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Improved detection of avif images

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This commit is contained in:
SG-O 2022-07-08 20:33:08 +02:00
parent 87cecc9540
commit 0a9d11d8d3
1 changed files with 8 additions and 6 deletions
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14
src/matrix/MatrixLiteClient.ts
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@ -159,7 +159,7 @@ export class MatrixLiteClient {
url: url,
encoding: null,
headers: {
'Range': 'bytes=0-16'
'Range': 'bytes=0-32'
},
}, (err, res, _body) => {
if (err) {
@ -179,17 +179,19 @@ export class MatrixLiteClient {
}
public parseFileHeaderMIME(data: Buffer): string {
const s = data.slice(0,12);
const s = data.slice(0,32);
if (s.slice(0,8).includes(Buffer.from("89504E470D0A1A0A", "hex"))) {
return("image/png");
} else if (s.slice(0,3).includes(Buffer.from("474946", "hex"))) {
return("image/gif");
} else if (s.slice(0,3).includes(Buffer.from("FFD8FF", "hex"))) {
return("image/jpeg");
} else if (s.slice(0,12).includes(Buffer.from("000000206674797061766966", "hex"))) {
return("image/avif");
} else if (s.slice(0,12).includes(Buffer.from("000000206674797061766973", "hex"))) {
return("image/avif-sequence");
} else if (s.slice(0,3).includes(Buffer.from("000000", "hex")) && s.slice(4,8).includes(Buffer.from("66747970", "hex"))) {
if (s.slice(16,28).includes(Buffer.from("61766973", "hex"))) {
return("image/avif-sequence");
} else if (s.slice(16,28).includes(Buffer.from("61766966", "hex"))) {
return("image/avif");
}
} else if (s.slice(0,4).includes(Buffer.from("52494646", "hex")) && s.slice(8,12).includes(Buffer.from("57454250", "hex"))) {
return("image/webp");
}