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MuiltiMedia_CameraDeviceCallback.md 7.22 KB

# MuiltiMedia\_CameraDeviceCallback<a name="ZH-CN_TOPIC_0000001055198084"></a>

## **Overview**<a name="section413591637084827"></a>

Defines the  **CameraDeviceCallback**  class to response to device changes.

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section1653837725084827"></a>

## Files<a name="files"></a>

<a name="table1166137625084827"></a>
<table><thead align="left"><tr id="row808821122084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1864474420084827"><a name="p1864474420084827"></a><a name="p1864474420084827"></a>File Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1942447452084827"><a name="p1942447452084827"></a><a name="p1942447452084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row699804575084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p368747401084827"><a name="p368747401084827"></a><a name="p368747401084827"></a><a href="camera_device_callback-h.md">camera_device_callback.h</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p906448253084827"><a name="p906448253084827"></a><a name="p906448253084827"></a>Declares functions in the <strong id="b1059273210084827"><a name="b1059273210084827"></a><a name="b1059273210084827"></a>CameraDeviceCallback</strong> class to response to device changes. </p>
</td>
</tr>
</tbody>
</table>

## Data Structures<a name="nested-classes"></a>

<a name="table253129902084827"></a>
<table><thead align="left"><tr id="row1182116374084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p2147456721084827"><a name="p2147456721084827"></a><a name="p2147456721084827"></a>Data Structure Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p747754272084827"><a name="p747754272084827"></a><a name="p747754272084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row901225346084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1690201392084827"><a name="p1690201392084827"></a><a name="p1690201392084827"></a><a href="OHOS-Media-CameraDeviceCallback.md">OHOS::Media::CameraDeviceCallback</a></p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1020723619084827"><a name="p1020723619084827"></a><a name="p1020723619084827"></a>Provides functions to response to device changes. </p>
</td>
</tr>
</tbody>
</table>

## Functions<a name="func-members"></a>

<a name="table1864581230084827"></a>
<table><thead align="left"><tr id="row1897214698084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1383309640084827"><a name="p1383309640084827"></a><a name="p1383309640084827"></a>Function Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p46613135084827"><a name="p46613135084827"></a><a name="p46613135084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row1113525899084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p970319991084827"><a name="p970319991084827"></a><a name="p970319991084827"></a><a href="MuiltiMedia_CameraDeviceCallback.md#ga5e81f9fa5dd53d9d1f8ca0cc4497fd59">OHOS::Media::CameraDeviceCallback::CameraDeviceCallback</a> ()=default</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p346173646084827"><a name="p346173646084827"></a><a name="p346173646084827"></a>&nbsp;</p>
<p id="p1571074788084827"><a name="p1571074788084827"></a><a name="p1571074788084827"></a>A constructor used to create a <strong id="b1945517008084827"><a name="b1945517008084827"></a><a name="b1945517008084827"></a><a href="OHOS-Media-CameraDeviceCallback.md">CameraDeviceCallback</a></strong> instance. </p>
</td>
</tr>
<tr id="row1533766787084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p2124633561084827"><a name="p2124633561084827"></a><a name="p2124633561084827"></a><a href="MuiltiMedia_CameraDeviceCallback.md#gac88b6972227ec2ba65feeb15c31aea83">OHOS::Media::CameraDeviceCallback::~CameraDeviceCallback</a> ()=default</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1502111362084827"><a name="p1502111362084827"></a><a name="p1502111362084827"></a>virtual&nbsp;</p>
<p id="p1008722420084827"><a name="p1008722420084827"></a><a name="p1008722420084827"></a>A destructor used to delete the <strong id="b1825198355084827"><a name="b1825198355084827"></a><a name="b1825198355084827"></a><a href="OHOS-Media-CameraDeviceCallback.md">CameraDeviceCallback</a></strong> instance. </p>
</td>
</tr>
<tr id="row799793777084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p1995228876084827"><a name="p1995228876084827"></a><a name="p1995228876084827"></a><a href="MuiltiMedia_CameraDeviceCallback.md#ga2ae4d3d8ae13f73986f8dc7cf4bb7960">OHOS::Media::CameraDeviceCallback::OnCameraStatus</a> (std::string cameraId, int32_t status)</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p2131681073084827"><a name="p2131681073084827"></a><a name="p2131681073084827"></a>virtual void&nbsp;</p>
<p id="p2086952154084827"><a name="p2086952154084827"></a><a name="p2086952154084827"></a>Called when the camera state changes. </p>
</td>
</tr>
</tbody>
</table>

## **Details**<a name="section906863742084827"></a>

## **Function Documentation**<a name="section1932875114084827"></a>

## CameraDeviceCallback\(\)<a name="ga5e81f9fa5dd53d9d1f8ca0cc4497fd59"></a>

```
OHOS::Media::CameraDeviceCallback::CameraDeviceCallback ()
```

**Description:**

A constructor used to create a  **[CameraDeviceCallback](OHOS-Media-CameraDeviceCallback.md)**  instance.

## OnCameraStatus\(\)<a name="ga2ae4d3d8ae13f73986f8dc7cf4bb7960"></a>

```
virtual void OHOS::Media::CameraDeviceCallback::OnCameraStatus (std::string cameraId, int32_t status )
```

**Description:**

Called when the camera state changes.

**Parameters:**

<a name="table2095434998084827"></a>
<table><thead align="left"><tr id="row817289477084827"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1311098253084827"><a name="p1311098253084827"></a><a name="p1311098253084827"></a>Name</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p276452449084827"><a name="p276452449084827"></a><a name="p276452449084827"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row843978145084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">cameraId</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the camera ID. </td>
</tr>
<tr id="row943355761084827"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 ">status</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 ">Indicates the camera state. </td>
</tr>
</tbody>
</table>

## \~CameraDeviceCallback\(\)<a name="gac88b6972227ec2ba65feeb15c31aea83"></a>

```
virtual OHOS::Media::CameraDeviceCallback::~CameraDeviceCallback ()
```

**Description:**

A destructor used to delete the  **[CameraDeviceCallback](OHOS-Media-CameraDeviceCallback.md)**  instance.

一键复制编辑原始数据按行查看历史

提交于 2020-09-08 10:08 . add OpenHarmony 1.0 baseline

MuiltiMedia_CameraDeviceCallback

Overview

Defines the CameraDeviceCallback class to response to device changes.

Since:

1.0

Version:

1.0

Summary

Files

File Name	Description
camera_device_callback.h	Declares functions in the CameraDeviceCallback class to response to device changes.

Data Structures

Data Structure Name	Description
OHOS::Media::CameraDeviceCallback	Provides functions to response to device changes.

Functions

Function Name

Description

OHOS::Media::CameraDeviceCallback::CameraDeviceCallback ()=default

A constructor used to create a CameraDeviceCallback instance.

OHOS::Media::CameraDeviceCallback::~CameraDeviceCallback ()=default

virtual

A destructor used to delete the CameraDeviceCallback instance.

OHOS::Media::CameraDeviceCallback::OnCameraStatus (std::string cameraId, int32_t status)

virtual void

Called when the camera state changes.

Details

Function Documentation

CameraDeviceCallback()

OHOS::Media::CameraDeviceCallback::CameraDeviceCallback ()

Description:

A constructor used to create a CameraDeviceCallback instance.

OnCameraStatus()

virtual void OHOS::Media::CameraDeviceCallback::OnCameraStatus (std::string cameraId, int32_t status )

Description:

Called when the camera state changes.

Parameters:

Name	Description
cameraId	Indicates the camera ID.
status	Indicates the camera state.

~CameraDeviceCallback()

virtual OHOS::Media::CameraDeviceCallback::~CameraDeviceCallback ()

Description:

A destructor used to delete the CameraDeviceCallback instance.

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