windowscodecs: Implement Image Descriptor metadata reader.

dlls/windowscodecs/clsfactory.c

@@ -63,6 +63,7 @@ static const classinfo wic_classes[] = {
     {&CLSID_WICIfdMetadataReader, IfdMetadataReader_CreateInstance},
     {&CLSID_WICPngTextMetadataReader, PngTextReader_CreateInstance},
     {&CLSID_WICLSDMetadataReader, LSDReader_CreateInstance},
+    {&CLSID_WICIMDMetadataReader, IMDReader_CreateInstance},
     {0}};
 
 typedef struct {

dlls/windowscodecs/gifformat.c

@@ -146,6 +146,100 @@ HRESULT LSDReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv)
     return MetadataReader_Create(&LSDReader_Vtbl, pUnkOuter, iid, ppv);
 }
 
+static HRESULT load_IMD_metadata(IStream *stream, const GUID *vendor, DWORD options,
+                                 MetadataItem **items, DWORD *count)
+{
+    struct image_descriptor
+    {
+        USHORT left;
+        USHORT top;
+        USHORT width;
+        USHORT height;
+        BYTE packed;
+        /* local_color_table_flag : 1;
+         * interlace_flag : 1;
+         * sort_flag : 1;
+         * reserved : 2;
+         * local_color_table_size : 3;
+         */
+    } imd_data;
+    HRESULT hr;
+    ULONG bytesread, i;
+    MetadataItem *result;
+
+    *items = NULL;
+    *count = 0;
+
+    hr = IStream_Read(stream, &imd_data, sizeof(imd_data), &bytesread);
+    if (FAILED(hr) || bytesread != sizeof(imd_data)) return S_OK;
+
+    result = HeapAlloc(GetProcessHeap(), 0, sizeof(MetadataItem) * 8);
+    if (!result) return E_OUTOFMEMORY;
+
+    for (i = 0; i < 8; i++)
+    {
+        PropVariantInit(&result[i].schema);
+        PropVariantInit(&result[i].id);
+        PropVariantInit(&result[i].value);
+    }
+
+    result[0].id.vt = VT_LPWSTR;
+    result[0].id.u.pwszVal = strdupAtoW("Left");
+    result[0].value.vt = VT_UI2;
+    result[0].value.u.uiVal = imd_data.left;
+
+    result[1].id.vt = VT_LPWSTR;
+    result[1].id.u.pwszVal = strdupAtoW("Top");
+    result[1].value.vt = VT_UI2;
+    result[1].value.u.uiVal = imd_data.top;
+
+    result[2].id.vt = VT_LPWSTR;
+    result[2].id.u.pwszVal = strdupAtoW("Width");
+    result[2].value.vt = VT_UI2;
+    result[2].value.u.uiVal = imd_data.width;
+
+    result[3].id.vt = VT_LPWSTR;
+    result[3].id.u.pwszVal = strdupAtoW("Height");
+    result[3].value.vt = VT_UI2;
+    result[3].value.u.uiVal = imd_data.height;
+
+    result[4].id.vt = VT_LPWSTR;
+    result[4].id.u.pwszVal = strdupAtoW("LocalColorTableFlag");
+    result[4].value.vt = VT_BOOL;
+    result[4].value.u.boolVal = (imd_data.packed >> 7) & 1;
+
+    result[5].id.vt = VT_LPWSTR;
+    result[5].id.u.pwszVal = strdupAtoW("InterlaceFlag");
+    result[5].value.vt = VT_BOOL;
+    result[5].value.u.boolVal = (imd_data.packed >> 6) & 1;
+
+    result[6].id.vt = VT_LPWSTR;
+    result[6].id.u.pwszVal = strdupAtoW("SortFlag");
+    result[6].value.vt = VT_BOOL;
+    result[6].value.u.boolVal = (imd_data.packed >> 5) & 1;
+
+    result[7].id.vt = VT_LPWSTR;
+    result[7].id.u.pwszVal = strdupAtoW("LocalColorTableSize");
+    result[7].value.vt = VT_UI1;
+    result[7].value.u.bVal = imd_data.packed & 7;
+
+    *items = result;
+    *count = 8;
+
+    return S_OK;
+}
+
+static const MetadataHandlerVtbl IMDReader_Vtbl = {
+    0,
+    &CLSID_WICIMDMetadataReader,
+    load_IMD_metadata
+};
+
+HRESULT IMDReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv)
+{
+    return MetadataReader_Create(&IMDReader_Vtbl, pUnkOuter, iid, ppv);
+}
+
 typedef struct {
     IWICBitmapDecoder IWICBitmapDecoder_iface;
     LONG ref;

dlls/windowscodecs/regsvr.c

@@ -1532,6 +1532,21 @@ static const struct reader_containers lsd_containers[] = {
     { NULL } /* list terminator */
 };
 
+static const BYTE imd_magic[] = { 0x2c };
+
+static const struct metadata_pattern imd_metadata_pattern[] = {
+    { 0, 1, imd_magic, mask_all, 1 },
+    { 0 }
+};
+
+static const struct reader_containers imd_containers[] = {
+    {
+        &GUID_ContainerFormatGif,
+        imd_metadata_pattern
+    },
+    { NULL } /* list terminator */
+};
+
 static struct regsvr_metadatareader const metadatareader_list[] = {
     {   &CLSID_WICUnknownMetadataReader,
         "The Wine Project",
@@ -1573,6 +1588,16 @@ static struct regsvr_metadatareader const metadatareader_list[] = {
         0, 0, 0,
         lsd_containers
     },
+    {   &CLSID_WICIMDMetadataReader,
+        "The Wine Project",
+        "Image Descriptor Reader",
+        "1.0.0.0",
+        "1.0.0.0",
+        &GUID_VendorMicrosoft,
+        &GUID_MetadataFormatIMD,
+        0, 0, 0,
+        imd_containers
+    },
     { NULL }			/* list terminator */
 };
 

dlls/windowscodecs/tests/metadata.c

@@ -1365,7 +1365,6 @@ static void test_metadata_IMD(void)
 
     hr = CoCreateInstance(&CLSID_WICIMDMetadataReader, NULL, CLSCTX_INPROC_SERVER,
                           &IID_IWICMetadataReader, (void **)&reader);
-todo_wine
     ok(hr == S_OK || broken(hr == E_NOINTERFACE || hr == REGDB_E_CLASSNOTREG) /* before Win7 */,
        "CoCreateInstance error %#x\n", hr);
 

dlls/windowscodecs/wincodecs_private.h

@@ -96,5 +96,6 @@ extern HRESULT UnknownMetadataReader_CreateInstance(IUnknown *pUnkOuter, REFIID
 extern HRESULT IfdMetadataReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv) DECLSPEC_HIDDEN;
 extern HRESULT PngTextReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv) DECLSPEC_HIDDEN;
 extern HRESULT LSDReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv) DECLSPEC_HIDDEN;
+extern HRESULT IMDReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv) DECLSPEC_HIDDEN;
 
 #endif /* WINCODECS_PRIVATE_H */

dlls/windowscodecs/windowscodecs_wincodec.idl

@@ -149,3 +149,10 @@ coclass WICPngTextMetadataReader { interface IWICMetadataReader; }
     uuid(41070793-59e4-479a-a1f7-954adc2ef5fc)
 ]
 coclass WICLSDMetadataReader { interface IWICMetadataReader; }
+
+[
+    helpstring("WIC IMD Metadata Reader"),
+    threading(both),
+    uuid(7447a267-0015-42c8-a8f1-fb3b94c68361)
+]
+coclass WICIMDMetadataReader { interface IWICMetadataReader; }