sdpplin.cpp
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上传日期:2013-07-19
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: sdpplin.cpp,v 1.11.30.1 2004/07/09 02:05:16 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 ***** */
- /////////////////////////////////////////////////////////////////////////////
- //
- // SDP Stream Description plugin
- //
- #include "sdpplin.ver"
- #include "hlxclib/stdlib.h"
- #define INITGUID 1
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxstring.h"
- #include "hxslist.h"
- #include "chxpckts.h"
- #include "hxplugn.h"
- #include "hxengin.h"
- #include "hxsdesc.h"
- #include "hxcomm.h"
- #include "hxmon.h"
- #include "hxstrutl.h" // strcasecmp
- #include "hxcore.h" // IHXPlayer
- #include "hxupgrd.h" // IHXUpgradeCollection
- #include "rtsputil.h"
- #include "rtspprop.h"
- #include "sdpprop.h"
- #include "sdpplin.h"
- #include "sdptypes.h"
- #include "sdpmdparse.h"
- #include "sdpmdgen.h"
- #include "sdppyldinfo.h"
- #undef INITGUID
- #include "hxver.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- #ifdef _AIX
- #include "hxtbuf.h"
- #include "dllpath.h"
- ENABLE_MULTILOAD_DLLACCESS_PATHS(Sdpplin);
- #endif
- #if defined(HELIX_FEATURE_SERVER)
- #define SDP_MAJOR 6L
- #define SDP_MINOR 0L
- #define SDP_RELEASE 7L
- #define SDP_BUILD 4248L
- #define SDP_MEDIA_DESC_GENERATOR_VERSION HX_ENCODE_PROD_VERSION(SDP_MAJOR,SDP_MINOR,SDP_RELEASE,SDP_BUILD)
- #endif
- #if defined(HELIX_CONFIG_NOSTATICS)
- #include "globals/hxglobalint.h"
- #define DLLRefType const INT32
- #else
- #define DLLRefType INT32
- #endif
- static DLLRefType g_nRefCount_sdpp = 0 ;
- INT32& RefCountSDPP()
- {
- #if defined(HELIX_CONFIG_NOSTATICS)
- return HXGlobalInt32::Get((GlobalID)&g_nRefCount_sdpp);
- #else
- return g_nRefCount_sdpp;
- #endif
- }
- /****************************************************************************
- *
- * 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*)(IHXPlugin*)new CSDPStreamDescription;
- if (*ppIUnknown)
- {
- (*ppIUnknown)->AddRef();
- return HXR_OK;
- }
- return HXR_OUTOFMEMORY;
- }
- /****************************************************************************
- *
- * Function:
- *
- * CanUnload()
- *
- * Purpose:
- *
- * Function implemented by all plugin DLL's if it returns HXR_OK
- * then the pluginhandler can unload the DLL
- *
- */
- STDAPI ENTRYPOINT(CanUnload2)(void)
- {
- return (RefCountSDPP() ? HXR_FAIL : HXR_OK);
- }
- STDAPI ENTRYPOINT(CanUnload)(void)
- {
- return ENTRYPOINT(CanUnload2)();
- }
- const char* const CSDPStreamDescription::zm_pDescription = "RealNetworks SDP Stream Description Plugin";
- const char* const CSDPStreamDescription::zm_pCopyright = HXVER_COPYRIGHT;
- const char* const CSDPStreamDescription::zm_pMoreInfoURL = HXVER_MOREINFO;
- const char* const CSDPStreamDescription::zm_pStreamDescriptionMimeType =
- "application/sdp";
- /************************************************************************
- * Method:
- * IHXPlugin::InitPlugin
- * Purpose:
- * Initializes the plugin for use. This interface must always be
- * called before any other method is called. This is primarily needed
- * so that the plugin can have access to the context for creation of
- * IHXBuffers and IMalloc.
- */
- STDMETHODIMP CSDPStreamDescription::InitPlugin(IUnknown* /*IN*/ pContext)
- {
- HX_RESULT res = HXR_FAILED;
- m_pContext = pContext;
- m_pContext->AddRef();
- m_pContext->QueryInterface(IID_IHXCommonClassFactory, (void**)&m_pCCF);
- if (m_pCCF != NULL)
- {
- res = HXR_OK;
- }
- if (SUCCEEDED(res) && m_pDescParser)
- {
- res = m_pDescParser->Init(pContext);
- }
- if (SUCCEEDED(res) && m_pDescGenerator)
- {
- res = m_pDescGenerator->Init(pContext);
- }
- return res;
- }
- /************************************************************************
- * Method:
- * IHXPlugin::GetPluginInfo
- * Purpose:
- * Returns the basic information about this plugin. Including:
- *
- * bLoadMultiple whether or not this plugin DLL can be loaded
- * multiple times. All File Formats must set
- * this value to TRUE.
- * pDescription which is used in about UIs (can be NULL)
- * pCopyright which is used in about UIs (can be NULL)
- * pMoreInfoURL which is used in about UIs (can be NULL)
- */
- STDMETHODIMP CSDPStreamDescription::GetPluginInfo
- (
- REF(BOOL) /*OUT*/ bLoadMultiple,
- REF(const char*) /*OUT*/ pDescription,
- REF(const char*) /*OUT*/ pCopyright,
- REF(const char*) /*OUT*/ pMoreInfoURL,
- REF(ULONG32) /*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;
- }
- /************************************************************************
- * Method:
- * IHXPlugin::GetStreamDescriptionInfo
- * Purpose:
- * If this object is a stream description object this method returns
- * information vital to the instantiation of stream description plugins.
- * If this object is not a stream description object, it should return
- * HXR_UNEXPECTED.
- */
- STDMETHODIMP CSDPStreamDescription::GetStreamDescriptionInfo
- (
- REF(const char*) /*OUT*/ pStreamDescriptionMimeType
- )
- {
- pStreamDescriptionMimeType = zm_pStreamDescriptionMimeType;
- return HXR_OK;
- }
- // *** IUnknown methods ***
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- // Purpose:
- // Implement this to export the interfaces supported by your
- // object.
- //
- STDMETHODIMP CSDPStreamDescription::QueryInterface(REFIID riid, void** ppvObj)
- {
- 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_IHXStreamDescription))
- {
- AddRef();
- *ppvObj = (IHXStreamDescription*)this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IHXStreamDescriptionSettings))
- {
- AddRef();
- *ppvObj = (IHXStreamDescriptionSettings*)this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IHXRTPPayloadInfo))
- {
- AddRef();
- *ppvObj = (IHXRTPPayloadInfo*)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) CSDPStreamDescription::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) CSDPStreamDescription::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- // *** IHXStreamDescription methods ***
- CSDPStreamDescription::CSDPStreamDescription()
- : m_lRefCount(0)
- , m_pDescParser(0)
- , m_pDescGenerator(0)
- , m_pContext(0)
- , m_pCCF(0)
- {
- RefCountSDPP()++;
- m_pDescParser = new SDPMediaDescParser(TARVER_ULONG32_VERSION);
- #if defined(HELIX_FEATURE_SERVER)
- m_pDescGenerator = new SDPMediaDescGenerator(SDP_MEDIA_DESC_GENERATOR_VERSION);
- #endif /* defined(HELIX_FEATURE_SERVER) */
- }
- CSDPStreamDescription::~CSDPStreamDescription()
- {
- RefCountSDPP()--;
- delete m_pDescParser;
- HX_DELETE(m_pDescGenerator);
- HX_RELEASE(m_pCCF);
- HX_RELEASE(m_pContext);
- }
- HX_RESULT
- CSDPStreamDescription::Update()
- {
- IHXPlayer* pPlayer = NULL;
- if (HXR_OK == m_pContext->QueryInterface(IID_IHXPlayer, (void**)&pPlayer))
- {
- IHXUpgradeCollection* pUpgradeCollection = NULL;
- if (HXR_OK == pPlayer->QueryInterface(IID_IHXUpgradeCollection,
- (void**)&pUpgradeCollection))
- {
- IHXBuffer* pBuf = NULL;
- m_pCCF->CreateInstance(CLSID_IHXBuffer, (void**)&pBuf);
- if (!pBuf)
- {
- HX_RELEASE(pUpgradeCollection);
- HX_RELEASE(pPlayer);
- return HXR_OUTOFMEMORY;
- }
- pBuf->Set((const BYTE*)zm_pStreamDescriptionMimeType,
- strlen(zm_pStreamDescriptionMimeType) + 1);
- pUpgradeCollection->Add(eUT_Required, pBuf, 0, 0);
- HX_RELEASE(pBuf);
- }
- HX_RELEASE(pUpgradeCollection);
- }
- HX_RELEASE(pPlayer);
- return HXR_OK;
- }
- STDMETHODIMP
- CSDPStreamDescription::GetValues(IHXBuffer* pDescription,
- REF(UINT16) nValues, REF(IHXValues**) pValueArray)
- {
- HX_RESULT res = HXR_UNEXPECTED;
- if (m_pDescParser)
- res = m_pDescParser->Parse(pDescription, nValues, pValueArray);
- if (HXR_REQUEST_UPGRADE == res)
- {
- res = Update();
- if (HXR_OK == res)
- res = HXR_REQUEST_UPGRADE;
- }
- return res;
- }
- STDMETHODIMP
- CSDPStreamDescription::GetDescription(UINT16 nValues, IHXValues** pValueArray,
- REF(IHXBuffer*) pDescription)
- {
- HX_RESULT res = HXR_UNEXPECTED;
- if (m_pDescGenerator)
- res = m_pDescGenerator->Generate(nValues, pValueArray, pDescription);
- return res;
- }
- // *** IHXStreamDescriptionSettings methods ***
- STDMETHODIMP
- CSDPStreamDescription::SetOption(const char* pKey, IHXBuffer* pVal)
- {
- if (pKey == NULL || pVal == NULL)
- {
- return HXR_POINTER;
- }
- const char* pszVal = (const char*)pVal->GetBuffer();
- if (pszVal == NULL || *(pszVal+pVal->GetSize()-1) != ' ')
- {
- return HXR_UNEXPECTED;
- }
- HX_RESULT pnr = HXR_FAIL;
- if ((strcasecmp(pKey, "UseOldEOL") == 0) && m_pDescGenerator)
- {
- if (strcasecmp(pszVal, "true") == 0)
- {
- m_pDescGenerator->SetUseOldEOL(TRUE);
- pnr = HXR_OK;
- }
- else if (strcasecmp(pszVal, "false") == 0)
- {
- m_pDescGenerator->SetUseOldEOL(FALSE);
- pnr = HXR_OK;
- }
- }
- else if (strcasecmp(pKey, "AbsoluteBaseURL") == 0)
- {
- if (*pszVal == '0')
- {
- m_pDescGenerator->SetUseAbsoluteURL(FALSE);
- pnr = HXR_OK;
- }
- else if (*pszVal == '1')
- {
- m_pDescGenerator->SetUseAbsoluteURL(TRUE);
- pnr = HXR_OK;
- }
- }
- else if (strcasecmp(pKey, "SessionGUID") == 0)
- {
- if (*pszVal == '0')
- {
- m_pDescGenerator->SetUseSessionGUID(FALSE);
- pnr = HXR_OK;
- }
- else if (*pszVal == '1')
- {
- m_pDescGenerator->SetUseSessionGUID(TRUE);
- }
- }
- // add new options here
- return pnr;
- }
- STDMETHODIMP
- CSDPStreamDescription::GetOption(const char* pKey, REF(IHXBuffer*) pVal)
- {
- if (pKey == NULL)
- {
- return HXR_POINTER;
- }
- if (m_pCCF == NULL)
- {
- return HXR_UNEXPECTED;
- }
- m_pCCF->CreateInstance(CLSID_IHXBuffer, (void**)&pVal);
- if (pVal == NULL)
- {
- return HXR_OUTOFMEMORY;
- }
- HX_RESULT pnr = HXR_FAIL;
- char* pszVal;
- if ((strcasecmp(pKey, "UseOldEOL") == 0) && m_pDescGenerator)
- {
- pVal->SetSize(5+1);
- pszVal = (char*)pVal->GetBuffer();
- strcpy(pszVal, (m_pDescGenerator->GetUseOldEOL()?"true":"false")); /* Flawfinder: ignore */
- pnr = HXR_OK;
- }
- else
- {
- BOOL bIsOptionSet = FALSE;
- if (strcasecmp(pKey, "AbsoluteBaseURL") == 0)
- {
- bIsOptionSet = m_pDescGenerator->GetUseAbsoluteURL();
- pnr = HXR_OK;
- }
- else if (strcasecmp(pKey, "SessionGUID") == 0)
- {
- bIsOptionSet = m_pDescGenerator->GetUseSessionGUID();
- pnr = HXR_OK;
- }
- if (HXR_OK == pnr)
- {
- pVal->SetSize(5+1);
- pszVal = (char*)pVal->GetBuffer();
- strcpy(pszVal, (bIsOptionSet ? "true":"false")); /* Flawfinder: ignore */
- }
- }
- if (pnr != HXR_OK)
- {
- HX_RELEASE(pVal);
- }
- return pnr;
- }
- // *** IHXRTPPayloadInfo methods ***
- /************************************************************************
- * Method:
- * IHXRTPPayloadInfo::PayloadSupported
- * Purpose:
- * Returns TRUE if this payload type is handled by this interface
- */
-
- BOOL
- CSDPStreamDescription::IsPayloadSupported(UINT32 ulRTPPayloadType)
- {
- // make sure it's not one of reserved/unassigned ones
- if (SDPIsStaticPayload(ulRTPPayloadType) &&
- SDPMapPayloadToEncodingName(ulRTPPayloadType))
- {
- return TRUE;
- }
- return FALSE;
- }
- /************************************************************************
- * Method:
- * IHXRTPPayloadInfo::GetTimestampConversionFactors
- * Purpose:
- * Retrieves the RTP and RMA factors for RTP to RMA timestamp ratio.
- * RTP->RMA is RTPTimestamp * RTPFactor / HXFactor
- * RMA->RTP is HXTimestamp * HXFactor / RTPFactor
- *
- * Note: does not check if the payload type is supported
- */
-
- STDMETHODIMP
- CSDPStreamDescription::GetTimestampConversionFactors
- (
- UINT32 ulRTPPayloadType,
- REF(UINT32) /*OUT*/ ulRTPFactor,
- REF(UINT32) /*OUT*/ ulHXFactor
- )
- {
- HX_ASSERT(IsPayloadSupported(ulRTPPayloadType));
- ulRTPFactor = SDPMapPayloadToRTPFactor(ulRTPPayloadType);
- ulHXFactor = SDPMapPayloadToRMAFactor(ulRTPPayloadType);
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXRTPPayloadInfo::IsTimestampDeliverable
- * Purpose:
- * Returns TRUE if this payload type is timestamp deliverable
- */
-
- BOOL
- CSDPStreamDescription::IsTimestampDeliverable(UINT32 ulRTPPayloadType)
- {
- HX_ASSERT(IsPayloadSupported(ulRTPPayloadType));
- return SDPIsTimestampDeliverable(ulRTPPayloadType);
- }