MultiMedia_CameraStateCallback

Overview

Provides callbacks for camera states to configure responses to the states.

Since:

1.0

Version:

1.0

Summary

Files

File Name Description
camera_state_callback.h Declares functions in the CameraStateCallback class.

Data Structures

Data Structure Name Description
OHOS::Media::CameraStateCallback Provides functions to response to camera states.

Functions

Function Name Description
OHOS::Media::CameraStateCallback::CameraStateCallback ()=default A constructor used to create a CameraStateCallback instance.
OHOS::Media::CameraStateCallback::~CameraStateCallback () virtual A destructor used to delete the CameraStateCallback instance.
OHOS::Media::CameraStateCallback::OnCreated (Camera &c) virtual void Called when the camera is successfully created.
OHOS::Media::CameraStateCallback::OnCreateFailed (const std::string cameraId, int32_t errorCode) virtual void Called when the camera fails to be created.
OHOS::Media::CameraStateCallback::OnReleased (Camera &c) virtual void Called when the camera is released.
OHOS::Media::CameraStateCallback::OnConfigured (Camera &c) virtual void Called when the camera is configured.
OHOS::Media::CameraStateCallback::OnConfigureFailed (const std::string cameraId, int32_t errorCode) virtual void Called when the camera fails to be configured.

Details

Function Documentation

CameraStateCallback()


1. OHOS::Media::CameraStateCallback::CameraStateCallback ()

Description:

A constructor used to create a CameraStateCallback instance.

OnConfigured()


1. virtual void OHOS::Media::CameraStateCallback::OnConfigured ([Camera]($api-api-SmartVision-Devices-OHOS-Media-Camera.md) & c)

Description:

Called when the camera is configured.

Parameters:

Name Description
c camera Indicates the Camera object.

OnConfigureFailed()


1. virtual void OHOS::Media::CameraStateCallback::OnConfigureFailed (const std::string cameraId, int32_t errorCode )

Description:

Called when the camera fails to be configured.

Parameters:

Name Description
c Indicates the Camera object.
errorCode Indicates the error code.

OnCreated()


1. virtual void OHOS::Media::CameraStateCallback::OnCreated ([Camera]($api-api-SmartVision-Devices-OHOS-Media-Camera.md) & c)

Description:

Called when the camera is successfully created.

Parameters:

Name Description
c Indicates the Camera object.

OnCreateFailed()


1. virtual void OHOS::Media::CameraStateCallback::OnCreateFailed (const std::string cameraId, int32_t errorCode )

Description:

Called when the camera fails to be created.

Parameters:

Name Description
cameraId Indicates the camera ID.
errorCode Indicates the error code.

OnReleased()


1. virtual void OHOS::Media::CameraStateCallback::OnReleased ([Camera]($api-api-SmartVision-Devices-OHOS-Media-Camera.md) & c)

Description:

Called when the camera is released.

Parameters:

Name Description
c Indicates the Camera object.

~CameraStateCallback()


1. virtual OHOS::Media::CameraStateCallback::~CameraStateCallback ()

Description:

A destructor used to delete the CameraStateCallback instance.