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windowscodecs: Return stub IEnumString from mqr_GetEnumerator(). 

Based on a patch by Fabian Maurer.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51748
Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Esme Povirk <esme@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2021-11-24 15:04:14 +03:00 committed by Alexandre Julliard
parent 6cee83a665
commit 3b3394bc8e
1 changed files with 116 additions and 4 deletions
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120
dlls/windowscodecs/metadataquery.c
View File

@ -596,14 +596,126 @@ static HRESULT WINAPI mqr_GetMetadataByName(IWICMetadataQueryReader *iface, LPCW
return hr;
}
static HRESULT WINAPI mqr_GetEnumerator(IWICMetadataQueryReader *iface,
IEnumString **ppIEnumString)
struct string_enumerator
{
QueryReader *This = impl_from_IWICMetadataQueryReader(iface);
FIXME("(%p,%p)\n", This, ppIEnumString);
IEnumString IEnumString_iface;
LONG ref;
};
static struct string_enumerator *impl_from_IEnumString(IEnumString *iface)
{
return CONTAINING_RECORD(iface, struct string_enumerator, IEnumString_iface);
}
static HRESULT WINAPI string_enumerator_QueryInterface(IEnumString *iface, REFIID riid, void **ppv)
{
struct string_enumerator *this = impl_from_IEnumString(iface);
TRACE("iface %p, riid %s, ppv %p.\n", iface, debugstr_guid(riid), ppv);
if (IsEqualGUID(riid, &IID_IEnumString) || IsEqualGUID(riid, &IID_IUnknown))
*ppv = &this->IEnumString_iface;
else
{
WARN("Unknown riid %s.\n", debugstr_guid(riid));
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef(&this->IEnumString_iface);
return S_OK;
}
static ULONG WINAPI string_enumerator_AddRef(IEnumString *iface)
{
struct string_enumerator *this = impl_from_IEnumString(iface);
ULONG ref = InterlockedIncrement(&this->ref);
TRACE("iface %p, ref %u.\n", iface, ref);
return ref;
}
static ULONG WINAPI string_enumerator_Release(IEnumString *iface)
{
struct string_enumerator *this = impl_from_IEnumString(iface);
ULONG ref = InterlockedDecrement(&this->ref);
TRACE("iface %p, ref %u.\n", iface, ref);
if (!ref)
free(this);
return ref;
}
static HRESULT WINAPI string_enumerator_Next(IEnumString *iface, ULONG count, LPOLESTR *strings, ULONG *ret)
{
FIXME("iface %p, count %u, strings %p, ret %p stub.\n", iface, count, strings, ret);
if (!strings || !ret)
return E_INVALIDARG;
*ret = 0;
return count ? S_FALSE : S_OK;
}
static HRESULT WINAPI string_enumerator_Reset(IEnumString *iface)
{
TRACE("iface %p.\n", iface);
return S_OK;
}
static HRESULT WINAPI string_enumerator_Skip(IEnumString *iface, ULONG count)
{
FIXME("iface %p, count %u stub.\n", iface, count);
return count ? S_FALSE : S_OK;
}
static HRESULT WINAPI string_enumerator_Clone(IEnumString *iface, IEnumString **out)
{
FIXME("iface %p, out %p stub.\n", iface, out);
*out = NULL;
return E_NOTIMPL;
}
static const IEnumStringVtbl string_enumerator_vtbl =
{
string_enumerator_QueryInterface,
string_enumerator_AddRef,
string_enumerator_Release,
string_enumerator_Next,
string_enumerator_Skip,
string_enumerator_Reset,
string_enumerator_Clone
};
static HRESULT string_enumerator_create(IEnumString **enum_string)
{
struct string_enumerator *object;
if (!(object = calloc(1, sizeof(*object))))
return E_OUTOFMEMORY;
object->IEnumString_iface.lpVtbl = &string_enumerator_vtbl;
object->ref = 1;
*enum_string = &object->IEnumString_iface;
return S_OK;
}
static HRESULT WINAPI mqr_GetEnumerator(IWICMetadataQueryReader *iface,
IEnumString **enum_string)
{
TRACE("iface %p, enum_string %p.\n", iface, enum_string);
return string_enumerator_create(enum_string);
}
static IWICMetadataQueryReaderVtbl mqr_vtbl = {
mqr_QueryInterface,
mqr_AddRef,