13
This commit is contained in:
cansnow
+235
-1
@@ -241,6 +241,7 @@ export const formatChooseData = (data, key = "nickname") => {
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};
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export const getPurePath = (path) => {
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if(!path)return "";
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const prefix = "file://";
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const relativeRrefix = "_doc/";
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if (path.includes(prefix)) {
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@@ -302,4 +303,237 @@ export const checkLoginError = (error) => {
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default:
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return "操作失败";
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}
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};
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};
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// 删除本地文件，适配 plus 环境
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export const deleteLocalFile = (path) => {
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return new Promise((resolve) => {
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if (!path) return resolve();
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if (typeof plus === 'undefined') return resolve();
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// 尝试直接用 resolveLocalFileSystemURL，如果失败再尝试加 file:// 前缀
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const tryRemove = (p) => {
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plus.io.resolveLocalFileSystemURL(p, function(entry) {
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entry.remove(function() {
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resolve();
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}, function(err) {
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console.log('deleteLocalFile remove error:', err);
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resolve();
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});
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}, function(err) {
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resolve(err);
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});
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};
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tryRemove(path);
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});
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};
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export const getVideoCover = (videoPath, frameIndex, callback) => {
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// 兼容性：如果传入 callback，则函数立即返回空串，并在回调中返回路径；
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// 如果不传 callback，则返回 Promise<string>（兼容旧用法）。
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// 简单字符串哈希，用于生成固定缩略图文件名
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const _hash = (s) => {
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let h = 2166136261;
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for (let i = 0; i < s.length; i++) {
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h ^= s.charCodeAt(i);
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h = Math.imul(h, 16777619);
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}
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return (h >>> 0).toString(16);
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};
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const run = async () => {
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if (!videoPath) return "";
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// 生成固定的缩略图路径（基于 videoPath 哈希）
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let coverRel = null;
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try {
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const key = _hash(String(videoPath));
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coverRel = `_doc/video_cover_${key}.jpg`;
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const coverAbs = typeof plus !== 'undefined' && plus.io ? plus.io.convertLocalFileSystemURL(coverRel) : null;
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// 如果已存在，直接返回
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if (typeof plus !== 'undefined' && plus.io) {
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try {
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const exists = await new Promise((res) => {
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plus.io.resolveLocalFileSystemURL(coverRel, function(entry) { res(true); }, function() { res(false); });
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});
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if (exists) return coverAbs;
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} catch (e) {
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// ignore and continue
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}
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}
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} catch (e) {
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// ignore and continue
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coverRel = null;
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}
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// 1. Native plus 方式尝试
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if (typeof plus !== "undefined" && plus.io) {
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try {
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// 规范路径（若有可用转换函数）
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if (typeof getUniversalVideoPath === 'function') {
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try { videoPath = await getUniversalVideoPath(videoPath); } catch (e) {}
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}
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// 尝试 Android 原生 MediaMetadataRetriever 提取帧
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if (plus.android) {
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try {
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var MediaMetadataRetriever = plus.android.importClass('android.media.MediaMetadataRetriever');
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var retriever = new MediaMetadataRetriever();
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var setDataSourcePath = videoPath;
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if (typeof setDataSourcePath === 'string' && setDataSourcePath.indexOf('file://') === 0) {
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setDataSourcePath = setDataSourcePath.replace('file://', '');
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}
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var _setOk = false;
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try { retriever.setDataSource(setDataSourcePath); _setOk = true; } catch (sdErr) {
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try {
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var UriClass = plus.android.importClass('android.net.Uri');
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var uriObj = UriClass.parse(videoPath);
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var activity = plus.android.runtimeMainActivity();
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retriever.setDataSource(activity, uriObj);
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_setOk = true;
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} catch (sd2Err) {}
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}
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var timeUs = (typeof frameIndex === 'number' && frameIndex >= 0) ? Math.floor(frameIndex * 1000000) : 0;
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var bitmap = null;
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try { bitmap = retriever.getFrameAtTime(timeUs); } catch (gfErr) {}
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if (!bitmap) {
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try { bitmap = retriever.getFrameAtTime(-1); } catch (e2) {}
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}
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if (!bitmap) {
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try { bitmap = retriever.getFrameAtTime(1000000); } catch (e3) {}
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}
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if (bitmap) {
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try {
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var CompressFormat = plus.android.importClass('android.graphics.Bitmap$CompressFormat');
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var ByteArrayOutputStream = plus.android.importClass('java.io.ByteArrayOutputStream');
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var baos = new ByteArrayOutputStream();
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plus.android.invoke(bitmap, 'compress', CompressFormat.JPEG, 80, baos);
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var bytes = plus.android.invoke(baos, 'toByteArray');
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// 写入到固定路径（如果 coverRel 可用）
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var tempRel = coverRel || ('_doc/video_cover_' + Date.now() + '.jpg');
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var tempAbs = plus.io.convertLocalFileSystemURL(tempRel);
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var tempForJava = tempAbs;
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if (typeof tempForJava === 'string' && tempForJava.indexOf('file://') === 0) tempForJava = tempForJava.replace('file://', '');
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var FileOutputStream = plus.android.importClass('java.io.FileOutputStream');
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var fos = new FileOutputStream(tempForJava);
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plus.android.invoke(fos, 'write', bytes);
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plus.android.invoke(fos, 'close');
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try { retriever.release(); } catch (e) {}
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return tempAbs;
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} catch (writeErr) {
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try { retriever.release(); } catch (e) {}
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}
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} else {
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try { retriever.release(); } catch (e) {}
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}
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} catch (mmrErr) {}
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}
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// 兼容：尝试 plus.getVideoAttributes
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if (typeof plus.getVideoAttributes === "function") {
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try {
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const attr = await new Promise((res, rej) => {
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plus.getVideoAttributes(videoPath, function(info) { res(info && info.path ? info.path : info); }, function(err) { rej(err); });
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});
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if (attr) return attr;
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} catch (e) {}
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}
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} catch (e) {}
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}
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// 3. H5 capture via video+canvas（在 native 的 WebView 中也可以运行）
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if (typeof document !== "undefined") {
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try {
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const dataUrl = await new Promise((resolve) => {
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const video = document.createElement('video');
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video.crossOrigin = 'anonymous';
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video.src = videoPath;
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video.muted = true;
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video.playsInline = true;
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const onError = () => { cleanup(); resolve(''); };
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const onLoaded = () => {
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try {
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const targetTime = (typeof frameIndex === 'number' && frameIndex >= 0) ? Math.min(video.duration, frameIndex) : Math.min(1, Math.max(0, video.duration / 2));
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video.currentTime = targetTime;
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} catch (err) {}
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setTimeout(() => {
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try {
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const canvas = document.createElement('canvas');
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canvas.width = video.videoWidth || 320;
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canvas.height = video.videoHeight || 240;
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const ctx = canvas.getContext('2d');
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ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
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const data = canvas.toDataURL('image/jpeg', 0.8);
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cleanup();
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resolve(data || '');
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} catch (err) { cleanup(); resolve(''); }
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}, 400);
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};
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const cleanup = () => { video.removeEventListener('loadeddata', onLoaded); video.removeEventListener('error', onError); };
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video.addEventListener('loadeddata', onLoaded);
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video.addEventListener('error', onError);
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});
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if (!dataUrl) return '';
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if (typeof plus !== 'undefined' && plus.io) {
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try {
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const base64Data = dataUrl.split(',')[1];
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const bytes = atob(base64Data);
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const buf = new ArrayBuffer(bytes.length);
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const arr = new Uint8Array(buf);
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for (let i = 0; i < bytes.length; i++) arr[i] = bytes.charCodeAt(i);
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const tempRel = coverRel || ('_doc/video_cover_' + Date.now() + '.jpg');
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const tempAbs = plus.io.convertLocalFileSystemURL(tempRel);
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await new Promise((res, rej) => {
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plus.io.resolveLocalFileSystemURL(tempRel, function(fentry) {
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fentry.createWriter(function(writer) {
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writer.onwrite = function() { res(tempAbs); };
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writer.onerror = function(e) { rej(e); };
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writer.write(arr.buffer);
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}, function(e) { rej(e); });
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}, function() {
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plus.io.requestFileSystem(plus.io.PRIVATE_DOC, function(fs) {
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fs.root.getFile(tempRel, {create: true}, function(fentry) {
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fentry.createWriter(function(writer) { writer.onwrite = function() { res(tempAbs); }; writer.onerror = function(e) { rej(e); }; writer.write(arr.buffer); }, rej);
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}, rej);
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}, rej);
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});
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});
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return tempAbs;
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} catch (e) { return dataUrl; }
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}
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return dataUrl;
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} catch (e) {}
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}
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return '';
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};
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if (typeof callback === 'function') {
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run().then((p) => { try { callback(p); } catch (e) {} }).catch(() => { try { callback(''); } catch (e) {} });
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return "";
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}
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return run();
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};
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export const getVideoInfo = async (src)=>{
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return await new Promise((resolve,reject)=>{
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uni.getVideoInfo({
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src:src,
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success(res){
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resolve(res)
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},fail(error){
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reject(error)
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}
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})
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});
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}
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