524 lines
14 KiB
C
524 lines
14 KiB
C
/******************************Module*Header*******************************\
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*
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* *******************
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* * GDI SAMPLE CODE *
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* *******************
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*
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* Module Name: enable.c
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*
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* This module contains the functions that enable and disable the
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* driver, the pdev, and the surface.
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*
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* Copyright (c) 1992-1998 Microsoft Corporation
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\**************************************************************************/
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#include "driver.h"
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// The driver function table with all function index/address pairs
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static DRVFN gadrvfn[] =
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{
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{ INDEX_DrvEnablePDEV, (PFN) DrvEnablePDEV },
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{ INDEX_DrvCompletePDEV, (PFN) DrvCompletePDEV },
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{ INDEX_DrvDisablePDEV, (PFN) DrvDisablePDEV },
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{ INDEX_DrvEnableSurface, (PFN) DrvEnableSurface },
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{ INDEX_DrvOffset, (PFN) DrvOffset },
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{ INDEX_DrvDisableSurface, (PFN) DrvDisableSurface },
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{ INDEX_DrvAssertMode, (PFN) DrvAssertMode },
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{ INDEX_DrvSetPalette, (PFN) DrvSetPalette },
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{ INDEX_DrvMovePointer, (PFN) DrvMovePointer },
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{ INDEX_DrvSetPointerShape, (PFN) DrvSetPointerShape },
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{ INDEX_DrvDitherColor, (PFN) DrvDitherColor },
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{ INDEX_DrvSynchronize, (PFN) DrvSynchronize },
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{ INDEX_DrvGetModes, (PFN) DrvGetModes }
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};
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// Define the functions you want to hook for 8/16/24/32 pel formats
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#define HOOKS_BMF8BPP 0
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#define HOOKS_BMF16BPP 0
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#define HOOKS_BMF24BPP 0
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#define HOOKS_BMF32BPP 0
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/******************************Public*Routine******************************\
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* DrvEnableDriver
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*
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* Enables the driver by retrieving the drivers function table and version.
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*
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\**************************************************************************/
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BOOL DrvEnableDriver(
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ULONG iEngineVersion,
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ULONG cj,
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PDRVENABLEDATA pded)
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{
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// Engine Version is passed down so future drivers can support previous
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// engine versions. A next generation driver can support both the old
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// and new engine conventions if told what version of engine it is
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// working with. For the first version the driver does nothing with it.
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iEngineVersion;
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// Fill in as much as we can.
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if (cj >= sizeof(DRVENABLEDATA))
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pded->pdrvfn = gadrvfn;
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if (cj >= (sizeof(ULONG) * 2))
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pded->c = sizeof(gadrvfn) / sizeof(DRVFN);
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// DDI version this driver was targeted for is passed back to engine.
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// Future graphic's engine may break calls down to old driver format.
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if (cj >= sizeof(ULONG))
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pded->iDriverVersion = DDI_DRIVER_VERSION_NT4;
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* DrvEnablePDEV
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*
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* DDI function, Enables the Physical Device.
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*
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* Return Value: device handle to pdev.
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*
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\**************************************************************************/
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DHPDEV DrvEnablePDEV(
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DEVMODEW *pDevmode, // Pointer to DEVMODE
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PWSTR pwszLogAddress, // Logical address
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ULONG cPatterns, // number of patterns
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HSURF *ahsurfPatterns, // return standard patterns
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ULONG cjGdiInfo, // Length of memory pointed to by pGdiInfo
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ULONG *pGdiInfo, // Pointer to GdiInfo structure
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ULONG cjDevInfo, // Length of following PDEVINFO structure
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DEVINFO *pDevInfo, // physical device information structure
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HDEV hdev, // HDEV, used for callbacks
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PWSTR pwszDeviceName, // DeviceName - not used
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HANDLE hDriver) // Handle to base driver
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{
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GDIINFO GdiInfo;
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DEVINFO DevInfo;
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PPDEV ppdev = (PPDEV) NULL;
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UNREFERENCED_PARAMETER(pwszLogAddress);
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UNREFERENCED_PARAMETER(pwszDeviceName);
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// Allocate a physical device structure.
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ppdev = (PPDEV) EngAllocMem(0, sizeof(PDEV), ALLOC_TAG);
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if (ppdev == (PPDEV) NULL)
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{
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RIP("DISP DrvEnablePDEV failed EngAllocMem\n");
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return((DHPDEV) 0);
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}
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memset(ppdev, 0, sizeof(PDEV));
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// Save the screen handle in the PDEV.
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ppdev->hDriver = hDriver;
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// Get the current screen mode information. Set up device caps and devinfo.
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if (!bInitPDEV(ppdev, pDevmode, &GdiInfo, &DevInfo))
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{
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DISPDBG((0,"DISP DrvEnablePDEV failed\n"));
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goto error_free;
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}
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// Initialize the cursor information.
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if (!bInitPointer(ppdev, &DevInfo))
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{
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// Not a fatal error...
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DISPDBG((0, "DrvEnablePDEV failed bInitPointer\n"));
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}
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// Initialize palette information.
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if (!bInitPaletteInfo(ppdev, &DevInfo))
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{
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RIP("DrvEnablePDEV failed bInitPalette\n");
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goto error_free;
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}
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// Copy the devinfo into the engine buffer.
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memcpy(pDevInfo, &DevInfo, min(sizeof(DEVINFO), cjDevInfo));
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// Set the pdevCaps with GdiInfo we have prepared to the list of caps for this
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// pdev.
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memcpy(pGdiInfo, &GdiInfo, min(cjGdiInfo, sizeof(GDIINFO)));
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return((DHPDEV) ppdev);
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// Error case for failure.
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error_free:
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EngFreeMem(ppdev);
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return((DHPDEV) 0);
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}
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/******************************Public*Routine******************************\
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* DrvCompletePDEV
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*
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* Store the HPDEV, the engines handle for this PDEV, in the DHPDEV.
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*
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\**************************************************************************/
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VOID DrvCompletePDEV(
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DHPDEV dhpdev,
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HDEV hdev)
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{
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((PPDEV) dhpdev)->hdevEng = hdev;
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}
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/******************************Public*Routine******************************\
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* DrvDisablePDEV
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*
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* Release the resources allocated in DrvEnablePDEV. If a surface has been
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* enabled DrvDisableSurface will have already been called.
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*
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\**************************************************************************/
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VOID DrvDisablePDEV(
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DHPDEV dhpdev)
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{
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vDisablePalette((PPDEV) dhpdev);
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EngFreeMem(dhpdev);
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}
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/******************************Public*Routine******************************\
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* VOID DrvOffset
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*
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* DescriptionText
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*
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\**************************************************************************/
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BOOL DrvOffset(
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SURFOBJ* pso,
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LONG x,
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LONG y,
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FLONG flReserved)
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{
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PDEV* ppdev = (PDEV*) pso->dhpdev;
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// Add back last offset that we subtracted. I could combine the next
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// two statements, but I thought this was more clear. It's not
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// performance critical anyway.
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ppdev->pjScreen += ((ppdev->ptlOrg.y * ppdev->lDeltaScreen) +
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(ppdev->ptlOrg.x * ((ppdev->ulBitCount+1) >> 3)));
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// Subtract out new offset
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ppdev->pjScreen -= ((y * ppdev->lDeltaScreen) +
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(x * ((ppdev->ulBitCount+1) >> 3)));
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ppdev->ptlOrg.x = x;
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ppdev->ptlOrg.y = y;
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* DrvEnableSurface
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*
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* Enable the surface for the device. Hook the calls this driver supports.
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*
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* Return: Handle to the surface if successful, 0 for failure.
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*
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\**************************************************************************/
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HSURF DrvEnableSurface(
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DHPDEV dhpdev)
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{
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PPDEV ppdev;
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HSURF hsurf;
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SIZEL sizl;
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ULONG ulBitmapType;
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FLONG flHooks;
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// Create engine bitmap around frame buffer.
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ppdev = (PPDEV) dhpdev;
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ppdev->ptlOrg.x = 0;
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ppdev->ptlOrg.y = 0;
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if (!bInitSURF(ppdev, TRUE))
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{
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DISPDBG((0, "DISP DrvEnableSurface failed bInitSURF\n"));
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return(FALSE);
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}
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sizl.cx = ppdev->cxScreen;
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sizl.cy = ppdev->cyScreen;
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if (ppdev->ulBitCount == 8)
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{
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if (!bInit256ColorPalette(ppdev)) {
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RIP("DISP DrvEnableSurface failed to init the 8bpp palette\n");
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return(FALSE);
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}
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ulBitmapType = BMF_8BPP;
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flHooks = HOOKS_BMF8BPP;
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}
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else if (ppdev->ulBitCount == 16)
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{
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ulBitmapType = BMF_16BPP;
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flHooks = HOOKS_BMF16BPP;
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}
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else if (ppdev->ulBitCount == 24)
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{
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ulBitmapType = BMF_24BPP;
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flHooks = HOOKS_BMF24BPP;
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}
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else
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{
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ulBitmapType = BMF_32BPP;
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flHooks = HOOKS_BMF32BPP;
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}
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ppdev->flHooks = flHooks;
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hsurf = (HSURF)EngCreateDeviceSurface((DHSURF)ppdev,
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sizl,
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ulBitmapType);
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if (hsurf == (HSURF) 0)
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{
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RIP("DISP DrvEnableSurface failed EngCreateDeviceSurface\n");
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return(FALSE);
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}
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if ( !EngModifySurface(hsurf,
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ppdev->hdevEng,
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ppdev->flHooks | HOOK_SYNCHRONIZE,
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MS_NOTSYSTEMMEMORY,
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(DHSURF)ppdev,
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ppdev->pjScreen,
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ppdev->lDeltaScreen,
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NULL))
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{
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RIP("DISP DrvEnableSurface failed EngModifySurface\n");
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return(FALSE);
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}
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ppdev->hsurfEng = hsurf;
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return(hsurf);
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}
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/******************************Public*Routine******************************\
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* DrvDisableSurface
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*
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* Free resources allocated by DrvEnableSurface. Release the surface.
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*
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\**************************************************************************/
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VOID DrvDisableSurface(
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DHPDEV dhpdev)
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{
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EngDeleteSurface(((PPDEV) dhpdev)->hsurfEng);
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vDisableSURF((PPDEV) dhpdev);
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((PPDEV) dhpdev)->hsurfEng = (HSURF) 0;
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}
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/******************************Public*Routine******************************\
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* DrvAssertMode
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*
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* This asks the device to reset itself to the mode of the pdev passed in.
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*
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\**************************************************************************/
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BOOL DrvAssertMode(
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DHPDEV dhpdev,
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BOOL bEnable)
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{
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PPDEV ppdev = (PPDEV) dhpdev;
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ULONG ulReturn;
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PBYTE pjScreen;
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if (bEnable)
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{
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//
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// The screen must be reenabled, reinitialize the device to clean state.
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//
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pjScreen = ppdev->pjScreen;
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if (!bInitSURF(ppdev, TRUE))
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{
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RIP("DISP DrvAssertMode failed bInitSURF\n");
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return (FALSE);
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}
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if (pjScreen != ppdev->pjScreen) {
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if ( !EngModifySurface(ppdev->hsurfEng,
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ppdev->hdevEng,
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ppdev->flHooks | HOOK_SYNCHRONIZE,
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MS_NOTSYSTEMMEMORY,
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(DHSURF)ppdev,
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ppdev->pjScreen,
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ppdev->lDeltaScreen,
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NULL))
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{
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RIP("DISP DrvAssertMode failed EngModifySurface\n");
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return (FALSE);
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}
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}
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return (TRUE);
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}
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else
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{
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//
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// We must give up the display.
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// Call the kernel driver to reset the device to a known state.
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//
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if (EngDeviceIoControl(ppdev->hDriver,
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IOCTL_VIDEO_RESET_DEVICE,
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NULL,
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0,
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NULL,
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0,
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&ulReturn))
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{
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RIP("DISP DrvAssertMode failed IOCTL");
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return FALSE;
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}
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else
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{
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return TRUE;
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}
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}
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}
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/******************************Public*Routine******************************\
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* DrvGetModes
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*
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* Returns the list of available modes for the device.
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*
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\**************************************************************************/
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ULONG DrvGetModes(
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HANDLE hDriver,
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ULONG cjSize,
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DEVMODEW *pdm)
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{
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DWORD cModes;
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DWORD cbOutputSize;
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PVIDEO_MODE_INFORMATION pVideoModeInformation, pVideoTemp;
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DWORD cOutputModes = cjSize / (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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DWORD cbModeSize;
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DISPDBG((3, "DrvGetModes\n"));
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cModes = getAvailableModes(hDriver,
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(PVIDEO_MODE_INFORMATION *) &pVideoModeInformation,
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&cbModeSize);
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if (cModes == 0)
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{
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DISPDBG((0, "DrvGetModes failed to get mode information"));
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return 0;
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}
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if (pdm == NULL)
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{
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cbOutputSize = cModes * (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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}
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else
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{
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//
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// Now copy the information for the supported modes back into the output
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// buffer
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//
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cbOutputSize = 0;
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pVideoTemp = pVideoModeInformation;
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do
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{
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if (pVideoTemp->Length != 0)
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{
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if (cOutputModes == 0)
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{
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break;
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}
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//
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// Zero the entire structure to start off with.
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//
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memset(pdm, 0, sizeof(DEVMODEW));
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//
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// Set the name of the device to the name of the DLL.
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//
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memcpy(pdm->dmDeviceName, DLL_NAME, sizeof(DLL_NAME));
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pdm->dmSpecVersion = DM_SPECVERSION;
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pdm->dmDriverVersion = DM_SPECVERSION;
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pdm->dmSize = sizeof(DEVMODEW);
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pdm->dmDriverExtra = DRIVER_EXTRA_SIZE;
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pdm->dmBitsPerPel = pVideoTemp->NumberOfPlanes *
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pVideoTemp->BitsPerPlane;
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pdm->dmPelsWidth = pVideoTemp->VisScreenWidth;
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pdm->dmPelsHeight = pVideoTemp->VisScreenHeight;
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pdm->dmDisplayFrequency = pVideoTemp->Frequency;
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pdm->dmDisplayFlags = 0;
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pdm->dmFields = DM_BITSPERPEL |
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DM_PELSWIDTH |
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DM_PELSHEIGHT |
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DM_DISPLAYFREQUENCY |
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DM_DISPLAYFLAGS ;
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//
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// Go to the next DEVMODE entry in the buffer.
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//
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cOutputModes--;
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pdm = (LPDEVMODEW) ( ((ULONG_PTR)pdm) + sizeof(DEVMODEW)
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+ DRIVER_EXTRA_SIZE);
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cbOutputSize += (sizeof(DEVMODEW) + DRIVER_EXTRA_SIZE);
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}
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pVideoTemp = (PVIDEO_MODE_INFORMATION)
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(((PUCHAR)pVideoTemp) + cbModeSize);
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} while (--cModes);
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}
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EngFreeMem(pVideoModeInformation);
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return cbOutputSize;
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}
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VOID DrvSynchronize(
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IN DHPDEV dhpdev,
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IN RECTL *prcl)
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{
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}
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