| /* |
| * Generic Implementation of IPin Interface |
| * |
| * Copyright 2003 Robert Shearman |
| * Copyright 2010 Aric Stewart, CodeWeavers |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #define COBJMACROS |
| |
| #include "dshow.h" |
| #include "wine/debug.h" |
| #include "wine/unicode.h" |
| #include "wine/strmbase.h" |
| #include "uuids.h" |
| #include "vfwmsgs.h" |
| #include <assert.h> |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(strmbase); |
| |
| static const IPinVtbl InputPin_Vtbl; |
| static const IPinVtbl OutputPin_Vtbl; |
| static const IMemInputPinVtbl MemInputPin_Vtbl; |
| |
| typedef HRESULT (*SendPinFunc)( IPin *to, LPVOID arg ); |
| |
| /** Helper function, there are a lot of places where the error code is inherited |
| * The following rules apply: |
| * |
| * Return the first received error code (E_NOTIMPL is ignored) |
| * If no errors occur: return the first received non-error-code that isn't S_OK |
| */ |
| static HRESULT updatehres( HRESULT original, HRESULT new ) |
| { |
| if (FAILED( original ) || new == E_NOTIMPL) |
| return original; |
| |
| if (FAILED( new ) || original == S_OK) |
| return new; |
| |
| return original; |
| } |
| |
| /** Sends a message from a pin further to other, similar pins |
| * fnMiddle is called on each pin found further on the stream. |
| * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source) |
| * |
| * If the pin given is an input pin, the message will be sent downstream to other input pins |
| * If the pin given is an output pin, the message will be sent upstream to other output pins |
| */ |
| static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd ) |
| { |
| PIN_INFO pin_info; |
| ULONG amount = 0; |
| HRESULT hr = S_OK; |
| HRESULT hr_return = S_OK; |
| IEnumPins *enumpins = NULL; |
| BOOL foundend = TRUE; |
| PIN_DIRECTION from_dir; |
| |
| IPin_QueryDirection( from, &from_dir ); |
| |
| hr = IPin_QueryInternalConnections( from, NULL, &amount ); |
| if (hr != E_NOTIMPL && amount) |
| FIXME("Use QueryInternalConnections!\n"); |
| hr = S_OK; |
| |
| pin_info.pFilter = NULL; |
| hr = IPin_QueryPinInfo( from, &pin_info ); |
| if (FAILED(hr)) |
| goto out; |
| |
| hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins ); |
| if (FAILED(hr)) |
| goto out; |
| |
| hr = IEnumPins_Reset( enumpins ); |
| while (hr == S_OK) { |
| IPin *pin = NULL; |
| hr = IEnumPins_Next( enumpins, 1, &pin, NULL ); |
| if (hr == VFW_E_ENUM_OUT_OF_SYNC) |
| { |
| hr = IEnumPins_Reset( enumpins ); |
| continue; |
| } |
| if (pin) |
| { |
| PIN_DIRECTION dir; |
| |
| IPin_QueryDirection( pin, &dir ); |
| if (dir != from_dir) |
| { |
| IPin *connected = NULL; |
| |
| foundend = FALSE; |
| IPin_ConnectedTo( pin, &connected ); |
| if (connected) |
| { |
| HRESULT hr_local; |
| |
| hr_local = fnMiddle( connected, arg ); |
| hr_return = updatehres( hr_return, hr_local ); |
| IPin_Release(connected); |
| } |
| } |
| IPin_Release( pin ); |
| } |
| else |
| { |
| hr = S_OK; |
| break; |
| } |
| } |
| |
| if (!foundend) |
| hr = hr_return; |
| else if (fnEnd) { |
| HRESULT hr_local; |
| |
| hr_local = fnEnd( from, arg ); |
| hr_return = updatehres( hr_return, hr_local ); |
| } |
| |
| out: |
| if (pin_info.pFilter) |
| IBaseFilter_Release( pin_info.pFilter ); |
| return hr; |
| } |
| |
| static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc) |
| { |
| /* Tempting to just do a memcpy, but the name field is |
| 128 characters long! We will probably never exceed 10 |
| most of the time, so we are better off copying |
| each field manually */ |
| strcpyW(pDest->achName, pSrc->achName); |
| pDest->dir = pSrc->dir; |
| pDest->pFilter = pSrc->pFilter; |
| } |
| |
| static void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt) |
| { |
| if (!pmt) |
| return; |
| TRACE("\t%s\n\t%s\n\t...\n\t%s\n", debugstr_guid(&pmt->majortype), debugstr_guid(&pmt->subtype), debugstr_guid(&pmt->formattype)); |
| } |
| |
| static BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards) |
| { |
| TRACE("pmt1: "); |
| dump_AM_MEDIA_TYPE(pmt1); |
| TRACE("pmt2: "); |
| dump_AM_MEDIA_TYPE(pmt2); |
| return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) && |
| ((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL) || IsEqualGUID(&pmt2->subtype, &GUID_NULL))) || IsEqualGUID(&pmt1->subtype, &pmt2->subtype))); |
| } |
| |
| /*** Common Base Pin function */ |
| HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt) |
| { |
| if (iPosition < 0) |
| return E_INVALIDARG; |
| return VFW_S_NO_MORE_ITEMS; |
| } |
| |
| LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *iface) |
| { |
| return 1; |
| } |
| |
| ULONG WINAPI BasePinImpl_AddRef(IPin * iface) |
| { |
| BasePin *This = (BasePin *)iface; |
| ULONG refCount = InterlockedIncrement(&This->refCount); |
| |
| TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1); |
| |
| return refCount; |
| } |
| |
| HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface) |
| { |
| HRESULT hr; |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("()\n"); |
| |
| EnterCriticalSection(This->pCritSec); |
| { |
| if (This->pConnectedTo) |
| { |
| IPin_Release(This->pConnectedTo); |
| This->pConnectedTo = NULL; |
| FreeMediaType(&This->mtCurrent); |
| ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent)); |
| hr = S_OK; |
| } |
| else |
| hr = S_FALSE; |
| } |
| LeaveCriticalSection(This->pCritSec); |
| |
| return hr; |
| } |
| |
| HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin) |
| { |
| HRESULT hr; |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p)\n", ppPin); |
| |
| EnterCriticalSection(This->pCritSec); |
| { |
| if (This->pConnectedTo) |
| { |
| *ppPin = This->pConnectedTo; |
| IPin_AddRef(*ppPin); |
| hr = S_OK; |
| } |
| else |
| { |
| hr = VFW_E_NOT_CONNECTED; |
| *ppPin = NULL; |
| } |
| } |
| LeaveCriticalSection(This->pCritSec); |
| |
| return hr; |
| } |
| |
| HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt) |
| { |
| HRESULT hr; |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, pmt); |
| |
| EnterCriticalSection(This->pCritSec); |
| { |
| if (This->pConnectedTo) |
| { |
| CopyMediaType(pmt, &This->mtCurrent); |
| hr = S_OK; |
| } |
| else |
| { |
| ZeroMemory(pmt, sizeof(*pmt)); |
| hr = VFW_E_NOT_CONNECTED; |
| } |
| } |
| LeaveCriticalSection(This->pCritSec); |
| |
| return hr; |
| } |
| |
| HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo) |
| { |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, pInfo); |
| |
| Copy_PinInfo(pInfo, &This->pinInfo); |
| IBaseFilter_AddRef(pInfo->pFilter); |
| |
| return S_OK; |
| } |
| |
| HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir) |
| { |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir); |
| |
| *pPinDir = This->pinInfo.dir; |
| |
| return S_OK; |
| } |
| |
| HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id) |
| { |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, Id); |
| |
| *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR)); |
| if (!*Id) |
| return E_OUTOFMEMORY; |
| |
| strcpyW(*Id, This->pinInfo.achName); |
| |
| return S_OK; |
| } |
| |
| HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt) |
| { |
| TRACE("(%p)->(%p)\n", iface, pmt); |
| |
| return S_OK; |
| } |
| |
| HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum) |
| { |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum); |
| |
| /* override this method to allow enumeration of your types */ |
| |
| return EnumMediaTypes_Construct(This, This->pFuncsTable->pfnGetMediaType, This->pFuncsTable->pfnGetMediaTypeVersion , ppEnum); |
| } |
| |
| HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin) |
| { |
| BasePin *This = (BasePin *)iface; |
| |
| TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin); |
| |
| return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */ |
| } |
| |
| /*** OutputPin implementation ***/ |
| |
| HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv) |
| { |
| BaseOutputPin *This = (BaseOutputPin *)iface; |
| |
| TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv); |
| |
| *ppv = NULL; |
| |
| if (IsEqualIID(riid, &IID_IUnknown)) |
| *ppv = iface; |
| else if (IsEqualIID(riid, &IID_IPin)) |
| *ppv = iface; |
| else if (IsEqualIID(riid, &IID_IMediaSeeking)) |
| { |
| return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv); |
| } |
| |
| if (*ppv) |
| { |
| IUnknown_AddRef((IUnknown *)(*ppv)); |
| return S_OK; |
| } |
| |
| FIXME("No interface for %s!\n", debugstr_guid(riid)); |
| |
| return E_NOINTERFACE; |
| } |
| |
| ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface) |
| { |
| BaseOutputPin *This = (BaseOutputPin *)iface; |
| ULONG refCount = InterlockedDecrement(&This->pin.refCount); |
| |
| TRACE("(%p)->() Release from %d\n", iface, refCount + 1); |
| |
| if (!refCount) |
| { |
| FreeMediaType(&This->pin.mtCurrent); |
| CoTaskMemFree(This); |
| return 0; |
| } |
| return refCount; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt) |
| { |
| HRESULT hr; |
| BaseOutputPin *This = (BaseOutputPin *)iface; |
| |
| TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt); |
| dump_AM_MEDIA_TYPE(pmt); |
| |
| /* If we try to connect to ourself, we will definitely deadlock. |
| * There are other cases where we could deadlock too, but this |
| * catches the obvious case */ |
| assert(pReceivePin != iface); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| /* if we have been a specific type to connect with, then we can either connect |
| * with that or fail. We cannot choose different AM_MEDIA_TYPE */ |
| if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL)) |
| hr = This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmt); |
| else |
| { |
| /* negotiate media type */ |
| |
| IEnumMediaTypes * pEnumCandidates; |
| AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */ |
| |
| if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates))) |
| { |
| hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */ |
| |
| /* try this filter's media types first */ |
| while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL)) |
| { |
| assert(pmtCandidate); |
| dump_AM_MEDIA_TYPE(pmtCandidate); |
| if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype) |
| && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype)) |
| assert(pmtCandidate->pbFormat); |
| if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) && |
| (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK)) |
| { |
| hr = S_OK; |
| DeleteMediaType(pmtCandidate); |
| break; |
| } |
| DeleteMediaType(pmtCandidate); |
| pmtCandidate = NULL; |
| } |
| IEnumMediaTypes_Release(pEnumCandidates); |
| } |
| |
| /* then try receiver filter's media types */ |
| if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */ |
| { |
| hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */ |
| |
| while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL)) |
| { |
| assert(pmtCandidate); |
| dump_AM_MEDIA_TYPE(pmtCandidate); |
| if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) && |
| (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK)) |
| { |
| hr = S_OK; |
| DeleteMediaType(pmtCandidate); |
| break; |
| } |
| DeleteMediaType(pmtCandidate); |
| pmtCandidate = NULL; |
| } /* while */ |
| IEnumMediaTypes_Release(pEnumCandidates); |
| } /* if not found */ |
| } /* if negotiate media type */ |
| } /* if succeeded */ |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| TRACE(" -- %x\n", hr); |
| return hr; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt) |
| { |
| ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt); |
| |
| return E_UNEXPECTED; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface) |
| { |
| HRESULT hr; |
| BaseOutputPin *This = (BaseOutputPin *)iface; |
| |
| TRACE("()\n"); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (This->pMemInputPin) |
| { |
| IMemInputPin_Release(This->pMemInputPin); |
| This->pMemInputPin = NULL; |
| } |
| if (This->pin.pConnectedTo) |
| { |
| IPin_Release(This->pin.pConnectedTo); |
| This->pin.pConnectedTo = NULL; |
| FreeMediaType(&This->pin.mtCurrent); |
| ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent)); |
| hr = S_OK; |
| } |
| else |
| hr = S_FALSE; |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface) |
| { |
| TRACE("()\n"); |
| |
| /* not supposed to do anything in an output pin */ |
| |
| return E_UNEXPECTED; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface) |
| { |
| TRACE("(%p)->()\n", iface); |
| |
| /* not supposed to do anything in an output pin */ |
| |
| return E_UNEXPECTED; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface) |
| { |
| TRACE("(%p)->()\n", iface); |
| |
| /* not supposed to do anything in an output pin */ |
| |
| return E_UNEXPECTED; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate) |
| { |
| TRACE("(%p)->(%x%08x, %x%08x, %e)\n", iface, (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate); |
| |
| /* not supposed to do anything in an output pin */ |
| |
| return E_UNEXPECTED; |
| } |
| |
| static const IPinVtbl OutputPin_Vtbl = |
| { |
| BaseOutputPinImpl_QueryInterface, |
| BasePinImpl_AddRef, |
| BaseOutputPinImpl_Release, |
| BaseOutputPinImpl_Connect, |
| BaseOutputPinImpl_ReceiveConnection, |
| BaseOutputPinImpl_Disconnect, |
| BasePinImpl_ConnectedTo, |
| BasePinImpl_ConnectionMediaType, |
| BasePinImpl_QueryPinInfo, |
| BasePinImpl_QueryDirection, |
| BasePinImpl_QueryId, |
| BasePinImpl_QueryAccept, |
| BasePinImpl_EnumMediaTypes, |
| BasePinImpl_QueryInternalConnections, |
| BaseOutputPinImpl_EndOfStream, |
| BaseOutputPinImpl_BeginFlush, |
| BaseOutputPinImpl_EndFlush, |
| BaseOutputPinImpl_NewSegment |
| }; |
| |
| HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags) |
| { |
| HRESULT hr; |
| |
| TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (!This->pin.pConnectedTo) |
| hr = VFW_E_NOT_CONNECTED; |
| else |
| { |
| IMemAllocator * pAlloc = NULL; |
| |
| hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| hr = IMemAllocator_GetBuffer(pAlloc, ppSample, tStart, tStop, dwFlags); |
| |
| if (SUCCEEDED(hr)) |
| hr = IMediaSample_SetTime(*ppSample, tStart, tStop); |
| |
| if (pAlloc) |
| IMemAllocator_Release(pAlloc); |
| } |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| /* replaces OutputPin_SendSample */ |
| HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample) |
| { |
| HRESULT hr = S_OK; |
| IMemInputPin * pMemConnected = NULL; |
| PIN_INFO pinInfo; |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (!This->pin.pConnectedTo || !This->pMemInputPin) |
| hr = VFW_E_NOT_CONNECTED; |
| else |
| { |
| /* we don't have the lock held when using This->pMemInputPin, |
| * so we need to AddRef it to stop it being deleted while we are |
| * using it. Same with its filter. */ |
| pMemConnected = This->pMemInputPin; |
| IMemInputPin_AddRef(pMemConnected); |
| hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo); |
| } |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| if (SUCCEEDED(hr)) |
| { |
| /* NOTE: if we are in a critical section when Receive is called |
| * then it causes some problems (most notably with the native Video |
| * Renderer) if we are re-entered for whatever reason */ |
| hr = IMemInputPin_Receive(pMemConnected, pSample); |
| |
| /* If the filter's destroyed, tell upstream to stop sending data */ |
| if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr)) |
| hr = S_FALSE; |
| } |
| if (pMemConnected) |
| IMemInputPin_Release(pMemConnected); |
| |
| return hr; |
| } |
| |
| /* replaces OutputPin_CommitAllocator */ |
| HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This) |
| { |
| HRESULT hr = S_OK; |
| |
| TRACE("(%p)->()\n", This); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (!This->pin.pConnectedTo || !This->pMemInputPin) |
| hr = VFW_E_NOT_CONNECTED; |
| else |
| { |
| IMemAllocator * pAlloc = NULL; |
| |
| hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| hr = IMemAllocator_Commit(pAlloc); |
| |
| if (pAlloc) |
| IMemAllocator_Release(pAlloc); |
| } |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| TRACE("--> %08x\n", hr); |
| return hr; |
| } |
| |
| /* replaces OutputPin_DecommitAllocator */ |
| HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This) |
| { |
| HRESULT hr = S_OK; |
| |
| TRACE("(%p)->()\n", This); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (!This->pin.pConnectedTo || !This->pMemInputPin) |
| hr = VFW_E_NOT_CONNECTED; |
| else |
| { |
| IMemAllocator * pAlloc = NULL; |
| |
| hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| hr = IMemAllocator_Decommit(pAlloc); |
| |
| if (pAlloc) |
| IMemAllocator_Release(pAlloc); |
| } |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| TRACE("--> %08x\n", hr); |
| return hr; |
| } |
| |
| /* replaces OutputPin_DeliverDisconnect */ |
| HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This) |
| { |
| HRESULT hr; |
| |
| TRACE("(%p)->()\n", This); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (!This->pin.pConnectedTo || !This->pMemInputPin) |
| hr = VFW_E_NOT_CONNECTED; |
| else |
| { |
| IMemAllocator * pAlloc = NULL; |
| |
| hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| hr = IMemAllocator_Decommit(pAlloc); |
| |
| if (pAlloc) |
| IMemAllocator_Release(pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| hr = IPin_Disconnect(This->pin.pConnectedTo); |
| } |
| IPin_Disconnect((IPin *)This); |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc) |
| { |
| return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc); |
| } |
| |
| HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc) |
| { |
| HRESULT hr; |
| |
| hr = IMemInputPin_GetAllocator(pPin, pAlloc); |
| |
| if (hr == VFW_E_NO_ALLOCATOR) |
| /* Input pin provides no allocator, use standard memory allocator */ |
| hr = BaseOutputPinImpl_InitAllocator(This, pAlloc); |
| |
| if (SUCCEEDED(hr)) |
| { |
| ALLOCATOR_PROPERTIES rProps; |
| ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES)); |
| |
| IMemInputPin_GetAllocatorRequirements(pPin, &rProps); |
| hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps); |
| } |
| |
| if (SUCCEEDED(hr)) |
| hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE); |
| |
| return hr; |
| } |
| |
| /*** The Construct functions ***/ |
| |
| /* Function called as a helper to IPin_Connect */ |
| /* specific AM_MEDIA_TYPE - it cannot be NULL */ |
| HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt) |
| { |
| BaseOutputPin *This = (BaseOutputPin *)iface; |
| HRESULT hr; |
| IMemAllocator * pMemAlloc = NULL; |
| |
| TRACE("(%p, %p)\n", pReceivePin, pmt); |
| dump_AM_MEDIA_TYPE(pmt); |
| |
| /* FIXME: call queryacceptproc */ |
| |
| This->pin.pConnectedTo = pReceivePin; |
| IPin_AddRef(pReceivePin); |
| CopyMediaType(&This->pin.mtCurrent, pmt); |
| |
| hr = IPin_ReceiveConnection(pReceivePin, (IPin*)iface, pmt); |
| |
| /* get the IMemInputPin interface we will use to deliver samples to the |
| * connected pin */ |
| if (SUCCEEDED(hr)) |
| { |
| This->pMemInputPin = NULL; |
| hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin); |
| |
| if (SUCCEEDED(hr)) |
| { |
| hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc); |
| if (pMemAlloc) |
| IMemAllocator_Release(pMemAlloc); |
| } |
| |
| /* break connection if we couldn't get the allocator */ |
| if (FAILED(hr)) |
| { |
| if (This->pMemInputPin) |
| IMemInputPin_Release(This->pMemInputPin); |
| This->pMemInputPin = NULL; |
| |
| IPin_Disconnect(pReceivePin); |
| } |
| } |
| |
| if (FAILED(hr)) |
| { |
| IPin_Release(This->pin.pConnectedTo); |
| This->pin.pConnectedTo = NULL; |
| FreeMediaType(&This->pin.mtCurrent); |
| } |
| |
| TRACE(" -- %x\n", hr); |
| return hr; |
| } |
| |
| static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable, LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl) |
| { |
| TRACE("\n"); |
| |
| /* Common attributes */ |
| pPinImpl->pin.lpVtbl = OutputPin_Vtbl; |
| pPinImpl->pin.refCount = 1; |
| pPinImpl->pin.pConnectedTo = NULL; |
| pPinImpl->pin.pCritSec = pCritSec; |
| Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo); |
| pPinImpl->pin.pFuncsTable = pBaseFuncsTable; |
| ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE)); |
| |
| /* Output pin attributes */ |
| pPinImpl->pMemInputPin = NULL; |
| pPinImpl->pFuncsTable = pBaseOutputFuncsTable; |
| |
| return S_OK; |
| } |
| |
| HRESULT WINAPI BaseOutputPin_Construct(const IPinVtbl *OutputPin_Vtbl, LONG outputpin_size, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable, LPCRITICAL_SECTION pCritSec, IPin ** ppPin) |
| { |
| BaseOutputPin * pPinImpl; |
| |
| *ppPin = NULL; |
| |
| if (pPinInfo->dir != PINDIR_OUTPUT) |
| { |
| ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir); |
| return E_INVALIDARG; |
| } |
| |
| assert(outputpin_size >= sizeof(BaseOutputPin)); |
| assert(pBaseFuncsTable->pfnAttemptConnection); |
| |
| pPinImpl = CoTaskMemAlloc(outputpin_size); |
| |
| if (!pPinImpl) |
| return E_OUTOFMEMORY; |
| |
| if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl))) |
| { |
| *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl); |
| return S_OK; |
| } |
| |
| CoTaskMemFree(pPinImpl); |
| return E_FAIL; |
| } |
| |
| /*** Input Pin implementation ***/ |
| |
| HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| |
| TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv); |
| |
| *ppv = NULL; |
| |
| if (IsEqualIID(riid, &IID_IUnknown)) |
| *ppv = iface; |
| else if (IsEqualIID(riid, &IID_IPin)) |
| *ppv = iface; |
| else if (IsEqualIID(riid, &IID_IMemInputPin)) |
| *ppv = &This->lpVtblMemInput; |
| else if (IsEqualIID(riid, &IID_IMediaSeeking)) |
| { |
| return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv); |
| } |
| |
| if (*ppv) |
| { |
| IUnknown_AddRef((IUnknown *)(*ppv)); |
| return S_OK; |
| } |
| |
| FIXME("No interface for %s!\n", debugstr_guid(riid)); |
| |
| return E_NOINTERFACE; |
| } |
| |
| ULONG WINAPI BaseInputPinImpl_Release(IPin * iface) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| ULONG refCount = InterlockedDecrement(&This->pin.refCount); |
| |
| TRACE("(%p)->() Release from %d\n", iface, refCount + 1); |
| |
| if (!refCount) |
| { |
| FreeMediaType(&This->pin.mtCurrent); |
| if (This->pAllocator) |
| IMemAllocator_Release(This->pAllocator); |
| This->pAllocator = NULL; |
| This->pin.lpVtbl = NULL; |
| CoTaskMemFree(This); |
| return 0; |
| } |
| else |
| return refCount; |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt) |
| { |
| ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt); |
| |
| return E_UNEXPECTED; |
| } |
| |
| |
| HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| PIN_DIRECTION pindirReceive; |
| HRESULT hr = S_OK; |
| |
| TRACE("(%p, %p)\n", pReceivePin, pmt); |
| dump_AM_MEDIA_TYPE(pmt); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| { |
| if (This->pin.pConnectedTo) |
| hr = VFW_E_ALREADY_CONNECTED; |
| |
| if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) != S_OK) |
| hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto |
| * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */ |
| |
| if (SUCCEEDED(hr)) |
| { |
| IPin_QueryDirection(pReceivePin, &pindirReceive); |
| |
| if (pindirReceive != PINDIR_OUTPUT) |
| { |
| ERR("Can't connect from non-output pin\n"); |
| hr = VFW_E_INVALID_DIRECTION; |
| } |
| } |
| |
| if (SUCCEEDED(hr)) |
| { |
| CopyMediaType(&This->pin.mtCurrent, pmt); |
| This->pin.pConnectedTo = pReceivePin; |
| IPin_AddRef(pReceivePin); |
| } |
| } |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| static HRESULT deliver_endofstream(IPin* pin, LPVOID unused) |
| { |
| return IPin_EndOfStream( pin ); |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, pmt); |
| |
| return (This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) == S_OK ? S_OK : S_FALSE); |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface) |
| { |
| HRESULT hr = S_OK; |
| BaseInputPin *This = (BaseInputPin *)iface; |
| |
| TRACE("(%p)\n", This); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| if (This->flushing) |
| hr = S_FALSE; |
| else |
| This->end_of_stream = 1; |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| if (hr == S_OK) |
| hr = SendFurther( iface, deliver_endofstream, NULL, NULL ); |
| return hr; |
| } |
| |
| static HRESULT deliver_beginflush(IPin* pin, LPVOID unused) |
| { |
| return IPin_BeginFlush( pin ); |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| HRESULT hr; |
| TRACE("() semi-stub\n"); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| This->flushing = 1; |
| |
| hr = SendFurther( iface, deliver_beginflush, NULL, NULL ); |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| static HRESULT deliver_endflush(IPin* pin, LPVOID unused) |
| { |
| return IPin_EndFlush( pin ); |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| HRESULT hr; |
| TRACE("(%p)\n", This); |
| |
| EnterCriticalSection(This->pin.pCritSec); |
| This->flushing = This->end_of_stream = 0; |
| |
| hr = SendFurther( iface, deliver_endflush, NULL, NULL ); |
| LeaveCriticalSection(This->pin.pCritSec); |
| |
| return hr; |
| } |
| |
| typedef struct newsegmentargs |
| { |
| REFERENCE_TIME tStart, tStop; |
| double rate; |
| } newsegmentargs; |
| |
| static HRESULT deliver_newsegment(IPin *pin, LPVOID data) |
| { |
| newsegmentargs *args = data; |
| return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate); |
| } |
| |
| HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate) |
| { |
| BaseInputPin *This = (BaseInputPin *)iface; |
| newsegmentargs args; |
| |
| TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate); |
| |
| args.tStart = This->tStart = tStart; |
| args.tStop = This->tStop = tStop; |
| args.rate = This->dRate = dRate; |
| |
| return SendFurther( iface, deliver_newsegment, &args, NULL ); |
| } |
| |
| static const IPinVtbl InputPin_Vtbl = |
| { |
| BaseInputPinImpl_QueryInterface, |
| BasePinImpl_AddRef, |
| BaseInputPinImpl_Release, |
| BaseInputPinImpl_Connect, |
| BaseInputPinImpl_ReceiveConnection, |
| BasePinImpl_Disconnect, |
| BasePinImpl_ConnectedTo, |
| BasePinImpl_ConnectionMediaType, |
| BasePinImpl_QueryPinInfo, |
| BasePinImpl_QueryDirection, |
| BasePinImpl_QueryId, |
| BaseInputPinImpl_QueryAccept, |
| BasePinImpl_EnumMediaTypes, |
| BasePinImpl_QueryInternalConnections, |
| BaseInputPinImpl_EndOfStream, |
| BaseInputPinImpl_BeginFlush, |
| BaseInputPinImpl_EndFlush, |
| BaseInputPinImpl_NewSegment |
| }; |
| |
| /*** IMemInputPin implementation ***/ |
| |
| static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface ) |
| { |
| return (BaseInputPin *)((char*)iface - FIELD_OFFSET(BaseInputPin, lpVtblMemInput)); |
| } |
| |
| static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| return IPin_QueryInterface((IPin *)&This->pin, riid, ppv); |
| } |
| |
| static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| return IPin_AddRef((IPin *)&This->pin); |
| } |
| |
| static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| return IPin_Release((IPin *)&This->pin); |
| } |
| |
| static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator); |
| |
| *ppAllocator = This->pAllocator; |
| if (*ppAllocator) |
| IMemAllocator_AddRef(*ppAllocator); |
| |
| return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR; |
| } |
| |
| static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly); |
| |
| if (bReadOnly) |
| FIXME("Read only flag not handled yet!\n"); |
| |
| /* FIXME: Should we release the allocator on disconnection? */ |
| if (!pAllocator) |
| { |
| WARN("Null allocator\n"); |
| return E_POINTER; |
| } |
| |
| if (This->preferred_allocator && pAllocator != This->preferred_allocator) |
| return E_FAIL; |
| |
| if (This->pAllocator) |
| IMemAllocator_Release(This->pAllocator); |
| This->pAllocator = pAllocator; |
| if (This->pAllocator) |
| IMemAllocator_AddRef(This->pAllocator); |
| |
| return S_OK; |
| } |
| |
| static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| TRACE("(%p/%p)->(%p)\n", This, iface, pProps); |
| |
| /* override this method if you have any specific requirements */ |
| |
| return E_NOTIMPL; |
| } |
| |
| static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| HRESULT hr = S_FALSE; |
| |
| /* this trace commented out for performance reasons */ |
| /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/ |
| if (This->pFuncsTable->pfnReceive) |
| hr = This->pFuncsTable->pfnReceive(This, pSample); |
| return hr; |
| } |
| |
| static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed) |
| { |
| HRESULT hr = S_OK; |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed); |
| |
| for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++) |
| { |
| hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]); |
| if (hr != S_OK) |
| break; |
| } |
| |
| return hr; |
| } |
| |
| static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface) |
| { |
| BaseInputPin *This = impl_from_IMemInputPin(iface); |
| |
| TRACE("(%p/%p)->()\n", This, iface); |
| |
| return S_OK; |
| } |
| |
| static const IMemInputPinVtbl MemInputPin_Vtbl = |
| { |
| MemInputPin_QueryInterface, |
| MemInputPin_AddRef, |
| MemInputPin_Release, |
| MemInputPin_GetAllocator, |
| MemInputPin_NotifyAllocator, |
| MemInputPin_GetAllocatorRequirements, |
| MemInputPin_Receive, |
| MemInputPin_ReceiveMultiple, |
| MemInputPin_ReceiveCanBlock |
| }; |
| |
| static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo, |
| const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable, |
| LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl) |
| { |
| TRACE("\n"); |
| |
| /* Common attributes */ |
| pPinImpl->pin.refCount = 1; |
| pPinImpl->pin.pConnectedTo = NULL; |
| pPinImpl->pin.pCritSec = pCritSec; |
| Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo); |
| ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE)); |
| pPinImpl->pin.pFuncsTable = pBaseFuncsTable; |
| |
| /* Input pin attributes */ |
| pPinImpl->pFuncsTable = pBaseInputFuncsTable; |
| pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator; |
| if (pPinImpl->preferred_allocator) |
| IMemAllocator_AddRef(pPinImpl->preferred_allocator); |
| pPinImpl->tStart = 0; |
| pPinImpl->tStop = 0; |
| pPinImpl->dRate = 1.0; |
| pPinImpl->pin.lpVtbl = InputPin_Vtbl; |
| pPinImpl->lpVtblMemInput = &MemInputPin_Vtbl; |
| pPinImpl->flushing = pPinImpl->end_of_stream = 0; |
| |
| return S_OK; |
| } |
| |
| HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo, |
| const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable, |
| LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin) |
| { |
| BaseInputPin * pPinImpl; |
| |
| *ppPin = NULL; |
| |
| assert(pBaseFuncsTable->pfnCheckMediaType); |
| |
| if (pPinInfo->dir != PINDIR_INPUT) |
| { |
| ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir); |
| return E_INVALIDARG; |
| } |
| |
| pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl)); |
| |
| if (!pPinImpl) |
| return E_OUTOFMEMORY; |
| |
| if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl))) |
| { |
| *ppPin = (IPin *)pPinImpl; |
| return S_OK; |
| } |
| |
| CoTaskMemFree(pPinImpl); |
| return E_FAIL; |
| } |
