310 lines
8.6 KiB
JavaScript
310 lines
8.6 KiB
JavaScript
importScripts('rlottie-wasm.js');
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//importScripts('pako-inflate.min.js');
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function RLottieItem(reqId, jsString, width, height, fps) {
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this.stringOnWasmHeap = null;
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this.handle = null;
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this.frameCount = 0;
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this.curFrame = 0;
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this.interval = 0;
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this.reqId = reqId;
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this.width = width;
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this.height = height;
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this.fps = Math.max(1, Math.min(60, fps || 60));
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this.dead = false;
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this.paused = true;
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this.speed = 1;
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this.direction = 1;
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this.init(jsString, width, height);
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this.play();
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}
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RLottieItem.prototype.mainLoop = function() {
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if(this.dead) return;
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this.render(this.curFrame++);
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if(this.curFrame >= this.frameCount) {
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this.curFrame = 0;
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}
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};
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RLottieItem.prototype.mainLoopBackwards = function() {
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if(this.dead) return;
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this.render(this.curFrame--);
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if(this.curFrame < 0) {
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this.curFrame = this.frameCount - 1;
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}
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};
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RLottieItem.prototype.init = function(jsString) {
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try {
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this.handle = RLottieWorker.Api.init();
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/* var lengthBytes = lengthBytesUTF8(jsString) + 1;
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this.stringOnWasmHeap = _malloc(lengthBytes);
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stringToUTF8(jsString, this.stringOnWasmHeap, lengthBytes); */
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this.stringOnWasmHeap = allocate(intArrayFromString(jsString), 'i8', 0);
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//Module._free(this.stringOnWasmHeap);
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/* var data = new Uint8ClampedArray(Module.HEAP8.buffer, this.handle - 4, 28);
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console.warn('lottie handle:', this.handle, 'string:', this.stringOnWasmHeap, data);
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console.warn('lottie will free:', this.stringOnWasmHeap);
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Module._free(this.stringOnWasmHeap); */
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/* var buffer = RLottieWorker.Api.buffer(this.handle);
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console.warn('buffer after clean:', buffer); */
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this.frameCount = RLottieWorker.Api.loadFromData(this.handle, this.stringOnWasmHeap);
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console.warn('lottie frameCount:', this.frameCount, this.handle);
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RLottieWorker.Api.resize(this.handle, this.width, this.height);
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} catch(e) {
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console.error('init RLottieItem error:', e);
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}
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};
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RLottieItem.prototype.render = function(frameNo) {
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if(this.dead) return;
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//return;
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try {
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RLottieWorker.Api.render(this.handle, frameNo);
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//this.dead = true;
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//this.pause();
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//return;
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var bufferPointer = RLottieWorker.Api.buffer(this.handle);
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var data = new Uint8ClampedArray(Module.HEAP8.buffer, bufferPointer, this.width * this.height * 4);
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var buffer = new Uint8ClampedArray(data);
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reply('frame', this.reqId, frameNo, buffer, this.width, this.height);
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} catch(e) {
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console.error('Render error:', e);
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this.dead = true;
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this.pause();
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}
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};
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RLottieItem.prototype.setMainLoop = function() {
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clearInterval(this.interval);
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var frInterval = 1000 / this.fps * this.speed;
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if(this.direction == 1) {
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this.interval = setInterval(this.mainLoop.bind(this), frInterval);
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this.mainLoop();
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} else {
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this.interval = setInterval(this.mainLoopBackwards.bind(this), frInterval);
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this.mainLoopBackwards();
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}
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};
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RLottieItem.prototype.play = function() {
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if(this.dead || !this.paused) return;
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this.setMainLoop();
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this.paused = false;
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};
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RLottieItem.prototype.pause = function() {
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if(this.dead || this.paused) return;
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clearInterval(this.interval);
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this.paused = true;
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};
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RLottieItem.prototype.stop = function() {
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if(this.dead) return;
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this.pause();
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this.curFrame = this.direction == 1 ? 0 : this.frameCount;
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};
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RLottieItem.prototype.restart = function() {
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if(this.dead) return;
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this.stop();
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this.play();
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};
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RLottieItem.prototype.destroy = function() {
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this.dead = true;
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this.pause();
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//Module._free(this.handle);
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console.warn('lottie will destroy:', this.handle);
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RLottieWorker.Api.destroy(this.handle);
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/* var data = new Uint8ClampedArray(Module.HEAP8.buffer, this.handle - 4, 20);
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console.warn('lottie after destroy:', this.reqId, 'string:', data); */
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};
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var RLottieWorker = (function() {
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var worker = {};
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worker.Api = {};
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//worker.lottieHandle = null;
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function initApi() {
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/* worker.Api = {
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init: Module.cwrap('lottie_init', '', []),
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destroy: Module.cwrap('lottie_destroy', '', ['number']),
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resize: Module.cwrap('lottie_resize', '', ['number', 'number', 'number']),
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buffer: Module.cwrap('lottie_buffer', 'number', ['number']),
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frameCount: Module.cwrap('lottie_frame_count', 'number', ['number']),
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render: Module.cwrap('lottie_render', '', ['number', 'number']),
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loadFromData: Module.cwrap('lottie_load_from_data', 'number', ['number', 'number']),
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}; */
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worker.Api = {
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init: Module.cwrap('lottie_init', '', []),
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destroy: Module.cwrap('lottie_destroy', '', ['number']),
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resize: Module.cwrap('lottie_resize', '', ['number', 'number', 'number']),
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buffer: Module.cwrap('lottie_buffer', 'number', ['number']),
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render: Module.cwrap('lottie_render', '', ['number', 'number']),
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loadFromData: Module.cwrap('lottie_load_from_data', 'number', ['number', 'number']),
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};
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}
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worker.init = function() {
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initApi();
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reply('ready');
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};
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/* worker.loadSticker = function(url, callback) {
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getUrlContent(url, function(err, data) {
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if (err) {
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return console.warn('Can\'t fetch file ' + url, err);
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}
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try {
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var json = pako.inflate(data, {to: 'string'});
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var json_parsed = JSON.parse(json);
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if (!json_parsed.tgs) {
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throw new Error('Invalid file');
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}
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} catch (e) {
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return console.warn('Invalid file ' + url);
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}
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callback(json, json_parsed.fr);
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});
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} */
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return worker;
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}());
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Module.onRuntimeInitialized = function() {
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RLottieWorker.init();
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};
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var items = {};
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var queryableFunctions = {
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/* loadSticker: function(reqId, url, width, height) {
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RLottieWorker.loadSticker(url, function(json, fr) {
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var frames = RLottieWorker.renderFrames(reqId, json, width, height, fr);
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});
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}, */
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loadFromData: function(reqId, jsString, width, height) {
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try {
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var json_parsed = jsString;//JSON.parse(jsString);
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if(!json_parsed.tgs) {
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throw new Error('Invalid file');
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}
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items[reqId] = new RLottieItem(reqId, JSON.stringify(jsString), width, height, json_parsed.fr);
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} catch(e) {}
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},
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destroy: function(reqId) {
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items[reqId].destroy();
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delete items[reqId];
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},
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play: function(reqId) {
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items[reqId].play();
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},
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pause: function(reqId) {
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items[reqId].pause();
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},
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stop: function(reqId) {
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items[reqId].stop();
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},
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restart: function(reqId) {
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items[reqId].restart();
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},
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setSpeed: function(reqId, speed) {
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items[reqId].speed = speed;
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items[reqId].setMainLoop();
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},
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setDirection: function(reqId, direction) {
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items[reqId].direction = direction;
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items[reqId].setMainLoop();
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}
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/* renderFrames: function(reqId, jsString, width, height) {
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try {
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var json_parsed = jsString;//JSON.parse(jsString);
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if(!json_parsed.tgs) {
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throw new Error('Invalid file');
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}
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RLottieWorker.renderFrames(reqId, JSON.stringify(jsString), width, height, json_parsed.fr);
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// reply('result', reqId, width, height, frames);
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} catch(e) {}
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} */
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};
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function defaultReply(message) {
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// your default PUBLIC function executed only when main page calls the queryableWorker.postMessage() method directly
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// do something
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}
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function reply() {
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if(arguments.length < 1) {
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throw new TypeError('reply - not enough arguments');
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}
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var transfer = [], args = Array.prototype.slice.call(arguments, 1);
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for(var i = 0; i < args.length; i++) {
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if(args[i] instanceof ArrayBuffer) {
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transfer.push(args[i]);
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}
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if(args[i].buffer && args[i].buffer instanceof ArrayBuffer) {
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transfer.push(args[i].buffer);
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}
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}
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postMessage({ 'queryMethodListener': arguments[0], 'queryMethodArguments': args }, transfer);
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}
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onmessage = function(oEvent) {
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if(oEvent.data instanceof Object && oEvent.data.hasOwnProperty('queryMethod') && oEvent.data.hasOwnProperty('queryMethodArguments')) {
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queryableFunctions[oEvent.data.queryMethod].apply(self, oEvent.data.queryMethodArguments);
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} else {
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defaultReply(oEvent.data);
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}
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};
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/* function getUrlContent(path, callback) {
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try {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', path, true);
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if ('responseType' in xhr) {
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xhr.responseType = 'arraybuffer';
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}
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if (xhr.overrideMimeType) {
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xhr.overrideMimeType('text/plain; charset=x-user-defined');
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}
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xhr.onreadystatechange = function (event) {
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if (xhr.readyState === 4) {
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if (xhr.status === 200 || xhr.status === 0) {
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callback(null, xhr.response || xhr.responseText);
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} else {
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callback(new Error('Ajax error: ' + this.status + ' ' + this.statusText));
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}
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}
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};
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xhr.send();
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} catch (e) {
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callback(new Error(e));
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}
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}; */ |