quartz: Fix incorrect use of mtCurrent in transform filter.

dlls/quartz/acmwrapper.c

@@ -248,7 +248,9 @@ static HRESULT ACMWrapper_ConnectInput(TransformFilterImpl* pTransformFilter, co
         (IsEqualIID(&pmt->formattype, &FORMAT_WaveFormatEx)))
     {
         HACMSTREAM drv;
-        AM_MEDIA_TYPE* outpmt = &((OutputPin*)This->tf.ppPins[1])->pin.mtCurrent;
+        AM_MEDIA_TYPE* outpmt = &This->tf.pmt;
+        FreeMediaType(outpmt);
+
         This->pWfIn = (LPWAVEFORMATEX)pmt->pbFormat;
 
 	/* HACK */

dlls/quartz/avidec.c

@@ -213,11 +213,12 @@ static HRESULT AVIDec_ConnectInput(TransformFilterImpl* pTransformFilter, const
         This->hvid = ICLocate(pmt->majortype.Data1, pmt->subtype.Data1, bmi, NULL, ICMODE_DECOMPRESS);
         if (This->hvid)
         {
-            AM_MEDIA_TYPE* outpmt = &((OutputPin*)This->tf.ppPins[1])->pin.mtCurrent;
+            AM_MEDIA_TYPE* outpmt = &This->tf.pmt;
             const CLSID* outsubtype;
             DWORD bih_size;
             DWORD output_depth = bmi->biBitCount;
             DWORD result;
+            FreeMediaType(outpmt);
 
             switch(bmi->biBitCount)
             {

dlls/quartz/pin.c

@@ -928,7 +928,7 @@ HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDI
             /* negotiate media type */
 
             IEnumMediaTypes * pEnumCandidates;
-            AM_MEDIA_TYPE * pmtCandidate; /* Candidate media type */
+            AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 
             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
             {
@@ -937,6 +937,9 @@ HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDI
                 /* try this filter's media types first */
                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
                 {
+                    assert(pmtCandidate);
+                    if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype))
+                        assert(pmtCandidate->pbFormat);
                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) && 
                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
                     {
@@ -944,7 +947,8 @@ HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDI
                         CoTaskMemFree(pmtCandidate);
                         break;
                     }
-                    CoTaskMemFree(pmtCandidate);
+                    DeleteMediaType(pmtCandidate);
+                    pmtCandidate = NULL;
                 }
                 IEnumMediaTypes_Release(pEnumCandidates);
             }
@@ -956,6 +960,9 @@ HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDI
 
                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
                 {
+                    assert(pmtCandidate);
+                    if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype))
+                        assert(pmtCandidate->pbFormat);
                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) && 
                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
                     {
@@ -963,7 +970,8 @@ HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDI
                         CoTaskMemFree(pmtCandidate);
                         break;
                     }
-                    CoTaskMemFree(pmtCandidate);
+                    DeleteMediaType(pmtCandidate);
+                    pmtCandidate = NULL;
                 } /* while */
                 IEnumMediaTypes_Release(pEnumCandidates);
             } /* if not found */

dlls/quartz/transform.c

@@ -164,6 +164,7 @@ HRESULT TransformFilter_Create(TransformFilterImpl* pTransformFilter, const CLSI
     pTransformFilter->state = State_Stopped;
     pTransformFilter->pClock = NULL;
     ZeroMemory(&pTransformFilter->filterInfo, sizeof(FILTER_INFO));
+    ZeroMemory(&pTransformFilter->pmt, sizeof(pTransformFilter->pmt));
 
     pTransformFilter->ppPins = CoTaskMemAlloc(2 * sizeof(IPin *));
 
@@ -288,6 +289,7 @@ static ULONG WINAPI TransformFilter_Release(IBaseFilter * iface)
         DeleteCriticalSection(&This->csFilter);
 
         TRACE("Destroying transform filter\n");
+        FreeMediaType(&This->pmt);
         CoTaskMemFree(This);
 
         return 0;
@@ -603,12 +605,13 @@ static const IPinVtbl TransformFilter_InputPin_Vtbl =
 static HRESULT WINAPI TransformFilter_Output_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 {
     IPinImpl *This = (IPinImpl *)iface;
+    TransformFilterImpl *pTransform = (TransformFilterImpl *)This->pinInfo.pFilter;
     ENUMMEDIADETAILS emd;
 
     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 
     emd.cMediaTypes = 1;
-    emd.pMediaTypes = &This->mtCurrent;
+    emd.pMediaTypes = &pTransform->pmt;
 
     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 }

dlls/quartz/transform.h

@@ -45,6 +45,7 @@ struct TransformFilterImpl
     struct MediaSeekingImpl mediaSeeking;
 
     IPin ** ppPins;
+    AM_MEDIA_TYPE pmt;
 
     const TransformFuncsTable * pFuncsTable;
 };