outputpin.c

linux下的MPEG1

#include "../wine/winerror.h"
#include "../wine/windef.h"
#include "outputpin.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

/*
    An object beyond interface IEnumMediaTypes.
    Returned by COutputPin through call IPin::EnumMediaTypes().
*/

static inline int output_unimplemented(const char* s, void* p)
{
    Debug printf("%s(%p) called (UNIMPLEMENTED)", s, p);
    return E_NOTIMPL;
}

typedef struct CEnumMediaTypes
{
    IEnumMediaTypes_vt* vt;
    DECLARE_IUNKNOWN();
    AM_MEDIA_TYPE type;
    GUID interfaces[2];
} CEnumMediaTypes;

struct _COutputMemPin
{
    IMemInputPin_vt* vt;
    DECLARE_IUNKNOWN();
    char** frame_pointer;
    long* frame_size_pointer;
    MemAllocator* pAllocator;
    COutputPin* parent;
};

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] = (AM_MEDIA_TYPE *)CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
    // copy structures - C can handle this...
    **ppMediaTypes = *type;
    if (ppMediaTypes[0]->pbFormat)
    {
	ppMediaTypes[0]->pbFormat=(char *)CoTaskMemAlloc(ppMediaTypes[0]->cbFormat);
	memcpy(ppMediaTypes[0]->pbFormat, type->pbFormat, ppMediaTypes[0]->cbFormat);
    }
    if (cMediaTypes == 1)
	return 0;
    return 1;
}

/* I expect that these methods are unused. */
static HRESULT STDCALL CEnumMediaTypes_Skip(IEnumMediaTypes * This,
					    /* [in] */ ULONG cMediaTypes)
{
    return output_unimplemented("CEnumMediaTypes::Skip", This);
}

static HRESULT STDCALL CEnumMediaTypes_Reset(IEnumMediaTypes * This)
{
    Debug printf("CEnumMediaTypes::Reset(%p) called\n", This);
    return 0;
}

static HRESULT STDCALL CEnumMediaTypes_Clone(IEnumMediaTypes * This,
				      /* [out] */ IEnumMediaTypes **ppEnum)
{
    Debug printf("CEnumMediaTypes::Clone(%p) called\n", This);
    return E_NOTIMPL;
}

static void CEnumMediaTypes_Destroy(CEnumMediaTypes* This)
{
    free(This->vt);
    free(This);
}

// IPin->IUnknown methods
IMPLEMENT_IUNKNOWN(CEnumMediaTypes)

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;
    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
 *************/


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
static HRESULT STDCALL COutputPin_Connect(IPin * This,
				    /* [in] */ IPin *pReceivePin,
				    /* [in] */ /* const */ AM_MEDIA_TYPE *pmt)
{
    Debug printf("COutputPin_Connect() called\n");
/*
    *pmt=((COutputPin*)This)->type;
    if(pmt->cbFormat>0)
    {
	pmt->pbFormat=CoTaskMemAlloc(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
}

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;
}

static HRESULT STDCALL COutputPin_Disconnect(IPin * This)
{
    Debug printf("COutputPin_Disconnect(%p) called\n", This);
    return 1;
}

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;
}

static HRESULT STDCALL COutputPin_ConnectionMediaType(IPin * This,
						      /* [out] */ AM_MEDIA_TYPE *pmt)
{
    Debug printf("CInputPin::ConnectionMediaType() called\n");
    if (!pmt)
	return E_INVALIDARG;
    *pmt = ((COutputPin*)This)->type;
    if (pmt->cbFormat>0)
    {
	pmt->pbFormat=(char *)CoTaskMemAlloc(pmt->cbFormat);
	memcpy(pmt->pbFormat, ((COutputPin*)This)->type.pbFormat, pmt->cbFormat);
    }
    return 0;
}

static HRESULT STDCALL COutputPin_QueryPinInfo(IPin * This,
					       /* [out] */ PIN_INFO *pInfo)
{
    return output_unimplemented("COutputPin_QueryPinInfo", This);
}

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;
}

static HRESULT STDCALL COutputPin_QueryId(IPin * This,
					  /* [out] */ LPWSTR *Id)
{
    return output_unimplemented("COutputPin_QueryId", This);
}

static HRESULT STDCALL COutputPin_QueryAccept(IPin * This,
					      /* [in] */ const AM_MEDIA_TYPE *pmt)
{
    return output_unimplemented("COutputPin_QueryAccept", This);
}

static HRESULT STDCALL COutputPin_EnumMediaTypes(IPin * This,
					   /* [out] */ IEnumMediaTypes **ppEnum)
{
    Debug printf("COutputPin_EnumMediaTypes() called\n");
    if (!ppEnum)
	return E_INVALIDARG;
    *ppEnum = (IEnumMediaTypes*) CEnumMediaTypesCreate(&((COutputPin*)This)->type);
    return 0;
}

static HRESULT STDCALL COutputPin_QueryInternalConnections(IPin * This,
						     /* [out] */ IPin **apPin,
						     /* [out][in] */ ULONG *nPin)
{
    return output_unimplemented("COutputPin_QueryInternalConnections", This);
}

static HRESULT STDCALL COutputPin_EndOfStream(IPin * This)
{
    return output_unimplemented("COutputPin_EndOfStream", This);
}