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未验证 提交 d0caf1d8 编写于 作者: O openharmony_ci 提交者： Gitee
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!3953 翻译完成：3383 音频播放demo修改 

Merge pull request !3953 from wusongqing/TR3383
上级 58c5a74c 4dfcd48e
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en/application-dev/media/audio-playback.md
浏览文件 @ d0caf1d8
...@@ -22,32 +22,43 @@ For details about the APIs, see [AudioPlayer in the Media API](../reference/apis ...@@ -22,32 +22,43 @@ For details about the APIs, see [AudioPlayer in the Media API](../reference/apis
The full audio playback process includes creating an instance, setting the URI, playing audio, seeking to the playback position, setting the volume, pausing playback, obtaining track information, stopping playback, resetting the player, and releasing resources. The full audio playback process includes creating an instance, setting the URI, playing audio, seeking to the playback position, setting the volume, pausing playback, obtaining track information, stopping playback, resetting the player, and releasing resources.
For details about the **src** media source input types supported by **AudioPlayer**, see the [src attribute](../reference/apis/js-apis-media.md#audioplayer_attributes). For details about the **src** types supported by **AudioPlayer**, see the [src attribute](../reference/apis/js-apis-media.md#audioplayer_attributes).
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio' import fileIO from '@ohos.fileio'
function SetCallBack(audioPlayer) { // Print the stream track information.
function printfDescription(obj) {
for (let item in obj) {
let property = obj[item];
console.info('audio key is ' + item);
console.info('audio value is ' + property);
}
}
// Set the player callbacks.
function setCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully. audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully.
console.info('audio set source success'); console.info('audio set source success');
// The playback page is ready. You can click the Play button to start the playback. audioPlayer.play(); // The play() API can be invoked only after the 'dataLoad' event callback is complete. The 'play' event callback is then triggered.
}); });
audioPlayer.on('play', () => { // Set the 'play' event callback. audioPlayer.on('play', () => { // Set the 'play' event callback.
console.info('audio play success'); console.info('audio play success');
// The Play button is changed to the pausable state. audioPlayer.pause(); // Trigger the 'pause' event callback and pause the playback.
}); });
audioPlayer.on('pause', () => { // Set the 'pause' event callback. audioPlayer.on('pause', () => { // Set the 'pause' event callback.
console.info('audio pause success'); console.info('audio pause success');
// The Play button is changed to the playable state. audioPlayer.seek(5000); // Trigger the 'timeUpdate' event callback, and seek to 5000 ms for playback.
}); });
audioPlayer.on('stop', () => { // Set the 'stop' event callback. audioPlayer.on('stop', () => { // Set the 'stop' event callback.
console.info('audio stop success'); console.info('audio stop success');
// The playback stops, the playback progress bar returns to 0, and the Play button is changed to the playable state. audioPlayer.reset(); // Trigger the 'reset' event callback, and reconfigure the src attribute to switch to the next song.
}); });
audioPlayer.on('reset', () => { // Set the 'reset' event callback. audioPlayer.on('reset', () => { // Set the 'reset' event callback.
console.info('audio reset success'); console.info('audio reset success');
// You can reconfigure the src attribute to play another audio file. audioPlayer.release(); // Release the AudioPlayer resources.
audioPlayer = undefined;
}); });
audioPlayer.on('timeUpdate', (seekDoneTime) => {// Set the 'timeUpdate' event callback. audioPlayer.on('timeUpdate', (seekDoneTime) => {// Set the 'timeUpdate' event callback.
if (typeof(seekDoneTime) == 'undefined') { if (typeof(seekDoneTime) == 'undefined') {
...@@ -55,11 +66,20 @@ function SetCallBack(audioPlayer) { ...@@ -55,11 +66,20 @@ function SetCallBack(audioPlayer) {
return; return;
} }
console.info('audio seek success, and seek time is ' + seekDoneTime); console.info('audio seek success, and seek time is ' + seekDoneTime);
// The playback progress bar is updated to the seek position. audioPlayer.setVolume(0.5); // Trigger the 'volumeChange' event callback.
}); });
audioPlayer.on('volumeChange', () => { // Set the 'volumeChange' event callback. audioPlayer.on('volumeChange', () => { // Set the 'volumeChange' event callback.
console.info('audio volumeChange success'); console.info('audio volumeChange success');
// Display the updated volume. audioPlayer.getTrackDescription((error, arrlist) => { // Obtain the audio track information in callback mode.
if (typeof (arrlist) != 'undefined') {
for (let i = 0; i < arrlist.length; i++) {
printfDescription(arrlist[i]);
}
} else {
console.log(`audio getTrackDescription fail, error:${error.message}`);
}
audioPlayer.stop(); // Trigger the 'stop' event callback to stop the playback.
});
}); });
audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete. audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete.
console.info('audio play finish'); console.info('audio play finish');
...@@ -71,56 +91,24 @@ function SetCallBack(audioPlayer) { ...@@ -71,56 +91,24 @@ function SetCallBack(audioPlayer) {
}); });
} }
function printfDescription(obj) { async function audioPlayerDemo() {
for (let item in obj) { // 1. Create an audioPlayer instance.
let property = obj[item]; let audioPlayer = media.createAudioPlayer();
console.info('audio key is ' + item); setCallBack(audioPlayer); // Set the event callbacks.
console.info('audio value is ' + property); // 2. Set the URI of the audio file selected by the user.
} let fdPath = 'fd://'
} // The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile/01.mp3';
// 1. Create an audioPlayer instance. await fileIO.open(path).then((fdNumber) => {
let audioPlayer = media.createAudioPlayer();
SetCallBack(audioPlayer); // Set the event callbacks.
// 2. Set the URI of the audio file selected by the user.
let fdPath = 'fd://'
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/accounts/account_0/appdata" command.
let path = '/data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(path).then(fdNumber) => {
fdPath = fdPath + '' + fdNumber; fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath); console.info('open fd sucess fd is' + fdPath);
}, (err) => { }, (err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}),catch((err) => { }).catch((err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}); });
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback. }
// 3. Play the audio file.
audioPlayer.play(); // The play() API can be invoked only after the 'dataLoad' event callback is complete. The 'play' event callback is triggered.
// 4. Seek to the playback position.
audioPlayer.seek(30000); // Trigger the 'timeUpdate' event callback, and seek to 30000 ms for playback.
// 5. Set the volume.
audioPlayer.setVolume(0.5); // Trigger the 'volumeChange' event callback.
// 6. Pause the playback.
audioPlayer.pause(); // Trigger the 'pause' event callback and pause the playback.
// 7. Obtain the track information.
audioPlayer.getTrackDescription((error, arrlist) => { // Obtain the audio track information in callback mode.
if (typeof (arrlist) != 'undefined') {
for (let i = 0; i < arrlist.length; i++) {
printfDescription(arrlist[i]);
}
} else {
console.log(`audio getTrackDescription fail, error:${error.message}`);
}
});
// 8. Stop the playback.
audioPlayer.stop(); // Trigger the 'stop' event callback.
// 9. Reset the player.
audioPlayer.reset(); // Trigger the 'reset' event callback, and reconfigure the src attribute to switch to the next song.
// 10. Release the resource.
audioPlayer.release(); // Release the AudioPlayer instance.
audioPlayer = undefined;
``` ```
### Normal Playback Scenario ### Normal Playback Scenario
...@@ -128,8 +116,9 @@ audioPlayer = undefined; ...@@ -128,8 +116,9 @@ audioPlayer = undefined;
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio' import fileIO from '@ohos.fileio'
export class AudioDemo {
function SetCallBack(audioPlayer) { // Set the player callbacks.
setCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully. audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully.
console.info('audio set source success'); console.info('audio set source success');
audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback. audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback.
...@@ -139,27 +128,28 @@ function SetCallBack(audioPlayer) { ...@@ -139,27 +128,28 @@ function SetCallBack(audioPlayer) {
}); });
audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete. audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete.
console.info('audio play finish'); console.info('audio play finish');
audioPlayer.release(); // Release the AudioPlayer instance. audioPlayer.release(); // Release the AudioPlayer resources.
audioPlayer = undefined; audioPlayer = undefined;
}); });
} }
let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance. async audioPlayerDemo() {
SetCallBack(audioPlayer); // Set the event callbacks. let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance.
/* Set the FD (local playback) of the audio file selected by the user. */ this.setCallBack(audioPlayer); // Set the event callbacks.
let fdPath = 'fd://' let fdPath = 'fd://'
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/accounts/account_0/appdata" command. // The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile" command.
let path = '/data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3'; let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile/01.mp3';
await fileIO.open(path).then(fdNumber) => { await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber; fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath); console.info('open fd sucess fd is' + fdPath);
}, (err) => { }, (err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}),catch((err) => { }).catch((err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}); });
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback. }
}
``` ```
### Switching to the Next Song ### Switching to the Next Song
...@@ -167,54 +157,62 @@ audioPlayer.src = fdPath; // Set the src attribute and ...@@ -167,54 +157,62 @@ audioPlayer.src = fdPath; // Set the src attribute and
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio' import fileIO from '@ohos.fileio'
export class AudioDemo {
function SetCallBack(audioPlayer) { // Set the player callbacks.
private isNextMusic = false;
setCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully. audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully.
console.info('audio set source success'); console.info('audio set source success');
audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback. audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback.
}); });
audioPlayer.on('play', () => { // Set the 'play' event callback. audioPlayer.on('play', () => { // Set the 'play' event callback.
console.info('audio play success'); console.info('audio play success');
audioPlayer.reset(); // Call the reset() API and trigger the 'reset' event callback.
}); });
audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete. audioPlayer.on('reset', () => { // Set the 'reset' event callback.
console.info('audio play finish'); console.info('audio play success');
if (!this.isNextMusic) { // When isNextMusic is false, changing songs is implemented.
this.nextMusic(audioPlayer); // Changing songs is implemented.
} else {
audioPlayer.release(); // Release the AudioPlayer instance. audioPlayer.release(); // Release the AudioPlayer instance.
audioPlayer = undefined; audioPlayer = undefined;
}
}); });
} }
let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance. async nextMusic(audioPlayer) {
SetCallBack(audioPlayer); // Set the event callbacks. this.isNextMusic = true;
/* Set the FD (local playback) of the audio file selected by the user. */ let nextFdPath = 'fd://'
let fdPath = 'fd://' // The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\02.mp3 /data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile" command.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/accounts/account_0/appdata" command. let nextpath = '/data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile/02.mp3';
let path = '/data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3'; await fileIO.open(nextpath).then((fdNumber) => {
await fileIO.open(path).then(fdNumber) => { nextFdPath = nextFdPath + '' + fdNumber;
fdPath = fdPath + '' + fdNumber; console.info('open fd sucess fd is' + nextFdPath);
console.info('open fd sucess fd is' + fdPath); }, (err) => {
}, (err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}),catch((err) => { }).catch((err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}); });
audioPlayer.src = nextFdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback. }
/* Send the instruction to switch to the next song after a period of time. */
audioPlayer.reset();
/* Set the FD (local playback) of the audio file selected by the user. */ async audioPlayerDemo() {
let fdNextPath = 'fd://' let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\02.mp3 /data/accounts/account_0/appdata" command. this.setCallBack(audioPlayer); // Set the event callbacks.
let nextPath = '/data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/02.mp3'; let fdPath = 'fd://'
await fileIO.open(nextPath).then(fdNumber) => { // The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile" command.
fdNextPath = fdNextPath + '' + fdNumber; let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile/01.mp3';
console.info('open fd sucess fd is' + fdNextPath); await fileIO.open(path).then((fdNumber) => {
}, (err) => { fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}),catch((err) => { }).catch((err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}); });
audioPlayer.src = fdNextPath; audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
}
``` ```
### Looping a Song ### Looping a Song
...@@ -222,40 +220,36 @@ audioPlayer.src = fdNextPath; ...@@ -222,40 +220,36 @@ audioPlayer.src = fdNextPath;
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio' import fileIO from '@ohos.fileio'
export class AudioDemo {
function SetCallBack(audioPlayer) { // Set the player callbacks.
setCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully. audioPlayer.on('dataLoad', () => { // Set the 'dataLoad' event callback, which is triggered when the src attribute is set successfully.
console.info('audio set source success'); console.info('audio set source success');
audioPlayer.loop = true; // Set the loop playback attribute.
audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback. audioPlayer.play(); // Call the play() API to start the playback and trigger the 'play' event callback.
}); });
audioPlayer.on('play', () => { // Set the 'play' event callback. audioPlayer.on('play', () => { // Sets the 'play' event callback to start loop playback.
console.info('audio play success'); console.info('audio play success');
}); });
audioPlayer.on('finish', () => { // Set the 'finish' event callback, which is triggered when the playback is complete. }
console.info('audio play finish');
audioPlayer.release(); // Release the AudioPlayer instance.
audioPlayer = undefined;
});
}
let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance.
SetCallBack(audioPlayer); // Set the event callbacks.
/* Set the FD (local playback) of the audio file selected by the user. */ async audioPlayerDemo() {
let fdPath = 'fd://' let audioPlayer = media.createAudioPlayer(); // Create an AudioPlayer instance.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/accounts/account_0/appdata" command. this.setCallBack(audioPlayer); // Set the event callbacks.
let path = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3'; let fdPath = 'fd://'
await fileIO.open(path).then(fdNumber) => { // The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.audio.audioplayer/ohos.acts.multimedia.audio.audioplayer/assets/entry/resources/rawfile/01.mp3';
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber; fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath); console.info('open fd sucess fd is' + fdPath);
}, (err) => { }, (err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}),catch((err) => { }).catch((err) => {
console.info('open fd failed err is' + err); console.info('open fd failed err is' + err);
}); });
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback. }
audioPlayer.loop = true; // Set the loop playback attribute. }
``` ```
## Samples ## Samples
...@@ -263,7 +257,6 @@ audioPlayer.loop = true; // Set the loop playback att ...@@ -263,7 +257,6 @@ audioPlayer.loop = true; // Set the loop playback att
The following samples are provided to help you better understand how to develop audio playback: The following samples are provided to help you better understand how to develop audio playback:
- [`JsDistributedMusicPlayer`: Distributed Music Player (JS) (API7)](https://gitee.com/openharmony/app_samples/tree/master/ability/JsDistributedMusicPlayer) - [`JsDistributedMusicPlayer`: Distributed Music Player (JS) (API7)](https://gitee.com/openharmony/app_samples/tree/master/ability/JsDistributedMusicPlayer)
- [`JsAudioPlayer`: Audio Playback and Management (JS, API 7)](https://gitee.com/openharmony/app_samples/tree/master/media/JsAudioPlayer)
- [`JsAudioPlayer`: Audio Playback and Management (JS) (API7)](https://gitee.com/openharmony/app_samples/tree/master/media/JsAudioPlayer) - [`eTsAudioPlayer`: Audio Player (eTS)](https://gitee.com/openharmony/app_samples/blob/master/media/Recorder/entry/src/main/ets/MainAbility/pages/Play.ets)
- [Audio Player](https://gitee.com/openharmony/codelabs/tree/master/Media/Audio_OH_ETS) - [Audio Player](https://gitee.com/openharmony/codelabs/tree/master/Media/Audio_OH_ETS)
en/application-dev/media/audio-recorder.md
浏览文件 @ d0caf1d8
...@@ -25,46 +25,49 @@ The full audio recording process includes creating an instance, setting recordin ...@@ -25,46 +25,49 @@ The full audio recording process includes creating an instance, setting recordin
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import mediaLibrary from '@ohos.multimedia.mediaLibrary' import mediaLibrary from '@ohos.multimedia.mediaLibrary'
export class AudioRecorderDemo {
private testFdNumber; // Used to save the FD address.
let testFdNumber; // Set the callbacks related to audio recording.
setCallBack(audioRecorder) {
function SetCallBack(audioRecorder) {
audioRecorder.on('prepare', () => { // Set the 'prepare' event callback. audioRecorder.on('prepare', () => { // Set the 'prepare' event callback.
console.log('prepare success'); console.log('prepare success');
// The recording page is ready. You can click the Record button to start recording. audioRecorder.start(); // Call the start API to start recording and trigger the 'start' event callback.
}); });
audioRecorder.on('start', () => { // Set the 'start' event callback. audioRecorder.on('start', () => { // Set the 'start' event callback.
console.log('audio recorder start success'); console.log('audio recorder start success');
// The Record button is changed to the pausable state. audioRecorder.pause(); // Call the pause API to pause recording and trigger the 'pause' event callback.
}); });
audioRecorder.on('pause', () => { // Set the 'pause' event callback. audioRecorder.on('pause', () => { // Set the 'pause' event callback.
console.log('audio recorder pause success'); console.log('audio recorder pause success');
// The Record button is changed to the recordable state. audioRecorder.resume(); // Call the resume API to resume recording and trigger the 'resume' event callback.
}); });
audioRecorder.on('resume', () => { // Set the 'resume' event callback. audioRecorder.on('resume', () => { // Set the 'resume' event callback.
console.log('audio recorder resume success'); console.log('audio recorder resume success');
// The Record button is changed to the pausable state. audioRecorder.stop(); // Call the stop API to stop recording and trigger the 'stop' event callback.
}); });
audioRecorder.on('stop', () => { // Set the 'stop' event callback. audioRecorder.on('stop', () => { // Set the 'stop' event callback.
console.log('audio recorder stop success'); console.log('audio recorder stop success');
}); audioRecorder.reset(); // Call the reset API to reset the recorder and trigger the 'reset' event callback.
audioRecorder.on('release', () => { // Set the 'release' event callback.
console.log('audio recorder release success');
}); });
audioRecorder.on('reset', () => { // Set the 'reset' event callback. audioRecorder.on('reset', () => { // Set the 'reset' event callback.
console.log('audio recorder reset success'); console.log('audio recorder reset success');
// You need to reset the recording parameters for another recording. audioRecorder.release(); // Call the release API to release resources and trigger the 'release' event callback.
});
audioRecorder.on('release', () => { // Set the 'release' event callback.
console.log('audio recorder release success');
audioRecorder = undefined;
}); });
audioRecorder.on('error', (error) => { // Set the 'error' event callback. audioRecorder.on('error', (error) => { // Set the 'error' event callback.
console.info(`audio error called, errName is ${error.name}`); console.info(`audio error called, errName is ${error.name}`);
console.info(`audio error called, errCode is ${error.code}`); console.info(`audio error called, errCode is ${error.code}`);
console.info(`audio error called, errMessage is ${error.message}`); console.info(`audio error called, errMessage is ${error.message}`);
}); });
} }
// pathName indicates the passed recording file name, for example, 01.mp3. The generated file address is /storage/media/100/local/files/Movies/01.mp3. // pathName indicates the passed recording file name, for example, 01.mp3. The generated file address is /storage/media/100/local/files/Video/01.mp3.
// To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA. // To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA.
async function getFd(pathName) { async getFd(pathName) {
let displayName = pathName; let displayName = pathName;
const mediaTest = mediaLibrary.getMediaLibrary(); const mediaTest = mediaLibrary.getMediaLibrary();
let fileKeyObj = mediaLibrary.FileKey; let fileKeyObj = mediaLibrary.FileKey;
...@@ -80,41 +83,29 @@ async function getFd(pathName) { ...@@ -80,41 +83,29 @@ async function getFd(pathName) {
let fetchFileResult = await mediaTest.getFileAssets(fetchOp); let fetchFileResult = await mediaTest.getFileAssets(fetchOp);
let fileAsset = await fetchFileResult.getAllObject(); let fileAsset = await fetchFileResult.getAllObject();
let fdNumber = await fileAsset[0].open('Rw'); let fdNumber = await fileAsset[0].open('Rw');
fdNumber = "fd://" + fdNumber.toString(); this.testFdNumber = "fd://" + fdNumber.toString();
testFdNumber = fdNumber; }
} }
}
await getFd('01.mp3');
// 1. Create an AudioRecorder instance. async audioRecorderDemo() {
let audioRecorder = media.createAudioRecorder(); // 1. Create an AudioRecorder instance.
// 2. Set the callbacks. let audioRecorder = media.createAudioRecorder();
SetCallBack(audioRecorder); // 2. Set the callbacks.
// 3. Set the recording parameters. this.setCallBack(audioRecorder);
let audioRecorderConfig = { await this.getFd('01.mp3'); // Call the getFd method to obtain the FD address of the file to be recorded.
audioEncoder : media.AudioEncoder.AAC_LC , // 3. Set the recording parameters.
let audioRecorderConfig = {
audioEncodeBitRate : 22050, audioEncodeBitRate : 22050,
audioSampleRate : 22050, audioSampleRate : 22050,
numberOfChannels : 2, numberOfChannels : 2,
format : media.AudioOutputFormat.AAC_ADTS, uri : this.testFdNumber, // testFdNumber is generated by getFd.
uri : testFdNumber, // testFdNumber is generated by getFd.
location : { latitude : 30, longitude : 130}, location : { latitude : 30, longitude : 130},
audioEncoderMime : media.CodecMimeType.AUDIO_AAC,
fileFormat : media.ContainerFormatType.CFT_MPEG_4A,
}
audioRecorder.prepare(audioRecorderConfig); // Call the prepare method to trigger the 'prepare' event callback.
}
} }
audioRecorder.prepare(audioRecorderConfig);
// 4. Start recording.
audioRecorder.start(); // The start API can be called to trigger the 'start' event callback only after the 'prepare' event callback is complete.
// 5. Pause recording.
audioRecorder.pause(); // The pause API can be called to trigger the 'pause' event callback only after the 'start' event callback is complete.
// 6. Resume recording.
audioRecorder.resume(); // The resume API can be called to trigger the 'resume' event callback only after the 'pause' event callback is complete.
// 7. Stop recording.
audioRecorder.stop(); // The stop API can be called to trigger the 'stop' event callback only after the 'start' or 'resume' event callback is complete.
// 8. Reset recording.
audioRecorder.reset(); // The prepare API can be called for another recording only after the 'reset' event callback is complete.
// 9. Release resources.
audioRecorder.release(); // The AudioRecorder resource is destroyed.
audioRecorder = undefined;
``` ```
### Normal Recording Scenario ### Normal Recording Scenario
...@@ -124,29 +115,37 @@ Unlike the full-process scenario, the normal recording scenario does not include ...@@ -124,29 +115,37 @@ Unlike the full-process scenario, the normal recording scenario does not include
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import mediaLibrary from '@ohos.multimedia.mediaLibrary' import mediaLibrary from '@ohos.multimedia.mediaLibrary'
export class AudioRecorderDemo {
private testFdNumber; // Used to save the FD address.
let testFdNumber; // Set the callbacks related to audio recording.
setCallBack(audioRecorder) {
function SetCallBack(audioRecorder) {
audioRecorder.on('prepare', () => { // Set the 'prepare' event callback. audioRecorder.on('prepare', () => { // Set the 'prepare' event callback.
console.log('prepare success'); console.log('prepare success');
// The recording page is ready. You can click the Record button to start recording. audioRecorder.start(); // Call the start API to start recording and trigger the 'start' event callback.
}); });
audioRecorder.on('start', () => { // Set the 'start' event callback. audioRecorder.on('start', () => { // Set the 'start' event callback.
console.log('audio recorder start success'); console.log('audio recorder start success');
// The Record button is changed to the pausable state. audioRecorder.stop(); // Call the stop API to stop recording and trigger the 'stop' event callback.
}); });
audioRecorder.on('stop', () => { // Set the 'stop' event callback. audioRecorder.on('stop', () => { // Set the 'stop' event callback.
console.log('audio recorder stop success'); console.log('audio recorder stop success');
audioRecorder.release(); // Call the release API to release resources and trigger the 'release' event callback.
}); });
audioRecorder.on('release', () => { // Set the 'release' event callback. audioRecorder.on('release', () => { // Set the 'release' event callback.
console.log('audio recorder release success'); console.log('audio recorder release success');
audioRecorder = undefined;
}); });
} audioRecorder.on('error', (error) => { // Set the 'error' event callback.
console.info(`audio error called, errName is ${error.name}`);
console.info(`audio error called, errCode is ${error.code}`);
console.info(`audio error called, errMessage is ${error.message}`);
});
}
// pathName indicates the passed recording file name, for example, 01.mp3. The generated file address is /storage/media/100/local/files/Movies/01.mp3. // pathName indicates the passed recording file name, for example, 01.mp3. The generated file address is /storage/media/100/local/files/Video/01.mp3.
// To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA. // To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA.
async function getFd(pathName) { async getFd(pathName) {
let displayName = pathName; let displayName = pathName;
const mediaTest = mediaLibrary.getMediaLibrary(); const mediaTest = mediaLibrary.getMediaLibrary();
let fileKeyObj = mediaLibrary.FileKey; let fileKeyObj = mediaLibrary.FileKey;
...@@ -162,33 +161,35 @@ async function getFd(pathName) { ...@@ -162,33 +161,35 @@ async function getFd(pathName) {
let fetchFileResult = await mediaTest.getFileAssets(fetchOp); let fetchFileResult = await mediaTest.getFileAssets(fetchOp);
let fileAsset = await fetchFileResult.getAllObject(); let fileAsset = await fetchFileResult.getAllObject();
let fdNumber = await fileAsset[0].open('Rw'); let fdNumber = await fileAsset[0].open('Rw');
fdNumber = "fd://" + fdNumber.toString(); this.testFdNumber = "fd://" + fdNumber.toString();
testFdNumber = fdNumber; }
} }
}
await getFd('01.mp3');
// 1. Create an AudioRecorder instance. async audioRecorderDemo() {
let audioRecorder = media.createAudioRecorder(); // 1. Create an AudioRecorder instance.
// 2. Set the callbacks. let audioRecorder = media.createAudioRecorder();
SetCallBack(audioRecorder); // 2. Set the callbacks.
// 3. Set the recording parameters. this.setCallBack(audioRecorder);
let audioRecorderConfig = { await this.getFd('01.mp3'); // Call the getFd method to obtain the FD address of the file to be recorded.
audioEncoder : media.AudioEncoder.AAC_LC , // 3. Set the recording parameters.
let audioRecorderConfig = {
audioEncodeBitRate : 22050, audioEncodeBitRate : 22050,
audioSampleRate : 22050, audioSampleRate : 22050,
numberOfChannels : 2, numberOfChannels : 2,
format : media.AudioOutputFormat.AAC_ADTS, uri : this.testFdNumber, // testFdNumber is generated by getFd.
uri : testFdNumber, // testFdNumber is generated by getFd.
location : { latitude : 30, longitude : 130}, location : { latitude : 30, longitude : 130},
audioEncoderMime : media.CodecMimeType.AUDIO_AAC,
fileFormat : media.ContainerFormatType.CFT_MPEG_4A,
}
audioRecorder.prepare(audioRecorderConfig); // Call the prepare method to trigger the 'prepare' event callback.
}
} }
audioRecorder.prepare(audioRecorderConfig)
// 4. Start recording.
audioRecorder.start(); // The start API can be called to trigger the 'start' event callback only after the 'prepare' event callback is complete.
// 5. Stop recording.
audioRecorder.stop(); // The stop API can be called to trigger the 'stop' event callback only after the 'start' or 'resume' event callback is complete.
// 6. Release resources.
audioRecorder.release(); // The AudioRecorder resource is destroyed.
audioRecorder = undefined;
``` ```
## Samples
The following samples are provided to help you better understand how to develop audio recording:
- [`Recorder`: Recorder (eTS, API 8)](https://gitee.com/openharmony/app_samples/tree/master/media/Recorder)
- [`eTsAudioPlayer`: Audio Player (eTS)](https://gitee.com/openharmony/app_samples/blob/master/media/Recorder/entry/src/main/ets/MainAbility/pages/Play.ets)
- [Audio Player](https://gitee.com/openharmony/codelabs/tree/master/Media/Audio_OH_ETS)
en/application-dev/media/video-recorder.md
浏览文件 @ d0caf1d8
...@@ -16,21 +16,20 @@ During video recording, audio and video signals are captured, encoded, and saved ...@@ -16,21 +16,20 @@ During video recording, audio and video signals are captured, encoded, and saved
## How to Develop ## How to Develop
For details about the APIs used for video recording, see [VideoRecorder in the Media API](../reference/apis/js-apis-media.md). For details about the APIs, see [VideoRecorder in the Media API](../reference/apis/js-apis-media.md).
### Full-Process Scenario ### Full-Process Scenario
The full video recording process includes creating an instance, setting recording parameters, recording video, pausing, resuming, and stopping recording, and releasing resources. The full video recording process includes creating an instance, setting recording parameters, starting, pausing, resuming, and stopping recording, and releasing resources.
```js ```js
import media from '@ohos.multimedia.media' import media from '@ohos.multimedia.media'
import mediaLibrary from '@ohos.multimedia.mediaLibrary' import mediaLibrary from '@ohos.multimedia.mediaLibrary'
export class VideoRecorderDemo {
let testFdNumber; private testFdNumber; // Used to save the FD address.
// pathName indicates the passed recording file name, for example, 01.mp4. The generated file address is /storage/media/100/local/files/Video/01.mp4.
// pathName indicates the passed recording file name, for example, 01.mp4. The generated file address is /storage/media/100/local/files/Movies/01.mp4. // To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA.
// To use the media library, declare the following permissions: ohos.permission.MEDIA_LOCATION, ohos.permission.WRITE_MEDIA, and ohos.permission.READ_MEDIA. async getFd(pathName) {
async function getFd(pathName) {
let displayName = pathName; let displayName = pathName;
const mediaTest = mediaLibrary.getMediaLibrary(); const mediaTest = mediaLibrary.getMediaLibrary();
let fileKeyObj = mediaLibrary.FileKey; let fileKeyObj = mediaLibrary.FileKey;
...@@ -46,14 +45,31 @@ async function getFd(pathName) { ...@@ -46,14 +45,31 @@ async function getFd(pathName) {
let fetchFileResult = await mediaTest.getFileAssets(fetchOp); let fetchFileResult = await mediaTest.getFileAssets(fetchOp);
let fileAsset = await fetchFileResult.getAllObject(); let fileAsset = await fetchFileResult.getAllObject();
let fdNumber = await fileAsset[0].open('Rw'); let fdNumber = await fileAsset[0].open('Rw');
fdNumber = "fd://" + fdNumber.toString(); this.testFdNumber = "fd://" + fdNumber.toString();
testFdNumber = fdNumber; }
} }
}
await getFd('01.mp4'); // Error callback triggered in the case of an error
failureCallback(error) {
console.info('error happened, error name is ' + error.name);
console.info('error happened, error code is ' + error.code);
console.info('error happened, error message is ' + error.message);
}
let videoProfile = { // Error callback triggered in the case of an exception
catchCallback(error) {
console.info('catch error happened, error name is ' + error.name);
console.info('catch error happened, error code is ' + error.code);
console.info('catch error happened, error message is ' + error.message);
}
async videoRecorderDemo() {
let videoRecorder = null; // videoRecorder is an empty object and assigned with a value after createVideoRecorder is successfully called.
let surfaceID = null; // Used to save the surface ID returned by getInputSurface.
// Obtain the FD address of the video to be recorded.
await this.getFd('01.mp4');
// Recording-related parameter settings
let videoProfile = {
audioBitrate : 48000, audioBitrate : 48000,
audioChannels : 2, audioChannels : 2,
audioCodec : 'audio/mp4a-latm', audioCodec : 'audio/mp4a-latm',
...@@ -64,36 +80,18 @@ let videoProfile = { ...@@ -64,36 +80,18 @@ let videoProfile = {
videoFrameWidth : 640, videoFrameWidth : 640,
videoFrameHeight : 480, videoFrameHeight : 480,
videoFrameRate : 30 videoFrameRate : 30
} }
let videoConfig = { let videoConfig = {
audioSourceType : 1, audioSourceType : 1,
videoSourceType : 0, videoSourceType : 0,
profile : videoProfile, profile : videoProfile,
url: testFdNumber, // testFdNumber is generated by getFd. url : this.testFdNumber, // testFdNumber is generated by getFd.
orientationHint : 0, orientationHint : 0,
location : { latitude : 30, longitude : 130 }, location : { latitude : 30, longitude : 130 },
} }
// Create a VideoRecorder object.
// Error callback triggered in the case of an error await media.createVideoRecorder().then((recorder) => {
function failureCallback(error) {
console.info('error happened, error name is ' + error.name);
console.info('error happened, error code is ' + error.code);
console.info('error happened, error message is ' + error.message);
}
// Error callback triggered in the case of an exception
function catchCallback(error) {
console.info('catch error happened, error name is ' + error.name);
console.info('catch error happened, error code is ' + error.code);
console.info('catch error happened, error message is ' + error.message);
}
let videoRecorder = null; // videoRecorder is an empty object and assigned with a value after createVideoRecorder is successfully called.
let surfaceID = null; // Used to save the surface ID returned by getInputSurface.
// Create a VideoRecorder object.
await media.createVideoRecorder().then((recorder) => {
console.info('case createVideoRecorder called'); console.info('case createVideoRecorder called');
if (typeof (recorder) != 'undefined') { if (typeof (recorder) != 'undefined') {
videoRecorder = recorder; videoRecorder = recorder;
...@@ -101,47 +99,53 @@ await media.createVideoRecorder().then((recorder) => { ...@@ -101,47 +99,53 @@ await media.createVideoRecorder().then((recorder) => {
} else { } else {
console.info('createVideoRecorder failed'); console.info('createVideoRecorder failed');
} }
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Obtain the surface ID, save it, and pass it to camera-related interfaces. // Call the prepare API to prepare for video recording.
await videoRecorder.getInputSurface().then((surface) => { await videoRecorder.prepare(videoConfig).then(() => {
console.info('prepare success');
}, this.failureCallback).catch(this.catchCallback);
// Obtain the surface ID, save it, and pass it to camera-related APIs.
await videoRecorder.getInputSurface().then((surface) => {
console.info('getInputSurface success'); console.info('getInputSurface success');
surfaceID = surface; surfaceID = surface;
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Video recording depends on camera-related interfaces. The following operations can be performed only after the video output start interface is invoked.
// Start video recording. // Video recording depends on camera-related APIs. The following operations can be performed only after the video output start API is invoked. For details about how to call the camera APIs, see the samples.
await videoRecorder.start().then(() => { // Start video recording.
await videoRecorder.start().then(() => {
console.info('start success'); console.info('start success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Pause video playback before the video output stop interface is invoked. // Pause video recording before the video output stop API of the camera is invoked.
await videoRecorder.pause().then(() => { await videoRecorder.pause().then(() => {
console.info('pause success'); console.info('pause success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Resume video playback after the video output start interface is invoked. // Resume video recording after the video output start API of the camera is invoked.
await videoRecorder.resume().then(() => { await videoRecorder.resume().then(() => {
console.info('resume success'); console.info('resume success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Stop video recording after the video output stop interface is invoked. // Stop video recording after the video output stop API of the camera is invoked.
await videoRecorder.stop().then(() => { await videoRecorder.stop().then(() => {
console.info('stop success'); console.info('stop success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Reset the recording configuration. // Reset the recording configuration.
await videoRecorder.reset().then(() => { await videoRecorder.reset().then(() => {
console.info('reset success'); console.info('reset success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Release the video recording resources and camera object resources. // Release the video recording resources and camera object resources.
await videoRecorder.release().then(() => { await videoRecorder.release().then(() => {
console.info('release success'); console.info('release success');
}, failureCallback).catch(catchCallback); }, this.failureCallback).catch(this.catchCallback);
// Set the related object to null. // Set the related object to null.
videoRecorder = null; videoRecorder = undefined;
surfaceID = null; surfaceID = undefined;
}
}
``` ```
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