mpv/loader/dshow/outputpin.c

961 lines
28 KiB
C

/*
* Modified for use with MPlayer, detailed changelog at
* http://svn.mplayerhq.hu/mplayer/trunk/
* $Id$
*/
#include "wine/winerror.h"
#include "wine/windef.h"
#include "outputpin.h"
#include "mediatype.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
static inline int output_unimplemented(const char* s, void* p)
{
Debug printf("%s(%p) called (UNIMPLEMENTED)", s, p);
return E_NOTIMPL;
}
/**
An object beyond interface IEnumMediaTypes.
Returned by COutputPin through call IPin::EnumMediaTypes().
*/
typedef struct CEnumMediaTypes
{
IEnumMediaTypes_vt* vt;
DECLARE_IUNKNOWN();
AM_MEDIA_TYPE type;
GUID interfaces[2];
} CEnumMediaTypes;
/**
IMemOutput interface implementation
*/
struct _COutputMemPin
{
IMemInputPin_vt* vt;
DECLARE_IUNKNOWN();
char** frame_pointer;
long* frame_size_pointer;
MemAllocator* pAllocator;
COutputPin* parent;
};
/**
* \brief IEnumMediaTypes:Next (retrives a specified number of media types )
*
* \param[in] This pointer to CEnumMediaTypes object
* \param[in] cMediaTypes number of media types to retrive
* \param[out] ppMediaTypes array of AM_MEDIA_TYPE structure pointers of size cMediaTypes
* \param[out] pcFetched address of variables that receives number of returned media types
*
* \return S_OK - success
* \return S_FALSE - did not return as meny structures as requested
* \return E_INVALIDARG Invalid argument
* \return E_POINTER Null pointer
* \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
*
*/
static HRESULT STDCALL CEnumMediaTypes_Next(IEnumMediaTypes * This,
/* [in] */ ULONG cMediaTypes,
/* [size_is][out] */ AM_MEDIA_TYPE **ppMediaTypes,
/* [out] */ ULONG *pcFetched)
{
AM_MEDIA_TYPE* type = &((CEnumMediaTypes*)This)->type;
Debug printf("CEnumMediaTypes::Next(%p) called\n", This);
if (!ppMediaTypes)
return E_INVALIDARG;
if (!pcFetched && (cMediaTypes!=1))
return E_INVALIDARG;
if (cMediaTypes <= 0)
return 0;
if (pcFetched)
*pcFetched=1;
ppMediaTypes[0] = CreateMediaType(type);
if (cMediaTypes == 1)
return 0;
return 1;
}
/* I expect that these methods are unused. */
/**
* \brief IEnumMediaTypes::Skip (skips over a specified number of media types)
*
* \param[in] This pointer to CEnumMEdiaTypes object
* \param[in] cMediaTypes number of media types to skip
*
* \return S_OK - success
* \return S_FALSE - skipped past the end of the sequence
* \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
*
*/
static HRESULT STDCALL CEnumMediaTypes_Skip(IEnumMediaTypes * This,
/* [in] */ ULONG cMediaTypes)
{
return output_unimplemented("CEnumMediaTypes::Skip", This);
}
/**
* \brief IEnumMediaTypes::Reset (resets enumeration sequence to beginning)
*
* \param[in] This pointer to CEnumMEdiaTypes object
*
* \return S_OK - success
*
*/
static HRESULT STDCALL CEnumMediaTypes_Reset(IEnumMediaTypes * This)
{
Debug printf("CEnumMediaTypes::Reset(%p) called\n", This);
return 0;
}
/**
* \brief IEnumMediaTypes::Clone (makes a copy of enumerator, returned object
* starts at the same position as original)
*
* \param[in] This pointer to CEnumMEdiaTypes object
* \param[out] ppEnum address of variable that receives pointer to IEnumMediaTypes interface
*
* \return S_OK - success
* \return E_OUTOFMEMRY - Insufficient memory
* \return E_POINTER - Null pointer
* \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
*
*/
static HRESULT STDCALL CEnumMediaTypes_Clone(IEnumMediaTypes * This,
/* [out] */ IEnumMediaTypes **ppEnum)
{
Debug printf("CEnumMediaTypes::Clone(%p) called\n", This);
return E_NOTIMPL;
}
/**
* \brief CEnumMediaTypes destructor
*
* \param[in] This pointer to CEnumMediaTypes object
*
*/
static void CEnumMediaTypes_Destroy(CEnumMediaTypes* This)
{
FreeMediaType(&(This->type));
free(This->vt);
free(This);
}
// IEnumMediaTypes->IUnknown methods
IMPLEMENT_IUNKNOWN(CEnumMediaTypes)
/**
* \brief CEnumMediaTypes constructor
*
* \param[in] amt media type for enumerating
*
* \return pointer to CEnumMEdiaTypes object or NULL if error occured
*
*/
static CEnumMediaTypes* CEnumMediaTypesCreate(const AM_MEDIA_TYPE* amt)
{
CEnumMediaTypes *This = (CEnumMediaTypes*) malloc(sizeof(CEnumMediaTypes)) ;
if (!This)
return NULL;
This->vt = (IEnumMediaTypes_vt*) malloc(sizeof(IEnumMediaTypes_vt));
if (!This->vt)
{
free(This);
return NULL;
}
This->refcount = 1;
CopyMediaType(&(This->type),amt);
This->vt->QueryInterface = CEnumMediaTypes_QueryInterface;
This->vt->AddRef = CEnumMediaTypes_AddRef;
This->vt->Release = CEnumMediaTypes_Release;
This->vt->Next = CEnumMediaTypes_Next;
This->vt->Skip = CEnumMediaTypes_Skip;
This->vt->Reset = CEnumMediaTypes_Reset;
This->vt->Clone = CEnumMediaTypes_Clone;
This->interfaces[0] = IID_IUnknown;
This->interfaces[1] = IID_IEnumMediaTypes;
return This;
}
/*************
* COutputPin
*
* WARNING:
* This is implementation of INPUT pin in DirectShow's terms
*
*************/
/**
*
* \brief IUnknown::QueryInterface (query object for interface)
* \param[in] This pointer to IUnknown interface
* \param[in] iid GUID of requested interface
* \param[out] ppv receives pointer to interface
*
* \return S_OK - success (and *ppv contains valid pointer)
* \return E_NOINTERFACE - interface not found (and *ppv was set NULL)
*
* \note
* Make sure to call Release on received interface when you are done
*
*/
static HRESULT STDCALL COutputPin_QueryInterface(IUnknown* This, const GUID* iid, void** ppv)
{
COutputPin* p = (COutputPin*) This;
Debug printf("COutputPin_QueryInterface(%p) called\n", This);
if (!ppv)
return E_INVALIDARG;
if (memcmp(iid, &IID_IUnknown, 16) == 0)
{
*ppv = p;
p->vt->AddRef(This);
return 0;
}
if (memcmp(iid, &IID_IMemInputPin, 16) == 0)
{
*ppv = p->mempin;
p->mempin->vt->AddRef((IUnknown*)*ppv);
return 0;
}
Debug printf("Unknown interface : %08x-%04x-%04x-%02x%02x-"
"%02x%02x%02x%02x%02x%02x\n",
iid->f1, iid->f2, iid->f3,
(unsigned char)iid->f4[1], (unsigned char)iid->f4[0],
(unsigned char)iid->f4[2], (unsigned char)iid->f4[3],
(unsigned char)iid->f4[4], (unsigned char)iid->f4[5],
(unsigned char)iid->f4[6], (unsigned char)iid->f4[7]);
return E_NOINTERFACE;
}
// IPin methods
/**
* \brief IPin::Connect (connects pin to another pin)
*
* \param[in] This pointer to IPin interface
* \param[in] pReceivePin pointer to IPin interface of remote pin
* \param[in] pmt suggested media type for link. Can be NULL (any media type)
*
* \return S_OK - success.
* \return VFW_E_ALREADY_CONNECTED - pin already connected
* \return VFW_E_NOT_STOPPED - filter is active
* \return VFW_E_TYPE_NOT_ACCEPT - type is not acceptable
* \return Apropriate error code otherwise.
*
*/
static HRESULT STDCALL COutputPin_Connect(IPin * This,
/* [in] */ IPin *pReceivePin,
/* [in] */ /* const */ AM_MEDIA_TYPE *pmt)
{
Debug printf("COutputPin_Connect(%p) called\n",This);
/*
*pmt=((COutputPin*)This)->type;
if(pmt->cbFormat>0)
{
pmt->pbFormat=malloc(pmt->cbFormat);
memcpy(pmt->pbFormat, ((COutputPin*)This)->type.pbFormat, pmt->cbFormat);
}
*/
//return E_NOTIMPL;
return 0;// XXXXXXXXXXXXX CHECKME XXXXXXXXXXXXXXX
// if I put return 0; here, it crashes
}
/**
* \brief IPin::ReceiveConnection (accepts a connection from another pin)
*
* \param[in] This pointer to IPin interface
* \param[in] pConnector connecting pin's IPin interface
* \param[in] pmt suggested media type for connection
*
* \return S_OK - success
* \return E_POINTER - Null pointer
* \return VFW_E_ALREADY_CONNECTED - pin already connected
* \return VFW_E_NOT_STOPPED - filter is active
* \return VFW_E_TYPE_NOT_ACCEPT - type is not acceptable
*
* \note
* When returning S_OK method should also do the following:
* - store media type and return the same type in IPin::ConnectionMediaType
* - store pConnector and return it in IPin::ConnectedTo
*
*/
static HRESULT STDCALL COutputPin_ReceiveConnection(IPin * This,
/* [in] */ IPin *pConnector,
/* [in] */ const AM_MEDIA_TYPE *pmt)
{
Debug printf("COutputPin_ReceiveConnection(%p) called\n", This);
((COutputPin*)This)->remote = pConnector;
return 0;
}
/**
* \brief IPin::Disconnect (accepts a connection from another pin)
*
* \param[in] This pointer to IPin interface
*
* \return S_OK - success
* \return S_FALSE - pin was not connected
* \return VFW_E_NOT_STOPPED - filter is active
*
* \note
* To break connection you have to also call Disconnect on other pin
*/
static HRESULT STDCALL COutputPin_Disconnect(IPin * This)
{
Debug printf("COutputPin_Disconnect(%p) called\n", This);
return 1;
}
/**
* \brief IPin::ConnectedTo (retrieves pointer to the connected pin, if such exist)
*
* \param[in] This pointer to IPin interface
* \param[out] pPin pointer to remote pin's IPin interface
*
* \return S_OK - success
* \return E_POINTER - Null pointer
* \return VFW_E_NOT_CONNECTED - pin is not connected
*
* \note
* Caller must call Release on received IPin, when done
*/
static HRESULT STDCALL COutputPin_ConnectedTo(IPin * This,
/* [out] */ IPin **pPin)
{
Debug printf("COutputPin_ConnectedTo(%p) called\n", This);
if (!pPin)
return E_INVALIDARG;
*pPin = ((COutputPin*)This)->remote;
return 0;
}
/**
* \brief IPin::ConnectionMediaType (retrieves media type for connection, if such exist)
*
* \param[in] This pointer to IPin interface
* \param[out] pmt pointer to AM_MEDIA_TYPE, that receives connection media type
*
* \return S_OK - success
* \return E_POINTER - Null pointer
* \return VFW_E_NOT_CONNECTED - pin is not connected
*
*/
static HRESULT STDCALL COutputPin_ConnectionMediaType(IPin * This,
/* [out] */ AM_MEDIA_TYPE *pmt)
{
Debug printf("COutputPin_ConnectionMediaType(%p) called\n",This);
if (!pmt)
return E_INVALIDARG;
CopyMediaType(pmt,&(((COutputPin*)This)->type));
return 0;
}
/**
* \brief IPin::QueryPinInfo (retrieves information about the pin)
*
* \param[in] This pointer to IPin interface
* \param[out] pInfo pointer to PIN_INFO structure, that receives pin info
*
* \return S_OK - success
* \return E_POINTER - Null pointer
*
* \note
* If pInfo->pFilter is not NULL, then caller must call Release on pInfo->pFilter when done
*
*/
static HRESULT STDCALL COutputPin_QueryPinInfo(IPin * This,
/* [out] */ PIN_INFO *pInfo)
{
return output_unimplemented("COutputPin_QueryPinInfo", This);
}
/**
* \brief IPin::QueryDirection (retrieves pin direction)
*
* \param[in] This pointer to IPin interface
* \param[out] pPinDir pointer to variable, that receives pin direction (PINDIR_INPUT,PINDIR_OUTPUT)
*
* \return S_OK - success
* \return E_POINTER - Null pointer
*
*/
static HRESULT STDCALL COutputPin_QueryDirection(IPin * This,
/* [out] */ PIN_DIRECTION *pPinDir)
{
Debug printf("COutputPin_QueryDirection(%p) called\n", This);
if (!pPinDir)
return E_INVALIDARG;
*pPinDir = PINDIR_INPUT;
return 0;
}
/**
* \brief IPin::QueryId (retrieves pin identificator)
*
* \param[in] This pointer to IPin interface
* \param[out] Id adress of variable, that receives string with pin's Id.
*
* \return S_OK - success
* \return E_OUTOFMEMORY - Insufficient memory
* \return E_POINTER - Null pointer
*
* \note
* Pin's Id is not the same as pin's name
*
*/
static HRESULT STDCALL COutputPin_QueryId(IPin * This,
/* [out] */ LPWSTR *Id)
{
return output_unimplemented("COutputPin_QueryId", This);
}
/**
* \brief IPin::QueryAccept (determines can media type be accepted or not)
*
* \param[in] This pointer to IPin interface
* \param[in] pmt Media type to check
*
* \return S_OK - success
* \return S_FALSE - pin rejects media type
*
*/
static HRESULT STDCALL COutputPin_QueryAccept(IPin * This,
/* [in] */ const AM_MEDIA_TYPE *pmt)
{
return output_unimplemented("COutputPin_QueryAccept", This);
}
/**
* \brief IPin::EnumMediaTypes (enumerates the pin's preferred media types)
*
* \param[in] This pointer to IPin interface
* \param[out] ppEnum adress of variable that receives pointer to IEnumMEdiaTypes interface
*
* \return S_OK - success
* \return E_OUTOFMEMORY - Insufficient memory
* \return E_POINTER - Null pointer
*
* \note
* Caller must call Release on received interface when done
*
*/
static HRESULT STDCALL COutputPin_EnumMediaTypes(IPin * This,
/* [out] */ IEnumMediaTypes **ppEnum)
{
Debug printf("COutputPin_EnumMediaTypes(%p) called\n",This);
if (!ppEnum)
return E_INVALIDARG;
*ppEnum = (IEnumMediaTypes*) CEnumMediaTypesCreate(&((COutputPin*)This)->type);
return 0;
}
/**
* \brief IPin::QueryInternalConnections (retries pin's internal connections)
*
* \param[in] This pointer to IPin interface
* \param[out] apPin Array that receives pins, internally connected to this
* \param[in,out] nPint Size of an array
*
* \return S_OK - success
* \return S_FALSE - pin rejects media type
* \return E_NOTIMPL - not implemented
*
*/
static HRESULT STDCALL COutputPin_QueryInternalConnections(IPin * This,
/* [out] */ IPin **apPin,
/* [out][in] */ ULONG *nPin)
{
return output_unimplemented("COutputPin_QueryInternalConnections", This);
}
/**
* \brief IPin::EndOfStream (notifies pin, that no data is expected, until new run command)
*
* \param[in] This pointer to IPin interface
*
* \return S_OK - success
* \return E_UNEXPECTED - The pin is output pin
*
* \note
* IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
* IMemAllocator::GetBuffer runs in different (streaming) thread then other
* methods (application thread).
* IMemoryInputPin::NewSegment runs either in streaming or application thread.
* Developer must use critical sections for thread-safing work.
*
*/
static HRESULT STDCALL COutputPin_EndOfStream(IPin * This)
{
return output_unimplemented("COutputPin_EndOfStream", This);
}
/**
* \brief IPin::BeginFlush (begins a flush operation)
*
* \param[in] This pointer to IPin interface
*
* \return S_OK - success
* \return E_UNEXPECTED - The pin is output pin
*
*/
static HRESULT STDCALL COutputPin_BeginFlush(IPin * This)
{
return output_unimplemented("COutputPin_BeginFlush", This);
}
/**
* \brief IPin::EndFlush (ends a flush operation)
*
* \param[in] This pointer to IPin interface
*
* \return S_OK - success
* \return E_UNEXPECTED - The pin is output pin
*
*/
static HRESULT STDCALL COutputPin_EndFlush(IPin * This)
{
return output_unimplemented("COutputPin_EndFlush", This);
}
/**
* \brief IPin::NewSegment (media sample received after this call grouped as segment with common
* start,stop time and rate)
*
* \param[in] This pointer to IPin interface
* \param[in] tStart start time of new segment
* \param[in] tStop end time of new segment
* \param[in] dRate rate at wich segment should be processed
*
* \return S_OK - success
* \return E_UNEXPECTED - The pin is output pin
*
*/
static HRESULT STDCALL COutputPin_NewSegment(IPin * This,
/* [in] */ REFERENCE_TIME tStart,
/* [in] */ REFERENCE_TIME tStop,
/* [in] */ double dRate)
{
Debug printf("COutputPin_NewSegment(%Ld,%Ld,%f) called\n",
tStart, tStop, dRate);
return 0;
}
// IMemInputPin->IUnknown methods
/**
* \brief IUnknown::QueryInterface (query object for interface)
*
* \param[in] This pointer to IUnknown interface
* \param[in] iid GUID of requested interface
* \param[out] ppv receives pointer to interface
*
* \return S_OK - success (and *ppv contains valid pointer)
* \return E_NOINTERFACE - interface not found (and *ppv was set NULL)
*
* \note
* Make sure to call Release on received interface when you are done
*
*/
static HRESULT STDCALL COutputMemPin_QueryInterface(IUnknown* This, const GUID* iid, void** ppv)
{
COutputMemPin* p = (COutputMemPin*)This;
Debug printf("COutputMemPin_QueryInterface(%p) called\n", This);
if (!ppv)
return E_INVALIDARG;
if(!memcmp(iid, &IID_IUnknown, 16))
{
*ppv = p;
p->vt->AddRef(This);
return 0;
}
/*if(!memcmp(iid, &IID_IPin, 16))
{
COutputPin* ptr=(COutputPin*)(This-1);
*ppv=(void*)ptr;
AddRef((IUnknown*)ptr);
return 0;
}*/
if(!memcmp(iid, &IID_IMemInputPin, 16))
{
*ppv = p;
p->vt->AddRef(This);
return 0;
}
Debug printf("Unknown interface : %08x-%04x-%04x-%02x%02x-" \
"%02x%02x%02x%02x%02x%02x\n",
iid->f1, iid->f2, iid->f3,
(unsigned char)iid->f4[1], (unsigned char)iid->f4[0],
(unsigned char)iid->f4[2], (unsigned char)iid->f4[3],
(unsigned char)iid->f4[4], (unsigned char)iid->f4[5],
(unsigned char)iid->f4[6], (unsigned char)iid->f4[7]);
return E_NOINTERFACE;
}
// IMemInputPin methods
/**
* \brief IMemInputPin::GetAllocator (retrives memory allocator, proposed by pin)
*
* \param[in] This pointer to IMemInputPin interface
* \param[out] ppAllocator address of variable that receives allocator's IMemAllocator interface
*
* \return S_OK - success
* \return VFW_E_NO_ALLOCATOR - No allocator
*
* \note
* Make sure to call Release on received interface when you are done
*
*/
static HRESULT STDCALL COutputMemPin_GetAllocator(IMemInputPin* This,
/* [out] */ IMemAllocator** ppAllocator)
{
Debug printf("COutputMemPin_GetAllocator(%p, %p) called\n", This->vt, ppAllocator);
*ppAllocator = (IMemAllocator*) MemAllocatorCreate();
return 0;
}
/**
*
* \brief IMemInputPin::NotifyAllocator (specifies an allocator for the connection)
*
* \param[in] This pointer to IMemInputPin interface
* \param[in] pAllocator allocator's IMemAllocator interface
* \param[in] bReadOnly specifies whether samples from allocator are readonly
*
* \return S_OK - success
* \return Apropriate error code otherwise
*
*/
static HRESULT STDCALL COutputMemPin_NotifyAllocator(IMemInputPin* This,
/* [in] */ IMemAllocator* pAllocator,
/* [in] */ int bReadOnly)
{
Debug printf("COutputMemPin_NotifyAllocator(%p, %p) called\n", This, pAllocator);
((COutputMemPin*)This)->pAllocator = (MemAllocator*) pAllocator;
return 0;
}
/**
* \brief IMemInputPin::GetAllocatorRequirements (retrieves allocator properties requested by
* input pin)
*
* \param[in] This pointer to IMemInputPin interface
* \param[out] pProps pointer to a structure that receives allocator properties
*
* \return S_OK - success
* \return E_NOTIMPL - Not implemented
* \return E_POINTER - Null pointer
*
*/
static HRESULT STDCALL COutputMemPin_GetAllocatorRequirements(IMemInputPin* This,
/* [out] */ ALLOCATOR_PROPERTIES* pProps)
{
return output_unimplemented("COutputMemPin_GetAllocatorRequirements", This);
}
/**
* \brief IMemInputPin::Receive (receives the next media sample int thre stream)
*
* \param[in] This pointer to IMemInputPin interface
* \param[in] pSample pointer to sample's IMediaSample interface
*
* \return S_OK - success
* \return S_FALSE - The sample was rejected
* \return E_POINTER - Null pointer
* \return VFW_E_INVALIDMEDIATYPE - invalid media type
* \return VFW_E_RUNTIME_ERROR - run-time error occured
* \return VFW_E_WRONG_STATE - pin is stopped
*
* \remarks
* Method san do on of the following:
* - reject sample
* - accept sample and process it in another thread
* - accept sample and process it before returning
*
* In second case method should increase reference count for sample (through AddRef)
* In the last case method might block indefinitely. If this might
* happen IMemInpuPin::ReceiveCAnBlock returns S_OK
*
* \note
* IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
* IMemAllocator::GetBuffer runs in different (streaming) thread then other
* methods (application thread).
* IMemoryInputPin::NewSegment runs either in streaming or application thread.
* Developer must use critical sections for thread-safing work.
*
*/
static HRESULT STDCALL COutputMemPin_Receive(IMemInputPin* This,
/* [in] */ IMediaSample* pSample)
{
Debug printf("COutputMemPin_Receive(%p) called\n", This);
if (!pSample)
return E_INVALIDARG;
if(((COutputMemPin*)This)->parent->SampleProc)
return ((COutputMemPin*)This)->parent->SampleProc(((COutputMemPin*)This)->parent->pUserData,pSample);
//reject sample
return S_FALSE;
}
/**
* \brief IMemInputPin::ReceiveMultiple (receives multiple samples in the stream)
*
* \param[in] This pointer to IMemInputPin interface
* \param[in] pSamples pointer to array with samples
* \param[in] nSamples number of samples in array
* \param[out] nSamplesProcessed number of processed samples
*
* \return S_OK - success
* \return S_FALSE - The sample was rejected
* \return E_POINTER - Null pointer
* \return VFW_E_INVALIDMEDIATYPE - invalid media type
* \return VFW_E_RUNTIME_ERROR - run-time error occured
* \return VFW_E_WRONG_STATE - pin is stopped
*
* \remarks
* This method behaves like IMemInputPin::Receive but for array of samples
*
* \note
* IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
* IMemAllocator::GetBuffer runs in different (streaming) thread then other
* methods (application thread).
* IMemoryInputPin::NewSegment runs either in streaming or application thread.
* Developer must use critical sections for thread-safing work.
*
*/
static HRESULT STDCALL COutputMemPin_ReceiveMultiple(IMemInputPin * This,
/* [size_is][in] */ IMediaSample **pSamples,
/* [in] */ long nSamples,
/* [out] */ long *nSamplesProcessed)
{
HRESULT hr;
Debug printf("COutputMemPin_ReceiveMultiple(%p) %d\n", This,nSamples);
for(*nSamplesProcessed=0; *nSamplesProcessed < nSamples; *nSamplesProcessed++) {
hr = This->vt->Receive(This,pSamples[*nSamplesProcessed]);
if (hr != S_OK) break;
}
return hr;
}
/**
* \brief IMemInputPin::ReceiveCanBlock (determines whether IMemInputPin:::Receive might block)
*
* \param[in] This pointer to IMemInputPin interface
*
* \return S_OK - the pin might block
* \return S_FALSE - the pin will not block
*
*/
static HRESULT STDCALL COutputMemPin_ReceiveCanBlock(IMemInputPin * This)
{
return output_unimplemented("COutputMemPin_ReceiveCanBlock", This);
}
/**
* \brief COutputPin::SetNewFormat(sets new media format for the pin)
*
* \param[in] This pointer to COutputPin class
* \param[in] amt new media format
*
*/
static void COutputPin_SetNewFormat(COutputPin* This, const AM_MEDIA_TYPE* amt)
{
CopyMediaType(&(This->type),amt);
}
/**
* \brief COutputPin destructor
*
* \param[in] This pointer to COutputPin class
*
*/
static void COutputPin_Destroy(COutputPin* This)
{
if (This->mempin->vt)
free(This->mempin->vt);
if (This->mempin)
free(This->mempin);
if (This->vt)
free(This->vt);
FreeMediaType(&(This->type));
free(This);
}
/**
* \brief IUnknown::AddRef (increases reference counter for interface)
*
* \param[in] This pointer to IUnknown class
*
* \return new value of reference counter
*
* \remarks
* Return value should be used only for debug purposes
*
*/
static HRESULT STDCALL COutputPin_AddRef(IUnknown* This)
{
Debug printf("COutputPin_AddRef(%p) called (%d)\n", This, ((COutputPin*)This)->refcount);
((COutputPin*)This)->refcount++;
return 0;
}
/**
* \brief IUnknown::Release (desreases reference counter for interface)
*
* \param[in] This pointer to IUnknown class
*
* \return new value of reference counter
*
* \remarks
* When reference counter reaches zero calls destructor
* Return value should be used only for debug purposes
*
*/
static HRESULT STDCALL COutputPin_Release(IUnknown* This)
{
Debug printf("COutputPin_Release(%p) called (%d)\n", This, ((COutputPin*)This)->refcount);
if (--((COutputPin*)This)->refcount <= 0)
COutputPin_Destroy((COutputPin*)This);
return 0;
}
/**
* \brief IUnknown::AddRef (increases reference counter for interface)
*
* \param[in] This pointer to IUnknown class
*
* \return new value of reference counter
*
* \remarks
* Return value should be used only for debug purposes
*
*/
static HRESULT STDCALL COutputMemPin_AddRef(IUnknown* This)
{
COutputMemPin* p = (COutputMemPin*) This;
Debug printf("COutputMemPin_AddRef(%p) called (%p, %d)\n", p, p->parent, p->parent->refcount);
p->parent->refcount++;
return 0;
}
/**
* \brief IUnknown::Release (desreases reference counter for interface)
*
* \param[in] This pointer to IUnknown class
*
* \return new value of reference counter
*
* \remarks
* When reference counter reaches zero calls destructor
* Return value should be used only for debug purposes
*
*/
static HRESULT STDCALL COutputMemPin_Release(IUnknown* This)
{
COutputMemPin* p = (COutputMemPin*) This;
Debug printf("COutputMemPin_Release(%p) called (%p, %d)\n",
p, p->parent, p->parent->refcount);
if (--p->parent->refcount <= 0)
COutputPin_Destroy(p->parent);
return 0;
}
/**
* \brief COutputPin constructor
*
* \param[in] amt media type for pin
*
* \return pointer to COutputPin if success
* \return NULL if error occured
*
*/
COutputPin* COutputPinCreate(const AM_MEDIA_TYPE* amt,SAMPLEPROC SampleProc,void* pUserData)
{
COutputPin* This = (COutputPin*) malloc(sizeof(COutputPin));
IMemInputPin_vt* ivt;
if (!This)
return NULL;
This->vt = (IPin_vt*) malloc(sizeof(IPin_vt));
This->mempin = (COutputMemPin*) malloc(sizeof(COutputMemPin));
ivt = (IMemInputPin_vt*) malloc(sizeof(IMemInputPin_vt));
if (!This->vt || !This->mempin || !ivt)
{
COutputPin_Destroy(This);
return NULL;
}
This->SampleProc=SampleProc;
This->pUserData=pUserData;
This->mempin->vt = ivt;
This->refcount = 1;
This->remote = 0;
CopyMediaType(&(This->type),amt);
This->vt->QueryInterface = COutputPin_QueryInterface;
This->vt->AddRef = COutputPin_AddRef;
This->vt->Release = COutputPin_Release;
This->vt->Connect = COutputPin_Connect;
This->vt->ReceiveConnection = COutputPin_ReceiveConnection;
This->vt->Disconnect = COutputPin_Disconnect;
This->vt->ConnectedTo = COutputPin_ConnectedTo;
This->vt->ConnectionMediaType = COutputPin_ConnectionMediaType;
This->vt->QueryPinInfo = COutputPin_QueryPinInfo;
This->vt->QueryDirection = COutputPin_QueryDirection;
This->vt->QueryId = COutputPin_QueryId;
This->vt->QueryAccept = COutputPin_QueryAccept;
This->vt->EnumMediaTypes = COutputPin_EnumMediaTypes;
This->vt->QueryInternalConnections = COutputPin_QueryInternalConnections;
This->vt->EndOfStream = COutputPin_EndOfStream;
This->vt->BeginFlush = COutputPin_BeginFlush;
This->vt->EndFlush = COutputPin_EndFlush;
This->vt->NewSegment = COutputPin_NewSegment;
This->mempin->vt->QueryInterface = COutputMemPin_QueryInterface;
This->mempin->vt->AddRef = COutputMemPin_AddRef;
This->mempin->vt->Release = COutputMemPin_Release;
This->mempin->vt->GetAllocator = COutputMemPin_GetAllocator;
This->mempin->vt->NotifyAllocator = COutputMemPin_NotifyAllocator;
This->mempin->vt->GetAllocatorRequirements = COutputMemPin_GetAllocatorRequirements;
This->mempin->vt->Receive = COutputMemPin_Receive;
This->mempin->vt->ReceiveMultiple = COutputMemPin_ReceiveMultiple;
This->mempin->vt->ReceiveCanBlock = COutputMemPin_ReceiveCanBlock;
This->mempin->frame_size_pointer = 0;
This->mempin->frame_pointer = 0;
This->mempin->pAllocator = 0;
This->mempin->refcount = 1;
This->mempin->parent = This;
This->SetNewFormat = COutputPin_SetNewFormat;
return This;
}