rdarius/nodejs-ascii-video-converter
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

automated converting between gif and mp4 with single image convertion separated

Browse Source
This commit is contained in:
Darius Rapalis
2022-02-14 01:11:09 +02:00
parent 2395866988
commit f25b7868d7
12 changed files with 423 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
convertToAscii.js
View File

@@ -1,4 +1,5 @@
module.exports = convertToAscii = async (file, dotSize = 24, verticalSpacinModifier = 4, output = __dirname + '/tmp.img.png') => {
module.exports = convertToAscii = async (file = __dirname + 'input.png', output = __dirname + '/output.png', dotSize = 24, verticalSpacinModifier = 4, callback) => {
console.log('converting image to ascii');
const hobbitImageFile = file;
const density = 'Ñ@#W$9876543210?!abc;:+=-,._ ';
@@ -33,6 +34,11 @@ module.exports = convertToAscii = async (file, dotSize = 24, verticalSpacinModif
ctx.fillStyle = 'black';
ctx.fillRect(0, 0, hobbit.width * dotSize, hobbit.height * dotSize);
ctx.font = (dotSize + verticalSpacinModifier) + "px Courier";
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = `white`;
for(let x = 0; x < hobbit.width; x++) {
for(let y = 0; y < hobbit.height; y++) {
@@ -42,22 +48,16 @@ module.exports = convertToAscii = async (file, dotSize = 24, verticalSpacinModif
const b = hobbit.pixels[pixelPosition + 2];
const a = hobbit.pixels[pixelPosition + 3];
const avg = Math.floor((r+g+b)/ 3);
const avg = Math.floor((r+g+b)/ 3) * (a/255);
const gray = map(255 - avg, 0, 255, 0, density.length);
ctx.font = (dotSize + verticalSpacinModifier) + "px Courier";
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = `white`;
ctx.fillText(density.charAt(gray), x*dotSize + dotSize/2, y*dotSize + dotSize/2);
}
}
ImageDataURI.outputFile(canvas.toDataURL(), output);
console.log(output, 'converted');
res(1);
});
});
callback(output);
}