windowscodecs: Add some tests for GIF global palette.

dlls/windowscodecs/tests/gifformat.c

@@ -25,6 +25,14 @@
 #include "wincodec.h"
 #include "wine/test.h"
 
+static const char gif_global_palette[] = {
+/* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0xa1,0x02,0x00,
+/* palette */0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,
+/* GCE */0x21,0xf9,0x04,0x01,0x05,0x00,0x01,0x00, /* index 1 */
+/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
+0x02,0x02,0x44,0x01,0x00,0x3b
+};
+
 static const char gif_local_palette[] = {
 /* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x27,0x02,0x00,
 /* GCE */0x21,0xf9,0x04,0x01,0x05,0x00,0x01,0x00, /* index 1 */
@@ -77,6 +85,70 @@ static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size
     return decoder;
 }
 
+static void test_global_gif_palette(void)
+{
+    HRESULT hr;
+    IWICBitmapDecoder *decoder;
+    IWICBitmapFrameDecode *frame;
+    IWICPalette *palette;
+    GUID format;
+    UINT count, ret;
+    WICColor color[256];
+
+    decoder = create_decoder(gif_global_palette, sizeof(gif_global_palette));
+    ok(decoder != 0, "Failed to load GIF image data\n");
+
+    hr = IWICImagingFactory_CreatePalette(factory, &palette);
+    ok(hr == S_OK, "CreatePalette error %#x\n", hr);
+
+    /* global palette */
+    hr = IWICBitmapDecoder_CopyPalette(decoder, palette);
+todo_wine
+    ok(hr == S_OK, "CopyPalette error %#x\n", hr);
+
+    hr = IWICPalette_GetColorCount(palette, &count);
+    ok(hr == S_OK, "GetColorCount error %#x\n", hr);
+todo_wine
+    ok(count == 4, "expected 4, got %u\n", count);
+
+    hr = IWICPalette_GetColors(palette, count, color, &ret);
+    ok(hr == S_OK, "GetColors error %#x\n", hr);
+    ok(ret == count, "expected %u, got %u\n", count, ret);
+todo_wine {
+    ok(color[0] == 0xff010203, "expected 0xff010203, got %#x\n", color[0]);
+    ok(color[1] == 0x00040506, "expected 0x00040506, got %#x\n", color[1]);
+    ok(color[2] == 0xff070809, "expected 0xff070809, got %#x\n", color[2]);
+    ok(color[3] == 0xff0a0b0c, "expected 0xff0a0b0c, got %#x\n", color[3]);
+}
+    /* frame palette */
+    hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
+    ok(hr == S_OK, "GetFrame error %#x\n", hr);
+
+    hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
+    ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
+    ok(IsEqualGUID(&format, &GUID_WICPixelFormat8bppIndexed),
+       "wrong pixel format %s\n", debugstr_guid(&format));
+
+    hr = IWICBitmapFrameDecode_CopyPalette(frame, palette);
+    ok(hr == S_OK, "CopyPalette error %#x\n", hr);
+
+    hr = IWICPalette_GetColorCount(palette, &count);
+    ok(hr == S_OK, "GetColorCount error %#x\n", hr);
+    ok(count == 4, "expected 4, got %u\n", count);
+
+    hr = IWICPalette_GetColors(palette, count, color, &ret);
+    ok(hr == S_OK, "GetColors error %#x\n", hr);
+    ok(ret == count, "expected %u, got %u\n", count, ret);
+    ok(color[0] == 0xff010203, "expected 0xff010203, got %#x\n", color[0]);
+    ok(color[1] == 0x00040506, "expected 0x00040506, got %#x\n", color[1]);
+    ok(color[2] == 0xff070809, "expected 0xff070809, got %#x\n", color[2]);
+    ok(color[3] == 0xff0a0b0c, "expected 0xff0a0b0c, got %#x\n", color[3]);
+
+    IWICPalette_Release(palette);
+    IWICBitmapFrameDecode_Release(frame);
+    IWICBitmapDecoder_Release(decoder);
+}
+
 static void test_local_gif_palette(void)
 {
     HRESULT hr;
@@ -137,6 +209,7 @@ START_TEST(gifformat)
     ok(hr == S_OK, "CoCreateInstance error %#x\n", hr);
     if (FAILED(hr)) return;
 
+    test_global_gif_palette();
     test_local_gif_palette();
 
     IWICImagingFactory_Release(factory);