path: root/xc/programs/Xserver/PEX5/dipex/dispatch/dipexExt.c

/* $TOG: dipexExt.c /main/12 1998/02/10 12:34:41 kaleb $ */

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/* $XFree86: xc/programs/Xserver/PEX5/dipex/dispatch/dipexExt.c,v 3.18 1998/12/20 11:57:23 dawes Exp $ */

#define NEED_EVENTS
#include "X.h"
#include "Xproto.h"
#include "PEXproto.h"
#include "misc.h"
#include "os.h"
#include "pixmapstr.h"
#include "extnsionst.h"
#include "dixstruct.h"
#include "resource.h"
#include "pexUtils.h"
#include "pexos.h"

#define LOCAL_FLAG
#define _DIPEXEXT_
#include "dipex.h"
#include "pexSwap.h"
#undef _DIPEXEXT_
#undef LOCAL_FLAG


unsigned long add_pad_of[] = {0, 3, 2, 1};

unsigned int ColourSpecSizes[] = {
    sizeof(CARD32),			    /* PEXIndexedColour */
    3 * sizeof(PEXFLOAT),			    /* PEXRgbFloatColour */
    3 * sizeof(PEXFLOAT),			    /* PEXCieFloatColour */
    3 * sizeof(PEXFLOAT),			    /* PEXHsvFloatColour */
    3 * sizeof(PEXFLOAT),			    /* PEXHlsFloatColour */
    sizeof(CARD32),			    /* PEXRgb8Colour */
    2 * sizeof(CARD32),			    /* PEXRgb16Colour */
};

extern ddpex43rtn ddpexInit();

extern ddBuffer *pPEXBuffer;
extern ddBuffer *diInitPEXBuffer();
extern RequestFunction PEXRequest[];
extern void SwapCARD32();
extern void SwapCARD16();
static int DeletePexClient();

/*
 ******************************************************************************
 *
 *	Function:	PexExtensionInit
 *
 ******************************************************************************
 */
void
PexExtensionInit()
{
    ExtensionEntry *AddExtension();
    ExtensionEntry *PextEntry = 0;
    int ProcPEXDispatch();
    void PEXResetProc();
    extern int	DeleteStructure(), FreeSearchContext(), FreeRenderer(),
		FreePickMeasure(), dipexFreePhigsWks(), FreePipelineContext(),
		FreeNameSet(), FreeLUT(), FreePEXFont(), FreeWksDrawable();
    extern ddpex43rtn OpenPEXFont();
    dipexFont	*pPEXFont;

    PEXStructType   = CreateNewResourceType (DeleteStructure);
    PEXSearchType   = CreateNewResourceType (FreeSearchContext);
    PEXRendType	    = CreateNewResourceType (FreeRenderer);
    PEXPickType	    = CreateNewResourceType (FreePickMeasure);
    PEXWksType	    = CreateNewResourceType (dipexFreePhigsWks);
    PEXPipeType	    = CreateNewResourceType (FreePipelineContext);
    PEXNameType	    = CreateNewResourceType (FreeNameSet);
    PEXLutType	    = CreateNewResourceType (FreeLUT);
    PEXFontType	    = CreateNewResourceType (FreePEXFont);
    PEXContextType  = CreateNewResourceType (DeletePexClient);

    PEXClass	    = CreateNewResourceClass();
    PEXWksDrawableType
		    = CreateNewResourceType (FreeWksDrawable);

    if (!PEXStructType || !PEXSearchType || !PEXRendType || !PEXWksDrawableType
	|| !PEXWksType || !PEXPipeType   || !PEXNameType || !PEXFontType 
	|| !PEXLutType || !PEXPickType   || !PEXClass    || !PEXContextType ) {
	    ErrorF("PEXExtensionInit: Could not create PEX resource types\n");
	    return;
	}

    /*
	Init buffer for varying-sized replies from ddpex
     */
    pPEXBuffer = diInitPEXBuffer();

    if (!pPEXBuffer) {
	ErrorF("PEXExtensionInit: failed to alloc buffer\n");
	return; }

    /*
     *	Init any device dependent stuff
     */

    if (ddpexInit()) {
	ErrorF("PEXExtensionInit: Couldn't init ddPEX!\n");
	/* this isn't needed for the SI since ddpexInit won't fail
	   in the SI but maybe some vendors versions might...
	*/
  	diFreePEXBuffer(pPEXBuffer);
	return; 
    }

    /*
     *  Open up the default font
     */
    pPEXFont=(dipexFont *)xalloc((unsigned long)(sizeof(dipexFont)));
    if (!pPEXFont) {
	ErrorF("PEXExtensionInit: Memory error--could not allocate default PEX font\n");
  	diFreePEXBuffer(pPEXBuffer);
	return; 
    }
	
    pPEXFont->refcnt = 1;
    pPEXFont->ddFont.id = FakeClientID(0);
    
    defaultPEXFont = &(pPEXFont->ddFont);

    if ( OpenPEXFont(	(ddULONG)(strlen(DEFAULT_PEX_FONT_NAME)), 
			(ddUCHAR *)(DEFAULT_PEX_FONT_NAME),
			pPEXFont) != Success) {
	char *errmsg;
	char *static_message =
		    "PEXExtensionInit: Couldn't open default PEX font file ";

        errmsg = (char *) xalloc(strlen(static_message) +
				 strlen(DEFAULT_PEX_FONT_NAME) +
				 2  /* 1 byte for space between strings,
				     * 1 byte for null */
				 );
        if (errmsg) {
          sprintf(errmsg, "%s %s", static_message, DEFAULT_PEX_FONT_NAME);
	  ErrorF(errmsg);
          xfree(errmsg);
        }
	ErrorF("\n");

	xfree(pPEXFont);
	defaultPEXFont = 0; 
  	diFreePEXBuffer(pPEXBuffer);
	return; 
    }
    
    /*
     * Note that fonts resources are stored with the type (dipexFont *),
     * and they are referenced sometimes in the DD layer as diFontHandle
     * (which is a pointer to a ddFontResource).  Since the first part
     * of the dipexFont structure consists of a ddFontResource, this
     * works.  Even though it is ugly, it's best not to start changing
     * all of the font code at this time (right before a public release),
     * and hopefully, it will get cleaned up for PEX 6.0.
     */

    if (!AddResource(	pPEXFont->ddFont.id, PEXFontType,
			(pointer)(pPEXFont))) {
	ErrorF("PEXExtensionInit: Couldn't add default PEX font resource.\n");
	xfree(pPEXFont);
	defaultPEXFont = 0; 
  	diFreePEXBuffer(pPEXBuffer);
	return;
    }

    PextEntry = AddExtension( PEX_NAME_STRING, PEXNumberEvents, (PEXMaxError+1),
				    ProcPEXDispatch, ProcPEXDispatch,
				    PEXResetProc, StandardMinorOpcode);
    if (!PextEntry) {
	ErrorF("PEXExtensionInit: AddExtensions failed\n");
	xfree(pPEXFont);
	defaultPEXFont = 0; 
  	diFreePEXBuffer(pPEXBuffer);
	return; 
    }

    PexReqCode = PextEntry->base;
    PexErrorBase = PextEntry->errorBase;
    PexEventBase = PextEntry->eventBase;
    EventSwapVector[PexEventBase + PEXMaxHitsReached] = 
						    SwapPEXMaxHitsReachedEvent;
    
}


/*
 ******************************************************************************
 *
 *	Function:	InitPexClient
 *
 ******************************************************************************
 */
pexContext *
InitPexClient(client)
ClientPtr client;
{
    pexContext *cntxtPtr;
    XID pexId;

    /* Allocate space for the context table */
    cntxtPtr = (pexContext *) xalloc( (unsigned long)(sizeof( pexContext )
						+ sizeof(pexSwap)) );
    cntxtPtr->swap = (pexSwap *)(cntxtPtr+1);	/* this is silly */

    /* Create the resource id */
    pexId = PEXID( client, PEXCONTEXTTABLE );

    /* Add the connection context as a resource */
    if (!AddResource (pexId, PEXContextType, (pointer)cntxtPtr)) {
	unsigned short temp;
	temp = MinorOpcodeOfRequest(client);
	SendErrorToClient(  client, (unsigned) PexReqCode,
			    (temp), (unsigned long)0, (int) (BadAlloc));
	xfree((pointer)cntxtPtr);
	return(0); }

    /* setup the default proc vectors */
    cntxtPtr->pexRequest	    = PEXRequest;
    cntxtPtr->pexSwapReply	    = 0;
    cntxtPtr->pexSwapRequestOC	    = 0;
    cntxtPtr->pexSwapReplyOC	    = 0;
    cntxtPtr->swap->ConvertCARD16   = SwapCARD16;
    cntxtPtr->swap->ConvertCARD32   = SwapCARD32;
    cntxtPtr->swap->ConvertFLOAT    = 0;

    /* save the client ptr */
    cntxtPtr->client = client;

    return( cntxtPtr );

}

/*
 ******************************************************************************
 *
 *	Function:	static DeletePexClient
 *
 *	On Entry:	Client quitting, Pex resources need to be freed
 *
 *	On Exit:	Pex client resources freed.
 *
 *	Notes:
 *
 ******************************************************************************
 */

static int DeletePexClient(value, pexId)
pointer value;
XID pexId;
{
    pexContext *cntxtPtr = (pexContext *)value;

    /* Free space allocated for the client context */
    if (cntxtPtr) xfree( (pointer)cntxtPtr );

}


void PEXResetProc()
{
    extern ddpex43rtn FreePEXFont();
    extern void ddpexReset();
    diFontHandle    temp = defaultPEXFont;

    defaultPEXFont = 0;	/* force free */
    FreeResource(temp->id, RT_NONE);

    ddpexReset();
    diFreePEXBuffer(pPEXBuffer);
}


ErrorCode
PEXGenericResourceRequest (cntxtPtr, strmPtr)
pexContext *cntxtPtr;
pexReq *strmPtr;
{ }