iccvid: Allow top-down videos to be played upside down

[Bruno Jesus]

In my opinion this is better than not having videos played at all, and
it may attract other people attention to the real problem and possible
solutions on where to invert the buffer after decoding or maybe
decoding directly to the right buffer position inside decode_cinepak.

Related to bug https://bugs.winehq.org/show_bug.cgi?id=29852
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diff --git a/dlls/iccvid/iccvid.c b/dlls/iccvid/iccvid.c
index 4a59dae..9a2cb71 100644
--- a/dlls/iccvid/iccvid.c
+++ b/dlls/iccvid/iccvid.c
@@ -772,7 +772,7 @@ static LRESULT ICCVID_DecompressQuery( ICCVID_Info *info, LPBITMAPINFO in, LPBIT
 
         if( in->bmiHeader.biPlanes != out->bmiHeader.biPlanes )
             return ICERR_BADFORMAT;
-        if( in->bmiHeader.biHeight != out->bmiHeader.biHeight )
+        if( in->bmiHeader.biHeight != abs(out->bmiHeader.biHeight) )
             return ICERR_BADFORMAT;
         if( in->bmiHeader.biWidth != out->bmiHeader.biWidth )
             return ICERR_BADFORMAT;
@@ -855,6 +855,9 @@ static LRESULT ICCVID_DecompressBegin( ICCVID_Info *info, LPBITMAPINFO in, LPBIT
 
     TRACE("bit_per_pixel = %d\n", info->bits_per_pixel);
 
+    if (out->bmiHeader.biHeight < 0)
+        ERR("Top-down videos are not supported, frames will be decoded upside down.\n");
+
     if( info->cvinfo )
         free_cvinfo( info->cvinfo );
     info->cvinfo = decode_cinepak_init();