This commit is contained in:
n1474335 2022-07-08 14:50:57 +01:00
commit 6fa2e49f3a

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@ -70,7 +70,7 @@ export const FILE_SIGNATURES = {
10: 0x42,
11: 0x50
},
extractor: null
extractor: extractWEBP
},
{
name: "Camera Image File Format",
@ -3032,6 +3032,30 @@ export function extractPNG(bytes, offset) {
}
/**
* WEBP extractor.
*
* @param {Uint8Array} bytes
* @param {number} offset
* @returns {Uint8Array}
*/
export function extractWEBP(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
// Move to file size offset.
stream.moveForwardsBy(4);
// Read file size field.
const fileSize = stream.readInt(4, "le");
// Move to end of file.
// There is no need to minus 8 from the size as the size factors in the offset.
stream.moveForwardsBy(fileSize);
return stream.carve();
}
/**
* BMP extractor.
*