Re: [PATCH v3 0/6] MR7715: Implement dynamic formats in directdraw media stream.

[Anton Baskanov (＠baskanov)]

Anton Baskanov (@baskanov) commented about dlls/amstream/ddrawstream.c:
>  return S_OK;
>
> }
>
> +static void set_mt_from_desc(AM_MEDIA_TYPE *mt, const DDSURFACEDESC *format)
> +{
> - VIDEOINFOHEADER *videoinfo;
> -
> - videoinfo = (VIDEOINFOHEADER*)mt->pbFormat;
> - videoinfo->bmiHeader.biWidth = format->dwWidth;
> - videoinfo->bmiHeader.biHeight = format->dwHeight;
> -
> - if (format->ddpfPixelFormat.dwRGBBitCount == 16 && format->ddpfPixelFormat.dwRBitMask == 0x7c00)
> -
>    mt->subtype = MEDIASUBTYPE_RGB555;

You also have to set `biBitCount`, `biCompression` and `biSizeImage`. And for RGB565 you have to put the bit masks right after the `BITMAPINFOHEADER` (see e.g. [quartz_parser.c:598](dlls/winegstreamer/quartz_parser.c?ref_type=heads#L598)). This means you'll have to allocate memory for the new format block.