You want AVCaptureSession. --Kyle Sluder
> On Nov 25, 2013, at 9:53 AM, Motti Shneor <su...@bezeqint.net> wrote: > > 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
