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windowscodecs: Store stream reference in png decoder.

This commit is contained in:
Piotr Caban 2015-03-12 10:17:19 +01:00 committed by Alexandre Julliard
parent b681123385
commit 531992c760
2 changed files with 8 additions and 1 deletions
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5
dlls/windowscodecs/pngformat.c
View File

@ -296,6 +296,7 @@ typedef struct {
IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
IWICMetadataBlockReader IWICMetadataBlockReader_iface;
LONG ref;
IStream *stream;
png_structp png_ptr;
png_infop info_ptr;
png_infop end_info;
@ -366,6 +367,7 @@ static ULONG WINAPI PngDecoder_Release(IWICBitmapDecoder *iface)
if (ref == 0)
{
IStream_Release(This->stream);
if (This->png_ptr)
ppng_destroy_read_struct(&This->png_ptr, &This->info_ptr, &This->end_info);
This->lock.DebugInfo->Spare[0] = 0;
@ -605,6 +607,9 @@ static HRESULT WINAPI PngDecoder_Initialize(IWICBitmapDecoder *iface, IStream *p
ppng_read_end(This->png_ptr, This->end_info);
This->stream = pIStream;
IStream_AddRef(This->stream);
This->initialized = TRUE;
end:

4
dlls/windowscodecs/tests/pngformat.c
View File

@ -283,6 +283,7 @@ static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size
IWICBitmapDecoder *decoder = NULL;
IStream *stream;
GUID format;
LONG refcount;
hmem = GlobalAlloc(0, image_size);
data = GlobalLock(hmem);
@ -300,7 +301,8 @@ static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size
ok(IsEqualGUID(&format, &GUID_ContainerFormatPng),
"wrong container format %s\n", wine_dbgstr_guid(&format));
IStream_Release(stream);
refcount = IStream_Release(stream);
ok(refcount > 0, "expected stream refcount > 0\n");
return decoder;
}