media

Start from API_LEVEL 3.0 . Please refer to API_LEVEL.

The Media multimedia module includes a player and recorder with the ability to record and play audio.

create

Creating multimedia control objects

Pass in the creation type to create a Player object or a Recorder Record object

create(id: number): Player | Record

id Value	Description
id.PLAYER	Player
id.RECORDER	Recorder

import { create, id } from '@zos/media'

const player = create(id.PLAYER)

General methods and properties

tip

Player and Record have common general methods and properties

start

Start playback/recording

start(): void

stop

Stop playback/recording

stop(): void

addEventListener

Event listener, used to listen to the status of the player/recorder, when the status changes, it will trigger the callback callback function

addEventListener(callback: function): void

Player Interface

setSource

Before starting playback, set the playback parameters and related encoding parameters

setSource(source: number, obj: object): void

The value of source supports player.source.FILE.

FILEplays the specified file, supportingMP3andOpus` formats, with the following obj parameter type

Properties	Description	Required	Type
file	File path, default relative to the applet assets directory. You can play the audio files downloaded by the applet via data:// directed to the applet data directory	YES	string

prepare

Set up the player to enter the preparation phase, cache multimedia data, etc., and return the results via the status listener

prepare(): void

import { create, id } from '@zos/media'

const player = create(id.PLAYER)

player.addEventListener(player.event.PREPARE, function (result) {
  if (result) {
    console.log('=== prepare succeed ===')
    player.start()
  } else {
    console.log('=== prepare fail ===')
    player.release()
  }
})

getDuration

Get the total duration of the currently playing media file, in seconds, return 0 means invalid

getDuration(): number

getVolume

Get the current playback volume value, range [0 - 100]

getVolume(): number

setVolume

Set the playback volume value, the range [0 - 100], the result range whether the setting is successful, true means the setting is successful

setVolume(vol: number): boolean

getTitle

Gets the title of the currently playing media file and returns' undefined 'when the call fails

getTitle(): string | undefined

getArtist

Gets the artist of the currently playing media file and returns' undefined 'when the call fails

getArtist(): string | undefined

getMediaInfo

Get the title, artist, and duration of the current media file

getMediaInfo(): MediaInfo

Property	Description	Type
title	File name	string|undefined
artist	Artist	string|undefined
duration	File duration, which can be obtained only if the player is in the 'PREPARED' state	number

release

Release player hardware resources after playback has stopped

release(): void

getStatus

Get player status

getStatus(): number

Return value meaning refer to player.state

player.event

Types of events that the player supports to listen to

Event Value	Description
player.event.PREPARE	Asynchronous result listener for the prepare interface, callback function (result: boolean) => void, parameter result indicates success or failure
player.event.COMPLETE	After the audio starts playing normally, the COMPLETE event can be listened to when the audio file or audio data has finished playing

player.state

Player Status Enumeration

State Value	Description
player.state.IDLE	Initial state
player.state.INITIALIZED	The state after setSource
player.state.PREPARING	Status after the prepare call, before PREPARED
player.state.PREPARED	prepare status after success
player.state.STARTED	Status after starting playback
player.state.PAUSED	Status when playback is paused
player.state.STOPPED	Status after stopping playback

Record Interface

Audio recorder supports recording audio to files

setFormat

setFormat(codec: number, param: object): void

codec Reference codec value

codec Value	Description
codec.OPUS	Opus Code Type

param Type

Properties	Description	Required	Type
target_file	When recording to a file, specify the path to save the audio, support the data directory of the applet, such as: data://record_file.opus	YES	string

Code Examples

// Player
const player = hmMedia.create(hmMedia.id.PLAYER)

player.addEventListener(player.event.PREPARE, function (result) {
  if (result) {
    console.log('=== prepare succeed ===')
    player.start()
  } else {
    console.log('=== prepare fail ===')
    player.release()
  }
})

player.addEventListener(player.event.COMPLETE, function (result) {
  console.log('=== play end ===')
  player.stop()
  player.release()
})

player.setSource(player.source.FILE, { file: '08-15s-16000-1ch.opus' })

// User control
player.prepare()
player.pause()
player.resume()
player.stop()
player.release()

// Recorder
const recorder = hmMedia.create(hmMedia.id.RECORDER)

recorder.setFormat(hmMedia.codec.OPUS, {
  target_file: 'data://record_file.opus'
})

// start
recorder.start()

// stop
recorder.stop()