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update logos, and image decoder settings in config

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zefie
2026-04-26 15:23:34 -04:00
parent afa557ae37
commit 14ab33026e
7 changed files with 286 additions and 19 deletions
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23
zefie_wtvp_minisrv/includes/classes/WTVImage.js
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@@ -23,6 +23,8 @@
*
* Decoder reverse-engineered from:
* https://gist.github.com/PajamaFrix/399c0785c5bb3b1d80757e84a0c1d6ab
*
* TODO: Fix ALP Generation (decoding works but encoding does not yet produce correct ALP files)
*/
const sharp = require('sharp');
@@ -958,10 +960,23 @@ class WTVImage {
* @param {number} [opts.colors=256] - palette size for full-color quantization
* @param {'ALP'|'ALF'} [opts.type='ALF'] - Artemis variant
* @param {number} [opts.jpegQuality=85] - JPEG quality (0-100) when no alpha
* @param {number} [opts.maxWidth] - maximum width to scale to before encoding
* @param {number} [opts.maxHeight] - maximum height to scale to before encoding
* @returns {Promise<{ data: Buffer, mime: string }>}
*/
async ImageToWebTV(input, opts = {}) {
const pngBuf = Buffer.isBuffer(input) ? input : require('fs').readFileSync(input);
let pngBuf = Buffer.isBuffer(input) ? input : require('fs').readFileSync(input);
const maxWidth = Number(opts.maxWidth) > 0 ? Number(opts.maxWidth) : null;
const maxHeight = Number(opts.maxHeight) > 0 ? Number(opts.maxHeight) : null;
if (maxWidth || maxHeight) {
const resizeOpts = { fit: 'inside', withoutEnlargement: true };
if (maxWidth) resizeOpts.width = maxWidth;
if (maxHeight) resizeOpts.height = maxHeight;
pngBuf = await sharp(pngBuf)
.resize(resizeOpts)
.png()
.toBuffer();
}
const meta = await sharp(pngBuf).metadata();
let usesAlpha = false;
@@ -989,8 +1004,10 @@ class WTVImage {
if (this.isPalettePNG(pngBuf)) {
// Palette/indexed PNGs should preserve palette + tRNS alpha exactly by default.
// Allow forcing re-quantization only when explicitly requested.
const data = opts.forceRequantizePalette
// If resizing was applied, the palette is no longer preserved and we must
// re-quantize the image before producing an Artemis GIF.
const forceRequantize = opts.forceRequantizePalette || maxWidth || maxHeight;
const data = forceRequantize
? await this.encodeArtemisGIF(pngBuf, opts)
: await this.paletteImageToArtemisGIF(pngBuf, opts);
return { data, mime: 'image/gif' };