127 lines
2.9 KiB
C++
127 lines
2.9 KiB
C++
|
|
/*
|
|
|
|
Copyright (c) 1998-1999 Microsoft Corporation
|
|
|
|
Module Name:
|
|
blbsdp.cpp
|
|
|
|
Abstract:
|
|
|
|
|
|
Author:
|
|
|
|
*/
|
|
|
|
#include "stdafx.h"
|
|
|
|
#include "blbgen.h"
|
|
#include "blbsdp.h"
|
|
|
|
const CHAR g_CharSetString[] = "\na=charset:";
|
|
|
|
|
|
HRESULT
|
|
SDP_BLOB::SetBstr(
|
|
IN BSTR SdpPacketBstr
|
|
)
|
|
{
|
|
// convert string to ANSI using the optional bstr base class
|
|
HRESULT HResult = SDP_BSTRING::SetBstr(SdpPacketBstr);
|
|
BAIL_ON_FAILURE(HResult);
|
|
|
|
// parse the ANSI character string
|
|
if ( !ParseSdpPacket(
|
|
SDP_BSTRING::GetCharacterString(),
|
|
SDP_BSTRING::GetCharacterSet()
|
|
) )
|
|
{
|
|
return HRESULT_FROM_ERROR_CODE(GetLastError());
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
HRESULT
|
|
SDP_BLOB::SetTstr(
|
|
IN TCHAR *SdpPacketTstr
|
|
)
|
|
{
|
|
ASSERT(NULL != SdpPacketTstr);
|
|
|
|
#ifdef _UNICODE // TCHAR is WCHAR
|
|
|
|
BSTR SdpPacketBstr = SysAllocString(SdpPacketTstr);
|
|
BAIL_IF_NULL(SdpPacketBstr, E_OUTOFMEMORY);
|
|
|
|
HRESULT HResult = SetBstr(SdpPacketBstr);
|
|
SysFreeString(SdpPacketBstr);
|
|
return HResult;
|
|
|
|
#else // TCHAR is CHAR
|
|
|
|
// parse the ANSI character string
|
|
if ( !ParseSdpPacket(SdpPacketTstr) )
|
|
{
|
|
return HRESULT_FROM_ERROR_CODE(GetLastError());
|
|
}
|
|
|
|
// associate the character string with the SDP_BSTRING base instance
|
|
// *** need a SetCharacterStringByPtr for optimizing this copy
|
|
if ( !SDP_BSTRING::SetCharacterStringByCopy(SdpPacketTstr) )
|
|
{
|
|
return HRESULT_FROM_ERROR_CODE(GetLastError());
|
|
}
|
|
|
|
return S_OK;
|
|
|
|
#endif // _UNICODE
|
|
|
|
// should never reach here
|
|
ASSERT(FALSE);
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
HRESULT
|
|
SDP_BLOB::GetBstr(
|
|
OUT BSTR *SdpPacketBstr
|
|
)
|
|
{
|
|
if ( !SDP::IsValid() )
|
|
{
|
|
return HRESULT_FROM_WIN32(ERROR_INVALID_DATA);
|
|
}
|
|
|
|
// keep track of the old SDP packet pointer for a check below because we may reallocate m_SdpPacket
|
|
// in the call to GenerateSdpPacket, but we may have a pointer to the old SDP packet stored as a
|
|
// string by reference. If this is the case we need to be sure to SetCharacterStringByReference(m_SdpPacket).
|
|
CHAR * OldSdpPacket = m_SdpPacket;
|
|
|
|
// generate the character string SDP packet
|
|
if ( !SDP::GenerateSdpPacket() )
|
|
{
|
|
return HRESULT_FROM_ERROR_CODE(GetLastError());
|
|
}
|
|
|
|
// check if the sdp packet has changed since last time
|
|
// ZoltanS: if the pointers are equal, we have no way of knowing
|
|
// without doing Unicode-to-ASCII conversion; always reassociate.
|
|
|
|
char * pszBstrVersion = SDP_BSTRING::GetCharacterString();
|
|
if( NULL == pszBstrVersion )
|
|
{
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
if ( ( pszBstrVersion == m_SdpPacket ) || ( pszBstrVersion == OldSdpPacket ) || strcmp(pszBstrVersion, m_SdpPacket) )
|
|
{
|
|
// associate the optional bstr instance with the sdp packet character string
|
|
SDP_BSTRING::SetCharacterStringByReference(m_SdpPacket);
|
|
}
|
|
|
|
return SDP_BSTRING::GetBstr(SdpPacketBstr);
|
|
}
|
|
|