HarmonyOS 录制相关demo

可以参考视频录制文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/camera-recording-case-V5

参考代码：

import { media } from '@kit.MediaKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { abilityAccessCtrl, PermissionRequestResult,Permissions,bundleManager,common} from '@kit.AbilityKit';
import { camera } from '@kit.CameraKit';
import { photoAccessHelper } from '@kit.MediaLibraryKit';
import { fileIo as fs } from '@kit.CoreFileKit';

@Entry
@Component
struct XComponentPage {
  // 创建XComponentController
  mXComponentController: XComponentController = new XComponentController;
  surfaceId: string = '';
  @State format: string = 'mm:ss'
  textTimerController: TextTimerController = new TextTimerController()
  @State isShow:boolean = true
  @Builder
  timer(){
    Flex({alignItems:ItemAlign.Center,justifyContent:FlexAlign.Center}){
      TextTimer({ isCountDown: true, count: 3000, controller: this.textTimerController })
        .format(this.format)
        .fontColor(Color.White)
        .fontSize(50)
        .onTimer(async (utc: number, elapsedTime: number) => {
          console.info('textTimer notCountDown utc is：' + utc + ', elapsedTime: ' + elapsedTime)
          if(elapsedTime === 3){
            console.info("videoRecorderDemo")
            await videoRecording(getContext(),this.surfaceId)
          }
        })
    }
    .visibility(this.isShow?Visibility.Visible:Visibility.Hidden)
    .width("100%")
    .height("100%")
  }

  build() {
    Flex({ wrap: FlexWrap.Wrap }) {
      // 创建XComponent
      Row(){
        XComponent({
          id: '',
          type: 'surface',
          libraryname: '',
          controller: this.mXComponentController
        })
          .onLoad(() => {
            console.log(`loading start`);
            // 设置Surface宽高（1920*1080），预览尺寸设置参考前面 previewProfilesArray 获取的当前设备所支持的预览分辨率大小去设置
            // 预览流与录像输出流的分辨率的宽高比要保持一致1344x2772
            // this.mXComponentController.setXComponentSurfaceSize({ surfaceWidth: 640, surfaceHeight: 480 });
            // 获取Surface ID
            this.surfaceId = this.mXComponentController.getXComponentSurfaceId();
            console.log(`loading end surfaceId = ${JSON.stringify(this.surfaceId)}`);
          })
      }
      .width('100%')
      .height(480)
      .overlay(this.timer())
      Column(){
        SaveButton()
          .onClick(async () => {
            let permissions: Permissions[] = ['ohos.permission.CAMERA','ohos.permission.MICROPHONE']
            let atManager = abilityAccessCtrl.createAtManager();
            await atManager.requestPermissionsFromUser(getContext(), permissions);
            // videoRecording(getContext(), this.surfaceId)//
            this.textTimerController.reset()
            this.textTimerController.start()
          })
      }.width("100%").padding({top:10})
    }
  }
}

async function videoRecording(context: common.Context, surfaceId: string): Promise<void> {
  // 创建CameraManager对象
  let cameraManager: camera.CameraManager = camera.getCameraManager(context);
  if (!cameraManager) {
    console.error("camera.getCameraManager error");
    return;
  }

  // 监听相机状态变化
  cameraManager.on('cameraStatus', (err: BusinessError, cameraStatusInfo: camera.CameraStatusInfo) => {
    if (err !== undefined && err.code !== 0) {
      console.error('cameraStatus with errorCode = ' + err.code);
      return;
    }
    console.info(`camera : ${cameraStatusInfo.camera.cameraId}`);
    console.info(`status: ${cameraStatusInfo.status}`);
  });

  // 获取相机列表
  let cameraArray: Array<camera.CameraDevice> = [];
  try {
    cameraArray = cameraManager.getSupportedCameras();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`getSupportedCameras call failed. error code: ${err.code}`);
  }

  if (cameraArray.length <= 0) {
    console.error("cameraManager.getSupportedCameras error");
    return;
  }

  // 获取支持的模式类型
  let sceneModes: Array<camera.SceneMode> = cameraManager.getSupportedSceneModes(cameraArray[0]);
  let isSupportVideoMode: boolean = sceneModes.indexOf(camera.SceneMode.NORMAL_VIDEO) >= 0;
  if (!isSupportVideoMode) {
    console.error('video mode not support');
    return;
  }

  // 获取相机设备支持的输出流能力
  let cameraOutputCap: camera.CameraOutputCapability = cameraManager.getSupportedOutputCapability(cameraArray[0], camera.SceneMode.NORMAL_VIDEO);
  if (!cameraOutputCap) {
    console.error("cameraManager.getSupportedOutputCapability error")
    return;
  }
  console.info("outputCapability: " + JSON.stringify(cameraOutputCap));

  let previewProfilesArray: Array<camera.Profile> = cameraOutputCap.previewProfiles;
  if (!previewProfilesArray) {
    console.error("createOutput previewProfilesArray == null || undefined");
  }

  let photoProfilesArray: Array<camera.Profile> = cameraOutputCap.photoProfiles;
  if (!photoProfilesArray) {
    console.error("createOutput photoProfilesArray == null || undefined");
  }

  let videoProfilesArray: Array<camera.VideoProfile> = cameraOutputCap.videoProfiles;
  if (!videoProfilesArray) {
    console.error("createOutput videoProfilesArray == null || undefined");
  }
  // videoProfile的宽高需要与AVRecorderProfile的宽高保持一致，并且需要使用AVRecorderProfile锁支持的宽高
  let videoSize: camera.Size = {
    width: 640,
    height: 480
  }
  let videoProfile: undefined | camera.VideoProfile = videoProfilesArray.find((profile: camera.VideoProfile) => {
    return profile.size.width === videoSize.width && profile.size.height === videoSize.height;
  });
  if (!videoProfile) {
    console.error('videoProfile is not found');
    return;
  }
  // 配置参数以实际硬件设备支持的范围为准
  let aVRecorderProfile: media.AVRecorderProfile = {
    audioBitrate: 48000,
    audioChannels: 2,
    audioCodec: media.CodecMimeType.AUDIO_AAC,
    audioSampleRate: 48000,
    fileFormat: media.ContainerFormatType.CFT_MPEG_4,
    videoBitrate: 2000000,
    videoCodec: media.CodecMimeType.VIDEO_AVC,
    videoFrameWidth: videoSize.width,
    videoFrameHeight: videoSize.height,
    videoFrameRate: 30
  };
  let options: photoAccessHelper.CreateOptions = {
    title: Date.now().toString()
  };
  let accessHelper: photoAccessHelper.PhotoAccessHelper = photoAccessHelper.getPhotoAccessHelper(context);
  let videoUri: string = await accessHelper.createAsset(photoAccessHelper.PhotoType.VIDEO, 'mp4', options);
  console.info("videoUri:",videoUri)
  let file: fs.File = fs.openSync(videoUri, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
  let aVRecorderConfig: media.AVRecorderConfig = {
    audioSourceType: media.AudioSourceType.AUDIO_SOURCE_TYPE_MIC,
    videoSourceType: media.VideoSourceType.VIDEO_SOURCE_TYPE_SURFACE_YUV,
    profile: aVRecorderProfile,
    url: `fd://${file.fd.toString()}`, // 文件需先由调用者创建，赋予读写权限，将文件fd传给此参数，eg.fd://45--file:///data/media/01.mp4
    rotation: 0, // 合理值0、90、180、270，非合理值prepare接口将报错
    location: { latitude: 30, longitude: 130 }
  };

  let avRecorder: media.AVRecorder | undefined = undefined;
  try {
    avRecorder = await media.createAVRecorder();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`createAVRecorder call failed. error code: ${err.code}`);
  }

  if (avRecorder === undefined) {
    return;
  }

  try {
    await avRecorder.prepare(aVRecorderConfig);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`prepare call failed. error code: ${err.code}`);
  }

  let videoSurfaceId: string | undefined = undefined; // 该surfaceID用于传递给相机接口创造videoOutput
  try {
    videoSurfaceId = await avRecorder.getInputSurface();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`getInputSurface call failed. error code: ${err.code}`);
  }
  if (videoSurfaceId === undefined) {
    return;
  }
  // 创建VideoOutput对象
  let videoOutput: camera.VideoOutput | undefined = undefined;
  try {
    videoOutput = cameraManager.createVideoOutput(videoProfile, videoSurfaceId);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to create the videoOutput instance. error: ${JSON.stringify(err)}`);
  }
  if (videoOutput === undefined) {
    return;
  }
  // 监听视频输出错误信息
  videoOutput.on('error', (error: BusinessError) => {
    console.error(`Preview output error code: ${error.code}`);
  });

  //创建会话
  let videoSession: camera.VideoSession | undefined = undefined;
  try {
    videoSession = cameraManager.createSession(camera.SceneMode.NORMAL_VIDEO) as camera.VideoSession;
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to create the session instance. error: ${JSON.stringify(err)}`);
  }
  if (videoSession === undefined) {
    return;
  }
  // 监听session错误信息
  videoSession.on('error', (error: BusinessError) => {
    console.error(`Video session error code: ${error.code}`);
  });

  // 开始配置会话
  try {
    videoSession.beginConfig();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to beginConfig. error: ${JSON.stringify(err)}`);
  }

  // 创建相机输入流
  let cameraInput: camera.CameraInput | undefined = undefined;
  try {
    cameraInput = cameraManager.createCameraInput(cameraArray[0]);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to createCameraInput. error: ${JSON.stringify(err)}`);
  }
  if (cameraInput === undefined) {
    return;
  }
  // 监听cameraInput错误信息
  let cameraDevice: camera.CameraDevice = cameraArray[0];
  cameraInput.on('error', cameraDevice, (error: BusinessError) => {
    console.error(`Camera input error code: ${error.code}`);
  });

  // 打开相机
  try {
    await cameraInput.open();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to open cameraInput. error: ${JSON.stringify(err)}`);
  }

  // 向会话中添加相机输入流
  try {
    videoSession.addInput(cameraInput);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to add cameraInput. error: ${JSON.stringify(err)}`);
  }

  // 创建预览输出流，其中参数 surfaceId 参考下面 XComponent 组件，预览流为XComponent组件提供的surface
  let previewOutput: camera.PreviewOutput | undefined = undefined;
  try {
    previewOutput = cameraManager.createPreviewOutput(previewProfilesArray[0], surfaceId);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to create the PreviewOutput instance. error: ${JSON.stringify(err)}`);
  }

  if (previewOutput === undefined) {
    return;
  }
  // 向会话中添加预览输出流
  try {
    videoSession.addOutput(previewOutput);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to add previewOutput. error: ${JSON.stringify(err)}`);
  }

  // 向会话中添加录像输出流
  try {
    videoSession.addOutput(videoOutput);
  } catch (error) {
    let err = error as BusinessError;
    console.error(`Failed to add videoOutput. error: ${JSON.stringify(err)}`);
  }

  // 提交会话配置
  try {
    await videoSession.commitConfig();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`videoSession commitConfig error: ${JSON.stringify(err)}`);
  }

  // 启动会话
  try {
    await videoSession.start();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`videoSession start error: ${JSON.stringify(err)}`);
  }

  // 启动录像输出流
  videoOutput.start((err: BusinessError) => {
    if (err) {
      console.error(`Failed to start the video output. error: ${JSON.stringify(err)}`);
      return;
    }
    console.info('Callback invoked to indicate the video output start success.');
  });

  // 开始录像
  try {
    await avRecorder.start();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`avRecorder start error: ${JSON.stringify(err)}`);
  }

  // 停止录像输出流
  videoOutput.stop((err: BusinessError) => {
    if (err) {
      console.error(`Failed to stop the video output. error: ${JSON.stringify(err)}`);
      return;
    }
    console.info('Callback invoked to indicate the video output stop success.');
  });

  // 停止录像
  try {
    await avRecorder.stop();
  } catch (error) {
    let err = error as BusinessError;
    console.error(`avRecorder stop error: ${JSON.stringify(err)}`);
  }

  // 停止当前会话
  videoSession.stop();

  // 关闭文件
  fs.closeSync(file);

  // 释放相机输入流
  cameraInput.close();

  // 释放预览输出流
  previewOutput.release();

  // 释放录像输出流
  videoOutput.release();

  // 释放会话
  videoSession.release();

  // 会话置空
  videoSession = undefined;
}