endif /* SDL_VIDEO_OPENGL_ES */
} SDL_DisplayData;

/* Maximum amount of OpenGL ES framebuffer configurations */
#define SDL_VIDEO_GF_OPENGLES_CONFS 32

typedef struct SDL_WindowData
{
   SDL_bool       uses_gles;           /* if true window must support OpenGL ES*/
   PtWidget_t*    window;              /* window handle                        */
   #if defined(SDL_VIDEO_OPENGL_ES)
      EGLConfig    gles_configs[SDL_VIDEO_GF_OPENGLES_CONFS];
                                         /* OpenGL ES framebuffer confs        */
      EGLint       gles_config;          /* OpenGL ES configuration index      */
      EGLContext   gles_context;         /* OpenGL ES context                  */
      EGLint       gles_attributes[256]; /* OpenGL ES attributes for context   */
      EGLSurface   gles_surface;         /* OpenGL ES target rendering surface */
      gf_surface_t gfsurface;            /* OpenGL ES GF's surface             */
      PdOffscreenContext_t* phsurface;   /* OpenGL ES Photon's surface         */
   #endif /* SDL_VIDEO_OPENGL_ES */
} SDL_WindowData;

/****************************************************************************/
/* Low level Photon graphics driver capabilities                            */
/****************************************************************************/
typedef struct Photon_DeviceCaps
{
   uint8_t* name;
   uint32_t caps;
} Photon_DeviceCaps;

#define SDL_PHOTON_UNACCELERATED         0x00000000
#define SDL_PHOTON_ACCELERATED           0x00000001
#define SDL_PHOTON_UNACCELERATED_3D      0x00000000
#define SDL_PHOTON_ACCELERATED_3D        0x00000004

/****************************************************************************/
/* SDL_VideoDevice functions declaration                                    */
/****************************************************************************/

/* Display and window functions */
int  photon_videoinit(_THIS);
void photon_videoquit(_THIS);
void photon_getdisplaymodes(_THIS);
int  photon_setdisplaymode(_THIS, SDL_DisplayMode* mode);
int  photon_setdisplaypalette(_THIS, SDL_Palette* palette);
int  photon_getdisplaypalette(_THIS, SDL_Palette* palette);
int  photon_setdisplaygammaramp(_THIS, Uint16* ramp);
int  photon_getdisplaygammaramp(_THIS, Uint16* ramp);
int  photon_createwindow(_THIS, SDL_Window* window);
int  photon_createwindowfrom(_THIS, SDL_Window* window, const void* data);
void photon_setwindowtitle(_THIS, SDL_Window* window);
void photon_setwindowicon(_THIS, SDL_Window* window, SDL_Surface* icon);
void photon_setwindowposition(_THIS, SDL_Window* window);
void photon_setwindowsize(_THIS, SDL_Window* window);
void photon_showwindow(_THIS, SDL_Window* window);
void photon_hidewindow(_THIS, SDL_Window* window);
void photon_raisewindow(_THIS, SDL_Window* window);
void photon_maximizewindow(_THIS, SDL_Window* window);
void photon_minimizewindow(_THIS, SDL_Window* window);
void photon_restorewindow(_THIS, SDL_Window* window);
void photon_setwindowgrab(_THIS, SDL_Window* window);
void photon_destroywindow(_THIS, SDL_Window* window);

/* Window manager function */
SDL_bool photon_getwindowwminfo(_THIS, SDL_Window* window, struct SDL_SysWMinfo* info);

/* OpenGL/OpenGL ES functions */
int photon_gl_loadlibrary(_THIS, const char* path);
void* photon_gl_getprocaddres(_THIS, const char* proc);
void photon_gl_unloadlibrary(_THIS);
SDL_GLContext photon_gl_createcontext(_THIS, SDL_Window* window);
int photon_gl_makecurrent(_THIS, SDL_Window* window, SDL_GLContext context);
int photon_gl_setswapinterval(_THIS, int interval);
int photon_gl_getswapinterval(_THIS);
void photon_gl_swapwindow(_THIS, SDL_Window* window);
void photon_gl_deletecontext(_THIS, SDL_GLContext context);

/* Event handling function */
void photon_pumpevents(_THIS);

/* Screen saver related function */
void photon_suspendscreensaver(_THIS);

#endif /* __SDL_PHOTON_H__ */

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