text: /*
   * Filter Seeking and Control Interfaces
   *
   * Copyright 2003 Robert Shearman
   * Copyright 2012 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
   */
  /* FIXME: critical sections */
  
  #define COBJMACROS
  
  #include "dshow.h"
  #include "uuids.h"
  
  #include "wine/debug.h"
  #include "wine/strmbase.h"
  
  #include <assert.h>
  
  WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
  
  static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl;
  static const IMediaPositionVtbl IMediaPositionPassThru_Vtbl;
  
  typedef struct PassThruImpl {
      IUnknown  IUnknown_inner;
      ISeekingPassThru ISeekingPassThru_iface;
      IMediaSeeking IMediaSeeking_iface;
      IMediaPosition IMediaPosition_iface;
      BaseDispatch baseDispatch;
  
      LONG ref;
      IUnknown * outer_unk;
      IPin * pin;
      BOOL bUnkOuterValid;
      BOOL bAggregatable;
      BOOL renderer;
      CRITICAL_SECTION time_cs;
      BOOL timevalid;
      REFERENCE_TIME time_earliest;
  } PassThruImpl;
  
  static inline PassThruImpl *impl_from_IUnknown_inner(IUnknown *iface)
  {
      return CONTAINING_RECORD(iface, PassThruImpl, IUnknown_inner);
  }
  
  static inline PassThruImpl *impl_from_ISeekingPassThru(ISeekingPassThru *iface)
  {
      return CONTAINING_RECORD(iface, PassThruImpl, ISeekingPassThru_iface);
  }
  
  static inline PassThruImpl *impl_from_IMediaSeeking(IMediaSeeking *iface)
  {
      return CONTAINING_RECORD(iface, PassThruImpl, IMediaSeeking_iface);
  }
  
  static inline PassThruImpl *impl_from_IMediaPosition(IMediaPosition *iface)
  {
      return CONTAINING_RECORD(iface, PassThruImpl, IMediaPosition_iface);
  }
  
  static HRESULT WINAPI SeekInner_QueryInterface(IUnknown * iface,
  					  REFIID riid,
  					  LPVOID *ppvObj) {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      TRACE("(%p)->(%s (%p), %p)\n", This, debugstr_guid(riid), riid, ppvObj);
  
      if (This->bAggregatable)
          This->bUnkOuterValid = TRUE;
  
      if (IsEqualGUID(&IID_IUnknown, riid))
      {
          *ppvObj = &(This->IUnknown_inner);
          TRACE("   returning IUnknown interface (%p)\n", *ppvObj);
      } else if (IsEqualGUID(&IID_ISeekingPassThru, riid)) {
          *ppvObj = &(This->ISeekingPassThru_iface);
          TRACE("   returning ISeekingPassThru interface (%p)\n", *ppvObj);
      } else if (IsEqualGUID(&IID_IMediaSeeking, riid)) {
          *ppvObj = &(This->IMediaSeeking_iface);
          TRACE("   returning IMediaSeeking interface (%p)\n", *ppvObj);
      } else if (IsEqualGUID(&IID_IMediaPosition, riid)) {
          *ppvObj = &(This->IMediaPosition_iface);
          TRACE("   returning IMediaPosition interface (%p)\n", *ppvObj);
      } else {
          *ppvObj = NULL;
          FIXME("unknown interface %s\n", debugstr_guid(riid));
          return E_NOINTERFACE;
      }
  
      IUnknown_AddRef((IUnknown *)(*ppvObj));
      return S_OK;
  }
  
  static ULONG WINAPI SeekInner_AddRef(IUnknown * iface) {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      ULONG ref = InterlockedIncrement(&This->ref);
  
      TRACE("(%p)->(): new ref = %d\n", This, ref);
  
      return ref;
  }
  
  static ULONG WINAPI SeekInner_Release(IUnknown * iface) {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      ULONG ref = InterlockedDecrement(&This->ref);
  
      TRACE("(%p)->(): new ref = %d\n", This, ref);
  
      if (ref == 0)
      {
          BaseDispatch_Destroy(&This->baseDispatch);
          This->time_cs.DebugInfo->Spare[0] = 0;
          DeleteCriticalSection(&This->time_cs);
          CoTaskMemFree(This);
      }
      return ref;
  }
  
  static const IUnknownVtbl IInner_VTable =
  {
      SeekInner_QueryInterface,
      SeekInner_AddRef,
      SeekInner_Release
  };
  
  /* Generic functions for aggregation */
  static HRESULT SeekOuter_QueryInterface(PassThruImpl *This, REFIID riid, LPVOID *ppv)
  {
      if (This->bAggregatable)
          This->bUnkOuterValid = TRUE;
  
      if (This->outer_unk)
      {
          if (This->bAggregatable)
              return IUnknown_QueryInterface(This->outer_unk, riid, ppv);
  
          if (IsEqualIID(riid, &IID_IUnknown))
          {
              HRESULT hr;
  
              IUnknown_AddRef((IUnknown *)&(This->IUnknown_inner));
              hr = IUnknown_QueryInterface((IUnknown *)&(This->IUnknown_inner), riid, ppv);
              IUnknown_Release((IUnknown *)&(This->IUnknown_inner));
              This->bAggregatable = TRUE;
              return hr;
          }
  
          *ppv = NULL;
          return E_NOINTERFACE;
      }
  
      return IUnknown_QueryInterface((IUnknown *)&(This->IUnknown_inner), riid, ppv);
  }
  
  static ULONG SeekOuter_AddRef(PassThruImpl *This)
  {
      if (This->outer_unk && This->bUnkOuterValid)
          return IUnknown_AddRef(This->outer_unk);
      return IUnknown_AddRef((IUnknown *)&(This->IUnknown_inner));
  }
  
  static ULONG SeekOuter_Release(PassThruImpl *This)
  {
      if (This->outer_unk && This->bUnkOuterValid)
          return IUnknown_Release(This->outer_unk);
      return IUnknown_Release((IUnknown *)&(This->IUnknown_inner));
  }
  
  static HRESULT WINAPI SeekingPassThru_QueryInterface(ISeekingPassThru *iface, REFIID riid, LPVOID *ppvObj)
  {
      PassThruImpl *This = impl_from_ISeekingPassThru(iface);
  
      TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
  
      return SeekOuter_QueryInterface(This, riid, ppvObj);
  }
  
  static ULONG WINAPI SeekingPassThru_AddRef(ISeekingPassThru *iface)
  {
      PassThruImpl *This = impl_from_ISeekingPassThru(iface);
  
      TRACE("(%p/%p)->()\n", This, iface);
  
      return SeekOuter_AddRef(This);
  }
  
  static ULONG WINAPI SeekingPassThru_Release(ISeekingPassThru *iface)
  {
      PassThruImpl *This = impl_from_ISeekingPassThru(iface);
  
      TRACE("(%p/%p)->()\n", This, iface);
  
      return SeekOuter_Release(This);
  }
  
  static HRESULT WINAPI SeekingPassThru_Init(ISeekingPassThru *iface, BOOL renderer, IPin *pin)
  {
      PassThruImpl *This = impl_from_ISeekingPassThru(iface);
  
      TRACE("(%p/%p)->(%d, %p)\n", This, iface, renderer, pin);
  
      if (This->pin)
          FIXME("Re-initializing?\n");
  
      This->renderer = renderer;
      This->pin = pin;
  
      return S_OK;
  }
  
  static const ISeekingPassThruVtbl ISeekingPassThru_Vtbl =
  {
      SeekingPassThru_QueryInterface,
      SeekingPassThru_AddRef,
      SeekingPassThru_Release,
      SeekingPassThru_Init
  };
  
  HRESULT WINAPI CreatePosPassThru(IUnknown* pUnkOuter, BOOL bRenderer, IPin *pPin, IUnknown **ppPassThru)
  {
      HRESULT hr;
      ISeekingPassThru *passthru;
  
      hr = CoCreateInstance(&CLSID_SeekingPassThru, pUnkOuter, CLSCTX_INPROC_SERVER, &IID_IUnknown, (void**)ppPassThru);
  
      IUnknown_QueryInterface(*ppPassThru, &IID_ISeekingPassThru, (void**)&passthru);
      hr = ISeekingPassThru_Init(passthru, bRenderer, pPin);
      ISeekingPassThru_Release(passthru);
  
      return hr;
  }
  
  HRESULT WINAPI PosPassThru_Construct(IUnknown *pUnkOuter, LPVOID *ppPassThru)
  {
      PassThruImpl *fimpl;
  
      TRACE("(%p,%p)\n", pUnkOuter, ppPassThru);
  
      *ppPassThru = fimpl = CoTaskMemAlloc(sizeof(*fimpl));
      if (!fimpl)
          return E_OUTOFMEMORY;
  
      fimpl->outer_unk = pUnkOuter;
      fimpl->bUnkOuterValid = FALSE;
      fimpl->bAggregatable = FALSE;
      fimpl->IUnknown_inner.lpVtbl = &IInner_VTable;
      fimpl->ISeekingPassThru_iface.lpVtbl = &ISeekingPassThru_Vtbl;
      fimpl->IMediaSeeking_iface.lpVtbl = &IMediaSeekingPassThru_Vtbl;
      fimpl->IMediaPosition_iface.lpVtbl = &IMediaPositionPassThru_Vtbl;
      fimpl->ref = 1;
      fimpl->pin = NULL;
      fimpl->timevalid = FALSE;
      InitializeCriticalSection(&fimpl->time_cs);
      fimpl->time_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PassThruImpl.time_cs");
      BaseDispatch_Init(&fimpl->baseDispatch, &IID_IMediaPosition);
      return S_OK;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_QueryInterface(IMediaSeeking *iface, REFIID riid, LPVOID *ppvObj)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
  
      TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
  
      return SeekOuter_QueryInterface(This, riid, ppvObj);
  }
  
  static ULONG WINAPI MediaSeekingPassThru_AddRef(IMediaSeeking *iface)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
  
      TRACE("(%p/%p)->()\n", iface, This);
  
      return SeekOuter_AddRef(This);
  }
  
  static ULONG WINAPI MediaSeekingPassThru_Release(IMediaSeeking *iface)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
  
      TRACE("(%p/%p)->()\n", iface, This);
  
      return SeekOuter_Release(This);
  }
  
  static HRESULT get_connected(PassThruImpl *This, REFIID riid, LPVOID *ppvObj) {
      HRESULT hr;
      IPin *pin;
      *ppvObj = NULL;
      hr = IPin_ConnectedTo(This->pin, &pin);
      if (FAILED(hr))
          return VFW_E_NOT_CONNECTED;
      hr = IPin_QueryInterface(pin, riid, ppvObj);
      IPin_Release(pin);
      if (FAILED(hr))
          hr = E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetCapabilities(seek, pCapabilities);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_CheckCapabilities(seek, pCapabilities);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_IsFormatSupported(seek, pFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_QueryPreferredFormat(seek, pFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetTimeFormat(seek, pFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_IsUsingTimeFormat(seek, pFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_SetTimeFormat(seek, pFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pDuration);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetDuration(seek, pDuration);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, pStop);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetStopPosition(seek, pStop);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr = S_OK;
      TRACE("(%p/%p)->(%p)\n", iface, This, pCurrent);
      if (!pCurrent)
          return E_POINTER;
      EnterCriticalSection(&This->time_cs);
      if (This->timevalid)
          *pCurrent = This->time_earliest;
      else
          hr = E_FAIL;
      LeaveCriticalSection(&This->time_cs);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_ConvertTimeFormat(iface, pCurrent, NULL, *pCurrent, &TIME_FORMAT_MEDIA_TIME);
          return hr;
      }
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetCurrentPosition(seek, pCurrent);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p,%s,%x%08x,%s)\n", iface, This, pTarget, debugstr_guid(pTargetFormat), (DWORD)(Source>>32), (DWORD)Source, debugstr_guid(pSourceFormat));
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_ConvertTimeFormat(seek, pTarget, pTargetFormat, Source, pSourceFormat);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p,%x,%p,%x)\n", iface, This, pCurrent, dwCurrentFlags, pStop, dwStopFlags);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_SetPositions(seek, pCurrent, dwCurrentFlags, pStop, dwStopFlags);
          IMediaSeeking_Release(seek);
      } else if (hr == VFW_E_NOT_CONNECTED)
          hr = S_OK;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetPositions(seek, pCurrent, pStop);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p,%p)\n", iface, This, pEarliest, pLatest);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetAvailable(seek, pEarliest, pLatest);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_SetRate(IMediaSeeking * iface, double dRate)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%e)\n", iface, This, dRate);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_SetRate(seek, dRate);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetRate(IMediaSeeking * iface, double * dRate)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p/%p)->(%p)\n", iface, This, dRate);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetRate(seek, dRate);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaSeekingPassThru_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
  {
      PassThruImpl *This = impl_from_IMediaSeeking(iface);
      IMediaSeeking *seek;
      HRESULT hr;
      TRACE("(%p)\n", pPreroll);
      hr = get_connected(This, &IID_IMediaSeeking, (LPVOID*)&seek);
      if (SUCCEEDED(hr)) {
          hr = IMediaSeeking_GetPreroll(seek, pPreroll);
          IMediaSeeking_Release(seek);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  HRESULT WINAPI RendererPosPassThru_RegisterMediaTime(IUnknown *iface, REFERENCE_TIME start)
  {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      EnterCriticalSection(&This->time_cs);
      This->time_earliest = start;
      This->timevalid = TRUE;
      LeaveCriticalSection(&This->time_cs);
      return S_OK;
  }
  
  HRESULT WINAPI RendererPosPassThru_ResetMediaTime(IUnknown *iface)
  {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      EnterCriticalSection(&This->time_cs);
      This->timevalid = FALSE;
      LeaveCriticalSection(&This->time_cs);
      return S_OK;
  }
  
  HRESULT WINAPI RendererPosPassThru_EOS(IUnknown *iface)
  {
      PassThruImpl *This = impl_from_IUnknown_inner(iface);
      REFERENCE_TIME time;
      HRESULT hr;
      hr = IMediaSeeking_GetStopPosition(&This->IMediaSeeking_iface, &time);
      EnterCriticalSection(&This->time_cs);
      if (SUCCEEDED(hr)) {
          This->timevalid = TRUE;
          This->time_earliest = time;
      } else
          This->timevalid = FALSE;
      LeaveCriticalSection(&This->time_cs);
      return hr;
  }
  
  static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl =
  {
      MediaSeekingPassThru_QueryInterface,
      MediaSeekingPassThru_AddRef,
      MediaSeekingPassThru_Release,
      MediaSeekingPassThru_GetCapabilities,
      MediaSeekingPassThru_CheckCapabilities,
      MediaSeekingPassThru_IsFormatSupported,
      MediaSeekingPassThru_QueryPreferredFormat,
      MediaSeekingPassThru_GetTimeFormat,
      MediaSeekingPassThru_IsUsingTimeFormat,
      MediaSeekingPassThru_SetTimeFormat,
      MediaSeekingPassThru_GetDuration,
      MediaSeekingPassThru_GetStopPosition,
      MediaSeekingPassThru_GetCurrentPosition,
      MediaSeekingPassThru_ConvertTimeFormat,
      MediaSeekingPassThru_SetPositions,
      MediaSeekingPassThru_GetPositions,
      MediaSeekingPassThru_GetAvailable,
      MediaSeekingPassThru_SetRate,
      MediaSeekingPassThru_GetRate,
      MediaSeekingPassThru_GetPreroll
  };
  
  static HRESULT WINAPI MediaPositionPassThru_QueryInterface(IMediaPosition *iface, REFIID riid, LPVOID *ppvObj)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
  
      return SeekOuter_QueryInterface(This, riid, ppvObj);
  }
  
  static ULONG WINAPI MediaPositionPassThru_AddRef(IMediaPosition *iface)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      TRACE("(%p/%p)->()\n", iface, This);
  
      return SeekOuter_AddRef(This);
  }
  
  static ULONG WINAPI MediaPositionPassThru_Release(IMediaPosition *iface)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      TRACE("(%p/%p)->()\n", iface, This);
  
      return SeekOuter_Release(This);
  }
  
  static HRESULT WINAPI MediaPositionPassThru_GetTypeInfoCount(IMediaPosition *iface, UINT*pctinfo)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      return BaseDispatchImpl_GetTypeInfoCount(&This->baseDispatch, pctinfo);
  }
  
  static HRESULT WINAPI MediaPositionPassThru_GetTypeInfo(IMediaPosition *iface, UINT iTInfo, LCID lcid, ITypeInfo**ppTInfo)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      return BaseDispatchImpl_GetTypeInfo(&This->baseDispatch, &IID_NULL, iTInfo, lcid, ppTInfo);
  }
  
  static HRESULT WINAPI MediaPositionPassThru_GetIDsOfNames(IMediaPosition *iface, REFIID riid, LPOLESTR*rgszNames, UINT cNames, LCID lcid, DISPID*rgDispId)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
  
      return BaseDispatchImpl_GetIDsOfNames(&This->baseDispatch, riid, rgszNames, cNames, lcid, rgDispId);
  }
  
  static HRESULT WINAPI MediaPositionPassThru_Invoke(IMediaPosition *iface, DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS*pDispParams, VARIANT*pVarResult, EXCEPINFO*pExepInfo, UINT*puArgErr)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      HRESULT hr = S_OK;
      ITypeInfo *pTypeInfo;
  
      hr = BaseDispatchImpl_GetTypeInfo(&This->baseDispatch, riid, 1, lcid, &pTypeInfo);
      if (SUCCEEDED(hr))
      {
          hr = ITypeInfo_Invoke(pTypeInfo, &This->IMediaPosition_iface, dispIdMember, wFlags, pDispParams, pVarResult, pExepInfo, puArgErr);
          ITypeInfo_Release(pTypeInfo);
      }
  
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_get_Duration(IMediaPosition *iface, REFTIME *plength)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", plength);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_get_Duration(pos, plength);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_put_CurrentPosition(IMediaPosition *iface, REFTIME llTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%s)\n", wine_dbgstr_longlong(llTime));
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_put_CurrentPosition(pos, llTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_get_CurrentPosition(IMediaPosition *iface, REFTIME *pllTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pllTime);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_get_CurrentPosition(pos, pllTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_get_StopTime(IMediaPosition *iface, REFTIME *pllTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pllTime);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_get_StopTime(pos, pllTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_put_StopTime(IMediaPosition *iface, REFTIME llTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%s)\n", wine_dbgstr_longlong(llTime));
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_put_StopTime(pos, llTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_get_PrerollTime(IMediaPosition *iface, REFTIME *pllTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pllTime);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_get_PrerollTime(pos, pllTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_put_PrerollTime(IMediaPosition *iface, REFTIME llTime)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%s)\n", wine_dbgstr_longlong(llTime));
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_put_PrerollTime(pos, llTime);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_put_Rate(IMediaPosition *iface, double dRate)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%f)\n", dRate);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_put_Rate(pos, dRate);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_get_Rate(IMediaPosition *iface, double *pdRate)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pdRate);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_get_Rate(pos, pdRate);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_CanSeekForward(IMediaPosition *iface, LONG *pCanSeekForward)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pCanSeekForward);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_CanSeekForward(pos, pCanSeekForward);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static HRESULT WINAPI MediaPositionPassThru_CanSeekBackward(IMediaPosition *iface, LONG *pCanSeekBackward)
  {
      PassThruImpl *This = impl_from_IMediaPosition(iface);
      IMediaPosition *pos;
      HRESULT hr;
  
      TRACE("(%p)\n", pCanSeekBackward);
  
      hr = get_connected(This, &IID_IMediaPosition, (LPVOID*)&pos);
      if (SUCCEEDED(hr)) {
          hr = IMediaPosition_CanSeekBackward(pos, pCanSeekBackward);
          IMediaPosition_Release(pos);
      }
      else
          return E_NOTIMPL;
      return hr;
  }
  
  static const IMediaPositionVtbl IMediaPositionPassThru_Vtbl =
  {
      MediaPositionPassThru_QueryInterface,
      MediaPositionPassThru_AddRef,
      MediaPositionPassThru_Release,
      MediaPositionPassThru_GetTypeInfoCount,
      MediaPositionPassThru_GetTypeInfo,
      MediaPositionPassThru_GetIDsOfNames,
      MediaPositionPassThru_Invoke,
      MediaPositionPassThru_get_Duration,
      MediaPositionPassThru_put_CurrentPosition,
      MediaPositionPassThru_get_CurrentPosition,
      MediaPositionPassThru_get_StopTime,
      MediaPositionPassThru_put_StopTime,
      MediaPositionPassThru_get_PrerollTime,
      MediaPositionPassThru_put_PrerollTime,
      MediaPositionPassThru_put_Rate,
      MediaPositionPassThru_get_Rate,
      MediaPositionPassThru_CanSeekForward,
      MediaPositionPassThru_CanSeekBackward
  };
  