The Camera API provides functions for camera preview, capture, and focusing.

Required Header

#include <camera.h>

Overview

The Camera API allows application developers to support using the camera. It includes functions that capture photos and support setting up notifications for state changes of capturing, previewing, focusing, information about resolution and binary data format, and functions for artistic picture manipulations like sepia, negative, sketch, and many more.

The Camera API allows creation of components required in taking pictures including:

selecting proper exposure parameters
selecting a proper output format
displaying a photo preview
triggering the capture phase
controlling and displaying the camera state
getting supported formats and picture resolutions
getting a preview format and a resolution

The Camera API also notifies you (by callback mechanism) when a significant picture parameter changes e.g. focus.

State Diagram

State Transitions

FUNCTION	PRE-STATE	POST-STATE	SYNC TYPE
camera_create()	NONE	CREATED	SYNC
camera_destroy()	CREATED	NONE	SYNC
camera_start_preview()	CREATED/CAPTURED	PREVIEW	SYNC
camera_stop_preview()	PREVIEW	CREATED	SYNC
camera_start_capture()	PREVIEW	CAPTURING -> CAPTURED*	SYNC

(*) The transition from the CAPTURING state to the CAPTURED state will be processed automatically.

Callback(Event) Operations

The callback mechanism is used to notify the application about significant camera events.

REGISTER	UNREGISTER	CALLBACK	DESCRIPTION
camera_set_preview_cb()	camera_unset_preview_cb()	camera_preview_cb()	This callback is used to display the preview (it delivers copies of previous frames)
camera_set_state_changed_cb()	camera_unset_state_changed_cb()	camera_state_changed_cb()	This callback is used to notify that the camera state has changed. Not executed in the recorder mode
camera_set_focus_changed_cb()	camera_unset_focus_changed_cb()	camera_focus_changed_cb()	This callback is used to notify that the camera has changed focus (and it is ready to shoot)
camera_set_error_cb()	camera_unset_error_cb()	camera_error_cb()	This callback is used to notify that an error has occurred

Foreach Operations

FOREACH	CALLBACK	DESCRIPTION
camera_foreach_supported_preview_resolution()	camera_supported_preview_resolution_cb()	Supported preview resolutions
camera_foreach_supported_capture_resolution()	camera_supported_capture_resolution_cb()	Supported camera capture resolutions
camera_foreach_supported_capture_format()	camera_supported_capture_format_cb()	Supported camera capture formats
camera_foreach_supported_preview_format()	camera_supported_preview_format_cb()	Supported camera preview format

Related Features

This API is related with the following features:

http://tizen.org/feature/camera
http://tizen.org/feature/camera.back
http://tizen.org/feature/camera.back.flash
http://tizen.org/feature/camera.front
http://tizen.org/feature/camera.front.flash

It is recommended to design feature related codes in your application for reliability.
You can check if a device supports the related features for this API by using System Information, thereby controlling the procedure of your application.
To ensure your application is only running on the device with specific features, please define the features in your manifest file using the manifest editor in the SDK.
More details on featuring your application can be found from Feature Element.

Functions
int	camera_create (camera_device_e device, camera_h *camera)
	Creates a new camera handle for controlling a camera.
int	camera_change_device (camera_h camera, camera_device_e device)
	Changes the camera device.
int	camera_destroy (camera_h camera)
	Destroys the camera handle and releases all its resources.
int	camera_start_preview (camera_h camera)
	Starts capturing and drawing preview frames on the screen.
int	camera_stop_preview (camera_h camera)
	Stops capturing and drawing preview frames.
int	camera_start_capture (camera_h camera, camera_capturing_cb capturing_cb, camera_capture_completed_cb completed_cb, void *user_data)
	Starts capturing of still images.
int	camera_start_continuous_capture (camera_h camera, int count, int interval, camera_capturing_cb capturing_cb, camera_capture_completed_cb completed_cb, void *user_data)
	Starts continuously capturing still images.
int	camera_stop_continuous_capture (camera_h camera)
	Aborts continuous capturing.
int	camera_get_state (camera_h camera, camera_state_e *state)
	Gets the state of the camera.
int	camera_start_focusing (camera_h camera, bool continuous)
	Starts camera auto-focusing, asynchronously.
int	camera_cancel_focusing (camera_h camera)
	Stops camera auto focusing.
int	camera_set_display (camera_h camera, camera_display_type_e type, camera_display_h display)
	Sets the display handle to show preview images.
int	camera_set_preview_resolution (camera_h camera, int width, int height)
	Sets the resolution of the preview.
int	camera_get_preview_resolution (camera_h camera, int width, int height)
	Gets the resolution of the preview.
int	camera_get_recommended_preview_resolution (camera_h camera, int width, int height)
	Gets the recommended preview resolution.
int	camera_start_face_detection (camera_h camera, camera_face_detected_cb callback, void *user_data)
	Starts face detection.
int	camera_stop_face_detection (camera_h camera)
	Stops face detection.
int	camera_set_display_reuse_hint (camera_h camera, bool hint)
	Sets the hint for display reuse.
int	camera_get_display_reuse_hint (camera_h camera, bool *hint)
	Gets the hint for display reuse.
int	camera_set_capture_resolution (camera_h camera, int width, int height)
	Sets the resolution of the captured image.
int	camera_get_capture_resolution (camera_h camera, int width, int height)
	Gets the resolution of the captured image.
int	camera_set_capture_format (camera_h camera, camera_pixel_format_e format)
	Sets the format of an image to be captured.
int	camera_get_capture_format (camera_h camera, camera_pixel_format_e *format)
	Gets the format of the image to be captured.
int	camera_set_preview_format (camera_h camera, camera_pixel_format_e format)
	Sets the preview data format.
int	camera_get_preview_format (camera_h camera, camera_pixel_format_e *format)
	Gets the format of the preview stream.
int	camera_get_facing_direction (camera_h camera, camera_facing_direction_e *facing_direction)
	Gets the facing direction of camera module.
int	camera_get_flash_state (camera_device_e device, camera_flash_state_e *state)
	Gets the camera's flash state.
int	camera_set_preview_cb (camera_h camera, camera_preview_cb callback, void *user_data)
	Registers a callback function to be called once per frame when previewing.
int	camera_unset_preview_cb (camera_h camera)
	Unregisters the callback function.
int	camera_set_media_packet_preview_cb (camera_h camera, camera_media_packet_preview_cb callback, void *user_data)
	Registers a media packet callback function to be called once per frame when previewing.
int	camera_unset_media_packet_preview_cb (camera_h camera)
	Unregisters the media packet callback function.
int	camera_set_state_changed_cb (camera_h camera, camera_state_changed_cb callback, void *user_data)
	Registers a callback function to be called when the camera state changes.
int	camera_unset_state_changed_cb (camera_h camera)
	Unregisters the callback function.
int	camera_set_interrupted_cb (camera_h camera, camera_interrupted_cb callback, void *user_data)
	Registers a callback function to be called when the camera is interrupted by policy.
int	camera_unset_interrupted_cb (camera_h camera)
	Unregisters the callback function.
int	camera_set_interrupt_started_cb (camera_h camera, camera_interrupt_started_cb callback, void *user_data)
	Registers a callback function to be called when the camera interrupt is started by policy.
int	camera_unset_interrupt_started_cb (camera_h camera)
	Unregisters the callback function.
int	camera_set_focus_changed_cb (camera_h camera, camera_focus_changed_cb callback, void *user_data)
	Registers a callback function to be called when the auto-focus state changes.
int	camera_unset_focus_changed_cb (camera_h camera)
	Unregisters the callback function.
int	camera_set_error_cb (camera_h camera, camera_error_cb callback, void *user_data)
	Registers a callback function to be called when an asynchronous operation error occurs.
int	camera_unset_error_cb (camera_h camera)
	Unregisters the callback function.
int	camera_get_device_state (camera_device_e device, camera_device_state_e *state)
	Gets the state of camera device.
int	camera_add_device_state_changed_cb (camera_device_state_changed_cb callback, void user_data, int cb_id)
	Registers a callback function to be called when the camera device state changes.
int	camera_remove_device_state_changed_cb (int cb_id)
	Unregisters the callback function.
Typedefs
typedef struct camera_cli_s *	camera_h
	The Camera handle.
typedef void *	camera_display_h
	The Camera display handle.
typedef void(*	camera_state_changed_cb )(camera_state_e previous, camera_state_e current, bool by_policy, void *user_data)
	Called when the camera state is changed.
typedef void(*	camera_device_state_changed_cb )(camera_device_e device, camera_device_state_e state, void *user_data)
	Called when the camera device state is changed.
typedef void(*	camera_interrupted_cb )(camera_policy_e policy, camera_state_e previous, camera_state_e current, void *user_data)
	Called when the camera is interrupted by policy.
typedef void(*	camera_interrupt_started_cb )(camera_policy_e policy, camera_state_e state, void *user_data)
	Called when the camera interrupt is started by policy.
typedef void(*	camera_focus_changed_cb )(camera_focus_state_e state, void *user_data)
	Called when the camera focus state is changed.
typedef void(*	camera_preview_cb )(camera_preview_data_s frame, void user_data)
	Called to register for notifications about delivering a copy of the new preview frame when every preview frame is displayed.
typedef void(*	camera_media_packet_preview_cb )(media_packet_h pkt, void *user_data)
	Called to register for notifications about delivering media packet when every preview frame is displayed.
typedef void(*	camera_capturing_cb )(camera_image_data_s image, camera_image_data_s postview, camera_image_data_s thumbnail, void user_data)
	Called to get information about image data taken by the camera once per frame while capturing.
typedef void(*	camera_capture_completed_cb )(void *user_data)
	Called when the camera capturing completes.
typedef void(*	camera_error_cb )(camera_error_e error, camera_state_e current_state, void *user_data)
	Called when an error occurs.
typedef void(*	camera_face_detected_cb )(camera_detected_face_s faces, int count, void user_data)
	Called when a face is detected in the preview frame.
Defines
#define	GET_DISPLAY(x) (void*)(x)
	Gets a display handle.

Define Documentation

#define GET_DISPLAY ( x ) (void*)(x)

Gets a display handle.

Since :: 2.3.1

Typedef Documentation

typedef void(* camera_capture_completed_cb)(void *user_data)

Called when the camera capturing completes.

Since :: 2.3.1

Remarks:: The callback is called after camera_capturing_cb() is completed.
If you want to show the user a preview after capturing is finished,
an application can use camera_start_preview() after calling this callback.

Parameters:

[in] user_data The user data passed from the callback registration function

Precondition:: This callback function is invoked if it is registered using camera_start_capture() or camera_start_continuous_capture().

See also:: camera_start_capture(); camera_start_continuous_capture(); camera_capturing_cb()

typedef void(* camera_capturing_cb)(camera_image_data_s *image, camera_image_data_s *postview, camera_image_data_s *thumbnail, void *user_data)

Called to get information about image data taken by the camera once per frame while capturing.

Since :: 2.3.1

Remarks:: This function is issued in the context of internal framework so the UI update code should not be directly invoked. You must not call camera_start_preview() within this callback.

Parameters:

[in]	image	The image data of the captured picture
[in]	postview	The image data of the postview
[in]	thumbnail	The image data of the thumbnail (it should be `NULL` if the available thumbnail data does not exist)
[in]	user_data	The user data passed from the callback registration function

Precondition:: camera_start_capture() or camera_start_continuous_capture() will invoke this callback function if it is registered using camera_start_capture() or camera_start_continuous_capture().

See also:: camera_start_capture(); camera_start_continuous_capture(); camera_capture_completed_cb()

typedef void(* camera_device_state_changed_cb)(camera_device_e device, camera_device_state_e state, void *user_data)

Called when the camera device state is changed.

Since :: 3.0

Parameters:

[in]	device	The hardware camera type
[in]	state	The state of the camera device
[in]	user_data	The user data passed from the callback registration function

See also:: camera_add_device_state_changed_cb()

typedef void* camera_display_h

The Camera display handle.

Since :: 2.3.1

typedef void(* camera_error_cb)(camera_error_e error, camera_state_e current_state, void *user_data)

Called when an error occurs.

Since :: 2.3.1

Remarks:: This callback informs about a critical error situation.
When this callback is invoked, the user should release the resource and terminate the application.
In case of errors, one of these codes occur:
CAMERA_ERROR_DEVICE,
CAMERA_ERROR_INVALID_OPERATION,
CAMERA_ERROR_OUT_OF_MEMORY.

Parameters:

[in]	error	The error code
[in]	current_state	The current state of the camera
[in]	user_data	The user data passed from the callback registration function

Precondition:: This callback function is invoked if it is registered using camera_set_error_cb().

See also:: camera_set_error_cb(); camera_unset_error_cb()

typedef void(* camera_face_detected_cb)(camera_detected_face_s *faces, int count, void *user_data)

Called when a face is detected in the preview frame.

Since :: 2.3.1

Parameters:

[in]	faces	The detected face array
[in]	count	The length of the array
[in]	user_data	The user data passed from the callback registration function

See also:: camera_start_face_detection()

typedef void(* camera_focus_changed_cb)(camera_focus_state_e state, void *user_data)

Called when the camera focus state is changed.

When the camera auto focus completes or a change to the focus state occurs, this callback is invoked.

Changes of focus state are as follows:
CAMERA_FOCUS_STATE_RELEASED -> start focusing -> CAMERA_FOCUS_STATE_ONGOING -> working -> CAMERA_FOCUS_STATE_FOCUSED or CAMERA_FOCUS_STATE_FAILED.

Since :: 2.3.1

Parameters:

[in]	state	The current state of the auto-focus
[in]	user_data	The user data passed from the callback registration function

Precondition:: camera_start_focusing() will invoke this callback if you register it using camera_set_focus_changed_cb().

See also:: camera_set_focus_changed_cb(); camera_unset_focus_changed_cb(); camera_start_focusing(); camera_cancel_focusing()

typedef struct camera_cli_s* camera_h

The Camera handle.

Since :: 2.3.1

See also:: recorder_create_videorecorder()

typedef void(* camera_interrupt_started_cb)(camera_policy_e policy, camera_state_e state, void *user_data)

Called when the camera interrupt is started by policy.

Since :: 4.0

Remarks:: This callback is called before interrupt handling is started.

Parameters:

[in]	policy	The policy that is interrupting the camera
[in]	state	The current state of the camera
[in]	user_data	The user data passed from the callback registration function

See also:: camera_set_interrupt_started_cb()

typedef void(* camera_interrupted_cb)(camera_policy_e policy, camera_state_e previous, camera_state_e current, void *user_data)

Called when the camera is interrupted by policy.

Since :: 2.3.1

Remarks:: This callback is called after interrupt handling is completed.

Parameters:

[in]	policy	The policy that interrupted the camera
[in]	previous	The previous state of the camera
[in]	current	The current state of the camera
[in]	user_data	The user data passed from the callback registration function

See also:: camera_set_interrupted_cb()

typedef void(* camera_media_packet_preview_cb)(media_packet_h pkt, void *user_data)

Called to register for notifications about delivering media packet when every preview frame is displayed.

Since :: 2.3.1

Remarks:: This function is issued in the context of internal framework so the UI update code should not be directly invoked.
If the camera is used as a recorder then this callback function won't be called.
and the packet should be released by media_packet_destroy() after use.

Parameters:

[in]	pkt	Reference pointer to media packet
[in]	user_data	The user data passed from the callback registration function

Precondition:: camera_start_preview() will invoke this callback function if you register this callback using camera_set_media_packet_preview_cb().

See also:: camera_start_preview(); camera_set_media_packet_preview_cb(); camera_unset_media_packet_preview_cb()

typedef void(* camera_preview_cb)(camera_preview_data_s *frame, void *user_data)

Called to register for notifications about delivering a copy of the new preview frame when every preview frame is displayed.

Since :: 2.3.1

Remarks:: This function is issued in the context of internal framework so the UI update code should not be directly invoked.
If the camera is used as a recorder then this callback function won't be called.

Parameters:

[in]	frame	The reference pointer to preview stream data
[in]	user_data	The user data passed from the callback registration function

Precondition:: camera_start_preview() will invoke this callback function if you register this callback using camera_set_preview_cb().

See also:: camera_start_preview(); camera_set_preview_cb(); camera_unset_preview_cb()

typedef void(* camera_state_changed_cb)(camera_state_e previous, camera_state_e current, bool by_policy, void *user_data)

Called when the camera state is changed.

Since :: 2.3.1

Parameters:

[in]	previous	The previous state of the camera
[in]	current	The current state of the camera
[in]	by_policy	If `true` the state is changed by policy, otherwise `false`
[in]	user_data	The user data passed from the callback registration function

Precondition:: camera_start_preview(), camera_start_capture() or camera_stop_preview() will invoke this callback if you register this callback using camera_set_state_changed_cb().

See also:: camera_set_state_changed_cb()

Enumeration Type Documentation

enum camera_device_e

Enumeration for the camera device.

Since :: 2.3.1

Enumerator:

CAMERA_DEVICE_CAMERA0	Primary camera
CAMERA_DEVICE_CAMERA1	Secondary camera
CAMERA_DEVICE_CAMERA2	Third camera (Since 5.0)
CAMERA_DEVICE_CAMERA3	4th camera (Since 5.0)
CAMERA_DEVICE_CAMERA4	5th camera (Since 5.0)
CAMERA_DEVICE_CAMERA5	6th camera (Since 5.0)
CAMERA_DEVICE_CAMERA6	7th camera (Since 5.0)
CAMERA_DEVICE_CAMERA7	8th camera (Since 5.0)
CAMERA_DEVICE_CAMERA8	9th camera (Since 5.0)
CAMERA_DEVICE_CAMERA9	10th camera (Since 5.0)

enum camera_device_state_e

Enumeration for the camera device state.

Since :: 3.0

Enumerator:

CAMERA_DEVICE_STATE_NULL	Not opened
CAMERA_DEVICE_STATE_OPENED	Opened
CAMERA_DEVICE_STATE_WORKING	Now previewing or capturing or is being used for video recording

enum camera_display_type_e

Enumeration for the camera display type.

Since :: 2.3.1

Enumerator:

CAMERA_DISPLAY_TYPE_OVERLAY	Overlay surface display
CAMERA_DISPLAY_TYPE_EVAS	Evas object surface display
CAMERA_DISPLAY_TYPE_NONE	This disposes off buffers

enum camera_error_e

Enumeration for the error codes of Camera.

Since :: 2.3.1

Enumerator:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_OUT_OF_MEMORY	Out of memory
CAMERA_ERROR_DEVICE	Device error
CAMERA_ERROR_INVALID_OPERATION	Internal error
CAMERA_ERROR_SECURITY_RESTRICTED	Restricted by security system policy
CAMERA_ERROR_DEVICE_BUSY	The device is using another application or working on some operation
CAMERA_ERROR_DEVICE_NOT_FOUND	No camera device
CAMERA_ERROR_ESD	ESD situation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_RESOURCE_CONFLICT	Blocked by resource conflict (Since 3.0)
CAMERA_ERROR_SERVICE_DISCONNECTED	Socket connection lost (Since 3.0)

enum camera_facing_direction_e

Enumeration for the facing direction of camera module.

Since :: 3.0

Enumerator:

CAMERA_FACING_DIRECTION_REAR	Rear
CAMERA_FACING_DIRECTION_FRONT	Front

enum camera_flash_state_e

Enumeration for the current flash state.

Since :: 3.0

Enumerator:

CAMERA_FLASH_STATE_NOT_USED	Flash is not used now through camera API
CAMERA_FLASH_STATE_USED	Flash is used now through camera API

enum camera_flip_e

Enumeration for the camera flip type.

Since :: 2.3.1

Enumerator:

CAMERA_FLIP_NONE	No Flip
CAMERA_FLIP_HORIZONTAL	Horizontal flip
CAMERA_FLIP_VERTICAL	Vertical flip
CAMERA_FLIP_BOTH	Horizontal and vertical flip

enum camera_focus_state_e

Enumeration for the camera focus state.

Since :: 2.3.1

Enumerator:

CAMERA_FOCUS_STATE_RELEASED	Focus released
CAMERA_FOCUS_STATE_ONGOING	Focus in progress
CAMERA_FOCUS_STATE_FOCUSED	Focus succeeded
CAMERA_FOCUS_STATE_FAILED	Focus failed

enum camera_pixel_format_e

Enumeration for the camera pixel format.

Since :: 2.3.1

Remarks:: If CAMERA_PIXEL_FORMAT_INVZ is set, the type of display should be CAMERA_DISPLAY_TYPE_NONE.
Otherwise, camera_start_preview() will return CAMERA_ERROR_INVALID_OPERATION. (Since 5.0)

Enumerator:

CAMERA_PIXEL_FORMAT_INVALID	Invalid pixel format
CAMERA_PIXEL_FORMAT_NV12	NV12 pixel format
CAMERA_PIXEL_FORMAT_NV12T	NV12 Tiled pixel format
CAMERA_PIXEL_FORMAT_NV16	NV16 pixel format
CAMERA_PIXEL_FORMAT_NV21	NV21 pixel format
CAMERA_PIXEL_FORMAT_YUYV	YUYV(YUY2) pixel format
CAMERA_PIXEL_FORMAT_UYVY	UYVY pixel format
CAMERA_PIXEL_FORMAT_422P	YUV422(Y:U:V) planar pixel format
CAMERA_PIXEL_FORMAT_I420	I420 pixel format
CAMERA_PIXEL_FORMAT_YV12	YV12 pixel format
CAMERA_PIXEL_FORMAT_RGB565	RGB565 pixel format
CAMERA_PIXEL_FORMAT_RGB888	RGB888 pixel format
CAMERA_PIXEL_FORMAT_RGBA	RGBA pixel format
CAMERA_PIXEL_FORMAT_ARGB	ARGB pixel format
CAMERA_PIXEL_FORMAT_JPEG	Encoded pixel format
CAMERA_PIXEL_FORMAT_H264	Encoded pixel format : H264 (Since 3.0)
CAMERA_PIXEL_FORMAT_INVZ	Depth pixel format : INVZ (Since 5.0)

enum camera_policy_e

Enumeration for the camera policy.

Since :: 2.3.1

Enumerator:

CAMERA_POLICY_NONE	None
CAMERA_POLICY_SECURITY	Security policy
CAMERA_POLICY_RESOURCE_CONFLICT	Resource conflict (Since 3.0)

enum camera_rotation_e

Enumeration for the camera rotation type.

Since :: 2.3.1

Enumerator:

CAMERA_ROTATION_NONE	No rotation
CAMERA_ROTATION_90	90 degree rotation
CAMERA_ROTATION_180	180 degree rotation
CAMERA_ROTATION_270	270 degree rotation

enum camera_state_e

Enumeration for the camera state.

Since :: 2.3.1

Enumerator:

CAMERA_STATE_NONE	Before creating
CAMERA_STATE_CREATED	Created, but not initialized yet
CAMERA_STATE_PREVIEW	Preview
CAMERA_STATE_CAPTURING	While capturing
CAMERA_STATE_CAPTURED	After capturing

Function Documentation

int camera_add_device_state_changed_cb	(	camera_device_state_changed_cb	callback,
		void *	user_data,
		int *	cb_id
	)

Registers a callback function to be called when the camera device state changes.

Since :: 3.0

Parameters:

[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function
[out]	cb_id	The id of registered callback

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_OUT_OF_MEMORY	Out of memory
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

Postcondition:: This function will invoke camera_device_state_changed_cb() when the camera device's state changes.

See also:: camera_remove_device_state_changed_cb(); camera_device_state_changed_cb()

int camera_cancel_focusing ( camera_h camera )

Stops camera auto focusing.

Since :: 2.3.1

Privilege Level:: public

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

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.

See also:: camera_start_focusing(); camera_focus_changed_cb()

int camera_change_device	(	camera_h	camera,
		camera_device_e	device
	)

Changes the camera device.

Since :: 3.0

Remarks:: This function can be used to change camera device simply without camera_destroy() and camera_create().
If display reuse hint is set by camera_set_display_reuse_hint() before stopping the preview,
display handle will be reused and last frame on display can be kept even though camera device is changed.

Parameters:

[in]	camera	The handle to the camera
[in]	device	The hardware camera to access

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_OUT_OF_MEMORY	Out of memory
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED.

Postcondition:: If it succeeds, the camera attributes and settings will be reset.

See also:: camera_set_display_reuse_hint(); camera_get_display_reuse_hint()

int camera_create	(	camera_device_e	device,
		camera_h *	camera
	)

Creates a new camera handle for controlling a camera.

Since :: 2.3.1

Remarks:: Multiple handles on a context at the same time are allowed to be created. However, camera cannot guarantee proper operation because of limited resources, such as camera device, audio device, and display device.
. A camera must be released using camera_destroy().; The privilege http://tizen.org/privilege/camera is not required since 4.0,
but it is required in all earlier versions.

Parameters:

[in]	device	The hardware camera to access
[out]	camera	A newly returned handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_OUT_OF_MEMORY	Out of memory
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

Postcondition:: If it succeeds, the camera state will be CAMERA_STATE_CREATED.

See also:: camera_destroy()

int camera_destroy ( camera_h camera )

Destroys the camera handle and releases all its resources.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

See also:: camera_create()

int camera_get_capture_format	(	camera_h	camera,
		camera_pixel_format_e *	format
	)

Gets the format of the image to be captured.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[out]	format	The format of the image to be captured

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_capture_format(); camera_foreach_supported_capture_format()

int camera_get_capture_resolution	(	camera_h	camera,
		int *	width,
		int *	height
	)

Gets the resolution of the captured image.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[out]	width	The capture width
[out]	height	The capture height

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_capture_resolution(); camera_foreach_supported_capture_resolution()

int camera_get_device_state	(	camera_device_e	device,
		camera_device_state_e *	state
	)

Gets the state of camera device.

Since :: 3.0

Parameters:

[in]	device	The hardware camera type
[out]	state	The current state of the device

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

int camera_get_display_reuse_hint	(	camera_h	camera,
		bool *	hint
	)

Gets the hint for display reuse.

Since :: 3.0

Remarks:: If the current display type is CAMERA_DISPLAY_TYPE_NONE, this function will return CAMERA_ERROR_INVALID_OPERATION.

Parameters:

[in]	camera	The handle to the camera
[out]	hint	The hint for display reuse; true - reuse the display, false - do not reuse

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_OPERATION	Internal error
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_get_display_reuse_hint(); camera_change_device()

int camera_get_facing_direction	(	camera_h	camera,
		camera_facing_direction_e *	facing_direction
	)

Gets the facing direction of camera module.

Since :: 3.0

Parameters:

[in]	camera	The handle to the camera
[out]	facing_direction	The facing direction of camera module

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_OPERATION	Internal error
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

int camera_get_flash_state	(	camera_device_e	device,
		camera_flash_state_e *	state
	)

Gets the camera's flash state.

Since :: 3.0

Parameters:

[in]	device	The hardware camera to access
[out]	state	The current flash state

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_OPERATION	Internal error
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

See also:: camera_attr_set_flash_mode(); camera_attr_get_flash_mode()

int camera_get_preview_format	(	camera_h	camera,
		camera_pixel_format_e *	format
	)

Gets the format of the preview stream.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[out]	format	The preview data format

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_preview_format(); camera_foreach_supported_preview_format()

int camera_get_preview_resolution	(	camera_h	camera,
		int *	width,
		int *	height
	)

Gets the resolution of the preview.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[out]	width	The preview width
[out]	height	The preview height

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_preview_resolution(); camera_foreach_supported_preview_resolution()

int camera_get_recommended_preview_resolution	(	camera_h	camera,
		int *	width,
		int *	height
	)

Gets the recommended preview resolution.

Since :: 2.3.1

Remarks:: Depending on the capture resolution aspect ratio and display resolution, the recommended preview resolution is determined.

Parameters:

[in]	camera	The handle to the camera
[out]	width	The preview width
[out]	height	The preview height

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_preview_resolution(); camera_foreach_supported_preview_resolution()

int camera_get_state	(	camera_h	camera,
		camera_state_e *	state
	)

Gets the state of the camera.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[out]	state	The current state of the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_create(); camera_start_preview(); camera_stop_preview(); camera_start_capture()

int camera_remove_device_state_changed_cb ( int cb_id )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] cb_id The id of registered callback

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported

See also:: camera_add_device_state_changed_cb()

int camera_set_capture_format	(	camera_h	camera,
		camera_pixel_format_e	format
	)

Sets the format of an image to be captured.

Since :: 2.3.1

Remarks:: This function should be called before capturing (see camera_start_capture()).

Parameters:

[in]	camera	The handle to the camera
[out]	format	The format of the image to be captured

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED or CAMERA_STATE_PREVIEW.

See also:: camera_start_capture(); camera_get_capture_format(); camera_foreach_supported_capture_format()

int camera_set_capture_resolution	(	camera_h	camera,
		int	width,
		int	height
	)

Sets the resolution of the captured image.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[in]	width	The capture width
[in]	height	The capture height

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED or CAMERA_STATE_PREVIEW.

See also:: camera_start_capture(); camera_get_capture_resolution(); camera_foreach_supported_capture_resolution()

int camera_set_display	(	camera_h	camera,
		camera_display_type_e	type,
		camera_display_h	display
	)

Sets the display handle to show preview images.

Since :: 2.3.1

Remarks:: This function must be called before previewing (see camera_start_preview()). In Custom ROI display mode, camera_attr_set_display_roi_area() function must be called before calling this function.; This function must be called in main thread of the application. Otherwise, it will return CAMERA_ERROR_INVALID_OPERATION by internal restriction. To avoid CAMERA_ERROR_INVALID_OPERATION in sub thread, ecore_thread_main_loop_begin() and ecore_thread_main_loop_end() can be used, but deadlock can occur if the main thread is busy. So, it's not recommended to use them. (Since 5.0)

Parameters:

[in]	camera	The handle to the camera
[in]	type	The display type
[in]	display	The display handle from GET_DISPLAY

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED.

See also:: camera_start_preview(); GET_DISPLAY; ecore_thread_main_loop_begin(); ecore_thread_main_loop_end()

int camera_set_display_reuse_hint	(	camera_h	camera,
		bool	hint
	)

Sets the hint for display reuse.

Since :: 3.0

If the hint is set to true, the display will be reused when the camera device is changed with camera_change_device().

Remarks:: If the current display type is CAMERA_DISPLAY_TYPE_NONE, this function will return CAMERA_ERROR_INVALID_OPERATION.

Parameters:

[in]	camera	The handle to the camera
[in]	hint	The hint for display reuse; true - reuse the display, false - do not reuse

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Internal error
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.

See also:: camera_get_display_reuse_hint(); camera_change_device()

int camera_set_error_cb	(	camera_h	camera,
		camera_error_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when an asynchronous operation error occurs.

Since :: 2.3.1

Remarks:: This callback informs about a critical error situation.
When this callback is invoked, the user should release the resource and terminate the application.
In case of errors, one of the following codes will occur:
CAMERA_ERROR_DEVICE,
CAMERA_ERROR_INVALID_OPERATION,
CAMERA_ERROR_OUT_OF_MEMORY.

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Postcondition:: This function will invoke camera_error_cb() when an asynchronous operation error occurs.

See also:: camera_unset_error_cb(); camera_error_cb()

int camera_set_focus_changed_cb	(	camera_h	camera,
		camera_focus_changed_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when the auto-focus state changes.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Postcondition:: This function will invoke camera_focus_changed_cb() when the auto-focus state changes.

See also:: camera_start_focusing(); camera_cancel_focusing(); camera_unset_focus_changed_cb(); camera_focus_changed_cb()

int camera_set_interrupt_started_cb	(	camera_h	camera,
		camera_interrupt_started_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when the camera interrupt is started by policy.

Since :: 4.0

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: camera_unset_interrupt_started_cb(); camera_interrupt_started_cb()

int camera_set_interrupted_cb	(	camera_h	camera,
		camera_interrupted_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when the camera is interrupted by policy.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_unset_interrupted_cb(); camera_interrupted_cb()

int camera_set_media_packet_preview_cb	(	camera_h	camera,
		camera_media_packet_preview_cb	callback,
		void *	user_data
	)

Registers a media packet callback function to be called once per frame when previewing.

Since :: 2.3.1

Remarks:: This callback does not work in video recorder mode.
This function should be called before previewing (see camera_start_preview())
A registered callback is called on the internal thread of the camera.
A video frame can be retrieved using a registered callback as a media packet.
The callback function holds the same buffer that will be drawn on the display device.
So if you change the media packet in a registered callback, it will be displayed on the device
and the media packet is available until it's destroyed by media_packet_destroy().

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to be registered
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera's state should be CAMERA_STATE_CREATED.

See also:: camera_start_preview(); camera_unset_media_packet_preview_cb(); camera_media_packet_preview_cb()

int camera_set_preview_cb	(	camera_h	camera,
		camera_preview_cb	callback,
		void *	user_data
	)

Registers a callback function to be called once per frame when previewing.

Since :: 2.3.1

Remarks:: This callback does not work in the video recorder mode.
Before 4.0, the only allowed state for calling this function was CAMERA_STATE_CREATED.
Since 4.0, CAMERA_STATE_PREVIEW has been added as an allowed state,
so that this function could be called before previewing or even while previewing.
A registered callback is called on the internal thread of the camera.
A video frame can be retrieved using a registered callback,
and the buffer is only available in a registered callback.
Since tizen 3.0, if you change the buffer in a registered callback,
it could not be displayed on the device in case of copied buffer.
and if camera_is_supported_media_packet_preview_cb() returns false,
it's copied buffer case.

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to be registered
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: Before 4.0 : The camera state must be set to CAMERA_STATE_CREATED.
Since 4.0 : The camera state must be set to CAMERA_STATE_CREATED or CAMERA_STATE_PREVIEW.

See also:: camera_start_preview(); camera_unset_preview_cb(); camera_preview_cb()

int camera_set_preview_format	(	camera_h	camera,
		camera_pixel_format_e	format
	)

Sets the preview data format.

Since :: 2.3.1

Remarks:: This function should be called before previewing (see camera_start_preview()).

Parameters:

[in]	camera	The handle to the camera
[in]	format	The preview data format

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED.

See also:: camera_start_preview(); camera_get_preview_format(); camera_foreach_supported_preview_format()

int camera_set_preview_resolution	(	camera_h	camera,
		int	width,
		int	height
	)

Sets the resolution of the preview.

Since :: 2.3.1

Remarks:: This function should be called before previewing (camera_start_preview()).

Parameters:

[in]	camera	The handle to the camera
[in]	width	The preview width
[in]	height	The preview height

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED or CAMERA_STATE_PREVIEW.

See also:: camera_start_preview(); camera_get_preview_resolution(); camera_foreach_supported_preview_resolution()

int camera_set_state_changed_cb	(	camera_h	camera,
		camera_state_changed_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when the camera state changes.

Since :: 2.3.1

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Postcondition:: This function will invoke camera_state_changed_cb() when the camera state changes.

See also:: camera_unset_state_changed_cb(); camera_state_changed_cb()

int camera_start_capture	(	camera_h	camera,
		camera_capturing_cb	capturing_cb,
		camera_capture_completed_cb	completed_cb,
		void *	user_data
	)

Starts capturing of still images.

Since :: 2.3.1

Privilege Level:: public

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

Remarks:: This function causes the transition of the camera state from CAMERA_STATE_CAPTURING to CAMERA_STATE_CAPTURED automatically
and the corresponding callback function camera_capturing_cb() and camera_capture_completed_cb() will be invoked
The captured image will be delivered through camera_capturing_cb().
camera_capture_completed_cb() callback notifies about completion of camera_capturing_cb().
The camera's preview should be restarted by calling camera_start_preview().

Parameters:

[in]	camera	The handle to the camera
[in]	capturing_cb	The callback for capturing data
[in]	completed_cb	The callback for notification of completion
[in]	user_data	The user data

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.
If needed, modify capture resolution(camera_set_capture_resolution()), capture format(camera_set_capture_format()), or image quality(camera_attr_set_image_quality()).

Postcondition:: If it succeeds the camera state will be CAMERA_STATE_CAPTURED.

See also:: camera_start_preview(); camera_start_continuous_capture();; camera_foreach_supported_capture_resolution(); camera_set_capture_resolution(); camera_get_capture_resolution(); camera_foreach_supported_capture_format(); camera_set_capture_format(); camera_get_capture_format(); camera_attr_set_image_quality(); camera_attr_get_image_quality()

int camera_start_continuous_capture	(	camera_h	camera,
		int	count,
		int	interval,
		camera_capturing_cb	capturing_cb,
		camera_capture_completed_cb	completed_cb,
		void *	user_data
	)

Starts continuously capturing still images.

Since :: 2.3.1

Privilege Level:: public

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

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 CAMERA_STATE_CAPTURING to CAMERA_STATE_CAPTURED automatically
and the corresponding callback function camera_capturing_cb() and camera_capture_completed_cb() will be invoked
Each Captured image will be delivered through camera_capturing_cb().
The camera_capture_completed_cb() callback notifies about the completion of an entire capture.
The camera's preview should be restarted by calling camera_start_preview().
.

Parameters:

[in]	camera	The handle to the camera
[in]	count	The number of still images
[in]	interval	The interval of the capture (millisecond)
[in]	capturing_cb	The callback for capturing data
[in]	completed_cb	The callback for notification of completion
[in]	user_data	The user data

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Postcondition:: If it succeeds the camera state will be CAMERA_STATE_CAPTURED.

See also:: camera_start_preview(); camera_start_capture();; camera_stop_continuous_capture(); camera_is_supported_zero_shutter_lag()

int camera_start_face_detection	(	camera_h	camera,
		camera_face_detected_cb	callback,
		void *	user_data
	)

Starts face detection.

Since :: 2.3.1

Privilege Level:: public

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

Remarks:: This should be called after the preview is started.
This callback will be invoked when the face is detected in the preview frame.
Internally it starts continuous focus and focusing on the detected face.
When face detection is running, the camera_start_focusing(), camera_cancel_focusing(), camera_attr_set_af_mode(), camera_attr_set_af_area(), camera_attr_set_exposure_mode(), and camera_attr_set_whitebalance() settings are ignored.
If camera_stop_preview() is invoked, face detection is stopped and then preview is resumed using camera_start_preview(), this method should be called again to resume face detection.

Parameters:

[in]	camera	The handle to the camera
[in]	callback	The callback to notify face detection
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Not preview state
CAMERA_ERROR_INVALID_OPERATION	Not supported this feature
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be CAMERA_STATE_PREVIEW.

See also:: camera_stop_face_detection(); camera_face_detected_cb(); camera_is_supported_face_detection()

int camera_start_focusing	(	camera_h	camera,
		bool	continuous
	)

Starts camera auto-focusing, asynchronously.

Since :: 2.3.1

Privilege Level:: public

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

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

Parameters:

[in]	camera	The handle to the camera
[in]	continuous	The status of continuous focusing

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.

Postcondition:: The camera focus state will be CAMERA_FOCUS_STATE_ONGOING.

See also:: camera_cancel_focusing(); camera_set_focus_changed_cb(); camera_focus_changed_cb(); camera_attr_set_af_mode()

int camera_start_preview ( camera_h camera )

Starts capturing and drawing preview frames on the screen.

Since :: 2.3.1

Privilege Level:: public

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

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_RESOURCE_CONFLICT	Resource conflict error
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_DEVICE_BUSY	The device is being used in another application or is performing other operations
CAMERA_ERROR_DEVICE_NOT_FOUND	No camera device
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_CREATED or CAMERA_STATE_CAPTURED.
You must set the display handle.
If needed, modify preview FPS(camera_attr_set_preview_fps()), preview resolution(camera_set_preview_resolution()), or preview format(camera_set_preview_format()).

Postcondition:: If it succeeds, the camera state will be CAMERA_STATE_PREVIEW.
camera_preview_cb() will be called when preview image data becomes available.

See also:: camera_stop_preview(); camera_set_display(); camera_set_preview_cb(); camera_set_media_packet_preview_cb(); camera_foreach_supported_preview_resolution(); camera_set_preview_resolution(); camera_get_preview_resolution(); camera_foreach_supported_preview_format(); camera_set_preview_format(); camera_get_preview_format(); camera_attr_foreach_supported_fps(); camera_attr_set_preview_fps(); camera_attr_get_preview_fps()

int camera_stop_continuous_capture ( camera_h camera )

Aborts continuous capturing.

Since :: 2.3.1

Privilege Level:: public

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

Remarks:: The camera state will be changed to CAMERA_STATE_CAPTURED.

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.

See also:: camera_start_continuous_capture()

int camera_stop_face_detection ( camera_h camera )

Stops face detection.

Since :: 2.3.1

Privilege Level:: public

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

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: This should be called after face detection is started.

See also:: camera_start_face_detection(); camera_is_supported_face_detection()

int camera_stop_preview ( camera_h camera )

Stops capturing and drawing preview frames.

Since :: 2.3.1

Privilege Level:: public

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

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_INVALID_STATE	Invalid state
CAMERA_ERROR_INVALID_OPERATION	Invalid operation
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

Precondition:: The camera state must be set to CAMERA_STATE_PREVIEW.

Postcondition:: The camera state will be CAMERA_STATE_CREATED.

See also:: camera_start_preview(); camera_unset_preview_cb(); camera_unset_media_packet_preview_cb()

int camera_unset_error_cb ( camera_h camera )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_error_cb()

int camera_unset_focus_changed_cb ( camera_h camera )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_focus_changed_cb()

int camera_unset_interrupt_started_cb ( camera_h camera )

Unregisters the callback function.

Since :: 4.0

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: camera_set_interrupt_started_cb()

int camera_unset_interrupted_cb ( camera_h camera )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_interrupted_cb()

int camera_unset_media_packet_preview_cb ( camera_h camera )

Unregisters the media packet callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_media_packet_preview_cb()

int camera_unset_preview_cb ( camera_h camera )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_preview_cb()

int camera_unset_state_changed_cb ( camera_h camera )

Unregisters the callback function.

Since :: 2.3.1

Parameters:

[in] camera The handle to the camera

Returns:: 0 on success, otherwise a negative error value

Return values:

CAMERA_ERROR_NONE	Successful
CAMERA_ERROR_INVALID_PARAMETER	Invalid parameter
CAMERA_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
CAMERA_ERROR_NOT_SUPPORTED	The feature is not supported
CAMERA_ERROR_SERVICE_DISCONNECTED	The socket to multimedia server is disconnected

See also:: camera_set_state_changed_cb()

Required Header

Overview

State Diagram

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