49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
|
use ebml::*;
|
||
|
|
|
||
|
|
const SEGMENT_ID: u64 = 0x08538067;
|
||
|
|
const SEEK_HEAD_ID: u64 = 0x014D9B74;
|
||
|
|
const SEGMENT_INFO_ID: u64 = 0x0549A966;
|
||
|
|
const CUES_ID: u64 = 0x0C53BB6B;
|
||
|
|
const TRACKS_ID: u64 = 0x0654AE6B;
|
||
|
|
const CLUSTER_ID: u64 = 0x0F43B675;
|
||
|
|
pub struct Webm;
|
||
|
|
|
||
|
|
#[derive(Debug, PartialEq)]
|
||
|
|
pub enum WebmElement<'b> {
|
||
|
|
EbmlHead,
|
||
|
|
Void,
|
||
|
|
Segment,
|
||
|
|
SeekHead,
|
||
|
|
Info,
|
||
|
|
Cues,
|
||
|
|
Tracks(&'b[u8]),
|
||
|
|
Cluster(&'b[u8]),
|
||
|
|
Unknown(u64)
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<'a> Schema<'a> for Webm {
|
||
|
|
type Element = WebmElement<'a>;
|
||
|
|
|
||
|
|
fn should_unwrap(&self, element_id: u64) -> bool {
|
||
|
|
match element_id {
|
||
|
|
// Segment
|
||
|
|
SEGMENT_ID => true,
|
||
|
|
_ => false
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn decode<'b: 'a>(&self, element_id: u64, bytes: &'b[u8]) -> Result<WebmElement<'b>, Error> {
|
||
|
|
match element_id {
|
||
|
|
EBML_HEAD_ID => Ok(WebmElement::EbmlHead),
|
||
|
|
VOID_ID => Ok(WebmElement::Void),
|
||
|
|
SEGMENT_ID => Ok(WebmElement::Segment),
|
||
|
|
SEEK_HEAD_ID => Ok(WebmElement::SeekHead),
|
||
|
|
SEGMENT_INFO_ID => Ok(WebmElement::Info),
|
||
|
|
CUES_ID => Ok(WebmElement::Cues),
|
||
|
|
TRACKS_ID => Ok(WebmElement::Tracks(bytes)),
|
||
|
|
CLUSTER_ID => Ok(WebmElement::Cluster(bytes)),
|
||
|
|
_ => Ok(WebmElement::Unknown(element_id))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|