Sweden-Number/dlls/windowscodecs/propertybag.c

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/*
* Copyright 2009 Vincent Povirk for CodeWeavers
* Copyright 2013 Ludger Sprenker
*
* 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 <stdarg.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
typedef struct PropertyBag {
IPropertyBag2 IPropertyBag2_iface;
LONG ref;
UINT prop_count;
PROPBAG2 *properties;
VARIANT *values;
} PropertyBag;
static inline PropertyBag *impl_from_IPropertyBag2(IPropertyBag2 *iface)
{
return CONTAINING_RECORD(iface, PropertyBag, IPropertyBag2_iface);
}
static HRESULT WINAPI PropertyBag_QueryInterface(IPropertyBag2 *iface, REFIID iid,
void **ppv)
{
PropertyBag *This = impl_from_IPropertyBag2(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IPropertyBag2, iid))
{
*ppv = &This->IPropertyBag2_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI PropertyBag_AddRef(IPropertyBag2 *iface)
{
PropertyBag *This = impl_from_IPropertyBag2(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI PropertyBag_Release(IPropertyBag2 *iface)
{
PropertyBag *This = impl_from_IPropertyBag2(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
ULONG i;
if (This->properties && This->values)
{
for (i=0; i < This->prop_count; i++)
{
CoTaskMemFree(This->properties[i].pstrName);
VariantClear( This->values+i );
}
}
HeapFree(GetProcessHeap(), 0, This->properties);
HeapFree(GetProcessHeap(), 0, This->values);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static LONG find_item(PropertyBag *This, LPCOLESTR name)
{
LONG i;
if (!This->properties)
return -1;
if (!name)
return -1;
for (i=0; i < This->prop_count; i++)
{
if (wcscmp(name, This->properties[i].pstrName) == 0)
return i;
}
return -1;
}
static HRESULT WINAPI PropertyBag_Read(IPropertyBag2 *iface, ULONG cProperties,
PROPBAG2 *pPropBag, IErrorLog *pErrLog, VARIANT *pvarValue, HRESULT *phrError)
{
HRESULT res = S_OK;
ULONG i;
PropertyBag *This = impl_from_IPropertyBag2(iface);
TRACE("(%p,%u,%p,%p,%p,%p)\n", iface, cProperties, pPropBag, pErrLog, pvarValue, phrError);
for (i=0; i < cProperties; i++)
{
LONG idx;
if (pPropBag[i].dwHint && pPropBag[i].dwHint <= This->prop_count)
idx = pPropBag[i].dwHint-1;
else
idx = find_item(This, pPropBag[i].pstrName);
if (idx > -1)
{
VariantInit(pvarValue+i);
res = VariantCopy(pvarValue+i, This->values+idx);
if (FAILED(res))
break;
phrError[i] = res;
}
else
{
res = E_FAIL;
break;
}
}
return res;
}
static HRESULT WINAPI PropertyBag_Write(IPropertyBag2 *iface, ULONG cProperties,
PROPBAG2 *pPropBag, VARIANT *pvarValue)
{
HRESULT res = S_OK;
ULONG i;
PropertyBag *This = impl_from_IPropertyBag2(iface);
TRACE("(%p,%u,%p,%p)\n", iface, cProperties, pPropBag, pvarValue);
for (i=0; i < cProperties; i++)
{
LONG idx;
if (pPropBag[i].dwHint && pPropBag[i].dwHint <= This->prop_count)
idx = pPropBag[i].dwHint-1;
else
idx = find_item(This, pPropBag[i].pstrName);
if (idx > -1)
{
if (This->properties[idx].vt != V_VT(pvarValue+i))
return WINCODEC_ERR_PROPERTYUNEXPECTEDTYPE;
res = VariantCopy(This->values+idx, pvarValue+i);
if (FAILED(res))
return E_FAIL;
}
else
{
if (pPropBag[i].pstrName)
FIXME("Application tried to set the unknown option %s.\n",
debugstr_w(pPropBag[i].pstrName));
/* FIXME: Function is not atomar on error, but MSDN does not say anything about it
* (no reset of items between 0 and i-1) */
return E_FAIL;
}
}
return res;
}
static HRESULT WINAPI PropertyBag_CountProperties(IPropertyBag2 *iface, ULONG *pcProperties)
{
PropertyBag *This = impl_from_IPropertyBag2(iface);
TRACE("(%p,%p)\n", iface, pcProperties);
if (!pcProperties)
return E_INVALIDARG;
*pcProperties = This->prop_count;
return S_OK;
}
static HRESULT copy_propbag2(PROPBAG2 *dest, const PROPBAG2 *src)
{
dest->cfType = src->cfType;
dest->clsid = src->clsid;
dest->dwHint = src->dwHint;
dest->dwType = src->dwType;
dest->vt = src->vt;
dest->pstrName = CoTaskMemAlloc((lstrlenW(src->pstrName)+1) * sizeof(WCHAR));
if(!dest->pstrName)
return E_OUTOFMEMORY;
lstrcpyW(dest->pstrName, src->pstrName);
return S_OK;
}
static HRESULT WINAPI PropertyBag_GetPropertyInfo(IPropertyBag2 *iface, ULONG iProperty,
ULONG cProperties, PROPBAG2 *pPropBag, ULONG *pcProperties)
{
HRESULT res = S_OK;
ULONG i;
PropertyBag *This = impl_from_IPropertyBag2(iface);
TRACE("(%p,%u,%u,%p,%p)\n", iface, iProperty, cProperties, pPropBag, pcProperties);
if (iProperty >= This->prop_count && iProperty > 0)
return WINCODEC_ERR_VALUEOUTOFRANGE;
if (iProperty+cProperties > This->prop_count )
return WINCODEC_ERR_VALUEOUTOFRANGE;
*pcProperties = min(cProperties, This->prop_count-iProperty);
for (i=0; i < *pcProperties; i++)
{
res = copy_propbag2(pPropBag+i, This->properties+iProperty+i);
if (FAILED(res))
{
do {
CoTaskMemFree( pPropBag[--i].pstrName );
} while (i);
break;
}
}
return res;
}
static HRESULT WINAPI PropertyBag_LoadObject(IPropertyBag2 *iface, LPCOLESTR pstrName,
DWORD dwHint, IUnknown *pUnkObject, IErrorLog *pErrLog)
{
FIXME("(%p,%s,%u,%p,%p): stub\n", iface, debugstr_w(pstrName), dwHint, pUnkObject, pErrLog);
return E_NOTIMPL;
}
static const IPropertyBag2Vtbl PropertyBag_Vtbl = {
PropertyBag_QueryInterface,
PropertyBag_AddRef,
PropertyBag_Release,
PropertyBag_Read,
PropertyBag_Write,
PropertyBag_CountProperties,
PropertyBag_GetPropertyInfo,
PropertyBag_LoadObject
};
HRESULT CreatePropertyBag2(const PROPBAG2 *options, UINT count,
IPropertyBag2 **ppPropertyBag2)
{
UINT i;
HRESULT res = S_OK;
PropertyBag *This;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(PropertyBag));
if (!This) return E_OUTOFMEMORY;
This->IPropertyBag2_iface.lpVtbl = &PropertyBag_Vtbl;
This->ref = 1;
This->prop_count = count;
if (count == 0)
{
This->properties = NULL;
This->values = NULL;
}
else
{
This->properties = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(PROPBAG2)*count);
This->values = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(VARIANT)*count);
if (!This->properties || !This->values)
res = E_OUTOFMEMORY;
else
for (i=0; i < count; i++)
{
res = copy_propbag2(This->properties+i, options+i);
if (FAILED(res))
break;
This->properties[i].dwHint = i+1; /* 0 means unset, so we start with 1 */
}
}
if (FAILED(res))
{
PropertyBag_Release(&This->IPropertyBag2_iface);
*ppPropertyBag2 = NULL;
}
else
*ppPropertyBag2 = &This->IPropertyBag2_iface;
return res;
}