tree cf96799dfda11865cf6ebf27da4018ee648629a7
parent c59ba3a0e18b12e32bc52d5f758b99a48df4380e
author Alicia Boya García <aboya@igalia.com> 1537561442 +0200
committer Thibault Saunier <tsaunier@igalia.com> 1537625501 -0300

matroskademux: Emit no-more-pads after parsing Tracks

Currently matroskademux does not emit no-more-pads until the first
Cluster is parsed, even though the Tracks have already been parsed and
from that point on there can be no more tracks.

This is important in MSE because the browser needs to know when the MSE
initialization segment has been completely parsed so that it can expose
the tracks to the user. Some applications depend on this been done
before they feed frames to the demuxer.

As a consequence, historically WebKit has relied on hacks such as
listening to the `pad-added` event, which made impossible to support
multiple tracks in the same file. Let's fix that.

https://bugzilla.gnome.org/show_bug.cgi?id=797187