old_hxpckts.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: old_hxpckts.cpp,v 1.6.8.3 2004/07/09 01:45:59 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 ***** */

/************************************************************************
 *  Defines
 */
#define EXTREME_RTP_TIME    0xFFFFFFFF


/************************************************************************
 *  Includes
 */
#include "hxtypes.h"
#include "hxresult.h"
#include "hxcom.h"
#include "ihxpckts.h"
#include "old_hxpckts.h"
#include "hlxclib/string.h"

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


/////////////////////////////////////////////////////////////////////////
//	CHXPacket
/////////////////////////////////////////////////////////////////////////
//	Method:
//		IUnknown::QueryInterface
//	Purpose:
//		Implement this to export the interfaces supported by your 
//		object.
//
STDMETHODIMP CHXPacket::QueryInterface(REFIID riid, void** ppvObj)
{
	QInterfaceList qiList[] =
	{
		{ GET_IIDHANDLE(IID_IUnknown), this },
		{ GET_IIDHANDLE(IID_IHXPacket), (IHXPacket*) 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) CHXPacket::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

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

    delete this;
    return 0;
}

/************************************************************************
 *	Method:
 *		IHXPacket::Get
 *	Purpose:
 *		TBD
 */
STDMETHODIMP CHXPacket::Get
(
    REF(IHXBuffer*)	pBuffer, 
    REF(ULONG32)	ulTime,
    REF(UINT16)		uStreamNumber,
    REF(UINT8)		unASMFlags,
    REF(UINT16)		unASMRuleNumber
)
{
    return _Get(pBuffer,
		ulTime,
		uStreamNumber,
		unASMFlags,
		unASMRuleNumber);
}

/************************************************************************
 *	Method:
 *		IHXPacket::GetBuffer
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(IHXBuffer*) CHXPacket::GetBuffer()
{
    // Whenever a COM object is returned out of an
    // interface, it should be AddRef()'d.
    if (m_pBuffer) m_pBuffer->AddRef();
    return m_pBuffer; 
}

/************************************************************************
 *	Method:
 *		IHXPacket::GetTime
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(ULONG32) CHXPacket::GetTime()
{
    return m_ulTime;
}

/************************************************************************
 *	Method:
 *		IHXPacket::GetFlags
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(UINT8) CHXPacket::GetASMFlags()
{
    return m_unASMFlags;
}

/************************************************************************
 *	Method:
 *		IHXPacket::GetStreamNumber
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(UINT16) CHXPacket::GetStreamNumber()
{
    return m_uStreamNumber;
}

/************************************************************************
 *	Method:
 *		IHXPacket::GetASMRuleNumber
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(UINT16) CHXPacket::GetASMRuleNumber()
{
    return m_unASMRuleNumber;
}

/************************************************************************
 *	Method:
 *		IHXPacket::IsLost
 *	Purpose:
 *		TBD
 */
STDMETHODIMP_(BOOL) CHXPacket::IsLost()
{ 
    return m_bIsLost;
}

/************************************************************************
 *	Method:
 *		IHXPacket::SetAsLost
 *	Purpose:
 *		TBD
 */
STDMETHODIMP CHXPacket::SetAsLost()
{
    HX_ASSERT(m_pBuffer == NULL);
    HX_ASSERT(m_ulTime == 0);
    if (m_pBuffer) return HXR_UNEXPECTED;
    m_bIsLost = TRUE;
    return HXR_OK; 
}

/************************************************************************
 *	Method:
 *		IHXPacket::Set
 *	Purpose:
 *		TBD
 */
STDMETHODIMP CHXPacket::Set
(
    IHXBuffer*		pBuffer, 
    ULONG32		ulTime,
    UINT16		uStreamNumber,
    UINT8		unASMFlags,
    UINT16		unASMRuleNumber
)
{
    return _Set(pBuffer, 
		ulTime,
		uStreamNumber,
		unASMFlags,
		unASMRuleNumber);
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::GetRTP
 */
STDMETHODIMP CHXPacket::GetRTP				
(
    REF(IHXBuffer*)	pBuffer, 
    REF(ULONG32)	ulTime,
    REF(ULONG32)	ulRTPTime,
    REF(UINT16)		uStreamNumber,
    REF(UINT8)		unASMFlags,
    REF(UINT16)		unASMRuleNumber
)
{
    HX_ASSERT(HXR_UNEXPECTED == HXR_OK);
    return HXR_UNEXPECTED;
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::GetRTPTime
 */
STDMETHODIMP_(ULONG32) CHXPacket::GetRTPTime()
{
    HX_ASSERT(HXR_UNEXPECTED == HXR_OK);
    return EXTREME_RTP_TIME;
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::SetRTP
 */
STDMETHODIMP CHXPacket::SetRTP
(
    IHXBuffer*	    pBuffer, 
    ULONG32	    ulTime,
    ULONG32	    ulRTPTime,
    UINT16	    uStreamNumber,
    UINT8	    unASMFlags,
    UINT16	    unASMRuleNumber
)
{
    HX_ASSERT(HXR_UNEXPECTED == HXR_OK);
    return HXR_UNEXPECTED;
}

inline HX_RESULT CHXPacket::_Get(IHXBuffer*   &pBuffer,
				 ULONG32	    &ulTime,
				 UINT16	    &uStreamNumber,
				 UINT8	    &unASMFlags,
				 UINT16	    &unASMRuleNumber)
{
    pBuffer	    = m_pBuffer;
    ulTime	    = m_ulTime;
    uStreamNumber   = m_uStreamNumber;
    unASMFlags	    = m_unASMFlags;
    unASMRuleNumber = m_unASMRuleNumber;

    // Whenever a COM object is returned out of an
    // interface, it should be AddRef()'d.
    if (m_pBuffer) m_pBuffer->AddRef();

    return HXR_OK;
}

inline HX_RESULT CHXPacket::_Set(IHXBuffer*   pBuffer, 
				 ULONG32	    ulTime,
				 UINT16	    uStreamNumber,
				 UINT8	    unASMFlags,
				 UINT16	    unASMRuleNumber)
{
    /* We allow changing the packet info when it is owned
     * by atmost one user.
     */
    if (m_lRefCount > 1)
    {
	HX_ASSERT(FALSE);
	return HXR_UNEXPECTED;
    }

    if (m_pBuffer) m_pBuffer->Release();
    m_pBuffer = pBuffer;
    if (m_pBuffer)
    {
	m_pBuffer->AddRef();
    }

    m_ulTime		= ulTime;
    m_uStreamNumber	= uStreamNumber;
    m_unASMFlags	= unASMFlags;
    m_unASMRuleNumber	= unASMRuleNumber;

    return HXR_OK;
}

// serialization method
void
CHXPacket::Pack(IHXPacket* pPacket, char* pData, UINT32& ulSize)
{
    UINT16	uValue = 0;
    UINT32	ulValue = 0;
    UINT32	ulBufferSize = 0;
    IHXBuffer*	pBuffer = NULL;

    if (!pPacket)
    {
	goto cleanup;
    }

    pBuffer = pPacket->GetBuffer();

    if (pBuffer)
    {
	ulBufferSize = pBuffer->GetSize();
    }

    // figure out the size 
    if (!pData)
    {
	ulSize = sizeof(HXPacketInfo) + ulBufferSize;
    }
    // pack the data
    else
    {
	*pData++ = (BYTE)pPacket->IsLost();					ulSize++;
	*pData++ = (BYTE)pPacket->GetASMFlags();				ulSize++;

	uValue = pPacket->GetASMRuleNumber();
	*pData++ = (BYTE)uValue; *pData++ = (BYTE)(uValue >> 8); 		ulSize += 2;

	uValue = pPacket->GetStreamNumber();
	*pData++ = (BYTE)uValue; *pData++ = (BYTE)(uValue >> 8); 		ulSize += 2;

	ulValue = pPacket->GetTime();
	*pData++ = (BYTE)ulValue; *pData++ = (BYTE)(ulValue >> 8);
	*pData++ = (BYTE)(ulValue >> 16); *pData++ = (BYTE)(ulValue >> 24);	ulSize += 4;

	if (pBuffer)
	{
	    memcpy(pData, (char*)pBuffer->GetBuffer(), ulBufferSize); /* Flawfinder: ignore */
	    pData += ulBufferSize;						ulSize += ulBufferSize;
	}
    }
   		
cleanup:

    HX_RELEASE(pBuffer);

    return;
}   

void	
CHXPacket::UnPack(IHXPacket*& pPacket, char* pData, UINT32 ulSize)
{
    UINT16	    uValue = 0;
    UINT32	    ulValue = 0;
    IHXBuffer*	    pBuffer = NULL;
    HXPacketInfo   packetInfo;

    pPacket = NULL;

    if (!pData || !ulSize)
    {
	goto cleanup;
    }

    HX_ASSERT(ulSize >= sizeof(HXPacketInfo));

    packetInfo.lost = (BYTE)*pData++;	    ulSize--;
    packetInfo.ASMFlags = (BYTE)*pData++;   ulSize--;

    uValue = (BYTE)*pData++; uValue |= (((BYTE)*pData++) << 8);
    packetInfo.ASMRuleNumber = uValue;	    ulSize -= 2;

    uValue = (BYTE)*pData++; uValue |= (((BYTE)*pData++) << 8);
    packetInfo.streamNum = uValue;	    ulSize -= 2;

    ulValue = (BYTE)*pData++; ulValue |= (((BYTE)*pData++) << 8);
    ulValue |= (((BYTE)*pData++) << 16); ulValue |= (((BYTE)*pData++) << 24);
    packetInfo.time = ulValue;		    ulSize -= 4;

    if (ulSize)
    {
	pBuffer = new CHXBuffer();
	pBuffer->AddRef();

	pBuffer->Set((const UCHAR*)pData, ulSize);
    }
	
    pPacket = new CHXPacket();
    pPacket->AddRef();

    pPacket->Set(pBuffer, 
		 packetInfo.time, 
		 packetInfo.streamNum,
		 packetInfo.ASMFlags,
		 packetInfo.ASMRuleNumber);

    if (packetInfo.lost)
    {
	pPacket->SetAsLost();
    }

cleanup:

    HX_RELEASE(pBuffer);

    return;
}

/////////////////////////////////////////////////////////////////////////
//	CHXRTPPacket
/////////////////////////////////////////////////////////////////////////
//	Method:
//		IUnknown::QueryInterface
//	Purpose:
//		Implement this to export the interfaces supported by your 
//		object.
//
STDMETHODIMP CHXRTPPacket::QueryInterface(REFIID riid, void** ppvObj)
{
    if (IsEqualIID(riid, IID_IHXRTPPacket))
    {
	AddRef();
	*ppvObj = (IHXRTPPacket*) this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IHXPacket))
    {
	AddRef();
	*ppvObj = (IHXPacket*) this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IUnknown))
    {
	AddRef();
	*ppvObj = this;
	return HXR_OK;
    }

    *ppvObj = NULL;
    return HXR_NOINTERFACE;
}

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

    delete this;
    return 0;
}

/************************************************************************
 *	Method:
 *		IHXPacket::Set
 */
STDMETHODIMP CHXRTPPacket::Set
(
    IHXBuffer*		pBuffer, 
    ULONG32		ulTime,
    UINT16		uStreamNumber,
    UINT8		unASMFlags,
    UINT16		unASMRuleNumber
)
{
    m_ulRTPTime = ulTime;

    return _Set(pBuffer, 
		ulTime,
		uStreamNumber,
		unASMFlags,
		unASMRuleNumber);
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::GetRTP
 */
STDMETHODIMP CHXRTPPacket::GetRTP				
(
    REF(IHXBuffer*)	pBuffer, 
    REF(ULONG32)	ulTime,
    REF(ULONG32)	ulRTPTime,
    REF(UINT16)		uStreamNumber,
    REF(UINT8)		unASMFlags,
    REF(UINT16)		unASMRuleNumber
)
{
    ulRTPTime = m_ulRTPTime;

    return _Get(pBuffer,
		ulTime,
		uStreamNumber,
		unASMFlags,
		unASMRuleNumber);
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::GetRTPTime
 */
STDMETHODIMP_(ULONG32) CHXRTPPacket::GetRTPTime()
{
    return m_ulRTPTime;
}

/************************************************************************
 *	Method:
 *		IHXRTPPacket::SetRTP
 */
STDMETHODIMP CHXRTPPacket::SetRTP
(
    IHXBuffer*	    pBuffer, 
    ULONG32	    ulTime,
    ULONG32	    ulRTPTime,
    UINT16	    uStreamNumber,
    UINT8	    unASMFlags,
    UINT16	    unASMRuleNumber
)
{
    m_ulRTPTime = ulRTPTime;

    return _Set(pBuffer, 
		ulTime,
		uStreamNumber,
		unASMFlags,
		unASMRuleNumber);
}

/////////////////////////////////////////////////////////////////////////
//	CHXHeader
//
/////////////////////////////////////////////////////////////////////////
//	Method:
//		IUnknown::QueryInterface
//	Purpose:
//		Implement this to export the interfaces supported by your 
//		object.
//
STDMETHODIMP CHXHeader::QueryInterface(REFIID riid, void** ppvObj)
{
    if (IsEqualIID(riid, IID_IUnknown))
    {
	AddRef();
	*ppvObj = this;
	return HXR_OK;
    }
    else if (IsEqualIID(riid, IID_IHXValues))
    {
	AddRef();
	*ppvObj = (IHXValues*)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) CHXHeader::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

/////////////////////////////////////////////////////////////////////////
//	Method:
//		IUnknown::Release