I'm one of the authors of "Media Player Classic - Homecinema" (http://sourceforge.net/projects/mpc-hc/). This open source playeralready supportDXVA bitstream decodingwith ATI and nVidia graphics cards.
We plan to add support for Intel G45, but we have to following problem : standard Gui for H264 bitstream decoder (DXVA2_ModeH264_E and DXVA2_ModeH264_F) didn't seems to be implemented on G45. Furthermore, calls to function GetDecoderDeviceGuids on interface IDirectXVideoDecoderService return 2 Gui that did not appears in Microsoft DXVA specifications : BCC5DB6D-A2B6-4AF0-ACE4-ADB1F787BC89 and 604F8E68-4951-4C54-88FE-ABD25C15B3D6. I guess one of the is for VC1, and the other for H264 bitstream decoder.
So my question is :does Intel use a specific protocol for bitstream decoder, and if so is it possible to have the specifications?