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!16028 翻译完成：14247+14293+15739 update avsession 

Merge pull request !16028 from wusongqing/TR14247
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en/application-dev/reference/apis/js-apis-avsession.md
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......@@ -2,7 +2,7 @@
The **avSession** module provides APIs for media playback control so that applications can access the system's Media Controller.
This module provides the following common features related to media sessions:
This module provides the following typical features related to media sessions:
- [AVSession](#avsession): used to set session metadata, playback state information, and more.
- [AVSessionController](#avsessioncontroller): used to obtain session IDs, send commands and events to sessions, and obtain the session metadata and playback state information.
......@@ -26,6 +26,8 @@ Creates a media session. This API uses a promise to return the result. An abilit
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name| Type | Mandatory| Description |
......@@ -41,8 +43,8 @@ Creates a media session. This API uses a promise to return the result. An abilit
| --------------------------------- | ------------------------------------------------------------ |
| Promise<[AVSession](#avsession)\> | Promise used to return the media session obtained, which can be used to obtain the session ID, set the metadata and playback state information, and send key events.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -74,6 +76,8 @@ Creates a media session. This API uses an asynchronous callback to return the re
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -84,6 +88,7 @@ Creates a media session. This API uses an asynchronous callback to return the re
| callback | AsyncCallback<[AVSession](#avsession)\> | Yes | Callback used to return the media session obtained, which can be used to obtain the session ID, set the metadata and playback state information, and send key events.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -128,6 +133,7 @@ Obtains the descriptors of all sessions. This API uses a promise to return the r
| Promise\<Array\<Readonly\<[AVSessionDescriptor](#avsessiondescriptor)\>\>\> | Promise used to return an array of **AVSessionDescriptor** objects, each of which is read only.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -155,7 +161,7 @@ getAllSessionDescriptors(callback: AsyncCallback\<Array\<Readonly\<AVSessionDesc
Obtains the descriptors of all sessions. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.MANAGE_MEDIA_RESOURCES (available only to system applications)
**Required permissions**: ohos.permission.MANAGE_MEDIA_RESOURCES
**System capability**: SystemCapability.Multimedia.AVSession.Manager
......@@ -168,6 +174,7 @@ Obtains the descriptors of all sessions. This API uses an asynchronous callback
| callback | AsyncCallback<Array<Readonly<[AVSessionDescriptor](#avsessiondescriptor)\>\>\> | Yes | Callback used to return an array of **AVSessionDescriptor** objects, each of which is read only.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -191,6 +198,101 @@ avSession.getAllSessionDescriptors(function (err, descriptors) {
});
```
## avSession.getHistoricalSessionDescriptors<sup>10+</sup>
getHistoricalSessionDescriptors(maxSize?: number): Promise\<Array\<Readonly\<AVSessionDescriptor>>>
Obtains the descriptors of all sessions. This API uses a promise to return the result.
**Required permissions**: ohos.permission.MANAGE_MEDIA_RESOURCES
**System capability**: SystemCapability.Multimedia.AVSession.Manager
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------ | ---- | -----------------------------------------------------------------|
| maxSize | number | No | Maximum number of descriptors to obtain. The value ranges from 0 to 10. If this parameter is left blank, the default value **3** is used.|
**Return value**
| Type | Description |
| --------------------------------------------------------------------------- | -------------------------------------- |
| Promise\<Array\<Readonly\<[AVSessionDescriptor](#avsessiondescriptor)\>\>\> | Promise used to return an array of **AVSessionDescriptor** objects, each of which is read only.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
**Example**
```js
avSession.getHistoricalSessionDescriptors().then((descriptors) => {
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors.length : ${descriptors.length}`);
if(descriptors.length > 0 ){
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].isActive : ${descriptors[0].isActive}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].type : ${descriptors[0].type}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].sessionTag : ${descriptors[0].sessionTag}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].sessionId : ${descriptors[0].sessionId}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].elementName.bundleName : ${descriptors[0].elementName.bundleName}`);
}
}).catch((err) => {
console.info(`getHistoricalSessionDescriptors BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
## avSession.getHistoricalSessionDescriptors<sup>10+</sup>
getHistoricalSessionDescriptors(maxSize: number, callback: AsyncCallback\<Array\<Readonly\<AVSessionDescriptor>>>): void
Obtains the descriptors of all sessions. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.MANAGE_MEDIA_RESOURCES
**System capability**: SystemCapability.Multimedia.AVSession.Manager
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------------------------ | ---- | -----------------------------------------------------------------|
| maxSize | number | Yes | Maximum number of descriptors to obtain. The value ranges from 0 to 10. If this parameter is left blank, the default value **3** is used.|
| callback | AsyncCallback<Array<Readonly<[AVSessionDescriptor](#avsessiondescriptor)\>\>\> | Yes | Callback used to return an array of **AVSessionDescriptor** objects, each of which is read only. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 |Session service exception. |
**Example**
```js
avSession.getHistoricalSessionDescriptors(1, function (err, descriptors) {
if (err) {
console.info(`getHistoricalSessionDescriptors BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors.length : ${descriptors.length}`);
if(descriptors.length > 0 ){
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].isActive : ${descriptors[0].isActive}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].type : ${descriptors[0].type}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].sessionTag : ${descriptors[0].sessionTag}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].sessionId : ${descriptors[0].sessionId}`);
console.info(`getHistoricalSessionDescriptors : SUCCESS : descriptors[0].elementName.bundleName : ${descriptors[0].elementName.bundleName}`);
}
}
});
```
## avSession.createController
createController(sessionId: string): Promise\<AVSessionController>
......@@ -216,6 +318,7 @@ Creates a session controller based on the session ID. Multiple session controlle
| Promise<[AVSessionController](#avsessioncontroller)\> | Promise used to return the session controller created, which can be used to obtain the session ID,<br>send commands and events to sessions, and obtain metadata and playback state information.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -268,6 +371,7 @@ Creates a session controller based on the session ID. Multiple session controlle
| callback | AsyncCallback<[AVSessionController](#avsessioncontroller)\> | Yes | Callback used to return the session controller created, which can be used to obtain the session ID,<br>send commands and events to sessions, and obtain metadata and playback state information.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -327,9 +431,10 @@ Before calling this API, import the **ohos.multimedia.audio** module to obtain t
| Type | Description |
| -------------- | ----------------------------- |
| Promise<void\> | Promise used to return the result. If the cast is successful, no value is returned; otherwise, an error object is returned.|
| Promise<void\> | Promise used to return the result. If the casting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -382,6 +487,7 @@ Before calling this API, import the **ohos.multimedia.audio** module to obtain t
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the casting is successful, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -433,6 +539,7 @@ Subscribes to session creation, session destruction, and top session change even
| callback | (session: [AVSessionDescriptor](#avsessiondescriptor)) => void | Yes | Callback used to report the session descriptor. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -478,9 +585,10 @@ Unsubscribes from session creation, session destruction, and top session change
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| type | string | Yes | Event type.<br>- **'sessionCreate'**: session creation event, which is reported when a session is created.<br>- **'sessionDestroy'**: session destruction event, which is reported when a session is destroyed.<br>- **'topSessionChange'**: top session change event, which is reported when the top session is changed.|
| callback | (session: [AVSessionDescriptor](#avsessiondescriptor)) => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **session** parameter in the callback describes a media session. The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (session: [AVSessionDescriptor](#avsessiondescriptor)) => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **session** parameter in the callback describes a media session. The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -503,6 +611,8 @@ Subscribes to session service death events.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -511,6 +621,7 @@ Subscribes to session service death events.
| callback | callback: () => void | Yes | Callback used for subscription. If the subscription is successful, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -533,14 +644,17 @@ Unsubscribes from session service death events.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory | Description |
| ------ | ---------------------- | ---- | ------------------------------------------------------- |
| type | string | Yes | Event type. The event **'sessionServiceDie'** is reported when the session service dies.|
| callback | callback: () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | callback: () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -578,6 +692,7 @@ Sends a system key event to the top session. This API uses a promise to return t
| Promise<void\> | Promise used to return the result. If the event is sent, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -620,6 +735,7 @@ Sends a system key event to the top session. This API uses an asynchronous callb
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the event is sent, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -667,6 +783,7 @@ Sends a system control command to the top session. This API uses a promise to re
| Promise<void\> | Promise used to return the result. If the command is sent, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -721,6 +838,7 @@ Sends a system control command to the top session. This API uses an asynchronous
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the command is sent, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -765,6 +883,8 @@ An **AVSession** object is created by calling [avSession.createAVSession](#avses
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Readable| Writable| Description |
| :-------- | :----- | :--- | :--- | :---------------------------- |
......@@ -784,6 +904,8 @@ Sets session metadata. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name| Type | Mandatory| Description |
......@@ -797,6 +919,7 @@ Sets session metadata. This API uses a promise to return the result.
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -838,6 +961,8 @@ Sets session metadata. This API uses an asynchronous callback to return the resu
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -846,6 +971,7 @@ Sets session metadata. This API uses an asynchronous callback to return the resu
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -889,6 +1015,8 @@ Sets information related to the session playback state. This API uses a promise
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name| Type | Mandatory| Description |
......@@ -902,6 +1030,7 @@ Sets information related to the session playback state. This API uses a promise
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -935,6 +1064,8 @@ Sets information related to the session playback state. This API uses an asynchr
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -943,6 +1074,7 @@ Sets information related to the session playback state. This API uses an asynchr
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -970,6 +1102,220 @@ session.setAVPlaybackState(PlaybackState, function (err) {
});
```
### setAVQueueItems<sup>10+</sup>
setAVQueueItems(items: Array\<AVQueueItem>): Promise<void\>
Sets a playlist. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| ------ | ------------------------------------ | ---- | ---------------------------------- |
| items | Array<[AVQueueItem](#avqueueitem10)\> | Yes | Playlist to set.|
**Return value**
| Type | Description |
| -------------- | ----------------------------- |
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueItemDescription_1 = {
mediaId: '001',
title: 'music_name',
subtitle: 'music_sub_name',
description: 'music_description',
icon: PIXELMAP_OBJECT,
iconUri: 'http://www.icon.uri.com',
extras: {'extras':'any'}
};
let queueItem_1 = {
itemId: 1,
description: queueItemDescription_1
};
let queueItemDescription_2 = {
mediaId: '002',
title: 'music_name',
subtitle: 'music_sub_name',
description: 'music_description',
icon: PIXELMAP_OBJECT,
iconUri: 'http://www.icon.uri.com',
extras: {'extras':'any'}
};
let queueItem_2 = {
itemId: 2,
description: queueItemDescription_2
};
let queueItemsArray = [queueItem_1, queueItem_2];
session.setAVQueueItems(queueItemsArray).then(() => {
console.info('SetAVQueueItems successfully');
}).catch((err) => {
console.info(`SetAVQueueItems BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
### setAVQueueItems<sup>10+</sup>
setAVQueueItems(items: Array\<AVQueueItem>, callback: AsyncCallback<void\>): void
Sets a playlist. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------ | ---- | ----------------------------------------------------------- |
| items | Array<[AVQueueItem](#avqueueitem10)\> | Yes | Playlist to set. |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueItemDescription_1 = {
mediaId: '001',
title: 'music_name',
subtitle: 'music_sub_name',
description: 'music_description',
icon: PIXELMAP_OBJECT,
iconUri: 'http://www.icon.uri.com',
extras: {'extras':'any'}
};
let queueItem_1 = {
itemId: 1,
description: queueItemDescription_1
};
let queueItemDescription_2 = {
mediaId: '002',
title: 'music_name',
subtitle: 'music_sub_name',
description: 'music_description',
icon: PIXELMAP_OBJECT,
iconUri: 'http://www.icon.uri.com',
extras: {'extras':'any'}
};
let queueItem_2 = {
itemId: 2,
description: queueItemDescription_2
};
let queueItemsArray = [queueItem_1, queueItem_2];
session.setAVQueueItems(queueItemsArray, function (err) {
if (err) {
console.info(`SetAVQueueItems BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info('SetAVQueueItems successfully');
}
});
```
### setAVQueueTitle<sup>10+</sup>
setAVQueueTitle(title: string): Promise\<void>
Sets a name for the playlist. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| ------ | ------ | ---- | -------------- |
| title | string | Yes | Name of the playlist.|
**Return value**
| Type | Description |
| -------------- | ----------------------------- |
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueTitle = 'QUEUE_TITLE';
session.setAVQueueTitle(queueTitle).then(() => {
console.info('SetAVQueueTitle successfully');
}).catch((err) => {
console.info(`SetAVQueueTitle BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
### setAVQueueTitle<sup>10+</sup>
setAVQueueTitle(title: string, callback: AsyncCallback\<void\>): void
Sets a name for the playlist. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------- | ---- | ----------------------------------------------------------- |
| title | string | Yes | Name of the playlist. |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueTitle = 'QUEUE_TITLE';
session.setAVQueueTitle(queueTitle, function (err) {
if (err) {
console.info(`SetAVQueueTitle BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info('SetAVQueueTitle successfully');
}
});
```
### setLaunchAbility
setLaunchAbility(ability: WantAgent): Promise\<void>
......@@ -978,6 +1324,8 @@ Sets a launcher ability. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -991,6 +1339,7 @@ Sets a launcher ability. This API uses a promise to return the result.
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1048,6 +1397,8 @@ Sets a launcher ability. This API uses an asynchronous callback to return the re
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1056,6 +1407,7 @@ Sets a launcher ability. This API uses an asynchronous callback to return the re
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1107,21 +1459,109 @@ wantAgent.getWantAgent(wantAgentInfo).then((agent) => {
});
```
### getController
### dispatchSessionEvent<sup>10+</sup>
getController(): Promise\<AVSessionController>
dispatchSessionEvent(event: string, args: {[key: string]: Object}): Promise\<void>
Obtains the controller corresponding to this session. This API uses a promise to return the result.
Dispatches a custom event in the session, including the event name and event content in key-value pair format. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**Return value**
**System API**: This is a system API.
| Type | Description |
| ---------------------------------------------------- | ----------------------------- |
| Promise<[AVSessionController](#avsessioncontroller)> | Promise used to return the session controller.|
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | --------------------------------------------- | ---- | ----------------------------------------------------------- |
| event | string | Yes | Name of the session event.|
| args | {[key: string]: any} | Yes | Event content in key-value pair format.|
**Return value**
| Type | Description |
| -------------- | ----------------------------- |
| Promise<void\> | Promise used to return the result. If the setting is successful, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let eventName = "dynamic_lyric";
let args = {
lyric : "This is lyric"
}
await session.dispatchSessionEvent(eventName, args).catch((err) => {
console.info(`dispatchSessionEvent BusinessError: code: ${err.code}, message: ${err.message}`);
})
```
### dispatchSessionEvent<sup>10+</sup>
dispatchSessionEvent(event: string, args: {[key: string]: Object}, callback: AsyncCallback<void>): void
Dispatches a custom event in the session, including the event name and event content in key-value pair format. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | --------------------------------------------- | ---- | ----------------------------------------------------------- |
| event | string | Yes | Name of the session event.|
| args | {[key: string]: any} | Yes | Event content in key-value pair format.|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let eventName = "dynamic_lyric";
let args = {
lyric : "This is lyric"
}
await session.dispatchSessionEvent(eventName, args, (err) => {
if(err) {
console.info(`dispatchSessionEvent BusinessError: code: ${err.code}, message: ${err.message}`);
}
})
```
### getController
getController(): Promise\<AVSessionController>
Obtains the controller corresponding to this session. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
| ---------------------------------------------------- | ----------------------------- |
| Promise<[AVSessionController](#avsessioncontroller)> | Promise used to return the session controller.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1149,6 +1589,8 @@ Obtains the controller corresponding to this session. This API uses an asynchron
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1156,6 +1598,7 @@ Obtains the controller corresponding to this session. This API uses an asynchron
| callback | AsyncCallback<[AVSessionController](#avsessioncontroller)\> | Yes | Callback used to return the session controller.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1185,6 +1628,8 @@ Obtains information about the output device for this session. This API uses a pr
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -1192,6 +1637,7 @@ Obtains information about the output device for this session. This API uses a pr
| Promise<[OutputDeviceInfo](#outputdeviceinfo)> | Promise used to return the output device information.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1217,6 +1663,8 @@ Obtains information about the output device for this session. This API uses an a
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1224,6 +1672,7 @@ Obtains information about the output device for this session. This API uses an a
| callback | AsyncCallback<[OutputDeviceInfo](#outputdeviceinfo)\> | Yes | Callback used to return the information obtained.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1251,6 +1700,8 @@ Activates this session. A session can be used only after being activated. This A
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -1258,6 +1709,7 @@ Activates this session. A session can be used only after being activated. This A
| Promise<void\> | Promise used to return the result. If the session is activated, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1283,6 +1735,8 @@ Activates this session. A session can be used only after being activated. This A
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1290,6 +1744,7 @@ Activates this session. A session can be used only after being activated. This A
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the session is activated, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1317,6 +1772,8 @@ Deactivates this session. You can use [activate](#activate) to activate the sess
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -1324,6 +1781,7 @@ Deactivates this session. You can use [activate](#activate) to activate the sess
| Promise<void\> | Promise used to return the result. If the session is deactivated, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1351,6 +1809,8 @@ Deactivates this session. You can use [activate](#activate) to activate the sess
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1358,6 +1818,7 @@ Deactivates this session. You can use [activate](#activate) to activate the sess
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the session is deactivated, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1385,6 +1846,8 @@ Destroys this session. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -1392,6 +1855,7 @@ Destroys this session. This API uses a promise to return the result.
| Promise<void\> | Promise used to return the result. If the session is destroyed, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1415,9 +1879,10 @@ destroy(callback: AsyncCallback\<void>): void
Destroys this session. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1425,6 +1890,7 @@ Destroys this session. This API uses an asynchronous callback to return the resu
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the session is destroyed, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1452,6 +1918,8 @@ Subscribes to playback command events.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1460,6 +1928,7 @@ Subscribes to playback command events.
| callback | callback: () => void | Yes | Callback used for subscription. If the subscription is successful, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1501,6 +1970,8 @@ Subscribes to the seek event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1509,6 +1980,7 @@ Subscribes to the seek event.
| callback | (time: number) => void | Yes | Callback used for subscription. The **time** parameter in the callback indicates the time to seek to, in milliseconds. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1532,6 +2004,8 @@ Subscribes to the event for setting the playback speed.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1540,6 +2014,7 @@ Subscribes to the event for setting the playback speed.
| callback | (speed: number) => void | Yes | Callback used for subscription. The **speed** parameter in the callback indicates the playback speed. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1563,6 +2038,8 @@ Subscribes to the event for setting the loop mode.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1571,6 +2048,7 @@ Subscribes to the event for setting the loop mode.
| callback | (mode: [LoopMode](#loopmode)) => void | Yes | Callback used for subscription. The **mode** parameter in the callback indicates the loop mode. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1594,6 +2072,8 @@ Subscribes to the event for favoriting a media asset.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1602,6 +2082,7 @@ Subscribes to the event for favoriting a media asset.
| callback | (assetId: string) => void | Yes | Callback used for subscription. The **assetId** parameter in the callback indicates the media asset ID. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1617,6 +2098,40 @@ session.on('toggleFavorite', (assetId) => {
});
```
### on('skipToQueueItem')<sup>10+</sup>
on(type: 'skipToQueueItem', callback: (itemId: number) => void): void
Subscribes to the event that indicates an item in the playlist is selected. The session can play the selected item.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------ | ---- | ---------------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The event **'skipToQueueItem'** is reported when the command for selecting an item in the playlist is sent to the session.|
| callback | (itemId: number) => void | Yes | Callback used for subscription. The **itemId** parameter in the callback indicates the ID of the selected item. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
session.on('skipToQueueItem', (itemId) => {
console.info(`on skipToQueueItem id : ${itemId}`);
});
```
### on('handleKeyEvent')
on(type: 'handleKeyEvent', callback: (event: KeyEvent) => void): void
......@@ -1625,6 +2140,8 @@ Subscribes to the key event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1633,6 +2150,7 @@ Subscribes to the key event.
| callback | (event: [KeyEvent](js-apis-keyevent.md)) => void | Yes | Callback used for subscription. The **event** parameter in the callback indicates the key event. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1656,6 +2174,8 @@ Subscribes to output device changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1664,6 +2184,7 @@ Subscribes to output device changes.
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | Yes | Callback used for subscription. The **device** parameter in the callback indicates the output device information. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1679,6 +2200,40 @@ session.on('outputDeviceChange', (device) => {
});
```
### on('commonCommand')<sup>10+</sup>
on(type: 'commonCommand', callback: (command: string, args: {[key: string]: Object}) => void): void
Subscribes to custom control command changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| type | string | Yes | Event type. The event **'commonCommand'** is reported when a custom control command changes.|
| callback | (commonCommand: string, args: {[key:string]: Object}) => void | Yes | Callback used for subscription. The **commonCommand** parameter in the callback indicates the name of the changed custom control command, and **args** indicates the parameters carried in the command. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ------------------------------ |
| 6600101 | Session service exception. |
| 6600103 | The session controller does not exist. |
**Example**
```js
session.on('commonCommand', (commonCommand, args) => {
console.info(`OnCommonCommand, the command is ${commonCommand}, args: ${JSON.stringify(args)}`);
});
```
### off('play'|'pause'|'stop'|'playNext'|'playPrevious'|'fastForward'|'rewind')
off(type: 'play' | 'pause' | 'stop' | 'playNext' | 'playPrevious' | 'fastForward' | 'rewind', callback?: () => void): void
......@@ -1687,14 +2242,17 @@ Unsubscribes from playback command events.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ---------------------------------------------------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The following events are supported: **'play'**, **'pause'**, **'stop'**, **'playNext'**, **'playPrevious'**, **'fastForward'**, and **'rewind'**.|
| callback | callback: () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | callback: () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1722,14 +2280,17 @@ Unsubscribes from the seek event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------- | ---- | ----------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'seek'**. |
| callback | (time: number) => void | No | Callback used for unsubscription. The **time** parameter in the callback indicates the time to seek to, in milliseconds.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (time: number) => void | No | Callback used for unsubscription. The **time** parameter in the callback indicates the time to seek to, in milliseconds.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1751,14 +2312,17 @@ Unsubscribes from the event for setting the playback speed.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | -------------------------------------------|
| type | string | Yes | Event type. The value is fixed at **'setSpeed'**. |
| callback | (speed: number) => void | No | Callback used for unsubscription. The **speed** parameter in the callback indicates the playback speed.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (speed: number) => void | No | Callback used for unsubscription. The **speed** parameter in the callback indicates the playback speed.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1780,14 +2344,17 @@ Unsubscribes from the event for setting loop mode.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------- | ---- | ----- |
| type | string | Yes | Event type. The value is fixed at **'setLoopMode'**.|
| callback | (mode: [LoopMode](#loopmode)) => void | No | Callback used for unsubscription. The **mode** parameter in the callback indicates the loop mode.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions.|
| callback | (mode: [LoopMode](#loopmode)) => void | No | Callback used for unsubscription. The **mode** parameter in the callback indicates the loop mode.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1809,14 +2376,17 @@ Unsubscribes from the event for favoriting a media asset.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | -------------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'toggleFavorite'**. |
| callback | (assetId: string) => void | No | Callback used for unsubscription. The **assetId** parameter in the callback indicates the media asset ID.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (assetId: string) => void | No | Callback used for unsubscription. The **assetId** parameter in the callback indicates the media asset ID.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1830,6 +2400,38 @@ For details about the error codes, see [AVSession Management Error Codes](../err
session.off('toggleFavorite');
```
### off('skipToQueueItem')<sup>10+</sup>
off(type: 'skipToQueueItem', callback?: (itemId: number) => void): void
Unsubscribes from the event that indicates an item in the playlist is selected.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------ | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'skipToQueueItem'**. |
| callback | (itemId: number) => void | No | Callback used for unsubscription. The **itemId** parameter in the callback indicates the ID of the item.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
session.off('skipToQueueItem');
```
### off('handleKeyEvent')
off(type: 'handleKeyEvent', callback?: (event: KeyEvent) => void): void
......@@ -1838,14 +2440,17 @@ Unsubscribes from the key event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| type | string | Yes | Event type. The value is fixed at **'handleKeyEvent'**. |
| callback | (event: [KeyEvent](js-apis-keyevent.md)) => void | No | Callback used for unsubscription. The **event** parameter in the callback indicates the key event.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (event: [KeyEvent](js-apis-keyevent.md)) => void | No | Callback used for unsubscription. The **event** parameter in the callback indicates the key event.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1867,14 +2472,17 @@ Unsubscribes from playback device changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------- | ---- | ------------------------------------------------------ |
| type | string | Yes | Event type. The value is fixed at **'outputDeviceChange'**. |
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | No | Callback used for unsubscription. The **device** parameter in the callback indicates the output device information.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | No | Callback used for unsubscription. The **device** parameter in the callback indicates the output device information.<br>If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1889,6 +2497,38 @@ session.off('outputDeviceChange');
```
### off('commonCommand')<sup>10+</sup>
off(type: 'commonCommand', callback?: (commonCommand: string, args: {[key:string]: Object}) => void): void
Unsubscribes from custom control command changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ----------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'commonCommand'**. |
| callback | (commonCommand: string, args: {[key:string]: Object}) => void | No | Callback used for unsubscription. The **commonCommand** parameter in the callback indicates the name of the changed custom control command, and **args** indicates the parameters carried in the command.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------- |
| 6600101 | Session service exception. |
**Example**
```js
session.off('commonCommand');
```
## AVSessionController
......@@ -1922,6 +2562,8 @@ Obtains the information related to the playback state. This API uses a promise t
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -1929,6 +2571,7 @@ Obtains the information related to the playback state. This API uses a promise t
| Promise<[AVPlaybackState](#avplaybackstate)\> | Promise used to return the **AVPlaybackState** object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1954,6 +2597,8 @@ Obtains the information related to the playback state. This API uses an asynchro
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -1961,6 +2606,7 @@ Obtains the information related to the playback state. This API uses an asynchro
| callback | AsyncCallback<[AVPlaybackState](#avplaybackstate)\> | Yes | Callback used to return the **AVPlaybackState** object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -1980,21 +2626,249 @@ controller.getAVPlaybackState(function (err, playbackState) {
});
```
### getAVMetadata
### getAVQueueItems<sup>10+</sup>
getAVMetadata(): Promise\<AVMetadata>
getAVQueueItems(): Promise\<Array\<AVQueueItem>>
Obtains the session metadata. This API uses a promise to return the result.
Obtains the information related to the items in the queue. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
| ----------------------------------- | ----------------------------- |
| --------------------------------------------- | ----------------------------- |
| Promise<Array<[AVQueueItem](#avqueueitem10)\>\> | Promise used to return the items in the queue.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.getAVQueueItems().then((items) => {
console.info(`GetAVQueueItems : SUCCESS : length : ${items.length}`);
}).catch((err) => {
console.info(`GetAVQueueItems BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
### getAVQueueItems<sup>10+</sup>
getAVQueueItems(callback: AsyncCallback\<Array\<AVQueueItem>>): void
Obtains the information related to the items in the playlist. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------------- | ---- | ------------------------- |
| callback | AsyncCallback<Array<[AVQueueItem](#avqueueitem10)\>\> | Yes | Callback used to return the items in the playlist.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.getAVQueueItems(function (err, items) {
if (err) {
console.info(`GetAVQueueItems BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info(`GetAVQueueItems : SUCCESS : length : ${items.length}`);
}
});
```
### getAVQueueTitle<sup>10+</sup>
getAVQueueTitle(): Promise\<string>
Obtains the name of the playlist. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
| ---------------- | ----------------------------- |
| Promise<string\> | Promise used to return the playlist name.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.getAVQueueTitle().then((title) => {
console.info(`GetAVQueueTitle : SUCCESS : title : ${title}`);
}).catch((err) => {
console.info(`GetAVQueueTitle BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
### getAVQueueTitle<sup>10+</sup>
getAVQueueTitle(callback: AsyncCallback\<string>): void
Obtains the name of the playlist. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------- | ---- | ------------------------- |
| callback | AsyncCallback<string\> | Yes | Callback used to return the playlist name.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.getAVQueueTitle(function (err, title) {
if (err) {
console.info(`GetAVQueueTitle BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info(`GetAVQueueTitle : SUCCESS : title : ${title}`);
}
});
```
### skipToQueueItem<sup>10+</sup>
skipToQueueItem(itemId: number): Promise\<void>
Sends the ID of an item in the playlist to the session for processing. The session can play the song. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| ------ | ------- | ---- | ------------------------------------------- |
| itemId | number | Yes | ID of an item in the playlist.|
**Return value**
| Type | Description |
| -------------- | --------------------------------------------------------------- |
| Promise<void\> | Promise used to return the result. If the item ID is sent, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueItemId = 0;
controller.skipToQueueItem(queueItemId).then(() => {
console.info('SkipToQueueItem successfully');
}).catch((err) => {
console.info(`SkipToQueueItem BusinessError: code: ${err.code}, message: ${err.message}`);
});
```
### skipToQueueItem<sup>10+</sup>
skipToQueueItem(itemId: number, callback: AsyncCallback\<void>): void
Sends the ID of an item in the playlist to the session for processing. The session can play the song. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------- | ---- | ----------------------------------------------------------- |
| itemId | number | Yes | ID of an item in the playlist. |
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the setting is successful, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
**Example**
```js
let queueItemId = 0;
controller.skipToQueueItem(queueItemId, function (err) {
if (err) {
console.info(`SkipToQueueItem BusinessError: code: ${err.code}, message: ${err.message}`);
} else {
console.info('SkipToQueueItem successfully');
}
});
```
### getAVMetadata
getAVMetadata(): Promise\<AVMetadata>
Obtains the session metadata. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
| ----------------------------------- | ----------------------------- |
| Promise<[AVMetadata](#avmetadata)\> | Promise used to return the metadata obtained.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2020,6 +2894,8 @@ Obtains the session metadata. This API uses an asynchronous callback to return t
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2027,6 +2903,7 @@ Obtains the session metadata. This API uses an asynchronous callback to return t
| callback | AsyncCallback<[AVMetadata](#avmetadata)\> | Yes | Callback used to return the metadata obtained.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2054,6 +2931,8 @@ Obtains the output device information. This API uses a promise to return the res
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2061,6 +2940,7 @@ Obtains the output device information. This API uses a promise to return the res
| Promise<[OutputDeviceInfo](#outputdeviceinfo)\> | Promise used to return the information obtained.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2085,6 +2965,8 @@ Obtains the output device information. This API uses an asynchronous callback to
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2092,6 +2974,7 @@ Obtains the output device information. This API uses an asynchronous callback to
| callback | AsyncCallback<[OutputDeviceInfo](#outputdeviceinfo)\> | Yes | Callback used to return the information obtained.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2119,6 +3002,8 @@ Sends a key event to the session corresponding to this controller. This API uses
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name| Type | Mandatory| Description |
......@@ -2126,6 +3011,7 @@ Sends a key event to the session corresponding to this controller. This API uses
| event | [KeyEvent](js-apis-keyevent.md) | Yes | Key event.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2163,6 +3049,8 @@ Sends a key event to the session corresponding to this controller. This API uses
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2171,6 +3059,7 @@ Sends a key event to the session corresponding to this controller. This API uses
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the event is sent, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2204,6 +3093,8 @@ Obtains the **WantAgent** object saved by the application in the session. This A
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2211,6 +3102,7 @@ Obtains the **WantAgent** object saved by the application in the session. This A
| Promise<[WantAgent](js-apis-app-ability-wantAgent.md)\> | Promise used to return the object saved by calling [setLaunchAbility](#setlaunchability). The object includes the application attribute, such as the bundle name, ability name, and device ID.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2239,6 +3131,8 @@ Obtains the **WantAgent** object saved by the application in the session. This A
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2246,6 +3140,7 @@ Obtains the **WantAgent** object saved by the application in the session. This A
| callback | AsyncCallback<[WantAgent](js-apis-app-ability-wantAgent.md)\> | Yes | Callback used to return the object saved by calling [setLaunchAbility](#setlaunchability). The object includes the application attribute, such as the bundle name, ability name, and device ID.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2276,6 +3171,8 @@ Obtains the playback position.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2283,6 +3180,7 @@ Obtains the playback position.
| number | Playback position, in milliseconds.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2304,6 +3202,8 @@ Checks whether the session is activated. This API uses a promise to return the r
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2311,6 +3211,7 @@ Checks whether the session is activated. This API uses a promise to return the r
| Promise<boolean\> | Promise used to return the activation state. If the session is activated, **true** is returned; otherwise, **false** is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2337,6 +3238,8 @@ Checks whether the session is activated. This API uses an asynchronous callback
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2344,6 +3247,7 @@ Checks whether the session is activated. This API uses an asynchronous callback
| callback | AsyncCallback<boolean\> | Yes | Callback used to return the activation state. If the session is activated, **true** is returned; otherwise, **false** is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2372,6 +3276,8 @@ Destroys this controller. A controller can no longer be used after being destroy
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2379,6 +3285,7 @@ Destroys this controller. A controller can no longer be used after being destroy
| Promise<void\> | Promise used to return the result. If the controller is destroyed, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2404,6 +3311,8 @@ Destroys this controller. A controller can no longer be used after being destroy
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2411,6 +3320,7 @@ Destroys this controller. A controller can no longer be used after being destroy
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the controller is destroyed, **err** is **undefined**; otherwise, **err** is an error object.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2438,6 +3348,8 @@ Obtains valid commands supported by the session. This API uses a promise to retu
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Return value**
| Type | Description |
......@@ -2445,6 +3357,7 @@ Obtains valid commands supported by the session. This API uses a promise to retu
| Promise<Array<[AVControlCommandType](#avcontrolcommandtype)\>\> | Promise used to return a set of valid commands.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2471,6 +3384,8 @@ Obtains valid commands supported by the session. This API uses an asynchronous c
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2478,6 +3393,7 @@ Obtains valid commands supported by the session. This API uses an asynchronous c
| callback | AsyncCallback\<Array\<[AVControlCommandType](#avcontrolcommandtype)\>\> | Yes | Callback used to return a set of valid commands.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2506,6 +3422,8 @@ Sends a control command to the session through the controller. This API uses a p
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2519,6 +3437,7 @@ Sends a control command to the session through the controller. This API uses a p
| Promise<void\> | Promise used to return the result. If the command is sent, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2559,6 +3478,8 @@ Sends a control command to the session through the controller. This API uses an
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2567,6 +3488,7 @@ Sends a control command to the session through the controller. This API uses an
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the command is sent, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2601,6 +3523,95 @@ controller.sendControlCommand(avCommand, function (err) {
});
```
### sendCommonCommand<sup>10+</sup>
sendCommonCommand(command: string, args: {[key: string]: Object}): Promise\<void>
Sends a custom control command to the session through the controller. This API uses a promise to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------------------------------- | ---- | ------------------------------ |
| command | string | Yes | Name of the custom control command.|
| args | {[key: string]: any} | Yes | Parameters in key-value pair format carried in the custom control command.|
**Return value**
| Type | Description |
| -------------- | ----------------------------- |
| Promise<void\> | Promise used to return the result. If the command is sent, no value is returned; otherwise, an error object is returned.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
| 6600105 | Invalid session command. |
| 6600106 | The session is not activated. |
| 6600107 | Too many commands or events. |
**Example**
```js
let commandName = "my_command";
let args = {
command : "This is my command"
}
await controller.sendCommonCommand(commandName, args).catch((err) => {
console.info(`SendCommonCommand BusinessError: code: ${err.code}, message: ${err.message}`);
})
```
### sendCommonCommand<sup>10+</sup>
sendCommonCommand(command: string, args: {[key: string]: Object}, callback: AsyncCallback\<void>): void
Sends a custom control command to the session through the controller. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------------------------------------- | ---- | ------------------------------ |
| command | string | Yes | Name of the custom control command.|
| args | {[key: string]: any} | Yes | Parameters in key-value pair format carried in the custom control command.|
| callback | AsyncCallback<void\> | Yes | Callback used to return the result. If the command is sent, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ------------------------------- |
| 6600101 | Session service exception. |
| 6600102 | The session does not exist. |
| 6600103 | The session controller does not exist. |
| 6600105 | Invalid session command. |
| 6600106 | The session is not activated. |
| 6600107 | Too many commands or events. |
**Example**
```js
let commandName = "my_command";
let args = {
command : "This is my command"
}
controller.sendCommonCommand(commandName, args, (err) => {
if(err) {
console.info(`SendCommonCommand BusinessError: code: ${err.code}, message: ${err.message}`);
}
})
```
### on('metadataChange')
on(type: 'metadataChange', filter: Array\<keyof AVMetadata> | 'all', callback: (data: AVMetadata) => void)
......@@ -2609,6 +3620,8 @@ Subscribes to the metadata change event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2618,6 +3631,7 @@ Subscribes to the metadata change event.
| callback | (data: [AVMetadata](#avmetadata)) => void | Yes | Callback used for subscription. The **data** parameter in the callback indicates the changed metadata. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2646,6 +3660,8 @@ Subscribes to the playback state change event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2655,6 +3671,7 @@ Subscribes to the playback state change event.
| callback | (state: [AVPlaybackState](#avplaybackstate)) => void | Yes | Callback used for subscription. The **state** parameter in the callback indicates the changed playback state. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2675,6 +3692,108 @@ controller.on('playbackStateChange', playbackFilter, (playbackState) => {
});
```
### on('sessionEvent')<sup>10+</sup>
on(type: 'sessionEvent', callback: (sessionEvent: string, args: {[key:string]: Object}) => void): void
Subscribes to session event changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| type | string | Yes | Event type. The event **'sessionEvent'** is reported when the session event changes.|
| callback | (sessionEvent: string, args: {[key:string]: object}) => void | Yes | Callback used for subscription. **sessionEvent** in the callback indicates the name of the session event that changes, and **args** indicates the parameters carried in the event. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ------------------------------ |
| 6600101 | Session service exception. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.on('sessionEvent', (sessionEvent, args) => {
console.info(`OnSessionEvent, sessionEvent is ${sessionEvent}, args: ${JSON.stringify(args)}`);
});
```
### on('queueItemsChange')<sup>10+</sup>
on(type: 'queueItemsChange', callback: (items: Array<[AVQueueItem](#avqueueitem10)\>) => void): void
Subscribes to playlist item changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------------------------------------- | ---- | ---------------------------------------------------------------------------- |
| type | string | Yes | Event type. The event **'queueItemsChange'** is reported when one or more items in the playlist changes.|
| callback | (items: Array<[AVQueueItem](#avqueueitem10)\>) => void | Yes | Callback used for subscription. **items** in the callback indicates the names of the items that change, and **args** indicates the parameters carried in the event. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ------------------------------ |
| 6600101 | Session service exception. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.on('queueItemsChange', (items) => {
console.info(`OnQueueItemsChange, items length is ${items.length}`);
});
```
### on('queueTitleChange')<sup>10+</sup>
on(type: 'queueTitleChange', callback: (title: string) => void): void
Subscribes to playlist name changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | ------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The event **'queueTitleChange'** is reported when the playlist name changes.|
| callback | (title: string) => void | Yes | Callback used for subscription. **items** in the callback indicates the name of the playlist that changes, and **args** indicates the parameters carried in the event. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ------------------------------ |
| 6600101 | Session service exception. |
| 6600103 | The session controller does not exist. |
**Example**
```js
controller.on('queueTitleChange', (title) => {
console.info(`queueTitleChange, title is ${title}`);
});
```
### on('sessionDestroy')
on(type: 'sessionDestroy', callback: () => void)
......@@ -2683,6 +3802,8 @@ Subscribes to the session destruction event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2691,6 +3812,7 @@ Subscribes to the session destruction event.
| callback | () => void | Yes | Callback used for subscription. If the subscription is successful, **err** is **undefined**; otherwise, **err** is an error object. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2714,6 +3836,8 @@ Subscribes to the session activation state change event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2722,6 +3846,7 @@ Subscribes to the session activation state change event.
| callback | (isActive: boolean) => void | Yes | Callback used for subscription. The **isActive** parameter in the callback specifies whether the session is activated. The value **true** means that the service is activated, and **false** means the opposite. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2745,6 +3870,8 @@ Subscribes to valid command changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2753,6 +3880,7 @@ Subscribes to valid command changes.
| callback | (commands: Array<[AVControlCommandType](#avcontrolcommandtype)\>) => void | Yes | Callback used for subscription. The **commands** parameter in the callback is a set of valid commands. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2777,6 +3905,8 @@ Subscribes to output device changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
......@@ -2785,6 +3915,7 @@ Subscribes to output device changes.
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | Yes | Callback used for subscription. The **device** parameter in the callback indicates the output device information. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2808,14 +3939,17 @@ Unsubscribes from metadata changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------ | ---- | ------------------------------------------------------ |
| type | string | Yes | Event type. The event **'metadataChange'** is reported when the session metadata changes. |
| callback | (data: [AVMetadata](#avmetadata)) => void | No | Callback used for subscription. The **data** parameter in the callback indicates the changed metadata.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (data: [AVMetadata](#avmetadata)) => void | No | Callback used for subscription. The **data** parameter in the callback indicates the changed metadata.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2836,14 +3970,17 @@ Unsubscribes from playback state changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ----------------------------------------------------- |
| type | string | Yes | Event type. The event **'playbackStateChange'** is reported when the playback state changes. |
| callback | (state: [AVPlaybackState](#avplaybackstate)) => void | No | Callback used for subscription. The **state** parameter in the callback indicates the changed playback state.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (state: [AVPlaybackState](#avplaybackstate)) => void | No | Callback used for subscription. The **state** parameter in the callback indicates the changed playback state.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2856,6 +3993,99 @@ For details about the error codes, see [AVSession Management Error Codes](../err
controller.off('playbackStateChange');
```
### off('sessionEvent')<sup>10+</sup>
off(type: 'sessionEvent', callback?: (sessionEvent: string, args: {[key:string]: Obejct}) => void): void
Unsubscribes from session event changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ----------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'sessionEvent'**. |
| callback | (sessionEvent: string, args: {[key:string]: object}) => void | No | Callback used for unsubscription. **sessionEvent** in the callback indicates the name of the session event that changes, and **args** indicates the parameters carried in the event.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------- |
| 6600101 | Session service exception. |
**Example**
```js
controller.off('sessionEvent');
```
### off('queueItemsChange')<sup>10+</sup>
off(type: 'queueItemsChange', callback?: (items: Array<[AVQueueItem](#avqueueitem10)\>) => void): void
Unsubscribes from playback item changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------------------------------- | ---- | --------------------------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'queueItemsChange'**. |
| callback | (items: Array<[AVQueueItem](#avqueueitem10)\>) => void | No | Callback used for unsubscription. The **items** parameter in the callback indicates the changed items in the playback.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------- |
| 6600101 | Session service exception. |
**Example**
```js
controller.off('queueItemsChange');
```
### off('queueTitleChange')<sup>10+</sup>
off(type: 'queueTitleChange', callback?: (title: string) => void): void
Unsubscribes from playlist name changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | ------------------------------------------------------------------------------------------------------- |
| type | string | Yes | Event type. The value is fixed at **'queueTitleChange'**. |
| callback | (title: string) => void | No | Callback used for unsubscription. The **items** parameter in the callback indicates the changed playlist name.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session.|
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
| -------- | ---------------- |
| 6600101 | Session service exception. |
**Example**
```js
controller.off('queueTitleChange');
```
### off('sessionDestroy')
off(type: 'sessionDestroy', callback?: () => void)
......@@ -2864,14 +4094,17 @@ Unsubscribes from the session destruction event.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------- | ---- | ----------------------------------------------------- |
| type | string | Yes | Event type. The event **'sessionDestroy'** is reported when the session is destroyed. |
| callback | () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | () => void | No | Callback used for unsubscription. If the unsubscription is successful, **err** is **undefined**; otherwise, **err** is an error object.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2892,14 +4125,17 @@ Unsubscribes from session activation state changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------- | ---- | ----------------------------------------------------- |
| type | string | Yes | Event type. The event **'activeStateChange'** is reported when the session activation state changes. |
| callback | (isActive: boolean) => void | No | Callback used for unsubscription. The **isActive** parameter in the callback specifies whether the session is activated. The value **true** means that the session is activated, and **false** means the opposite.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (isActive: boolean) => void | No | Callback used for unsubscription. The **isActive** parameter in the callback specifies whether the session is activated. The value **true** means that the session is activated, and **false** means the opposite.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message|
......@@ -2920,14 +4156,17 @@ Unsubscribes from valid command changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | -------------------------------------------------------- |
| type | string | Yes | Event type. The event **'validCommandChange'** is reported when the supported commands change. |
| callback | (commands: Array<[AVControlCommandType](#avcontrolcommandtype)\>) => void | No | Callback used for unsubscription. The **commands** parameter in the command is a set of valid commands.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (commands: Array<[AVControlCommandType](#avcontrolcommandtype)\>) => void | No | Callback used for unsubscription. The **commands** parameter in the callback is a set of valid commands.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID| Error Message |
......@@ -2948,14 +4187,17 @@ Unsubscribes from output device changes.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------- | ---- | ------------------------------------------------------ |
| type | string | Yes | Event type. The event **'outputDeviceChange'** is reported when the output device changes. |
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | No | Callback used for unsubscription. The **device** parameter in the callback indicates the output device information.<br>The callback parameter is optional. If it is not specified, the specified event is no longer listened for all sessions. |
| callback | (device: [OutputDeviceInfo](#outputdeviceinfo)) => void | No | Callback used for unsubscription. The **device** parameter in the callback indicates the output device information.<br>The **callback** parameter is optional. If it is not specified, all the subscriptions to the specified event are canceled for this session. |
**Error codes**
For details about the error codes, see [AVSession Management Error Codes](../errorcodes/errorcode-avsession.md).
| ID | Error Message |
......@@ -2989,6 +4231,8 @@ Enumerates the session types supported by the session.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Description|
| ----- | ------ | ---- |
| audio | string | Audio session.|
......@@ -3018,6 +4262,8 @@ Enumerates the commands that can be sent to a session.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Description |
| -------------- | ------ | ------------ |
| play | string | Play the media. |
......@@ -3038,6 +4284,8 @@ Describes the command that can be sent to the session.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Mandatory| Description |
| --------- | ------------------------------------------------- | ---- | -------------- |
| command | [AVControlCommandType](#avcontrolcommandtype) | Yes | Command. |
......@@ -3049,6 +4297,8 @@ Describes the media metadata.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Mandatory| Description |
| --------------- |-------------------------| ---- |---------------------------------------------------------------------|
| assetId | string | Yes | Media ID. |
......@@ -3067,12 +4317,42 @@ Describes the media metadata.
| previousAssetId | string | No | ID of the previous media asset. |
| nextAssetId | string | No | ID of the next media asset. |
## AVMediaDescription<sup>10+</sup>
Describes the attributes related to the media metadata of the playlist.
**System capability**: SystemCapability.Multimedia.AVSession.Core
| Name | Type | Mandatory | Description |
| ------------ | ----------------------- | ---- | ----------------------- |
| mediaId | string | Yes | Media ID of the playlist. |
| title | string | No | Name of the playlist. |
| subtitle | string | No | Subname of the playlist. |
| description | string | No | Description of the playlist. |
| icon | image.PixelMap | No | Pixel map of the image of the playlist.|
| iconUri | string | No | Path of the image of the playlist.|
| extras | {[key: string]: any} | No | Additional fields of the playlist. |
| mediaUri | string | No | Media URI. |
## AVQueueItem<sup>10+</sup>
Describes the attributes of an item in the playlist.
**System capability**: SystemCapability.Multimedia.AVSession.Core
| Name | Type | Mandatory| Description |
| ------------ | ------------------------------------------ | ---- | --------------------------- |
| itemId | number | Yes | ID of an item in the playlist. |
| description | [AVMediaDescription](#avmediadescription10) | Yes | Media metadata of the item in the playlist. |
## AVPlaybackState
Describes the information related to the media playback state.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Mandatory| Description |
| ------------ | ------------------------------------- | ---- | ------- |
| state | [PlaybackState](#playbackstate) | No | Playback state.|
......@@ -3088,6 +4368,8 @@ Describes the information related to the playback position.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Mandatory| Description |
| ----------- | ------ | ---- | ------------------ |
| elapsedTime | number | Yes | Elapsed time, in ms.|
......@@ -3099,6 +4381,8 @@ Describes the information related to the output device.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Type | Mandatory| Description |
| ---------- | -------------- | ---- | ---------------------- |
| isRemote | boolean | Yes | Whether the device is connected. |
......@@ -3111,6 +4395,8 @@ Enumerates the media playback states.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Value | Description |
| --------------------------- | ---- | ----------- |
| PLAYBACK_STATE_INITIAL | 0 | Initial. |
......@@ -3128,6 +4414,8 @@ Enumerates the loop modes of media playback.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Value | Description |
| ------------------ | ---- | -------- |
| LOOP_MODE_SEQUENCE | 0 | Sequential playback.|
......@@ -3141,6 +4429,8 @@ Enumerates the error codes used in the media session.
**System capability**: SystemCapability.Multimedia.AVSession.Core
**System API**: This is a system API.
| Name | Value | Description |
| ------------------------------ | ------- | ------------------------------- |
| ERR_CODE_SERVICE_EXCEPTION | 6600101 | Session service exception. |
......
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