[PATCH v5 3/5] ole32: Add support for loading wmf from contents streams to data cache.

[Huw Davies]

On Fri, Apr 06, 2018 at 08:54:40AM -0500, Sergio Gómez Del Real wrote:
> Signed-off-by: Sergio Gómez Del Real <sdelreal at codeweavers.com>
> ---
>  dlls/ole32/datacache.c | 70 ++++++++++++++++++++++++++++----------------------
>  1 file changed, 40 insertions(+), 30 deletions(-)
> 
> diff --git a/dlls/ole32/datacache.c b/dlls/ole32/datacache.c
> index 7c1f9677cb..028c0a1daa 100644
> --- a/dlls/ole32/datacache.c
> +++ b/dlls/ole32/datacache.c
> @@ -570,6 +570,17 @@ static HRESULT synthesize_emf( HMETAFILEPICT data, STGMEDIUM *med )
>      GlobalUnlock( data );
>      return hr;
>  }
> +#include <pshpack2.h>
> +struct meta_placeable
> +{
> +    DWORD key;
> +    WORD hwmf;
> +    WORD bounding_box[4];
> +    WORD inch;
> +    DWORD reserved;
> +    WORD checksum;
> +};
> +#include <poppack.h>
>  
>  static HRESULT load_mf_pict( DataCacheEntry *cache_entry, IStream *stm )
>  {
> @@ -579,29 +590,30 @@ static HRESULT load_mf_pict( DataCacheEntry *cache_entry, IStream *stm )
>      void *bits;
>      METAFILEPICT *mfpict;
>      HGLOBAL hmfpict;
> -    PresentationDataHeader header;
> -    CLIPFORMAT clipformat;

Again, I'm not sure the variable renames are worth the extra noise
here.

>      static const LARGE_INTEGER offset_zero;
>      ULONG read;
> -
> -    if (cache_entry->load_stream_num == STREAM_NUMBER_CONTENTS)
> -    {
> -        FIXME( "Unimplemented for CONTENTS stream\n" );
> -        return E_FAIL;
> -    }
> +    CLIPFORMAT cf;
> +    PresentationDataHeader pres;
> +    struct meta_placeable mf_place;
>  
>      hr = IStream_Stat( stm, &stat, STATFLAG_NONAME );
>      if (FAILED( hr )) return hr;
>  
> -    hr = read_clipformat( stm, &clipformat );
> -    if (FAILED( hr )) return hr;
> -
> -    hr = IStream_Read( stm, &header, sizeof(header), &read );
> -    if (hr != S_OK || read != sizeof(header)) return E_FAIL;
> +    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 E_FAIL;

Propagate hr.

> +    }
> +    else
> +    {
> +        hr = IStream_Read( stm, &mf_place, sizeof(mf_place), &read );
> +        if (hr != S_OK) return E_FAIL;

And here.

> +    }
>  
>      hr = IStream_Seek( stm, offset_zero, STREAM_SEEK_CUR, &current_pos );
>      if (FAILED( hr )) return hr;
> -
>      stat.cbSize.QuadPart -= current_pos.QuadPart;
>  
>      hmfpict = GlobalAlloc( GMEM_MOVEABLE, sizeof(METAFILEPICT) );
> @@ -616,14 +628,24 @@ static HRESULT load_mf_pict( DataCacheEntry *cache_entry, IStream *stm )
>      }
>  
>      hr = IStream_Read( stm, bits, stat.cbSize.u.LowPart, &read );
> -    if (hr != S_OK || read != stat.cbSize.u.LowPart) hr = E_FAIL;
> +    if (hr != S_OK) hr = E_FAIL;

And here.

>  
>      if (SUCCEEDED( hr ))
>      {
> -        /* FIXME: get this from the stream */
>          mfpict->mm = MM_ANISOTROPIC;
> -        mfpict->xExt = header.dwObjectExtentX;
> -        mfpict->yExt = header.dwObjectExtentY;
> +        /* FIXME: get this from the stream */
> +        if (cache_entry->load_stream_num != STREAM_NUMBER_CONTENTS)
> +        {
> +            mfpict->xExt = pres.dwObjectExtentX;
> +            mfpict->yExt = pres.dwObjectExtentY;
> +        }
> +        else
> +        {
> +            mfpict->xExt = ((mf_place.bounding_box[2] - mf_place.bounding_box[0])
> +                            * 2540) / mf_place.inch;
> +            mfpict->yExt = ((mf_place.bounding_box[3] - mf_place.bounding_box[1])
> +                            * 2540) / mf_place.inch;
> +        }
>          mfpict->hMF = SetMetaFileBitsEx( stat.cbSize.u.LowPart, bits );
>          if (!mfpict->hMF)
>              hr = E_FAIL;
> @@ -912,18 +934,6 @@ end:
>      return hr;
>  }
>  
> -#include <pshpack2.h>
> -struct meta_placeable
> -{
> -    DWORD key;
> -    WORD hwmf;
> -    WORD bounding_box[4];
> -    WORD inch;
> -    DWORD reserved;
> -    WORD checksum;
> -};
> -#include <poppack.h>
> -
>  static HRESULT save_mfpict(DataCacheEntry *entry, BOOL contents, IStream *stream)
>  {
>      HRESULT hr = S_OK;
> -- 
> 2.14.1
> 
> 
>