新增 音频播放测试

This commit is contained in:
DevWiki 2024-05-08 20:21:18 +08:00
parent 8b05328767
commit 03b4d85563
3 changed files with 145 additions and 1 deletions

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@ -0,0 +1,144 @@
import audio from '@ohos.multimedia.audio';
import { BusinessError } from '@ohos.base';
import fs from '@ohos.file.fs';
const TAG = 'AudioRendererDemo';
class Options {
offset?: number;
length?: number;
}
let context = getContext(this);
let bufferSize: number = 0;
let renderModel: audio.AudioRenderer | undefined = undefined;
let audioStreamInfo: audio.AudioStreamInfo = {
samplingRate: audio.AudioSamplingRate.SAMPLE_RATE_48000, // 采样率
channels: audio.AudioChannel.CHANNEL_2, // 通道
sampleFormat: audio.AudioSampleFormat.SAMPLE_FORMAT_S16LE, // 采样格式
encodingType: audio.AudioEncodingType.ENCODING_TYPE_RAW // 编码格式
}
let audioRendererInfo: audio.AudioRendererInfo = {
usage: audio.StreamUsage.STREAM_USAGE_MUSIC, // 音频流使用类型
rendererFlags: 0 // 音频渲染器标志
}
let audioRendererOptions: audio.AudioRendererOptions = {
streamInfo: audioStreamInfo,
rendererInfo: audioRendererInfo
}
let writeDataCallback = (buffer: ArrayBuffer) => {
let raw = $rawfile('yangzhou.amr')
let path = getContext().resourceManager.getRawFile('').then((file) => {
})
//确保该路径下存在该资源
let filePath = path + '/StarWars10s-2C-48000-4SW.wav';
let file: fs.File = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let options: Options = {
offset: bufferSize,
length: buffer.byteLength
}
fs.readSync(file.fd, buffer, options);
bufferSize += buffer.byteLength;
}
// 初始化,创建实例,设置监听事件
function init() {
audio.createAudioRenderer(audioRendererOptions, (err, renderer) => { // 创建AudioRenderer实例
if (!err) {
console.info(`${TAG}: creating AudioRenderer success`);
renderModel = renderer;
if (renderModel !== undefined) {
(renderModel as audio.AudioRenderer).on('writeData', writeDataCallback);
}
} else {
console.info(`${TAG}: creating AudioRenderer failed, error: ${err.message}`);
}
});
}
// 开始一次音频渲染
function start() {
if (renderModel !== undefined) {
let stateGroup = [audio.AudioState.STATE_PREPARED, audio.AudioState.STATE_PAUSED, audio.AudioState.STATE_STOPPED];
if (stateGroup.indexOf((renderModel as audio.AudioRenderer).state.valueOf()) === -1) { // 当且仅当状态为prepared、paused和stopped之一时才能启动渲染
console.error(TAG + 'start failed');
return;
}
// 启动渲染
(renderModel as audio.AudioRenderer).start((err: BusinessError) => {
if (err) {
console.error('Renderer start failed.');
} else {
console.info('Renderer start success.');
}
});
}
}
// 暂停渲染
function pause() {
if (renderModel !== undefined) {
// 只有渲染器状态为running的时候才能暂停
if ((renderModel as audio.AudioRenderer).state.valueOf() !== audio.AudioState.STATE_RUNNING) {
console.info('Renderer is not running');
return;
}
// 暂停渲染
(renderModel as audio.AudioRenderer).pause((err: BusinessError) => {
if (err) {
console.error('Renderer pause failed.');
} else {
console.info('Renderer pause success.');
}
});
}
}
// 停止渲染
async function stop() {
if (renderModel !== undefined) {
// 只有渲染器状态为running或paused的时候才可以停止
if ((renderModel as audio.AudioRenderer).state.valueOf() !== audio.AudioState.STATE_RUNNING && (renderModel as audio.AudioRenderer).state.valueOf() !== audio.AudioState.STATE_PAUSED) {
console.info('Renderer is not running or paused.');
return;
}
// 停止渲染
(renderModel as audio.AudioRenderer).stop((err: BusinessError) => {
if (err) {
console.error('Renderer stop failed.');
} else {
console.info('Renderer stop success.');
}
});
}
}
// 销毁实例,释放资源
async function release() {
if (renderModel !== undefined) {
// 渲染器状态不是released状态才能release
if (renderModel.state.valueOf() === audio.AudioState.STATE_RELEASED) {
console.info('Renderer already released');
return;
}
// 释放资源
(renderModel as audio.AudioRenderer).release((err: BusinessError) => {
if (err) {
console.error('Renderer release failed.');
} else {
console.info('Renderer release success.');
}
});
}
}
@Entry
@Component
export struct AudioPlayerPage {
build() {
}
}

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@ -4,7 +4,7 @@ import { Log } from './Log';
export class ScreenUtil { export class ScreenUtil {
// TODO: 工具待抽离, key统一定义 // TODO: 工具待抽离, key统一定义
static readonly isPortraitKey: string = "xy_screen_is_portrait"; static readonly isPortraitKey: string = "screen_is_portrait";
private static instance: ScreenUtil; private static instance: ScreenUtil;
public width: number = 0 public width: number = 0
public height: number = 0 public height: number = 0