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https://github.com/kevin-DL/vue-audio-recorder.git
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Add existing code
This commit is contained in:
Gennady Grishkovtsov
321
src/audio-recorder.vue
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321
src/audio-recorder.vue
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<style lang="scss">
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.ar {
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width: 420px;
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font-family: 'Roboto', sans-serif;
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border-radius: 16px;
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background-color: #FAFAFA;
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box-shadow: 0 4px 18px 0 rgba(0,0,0,0.17);
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position: relative;
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box-sizing: content-box;
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&-content {
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padding: 16px;
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display: flex;
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flex-direction: column;
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align-items: center;
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}
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&-records {
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height: 138px;
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padding-top: 1px;
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overflow-y: auto;
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margin-bottom: 20px;
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&__record {
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width: 320px;
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padding: 0 10px;
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margin: 0 auto;
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line-height: 45px;
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display: flex;
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justify-content: space-between;
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border-bottom: 1px solid #E8E8E8;
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&--selected {
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border: 1px solid #E8E8E8;
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border-radius: 24px;
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background-color: #FFFFFF;
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margin-top: -1px;
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padding: 0 34px;
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}
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}
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}
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&-recorder {
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position: relative;
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display: flex;
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flex-direction: column;
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align-items: center;
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&__duration {
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color: #AEAEAE;
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font-size: 32px;
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font-weight: 500;
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margin-top: 20px;
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margin-bottom: 16px;
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}
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&__stop {
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position: absolute;
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top: 10px;
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right: -52px;
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}
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&__time-limit {
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position: absolute;
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color: #AEAEAE;
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font-size: 12px;
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top: 128px;
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}
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&__records-limit {
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position: absolute;
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color: #AEAEAE;
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font-size: 12px;
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top: 78px;
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}
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}
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&-spinner {
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display: flex;
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height: 30px;
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position: absolute;
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left: 0;
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right: 0;
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top: 0;
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bottom: 0;
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margin: auto;
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width: 144px;
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z-index: 10;
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&__dot {
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display: block;
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margin: 0 8px;
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border-radius: 50%;
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width: 30px;
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height: 30px;
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background: #05CBCD;
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animation-name: blink;
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animation-duration: 1.4s;
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animation-iteration-count: infinite;
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animation-fill-mode: both;
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&:nth-child(2) { animation-delay: .2s; }
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&:nth-child(3) { animation-delay: .4s; }
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@keyframes blink {
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0% { opacity: .2; }
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20% { opacity: 1; }
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100% { opacity: .2; }
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}
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}
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}
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&__text {
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color: rgba(84,84,84,0.5);
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font-size: 16px;
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}
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&__blur {
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filter: blur(2px);
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opacity: 0.7;
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}
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&__overlay {
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position: absolute;
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width: 100%;
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height: 100%;
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z-index: 10;
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}
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&__upload-status {
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text-align: center;
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font-size: 10px;
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padding: 2px;
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letter-spacing: 1px;
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position: absolute;
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bottom: 0;
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&--success {
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color: green;
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}
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&--fail {
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color: red;
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}
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}
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}
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</style>
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<template>
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<div class="ar">
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<div class="ar__overlay" v-if="isUploading"></div>
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<div class="ar-spinner" v-if="isUploading">
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<div class="ar-spinner__dot"></div>
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<div class="ar-spinner__dot"></div>
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<div class="ar-spinner__dot"></div>
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</div>
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<div class="ar-content" :class="{'ar__blur': isUploading}">
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<div class="ar-recorder">
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<icon-button
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size="lg"
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:name="iconButtonType"
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:class="{
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'ar-icon-button--rec': isRecording,
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'ar-icon-button--pulse': isRecording && volume > 0.02
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}"
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@click.native="toggleRecorder"/>
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<icon-button
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class="ar-recorder__stop"
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name="stop"
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@click.native="stopRecorder"/>
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</div>
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<div class="ar-recorder__records-limit" v-if="attempts">Attempts: {{attemptsLeft}}/{{attempts}}</div>
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<div class="ar-recorder__duration">{{recordedTime}}</div>
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<div class="ar-recorder__time-limit" v-if="time">Record duration is limited: {{time}}m</div>
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<div class="ar-records">
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<div
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class="ar-records__record"
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:class="{'ar-records__record--selected': idx === selectedRecord.idx}"
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v-for="(record, idx) in recordList"
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@click="selectRecord(idx, record)">
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<div class="ar__text">Record {{idx + 1}}</div>
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<div class="ar__text">{{record.duration}}</div>
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</div>
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</div>
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<record-player
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:record="selectedRecord"
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:upload-url="uploadUrl"
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:start-upload="startUpload"
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:successful-upload="successfulUpload"
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:failed-upload="failedUpload"
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@on-start-upload="onStartUpload"
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@on-end-upload="onEndUpload"/>
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<div :class="uploadStatusClasses" v-if="uploadStatus">{{message}}</div>
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</div>
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</div>
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</template>
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<script>
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import IconButton from './components/icon-button.vue'
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import Recorder from './lib/recorder.js'
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import RecordPlayer from './components/record-player.vue'
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import { convertTimeMMSS } from './lib/utils.js'
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export default {
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props: {
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attempts: { type: Number },
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time: { type: Number },
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uploadUrl: { type: String },
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attemptsLimit: { type: Function },
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failedUpload: { type: Function },
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micFailed: { type: Function },
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startRecord: { type: Function },
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startUpload: { type: Function },
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stopRecord: { type: Function },
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successfulUpload: { type: Function },
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successfulUploadMsg: { type: String, default: 'Upload successful' },
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failedUploadMsg: { type: String, default: 'Upload fail' }
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},
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data () {
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return {
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isUploading: false,
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recorder: new Recorder({
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afterStop: () => {
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this.recordList = this.recorder.recordList()
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if (this.stopRecord) {
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this.stopRecord('stop record')
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}
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},
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attempts: this.attempts,
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time: this.time
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}),
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recordList: [],
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selectedRecord: {},
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uploadStatus: null
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}
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},
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components: {
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IconButton,
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RecordPlayer
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},
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methods: {
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toggleRecorder () {
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if (this.attempts && this.recorder.records.length >= this.attempts) {
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return
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}
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if (!this.isRecording || (this.isRecording && this.isPause)) {
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this.recorder.start()
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if (this.startRecord) {
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this.startRecord('start record')
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}
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} else {
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this.recorder.pause()
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if (this.startRecord) {
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this.startRecord('pause record')
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}
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}
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},
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stopRecorder () {
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if (!this.isRecording) {
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return
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}
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this.recorder.stop()
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},
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selectRecord (idx, record) {
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this.selectedRecord = { idx: idx, url: record.url, blob: record.blob }
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},
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onStartUpload () {
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this.isUploading = true
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},
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onEndUpload (status) {
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this.isUploading = false
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this.uploadStatus = status
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setTimeout(() => {this.uploadStatus = null}, 1500)
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}
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},
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computed: {
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attemptsLeft () {
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return this.attempts - this.recorder.records.length
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},
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iconButtonType () {
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return this.isRecording && this.isPause ? 'mic' : this.isRecording ? 'pause' : 'mic'
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},
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isPause () {
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return this.recorder.isPause
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},
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isRecording () {
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return this.recorder.isRecording
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},
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message () {
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return this.uploadStatus === 'success' ? this.successfulUploadMsg : this.failedUploadMsg
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},
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recordedTime () {
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if (this.time && this.recorder.duration >= this.time * 60) {
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this.stopRecorder()
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}
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return convertTimeMMSS(this.recorder.duration)
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},
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uploadStatusClasses () {
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let classes = ['ar__upload-status']
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classes.push(this.uploadStatus === 'success' ? 'ar__upload-status--success' : 'ar__upload-status--fail')
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return classes.join(' ')
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},
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volume () {
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return parseFloat(this.recorder.volume)
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}
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}
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}
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</script>
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84
src/components/icon-button.vue
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84
src/components/icon-button.vue
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<style lang="scss">
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.ar-icon-button {
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fill: #747474;
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border-radius: 50%;
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border: 1px solid #05CBCD;
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background-color: #FFFFFF;
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padding: 5px;
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cursor: pointer;
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transition: .2s;
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&--rec {
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fill: white;
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background-color: #FF6B64;
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border-color: transparent;
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}
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&--pulse {
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animation: ripple .5s linear infinite;
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@keyframes ripple {
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0% {
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box-shadow:
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0 0 0 0 rgba(red, 0.1),
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0 0 0 1px rgba(red, 0.1),
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0 0 0 5px rgba(red, 0.1);
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}
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100% {
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box-shadow:
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0 0 0 0 rgba(red, 0.1),
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0 0 0 10px rgba(red, 0.1),
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0 0 0 20px rgba(red, 0);
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}
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}
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}
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&--clicked {
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fill: white;
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background-color: #05CBCD;
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}
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&__sm {
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width: 30px;
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height: 30px;
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}
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&__lg {
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width: 45px;
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height: 45px;
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box-shadow: 0 2px 5px 1px rgba(158,158,158,0.5);
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}
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}
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</style>
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<template>
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<div :class="iconClasses" v-html="icons[name]"></div>
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</template>
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<script>
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export default {
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props: {
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name: { type: String },
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size: { type: String, default: 'sm' }
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},
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data: function () {
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return {
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icons: {
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download: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 12v7H5v-7H3v7c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2zm-6 .67l2.59-2.58L17 11.5l-5 5-5-5 1.41-1.41L11 12.67V3h2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>',
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mic: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 14c1.66 0 2.99-1.34 2.99-3L15 5c0-1.66-1.34-3-3-3S9 3.34 9 5v6c0 1.66 1.34 3 3 3zm5.3-3c0 3-2.54 5.1-5.3 5.1S6.7 14 6.7 11H5c0 3.41 2.72 6.23 6 6.72V21h2v-3.28c3.28-.48 6-3.3 6-6.72h-1.7z"/><path d="M0 0h24v24H0z" fill="none"/></svg>',
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pause: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/><path d="M0 0h24v24H0z" fill="none"/></svg>',
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play: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/><path d="M0 0h24v24H0z" fill="none"/></svg>',
|
||||
save: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M17 3H5c-1.11 0-2 .9-2 2v14c0 1.1.89 2 2 2h14c1.1 0 2-.9 2-2V7l-4-4zm-5 16c-1.66 0-3-1.34-3-3s1.34-3 3-3 3 1.34 3 3-1.34 3-3 3zm3-10H5V5h10v4z"/></svg>',
|
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stop: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M6 6h12v12H6z"/></svg>',
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volume: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 9v6h4l5 5V4L7 9H3zm13.5 3c0-1.77-1.02-3.29-2.5-4.03v8.05c1.48-.73 2.5-2.25 2.5-4.02zM14 3.23v2.06c2.89.86 5 3.54 5 6.71s-2.11 5.85-5 6.71v2.06c4.01-.91 7-4.49 7-8.77s-2.99-7.86-7-8.77z"/><path d="M0 0h24v24H0z" fill="none"/></svg>'
|
||||
}
|
||||
}
|
||||
},
|
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computed: {
|
||||
iconClasses () {
|
||||
return ['ar-icon-button', `ar-icon-button__${this.size}`]
|
||||
}
|
||||
}
|
||||
}
|
||||
</script>
|
||||
|
||||
54
src/components/line-control.vue
Normal file
54
src/components/line-control.vue
Normal file
@@ -0,0 +1,54 @@
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||||
<style lang="scss">
|
||||
.ar-line-control {
|
||||
position: relative;
|
||||
|
||||
&__head {
|
||||
position: absolute;
|
||||
height: inherit;
|
||||
background-color: #616161;
|
||||
border-radius: inherit;
|
||||
}
|
||||
}
|
||||
</style>
|
||||
|
||||
<template>
|
||||
<div :ref="refId" class="ar-line-control" @mousedown="onMouseDown">
|
||||
<div class="ar-line-control__head" :style="{width: percentageWidth}"></div>
|
||||
</div>
|
||||
</template>
|
||||
|
||||
<script>
|
||||
import { calculateLineHeadPosition } from '../lib/utils.js'
|
||||
|
||||
export default {
|
||||
props: {
|
||||
refId: { type: String },
|
||||
eventName: { type: String },
|
||||
percentage: { type: Number, default: 0 }
|
||||
},
|
||||
methods: {
|
||||
onMouseDown (ev) {
|
||||
let seekPos = calculateLineHeadPosition(ev, this.$refs[this.refId])
|
||||
this.$emit('changeLineHead', seekPos)
|
||||
document.addEventListener('mousemove', this.onMouseMove)
|
||||
document.addEventListener('mouseup', this.onMouseUp)
|
||||
},
|
||||
onMouseUp (ev) {
|
||||
document.removeEventListener('mouseup', this.onMouseUp)
|
||||
document.removeEventListener('mousemove', this.onMouseMove)
|
||||
let seekPos = calculateLineHeadPosition(ev, this.$refs[this.refId])
|
||||
this.$emit('changeLineHead', seekPos)
|
||||
},
|
||||
onMouseMove (ev) {
|
||||
let seekPos = calculateLineHeadPosition(ev, this.$refs[this.refId])
|
||||
this.$emit('changeLineHead', seekPos)
|
||||
}
|
||||
},
|
||||
computed: {
|
||||
percentageWidth () {
|
||||
let width = this.percentage < 1 ? this.percentage * 100 : this.percentage
|
||||
return `${width}%`
|
||||
}
|
||||
}
|
||||
}
|
||||
</script>
|
||||
227
src/components/record-player.vue
Normal file
227
src/components/record-player.vue
Normal file
@@ -0,0 +1,227 @@
|
||||
<style lang="scss">
|
||||
.ar-player {
|
||||
width: 100%;
|
||||
height: 120px;
|
||||
border: 1px solid #E8E8E8;
|
||||
border-radius: 24px;
|
||||
background-color: #FAFAFA;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
|
||||
&-actions {
|
||||
width: 55%;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: space-around;
|
||||
}
|
||||
|
||||
&-volume {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
line-height: 10px;
|
||||
|
||||
&-bar {
|
||||
width: 50px;
|
||||
height: 8px;
|
||||
background: #E6E6E6;
|
||||
border-radius: 4px;
|
||||
position: relative;
|
||||
}
|
||||
|
||||
&__icon {
|
||||
fill: #747474;
|
||||
width: 24px;
|
||||
height: 24px;
|
||||
border: 0;
|
||||
border-radius: 0;
|
||||
padding: 0;
|
||||
background-color: unset;
|
||||
margin-right: 3px;
|
||||
}
|
||||
}
|
||||
|
||||
&-bar {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
margin-bottom: 2px;
|
||||
}
|
||||
|
||||
&--active {
|
||||
background-color: white;
|
||||
}
|
||||
|
||||
&__progress {
|
||||
width: 160px;
|
||||
height: 8px;
|
||||
border-radius: 5px;
|
||||
background-color: #E6E6E6;
|
||||
margin: 0 8px;
|
||||
}
|
||||
|
||||
&__time {
|
||||
color: rgba(84,84,84,0.5);
|
||||
font-size: 16px;
|
||||
width: 41px;
|
||||
}
|
||||
}
|
||||
</style>
|
||||
|
||||
<template>
|
||||
<div class="ar-player" :class="{'ar-player--active': record.url}">
|
||||
<div class="ar-player-bar">
|
||||
|
||||
<div class="ar-player__time">{{playedTime}}</div>
|
||||
|
||||
<line-control
|
||||
class="ar-player__progress"
|
||||
ref-id="progress"
|
||||
:percentage="progress"
|
||||
@changeLineHead="_onUpdateProgress"/>
|
||||
|
||||
<div class="ar-player__time">{{duration}}</div>
|
||||
|
||||
<div class="ar-player-volume">
|
||||
<icon-button class="ar-player-volume__icon" name="volume"/>
|
||||
<line-control
|
||||
class="ar-player-volume-bar"
|
||||
ref-id="volume"
|
||||
:percentage="volume"
|
||||
@changeLineHead="_onUpdateVolume"/>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="ar-player-actions">
|
||||
<icon-button name="download" @click.native="download"/>
|
||||
<icon-button
|
||||
size="lg"
|
||||
:name="playBtnIcon"
|
||||
:class="{'ar-icon-button--clicked': isPlaying}"
|
||||
@click.native="playback"/>
|
||||
<icon-button name="save" @click.native="upload"/>
|
||||
</div>
|
||||
|
||||
<audio id="audio-recorder-player" :src="record.url"></audio>
|
||||
</div>
|
||||
</template>
|
||||
|
||||
<script>
|
||||
import IconButton from './icon-button.vue'
|
||||
import LineControl from './line-control.vue'
|
||||
import { convertTimeMMSS } from '../lib/utils.js'
|
||||
|
||||
export default {
|
||||
props: {
|
||||
uploadUrl: { type: String },
|
||||
record: { type: Object },
|
||||
startUpload: { type: Function },
|
||||
successfulUpload: { type: Function },
|
||||
failedUpload: { type: Function }
|
||||
},
|
||||
data () {
|
||||
return {
|
||||
isPlaying: false,
|
||||
duration: convertTimeMMSS(0),
|
||||
playedTime: convertTimeMMSS(0),
|
||||
progress: 0,
|
||||
volume: 0.8
|
||||
}
|
||||
},
|
||||
components: {
|
||||
IconButton,
|
||||
LineControl
|
||||
},
|
||||
mounted: function() {
|
||||
this.player = document.getElementById('audio-recorder-player')
|
||||
|
||||
this.player.addEventListener('ended', () => {
|
||||
this.isPlaying = false
|
||||
})
|
||||
|
||||
this.player.addEventListener('loadeddata', (ev) => {
|
||||
this._resetProgress()
|
||||
this.duration = convertTimeMMSS(this.player.duration)
|
||||
})
|
||||
|
||||
this.player.addEventListener('timeupdate', this._onTimeUpdate)
|
||||
},
|
||||
computed: {
|
||||
playBtnIcon () {
|
||||
return this.isPlaying ? 'pause' : 'play'
|
||||
}
|
||||
},
|
||||
methods: {
|
||||
playback () {
|
||||
if (!this.record.url) {
|
||||
return
|
||||
}
|
||||
|
||||
if (this.isPlaying) {
|
||||
this.player.pause()
|
||||
} else {
|
||||
setTimeout(() => { this.player.play() }, 0)
|
||||
}
|
||||
|
||||
this.isPlaying = !this.isPlaying
|
||||
},
|
||||
upload () {
|
||||
if (!this.record.url) {
|
||||
return
|
||||
}
|
||||
|
||||
if (this.startUpload) {
|
||||
this.startUpload()
|
||||
}
|
||||
|
||||
this.$emit('on-start-upload')
|
||||
|
||||
let data = new FormData()
|
||||
data.append('audio', this.record.blob, 'my-record')
|
||||
|
||||
this.$http.post(this.uploadUrl, data, {
|
||||
headers: {'Content-Type': `multipart/form-data; boundary=${data._boundary}`}
|
||||
}).then(resp => {
|
||||
this.$emit('on-end-upload', 'success')
|
||||
if (this.successfulUpload) {
|
||||
this.successfulUpload(resp)
|
||||
}
|
||||
}).catch(error => {
|
||||
this.$emit('on-end-upload', 'fail')
|
||||
if (this.failedUpload) {
|
||||
this.failedUpload(error)
|
||||
}
|
||||
})
|
||||
},
|
||||
download () {
|
||||
if (!this.record.url) {
|
||||
return
|
||||
}
|
||||
|
||||
let link = document.createElement('a')
|
||||
link.href = this.record.url
|
||||
link.download = 'record.wav'
|
||||
link.click()
|
||||
},
|
||||
_resetProgress () {
|
||||
this.isPlaying = false
|
||||
this.progress = 0
|
||||
},
|
||||
_onTimeUpdate () {
|
||||
this.playedTime = convertTimeMMSS(this.player.currentTime)
|
||||
this.progress = (this.player.currentTime / this.player.duration) * 100
|
||||
},
|
||||
_onUpdateProgress (pos) {
|
||||
if (pos) {
|
||||
this.player.currentTime = pos * this.player.duration
|
||||
}
|
||||
},
|
||||
_onUpdateVolume (val) {
|
||||
if (val) {
|
||||
this.player.volume = val
|
||||
this.volume = val
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
</script>
|
||||
13
src/index.js
Normal file
13
src/index.js
Normal file
@@ -0,0 +1,13 @@
|
||||
import AudioRecorder from './audio-recorder.vue'
|
||||
|
||||
export default {
|
||||
install: function (Vue) {
|
||||
if (this.installed) {
|
||||
return
|
||||
}
|
||||
|
||||
this.installed = true
|
||||
|
||||
Vue.component('audio-recorder', AudioRecorder)
|
||||
}
|
||||
}
|
||||
110
src/lib/recorder.js
Normal file
110
src/lib/recorder.js
Normal file
@@ -0,0 +1,110 @@
|
||||
import WavEncoder from './wav-encoder'
|
||||
import { convertTimeMMSS } from './utils'
|
||||
|
||||
export default class {
|
||||
constructor (options = {}) {
|
||||
this.afterStop = options.afterStop
|
||||
this.micFailed = options.micFailed
|
||||
|
||||
this.bufferSize = 4096
|
||||
this.records = []
|
||||
this.samples = []
|
||||
|
||||
this.isPause = false
|
||||
this.isRecording = false
|
||||
|
||||
this.duration = 0
|
||||
this.volume = 0
|
||||
|
||||
this._duration = 0
|
||||
}
|
||||
|
||||
start () {
|
||||
navigator.mediaDevices.getUserMedia({audio: true})
|
||||
.then(this._micCaptured.bind(this))
|
||||
.catch(this._micError.bind(this))
|
||||
this.isPause = false
|
||||
this.isRecording = true
|
||||
}
|
||||
|
||||
stop () {
|
||||
this.stream.getTracks().forEach((track) => track.stop())
|
||||
this.input.disconnect()
|
||||
this.processor.disconnect()
|
||||
this.context.close()
|
||||
|
||||
let encoder = new WavEncoder({
|
||||
bufferSize: this.bufferSize,
|
||||
sampleRate: this.context.sampleRate,
|
||||
samples: this.samples
|
||||
})
|
||||
|
||||
let audioBlob = encoder.getData()
|
||||
let audioUrl = URL.createObjectURL(audioBlob)
|
||||
|
||||
this.samples = []
|
||||
|
||||
this.records.push({
|
||||
blob: audioBlob,
|
||||
url: audioUrl,
|
||||
duration: convertTimeMMSS(this.duration)
|
||||
})
|
||||
|
||||
this.isPause = false
|
||||
this.isRecording = false
|
||||
this._duration = 0
|
||||
this.duration = 0
|
||||
|
||||
if (this.afterStop) {
|
||||
this.afterStop()
|
||||
}
|
||||
}
|
||||
|
||||
pause () {
|
||||
this.stream.getTracks().forEach((track) => track.stop())
|
||||
this.input.disconnect()
|
||||
this.processor.disconnect()
|
||||
this.context.close()
|
||||
|
||||
this._duration = this.duration
|
||||
this.isPause = true
|
||||
}
|
||||
|
||||
recordList () {
|
||||
return this.records
|
||||
}
|
||||
|
||||
lastRecord () {
|
||||
return this.records.slice(-1)
|
||||
}
|
||||
|
||||
_micCaptured (stream) {
|
||||
this.context = new AudioContext()
|
||||
this.input = this.context.createMediaStreamSource(stream)
|
||||
this.processor = this.context.createScriptProcessor(this.bufferSize, 1, 1)
|
||||
this.duration = this._duration
|
||||
this.stream = stream
|
||||
|
||||
this.processor.onaudioprocess = (ev) => {
|
||||
let sample = ev.inputBuffer.getChannelData(0)
|
||||
let sum = 0.0
|
||||
|
||||
for (let i = 0; i < sample.length; ++i) {
|
||||
sum += sample[i] * sample[i]
|
||||
}
|
||||
|
||||
this.duration = parseFloat(this._duration) + parseFloat(this.context.currentTime.toFixed(2))
|
||||
this.volume = Math.sqrt(sum / sample.length).toFixed(2)
|
||||
this.samples.push(new Float32Array(sample))
|
||||
}
|
||||
|
||||
this.input.connect(this.processor)
|
||||
this.processor.connect(this.context.destination)
|
||||
}
|
||||
|
||||
_micError (error) {
|
||||
if (this.micFailed) {
|
||||
this.micFailed(error)
|
||||
}
|
||||
}
|
||||
}
|
||||
22
src/lib/utils.js
Normal file
22
src/lib/utils.js
Normal file
@@ -0,0 +1,22 @@
|
||||
export function calculateLineHeadPosition (ev, element) {
|
||||
let progressWidth = element.getBoundingClientRect().width
|
||||
let leftPosition = ev.target.getBoundingClientRect().left
|
||||
let pos = (ev.clientX - leftPosition) / progressWidth
|
||||
|
||||
try {
|
||||
if (!ev.target.className.match(/^ar\-line\-control/)) {
|
||||
return
|
||||
}
|
||||
} catch (err) {
|
||||
return
|
||||
}
|
||||
|
||||
pos = pos < 0 ? 0 : pos
|
||||
pos = pos > 1 ? 1 : pos
|
||||
|
||||
return pos
|
||||
}
|
||||
|
||||
export function convertTimeMMSS (seconds) {
|
||||
return new Date(seconds * 1000).toISOString().substr(14, 5)
|
||||
}
|
||||
59
src/lib/wav-encoder.js
Normal file
59
src/lib/wav-encoder.js
Normal file
@@ -0,0 +1,59 @@
|
||||
export default class {
|
||||
constructor (options) {
|
||||
this.bufferSize = options.bufferSize || 4096
|
||||
this.sampleRate = options.sampleRate
|
||||
this.samples = options.samples
|
||||
}
|
||||
|
||||
getData () {
|
||||
this._joinSamples()
|
||||
|
||||
let buffer = new ArrayBuffer(44 + this.samples.length * 2)
|
||||
let view = new DataView(buffer)
|
||||
|
||||
this._writeString(view, 0, 'RIFF') // RIFF identifier
|
||||
view.setUint32(4, 36 + this.samples.length * 2, true) // RIFF chunk length
|
||||
this._writeString(view, 8, 'WAVE') // RIFF type
|
||||
this._writeString(view, 12, 'fmt ') // format chunk identifier
|
||||
view.setUint32(16, 16, true) // format chunk length
|
||||
view.setUint16(20, 1, true) // sample format (raw)
|
||||
view.setUint16(22, 1, true) // channel count
|
||||
view.setUint32(24, this.sampleRate, true) // sample rate
|
||||
view.setUint32(28, this.sampleRate * 4, true) // byte rate (sample rate * block align)
|
||||
view.setUint16(32, 4, true) // block align (channel count * bytes per sample)
|
||||
view.setUint16(34, 16, true) // bits per sample
|
||||
this._writeString(view, 36, 'data') // data chunk identifier
|
||||
view.setUint32(40, this.samples.length * 2, true) // data chunk length
|
||||
|
||||
this._floatTo16BitPCM(view, 44, this.samples)
|
||||
|
||||
return new Blob([view], {type: 'audio/wav'})
|
||||
}
|
||||
|
||||
_floatTo16BitPCM (output, offset, input) {
|
||||
for (let i = 0; i < input.length; i++, offset += 2) {
|
||||
let s = Math.max(-1, Math.min(1, input[i]))
|
||||
output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true)
|
||||
}
|
||||
}
|
||||
|
||||
_joinSamples () {
|
||||
let recordLength = this.samples.length * this.bufferSize
|
||||
let joinedSamples = new Float64Array(recordLength)
|
||||
let offset = 0
|
||||
|
||||
for (let i = 0; i < this.samples.length; i++) {
|
||||
let sample = this.samples[i]
|
||||
joinedSamples.set(sample, offset)
|
||||
offset += sample.length
|
||||
}
|
||||
|
||||
this.samples = joinedSamples
|
||||
}
|
||||
|
||||
_writeString (view, offset, string) {
|
||||
for (let i = 0; i < string.length; i++) {
|
||||
view.setUint8(offset + i, string.charCodeAt(i))
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user