Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The post is old, but it is almost first in google, and it has got no valid answer, so here's one more option:</p> <p><strong>Solution for iOS from 4.x to 7.x</strong></p> <p>It's all in terms of <code>AV Foundation</code> framework</p> <p>After <code>AVCaptureSession</code> is configured and started you can find video dimensions inside <code>[[[session.inputs.lastObject] ports].lastObject formatDescription]</code> variable</p> <p>Here's approximate code:</p> <pre><code>AVCaptureSession* session = ...; AVCaptureDevice *videoCaptureDevice = ...; AVCaptureDeviceInput *videoInput = ...; [session beginConfiguration]; if ([session canAddInput:videoInput]) {[session addInput:videoInput];} [session commitConfiguration]; [session startRunning]; //this is the clue AVCaptureInputPort *port = videoInput.ports.lastObject; if ([port mediaType] == AVMediaTypeVideo) { videoDimensions = CMVideoFormatDescriptionGetDimensions([port formatDescription]); } </code></pre> <p><strong>Solution for iOS8</strong></p> <p>Apple did change everything again: now you must subscribe for <code>AVCaptureInputPortFormatDescriptionDidChangeNotification</code></p> <p>Here is the sample:</p> <pre><code>-(void)initSession { AVCaptureSession* session = ...; AVCaptureDevice *videoCaptureDevice = ...; AVCaptureDeviceInput *videoInput = ...; [session beginConfiguration]; if ([session canAddInput:videoInput]) {[session addInput:videoInput];} [session commitConfiguration]; [session startRunning]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(avCaptureInputPortFormatDescriptionDidChangeNotification:) name:@"AVCaptureInputPortFormatDescriptionDidChangeNotification" object:nil]; } -(void)avCaptureInputPortFormatDescriptionDidChangeNotification:(NSNotification *)notification { AVCaptureInputPort *port = [videoInput.ports objectAtIndex:0]; CMFormatDescriptionRef formatDescription = port.formatDescription; if (formatDescription) { videoDimensions = CMVideoFormatDescriptionGetDimensions(formatDescription); } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POGet iPhone's camera resolution?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USRosik
    1. USRosik
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COLast object returns dimensions as 0x0. 1st object instead is giving the dimensions of the video (or rather video frames)..
      singulars
      1. PO
      1. USneeraj
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload