feat(h5): uni.getVideoInfo

src/platforms/h5/helpers/file.js

@@ -9,9 +9,10 @@ const files = {}
 /**
  * 从url读取File
  * @param {string} url
+ * @param {boolean} local
  * @param {Promise}
  */
-export function urlToFile (url) {
+export function urlToFile (url, local) {
   var file = files[url]
   if (file) {
     return Promise.resolve(file)
@@ -19,6 +20,9 @@ export function urlToFile (url) {
   if (/^data:[a-z-]+\/[a-z-]+;base64,/.test(url)) {
     return Promise.resolve(base64ToFile(url))
   }
+  if (local) {
+    return Promise.reject(new Error('not find'))
+  }
   return new Promise((resolve, reject) => {
     var xhr = new XMLHttpRequest()
     xhr.open('GET', url, true)

src/platforms/h5/service/api/media/get-video-info.js

+import {
+  urlToFile
+} from 'uni-platform/helpers/file'
+
+export function getVideoInfo ({
+  src
+}, callbackId) {
+  const {
+    invokeCallbackHandler: invoke
+  } = UniServiceJSBridge
+  urlToFile(src, true).then(file => {
+    return file
+  }).catch(() => {
+    return {}
+  }).then(file => {
+    const result = file.size ? {
+      size: file.size,
+      errMsg: 'getVideoInfo:ok'
+    } : {
+      errMsg: 'getVideoInfo:fail'
+    }
+    const video = document.createElement('video')
+    if (video.onloadedmetadata !== undefined) {
+      // 部分浏览器（如微信内置浏览器）未播放无法触发loadedmetadata事件
+      const handle = setTimeout(() => {
+        video.onloadedmetadata = null
+        video.onerror = null
+        invoke(callbackId, result)
+      }, src.startsWith('data:') || src.startsWith('blob:') ? 300 : 3000)
+      // 尝试获取视频的宽高信息
+      video.onloadedmetadata = function () {
+        clearTimeout(handle)
+        video.onerror = null
+        invoke(callbackId, Object.assign(result, {
+          size: file.size,
+          duration: video.duration || 0,
+          width: video.videoWidth || 0,
+          height: video.videoHeight || 0,
+          errMsg: 'getVideoInfo:ok'
+        }))
+      }
+      video.onerror = function () {
+        clearTimeout(handle)
+        video.onloadedmetadata = null
+        invoke(callbackId, result)
+      }
+      video.src = src
+    } else {
+      invoke(callbackId, result)
+    }
+  })
+}