393 lines
9.4 KiB
TypeScript
393 lines
9.4 KiB
TypeScript
'use strict';
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import { default as animated } from 'animated-gif-detector';
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import { extname } from 'path';
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import { readFile } from 'fs-extra';
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import { delay } from 'delay';
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import { createHash } from 'crypto';
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import Jimp from 'jimp';
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import Frame from 'frame';
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/**
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* @module FilmOut
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**/
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class FilmOut {
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private id : string = 'filmout';
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private videoExtensions : string[] = ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4'];
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private stillExtensions : string[] = ['.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
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private gifExtension : string = '.gif';
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public state : any = {
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frame : 0,
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frames : 0,
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still : false,
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path : null,
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fileName : null,
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info : {},
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dir : true,
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enabled : false
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};
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private display : any;
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private ffmpeg : any;
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private ffprobe : any;
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private light : any;
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private ipc : any;
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private ui : any;
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private log : any;
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/**
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* @constructor
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* Builds FilmOut class with display, ffmpeg, ffprobe, ui and light as internal properties.
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*
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* @param {object} display Display object for showing frames
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* @param {object} ffmpeg FFMPEG wrapper
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* @param {object} ffprobe FFPROBE wrapper for file info
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* @param {object} ui Electron ui object
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* @param {object} light Light device object
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**/
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constructor (display : any, ffmpeg : any, ffprobe : any, ui : any, light : any) {
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this.display = display;
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this.ffmpeg = ffmpeg;
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this.ffprobe = ffprobe;
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this.ui = ui;
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this.light = light;
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this.init();
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}
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/**
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* Async function for requiring log, ipcMain and bind events.
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**/
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private async init () {
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const Log = require('log');
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this.log = await Log({ label : this.id });
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this.ipc = require('electron').ipcMain;
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this.listen();
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}
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/**
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*
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**/
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private listen () {
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this.ipc.on(this.id, this.onConnect.bind(this));
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this.ipc.on('focus', this.focus.bind(this));
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this.ipc.on('field', this.field.bind(this));
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this.ipc.on('meter', this.meter.bind(this));
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this.ipc.on('filmout_close', this.close.bind(this));
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this.ipc.on('preview', this.preview.bind(this));
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this.ipc.on('preview_frame', this.previewFrame.bind(this));
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this.ipc.on('display', this.onDisplay.bind(this));
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this.ipc.on('pre_export', this.onPreExport.bind(this));
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this.ffmpeg.onProgress = (obj : any) => {
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this.ui.send('pre_export_progress', { progress: obj });
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}
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}
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/**
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* Create a hash of a string.
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*
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* @param {string} data Data to produce hash of
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*/
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private hash (data : string) {
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return createHash('sha1').update(data).digest('hex');
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}
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/**
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* Sets filmout direction.
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*
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* @param {boolean} dir Direction of filmout
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**/
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public set (dir : boolean) {
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this.state.dir = dir;
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}
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/**
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* Moves filmout a frame at a time.
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**/
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public async move () {
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let start : number = +new Date();
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if (this.state.still) {
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return false;
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}
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if (this.state.dir) {
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this.state.frame++;
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} else {
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this.state.frame--;
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}
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if (this.state.frame < 1) {
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this.state.frame = 1;
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}
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return (+new Date()) - start;
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}
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/**
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* Begin the process of exporting single frames from the video for display.
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**/
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async start () {
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let path;
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try {
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path = await this.ffmpeg.frame(this.state, this.light.state);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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throw err;
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}
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await this.display.show(path);
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await delay(20);
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}
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/**
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* Ends the filmout process and closes the display.
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**/
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private async end () {
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await delay(20);
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this.display.hide();
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}
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/**
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* Use a video file as a film out source on "projector"
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*
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* @param {object} evt Original connect event
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* @param {object} arg Arguments from ipc message
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**/
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async onConnect (evt : any, arg : any) {
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let frames : number = 0;
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let isAnimated : boolean = false;
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let info : any;
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let ext : string;
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ext = extname(arg.fileName.toLowerCase());
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if (ext === this.gifExtension) {
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try {
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isAnimated = await this.isGifAnimated(arg.path);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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await this.ui.send(this.id, { valid : false });
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return false;
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}
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this.state.still = !isAnimated;
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} else if (this.stillExtensions.indexOf(ext) !== -1) {
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this.state.still = true;
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} else if (this.videoExtensions.indexOf(ext) !== -1) {
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this.state.still = false;
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} else {
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this.log.error(`File is not of a valid file type`, 'FILMOUT', true, true);
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return false;
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}
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try {
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await this.ffmpeg.clearAll();
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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throw err;
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}
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if (this.state.still) {
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try {
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info = await this.stillInfo(arg.path);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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this.state.enabled = false;
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await this.ui.send(this.id, { valid : false });
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return false;
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}
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frames = 1;
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} else {
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try {
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info = await this.ffprobe.info(arg.path);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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this.state.enabled = false;
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await this.ui.send(this.id, { valid : false });
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return false;
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}
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try {
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frames = await this.ffprobe.frames(arg.path);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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this.state.enabled = false;
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await this.ui.send(this.id, { valid : false });
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return false;
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}
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}
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this.state.frame = 0;
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this.state.path = arg.path;
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this.state.fileName = arg.fileName;
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this.state.frames = frames;
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this.state.info = info;
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this.state.hash = this.hash(arg.path);
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if (info.seconds) {
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this.state.seconds = info.seconds;
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} else if (info.fps && frames) {
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this.state.seconds = frames / info.fps;
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}
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this.log.info(`Opened ${this.state.fileName}`, 'FILMOUT', true, true);
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this.log.info(`Frames : ${frames}`, 'FILMOUT', true, true);
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this.state.enabled = true;
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return await this.ui.send(this.id, { valid : true, state : JSON.stringify(this.state) });
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}
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/**
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* Pre-export all frames from video for display.
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*
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* @param {object} evt IPC event
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* @param {object} arg IPC args
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*/
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async onPreExport (evt : Event, arg : any) {
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if (!this.state.path) {
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return await this.ui.send('pre_export', { complete : false, err : 'No file to pre export.' });
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}
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try {
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await this.ffmpeg.frames(this.state);
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} catch (err) {
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return await this.ui.send('pre_export', { complete : false, err });
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}
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return await this.ui.send('pre_export', { complete : true });
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}
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/**
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* Return true if gif is animated, false if it is a still
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*
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* @param {string} pathStr Path to gif to check
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*
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* @returns {boolean} Whether or not gif is animated
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**/
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async isGifAnimated (pathStr : string) {
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let gifBuffer : Buffer;
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try {
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gifBuffer = await readFile(pathStr);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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return false;
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}
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return animated(gifBuffer);
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}
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/**
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* Return information on a still image using the sharp module
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*
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* @param {string} pathStr Path to gif to check
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*
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* @returns {object} Info about still from sharp
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**/
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async stillInfo (pathStr : string) {
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let info : any;
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try {
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info = await Frame.info(pathStr);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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return info;
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}
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/**
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* Preview a frame from the selected video.
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*
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* @param {object} evt Original event
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* @param {object} arg Arguments from message
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**/
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async previewFrame (evt : any, arg : any) {
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const state : any = JSON.parse(JSON.stringify(this.state));
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let path : string;
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state.frame = arg.frame;
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try {
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path = await this.ffmpeg.frame(state, { color : [255, 255, 255] });
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);;
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throw err;
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}
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this.ui.send('preview_frame', { path, frame : arg.frame })
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}
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/**
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* Open a single frame in a display window to preview filmout.
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*
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* @param {object} evt Original event
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* @param {object} arg Arguments from message
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**/
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async preview (evt : any, arg : any) {
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const state : any = JSON.parse(JSON.stringify(this.state));
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let path : string;
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state.frame = arg.frame;
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this.log.info(`Previewing frame ${state.frame} of ${state.fileName}`);
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try {
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path = await this.ffmpeg.frame(state, { color : [255, 255, 255] });
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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throw err;
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}
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try {
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await this.display.open();
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await this.display.show(path);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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}
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/**
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*
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**/
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async focus (evt : any, arg : any) {
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this.log.info(`Showing focus screen`);
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try {
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await this.display.open();
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await this.display.focus();
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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}
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/**
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*
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**/
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async field (evt : any, arg : any) {
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const ratio : number = arg.ratio;
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this.log.info(`Showing field guide screen`);
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try {
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await this.display.open();
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await this.display.field(ratio);
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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}
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/**
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*
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**/
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async meter (evt : any, arg : any) {
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this.log.info(`Showing meter screen`);
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try {
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await this.display.open();
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await this.display.meter();
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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}
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/**
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*
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**/
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async close (evt : any, arg : any) {
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try {
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await this.display.hide();
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await this.display.close();
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} catch (err) {
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this.log.error(err, 'FILMOUT', true, true);
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}
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}
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/**
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*
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**/
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onDisplay (evt : any, arg : any) {
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this.display.change(arg.display);
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this.log.info(`Changing the display to ${arg.display}`);
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}
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}
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module.exports = (display : any, ffmpeg : any, ffprobe : any, ui : any, light : any) => {
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return new FilmOut(display, ffmpeg, ffprobe, ui, light);
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}
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