Sweden-Number/dlls/qcap/pin.c

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2005-05-18 17:34:04 +02:00
/*
* Generic Implementation of IPin Interface
*
* Copyright 2003 Robert Shearman
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "wtypes.h"
#include "wingdi.h"
#include "winuser.h"
#include "dshow.h"
#include "qcap_main.h"
#include "pin.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "uuids.h"
#include "vfwmsgs.h"
#include <assert.h>
WINE_DEFAULT_DEBUG_CHANNEL(qcap);
#define ALIGNDOWN(value,boundary) ((value) & ~(boundary-1))
#define ALIGNUP(value,boundary) (ALIGNDOWN(value - 1, boundary) + boundary)
static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
{
/* Tempting to just do a memcpy, but the name field is
128 characters long! We will probably never exceed 10
most of the time, so we are better off copying
each field manually */
strcpyW(pDest->achName, pSrc->achName);
pDest->dir = pSrc->dir;
pDest->pFilter = pSrc->pFilter;
}
HRESULT WINAPI IPinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
{
HRESULT hr;
IPinImpl *This = (IPinImpl *)iface;
/* TRACE("(%p)\n", ppPin);*/
EnterCriticalSection(This->pCritSec);
{
if (This->pConnectedTo)
{
*ppPin = This->pConnectedTo;
IPin_AddRef(*ppPin);
hr = S_OK;
}
else
hr = VFW_E_NOT_CONNECTED;
}
LeaveCriticalSection(This->pCritSec);
return hr;
}
HRESULT WINAPI IPinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
{
HRESULT hr;
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
EnterCriticalSection(This->pCritSec);
{
if (This->pConnectedTo)
{
CopyMediaType(pmt, &This->mtCurrent);
hr = S_OK;
}
else
{
ZeroMemory(pmt, sizeof(*pmt));
hr = VFW_E_NOT_CONNECTED;
}
}
LeaveCriticalSection(This->pCritSec);
return hr;
}
HRESULT WINAPI IPinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
{
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
Copy_PinInfo(pInfo, &This->pinInfo);
IBaseFilter_AddRef(pInfo->pFilter);
return S_OK;
}
HRESULT WINAPI IPinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
{
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
*pPinDir = This->pinInfo.dir;
return S_OK;
}
HRESULT WINAPI IPinImpl_QueryId(IPin * iface, LPWSTR * Id)
{
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p)\n", This, iface, Id);
*Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
if (!Id)
return E_OUTOFMEMORY;
strcpyW(*Id, This->pinInfo.achName);
return S_OK;
}
HRESULT WINAPI IPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
{
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
if (!This->fnQueryAccept) return S_OK;
return (This->fnQueryAccept(This->pUserData, pmt) == S_OK ? S_OK : S_FALSE);
}
HRESULT WINAPI IPinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
{
IPinImpl *This = (IPinImpl *)iface;
TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
}
/* Function called as a helper to IPin_Connect */
/* specific AM_MEDIA_TYPE - it cannot be NULL */
/* NOTE: not part of standard interface */
static HRESULT OutputPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
{
OutputPin *This = (OutputPin *)iface;
HRESULT hr;
IMemAllocator * pMemAlloc = NULL;
ALLOCATOR_PROPERTIES actual; /* FIXME: should we put the actual props back in to This? */
TRACE("(%p, %p)\n", pReceivePin, pmt);
dump_AM_MEDIA_TYPE(pmt);
/* FIXME: call queryacceptproc */
This->pin.pConnectedTo = pReceivePin;
IPin_AddRef(pReceivePin);
CopyMediaType(&This->pin.mtCurrent, pmt);
hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
/* get the IMemInputPin interface we will use to deliver samples to the
* connected pin */
if (SUCCEEDED(hr))
{
hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
if (SUCCEEDED(hr))
hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pMemAlloc);
if (hr == VFW_E_NO_ALLOCATOR)
{
/* Input pin provides no allocator, use standard memory allocator */
hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)&pMemAlloc);
if (SUCCEEDED(hr))
{
hr = IMemInputPin_NotifyAllocator(This->pMemInputPin, pMemAlloc, FALSE);
}
}
if (SUCCEEDED(hr))
hr = IMemAllocator_SetProperties(pMemAlloc, &This->allocProps, &actual);
if (pMemAlloc)
IMemAllocator_Release(pMemAlloc);
/* break connection if we couldn't get the allocator */
if (FAILED(hr))
IPin_Disconnect(pReceivePin);
}
if (FAILED(hr))
{
IPin_Release(This->pin.pConnectedTo);
This->pin.pConnectedTo = NULL;
DeleteMediaType(&This->pin.mtCurrent);
}
TRACE(" -- %lx\n", hr);
return hr;
}
HRESULT OutputPin_Init(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES * props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, OutputPin * pPinImpl)
{
TRACE("\n");
/* Common attributes */
pPinImpl->pin.refCount = 1;
pPinImpl->pin.pConnectedTo = NULL;
pPinImpl->pin.fnQueryAccept = pQueryAccept;
pPinImpl->pin.pUserData = pUserData;
pPinImpl->pin.pCritSec = pCritSec;
Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
/* Output pin attributes */
pPinImpl->pMemInputPin = NULL;
pPinImpl->pConnectSpecific = OutputPin_ConnectSpecific;
if (props)
{
memcpy(&pPinImpl->allocProps, props, sizeof(pPinImpl->allocProps));
if (pPinImpl->allocProps.cbAlign == 0)
pPinImpl->allocProps.cbAlign = 1;
}
else
ZeroMemory(&pPinImpl->allocProps, sizeof(pPinImpl->allocProps));
return S_OK;
}
HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
{
HRESULT hr;
OutputPin *This = (OutputPin *)iface;
TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
dump_AM_MEDIA_TYPE(pmt);
/* If we try to connect to ourself, we will definitely deadlock.
* There are other cases where we could deadlock too, but this
* catches the obvious case */
assert(pReceivePin != iface);
EnterCriticalSection(This->pin.pCritSec);
{
/* if we have been a specific type to connect with, then we can either connect
* with that or fail. We cannot choose different AM_MEDIA_TYPE */
if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
hr = This->pConnectSpecific(iface, pReceivePin, pmt);
else
{
/* negotiate media type */
IEnumMediaTypes * pEnumCandidates;
AM_MEDIA_TYPE * pmtCandidate; /* Candidate media type */
if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
{
hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
/* try this filter's media types first */
while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
{
if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
(This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
{
hr = S_OK;
TRACE("o_o\n");
DeleteMediaType(pmtCandidate);
break;
}
DeleteMediaType(pmtCandidate);
}
IEnumMediaTypes_Release(pEnumCandidates);
}
/* then try receiver filter's media types */
if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
{
hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
{
if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
(This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
{
hr = S_OK;
DeleteMediaType(pmtCandidate);
break;
}
DeleteMediaType(pmtCandidate);
} /* while */
IEnumMediaTypes_Release(pEnumCandidates);
} /* if not found */
} /* if negotiate media type */
} /* if succeeded */
LeaveCriticalSection(This->pin.pCritSec);
TRACE(" -- %lx\n", hr);
return hr;
}
HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
{
ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
return E_UNEXPECTED;
}
HRESULT WINAPI OutputPin_Disconnect(IPin * iface)
{
HRESULT hr;
OutputPin *This = (OutputPin *)iface;
TRACE("()\n");
EnterCriticalSection(This->pin.pCritSec);
{
if (This->pMemInputPin)
{
IMemInputPin_Release(This->pMemInputPin);
This->pMemInputPin = NULL;
}
if (This->pin.pConnectedTo)
{
IPin_Release(This->pin.pConnectedTo);
This->pin.pConnectedTo = NULL;
hr = S_OK;
}
else
hr = S_FALSE;
}
LeaveCriticalSection(This->pin.pCritSec);
return hr;
}
HRESULT OutputPin_GetDeliveryBuffer(OutputPin * This, IMediaSample ** ppSample, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, DWORD dwFlags)
{
HRESULT hr;
TRACE("(%p, %p, %p, %lx)\n", ppSample, tStart, tStop, dwFlags);
EnterCriticalSection(This->pin.pCritSec);
{
if (!This->pin.pConnectedTo)
hr = VFW_E_NOT_CONNECTED;
else
{
IMemAllocator * pAlloc = NULL;
hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
if (SUCCEEDED(hr))
hr = IMemAllocator_GetBuffer(pAlloc, ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop, dwFlags);
if (SUCCEEDED(hr))
hr = IMediaSample_SetTime(*ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop);
if (pAlloc)
IMemAllocator_Release(pAlloc);
}
}
LeaveCriticalSection(This->pin.pCritSec);
return hr;
}
HRESULT OutputPin_SendSample(OutputPin * This, IMediaSample * pSample)
{
HRESULT hr = S_OK;
IMemInputPin * pMemConnected = NULL;
EnterCriticalSection(This->pin.pCritSec);
{
if (!This->pin.pConnectedTo || !This->pMemInputPin)
hr = VFW_E_NOT_CONNECTED;
else
{
/* we don't have the lock held when using This->pMemInputPin,
* so we need to AddRef it to stop it being deleted while we are
* using it. */
pMemConnected = This->pMemInputPin;
IMemInputPin_AddRef(pMemConnected);
}
}
LeaveCriticalSection(This->pin.pCritSec);
if (SUCCEEDED(hr))
{
/* NOTE: if we are in a critical section when Receive is called
* then it causes some problems (most notably with the native Video
* Renderer) if we are re-entered for whatever reason */
hr = IMemInputPin_Receive(pMemConnected, pSample);
IMemInputPin_Release(pMemConnected);
}
return hr;
}