engine.c

WinCE 3.0 BSP, 包含Inter SA1110, Intel_815E, Advantech_PCM9574 等

//
// Permedia3 Sample Display Driver
// engine.c
//
// Copyright (c) 2000 Microsoft Corporation. All rights reserved.
//
// This code wraps the "engine" callbacks provided by GDI. They allow the
// calls to be made as if they were local function calls. It will also handle
// engine version control, if it is ever necessary. Refered to as "GDI
// Engine Manager."

#include "pch.h"  // Precompiled header support.
#include "debug.h"
#include "struct.h"
#include "proto.h"

// Expands out to GDI engine pointers. These are filled in and managed by this
// module. See winddi.h for details.

DEFINE_GDI_ENTRY_POINTS(EMPTYPARM,LEFTENTRY,RIGHTENTRY)

BOOL
InitializeEngineManager(
  ULONG         EngineVersion,
  PENGCALLBACKS EngineCallbacks
  )
{
  // InitializeEngineManager
  // Extract the function pointers from the array provided by GDI. Check the
  // versioning and set up our exported function pointers.

  // Local Variables.

  BOOL FnRetVal = FALSE;  // Return value for this function.

  // Check parameters.

  Assert(EngineVersion == GetEngineVersion());
  AssertReadPtr(EngineCallbacks, sizeof(ENGCALLBACKS));

  Enter(L"InitializeEngineManager");

  // This is where you would check out the engine version ID and fill out
  // the function pointers conditionally.

  BRUSHOBJ_pvAllocRbrush = EngineCallbacks->BRUSHOBJ_pvAllocRbrush;
  BRUSHOBJ_pvGetRbrush =   EngineCallbacks->BRUSHOBJ_pvGetRbrush;
  CLIPOBJ_cEnumStart =     EngineCallbacks->CLIPOBJ_cEnumStart;
  CLIPOBJ_bEnum =          EngineCallbacks->CLIPOBJ_bEnum;
  PALOBJ_cGetColors =      EngineCallbacks->PALOBJ_cGetColors;
  PATHOBJ_vEnumStart =     EngineCallbacks->PATHOBJ_vEnumStart;
  PATHOBJ_bEnum =          EngineCallbacks->PATHOBJ_bEnum;
  PATHOBJ_vGetBounds =     EngineCallbacks->PATHOBJ_vGetBounds;
  XLATEOBJ_cGetPalette =   EngineCallbacks->XLATEOBJ_cGetPalette;
  EngCreateDeviceSurface = EngineCallbacks->EngCreateDeviceSurface;
  EngDeleteSurface =       EngineCallbacks->EngDeleteSurface;
  EngCreateDeviceBitmap =  EngineCallbacks->EngCreateDeviceBitmap;
  EngCreatePalette =       EngineCallbacks->EngCreatePalette;
  FnRetVal = TRUE;

  Exit(L"InitializeEngineManager");

  return FnRetVal;
}

ULONG
GetEngineVersion()
{
  // GetEngineVersion
  // Returns the version of the GDI "engine" that we are encapsulating. No
  // Enter/Exit semantics. This is likely to be inlined.

  return (DDI_DRIVER_VERSION);
}