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ole32: Add support for loading dibs from presentation streams to data cache. 

Signed-off-by: Sergio Gómez Del Real <sdelreal@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Sergio Gómez Del Real 2018-04-11 11:45:15 -05:00 committed by Alexandre Julliard
parent 3350cf2320
commit a1a99f014c
1 changed files with 35 additions and 22 deletions
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57
dlls/ole32/datacache.c
View File

@ -647,48 +647,61 @@ static HRESULT load_dib( DataCacheEntry *cache_entry, IStream *stm )
{
HRESULT hr;
STATSTG stat;
void *dib;
BYTE *dib;
HGLOBAL hglobal;
ULONG read, info_size, bi_size;
BITMAPFILEHEADER file;
BITMAPINFOHEADER *info;
if (cache_entry->load_stream_num != STREAM_NUMBER_CONTENTS)
{
FIXME( "Unimplemented for presentation stream\n" );
return E_FAIL;
}
CLIPFORMAT cf;
PresentationDataHeader pres;
ULARGE_INTEGER current_pos;
static const LARGE_INTEGER offset_zero;
hr = IStream_Stat( stm, &stat, STATFLAG_NONAME );
if (FAILED( hr )) return hr;
if (stat.cbSize.QuadPart < sizeof(file) + sizeof(DWORD)) return E_FAIL;
hr = IStream_Read( stm, &file, sizeof(file), &read );
if (hr != S_OK || read != sizeof(file)) return E_FAIL;
stat.cbSize.QuadPart -= sizeof(file);
if (cache_entry->load_stream_num != STREAM_NUMBER_CONTENTS)
{
hr = read_clipformat( stm, &cf );
if (hr != S_OK) return hr;
hr = IStream_Read( stm, &pres, sizeof(pres), &read );
if (hr != S_OK) return hr;
}
else
{
hr = IStream_Read( stm, &file, sizeof(BITMAPFILEHEADER), &read );
if (hr != S_OK) return hr;
}
hr = IStream_Seek( stm, offset_zero, STREAM_SEEK_CUR, &current_pos );
if (FAILED( hr )) return hr;
stat.cbSize.QuadPart -= current_pos.QuadPart;
hglobal = GlobalAlloc( GMEM_MOVEABLE, stat.cbSize.u.LowPart );
if (!hglobal) return E_OUTOFMEMORY;
dib = GlobalLock( hglobal );
/* read first DWORD of BITMAPINFOHEADER */
hr = IStream_Read( stm, dib, sizeof(DWORD), &read );
if (hr != S_OK || read != sizeof(DWORD)) goto fail;
if (hr != S_OK) goto fail;
bi_size = *(DWORD *)dib;
if (stat.cbSize.QuadPart < bi_size) goto fail;
hr = IStream_Read( stm, (char *)dib + sizeof(DWORD), bi_size - sizeof(DWORD), &read );
if (hr != S_OK || read != bi_size - sizeof(DWORD)) goto fail;
/* read rest of BITMAPINFOHEADER */
hr = IStream_Read( stm, dib + sizeof(DWORD), bi_size - sizeof(DWORD), &read );
if (hr != S_OK) goto fail;
info_size = bitmap_info_size( dib, DIB_RGB_COLORS );
info_size = bitmap_info_size( (BITMAPINFO *)dib, DIB_RGB_COLORS );
if (stat.cbSize.QuadPart < info_size) goto fail;
if (info_size > bi_size)
{
hr = IStream_Read( stm, (char *)dib + bi_size, info_size - bi_size, &read );
if (hr != S_OK || read != info_size - bi_size) goto fail;
hr = IStream_Read( stm, dib + bi_size, info_size - bi_size, &read );
if (hr != S_OK) goto fail;
}
stat.cbSize.QuadPart -= info_size;
if (file.bfOffBits)
/* set Stream pointer to beginning of bitmap bits */
if (cache_entry->load_stream_num == STREAM_NUMBER_CONTENTS && file.bfOffBits)
{
LARGE_INTEGER skip;
@ -699,8 +712,8 @@ static HRESULT load_dib( DataCacheEntry *cache_entry, IStream *stm )
stat.cbSize.QuadPart -= skip.QuadPart;
}
hr = IStream_Read( stm, (char *)dib + info_size, stat.cbSize.u.LowPart, &read );
if (hr != S_OK || read != stat.cbSize.QuadPart) goto fail;
hr = IStream_Read( stm, dib + info_size, stat.cbSize.u.LowPart, &read );
if (hr != S_OK) goto fail;
if (bi_size >= sizeof(*info))
{
@ -719,12 +732,12 @@ static HRESULT load_dib( DataCacheEntry *cache_entry, IStream *stm )
cache_entry->stgmedium.tymed = TYMED_HGLOBAL;
cache_entry->stgmedium.u.hGlobal = hglobal;
return S_OK;
return hr;
fail:
GlobalUnlock( hglobal );
GlobalFree( hglobal );
return E_FAIL;
return hr;
}