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windowscodecs: Fix handling of 8-byte IFD fields.

This commit is contained in:
Dmitry Timoshkov 2012-06-21 11:20:46 +09:00 committed by Alexandre Julliard
parent aedd9271b7
commit 722cb46c05
1 changed files with 12 additions and 12 deletions
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22
dlls/windowscodecs/metadatahandler.c
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@ -649,7 +649,6 @@ HRESULT UnknownMetadataReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, vo
#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)
#include "pshpack2.h"
struct IFD_entry
{
SHORT id;
@ -658,13 +657,6 @@ struct IFD_entry
LONG value;
};
struct IFD_rational
{
LONG numerator;
LONG denominator;
};
#include "poppack.h"
#define IFD_BYTE 1
#define IFD_ASCII 2
#define IFD_SHORT 3
@ -840,16 +832,24 @@ static HRESULT load_IFD_entry(IStream *input, const struct IFD_entry *entry,
case IFD_DOUBLE:
if (count == 1)
{
struct IFD_rational rational;
ULONGLONG ull;
pos.QuadPart = value;
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr)) return hr;
hr = IStream_Read(input, &rational, sizeof(rational), NULL);
hr = IStream_Read(input, &ull, sizeof(ull), NULL);
if (FAILED(hr)) return hr;
item->value.u.uhVal.QuadPart = ((LONGLONG)rational.denominator << 32) | rational.numerator;
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;
}
FIXME("loading multiple rational fields is not implemented\n");