Sweden-Number/dlls/qasf/dmowrapper.c

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/*
* DMO wrapper filter
*
* Copyright (C) 2019 Zebediah Figura
*
* 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 "qasf_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(qasf);
struct buffer
{
IMediaBuffer IMediaBuffer_iface;
IMediaSample *sample;
};
struct dmo_wrapper_source
{
struct strmbase_source pin;
struct buffer buffer;
struct strmbase_passthrough passthrough;
};
struct dmo_wrapper
{
struct strmbase_filter filter;
IDMOWrapperFilter IDMOWrapperFilter_iface;
IUnknown *dmo;
DWORD sink_count, source_count;
struct strmbase_sink *sinks;
struct dmo_wrapper_source *sources;
DMO_OUTPUT_DATA_BUFFER *buffers;
struct buffer input_buffer;
};
static struct buffer *impl_from_IMediaBuffer(IMediaBuffer *iface)
{
return CONTAINING_RECORD(iface, struct buffer, IMediaBuffer_iface);
}
static HRESULT WINAPI buffer_QueryInterface(IMediaBuffer *iface, REFIID iid, void **out)
{
TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
if (IsEqualGUID(iid, &IID_IUnknown) || IsEqualGUID(iid, &IID_IMediaBuffer))
{
IMediaBuffer_AddRef(iface);
*out = iface;
return S_OK;
}
WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
*out = NULL;
return E_NOINTERFACE;
}
static ULONG WINAPI buffer_AddRef(IMediaBuffer *iface)
{
TRACE("iface %p.\n", iface);
return 2;
}
static ULONG WINAPI buffer_Release(IMediaBuffer *iface)
{
TRACE("iface %p.\n", iface);
return 1;
}
static HRESULT WINAPI buffer_SetLength(IMediaBuffer *iface, DWORD len)
{
struct buffer *buffer = impl_from_IMediaBuffer(iface);
TRACE("iface %p, len %u.\n", iface, len);
return IMediaSample_SetActualDataLength(buffer->sample, len);
}
static HRESULT WINAPI buffer_GetMaxLength(IMediaBuffer *iface, DWORD *len)
{
struct buffer *buffer = impl_from_IMediaBuffer(iface);
TRACE("iface %p, len %p.\n", iface, len);
*len = IMediaSample_GetSize(buffer->sample);
return S_OK;
}
static HRESULT WINAPI buffer_GetBufferAndLength(IMediaBuffer *iface, BYTE **data, DWORD *len)
{
struct buffer *buffer = impl_from_IMediaBuffer(iface);
TRACE("iface %p, data %p, len %p.\n", iface, data, len);
*len = IMediaSample_GetActualDataLength(buffer->sample);
return IMediaSample_GetPointer(buffer->sample, data);
}
static const IMediaBufferVtbl buffer_vtbl =
{
buffer_QueryInterface,
buffer_AddRef,
buffer_Release,
buffer_SetLength,
buffer_GetMaxLength,
buffer_GetBufferAndLength,
};
static inline struct dmo_wrapper *impl_from_strmbase_filter(struct strmbase_filter *iface)
{
return CONTAINING_RECORD(iface, struct dmo_wrapper, filter);
}
static inline struct strmbase_sink *impl_sink_from_strmbase_pin(struct strmbase_pin *iface)
{
return CONTAINING_RECORD(iface, struct strmbase_sink, pin);
}
static HRESULT dmo_wrapper_sink_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
struct strmbase_sink *sink = impl_sink_from_strmbase_pin(iface);
if (IsEqualGUID(iid, &IID_IMemInputPin))
*out = &sink->IMemInputPin_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT dmo_wrapper_sink_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->filter);
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
hr = IMediaObject_SetInputType(dmo, impl_sink_from_strmbase_pin(iface) - filter->sinks,
(const DMO_MEDIA_TYPE *)mt, DMO_SET_TYPEF_TEST_ONLY);
IMediaObject_Release(dmo);
return hr;
}
static HRESULT dmo_wrapper_sink_get_media_type(struct strmbase_pin *iface, unsigned int index, AM_MEDIA_TYPE *mt)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->filter);
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
hr = IMediaObject_GetInputType(dmo, impl_sink_from_strmbase_pin(iface) - filter->sinks,
index, (DMO_MEDIA_TYPE *)mt);
IMediaObject_Release(dmo);
return hr == S_OK ? S_OK : VFW_S_NO_MORE_ITEMS;
}
static HRESULT dmo_wrapper_sink_connect(struct strmbase_sink *iface, IPin *peer, const AM_MEDIA_TYPE *mt)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
hr = IMediaObject_SetInputType(dmo, iface - filter->sinks, (const DMO_MEDIA_TYPE *)mt, 0);
IMediaObject_Release(dmo);
return hr;
}
static void dmo_wrapper_sink_disconnect(struct strmbase_sink *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
IMediaObject *dmo;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
IMediaObject_SetInputType(dmo, iface - filter->sinks, NULL, DMO_SET_TYPEF_CLEAR);
IMediaObject_Release(dmo);
}
static HRESULT process_output(struct dmo_wrapper *filter, IMediaObject *dmo)
{
DMO_OUTPUT_DATA_BUFFER *buffers = filter->buffers;
DWORD status, i;
BOOL more_data;
HRESULT hr;
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].pin.pin.peer)
{
if (FAILED(hr = IMemAllocator_GetBuffer(filter->sources[i].pin.pAllocator,
&filter->sources[i].buffer.sample, NULL, NULL, 0)))
{
ERR("Failed to get sample, hr %#x.\n", hr);
goto out;
}
buffers[i].pBuffer = &filter->sources[i].buffer.IMediaBuffer_iface;
IMediaSample_SetActualDataLength(filter->sources[i].buffer.sample, 0);
}
else
buffers[i].pBuffer = NULL;
}
do
{
more_data = FALSE;
hr = IMediaObject_ProcessOutput(dmo, DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER,
filter->source_count, buffers, &status);
if (hr != S_OK)
break;
for (i = 0; i < filter->source_count; ++i)
{
IMediaSample *sample = filter->sources[i].buffer.sample;
if (!buffers[i].pBuffer)
continue;
if (buffers[i].dwStatus & DMO_OUTPUT_DATA_BUFFERF_INCOMPLETE)
more_data = TRUE;
if (buffers[i].dwStatus & DMO_OUTPUT_DATA_BUFFERF_TIME)
{
if (buffers[i].dwStatus & DMO_OUTPUT_DATA_BUFFERF_TIMELENGTH)
{
REFERENCE_TIME stop = buffers[i].rtTimestamp + buffers[i].rtTimelength;
IMediaSample_SetTime(sample, &buffers[i].rtTimestamp, &stop);
}
else
IMediaSample_SetTime(sample, &buffers[i].rtTimestamp, NULL);
}
if (buffers[i].dwStatus & DMO_OUTPUT_DATA_BUFFERF_SYNCPOINT)
IMediaSample_SetSyncPoint(sample, TRUE);
if (IMediaSample_GetActualDataLength(sample))
{
if (FAILED(hr = IMemInputPin_Receive(filter->sources[i].pin.pMemInputPin, sample)))
{
WARN("Downstream sink returned %#x.\n", hr);
goto out;
}
IMediaSample_SetActualDataLength(sample, 0);
}
}
} while (more_data);
out:
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].buffer.sample)
{
IMediaSample_Release(filter->sources[i].buffer.sample);
filter->sources[i].buffer.sample = NULL;
}
}
return hr;
}
static HRESULT WINAPI dmo_wrapper_sink_Receive(struct strmbase_sink *iface, IMediaSample *sample)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
DWORD index = iface - filter->sinks;
REFERENCE_TIME start = 0, stop = 0;
IMediaObject *dmo;
DWORD flags = 0;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
if (IMediaSample_IsDiscontinuity(sample) == S_OK)
{
if (FAILED(hr = IMediaObject_Discontinuity(dmo, index)))
{
ERR("Discontinuity() failed, hr %#x.\n", hr);
goto out;
}
/* Calling Discontinuity() might change the DMO's mind about whether it
* has more data to process. The DirectX documentation explicitly
* states that we should call ProcessOutput() again in this case. */
process_output(filter, dmo);
}
if (IMediaSample_IsSyncPoint(sample) == S_OK)
flags |= DMO_INPUT_DATA_BUFFERF_SYNCPOINT;
if (SUCCEEDED(hr = IMediaSample_GetTime(sample, &start, &stop)))
{
flags |= DMO_INPUT_DATA_BUFFERF_TIME | DMO_INPUT_DATA_BUFFERF_TIMELENGTH;
if (hr == VFW_S_NO_STOP_TIME)
stop = start + 1;
}
filter->input_buffer.sample = sample;
if (FAILED(hr = IMediaObject_ProcessInput(dmo, index,
&filter->input_buffer.IMediaBuffer_iface, flags, start, stop - start)))
{
ERR("ProcessInput() failed, hr %#x.\n", hr);
goto out;
}
process_output(filter, dmo);
out:
filter->input_buffer.sample = NULL;
IMediaObject_Release(dmo);
return hr;
}
static HRESULT dmo_wrapper_sink_eos(struct strmbase_sink *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
DWORD index = iface - filter->sinks, i;
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
if (FAILED(hr = IMediaObject_Discontinuity(dmo, index)))
ERR("Discontinuity() failed, hr %#x.\n", hr);
process_output(filter, dmo);
if (FAILED(hr = IMediaObject_Flush(dmo)))
ERR("Flush() failed, hr %#x.\n", hr);
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].pin.pin.peer)
IPin_EndOfStream(filter->sources[i].pin.pin.peer);
}
IMediaObject_Release(dmo);
return hr;
}
static HRESULT dmo_wrapper_end_flush(struct strmbase_sink *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
IMediaObject *dmo;
HRESULT hr;
DWORD i;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
if (FAILED(hr = IMediaObject_Flush(dmo)))
ERR("Flush() failed, hr %#x.\n", hr);
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].pin.pin.peer)
IPin_EndFlush(filter->sources[i].pin.pin.peer);
}
IMediaObject_Release(dmo);
return hr;
}
static const struct strmbase_sink_ops sink_ops =
{
.base.pin_query_interface = dmo_wrapper_sink_query_interface,
.base.pin_query_accept = dmo_wrapper_sink_query_accept,
.base.pin_get_media_type = dmo_wrapper_sink_get_media_type,
.sink_connect = dmo_wrapper_sink_connect,
.sink_disconnect = dmo_wrapper_sink_disconnect,
.sink_eos = dmo_wrapper_sink_eos,
.sink_end_flush = dmo_wrapper_end_flush,
.pfnReceive = dmo_wrapper_sink_Receive,
};
static inline struct dmo_wrapper_source *impl_source_from_strmbase_pin(struct strmbase_pin *iface)
{
return CONTAINING_RECORD(iface, struct dmo_wrapper_source, pin.pin);
}
static HRESULT dmo_wrapper_source_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
struct dmo_wrapper_source *pin = impl_source_from_strmbase_pin(iface);
if (IsEqualGUID(iid, &IID_IMediaPosition))
*out = &pin->passthrough.IMediaPosition_iface;
else if (IsEqualGUID(iid, &IID_IMediaSeeking))
*out = &pin->passthrough.IMediaSeeking_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT dmo_wrapper_source_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->filter);
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
hr = IMediaObject_SetOutputType(dmo, impl_source_from_strmbase_pin(iface) - filter->sources,
(const DMO_MEDIA_TYPE *)mt, DMO_SET_TYPEF_TEST_ONLY);
IMediaObject_Release(dmo);
return hr;
}
static HRESULT dmo_wrapper_source_get_media_type(struct strmbase_pin *iface, unsigned int index, AM_MEDIA_TYPE *mt)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->filter);
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
hr = IMediaObject_GetOutputType(dmo, impl_source_from_strmbase_pin(iface) - filter->sources,
index, (DMO_MEDIA_TYPE *)mt);
IMediaObject_Release(dmo);
return hr == S_OK ? S_OK : VFW_S_NO_MORE_ITEMS;
}
static HRESULT WINAPI dmo_wrapper_source_DecideBufferSize(struct strmbase_source *iface,
IMemAllocator *allocator, ALLOCATOR_PROPERTIES *props)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
DWORD index = impl_source_from_strmbase_pin(&iface->pin) - filter->sources;
ALLOCATOR_PROPERTIES ret_props;
DWORD size = 0, alignment = 0;
IMediaObject *dmo;
HRESULT hr;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
if (SUCCEEDED(hr = IMediaObject_SetOutputType(dmo, index,
(const DMO_MEDIA_TYPE *)&iface->pin.mt, 0)))
hr = IMediaObject_GetOutputSizeInfo(dmo, index, &size, &alignment);
if (SUCCEEDED(hr))
{
props->cBuffers = max(props->cBuffers, 1);
props->cbBuffer = max(max(props->cbBuffer, size), 16384);
props->cbAlign = max(props->cbAlign, alignment);
hr = IMemAllocator_SetProperties(allocator, props, &ret_props);
}
IMediaObject_Release(dmo);
return hr;
}
static void dmo_wrapper_source_disconnect(struct strmbase_source *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface->pin.filter);
IMediaObject *dmo;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
IMediaObject_SetOutputType(dmo, impl_source_from_strmbase_pin(&iface->pin) - filter->sources,
NULL, DMO_SET_TYPEF_CLEAR);
IMediaObject_Release(dmo);
}
static const struct strmbase_source_ops source_ops =
{
.base.pin_query_interface = dmo_wrapper_source_query_interface,
.base.pin_query_accept = dmo_wrapper_source_query_accept,
.base.pin_get_media_type = dmo_wrapper_source_get_media_type,
.pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
.pfnDecideAllocator = BaseOutputPinImpl_DecideAllocator,
.pfnDecideBufferSize = dmo_wrapper_source_DecideBufferSize,
.source_disconnect = dmo_wrapper_source_disconnect,
};
static inline struct dmo_wrapper *impl_from_IDMOWrapperFilter(IDMOWrapperFilter *iface)
{
return CONTAINING_RECORD(iface, struct dmo_wrapper, IDMOWrapperFilter_iface);
}
static HRESULT WINAPI dmo_wrapper_filter_QueryInterface(IDMOWrapperFilter *iface, REFIID iid, void **out)
{
struct dmo_wrapper *filter = impl_from_IDMOWrapperFilter(iface);
return IUnknown_QueryInterface(filter->filter.outer_unk, iid, out);
}
static ULONG WINAPI dmo_wrapper_filter_AddRef(IDMOWrapperFilter *iface)
{
struct dmo_wrapper *filter = impl_from_IDMOWrapperFilter(iface);
return IUnknown_AddRef(filter->filter.outer_unk);
}
static ULONG WINAPI dmo_wrapper_filter_Release(IDMOWrapperFilter *iface)
{
struct dmo_wrapper *filter = impl_from_IDMOWrapperFilter(iface);
return IUnknown_Release(filter->filter.outer_unk);
}
static HRESULT WINAPI dmo_wrapper_filter_Init(IDMOWrapperFilter *iface, REFCLSID clsid, REFCLSID category)
{
struct dmo_wrapper *filter = impl_from_IDMOWrapperFilter(iface);
struct dmo_wrapper_source *sources;
DMO_OUTPUT_DATA_BUFFER *buffers;
DWORD input_count, output_count;
struct strmbase_sink *sinks;
IMediaObject *dmo;
IUnknown *unk;
WCHAR id[14];
HRESULT hr;
DWORD i;
TRACE("filter %p, clsid %s, category %s.\n", filter, debugstr_guid(clsid), debugstr_guid(category));
if (FAILED(hr = CoCreateInstance(clsid, &filter->filter.IUnknown_inner,
CLSCTX_INPROC_SERVER, &IID_IUnknown, (void **)&unk)))
return hr;
if (FAILED(hr = IUnknown_QueryInterface(unk, &IID_IMediaObject, (void **)&dmo)))
{
IUnknown_Release(unk);
return hr;
}
if (FAILED(IMediaObject_GetStreamCount(dmo, &input_count, &output_count)))
input_count = output_count = 0;
sinks = calloc(sizeof(*sinks), input_count);
sources = calloc(sizeof(*sources), output_count);
buffers = calloc(sizeof(*buffers), output_count);
if (!sinks || !sources || !buffers)
{
free(sinks);
free(sources);
free(buffers);
IMediaObject_Release(dmo);
IUnknown_Release(unk);
return hr;
}
for (i = 0; i < input_count; ++i)
{
swprintf(id, ARRAY_SIZE(id), L"in%u", i);
strmbase_sink_init(&sinks[i], &filter->filter, id, &sink_ops, NULL);
}
for (i = 0; i < output_count; ++i)
{
swprintf(id, ARRAY_SIZE(id), L"out%u", i);
strmbase_source_init(&sources[i].pin, &filter->filter, id, &source_ops);
sources[i].buffer.IMediaBuffer_iface.lpVtbl = &buffer_vtbl;
strmbase_passthrough_init(&sources[i].passthrough, (IUnknown *)&sources[i].pin.pin.IPin_iface);
ISeekingPassThru_Init(&sources[i].passthrough.ISeekingPassThru_iface,
FALSE, &sinks[0].pin.IPin_iface);
}
EnterCriticalSection(&filter->filter.filter_cs);
filter->dmo = unk;
filter->sink_count = input_count;
filter->source_count = output_count;
filter->sinks = sinks;
filter->sources = sources;
filter->buffers = buffers;
LeaveCriticalSection(&filter->filter.filter_cs);
IMediaObject_Release(dmo);
return S_OK;
}
static const IDMOWrapperFilterVtbl dmo_wrapper_filter_vtbl =
{
dmo_wrapper_filter_QueryInterface,
dmo_wrapper_filter_AddRef,
dmo_wrapper_filter_Release,
dmo_wrapper_filter_Init,
};
static struct strmbase_pin *dmo_wrapper_get_pin(struct strmbase_filter *iface, unsigned int index)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface);
if (index < filter->sink_count)
return &filter->sinks[index].pin;
else if (index < filter->sink_count + filter->source_count)
return &filter->sources[index - filter->sink_count].pin.pin;
return NULL;
}
static void dmo_wrapper_destroy(struct strmbase_filter *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface);
DWORD i;
if (filter->dmo)
IUnknown_Release(filter->dmo);
for (i = 0; i < filter->sink_count; ++i)
strmbase_sink_cleanup(&filter->sinks[i]);
for (i = 0; i < filter->source_count; ++i)
{
strmbase_passthrough_cleanup(&filter->sources[i].passthrough);
strmbase_source_cleanup(&filter->sources[i].pin);
}
free(filter->sinks);
free(filter->sources);
strmbase_filter_cleanup(&filter->filter);
free(filter);
}
static HRESULT dmo_wrapper_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface);
if (IsEqualGUID(iid, &IID_IDMOWrapperFilter))
{
*out = &filter->IDMOWrapperFilter_iface;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
if (filter->dmo && !IsEqualGUID(iid, &IID_IUnknown))
return IUnknown_QueryInterface(filter->dmo, iid, out);
return E_NOINTERFACE;
}
static HRESULT dmo_wrapper_init_stream(struct strmbase_filter *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface);
DWORD i;
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].pin.pin.peer)
IMemAllocator_Commit(filter->sources[i].pin.pAllocator);
}
return S_OK;
}
static HRESULT dmo_wrapper_cleanup_stream(struct strmbase_filter *iface)
{
struct dmo_wrapper *filter = impl_from_strmbase_filter(iface);
IMediaObject *dmo;
DWORD i;
if (!filter->dmo)
return E_FAIL;
IUnknown_QueryInterface(filter->dmo, &IID_IMediaObject, (void **)&dmo);
for (i = 0; i < filter->source_count; ++i)
{
if (filter->sources[i].pin.pin.peer)
IMemAllocator_Decommit(filter->sources[i].pin.pAllocator);
}
IMediaObject_Flush(dmo);
IMediaObject_Release(dmo);
return S_OK;
}
static struct strmbase_filter_ops filter_ops =
{
.filter_get_pin = dmo_wrapper_get_pin,
.filter_destroy = dmo_wrapper_destroy,
.filter_query_interface = dmo_wrapper_query_interface,
.filter_init_stream = dmo_wrapper_init_stream,
.filter_cleanup_stream = dmo_wrapper_cleanup_stream,
};
HRESULT dmo_wrapper_create(IUnknown *outer, IUnknown **out)
{
struct dmo_wrapper *object;
if (!(object = calloc(sizeof(*object), 1)))
return E_OUTOFMEMORY;
/* Always pass NULL as the outer object; see test_aggregation(). */
strmbase_filter_init(&object->filter, NULL, &CLSID_DMOWrapperFilter, &filter_ops);
object->IDMOWrapperFilter_iface.lpVtbl = &dmo_wrapper_filter_vtbl;
object->input_buffer.IMediaBuffer_iface.lpVtbl = &buffer_vtbl;
TRACE("Created DMO wrapper %p.\n", object);
*out = &object->filter.IUnknown_inner;
return S_OK;
}