classroom-instruments/src/views/attend-class/component/audio-pay.tsx

import {
  defineComponent,
  reactive,
  ref,
  nextTick,
  onMounted,
  watch
} from 'vue';
import styles from './audio.module.less';
import iconplay from '../image/icon-pause.png';
import iconpause from '../image/icon-play.png';
import iconReplay from '../image/icon-replay.png';
import { NSlider } from 'naive-ui';
import Vudio from 'vudio.js';
import tickMp3 from '../image/tick.mp3';

export default defineComponent({
  name: 'audio-play',
  props: {
    item: {
      type: Object,
      default: () => {
        return {};
      }
    },
    activeStatus: {
      type: Boolean,
      default: false
    },
    isEmtry: {
      type: Boolean,
      default: false
    },
    imagePos: {
      type: String,
      default: 'left'
    }
  },
  emits: ['loadedmetadata', 'togglePlay', 'ended', 'reset'],
  setup(props, { emit, expose }) {
    const audioForms = reactive({
      paused: true,
      currentTimeNum: 0,
      currentTime: '00:00',
      durationNum: 0,
      duration: '00:00',
      showBar: true,
      afterMa3: true,
      count: 0,
      previousBytesLoaded: 0,
      previousTime: Date.now()
    });
    const canvas: any = ref();
    const audio: any = ref();
    let vudio: any = null;

    // 切换音频播放
    const onToggleAudio = (e?: any) => {
      e?.stopPropagation();
      // console.log(audio.value.paused, 'audio.value.paused');
      if (audio.value.paused) {
        audio.value.play();
        audioForms.afterMa3 = false;
      } else {
        audio.value?.pause();
      }
      audioForms.paused = audio.value?.paused;
      e?.target?.focus();
      emit('togglePlay', audioForms.paused);
    };

    const onInit = (audio: undefined, canvas: undefined) => {
      if (!vudio) {
        vudio = new Vudio(audio, canvas, {
          effect: 'waveform',
          accuracy: 256,
          width: 1024,
          height: 600,
          waveform: {
            maxHeight: 200,
            color: [
              [0, '#44D1FF'],
              [0.5, '#44D1FF'],
              [0.5, '#198CFE'],
              [1, '#198CFE']
            ],
            prettify: false
          }
        });
        vudio.dance();
      }
    };

    // 对时间进行格式化
    const timeFormat = (num: number) => {
      if (num > 0) {
        const m = Math.floor(num / 60);
        const s = num % 60;
        return (m < 10 ? '0' + m : m) + ':' + (s < 10 ? '0' + s : s);
      } else {
        return '00:00';
      }
    };

    //
    const toggleHideControl = (isShow: false) => {
      audioForms.showBar = isShow;
    };

    const onReplay = () => {
      if (!audio.value) return;
      audio.value.currentTime = 0;
    };

    let vudio1 = null;
    const canvas1: any = ref();
    const audio1: any = ref();
    nextTick(() => {
      vudio1 = new Vudio(audio1.value, canvas1.value, {
        effect: 'waveform',
        accuracy: 256,
        width: 1024,
        height: 600,
        waveform: {
          maxHeight: 200,
          color: [
            [0, '#44D1FF'],
            [0.5, '#44D1FF'],
            [0.5, '#198CFE'],
            [1, '#198CFE']
          ],
          prettify: false
        }
      });
      vudio1.dance();
    });

    watch(
      () => props.activeStatus,
      (val: any) => {
        // console.log(val, 'val');
        audioForms.count = 0;
        if (val && props.item.autoPlay) {
          vudio = null;
          onToggleAudio();
        } else {
          audio.value.pause();
        }
      }
    );

    // onMounted(() => {
    //   console.log(props.item, 'eeeee');
    // });

    expose({
      toggleHideControl
    });

    return () => (
      <div class={styles.audioWrap}>
        <div class={styles.audioContainer}>
          <audio
            ref={audio}
            crossorigin="anonymous"
            src={props.item.content + '?time=1'}
            onEnded={() => {
              audioForms.paused = true;
              emit('ended');
            }}
            onTimeupdate={() => {
              audioForms.currentTime = timeFormat(
                Math.round(audio.value?.currentTime || 0)
              );
              audioForms.currentTimeNum = audio.value?.currentTime || 0;

              if (audioForms.count <= 1) {
                audioForms.count += 1;
                onInit(audio.value, canvas.value);
              }
            }}
            onLoadedmetadata={() => {
              audioForms.duration = timeFormat(
                Math.round(audio.value?.duration)
              );
              audioForms.durationNum = audio.value?.duration;

              if (props.item.autoPlay && audio.value && props.activeStatus) {
                // audio.value.play();
                onToggleAudio();
              }
              if (audio.value) {
                audio.value.stop = () => {
                  audio.value?.pause();
                  audioForms.paused = true;
                  emit('togglePlay', audioForms.paused);
                };
                audio.value.onPlay = () => {
                  audio.value?.play();
                  audioForms.paused = false;
                  onInit(audio.value, canvas.value);
                  emit('togglePlay', audioForms.paused);
                };
              }

              emit('loadedmetadata', audio.value);
            }}
            onProgress={(e: any) => {
              console.log(e, 'loadedmetadata onProgress');
              const currentTime = Date.now();
              const videoElement = e.target;
              console.log(videoElement, audio.value.buffered);
              const currentBytesLoaded = videoElement.buffered.length
                ? videoElement.buffered.end(0) * videoElement.duration
                : 0;

              if (currentBytesLoaded > audioForms.previousBytesLoaded) {
                const timeDiff = (currentTime - audioForms.previousTime) / 1000; // Time difference in seconds
                const bytesDiff =
                  currentBytesLoaded - audioForms.previousBytesLoaded; // Bytes downloaded since last check
                const speed = bytesDiff / timeDiff; // Bytes per second

                const speedInKbps = (speed / 1024).toFixed(2); // Convert to KB/s

                // speedDisplay.textContent = `Download speed: ${speedInKbps} KB/s`;
                console.log(`Download speed: ${speedInKbps} KB/s`);

                audioForms.previousBytesLoaded = currentBytesLoaded;
                audioForms.previousTime = currentTime;
              }
            }}></audio>

          <canvas ref={canvas}></canvas>

          {audioForms.afterMa3 && (
            <div class={styles.tempVudio}>
              <audio ref={audio1} src={tickMp3} />
              <canvas ref={canvas1}></canvas>
            </div>
          )}
        </div>

        <div
          class={[
            styles.controls,
            audioForms.showBar ? '' : styles.sectionAnimate
          ]}
          onClick={(e: MouseEvent) => {
            e.stopPropagation();
            emit('reset');
          }}>
          <div class={styles.slider}>
            <NSlider
              value={audioForms.currentTimeNum}
              step={0.01}
              max={audioForms.durationNum}
              tooltip={false}
              onUpdate:value={(val: number) => {
                audio.value.currentTime = val;
                audioForms.currentTimeNum = val;
                audioForms.currentTime = timeFormat(Math.round(val || 0));
              }}
            />
          </div>
          <div class={styles.tools}>
            {props.imagePos === 'right' ? (
              <>
                <div class={styles.actions}>
                  <div class={styles.time}>
                    <div
                      class="plyr__time plyr__time--current"
                      aria-label="Current time">
                      {audioForms.currentTime}
                    </div>
                    <span class={styles.line}>/</span>
                    <div
                      class="plyr__time plyr__time--duration"
                      aria-label="Duration">
                      {audioForms.duration}
                    </div>
                  </div>
                </div>
                <div class={styles.actions}>
                  <div class={styles.actionWrap}>
                    <button class={styles.iconReplay} onClick={onReplay}>
                      <img src={iconReplay} />
                    </button>
                    <div class={styles.actionBtn} onClick={onToggleAudio}>
                      {audioForms.paused ? (
                        <img class={styles.playIcon} src={iconplay} />
                      ) : (
                        <img class={styles.playIcon} src={iconpause} />
                      )}
                    </div>

                    <div class={styles.downloadSpeed}>37.8M/s</div>
                  </div>
                </div>
              </>
            ) : (
              <>
                <div class={styles.actions}>
                  <div class={styles.actionWrap}>
                    <div class={styles.actionBtn} onClick={onToggleAudio}>
                      {audioForms.paused ? (
                        <img class={styles.playIcon} src={iconplay} />
                      ) : (
                        <img class={styles.playIcon} src={iconpause} />
                      )}
                    </div>
                    <button class={styles.iconReplay} onClick={onReplay}>
                      <img src={iconReplay} />
                    </button>
                    <div class={styles.downloadSpeed}>37.8M/s</div>
                  </div>
                </div>
                <div class={styles.actions}>
                  <div class={styles.time}>
                    <div
                      class="plyr__time plyr__time--current"
                      aria-label="Current time">
                      {audioForms.currentTime}
                    </div>
                    <span class={styles.line}>/</span>
                    <div
                      class="plyr__time plyr__time--duration"
                      aria-label="Duration">
                      {audioForms.duration}
                    </div>
                  </div>
                </div>
              </>
            )}
          </div>
        </div>
      </div>
    );
  }
});