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windowscodecs: Add support for more types of IFD fields.

This commit is contained in:
Dmitry Timoshkov 2012-06-21 11:20:31 +09:00 committed by Alexandre Julliard
parent 220a55c36c
commit 281768f765
1 changed files with 40 additions and 5 deletions
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45
dlls/windowscodecs/metadatahandler.c
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@ -679,6 +679,28 @@ struct IFD_rational
#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)
{
@ -694,30 +716,44 @@ static HRESULT load_IFD_entry(IStream *input, const struct IFD_entry *entry,
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_SHORT:
case IFD_BYTE:
case IFD_SBYTE:
if (count == 1)
{
item->value.vt = VT_UI2;
item->value.u.uiVal = value;
item->value.u.bVal = *(const BYTE *)&entry->value;
break;
}
FIXME("loading multiple byte fields is not implemented\n");
break;
case IFD_SHORT:
case IFD_SSHORT:
if (count == 1)
{
item->value.u.uiVal = *(const SHORT *)&entry->value;
SWAP_USHORT(item->value.u.uiVal);
break;
}
FIXME("loading multiple short fields is not implemented\n");
break;
case IFD_LONG:
case IFD_SLONG:
case IFD_FLOAT:
if (count == 1)
{
item->value.vt = VT_UI4;
item->value.u.ulVal = value;
break;
}
FIXME("loading multiple long fields is not implemented\n");
break;
case IFD_RATIONAL:
case IFD_SRATIONAL:
case IFD_DOUBLE:
if (count == 1)
{
HRESULT hr;
@ -728,7 +764,6 @@ static HRESULT load_IFD_entry(IStream *input, const struct IFD_entry *entry,
hr = IStream_Seek(input, pos, SEEK_SET, NULL);
if (FAILED(hr)) return hr;
item->value.vt = VT_UI8;
hr = IStream_Read(input, &rational, sizeof(rational), NULL);
if (FAILED(hr)) return hr;
item->value.u.uhVal.QuadPart = ((LONGLONG)rational.denominator << 32) | rational.numerator;