Revert is_multiple_of fix, too recent for gecko

padenot · padenot · commit 8c06edad07b0 · 2025-09-25T13:42:18.000+02:00
diff --git a/mp4parse/src/lib.rs b/mp4parse/src/lib.rs
@@ -4485,7 +4485,7 @@ fn read_ftyp<T: Read>(src: &mut BMFFBox<T>) -> Result<FileTypeBox> {
     let major = be_u32(src)?;
     let minor = be_u32(src)?;
     let bytes_left = src.bytes_left();
-    if !bytes_left.is_multiple_of(4) {
+    if bytes_left % 4 != 0 {
         return Status::FtypBadSize.into();
     }
     // Is a brand_count of zero valid?

Original file line number	Diff line number	Diff line change
`@@ -4485,7 +4485,7 @@ fn read_ftyp<T: Read>(src: &mut BMFFBox<T>) -> Result<FileTypeBox> {`
`4485`	`4485`	`let major = be_u32(src)?;`
`4486`	`4486`	`let minor = be_u32(src)?;`
`4487`	`4487`	`let bytes_left = src.bytes_left();`
`4488`		`- if !bytes_left.is_multiple_of(4) {`
	`4488`	`+ if bytes_left % 4 != 0 {`
`4489`	`4489`	`return Status::FtypBadSize.into();`
`4490`	`4490`	`}`
`4491`	`4491`	`// Is a brand_count of zero valid?`