[TIMOB-23848] Ti.Media add focus methods and properties

GitHub Issue	n/a
Type	New Feature
Priority	High
Status	Open
Resolution	Unresolved
Affected Version/s	n/a
Fix Version/s	n/a
Components	Android, iOS
Labels	android, camera, continuous, focus, ios, media, mode
Reporter	Ricardo Pereira
Assignee	Vijay Singh
Created	2016-08-31T14:09:44.000+0000
Updated	2020-02-14T11:15:26.000+0000

Description

The focus is set by default to the AUTO, there is no way to change it, in my case I need to use the continuous focus mode. android: FOCUS_MODE_CONTINUOUS_PICTURE & FOCUS_MODE_CONTINUOUS_VIDEO iOS AVCaptureFocusMode ContinuousAutoFocus or AVCaptureFocusModeContinuousAutoFocus

Comments

Sharif AbuDarda 2016-08-31

Hello, Thanks for creating the ticket. Our engineers will look into it. We will let you know if and when we will make avialble of this features. Thanks.

Hans Knöchel 2016-08-31

Sounds interesting. can you propose an API for this interface? It is for the showCamera arguments, right? Maybe something like:

   Ti.Media.showCamera({
       focusMode: Ti.Media.FOCUS_MODE_AUTO // default, other constants available
   });

EDIT: iOS has

   AVCaptureFocusModeLocked
   AVCaptureFocusModeAutoFocus
   AVCaptureFocusModeContinuousAutoFocus

Android has:

   FOCUS_MODE_AUTO
   FOCUS_MODE_CONTINUOUS_PICTURE
   FOCUS_MODE_CONTINUOUS_VIDEO
   FOCUS_MODE_EDOF
   FOCUS_MODE_FIXED
   FOCUS_MODE_INFINITY
   FOCUS_MODE_MACRO

We could use the auto-ones for the default values, the continuous ones cross-platform and the others platform-specific. Makes sense?

Ricardo Pereira 2016-09-01
Tiago Miguel Filipe Duarte 2016-12-05

Vijay Singh 2016-12-06

PR : https://github.com/appcelerator/titanium_mobile/pull/8662 [~hansknoechel] Please review above PR and let me know your feedback. Unit test cases part I will do later. Implementation example -

   var win = Titanium.UI.createWindow({
   	backgroundColor:'white'
   });
   
   var button = Titanium.UI.createButton({
   	top: 20,
   	width:100,
   	height: 60,
   	title: 'OpenCamera'
   });
   
   button.addEventListener('click', function(e) {
   	Titanium.Media.showCamera({
   
   	success:function(event)
   	{
   		var cropRect = event.cropRect;
   		if(event.mediaType == Ti.Media.MEDIA_TYPE_PHOTO)
   		{
   			var imageView = Ti.UI.createImageView({
   				width:200,
   				height:200,
   				image:event.media
   			});
   			win.add(imageView);
   		}
   	},
   	cancel:function()
   	{
   	},
   	error:function(error)
   	{
   	},
   	focusMode:Ti.Media.FOCUS_MODE_FIXED,
   	showControls:true,
   	saveToPhotoGallery:true,
   	allowEditing:true,
   });
   });
   win.add(button);
   win.open();

Vijay Singh 2016-12-14

In above PR I was trying to get the AVCaptureDevice and changing the property . But after changing, it get reset to its default one. So this will not work. Actually the mentioned property is available in AVFoundation framework in iOS . We are currently using UIImagePickerController to open camera i.e available in UIKit framework. If we want to integrate the mentioned property , we have to use AVCaptureSession. There we can use AVCaptureDevice and manage the properties . [~cng] [~hansknoechel] We have to discuss on same because it is major change. https://www.objc.io/issues/21-camera-and-photos/camera-capture-on-ios/
Ricardo Pereira 2016-12-14
Vijay Singh 2016-12-15

Same with torch mode ( TIMOB-23856 ). I don't think it is possible to use these properties right now until the mentioned changes happen. Or is it possible with Hyperloop ? [~hansknoechel] Can you confirm please.
Hans Knöchel 2016-12-19

That is correct. Unfortunately, iOS only exposed the focus- and torch-modes for the AVCaptureDevice, not the UIImagePickerController. TIMOB-23947 tracks progress of that improvement.
Vijay Singh 2017-05-11

In iOS for this ticket including TIMOB-23947 and TIMOB-23856 , we are creating a camera module as mentioned in wiki https://wiki.appcelerator.org/display/pe/Custom+Camera+Support+in+iOS .

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