A few days ago we broke the story about an exciting new development in the homebrew world. The long in progress video-out project by XDA developer marsrogers had finally reached a breakthrough. Now users smart enough to follow the procedure can output video from their phones over a USB cable and onto their computer by using a secondary application, albeit not without a challenge.
So to significantly cut down on the potential time wasted, the XDA-Devs Team have released quite the handy package for Custom ROM chefs to bake in the video-out functionality. Here's a brief quote from the team about how it works and what the advantages are (especially if you're a game developer):
With the software in this release it is possible to add functionality to a custom ROM that allows to switch the USB-port of a Windows Phone 7 device to Video Out and back to normal Zune sync. The desktop software can be used to display the video of Windows Phone 7 device on a PC. This also works for XNA software, so this allows to make full-size screen-captures of games too, by pressing "Prnt Scrn" while showing the video output on a PC. The desktop-software can also be used for demonstrations and presentations of Windows Phone 7 content.
A few caveats come along with the functionality though: when a phone is performing video-out, it cannot sync any content simultaneously, with the only way to restore it being a reboot after switching out of Video-Out Mode. Also while in the new mode, the phone may seem more sluggish because a registry value is altered that affects the phone's refresh rate. In simple terms, don't expect perfect fluidity until after a reboot. Finally, for right now the accompanying PC application has not been tested on x64 (64-bit) Windows so we'd recommend not taking the chance.
If you're an intrigued chef, get all of the resources from the source link below. For everyone else, sit tight until we begin to see the first Custom ROMs with this functionality baked in.