/**********************************************************************
*
* Copyright(c) Imagination Technologies Ltd.
*
* The contents of this file are subject to the MIT license as set out below.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
* OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* 
* This License is also included in this distribution in the file called 
* "COPYING".
* 
******************************************************************************/



#if !defined(__WSEGL_H__)
#define __WSEGL_H__

#ifdef __cplusplus
extern "C" {
#endif 

/*
// WSEGL Platform-specific definitions
*/
#if defined(__linux__)
#define WSEGL_EXPORT __attribute__((visibility("default")))
#define WSEGL_IMPORT
#else
#define WSEGL_EXPORT
#define WSEGL_IMPORT
#endif

/*
// WSEGL API Version Number
*/

#define WSEGL_VERSION 2
#define WSEGL_DEFAULT_DISPLAY 0
#define WSEGL_DEFAULT_NATIVE_ENGINE 0

#define WSEGL_FALSE		0
#define WSEGL_TRUE		1
#define WSEGL_NULL		0

#define	WSEGL_UNREFERENCED_PARAMETER(param) (param) = (param)

/*
// WSEGL handles
*/
typedef void *WSEGLDisplayHandle;
typedef void *WSEGLDrawableHandle;

/*
// Display capability type
*/
typedef enum WSEGLCapsType_TAG
{
	WSEGL_NO_CAPS = 0,
	WSEGL_CAP_MIN_SWAP_INTERVAL = 1, /* System default value = 1 */
	WSEGL_CAP_MAX_SWAP_INTERVAL = 2, /* System default value = 1 */
	WSEGL_CAP_WINDOWS_USE_HW_SYNC = 3, /* System default value = 0 (FALSE) */
	WSEGL_CAP_PIXMAPS_USE_HW_SYNC = 4, /* System default value = 0 (FALSE) */

} WSEGLCapsType;

/*
// Display capability
*/
typedef struct WSEGLCaps_TAG
{
	WSEGLCapsType eCapsType;
	unsigned long ui32CapsValue;

} WSEGLCaps;

/*
// Drawable type
*/
#define WSEGL_NO_DRAWABLE			0x0
#define WSEGL_DRAWABLE_WINDOW		0x1
#define WSEGL_DRAWABLE_PIXMAP		0x2


/*
// Pixel format of display/drawable
*/
typedef enum WSEGLPixelFormat_TAG
{
	/* These must not be re-ordered */
	WSEGL_PIXELFORMAT_RGB565	= 0,
	WSEGL_PIXELFORMAT_ARGB4444	= 1,
	WSEGL_PIXELFORMAT_ARGB8888	= 2,
	WSEGL_PIXELFORMAT_ARGB1555	= 3,
	WSEGL_PIXELFORMAT_ABGR8888	= 4,
	WSEGL_PIXELFORMAT_XBGR8888	= 5,

	/* These are compatibility names only; new WSEGL
	 * modules should not use them.
	 */
	WSEGL_PIXELFORMAT_565		= WSEGL_PIXELFORMAT_RGB565,
	WSEGL_PIXELFORMAT_4444		= WSEGL_PIXELFORMAT_ARGB4444,
	WSEGL_PIXELFORMAT_8888		= WSEGL_PIXELFORMAT_ARGB8888,
	WSEGL_PIXELFORMAT_1555		= WSEGL_PIXELFORMAT_ARGB1555,

} WSEGLPixelFormat;

/*
// Transparent of display/drawable
*/
typedef enum WSEGLTransparentType_TAG
{
	WSEGL_OPAQUE = 0,
	WSEGL_COLOR_KEY = 1,

} WSEGLTransparentType;

/*
// Display/drawable configuration
*/
typedef struct WSEGLConfig_TAG
{
	/*
	// Type of drawables this configuration applies to -
	// OR'd values of drawable types. 
	*/
	unsigned long ui32DrawableType;

	/* Pixel format */
	WSEGLPixelFormat ePixelFormat;

	/* Native Renderable  - set to WSEGL_TRUE if native renderable */
	unsigned long ulNativeRenderable;

	/* FrameBuffer Level Parameter */
	unsigned long ulFrameBufferLevel;

	/* Native Visual ID */
	unsigned long ulNativeVisualID;

	/* Native Visual */
	void *hNativeVisual;

	/* Transparent Type */
	WSEGLTransparentType eTransparentType;

	/* Transparent Color - only used if transparent type is COLOR_KEY */
	unsigned long ulTransparentColor; /* packed as 0x00RRGGBB */


} WSEGLConfig;

/*
// WSEGL errors
*/
typedef enum WSEGLError_TAG
{
	WSEGL_SUCCESS = 0,
	WSEGL_CANNOT_INITIALISE = 1,
	WSEGL_BAD_NATIVE_DISPLAY = 2,
	WSEGL_BAD_NATIVE_WINDOW = 3,
	WSEGL_BAD_NATIVE_PIXMAP = 4,
	WSEGL_BAD_NATIVE_ENGINE = 5,
	WSEGL_BAD_DRAWABLE = 6,
	WSEGL_BAD_MATCH = 7,
	WSEGL_OUT_OF_MEMORY = 8,

	/* These are compatibility names only; new WSEGL
	 * modules should not use them.
	 */
	WSEGL_BAD_CONFIG = WSEGL_BAD_MATCH,

} WSEGLError; 

/*
// Drawable orientation (in degrees anti-clockwise)
*/
typedef enum WSEGLRotationAngle_TAG
{
	WSEGL_ROTATE_0 = 0,
	WSEGL_ROTATE_90 = 1,
	WSEGL_ROTATE_180 = 2,
	WSEGL_ROTATE_270 = 3

} WSEGLRotationAngle; 

/*
// Drawable information required by OpenGL-ES driver
*/
typedef struct WSEGLDrawableParams_TAG
{
	/* Width in pixels of the drawable */
	unsigned long	ui32Width;

	/* Height in pixels of the drawable */
	unsigned long	ui32Height;

	/* Stride in pixels of the drawable */
	unsigned long	ui32Stride;

	/* Pixel format of the drawable */
	WSEGLPixelFormat	ePixelFormat;

	/* User space cpu virtual address of the drawable */
	void   			*pvLinearAddress;

	/* HW address of the drawable */
	unsigned long	ui32HWAddress;

	/* Private data for the drawable */
	void			*hPrivateData;


} WSEGLDrawableParams;


/*
// Table of function pointers that is returned by WSEGL_GetFunctionTablePointer()
//
// The first entry in the table is the version number of the wsegl.h header file that
// the module has been written against, and should therefore be set to WSEGL_VERSION
*/
typedef struct WSEGL_FunctionTable_TAG
{
	unsigned long ui32WSEGLVersion;

	WSEGLError (*pfnWSEGL_IsDisplayValid)(NativeDisplayType);

	WSEGLError (*pfnWSEGL_InitialiseDisplay)(NativeDisplayType, WSEGLDisplayHandle *, const WSEGLCaps **, WSEGLConfig **);

	WSEGLError (*pfnWSEGL_CloseDisplay)(WSEGLDisplayHandle);

	WSEGLError (*pfnWSEGL_CreateWindowDrawable)(WSEGLDisplayHandle, WSEGLConfig *, WSEGLDrawableHandle *, NativeWindowType, WSEGLRotationAngle *);

	WSEGLError (*pfnWSEGL_CreatePixmapDrawable)(WSEGLDisplayHandle, WSEGLConfig *, WSEGLDrawableHandle *, NativePixmapType, WSEGLRotationAngle *);

	WSEGLError (*pfnWSEGL_DeleteDrawable)(WSEGLDrawableHandle);

	WSEGLError (*pfnWSEGL_SwapDrawable)(WSEGLDrawableHandle, unsigned long);

	WSEGLError (*pfnWSEGL_SwapControlInterval)(WSEGLDrawableHandle, unsigned long);

	WSEGLError (*pfnWSEGL_WaitNative)(WSEGLDrawableHandle, unsigned long);

	WSEGLError (*pfnWSEGL_CopyFromDrawable)(WSEGLDrawableHandle, NativePixmapType);

	WSEGLError (*pfnWSEGL_CopyFromPBuffer)(void *, unsigned long, unsigned long, unsigned long, WSEGLPixelFormat, NativePixmapType);

	WSEGLError (*pfnWSEGL_GetDrawableParameters)(WSEGLDrawableHandle, WSEGLDrawableParams *, WSEGLDrawableParams *);

	WSEGLError (*pfnWSEGL_ConnectDrawable)(WSEGLDrawableHandle);

	WSEGLError (*pfnWSEGL_DisconnectDrawable)(WSEGLDrawableHandle);


} WSEGL_FunctionTable;


WSEGL_IMPORT const WSEGL_FunctionTable *WSEGL_GetFunctionTablePointer(void);

#ifdef __cplusplus
}
#endif 

#endif /* __WSEGL_H__ */

/******************************************************************************
 End of file (wsegl.h)
******************************************************************************/