objective c - Capturing iSight image using AVFoundation on Mac -


i had code capture single image mac's isight camera using qtkit:

- (nserror*)takepicture {         bool success;     nserror* error;      capturesession = [qtcapturesession new];     qtcapturedevice* device = [qtcapturedevice defaultinputdevicewithmediatype: qtmediatypevideo];      success = [device open: &error];     if (!success) { return error; }      qtcapturedeviceinput* capturedeviceinput = [[qtcapturedeviceinput alloc] initwithdevice: device];     success = [capturesession addinput: capturedeviceinput error: &error];     if (!success) { return error; }      qtcapturedecompressedvideooutput* capturevideooutput = [qtcapturedecompressedvideooutput new];     [capturevideooutput setdelegate: self];      success = [capturesession addoutput: capturevideooutput error: &error];     if (!success) { return error; }      [capturesession startrunning];     return nil; } - (void)captureoutput: (qtcaptureoutput*)captureoutput   didoutputvideoframe: (cvimagebufferref)imagebuffer      withsamplebuffer: (qtsamplebuffer*)samplebuffer        fromconnection: (qtcaptureconnection*)connection {     cvbufferretain(imagebuffer);      if (imagebuffer) {         [capturesession removeoutput: captureoutput];         [capturesession stoprunning];          nsciimagerep* imagerep = [nsciimagerep imagerepwithciimage: [ciimage imagewithcvimagebuffer: imagebuffer]];          _result = [[nsimage alloc] initwithsize: [imagerep size]];         [_result addrepresentation: imagerep];          cvbufferrelease(imagebuffer);          _done = yes;     } }

however, found today qtkit has been deprecated , must use avfoundation. can me convert code avfoundation equivalent? seems though many methods have same name, @ same time, lot different , i'm @ complete loss here... help?

alright, found solution!! here is:

- (void)takepicture {     nserror* error;     avcapturedevice* device = [avcapturedevice defaultdevicewithmediatype: avmediatypevideo];     avcapturedeviceinput* input = [avcapturedeviceinput deviceinputwithdevice: device error: &error];     if (!input) {         _error = error;         _done = yes;         return;     }      avcapturestillimageoutput* output = [avcapturestillimageoutput new];     [output setoutputsettings: @{(id)kcvpixelbufferpixelformattypekey: @(k32bgrapixelformat)}];      capturesession = [avcapturesession new];     capturesession.sessionpreset = avcapturesessionpresetphoto;      [capturesession addinput: input];     [capturesession addoutput: output];     [capturesession startrunning];      avcaptureconnection* connection = [output connectionwithmediatype: avmediatypevideo];     [output capturestillimageasynchronouslyfromconnection: connection completionhandler: ^(cmsamplebufferref samplebuffer, nserror* error) {         if (error) {             _error = error;             _result = nil;         }         else {             cvimagebufferref imagebuffer = cmsamplebuffergetimagebuffer(samplebuffer);              if (imagebuffer) {                 cvbufferretain(imagebuffer);                  nsciimagerep* imagerep = [nsciimagerep imagerepwithciimage: [ciimage imagewithcvimagebuffer: imagebuffer]];                  _result = [[nsimage alloc] initwithsize: [imagerep size]];                 [_result addrepresentation: imagerep];                  cvbufferrelease(imagebuffer);             }         }          _done = yes;     }]; }

i hope helps whoever has problems in doing same thing.


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