* connectioncontainer.cpp: ActiveX control for VLC
*****************************************************************************
* Copyright (C) 2005 the VideoLAN team
+ * Copyright (C) 2010 M2X BV
*
* Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>
+ * Jean-Paul Saman <jpsaman@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "utils.h"
+#include <assert.h>
+#include <rpc.h>
+#include <rpcndr.h>
+
using namespace std;
+////////////////////////////////////////////////////////////////////////////////////////////////
+DEFINE_GUID(IID_IGlobalInterfaceTable, 0x00000146, 0x0000, 0x0000, 0xc0,0x00, 0x00,0x00,0x00,0x00,0x00,0x46);
+DEFINE_GUID(CLSID_StdGlobalInterfaceTable, 0x00000323, 0x0000, 0x0000, 0xc0,0x00, 0x00,0x00,0x00,0x00,0x00,0x46);
+
+const GUID IID_IGlobalInterfaceTable = { 0x00000146, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
+const CLSID CLSID_StdGlobalInterfaceTable = { 0x00000323, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
////////////////////////////////////////////////////////////////////////////////////////////////
/* this function object is used to return the value from a map pair */
{};
};
+////////////////////////////////////////////////////////////////////////////////////////////////
+// Condition variable emulation
+////////////////////////////////////////////////////////////////////////////////////////////////
+
+static void ConditionInit(HANDLE *handle)
+{
+ *handle = CreateEvent(NULL, TRUE, FALSE, NULL);
+ assert(*handle != NULL);
+}
+
+static void ConditionDestroy(HANDLE *handle)
+{
+ CloseHandle(*handle);
+}
+
+static void ConditionWait(HANDLE *handle, CRITICAL_SECTION *lock)
+{
+ DWORD dwWaitResult;
+
+ do {
+ LeaveCriticalSection(lock);
+ dwWaitResult = WaitForSingleObjectEx(*handle, INFINITE, TRUE);
+ EnterCriticalSection(lock);
+ } while(dwWaitResult == WAIT_IO_COMPLETION);
+
+ assert(dwWaitResult != WAIT_ABANDONED); /* another thread failed to cleanup! */
+ assert(dwWaitResult != WAIT_FAILED);
+ ResetEvent(*handle);
+}
+
+static void ConditionSignal(HANDLE *handle)
+{
+ SetEvent(*handle);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+// Event handling thread
+//
+// It bridges the gap between libvlc thread context and ActiveX/COM thread context.
+////////////////////////////////////////////////////////////////////////////////////////////////
+DWORD WINAPI ThreadProcEventHandler(LPVOID lpParam)
+{
+ CoInitialize(NULL);
+ VLCConnectionPointContainer *pCPC = (VLCConnectionPointContainer *)lpParam;
+
+ while(pCPC->isRunning)
+ {
+ EnterCriticalSection(&(pCPC->csEvents));
+ ConditionWait(&(pCPC->sEvents), &(pCPC->csEvents));
+
+ if (!pCPC->isRunning)
+ {
+ LeaveCriticalSection(&(pCPC->csEvents));
+ break;
+ }
+
+ while(!pCPC->_q_events.empty())
+ {
+ VLCDispatchEvent *ev = pCPC->_q_events.front();
+ pCPC->_q_events.pop();
+ pCPC->_p_events->fireEvent(ev->_dispId, &ev->_dispParams);
+ delete ev;
+ }
+ LeaveCriticalSection(&(pCPC->csEvents));
+ }
+
+ CoUninitialize();
+ return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+// VLCConnectionPoint
////////////////////////////////////////////////////////////////////////////////////////////////
+VLCConnectionPoint::VLCConnectionPoint(IConnectionPointContainer *p_cpc, REFIID iid) :
+ _iid(iid), _p_cpc(p_cpc)
+{
+ // Get the Global Interface Table per-process singleton:
+ CoCreateInstance(CLSID_StdGlobalInterfaceTable, 0,
+ CLSCTX_INPROC_SERVER,
+ IID_IGlobalInterfaceTable,
+ reinterpret_cast<void**>(&m_pGIT));
+};
+
+VLCConnectionPoint::~VLCConnectionPoint()
+{
+ // Revoke interfaces from the GIT:
+ map<DWORD,LPUNKNOWN>::iterator end = _connections.end();
+ map<DWORD,LPUNKNOWN>::iterator iter = _connections.begin();
+
+ while( iter != end )
+ {
+ m_pGIT->RevokeInterfaceFromGlobal((DWORD)iter->second);
+ ++iter;
+ }
+ m_pGIT->Release();
+};
+
STDMETHODIMP VLCConnectionPoint::GetConnectionInterface(IID *iid)
{
if( NULL == iid )
STDMETHODIMP VLCConnectionPoint::Advise(IUnknown *pUnk, DWORD *pdwCookie)
{
static DWORD dwCookieCounter = 0;
+ HRESULT hr;
if( (NULL == pUnk) || (NULL == pdwCookie) )
return E_POINTER;
- if( SUCCEEDED(pUnk->QueryInterface(_iid, (LPVOID *)&pUnk)) )
+ hr = pUnk->QueryInterface(_iid, (LPVOID *)&pUnk);
+ if( SUCCEEDED(hr) )
{
- *pdwCookie = ++dwCookieCounter;
- _connections[*pdwCookie] = pUnk;
- return S_OK;
+ DWORD dwGITCookie;
+ hr = m_pGIT->RegisterInterfaceInGlobal( pUnk, _iid, &dwGITCookie );
+ if( SUCCEEDED(hr) )
+ {
+ *pdwCookie = ++dwCookieCounter;
+ _connections[*pdwCookie] = (LPUNKNOWN) dwGITCookie;
+ }
+ pUnk->Release();
}
- return CONNECT_E_CANNOTCONNECT;
+ return hr;
};
STDMETHODIMP VLCConnectionPoint::Unadvise(DWORD pdwCookie)
map<DWORD,LPUNKNOWN>::iterator pcd = _connections.find((DWORD)pdwCookie);
if( pcd != _connections.end() )
{
- pcd->second->Release();
-
+ m_pGIT->RevokeInterfaceFromGlobal((DWORD)pcd->second);
_connections.erase(pdwCookie);
return S_OK;
}
map<DWORD,LPUNKNOWN>::iterator end = _connections.end();
map<DWORD,LPUNKNOWN>::iterator iter = _connections.begin();
+ HRESULT hr = S_OK;
+
while( iter != end )
{
- LPUNKNOWN pUnk = iter->second;
- if( NULL != pUnk )
+ DWORD dwCookie = (DWORD)iter->second;
+ LPUNKNOWN pUnk;
+
+ hr = m_pGIT->GetInterfaceFromGlobal( dwCookie, _iid,
+ reinterpret_cast<void **>(&pUnk) );
+ if( SUCCEEDED(hr) )
{
IDispatch *pDisp;
- if( SUCCEEDED(pUnk->QueryInterface(_iid, (LPVOID *)&pDisp)) )
+ hr = pUnk->QueryInterface(_iid, (LPVOID *)&pDisp);
+ if( SUCCEEDED(hr) )
{
- pDisp->Invoke(dispId, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, pDispParams, NULL, NULL, NULL);
+ pDisp->Invoke(dispId, IID_NULL, LOCALE_USER_DEFAULT,
+ DISPATCH_METHOD, pDispParams, NULL, NULL, NULL);
pDisp->Release();
}
+ pUnk->Release();
}
++iter;
}
while( iter != end )
{
- LPUNKNOWN pUnk = iter->second;
- if( NULL != pUnk )
+ LPUNKNOWN pUnk;
+ HRESULT hr;
+
+ hr = m_pGIT->GetInterfaceFromGlobal( (DWORD)iter->second, IID_IUnknown,
+ reinterpret_cast<void **>(&pUnk) );
+ if( SUCCEEDED(hr) )
{
IPropertyNotifySink *pPropSink;
- if( SUCCEEDED(pUnk->QueryInterface(IID_IPropertyNotifySink, (LPVOID *)&pPropSink)) )
+ hr = pUnk->QueryInterface( IID_IPropertyNotifySink, (LPVOID *)&pPropSink );
+ if( SUCCEEDED(hr) )
{
pPropSink->OnChanged(dispId);
pPropSink->Release();
}
+ pUnk->Release();
}
++iter;
}
//clear event arguments
if( NULL != _dispParams.rgvarg )
{
- for(unsigned int c=0; c<_dispParams.cArgs; ++c)
- VariantClear(_dispParams.rgvarg+c);
+ for(unsigned int c = 0; c < _dispParams.cArgs; ++c)
+ VariantClear(_dispParams.rgvarg + c);
CoTaskMemFree(_dispParams.rgvarg);
}
if( NULL != _dispParams.rgdispidNamedArgs )
CoTaskMemFree(_dispParams.rgdispidNamedArgs);
};
+////////////////////////////////////////////////////////////////////////////////////////////////
+// VLCConnectionPointContainer
////////////////////////////////////////////////////////////////////////////////////////////////
VLCConnectionPointContainer::VLCConnectionPointContainer(VLCPlugin *p_instance) :
- _p_instance(p_instance), _b_freeze(FALSE)
+ _p_instance(p_instance), freeze(FALSE), isRunning(TRUE)
{
_p_events = new VLCConnectionPoint(dynamic_cast<LPCONNECTIONPOINTCONTAINER>(this),
_p_instance->getDispEventID());
IID_IPropertyNotifySink);
_v_cps.push_back(dynamic_cast<LPCONNECTIONPOINT>(_p_props));
+
+ // init protection
+ InitializeCriticalSection(&csEvents);
+ ConditionInit(&sEvents);
+
+ // create thread
+ hThread = CreateThread(NULL, NULL, ThreadProcEventHandler,
+ dynamic_cast<LPVOID>(this), NULL, NULL);
};
VLCConnectionPointContainer::~VLCConnectionPointContainer()
{
+ EnterCriticalSection(&csEvents);
+ isRunning = FALSE;
+ ConditionSignal(&sEvents);
+ LeaveCriticalSection(&csEvents);
+
+ do {
+ /* nothing wait for thread to finish */;
+ } while(WaitForSingleObjectEx (hThread, INFINITE, TRUE) == WAIT_IO_COMPLETION);
+ CloseHandle(hThread);
+
+ ConditionDestroy(&sEvents);
+ DeleteCriticalSection(&csEvents);
+
delete _p_props;
delete _p_events;
};
return NOERROR;
};
-void VLCConnectionPointContainer::freezeEvents(BOOL freeze)
+void VLCConnectionPointContainer::freezeEvents(BOOL bFreeze)
{
- if( ! freeze )
- {
- // release queued events
- while( ! _q_events.empty() )
- {
- VLCDispatchEvent *ev = _q_events.front();
- _q_events.pop();
- _p_events->fireEvent(ev->_dispId, &ev->_dispParams);
- delete ev;
- }
- }
- _b_freeze = freeze;
+ EnterCriticalSection(&csEvents);
+ freeze = bFreeze;
+ LeaveCriticalSection(&csEvents);
};
void VLCConnectionPointContainer::fireEvent(DISPID dispId, DISPPARAMS* pDispParams)
{
- if( _b_freeze )
- {
- // queue event for later use when container is ready
- _q_events.push(new VLCDispatchEvent(dispId, *pDispParams));
- if( _q_events.size() > 10 )
- {
- // too many events in queue, get rid of older one
- delete _q_events.front();
- _q_events.pop();
- }
- }
- else
+ EnterCriticalSection(&csEvents);
+
+ // queue event for later use when container is ready
+ _q_events.push(new VLCDispatchEvent(dispId, *pDispParams));
+ if( _q_events.size() > 1024 )
{
- _p_events->fireEvent(dispId, pDispParams);
+ // too many events in queue, get rid of older one
+ delete _q_events.front();
+ _q_events.pop();
}
+ ConditionSignal(&sEvents);
+ LeaveCriticalSection(&csEvents);
};
void VLCConnectionPointContainer::firePropChangedEvent(DISPID dispId)
{
- if( ! _b_freeze )
+ if( ! freeze )
_p_props->firePropChangedEvent(dispId);
};
projects / vlc / commitdiff