Skip to content

D
Docs

OpenHarmony / Docs
大约 1 年 前同步成功

通知 159
Star 292
Fork 28
D
Docs

体验新版 GitCode，发现更多精彩内容 >>

未验证 提交 6fd6deaf 编写于 作者: O openharmony_ci 提交者： Gitee
浏览文件
操作

!15526 翻译完成：15271+14811+14656+14531+14636+15297+14593 media API+文件夹更新 

Merge pull request !15526 from wusongqing/TR15271
上级 8da7e46b d81d52f7
隐藏空白更改
内联 并排
Showing with 181 addition and 275 deletion
en/application-dev/media/Readme-EN.md
浏览文件 @ 6fd6deaf
# Media
- Audio
- Audio and Video
- [Audio Overview](audio-overview.md)
- [Audio Playback Development](audio-playback.md)
- [Audio Recording Development](audio-recorder.md)
- [Audio Rendering Development](audio-renderer.md)
- [Audio Stream Management Development](audio-stream-manager.md)
- [Audio Capture Development](audio-capturer.md)
......@@ -12,8 +10,10 @@
- [Audio Interruption Mode Development](audio-interruptmode.md)
- [Volume Management Development](audio-volume-manager.md)
- [Audio Routing and Device Management Development](audio-routing-manager.md)
- Video
- [AVPlayer Development (Recommended)](avplayer-playback.md)
- [AVRecorder Development (Recommended)](avrecorder.md)
- [Audio Playback Development](audio-playback.md)
- [Audio Recording Development](audio-recorder.md)
- [Video Playback Development](video-playback.md)
- [Video Recording Development](video-recorder.md)
......
en/application-dev/media/audio-capturer.md
浏览文件 @ 6fd6deaf
......@@ -72,7 +72,7 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
}
await audioCapturer.start();
let state = audioCapturer.state;
state = audioCapturer.state;
if (state == audio.AudioState.STATE_RUNNING) {
console.info('AudioRecLog: Capturer started');
} else {
......@@ -86,7 +86,7 @@ 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 fileio from '@ohos.fileio';
import fs from '@ohos.file.fs';
let state = audioCapturer.state;
// The read operation can be performed only when the state is STATE_RUNNING.
......@@ -96,31 +96,36 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
}
const path = '/data/data/.pulse_dir/capture_js.wav'; // Path for storing the collected audio file.
let fd = fileio.openSync(path, 0o102, 0o777);
if (fd !== null) {
console.info('AudioRecLog: file fd created');
}
else{
console.info('AudioRecLog: file fd create : FAILED');
let file = fs.openSync(filePath, 0o2);
let fd = file.fd;
if (file !== null) {
console.info('AudioRecLog: file created');
} else {
console.info('AudioRecLog: file create : FAILED');
return;
}
fd = fileio.openSync(path, 0o2002, 0o666);
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);
let options = {
offset: count * this.bufferSize,
length: this.bufferSize
}
if (typeof(buffer) == undefined) {
console.info('AudioRecLog: read buffer failed');
} else {
let number = fileio.writeSync(fd, buffer);
let number = fs.writeSync(fd, buffer, options);
console.info(`AudioRecLog: data written: ${number}`);
}
}
numBuffersToCapture--;
count++;
}
```
......@@ -189,7 +194,7 @@ For details about the APIs, see [AudioCapturer in Audio Management](../reference
let audioTime : number = await audioCapturer.getAudioTime();
// Obtain a proper minimum buffer size.
let bufferSize : number = await audioCapturer.getBuffersize();
let bufferSize : number = await audioCapturer.getBufferSize();
```
7. (Optional) Use **on('markReach')** to subscribe to the mark reached event, and use **off('markReach')** to unsubscribe from the event.
......
en/application-dev/media/audio-playback.md
浏览文件 @ 6fd6deaf
......@@ -38,7 +38,7 @@ For details about the **src** types supported by **AudioPlayer**, see the [src a
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
// Print the stream track information.
function printfDescription(obj) {
......@@ -112,14 +112,8 @@ async function audioPlayerDemo() {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el2/100/base/ohos.acts.multimedia.audio.audioplayer/haps/entry/files" command.
let path = pathDir + '/01.mp3'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
```
......@@ -128,7 +122,7 @@ async function audioPlayerDemo() {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class AudioDemo {
// Set the player callbacks.
......@@ -154,14 +148,8 @@ export class AudioDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el2/100/base/ohos.acts.multimedia.audio.audioplayer/haps/entry/files" command.
let path = pathDir + '/01.mp3'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
}
......@@ -171,7 +159,7 @@ export class AudioDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class AudioDemo {
// Set the player callbacks.
......@@ -202,14 +190,8 @@ export class AudioDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\02.mp3 /data/app/el2/100/base/ohos.acts.multimedia.audio.audioplayer/haps/entry/files" command.
let nextpath = pathDir + '/02.mp3'
await fileIO.open(nextpath).then((fdNumber) => {
nextFdPath = nextFdPath + '' + fdNumber;
console.info('open fd success fd is' + nextFdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let nextFile = await fs.open(nextpath);
nextFdPath = nextFdPath + '' + nextFile.fd;
audioPlayer.src = nextFdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
......@@ -220,14 +202,8 @@ export class AudioDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el2/100/base/ohos.acts.multimedia.audio.audioplayer/haps/entry/files" command.
let path = pathDir + '/01.mp3'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
}
......@@ -237,7 +213,7 @@ export class AudioDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class AudioDemo {
// Set the player callbacks.
......@@ -259,14 +235,8 @@ export class AudioDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\01.mp3 /data/app/el2/100/base/ohos.acts.multimedia.audio.audioplayer/haps/entry/files" command.
let path = pathDir + '/01.mp3'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
audioPlayer.src = fdPath; // Set the src attribute and trigger the 'dataLoad' event callback.
}
}
......
en/application-dev/media/audio-renderer.md
浏览文件 @ 6fd6deaf
......@@ -33,31 +33,30 @@ The following figure shows the audio renderer state transitions.
For details about the APIs, see [AudioRenderer in Audio Management](../reference/apis/js-apis-audio.md#audiorenderer8).
1. Use **createAudioRenderer()** to create an **AudioRenderer** instance.
Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. This instance is used to render audio, control and obtain the rendering status, and register a callback for notification.
Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. This instance is used to render audio, control and obtain the rendering status, and register a callback for notification.
```js
import audio from '@ohos.multimedia.audio';
let audioStreamInfo = {
samplingRate: audio.AudioSamplingRate.SAMPLE_RATE_44100,
channels: audio.AudioChannel.CHANNEL_1,
sampleFormat: audio.AudioSampleFormat.SAMPLE_FORMAT_S16LE,
encodingType: audio.AudioEncodingType.ENCODING_TYPE_RAW
}
let audioRendererInfo = {
content: audio.ContentType.CONTENT_TYPE_SPEECH,
usage: audio.StreamUsage.STREAM_USAGE_VOICE_COMMUNICATION,
rendererFlags: 0 // 0 is the extended flag bit of the audio renderer. The default value is 0.
import audio from '@ohos.multimedia.audio';
let audioStreamInfo = {
samplingRate: audio.AudioSamplingRate.SAMPLE_RATE_44100,
channels: audio.AudioChannel.CHANNEL_1,
sampleFormat: audio.AudioSampleFormat.SAMPLE_FORMAT_S16LE,
encodingType: audio.AudioEncodingType.ENCODING_TYPE_RAW
}
let audioRendererInfo = {
content: audio.ContentType.CONTENT_TYPE_SPEECH,
usage: audio.StreamUsage.STREAM_USAGE_VOICE_COMMUNICATION,
rendererFlags: 0 // 0 is the extended flag bit of the audio renderer. The default value is 0.
}
let audioRendererOptions = {
streamInfo: audioStreamInfo,
rendererInfo: audioRendererInfo
}
let audioRendererOptions = {
streamInfo: audioStreamInfo,
rendererInfo: audioRendererInfo
}
let audioRenderer = await audio.createAudioRenderer(audioRendererOptions);
console.log("Create audio renderer success.");
let audioRenderer = await audio.createAudioRenderer(audioRendererOptions);
console.log("Create audio renderer success.");
```
2. Use **start()** to start audio rendering.
......@@ -90,7 +89,7 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
Read the audio data to be played to the buffer. Call **write()** repeatedly to write the data to the buffer.
```js
import fileio from '@ohos.fileio';
import fs from '@ohos.file.fs';
import audio from '@ohos.multimedia.audio';
async function writeBuffer(buf) {
......@@ -109,35 +108,33 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
// Set a proper buffer size for the audio renderer. You can also select a buffer of another size.
const bufferSize = await audioRenderer.getBufferSize();
let dir = globalThis.fileDir; // You must use the sandbox path.
const path = dir + '/file_example_WAV_2MG.wav'; // The file to render is in the following path: /data/storage/el2/base/haps/entry/files/file_example_WAV_2MG.wav
console.info(`file path: ${ path}`);
let ss = fileio.createStreamSync(path, 'r');
const totalSize = fileio.statSync(path).size; // Size of the file to render.
let discardHeader = new ArrayBuffer(bufferSize);
ss.readSync(discardHeader);
let rlen = 0;
rlen += bufferSize;
let id = setInterval(() => {
if (audioRenderer.state == audio.AudioState.STATE_RELEASED) { // The rendering stops if the audio renderer is in the STATE_RELEASED state.
ss.closeSync();
await audioRenderer.stop();
clearInterval(id);
}
if (audioRenderer.state == audio.AudioState.STATE_RUNNING) {
if (rlen >= totalSize) { // The rendering stops if the file finishes reading.
ss.closeSync();
await audioRenderer.stop();
clearInterval(id);
}
let buf = new ArrayBuffer(bufferSize);
rlen += ss.readSync(buf);
console.info(`Total bytes read from file: ${rlen}`);
writeBuffer(buf);
} else {
console.info('check after next interval');
const filePath = dir + '/file_example_WAV_2MG.wav'; // The file to render is in the following path: /data/storage/el2/base/haps/entry/files/file_example_WAV_2MG.wav
console.info(`file filePath: ${ filePath}`);
let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let stat = await fs.stat(filePath); // Music file information.
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);
for (let i = 0;i < len; i++) {
let options = {
offset: i * this.bufferSize,
length: this.bufferSize
}
}, 30); // The timer interval is set based on the audio format. The unit is millisecond.
let readsize = await fs.read(file.fd, buf, options)
let writeSize = await new Promise((resolve,reject)=>{
this.audioRenderer.write(buf,(err,writeSize)=>{
if(err){
reject(err)
}else{
resolve(writeSize)
}
})
})
}
fs.close(file)
await audioRenderer.stop(); // Stop rendering.
await audioRenderer.release(); // Releases the resources.
```
4. (Optional) Call **pause()** or **stop()** to pause or stop rendering.
......@@ -192,7 +189,6 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
}
await audioRenderer.drain();
state = audioRenderer.state;
}
```
......@@ -209,7 +205,6 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
console.info('Renderer already released');
return;
}
await audioRenderer.release();
state = audioRenderer.state;
......@@ -242,7 +237,7 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
let audioTime : number = await audioRenderer.getAudioTime();
// Obtain a proper minimum buffer size.
let bufferSize : number = await audioRenderer.getBuffersize();
let bufferSize : number = await audioRenderer.getBufferSize();
// Obtain the audio renderer rate.
let renderRate : audio.AudioRendererRate = await audioRenderer.getRenderRate();
......@@ -424,35 +419,31 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
let dir = globalThis.fileDir; // You must use the sandbox path.
const path1 = dir + '/music001_48000_32_1.wav'; // The file to render is in the following path: /data/storage/el2/base/haps/entry/files/music001_48000_32_1.wav
console.info(`audioRender1 file path: ${ path1}`);
let ss1 = await fileio.createStream(path1,'r');
const totalSize1 = fileio.statSync(path1).size; // Size of the file to render.
console.info(`totalSize1 -------: ${totalSize1}`);
let discardHeader = new ArrayBuffer(bufferSize);
ss1.readSync(discardHeader);
let rlen = 0;
rlen += bufferSize;
let file1 = fs.openSync(path1, fs.OpenMode.READ_ONLY);
let stat = await fs.stat(path1); // Music file information.
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);
// 1.7 Render the original audio data in the buffer by using audioRender.
let id = setInterval(async () => {
if (audioRenderer1.state == audio.AudioState.STATE_RELEASED) { // The rendering stops if the audio renderer is in the STATE_RELEASED state.
ss1.closeSync();
audioRenderer1.stop();
clearInterval(id);
for (let i = 0;i < len; i++) {
let options = {
offset: i * this.bufferSize,
length: this.bufferSize
}
if (audioRenderer1.state == audio.AudioState.STATE_RUNNING) {
if (rlen >= totalSize1) { // The rendering stops if the file finishes reading.
ss1.closeSync();
await audioRenderer1.stop();
clearInterval(id);
}
let buf = new ArrayBuffer(bufferSize);
rlen += ss1.readSync(buf);
console.info(`Total bytes read from file: ${rlen}`);
await writeBuffer(buf, that.audioRenderer1);
} else {
console.info('check after next interval');
}
}, 30); // The timer interval is set based on the audio format. The unit is millisecond.
let readsize = await fs.read(file.fd, buf, options)
let writeSize = await new Promise((resolve,reject)=>{
this.audioRenderer1.write(buf,(err,writeSize)=>{
if(err){
reject(err)
}else{
resolve(writeSize)
}
})
})
}
fs.close(file1)
await audioRenderer1.stop(); // Stop rendering.
await audioRenderer1.release(); Releases the resources.
}
async runningAudioRender2(){
......@@ -499,36 +490,32 @@ Set parameters of the **AudioRenderer** instance in **audioRendererOptions**. Th
// 2.6 Read the original audio data file.
let dir = globalThis.fileDir; // You must use the sandbox path.
const path2 = dir + '/music002_48000_32_1.wav'; // The file to render is in the following path: /data/storage/el2/base/haps/entry/files/music002_48000_32_1.wav
console.error(`audioRender1 file path: ${ path2}`);
let ss2 = await fileio.createStream(path2,'r');
const totalSize2 = fileio.statSync(path2).size; // Size of the file to render.
console.error(`totalSize2 -------: ${totalSize2}`);
let discardHeader2 = new ArrayBuffer(bufferSize);
ss2.readSync(discardHeader2);
let rlen = 0;
rlen += bufferSize;
console.info(`audioRender2 file path: ${ path2}`);
let file2 = fs.openSync(path2, fs.OpenMode.READ_ONLY);
let stat = await fs.stat(path2); // Music file information.
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);
// 2.7 Render the original audio data in the buffer by using audioRender.
let id = setInterval(async () => {
if (audioRenderer2.state == audio.AudioState.STATE_RELEASED) { // The rendering stops if the audio renderer is in the STATE_RELEASED state.
ss2.closeSync();
that.audioRenderer2.stop();
clearInterval(id);
}
if (audioRenderer1.state == audio.AudioState.STATE_RUNNING) {
if (rlen >= totalSize2) { // The rendering stops if the file finishes reading.
ss2.closeSync();
await audioRenderer2.stop();
clearInterval(id);
}
let buf = new ArrayBuffer(bufferSize);
rlen += ss2.readSync(buf);
console.info(`Total bytes read from file: ${rlen}`);
await writeBuffer(buf, that.audioRenderer2);
} else {
console.info('check after next interval');
for (let i = 0;i < len; i++) {
let options = {
offset: i * this.bufferSize,
length: this.bufferSize
}
}, 30); // The timer interval is set based on the audio format. The unit is millisecond.
let readsize = await fs.read(file.fd, buf, options)
let writeSize = await new Promise((resolve,reject)=>{
this.audioRenderer2.write(buf,(err,writeSize)=>{
if(err){
reject(err)
}else{
resolve(writeSize)
}
})
})
}
fs.close(file2)
await audioRenderer2.stop(); // Stop rendering.
await audioRenderer2.release(); // Releases the resources.
}
async writeBuffer(buf, audioRender) {
......
en/application-dev/media/avplayer-playback.md
浏览文件 @ 6fd6deaf
......@@ -104,7 +104,7 @@ The full playback process includes creating an instance, setting resources, sett
```js
import media from '@ohos.multimedia.media'
import audio from '@ohos.multimedia.audio';
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
const TAG = 'AVPlayerDemo:'
export class AVPlayerDemo {
......@@ -223,14 +223,8 @@ export class AVPlayerDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el2/100/base/ohos.acts.multimedia.media.avplayer/haps/entry/files" command.
let path = pathDir + '/H264_AAC.mp4'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber
console.info('open fd success fd is' + fdPath)
}, (err) => {
console.info('open fd failed err is' + err)
}).catch((err) => {
console.info('open fd failed err is' + err)
});
let file = await fs.open(path)
fdPath = fdPath + '' + file.fd
this.avPlayer.url = fdPath
}
}
......@@ -240,7 +234,7 @@ export class AVPlayerDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
const TAG = 'AVPlayerDemo:'
export class AVPlayerDemo {
......@@ -280,7 +274,7 @@ export class AVPlayerDemo {
break;
case 'stopped': // This state is reported upon a successful callback of stop().
console.info(TAG + 'state stopped called')
this.avPlayer.reset() // Call reset() to initialize the AVPlayer state.
this.avPlayer.release() // Call reset() to initialize the AVPlayer state.
break;
case 'released':
console.info(TAG + 'state released called')
......@@ -302,24 +296,18 @@ export class AVPlayerDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el2/100/base/ohos.acts.multimedia.media.avplayer/haps/entry/files" command.
let path = pathDir + '/H264_AAC.mp4'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber
console.info('open fd success fd is' + fdPath)
}, (err) => {
console.info('open fd failed err is' + err)
}).catch((err) => {
console.info('open fd failed err is' + err)
});
let file = await fs.open(path)
fdPath = fdPath + '' + file.fd
this.avPlayer.url = fdPath
}
}
```
### Switching to the Next Video Clip
### Looping a Song
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
const TAG = 'AVPlayerDemo:'
export class AVPlayerDemo {
......@@ -362,7 +350,7 @@ export class AVPlayerDemo {
break;
case 'stopped': // This state is reported upon a successful callback of stop().
console.info(TAG + 'state stopped called')
this.avPlayer.reset() // Call reset() to initialize the AVPlayer state.
this.avPlayer.release() // Call reset() to initialize the AVPlayer state.
break;
case 'released':
console.info(TAG + 'state released called')
......@@ -393,23 +381,17 @@ export class AVPlayerDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el2/100/base/ohos.acts.multimedia.media.avplayer/haps/entry/files" command.
let path = pathDir + '/H264_AAC.mp4'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber
console.info('open fd success fd is' + fdPath)
}, (err) => {
console.info('open fd failed err is' + err)
}).catch((err) => {
console.info('open fd failed err is' + err)
});
let file = await fs.open(path)
fdPath = fdPath + '' + file.fd
this.avPlayer.url = fdPath
}
}
```
### Looping a Song
### Switching to the Next Video Clip
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
const TAG = 'AVPlayerDemo:'
export class AVPlayerDemo {
......@@ -422,14 +404,8 @@ export class AVPlayerDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_MP3.mp4 /data/app/el2/100/base/ohos.acts.multimedia.media.avplayer/haps/entry/files" command.
let path = pathDir + '/H264_MP3.mp4'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber
console.info('open fd success fd is' + fdPath)
}, (err) => {
console.info('open fd failed err is' + err)
}).catch((err) => {
console.info('open fd failed err is' + err)
});
let file = await fs.open(path)
fdPath = fdPath + '' + file.fd
this.avPlayer.url = fdPath // The initialized state is reported again.
}
......@@ -493,14 +469,8 @@ export class AVPlayerDemo {
let pathDir = "/data/storage/el2/base/haps/entry/files" // The path used here is an example. Obtain the path based on project requirements.
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el2/100/base/ohos.acts.multimedia.media.avplayer/haps/entry/files" command.
let path = pathDir + '/H264_AAC.mp4'
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber
console.info('open fd success fd is' + fdPath)
}, (err) => {
console.info('open fd failed err is' + err)
}).catch((err) => {
console.info('open fd failed err is' + err)
});
let file = await fs.open(path)
fdPath = fdPath + '' + file.fd
this.avPlayer.url = fdPath
}
}
......
en/application-dev/media/avrecorder.md
浏览文件 @ 6fd6deaf
......@@ -69,14 +69,14 @@ export class AVRecorderDemo {
let surfaceID; // The surface ID is obtained by calling getInputSurface and transferred to the videoOutput object of the camera.
await this.getFd('01.mp4');
// Configure the parameters related to audio and video recording.
// Configure the parameters related to audio and video recording based on those supported by the hardware device.
let avProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : media.CodecMimeType.AUDIO_AAC,
audioSampleRate : 48000,
fileFormat : media.ContainerFormatType.CFT_MPEG_4,
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : media.CodecMimeType.VIDEO_MPEG4,
videoFrameWidth : 640,
videoFrameHeight : 480,
......@@ -365,10 +365,10 @@ export class VideoRecorderDemo {
let surfaceID; // The surface ID is obtained by calling getInputSurface and transferred to the videoOutput object of the camera.
await this.getFd('01.mp4');
// Configure the parameters related to video recording.
// Configure the parameters related to pure video recording based on those supported by the hardware device.
let videoProfile = {
fileFormat : media.ContainerFormatType.CFT_MPEG_4,
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : media.CodecMimeType.VIDEO_MPEG4,
videoFrameWidth : 640,
videoFrameHeight : 480,
......
en/application-dev/media/video-playback.md
浏览文件 @ 6fd6deaf
......@@ -51,7 +51,7 @@ For details about how to create an XComponent, see [XComponent](../reference/ark
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class VideoPlayerDemo {
// Report an error in the case of a function invocation failure.
failureCallback(error) {
......@@ -82,14 +82,8 @@ export class VideoPlayerDemo {
let fdPath = 'fd://'
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile/H264_AAC.mp4';
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
// Call createVideoPlayer to create a VideoPlayer instance.
await media.createVideoPlayer().then((video) => {
if (typeof (video) != 'undefined') {
......@@ -180,7 +174,7 @@ export class VideoPlayerDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class VideoPlayerDemo {
// Report an error in the case of a function invocation failure.
failureCallback(error) {
......@@ -211,14 +205,8 @@ export class VideoPlayerDemo {
let fdPath = 'fd://'
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile/H264_AAC.mp4';
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
// Call createVideoPlayer to create a VideoPlayer instance.
await media.createVideoPlayer().then((video) => {
if (typeof (video) != 'undefined') {
......@@ -267,7 +255,7 @@ export class VideoPlayerDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class VideoPlayerDemo {
// Report an error in the case of a function invocation failure.
failureCallback(error) {
......@@ -299,14 +287,8 @@ export class VideoPlayerDemo {
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile/H264_AAC.mp4';
let nextPath = '/data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile/MP4_AAC.mp4';
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
// Call createVideoPlayer to create a VideoPlayer instance.
await media.createVideoPlayer().then((video) => {
if (typeof (video) != 'undefined') {
......@@ -341,14 +323,8 @@ export class VideoPlayerDemo {
// Obtain the next video FD address.
fdPath = 'fd://'
await fileIO.open(nextPath).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let nextFile = await fs.open(nextPath);
fdPath = fdPath + '' + nextFile.fd;
// Set the second video playback source.
videoPlayer.url = fdPath;
......@@ -378,7 +354,7 @@ export class VideoPlayerDemo {
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
import fs from '@ohos.file.fs'
export class VideoPlayerDemo {
// Report an error in the case of a function invocation failure.
failureCallback(error) {
......@@ -409,14 +385,8 @@ export class VideoPlayerDemo {
let fdPath = 'fd://'
// The stream in the path can be pushed to the device by running the "hdc file send D:\xxx\H264_AAC.mp4 /data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile" command.
let path = '/data/app/el1/bundle/public/ohos.acts.multimedia.video.videoplayer/ohos.acts.multimedia.video.videoplayer/assets/entry/resources/rawfile/H264_AAC.mp4';
await fileIO.open(path).then((fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd success fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}).catch((err) => {
console.info('open fd failed err is' + err);
});
let file = await fs.open(path);
fdPath = fdPath + '' + file.fd;
// Call createVideoPlayer to create a VideoPlayer instance.
await media.createVideoPlayer().then((video) => {
if (typeof (video) != 'undefined') {
......
en/application-dev/media/video-recorder.md
浏览文件 @ 6fd6deaf
......@@ -76,14 +76,14 @@ export class VideoRecorderDemo {
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
// Configure the parameters related to video recording based on those supported by the hardware device.
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : 'audio/mp4a-latm',
audioSampleRate : 48000,
fileFormat : 'mp4',
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : 'video/mp4v-es',
videoFrameWidth : 640,
videoFrameHeight : 480,
......
en/application-dev/reference/apis/js-apis-media.md
浏览文件 @ 6fd6deaf
......@@ -1162,7 +1162,7 @@ Unsubscribes from the event that checks whether the bit rate is successfully set
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | ------------------------------------------------------------ |
| type | string | Yes | Event type, which is **'bitrateDone'** in this case|
| type | string | Yes | Event type, which is **'bitrateDone'** in this case.|
**Example**
......@@ -1720,13 +1720,14 @@ For details about the error codes, see [Media Error Codes](../errorcodes/errorco
**Example**
```js
// Configure the parameters based on those supported by the hardware device.
let AVRecorderProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : media.CodecMimeType.AUDIO_AAC,
audioSampleRate : 48000,
fileFormat : media.ContainerFormatType.CFT_MPEG_4,
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : media.CodecMimeType.VIDEO_MPEG4,
videoFrameWidth : 640,
videoFrameHeight : 480,
......@@ -1790,13 +1791,14 @@ For details about the error codes, see [Media Error Codes](../errorcodes/errorco
**Example**
```js
// Configure the parameters based on those supported by the hardware device.
let AVRecorderProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : media.CodecMimeType.AUDIO_AAC,
audioSampleRate : 48000,
fileFormat : media.ContainerFormatType.CFT_MPEG_4,
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : media.CodecMimeType.VIDEO_MPEG4,
videoFrameWidth : 640,
videoFrameHeight : 480,
......@@ -2484,7 +2486,7 @@ Describes the audio and video recording parameters.
| audioSourceType | [AudioSourceType](#audiosourcetype9) | No | Type of the audio source to record. This parameter is mandatory for audio recording. |
| videoSourceType | [VideoSourceType](#videosourcetype9) | No | Type of the video source to record. This parameter is mandatory for video recording. |
| profile | [AVRecorderProfile](#avrecorderprofile9) | Yes | Recording profile. This parameter is mandatory. |
| url | string | Yes | Recording output URL: fd://xx (fd number).<br> ![img](figures/en-us_image_url.png)<br>This parameter is mandatory. |
| url | string | Yes | Recording output URL: fd://xx (fd number).<br>![img](figures/en-us_image_url.png)<br>This parameter is mandatory. |
| rotation | number | No | Rotation angle of the recorded video. The value can only be 0, 90, 180, or 270. |
| location | [Location](#location) | No | Geographical location of the recorded video. |
......@@ -2606,13 +2608,14 @@ For details about the error codes, see [Media Error Codes](../errorcodes/errorco
**Example**
```js
// Configure the parameters based on those supported by the hardware device.
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : 'audio/mp4a-latm',
audioSampleRate : 48000,
fileFormat : 'mp4',
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : 'video/mp4v-es',
videoFrameWidth : 640,
videoFrameHeight : 480,
......@@ -2676,13 +2679,14 @@ For details about the error codes, see [Media Error Codes](../errorcodes/errorco
**Example**
```js
// Configure the parameters based on those supported by the hardware device.
let videoProfile = {
audioBitrate : 48000,
audioChannels : 2,
audioCodec : 'audio/mp4a-latm',
audioSampleRate : 48000,
fileFormat : 'mp4',
videoBitrate : 48000,
videoBitrate : 2000000,
videoCodec : 'video/mp4v-es',
videoFrameWidth : 640,
videoFrameHeight : 480,
......@@ -3801,7 +3805,7 @@ audioPlayer.on('error', (error) => { // Set the 'error' event callback
console.info(`audio error called, error: ${error}`);
});
// Set the FD (local playback) of the video file selected by the user.
// Set the FD (local playback) 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';
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或