Sweden-Number/dlls/qcap/smartteefilter.c

343 lines
11 KiB
C

/*
* Implementation of the SmartTee filter
*
* Copyright 2015 Damjan Jovanovic
*
* 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 "qcap_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(qcap);
typedef struct {
struct strmbase_filter filter;
struct strmbase_sink sink;
struct strmbase_source capture, preview;
} SmartTeeFilter;
static inline SmartTeeFilter *impl_from_strmbase_filter(struct strmbase_filter *filter)
{
return CONTAINING_RECORD(filter, SmartTeeFilter, filter);
}
static inline SmartTeeFilter *impl_from_strmbase_pin(struct strmbase_pin *pin)
{
return impl_from_strmbase_filter(pin->filter);
}
static struct strmbase_pin *smart_tee_get_pin(struct strmbase_filter *iface, unsigned int index)
{
SmartTeeFilter *filter = impl_from_strmbase_filter(iface);
if (index == 0)
return &filter->sink.pin;
else if (index == 1)
return &filter->capture.pin;
else if (index == 2)
return &filter->preview.pin;
return NULL;
}
static void smart_tee_destroy(struct strmbase_filter *iface)
{
SmartTeeFilter *filter = impl_from_strmbase_filter(iface);
strmbase_sink_cleanup(&filter->sink);
strmbase_source_cleanup(&filter->capture);
strmbase_source_cleanup(&filter->preview);
strmbase_filter_cleanup(&filter->filter);
free(filter);
}
static HRESULT smart_tee_wait_state(struct strmbase_filter *iface, DWORD timeout)
{
return iface->state == State_Paused ? VFW_S_CANT_CUE : S_OK;
}
static const struct strmbase_filter_ops filter_ops =
{
.filter_get_pin = smart_tee_get_pin,
.filter_destroy = smart_tee_destroy,
.filter_wait_state = smart_tee_wait_state,
};
static HRESULT sink_query_accept(struct strmbase_pin *base, const AM_MEDIA_TYPE *pmt)
{
SmartTeeFilter *This = impl_from_strmbase_pin(base);
TRACE("(%p, AM_MEDIA_TYPE(%p))\n", This, pmt);
if (!pmt)
return VFW_E_TYPE_NOT_ACCEPTED;
/* We'll take any media type, but the output pins will later
* struggle to connect downstream. */
return S_OK;
}
static HRESULT sink_get_media_type(struct strmbase_pin *base,
unsigned int iPosition, AM_MEDIA_TYPE *amt)
{
SmartTeeFilter *This = impl_from_strmbase_pin(base);
HRESULT hr;
TRACE("(%p)->(%d, %p)\n", This, iPosition, amt);
if (iPosition)
return S_FALSE;
EnterCriticalSection(&This->filter.filter_cs);
if (This->sink.pin.peer)
{
CopyMediaType(amt, &This->sink.pin.mt);
hr = S_OK;
}
else
hr = S_FALSE;
LeaveCriticalSection(&This->filter.filter_cs);
return hr;
}
static HRESULT sink_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
SmartTeeFilter *filter = impl_from_strmbase_pin(iface);
if (IsEqualGUID(iid, &IID_IMemInputPin))
*out = &filter->sink.IMemInputPin_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static HRESULT copy_sample(IMediaSample *inputSample, IMemAllocator *allocator, IMediaSample **pOutputSample)
{
REFERENCE_TIME startTime, endTime;
BOOL haveStartTime = TRUE, haveEndTime = TRUE;
IMediaSample *outputSample = NULL;
BYTE *ptrIn, *ptrOut;
AM_MEDIA_TYPE *mediaType = NULL;
HRESULT hr;
hr = IMediaSample_GetTime(inputSample, &startTime, &endTime);
if (hr == S_OK)
;
else if (hr == VFW_S_NO_STOP_TIME)
haveEndTime = FALSE;
else if (hr == VFW_E_SAMPLE_TIME_NOT_SET)
haveStartTime = haveEndTime = FALSE;
else
goto end;
hr = IMemAllocator_GetBuffer(allocator, &outputSample,
haveStartTime ? &startTime : NULL, haveEndTime ? &endTime : NULL, 0);
if (FAILED(hr)) goto end;
if (IMediaSample_GetSize(outputSample) < IMediaSample_GetActualDataLength(inputSample)) {
ERR("insufficient space in sample\n");
hr = VFW_E_BUFFER_OVERFLOW;
goto end;
}
hr = IMediaSample_SetTime(outputSample, haveStartTime ? &startTime : NULL, haveEndTime ? &endTime : NULL);
if (FAILED(hr)) goto end;
hr = IMediaSample_GetPointer(inputSample, &ptrIn);
if (FAILED(hr)) goto end;
hr = IMediaSample_GetPointer(outputSample, &ptrOut);
if (FAILED(hr)) goto end;
memcpy(ptrOut, ptrIn, IMediaSample_GetActualDataLength(inputSample));
IMediaSample_SetActualDataLength(outputSample, IMediaSample_GetActualDataLength(inputSample));
hr = IMediaSample_SetDiscontinuity(outputSample, IMediaSample_IsDiscontinuity(inputSample) == S_OK);
if (FAILED(hr)) goto end;
haveStartTime = haveEndTime = TRUE;
hr = IMediaSample_GetMediaTime(inputSample, &startTime, &endTime);
if (hr == S_OK)
;
else if (hr == VFW_S_NO_STOP_TIME)
haveEndTime = FALSE;
else if (hr == VFW_E_MEDIA_TIME_NOT_SET)
haveStartTime = haveEndTime = FALSE;
else
goto end;
hr = IMediaSample_SetMediaTime(outputSample, haveStartTime ? &startTime : NULL, haveEndTime ? &endTime : NULL);
if (FAILED(hr)) goto end;
hr = IMediaSample_GetMediaType(inputSample, &mediaType);
if (FAILED(hr)) goto end;
if (hr == S_OK) {
hr = IMediaSample_SetMediaType(outputSample, mediaType);
if (FAILED(hr)) goto end;
}
hr = IMediaSample_SetPreroll(outputSample, IMediaSample_IsPreroll(inputSample) == S_OK);
if (FAILED(hr)) goto end;
hr = IMediaSample_SetSyncPoint(outputSample, IMediaSample_IsSyncPoint(inputSample) == S_OK);
if (FAILED(hr)) goto end;
end:
if (mediaType)
DeleteMediaType(mediaType);
if (FAILED(hr) && outputSample) {
IMediaSample_Release(outputSample);
outputSample = NULL;
}
*pOutputSample = outputSample;
return hr;
}
static HRESULT WINAPI SmartTeeFilterInput_Receive(struct strmbase_sink *base, IMediaSample *inputSample)
{
SmartTeeFilter *This = impl_from_strmbase_pin(&base->pin);
IMediaSample *captureSample = NULL;
IMediaSample *previewSample = NULL;
HRESULT hrCapture = VFW_E_NOT_CONNECTED, hrPreview = VFW_E_NOT_CONNECTED;
TRACE("(%p)->(%p)\n", This, inputSample);
/* Modifying the image coming out of one pin doesn't modify the image
* coming out of the other. MSDN claims the filter doesn't copy,
* but unless it somehow uses copy-on-write, I just don't see how
* that's possible. */
/* FIXME: we should ideally do each of these in a separate thread */
EnterCriticalSection(&This->filter.filter_cs);
if (This->capture.pin.peer)
hrCapture = copy_sample(inputSample, This->capture.pAllocator, &captureSample);
LeaveCriticalSection(&This->filter.filter_cs);
if (SUCCEEDED(hrCapture) && This->capture.pMemInputPin)
hrCapture = IMemInputPin_Receive(This->capture.pMemInputPin, captureSample);
if (captureSample)
IMediaSample_Release(captureSample);
EnterCriticalSection(&This->filter.filter_cs);
if (This->preview.pin.peer)
hrPreview = copy_sample(inputSample, This->preview.pAllocator, &previewSample);
LeaveCriticalSection(&This->filter.filter_cs);
/* No timestamps on preview stream: */
if (SUCCEEDED(hrPreview))
hrPreview = IMediaSample_SetTime(previewSample, NULL, NULL);
if (SUCCEEDED(hrPreview) && This->preview.pMemInputPin)
hrPreview = IMemInputPin_Receive(This->preview.pMemInputPin, previewSample);
if (previewSample)
IMediaSample_Release(previewSample);
/* FIXME: how to merge the HRESULTs from the 2 pins? */
if (SUCCEEDED(hrCapture))
return hrCapture;
else
return hrPreview;
}
static const struct strmbase_sink_ops sink_ops =
{
.base.pin_query_accept = sink_query_accept,
.base.pin_get_media_type = sink_get_media_type,
.base.pin_query_interface = sink_query_interface,
.pfnReceive = SmartTeeFilterInput_Receive,
};
static HRESULT capture_query_accept(struct strmbase_pin *base, const AM_MEDIA_TYPE *amt)
{
FIXME("(%p) stub\n", base);
return S_OK;
}
static HRESULT source_get_media_type(struct strmbase_pin *iface,
unsigned int index, AM_MEDIA_TYPE *mt)
{
SmartTeeFilter *filter = impl_from_strmbase_pin(iface);
HRESULT hr = S_OK;
EnterCriticalSection(&filter->filter.filter_cs);
if (!filter->sink.pin.peer)
hr = VFW_E_NOT_CONNECTED;
else if (!index)
CopyMediaType(mt, &filter->sink.pin.mt);
else
hr = VFW_S_NO_MORE_ITEMS;
LeaveCriticalSection(&filter->filter.filter_cs);
return hr;
}
static HRESULT WINAPI SmartTeeFilterCapture_DecideAllocator(struct strmbase_source *base,
IMemInputPin *pPin, IMemAllocator **pAlloc)
{
SmartTeeFilter *This = impl_from_strmbase_pin(&base->pin);
TRACE("(%p, %p, %p)\n", This, pPin, pAlloc);
*pAlloc = This->sink.pAllocator;
IMemAllocator_AddRef(This->sink.pAllocator);
return IMemInputPin_NotifyAllocator(pPin, This->sink.pAllocator, TRUE);
}
static const struct strmbase_source_ops capture_ops =
{
.base.pin_query_accept = capture_query_accept,
.base.pin_get_media_type = source_get_media_type,
.pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
.pfnDecideAllocator = SmartTeeFilterCapture_DecideAllocator,
};
static HRESULT preview_query_accept(struct strmbase_pin *base, const AM_MEDIA_TYPE *amt)
{
FIXME("(%p) stub\n", base);
return S_OK;
}
static HRESULT WINAPI SmartTeeFilterPreview_DecideAllocator(struct strmbase_source *base,
IMemInputPin *pPin, IMemAllocator **pAlloc)
{
SmartTeeFilter *This = impl_from_strmbase_pin(&base->pin);
TRACE("(%p, %p, %p)\n", This, pPin, pAlloc);
*pAlloc = This->sink.pAllocator;
IMemAllocator_AddRef(This->sink.pAllocator);
return IMemInputPin_NotifyAllocator(pPin, This->sink.pAllocator, TRUE);
}
static const struct strmbase_source_ops preview_ops =
{
.base.pin_query_accept = preview_query_accept,
.base.pin_get_media_type = source_get_media_type,
.pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
.pfnDecideAllocator = SmartTeeFilterPreview_DecideAllocator,
};
HRESULT smart_tee_create(IUnknown *outer, IUnknown **out)
{
SmartTeeFilter *object;
HRESULT hr;
if (!(object = calloc(1, sizeof(*object))))
return E_OUTOFMEMORY;
strmbase_filter_init(&object->filter, outer, &CLSID_SmartTee, &filter_ops);
strmbase_sink_init(&object->sink, &object->filter, L"Input", &sink_ops, NULL);
hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER,
&IID_IMemAllocator, (void **)&object->sink.pAllocator);
if (FAILED(hr))
{
strmbase_filter_cleanup(&object->filter);
free(object);
return hr;
}
strmbase_source_init(&object->capture, &object->filter, L"Capture", &capture_ops);
strmbase_source_init(&object->preview, &object->filter, L"Preview", &preview_ops);
TRACE("Created smart tee %p.\n", object);
*out = &object->filter.IUnknown_inner;
return S_OK;
}