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add caching to getCoverBuffer

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when downloading an album, will no longer re-download an encode identical cover images
This commit is contained in:
Araxeus
2023-03-12 19:11:54 +02:00
parent c5781962f4
commit 83abbdb25a
1 changed files with 22 additions and 3 deletions
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25
plugins/downloader/back.js
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@ -23,6 +23,13 @@ const ffmpeg = require("@ffmpeg/ffmpeg").createFFmpeg({
});
const ffmpegMutex = new Mutex();
const cache = {
getCoverBuffer: {
buffer: null,
url: null,
}
}
const config = require("./config");
/** @type {Innertube} */
@ -189,13 +196,25 @@ async function iterableStreamToMP3(stream, metadata, content_length, sendFeedbac
}
}
async function getCoverBuffer(url) {
const store = cache.getCoverBuffer;
if (store.url === url) {
return store.buffer;
}
store.url = url;
const nativeImage = cropMaxWidth(await getImage(url));
store.buffer = nativeImage && !nativeImage.isEmpty() ?
nativeImage.toPNG() : null;
return store.buffer;
}
async function writeID3(buffer, metadata, sendFeedback) {
try {
sendFeedback("Writing ID3 tags...");
const nativeImage = cropMaxWidth(await getImage(metadata.image));
const coverBuffer = nativeImage && !nativeImage.isEmpty() ?
nativeImage.toPNG() : null;
const coverBuffer = await getCoverBuffer(metadata.image);
const writer = new ID3Writer(buffer);