We misinterpretted the EXT-X-START tag before. Now, we ignore this
tag and parse segment times from the segments themselves. This is
more robust for both VOD and live HLS content.
We avoid segment parsing when updating normal, well-behaved live
streams. For poorly-behaved live streams, we will fall back to
segment parsing and recover.
This also addresses the issue of VOD content which does not start at
zero. Instead of using configuration to make this playable, we will
now offset VOD content back to 0 automatically.
Issue #740Closes#1011
Change-Id: Ib3a59f87e3a050244cd39854409d8e3542c50b0a
Instead of filling the URI templates when parsing the manifest,
wait until the request is made to fill it. This reduces the time
it takes to parse the manifest.
This was tested using a stream with a 24-hour timeShiftBufferDepth.
Using a Chromebook pixel running Chrome 51. The average manifest
parse time was about 1 second before, now it is about 200ms.
Issue #405
Change-Id: I89f36085441f6c6b7d6281b24b671dc668f23fe5
Using goog.asserts will work with the compiler. So rather than
simply casting a nullable value when passing to a method, we can use
an assert which will correct the type and print a log if it somehow
is null.
This is not the same goog.asserts found in closure library, this
simply calls console.assert, but it is not required to do anything
for the compiler help.
Change-Id: I2548e39e772f0aa7ec41437cf9f5a2be383e0fbd
Before there were two style to indent comments after an annotation,
using 2 and 4 spaces. Now this only uses 2 spaces.
Change-Id: Id06415d7193cc154a2768fb3932aff7a06b7ed32
* Tidy up unit tests, and add more eviction tests and drift tests.
* Add integration tests.
* Handle end-of-stream and end-of-Period scenarios when segments
are not perfectly aligned to Period boundaries.
* Use segment receipts to determine which segment to buffer next.
* Handle drift with eviction and other drift corner cases.
* Handle additional errors and improve overall robustness.
Change-Id: Ib57a255cda7a6e8c5857eb82accc14697983b893
This is important to avoid renaming properties during compilation so
that applications can inject these types without compiling their code.
This also migrates record typedefs to the new documentation format.
Each record will be annotated with 'property' for each field in the
record. This results in better output from jsdoc.
Change-Id: Ia877b1e2b333ef7020a85f16bc2469a20879bf94
Renamed variables to only use URI instead of URL. Also made variable
names plural when referring to an array of choices.
Change-Id: I7bfd5022606d77a3153575d8f13dd1e040331901
* Updates all Copyright years to 2015.
* Adds licenses annotations to all JS.
* Makes all licenses identical to avoid repeated appearance in the
compiled output.
* Drops fileoverview annotations, which do not affect docs output.
* The linter still requires fileoverview on externs.
This patch required a newer closure compiler, since the previous
version we used had a bug regarding license annotations that caused
the license comment block to appear in the output once per file
regardless of uniqueness.
Change-Id: I2e9272db680cba7ecc4613d97f1d3a94ac2244cc
This reverts commit 8cb24652cb, due to
the fact that the new annotations caused our binary size to jump
by 52%.
The compiler preserves all 'unique' licenses, which causes trouble
since the comment blocks with the license annotations are not unique
and contain file overview comments as well.
We can re-examine this once we have restructured the license headers.
Change-Id: I418e407a0e0253630633697f30cf496a7fc2ddfc
Added a new class called FailoverUri which handles multiple URLs and
switches to others when one fails. This is also handles the request
itself. This replaces SegmentMetadata as well as a number of manual
requests.
The MPD parser now produces arrays of URIs rather than just one. The
MPD Processor then converts it to a FailoverUri inside the manifest.
Added unit tests to test the new functionality and updated the old ones
to the new changes.
This does not support failover on subtitles since subtitles are handled
by the browser.
Closes#68
Change-Id: I5410104827b9e4102b243444b1b5a3f01dcaf10d
* Move seek range updates into SegmentIndex implementations
and StreamVideoSource.
* Remove unnecessary sub-class hooks from StreamVideoSource.
* Remove internal LiveSegmentIndex timer: do SegmentReference eviction
and generation on demand.
* Rework Stream startup again: consider Streams as started when they
have buffered some minimum amount of content. As part of this, only
apply a timestamp correction to the SBM when the streams have started.
* Defer stream switches until all SegmentIndexes have been corrected.
* Partially revert optimistic "bufferedAhead" calculations in Stream:
check if we've buffered enough content at least every second.
* Make LiveSegmentIndex more robust against a "wrong"
@availabilityStartTime.
* Fix a bug where a positive timestamp correction would trigger an extra
Stream resync.
* Fix a bug in evict_() where the first segment would never get evicted.
* Check stream started conditions in onUpdate_ instead of after a segment
has been inserted.
* Tidy-up immediate/clearBuffer naming and other comments.
Closes#51Closes#109
Change-Id: Ic6f0b96065d3c5dfb5c03ca1c52363bd77b22875
* Allow segments from different streams (Representations) to coexist
in buffer.
* Only fetch a single segment at a time.
* Remove id field from SegmentReference and remove SegmentRange.
* Only start the Streams once the buffer is "full".
* Stop DashVideoSource from triggering an extra resync during startup.
* Make Task.abort call order deterministic.
A follow-up patch is required to handle certain seek patterns in
live streams.
Issue #51
Change-Id: Ib7c9021471f1ed89323f19764463202b119cb491
* Rename SegmentIndex functions to shorter names.
* Add first() and last() functions for convenience.
* Throw exceptions for out of range errors.
* Handle more corner-cases in merge().
* Add more unit tests.
Change-Id: If875cd766e7091504c028413694326fcdf2aae5b
* The segmentNumber member in SegmentReference is used as an ID,
so rename it and update the doc string.
* Tidy up SegmentIndex unit tests.
Change-Id: I888b8cbfd6a198bab09f6ab846cbdbf70cfcaa5a
* Construct the initial SegmentIndex for a live stream such that it
includes at least @timeShiftBufferDepth seconds of content before
the "live-edge".
* Use segment numbers relative to @startNumber instead of relative
to the start of the Period in SegmentReference to handle MPDs
with partial segment information.
* Start live streams near the "live-edge", a.k.a., "best start time",
and start static streams at the latest start time.
Issue #21
Change-Id: I3c553a1b7120a59c68f19cdc85f412f31972c1b8
* Implement an update() method on StreamVideoSource that merges
a new manifest into its existing one.
* Re-fetch and re-process MPDs from DashVideoSource to generate new
SegmentReferences.
* Compute last available segment numbers and times in MpdProcessor
when generating SegmentLists.
* Re-work Period computation in MpdProcessor.
* Handle stream EOF differently for live content.
Additional work is required to handle all "styles" of manifests.
Issue #21
Change-Id: I38be9513dc73e4683d1079b4dedb489e8206043d
* Move internal non-DASH specific code into the 'media' namespace.
* Remove DASH references from generic stream code.
The documentation is not changed as a follow-up patch will factor out
DASH functionality from StreamVideoSource back into a new
DashVideoSource class.
b/18903621
Change-Id: I78d6e4f2824d4983619f17872828d95655fcfe50
Joey Parrish
Jacob Trimble
Timothy Drews
Yohann Connell