338 lines
9.1 KiB
C
338 lines
9.1 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: palette.c
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*
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* Palette support.
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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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// Global Table defining the 20 Window Default Colors. For 256 color
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// palettes the first 10 must be put at the beginning of the palette
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// and the last 10 at the end of the palette.
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const PALETTEENTRY BASEPALETTE[20] =
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{
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{ 0, 0, 0, 0 }, // 0
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{ 0x80,0, 0, 0 }, // 1
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{ 0, 0x80,0, 0 }, // 2
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{ 0x80,0x80,0, 0 }, // 3
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{ 0, 0, 0x80,0 }, // 4
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{ 0x80,0, 0x80,0 }, // 5
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{ 0, 0x80,0x80,0 }, // 6
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{ 0xC0,0xC0,0xC0,0 }, // 7
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{ 192, 220, 192, 0 }, // 8
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{ 166, 202, 240, 0 }, // 9
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{ 255, 251, 240, 0 }, // 10
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{ 160, 160, 164, 0 }, // 11
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{ 0x80,0x80,0x80,0 }, // 12
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{ 0xFF,0, 0 ,0 }, // 13
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{ 0, 0xFF,0 ,0 }, // 14
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{ 0xFF,0xFF,0 ,0 }, // 15
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{ 0 ,0, 0xFF,0 }, // 16
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{ 0xFF,0, 0xFF,0 }, // 17
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{ 0, 0xFF,0xFF,0 }, // 18
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{ 0xFF,0xFF,0xFF,0 }, // 19
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};
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BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo);
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/******************************Public*Routine******************************\
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* bInitPaletteInfo
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*
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* Initializes the palette information for this PDEV.
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*
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* Called by DrvEnablePDEV.
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*
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\**************************************************************************/
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BOOL bInitPaletteInfo(PPDEV ppdev, DEVINFO *pDevInfo)
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{
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if (!bInitDefaultPalette(ppdev, pDevInfo))
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return(FALSE);
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* vDisablePalette
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*
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* Frees resources allocated by bInitPaletteInfo.
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*
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\**************************************************************************/
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VOID vDisablePalette(PPDEV ppdev)
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{
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// Delete the default palette if we created one.
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if (ppdev->hpalDefault)
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{
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EngDeletePalette(ppdev->hpalDefault);
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ppdev->hpalDefault = (HPALETTE) 0;
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}
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if (ppdev->pPal != (PPALETTEENTRY)NULL)
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EngFreeMem((PVOID)ppdev->pPal);
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}
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/******************************Public*Routine******************************\
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* bInitDefaultPalette
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*
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* Initializes default palette for PDEV.
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*
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\**************************************************************************/
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BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo)
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{
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if (ppdev->ulBitCount == 8)
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{
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ULONG ulLoop;
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BYTE jRed,jGre,jBlu;
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//
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// Allocate our palette
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//
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ppdev->pPal = (PPALETTEENTRY)EngAllocMem(0, sizeof(PALETTEENTRY) * 256,
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ALLOC_TAG);
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if ((ppdev->pPal) == NULL) {
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RIP("DISP bInitDefaultPalette() failed EngAllocMem\n");
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return(FALSE);
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}
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//
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// Generate 256 (8*4*4) RGB combinations to fill the palette
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//
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jRed = jGre = jBlu = 0;
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for (ulLoop = 0; ulLoop < 256; ulLoop++)
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{
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ppdev->pPal[ulLoop].peRed = jRed;
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ppdev->pPal[ulLoop].peGreen = jGre;
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ppdev->pPal[ulLoop].peBlue = jBlu;
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ppdev->pPal[ulLoop].peFlags = (BYTE)0;
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if (!(jRed += 32))
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if (!(jGre += 32))
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jBlu += 64;
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}
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//
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// Fill in Windows Reserved Colors from the WIN 3.0 DDK
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// The Window Manager reserved the first and last 10 colors for
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// painting windows borders and for non-palette managed applications.
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//
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for (ulLoop = 0; ulLoop < 10; ulLoop++)
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{
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//
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// First 10
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//
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ppdev->pPal[ulLoop] = BASEPALETTE[ulLoop];
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//
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// Last 10
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//
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ppdev->pPal[246 + ulLoop] = BASEPALETTE[ulLoop+10];
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}
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//
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// Create handle for palette.
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//
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ppdev->hpalDefault =
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pDevInfo->hpalDefault = EngCreatePalette(PAL_INDEXED,
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256,
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(PULONG) ppdev->pPal,
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0,0,0);
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if (ppdev->hpalDefault == (HPALETTE) 0)
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{
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RIP("DISP bInitDefaultPalette failed EngCreatePalette\n");
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EngFreeMem(ppdev->pPal);
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return(FALSE);
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}
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//
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// Initialize the hardware with the initial palette.
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//
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return(TRUE);
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} else {
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ppdev->hpalDefault =
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pDevInfo->hpalDefault = EngCreatePalette(PAL_BITFIELDS,
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0,(PULONG) NULL,
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ppdev->flRed,
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ppdev->flGreen,
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ppdev->flBlue);
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if (ppdev->hpalDefault == (HPALETTE) 0)
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{
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RIP("DISP bInitDefaultPalette failed EngCreatePalette\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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/******************************Public*Routine******************************\
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* bInit256ColorPalette
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*
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* Initialize the hardware's palette registers.
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*
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\**************************************************************************/
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BOOL bInit256ColorPalette(PPDEV ppdev)
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{
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BYTE ajClutSpace[MAX_CLUT_SIZE];
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PVIDEO_CLUT pScreenClut;
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ULONG ulReturnedDataLength;
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ULONG cColors;
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PVIDEO_CLUTDATA pScreenClutData;
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if (ppdev->ulBitCount == 8)
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{
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//
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// Fill in pScreenClut header info:
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//
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pScreenClut = (PVIDEO_CLUT) ajClutSpace;
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pScreenClut->NumEntries = 256;
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pScreenClut->FirstEntry = 0;
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//
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// Copy colours in:
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//
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cColors = 256;
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pScreenClutData = (PVIDEO_CLUTDATA) (&(pScreenClut->LookupTable[0]));
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while(cColors--)
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{
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pScreenClutData[cColors].Red = ppdev->pPal[cColors].peRed >>
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ppdev->cPaletteShift;
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pScreenClutData[cColors].Green = ppdev->pPal[cColors].peGreen >>
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ppdev->cPaletteShift;
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pScreenClutData[cColors].Blue = ppdev->pPal[cColors].peBlue >>
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ppdev->cPaletteShift;
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pScreenClutData[cColors].Unused = 0;
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}
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//
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// Set palette registers:
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//
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if (EngDeviceIoControl(ppdev->hDriver,
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IOCTL_VIDEO_SET_COLOR_REGISTERS,
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pScreenClut,
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MAX_CLUT_SIZE,
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NULL,
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0,
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&ulReturnedDataLength))
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{
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DISPDBG((0, "Failed bEnablePalette"));
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return(FALSE);
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}
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}
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DISPDBG((5, "Passed bEnablePalette"));
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return(TRUE);
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}
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/******************************Public*Routine******************************\
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* DrvSetPalette
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*
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* DDI entry point for manipulating the palette.
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*
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\**************************************************************************/
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BOOL DrvSetPalette(
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DHPDEV dhpdev,
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PALOBJ* ppalo,
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FLONG fl,
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ULONG iStart,
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ULONG cColors)
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{
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BYTE ajClutSpace[MAX_CLUT_SIZE];
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PVIDEO_CLUT pScreenClut;
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PVIDEO_CLUTDATA pScreenClutData;
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PDEV* ppdev;
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UNREFERENCED_PARAMETER(fl);
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ppdev = (PDEV*) dhpdev;
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//
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// Fill in pScreenClut header info:
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//
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pScreenClut = (PVIDEO_CLUT) ajClutSpace;
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pScreenClut->NumEntries = (USHORT) cColors;
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pScreenClut->FirstEntry = (USHORT) iStart;
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pScreenClutData = (PVIDEO_CLUTDATA) (&(pScreenClut->LookupTable[0]));
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if (cColors != PALOBJ_cGetColors(ppalo, iStart, cColors,
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(ULONG*) pScreenClutData))
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{
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DISPDBG((0, "DrvSetPalette failed PALOBJ_cGetColors\n"));
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return (FALSE);
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}
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//
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// Set the high reserved byte in each palette entry to 0.
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// Do the appropriate palette shifting to fit in the DAC.
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//
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if (ppdev->cPaletteShift)
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{
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while(cColors--)
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{
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pScreenClutData[cColors].Red >>= ppdev->cPaletteShift;
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pScreenClutData[cColors].Green >>= ppdev->cPaletteShift;
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pScreenClutData[cColors].Blue >>= ppdev->cPaletteShift;
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pScreenClutData[cColors].Unused = 0;
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}
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}
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else
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{
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while(cColors--)
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{
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pScreenClutData[cColors].Unused = 0;
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}
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}
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//
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// Set palette registers
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//
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if (EngDeviceIoControl(ppdev->hDriver,
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IOCTL_VIDEO_SET_COLOR_REGISTERS,
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pScreenClut,
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MAX_CLUT_SIZE,
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NULL,
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0,
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&cColors))
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{
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DISPDBG((0, "DrvSetPalette failed EngDeviceIoControl\n"));
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return (FALSE);
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}
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return(TRUE);
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}
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