windowscodecs: Add test for PNG gAMA metadata.

dlls/windowscodecs/tests/metadata.c

@@ -137,6 +137,13 @@ static const char metadata_tEXt[] = {
     0x3f,0x64,0x19,0xf3 /* chunk CRC */
 };
 
+static const char metadata_gAMA[] = {
+    0,0,0,4, /* chunk length */
+    'g','A','M','A', /* chunk type */
+    0,0,130,53, /* gamma */
+    0xff,0xff,0xff,0xff /* chunk CRC */
+};
+
 static const char pngimage[285] = {
 0x89,0x50,0x4e,0x47,0x0d,0x0a,0x1a,0x0a,0x00,0x00,0x00,0x0d,0x49,0x48,0x44,0x52,
 0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x08,0x02,0x00,0x00,0x00,0x90,0x77,0x53,
@@ -405,6 +412,51 @@ static void test_metadata_tEXt(void)
     IWICMetadataReader_Release(reader);
 }
 
+static void test_metadata_gAMA(void)
+{
+    HRESULT hr;
+    IWICMetadataReader *reader;
+    PROPVARIANT schema, id, value;
+    ULONG count;
+    GUID format;
+    static const WCHAR ImageGamma[] = {'I','m','a','g','e','G','a','m','m','a',0};
+
+    PropVariantInit(&schema);
+    PropVariantInit(&id);
+    PropVariantInit(&value);
+
+    hr = CoCreateInstance(&CLSID_WICPngGamaMetadataReader, NULL, CLSCTX_INPROC_SERVER,
+        &IID_IWICMetadataReader, (void**)&reader);
+    todo_wine ok(hr == S_OK || broken(hr == REGDB_E_CLASSNOTREG) /*winxp*/, "CoCreateInstance failed, hr=%x\n", hr);
+    if (FAILED(hr)) return;
+
+    load_stream((IUnknown*)reader, metadata_gAMA, sizeof(metadata_gAMA), WICPersistOptionsDefault);
+
+    hr = IWICMetadataReader_GetMetadataFormat(reader, &format);
+    ok(hr == S_OK, "GetMetadataFormat failed, hr=%x\n", hr);
+    ok(IsEqualGUID(&format, &GUID_MetadataFormatChunkgAMA), "unexpected format %s\n", wine_dbgstr_guid(&format));
+
+    hr = IWICMetadataReader_GetCount(reader, &count);
+    ok(hr == S_OK, "GetCount failed, hr=%x\n", hr);
+    ok(count == 1, "unexpected count %i\n", count);
+
+    hr = IWICMetadataReader_GetValueByIndex(reader, 0, &schema, &id, &value);
+    ok(hr == S_OK, "GetValue failed, hr=%x\n", hr);
+
+    ok(schema.vt == VT_EMPTY, "unexpected vt: %i\n", schema.vt);
+    PropVariantClear(&schema);
+
+    ok(id.vt == VT_LPWSTR, "unexpected vt: %i\n", id.vt);
+    ok(!lstrcmpW(U(id).pwszVal, ImageGamma), "unexpected value: %s\n", wine_dbgstr_w(U(id).pwszVal));
+    PropVariantClear(&id);
+
+    ok(value.vt == VT_UI4, "unexpected vt: %i\n", value.vt);
+    ok(value.ulVal == 33333, "unexpected value: %u\n", value.ulVal);
+    PropVariantClear(&value);
+
+    IWICMetadataReader_Release(reader);
+}
+
 static inline USHORT ushort_bswap(USHORT s)
 {
     return (s >> 8) | (s << 8);
@@ -1805,6 +1857,7 @@ START_TEST(metadata)
 
     test_metadata_unknown();
     test_metadata_tEXt();
+    test_metadata_gAMA();
     test_metadata_IFD();
     test_metadata_Exif();
     test_create_reader();

include/wincodecsdk.idl

@@ -37,6 +37,7 @@ typedef enum WICMetadataCreationOptions {
 } WICMetadataCreationOptions;
 
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatUnknown, 0xa45e592f,0x9078,0x4a7c,0xad,0xb5,0x4e,0xdc,0x4f,0xd6,0x1b,0x1f);")
+cpp_quote("DEFINE_GUID(GUID_MetadataFormatChunkgAMA, 0xf00935a5,0x1d5d,0x4cd1,0x81,0xb2,0x93,0x24,0xd7,0xec,0xa7,0x81);")
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatChunktEXt, 0x568d8936,0xc0a9,0x4923,0x90,0x5d,0xdf,0x2b,0x38,0x23,0x8f,0xbc);")
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatChunktIME, 0x6b00ae2d,0xe24b,0x460a,0x98,0xb6,0x87,0x8b,0xd0,0x30,0x72,0xfd);")
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatIfd, 0x537396c6,0x2d8a,0x4bb6,0x9b,0xf8,0x2f,0x0a,0x8e,0x2a,0x3a,0xdf);")
@@ -51,6 +52,7 @@ cpp_quote("DEFINE_GUID(GUID_MetadataFormatGifComment, 0xc4b6e0e0,0xcfb4,0x4ad3,0
 
 cpp_quote("DEFINE_GUID(CLSID_WICUnknownMetadataReader, 0x699745c2,0x5066,0x4b82,0xa8,0xe3,0xd4,0x04,0x78,0xdb,0xec,0x8c);")
 cpp_quote("DEFINE_GUID(CLSID_WICUnknownMetadataWriter, 0xa09cca86,0x27ba,0x4f39,0x90,0x53,0x12,0x1f,0xa4,0xdc,0x08,0xfc);")
+cpp_quote("DEFINE_GUID(CLSID_WICPngGamaMetadataReader, 0x3692ca39,0xe082,0x4350,0x9e,0x1f,0x37,0x04,0xcb,0x08,0x3c,0xd5);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataReader, 0x4b59afcc,0xb8c3,0x408a,0xb6,0x70,0x89,0xe5,0xfa,0xb6,0xfd,0xa7);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataWriter, 0xb5ebafb9,0x253e,0x4a72,0xa7,0x44,0x07,0x62,0xd2,0x68,0x56,0x83);")
 cpp_quote("DEFINE_GUID(CLSID_WICIfdMetadataReader, 0x8f914656,0x9d0a,0x4eb2,0x90,0x19,0x0b,0xf9,0x6d,0x8a,0x9e,0xe6);")