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gdiplus: Increase refcount of the source stream when loading a bitmap instead of cloning it.

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This commit is contained in:
Dmitry Timoshkov 2012-06-27 14:29:08 +09:00 committed by Alexandre Julliard
parent 55f160db34
commit 174b74bab2
3 changed files with 8 additions and 28 deletions
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2
dlls/gdiplus/gdiplus_private.h
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@ -262,7 +262,7 @@ struct GpAdustableArrowCap{
struct GpImage{
IPicture *picture;
IStream *stream; /* a copy of the source stream */
IStream *stream; /* source stream */
ImageType type;
GUID format;
UINT flags;

32
dlls/gdiplus/image.c
View File

@ -2775,6 +2775,8 @@ end:
bitmap->image.frame_count = frame_count;
bitmap->image.current_frame = active_frame;
bitmap->image.stream = stream;
/* Pin the source stream */
IStream_AddRef(stream);
}
return status;
@ -2842,7 +2844,7 @@ static GpStatus decode_image_olepicture_metafile(IStream* stream, REFCLSID clsid
*image = GdipAlloc(sizeof(GpMetafile));
if(!*image) return OutOfMemory;
(*image)->type = ImageTypeMetafile;
(*image)->stream = stream;
(*image)->stream = NULL;
(*image)->picture = pic;
(*image)->flags = ImageFlagsNone;
(*image)->frame_count = 1;
@ -3011,42 +3013,21 @@ GpStatus WINGDIPAPI GdipImageSelectActiveFrame(GpImage *image, GDIPCONST GUID *d
return stat;
}
GpStatus WINGDIPAPI GdipLoadImageFromStream(IStream *source, GpImage **image)
GpStatus WINGDIPAPI GdipLoadImageFromStream(IStream *stream, GpImage **image)
{
GpStatus stat;
LARGE_INTEGER seek;
HRESULT hr;
const struct image_codec *codec=NULL;
IStream *stream;
hr = IStream_Clone(source, &stream);
if (FAILED(hr))
{
STATSTG statstg;
hr = IStream_Stat(source, &statstg, STATFLAG_NOOPEN);
if (FAILED(hr)) return hresult_to_status(hr);
stat = GdipCreateStreamOnFile(statstg.pwcsName, GENERIC_READ, &stream);
if(stat != Ok) return stat;
}
/* choose an appropriate image decoder */
stat = get_decoder_info(stream, &codec);
if (stat != Ok)
{
IStream_Release(stream);
return stat;
}
if (stat != Ok) return stat;
/* seek to the start of the stream */
seek.QuadPart = 0;
hr = IStream_Seek(stream, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
{
IStream_Release(stream);
return hresult_to_status(hr);
}
if (FAILED(hr)) return hresult_to_status(hr);
/* call on the image decoder to do the real work */
stat = codec->decode_func(stream, &codec->info.Clsid, 0, image);
@ -3058,7 +3039,6 @@ GpStatus WINGDIPAPI GdipLoadImageFromStream(IStream *source, GpImage **image)
return Ok;
}
IStream_Release(stream);
return stat;
}

2
dlls/gdiplus/tests/image.c
View File

@ -2693,7 +2693,7 @@ static GpImage *load_image(const BYTE *image_data, UINT image_size)
refcount = IStream_Release(stream);
if (image_type == ImageTypeBitmap)
todo_wine ok(refcount >= 1, "expected stream refcount != 0\n");
ok(refcount >= 1, "expected stream refcount != 0\n");
else
ok(refcount == 0, "expected stream refcount 0, got %d\n", refcount);