Sweden-Number/dlls/qasf/asfreader.c

176 lines
4.9 KiB
C

/*
* WM ASF reader
*
* Copyright 2020 Jactry Zeng for 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 "qasf_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(qasf);
struct asf_reader
{
struct strmbase_filter filter;
IFileSourceFilter IFileSourceFilter_iface;
AM_MEDIA_TYPE type;
WCHAR *filename;
};
static inline struct asf_reader *impl_reader_from_strmbase_filter(struct strmbase_filter *iface)
{
return CONTAINING_RECORD(iface, struct asf_reader, filter);
}
static struct strmbase_pin *asf_reader_get_pin(struct strmbase_filter *iface, unsigned int index)
{
return NULL;
}
static void asf_reader_destroy(struct strmbase_filter *iface)
{
struct asf_reader *filter = impl_reader_from_strmbase_filter(iface);
free(filter->filename);
FreeMediaType(&filter->type);
strmbase_filter_cleanup(&filter->filter);
free(filter);
}
static HRESULT asf_reader_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
{
struct asf_reader *filter = impl_reader_from_strmbase_filter(iface);
if (IsEqualGUID(iid, &IID_IFileSourceFilter))
{
*out = &filter->IFileSourceFilter_iface;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
return E_NOINTERFACE;
}
static struct strmbase_filter_ops filter_ops =
{
.filter_get_pin = asf_reader_get_pin,
.filter_destroy = asf_reader_destroy,
.filter_query_interface = asf_reader_query_interface,
};
static inline struct asf_reader *impl_from_IFileSourceFilter(IFileSourceFilter *iface)
{
return CONTAINING_RECORD(iface, struct asf_reader, IFileSourceFilter_iface);
}
static HRESULT WINAPI filesourcefilter_QueryInterface(IFileSourceFilter *iface, REFIID iid, void **out)
{
struct asf_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_QueryInterface(&filter->filter.IBaseFilter_iface, iid, out);
}
static ULONG WINAPI filesourcefilter_AddRef(IFileSourceFilter *iface)
{
struct asf_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_AddRef(&filter->filter.IBaseFilter_iface);
}
static ULONG WINAPI filesourcefilter_Release(IFileSourceFilter *iface)
{
struct asf_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_Release(&filter->filter.IBaseFilter_iface);
}
static HRESULT WINAPI filesourcefilter_Load(IFileSourceFilter *iface, LPCOLESTR filename, const AM_MEDIA_TYPE *type)
{
struct asf_reader *filter = impl_from_IFileSourceFilter(iface);
TRACE("filter %p, filename %s, type %p.\n", filter, debugstr_w(filename), type);
strmbase_dump_media_type(type);
if (!filename)
return E_POINTER;
if (filter->filename)
return E_FAIL;
if (!(filter->filename = wcsdup(filename)))
return E_OUTOFMEMORY;
if (type)
CopyMediaType(&filter->type, type);
return S_OK;
}
static HRESULT WINAPI filesourcefilter_GetCurFile(IFileSourceFilter *iface, LPOLESTR *filename, AM_MEDIA_TYPE *type)
{
struct asf_reader *filter = impl_from_IFileSourceFilter(iface);
TRACE("filter %p, filename %p, type %p.\n", filter, filename, type);
if (!filename)
return E_POINTER;
*filename = NULL;
if (type)
{
type->majortype = filter->type.majortype;
type->subtype = filter->type.subtype;
type->lSampleSize = filter->type.lSampleSize;
type->pUnk = filter->type.pUnk;
type->cbFormat = filter->type.cbFormat;
}
if (filter->filename)
{
*filename = CoTaskMemAlloc((wcslen(filter->filename) + 1) * sizeof(WCHAR));
wcscpy(*filename, filter->filename);
}
return S_OK;
}
static const IFileSourceFilterVtbl filesourcefilter_vtbl =
{
filesourcefilter_QueryInterface,
filesourcefilter_AddRef,
filesourcefilter_Release,
filesourcefilter_Load,
filesourcefilter_GetCurFile,
};
HRESULT asf_reader_create(IUnknown *outer, IUnknown **out)
{
struct asf_reader *object;
if (!(object = calloc(1, sizeof(*object))))
return E_OUTOFMEMORY;
strmbase_filter_init(&object->filter, outer, &CLSID_WMAsfReader, &filter_ops);
object->IFileSourceFilter_iface.lpVtbl = &filesourcefilter_vtbl;
TRACE("Created WM ASF reader %p.\n", object);
*out = &object->filter.IUnknown_inner;
return S_OK;
}