hxtac.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxtac.cpp,v 1.9.20.2 2004/09/08 21:09:01 sehancher Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

#include "hxcom.h"
#include "hxtypes.h"
#include "hxcomm.h"
#include "hxausvc.h"
#include "ihxpckts.h"
#include "hxengin.h"
#include "hxcore.h"
#include "hxmap.h"
#include "hxgroup.h"
#include "basgroup.h"
#include "advgroup.h"
#include "hxplay.h"
#include "hxstrutl.h"

#include "hxtac.h"

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE
static const char HX_THIS_FILE[] = __FILE__;
#endif

// note: these constants much match the order of szTACNames
#define TitlePosition	   0
#define AuthorPosition	   1
#define CopyrightPosition  2
#define AbstractPosition   3
#define KeywordsPosition   4
#define DescriptionPosition 5

static const char* const szTACNames[] =
{
    "Title",
    "Author",
    "Copyright",
    "Abstract",
    "Keywords",
    "Description"
};


// init static data
UINT32 const TACData::NoFind = 9;

/////////////////////////////////////////////////////////////////////////
//      Method:
//              HXMasterTAC::HXMasterTAC
//      Purpose:
//              Constructor
//
HXMasterTAC::HXMasterTAC(HXBasicGroupManager* pGroupManager) :
      m_tacStatus(TAC_Pending)
    , m_pTACPropWatch(NULL)
    , m_pTACProps(NULL)
    , m_lRefCount(0)
#if defined(HELIX_FEATURE_REGISTRY)
    , m_pRegistry(NULL)
#endif /* HELIX_FEATURE_REGISTRY */
    , m_ptacPropIDs(NULL)
{
    m_pGroupManager = pGroupManager;
    HX_ADDREF(m_pGroupManager);

    m_pTACProps = new CHXHeader();
    m_pTACProps->AddRef();

    // init master tac prop ID array
    for (int n=0; n<NUMB_TAC_NAMES; n++)
    {
	m_masterTACPropIDs[n] = 0;
    }
}


/////////////////////////////////////////////////////////////////////////
//      Method:
//              HXMasterTAC::~HXMasterTAC
//      Purpose:
//              Destructor
//
HXMasterTAC::~HXMasterTAC()
{
    HX_RELEASE(m_pTACProps);
#if defined(HELIX_FEATURE_REGISTRY)
    HX_RELEASE(m_pRegistry);
#endif /* HELIX_FEATURE_REGISTRY */
    HX_DELETE(m_ptacPropIDs);
}

void HXMasterTAC::Close()
{
    // clear TAC prop watches and release prop watch object
    if (m_pTACPropWatch)
    {
	ResetTAC();

	HX_RELEASE(m_pTACPropWatch);
    }
    HX_RELEASE(m_pGroupManager);
}

BOOL		
HXMasterTAC::IsTACComplete(IHXValues* pProps)
{
    BOOL	bResult = TRUE;
    UINT16	nIdx = 0;
    IHXBuffer* pValue = NULL;
    
    if (!pProps)
    {
	bResult = FALSE;
	goto cleanup;
    }

    for(nIdx = 0; nIdx < NUMB_TAC_NAMES - 1; nIdx++)
    {
	if (HXR_OK != pProps->GetPropertyCString(szTACNames[nIdx], pValue) || !pValue)
	{	
	    bResult = FALSE;
	    break;
	}
	HX_RELEASE(pValue);
    }

cleanup:

    HX_RELEASE(pValue);

    return bResult;
}

void HXMasterTAC::SetRegistry(HXClientRegistry* pRegistry, UINT32 playerID)
{
#if defined(HELIX_FEATURE_REGISTRY)
    // save the reg ptr and addref
    m_pRegistry = pRegistry;
    m_pRegistry->AddRef();

    // and create properties in player's space
    char szPropName[1024]; /* Flawfinder: ignore */
    IHXBuffer* pPlayerName = NULL;
    HX_ASSERT(playerID != 0);
    if (HXR_OK == m_pRegistry->GetPropName(playerID, pPlayerName))
    {
	for (int n=0; n<NUMB_TAC_NAMES; n++)
	{
	    // add each master TAC prop
	    SafeSprintf(szPropName, 1024, "%s.%s", (char*) pPlayerName->GetBuffer(), szTACNames[n]);
	    m_masterTACPropIDs[n] = m_pRegistry->AddStr(szPropName, NULL);
	}

	HX_RELEASE(pPlayerName);
    }

    // create prop watch object
    m_pRegistry->CreatePropWatch(m_pTACPropWatch);
    m_pTACPropWatch->Init((IHXPropWatchResponse*) this);
#endif /* HELIX_FEATURE_REGISTRY */
}

/*
 * IUnknown methods
 */

/////////////////////////////////////////////////////////////////////////
//      Method:
//              IUnknown::QueryInterface
//      Purpose:
//              Implement this to export the interfaces supported by your
//              object.
//
STDMETHODIMP HXMasterTAC::QueryInterface(REFIID riid, void** ppvObj)
{
    QInterfaceList qiList[] =
        {
            { GET_IIDHANDLE(IID_IHXPropWatchResponse), (IHXPropWatchResponse*)this },
            { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXPropWatchResponse*)this },
        };
    
    return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
}

/////////////////////////////////////////////////////////////////////////
//      Method:
//              IUnknown::AddRef
//      Purpose:
//              Everyone usually implements this the same... feel free to use
//              this implementation.
//
STDMETHODIMP_(ULONG32) HXMasterTAC::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

/////////////////////////////////////////////////////////////////////////
//      Method:
//              IUnknown::Release
//      Purpose:
//              Everyone usually implements this the same... feel free to use
//              this implementation.
//
STDMETHODIMP_(ULONG32) HXMasterTAC::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
	return m_lRefCount;
    }

    delete this;
    return 0;
}

#if defined(HELIX_FEATURE_REGISTRY)
// IHXPropWatchResponse methods

STDMETHODIMP
HXMasterTAC::AddedProp(const UINT32 id,
			    const HXPropType propType,
			    const UINT32 ulParentHash)
{
    return HXR_NOTIMPL;
}

STDMETHODIMP
HXMasterTAC::ModifiedProp(const UINT32 id,
			       const HXPropType propType,
			       const UINT32 ulParentHash)
{
    if (m_ptacPropIDs)
    {
	// first see which prop this is (0-3) and copy data 
	// to equivilent unfied Player prop
	UINT32 masterID = 0;
	TACData* pTACData = NULL;
	IHXBuffer*	pValue = NULL;
	LISTPOSITION pos = m_ptacPropIDs->GetHeadPosition();
	while (pos)
	{
	    // get next tac data object
	    pTACData = (TACData*) m_ptacPropIDs->GetNext(pos);

	    // find the equivilent master prop ID
	    masterID = pTACData->FindMasterIndex(id);
	    if (masterID != TACData::NoFind)
	    {
		// get prop from ID 
		m_pRegistry->GetStrById(id, pValue);
		if (pValue)
		{
		    // set new master tac prop
		    m_pRegistry->SetStrById(m_masterTACPropIDs[masterID], pValue);
		    HX_RELEASE(pValue);
		}

		break;
	    }
	}
    }

    return HXR_OK;
}

STDMETHODIMP
HXMasterTAC::DeletedProp(const UINT32 id,
			      const UINT32 ulParentHash)
{
    HRESULT hRes = HXR_OK;

    // clear TAC prop watches and release prop watch object
    if (m_pTACPropWatch)
    {
	if (m_ptacPropIDs)
	{
	    TACData* pTACData = NULL;
	    LISTPOSITION pos = m_ptacPropIDs->GetHeadPosition();
	    while (pos)
	    {
		// get next TAC data object 
		pTACData = (TACData*) m_ptacPropIDs->GetNext(pos);

		// see if this ID is part of this TAC data object
		if (pTACData->IsIDPresent(id))
		{
		    pTACData->Clear(id);
		    break;
		}
	    }
	}

	// clear the watch now
	hRes = m_pTACPropWatch->ClearWatchById(id);
    }

    return hRes;
}
#endif /* HELIX_FEATURE_REGISTRY */

/************************************************************************
 *      Method:
 *          HXMasterTAC::ResetTAC
 *      Purpose:
 *          Reset all TAC related members in preparation for next group
 *
 */
void HXMasterTAC::ResetTAC(BOOL bResetStatus /*=TRUE*/, BOOL bClearMasterProps /*=FALSE*/)
{
    if (bResetStatus)
    {
	m_tacStatus = TAC_Pending;
    }

    TACData* pTACData = NULL;
    if (m_ptacPropIDs)
    {
	LISTPOSITION pos = m_ptacPropIDs->GetHeadPosition();
	while (pos)
	{
	    // get next TAC data object 
	    pTACData = (TACData*) m_ptacPropIDs->GetNext(pos);

	    // clear all watches set
	    pTACData->ClearAll(m_pTACPropWatch);

	    // free tac data object
	    delete pTACData;
	    pTACData = NULL;
	}

	// remove all list entries 
	m_ptacPropIDs->RemoveAll();
	HX_DELETE(m_ptacPropIDs);
    }

    // clear the master tac props value if this flag is set 
    if (bClearMasterProps)
    {
	HX_RELEASE(m_pTACProps);

	m_pTACProps = new CHXHeader();
	m_pTACProps->AddRef();

#if defined(HELIX_FEATURE_REGISTRY)
	// set values in registry
	IHXBuffer* pValue = NULL;
	for (int i=0; i<NUMB_TAC_NAMES; i++)
	{
	    UCHAR nullString[1];
	    *nullString = '\0';

	    // set to blank string
	    pValue = new CHXBuffer();
	    pValue->AddRef();

	    pValue->Set(nullString, 1);

	    m_pRegistry->SetStrById(m_masterTACPropIDs[i], pValue);

	    HX_RELEASE(pValue);
	}
#endif /* HELIX_FEATURE_REGISTRY */
    }
}

/************************************************************************
 *      Method:
 *          HXMasterTAC::CheckTrackAndSourceOnTrackStarted
 *      Purpose:
 *           Private function used to examine track props for TAC info
 *
 */
BOOL HXMasterTAC::CheckTrackAndSourceOnTrackStarted(INT32 nGroup, 
						  INT32 nTrack, 
						  UINT32 sourceID)
{
    BOOL res = TRUE;

    // if we have no tac yet, or, if we have a Source TAC set and 
    // in fact the track props have TAC info, try for Track props...
    if (m_tacStatus == TAC_Pending || m_tacStatus == TAC_Source)
    {
	// see if track props have TAC info
	if (!CheckTrackForTACInfo(nGroup, nTrack))
	{
	    // finally, if Track Props have no TAC, check the Source props! 
	    res = CheckSourceForTACInfo(nGroup, nTrack, sourceID);
	}
    }

    return res;
}

/************************************************************************
 *      Method:
 *          HXMasterTAC::CheckGroupForTACInfo
 *      Purpose:
 *          Private function used to examine group props for TAC info
 *
 */
BOOL HXMasterTAC::CheckGroupForTACInfo(INT32 nGroup)
{
    BOOL bFoundTAC = CheckPresentationForTACInfo();
    if (bFoundTAC)
    {
	return bFoundTAC;
    }
	
    // first get the group object's properties using the IHXGroup
    IHXGroup* pGroup = NULL;
    if (m_pGroupManager && 
	HXR_OK == m_pGroupManager->GetGroup((UINT16) nGroup, pGroup))
    {
	// now get the props
	IHXValues* pGroupProps = pGroup->GetGroupProperties();

	// now search the group props for TAC info
	RetrieveTACProperties(pGroupProps);
	if (m_pTACProps && IsTACComplete(m_pTACProps))
	{
	    SetTAC(m_pTACProps, TAC_Group);

	    bFoundTAC = TRUE;
	}
	else if (pGroupProps) // the group has no TAC props, so check the individidual tracks
	{
	    for (int n=0; !bFoundTAC && n<pGroup->GetTrackCount(); n++)
	    {
		// now get the next track
		IHXValues* pTrack = NULL;
		if (HXR_OK == pGroup->GetTrack((UINT16) n, pTrack))
		{	
		    // now search the props for TAC info
		    RetrieveTACProperties(pTrack);
		    if (m_pTACProps && IsTACComplete(m_pTACProps))
		    {
			// promote track props to group
			IHXBuffer* pValue = NULL;
			UINT16 nIdx;
			for(nIdx = 0; nIdx < NUMB_TAC_NAMES; nIdx++)
			{
			    m_pTACProps->GetPropertyCString(szTACNames[nIdx], pValue);
			    if (pValue)
			    {
	    			pGroupProps->SetPropertyCString(szTACNames[nIdx], pValue);
	    			HX_RELEASE(pValue);
			    }
			}

			// set new tac info 
			SetTAC(m_pTACProps, TAC_Group);

			bFoundTAC = TRUE;
		    }