Sweden-Number/dlls/strmbase/pospass.c

628 lines
19 KiB
C
Raw Normal View History

/*
* 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);
#define ICOM_THIS_MULTI(impl,field,iface) impl* const This=(impl*)((char*)(iface) - offsetof(impl,field))
static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl;
typedef struct PassThruImpl {
const ISeekingPassThruVtbl *IPassThru_vtbl;
const IUnknownVtbl *IInner_vtbl;
const IMediaSeekingVtbl *IMediaSeeking_vtbl;
LONG ref;
IUnknown * pUnkOuter;
IPin * pin;
BOOL bUnkOuterValid;
BOOL bAggregatable;
BOOL renderer;
CRITICAL_SECTION time_cs;
BOOL timevalid;
REFERENCE_TIME time_earliest;
} PassThruImpl;
static HRESULT WINAPI SeekInner_QueryInterface(IUnknown * iface,
REFIID riid,
LPVOID *ppvObj) {
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, 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->IInner_vtbl);
TRACE(" returning IUnknown interface (%p)\n", *ppvObj);
} else if (IsEqualGUID(&IID_ISeekingPassThru, riid)) {
*ppvObj = &(This->IPassThru_vtbl);
TRACE(" returning ISeekingPassThru interface (%p)\n", *ppvObj);
} else if (IsEqualGUID(&IID_IMediaSeeking, riid)) {
*ppvObj = &(This->IMediaSeeking_vtbl);
TRACE(" returning IMediaSeeking 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) {
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p)->(): new ref = %d\n", This, ref);
return ref;
}
static ULONG WINAPI SeekInner_Release(IUnknown * iface) {
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p)->(): new ref = %d\n", This, ref);
if (ref == 0)
{
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
};
2008-04-11 04:17:14 +02:00
/* Generic functions for aggregation */
static HRESULT SeekOuter_QueryInterface(PassThruImpl *This, REFIID riid, LPVOID *ppv)
{
if (This->bAggregatable)
This->bUnkOuterValid = TRUE;
if (This->pUnkOuter)
{
if (This->bAggregatable)
return IUnknown_QueryInterface(This->pUnkOuter, riid, ppv);
if (IsEqualIID(riid, &IID_IUnknown))
{
HRESULT hr;
IUnknown_AddRef((IUnknown *)&(This->IInner_vtbl));
hr = IUnknown_QueryInterface((IUnknown *)&(This->IInner_vtbl), riid, ppv);
IUnknown_Release((IUnknown *)&(This->IInner_vtbl));
This->bAggregatable = TRUE;
return hr;
}
*ppv = NULL;
return E_NOINTERFACE;
}
return IUnknown_QueryInterface((IUnknown *)&(This->IInner_vtbl), riid, ppv);
}
static ULONG SeekOuter_AddRef(PassThruImpl *This)
{
if (This->pUnkOuter && This->bUnkOuterValid)
return IUnknown_AddRef(This->pUnkOuter);
return IUnknown_AddRef((IUnknown *)&(This->IInner_vtbl));
}
static ULONG SeekOuter_Release(PassThruImpl *This)
{
if (This->pUnkOuter && This->bUnkOuterValid)
return IUnknown_Release(This->pUnkOuter);
return IUnknown_Release((IUnknown *)&(This->IInner_vtbl));
}
static HRESULT WINAPI SeekingPassThru_QueryInterface(ISeekingPassThru *iface, REFIID riid, LPVOID *ppvObj)
{
ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, 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)
{
ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
TRACE("(%p/%p)->()\n", This, iface);
return SeekOuter_AddRef(This);
}
static ULONG WINAPI SeekingPassThru_Release(ISeekingPassThru *iface)
{
ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
TRACE("(%p/%p)->()\n", This, iface);
return SeekOuter_Release(This);
}
static HRESULT WINAPI SeekingPassThru_Init(ISeekingPassThru *iface, BOOL renderer, IPin *pin)
{
ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, 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->pUnkOuter = pUnkOuter;
fimpl->bUnkOuterValid = FALSE;
fimpl->bAggregatable = FALSE;
fimpl->IInner_vtbl = &IInner_VTable;
fimpl->IPassThru_vtbl = &ISeekingPassThru_Vtbl;
fimpl->IMediaSeeking_vtbl = &IMediaSeekingPassThru_Vtbl;
fimpl->ref = 1;
fimpl->pin = NULL;
fimpl->timevalid = 0;
InitializeCriticalSection(&fimpl->time_cs);
fimpl->time_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PassThruImpl.time_cs");
return S_OK;
}
static HRESULT WINAPI MediaSeekingPassThru_QueryInterface(IMediaSeeking *iface, REFIID riid, LPVOID *ppvObj)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, 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)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
TRACE("(%p/%p)->()\n", iface, This);
return SeekOuter_AddRef(This);
}
static ULONG WINAPI MediaSeekingPassThru_Release(IMediaSeeking *iface)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
TRACE("(%p/%p)->()\n", iface, This);
return SeekOuter_Release(This);
}
static HRESULT get_connected(PassThruImpl *This, IMediaSeeking **seek) {
HRESULT hr;
IPin *pin;
*seek = NULL;
hr = IPin_ConnectedTo(This->pin, &pin);
if (FAILED(hr))
2010-10-01 14:38:23 +02:00
return VFW_E_NOT_CONNECTED;
hr = IPin_QueryInterface(pin, &IID_IMediaSeeking, (void**)seek);
IPin_Release(pin);
if (FAILED(hr))
hr = E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetCapabilities(seek, pCapabilities);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_CheckCapabilities(seek, pCapabilities);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_IsFormatSupported(seek, pFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_QueryPreferredFormat(seek, pFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetTimeFormat(seek, pFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_IsUsingTimeFormat(seek, pFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%s)\n", iface, This, debugstr_guid(pFormat));
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_SetTimeFormat(seek, pFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pDuration);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetDuration(seek, pDuration);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, pStop);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetStopPosition(seek, pStop);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, 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, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetCurrentPosition(seek, pCurrent);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, 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, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_ConvertTimeFormat(seek, pTarget, pTargetFormat, Source, pSourceFormat);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p,%x,%p,%x)\n", iface, This, pCurrent, dwCurrentFlags, pStop, dwStopFlags);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_SetPositions(seek, pCurrent, dwCurrentFlags, pStop, dwStopFlags);
IMediaSeeking_Release(seek);
2010-10-01 14:38:23 +02:00
} else if (hr == VFW_E_NOT_CONNECTED)
hr = S_OK;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetPositions(seek, pCurrent, pStop);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p,%p)\n", iface, This, pEarliest, pLatest);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetAvailable(seek, pEarliest, pLatest);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_SetRate(IMediaSeeking * iface, double dRate)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%e)\n", iface, This, dRate);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_SetRate(seek, dRate);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetRate(IMediaSeeking * iface, double * dRate)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p/%p)->(%p)\n", iface, This, dRate);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetRate(seek, dRate);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
static HRESULT WINAPI MediaSeekingPassThru_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
{
ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
IMediaSeeking *seek;
HRESULT hr;
TRACE("(%p)\n", pPreroll);
hr = get_connected(This, &seek);
if (SUCCEEDED(hr)) {
hr = IMediaSeeking_GetPreroll(seek, pPreroll);
IMediaSeeking_Release(seek);
}
2010-10-01 14:38:23 +02:00
else
return E_NOTIMPL;
return hr;
}
HRESULT WINAPI RendererPosPassThru_RegisterMediaTime(IUnknown *iface, REFERENCE_TIME start)
{
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
EnterCriticalSection(&This->time_cs);
This->time_earliest = start;
This->timevalid = 1;
LeaveCriticalSection(&This->time_cs);
return S_OK;
}
HRESULT WINAPI RendererPosPassThru_ResetMediaTime(IUnknown *iface)
{
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
EnterCriticalSection(&This->time_cs);
This->timevalid = 0;
LeaveCriticalSection(&This->time_cs);
return S_OK;
}
HRESULT WINAPI RendererPosPassThru_EOS(IUnknown *iface)
{
ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
REFERENCE_TIME time;
HRESULT hr;
hr = IMediaSeeking_GetStopPosition((IMediaSeeking*)&This->IMediaSeeking_vtbl, &time);
EnterCriticalSection(&This->time_cs);
if (SUCCEEDED(hr)) {
This->timevalid = 1;
This->time_earliest = time;
} else
This->timevalid = 0;
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
};