Why are pc games only in LPCM 5.1 not in DD 5.1 or DTS 5.1?

I have used hdmi through my video card for gaming over the past 4 years now and I have noticed that it will only do LPCM 5.1 instead of DD 5.1 or DTS 5.1? There are console games that can do DD 5.1 and DTS 5.1, so why not pc games?

And yes before anyone say that LPCM is the same or better than DD or DTS I don't care about that, as all I want to know why it will only do LPCM.

My video card is an Sapphire R9 270X and it says that has Dolby TrueHD and DTSHD Master Audio Support.

PCM is basically just the audio channels being straight to your device by the game. DD and DTS are encoded signals, both limited in their bandwidth. Sort of like getting MP3's instead of FLAC. You can encode games into DD 5.1 if you have the right sound card and download the right plugin. Games don't have DD or DTS encoding built in because there's zero need for it. DD and DTS are more accessible and can be sent over an optical cable, unlike lossless signals.

Typical Spock-like response.

@blutfahne: somebody asked he answered..or would you prefer he just posts a page of herpy derpy Derp..You would probably understand that better,seems more on your level

Because then somebody has to pay dolby or DTS

@KHAndAnime

Basically what Kraken and KH said, but I believe there are a few games out there that had Dolby (like Doom3). I could be wrong on that one.

Typical paranoid took it the wrong way Kerbal response.