forked from Mirrors/wine-wine
115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/*
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* Seeking passthrough object
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*
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* Copyright 2020 Zebediah Figura for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "quartz_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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struct seeking_passthrough
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{
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struct strmbase_passthrough passthrough;
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IUnknown IUnknown_inner;
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IUnknown *outer_unk;
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LONG refcount;
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};
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static struct seeking_passthrough *impl_from_IUnknown(IUnknown *iface)
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{
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return CONTAINING_RECORD(iface, struct seeking_passthrough, IUnknown_inner);
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}
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static HRESULT WINAPI seeking_passthrough_QueryInterface(IUnknown *iface, REFIID iid, void **out)
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{
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struct seeking_passthrough *passthrough = impl_from_IUnknown(iface);
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TRACE("passthrough %p, iid %s, out %p.\n", passthrough, debugstr_guid(iid), out);
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if (IsEqualGUID(iid, &IID_IUnknown))
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*out = iface;
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else if (IsEqualGUID(iid, &IID_IMediaPosition))
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*out = &passthrough->passthrough.IMediaPosition_iface;
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else if (IsEqualGUID(iid, &IID_IMediaSeeking))
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*out = &passthrough->passthrough.IMediaSeeking_iface;
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else if (IsEqualGUID(iid, &IID_ISeekingPassThru))
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*out = &passthrough->passthrough.ISeekingPassThru_iface;
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else
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{
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*out = NULL;
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WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
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return E_NOINTERFACE;
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}
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IUnknown_AddRef((IUnknown *)*out);
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return S_OK;
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}
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static ULONG WINAPI seeking_passthrough_AddRef(IUnknown *iface)
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{
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struct seeking_passthrough *passthrough = impl_from_IUnknown(iface);
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ULONG refcount = InterlockedIncrement(&passthrough->refcount);
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TRACE("%p increasing refcount to %u.\n", passthrough, refcount);
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return refcount;
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}
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static ULONG WINAPI seeking_passthrough_Release(IUnknown *iface)
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{
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struct seeking_passthrough *passthrough = impl_from_IUnknown(iface);
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ULONG refcount = InterlockedDecrement(&passthrough->refcount);
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TRACE("%p decreasing refcount to %u.\n", passthrough, refcount);
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if (!refcount)
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{
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strmbase_passthrough_cleanup(&passthrough->passthrough);
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free(passthrough);
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InterlockedDecrement(&object_locks);
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}
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return refcount;
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}
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static const IUnknownVtbl seeking_passthrough_vtbl =
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{
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seeking_passthrough_QueryInterface,
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seeking_passthrough_AddRef,
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seeking_passthrough_Release,
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};
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HRESULT seeking_passthrough_create(IUnknown *outer, IUnknown **out)
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{
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struct seeking_passthrough *object;
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TRACE("outer %p, out %p.\n", outer, out);
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if (!(object = calloc(1, sizeof(*object))))
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return E_OUTOFMEMORY;
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object->IUnknown_inner.lpVtbl = &seeking_passthrough_vtbl;
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object->outer_unk = outer ? outer : &object->IUnknown_inner;
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object->refcount = 1;
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strmbase_passthrough_init(&object->passthrough, object->outer_unk);
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TRACE("Created seeking passthrough %p.\n", object);
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*out = &object->IUnknown_inner;
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return S_OK;
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}
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