smlparse.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: smlparse.cpp,v 1.2.12.2 2004/07/13 18:27:31 bobclark 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.
 * 
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 *    http://www.helixcommunity.org/content/tck
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 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>

#include "hxtypes.h"
#include "hxresult.h"
#include "hxcom.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxformt.h"
#include "hxengin.h"
#include "hxplugn.h"
#include "hxpends.h"
#include "hxasm.h"
#include "hxprefs.h"
#include "hxupgrd.h"
#include "hxassert.h"
#include "chxpckts.h"
#include "upgrdcol.h"
#include "nptime.h"
#include "smpte.h"
#include "debug.h"
#include "hxstrutl.h"
#include "hxstring.h"
#include "cbqueue.h"
#include "hxslist.h"
#include "hxurl.h"
#include "hxmap.h"
#include "hxstack.h"
#include "hxwintyp.h"
#include "chxxtype.h"
#include "hxparse.h"

#include "hxxml.h"
#include "xmlreslt.h"

#include "looseprs.h"
#include "hxxmlprs.h" //HXXMLParser

#include "sm1elem.h"
#include "sm1time.h"
#include "sm1error.h"
#include "sm1parse.h"

#include "hxmon.h"

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

static const UINT32 MAX_DRIVER_PACKET_SIZE = 1024;
static const UINT32 INITIAL_STREAM1_TIMESTAMP = 1;
static const UINT32 INITIAL_STREAM0_TIMESTAMP = 0;
static const UINT32 MAX_ERROR_LEN = 1024;

static const char* const RN_PREFIX = "rn";
static const char* const RN_TAG_RENDERER_LIST = "rn:renderer-list";
static const char* const RN_TAG_RENDERER = "rn:renderer";
static const char* const SYSTEM_COMPONENT_NAMESPACE = "http://features.real.com/systemComponent";
static const char* const SYSTEM_COMPONENT = "systemComponent";

static const struct smil1ColorTable
{
    char* m_pColorName;
    UINT8 m_ucRed;
    UINT8 m_ucGreen;
    UINT8 m_ucBlue;
} Smil1ColorTable[] =
{
    {"black", 	0x00, 0x00, 0x00},
    {"silver", 	0xc0, 0xc0, 0xc0},
    {"gray",  	0x80, 0x80, 0x80},
    {"white", 	0xff, 0xff, 0xff},
    {"maroon",	0x80, 0x00, 0x00},
    {"red",   	0xff, 0x00, 0x00},
    {"purple",	0x80, 0x00, 0x80},
    {"fuchsia", 0xff, 0x00, 0xff},
    {"green",	0x00, 0x80, 0x00},
    {"lime",	0x00, 0xff, 0x00},
    {"olive",	0x80, 0x80, 0x00},
    {"yellow",	0xff, 0xff, 0x00},
    {"navy",	0x00, 0x00, 0x80},
    {"blue",	0x00, 0x00, 0xff},
    {"teal",	0x00, 0x80, 0x80},
    {"aqua",	0x00, 0xff, 0xff},
    {0,		0x00, 0x00, 0x00}
};

static const struct smil1TagTable
{
    SMIL1NodeTag m_tag;
    const char* m_name;
} smil1TagTable[] =
{
    {SMILSmil,		    "smil"},
    {SMILMeta,		    "meta"},
    {SMILHead,		    "head"},
    {SMILBody,		    "body"},
    {SMILBasicLayout,	    "layout"},
    {SMILRootLayout,	    "root-layout"},
    {SMILRegion,	    "region"},
    {SMILSwitch,	    "switch"},
    {SMILText,		    "text"},
    {SMILImg,		    "img"},
    {SMILRef,		    "ref"},
    {SMILAudio,		    "audio"},
    {SMILVideo,		    "video"},
    {SMILAnimation,	    "animation"},
    {SMILTextstream,	    "textstream"},
    {SMILAnchor,	    "anchor"},
    {SMILAAnchor,	    "a"},
    {SMILPar,		    "par"},
    {SMILSeq,		    "seq"},
    {SMILRNRendererList,    RN_TAG_RENDERER_LIST},
    {SMILRendererPreFetch,  RN_TAG_RENDERER},
    {SMILUnknown,	    "unknown"}
};


CSmil1Parser::CSmil1Parser(IUnknown* pContext):
    m_pContext(pContext),
    m_pClassFactory(NULL),
    m_pISystemRequired(NULL),
    m_pNodeList(0),
    m_pNodeListStack(0),
    m_pPacketQueue(0),
    m_pIDMap(0),
    m_pAddGroupMap(0),
    m_pSourceUpdateList(0),
    m_pRequireTagsMap(0),
    m_bNoNamespaces(FALSE),
    m_bRNNamespace(FALSE),
    m_bIgnoreUnrecognizedElements(TRUE),
    m_bSMILRootLayoutAlreadyFound(FALSE),
    m_bSMIL10FullCompliance(FALSE),
    m_pActiveNamespaceMap(NULL),
    m_pNSConflictList(NULL),
    m_bTimestampsResolved(FALSE),
    m_pCurNode(0),
    m_pNodeDependencies(0),
    m_pCurrentDependentNode(0),
    m_pAnchorStack(0),
    m_pCurrentAnchor(0),
    m_pEndLayout(0),
    m_ulBandwidthPreference(0),
    m_ulScreenHeightPreference(0),
    m_ulScreenWidthPreference(0),
    m_ulScreenDepthPreference(0),
    m_pLanguagePreferenceList(0),
    m_bCaptionsPreference(FALSE),
    m_pOverdubOrCaptionPreference(0),
    m_pBasePath(0),
    m_pTagAttributeMap(0),
    m_bContainsSource(FALSE),
    m_pEncoding(0),
    m_pTrackHintList(0),
    m_pParser(NULL),
    m_pResponse(NULL),
    m_ulErrorLineNumber(0),
    m_ulErrorColumnNumber(0),
    m_pErrorText(NULL)
    , m_bStoreErrors(FALSE)
    , m_pErrors(NULL)
    , m_ulPersistentComponentID(0)
    , m_elementWithinTag(WithinUnknown)
    , m_pVarName(NULL)
    , m_ulNextVar(0)
    , m_pTimelineElementManager(NULL)
{
    if(m_pContext)
    {
	m_pContext->AddRef();
	m_pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pClassFactory);
    }

    initRequireTags();
    initTagAttributes();
    getPreferences();
    m_pVarName = new char [256];
    m_pTimelineElementManager = new CSmil1TimelineElementManager;
}

CSmil1Parser::~CSmil1Parser()
{
    deleteTagAttributes();
    HX_DELETE(m_pRequireTagsMap);

    if (m_pErrors)
    {
	int size = m_pErrors->GetSize();
	for (int i =0; i < size; ++i)
	{
	    IHXBuffer* pBuf = (IHXBuffer*)(*m_pErrors)[i];
	    HX_RELEASE(pBuf);
	    (*m_pErrors)[i] = NULL;
	}
	HX_DELETE(m_pErrors);
    }
    
    if (m_pActiveNamespaceMap != NULL)
    {
	CHXMapStringToOb::Iterator ndxBuffer = m_pActiveNamespaceMap->Begin();
	for (; ndxBuffer != m_pActiveNamespaceMap->End(); ++ndxBuffer)
	{
	    IHXBuffer* pBuffer = (IHXBuffer*)(*ndxBuffer);
	    HX_RELEASE(pBuffer);
	}
	HX_DELETE(m_pActiveNamespaceMap);
    }

    if (m_pNSConflictList != NULL)
    {
	CHXSimpleList::Iterator ndx = m_pNSConflictList->Begin();
	for (; ndx != m_pNSConflictList->End(); ++ndx)
	{
	    SMIL1Namespace* pNS = (SMIL1Namespace*)(*ndx);
	    HX_DELETE(pNS);
	}
	HX_DELETE(m_pNSConflictList);
    }

    HX_DELETE(m_pNodeDependencies);
    HX_DELETE(m_pAnchorStack);
    HX_VECTOR_DELETE(m_pEncoding);
    if(m_pLanguagePreferenceList)
    {
	CHXSimpleList::Iterator i = m_pLanguagePreferenceList->Begin();
	for(; i != m_pLanguagePreferenceList->End(); ++i)
	{
	    char* pLang = (char*)(*i);
	    delete[] pLang;
	}
	HX_DELETE(m_pLanguagePreferenceList);
    }
    HX_DELETE(m_pOverdubOrCaptionPreference);
    HX_DELETE(m_pBasePath);

    close();

    HX_RELEASE(m_pClassFactory);
    HX_RELEASE(m_pContext);
    HX_VECTOR_DELETE(m_pVarName);
    HX_DELETE(m_pTimelineElementManager);
}

void
CSmil1Parser::initRequireTags()
{
    //XXXBAB - add required tags here
#if 0
    m_pRequireTagsMap = new CHXMapStringToOb;
    (*m_pRequireTagsMap)["foo-require"] = 0;
    (*m_pRequireTagsMap)["boo-require"] = 0;
#endif

}

void
CSmil1Parser::getPreferences()
{
    IHXPreferences*	pPrefs = 0;
    IHXRegistry*	pRegistry = NULL;

    m_pContext->QueryInterface(IID_IHXRegistry, (void**)&pRegistry);

    if(HXR_OK == m_pContext->QueryInterface(
	IID_IHXPreferences, (void**)&pPrefs))
    {
	IHXBuffer* pBuf = 0;
	CHXString strTemp;
	strTemp.Format("%s.%s",HXREGISTRY_PREFPROPNAME,"Language");

	if(pRegistry && HXR_OK == pRegistry->GetStrByName(strTemp, pBuf))
	{
	    // language preference can be a comma-separated list

	    const char* pLang = (const char*)pBuf->GetBuffer();
	    // gonna call strtok, so copy the string...
	    char* pLangCopy = new_string(pLang);
	    m_pLanguagePreferenceList = new CHXSimpleList;
	    char* pTok = strtok(pLangCopy, ",");
	    while(pTok)
	    {
		char* pLangString = new_string(pTok);
		m_pLanguagePreferenceList->AddTail(pLangString);
		pTok = strtok(NULL, ",");
	    }
	    delete[] pLangCopy;
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("bandwidth", pBuf)  ||
		// /Fixes PR 84098 (SMIL 1.0 version) on Mac whose player
		// registry is case-sensitive and the registry value is
		// Bandwidth with a capital B:
		HXR_OK == pPrefs->ReadPref("Bandwidth", pBuf))
	{
	    m_ulBandwidthPreference = 
		(UINT32)atol((const char*)pBuf->GetBuffer());
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("screen_depth", pBuf))
	{
	    m_ulScreenDepthPreference =
		(UINT32)atol((const char*)pBuf->GetBuffer());
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("screen_height", pBuf))
	{
	    m_ulScreenHeightPreference =
		(UINT32)atol((const char*)pBuf->GetBuffer());
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("screen_width", pBuf))
	{
	    m_ulScreenWidthPreference =
		(UINT32)atol((const char*)pBuf->GetBuffer());
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("caption_switch", pBuf))
	{
	    m_bCaptionsPreference = 
		(UINT32)atol((const char*)pBuf->GetBuffer());
	    HX_RELEASE(pBuf);
	}
	if(HXR_OK == pPrefs->ReadPref("overdub_or_caption", pBuf))
	{
	    const char* pStr = (const char*)pBuf->GetBuffer();
	    m_pOverdubOrCaptionPreference = new_string(pStr);
	    HX_RELEASE(pBuf);
	}

	HX_RELEASE(pPrefs);
    }

    HX_RELEASE(pRegistry);
}

void
CSmil1Parser::close()
{
    HX_DELETE(m_pPacketQueue);
    HX_DELETE(m_pEndLayout);
    HX_DELETE(m_pTrackHintList);
    HX_RELEASE(m_pResponse);
    HX_RELEASE(m_pErrorText);
    if (m_pParser)
    {
	m_pParser->Close();
	HX_RELEASE(m_pParser);
    }
    HX_RELEASE(m_pISystemRequired);

    if(m_pIDMap)
    {
	CHXMapStringToOb::Iterator i = m_pIDMap->Begin();
	for(; i != m_pIDMap->End(); ++i)
	{
	    SMIL1Node* pNode = (SMIL1Node*)(*i);
	    HX_DELETE(pNode->m_pElement);
	}
	HX_DELETE(m_pIDMap);
    }

    if(m_pAddGroupMap)
    {
	CHXMapLongToObj::Iterator i = m_pAddGroupMap->Begin();
	for(; i != m_pAddGroupMap->End(); ++i)
	{
	    CSmil1AddGroup* pAddGroup = (CSmil1AddGroup*)(*i);
	    delete pAddGroup;
	}
	HX_DELETE(m_pAddGroupMap);
    }

    if(m_pSourceUpdateList)
    {
	CHXSimpleList::Iterator i = m_pSourceUpdateList->Begin();
	for(; i != m_pSourceUpdateList->End(); ++i)
	{
	    CSmil1SourceUpdate* pUpdate = (CSmil1SourceUpdate*)(*i);
	    delete pUpdate;
	}
	HX_DELETE(m_pSourceUpdateList);
    }

    if (m_pActiveNamespaceMap)
    {
	CHXMapStringToOb::Iterator ndxBuffer = m_pActiveNamespaceMap->Begin();
	for (; ndxBuffer != m_pActiveNamespaceMap->End(); ++ndxBuffer)
	{
	    IHXBuffer* pBuffer = (IHXBuffer*)(*ndxBuffer);
	    HX_RELEASE(pBuffer);
	}
	HX_DELETE(m_pActiveNamespaceMap);
    }

    if (m_pNSConflictList != NULL)
    {
	CHXSimpleList::Iterator ndx = m_pNSConflictList->Begin();
	for (; ndx != m_pNSConflictList->End(); ++ndx)
	{
	    SMIL1Namespace* pNS = (SMIL1Namespace*)(*ndx);
	    HX_DELETE(pNS);
	}
	HX_DELETE(m_pNSConflictList);
    }

    delete m_pNodeListStack;
    if(m_pNodeList)
    {
	delete m_pNodeList->m_pParentNode;
    }
}

HX_RESULT
CSmil1Parser::init(BOOL bStoreErrors)
{
    HX_RESULT rc = HXR_OK;

    close();
    m_pNodeListStack = new CHXStack;
    m_pPacketQueue = new CHXSimpleList;
    m_pIDMap = new CHXMapStringToOb;
    m_pAddGroupMap = new CHXMapLongToObj;
    m_bStoreErrors = bStoreErrors;
    if (m_bStoreErrors)
    {
	// XXXJHUG  error stuff.
	// In the future if there was any reason, we could 
	// store the errors in the nodes that the errors occurred in.
	// for now when we get an error notification, we will
	// just call the storeError function which will add
	// a new IHXBuffer to this array..  This will also be
	// called when problems are found with tags...
	// this will save having to walk the tree when it 
	// is time to dump the errors.
	m_pErrors = new CHXPtrArray;
    }

    SMIL1Node* pRootNode = new SMIL1Node;
    pRootNode->m_id = "root";
    pRootNode->m_name = "root";
    m_pNodeList = new SMIL1NodeList;
    pRootNode->m_pNodeList = m_pNodeList;
    m_pNodeList->m_pParentNode = pRootNode;
    m_pNodeListStack->Push(pRootNode);

#ifdef USE_EXPAT_FOR_SMIL
    rc = m_pClassFactory->CreateInstance(CLSID_IHXXMLParser, (void**)&m_pParser);
    if (FAILED(rc))
    {
	// they don't have the parser...  use old one?
	// Don't QI core for IID_IHXXMLParser; use our own instance.
	m_pParser = new HXXMLParser;
	if (m_pParser)
	{
	    rc = HXR_OK;
	    m_pParser->AddRef();
	}
	else
	{
	    rc = HXR_OUTOFMEMORY;
	}
    }
    HX_RELEASE(pFact);
    if (SUCCEEDED(rc))
    {
	m_pResponse = new CSmil1ParserResponse(this);
	m_pResponse->AddRef();
	// Expat is created off the CCF.
	// In strict mode it requires 100% compliant XML.   We will
	// create a "loose" version that allows &'s in attribute values.
	// (this parser is still MUCH stricter than the original XML parser)
	rc = m_pParser->Init(m_pResponse, "iso-8859-1", FALSE);	
    }

#else
    // Don't QI core for IID_IHXXMLParser; use our own instance.
    HXXMLParser* parser = new HXXMLParser();