Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/3rdparty/strmbase/enumpins.c

@@ -0,0 +1,209 @@
+/*
+ * Implementation of IEnumPins Interface
+ *
+ * Copyright 2003 Robert Shearman
+ * Copyright 2010 Aric Stewart, CodeWeavers
+ *
+ * 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 "strmbase_private.h"
+
+typedef struct IEnumPinsImpl
+{
+    IEnumPins IEnumPins_iface;
+    LONG refCount;
+    ULONG uIndex;
+    BaseFilter *base;
+    BaseFilter_GetPin receive_pin;
+    BaseFilter_GetPinCount receive_pincount;
+    BaseFilter_GetPinVersion receive_version;
+    DWORD Version;
+} IEnumPinsImpl;
+
+static inline IEnumPinsImpl *impl_from_IEnumPins(IEnumPins *iface)
+{
+    return CONTAINING_RECORD(iface, IEnumPinsImpl, IEnumPins_iface);
+}
+
+static const struct IEnumPinsVtbl IEnumPinsImpl_Vtbl;
+
+HRESULT WINAPI EnumPins_Construct(BaseFilter *base,  BaseFilter_GetPin receive_pin, BaseFilter_GetPinCount receive_pincount, BaseFilter_GetPinVersion receive_version, IEnumPins ** ppEnum)
+{
+    IEnumPinsImpl * pEnumPins;
+
+    if (!ppEnum)
+        return E_POINTER;
+
+    pEnumPins = CoTaskMemAlloc(sizeof(IEnumPinsImpl));
+    if (!pEnumPins)
+    {
+        *ppEnum = NULL;
+        return E_OUTOFMEMORY;
+    }
+    pEnumPins->IEnumPins_iface.lpVtbl = &IEnumPinsImpl_Vtbl;
+    pEnumPins->refCount = 1;
+    pEnumPins->uIndex = 0;
+    pEnumPins->receive_pin = receive_pin;
+    pEnumPins->receive_pincount = receive_pincount;
+    pEnumPins->receive_version = receive_version;
+    pEnumPins->base = base;
+    IBaseFilter_AddRef(&base->IBaseFilter_iface);
+    *ppEnum = &pEnumPins->IEnumPins_iface;
+    pEnumPins->Version = receive_version(base);
+
+    TRACE("Created new enumerator (%p)\n", *ppEnum);
+    return S_OK;
+}
+
+static HRESULT WINAPI IEnumPinsImpl_QueryInterface(IEnumPins * iface, REFIID riid, LPVOID * ppv)
+{
+    TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
+
+    *ppv = NULL;
+
+    if (IsEqualIID(riid, &IID_IUnknown))
+        *ppv = iface;
+    else if (IsEqualIID(riid, &IID_IEnumPins))
+        *ppv = iface;
+
+    if (*ppv)
+    {
+        IUnknown_AddRef((IUnknown *)(*ppv));
+        return S_OK;
+    }
+
+    FIXME("No interface for %s!\n", debugstr_guid(riid));
+
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI IEnumPinsImpl_AddRef(IEnumPins * iface)
+{
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+    ULONG ref = InterlockedIncrement(&This->refCount);
+
+    TRACE("(%p)->(): new ref =  %u\n", iface, ref);
+
+    return ref;
+}
+
+static ULONG WINAPI IEnumPinsImpl_Release(IEnumPins * iface)
+{
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+    ULONG ref = InterlockedDecrement(&This->refCount);
+
+    TRACE("(%p)->(): new ref = %u\n", iface, ref);
+
+    if (!ref)
+    {
+        IBaseFilter_Release(&This->base->IBaseFilter_iface);
+        CoTaskMemFree(This);
+    }
+
+    return ref;
+}
+
+static HRESULT WINAPI IEnumPinsImpl_Next(IEnumPins * iface, ULONG cPins, IPin ** ppPins, ULONG * pcFetched)
+{
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+    ULONG i = 0;
+
+    TRACE("(%p)->(%u, %p, %p)\n", iface, cPins, ppPins, pcFetched);
+
+    if (!ppPins)
+        return E_POINTER;
+
+    if (cPins > 1 && !pcFetched)
+        return E_INVALIDARG;
+
+    if (pcFetched)
+        *pcFetched = 0;
+
+    if (This->Version != This->receive_version(This->base))
+        return VFW_E_ENUM_OUT_OF_SYNC;
+
+    while (i < cPins)
+    {
+       IPin *pin;
+       pin = This->receive_pin(This->base, This->uIndex + i);
+
+       if (!pin)
+         break;
+       else
+         ppPins[i] = pin;
+       ++i;
+    }
+
+    if (pcFetched)
+        *pcFetched = i;
+    This->uIndex += i;
+
+    if (i < cPins)
+        return S_FALSE;
+    return S_OK;
+}
+
+static HRESULT WINAPI IEnumPinsImpl_Skip(IEnumPins * iface, ULONG cPins)
+{
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+
+    TRACE("(%p)->(%u)\n", iface, cPins);
+
+    if (This->Version != This->receive_version(This->base))
+        return VFW_E_ENUM_OUT_OF_SYNC;
+
+    if (This->receive_pincount(This->base) >= This->uIndex + cPins)
+        return S_FALSE;
+
+    This->uIndex += cPins;
+    return S_OK;
+}
+
+static HRESULT WINAPI IEnumPinsImpl_Reset(IEnumPins * iface)
+{
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+
+    TRACE("(%p)->()\n", iface);
+
+    This->Version = This->receive_version(This->base);
+
+    This->uIndex = 0;
+    return S_OK;
+}
+
+static HRESULT WINAPI IEnumPinsImpl_Clone(IEnumPins * iface, IEnumPins ** ppEnum)
+{
+    HRESULT hr;
+    IEnumPinsImpl *This = impl_from_IEnumPins(iface);
+
+    TRACE("(%p)->(%p)\n", iface, ppEnum);
+
+    hr = EnumPins_Construct(This->base, This->receive_pin, This->receive_pincount, This->receive_version, ppEnum);
+    if (FAILED(hr))
+        return hr;
+    return IEnumPins_Skip(*ppEnum, This->uIndex);
+}
+
+static const IEnumPinsVtbl IEnumPinsImpl_Vtbl =
+{
+    IEnumPinsImpl_QueryInterface,
+    IEnumPinsImpl_AddRef,
+    IEnumPinsImpl_Release,
+    IEnumPinsImpl_Next,
+    IEnumPinsImpl_Skip,
+    IEnumPinsImpl_Reset,
+    IEnumPinsImpl_Clone
+};