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!1684 js api and usage guide update for audio capturer and audio scene 

Merge pull request !1684 from anoop_kant/audio_scene_doc_br
上级 16180ec3 afc11367
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en/application-dev/media/audio-management.md
浏览文件 @ 340e3939
......@@ -50,6 +50,11 @@ You use audio management APIs to set and obtain volume, and get information abou
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p7530191117353"><a name="p7530191117353"></a><a name="p7530191117353"></a>Enumerates device types.</p>
</td>
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<tr id="row6530511173513"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.1 "><p id="p9530181193514"><a name="p9530181193514"></a><a name="p9530181193514"></a><a href="#audioscene">AudioScene</a></p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.2.3.1.2 "><p id="p7530191117354"><a name="p7530191117354"></a><a name="p7530191117354"></a>Enumerates audio scenes.</p>
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......@@ -74,42 +79,87 @@ You use audio management APIs to set and obtain volume, and get information abou
</tr>
<tr id="row1348213114277"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1293542863917"><a name="p1293542863917"></a><a name="p1293542863917"></a>getVolume(audioType: AudioVolumeType, callback: AsyncCallback&lt;number&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p8482201142715"><a name="p8482201142715"></a><a name="p8482201142715"></a>Obtains the volume of a stream asynchronously and uses a callback to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p8482201142715"><a name="p8482201142715"></a><a name="p8482201142715"></a>Obtains the volume of a stream asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row872195279"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1124013343392"><a name="p1124013343392"></a><a name="p1124013343392"></a>getVolume(audioType: AudioVolumeType): Promise&lt;number&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1273493271"><a name="p1273493271"></a><a name="p1273493271"></a>Obtains the volume of a stream asynchronously and uses a Promise to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1273493271"><a name="p1273493271"></a><a name="p1273493271"></a>Obtains the volume of a stream asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
<tr id="row3300184416273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p14484174015396"><a name="p14484174015396"></a><a name="p14484174015396"></a>getMinVolume(audioType: AudioVolumeType, callback: AsyncCallback&lt;number&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p130194472719"><a name="p130194472719"></a><a name="p130194472719"></a>Obtains the minimum volume of a stream asynchronously and uses a callback to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p130194472719"><a name="p130194472719"></a><a name="p130194472719"></a>Obtains the minimum volume of a stream asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row747314483273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p88551509397"><a name="p88551509397"></a><a name="p88551509397"></a>getMinVolume(audioType: AudioVolumeType): Promise&lt;number&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1747464810273"><a name="p1747464810273"></a><a name="p1747464810273"></a>Obtains the minimum volume of a stream asynchronously and uses a Promise to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1747464810273"><a name="p1747464810273"></a><a name="p1747464810273"></a>Obtains the minimum volume of a stream asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
<tr id="row9417164614274"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p147247575391"><a name="p147247575391"></a><a name="p147247575391"></a>getMaxVolume(audioType: AudioVolumeType, callback: AsyncCallback&lt;number&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1441884632714"><a name="p1441884632714"></a><a name="p1441884632714"></a>Obtains the maximum volume of a stream asynchronously and uses a callback to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1441884632714"><a name="p1441884632714"></a><a name="p1441884632714"></a>Obtains the maximum volume of a stream asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row199921350162711"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p191994474013"><a name="p191994474013"></a><a name="p191994474013"></a>getMaxVolume(audioType: AudioVolumeType): Promise&lt;number&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1999235072718"><a name="p1999235072718"></a><a name="p1999235072718"></a>Obtains the maximum volume of a stream asynchronously and uses a Promise to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p1999235072718"><a name="p1999235072718"></a><a name="p1999235072718"></a>Obtains the maximum volume of a stream asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>getDevices(deviceFlag: DeviceFlag, callback: AsyncCallback&lt;AudioDeviceDescriptors&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Obtains the device list asynchronously and uses a callback to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Obtains the device list asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row1982485992714"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1242861714408"><a name="p1242861714408"></a><a name="p1242861714408"></a>getDevices(deviceFlag: DeviceFlag): Promise&lt;AudioDeviceDescriptors&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Obtains the device list asynchronously and uses a Promise to return the execution result.</p>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Obtains the device list asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>setDeviceActive(deviceType: ActiveDeviceType, active: boolean, callback: AsyncCallback&lt;void&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Activates the device asynchronously and uses a callback to return the execution result.</p>
</td>
</tr>
<tr id="row1982485992714"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1242861714408"><a name="p1242861714408"></a><a name="p1242861714408"></a>setDeviceActive(deviceType: ActiveDeviceType, active: boolean): Promise&lt;void&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Activates the device asynchronously and uses a Promise to return the execution result.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>isDeviceActive(deviceType: ActiveDeviceType, callback: AsyncCallback&lt;boolean&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Checks whether a device is active asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row1982485992714"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1242861714408"><a name="p1242861714408"></a><a name="p1242861714408"></a>isDeviceActive(deviceType: ActiveDeviceType): Promise&lt;boolean&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Checks whether a device is active asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>on(type: 'deviceChange', callback: AsyncCallback&lt;DeviceChangeAction&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Subscribes to device change events. Registered clients will receieve the callback when a device is connected/disconnected.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>setAudioScene(scene: AudioScene, callback: AsyncCallback&lt;void&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Sets the audio scene mode asynchronously and uses a callback to return the execution result.</p>
</td>
</tr>
<tr id="row1982485992714"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1242861714408"><a name="p1242861714408"></a><a name="p1242861714408"></a>setAudioScene(scene: AudioScene): Promise&lt;void&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Sets the audio scene mode asynchronously and uses a Promise to return the execution result.</p>
</td>
</tr>
<tr id="row182815717273"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p10833698408"><a name="p10833698408"></a><a name="p10833698408"></a>getAudioScene(callback: AsyncCallback&lt;AudioScene&gt;): void</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p112818572270"><a name="p112818572270"></a><a name="p112818572270"></a>Obtains the audio scene mode asynchronously and uses a callback to return the result.</p>
</td>
</tr>
<tr id="row1982485992714"><td class="cellrowborder" valign="top" width="64.83%" headers="mcps1.2.3.1.1 "><p id="p1242861714408"><a name="p1242861714408"></a><a name="p1242861714408"></a>getAudioScene(): Promise&lt;AudioScene&gt;</p>
</td>
<td class="cellrowborder" valign="top" width="35.17%" headers="mcps1.2.3.1.2 "><p id="p16825195911278"><a name="p16825195911278"></a><a name="p16825195911278"></a>Obtains the audio scene mode asynchronously and uses a Promise to return the result.</p>
</td>
</tr>
</tbody>
......@@ -261,6 +311,18 @@ You use audio management APIs to set and obtain volume, and get information abou
</tbody>
</table>
**Table 8** AudioScene enums<a name="audioscenetable"></a>
Enumerates audio scenes.
| Name | Description |
| :----------------------------- | :---------------------------- |
| AUDIO_SCENE_DEFAULT = 0 | Default audio scene. <br/> |
| AUDIO_SCENE_RINGING = 1 | Ringing audio scene. <br/> |
| AUDIO_SCENE_PHONE_CALL = 2 | Phone call audio scene. <br/> |
| AUDIO_SCENE_VOICE_CHAT = 3 | Voice chat audio scene. <br/> |
## Development Procedure<a name="section1772415410138"></a>
1. Obtain an audio manager.
......@@ -269,7 +331,7 @@ You use audio management APIs to set and obtain volume, and get information abou
const audioManager = audio.getAudioManager();
```
2. Set the audio stream volume.
2. Obtain the audio stream volume.
```
audioManager.getVolume(audio.AudioVolumeType.MEDIA, (err, value) => {
......@@ -280,3 +342,53 @@ You use audio management APIs to set and obtain volume, and get information abou
console.log(`Media getVolume ${value}`);
});
```
## Usage <a name="usage"></a>
**setAudioScene**
**Example**
Here's an example of how to use setAudioScene to change the audio strategy for the phone call scene.
1. Obtain an audio manager.
```
const audioManager = audio.getAudioManager();
```
2. Change the audio scene to phone call.
```
audioManager.setAudioScene(audio.AudioScene.AUDIO_SCENE_PHONE_CALL, (err) => {
if (err) {
console.error('Failed to set the audio scene mode.​ ${err.message}');
return;
}
console.log('Audio scene mode setting is successful.');
});
```
**getAudioScene**
**Example**
Here's an example of how to use getAudioScene to obtain the current audio scene.
1. Obtain an audio manager.
```
const audioManager = audio.getAudioManager();
```
2. Obtain the current audio scene.
```
audioManager.getAudioScene((err, value) => {
if (err) {
console.error('Failed to obtain the audio scene mode.​ ${err.message}');
return;
}
console.log('Audio scene mode ${value)');
})
```
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