/*++ @file

Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2010,Apple Inc. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef __UGA_H_
#define __UGA_H_

#include <PiDxe.h>

#include <Protocol/GraphicsOutput.h>
#include <Protocol/SimpleTextIn.h>
#include <Protocol/SimpleTextInEx.h>
#include <Protocol/SimplePointer.h>
#include <Protocol/EmuIoThunk.h>
#include <Protocol/EmuGraphicsWindow.h>

#include <Guid/EventGroup.h>

#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/KeyMapLib.h>


#define MAX_Q 256

typedef struct {
  UINTN         Front;
  UINTN         Rear;
  UINTN         Count;
  EFI_INPUT_KEY Q[MAX_Q];
} GOP_QUEUE_FIXED;

#define EMU_GOP_SIMPLE_TEXTIN_EX_NOTIFY_SIGNATURE SIGNATURE_32 ('U', 'g', 'S', 'n')
typedef struct _EMU_GOP_SIMPLE_TEXTIN_EX_NOTIFY {
  UINTN                                 Signature;
  EFI_HANDLE                            NotifyHandle;
  EFI_KEY_DATA                          KeyData;
  EFI_KEY_NOTIFY_FUNCTION               KeyNotificationFn;
  EFI_EVENT                             Event;
  LIST_ENTRY                            NotifyEntry;
} EMU_GOP_SIMPLE_TEXTIN_EX_NOTIFY;

#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER 0xffff

typedef struct {
  UINT32                     HorizontalResolution;
  UINT32                     VerticalResolution;
  UINT32                     ColorDepth;
  UINT32                     RefreshRate;
} GOP_MODE_DATA;



extern EFI_DRIVER_BINDING_PROTOCOL gEmuGopDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gEmuGopComponentName;

#define EMU_UGA_CLASS_NAME       L"EmuGopWindow"

#define GOP_PRIVATE_DATA_SIGNATURE  SIGNATURE_32 ('G', 'o', 'p', 'N')
typedef struct {
  UINT64                            Signature;

  EFI_HANDLE                        Handle;
  EFI_GRAPHICS_OUTPUT_PROTOCOL      GraphicsOutput;
  EFI_SIMPLE_TEXT_INPUT_PROTOCOL    SimpleTextIn;
  EFI_SIMPLE_POINTER_PROTOCOL       SimplePointer;

  EMU_IO_THUNK_PROTOCOL             *EmuIoThunk;
  EMU_GRAPHICS_WINDOW_PROTOCOL      *EmuGraphicsWindow;

  EFI_UNICODE_STRING_TABLE          *ControllerNameTable;

  EFI_SIMPLE_POINTER_MODE           PointerMode;
  //
  // GOP Private Data for QueryMode ()
  //
  GOP_MODE_DATA                     *ModeData;


  //
  // UGA Private Data knowing when to start hardware
  //
  BOOLEAN                           HardwareNeedsStarting;

  CHAR16                            *WindowName;

  GOP_QUEUE_FIXED                   Queue;

  EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL SimpleTextInEx;
  EFI_KEY_STATE                     KeyState;
  LIST_ENTRY                        NotifyList;
} GOP_PRIVATE_DATA;


#define GOP_PRIVATE_DATA_FROM_THIS(a)  \
         CR(a, GOP_PRIVATE_DATA, GraphicsOutput, GOP_PRIVATE_DATA_SIGNATURE)

#define GOP_PRIVATE_DATA_FROM_TEXT_IN_THIS(a)  \
         CR(a, GOP_PRIVATE_DATA, SimpleTextIn, GOP_PRIVATE_DATA_SIGNATURE)

#define GOP_PRIVATE_DATA_FROM_TEXT_IN_EX_THIS(a)  \
         CR(a, GOP_PRIVATE_DATA, SimpleTextInEx, GOP_PRIVATE_DATA_SIGNATURE)

#define GOP_PRIVATE_DATA_FROM_POINTER_MODE_THIS(a)  \
         CR(a, GOP_PRIVATE_DATA, SimplePointer, GOP_PRIVATE_DATA_SIGNATURE)


//
// Global Protocol Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL  gEmuGopDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL  gEmuGopComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gEmuGopComponentName2;

//
// Gop Hardware abstraction internal worker functions
//
EFI_STATUS
EmuGopSupported (
  IN  EMU_IO_THUNK_PROTOCOL  *EmuIoThunk
  );

EFI_STATUS
EmuGopConstructor (
  IN  GOP_PRIVATE_DATA    *Private
  );

EFI_STATUS
EmuGopDestructor (
  IN  GOP_PRIVATE_DATA    *Private
  );


EFI_STATUS
GopPrivateAddQ (
  IN  GOP_PRIVATE_DATA    *Private,
  IN  EFI_INPUT_KEY       Key
  );

EFI_STATUS
EmuGopInitializeSimpleTextInForWindow (
  IN  GOP_PRIVATE_DATA    *Private
  );

EFI_STATUS
EmuGopInitializeSimplePointerForWindow (
  IN  GOP_PRIVATE_DATA    *Private
  );

EFI_STATUS
EmuGopStartWindow (
  IN  GOP_PRIVATE_DATA    *Private,
  IN  UINT32              HorizontalResolution,
  IN  UINT32              VerticalResolution,
  IN  UINT32              ColorDepth,
  IN  UINT32              RefreshRate
  );

VOID
EFIAPI
ShutdownGopEvent (
  IN EFI_EVENT  Event,
  IN VOID       *Context
  );

VOID
EFIAPI
GopPrivateMakeCallbackFunction (
  IN VOID           *Context,
  IN EFI_KEY_DATA   *KeyData
  );

VOID
EFIAPI
GopPrivateBreakCallbackFunction (
  IN VOID           *Context,
  IN EFI_KEY_DATA   *KeyData
  );

#endif