1127775 - Properly handle partial init segment

Status: RESOLVED INVALID

(Core :: Audio/Video, defect)

Description

[Jean-Yves Avenard [:jya]]

As per W3C spec:
http://w3c.github.io/media-source/#sourcebuffer-segment-parser-loop

We're supposed to handle partial init segment.

Part of bug 1125776, is to be able to fire the update/updateend event once we've completed parsing the init segment.

Support for partial MP4 init segment is almost there as all blocks are there. For WebM it's more complicated.

Comment 1

[Jean-Yves Avenard [:jya]]

will do so in bug 1125776.

Comment 2

[Jean-Yves Avenard [:jya]]

Attachment: Add support for partial WebM init segment

Add webm partial init segment support. This is done with a small utility class WebMCheckMetadata that checks if a MediaResource starts with an init segment. This uses libnestegg as their init routine does just that. Ideally we could have expanded WebMBufferedParser but it would have been more complicated and I would have had to learn the inner details of the webm container. Parsing a MediaResource also allows to buffer the data over multiple-calls to appendBuffer with a minimal memory footprint (SourceBufferResource uses ref-counted shared memory block).

Comment 3

[Jean-Yves Avenard [:jya]]

Attachment: Add support for partial WebM init segment

Combine the two patches together as the nestegg approach just doesn't work under all circumstances.

Comment 4

[Jean-Yves Avenard [:jya]]

Comment on attachment 8557685 [details] [diff] [review]
Add support for partial WebM init segment

wrong bug number