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Es6 refactor, more to come. Will be re-structuring v2f.js to handle multiple formats and better manage files in different locations.

This commit is contained in:
M McWilliams 2017-10-11 14:01:25 -07:00
parent 36c4875d1b
commit ff8d0a5f93
1 changed files with 91 additions and 75 deletions
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166
v2f.js
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@ -1,103 +1,119 @@
var exec = require('child_process').exec, /*jshint strict: true, esversion:6, node: true, asi: true*/
fs = require('fs'),
_tmp = './temp';
//var frame_height = 7.61; 'use strict'
//var frame_height = 7.49; const exec = require('child_process').exec
var frame_height = 7.62; const fs = require('fs')
var frame_padding = 0; const _tmp = './temp'
var frame_dimensions = function (dpi) { //var frame_height = 7.61
var h = Math.round(frame_height * (dpi / 25.4)), //var frame_height = 7.49
w = Math.round(10.5 * (dpi / 25.4)), let frame_height = 7.62
o = Math.round(16 * (dpi / 25.4)); let frame_padding = 0
return {h: h, w: w, o: o, dpi: dpi};
};
/* class Dimensions{
convert() - Turn video into sheet of images constructor (film, dpi) {
const IN = dpi / 25.4
this.h = Math.round(film.frame_height * IN)
this.w = Math.round(film.a * IN)
this.o = Math.round(film.b * IN)
this.dpi = dpi
this.film = film
}
}
@param: path - file path (absolute) /** *
@param: dpi - target printing dpi * Turn video into sheet of images
@param: length - strip length in frames
* @function
* @param {String} path file path (absolute)
* @param {Integer} dpi target printing dpi
* @param {Integer} length strip length in frames
*
*/ */
var convert = function (path, dpi) { function convert (path, dpi) {
'use strict'; const film = { frame_height: frame_height, a : 10.5, b : 16}
var dim = frame_dimensions(dpi), const dim = new Dimensions(film, dpi)
file = path.split('/').pop(), const file = path.split('/').pop()
loc = _tmp + '/', const loc = _tmp + '/'
execStr = 'avconv -i "' + path + '" -s ' + dim.w + 'x' + dim.h + ' -qscale 1 "' + loc + 'sequence_%04d.jpg"'; const execStr = `avconv -i "${path}" -s ${dim.w}x${dim.h} -qscale 1 "${loc}sequence_%04d.jpg"`
console.log('Converting ' + file + '...'); console.log(`Converting ${file}...`)
console.log('Exporting all frames with aspect ratio: ' + (dim.w / dim.h) + '...'); console.log(`Exporting all frames with aspect ratio: ${dim.w / dim.h} ...`)
fs.mkdirSync(_tmp); fs.mkdirSync(_tmp)
exec(execStr, function (ste, std) { exec(execStr, (ste, std) => {
if (ste) { if (ste) {
return errorHandle(ste); return errorHandle(ste)
} }
console.log('Frames exported successfully!'); console.log('Frames exported successfully!')
stitch(loc.substring(0, loc.length - 1), dim); stitch(loc.substring(0, loc.length - 1), dim)
}); })
}; }
var stitch = function (loc, dim) { /** *
'use strict'; * Stitch rendered frames into strips
var length = Math.floor((11 * dim.dpi) / dim.h) - 1,
width = Math.floor((8.5 * dim.dpi / dim.o)) - 1, * @function
page = 0, * @param {String} loc Path of folder containing frames
pageCount = 0, * @param {Object} dim Dimensions object
cmd = 'find "' + loc + '" -type f -name "sequence_*.jpg"', *
find_cb = function (ste, std) { */
function stitch (loc, dim) {
const length = Math.floor((11 * dim.dpi) / dim.h) - 1
const width = Math.floor((8.5 * dim.dpi / dim.o)) - 1
let page = 0
let pageCount = 0
let cmd = `find "${loc}" -type f -name "sequence_*.jpg"`
function find_cb (ste, std) {
if (ste) { if (ste) {
return errorHandle(ste); return errorHandle(ste)
} }
var frames = std.split('\n'), const frames = std.split('\n')
execStr = 'montage ', let execStr = 'montage '
montage_cb = function (stee, stdd) { function montage_cb (stee, stdd) {
if (stee) { if (stee) {
return errorHandle(ste); return errorHandle(ste)
} }
console.log('Created page_' + pageCount + '.jpg!'); console.log(`Created page_${pageCount}.jpg!`)
pageCount++; pageCount++
if (pageCount === page) { if (pageCount === page) {
console.log('Cleaning up...'); console.log('Cleaning up...');
setTimeout(function () { setTimeout(() => {
exec('find "' + loc + '" -type f -name "sequence_*.jpg" -delete', function () { exec(`find "${loc}" -type f -name "sequence_*.jpg" -delete`, () => {
fs.rmdirSync(_tmp); fs.rmdirSync(_tmp)
console.log('Done!'); console.log('Done!')
}); })
}, 1000); }, 1000)
} }
}; };
for (var i = 0; i < frames.length; i++) { for (let i = 0; i < frames.length; i++) {
execStr += frames[i] + ' '; execStr += frames[i] + ' '
if ((i + 1) % (width * length) === 0 || i === frames.length - 1) { if ((i + 1) % (width * length) === 0 || i === frames.length - 1) {
execStr += '\ -tile 1x' + length + ' -geometry ' + dim.w + 'x' + dim.h + '+' + Math.round((dim.o - dim.w) / 2) + '+0 miff:- |\ \nmontage - -geometry +0+0 -tile ' + width + 'x1 -density ' + dim.dpi + ' "./page_' + page + '.jpg"'; execStr += '\ -tile 1x' + length + ' -geometry ' + dim.w + 'x' + dim.h + '+' + Math.round((dim.o - dim.w) / 2) + '+0 miff:- |\ \nmontage - -geometry +0+0 -tile ' + width + 'x1 -density ' + dim.dpi + ' "./page_' + page + '.jpg"'
exec(execStr, montage_cb); exec(execStr, montage_cb)
execStr = 'montage '; execStr = 'montage '
page++; page++
} }
} }
};
loc = _tmp;
console.log('Stitching frames into sheets...');
console.log('Sheets will contain ' + width + 'x' + length + ' frames...');
exec(cmd, find_cb);
};
var errorHandle = function (err) {
'use strict';
if (process.argv.indexOf('-v') !== -1 || process.argv.indexOf('--verbose') !== -1){
console.error(err);
} else {
console.error('Error running program. Run in verbose mode for more info (-v,--verbose)');
} }
process.exit(1);
loc = _tmp
console.log('Stitching frames into sheets...')
console.log(`Sheets will contain ${width}x${length} frames...`)
exec(cmd, find_cb)
};
var errorHandle = function (err) {
if (process.argv.indexOf('-v') !== -1 || process.argv.indexOf('--verbose') !== -1){
console.error(err)
} else {
console.error('Error running program. Run in verbose mode for more info (-v,--verbose)')
}
process.exit(1)
}; };
process.on('uncaughtException', function (err) { process.on('uncaughtException', function (err) {