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wine/dlls/windowscodecs/metadatahandler.c

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/*
* Copyright 2012 Vincent Povirk for CodeWeavers
* Copyright 2012 Dmitry Timoshkov
*
* 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 "config.h"
#include <stdarg.h>
#include <stdio.h>
#define COBJMACROS
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "objbase.h"
#include "wincodec.h"
#include "wincodecsdk.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
typedef struct MetadataHandler {
IWICMetadataWriter IWICMetadataWriter_iface;
LONG ref;
IWICPersistStream IWICPersistStream_iface;
const MetadataHandlerVtbl *vtable;
MetadataItem *items;
DWORD item_count;
CRITICAL_SECTION lock;
} MetadataHandler;
static inline MetadataHandler *impl_from_IWICMetadataWriter(IWICMetadataWriter *iface)
{
return CONTAINING_RECORD(iface, MetadataHandler, IWICMetadataWriter_iface);
}
static inline MetadataHandler *impl_from_IWICPersistStream(IWICPersistStream *iface)
{
return CONTAINING_RECORD(iface, MetadataHandler, IWICPersistStream_iface);
}
static void MetadataHandler_FreeItems(MetadataHandler *This)
{
int i;
for (i=0; i<This->item_count; i++)
{
PropVariantClear(&This->items[i].schema);
PropVariantClear(&This->items[i].id);
PropVariantClear(&This->items[i].value);
}
HeapFree(GetProcessHeap(), 0, This->items);
}
static HRESULT MetadataHandlerEnum_Create(MetadataHandler *parent, DWORD index,
IWICEnumMetadataItem **ppIEnumMetadataItem);
static HRESULT WINAPI MetadataHandler_QueryInterface(IWICMetadataWriter *iface, REFIID iid,
void **ppv)
{
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICMetadataReader, iid) ||
(IsEqualIID(&IID_IWICMetadataWriter, iid) && This->vtable->is_writer))
{
*ppv = &This->IWICMetadataWriter_iface;
}
else if (IsEqualIID(&IID_IPersist, iid) ||
IsEqualIID(&IID_IPersistStream, iid) ||
IsEqualIID(&IID_IWICPersistStream, iid))
{
*ppv = &This->IWICPersistStream_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI MetadataHandler_AddRef(IWICMetadataWriter *iface)
{
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI MetadataHandler_Release(IWICMetadataWriter *iface)
{
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
MetadataHandler_FreeItems(This);
This->lock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI MetadataHandler_GetMetadataHandlerInfo(IWICMetadataWriter *iface,
IWICMetadataHandlerInfo **ppIHandler)
{
HRESULT hr;
IWICComponentInfo *component_info;
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("%p,%p\n", iface, ppIHandler);
hr = CreateComponentInfo(This->vtable->clsid, &component_info);
if (FAILED(hr)) return hr;
hr = IWICComponentInfo_QueryInterface(component_info, &IID_IWICMetadataHandlerInfo,
(void **)ppIHandler);
IWICComponentInfo_Release(component_info);
return hr;
}
static HRESULT WINAPI MetadataHandler_GetMetadataFormat(IWICMetadataWriter *iface,
GUID *pguidMetadataFormat)
{
HRESULT hr;
IWICMetadataHandlerInfo *metadata_info;
TRACE("%p,%p\n", iface, pguidMetadataFormat);
if (!pguidMetadataFormat) return E_INVALIDARG;
hr = MetadataHandler_GetMetadataHandlerInfo(iface, &metadata_info);
if (FAILED(hr)) return hr;
hr = IWICMetadataHandlerInfo_GetMetadataFormat(metadata_info, pguidMetadataFormat);
IWICMetadataHandlerInfo_Release(metadata_info);
return hr;
}
static HRESULT WINAPI MetadataHandler_GetCount(IWICMetadataWriter *iface,
UINT *pcCount)
{
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("%p,%p\n", iface, pcCount);
if (!pcCount) return E_INVALIDARG;
*pcCount = This->item_count;
return S_OK;
}
static HRESULT WINAPI MetadataHandler_GetValueByIndex(IWICMetadataWriter *iface,
UINT index, PROPVARIANT *schema, PROPVARIANT *id, PROPVARIANT *value)
{
HRESULT hr = S_OK;
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("%p,%u,%p,%p,%p\n", iface, index, schema, id, value);
EnterCriticalSection(&This->lock);
if (index >= This->item_count)
{
LeaveCriticalSection(&This->lock);
return E_INVALIDARG;
}
if (schema)
hr = PropVariantCopy(schema, &This->items[index].schema);
if (SUCCEEDED(hr) && id)
hr = PropVariantCopy(id, &This->items[index].id);
if (SUCCEEDED(hr) && value)
hr = PropVariantCopy(value, &This->items[index].value);
LeaveCriticalSection(&This->lock);
return hr;
}
static BOOL get_int_value(const PROPVARIANT *pv, LONGLONG *value)
{
switch (pv->vt)
{
case VT_NULL:
case VT_EMPTY:
*value = 0;
break;
case VT_I1:
*value = pv->u.cVal;
break;
case VT_UI1:
*value = pv->u.bVal;
break;
case VT_I2:
*value = pv->u.iVal;
break;
case VT_UI2:
*value = pv->u.uiVal;
break;
case VT_I4:
*value = pv->u.lVal;
break;
case VT_UI4:
*value = pv->u.ulVal;
break;
case VT_I8:
case VT_UI8:
*value = pv->u.hVal.QuadPart;
break;
default:
FIXME("not supported variant type %d\n", pv->vt);
return FALSE;
}
return TRUE;
}
/* FiXME: Use propsys.PropVariantCompareEx once it's implemented */
static int propvar_cmp(const PROPVARIANT *v1, const PROPVARIANT *v2)
{
LONGLONG value1, value2;
if (!get_int_value(v1, &value1)) return -1;
if (!get_int_value(v2, &value2)) return -1;
value1 -= value2;
if (value1) return value1 < 0 ? -1 : 1;
return 0;
}
static HRESULT WINAPI MetadataHandler_GetValue(IWICMetadataWriter *iface,
const PROPVARIANT *schema, const PROPVARIANT *id, PROPVARIANT *value)
{
UINT i;
HRESULT hr = WINCODEC_ERR_PROPERTYNOTFOUND;
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("(%p,%p,%p,%p)\n", iface, schema, id, value);
if (!id) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
for (i = 0; i < This->item_count; i++)
{
if (schema && This->items[i].schema.vt != VT_EMPTY)
{
if (propvar_cmp(schema, &This->items[i].schema) != 0) continue;
}
if (propvar_cmp(id, &This->items[i].id) != 0) continue;
hr = value ? PropVariantCopy(value, &This->items[i].value) : S_OK;
break;
}
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI MetadataHandler_GetEnumerator(IWICMetadataWriter *iface,
IWICEnumMetadataItem **ppIEnumMetadata)
{
MetadataHandler *This = impl_from_IWICMetadataWriter(iface);
TRACE("(%p,%p)\n", iface, ppIEnumMetadata);
return MetadataHandlerEnum_Create(This, 0, ppIEnumMetadata);
}
static HRESULT WINAPI MetadataHandler_SetValue(IWICMetadataWriter *iface,
const PROPVARIANT *pvarSchema, const PROPVARIANT *pvarId, const PROPVARIANT *pvarValue)
{
FIXME("(%p,%p,%p,%p): stub\n", iface, pvarSchema, pvarId, pvarValue);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_SetValueByIndex(IWICMetadataWriter *iface,
UINT nIndex, const PROPVARIANT *pvarSchema, const PROPVARIANT *pvarId, const PROPVARIANT *pvarValue)
{
FIXME("(%p,%u,%p,%p,%p): stub\n", iface, nIndex, pvarSchema, pvarId, pvarValue);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_RemoveValue(IWICMetadataWriter *iface,
const PROPVARIANT *pvarSchema, const PROPVARIANT *pvarId)
{
FIXME("(%p,%p,%p): stub\n", iface, pvarSchema, pvarId);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_RemoveValueByIndex(IWICMetadataWriter *iface,
UINT nIndex)
{
FIXME("(%p,%u): stub\n", iface, nIndex);
return E_NOTIMPL;
}
static const IWICMetadataWriterVtbl MetadataHandler_Vtbl = {
MetadataHandler_QueryInterface,
MetadataHandler_AddRef,
MetadataHandler_Release,
MetadataHandler_GetMetadataFormat,
MetadataHandler_GetMetadataHandlerInfo,
MetadataHandler_GetCount,
MetadataHandler_GetValueByIndex,
MetadataHandler_GetValue,
MetadataHandler_GetEnumerator,
MetadataHandler_SetValue,
MetadataHandler_SetValueByIndex,
MetadataHandler_RemoveValue,
MetadataHandler_RemoveValueByIndex
};
static HRESULT WINAPI MetadataHandler_PersistStream_QueryInterface(IWICPersistStream *iface,
REFIID iid, void **ppv)
{
MetadataHandler *This = impl_from_IWICPersistStream(iface);
return IWICMetadataWriter_QueryInterface(&This->IWICMetadataWriter_iface, iid, ppv);
}
static ULONG WINAPI MetadataHandler_PersistStream_AddRef(IWICPersistStream *iface)
{
MetadataHandler *This = impl_from_IWICPersistStream(iface);
return IWICMetadataWriter_AddRef(&This->IWICMetadataWriter_iface);
}
static ULONG WINAPI MetadataHandler_PersistStream_Release(IWICPersistStream *iface)
{
MetadataHandler *This = impl_from_IWICPersistStream(iface);
return IWICMetadataWriter_Release(&This->IWICMetadataWriter_iface);
}
static HRESULT WINAPI MetadataHandler_GetClassID(IWICPersistStream *iface,
CLSID *pClassID)
{
FIXME("(%p,%p): stub\n", iface, pClassID);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_IsDirty(IWICPersistStream *iface)
{
FIXME("(%p): stub\n", iface);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_Load(IWICPersistStream *iface,
IStream *pStm)
{
MetadataHandler *This = impl_from_IWICPersistStream(iface);
TRACE("(%p,%p)\n", iface, pStm);
return IWICPersistStream_LoadEx(&This->IWICPersistStream_iface, pStm, NULL, WICPersistOptionsDefault);
}
static HRESULT WINAPI MetadataHandler_Save(IWICPersistStream *iface,
IStream *pStm, BOOL fClearDirty)
{
FIXME("(%p,%p,%i): stub\n", iface, pStm, fClearDirty);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_GetSizeMax(IWICPersistStream *iface,
ULARGE_INTEGER *pcbSize)
{
FIXME("(%p,%p): stub\n", iface, pcbSize);
return E_NOTIMPL;
}
static HRESULT WINAPI MetadataHandler_LoadEx(IWICPersistStream *iface,
IStream *pIStream, const GUID *pguidPreferredVendor, DWORD dwPersistOptions)
{
MetadataHandler *This = impl_from_IWICPersistStream(iface);
HRESULT hr;
MetadataItem *new_items=NULL;
DWORD item_count=0;
TRACE("(%p,%p,%s,%x)\n", iface, pIStream, debugstr_guid(pguidPreferredVendor), dwPersistOptions);
EnterCriticalSection(&This->lock);
hr = This->vtable->fnLoad(pIStream, pguidPreferredVendor, dwPersistOptions,
&new_items, &item_count);
if (SUCCEEDED(hr))
{
MetadataHandler_FreeItems(This);
This->items = new_items;
This->item_count = item_count;
}
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI MetadataHandler_SaveEx(IWICPersistStream *iface,
IStream *pIStream, DWORD dwPersistOptions, BOOL fClearDirty)
{
FIXME("(%p,%p,%x,%i): stub\n", iface, pIStream, dwPersistOptions, fClearDirty);
return E_NOTIMPL;
}
static const IWICPersistStreamVtbl MetadataHandler_PersistStream_Vtbl = {
MetadataHandler_PersistStream_QueryInterface,
MetadataHandler_PersistStream_AddRef,
MetadataHandler_PersistStream_Release,
MetadataHandler_GetClassID,
MetadataHandler_IsDirty,
MetadataHandler_Load,
MetadataHandler_Save,
MetadataHandler_GetSizeMax,
MetadataHandler_LoadEx,
MetadataHandler_SaveEx
};
static HRESULT MetadataReader_Create(const MetadataHandlerVtbl *vtable, IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
MetadataHandler *This;
HRESULT hr;
TRACE("%s\n", debugstr_guid(vtable->clsid));
*ppv = NULL;
if (pUnkOuter) return CLASS_E_NOAGGREGATION;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(MetadataHandler));
if (!This) return E_OUTOFMEMORY;
This->IWICMetadataWriter_iface.lpVtbl = &MetadataHandler_Vtbl;
This->IWICPersistStream_iface.lpVtbl = &MetadataHandler_PersistStream_Vtbl;
This->ref = 1;
This->vtable = vtable;
This->items = NULL;
This->item_count = 0;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": MetadataHandler.lock");
hr = IWICMetadataWriter_QueryInterface(&This->IWICMetadataWriter_iface, iid, ppv);
IWICMetadataWriter_Release(&This->IWICMetadataWriter_iface);
return hr;
}
typedef struct MetadataHandlerEnum {
IWICEnumMetadataItem IWICEnumMetadataItem_iface;
LONG ref;
MetadataHandler *parent;
DWORD index;
} MetadataHandlerEnum;
static inline MetadataHandlerEnum *impl_from_IWICEnumMetadataItem(IWICEnumMetadataItem *iface)
{
return CONTAINING_RECORD(iface, MetadataHandlerEnum, IWICEnumMetadataItem_iface);
}
static HRESULT WINAPI MetadataHandlerEnum_QueryInterface(IWICEnumMetadataItem *iface, REFIID iid,
void **ppv)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICEnumMetadataItem, iid))
{
*ppv = &This->IWICEnumMetadataItem_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI MetadataHandlerEnum_AddRef(IWICEnumMetadataItem *iface)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI MetadataHandlerEnum_Release(IWICEnumMetadataItem *iface)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
IWICMetadataWriter_Release(&This->parent->IWICMetadataWriter_iface);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI MetadataHandlerEnum_Next(IWICEnumMetadataItem *iface,
ULONG celt, PROPVARIANT *rgeltSchema, PROPVARIANT *rgeltId,
PROPVARIANT *rgeltValue, ULONG *pceltFetched)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
ULONG new_index;
HRESULT hr=S_FALSE;
int i;
TRACE("(%p,%i)\n", iface, celt);
EnterCriticalSection(&This->parent->lock);
if (This->index >= This->parent->item_count)
{
*pceltFetched = 0;
LeaveCriticalSection(&This->parent->lock);
return S_FALSE;
}
new_index = min(This->parent->item_count, This->index + celt);
*pceltFetched = new_index - This->index;
if (rgeltSchema)
{
for (i=0; SUCCEEDED(hr) && i < *pceltFetched; i++)
hr = PropVariantCopy(&rgeltSchema[i], &This->parent->items[i+This->index].schema);
}
for (i=0; SUCCEEDED(hr) && i < *pceltFetched; i++)
hr = PropVariantCopy(&rgeltId[i], &This->parent->items[i+This->index].id);
if (rgeltValue)
{
for (i=0; SUCCEEDED(hr) && i < *pceltFetched; i++)
hr = PropVariantCopy(&rgeltValue[i], &This->parent->items[i+This->index].value);
}
if (SUCCEEDED(hr))
{
This->index = new_index;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI MetadataHandlerEnum_Skip(IWICEnumMetadataItem *iface,
ULONG celt)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
EnterCriticalSection(&This->parent->lock);
This->index += celt;
LeaveCriticalSection(&This->parent->lock);
return S_OK;
}
static HRESULT WINAPI MetadataHandlerEnum_Reset(IWICEnumMetadataItem *iface)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
EnterCriticalSection(&This->parent->lock);
This->index = 0;
LeaveCriticalSection(&This->parent->lock);
return S_OK;
}
static HRESULT WINAPI MetadataHandlerEnum_Clone(IWICEnumMetadataItem *iface,
IWICEnumMetadataItem **ppIEnumMetadataItem)
{
MetadataHandlerEnum *This = impl_from_IWICEnumMetadataItem(iface);
HRESULT hr;
EnterCriticalSection(&This->parent->lock);
hr = MetadataHandlerEnum_Create(This->parent, This->index, ppIEnumMetadataItem);
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static const IWICEnumMetadataItemVtbl MetadataHandlerEnum_Vtbl = {
MetadataHandlerEnum_QueryInterface,
MetadataHandlerEnum_AddRef,
MetadataHandlerEnum_Release,
MetadataHandlerEnum_Next,
MetadataHandlerEnum_Skip,
MetadataHandlerEnum_Reset,
MetadataHandlerEnum_Clone
};
static HRESULT MetadataHandlerEnum_Create(MetadataHandler *parent, DWORD index,
IWICEnumMetadataItem **ppIEnumMetadataItem)
{
MetadataHandlerEnum *This;
if (!ppIEnumMetadataItem) return E_INVALIDARG;
*ppIEnumMetadataItem = NULL;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(MetadataHandlerEnum));
if (!This) return E_OUTOFMEMORY;
IWICMetadataWriter_AddRef(&parent->IWICMetadataWriter_iface);
This->IWICEnumMetadataItem_iface.lpVtbl = &MetadataHandlerEnum_Vtbl;
This->ref = 1;
This->parent = parent;
This->index = index;
*ppIEnumMetadataItem = &This->IWICEnumMetadataItem_iface;
return S_OK;
}
static HRESULT LoadUnknownMetadata(IStream *input, const GUID *preferred_vendor,
DWORD persist_options, MetadataItem **items, DWORD *item_count)
{
HRESULT hr;
MetadataItem *result;
STATSTG stat;
BYTE *data;
ULONG bytesread;
TRACE("\n");
hr = IStream_Stat(input, &stat, STATFLAG_NONAME);
if (FAILED(hr))
return hr;
data = HeapAlloc(GetProcessHeap(), 0, stat.cbSize.QuadPart);
if (!data) return E_OUTOFMEMORY;
hr = IStream_Read(input, data, stat.cbSize.QuadPart, &bytesread);
if (bytesread != stat.cbSize.QuadPart) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, data);
return hr;
}
result = HeapAlloc(GetProcessHeap(), 0, sizeof(MetadataItem));
if (!result)
{
HeapFree(GetProcessHeap(), 0, data);
return E_OUTOFMEMORY;
}
PropVariantInit(&result[0].schema);
PropVariantInit(&result[0].id);
PropVariantInit(&result[0].value);
result[0].value.vt = VT_BLOB;
result[0].value.u.blob.cbSize = bytesread;
result[0].value.u.blob.pBlobData = data;
*items = result;
*item_count = 1;
return S_OK;
}
static const MetadataHandlerVtbl UnknownMetadataReader_Vtbl = {
0,
&CLSID_WICUnknownMetadataReader,
LoadUnknownMetadata
};
HRESULT UnknownMetadataReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
return MetadataReader_Create(&UnknownMetadataReader_Vtbl, pUnkOuter, iid, ppv);
}
#define SWAP_USHORT(x) do { if (!native_byte_order) (x) = RtlUshortByteSwap(x); } while(0)
#define SWAP_ULONG(x) do { if (!native_byte_order) (x) = RtlUlongByteSwap(x); } while(0)
#define SWAP_ULONGLONG(x) do { if (!native_byte_order) (x) = RtlUlonglongByteSwap(x); } while(0)
struct IFD_entry
{
SHORT id;
SHORT type;
ULONG count;
LONG value;
};
#define IFD_BYTE 1
#define IFD_ASCII 2
#define IFD_SHORT 3
#define IFD_LONG 4
#define IFD_RATIONAL 5
#define IFD_SBYTE 6
#define IFD_UNDEFINED 7
#define IFD_SSHORT 8
#define IFD_SLONG 9
#define IFD_SRATIONAL 10
#define IFD_FLOAT 11
#define IFD_DOUBLE 12
#define IFD_IFD 13
static int tag_to_vt(SHORT tag)
{
static const int tag2vt[] =
{
VT_EMPTY, /* 0 */
VT_UI1, /* IFD_BYTE 1 */
VT_LPSTR, /* IFD_ASCII 2 */
VT_UI2, /* IFD_SHORT 3 */
VT_UI4, /* IFD_LONG 4 */
VT_UI8, /* IFD_RATIONAL 5 */
VT_I1, /* IFD_SBYTE 6 */
VT_BLOB, /* IFD_UNDEFINED 7 */
VT_I2, /* IFD_SSHORT 8 */
VT_I4, /* IFD_SLONG 9 */
VT_I8, /* IFD_SRATIONAL 10 */
VT_R4, /* IFD_FLOAT 11 */
VT_R8, /* IFD_DOUBLE 12 */
VT_BLOB, /* IFD_IFD 13 */
};
return (tag > 0 && tag <= 13) ? tag2vt[tag] : VT_BLOB;
}
static HRESULT load_IFD_entry(IStream *input, const struct IFD_entry *entry,
MetadataItem *item, BOOL native_byte_order)
{
ULONG count, value, i, bytesread;
SHORT type;
LARGE_INTEGER pos;
HRESULT hr;
item->schema.vt = VT_EMPTY;
item->id.vt = VT_UI2;
item->id.u.uiVal = entry->id;
SWAP_USHORT(item->id.u.uiVal);
count = entry->count;
SWAP_ULONG(count);
type = entry->type;
SWAP_USHORT(type);
item->value.vt = tag_to_vt(type);
value = entry->value;
SWAP_ULONG(value);
switch (type)
{
case IFD_BYTE:
case IFD_SBYTE:
if (!count) count = 1;
if (count <= 4)
{
const BYTE *data = (const BYTE *)&entry->value;
if (count == 1)
item->value.u.bVal = data[0];
else
{
item->value.vt |= VT_VECTOR;
item->value.u.caub.cElems = count;
item->value.u.caub.pElems = HeapAlloc(GetProcessHeap(), 0, count);
memcpy(item->value.u.caub.pElems, data, count);
}
break;
}
item->value.vt |= VT_VECTOR;
item->value.u.caub.cElems = count;
item->value.u.caub.pElems = HeapAlloc(GetProcessHeap(), 0, count);
if (!item->value.u.caub.pElems) return E_OUTOFMEMORY;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.caub.pElems);
return hr;
}
hr = IStream_Read(input, item->value.u.caub.pElems, count, &bytesread);
if (bytesread != count) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.caub.pElems);
return hr;
}
break;
case IFD_SHORT:
case IFD_SSHORT:
if (!count) count = 1;
if (count <= 2)
{
const SHORT *data = (const SHORT *)&entry->value;
if (count == 1)
{
item->value.u.uiVal = data[0];
SWAP_USHORT(item->value.u.uiVal);
}
else
{
item->value.vt |= VT_VECTOR;
item->value.u.caui.cElems = count;
item->value.u.caui.pElems = HeapAlloc(GetProcessHeap(), 0, count * 2);
memcpy(item->value.u.caui.pElems, data, count * 2);
for (i = 0; i < count; i++)
SWAP_USHORT(item->value.u.caui.pElems[i]);
}
break;
}
item->value.vt |= VT_VECTOR;
item->value.u.caui.cElems = count;
item->value.u.caui.pElems = HeapAlloc(GetProcessHeap(), 0, count * 2);
if (!item->value.u.caui.pElems) return E_OUTOFMEMORY;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.caui.pElems);
return hr;
}
hr = IStream_Read(input, item->value.u.caui.pElems, count * 2, &bytesread);
if (bytesread != count * 2) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.caui.pElems);
return hr;
}
for (i = 0; i < count; i++)
SWAP_USHORT(item->value.u.caui.pElems[i]);
break;
case IFD_LONG:
case IFD_SLONG:
case IFD_FLOAT:
if (!count) count = 1;
if (count == 1)
{
item->value.u.ulVal = value;
break;
}
item->value.vt |= VT_VECTOR;
item->value.u.caul.cElems = count;
item->value.u.caul.pElems = HeapAlloc(GetProcessHeap(), 0, count * 4);
if (!item->value.u.caul.pElems) return E_OUTOFMEMORY;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.caul.pElems);
return hr;
}
hr = IStream_Read(input, item->value.u.caul.pElems, count * 4, &bytesread);
if (bytesread != count * 4) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.caul.pElems);
return hr;
}
for (i = 0; i < count; i++)
SWAP_ULONG(item->value.u.caul.pElems[i]);
break;
case IFD_RATIONAL:
case IFD_SRATIONAL:
case IFD_DOUBLE:
if (!count)
{
FIXME("IFD field type %d, count 0\n", type);
item->value.vt = VT_EMPTY;
break;
}
if (count == 1)
{
ULONGLONG ull;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr)) return hr;
hr = IStream_Read(input, &ull, sizeof(ull), &bytesread);
if (bytesread != sizeof(ull)) hr = E_FAIL;
if (hr != S_OK) return hr;
item->value.u.uhVal.QuadPart = ull;
if (type == IFD_DOUBLE)
SWAP_ULONGLONG(item->value.u.uhVal.QuadPart);
else
{
SWAP_ULONG(item->value.u.uhVal.u.LowPart);
SWAP_ULONG(item->value.u.uhVal.u.HighPart);
}
break;
}
else
{
item->value.vt |= VT_VECTOR;
item->value.u.cauh.cElems = count;
item->value.u.cauh.pElems = HeapAlloc(GetProcessHeap(), 0, count * 8);
if (!item->value.u.cauh.pElems) return E_OUTOFMEMORY;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.cauh.pElems);
return hr;
}
hr = IStream_Read(input, item->value.u.cauh.pElems, count * 8, &bytesread);
if (bytesread != count * 8) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.cauh.pElems);
return hr;
}
for (i = 0; i < count; i++)
{
if (type == IFD_DOUBLE)
SWAP_ULONGLONG(item->value.u.cauh.pElems[i].QuadPart);
else
{
SWAP_ULONG(item->value.u.cauh.pElems[i].u.LowPart);
SWAP_ULONG(item->value.u.cauh.pElems[i].u.HighPart);
}
}
}
break;
case IFD_ASCII:
item->value.u.pszVal = HeapAlloc(GetProcessHeap(), 0, count + 1);
if (!item->value.u.pszVal) return E_OUTOFMEMORY;
if (count <= 4)
{
const char *data = (const char *)&entry->value;
memcpy(item->value.u.pszVal, data, count);
item->value.u.pszVal[count] = 0;
break;
}
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.pszVal);
return hr;
}
hr = IStream_Read(input, item->value.u.pszVal, count, &bytesread);
if (bytesread != count) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.pszVal);
return hr;
}
item->value.u.pszVal[count] = 0;
break;
case IFD_UNDEFINED:
if (!count)
{
FIXME("IFD field type %d, count 0\n", type);
item->value.vt = VT_EMPTY;
break;
}
item->value.u.blob.pBlobData = HeapAlloc(GetProcessHeap(), 0, count);
if (!item->value.u.blob.pBlobData) return E_OUTOFMEMORY;
item->value.u.blob.cbSize = count;
if (count <= 4)
{
const char *data = (const char *)&entry->value;
memcpy(item->value.u.blob.pBlobData, data, count);
break;
}
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, item->value.u.blob.pBlobData);
return hr;
}
hr = IStream_Read(input, item->value.u.blob.pBlobData, count, &bytesread);
if (bytesread != count) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, item->value.u.blob.pBlobData);
return hr;
}
break;
default:
FIXME("loading field of type %d, count %u is not implemented\n", type, count);
break;
}
return S_OK;
}
static HRESULT LoadIfdMetadata(IStream *input, const GUID *preferred_vendor,
DWORD persist_options, MetadataItem **items, DWORD *item_count)
{
HRESULT hr;
MetadataItem *result;
USHORT count, i;
struct IFD_entry *entry;
BOOL native_byte_order = TRUE;
ULONG bytesread;
TRACE("\n");
#ifdef WORDS_BIGENDIAN
if (persist_options & WICPersistOptionsLittleEndian)
#else
if (persist_options & WICPersistOptionsBigEndian)
#endif
native_byte_order = FALSE;
hr = IStream_Read(input, &count, sizeof(count), &bytesread);
if (bytesread != sizeof(count)) hr = E_FAIL;
if (hr != S_OK) return hr;
SWAP_USHORT(count);
entry = HeapAlloc(GetProcessHeap(), 0, count * sizeof(*entry));
if (!entry) return E_OUTOFMEMORY;
hr = IStream_Read(input, entry, count * sizeof(*entry), &bytesread);
if (bytesread != count * sizeof(*entry)) hr = E_FAIL;
if (hr != S_OK)
{
HeapFree(GetProcessHeap(), 0, entry);
return hr;
}
/* limit number of IFDs to 4096 to avoid infinite loop */
for (i = 0; i < 4096; i++)
{
ULONG next_ifd_offset;
LARGE_INTEGER pos;
USHORT next_ifd_count;
hr = IStream_Read(input, &next_ifd_offset, sizeof(next_ifd_offset), &bytesread);
if (bytesread != sizeof(next_ifd_offset)) hr = E_FAIL;
if (hr != S_OK) break;
SWAP_ULONG(next_ifd_offset);
if (!next_ifd_offset) break;
pos.QuadPart = next_ifd_offset;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr)) break;
hr = IStream_Read(input, &next_ifd_count, sizeof(next_ifd_count), &bytesread);
if (bytesread != sizeof(next_ifd_count)) hr = E_FAIL;
if (hr != S_OK) break;
SWAP_USHORT(next_ifd_count);
pos.QuadPart = next_ifd_count * sizeof(*entry);
hr = IStream_Seek(input, pos, SEEK_CUR, NULL);
if (FAILED(hr)) break;
}
if (hr != S_OK || i == 4096)
{
HeapFree(GetProcessHeap(), 0, entry);
return WINCODEC_ERR_BADMETADATAHEADER;
}
result = HeapAlloc(GetProcessHeap(), 0, count * sizeof(*result));
if (!result)
{
HeapFree(GetProcessHeap(), 0, entry);
return E_OUTOFMEMORY;
}
for (i = 0; i < count; i++)
{
hr = load_IFD_entry(input, &entry[i], &result[i], native_byte_order);
if (FAILED(hr))
{
HeapFree(GetProcessHeap(), 0, entry);
HeapFree(GetProcessHeap(), 0, result);
return hr;
}
}
HeapFree(GetProcessHeap(), 0, entry);
*items = result;
*item_count = count;
return S_OK;
}
static const MetadataHandlerVtbl IfdMetadataReader_Vtbl = {
0,
&CLSID_WICIfdMetadataReader,
LoadIfdMetadata
};
HRESULT IfdMetadataReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv)
{
return MetadataReader_Create(&IfdMetadataReader_Vtbl, pUnkOuter, iid, ppv);
}
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