Class Camera

Definition

Namespace:: Tizen.Multimedia

Assembly:: Tizen.Multimedia.Camera.dll

API Level:: 3

Feature:: http://tizen.org/feature/camera

This camera class provides methods to capture photos and supports setting up notifications for state changes of capturing, previewing, focusing, and informing about the resolution and the binary format, and functions for picture manipulations like sepia, negative, and many more. It also notifies you when a significant picture parameter changes, (For example, focus).


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public class Camera : IDisposable

Inheritance: System.Object

Camera

Implements: System.IDisposable

Constructors

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Camera(CameraDevice)

Initializes a new instance of the Camera class.

Declaration


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public Camera(CameraDevice device)

Parameters

Type	Name	Description
CameraDevice	device	The camera device to access.

Exceptions

Type	Condition
System.ArgumentException	Invalid CameraDevice type.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	The camera feature is not supported.

API Level: 3

Feature: http://tizen.org/feature/camera

Properties

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CameraCount

Gets the camera device count.

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public int CameraCount { get; }

Property Value

Type	Description
Int32	This returns 2, if the device supports primary and secondary cameras. Otherwise 1, if the device only supports primary camera.

Exceptions

Type	Condition
ObjectDisposedException	The camera has already been disposed.

API Level: 3

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Capabilities

Gets the various camera capabilities.

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public CameraCapabilities Capabilities { get; }

Property Value

Type	Description
CameraCapabilities

API Level: 4

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Direction

Gets the facing direction of the camera module.

Declaration


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public CameraFacingDirection Direction { get; }

Property Value

Type	Description
CameraFacingDirection	A CameraFacingDirection that specifies the facing direction of the camera device.

Exceptions

Type	Condition
ObjectDisposedException	The camera has already been disposed.

API Level: 3

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Display

Sets or gets the display type and handle to show preview images. The camera must be in the Created state.

Declaration


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public Display Display { get; set; }

Property Value

Type	Description
Display

Remarks

This must be set before the StartPreview() method. In custom ROI display mode, DisplayRoiArea property must be set before calling this method.

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

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DisplayReuseHint

The hint for the display reuse. If the hint is set to true, the display will be reused when the camera device is changed with the ChangeDevice method.

Declaration


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public bool DisplayReuseHint { get; set; }

Property Value

Type	Description
Boolean

Exceptions

Type	Condition
System.ArgumentException	In case of invalid parameters.
System.InvalidOperationException	An invalid state.
ObjectDisposedException	The camera has already been disposed.

API Level: 3

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DisplaySettings

Get/set various camera display properties.

Declaration


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public CameraDisplaySettings DisplaySettings { get; }

Property Value

Type	Description
CameraDisplaySettings

API Level: 3

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Handle

Gets the native handle of the camera.

Declaration


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public IntPtr Handle { get; }

Property Value

Type	Description
System.IntPtr

API Level: 3

Feature: http://tizen.org/feature/camera

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Settings

Gets or sets the various camera settings.

Declaration


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public CameraSettings Settings { get; }

Property Value

Type	Description
CameraSettings

API Level: 4

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State

Gets the state of the camera.

Declaration


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public CameraState State { get; }

Property Value

Type	Description
CameraState	None, Created, Preview, Capturing, Captured.

Exceptions

Type	Condition
ObjectDisposedException	The camera has already been disposed.

API Level: 3

Methods

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ChangeDevice(CameraDevice)

Changes the camera device.

Declaration


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public void ChangeDevice(CameraDevice device)

Parameters

Type	Name	Description
CameraDevice	device	The hardware camera to access.

Remarks

If display reuse is set using DisplayReuseHint before stopping the preview, the display will be reused and last frame on the display can be kept even though camera device is changed. The camera must be in the Created.

Exceptions

Type	Condition
System.ArgumentException	In case of invalid parameters.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of the ChangeDevice feature is not supported.
ObjectDisposedException	The camera has already been disposed.

API Level: 3

Feature: http://tizen.org/feature/camera

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Dispose()

Releases all resources used by the camera.

Declaration


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public void Dispose()

API Level: 3

Feature: http://tizen.org/feature/camera

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Dispose(Boolean)

Releases the unmanaged resources used by the camera.

Declaration


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protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
Boolean	disposing	true to release both managed and unmanaged resources; false to release only unmanaged resources.

API Level: 3

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Finalize()

Finalizes an instance of the Camera class.

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protected void Finalize()

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GetDeviceState(CameraDevice)

Gets the device state.

Declaration


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public static CameraDeviceState GetDeviceState(CameraDevice device)

Parameters

Type	Name	Description
CameraDevice	device	The device to get the state.

Returns

Type	Description
CameraDeviceState	Returns the state of the camera device.

Exceptions

Type	Condition
System.ArgumentException	In case of invalid parameters.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.

API Level: 4

Feature: http://tizen.org/feature/camera

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GetFlashState(CameraDevice)

Gets the flash state.

Declaration


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public static CameraFlashState GetFlashState(CameraDevice device)

Parameters

Type	Name	Description
CameraDevice	device	The device to get the state.

Returns

Type	Description
CameraFlashState	Returns the flash state of the camera device.

Exceptions

Type	Condition
System.ArgumentException	In case of invalid parameters.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.

API Level: 3

Feature: http://tizen.org/feature/camera

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StartCapture()

Starts capturing of still images. EventHandler must be set for capturing using Capturing and for completed using CaptureCompleted before calling this method. The camera must be in the Preview state.

Declaration


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public void StartCapture()

Remarks

This function causes the transition of the camera state from capturing to captured automatically and the corresponding EventHandlers will be invoked. The preview should be restarted by calling the StartPreview() method after capture is completed.

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StartCapture(Int32, Int32, CancellationToken)

Starts continuously capturing still images. EventHandler must be set for capturing using Capturing and for completed using CaptureCompleted before calling this method. The camera must be in the Preview state.

Declaration


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public void StartCapture(int count, int interval, CancellationToken cancellationToken)

Parameters

Type	Name	Description
Int32	count	The number of still images.
Int32	interval	The interval of the capture(milliseconds).
System.Threading.CancellationToken	cancellationToken	The cancellation token to cancel capturing.

Remarks

If this is not supported, zero shutter lag occurs. The capture resolution could be changed to the preview resolution. This function causes the transition of the camera state from capturing to captured automatically and the corresponding Eventhandlers will be invoked. Each captured image will be delivered through Eventhandler set using the Capturing event. The preview should be restarted by calling the StartPreview() method after capture is completed.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	In case of invalid parameters.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

StartFaceDetection()

Starts face detection. The camera must be in the Preview state.

Declaration


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public void StartFaceDetection()

Remarks

This should be called after StartPreview() is started. The Eventhandler set using FaceDetected is invoked when the face is detected in the preview frame. Internally, it starts continuously focus and focusing on the detected face.

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StartFocusing(Boolean)

Starts camera auto-focusing, asynchronously. The camera must be in the Preview or the Captured state.

Declaration


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public void StartFocusing(bool continuous)

Parameters

Type	Name	Description
Boolean	continuous	Continuous auto focus.

Remarks

If continuous status is true, the camera continuously tries to focus.

Exceptions

Type	Condition
System.ArgumentException	In case of invalid parameters.
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StartPreview()

Starts capturing and drawing preview frames on the screen. The display property must be set using Display before using this method. If needed set fps PreviewFps, preview resolution PreviewResolution, or preview format PreviewPixelFormat before using this method. The camera must be in the Created or the Captured state.

Declaration


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public void StartPreview()

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StopFaceDetection()

Stops face detection.

Declaration


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public void StopFaceDetection()

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StopFocusing()

Stops camera auto focusing. The camera must be in the Preview or the Captured state.

Declaration


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public void StopFocusing()

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

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StopPreview()

Stops capturing and drawing preview frames on the screen. The camera must be in the Preview state.

Declaration


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public void StopPreview()

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
ObjectDisposedException	The camera has already been disposed.
UnauthorizedAccessException	In case of access to the resources cannot be granted.

API Level: 3

Privilege Level: public

Privilege: http://tizen.org/privilege/camera

Feature: http://tizen.org/feature/camera

Events

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CaptureCompleted

An event that occurs after the capture of the image.

Declaration


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public event EventHandler<EventArgs> CaptureCompleted

Event Type

Type	Description
System.EventHandler<EventArgs>

API Level: 3

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Capturing

An event that occurs during capture of an image.

Declaration


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public event EventHandler<CameraCapturingEventArgs> Capturing

Event Type

Type	Description
System.EventHandler<CameraCapturingEventArgs>

API Level: 3

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DeviceStateChanged

An event that occurs after the CameraDeviceState is changed.

Declaration


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public static event EventHandler<CameraDeviceStateChangedEventArgs> DeviceStateChanged

Event Type

Type	Description
System.EventHandler<CameraDeviceStateChangedEventArgs>

Exceptions

Type	Condition
System.InvalidOperationException	In case of any invalid operations.
System.NotSupportedException	In case of this feature is not supported.
System.ArgumentException	In case of invalid parameters.

API Level: 3

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ErrorOccurred

An event that occurs when there is an asynchronous error.

Declaration


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public event EventHandler<CameraErrorOccurredEventArgs> ErrorOccurred

Event Type

Type	Description
System.EventHandler<CameraErrorOccurredEventArgs>

API Level: 3

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ExtraPreview

An event that occurs once per frame when previewing.

Declaration


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public event EventHandler<ExtraPreviewEventArgs> ExtraPreview

Event Type

Type	Description
System.EventHandler<ExtraPreviewEventArgs>

API Level: 10

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FaceDetected

An event that occurs when a face is detected in the preview frame.

Declaration


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public event EventHandler<FaceDetectedEventArgs> FaceDetected

Event Type

Type	Description
System.EventHandler<FaceDetectedEventArgs>

API Level: 3

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FocusStateChanged

An event that occurs when the auto focus state is changed.

Declaration


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public event EventHandler<CameraFocusStateChangedEventArgs> FocusStateChanged

Event Type

Type	Description
System.EventHandler<CameraFocusStateChangedEventArgs>

API Level: 3

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HdrCaptureProgress

An event that occurs when there is a change in the HDR capture progress. Checks whether the IsHdrCaptureSupported is supported or not before adding this EventHandler.

Declaration


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public event EventHandler<HdrCaptureProgressEventArgs> HdrCaptureProgress

Event Type

Type	Description
System.EventHandler<HdrCaptureProgressEventArgs>

Exceptions

Type	Condition
System.NotSupportedException	In case of HDR feature is not supported.

API Level: 3

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Interrupted

An event that occurs when an camera is interrupted by the policy.

Declaration


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public event EventHandler<CameraInterruptedEventArgs> Interrupted

Event Type

Type	Description
System.EventHandler<CameraInterruptedEventArgs>

API Level: 3

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InterruptStarted

An event that occurs when the camera interrupt is started by the policy.

Declaration


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public event EventHandler<CameraInterruptStartedEventArgs> InterruptStarted

Event Type

Type	Description
System.EventHandler<CameraInterruptStartedEventArgs>

API Level: 4

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MediaPacketPreview

An event that occurs once per frame when previewing. Preview callback is registered when an user adds a callback explicitly to avoid useless P/Invoke.

Declaration


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public event EventHandler<MediaPacketPreviewEventArgs> MediaPacketPreview

Event Type

Type	Description
System.EventHandler<MediaPacketPreviewEventArgs>

API Level: 3

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Preview

An event that occurs once per frame when previewing. Preview callback is registered when an user adds a callback explicitly to avoid useless P/Invoke.

Declaration


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public event EventHandler<PreviewEventArgs> Preview

Event Type

Type	Description
System.EventHandler<PreviewEventArgs>

API Level: 3

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StateChanged

An event that occurs when the camera state is changed.

Declaration


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public event EventHandler<CameraStateChangedEventArgs> StateChanged

Event Type

Type	Description
System.EventHandler<CameraStateChangedEventArgs>

API Level: 3

Implements

System.IDisposable