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MediaFrameReference Properties
Hi everyone,
I am currently experimenting with the Windows.Media.Capture API and I was browsing through the meta data of my MediaFrames, because I was searching for the Camera's Projection Matrix.
Therefore I printed all the GUIDs of the properties provided by the MediaFrameReference Object (https://docs.microsoft.com/en-us/uwp/api/windows.media.capture.frames.mediaframereference ; MediaFrameReference::Properties) and I found what is was searching.
However there were a lot more properties then I expected and I was wondering where do I find the according GUIDs?
Best regards
Dennis B.
PS.: the list of properties is:
Key: {8f3e35e7-2dcd-4887-8622-2a58baa652b0}
Key: {429f001f-bc30-4bac-af7f-91c024d1d974}
Key: {9d13c82f-2199-4e67-91cd-d1a4181f2534}
Key: {941ce0a3-6ae3-4dda-9a08-a64298340617}
Key: {6523775a-ba2d-405f-b2c5-01ff88e2e8f6}
Key: {66a3d7d5-f91b-42bb-ae55-b4db6f98fcd6}
Key: {0b404d45-3042-4f52-9ba5-b1dab2d02508}
Key: {c4139297-2cec-47c6-9cdf-6db62ee6df72}
Key: {9cdf01d9-a0f0-43ba-b077-eaa06cbd728a}
Key: {4e251fa4-830f-4770-859a-4b8d99aa809b}
Key: {137e6b95-4cad-4cb9-9b7f-65cef2068a41}
Key: {1d120ef0-cfc4-4e49-b64c-ddc371776022}
Key: {6b761658-b7ec-4c3b-8225-8623cabec31d}
Key: {47f9fcb5-2a02-4f26-a477-792fdf95886a}
Key: {9cdf01d8-a0f0-43ba-b077-eaa06cbd728a}
Key: {4ee3b6c5-6a15-4e72-9761-70c1db8b9fe3}
Key: {c9ba19a9-0f8a-432f-aede-ba44d7f38ab7}
Key: {b1d5830a-deb8-40e3-90fa-389943716461}
Best Answer
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Options
The quick answer... .H and .idl files from the uwp Windows SDK typically found
C:\Program Files (x86)\Windows Kits\10\Include{YOUR VERSION}\winrtThe longer answer, well this depends on your version, if you have the SDK installed properly, and specifically which interface are you referring. The media frame ref is more a dynamic interface where it can represent an VideoFrame, InfraredFrame, ColorFrame, or CustomFrame (think Kinect Skeleton tracking, etc). Now depending on which frame type it is, then you have to look at it's interface type and then look for the corresponding guids. Note: some of these guids may be runtime - and not correspond to interfaces you can access with C#, but only through C++ applications.
HTH
Dwight Goins
CAO & Founder| Independent Architect | Trainer and Consultant | Sr. Enterprise Architect
MVP | MCT | MCSD | MCPD | SharePoint TS | MS Virtual TS |Windows 8 App Store Developer | Linux Gentoo Geek | Raspberry Pi Owner | Micro .Net Developer | Kinect For Windows Device Developer
http://dgoins.wordpress.com5
Answers
The quick answer... .H and .idl files from the uwp Windows SDK typically found
C:\Program Files (x86)\Windows Kits\10\Include{YOUR VERSION}\winrt
The longer answer, well this depends on your version, if you have the SDK installed properly, and specifically which interface are you referring. The media frame ref is more a dynamic interface where it can represent an VideoFrame, InfraredFrame, ColorFrame, or CustomFrame (think Kinect Skeleton tracking, etc). Now depending on which frame type it is, then you have to look at it's interface type and then look for the corresponding guids. Note: some of these guids may be runtime - and not correspond to interfaces you can access with C#, but only through C++ applications.
HTH
Dwight Goins
CAO & Founder| Independent Architect | Trainer and Consultant | Sr. Enterprise Architect
MVP | MCT | MCSD | MCPD | SharePoint TS | MS Virtual TS |Windows 8 App Store Developer | Linux Gentoo Geek | Raspberry Pi Owner | Micro .Net Developer | Kinect For Windows Device Developer
http://dgoins.wordpress.com
With the above statement being said, if you're looking for the camera intrinsics, that depends on the source kind. If it's a ColorFrame, then access the ColorFrame using the trygettlatestframe(), and then you can access the cameraintrinsics property to get the matrix if the source frame supports this.
Dwight Goins
CAO & Founder| Independent Architect | Trainer and Consultant | Sr. Enterprise Architect
MVP | MCT | MCSD | MCPD | SharePoint TS | MS Virtual TS |Windows 8 App Store Developer | Linux Gentoo Geek | Raspberry Pi Owner | Micro .Net Developer | Kinect For Windows Device Developer
http://dgoins.wordpress.com
Thank you, that kinda works. Some I cannot find at all.
However its very unfortunate that it is not documented