Hello everyone. This seems a novice question, but I have scanned Apple Mac-Dev-Center site and I dived into all kinds of documentation, to no avail. It seems that some basic functionality that was once beautifully covered by the grand "QuickTime" API-set has split into so many parts of the system I can't figure out how to do it anymore. I'm re-writing an application I did 12 years ago, on MacOS 9, QuickTime Sequence-Grabber APIs and the first versions of Carbon.
My task: --------- I need to continuously grab frames from an IIDC/DCam camera connected to the Mac via FireWire (iEEE1394), and display them on the application window, scaled, somewhat enhanced (contrast, edges), with a grid overlay drawn on them. Further, I need to allow a user to draw geometrical objects on the live image, and measure distances and curves clicking over the live video view. --------- I neither need to record video to disk nor to compress the incoming video. Just display it at the best quality and frame-rate I can. The camera is mounted on a Microscope, and the need for live-image is for the operator to be able to focus the microscope with on-screen feedback, or move the objective to search for some microscopic object. The original implementation did this without problems on 1999 Macs, using QuickTime SG (Sequence-Grabber) APIs for grabbing video, QuickDraw for drawing over the actual GWorld's. I also converted the color spaces by hand, and optimized here and there, until I was able to reach 15fps with a 2mega-pixel camera, on a PPC G3 iMac of that time. Now --- not only I can't find any API set that will allow me to grab video from camera, I find so many frameworks involved in Video that I can't find the connection points between them. Embarrassingly complicated and incomplete APIs. I know I'll need Quartz to draw over the image. I know CoreGraphics will be involved in the layering and CoreImage for image-enhancements. I don't know If I need CoreVideo, although it is about manipulating video as it is displayed. I don't know If I need QTKit or AVFoundation, or something else, and where does OpenGL get in the middle. There is NO SAMPLE PROGRAM now, in in the whole of Apple's developer site to simply grab frames from the iSight (internal camera of the Mac) and display them! The last thing I have (BrideOfMungGrab) does not compile anymore with MacOS 10.7 SDK. In the past, the same API was used for grabbing from iSight, DCAM/IIDCS cameras, and DV-Cam --- today I don't know. I absolutely need a pointer, or I'm missing something big as an elephant. Help please? Motti Shneor, --- ceterum censeo microsoftiem delendam esse --- _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
