ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Sweden-Number/dlls/qedit/samplegrabber.c

667 lines
21 KiB
C
Raw Blame History

/* DirectShow Sample Grabber object (QEDIT.DLL)
*
* Copyright 2009 Paul Chitescu
*
* 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
*/
#include <assert.h>
#include <stdarg.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "ole2.h"
#include "qedit_private.h"
#include "wine/debug.h"
#include "wine/strmbase.h"
WINE_DEFAULT_DEBUG_CHANNEL(qedit);
/* Sample Grabber filter implementation */
typedef struct _SG_Impl {
struct strmbase_filter filter;
ISampleGrabber ISampleGrabber_iface;
struct strmbase_source source;
/* IMediaSeeking and IMediaPosition are implemented by ISeekingPassThru */
IUnknown *seekthru_unk;
struct strmbase_sink sink;
AM_MEDIA_TYPE mtype;
IMemInputPin IMemInputPin_iface;
IMemAllocator *allocator;
ISampleGrabberCB *grabberIface;
LONG grabberMethod;
LONG oneShot;
LONG bufferLen;
void* bufferData;
} SG_Impl;
enum {
OneShot_None,
OneShot_Wait,
OneShot_Past,
};
static inline SG_Impl *impl_from_strmbase_filter(struct strmbase_filter *iface)
{
return CONTAINING_RECORD(iface, SG_Impl, filter);
}
static inline SG_Impl *impl_from_ISampleGrabber(ISampleGrabber *iface)
{
return CONTAINING_RECORD(iface, SG_Impl, ISampleGrabber_iface);
}
static inline SG_Impl *impl_from_IMemInputPin(IMemInputPin *iface)
{
return CONTAINING_RECORD(iface, SG_Impl, IMemInputPin_iface);
}
/* Cleanup at end of life */
static void SampleGrabber_cleanup(SG_Impl *This)
{
TRACE("(%p)\n", This);
if (This->filter.filterInfo.pGraph)
WARN("(%p) still joined to filter graph %p\n", This, This->filter.filterInfo.pGraph);
if (This->allocator)
IMemAllocator_Release(This->allocator);
if (This->grabberIface)
ISampleGrabberCB_Release(This->grabberIface);
CoTaskMemFree(This->mtype.pbFormat);
CoTaskMemFree(This->bufferData);
if(This->seekthru_unk)
IUnknown_Release(This->seekthru_unk);
}
static struct strmbase_pin *sample_grabber_get_pin(struct strmbase_filter *iface, unsigned int index)
{
SG_Impl *filter = impl_from_strmbase_filter(iface);
if (index == 0)
return &filter->sink.pin;
else if (index == 1)
return &filter->source.pin;
return NULL;
}
static void sample_grabber_destroy(struct strmbase_filter *iface)
{
SG_Impl *filter = impl_from_strmbase_filter(iface);
SampleGrabber_cleanup(filter);
strmbase_sink_cleanup(&filter->sink);
strmbase_source_cleanup(&filter->source);
strmbase_filter_cleanup(&filter->filter);
CoTaskMemFree(filter);
}
static HRESULT sample_grabber_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
{
SG_Impl *filter = impl_from_strmbase_filter(iface);
if (IsEqualGUID(iid, &IID_ISampleGrabber))
*out = &filter->ISampleGrabber_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static const struct strmbase_filter_ops filter_ops =
{
.filter_get_pin = sample_grabber_get_pin,
.filter_destroy = sample_grabber_destroy,
.filter_query_interface = sample_grabber_query_interface,
};
/* Helper that buffers data and/or calls installed sample callbacks */
static void SampleGrabber_callback(SG_Impl *This, IMediaSample *sample)
{
double time = 0.0;
REFERENCE_TIME tStart, tEnd;
if (This->bufferLen >= 0) {
BYTE *data = 0;
LONG size = IMediaSample_GetActualDataLength(sample);
if (size >= 0 && SUCCEEDED(IMediaSample_GetPointer(sample, &data))) {
if (!data)
size = 0;
EnterCriticalSection(&This->filter.csFilter);
if (This->bufferLen != size) {
CoTaskMemFree(This->bufferData);
This->bufferData = size ? CoTaskMemAlloc(size) : NULL;
This->bufferLen = size;
}
if (size)
CopyMemory(This->bufferData, data, size);
LeaveCriticalSection(&This->filter.csFilter);
}
}
if (!This->grabberIface)
return;
if (SUCCEEDED(IMediaSample_GetTime(sample, &tStart, &tEnd)))
time = 1e-7 * tStart;
switch (This->grabberMethod) {
case 0:
{
ULONG ref = IMediaSample_AddRef(sample);
ISampleGrabberCB_SampleCB(This->grabberIface, time, sample);
ref = IMediaSample_Release(sample) + 1 - ref;
if (ref)
{
ERR("(%p) Callback referenced sample %p by %u\n", This, sample, ref);
/* ugly as hell but some apps are sooo buggy */
while (ref--)
IMediaSample_Release(sample);
}
}
break;
case 1:
{
BYTE *data = 0;
LONG size = IMediaSample_GetActualDataLength(sample);
if (size && SUCCEEDED(IMediaSample_GetPointer(sample, &data)) && data)
ISampleGrabberCB_BufferCB(This->grabberIface, time, data, size);
}
break;
case -1:
break;
default:
FIXME("unsupported method %d\n", This->grabberMethod);
/* do not bother us again */
This->grabberMethod = -1;
}
}
/* IUnknown */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_QueryInterface(ISampleGrabber *iface, REFIID riid, void **ppv)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
return IUnknown_QueryInterface(This->filter.outer_unk, riid, ppv);
}
/* IUnknown */
static ULONG WINAPI
SampleGrabber_ISampleGrabber_AddRef(ISampleGrabber *iface)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
return IUnknown_AddRef(This->filter.outer_unk);
}
/* IUnknown */
static ULONG WINAPI
SampleGrabber_ISampleGrabber_Release(ISampleGrabber *iface)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
return IUnknown_Release(This->filter.outer_unk);
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_SetOneShot(ISampleGrabber *iface, BOOL oneShot)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
TRACE("(%p)->(%u)\n", This, oneShot);
This->oneShot = oneShot ? OneShot_Wait : OneShot_None;
return S_OK;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_SetMediaType(ISampleGrabber *iface, const AM_MEDIA_TYPE *type)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
TRACE("(%p)->(%p)\n", This, type);
if (!type)
return E_POINTER;
TRACE("Media type: %s/%s ssize: %u format: %s (%u bytes)\n",
debugstr_guid(&type->majortype), debugstr_guid(&type->subtype),
type->lSampleSize,
debugstr_guid(&type->formattype), type->cbFormat);
CoTaskMemFree(This->mtype.pbFormat);
This->mtype = *type;
This->mtype.pUnk = NULL;
if (type->cbFormat) {
This->mtype.pbFormat = CoTaskMemAlloc(type->cbFormat);
CopyMemory(This->mtype.pbFormat, type->pbFormat, type->cbFormat);
}
else
This->mtype.pbFormat = NULL;
return S_OK;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_GetConnectedMediaType(ISampleGrabber *iface, AM_MEDIA_TYPE *type)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
TRACE("(%p)->(%p)\n", This, type);
if (!type)
return E_POINTER;
if (!This->sink.pin.peer)
return VFW_E_NOT_CONNECTED;
*type = This->mtype;
if (type->cbFormat) {
type->pbFormat = CoTaskMemAlloc(type->cbFormat);
CopyMemory(type->pbFormat, This->mtype.pbFormat, type->cbFormat);
}
return S_OK;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_SetBufferSamples(ISampleGrabber *iface, BOOL bufferEm)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
TRACE("(%p)->(%u)\n", This, bufferEm);
EnterCriticalSection(&This->filter.csFilter);
if (bufferEm) {
if (This->bufferLen < 0)
This->bufferLen = 0;
}
else
This->bufferLen = -1;
LeaveCriticalSection(&This->filter.csFilter);
return S_OK;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_GetCurrentBuffer(ISampleGrabber *iface, LONG *bufSize, LONG *buffer)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
HRESULT ret = S_OK;
TRACE("(%p)->(%p, %p)\n", This, bufSize, buffer);
if (!bufSize)
return E_POINTER;
EnterCriticalSection(&This->filter.csFilter);
if (!This->sink.pin.peer)
ret = VFW_E_NOT_CONNECTED;
else if (This->bufferLen < 0)
ret = E_INVALIDARG;
else if (This->bufferLen == 0)
ret = VFW_E_WRONG_STATE;
else {
if (buffer) {
if (*bufSize >= This->bufferLen)
CopyMemory(buffer, This->bufferData, This->bufferLen);
else
ret = E_OUTOFMEMORY;
}
*bufSize = This->bufferLen;
}
LeaveCriticalSection(&This->filter.csFilter);
return ret;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_GetCurrentSample(ISampleGrabber *iface, IMediaSample **sample)
{
/* MS doesn't implement it either, no one should call it */
WARN("(%p): not implemented\n", sample);
return E_NOTIMPL;
}
/* ISampleGrabber */
static HRESULT WINAPI
SampleGrabber_ISampleGrabber_SetCallback(ISampleGrabber *iface, ISampleGrabberCB *cb, LONG whichMethod)
{
SG_Impl *This = impl_from_ISampleGrabber(iface);
TRACE("(%p)->(%p, %u)\n", This, cb, whichMethod);
if (This->grabberIface)
ISampleGrabberCB_Release(This->grabberIface);
This->grabberIface = cb;
This->grabberMethod = whichMethod;
if (cb)
ISampleGrabberCB_AddRef(cb);
return S_OK;
}
static HRESULT WINAPI SampleGrabber_IMemInputPin_QueryInterface(IMemInputPin *iface, REFIID iid, void **out)
{
SG_Impl *filter = impl_from_IMemInputPin(iface);
return IPin_QueryInterface(&filter->sink.pin.IPin_iface, iid, out);
}
static ULONG WINAPI SampleGrabber_IMemInputPin_AddRef(IMemInputPin *iface)
{
SG_Impl *filter = impl_from_IMemInputPin(iface);
return IPin_AddRef(&filter->sink.pin.IPin_iface);
}
static ULONG WINAPI SampleGrabber_IMemInputPin_Release(IMemInputPin *iface)
{
SG_Impl *filter = impl_from_IMemInputPin(iface);
return IPin_Release(&filter->sink.pin.IPin_iface);
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_GetAllocator(IMemInputPin *iface, IMemAllocator **allocator)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
TRACE("(%p)->(%p) allocator = %p\n", This, allocator, This->allocator);
if (!allocator)
return E_POINTER;
*allocator = This->allocator;
if (!*allocator)
return VFW_E_NO_ALLOCATOR;
IMemAllocator_AddRef(*allocator);
return S_OK;
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_NotifyAllocator(IMemInputPin *iface, IMemAllocator *allocator, BOOL readOnly)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
TRACE("(%p)->(%p, %u) allocator = %p\n", This, allocator, readOnly, This->allocator);
if (This->allocator == allocator)
return S_OK;
if (This->allocator)
IMemAllocator_Release(This->allocator);
This->allocator = allocator;
if (allocator)
IMemAllocator_AddRef(allocator);
return S_OK;
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_GetAllocatorRequirements(IMemInputPin *iface, ALLOCATOR_PROPERTIES *props)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
FIXME("(%p)->(%p): semi-stub\n", This, props);
if (!props)
return E_POINTER;
return This->source.pMemInputPin ? IMemInputPin_GetAllocatorRequirements(This->source.pMemInputPin, props) : E_NOTIMPL;
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_Receive(IMemInputPin *iface, IMediaSample *sample)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
HRESULT hr;
TRACE("(%p)->(%p) output = %p, grabber = %p\n", This, sample, This->source.pMemInputPin, This->grabberIface);
if (!sample)
return E_POINTER;
if (This->oneShot == OneShot_Past)
return S_FALSE;
SampleGrabber_callback(This, sample);
hr = This->source.pMemInputPin ? IMemInputPin_Receive(This->source.pMemInputPin, sample) : S_OK;
if (This->oneShot == OneShot_Wait) {
This->oneShot = OneShot_Past;
hr = S_FALSE;
if (This->source.pin.peer)
IPin_EndOfStream(This->source.pin.peer);
}
return hr;
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_ReceiveMultiple(IMemInputPin *iface, IMediaSample **samples, LONG nSamples, LONG *nProcessed)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
LONG idx;
TRACE("(%p)->(%p, %u, %p) output = %p, grabber = %p\n", This, samples, nSamples, nProcessed, This->source.pMemInputPin, This->grabberIface);
if (!samples || !nProcessed)
return E_POINTER;
if ((This->filter.state != State_Running) || (This->oneShot == OneShot_Past))
return S_FALSE;
for (idx = 0; idx < nSamples; idx++)
SampleGrabber_callback(This, samples[idx]);
return This->source.pMemInputPin ? IMemInputPin_ReceiveMultiple(This->source.pMemInputPin, samples, nSamples, nProcessed) : S_OK;
}
/* IMemInputPin */
static HRESULT WINAPI
SampleGrabber_IMemInputPin_ReceiveCanBlock(IMemInputPin *iface)
{
SG_Impl *This = impl_from_IMemInputPin(iface);
TRACE("(%p)\n", This);
return This->source.pMemInputPin ? IMemInputPin_ReceiveCanBlock(This->source.pMemInputPin) : S_OK;
}
static const ISampleGrabberVtbl ISampleGrabber_VTable =
{
SampleGrabber_ISampleGrabber_QueryInterface,
SampleGrabber_ISampleGrabber_AddRef,
SampleGrabber_ISampleGrabber_Release,
SampleGrabber_ISampleGrabber_SetOneShot,
SampleGrabber_ISampleGrabber_SetMediaType,
SampleGrabber_ISampleGrabber_GetConnectedMediaType,
SampleGrabber_ISampleGrabber_SetBufferSamples,
SampleGrabber_ISampleGrabber_GetCurrentBuffer,
SampleGrabber_ISampleGrabber_GetCurrentSample,
SampleGrabber_ISampleGrabber_SetCallback,
};
static const IMemInputPinVtbl IMemInputPin_VTable =
{
SampleGrabber_IMemInputPin_QueryInterface,
SampleGrabber_IMemInputPin_AddRef,
SampleGrabber_IMemInputPin_Release,
SampleGrabber_IMemInputPin_GetAllocator,
SampleGrabber_IMemInputPin_NotifyAllocator,
SampleGrabber_IMemInputPin_GetAllocatorRequirements,
SampleGrabber_IMemInputPin_Receive,
SampleGrabber_IMemInputPin_ReceiveMultiple,
SampleGrabber_IMemInputPin_ReceiveCanBlock,
};
static inline SG_Impl *impl_from_sink_pin(struct strmbase_pin *iface)
{
return CONTAINING_RECORD(iface, SG_Impl, sink.pin);
}
static HRESULT sample_grabber_sink_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
SG_Impl *filter = impl_from_sink_pin(iface);
if (IsEqualGUID(iid, &IID_IMemInputPin))
*out = &filter->IMemInputPin_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT sample_grabber_sink_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
return S_OK;
}
static HRESULT sample_grabber_sink_get_media_type(struct strmbase_pin *iface,
unsigned int index, AM_MEDIA_TYPE *mt)
{
SG_Impl *filter = impl_from_sink_pin(iface);
if (!index)
{
CopyMediaType(mt, &filter->mtype);
return S_OK;
}
return VFW_S_NO_MORE_ITEMS;
}
static HRESULT sample_grabber_sink_connect(struct strmbase_sink *iface,
IPin *peer, const AM_MEDIA_TYPE *mt)
{
SG_Impl *filter = impl_from_sink_pin(&iface->pin);
if (!IsEqualGUID(&mt->formattype, &FORMAT_None)
&& !IsEqualGUID(&mt->formattype, &GUID_NULL) && !mt->pbFormat)
return VFW_E_INVALIDMEDIATYPE;
if (!IsEqualGUID(&filter->mtype.majortype, &GUID_NULL)
&& !IsEqualGUID(&filter->mtype.majortype, &mt->majortype))
return VFW_E_TYPE_NOT_ACCEPTED;
if (!IsEqualGUID(&filter->mtype.subtype,&MEDIASUBTYPE_None)
&& !IsEqualGUID(&filter->mtype.subtype, &mt->subtype))
return VFW_E_TYPE_NOT_ACCEPTED;
if (!IsEqualGUID(&filter->mtype.formattype, &GUID_NULL)
&& !IsEqualGUID(&filter->mtype.formattype, &FORMAT_None)
&& !IsEqualGUID(&filter->mtype.formattype, &mt->formattype))
return VFW_E_TYPE_NOT_ACCEPTED;
FreeMediaType(&filter->mtype);
CopyMediaType(&filter->mtype, mt);
return S_OK;
}
static const struct strmbase_sink_ops sink_ops =
{
.base.pin_query_interface = sample_grabber_sink_query_interface,
.base.pin_query_accept = sample_grabber_sink_query_accept,
.base.pin_get_media_type = sample_grabber_sink_get_media_type,
.sink_connect = sample_grabber_sink_connect,
};
static inline SG_Impl *impl_from_source_pin(struct strmbase_pin *iface)
{
return CONTAINING_RECORD(iface, SG_Impl, source.pin);
}
static HRESULT sample_grabber_source_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
SG_Impl *filter = impl_from_source_pin(iface);
if (IsEqualGUID(iid, &IID_IMediaPosition) || IsEqualGUID(iid, &IID_IMediaSeeking))
return IUnknown_QueryInterface(filter->seekthru_unk, iid, out);
else
return E_NOINTERFACE;
}
static HRESULT sample_grabber_source_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
return S_OK;
}
static HRESULT sample_grabber_source_get_media_type(struct strmbase_pin *iface,
unsigned int index, AM_MEDIA_TYPE *mt)
{
SG_Impl *filter = impl_from_source_pin(iface);
if (!index)
{
CopyMediaType(mt, &filter->mtype);
return S_OK;
}
return VFW_S_NO_MORE_ITEMS;
}
static HRESULT WINAPI sample_grabber_source_AttemptConnection(struct strmbase_source *iface,
IPin *peer, const AM_MEDIA_TYPE *mt)
{
SG_Impl *filter = impl_from_source_pin(&iface->pin);
HRESULT hr;
if (filter->source.pin.peer)
return VFW_E_ALREADY_CONNECTED;
if (filter->filter.state != State_Stopped)
return VFW_E_NOT_STOPPED;
if (!IsEqualGUID(&mt->majortype, &filter->mtype.majortype))
return VFW_E_TYPE_NOT_ACCEPTED;
if (!IsEqualGUID(&mt->subtype, &filter->mtype.subtype))
return VFW_E_TYPE_NOT_ACCEPTED;
if (!IsEqualGUID(&mt->formattype, &FORMAT_None)
&& !IsEqualGUID(&mt->formattype, &GUID_NULL)
&& !IsEqualGUID(&mt->formattype, &filter->mtype.formattype))
return VFW_E_TYPE_NOT_ACCEPTED;
if (!IsEqualGUID(&mt->formattype, &FORMAT_None)
&& !IsEqualGUID(&mt->formattype, &GUID_NULL)
&& !mt->pbFormat)
return VFW_E_TYPE_NOT_ACCEPTED;
IPin_AddRef(filter->source.pin.peer = peer);
CopyMediaType(&filter->source.pin.mt, mt);
if (SUCCEEDED(hr = IPin_ReceiveConnection(peer, &filter->source.pin.IPin_iface, mt)))
hr = IPin_QueryInterface(peer, &IID_IMemInputPin, (void **)&filter->source.pMemInputPin);
if (FAILED(hr))
{
IPin_Release(filter->source.pin.peer);
filter->source.pin.peer = NULL;
FreeMediaType(&filter->source.pin.mt);
}
return hr;
}
static const struct strmbase_source_ops source_ops =
{
.base.pin_query_interface = sample_grabber_source_query_interface,
.base.pin_query_accept = sample_grabber_source_query_accept,
.base.pin_get_media_type = sample_grabber_source_get_media_type,
.pfnAttemptConnection = sample_grabber_source_AttemptConnection,
};
HRESULT SampleGrabber_create(IUnknown *outer, void **out)
{
SG_Impl* obj = NULL;
ISeekingPassThru *passthru;
HRESULT hr;
obj = CoTaskMemAlloc(sizeof(SG_Impl));
if (NULL == obj) {
*out = NULL;
return E_OUTOFMEMORY;
}
ZeroMemory(obj, sizeof(SG_Impl));
strmbase_filter_init(&obj->filter, outer, &CLSID_SampleGrabber, &filter_ops);
obj->ISampleGrabber_iface.lpVtbl = &ISampleGrabber_VTable;
obj->IMemInputPin_iface.lpVtbl = &IMemInputPin_VTable;
strmbase_sink_init(&obj->sink, &obj->filter, L"In", &sink_ops, NULL);
strmbase_source_init(&obj->source, &obj->filter, L"Out", &source_ops);
obj->mtype.majortype = GUID_NULL;
obj->mtype.subtype = MEDIASUBTYPE_None;
obj->mtype.formattype = FORMAT_None;
obj->allocator = NULL;
obj->grabberIface = NULL;
obj->grabberMethod = -1;
obj->oneShot = OneShot_None;
obj->bufferLen = -1;
obj->bufferData = NULL;
hr = CoCreateInstance(&CLSID_SeekingPassThru, &obj->filter.IUnknown_inner,
CLSCTX_INPROC_SERVER, &IID_IUnknown, (void **)&obj->seekthru_unk);
if(hr)
return hr;
IUnknown_QueryInterface(obj->seekthru_unk, &IID_ISeekingPassThru, (void**)&passthru);
ISeekingPassThru_Init(passthru, FALSE, &obj->sink.pin.IPin_iface);
ISeekingPassThru_Release(passthru);
*out = &obj->filter.IUnknown_inner;
return S_OK;
}
Reference in New Issue View Git Blame Copy Permalink