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en/application-dev/media/audio-capturer.md
浏览文件 @ 2f4036ab
......@@ -21,19 +21,28 @@ This following figure shows the audio capturer state transitions.
## Constraints
Before developing the audio data collection feature, configure the **ohos.permission.MICROPHONE** permission for your application. For details, see [Permission Application Guide](../security/accesstoken-guidelines.md).
Before developing the audio data collection feature, configure the **ohos.permission.MICROPHONE** permission for your application. For details, see [Permission Application Guide](../security/accesstoken-guidelines.md#declaring-permissions-in-the-configuration-file).
## How to Develop
For details about the APIs, see [AudioCapturer in Audio Management](../reference/apis/js-apis-audio.md#audiocapturer8).
1. Use **createAudioCapturer()** to create an **AudioCapturer** instance.
1. Use **createAudioCapturer()** to create a global **AudioCapturer** instance.
Set parameters of the **AudioCapturer** instance in **audioCapturerOptions**. This instance is used to capture audio, control and obtain the recording state, and register a callback for notification.
```js
import audio from '@ohos.multimedia.audio';
import fs from '@ohos.file.fs'; // It will be used for the call of the read function in step 3.
// Perform a self-test on APIs related to audio rendering.
@Entry
@Component
struct AudioRenderer {
@State message: string = 'Hello World'
private audioCapturer: audio.AudioCapturer; // It will be called globally.
async initAudioCapturer(){
let audioStreamInfo = {
samplingRate: audio.AudioSamplingRate.SAMPLE_RATE_44100,
channels: audio.AudioChannel.CHANNEL_1,
......@@ -51,8 +60,10 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
capturerInfo: audioCapturerInfo
}
let audioCapturer = await audio.createAudioCapturer(audioCapturerOptions);
this.audioCapturer = await audio.createAudioCapturer(audioCapturerOptions);
console.log('AudioRecLog: Create audio capturer success.');
}
```
2. Use **start()** to start audio recording.
......@@ -60,25 +71,20 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
The capturer state will be **STATE_RUNNING** once the audio capturer is started. The application can then begin reading buffers.
```js
import audio from '@ohos.multimedia.audio';
async function startCapturer() {
let state = audioCapturer.state;
async startCapturer() {
let state = this.audioCapturer.state;
// The audio capturer should be in the STATE_PREPARED, STATE_PAUSED, or STATE_STOPPED state after being started.
if (state != audio.AudioState.STATE_PREPARED || state != audio.AudioState.STATE_PAUSED ||
state != audio.AudioState.STATE_STOPPED) {
console.info('Capturer is not in a correct state to start');
return;
}
await audioCapturer.start();
state = audioCapturer.state;
if (state == audio.AudioState.STATE_PREPARED || state == audio.AudioState.STATE_PAUSED ||
state == audio.AudioState.STATE_STOPPED) {
await this.audioCapturer.start();
state = this.audioCapturer.state;
if (state == audio.AudioState.STATE_RUNNING) {
console.info('AudioRecLog: Capturer started');
} else {
console.error('AudioRecLog: Capturer start failed');
}
}
}
```
3. Read the captured audio data and convert it to a byte stream. Call **read()** repeatedly to read the data until the application stops the recording.
......@@ -86,17 +92,15 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
The following example shows how to write recorded data into a file.
```js
import fs from '@ohos.file.fs';
let state = audioCapturer.state;
async readData(){
let state = this.audioCapturer.state;
// The read operation can be performed only when the state is STATE_RUNNING.
if (state != audio.AudioState.STATE_RUNNING) {
console.info('Capturer is not in a correct state to read');
return;
}
const path = '/data/data/.pulse_dir/capture_js.wav'; // Path for storing the collected audio file.
let file = fs.openSync(filePath, 0o2);
let file = fs.openSync(path, 0o2);
let fd = file.fd;
if (file !== null) {
console.info('AudioRecLog: file created');
......@@ -104,16 +108,14 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
console.info('AudioRecLog: file create : FAILED');
return;
}
if (fd !== null) {
console.info('AudioRecLog: file fd opened in append mode');
}
let numBuffersToCapture = 150; // Write data for 150 times.
let count = 0;
while (numBuffersToCapture) {
let bufferSize = await audioCapturer.getBufferSize();
let buffer = await audioCapturer.read(bufferSize, true);
this.bufferSize = await this.audioCapturer.getBufferSize();
let buffer = await this.audioCapturer.read(this.bufferSize, true);
let options = {
offset: count * this.bufferSize,
length: this.bufferSize
......@@ -127,22 +129,23 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
numBuffersToCapture--;
count++;
}
}
```
4. Once the recording is complete, call **stop()** to stop the recording.
```js
async function StopCapturer() {
let state = audioCapturer.state;
async StopCapturer() {
let state = this.audioCapturer.state;
// The audio capturer can be stopped only when it is in STATE_RUNNING or STATE_PAUSED state.
if (state != audio.AudioState.STATE_RUNNING && state != audio.AudioState.STATE_PAUSED) {
console.info('AudioRecLog: Capturer is not running or paused');
return;
}
await audioCapturer.stop();
await this.audioCapturer.stop();
state = audioCapturer.state;
state = this.audioCapturer.state;
if (state == audio.AudioState.STATE_STOPPED) {
console.info('AudioRecLog: Capturer stopped');
} else {
......@@ -154,17 +157,17 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
5. After the task is complete, call **release()** to release related resources.
```js
async function releaseCapturer() {
let state = audioCapturer.state;
async releaseCapturer() {
let state = this.audioCapturer.state;
// The audio capturer can be released only when it is not in the STATE_RELEASED or STATE_NEW state.
if (state == audio.AudioState.STATE_RELEASED || state == audio.AudioState.STATE_NEW) {
console.info('AudioRecLog: Capturer already released');
return;
}
await audioCapturer.release();
await this.audioCapturer.release();
state = audioCapturer.state;
state = this.audioCapturer.state;
if (state == audio.AudioState.STATE_RELEASED) {
console.info('AudioRecLog: Capturer released');
} else {
......@@ -178,23 +181,20 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
You can use the following code to obtain the audio capturer information:
```js
async getAudioCapturerInfo(){
// Obtain the audio capturer state.
let state = audioCapturer.state;
let state = this.audioCapturer.state;
// Obtain the audio capturer information.
let audioCapturerInfo : audio.AuduioCapturerInfo = await audioCapturer.getCapturerInfo();
let audioCapturerInfo : audio.AudioCapturerInfo = await this.audioCapturer.getCapturerInfo();
// Obtain the audio stream information.
let audioStreamInfo : audio.AudioStreamInfo = await audioCapturer.getStreamInfo();
let audioStreamInfo : audio.AudioStreamInfo = await this.audioCapturer.getStreamInfo();
// Obtain the audio stream ID.
let audioStreamId : number = await audioCapturer.getAudioStreamId();
let audioStreamId : number = await this.audioCapturer.getAudioStreamId();
// Obtain the Unix timestamp, in nanoseconds.
let audioTime : number = await audioCapturer.getAudioTime();
let audioTime : number = await this.audioCapturer.getAudioTime();
// Obtain a proper minimum buffer size.
let bufferSize : number = await audioCapturer.getBufferSize();
let bufferSize : number = await this.audioCapturer.getBufferSize();
}
```
7. (Optional) Use **on('markReach')** to subscribe to the mark reached event, and use **off('markReach')** to unsubscribe from the event.
......@@ -202,12 +202,13 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
After the mark reached event is subscribed to, when the number of frames collected by the audio capturer reaches the specified value, a callback is triggered and the specified value is returned.
```js
audioCapturer.on('markReach', (reachNumber) => {
async markReach(){
this.audioCapturer.on('markReach', 10, (reachNumber) => {
console.info('Mark reach event Received');
console.info(`The Capturer reached frame: ${reachNumber}`);
});
audioCapturer.off('markReach'); // Unsubscribe from the mark reached event. This event will no longer be listened for.
this.audioCapturer.off('markReach'); // Unsubscribe from the mark reached event. This event will no longer be listened for.
}
```
8. (Optional) Use **on('periodReach')** to subscribe to the period reached event, and use **off('periodReach')** to unsubscribe from the event.
......@@ -215,18 +216,20 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
After the period reached event is subscribed to, each time the number of frames collected by the audio capturer reaches the specified value, a callback is triggered and the specified value is returned.
```js
audioCapturer.on('periodReach', (reachNumber) => {
async periodReach(){
this.audioCapturer.on('periodReach', 10, (reachNumber) => {
console.info('Period reach event Received');
console.info(`In this period, the Capturer reached frame: ${reachNumber}`);
});
audioCapturer.off('periodReach'); // Unsubscribe from the period reached event. This event will no longer be listened for.
this.audioCapturer.off('periodReach'); // Unsubscribe from the period reached event. This event will no longer be listened for.
}
```
9. If your application needs to perform some operations when the audio capturer state is updated, it can subscribe to the state change event. When the audio capturer state is updated, the application receives a callback containing the event type.
```js
audioCapturer.on('stateChange', (state) => {
async stateChange(){
this.audioCapturer.on('stateChange', (state) => {
console.info(`AudioCapturerLog: Changed State to : ${state}`)
switch (state) {
case audio.AudioState.STATE_PREPARED:
......@@ -251,4 +254,5 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
break;
}
});
}
```
en/application-dev/reference/apis/js-apis-audio.md
浏览文件 @ 2f4036ab
......@@ -23,9 +23,9 @@ import audio from '@ohos.multimedia.audio';
| Name | Type | Readable | Writable| Description |
| --------------------------------------- | ----------| ---- | ---- | ------------------ |
| LOCAL_NETWORK_ID<sup>9+</sup> | string | Yes | No | Network ID of the local device.<br>This is a system API.<br>**System capability**: SystemCapability.Multimedia.Audio.Device |
| DEFAULT_VOLUME_GROUP_ID<sup>9+</sup> | number | Yes | No | Default volume group ID.<br>**System capability**: SystemCapability.Multimedia.Audio.Volume |
| DEFAULT_INTERRUPT_GROUP_ID<sup>9+</sup> | number | Yes | No | Default audio interruption group ID.<br>**System capability**: SystemCapability.Multimedia.Audio.Interrupt |
| LOCAL_NETWORK_ID<sup>9+</sup> | string | Yes | No | Network ID of the local device.<br>This is a system API.<br> **System capability**: SystemCapability.Multimedia.Audio.Device |
| DEFAULT_VOLUME_GROUP_ID<sup>9+</sup> | number | Yes | No | Default volume group ID.<br> **System capability**: SystemCapability.Multimedia.Audio.Volume |
| DEFAULT_INTERRUPT_GROUP_ID<sup>9+</sup> | number | Yes | No | Default audio interruption group ID.<br> **System capability**: SystemCapability.Multimedia.Audio.Interrupt |
**Example**
......@@ -531,7 +531,7 @@ Enumerates the audio content types.
| CONTENT_TYPE_MOVIE | 3 | Movie. |
| CONTENT_TYPE_SONIFICATION | 4 | Notification tone. |
| CONTENT_TYPE_RINGTONE<sup>8+</sup> | 5 | Ringtone. |
| CONTENT_TYPE_ULTRASONIC<sup>10+</sup>| 9 | Ultrasonic.<br>This is a system API.|
## StreamUsage
Enumerates the audio stream usage.
......@@ -1789,7 +1789,7 @@ Sets a device to the active state. This API uses a promise to return the result.
| Name | Type | Mandatory| Description |
| ---------- | ------------------------------------- | ---- | ------------------ |
| deviceType | [ActiveDeviceType](#activedevicetypedeprecated) | Yes | Active audio device type. |
| deviceType | [ActiveDeviceType](#activedevicetypedeprecated) | Yes | Active audio device type.|
| active | boolean | Yes | Active state to set. The value **true** means to set the device to the active state, and **false** means the opposite. |
**Return value**
......@@ -1854,7 +1854,7 @@ Checks whether a device is active. This API uses a promise to return the result.
| Name | Type | Mandatory| Description |
| ---------- | ------------------------------------- | ---- | ------------------ |
| deviceType | [ActiveDeviceType](#activedevicetypedeprecated) | Yes | Active audio device type. |
| deviceType | [ActiveDeviceType](#activedevicetypedeprecated) | Yes | Active audio device type.|
**Return value**
......@@ -4568,15 +4568,15 @@ let filePath = path + '/StarWars10s-2C-48000-4SW.wav';
let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let stat = await fs.stat(path);
let buf = new ArrayBuffer(bufferSize);
let len = stat.size % this.bufferSize == 0 ? Math.floor(stat.size / this.bufferSize) : Math.floor(stat.size / this.bufferSize + 1);
let len = stat.size % bufferSize == 0 ? Math.floor(stat.size / bufferSize) : Math.floor(stat.size / bufferSize + 1);
for (let i = 0;i < len; i++) {
let options = {
offset: i * this.bufferSize,
length: this.bufferSize
offset: i * bufferSize,
length: bufferSize
}
let readsize = await fs.read(file.fd, buf, options)
let writeSize = await new Promise((resolve,reject)=>{
this.audioRenderer.write(buf,(err,writeSize)=>{
audioRenderer.write(buf,(err,writeSize)=>{
if(err){
reject(err)
}else{
......@@ -4621,15 +4621,15 @@ let filePath = path + '/StarWars10s-2C-48000-4SW.wav';
let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let stat = await fs.stat(path);
let buf = new ArrayBuffer(bufferSize);
let len = stat.size % this.bufferSize == 0 ? Math.floor(stat.size / this.bufferSize) : Math.floor(stat.size / this.bufferSize + 1);
let len = stat.size % bufferSize == 0 ? Math.floor(stat.size / bufferSize) : Math.floor(stat.size / bufferSize + 1);
for (let i = 0;i < len; i++) {
let options = {
offset: i * this.bufferSize,
length: this.bufferSize
offset: i * bufferSize,
length: bufferSize
}
let readsize = await fs.read(file.fd, buf, options)
try{
let writeSize = await this.audioRenderer.write(buf);
let writeSize = await audioRenderer.write(buf);
} catch(err) {
console.error(`audioRenderer.write err: ${err}`);
}
......
en/application-dev/reference/apis/js-apis-medialibrary.md
浏览文件 @ 2f4036ab
......@@ -2,7 +2,10 @@
> **NOTE**
>
> The APIs of this module are supported since API version 6. Updates will be marked with a superscript to indicate their earliest API version.
> - The APIs of this module are supported since API version 6. Updates will be marked with a superscript to indicate their earliest API version.
> - This API is deprecated since API version 9 and will be retained until API version 13.
> - Certain functionalities are changed as system APIs and can be used only by system applications. To use these functionalities, call [@ohos.filemanagement.userFileManager](js-apis-userFileManager.md).
> - The functionalities for selecting and storing media assets are still open to common applications. To use these functionalities, call [@ohos.file.picker](js-apis-file-picker.md).
## Modules to Import
```js
......@@ -131,18 +134,13 @@ async function example() {
console.info('fileAsset.displayName ' + '0 : ' + fileAsset.displayName);
// Call getNextObject to obtain the next file until the last one.
for (let i = 1; i < count; i++) {
fetchFileResult.getNextObject((error, fileAsset) => {
if (fileAsset == undefined) {
console.error('get next object failed with error: ' + error);
return;
}
let fileAsset = await fetchFileResult.getNextObject();
console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
})
}
});
// Release the FetchFileResult instance and invalidate it. Other APIs can no longer be called.
fetchFileResult.close();
});
});
}
```
......@@ -199,18 +197,15 @@ async function example() {
console.info('fileAsset.displayName ' + '0 : ' + fileAsset.displayName);
// Call getNextObject to obtain the next file until the last one.
for (let i = 1; i < count; i++) {
fetchFileResult.getNextObject().then((fileAsset) => {
let fileAsset = await fetchFileResult.getNextObject();
console.info('fileAsset.displayName ' + i + ': ' + fileAsset.displayName);
}).catch((error) => {
console.error('get next object failed with error: ' + error);
})
}
// Release the FetchFileResult instance and invalidate it. Other APIs can no longer be called.
fetchFileResult.close();
}).catch((error) => {
// Calling getFirstObject fails.
console.error('get first object failed with error: ' + error);
});
// Release the FetchFileResult instance and invalidate it. Other APIs can no longer be called.
fetchFileResult.close();
}).catch((error) => {
// Calling getFileAssets fails.
console.error('get file assets failed with error: ' + error);
......@@ -500,7 +495,7 @@ async function example() {
### getAlbums<sup>7+</sup>
getAlbums(options: MediaFetchOptions, callback: AsyncCallback<Array&lt;Album&gt;>): void
getAlbums(options: MediaFetchOptions, callback: AsyncCallback&lt;Array&lt;Album&gt;&gt;): void
Obtains the albums. This API uses an asynchronous callback to return the result.
......@@ -535,7 +530,7 @@ async function example() {
### getAlbums<sup>7+</sup>
getAlbums(options: MediaFetchOptions): Promise<Array&lt;Album&gt;>
getAlbums(options: MediaFetchOptions): Promise&lt;Array&lt;Album&gt;&gt;
Obtains the albums. This API uses a promise to return the result.
......@@ -615,7 +610,7 @@ Call this API when you no longer need to use the APIs in the **MediaLibrary** in
media.release()
```
### storeMediaAsset<sup>(deprecated)</sup>
### storeMediaAsset
storeMediaAsset(option: MediaAssetOption, callback: AsyncCallback&lt;string&gt;): void
......@@ -623,7 +618,7 @@ Stores a media asset. This API uses an asynchronous callback to return the URI t
> **NOTE**
>
> This API is deprecated since API version 9.
> This API is supported since API version 6 and can be used only by the FA model.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -653,7 +648,7 @@ mediaLibrary.getMediaLibrary().storeMediaAsset(option, (error, value) => {
```
### storeMediaAsset<sup>(deprecated)</sup>
### storeMediaAsset
storeMediaAsset(option: MediaAssetOption): Promise&lt;string&gt;
......@@ -661,7 +656,7 @@ Stores a media asset. This API uses a promise to return the URI that stores the
> **NOTE**
>
> This API is deprecated since API version 9.
> This API is supported since API version 6 and can be used only by the FA model.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -694,15 +689,15 @@ mediaLibrary.getMediaLibrary().storeMediaAsset(option).then((value) => {
```
### startImagePreview<sup>(deprecated)</sup>
### startImagePreview
startImagePreview(images: Array&lt;string&gt;, index: number, callback: AsyncCallback&lt;void&gt;): void
Starts image preview, with the first image to preview specified. This API can be used to preview local images whose URIs start with **datashare://** or online images whose URIs start with **https://**. It uses an asynchronous callback to return the execution result.
> **NOTE**
>
> This API is deprecated since API version 9. You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
> This API is supported since API version 6 and can be used only by the FA model.
> You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -738,15 +733,15 @@ mediaLibrary.getMediaLibrary().startImagePreview(images, index, (error) => {
```
### startImagePreview<sup>(deprecated)</sup>
### startImagePreview
startImagePreview(images: Array&lt;string&gt;, callback: AsyncCallback&lt;void&gt;): void
Starts image preview. This API can be used to preview local images whose URIs start with **datashare://** or online images whose URIs start with **https://**. It uses an asynchronous callback to return the execution result.
> **NOTE**
>
> This API is deprecated since API version 9. You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
> This API is supported since API version 6 and can be used only by the FA model.
> You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -780,15 +775,15 @@ mediaLibrary.getMediaLibrary().startImagePreview(images, (error) => {
```
### startImagePreview<sup>(deprecated)</sup>
### startImagePreview
startImagePreview(images: Array&lt;string&gt;, index?: number): Promise&lt;void&gt;
Starts image preview, with the first image to preview specified. This API can be used to preview local images whose URIs start with **datashare://** or online images whose URIs start with **https://**. It uses a promise to return the execution result.
> **NOTE**
>
> This API is deprecated since API version 9. You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
> This API is supported since API version 6 and can be used only by the FA model.
> You are advised to use the **\<[Image](../arkui-ts/ts-basic-components-image.md)>** component instead. The **\<Image>** component can be used to render and display local and online images.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -827,15 +822,15 @@ mediaLibrary.getMediaLibrary().startImagePreview(images, index).then(() => {
```
### startMediaSelect<sup>(deprecated)</sup>
### startMediaSelect
startMediaSelect(option: MediaSelectOption, callback: AsyncCallback&lt;Array&lt;string&gt;&gt;): void
Starts media selection. This API uses an asynchronous callback to return the list of URIs that store the selected media assets.
> **NOTE**
>
> This API is deprecated since API version 9. You are advised to use the system app Gallery instead. Gallery is a built-in visual resource access application that provides features such as image and video management and browsing. For details about how to use Gallery, visit [OpenHarmony/applications_photos](https://gitee.com/openharmony/applications_photos).
> This API is supported since API version 6 and can be used only by the FA model.
> You are advised to use the system app Gallery instead. Gallery is a built-in visual resource access application that provides features such as image and video management and browsing. For details about how to use Gallery, visit [OpenHarmony/applications_photos](https://gitee.com/openharmony/applications_photos).
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -843,7 +838,7 @@ Starts media selection. This API uses an asynchronous callback to return the lis
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------------------------ |
| option | [MediaSelectOption](#mediaselectoptiondeprecated) | Yes | Media selection option. |
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option. |
| callback | AsyncCallback&lt;Array&lt;string&gt;&gt; | Yes | Callback used to return the list of URIs (starting with **datashare://**) that store the selected media assets.|
**Example**
......@@ -864,15 +859,15 @@ mediaLibrary.getMediaLibrary().startMediaSelect(option, (error, value) => {
```
### startMediaSelect<sup>(deprecated)</sup>
### startMediaSelect
startMediaSelect(option: MediaSelectOption): Promise&lt;Array&lt;string&gt;&gt;
Starts media selection. This API uses a promise to return the list of URIs that store the selected media assets.
> **NOTE**
>
> This API is deprecated since API version 9. You are advised to use the system app Gallery instead. Gallery is a built-in visual resource access application that provides features such as image and video management and browsing. For details about how to use Gallery, visit [OpenHarmony/applications_photos](https://gitee.com/openharmony/applications_photos).
> This API is supported since API version 6 and can be used only by the FA model.
> You are advised to use the system app Gallery instead. Gallery is a built-in visual resource access application that provides features such as image and video management and browsing. For details about how to use Gallery, visit [OpenHarmony/applications_photos](https://gitee.com/openharmony/applications_photos).
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -880,7 +875,7 @@ Starts media selection. This API uses a promise to return the list of URIs that
| Name | Type | Mandatory | Description |
| ------ | --------------------------------------- | ---- | ------- |
| option | [MediaSelectOption](#mediaselectoptiondeprecated) | Yes | Media selection option.|
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option.|
**Return value**
......@@ -1041,7 +1036,6 @@ async function example() {
Provides APIs for encapsulating file asset attributes.
> **NOTE**
>
> 1. The system attempts to parse the file content if the file is an audio or video file. The actual field values will be restored from the passed values during scanning on some devices.
> 2. Some devices may not support the modification of **orientation**. You are advised to use [ModifyImageProperty](js-apis-image.md#modifyimageproperty9) of the **image** module.
......@@ -1923,9 +1917,9 @@ async function example() {
if(i == fetchCount - 1) {
var result = fetchFileResult.isAfterLast();
console.info('mediaLibrary fileAsset isAfterLast result: ' + result);
fetchFileResult.close();
}
}
fetchFileResult.close();
}
```
......@@ -1985,8 +1979,8 @@ async function example() {
return;
}
console.info('getFirstObject successfully, displayName : ' + fileAsset.displayName);
})
fetchFileResult.close();
})
}
```
......@@ -2018,10 +2012,10 @@ async function example() {
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getFirstObject().then((fileAsset) => {
console.info('getFirstObject successfully, displayName: ' + fileAsset.displayName);
fetchFileResult.close();
}).catch((error) => {
console.error('getFirstObject failed with error: ' + error);
});
fetchFileResult.close();
}
```
......@@ -2055,16 +2049,16 @@ async function example() {
};
let fetchFileResult = await media.getFileAssets(getImageOp);
let fileAsset = await fetchFileResult.getFirstObject();
if (! fetchFileResult.isAfterLast) {
if (!fileAsset.isAfterLast) {
fetchFileResult.getNextObject((error, fileAsset) => {
if (error) {
console.error('fetchFileResult getNextObject failed with error: ' + error);
return;
}
console.log('fetchFileResult getNextObject successfully, displayName: ' + fileAsset.displayName);
fetchFileResult.close();
})
}
fetchFileResult.close();
}
```
......@@ -2099,14 +2093,14 @@ async function example() {
};
let fetchFileResult = await media.getFileAssets(getImageOp);
let fileAsset = await fetchFileResult.getFirstObject();
if (! fetchFileResult.isAfterLast) {
if (!fileAsset.isAfterLast) {
fetchFileResult.getNextObject().then((fileAsset) => {
console.info('fetchFileResult getNextObject successfully, displayName: ' + fileAsset.displayName);
fetchFileResult.close();
}).catch((error) => {
console.error('fetchFileResult getNextObject failed with error: ' + error);
})
}
fetchFileResult.close();
}
```
......@@ -2142,8 +2136,8 @@ async function example() {
return;
}
console.info('getLastObject successfully, displayName: ' + fileAsset.displayName);
})
fetchFileResult.close();
})
}
```
......@@ -2175,10 +2169,10 @@ async function example() {
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getLastObject().then((fileAsset) => {
console.info('getLastObject successfully, displayName: ' + fileAsset.displayName);
fetchFileResult.close();
}).catch((error) => {
console.error('getLastObject failed with error: ' + error);
});
fetchFileResult.close();
}
```
......@@ -2215,8 +2209,8 @@ async function example() {
return;
}
console.info('getPositionObject successfully, displayName: ' + fileAsset.displayName);
})
fetchFileResult.close();
})
}
```
......@@ -2254,10 +2248,10 @@ async function example() {
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getPositionObject(0).then((fileAsset) => {
console.info('getPositionObject successfully, displayName: ' + fileAsset.displayName);
fetchFileResult.close();
}).catch((error) => {
console.error('getPositionObject failed with error: ' + error);
});
fetchFileResult.close();
}
```
......@@ -2295,8 +2289,8 @@ async function example() {
for (let i = 0; i < fetchFileResult.getCount(); i++) {
console.info('getAllObject fileAssetList ' + i + ' displayName: ' + fileAssetList[i].displayName);
}
})
fetchFileResult.close();
})
}
```
......@@ -2330,10 +2324,10 @@ async function example() {
for (let i = 0; i < fetchFileResult.getCount(); i++) {
console.info('getAllObject fileAssetList ' + i + ' displayName: ' + fileAssetList[i].displayName);
}
fetchFileResult.close();
}).catch((error) => {
console.error('getAllObject failed with error: ' + error);
});
fetchFileResult.close();
}
```
......@@ -2465,10 +2459,10 @@ async function example() {
console.error('album getFileAssets failed with error: ' + error);
return;
}
let count = fetchFileResult.getcount();
let count = fetchFileResult.getCount();
console.info('album getFileAssets successfully, count: ' + count);
});
fetchFileResult.close();
});
}
```
......@@ -2510,13 +2504,13 @@ async function example() {
const albumList = await media.getAlbums(AlbumNoArgsfetchOp);
const album = albumList[0];
// Obtain an album from the album list and obtain all media assets that meet the retrieval options in the album.
album.getFileAssets(fileNoArgsfetchOp).then((albumFetchFileResult) => {
let count = fetchFileResult.getcount();
album.getFileAssets(fileNoArgsfetchOp).then((fetchFileResult) => {
let count = fetchFileResult.getCount();
console.info('album getFileAssets successfully, count: ' + count);
fetchFileResult.close();
}).catch((error) => {
console.error('album getFileAssets failed with error: ' + error);
});
fetchFileResult.close();
}
```
......@@ -2555,7 +2549,6 @@ Enumerates media types.
Enumerates key file information.
> **NOTE**
>
> The **bucket_id** field may change after file rename or movement. Therefore, you must obtain the field again before using it.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -2641,14 +2634,10 @@ Describes the image size.
| width | number | Yes | Yes | Image width, in pixels.|
| height | number | Yes | Yes | Image height, in pixels.|
## MediaAssetOption<sup>(deprecated)</sup>
## MediaAssetOption
Implements the media asset option.
> **NOTE**
>
> This API is deprecated since API version 9.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
......@@ -2658,17 +2647,13 @@ Implements the media asset option.
| mimeType | string | Yes | Yes | Multipurpose Internet Mail Extensions (MIME) type of the media.<br>The value can be 'image/\*', 'video/\*', 'audio/\*' or 'file\*'.|
| relativePath | string | Yes | Yes | Custom path for storing media assets, for example, 'Pictures/'. If this parameter is unspecified, media assets are stored in the default path.<br> Default path of images: 'Pictures/'<br> Default path of videos: 'Videos/'<br> Default path of audios: 'Audios/'<br> Default path of files: 'Documents/'|
## MediaSelectOption<sup>(deprecated)</sup>
## MediaSelectOption
Describes media selection option.
> **NOTE**
>
> This API is deprecated since API version 9.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Readable| Writable| Description |
| ----- | ------ | ---- | ---- | -------------------- |
| type | 'image' &#124; 'video' &#124; 'media' | Yes | Yes | Media type, which can be **image**, **media**, or **video**. Currently, only **media** is supported.|
| count | number | Yes | Yes | Number of media assets selected. The value starts from 1, which indicates that one media asset can be selected. |
| count | number | Yes | Yes | Maximum number of media assets that can be selected. The value starts from 1, which indicates that one media asset can be selected. |
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