arcodange/mediabunny
1
0
Fork 0
mirror of https://github.com/arcodange-org/mediabunny.git synced 2026-10-02 21:33:52 +02:00
Code Issues Packages Projects Releases Wiki Activity

Fix EBML parsers for large integers, make small API and docblock adjustments

Browse Source
This commit is contained in:
Vanilagy
2025-04-25 17:35:03 +02:00
parent 03b9c6c9ae
commit 7fe0593b6c
11 changed files with 68 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/matroska/ebml.ts
+6 -5
View File
@@ -393,15 +393,14 @@ export class EBMLReader {
const { view, offset } = this.reader.getViewAndOffset(this.pos, this.pos + 1);
const firstByte = view.getUint8(offset);
// Find the position of the first set bit, which determines the width
// Find the position of VINT_MARKER, which determines the width
let width = 1;
let mask = 0x80;
let mask = 1 << 7;
while ((firstByte & mask) === 0 && width < MAX_VAR_INT_SIZE) {
width++;
mask >>= 1;
}
// Read all bytes
const { view: fullView, offset: fullOffset } = this.reader.getViewAndOffset(this.pos, this.pos + width);
// First byte's value needs the marker bit cleared
@@ -409,7 +408,8 @@ export class EBMLReader {
// Read remaining bytes
for (let i = 1; i < width; i++) {
value = (value << 8) | fullView.getUint8(fullOffset + i);
value *= 1 << 8;
value += fullView.getUint8(fullOffset + i);
}
this.pos += width;
@@ -426,7 +426,8 @@ export class EBMLReader {
// Read bytes from most significant to least significant
for (let i = 0; i < width; i++) {
value = (value << 8) | view.getUint8(offset + i);
value *= 1 << 8;
value += view.getUint8(offset + i);
}
this.pos += width;