ppffplin.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: ppffplin.cpp,v 1.8.16.1 2004/07/19 21:04:16 hubbe 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 ***** */

/////////////////////////////////////////////////////////////////////////////
// 
//  RealAudio Server side plugin that will sink to get live packets, create
//  a virtual .SDP file for the HTTP server to send to clients which will
//  start listening to the live multicast packets formatted in RTP.
//

/****************************************************************************
 *  Defines
 */
// #define _TIMELINE_TRACE
#define _GETPACKET_TRACE

#define INITGUID

#define RA_MINETYPE			"audio/x-pn-realaudio"
#define STANDARD_START_HXOFFSET	200	    // 100 ms
#define HX_COMMON_MIME_TYPE_FRAGMENT	"x-pn-"

#define TRANSPORT_BUFFERING_TIME	10	    // ms

#define MAX_TIME_GAP_FORWARD		20000
#define MAX_TIME_GAP_BACKWARD		5000
#define MAX_SUSPENDED_BUFFER_SIZE	1000

#define FLEX_BUFFER_SWITCHOVER_TIME	40000	    // 40 seconds

#define LISTENINING_TIME_INTERVAL	PP_SYNC_TIMEOUT_MS


/****************************************************************************
 *  Includes
 */
#include "hxtypes.h"
#include "hlxclib/windows.h"
#include "hxcom.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxformt.h"
#include "hxplugn.h"
#include "hxmon.h"
#include "hxerror.h"
#include "hxcore.h"
#include "hxprefs.h"
#include "rtptypes.h"
#include "hxrand.h"
#include "hxslist.h"
#include "hxstring.h"
#include "hxstrutl.h"
#include "chxpckts.h"
#include "hxbuffer.h"
#include "tconverter.h"
#include "asmrulep.h"
#include "hxtick.h"
#include "hxengin.h"
#include "netbyte.h"	// rninet_addr

#include "statinfo.h" // STREAM_STATS
#include "hxmangle.h" // CLIENT_ID_REGNAME
#include "hxurl.h"

// error reporting 
#include "hxxres.h"
#include "hxxrsmg.h"
#include "resid.h"
#include "scalmres.h"   // in coreres module

#include "packetq.h"

#include "carray.h"
#include "ppbin.h"

#include "ppfformat.ver"
#include "rtpwrap.h"
#include "ppffplin.h"
#include "ppffsrc.h"
#include "ppffstrm.h"
#include "ppffhttp.h"
#include "hxver.h"

#include "sdpchunk.h"
#include "sdppyldinfo.h"

#include "hxhyper.h"	// IHXHyperNavigation

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

#ifdef _AIX
#include "hxtbuf.h"
#include "dllpath.h"
ENABLE_MULTILOAD_DLLACCESS_PATHS(Ppffplin);
#endif

const UINT32	MS_PER_SECOND	= 1000;
const UINT32	MICRO_PER_MS	= 1000;


/***************************************************************************
 *  CPurePlayFileFormat static variables                         ref:  rprxypln.h
 *
 *  These variables are passed to the RMA core to provide information about
 *  this plug-in. They are required to be static in order to remain valid
 *  for the lifetime of the plug-in.
 */
const char*  CPurePlayFileFormat::zm_pDescription	= "RealNetworks Scalable Multicast Plugin";
const char*  CPurePlayFileFormat::zm_pCopyright		= HXVER_COPYRIGHT;
const char*  CPurePlayFileFormat::zm_pMoreInfoURL	= HXVER_MOREINFO;
const char*  CPurePlayFileFormat::zm_pFileMimeTypes[]	= {"application/sdp", NULL};
const char*  CPurePlayFileFormat::zm_pFileExtensions[]	= {"sdp", NULL};
const char*  CPurePlayFileFormat::zm_pFileOpenNames[]	= {"Scalable multicast stream description", NULL};


#ifdef _WINDOWS

#if defined(WIN32_PLATFORM_PSPC)
#define HDLL_TYPE HANDLE
#else
#define HDLL_TYPE HINSTANCE
#endif /* defined(WIN32_PLATFORM_PSPC) */

extern HDLL_TYPE g_hInstance;
#endif


#if defined(_TIMELINE_TRACE) || defined(_GETPACKET_TRACE)
FILE* m_tfile = NULL;
#endif	// _TIMELINE_TRACE || _GETPACKET_TRACE



/****************************************************************************
 * 
 *  Function:
 * 
 *	HXCreateInstance()
 * 
 *  Purpose:
 * 
 *	Function implemented by all plugin DLL's to create an instance of 
 *	any of the objects supported by the DLL. This method is similar to 
 *	Window's CoCreateInstance() in its purpose, except that it only 
 *	creates objects from this plugin DLL.
 *
 *	NOTE: Aggregation is never used. Therefore and outer unknown is
 *	not passed to this function, and you do not need to code for this
 *	situation.
 * 
 */

STDAPI ENTRYPOINT(HXCREATEINSTANCE)
(
    IUnknown**  /*OUT*/	ppIUnknown
)
{
    *ppIUnknown = (IUnknown*)(IHXFileSystemObject*)new CPurePlayFileFormat;
    if(*ppIUnknown)
    {
	(*ppIUnknown)->AddRef();
	return HXR_OK;
    }
    return HXR_OUTOFMEMORY;
}

CPurePlayFileFormat::CPurePlayFileFormat()
    : m_lRefCount(0)
    , m_pContext(NULL)
    , m_pStreamDesc(NULL)
    , m_pRTPInfo(NULL)
    , m_pLog(NULL)
    , m_pFileObject(NULL)
    , m_pFileBufferList(NULL)
    , m_pScheduler(NULL)
    , m_pClassFactory(NULL)
    , m_pFileHeader(NULL)
    , m_pRegistry(NULL)
    , m_pSDPDesc(NULL)
    , m_state(Init)
    , m_pFFResponse(NULL)
    , m_uActiveStreams(0)
    , m_pMasterSyncStream(NULL)
    , m_bInitialPacket(TRUE)
    , m_uStatusCode(HX_STATUS_READY)
    , m_pStatusDesc(NULL)
    , m_pCName(NULL)
    , m_pUserName(NULL)
    , m_pTool(NULL)  
    , m_pEmail(NULL)
    , m_hFileHeader(0)
    , m_bRMPresentation(TRUE)
#ifdef _ALLOW_TS_OFFSETTING
    , m_bDisableOffsetting(FALSE)
#else	// _ALLOW_TS_OFFSETTING
    , m_bDisableOffsetting(TRUE)
#endif	// _ALLOW_TS_OFFSETTING
    , m_bSourceAdmissionClosed(FALSE)
    , m_ulFileHeaderWaitStartTime(0)
    , m_ulListeningWaitStartTime(0)
    , m_ulServerTimeout(0)
    , m_bOneMoreTry(TRUE)
    , m_lSmallestTSStrm(-1)
    , m_tryUnicast(NO_TRY)
    , m_pRequest(NULL)
    , m_lRAStreamNum(NO_EXIST)
    , m_bWantClientStats(TRUE)
    , m_bAttempMulticast(TRUE)
    , m_ulFirstTSSent(0)
    , m_bFirstPktSent(FALSE)
    , m_bFirstPktRcvd(FALSE)
    , m_ulHXOffset(0)
    , m_pInterfaceMgr(NULL)
    , m_ppInterfacesReady(NULL)
    , m_ulNumInterfacesReady(0)
    , m_ulStartTimeMS(0)
#ifdef BW_BASED
    , m_lRuleNumber(-1)
#endif    
#ifdef _DEBUG
    , m_bFileHeaderReadyCalled(FALSE)
#endif    
{
    ;
}


CPurePlayFileFormat::~CPurePlayFileFormat() 
{ 
    HX_RELEASE(m_pContext);
    
    HX_RELEASE(m_pCName);
    HX_RELEASE(m_pUserName);
    HX_RELEASE(m_pTool);
    HX_RELEASE(m_pEmail);
}

// *** IUnknown methods ***
/////////////////////////////////////////////////////////////////////////
//  Method:
//	IUnknown::QueryInterface
//  Purpose:
//	Implement this to export the interfaces supported by your 
//	object.
//
STDMETHODIMP CPurePlayFileFormat::QueryInterface(REFIID riid, void** ppvObj)
{
    if (IsEqualIID(riid, IID_IHXTransportSyncServer))
    {
	AddRef();
	*ppvObj = (IHXTransportSyncServer*) this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IUnknown))
    {
	AddRef();
	*ppvObj = this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXPlugin))
    {
	AddRef();
	*ppvObj = (IHXPlugin*)this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXFileFormatObject))
    {
	AddRef();
	*ppvObj = (IHXFileFormatObject*)this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXFileResponse))
    {
	AddRef();
	*ppvObj = (IHXFileResponse*)this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXASMSource))
    {
	AddRef();
	*ppvObj = (IHXASMSource*)this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXPendingStatus))
    {
	AddRef();
	*ppvObj = (IHXPendingStatus*)this;
	return HXR_OK;
    }
    else if(IsEqualIID(riid, IID_IHXPropertyAdviser))
    {
	AddRef();
	*ppvObj = (IHXPropertyAdviser*)this;
	return HXR_OK;
    }
    
    *ppvObj = NULL;
    return HXR_NOINTERFACE;
}

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

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

    delete this;
    return 0;
}

/****************************************************************************
 *  IHXPlugin::GetPluginInfo                                ref:  hxplugn.h
 *
 *  This routine returns descriptive information about the plug-in, most
 *  of which is used in the About box of the user interface. It is called
     *  when the RMA core application is launched.
 */
STDMETHODIMP
CPurePlayFileFormat::GetPluginInfo
(
    REF(BOOL)	    /*OUT*/ bLoadMultiple,
    REF(const char*)/*OUT*/ pDescription,
    REF(const char*)/*OUT*/ pCopyright,
    REF(const char*)/*OUT*/ pMoreInfoURL,
    REF(UINT32)     /*OUT*/ ulVersionNumber
)
{
    bLoadMultiple = TRUE;   // Must be true for file formats.

    pDescription    = zm_pDescription;
    pCopyright	    = zm_pCopyright;
    pMoreInfoURL    = zm_pMoreInfoURL;
    ulVersionNumber = TARVER_ULONG32_VERSION;

    return HXR_OK;
}


/****************************************************************************
 *  IHXFileFormatObject::GetFileFormatInfo                  ref:  hxformt.h
 *
 *  This routine returns crucial information required to associate this
 *  plug-in with a given MIME type. This information tells the core which
 *  File Format plug-in to use for a particular URL. The routine is called
 *  when the RMA core application is launched.
 */
STDMETHODIMP
CPurePlayFileFormat::GetFileFormatInfo
(
    REF(const char**) /*OUT*/ pFileMimeTypes,
    REF(const char**) /*OUT*/ pFileExtensions,
    REF(const char**) /*OUT*/ pFileOpenNames
)
{
    pFileMimeTypes  = zm_pFileMimeTypes;
    pFileExtensions = zm_pFileExtensions;
    pFileOpenNames  = zm_pFileOpenNames;

    return HXR_OK;
}


/****************************************************************************
 *  IHXPlugin::InitPlugin                                   ref:  hxplugn.h
 *
 *  This routine performs initialization steps such as determining whether
 *  required interfaces are available. It is called when the RMA core 
 *  application is launched, and whenever an URL associated with this
 *  plug-in is opened.
 */
STDMETHODIMP
CPurePlayFileFormat::InitPlugin(IUnknown* /*IN*/ pContext)
{
    HX_RESULT theErr = HXR_OK;     
    int localizedErrCode = 0;

    m_pContext = pContext;
    
    if (NULL == m_pContext)
    {
    	theErr = HXR_INVALID_PARAMETER;
	localizedErrCode = IDS_ERR_SM_NO_CTXT;
    	goto bail;
    }
    m_pContext->AddRef();

    /*
     * Get the necessary interfaces
     */
    theErr = m_pContext->QueryInterface(IID_IHXErrorMessages,
					(void**)&m_pLog);
    if (theErr != HXR_OK || NULL == m_pLog)
    {
	theErr = HXR_INVALID_PARAMETER;
	localizedErrCode = IDS_ERR_SM_CTXT_QI_FAILED;
	goto bail;
    }

    theErr = m_pContext->QueryInterface(IID_IHXScheduler,
					(void**)&m_pScheduler);
	
    if (theErr != HXR_OK || NULL == m_pScheduler)
    {
	theErr = HXR_INVALID_PARAMETER;
	localizedErrCode = IDS_ERR_SM_CTXT_QI_FAILED;
	goto bail;
    }

    theErr = m_pContext->QueryInterface(IID_IHXRegistry,
					(void**)&m_pRegistry);

    if (theErr != HXR_OK || NULL == m_pRegistry)
    {
	theErr = HXR_INVALID_PARAMETER;
	localizedErrCode = IDS_ERR_SM_CTXT_QI_FAILED;
	goto bail;
    }

    theErr = m_pContext->QueryInterface(IID_IHXCommonClassFactory, 
    					(void**)&m_pClassFactory);

    if (theErr != HXR_OK || NULL == m_pClassFactory)
    {
    	theErr = HXR_INVALID_PARAMETER;
	localizedErrCode = IDS_ERR_SM_CTXT_QI_FAILED;
    	goto bail;
    }

bail:
    if (theErr != HXR_OK)
    {
	ReportError(localizedErrCode, HXLOG_WARNING, HXR_FAIL);
    }
    return theErr;
}


/****************************************************************************
 *  IHXFileFormatObject::InitFileFormat                     ref:  hxformt.h
 *
 *  This routine initializes the file, and stores references to objects used
 *  throughout the example. It is called whenever an URL associated with this