webcam getCapabilities not supported on firefox
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1 changed files with 185 additions and 180 deletions
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@ -1,71 +1,72 @@
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<template>
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<div class="d-inline-block">
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<label @click="open">
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<slot></slot>
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</label>
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<div class="modal" :class="{'d-block': show_modal}" tabindex="-1">
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<div class="modal-dialog modal-fullscreen">
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<div class="modal-content p-2">
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<button type="button" class="btn-close position-absolute fixed-top m-2" style="right: 1rem; left: auto;"
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@click="close"></button>
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<div v-if="error" class="alert alert-danger" role="alert">
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{{ lastError }}
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</div>
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<div class="row" v-if="capturing && !streaming">
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<div class="spinner-grow text-danger mx-auto" role="status">
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<span class="sr-only">Loading...</span>
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<div class="d-inline-block">
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<label @click="open">
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<slot></slot>
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</label>
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<div class="modal" :class="{'d-block': show_modal}" tabindex="-1">
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<div class="modal-dialog modal-fullscreen">
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<div class="modal-content p-2">
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<button type="button" class="btn-close position-absolute fixed-top m-2"
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style="right: 1rem; left: auto;"
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@click="close"></button>
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<div v-if="error" class="alert alert-danger" role="alert">
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{{ lastError }}
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</div>
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<div class="row" v-if="capturing && !streaming">
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<div class="spinner-grow text-danger mx-auto" role="status">
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<span class="sr-only">Loading...</span>
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</div>
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</div>
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<img
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v-if="!capturing && dataImage"
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class="img-fluid rounded mx-auto d-block w-75"
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:src="dataImage"
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alt="Image not available."
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/>
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<video
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ref="video"
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class="img-fluid rounded d-block img-preview w-75 mx-auto"
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:class="{'d-none': !capturing}"
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>
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Video stream not available.
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</video>
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<canvas ref="canvas" class="img-fluid d-none img-preview"/>
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<div class="position-absolute fixed-bottom text-center">
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<div class="btn-group shadow">
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<button
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class="btn btn-success"
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:class="{'disabled': dataImage}"
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@click="(!dataImage) && captureVideoImage()">
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<b-icon-camera></b-icon-camera> Capture
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</button>
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<button
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class="btn btn-danger"
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:class="{'disabled': !dataImage}"
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@click="(dataImage) && retake()"
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>
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<b-icon-trash></b-icon-trash> Retake
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</button>
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<button
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class="btn btn-primary"
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:class="{'disabled': !dataImage}"
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@click="(dataImage) && save()"
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>
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<b-icon-save></b-icon-save> Save
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</button>
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</div>
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<select v-model="selectedCamera" v-on:change="onUserSelect"
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class="form-select position-relative w-50 mx-auto mb-5 mt-2 shadow"
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aria-label="Select Camera Source">
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<option disabled value="">Select Camera Source</option>
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<option v-for="camera in availableCameras" :key="camera.deviceId" :value="camera">
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{{ camera.label }}
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</option>
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</select>
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</div>
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</div>
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</div>
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</div>
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<img
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v-if="!capturing && dataImage"
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class="img-fluid rounded mx-auto d-block w-75"
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:src="dataImage"
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alt="Image not available."
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/>
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<video
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ref="video"
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class="img-fluid rounded d-block img-preview w-75 mx-auto"
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:class="{'d-none': !capturing}"
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>
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Video stream not available.
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</video>
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<canvas ref="canvas" class="img-fluid d-none img-preview"/>
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<div class="position-absolute fixed-bottom text-center">
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<div class="btn-group shadow">
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<button
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class="btn btn-success"
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:class="{'disabled': dataImage}"
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@click="(!dataImage) && captureVideoImage()">
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<b-icon-camera></b-icon-camera> Capture
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</button>
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<button
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class="btn btn-danger"
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:class="{'disabled': !dataImage}"
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@click="(dataImage) && retake()"
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>
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<b-icon-trash></b-icon-trash> Retake
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</button>
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<button
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class="btn btn-primary"
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:class="{'disabled': !dataImage}"
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@click="(dataImage) && save()"
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>
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<b-icon-save></b-icon-save> Save
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</button>
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</div>
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<select v-model="selectedCamera" v-on:change="onUserSelect"
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class="form-select position-relative w-50 mx-auto mb-5 mt-2 shadow"
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aria-label="Select Camera Source">
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<option disabled value="">Select Camera Source</option>
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<option v-for="camera in availableCameras" :key="camera.deviceId" :value="camera">
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{{ camera.label }}
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</option>
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</select>
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</div>
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</div>
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</div>
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</div>
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</div>
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</template>
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<style scoped>
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@ -74,123 +75,127 @@
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<script>
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export default {
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name: "WebcamFileSource",
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data: () => ({
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lastError: undefined,
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error: false,
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show_modal: false,
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availableCameras: [],
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selectedCamera: undefined,
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capturing: false,
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streaming: false,
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stream: undefined,
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dataImage: undefined
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}),
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methods: {
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async attemptGetUserMedia(constraints) {
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this.stream = await navigator.mediaDevices.getUserMedia({
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audio: false,
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video: constraints
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}).catch((error) => {
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console.error(error);
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if (error.name === "NotAllowedError") this.lastError = "Camera Permission Not Granted";
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if (error.name === "NotReadableError") this.lastError = "Camera Hardware Error";
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this.lastError = "Unknown Error"
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});
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if (this.stream) this.allowed = true;
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name: "WebcamFileSource",
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data: () => ({
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lastError: undefined,
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error: false,
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show_modal: false,
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availableCameras: [],
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selectedCamera: undefined,
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capturing: false,
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streaming: false,
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stream: undefined,
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dataImage: undefined
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}),
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methods: {
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async attemptGetUserMedia(constraints) {
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this.stream = await navigator.mediaDevices.getUserMedia({
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audio: false,
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video: constraints
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}).catch((error) => {
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console.error(error);
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if (error.name === "NotAllowedError") this.lastError = "Camera Permission Not Granted";
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if (error.name === "NotReadableError") this.lastError = "Camera Hardware Error";
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this.lastError = "Unknown Error"
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});
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if (this.stream) this.allowed = true;
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},
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async assignStream() {
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console.log(this.stream.getTracks()[0]);
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const track = this.stream.getTracks()[0];
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if (track.getCapabilities) {
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const capabilities = this.stream.getTracks()[0].getCapabilities();
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await this.attemptGetUserMedia({
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deviceId: capabilities.deviceId,
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width: {ideal: capabilities.width.max},
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height: {ideal: capabilities.height.max}
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});
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}
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this.capturing = true;
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this.streaming = false;
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const {video} = this.$refs;
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video.srcObject = this.stream;
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video.addEventListener('canplay', () => {
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this.streaming = true;
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localStorage.setItem("WebcamFileSource#previousDevice", this.selectedCamera.deviceId);
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}, false);
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await video.play();
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},
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closeStream() {
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if (this.capturing) {
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this.stream.getTracks().forEach(s => s.stop());
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this.streaming = false;
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this.stream = undefined;
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}
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},
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async enumerateCameras() {
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const devices = await navigator.mediaDevices.enumerateDevices();
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this.availableCameras = devices.filter(device => device.kind === "videoinput");
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},
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async open() {
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this.show_modal = true;
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const previousDevice = localStorage.getItem("WebcamFileSource#previousDevice");
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if (previousDevice) await this.attemptGetUserMedia({deviceId: previousDevice});
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if (!this.stream) await this.attemptGetUserMedia({facingMode: "environment"});
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if (!this.stream) await this.attemptGetUserMedia(true);
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if (!this.stream) this.error = true;
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await this.enumerateCameras();
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this.selectedCamera = this.availableCameras.find(({deviceId}) => deviceId === this.stream.getTracks()[0].getSettings().deviceId);
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await this.assignStream();
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},
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async onUserSelect() {
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this.closeStream();
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if (!this.dataImage) {
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await this.attemptGetUserMedia({deviceId: this.selectedCamera.deviceId})
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await this.assignStream();
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}
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},
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async close() {
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this.closeStream();
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this.capturing = false;
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this.show_modal = false;
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this.dataImage = undefined;
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},
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captureVideoImage() {
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const {video, canvas} = this.$refs;
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const context = canvas.getContext('2d');
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const {videoWidth, videoHeight} = video;
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canvas.width = videoWidth;
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canvas.height = videoHeight;
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context.drawImage(video, 0, 0, videoWidth, videoHeight);
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this.dataImage = canvas.toDataURL('image/jpeg', 0.5);
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this.closeStream();
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this.capturing = false;
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},
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retake() {
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this.dataImage = undefined;
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this.open();
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},
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save() {
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const mimeType = this.dataImage.split(';')[0].split(':')[1];
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const data = this.dataImage.split(',')[1];
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const raw_data = atob(data);
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const hash = nacl.crypto_hash(raw_data).reduce((a, b) => a + b.toString(16).padStart(2, "0"), "");
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const image = {
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name: hash.slice(0, 12) + ".jpg",
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size: raw_data.length,
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mime_type: mimeType,
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data: data,
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hash: hash,
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};
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this.$emit('input', [image]);
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this.close();
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}
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},
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async assignStream() {
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const capabilities = this.stream.getTracks()[0].getCapabilities();
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await this.attemptGetUserMedia({
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deviceId: capabilities.deviceId,
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width: {exact: capabilities.width.max},
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height: {exact: capabilities.height.max}
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})
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this.capturing = true;
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this.streaming = false;
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const {video} = this.$refs;
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video.srcObject = this.stream;
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video.addEventListener('canplay', () => {
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this.streaming = true;
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localStorage.setItem("WebcamFileSource#previousDevice", this.selectedCamera.deviceId);
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}, false);
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await video.play();
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},
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closeStream() {
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if (this.capturing) {
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this.stream.getTracks().forEach(s => s.stop());
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this.streaming = false;
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this.stream = undefined;
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}
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},
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async enumerateCameras() {
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const devices = await navigator.mediaDevices.enumerateDevices();
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this.availableCameras = devices.filter(device => device.kind === "videoinput");
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},
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async open() {
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this.show_modal = true;
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const previousDevice = localStorage.getItem("WebcamFileSource#previousDevice");
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if (previousDevice) await this.attemptGetUserMedia({deviceId: previousDevice});
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if (!this.stream) await this.attemptGetUserMedia({facingMode: "environment"});
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if (!this.stream) await this.attemptGetUserMedia(true);
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if (!this.stream) this.error = true;
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await this.enumerateCameras();
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this.selectedCamera = this.availableCameras.find(({deviceId}) => deviceId === this.stream.getTracks()[0].getSettings().deviceId);
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await this.assignStream();
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},
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async onUserSelect() {
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this.closeStream();
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if (!this.dataImage) {
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await this.attemptGetUserMedia({deviceId: this.selectedCamera.deviceId})
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await this.assignStream();
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}
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},
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async close() {
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this.closeStream();
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this.capturing = false;
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this.show_modal = false;
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this.dataImage = undefined;
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},
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captureVideoImage() {
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const {video, canvas} = this.$refs;
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const context = canvas.getContext('2d');
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const {videoWidth, videoHeight} = video;
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canvas.width = videoWidth;
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canvas.height = videoHeight;
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context.drawImage(video, 0, 0, videoWidth, videoHeight);
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this.dataImage = canvas.toDataURL('image/jpeg', 0.5);
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this.closeStream();
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this.capturing = false;
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},
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retake() {
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this.dataImage = undefined;
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this.open();
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},
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save() {
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const mimeType = this.dataImage.split(';')[0].split(':')[1];
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const data = this.dataImage.split(',')[1];
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const raw_data = atob(data);
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const hash = nacl.crypto_hash(raw_data).reduce((a, b) => a + b.toString(16).padStart(2, "0"), "");
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const image = {
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name: hash.slice(0, 12) + ".jpg",
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size: raw_data.length,
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mime_type: mimeType,
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data: data,
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hash: hash,
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};
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this.$emit('input', [image]);
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this.close();
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mounted() {
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navigator.mediaDevices.addEventListener("devicechange", (event) => {
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console.log("devicechange");
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this.enumerateCameras();
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if (this.availableCameras.findIndex(({deviceId}) => deviceId === this.selectedCamera.deviceId) === -1) {
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this.closeStream();
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this.open();
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}
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});
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}
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},
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mounted() {
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navigator.mediaDevices.addEventListener("devicechange", (event) => {
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console.log("devicechange");
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this.enumerateCameras();
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if (this.availableCameras.findIndex(({deviceId}) => deviceId === this.selectedCamera.deviceId) === -1) {
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this.closeStream();
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this.open();
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}
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});
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}
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}
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</script>
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