dlls/windowscodecs/tests/gifformat.c - wine - Git at Google

 /*
  * Copyright 2012 Dmitry Timoshkov
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #include <stdarg.h>
 #include <stdio.h>

 #define COBJMACROS

 #include "windef.h"
 #include "wincodec.h"
 #include "wine/test.h"

 HRESULT WINAPI WICCreateImagingFactory_Proxy(UINT, IWICImagingFactory**);

 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
 };

 /* frame 0, GCE transparent index 1
  * frame 1, GCE transparent index 2
  */
 static const char gif_global_palette_2frames[] = {
 /* LSD */'G','I','F','8','9','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,
 /* GCE */0x21,0xf9,0x04,0x01,0x05,0x00,0x02,0x00, /* index 2 */
 /* 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 */
 /* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x81,
 /* palette */0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,
 0x02,0x02,0x44,0x01,0x00,0x3b
 };

 /* Generated with ImageMagick:
  * convert -delay 100 -size 2x2 xc:red \
  *     -dispose none -page +0+0 -size 2x1 xc:white \
  *     test.gif
  */
 static const char gif_frame_sizes[] = {
     0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x02, 0x00,
     0x02, 0x00, 0xf1, 0x00, 0x00, 0xff, 0x00, 0x00,
     0xff, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0x00,
     0x00, 0x21, 0xf9, 0x04, 0x00, 0x64, 0x00, 0x00,
     0x00, 0x21, 0xff, 0x0b, 0x4e, 0x45, 0x54, 0x53,
     0x43, 0x41, 0x50, 0x45, 0x32, 0x2e, 0x30, 0x03,
     0x01, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00,
     0x00, 0x02, 0x00, 0x02, 0x00, 0x00, 0x02, 0x03,
     0x44, 0x34, 0x05, 0x00, 0x21, 0xf9, 0x04, 0x04,
     0x64, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00,
     0x00, 0x02, 0x00, 0x01, 0x00, 0x80, 0xff, 0xff,
     0xff, 0x00, 0x00, 0x00, 0x02, 0x02, 0x04, 0x0a,
     0x00, 0x3b
 };

 static IWICImagingFactory *factory;

 static IStream *create_stream(const void *image_data, UINT image_size)
 {
     HGLOBAL hmem;
     BYTE *data;
     HRESULT hr;
     IStream *stream;

     hmem = GlobalAlloc(0, image_size);
     data = GlobalLock(hmem);
     memcpy(data, image_data, image_size);
     GlobalUnlock(hmem);

     hr = CreateStreamOnHGlobal(hmem, TRUE, &stream);
     ok(hr == S_OK, "CreateStreamOnHGlobal error %#x\n", hr);

     return stream;
 }

 static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size)
 {
     HRESULT hr;
     IWICBitmapDecoder *decoder;
     IStream *stream;
     GUID format;
     LONG refcount;

     stream = create_stream(image_data, image_size);
     if (!stream) return NULL;

     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);

     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
        "wrong container format %s\n", wine_dbgstr_guid(&format));

     refcount = IStream_Release(stream);
     ok(refcount > 0, "expected stream refcount > 0\n");

     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);
     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]);

     /* 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", wine_dbgstr_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_global_gif_palette_2frames(void)
 {
     HRESULT hr;
     IWICBitmapDecoder *decoder;
     IWICBitmapFrameDecode *frame;
     IWICPalette *palette;
     GUID format;
     UINT count, ret;
     WICColor color[256];

     decoder = create_decoder(gif_global_palette_2frames, sizeof(gif_global_palette_2frames));
     ok(decoder != 0, "Failed to load GIF image data\n");

     /* active frame 0, GCE transparent index 1 */
     hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
     ok(hr == S_OK, "GetFrame error %#x\n", hr);

     hr = IWICImagingFactory_CreatePalette(factory, &palette);
     ok(hr == S_OK, "CreatePalette error %#x\n", hr);

     /* global palette */
     hr = IWICBitmapDecoder_CopyPalette(decoder, 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]);

     /* frame 0 palette */
     hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
     ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_WICPixelFormat8bppIndexed),
        "wrong pixel format %s\n", wine_dbgstr_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]);

     IWICBitmapFrameDecode_Release(frame);

     /* active frame 1, GCE transparent index 2 */
     hr = IWICBitmapDecoder_GetFrame(decoder, 1, &frame);
     ok(hr == S_OK, "GetFrame error %#x\n", hr);

     /* global palette */
     hr = IWICBitmapDecoder_CopyPalette(decoder, 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] == 0xff040506 || broken(color[1] == 0x00040506) /* XP */, "expected 0xff040506, got %#x\n", color[1]);
     ok(color[2] == 0x00070809 || broken(color[2] == 0xff070809) /* XP */, "expected 0x00070809, got %#x\n", color[2]);
     ok(color[3] == 0xff0a0b0c, "expected 0xff0a0b0c, got %#x\n", color[3]);

     /* frame 1 palette */
     hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
     ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_WICPixelFormat8bppIndexed),
        "wrong pixel format %s\n", wine_dbgstr_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] == 0xff040506, "expected 0xff040506, got %#x\n", color[1]);
     ok(color[2] == 0x00070809, "expected 0x00070809, 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;
     IWICBitmapDecoder *decoder;
     IWICBitmapFrameDecode *frame;
     IWICPalette *palette;
     WICBitmapPaletteType type;
     GUID format;
     UINT count, ret, i;
     WICColor color[256];

     decoder = create_decoder(gif_local_palette, sizeof(gif_local_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);
     ok(hr == S_OK || broken(hr == WINCODEC_ERR_FRAMEMISSING), "CopyPalette %#x\n", hr);
     if (hr == S_OK)
     {
         type = -1;
         hr = IWICPalette_GetType(palette, &type);
         ok(hr == S_OK, "GetType error %#x\n", hr);
         ok(type == WICBitmapPaletteTypeCustom, "expected WICBitmapPaletteTypeCustom, got %#x\n", type);

         hr = IWICPalette_GetColorCount(palette, &count);
         ok(hr == S_OK, "GetColorCount error %#x\n", hr);
         ok(count == 256, "expected 256, 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] == 0xff000000, "expected 0xff000000, got %#x\n", color[0]);
         ok(color[1] == 0x00ffffff, "expected 0x00ffffff, got %#x\n", color[1]);

         for (i = 2; i < 256; i++)
             ok(color[i] == 0xff000000, "expected 0xff000000, got %#x\n", color[i]);
     }

     /* 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", wine_dbgstr_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);

     type = -1;
     hr = IWICPalette_GetType(palette, &type);
     ok(hr == S_OK, "GetType error %#x\n", hr);
     ok(type == WICBitmapPaletteTypeCustom, "expected WICBitmapPaletteTypeCustom, got %#x\n", type);

     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_gif_frame_sizes(void)
 {
     static const BYTE frame0[] = {0, 1, 0xfe, 0xfe, 2, 3, 0xfe, 0xfe};
     static const BYTE frame1[] = {0, 0, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe};

     IWICBitmapDecoder *decoder;
     IWICBitmapFrameDecode *frame;
     UINT width, height;
     BYTE buf[8];
     HRESULT hr;

     decoder = create_decoder(gif_frame_sizes, sizeof(gif_frame_sizes));
     ok(decoder != 0, "Failed to load GIF image data\n");

     hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
     ok(hr == S_OK, "GetFrame error %#x\n", hr);

     hr = IWICBitmapFrameDecode_GetSize(frame, &width, &height);
     ok(hr == S_OK, "GetSize error %x\n", hr);
     ok(width == 2, "width = %d\n", width);
     ok(height == 2, "height = %d\n", height);

     memset(buf, 0xfe, sizeof(buf));
     hr = IWICBitmapFrameDecode_CopyPixels(frame, NULL, 4, sizeof(buf), buf);
     ok(hr == S_OK, "CopyPixels error %x\n", hr);
     ok(!memcmp(buf, frame0, sizeof(buf)), "buf = %x %x %x %x %x %x %x %x\n",
             buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);

     IWICBitmapFrameDecode_Release(frame);

     hr = IWICBitmapDecoder_GetFrame(decoder, 1, &frame);
     ok(hr == S_OK, "GetFrame error %#x\n", hr);

     hr = IWICBitmapFrameDecode_GetSize(frame, &width, &height);
     ok(hr == S_OK, "GetSize error %x\n", hr);
     ok(width == 2, "width = %d\n", width);
     ok(height == 1, "height = %d\n", height);

     memset(buf, 0xfe, sizeof(buf));
     hr = IWICBitmapFrameDecode_CopyPixels(frame, NULL, 4, sizeof(buf), buf);
     ok(hr == S_OK, "CopyPixels error %x\n", hr);
     ok(!memcmp(buf, frame1, sizeof(buf)), "buf = %x %x %x %x %x %x %x %x\n",
             buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);

     IWICBitmapFrameDecode_Release(frame);

     IWICBitmapDecoder_Release(decoder);
 }

 static const char gif_with_trailer_1[] = {
 /* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x80,0x00,0x00,
 /* palette */0xff,0xff,0xff,0xff,0xff,0xff,
 /* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
 /* image data */0x02,0x02,0x44,0x01,0x00,0x3b
 };
 static const char gif_with_trailer_2[] = {
 /* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x00,0x00,0x00,
 /* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
 /* image data */0x02,0x02,0x44,0x3b
 };
 static const char gif_without_trailer_1[] = {
 /* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x80,0x00,0x00,
 /* palette */0xff,0xff,0xff,0xff,0xff,0xff,
 /* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
 /* image data */0x02,0x02,0x44,0xde,0xad,0xbe,0xef,0xde,0xad,0xbe,0xef
 };

 static const char gif_without_trailer_2[] = {
 /* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x00,0x00,0x00,
 /* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
 /* image data */0x02,0x02,0x44,0xde,0xad,0xbe,0xef,0xde,0xad,0xbe,0xef
 };

 static void test_truncated_gif(void)
 {
     HRESULT hr;
     IStream *stream;
     IWICBitmapDecoder *decoder;
     GUID format;

     stream = create_stream(gif_with_trailer_1, sizeof(gif_with_trailer_1));
     if (!stream) return;

     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
        "wrong container format %s\n", wine_dbgstr_guid(&format));
     IWICBitmapDecoder_Release(decoder);
     IStream_Release(stream);

     stream = create_stream(gif_with_trailer_2, sizeof(gif_with_trailer_2));
     if (!stream) return;
     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
        "wrong container format %s\n", wine_dbgstr_guid(&format));
     IWICBitmapDecoder_Release(decoder);
     IStream_Release(stream);

     stream = create_stream(gif_without_trailer_1, sizeof(gif_without_trailer_1));
     if (!stream) return;
     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
        "wrong container format %s\n", wine_dbgstr_guid(&format));
     IWICBitmapDecoder_Release(decoder);
     IStream_Release(stream);

     stream = create_stream(gif_without_trailer_2, sizeof(gif_without_trailer_2));
     if (!stream) return;
     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
        "wrong container format %s\n", wine_dbgstr_guid(&format));
     IWICBitmapDecoder_Release(decoder);
     IStream_Release(stream);
 }

 START_TEST(gifformat)
 {
     HRESULT hr;

     CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
     hr = CoCreateInstance(&CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER,
                           &IID_IWICImagingFactory, (void **)&factory);
     ok(hr == S_OK, "CoCreateInstance error %#x\n", hr);
     if (FAILED(hr)) return;

     test_global_gif_palette();
     test_global_gif_palette_2frames();
     test_local_gif_palette();
     test_gif_frame_sizes();

     IWICImagingFactory_Release(factory);
     CoUninitialize();

     /* run the same tests with no COM initialization */
     hr = WICCreateImagingFactory_Proxy(WINCODEC_SDK_VERSION, &factory);
     ok(hr == S_OK, "WICCreateImagingFactory_Proxy error %#x\n", hr);

     test_global_gif_palette();
     test_global_gif_palette_2frames();
     test_local_gif_palette();
     test_gif_frame_sizes();
     test_truncated_gif();

     IWICImagingFactory_Release(factory);
 }
	/*
	* Copyright 2012 Dmitry Timoshkov
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#include <stdarg.h>
	#include <stdio.h>

	#define COBJMACROS

	#include "windef.h"
	#include "wincodec.h"
	#include "wine/test.h"

	HRESULT WINAPI WICCreateImagingFactory_Proxy(UINT, IWICImagingFactory**);

	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
	};

	/* frame 0, GCE transparent index 1
	* frame 1, GCE transparent index 2
	*/
	static const char gif_global_palette_2frames[] = {
	/* LSD */'G','I','F','8','9','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,
	/* GCE /0x21,0xf9,0x04,0x01,0x05,0x00,0x02,0x00, / index 2 */
	/* 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 */
	/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x81,
	/* palette */0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,
	0x02,0x02,0x44,0x01,0x00,0x3b
	};

	/* Generated with ImageMagick:
	* convert -delay 100 -size 2x2 xc:red \
	* -dispose none -page +0+0 -size 2x1 xc:white \
	* test.gif
	*/
	static const char gif_frame_sizes[] = {
	0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x02, 0x00,
	0x02, 0x00, 0xf1, 0x00, 0x00, 0xff, 0x00, 0x00,
	0xff, 0x00, 0x00, 0xff, 0x00, 0x00, 0xff, 0x00,
	0x00, 0x21, 0xf9, 0x04, 0x00, 0x64, 0x00, 0x00,
	0x00, 0x21, 0xff, 0x0b, 0x4e, 0x45, 0x54, 0x53,
	0x43, 0x41, 0x50, 0x45, 0x32, 0x2e, 0x30, 0x03,
	0x01, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00,
	0x00, 0x02, 0x00, 0x02, 0x00, 0x00, 0x02, 0x03,
	0x44, 0x34, 0x05, 0x00, 0x21, 0xf9, 0x04, 0x04,
	0x64, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00,
	0x00, 0x02, 0x00, 0x01, 0x00, 0x80, 0xff, 0xff,
	0xff, 0x00, 0x00, 0x00, 0x02, 0x02, 0x04, 0x0a,
	0x00, 0x3b
	};

	static IWICImagingFactory *factory;

	static IStream create_stream(const void image_data, UINT image_size)
	{
	HGLOBAL hmem;
	BYTE *data;
	HRESULT hr;
	IStream *stream;

	hmem = GlobalAlloc(0, image_size);
	data = GlobalLock(hmem);
	memcpy(data, image_data, image_size);
	GlobalUnlock(hmem);

	hr = CreateStreamOnHGlobal(hmem, TRUE, &stream);
	ok(hr == S_OK, "CreateStreamOnHGlobal error %#x\n", hr);

	return stream;
	}

	static IWICBitmapDecoder create_decoder(const void image_data, UINT image_size)
	{
	HRESULT hr;
	IWICBitmapDecoder *decoder;
	IStream *stream;
	GUID format;
	LONG refcount;

	stream = create_stream(image_data, image_size);
	if (!stream) return NULL;

	hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
	ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);

	hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
	ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
	"wrong container format %s\n", wine_dbgstr_guid(&format));

	refcount = IStream_Release(stream);
	ok(refcount > 0, "expected stream refcount > 0\n");

	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);
	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]);

	/* 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", wine_dbgstr_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_global_gif_palette_2frames(void)
	{
	HRESULT hr;
	IWICBitmapDecoder *decoder;
	IWICBitmapFrameDecode *frame;
	IWICPalette *palette;
	GUID format;
	UINT count, ret;
	WICColor color[256];

	decoder = create_decoder(gif_global_palette_2frames, sizeof(gif_global_palette_2frames));
	ok(decoder != 0, "Failed to load GIF image data\n");

	/* active frame 0, GCE transparent index 1 */
	hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
	ok(hr == S_OK, "GetFrame error %#x\n", hr);

	hr = IWICImagingFactory_CreatePalette(factory, &palette);
	ok(hr == S_OK, "CreatePalette error %#x\n", hr);

	/* global palette */
	hr = IWICBitmapDecoder_CopyPalette(decoder, 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]);

	/* frame 0 palette */
	hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
	ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_WICPixelFormat8bppIndexed),
	"wrong pixel format %s\n", wine_dbgstr_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]);

	IWICBitmapFrameDecode_Release(frame);

	/* active frame 1, GCE transparent index 2 */
	hr = IWICBitmapDecoder_GetFrame(decoder, 1, &frame);
	ok(hr == S_OK, "GetFrame error %#x\n", hr);

	/* global palette */
	hr = IWICBitmapDecoder_CopyPalette(decoder, 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] == 0xff040506 \|\| broken(color[1] == 0x00040506) /* XP */, "expected 0xff040506, got %#x\n", color[1]);
	ok(color[2] == 0x00070809 \|\| broken(color[2] == 0xff070809) /* XP */, "expected 0x00070809, got %#x\n", color[2]);
	ok(color[3] == 0xff0a0b0c, "expected 0xff0a0b0c, got %#x\n", color[3]);

	/* frame 1 palette */
	hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
	ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_WICPixelFormat8bppIndexed),
	"wrong pixel format %s\n", wine_dbgstr_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] == 0xff040506, "expected 0xff040506, got %#x\n", color[1]);
	ok(color[2] == 0x00070809, "expected 0x00070809, 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;
	IWICBitmapDecoder *decoder;
	IWICBitmapFrameDecode *frame;
	IWICPalette *palette;
	WICBitmapPaletteType type;
	GUID format;
	UINT count, ret, i;
	WICColor color[256];

	decoder = create_decoder(gif_local_palette, sizeof(gif_local_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);
	ok(hr == S_OK \|\| broken(hr == WINCODEC_ERR_FRAMEMISSING), "CopyPalette %#x\n", hr);
	if (hr == S_OK)
	{
	type = -1;
	hr = IWICPalette_GetType(palette, &type);
	ok(hr == S_OK, "GetType error %#x\n", hr);
	ok(type == WICBitmapPaletteTypeCustom, "expected WICBitmapPaletteTypeCustom, got %#x\n", type);

	hr = IWICPalette_GetColorCount(palette, &count);
	ok(hr == S_OK, "GetColorCount error %#x\n", hr);
	ok(count == 256, "expected 256, 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] == 0xff000000, "expected 0xff000000, got %#x\n", color[0]);
	ok(color[1] == 0x00ffffff, "expected 0x00ffffff, got %#x\n", color[1]);

	for (i = 2; i < 256; i++)
	ok(color[i] == 0xff000000, "expected 0xff000000, got %#x\n", color[i]);
	}

	/* 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", wine_dbgstr_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);

	type = -1;
	hr = IWICPalette_GetType(palette, &type);
	ok(hr == S_OK, "GetType error %#x\n", hr);
	ok(type == WICBitmapPaletteTypeCustom, "expected WICBitmapPaletteTypeCustom, got %#x\n", type);

	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_gif_frame_sizes(void)
	{
	static const BYTE frame0[] = {0, 1, 0xfe, 0xfe, 2, 3, 0xfe, 0xfe};
	static const BYTE frame1[] = {0, 0, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe};

	IWICBitmapDecoder *decoder;
	IWICBitmapFrameDecode *frame;
	UINT width, height;
	BYTE buf[8];
	HRESULT hr;

	decoder = create_decoder(gif_frame_sizes, sizeof(gif_frame_sizes));
	ok(decoder != 0, "Failed to load GIF image data\n");

	hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
	ok(hr == S_OK, "GetFrame error %#x\n", hr);

	hr = IWICBitmapFrameDecode_GetSize(frame, &width, &height);
	ok(hr == S_OK, "GetSize error %x\n", hr);
	ok(width == 2, "width = %d\n", width);
	ok(height == 2, "height = %d\n", height);

	memset(buf, 0xfe, sizeof(buf));
	hr = IWICBitmapFrameDecode_CopyPixels(frame, NULL, 4, sizeof(buf), buf);
	ok(hr == S_OK, "CopyPixels error %x\n", hr);
	ok(!memcmp(buf, frame0, sizeof(buf)), "buf = %x %x %x %x %x %x %x %x\n",
	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);

	IWICBitmapFrameDecode_Release(frame);

	hr = IWICBitmapDecoder_GetFrame(decoder, 1, &frame);
	ok(hr == S_OK, "GetFrame error %#x\n", hr);

	hr = IWICBitmapFrameDecode_GetSize(frame, &width, &height);
	ok(hr == S_OK, "GetSize error %x\n", hr);
	ok(width == 2, "width = %d\n", width);
	ok(height == 1, "height = %d\n", height);

	memset(buf, 0xfe, sizeof(buf));
	hr = IWICBitmapFrameDecode_CopyPixels(frame, NULL, 4, sizeof(buf), buf);
	ok(hr == S_OK, "CopyPixels error %x\n", hr);
	ok(!memcmp(buf, frame1, sizeof(buf)), "buf = %x %x %x %x %x %x %x %x\n",
	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);

	IWICBitmapFrameDecode_Release(frame);

	IWICBitmapDecoder_Release(decoder);
	}

	static const char gif_with_trailer_1[] = {
	/* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x80,0x00,0x00,
	/* palette */0xff,0xff,0xff,0xff,0xff,0xff,
	/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
	/* image data */0x02,0x02,0x44,0x01,0x00,0x3b
	};
	static const char gif_with_trailer_2[] = {
	/* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x00,0x00,0x00,
	/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
	/* image data */0x02,0x02,0x44,0x3b
	};
	static const char gif_without_trailer_1[] = {
	/* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x80,0x00,0x00,
	/* palette */0xff,0xff,0xff,0xff,0xff,0xff,
	/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
	/* image data */0x02,0x02,0x44,0xde,0xad,0xbe,0xef,0xde,0xad,0xbe,0xef
	};

	static const char gif_without_trailer_2[] = {
	/* LSD */'G','I','F','8','7','a',0x01,0x00,0x01,0x00,0x00,0x00,0x00,
	/* IMD */0x2c,0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x00,0x00,
	/* image data */0x02,0x02,0x44,0xde,0xad,0xbe,0xef,0xde,0xad,0xbe,0xef
	};

	static void test_truncated_gif(void)
	{
	HRESULT hr;
	IStream *stream;
	IWICBitmapDecoder *decoder;
	GUID format;

	stream = create_stream(gif_with_trailer_1, sizeof(gif_with_trailer_1));
	if (!stream) return;

	hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
	ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
	hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
	ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
	"wrong container format %s\n", wine_dbgstr_guid(&format));
	IWICBitmapDecoder_Release(decoder);
	IStream_Release(stream);

	stream = create_stream(gif_with_trailer_2, sizeof(gif_with_trailer_2));
	if (!stream) return;
	hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
	ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
	hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
	ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
	"wrong container format %s\n", wine_dbgstr_guid(&format));
	IWICBitmapDecoder_Release(decoder);
	IStream_Release(stream);

	stream = create_stream(gif_without_trailer_1, sizeof(gif_without_trailer_1));
	if (!stream) return;
	hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
	ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
	hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
	ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
	"wrong container format %s\n", wine_dbgstr_guid(&format));
	IWICBitmapDecoder_Release(decoder);
	IStream_Release(stream);

	stream = create_stream(gif_without_trailer_2, sizeof(gif_without_trailer_2));
	if (!stream) return;
	hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
	ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
	hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
	ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
	ok(IsEqualGUID(&format, &GUID_ContainerFormatGif),
	"wrong container format %s\n", wine_dbgstr_guid(&format));
	IWICBitmapDecoder_Release(decoder);
	IStream_Release(stream);
	}

	START_TEST(gifformat)
	{
	HRESULT hr;

	CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
	hr = CoCreateInstance(&CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER,
	&IID_IWICImagingFactory, (void **)&factory);
	ok(hr == S_OK, "CoCreateInstance error %#x\n", hr);
	if (FAILED(hr)) return;

	test_global_gif_palette();
	test_global_gif_palette_2frames();
	test_local_gif_palette();
	test_gif_frame_sizes();

	IWICImagingFactory_Release(factory);
	CoUninitialize();

	/* run the same tests with no COM initialization */
	hr = WICCreateImagingFactory_Proxy(WINCODEC_SDK_VERSION, &factory);
	ok(hr == S_OK, "WICCreateImagingFactory_Proxy error %#x\n", hr);

	test_global_gif_palette();
	test_global_gif_palette_2frames();
	test_local_gif_palette();
	test_gif_frame_sizes();
	test_truncated_gif();

	IWICImagingFactory_Release(factory);
	}