Sweden-Number/dlls/strmbase/filter.c

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/*
* Generic Implementation of IBaseFilter Interface
*
* 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"
WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
struct enum_pins
{
IEnumPins IEnumPins_iface;
LONG refcount;
unsigned int index, count;
int version;
struct strmbase_filter *filter;
};
static const IEnumPinsVtbl enum_pins_vtbl;
static HRESULT enum_pins_create(struct strmbase_filter *filter, IEnumPins **out)
{
struct enum_pins *object;
if (!out)
return E_POINTER;
if (!(object = heap_alloc_zero(sizeof(*object))))
{
*out = NULL;
return E_OUTOFMEMORY;
}
object->IEnumPins_iface.lpVtbl = &enum_pins_vtbl;
object->refcount = 1;
object->filter = filter;
IBaseFilter_AddRef(&filter->IBaseFilter_iface);
object->version = filter->pin_version;
while (filter->ops->filter_get_pin(filter, object->count))
++object->count;
TRACE("Created enumerator %p.\n", object);
*out = &object->IEnumPins_iface;
return S_OK;
}
static inline struct enum_pins *impl_from_IEnumPins(IEnumPins *iface)
{
return CONTAINING_RECORD(iface, struct enum_pins, IEnumPins_iface);
}
static HRESULT WINAPI enum_pins_QueryInterface(IEnumPins *iface, REFIID iid, void **out)
{
TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
if (IsEqualGUID(iid, &IID_IUnknown) || IsEqualGUID(iid, &IID_IEnumPins))
{
IEnumPins_AddRef(iface);
*out = iface;
return S_OK;
}
WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
*out = NULL;
return E_NOINTERFACE;
}
static ULONG WINAPI enum_pins_AddRef(IEnumPins *iface)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
ULONG refcount = InterlockedIncrement(&enum_pins->refcount);
TRACE("%p increasing refcount to %u.\n", enum_pins, refcount);
return refcount;
}
static ULONG WINAPI enum_pins_Release(IEnumPins *iface)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
ULONG refcount = InterlockedDecrement(&enum_pins->refcount);
TRACE("%p decreasing refcount to %u.\n", enum_pins, refcount);
if (!refcount)
{
IBaseFilter_Release(&enum_pins->filter->IBaseFilter_iface);
heap_free(enum_pins);
}
return refcount;
}
static HRESULT WINAPI enum_pins_Next(IEnumPins *iface, ULONG count, IPin **pins, ULONG *ret_count)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
unsigned int i;
TRACE("iface %p, count %u, pins %p, ret_count %p.\n", iface, count, pins, ret_count);
if (!pins)
return E_POINTER;
if (count > 1 && !ret_count)
return E_INVALIDARG;
if (ret_count)
*ret_count = 0;
if (enum_pins->version != enum_pins->filter->pin_version)
return S_FALSE;
for (i = 0; i < count; ++i)
{
struct strmbase_pin *pin = enum_pins->filter->ops->filter_get_pin(enum_pins->filter, enum_pins->index + i);
if (!pin)
break;
IPin_AddRef(pins[i] = &pin->IPin_iface);
}
if (ret_count)
*ret_count = i;
enum_pins->index += i;
return i == count ? S_OK : S_FALSE;
}
static HRESULT WINAPI enum_pins_Skip(IEnumPins *iface, ULONG count)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
TRACE("iface %p, count %u.\n", iface, count);
if (enum_pins->version != enum_pins->filter->pin_version)
return VFW_E_ENUM_OUT_OF_SYNC;
if (enum_pins->index + count > enum_pins->count)
return S_FALSE;
enum_pins->index += count;
return S_OK;
}
static HRESULT WINAPI enum_pins_Reset(IEnumPins *iface)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
TRACE("iface %p.\n", iface);
if (enum_pins->version != enum_pins->filter->pin_version)
{
enum_pins->count = 0;
while (enum_pins->filter->ops->filter_get_pin(enum_pins->filter, enum_pins->count))
++enum_pins->count;
}
enum_pins->version = enum_pins->filter->pin_version;
enum_pins->index = 0;
return S_OK;
}
static HRESULT WINAPI enum_pins_Clone(IEnumPins *iface, IEnumPins **out)
{
struct enum_pins *enum_pins = impl_from_IEnumPins(iface);
HRESULT hr;
TRACE("iface %p, out %p.\n", iface, out);
if (FAILED(hr = enum_pins_create(enum_pins->filter, out)))
return hr;
return IEnumPins_Skip(*out, enum_pins->index);
}
static const IEnumPinsVtbl enum_pins_vtbl =
{
enum_pins_QueryInterface,
enum_pins_AddRef,
enum_pins_Release,
enum_pins_Next,
enum_pins_Skip,
enum_pins_Reset,
enum_pins_Clone,
};
static inline struct strmbase_filter *impl_from_IUnknown(IUnknown *iface)
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{
return CONTAINING_RECORD(iface, struct strmbase_filter, IUnknown_inner);
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}
static HRESULT WINAPI filter_inner_QueryInterface(IUnknown *iface, REFIID iid, void **out)
{
struct strmbase_filter *filter = impl_from_IUnknown(iface);
HRESULT hr;
TRACE("filter %p %s, iid %s, out %p.\n", filter, debugstr_w(filter->name), debugstr_guid(iid), out);
*out = NULL;
if (filter->ops->filter_query_interface
&& SUCCEEDED(hr = filter->ops->filter_query_interface(filter, iid, out)))
{
return hr;
}
if (IsEqualIID(iid, &IID_IUnknown))
*out = iface;
else if (IsEqualIID(iid, &IID_IPersist)
|| IsEqualIID(iid, &IID_IMediaFilter)
|| IsEqualIID(iid, &IID_IBaseFilter))
{
*out = &filter->IBaseFilter_iface;
}
else
{
WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
static ULONG WINAPI filter_inner_AddRef(IUnknown *iface)
{
struct strmbase_filter *filter = impl_from_IUnknown(iface);
ULONG refcount = InterlockedIncrement(&filter->refcount);
TRACE("%p increasing refcount to %u.\n", filter, refcount);
return refcount;
}
static ULONG WINAPI filter_inner_Release(IUnknown *iface)
{
struct strmbase_filter *filter = impl_from_IUnknown(iface);
ULONG refcount = InterlockedDecrement(&filter->refcount);
TRACE("%p decreasing refcount to %u.\n", filter, refcount);
if (!refcount)
filter->ops->filter_destroy(filter);
return refcount;
}
static const IUnknownVtbl filter_inner_vtbl =
{
filter_inner_QueryInterface,
filter_inner_AddRef,
filter_inner_Release,
};
static inline struct strmbase_filter *impl_from_IBaseFilter(IBaseFilter *iface)
{
return CONTAINING_RECORD(iface, struct strmbase_filter, IBaseFilter_iface);
}
static HRESULT WINAPI filter_QueryInterface(IBaseFilter *iface, REFIID iid, void **out)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
return IUnknown_QueryInterface(filter->outer_unk, iid, out);
}
static ULONG WINAPI filter_AddRef(IBaseFilter *iface)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
return IUnknown_AddRef(filter->outer_unk);
}
static ULONG WINAPI filter_Release(IBaseFilter *iface)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
return IUnknown_Release(filter->outer_unk);
}
static HRESULT WINAPI filter_GetClassID(IBaseFilter *iface, CLSID *clsid)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, clsid %p.\n", filter, debugstr_w(filter->name), clsid);
*clsid = filter->clsid;
return S_OK;
}
static HRESULT WINAPI filter_Stop(IBaseFilter *iface)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
HRESULT hr = S_OK;
TRACE("filter %p %s.\n", filter, debugstr_w(filter->name));
EnterCriticalSection(&filter->csFilter);
if (filter->state == State_Running && filter->ops->filter_stop_stream)
hr = filter->ops->filter_stop_stream(filter);
if (SUCCEEDED(hr) && filter->ops->filter_cleanup_stream)
hr = filter->ops->filter_cleanup_stream(filter);
if (SUCCEEDED(hr))
filter->state = State_Stopped;
LeaveCriticalSection(&filter->csFilter);
return hr;
}
static HRESULT WINAPI filter_Pause(IBaseFilter *iface)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
HRESULT hr = S_OK;
TRACE("filter %p %s.\n", filter, debugstr_w(filter->name));
EnterCriticalSection(&filter->csFilter);
if (filter->state == State_Stopped && filter->ops->filter_init_stream)
hr = filter->ops->filter_init_stream(filter);
else if (filter->state == State_Running && filter->ops->filter_stop_stream)
hr = filter->ops->filter_stop_stream(filter);
if (SUCCEEDED(hr))
filter->state = State_Paused;
LeaveCriticalSection(&filter->csFilter);
return hr;
}
static HRESULT WINAPI filter_Run(IBaseFilter *iface, REFERENCE_TIME start)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
HRESULT hr = S_OK;
TRACE("filter %p %s, start %s.\n", filter, debugstr_w(filter->name), debugstr_time(start));
EnterCriticalSection(&filter->csFilter);
if (filter->state == State_Stopped && filter->ops->filter_init_stream)
hr = filter->ops->filter_init_stream(filter);
if (SUCCEEDED(hr) && filter->ops->filter_start_stream)
hr = filter->ops->filter_start_stream(filter, start);
if (SUCCEEDED(hr))
filter->state = State_Running;
LeaveCriticalSection(&filter->csFilter);
return hr;
}
static HRESULT WINAPI filter_GetState(IBaseFilter *iface, DWORD timeout, FILTER_STATE *state)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
HRESULT hr = S_OK;
TRACE("filter %p %s, timeout %u, state %p.\n", filter, debugstr_w(filter->name), timeout, state);
EnterCriticalSection(&filter->csFilter);
if (filter->ops->filter_wait_state)
hr = filter->ops->filter_wait_state(filter, timeout);
*state = filter->state;
LeaveCriticalSection(&filter->csFilter);
return hr;
}
static HRESULT WINAPI filter_SetSyncSource(IBaseFilter *iface, IReferenceClock *clock)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, clock %p.\n", filter, debugstr_w(filter->name), clock);
EnterCriticalSection(&filter->csFilter);
if (filter->clock)
IReferenceClock_Release(filter->clock);
filter->clock = clock;
if (filter->clock)
IReferenceClock_AddRef(filter->clock);
LeaveCriticalSection(&filter->csFilter);
return S_OK;
}
static HRESULT WINAPI filter_GetSyncSource(IBaseFilter *iface, IReferenceClock **clock)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, clock %p.\n", filter, debugstr_w(filter->name), clock);
EnterCriticalSection(&filter->csFilter);
*clock = filter->clock;
if (filter->clock)
IReferenceClock_AddRef(filter->clock);
LeaveCriticalSection(&filter->csFilter);
return S_OK;
}
static HRESULT WINAPI filter_EnumPins(IBaseFilter *iface, IEnumPins **enum_pins)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, enum_pins %p.\n", filter, debugstr_w(filter->name), enum_pins);
return enum_pins_create(filter, enum_pins);
}
static HRESULT WINAPI filter_FindPin(IBaseFilter *iface, const WCHAR *id, IPin **ret)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
struct strmbase_pin *pin;
unsigned int i;
TRACE("filter %p %s, id %s, ret %p.\n", filter, debugstr_w(filter->name), debugstr_w(id), ret);
for (i = 0; (pin = filter->ops->filter_get_pin(filter, i)); ++i)
{
if (!lstrcmpW(id, pin->name))
{
IPin_AddRef(*ret = &pin->IPin_iface);
return S_OK;
}
}
return VFW_E_NOT_FOUND;
}
static HRESULT WINAPI filter_QueryFilterInfo(IBaseFilter *iface, FILTER_INFO *info)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, info %p.\n", filter, debugstr_w(filter->name), info);
lstrcpyW(info->achName, filter->name);
info->pGraph = filter->graph;
if (info->pGraph)
IFilterGraph_AddRef(info->pGraph);
return S_OK;
}
static HRESULT WINAPI filter_JoinFilterGraph(IBaseFilter *iface, IFilterGraph *graph, const WCHAR *name)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, graph %p, name %s.\n", filter, debugstr_w(filter->name), graph, debugstr_w(name));
EnterCriticalSection(&filter->csFilter);
if (name)
lstrcpynW(filter->name, name, ARRAY_SIZE(filter->name));
else
filter->name[0] = 0;
/* The graph references us, so we cannot also reference the graph. */
filter->graph = graph;
LeaveCriticalSection(&filter->csFilter);
return S_OK;
}
static HRESULT WINAPI filter_QueryVendorInfo(IBaseFilter *iface, WCHAR **info)
{
struct strmbase_filter *filter = impl_from_IBaseFilter(iface);
TRACE("filter %p %s, info %p.\n", filter, debugstr_w(filter->name), info);
return E_NOTIMPL;
}
static const IBaseFilterVtbl filter_vtbl =
{
filter_QueryInterface,
filter_AddRef,
filter_Release,
filter_GetClassID,
filter_Stop,
filter_Pause,
filter_Run,
filter_GetState,
filter_SetSyncSource,
filter_GetSyncSource,
filter_EnumPins,
filter_FindPin,
filter_QueryFilterInfo,
filter_JoinFilterGraph,
filter_QueryVendorInfo,
};
VOID WINAPI BaseFilterImpl_IncrementPinVersion(struct strmbase_filter *filter)
{
InterlockedIncrement(&filter->pin_version);
}
void strmbase_filter_init(struct strmbase_filter *filter, IUnknown *outer,
const CLSID *clsid, const struct strmbase_filter_ops *ops)
{
memset(filter, 0, sizeof(*filter));
filter->IBaseFilter_iface.lpVtbl = &filter_vtbl;
filter->IUnknown_inner.lpVtbl = &filter_inner_vtbl;
filter->outer_unk = outer ? outer : &filter->IUnknown_inner;
filter->refcount = 1;
InitializeCriticalSection(&filter->csFilter);
if (filter->csFilter.DebugInfo != (RTL_CRITICAL_SECTION_DEBUG *)-1)
filter->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": strmbase_filter.csFilter");
filter->clsid = *clsid;
filter->pin_version = 1;
filter->ops = ops;
}
void strmbase_filter_cleanup(struct strmbase_filter *This)
{
if (This->clock)
IReferenceClock_Release(This->clock);
This->IBaseFilter_iface.lpVtbl = NULL;
DeleteCriticalSection(&This->csFilter);
}