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提交 df29112c 编写于 作者: Z zengyawen
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update docs 

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>
上级 c33588e0
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en/application-dev/reference/apis/js-apis-audio.md
浏览文件 @ df29112c
...@@ -434,18 +434,6 @@ Enumerates the interrupt types. ...@@ -434,18 +434,6 @@ Enumerates the interrupt types.
| INTERRUPT_TYPE_BEGIN | 1 | Audio playback interruption started. | | INTERRUPT_TYPE_BEGIN | 1 | Audio playback interruption started. |
| INTERRUPT_TYPE_END | 2 | Audio playback interruption ended. | | INTERRUPT_TYPE_END | 2 | Audio playback interruption ended. |
## InterruptForceType<sup>9+</sup>
Enumerates the interrupt force types.
**System capability:** SystemCapability.Multimedia.Audio.Renderer
| Name | Default Value | Description |
| :-------------- | :------------ | :----------------------------------------- |
| INTERRUPT_FORCE | 0 | Forced action taken by system. |
| INTERRUPT_SHARE | 1 | App can choose to take action or ignore. |
## InterruptHint ## InterruptHint
Enumerates the interrupt hints. Enumerates the interrupt hints.
...@@ -542,20 +530,6 @@ Describes audio capturer configuration options. ...@@ -542,20 +530,6 @@ Describes audio capturer configuration options.
| streamInfo | [AudioStreamInfo](#audiostreaminfo8) | Yes | Stream information. | | streamInfo | [AudioStreamInfo](#audiostreaminfo8) | Yes | Stream information. |
| capturerInfo | [AudioCapturerInfo](#audiocapturerinfo8) | Yes | Capturer information. | | capturerInfo | [AudioCapturerInfo](#audiocapturerinfo8) | Yes | Capturer information. |
## InterruptEvent<sup>9+</sup>
Describes the interrupt event received by the app when playback is interrupted.
**System capability:** SystemCapability.Multimedia.Audio.Renderer
**Parameters:**
| Name | Type | Mandatory | Description |
| :-------- | :-------------------------------------------- | :-------- | :---------------------------------------------------------------- |
| eventType | [InterruptType](#interrupttype) | Yes | Whether the interruption has started or finished. |
| forceType | [InterruptForceType](#interruptforcetype9) | Yes | Whether the action is taken by system or to be taken by the app. |
| hintType | [InterruptHint](#interrupthint) | Yes | Type of action. |
## AudioInterrupt ## AudioInterrupt
The parameters passed in by the audio listener event. The parameters passed in by the audio listener event.
...@@ -2560,52 +2534,6 @@ audioRenderer.getRenderRate().then((renderRate) => { ...@@ -2560,52 +2534,6 @@ audioRenderer.getRenderRate().then((renderRate) => {
}); });
``` ```
### on('interrupt')<sup>9+</sup>
on(type: 'interrupt', callback: Callback\<InterruptEvent>): void
Subscribes to audio interrupt events. This API uses a callback to get interrupt events. The interrupt event is triggered when audio rendering is interrupted.
**System capability:** SystemCapability.Multimedia.Audio.Renderer
**Parameters:**
| Name | Type | Mandatory | Description |
| :------- | :-------------------------------------------- | :-------- | :---------------------------------------------- |
| type | string | Yes | Type of the playback event to subscribe to. |
| callback | Callback<[InterruptEvent](#interruptevent9)\> | Yes | Callback used to listen for interrupt callback. |
**Example:**
```
audioRenderer.on('interrupt', (interruptEvent) => {
if (interruptEvent.forceType == audio.InterruptForceType.INTERRUPT_FORCE) {
switch (interruptEvent.hintType) {
case audio.InterruptHint.INTERRUPT_HINT_PAUSE:
console.log('Force paused. Stop writing');
isPlay = false;
break;
case audio.InterruptHint.INTERRUPT_HINT_STOP:
console.log('Force stopped. Stop writing');
isPlay = false;
break;
}
} else if (interruptEvent.forceType == audio.InterruptForceType.INTERRUPT_SHARE) {
switch (interruptEvent.hintType) {
case audio.InterruptHint.INTERRUPT_HINT_RESUME:
console.log('Resume force paused renderer or ignore');
startRenderer();
break;
case audio.InterruptHint.INTERRUPT_HINT_PAUSE:
console.log('Choose to pause or ignore');
pauseRenderer();
break;
}
}
});
```
### on('markReach')<sup>8+</sup> ### on('markReach')<sup>8+</sup>
on(type: 'markReach', frame: number, callback: (position: number) => {}): void on(type: 'markReach', frame: number, callback: (position: number) => {}): void
......
en/application-dev/reference/apis/js-apis-camera.md 已删除 100644 → 0
浏览文件 @ c33588e0
# Camera<a name="EN-US_TOPIC_0000001149807881"></a>
> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## Modules to Import
```
import camera from '@ohos.multimedia.camera';
```
## Required Permissions
```
ohos.permission.CAMERA
```
## getCameraManager(context: Context, callback: AsyncCallback<CameraManager\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets a **CameraManager** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|-------------------------------|-----------|-----------------------------------------------------|
| context | Context | Yes | Application context |
| callback | AsyncCallback<CameraManager\> | Yes | Callback used to return the CameraManager instance |
**Example**
```
camera.getCameraManager(context, (err, cameraManager) => {
if (err) {
console.error('Failed to get the CameraManager instance ${err.message}');
return;
}
console.log('Callback returned with the CameraManager instance');
});
```
## getCameraManager(context: Context): Promise<CameraManager\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets a **CameraManager** instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------|
| context | Context | Yes | Application context |
**Return values**
| Type | Description |
|-------------------------|--------------------------------------------------------|
| Promise<CameraManager\> | Promise used to return the **CameraManager** instance |
**Example**
```
camera.getCameraManager(context).then((cameraManger) => {
console.log('Promise returned with the CameraManager instance.');
})
```
## CameraStatus<a name="section_camera_status"></a>
Enumerates camera status types.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default Value | Description |
|---------------------------|---------------|--------------------|
| CAMERA_STATUS_APPEAR | 0 | Camera appear |
| CAMERA_STATUS_DISAPPEAR | 1 | Camera disappear |
| CAMERA_STATUS_AVAILABLE | 2 | Camera available |
| CAMERA_STATUS_UNAVAILABLE | 3 | Camera unavailable |
## CameraPosition<a name="section_camera_position"></a>
Enumerates the camera positions.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|-----------------------------|---------------|-----------------------|
| CAMERA_POSITION_UNSPECIFIED | 0 | Unspecified position |
| CAMERA_POSITION_BACK | 1 | Rear camera |
| CAMERA_POSITION_FRONT | 2 | Front camera |
## CameraType<a name="section_camera_type"></a>
Enumerates the camera types.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|-------------------------|---------------|-------------------------|
| CAMERA_TYPE_UNSPECIFIED | 0 | Unspecified camera type |
| CAMERA_TYPE_WIDE_ANGLE | 1 | Wide camera |
| CAMERA_TYPE_ULTRA_WIDE | 2 | Ultra wide camera |
| CAMERA_TYPE_TELEPHOTO | 3 | Telephoto camera |
| CAMERA_TYPE_TRUE_DEPTH | 4 | True depth camera |
## ConnectionType<a name="section_ConnectionType"></a>
Enumerates camera connection types.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|------------------------------|---------------|----------------------------|
| CAMERA_CONNECTION_BUILT_IN | 0 | Built-in camera |
| CAMERA_CONNECTION_USB_PLUGIN | 1 | Camera connected using USB |
| CAMERA_CONNECTION_REMOTE | 2 | Remote camera |
## CameraManager<a name="section_CameraManager"></a>
Implements camera management, including getting supported cameras and creating **CameraInput** instances.
### getCameras(callback: AsyncCallback<Array<Camera\>\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets all cameras supported by the device. This method uses an asynchronous callback to return the array of supported cameras.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|--------------------------------|-----------|---------------------------------------------------------|
| callback | AsyncCallback<Array<Camera\>\> | Yes | Callback used to return the array of supported cameras. |
**Example**
```
cameraManager.getCameras((err, cameras) => {
if (err) {
console.error('Failed to get the cameras. ${err.message}');
return;
}
console.log('Callback returned with an array of supported cameras: ' + cameras.length);
})
```
### getCameras(): Promise<Array<Camera\>\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets all cameras supported by the device. This method uses a promise to return the array of supported cameras.
**Return values**
| Type | Description |
|------------------------|--------------------------------------------------------|
| Promise<Array<Camera\>\> | Promise used to return an array of supported cameras |
**Example**
```
cameraManager.getCameras().then((cameraArray) => {
console.log('Promise returned with an array of supported cameras: ' + cameraArray.length);
})
```
### createCameraInput(cameraId: string, callback: AsyncCallback<CameraInput\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CameraInput** instance with the specified camera ID. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Default value | Mandatory | Description |
|----------|------------------------------|-----------|--------------------------------------------------|
| cameraId | string | Yes | Camera ID used to create the instance |
| callback | AsyncCallback<CameraInput\> | Yes | Callback used to return the CameraInput instance |
**Example**
```
cameraManager.createCameraInput(cameraId, (err, cameraInput) => {
if (err) {
console.error('Failed to create the CameraInput instance. ${err.message}');
return;
}
console.log('Callback returned with the CameraInput instance.');
})
```
### createCameraInput(cameraId: string): Promise<CameraInput\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CameraInput** instance with the specified camera ID. This method uses a promise to return the instance.
**Parameters**
| Name | Default value | Mandatory | Description |
|----------|-----------------------------|-----------|------------------------------------------|
| cameraId | string | Yes | Camera ID used to create the instance |
**Return values**
| Type | Description |
|-------------------------|-------------------------------------------------|
| Promise<CameraInput\> | Promise used to return the CameraInput instance |
**Example**
```
cameraManager.createCameraInput(cameraId).then((cameraInput) => {
console.log('Promise returned with the CameraInput instance');
})
```
### createCameraInput(position: CameraPosition, type: CameraType, callback: AsyncCallback<CameraInput\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CameraInput** instance with the specified camera position and camera type. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|-----------------------------|-----------|---------------------------------------------------|
| position | CameraPosition | Yes | Camera position |
| type | CameraType | Yes | Camera type |
| callback | AsyncCallback<CameraInput\> | Yes | Callback used to return the CameraInput instance |
**Example**
```
cameraManager.createCameraInput(cameraPosition, cameraType, (err, cameraInput) => {
if (err) {
console.error('Failed to create the CameraInput instance. ${err.message}');
return;
}
console.log('Callback returned with the CameraInput instance');
})
```
### createCameraInput(position: CameraPosition, type: CameraType): Promise<CameraInput\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CameraInput** instance with the specified camera position and camera type. This method uses a promise to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------------|-----------|----------------------------------------|
| position | CameraPosition | Yes | Camera position |
| type | CameraType | Yes | Camera type |
**Return values**
| Type | Description |
|-------------------------|-------------------------------------------------|
| Promise<CameraInput\> | Promise used to return the CameraInput instance |
**Example**
```
cameraManager.createCameraInput(cameraPosition, cameraType).then((cameraInput) => {
console.log('Promise returned with the CameraInput instance.');
})
```
### on(type: 'cameraStatus', callback: Callback<CameraStatusInfo\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for camera status changes. This method uses a callback to get camera status changes.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :--------------------------------------------------- |
| type | string | Yes | Camera status event. |
| callback | Callback<CameraStatusInfo\> | Yes | Callback used to get the camera status change. |
**Example**
```
cameraManager.on('cameraStatus', (cameraStatusInfo) => {
console.log('camera : ' + cameraStatusInfo.camera.cameraId);
console.log('status: ' + cameraStatusInfo.status);
})
```
## Camera<a name="section_Camera"></a>
when we call *cameraManager.getCameras()* API, then it will return the **Camera** class which will have all camera-related metadata such as *cameraId, cameraPosition, cameraType & connectionType*.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Fields**
| Name | Type | Access | Description |
|----------------|----------------|----------|------------------------|
| cameraId | string | readonly | Camera ID |
| cameraPosition | cameraPosition | readonly | Camera position |
| cameraType | cameraType | readonly | Camera type |
| connectionType | connectionType | readonly | Camera connection type |
```
async function getCameraInfo() {
var cameraManager = await camera.getCameraManager();
var cameras = await cameraManager.getCameras();
var cameraObj = cameras[0];
var cameraId = cameraObj.cameraId;
var cameraPosition = cameraObj.cameraPosition;
var cameraType = cameraObj.cameraType;
var cameraId = cameraObj.connectionType;
}
```
## CameraStatusInfo<a name="section_Camera"></a>
This interface is a CameraManager callback API return. **CameraStatusInfo** will have *Camera* class & *CameraStatus* predefine constants.From *Camera* class, we can have all camera-related metadata & from *CameraStatus* constants, we will have information such as *APPEAR, DISAPPEAR, AVAILABLE & UNAVAILABLE*.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Fields**
| Name | Type | Description |
|----------------|----------------|------------------|
| camera | Camera | Camera object |
| status | CameraStatus | Camera status |
## CameraInput<a name="section_CameraInput"></a>
Implements a **CameraInput** instance.
### getCameraId(callback: AsyncCallback<string\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the camera ID based on which this **CameraInput** instance is created. This method uses an asynchronous callback to return the camera ID.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|------------------------|-----------|---------------------------------------|
| callback | AsyncCallback<string\> | Yes | Callback used to return the camera ID |
```
cameraInput.getCameraId((err, cameraId) => {
if (err) {
console.error('Failed to get the camera ID. ${err.message}');
return;
}
console.log('Callback returned with the camera ID: ' + cameraId);
})
```
### getCameraId(): Promise<string\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the camera ID based on which this **CameraInput** instance is created. This method uses a promise to return the camera ID.
**Return values**
| Type | Description |
|------------------------|--------------------------------------|
| Promise<string\> | Promise used to return the camera ID |
**Example**
```
cameraInput.getCameraId().then((cameraId) => {
console.log('Promise returned with the camera ID:' + cameraId);
})
```
### hasFlash(callback: AsyncCallback<boolean\>): void; <a name="sec_hasFlash"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether the device has flash light. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|-------------------------|-----------|----------------------------------------------------|
| callback | AsyncCallback<boolean\> | Yes | Callback used to return the flash light support status |
**Example**
```
cameraInput.hasFlash((err, status) => {
if (err) {
console.error('Failed to check whether the device has flash light. ${err.message}');
return;
}
console.log('Callback returned with flash light support status: ' + status);
})
```
### hasFlash(): Promise<boolean\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether the device has flash light. This method uses a promise to return the result.
**Return values**
| Type | Description |
|-----------------------|--------------------------------------------------------|
| Promise<boolean\> | Promise used to return the flash light support status |
**Example**
```
cameraInput.hasFlash().then((status) => {
console.log('Promise returned with the flash light support status:' + status);
})
```
### isFlashModeSupported(flashMode: FlashMode, callback: AsyncCallback<boolean\>): void; <a name="sec_isFlashModeSupported"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether a specified flash mode is supported. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|----------------------------------------------------|
| flashMode | <a href="#sec_FlashMode">FlashMode</a> | Yes | Flash mode |
| callback | AsyncCallback<boolean\> | Yes | Callback used to return the device flash support status |
**Example**
```
cameraInput.isFlashModeSupported(flashMode, (err, status) => {
if (err) {
console.error('Failed to check whether the flash mode is supported. ${err.message}');
return;
}
console.log('Callback returned with the flash mode support status: ' + status);
})
```
### isFlashModeSupported(flashMode: FlashMode): Promise<boolean\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether a specified flash mode is supported. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|----------------------------------------------------|
| flashMode | <a href="#sec_FlashMode">FlashMode</a> | Yes | Flash mode |
**Return values**
| Type | Description |
|-----------------------|---------------------------------------------------|
| Promise<boolean\> | Promise used to return flash mode support status. |
**Example**
```
cameraInput.isFlashModeSupported(flashMode).then((status) => {
console.log('Promise returned with flash mode support status.' + status);
})
```
### setFlashMode(flashMode: FlashMode, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets flash mode. This method uses an asynchronous callback to return the result.
Note: Before setting the flash mode, check the support for the flash light (<a href="#sec_hasFlash">hasFlash</a> method) and flash mode support (<a href="#sec_isFlashModeSupported">isFlashModeSupported</a> method);
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|----------------------------------------------------|
| flashMode | <a href="#sec_FlashMode">FlashMode</a> | Yes | Flash mode |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
cameraInput.setFlashMode(flashMode, (err) => {
if (err) {
console.error('Failed to set the flash mode ${err.message}');
return;
}
console.log('Callback returned with the successful execution of setFlashMode.');
})
```
### setFlashMode(flashMode: FlashMode): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets flash mode. This method uses a promise to return the result.
Note: Before setting the flash mode, check the support for the flash light (<a href="#sec_hasFlash">hasFlash</a> method) and flash mode support (<a href="#sec_isFlashModeSupported">isFlashModeSupported</a> method);
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|----------------------------------------------------|
| flashMode | <a href="#sec_FlashMode">FlashMode</a> | Yes | Flash mode |
**Return values**
| Type | Description |
|-----------------------|-----------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
cameraInput.setFlashMode(flashMode).then(() => {
console.log('Promise returned with the successful execution of setFlashMode.');
})
```
### getFlashMode(callback: AsyncCallback<FlashMode\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets current flash mode. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|---------------------------|-----------|------------------------------------------------|
| callback | AsyncCallback<FlashMode\> | Yes | Callback used to return the current flash mode |
**Example**
```
cameraInput.getFlashMode((err, flashMode) => {
if (err) {
console.error('Failed to get the flash mode ${err.message}');
return;
}
console.log('Callback returned with current flash mode: ' + flashMode);
})
```
### getFlashMode(): Promise<FlashMode\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets current flash mode. This method uses a promise to return the result.
**Return values**
| Type | Description |
|-----------------------|---------------------------------------------------|
| Promise<FlashMode\> | Promise used to return the flash mode |
**Example**
```
cameraInput.getFlashMode().then((flashMode) => {
console.log('Promise returned with current flash mode : ' + flashMode);
})
```
### isFocusModeSupported(afMode: FocusMode, callback: AsyncCallback<boolean\>): void; <a name="sec_isFocusModeSupported"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether a specified focus mode is supported. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|----------------------------------------------------|
| afMode | <a href="#sec_FocusMode">FocusMode</a> | Yes | Focus mode |
| callback | AsyncCallback<boolean\> | Yes | Callback used to return the device focus support status |
**Example**
```
cameraInput.isFocusModeSupported(afMode, (err, status) => {
if (err) {
console.error('Failed to check whether the focus mode is supported. ${err.message}');
return;
}
console.log('Callback returned with the focus mode support status: ' + status);
})
```
### isFocusModeSupported(afMode: FocusMode): Promise<boolean\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Checks whether a specified focus mode is supported. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|----------------------------------------|-----------|-------------|
| afMode | <a href="#sec_FocusMode">FocusMode</a> | Yes | Focus mode |
**Return values**
| Type | Description |
|-----------------------|---------------------------------------------------|
| Promise<boolean\> | Promise used to return the focus mode support status. |
**Example**
```
cameraInput.isFocusModeSupported(afMode).then((status) => {
console.log('Promise returned with focus mode support status.' + status);
})
```
### setFocusMode(afMode: FocusMode, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets focus mode. This method uses an asynchronous callback to return the result.
Note: Before setting the focus mode, check focus mode support (<a href="#sec_isFocusModeSupported">isFocusModeSupported</a> method);
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|------------------------------------|
| afMode | <a href="#sec_FocusMode">FocusMode</a> | Yes | Focus mode |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
cameraInput.setFocusMode(afMode, (err) => {
if (err) {
console.error('Failed to set the focus mode ${err.message}');
return;
}
console.log('Callback returned with the successful execution of setFocusMode.');
})
```
### setFocusMode(afMode: FocusMode): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets focus mode. This method uses a promise to return the result.
Note: Before setting the focus mode, check focus mode support (<a href="#sec_isFocusModeSupported">isFocusModeSupported</a> method);
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|-----------------------------------------|-----------|-------------|
| afMode | <a href="#sec_FocusMode">FocusMode</a> | Yes | Focus mode |
**Return values**
| Type | Description |
|-----------------------|-----------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
cameraInput.setFocusMode(afMode).then(() => {
console.log('Promise returned with the successful execution of setFocusMode.');
})
```
### getFocusMode(callback: AsyncCallback<FocusMode\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the current focus mode. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|---------------------------|-----------|------------------------------------------------|
| callback | AsyncCallback<FocusMode\> | Yes | Callback used to return the current focus mode |
**Example**
```
cameraInput.getFocusMode((err, afMode) => {
if (err) {
console.error('Failed to get the focus mode ${err.message}');
return;
}
console.log('Callback returned with current focus mode: ' + afMode);
})
```
### getFocusMode(): Promise<FocusMode\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the current focus mode. This method uses a promise to return the result.
**Return values**
| Type | Description |
|-----------------------|---------------------------------------------------|
| Promise<FocusMode\> | Promise used to return the focus mode |
**Example**
```
cameraInput.getFocusMode().then((afMode) => {
console.log('Promise returned with current focus mode : ' + afMode);
})
```
### getZoomRatioRange\(callback: AsyncCallback<Array<number\>\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the zoom ratios of all zoom values. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|--------------------------------|-----------|-------------------------------------------------|
| callback | AsyncCallback<Array<number\>\> | Yes | Callback used to return the zoom ratio range |
**Example**
```
cameraInput.getZoomRatioRange((err, zoomRatioRange) => {
if (err) {
console.error('Failed to get the zoom ratio range. ${err.message}');
return;
}
console.log('Callback returned with zoom ratio range: ' + zoomRatioRange.length);
})
```
### getZoomRatioRange\(\): Promise<Array<number\>\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets the zoom ratios of all zoom values. This method uses a promise to return the result.
**Return values**
| Type | Description |
|------------------------|---------------------------------------------|
| Promise<Array<number\>\> | Promise used to return the zoom ratio range |
**Example**
```
cameraInput.getZoomRatioRange().then((zoomRatioRange) => {
console.log('Promise returned with zoom ratio range: ' + zoomRatioRange.length);
})
```
### setZoomRatio(zoomRatio: number, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets a zoom ratio. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|------------------------|-----------|------------------------------------|
| zoomRatio | number | Yes | Zoom ratio |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
cameraInput.setZoomRatio(zoomRatio, (err) => {
if (err) {
console.error('Failed to set the zoom ratio value ${err.message}');
return;
}
console.log('Callback returned with the successful execution of setZoomRatio.');
})
```
### setZoomRatio(zoomRatio: number): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Sets a zoom ratio. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|----------|-----------|-------------|
| zoomRatio | number | Yes | zoom ratio |
**Return values**
| Type | Description |
|-----------------------|-----------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
cameraInput.setZoomRatio(zoomRatio).then(() => {
console.log('Promise returned with the successful execution of setZoomRatio.');
})
```
### getZoomRatio(callback: AsyncCallback<number\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets current zoom ratio value. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-----------|---------------------------|-----------|------------------------------------------------------|
| callback | AsyncCallback<number\> | Yes | Callback used to return the current zoom ratio value |
**Example**
```
cameraInput.getZoomRatio((err, zoomRatio) => {
if (err) {
console.error('Failed to get the zoom ratio ${err.message}');
return;
}
console.log('Callback returned with current zoom ratio: ' + zoomRatio);
})
```
### getZoomRatio(): Promise<number\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Gets current zoom ratio value. This method uses a promise to return the result.
**Return values**
| Type | Description |
|-----------------------|---------------------------------------------------|
| Promise<number\> | Promise used to return the zoom ratio vaule |
**Example**
```
cameraInput.getZoomRatio().then((zoomRatio) => {
console.log('Promise returned with current zoom ratio : ' + zoomRatio);
})
```
### release\(callback: AsyncCallback<void\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **CameraInput** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
cameraInput.release((err) => {
if (err) {
console.error('Failed to release the CameraInput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the CameraInput instance is released successfully.');
});
```
### release(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **CameraInput** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
cameraInput.release().then(() => {
console.log('Promise returned to indicate that the CameraInput instance is released successfully.');
})
```
### on(type: 'focusStateChange', callback: Callback<FocusState\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for focus state changes. This method uses a callback to get focus state changes.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<FocusState\> | Yes | Callback used to get the focus state change. |
**Example**
```
cameraInput.on('focusStateChange', (focusState) => {
console.log('Focus state : ' + focusState);
})
```
### on(type: 'error', callback: Callback<CameraInputError\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for **CameraInput** errors. This method uses a callback to get errors.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Camera input error event. |
| callback | Callback<CameraInputError\> | Yes | Callback used to get the camera input errors. |
**Example**
```
cameraInput.on('error', (cameraInputError) => {
console.log('Camera input error code: ' + cameraInputError.code);
})
```
## FlashMode <a name="sec_FlashMode"></a>
Enumerates the flash modes.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|------------------------|---------------|------------------------|
| FLASH_MODE_CLOSE | 0 | Flash mode close |
| FLASH_MODE_OPEN | 1 | Flash mode open |
| FLASH_MODE_AUTO | 2 | Flash mode auto |
| FLASH_MODE_ALWAYS_OPEN | 3 | Flash mode always open |
## FocusMode <a name="sec_FocusMode"></a>
Enumerates the focus modes.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|----------------------------|---------------|----------------------------|
| FOCUS_MODE_MANUAL | 0 | Focus mode manual |
| FOCUS_MODE_CONTINUOUS_AUTO | 1 | Focus mode continuous auto |
| FOCUS_MODE_AUTO | 2 | Focus mode auto |
| FOCUS_MODE_LOCKED | 3 | Focus mode locked |
## createCaptureSession\(context: Context, callback: AsyncCallback<CaptureSession\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CaptureSession** instance. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|--------------------------------|-----------|-----------------------------------------------------|
| context | Context | Yes | Application context |
| callback | AsyncCallback<CaptureSession\> | Yes | Callback used to return the CaptureSession instance |
**Example**
```
captureSession.createCaptureSession((context), (err, captureSession) => {
if (err) {
console.error('Failed to create the CaptureSession instance. ${err.message}');
return;
}
console.log('Callback returned with the CaptureSession instance.' + captureSession);
});
```
## createCaptureSession(context: Context\): Promise<CaptureSession\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **CaptureSession** instance. This method uses a promise to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|-------------------------------|-----------|-----------------------------------------------------|
| context | Context | Yes | Application context |
**Return values**
| Type | Description |
|---------------------------|---------------------------------------------------|
| Promise<CaptureSession\> | Promise used to return the CaptureSession instance. |
**Example**
```
captureSession.createCaptureSession(context).then((captureSession) => {
console.log('Promise returned with the CaptureSession instance');
})
```
## CaptureSession<a name="sec_CaptureSession"></a>
Implements session capture.
### beginConfig\(callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts configuration for this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.beginConfig((err) => {
if (err) {
console.error('Failed to start the configuration. ${err.message}');
return;
}
console.log('Callback invoked to indicate the begin config success.');
});
```
### beginConfig\(\): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts configuration for this CaptureSession instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|---------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.beginConfig().then(() => {
console.log('Promise returned to indicate the begin config success.');
})
```
### commitConfig\(callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Commits the configuration for this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|---------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.commitConfig((err) => {
if (err) {
console.error('Failed to commit the configuration. ${err.message}');
return;
}
console.log('Callback invoked to indicate the commit config success.');
});
```
### commitConfig\(\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Commits the configuration for this CaptureSession instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|---------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.commitConfig().then(() => {
console.log('Promise returned to indicate the commit config success.');
})
```
### addInput\(cameraInput: CameraInput, callback: AsyncCallback<void\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a CameraInput instance to this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-------------|----------------------|-----------|---------------------------------------------|
| cameraInput | CameraInput | Yes | CameraInput instance to add |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.addInput(cameraInput, (err) => {
if (err) {
console.error('Failed to add the CameraInput instance. ${err.message}');
return;
}
console.log('Callback invoked to indicate that the CameraInput instance is added.');
});
```
### addInput\(cameraInput: CameraInput\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a CameraInput instance to this CaptureSession instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-------------|---------------------|-----------|-------------------------------|
| cameraInput | CameraInput | Yes | CameraInput instance to add |
**Return values**
| Type | Description |
|----------------|------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.addInput(cameraInput).then(() => {
console.log('Promise used to indicate that the CameraInput instance is added.');
})
```
### addOutput\(previewOutput: PreviewOutput, callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a PreviewOutput instance to this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|----------------------|-----------|-------------------------------------|
| previewOutput | PreviewOutput | Yes | PreviewOutput instance to add |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.addOutput(previewOutput, (err) => {
if (err) {
console.error('Failed to add the PreviewOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PreviewOutput instance is added.');
});
```
### addOutput\(previewOutput: PreviewOutput\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a PreviewOutput instance to this CaptureSession instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|--------------------------------|
| previewOutput | PreviewOutput | Yes | PreviewOutput instance to add |
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.addOutput(previewOutput).then(() => {
console.log('Promise used to indicate that the PreviewOutput instance is added.');
})
```
### addOutput\(photoOutput: PhotoOutput, callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a PhotoOutput instance to this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|-------------------------------------|
| photoOutput | PhotoOutput | Yes | PhotoOutput instance to add |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.addOutput(photoOutput, (err) => {
if (err) {
console.error('Failed to add the PhotoOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PhotoOutput instance is added.');
});
```
### addOutput\(photoOutput: PhotoOutput\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a PhotoOutput instance to this CaptureSession instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|--------------------------------|
| photoOutput | PhotoOutput | Yes | PhotoOutput instance to add |
**Return values**
| Type | Description |
|---------------|-----------------------------------|
| Promise<void> | Promise used to return the result |
**Example**
```
captureSession.addOutput(photoOutput).then(() => {
console.log('Promise used to indicate that the PhotoOutput instance is added.');
})
```
### addOutput\(videoOutput: VideoOutput, callback: AsyncCallback<void\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a VideoOutput instance to this CaptureSession instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|-------------------------------------|
| videoOutput | VideoOutput | Yes | VideoOutput instance to add |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.addOutput(videoOutput, (err) => {
if (err) {
console.error('Failed to add the VideoOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the VideoOutput instance is added.');
});
```
### addOutput\(videoOutput: VideoOutput\): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Add a VideoOutput instance to this CaptureSession instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|--------------------------------|
| videoOutput | VideoOutput | Yes | VideoOutput instance to add |
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.addOutput(videoOutput).then(() => {
console.log('Promise used to indicate that the VideoOutput instance is added.');
})
```
### removeInput\(cameraInput: CameraInput, callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **CameraInput** instance from this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-------------|----------------------|-----------|------------------------------------|
| cameraInput | CameraInput | Yes | CameraInput instance to remove |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.removeInput(cameraInput, (err) => {
if (err) {
console.error('Failed to remove the CameraInput instance. ${err.message}');
return;
}
console.log('Callback invoked to indicate that the cameraInput instance is removed.');
});
```
### removeInput\(cameraInput: CameraInput\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **CameraInput** instance from this **CaptureSession** instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|-------------|---------------------|-----------|---------------------------------|
| cameraInput | CameraInput | Yes | CameraInput instance to remove |
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.removeInput(cameraInput).then(() => {
console.log('Promise returned to indicate that the cameraInput instance is removed.');
})
```
### removeOutput\(previewOutput: PreviewOutput, callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **PreviewOutput** instance from this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|----------------------|-----------|------------------------------------|
| previewOutput | PreviewOutput | Yes | PreviewOutput instance to remove |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.removeOutput(previewOutput, (err) => {
if (err) {
console.error('Failed to remove the PreviewOutput instance. ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PreviewOutput instance is removed.');
});
```
### removeOutput(previewOutput: PreviewOutput): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **PreviewOutput** instance from this **CaptureSession** instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|-----------------------------------|
| previewOutput | PreviewOutput | Yes | PreviewOutput instance to remove |
**Return values**
| Type | Description |
|---------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.removeOutput(previewOutput).then(() => {
console.log('Promise returned to indicate that the PreviewOutput instance is removed.');
})
```
### removeOutput(photoOutput: PhotoOutput, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **PhotoOutput** instance from this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|----------------------|-----------|------------------------------------|
| photoOutput | PhotoOutput | Yes | PhotoOutput instance to remove |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.removeOutput(photoOutput, (err) => {
if (err) {
console.error('Failed to remove the PhotoOutput instance. ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PhotoOutput instance is removed.');
});
```
### removeOutput(photoOutput: PhotoOutput): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **PhotoOutput** instance from this **CaptureSession** instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|---------------------------------|
| photoOutput | PhotoOutput | Yes | PhotoOutput instance to remove |
**Return values**
| Type | Description |
|---------------|------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.removeOutput(photoOutput).then(() => {
console.log('Promise returned to indicate that the PhotoOutput instance is removed.');
})
```
### removeOutput(videoOutput: VideoOutput, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **VideoOutput** instance from this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|----------------------|-----------|------------------------------------|
| videoOutput | VideoOutput | Yes | VideoOutput instance to remove |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.removeOutput(videoOutput, (err) => {
if (err) {
console.error('Failed to remove the VideoOutput instance. ${err.message}');
return;
}
console.log('Callback invoked to indicate that the VideoOutput instance is removed.');
});
```
### removeOutput(videoOutput: VideoOutput): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Removes a **VideoOutput** instance from this **CaptureSession** instance. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|---------------|---------------------|-----------|---------------------------------|
| videoOutput | VideoOutput | Yes | VideoOutput instance to remove |
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.removeOutput(videoOutput).then(() => {
console.log('Promise returned to indicate that the VideoOutput instance is removed.');
})
```
### start\(callback: AsyncCallback<void\>\): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.start((err) => {
if (err) {
console.error('Failed to start the session ${err.message}');
return;
}
console.log('Callback invoked to indicate the session start success.');
});
```
### start\(\): Promise<void\>;<a name="section189141826104616"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts this **CaptureSession** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.start().then(() => {
console.log('Promise returned to indicate the session start success.');
})
```
### stop\(callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Stops this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.stop((err) => {
if (err) {
console.error('Failed to stop the session ${err.message}');
return;
}
console.log('Callback invoked to indicate the session stop success.');
});
```
### stop(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Stops this **CaptureSession** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.stop().then(() => {
console.log('Promise returned to indicate the session stop success.');
})
```
### release\(callback: AsyncCallback<void\>\): void;<a name="section84581011418"></a>
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **CaptureSession** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
captureSession.release((err) => {
if (err) {
console.error('Failed to release the CaptureSession instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the CaptureSession instance is released successfully.');
});
```
### release(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **CaptureSession** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
captureSession.release().then(() => {
console.log('Promise returned to indicate that the CaptureSession instance is released successfully.');
})
```
### on(type: 'error', callback: Callback<CaptureSessionError\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for **CaptureSession** errors. This method uses a callback to get errors.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Capture session error event. |
| callback | Callback<CaptureSessionError\> | Yes | Callback used to get the capture session errors. |
**Example**
```
captureSession.on('error', (captureSessionError) => {
console.log('Capture session error code: ' + captureSessionError.code);
})
```
## createPreviewOutput(surfaceId: string, callback: AsyncCallback<PreviewOutput\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **PreviewOutput** instance. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-------------------------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from XComponent view |
| callback | AsyncCallback<PreviewOutput\> | Yes | Callback used to return the PreviewOutput instance |
**Example**
```
camera.createPreviewOutput((surfaceId), (err, previewOutput) => {
if (err) {
console.error('Failed to create the PreviewOutput instance. ${err.message}');
return;
}
console.log('Callback returned with previewOutput instance');
});
```
## createPreviewOutput(surfaceId: string): Promise<PreviewOutput>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **PreviewOutput** instance. This method uses a promise to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-----------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from XComponent view |
**Return values**
| Type | Description |
|-------------------------|---------------------------------------------------|
| Promise<PreviewOutput\> | Promise used to return the PreviewOutput instance |
**Example**
```
camera.createPreviewOutput(surfaceId).then((previewOutput) => {
console.log('Promise returned with the PreviewOutput instance');
})
```
## PreviewOutput
Implements preview output.
### release(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **PreviewOutput** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
previewOutput.release((err) => {
if (err) {
console.error('Failed to release the PreviewOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PreviewOutput instance is released successfully.');
});
```
### release(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **PreviewOutput** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|-----------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
previewOutput.release().then(() => {
console.log('Promise returned to indicate that the PreviewOutput instance is released successfully.');
})
```
### on(type: 'frameStart', callback: Callback<number\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for preview frame start events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :---------------- | :-------- | :----------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<void\> | Yes | Callback used to return the result |
**Example**
```
previewOutput.on('frameStart', () => {
console.log('Preview frame started');
})
```
### on(type: 'frameEnd', callback: Callback<number\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for preview frame end event. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :---------------- | :-------- | :----------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<void\> | Yes | Callback used to return the result |
**Example**
```
previewOutput.on('frameEnd', () => {
console.log('Preview frame ended');
})
```
### on(type: 'error', callback: Callback<PreviewOutputError\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for **PreviewOutput** errors. This method uses a callback to get errors.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Preview output error event. |
| callback | Callback<PreviewOutputError\> | Yes | Callback used to get the preview output errors. |
**Example**
```
previewOutput.on('error', (previewOutputError) => {
console.log('Preview output error code: ' + previewOutputError.code);
})
```
## createPhotoOutput(surfaceId: string, callback: AsyncCallback<PhotoOutput\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **PhotoOutput** instance. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-------------------------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from ImageReceiver |
| callback | AsyncCallback<PhotoOutput\> | Yes | Callback used to return the PhotoOutput instance |
**Example**
```
camera.createPhotoOutput((surfaceId), (err, photoOutput) => {
if (err) {
console.error('Failed to create the PhotoOutput instance. ${err.message}');
return;
}
console.log('Callback returned with the PhotoOutput instance.');
});
```
## createPhotoOutput(surfaceId: string): Promise<PhotoOutput\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **PhotoOutput** instance. This method uses a promise to return the PhotoOutput instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-----------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from ImageReceiver |
**Return values**
| Type | Description |
|-------------------------|--------------------------------------------------|
| Promise<PhotoOutput\> | Promise used to return the PhotoOutput instance |
**Example**
```
camera.createPhotoOutput(surfaceId).then((photoOutput) => {
console.log('Promise returned with PhotoOutput instance');
})
```
## ImageRotation
Enumerates the image rotation angles.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default Value | Description |
|--------------|---------------|----------------------------------------|
| ROTATION_0 | 0 | The capture image rotates 0 degrees |
| ROTATION_90 | 90 | The capture image rotates 90 degrees |
| ROTATION_180 | 180 | The capture image rotates 180 degrees |
| ROTATION_270 | 270 | The capture image rotates 270 degrees |
## Location
Defines the location of a captured image.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Type | Access | Description |
|-----------|--------|--------------|-------------|
| latitude | number | read / write | Latitude |
| longitude | number | read / write | Longitude |
## QualityLevel
Enumerates the image quality levels.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Default value | Description |
|----------------------|---------------|----------------------|
| QUALITY_LEVEL_HIGH | 0 | High image quality |
| QUALITY_LEVEL_MEDIUM | 1 | Medium image quality |
| QUALITY_LEVEL_LOW | 2 | Low image quality |
## PhotoCaptureSetting
Defines the settings for image capture.
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
| Name | Type | Mandatory | Description |
|----------|---------------|-----------|---------------------|
| quality | QualityLevel | Optional | Photo image quality |
| rotation | ImageRotation | Optional | Photo rotation |
## PhotoOutput
Implements photo output.
### capture(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Captures a photo. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|---------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
photoOutput.capture((err) => {
if (err) {
console.error('Failed to capture the photo ${err.message}');
return;
}
console.log('Callback invoked to indicate the photo capture request success.');
});
```
### capture(setting: PhotoCaptureSetting, callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Captures a photo with the specified capture settings. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| setting | PhotoCaptureSetting | Yes | Photo capture settings |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
photoOutput.capture(settings, (err) => {
if (err) {
console.error('Failed to capture the photo ${err.message}');
return;
}
console.log('Callback invoked to indicate the photo capture request success.');
});
```
### capture(setting?: PhotoCaptureSetting): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Captures a photo with the specified capture settings. This method uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|---------------------|-----------|----------------------------------------------|
| setting | PhotoCaptureSetting | No | Photo capture settings |
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
photoOutput.capture().then(() => {
console.log('Promise returned to indicate that photo capture request success.');
})
```
### release(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **PhotoOutput** instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
photoOutput.release((err) => {
if (err) {
console.error('Failed to release the PhotoOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the PhotoOutput instance is released successfully.');
});
```
### release(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this **PhotoOutput** instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
photoOutput.release().then(() => {
console.log('Promise returned to indicate that the PhotoOutput instance is released successfully.');
})
```
### on(type: 'captureStart', callback: Callback<number\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for photo capture start events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<number\> | Yes | Callback used to get the capture ID. |
**Example**
```
photoOutput.on('captureStart', (captureId) => {
console.log('photo capture stated, captureId : ' + captureId);
})
```
### on(type: 'frameShutter', callback: Callback<FrameShutterInfo\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for frame shutter events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<FrameShutterInfo\> | Yes | Callback used to get the frame shutter information.|
**Example**
```
photoOutput.on('frameShutter', (frameShutterInfo) => {
console.log('photo capture end, captureId : ' + frameShutterInfo.captureId);
console.log('Timestamp for frame : ' + frameShutterInfo.timestamp);
})
```
### on(type: 'captureEnd', callback: Callback<CaptureEndInfo\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for photo capture end events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :------------------------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<CaptureEndInfo\> | Yes | Callback used to get the capture end information |
**Example**
```
photoOutput.on('captureEnd', (captureEndInfo) => {
console.log('photo capture end, captureId : ' + captureEndInfo.captureId);
console.log('frameCount : ' + captureEndInfo.frameCount);
})
```
### on(type: 'error', callback: Callback<PhotoOutputError\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for **PhotoOutput** errors. This method uses a callback to get errors.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Photo output error event. |
| callback | Callback<PhotoOutputError\> | Yes | Callback used to get the photo output errors. |
**Example**
```
photoOutput.on('error', (photoOutputError) => {
console.log('Photo output error code: ' + photoOutputError.code);
})
```
## createVideoOutput(surfaceId: string, callback: AsyncCallback<VideoOutput\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **VideoOutput** instance. This method uses an asynchronous callback to return the instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-------------------------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from VideoRecorder |
| callback | AsyncCallback<VideoOutput\> | Yes | Callback used to return the VideoOutput instance |
**Example**
```
camera.createVideoOutput((surfaceId), (err, videoOutput) => {
if (err) {
console.error('Failed to create the VideoOutput instance. ${err.message}');
return;
}
console.log('Callback returned with the VideoOutput instance');
});
```
## createVideoOutput(surfaceId: string): Promise<VideoOutput\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Creates a **VideoOutput** instance. This method uses a promise to return the VideoOutput instance.
**Parameters**
| Name | Type | Mandatory | Description |
|------------|-----------------|-----------|----------------------------------------------------|
| surfaceId | string | Yes | Surface ID received from VideoRecorder |
**Return values**
| Type | Description |
|---------------------------------------|-------------------------------------------------|
| Promise<[VideoOutput](#videooutput)\> | Promise used to return the VideoOutput instance |
**Example**
```
camera.createVideoOutput(surfaceId).then((videoOutput) => {
console.log('Promise returned with the VideoOutput instance');
})
```
## VideoOutput
Implements video output.
### start(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts the video output. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
videoOutput.start((err) => {
if (err) {
console.error('Failed to start the video output ${err.message}');
return;
}
console.log('Callback invoked to indicate the video output start success.');
});
```
### start(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Starts the video output. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
videoOutput.start().then(() => {
console.log('Promise returned to indicate that start method execution success.');
})
```
### stop(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Stops the video output. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
videoOutput.stop((err) => {
if (err) {
console.error('Failed to stop the video output ${err.message}');
return;
}
console.log('Callback invoked to indicate the video output stop success.');
});
```
### stop(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Stops the video output. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
videoOutput.start().then(() => {
console.log('Promise returned to indicate that stop method execution success.');
})
```
### release(callback: AsyncCallback<void\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this VideoOutput instance. This method uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory | Description |
|----------|----------------------|-----------|----------------------------------------------|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result |
**Example**
```
videoOutput.release((err) => {
if (err) {
console.error('Failed to release the VideoOutput instance ${err.message}');
return;
}
console.log('Callback invoked to indicate that the VideoOutput instance is released successfully.');
});
```
### release(): Promise<void\>;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Releases this VideoOutput instance. This method uses a promise to return the result.
**Return values**
| Type | Description |
|----------------|---------------------------------------------|
| Promise<void\> | Promise used to return the result |
**Example**
```
videoOutput.release().then(() => {
console.log('Promise returned to indicate that the VideoOutput instance is released successfully.');
})
```
### on(type: 'frameStart', callback: Callback<number\>): void;
**System Capabilities:**
SystemCapability.Multimedia.Camera.Core
**Description**
Listens for video frame start events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :---------------- | :-------- | :----------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<void\> | Yes | Callback used to return the result |
**Example**
```
videoOutput.on('frameStart', () => {
console.log('Video frame started');
})
```
### on(type: 'frameEnd', callback: Callback<number\>): void;
Listens for video frame end events. This method uses a callback to get the event information.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :---------------- | :-------- | :----------------------------------|
| type | string | Yes | Name of the event to listen for. |
| callback | Callback<void\> | Yes | Callback used to return the result |
**Example**
```
videoOutput.on('frameEnd', () => {
console.log('Video frame ended');
})
```
### on(type: 'error', callback: Callback<VideoOutputError\>): void;
Listens for **VideoOutput** errors. This method uses a callback to get errors.
**Parameters**
| Name | Type | Mandatory | Description |
| :------- | :--------------------- | :-------- | :-----------------------------------------------|
| type | string | Yes | Video output error event. |
| callback | Callback<VideoOutputError\> | Yes | Callback used to get the video output errors. |
**Example**
```
videoOutput.on('error', (VideoOutputError) => {
console.log('Video output error code: ' + VideoOutputError.code);
})
```
\ No newline at end of file
en/application-dev/reference/apis/js-apis-media.md
浏览文件 @ df29112c
...@@ -125,73 +125,6 @@ Creates an **AudioRecorder** instance to control audio recording. ...@@ -125,73 +125,6 @@ Creates an **AudioRecorder** instance to control audio recording.
let audiorecorder = media.createAudioRecorder(); let audiorecorder = media.createAudioRecorder();
``` ```
## media.createVideoRecorder<sup>9+</sup>
createVideoRecorder(callback: AsyncCallback\<[VideoRecorder](#videorecorder9)>): void
Creates a **VideoRecorder** instance in asynchronous mode. This API uses a callback to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------------------------------- | ---- | ------------------------------ |
| callback | AsyncCallback<[VideoRecorder](#videorecorder9)> | Yes | Callback used to return the **VideoRecorder** instance created.|
**Example**
```js
let videoRecorder
media.createVideoRecorder((error, video) => {
if (typeof(video) != 'undefined') {
videoRecorder = video;
console.info('video createVideoRecorder success');
} else {
console.info(`video createVideoRecorder fail, error:${error.message}`);
}
});
```
## media.createVideoRecorder<sup>9+</sup>
createVideoRecorder(): Promise<[VideoRecorder](#videorecorder9)>
Creates a **VideoRecorder** instance in asynchronous mode. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| ----------------------------------------- | ----------------------------------- |
| Promise<[VideoRecorder](#videorecorder9)> | Promise used to return the **VideoRecorder** instance created.|
**Example**
```js
let videoRecorder
function failureCallback(error) {
console.info(`video failureCallback, error:${error.message}`);
}
function catchCallback(error) {
console.info(`video catchCallback, error:${error.message}`);
}
await media.createVideoRecorder.then((video) => {
if (typeof(video) != 'undefined') {
videoRecorder = video;
console.info('video createVideoRecorder success');
} else {
console.info('video createVideoRecorder fail');
}
}, failureCallback).catch(catchCallback);
```
## MediaErrorCode<sup>8+</sup> ## MediaErrorCode<sup>8+</sup>
Enumerates the media error codes. Enumerates the media error codes.
...@@ -1836,662 +1769,6 @@ Enumerates the audio output formats. ...@@ -1836,662 +1769,6 @@ Enumerates the audio output formats.
| AMR_WB | 4 | AMR_WB.<br>This API is merely defined in OpenHarmony 3.1 Release and cannot be used currently. It can be used in OpenHarmony 3.1 MR.| | AMR_WB | 4 | AMR_WB.<br>This API is merely defined in OpenHarmony 3.1 Release and cannot be used currently. It can be used in OpenHarmony 3.1 MR.|
| AAC_ADTS | 6 | Audio Data Transport Stream (ADTS), which is a transport stream format of AAC-based audio.| | AAC_ADTS | 6 | Audio Data Transport Stream (ADTS), which is a transport stream format of AAC-based audio.|
## VideoRecorder<sup>9+</sup>
Implements video recording. Before calling an API of the **VideoRecorder** class, you must call [createVideoRecorder()](#mediacreatevideorecorder9) to create a [VideoRecorder](#videorecorder9) instance.
For details about the video recording demo, see [Video Recording Development](../../media/video-recorder.md).
### Attributes
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Type | Readable| Writable| Description |
| ------------------ | -------------------------------------- | ---- | ---- | ---------------- |
| state<sup>8+</sup> | [VideoRecordState](#videorecordstate9) | Yes | No | Video recording state.|
### prepare<sup>9+</sup><a name=videorecorder_prepare1></a>
prepare(config: VideoRecorderConfig, callback: AsyncCallback\<void>): void;
Sets video recording parameters in asynchronous mode. This API uses a callback to return the result.
**Required permissions:** ohos.permission.MICROPHONE and ohos.permission.CAMERA
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------------------------------- | ---- | ----------------------------------- |
| config | [VideoRecorderConfig](#videorecorderconfig9) | Yes | Video recording parameters to set. |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : 'audio/mp4a-latm',
audioSampleRate : 48000,
fileFormat : 'mp4',
videoBitrate : 48000,
videoCodec : 'video/mp4v-es',
videoFrameWidth : 640,
videoFrameHeight : 480,
videoFrameRate : 30
}
let videoConfig = {
audioSourceType : 1,
videoSourceType : 0,
profile : videoProfile,
url : 'fd://xx', // The file must be created by the caller and granted with proper permissions.
orientationHint : 0,
location : { latitude : 30, longitude : 130 },
}
// asyncallback
let videoRecorder = null;
let events = require('events');
let eventEmitter = new events.EventEmitter();
eventEmitter.on('prepare', () => {
videoRecorder.prepare(videoConfig, (err) => {
if (typeof (err) == 'undefined') {
console.info('prepare success');
} else {
console.info('prepare failed and error is ' + err.message);
}
});
});
media.createVideoRecorder((err, recorder) => {
if (typeof (err) == 'undefined' && typeof (recorder) != 'undefined') {
videoRecorder = recorder;
console.info('createVideoRecorder success');
eventEmitter.emit('prepare'); // Trigger the 'prepare' event.
} else {
console.info('createVideoRecorder failed and error is ' + err.message);
}
});
```
### prepare<sup>9+</sup><a name=videorecorder_prepare2></a>
prepare(config: VideoRecorderConfig): Promise\<void>;
Sets video recording parameters in asynchronous mode. This API uses a promise to return the result.
**Required permissions:** ohos.permission.MICROPHONE and ohos.permission.CAMERA
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | -------------------------------------------- | ---- | ------------------------ |
| config | [VideoRecorderConfig](#videorecorderconfig9) | Yes | Video recording parameters to set.|
**Return value**
| Type | Description |
| -------------- | ---------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : 'audio/mp4a-latm',
audioSampleRate : 48000,
fileFormat : 'mp4',
videoBitrate : 48000,
videoCodec : 'video/mp4v-es',
videoFrameWidth : 640,
videoFrameHeight : 480,
videoFrameRate : 30
}
let videoConfig = {
audioSourceType : 1,
videoSourceType : 0,
profile : videoProfile,
url : 'fd://xx', // The file must be created by the caller and granted with proper permissions.
orientationHint : 0,
location : { latitude : 30, longitude : 130 },
}
// promise
let videoRecorder = null;
await media.createVideoRecorder().then((recorder) => {
if (typeof (recorder) != 'undefined') {
videoRecorder = recorder;
console.info('createVideoRecorder success');
} else {
console.info('createVideoRecorder failed');
}
}, (err) => {
console.info('error hanppend message is ' + err.message);
}).catch((err) => {
console.info('catch err error message is ' + err.message);
});
await videoRecorder.prepare(videoConfig).then(() => {
console.info('prepare success');
}, (err) => {
console.info('prepare failed and error is ' + err.message);
}).catch((err) => {
console.info('prepare failed and catch error is ' + err.message);
});
```
### getInputSurface<sup>9+</sup>
getInputSurface(callback: AsyncCallback\<string>): void;
Obtains the surface required for recording in asynchronous mode. This surface is provided for the caller. The caller obtains the **surfaceBuffer** from this surface and fills in the corresponding data.
Note that the video data must carry the timestamp (in ns) and buffer size, and the start time of the timestamp is based on the system startup time.
This API can be called only after [prepare()](#videorecorder_prepare1) is called.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------- | ---- | --------------------------- |
| callback | AsyncCallback\<string> | Yes | Callback used to obtain the result.|
**Example**
```js
// asyncallback
let surfaceID = null; // Surface ID passed to the external system.
videoRecorder.getInputSurface((err, surfaceId) => {
if (typeof (err) == 'undefined') {
console.info('getInputSurface success');
surfaceID = surfaceId;
} else {
console.info('getInputSurface failed and error is ' + err.message);
}
});
```
### getInputSurface<sup>9+</sup>
getInputSurface(): Promise\<string>;
Obtains the surface required for recording in asynchronous mode. This surface is provided for the caller. The caller obtains the **surfaceBuffer** from this surface and fills in the corresponding data.
Note that the video data must carry the timestamp (in ns) and buffer size, and the start time of the timestamp is based on the system startup time.
This API can be called only after [prepare()](#videorecorder_prepare1) is called.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| ---------------- | -------------------------------- |
| Promise\<string> | Promise used to return the result.|
**Example**
```js
// promise
let surfaceID = null; // Surface ID passed to the external system.
await videoRecorder.getInputSurface().then((surfaceId) => {
console.info('getInputSurface success');
surfaceID = surfaceId;
}, (err) => {
console.info('getInputSurface failed and error is ' + err.message);
}).catch((err) => {
console.info('getInputSurface failed and catch error is ' + err.message);
});
```
### start<sup>9+</sup><a name=videorecorder_start1></a>
start(callback: AsyncCallback\<void>): void;
Starts video recording in asynchronous mode. This API uses a callback to return the result.
This API can be called only after [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) are called, because the data source must pass data to the surface first.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.start((err) => {
if (typeof (err) == 'undefined') {
console.info('start videorecorder success');
} else {
console.info('start videorecorder failed and error is ' + err.message);
}
});
```
### start<sup>9+</sup><a name=videorecorder_start2></a>
start(): Promise\<void>;
Starts video recording in asynchronous mode. This API uses a promise to return the result.
This API can be called only after [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) are called, because the data source must pass data to the surface first.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.start().then(() => {
console.info('start videorecorder success');
}, (err) => {
console.info('start videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('start videorecorder failed and catch error is ' + err.message);
});
```
### pause<sup>9+</sup><a name=videorecorder_pause1></a>
pause(callback: AsyncCallback\<void>): void;
Pauses video recording in asynchronous mode. This API uses a callback to return the result.
This API can be called only after [start()](#videorecorder_start1) is called. You can resume recording by calling [resume()](#videorecorder_resume1).
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.pause((err) => {
if (typeof (err) == 'undefined') {
console.info('pause videorecorder success');
} else {
console.info('pause videorecorder failed and error is ' + err.message);
}
});
```
### pause<sup>9+</sup><a name=videorecorder_pause2></a>
pause(): Promise\<void>;
Pauses video recording in asynchronous mode. This API uses a promise to return the result.
This API can be called only after [start()](#videorecorder_start1) is called. You can resume recording by calling [resume()](#videorecorder_resume1).
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.pause().then(() => {
console.info('pause videorecorder success');
}, (err) => {
console.info('pause videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('pause videorecorder failed and catch error is ' + err.message);
});
```
### resume<sup>9+</sup><a name=videorecorder_resume1></a>
resume(callback: AsyncCallback\<void>): void;
Resumes video recording in asynchronous mode. This API uses a callback to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.resume((err) => {
if (typeof (err) == 'undefined') {
console.info('resume videorecorder success');
} else {
console.info('resume videorecorder failed and error is ' + err.message);
}
});
```
### resume<sup>9+</sup><a name=videorecorder_resume2></a>
resume(): Promise\<void>;
Resumes video recording in asynchronous mode. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.resume().then(() => {
console.info('resume videorecorder success');
}, (err) => {
console.info('resume videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('resume videorecorder failed and catch error is ' + err.message);
});
```
### stop<sup>9+</sup><a name=videorecorder_stop1></a>
stop(callback: AsyncCallback\<void>): void;
Stops video recording in asynchronous mode. This API uses a callback to return the result.
To start another recording, you must call [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) again.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.stop((err) => {
if (typeof (err) == 'undefined') {
console.info('stop videorecorder success');
} else {
console.info('stop videorecorder failed and error is ' + err.message);
}
});
```
### stop<sup>9+</sup><a name=videorecorder_stop2></a>
stop(): Promise\<void>;
Stops video recording in asynchronous mode. This API uses a promise to return the result.
To start another recording, you must call [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) again.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.stop().then(() => {
console.info('stop videorecorder success');
}, (err) => {
console.info('stop videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('stop videorecorder failed and catch error is ' + err.message);
});
```
### release<sup>9+</sup><a name=videorecorder_release1></a>
release(callback: AsyncCallback\<void>): void;
Releases the video recording resource in asynchronous mode. This API uses a callback to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | -------------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.release((err) => {
if (typeof (err) == 'undefined') {
console.info('release videorecorder success');
} else {
console.info('release videorecorder failed and error is ' + err.message);
}
});
```
### release<sup>9+</sup><a name=videorecorder_release2></a>
release(): Promise\<void>;
Releases the video recording resource in asynchronous mode. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ----------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.release().then(() => {
console.info('release videorecorder success');
}, (err) => {
console.info('release videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('release videorecorder failed and catch error is ' + err.message);
});
```
### reset<sup>9+</sup><a name=videorecorder_reset1></a>
reset(callback: AsyncCallback\<void>): void;
Resets video recording in asynchronous mode. This API uses a callback to return the result.
To start another recording, you must call [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) again.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------- |
| callback | AsyncCallback\<void> | Yes | Callback used to return the result.|
**Example**
```js
// asyncallback
videoRecorder.reset((err) => {
if (typeof (err) == 'undefined') {
console.info('reset videorecorder success');
} else {
console.info('reset videorecorder failed and error is ' + err.message);
}
});
```
### reset<sup>9+</sup><a name=videorecorder_reset2></a>
reset(): Promise\<void>;
Resets video recording in asynchronous mode. This API uses a promise to return the result.
To start another recording, you must call [prepare()](#videorecorder_prepare1) and [getInputSurface()](#getinputsurface8) again.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Return value**
| Type | Description |
| -------------- | ------------------------------------- |
| Promise\<void> | Promise used to return the result.|
**Example**
```js
// promise
await videoRecorder.reset().then(() => {
console.info('reset videorecorder success');
}, (err) => {
console.info('reset videorecorder failed and error is ' + err.message);
}).catch((err) => {
console.info('reset videorecorder failed and catch error is ' + err.message);
});
```
### on('error')<sup>9+</sup>
on(type: 'error', callback: ErrorCallback): void
Subscribes to the video recording error event.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------- | ---- | ------------------------------------------------------------ |
| type | string | Yes | Type of the event to subscribe to, which is 'error' in this API.<br>The 'error' event is triggered when an error occurs during video recording.|
| callback | ErrorCallback | Yes | Callback invoked when the event is triggered. |
**Example**
```js
videoRecorder.on('error', (error) => { // Set the 'error' event callback.
console.info(`audio error called, errName is ${error.name}`); // Print the error name.
console.info(`audio error called, errCode is ${error.code}`); // Print the error code.
console.info(`audio error called, errMessage is ${error.message}`); // Print the detailed description of the error type.
});
// This event is reported when an error occurs during the retrieval of videoRecordState.
```
## VideoRecordState<sup>9+</sup>
Enumerates the video recording states. You can obtain the state through the **state** attribute.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Type | Description |
| -------- | ------ | ---------------------- |
| idle | string | The video recorder is idle. |
| prepared | string | The video recording parameters are set.|
| playing | string | Video recording is in progress. |
| paused | string | Video recording is paused. |
| stopped | string | Video recording is stopped. |
| error | string | Audio playback is in the error state. |
## VideoRecorderConfig<sup>9+</sup>
Describes the video recording parameters.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Type | Mandatory| Description |
| --------------- | ---------------------------------------------- | ---- | ------------------------------------------------------------ |
| audioSourceType | [AudioSourceType](#audiosourcetype9) | Yes | Type of the audio source for video recording. |
| videoSourceType | [VideoSourceType](#videosourcetype9) | Yes | Type of the video source for video recording. |
| profile | [VideoRecorderProfile](#videorecorderprofile9) | Yes | Video recording profile. |
| rotation | number | No | Rotation angle of the recorded video. |
| location | [Location](#location) | No | Geographical location of the recorded video. |
| url | string | Yes | Video output URL. Supported: fd://xx&nbsp;(fd&nbsp;number)<br>![](figures/en-us_image_url.png) <br>The file must be created by the caller and granted with proper permissions.|
## AudioSourceType<sup>9+</sup>
Enumerates the audio source types for video recording.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Value | Description |
| ------------------------- | ---- | ---------------------- |
| AUDIO_SOURCE_TYPE_DEFAULT | 0 | Default audio input source.|
| AUDIO_SOURCE_TYPE_MIC | 1 | Mic audio input source. |
## VideoSourceType<sup>9+</sup>
Enumerates the video source types for video recording.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Value | Description |
| ----------------------------- | ---- | ------------------------------- |
| VIDEO_SOURCE_TYPE_SURFACE_YUV | 0 | The input surface carries raw data.|
| VIDEO_SOURCE_TYPE_SURFACE_ES | 1 | The input surface carries ES data. |
## VideoRecorderProfile<sup>9+</sup>
Describes the video recording profile.
**System capability**: SystemCapability.Multimedia.Media.VideoRecorder
| Name | Type | Mandatory| Description |
| ---------------- | -------------------------------------------- | ---- | ---------------- |
| audioBitrate | number | Yes | Audio encoding bit rate.|
| audioChannels | number | Yes | Number of audio channels.|
| audioCodec | [CodecMimeType](#codecmimetype8) | Yes | Audio encoding format. |
| audioSampleRate | number | Yes | Audio sampling rate. |
| fileFormat | [ContainerFormatType](#containerformattype8) | Yes | Container format of a file.|
| videoBitrate | number | Yes | Video encoding bit rate.|
| videoCodec | [CodecMimeType](#codecmimetype8) | Yes | Video encoding format. |
| videoFrameWidth | number | Yes | Width of the recorded video frame.|
| videoFrameHeight | number | Yes | Height of the recorded video frame.|
| videoFrameRate | number | Yes | Video frame rate. |
## ContainerFormatType<sup>8+</sup> ## ContainerFormatType<sup>8+</sup>
Enumerates the container format types (CFTs). Enumerates the container format types (CFTs).
......
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