enumfilters.c File Reference

#include "quartz_private.h"
#include "wine/debug.h"

Include dependency graph for enumfilters.c:

Go to the source code of this file.

Classes
struct	IEnumFiltersImpl

Typedefs
typedef struct IEnumFiltersImpl	IEnumFiltersImpl

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (quartz)
static IEnumFiltersImpl *	impl_from_IEnumFilters (IEnumFilters *iface)
HRESULT	IEnumFiltersImpl_Construct (IGraphVersion *pVersionSource, IBaseFilter ***pppFilters, ULONG *pNumFilters, IEnumFilters **ppEnum)
static HRESULT WINAPI	IEnumFiltersImpl_QueryInterface (IEnumFilters *iface, REFIID riid, LPVOID *ppv)
static ULONG WINAPI	IEnumFiltersImpl_AddRef (IEnumFilters *iface)
static ULONG WINAPI	IEnumFiltersImpl_Release (IEnumFilters *iface)
static HRESULT WINAPI	IEnumFiltersImpl_Next (IEnumFilters *iface, ULONG cFilters, IBaseFilter **ppFilters, ULONG *pcFetched)
static HRESULT WINAPI	IEnumFiltersImpl_Skip (IEnumFilters *iface, ULONG cFilters)
static HRESULT WINAPI	IEnumFiltersImpl_Reset (IEnumFilters *iface)
static HRESULT WINAPI	IEnumFiltersImpl_Clone (IEnumFilters *iface, IEnumFilters **ppEnum)

Variables
static const struct IEnumFiltersVtbl	IEnumFiltersImpl_Vtbl

Typedef Documentation

IEnumFiltersImpl

typedef struct IEnumFiltersImpl IEnumFiltersImpl

Function Documentation

IEnumFiltersImpl_AddRef()

static ULONG WINAPI IEnumFiltersImpl_AddRef ( IEnumFilters *  iface )

static

Definition at line 100 of file enumfilters.c.

{
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
    ULONG refCount = InterlockedIncrement(&This->refCount);
 
    TRACE("(%p)->()\n", iface);
 
    return refCount;
}

IEnumFiltersImpl_Clone()

static HRESULT WINAPI IEnumFiltersImpl_Clone ( IEnumFilters *  iface, IEnumFilters **  ppEnum  )

static

Definition at line 193 of file enumfilters.c.

{
    HRESULT hr;
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
 
    TRACE("(%p)->(%p)\n", iface, ppEnum);
 
    hr = IEnumFiltersImpl_Construct(This->pVersionSource, This->pppFilters, This->pNumFilters, ppEnum);
    if (FAILED(hr))
        return hr;
    return IEnumFilters_Skip(*ppEnum, This->uIndex);
}

IEnumFiltersImpl_Construct()

HRESULT IEnumFiltersImpl_Construct	(	IGraphVersion *	pVersionSource,
		IBaseFilter ***	pppFilters,
		ULONG *	pNumFilters,
		IEnumFilters **	ppEnum
	)

Definition at line 45 of file enumfilters.c.

{
    /* Note: The incoming IBaseFilter interfaces are not AddRef'd here as in Windows,
     * they should have been previously AddRef'd. */
    IEnumFiltersImpl * pEnumFilters = CoTaskMemAlloc(sizeof(IEnumFiltersImpl));
    HRESULT hr;
    LONG currentVersion;
 
    TRACE("(%p, %p, %p)\n", pppFilters, pNumFilters, ppEnum);
 
    *ppEnum = NULL;
 
    if (!pEnumFilters)
    {
        return E_OUTOFMEMORY;
    }
 
    pEnumFilters->IEnumFilters_iface.lpVtbl = &IEnumFiltersImpl_Vtbl;
    pEnumFilters->refCount = 1;
    pEnumFilters->uIndex = 0;
    pEnumFilters->pNumFilters = pNumFilters;
    pEnumFilters->pppFilters = pppFilters;
    IGraphVersion_AddRef(pVersionSource);
    pEnumFilters->pVersionSource = pVersionSource;
 
    /* Store the current version of the graph */
    hr = IGraphVersion_QueryVersion(pVersionSource, &currentVersion);
    pEnumFilters->Version = (hr==S_OK) ? currentVersion : 0;
 
    *ppEnum = &pEnumFilters->IEnumFilters_iface;
    return S_OK;
}

Referenced by FilterGraph2_EnumFilters(), and IEnumFiltersImpl_Clone().

IEnumFiltersImpl_Next()

static HRESULT WINAPI IEnumFiltersImpl_Next ( IEnumFilters *  iface, ULONG  cFilters, IBaseFilter **  ppFilters, ULONG *  pcFetched  )

static

Definition at line 127 of file enumfilters.c.

{
    ULONG cFetched; 
    ULONG i;
    LONG currentVersion;
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
    HRESULT hr;
 
    cFetched = min(*This->pNumFilters, This->uIndex + cFilters) - This->uIndex;
 
    TRACE("(%p)->(%u, %p, %p)\n", iface, cFilters, ppFilters, pcFetched);
 
    /* First of all check if the graph has changed */
    hr = IGraphVersion_QueryVersion(This->pVersionSource, &currentVersion);
    if (hr==S_OK && This->Version != currentVersion)
        return VFW_E_ENUM_OUT_OF_SYNC;
 
 
    if (!ppFilters)
        return E_POINTER;
 
    for (i = 0; i < cFetched; i++)
    {
        ppFilters[i] = (*This->pppFilters)[This->uIndex + i];
    IBaseFilter_AddRef(ppFilters[i]);
    }
 
    This->uIndex += cFetched;
 
    if (pcFetched)
        *pcFetched = cFetched;
 
    if (cFetched != cFilters)
        return S_FALSE;
    return S_OK;
}

IEnumFiltersImpl_QueryInterface()

static HRESULT WINAPI IEnumFiltersImpl_QueryInterface ( IEnumFilters *  iface, REFIID  riid, LPVOID *  ppv  )

static

Definition at line 78 of file enumfilters.c.

{
    TRACE("(%p)->(%s, %p)\n", iface, qzdebugstr_guid(riid), ppv);
 
    *ppv = NULL;
 
    if (IsEqualIID(riid, &IID_IUnknown))
        *ppv = iface;
    else if (IsEqualIID(riid, &IID_IEnumFilters))
        *ppv = iface;
 
    if (*ppv)
    {
        IUnknown_AddRef((IUnknown *)(*ppv));
        return S_OK;
    }
 
    FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 
    return E_NOINTERFACE;
}

IEnumFiltersImpl_Release()

static ULONG WINAPI IEnumFiltersImpl_Release ( IEnumFilters *  iface )

static

Definition at line 110 of file enumfilters.c.

{
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
    ULONG refCount = InterlockedDecrement(&This->refCount);
 
    TRACE("(%p)->()\n", iface);
 
    if (!refCount)
    {
        IGraphVersion_Release(This->pVersionSource);
        CoTaskMemFree(This);
        return 0;
    }
    else
        return refCount;
}

IEnumFiltersImpl_Reset()

static HRESULT WINAPI IEnumFiltersImpl_Reset ( IEnumFilters *  iface )

static

Definition at line 178 of file enumfilters.c.

{
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
    HRESULT hr;
    LONG currentVersion;
 
    TRACE("(%p)->()\n", iface);
 
    This->uIndex = 0;
    hr = IGraphVersion_QueryVersion(This->pVersionSource, &currentVersion);
    if (hr == S_OK)
        This->Version = currentVersion;
    return S_OK;
}

IEnumFiltersImpl_Skip()

static HRESULT WINAPI IEnumFiltersImpl_Skip ( IEnumFilters *  iface, ULONG  cFilters  )

static

Definition at line 164 of file enumfilters.c.

{
    IEnumFiltersImpl *This = impl_from_IEnumFilters(iface);
 
    TRACE("(%p)->(%u)\n", iface, cFilters);
 
    if (This->uIndex + cFilters < *This->pNumFilters)
    {
        This->uIndex += cFilters;
        return S_OK;
    }
    return S_FALSE;
}

impl_from_IEnumFilters()

static IEnumFiltersImpl * impl_from_IEnumFilters ( IEnumFilters *  iface )

inlinestatic

Definition at line 40 of file enumfilters.c.

{
    return CONTAINING_RECORD(iface, IEnumFiltersImpl, IEnumFilters_iface);
}

Referenced by IEnumFiltersImpl_AddRef(), IEnumFiltersImpl_Clone(), IEnumFiltersImpl_Next(), IEnumFiltersImpl_Release(), IEnumFiltersImpl_Reset(), and IEnumFiltersImpl_Skip().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

quartz

)

Variable Documentation

IEnumFiltersImpl_Vtbl

static const IEnumFiltersVtbl IEnumFiltersImpl_Vtbl

static

Initial value:

=
{
    IEnumFiltersImpl_QueryInterface,
    IEnumFiltersImpl_AddRef,
    IEnumFiltersImpl_Release,
    IEnumFiltersImpl_Next,
    IEnumFiltersImpl_Skip,
    IEnumFiltersImpl_Reset,
    IEnumFiltersImpl_Clone
}

Definition at line 38 of file enumfilters.c.

Referenced by IEnumFiltersImpl_Construct().