smlparse.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: smlparse.cpp,v 1.10.2.7 2004/07/13 23:02:47 ehodge 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 ***** */

// system
#include <time.h>
#include <math.h>
#if defined(_UNIX)  &&  (!(defined(_BEOS))) && (!(defined(_MAC_UNIX)))
/*for Display and Screen structs and X functions:*/
#include "hlxclib/string.h"
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <sys/types.h>
#endif

#if defined (_SYMBIAN)
#  ifdef _SYMBIAN7
#    include <hal_data.h> 
#  endif
#  include <hal.h>
#  include <coemain.h>
#  include <e32svr.h>
#  include <e32math.h>
#endif

// include
#include "hxtypes.h"
#include "hxwintyp.h"
#include "hxcom.h"
#include "hxcomm.h"
#include "hxprefs.h"
#include "hxxml.h"
#include "hxmon.h"
#include "smiltype.h"
#include "hxupgrd.h"
// pncont
#include "chxpckts.h"
#include "hxstring.h"
#include "hxslist.h"
#include "rtsputil.h"
#include "hxstack.h"
// pnmisc
#include "nptime.h"
#include "smpte.h"
#include "hxstrutl.h"
#include "hxurl.h"
#include "hxparse.h"
#include "hxwinver.h"
#include "dbcs.h" /* for HXGetNextChar() */
// rnxmllib
#include "xmlreslt.h"
#include "hxxmlprs.h"
// rmasmil
#include "smlelem.h"
#include "smltime.h"
#include "smlerror.h"
#include "smlprstime.h"
#include "animattr.h"
#include "binrymap.h"
#include "smlparse.h"
#include "parstabl.h"
#include "smlutil.h"
// pndebug
#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE
static const char HX_THIS_FILE[] = __FILE__;
#endif


#define TARGET_OF_LINK_DESTINATION_SOUND_LEVEL_STR "targetOfLinkDestnSndLevel"
#define TARGET_OF_LINK_SOURCE_SOUND_LEVEL_STR      "targetOfLinkSourceSndLevel"

#if defined(_DEBUG)
// /#define XXXEHODGE_DEBUG_EXCL_TRACK_REMOVAL
#if defined(XXXEHODGE_DEBUG_EXCL_TRACK_REMOVAL)
static BOOL bFirstExclTrackChangeDebugOut = TRUE;
#endif
#endif

#if defined(_DEBUG)
// /#define XXXEHODGE_DEBUG_RESETTIMELINEELEMENTDUR_AND_DELAY
#if defined(XXXEHODGE_DEBUG_RESETTIMELINEELEMENTDUR_AND_DELAY)
static BOOL bFirstResetTimelineElementDuration = TRUE;
#endif /*XXXEHODGE_DEBUG_RESETTIMELINEELEMENTDUR_AND_DELAY*/
#endif /*_DEBUG*/

// /This enables RealPlayer 8 (and prior) behavior when there is no explicit
// outer time container (seq, par, [or excl in a SMIL 2.0 doc]):
#define ALLOW_PLAYLIST_STYLE_SEQ  1
#define DONT_ALLOW_PLAYLIST_STYLE_SEQ_IF_EXPLICIT_OUTER_TIMECONTAINER  1

#define CHECKPENDING_TIME_VS_CURTIME_FUDGE_FACTOR   150 /* in milliseconds .*/

// /XXXEH- in order to get Interop Timing #25.6 working, we had to trick the
// core into staying alive by adding this track in slightly before the one
// that paused it has finished:
#define FUDGE_FACTOR_WHEN_DEFERRING_PAST_END_OF_GROUP     100 /*milliseconds*/
#define FUDGE_FACTOR_FOR_DEFERRING_PRIOR_TO_END_OF_GROUP  500 /*milliseconds*/

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";


// /These are all the SMIL Module namespaces recognized by the
// SMIL 2.0 Language:
// (From http://www.w3.org/AudioVideo/Group/Modules/
// smil-modules.html#smilModulesNSSMIL20ModuleIdentifiers)
const char* const CSmilParser::zm_pSupportedSMIL2ModuleNamespaces[
	NUM_SUPPORTED_SMIL_2_0_MODULE_NAMESPACES+1] =
{
    // /XXXEH- TODO: OPTIMIZATION: these all share the same base URL, so
    // we should just store the last part here and combine with the base
    // when comparing to a used namespace:
    "http://www.w3.org/2000/SMIL20/CR/NestedTimeContainers",
    "http://www.w3.org/2000/SMIL20/CR/DeprecatedFeatures",
    "http://www.w3.org/2000/SMIL20/CR/HostLanguage",
#if defined(HANDLE_CATCHALL_NS_FOR_ALL_SMIL_2_0_MODULES)
    "http://www.w3.org/2000/SMIL20/CR/",
#else
    "",
#endif
    "http://www.w3.org/2000/SMIL20/CR/Language",
    "http://www.w3.org/2000/SMIL20/CR/IntegrationSet",

    // /The rest are SMIL 2.0 Module namespaces:
    "http://www.w3.org/2000/SMIL20/CR/AccessKeyTiming",
    "http://www.w3.org/2000/SMIL20/CR/AudioLayout",
    "http://www.w3.org/2000/SMIL20/CR/BasicAnimation",
    "http://www.w3.org/2000/SMIL20/CR/BasicContentControl",
    "http://www.w3.org/2000/SMIL20/CR/BasicInlineTiming",
    "http://www.w3.org/2000/SMIL20/CR/BasicLayout",
    "http://www.w3.org/2000/SMIL20/CR/BasicLinking",
    "http://www.w3.org/2000/SMIL20/CR/BasicMedia",
    "http://www.w3.org/2000/SMIL20/CR/BasicTimeContainers",
    "http://www.w3.org/2000/SMIL20/CR/BasicTransistions",
    "http://www.w3.org/2000/SMIL20/CR/BrushMedia",
    "http://www.w3.org/2000/SMIL20/CR/CoordinatedTransitions",
    "http://www.w3.org/2000/SMIL20/CR/CustomTestAttributes",
    "http://www.w3.org/2000/SMIL20/CR/EventTiming",
    "http://www.w3.org/2000/SMIL20/CR/ExclTimeContainers",
    "http://www.w3.org/2000/SMIL20/CR/FillDefault",
    "http://www.w3.org/2000/SMIL20/CR/HierarchicalLayout",
#if defined(HANDLE_SMIL_2_0_INLINETRANSITIONS_MODULE)
    "http://www.w3.org/2000/SMIL20/CR/InlineTransitions",
#else
    "",
#endif
    "http://www.w3.org/2000/SMIL20/CR/LinkingAttributes",
    "http://www.w3.org/2000/SMIL20/CR/MediaAccessibility",
    "http://www.w3.org/2000/SMIL20/CR/MediaClipMarkers",
    "http://www.w3.org/2000/SMIL20/CR/MediaClipping",
    "http://www.w3.org/2000/SMIL20/CR/MediaDescription",
    "http://www.w3.org/2000/SMIL20/CR/MediaMarkerTiming",
    "http://www.w3.org/2000/SMIL20/CR/MediaParam",
    "http://www.w3.org/2000/SMIL20/CR/Metainformation",
    "http://www.w3.org/2000/SMIL20/CR/MinMaxTiming",
    "http://www.w3.org/2000/SMIL20/CR/MultiArcTiming",
    "http://www.w3.org/2000/SMIL20/CR/MultiWindowLayout",
    "http://www.w3.org/2000/SMIL20/CR/ObjectLinking",
    "http://www.w3.org/2000/SMIL20/CR/PrefetchControl",
    "http://www.w3.org/2000/SMIL20/CR/PrevTiming",
    "http://www.w3.org/2000/SMIL20/CR/RepeatTiming",
    "http://www.w3.org/2000/SMIL20/CR/RepeatValueTiming",
    "http://www.w3.org/2000/SMIL20/CR/RestartDefault",
    "http://www.w3.org/2000/SMIL20/CR/RestartTiming",
    "http://www.w3.org/2000/SMIL20/CR/SkipContentControl",
#if defined(HANDLE_SMIL_2_0_SPLINEANIMATION_MODULE)
    "http://www.w3.org/2000/SMIL20/CR/SplineAnimation",
#else
    "",
#endif
    "http://www.w3.org/2000/SMIL20/CR/Structure",
    "http://www.w3.org/2000/SMIL20/CR/SyncbaseTiming",
    "http://www.w3.org/2000/SMIL20/CR/SyncBehavior",
    "http://www.w3.org/2000/SMIL20/CR/SyncBehaviorDefault",
#if defined(HANDLE_SMIL_2_0_SYNCMASTER_MODULE)
    "http://www.w3.org/2000/SMIL20/CR/SyncMaster",
#else
    "",
#endif
    "http://www.w3.org/2000/SMIL20/CR/TimeContainerAttributes",
#if defined(HANDLE_SMIL_2_0_TIME_MANIPULATIONS_MODULE)
    "http://www.w3.org/2000/SMIL20/CR/TimeManipulations",
#else
    "",
#endif
    "http://www.w3.org/2000/SMIL20/CR/TransitionModifiers",
    "http://www.w3.org/2000/SMIL20/CR/WallclockTiming",
    "http://www.3gpp.org/SMIL20/PSS4/",
    "http://www.3gpp.org/SMIL20/PSS5/",
    NULL
};

static const struct smilTagTable
{
    SMILNodeTag m_tag;
    const char* m_name;
} SmilTagTable[] =
{
    {SMILSmil,		    "smil"},
    {SMILMeta,		    "meta"},
    {SMILMetadata,	    "metadata"},
    {SMILHead,		    "head"},
    {SMILBody,		    "body"},
    {SMILBasicLayout,	    "layout"},
    {SMILRootLayout,	    "root-layout"},
    {SMILRegion,	    "region"},
    {SMILRegPoint,	    "regPoint"},
    {SMILViewport,	    "topLayout"},
    {SMILTransition,	    "transition"},
    {SMILSwitch,	    "switch"},
    {SMILText,		    "text"},
    {SMILImg,		    "img"},
    {SMILRef,		    "ref"},
    {SMILAudio,		    "audio"},
    {SMILVideo,		    "video"},
    {SMILAnimation,	    "animation"},
    {SMILTextstream,	    "textstream"},
    {SMILBrush,		    "brush"},
    {SMILPrefetch,	    "prefetch"},
    {SMILAnchor,	    "anchor"},
    {SMILArea,		    "area"},
    {SMILAAnchor,	    "a"},
    {SMILPar,		    "par"},
    {SMILSeq,		    "seq"},
    {SMILExcl,		    "excl"},
    {SMILPriorityClass,	    "priorityClass"},
    {SMILCustomAttributes,  "customAttributes"},
    {SMILCustomTest,	    "customTest"},
    {SMILRNRendererList,    RN_TAG_RENDERER_LIST},
    {SMILRendererPreFetch,  RN_TAG_RENDERER},
    {SMILAnimate,           "animate"},
    {SMILSet,               "set"},
    {SMILAnimateMotion,     "animateMotion"},
    {SMILAnimateColor,      "animateColor"},
    {SMILUnknown,	    "unknown"}
};

SMILNamespace::SMILNamespace(SMILNamespace* pNS)
{
    if (pNS)
    {
        m_name   = new_string(pNS->m_name);
        m_pValue = pNS->m_pValue;
        if (m_pValue)
        {
            m_pValue->AddRef();
        }
    }
}

SMILNamespace::SMILNamespace(const char* name, IHXBuffer* pVal)
{
    m_name   = new_string(name);
    m_pValue = pVal;
    if (m_pValue)
    {
        m_pValue->AddRef();
    }
}

SMILNamespace::~SMILNamespace()
{
    HX_VECTOR_DELETE(m_name);
    HX_RELEASE(m_pValue);
}


CSmilParser::CSmilParser(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_pCustomTestMap(NULL),
    m_bNoNamespaces(FALSE),
    m_bRNNamespace(FALSE),
    // XXXJHUG -- shouldn't we always ignor?
    m_bIgnoreUnrecognizedElements(TRUE),
    m_bSMILRootLayoutAlreadyFound(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_lLastCheckPendingTime(-1),
    m_ulBandwidthPreference(0),
    m_ulScreenHeightPreference(0),
    m_ulScreenWidthPreference(0),
    m_ulScreenDepthPreference(0),
    m_pLanguagePreferenceList(0),
    m_bCaptionsPreference(FALSE),
    m_pOverdubOrCaptionPreference(0),
    m_bSystemAudioDescPreference(FALSE),
    m_bUseSystemCPU(TRUE), // /If regkey not present, treat as "TRUE"
    m_bUseSystemOS(TRUE), // /If regkey not present, treat as "TRUE"
    m_pBasePath(0),
    m_pTagAttributeMap(0),
    m_bContainsSource(FALSE),
    m_bContainsInitiallyScheduledTrack(FALSE),
    m_ulDurIfNoInitialTracksScheduled(DEFAULT_DUR_IF_NO_SOURCES_SCHEDULED),
    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_pBeginTimeSyncList(NULL)
    , m_pEndTimeSyncList(NULL)
    , m_pBeginEventList(NULL)
    , m_pEndEventList(NULL)
    , m_pBeginMediaMarkerList(NULL)
    , m_pEndMediaMarkerList(NULL)
    , m_pClipBeginMarkerList(NULL)
    , m_pClipEndMarkerList(NULL)
    , m_pPendingBeginTimeList(NULL)
    , m_pPendingEndTimeList(NULL)
    , m_pOnLoadURLList(NULL)
    , m_pOnLoadURLListCopyForPostSeek(NULL)
    , m_bHandlePostSeekOnLoadURLs(FALSE)
#if defined(HELIX_FEATURE_SMIL2_TRANSITIONS)
    , m_pTransitionMap(NULL)
#endif /* #if defined(HELIX_FEATURE_SMIL2_TRANSITIONS) */
    , m_bFirstPacket(TRUE)
    , m_pDefaultNamespace(NULL)
    , m_ulPlatformVer(HX_PLATFORM_UNKNOWN)
    , m_ulPersistentComponentID(0)
    , m_ulPersistentComponentDelay(0)
    , m_ulPersistentComponentDuration(0)
    , m_bAllowPlaylistBehavior(FALSE)
    , m_elementWithinTag(WithinUnknown)
    , m_pElementMap(NULL)
    , m_pAttributeMap(NULL)
#if defined(HELIX_FEATURE_SMIL2_VALIDATION)
    , m_pExtElementMap(NULL)
    , m_pExtAttributeMap(NULL)
    , m_pNamespaceMap(NULL)
    , m_pLegalAttrMap(NULL)
    , m_pContentModelMap(NULL)
    , m_pAttrType(NULL)
    , m_ppEnumAttrMap(NULL)
    , m_ppReqAttrList(NULL)
#endif /* #if defined(HELIX_FEATURE_SMIL2_VALIDATION) */
    , m_pValNSList(NULL)
    , m_pXMMFElementList(NULL)
    , m_lParseError(HXR_OK)
    , m_pAnimateElementList(NULL)
    , m_pBeginTimeMap(NULL)
    , m_pEndTimeMap(NULL)
    , m_pExternalEventList(NULL)
    , m_pExternalEventListPos(NULL)
    , m_bAllTracksNeedReflushHint(FALSE)
    , m_pElementsWithHandlerList(NULL)
    , m_pVarName(NULL)
    , m_ulNextVar(1024)
    , m_pTimelineElementManager(NULL)
{
    if(m_pContext)
    {
	m_pContext->AddRef();
	m_pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pClassFactory);
    }

    initRequireTags();
    initTagAttributes();
    getPreferences();
    initParsingMaps();

    m_versionInfo.dwPlatformId = HX_PLATFORM_UNKNOWN;
    m_versionInfo.dwMachineType = HX_MACHINE_UNKNOWN;
    // /Get the OS and CPU version information:
    m_ulPlatformVer = HXGetWinVer(&m_versionInfo);
    // Allocate the variable name buffer
    m_pVarName = new char [256];
    // Allocate the timeline element manager
    m_pTimelineElementManager = new CSmilTimelineElementManager;
}