Commit Graph

36 Commits

Author SHA1 Message Date
Michelle Zhuo 8c8552ae7c Update media files to ES6
Issue #1157

Change-Id: I82213c9a20e7aa6e506732dc0295a61d2a67b1ec
2019-05-31 17:44:36 +00:00
Jacob Trimble 47daf49f31 Use arrow functions for callbacks.
This is an automated change to convert use of "function" functions
to arrow functions.  This doesn't change all uses of bind() that
could be converted.  This also doesn't remove all "function" functions.

Change-Id: I40ac7d086bcef947a1be083359c8fd1d4499a9c3
2019-05-09 16:40:46 +00:00
Jacob Trimble c81389741f Prefer const over let.
A coming update to the Google eslint config will require using "const"
over "let".  This makes that one change to isolate the big changes.

Change-Id: I7d0974c3ae15c53cc45a6b07bf9f6586e2d34aca
2019-05-08 09:22:10 -07:00
Theodore Abshire 0726543a04 Made ParsedBox into an extern
The ParsedBox structure used by the Mp4Parser, previously, had
its property names changed in compiled mode.
This makes ParsedBox into an extern, so that it will be preserved
unchanged in compiled mode.

Closes #1522

Change-Id: I0964f8a4b9ccea57c61e2c587a776ed76cfbc8da
2018-08-06 22:10:40 +00:00
Joey Parrish fd0449d8f7 Re-enable some disabled style rules
This re-enables the following style rules:
  - "block-spacing"
  - "brace-style"
  - "comma-dangle"
  - "comma-spacing"
  - "new-cap"
  - "no-multi-spaces"
  - "no-multiple-empty-lines"
  - "one-var"
  - "padded-blocks"
  - "prefer-rest-params"

Change-Id: I15d616e8d5b88b273ded6128b4f9ad86bdb26bd1
2018-07-09 19:44:56 +00:00
Jacob Trimble b2bde18a3d Convert 'var' to 'let'/'const' (5 of 9).
This is part of a change to convert all usages of 'var' with either
'let' or 'const'.  This takes a conservative approach for 'const' where
it will only be used for aliases and storing the "original" values in
tests.

Change-Id: If4792c1bd3d5a82c24a4b2f0f84790d4eed22e67
2018-02-20 11:26:46 -08:00
Joey Parrish b54ca32835 Do not assume same timescale in manifest and media
According to the DASH spec, the timescale in the manifest need not match the
timescale in the media.  Therefore, we should be applying scaled
presentationTimeOffsets in segment index parsers, since the two scales might
differ.

Issue #1098

Change-Id: Ic191d1bba399b30a656ab5060d7bb226e659b79a
2017-11-09 21:37:17 +00:00
Joey Parrish a93455a917 Make partial segment requests in HLS parser
This speeds up HLS stream startup significantly for servers that
permit this kind of request, and falls back to full segments for
servers that do not.

Closes #1106

Change-Id: I96bc7f0df0fb84b75f3a3fe43476ba0ba5fc2264
2017-11-07 19:44:35 +00:00
Joey Parrish 5166699e10 Fix PTO for SegmentBase
In DASH SegmentBase, we were not dividing presentationTimeOffset by
the timescale.  In all other instances of presentationTimeOffset in
DASH, we were handling it correctly.

This bug was present in all v2 releases until now.

The solution is not only to divide by timescale, but to rename all
internal uses of presentationTimeOffset to either unscaled or scaled,
to differentiate between those in timescale units and those in
seconds.  I believe inconsistent naming and units were a contributing
factor to the creation of the bug.

Closes #1099

Change-Id: Id561f8eb1f5bc011c606e1925c12f0d8183fd51a
2017-11-01 11:25:51 -07:00
Jacob Trimble 575f2ad109 Add an indicator for critical errors.
This adds a severity field to Error objects.  This can be used to
detect whether an error is recoverable.  All the same errors are still
reported so the field can be ignored.

There are two possible values:
* RECOVERABLE means that the Player will try to recover from the error
* CRITICAL means the Player will be unable to continue and must call
  load() again

Closes #564

Change-Id: Ie2c5468340c13e7a288b99690ab65b7ecc0a6b29
2017-04-04 23:57:59 +00:00
Aaron Vaage ca87772a60 Define Mp4Box Using Strings
When defining a box, the box would be defined as a four
byte integer. Now there is a "fromString" function that
can be used to convert a four character assci string to
a four byte integer.

Change-Id: I78c704e012620c94ae681efb450977305bdb84aa
2017-03-22 23:13:24 +00:00
Aaron Vaage 175870fb4d MP4 Parser Refactoring
Before parsing Mp4Boxes was done using the "findBox" method. This
was limted to only looking at one level of the structure and
required a large amount of code to dig deeper into the structure.

This change creates a generalized Mp4 Box parser that should
simplify parsing Mp4Boxes. This will help work on #699.

Change-Id: Ie67ff30a6db890cae16fe02ae9c92bca711815a9
2017-03-16 22:46:19 +00:00
Jacob Trimble fc46b29ed8 Move 'emsg' handling to StreamingEngine.
Rather than having it in the DashParser as a network response filter,
we should have it in StreamingEngine.  This will give it access to the
segment times so we can calculate the presentation times for the event.
Otherwise, there is no way to know when the event should actually occur
since the app can't know which segment is being downloaded or which it
came from.

This also adds startTime and endTime fields to the event so the app
doesn't have to calculate them.  For reverse compatibility, the old
fields will still exist.

Closes #698

Change-Id: Icbaf3619aedfca7ea06bc8b1fe49e9cce65b0cc2
2017-02-23 19:36:06 +00:00
Andy Hochhaus 6a00ee8a31 Add missing goog.require 2016-07-23 14:42:38 -07:00
Sandra Lokshina fcb4df53ca Refactor Mp4SegmentIndexParser and add unit tests and a test asset for it.
Change-Id: I216d389fa53d8f6aa1ffdd1111bdcd965ce1732f
2016-07-20 22:14:55 +00:00
Jacob Trimble a3c1ed29d4 Defer filling URI template until request is made.
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
2016-06-23 21:15:19 +00:00
Costel G d56cbb1385 Add PTO support for SegmentBase 2016-03-20 15:36:28 +02:00
Jacob Trimble 19973d63f4 Changed copyright headers from 2015 to 2016.
Change-Id: I429ff27e4794c03b7ea392e38415075077f9bfb1
2016-03-15 16:32:13 -07:00
Jacob Trimble 8daf53e329 Renamed shaka.asserts to goog.asserts.
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
2016-03-11 15:29:20 -08:00
Jacob Trimble 846e7beb48 Unified comment spacing.
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
2016-03-10 16:27:45 -08:00
Jacob Trimble 54fa88f6f0 Added Dash manifest parser.
b/25851171

Change-Id: I4fbd6410d579899b749b50c8819fa8c17ac80658
2016-01-13 19:29:07 +00:00
Jacob Trimble 0b4ba1f8f8 Unified naming of variables about URIs.
Renamed variables to only use URI instead of URL.  Also made variable
names plural when referring to an array of choices.

Change-Id: I7bfd5022606d77a3153575d8f13dd1e040331901
2015-12-16 16:37:04 -08:00
Timothy Drews 7a39dce09e Update SegmentIndex functions within the Manifest.
StreamingEngine will require lookup by position and not
just by time.

Change-Id: Ic0f46173f42aa5e4689687e54c7f5f89779ec855
2015-12-14 17:25:35 +00:00
Joey Parrish 1d1a0fcb46 Enable all compiler errors
This also cleans up compiler errors for:
  - Things required but not used
  - Things used but not required
  - Write-only local variables

We are suppressing the 'unnecessaryCasts' error in specific places
where it is, in fact, necessary to convert between unrelated types
for polyfills and work-alikes.

Change-Id: I155c746116f95383ea0a9caf9239fadccd8601af
2015-12-11 13:30:44 -08:00
Joey Parrish c934f426d8 Add new error type
This error type will be used for all internal errors, and will rely
on numeric error codes which can be easily checked by the application.

This also changes PSSH parsing to throw on errors instead of retaining
partial data.

Issue #201
b/25306826

Change-Id: I19d23d99d4ee72cb31fe5f233bac57a3a9cfc283
2015-12-04 10:26:08 -08:00
Joey Parrish 9dbd6e6549 Add messages to all assertions
This makes debugging easier when an assertion fails.

Change-Id: I362e58706c71a12cffcda84dcd0b9ad281c51f30
2015-12-04 02:17:28 +00:00
Jacob Trimble 7e20a8ea68 Updated WebM and MP4 segment index parsers.
* No longer uses FailoverUri.
* Uses string URIs directly.
* WebM now gets the last segment's duration.

Change-Id: I1b17f95c4f3fed4bf7e46964687670860240cc2b
2015-12-04 01:08:04 +00:00
Jacob Trimble 9701e184e5 Imported WebM and MP4 index parsers from master branch.
These will not work as-is because FailoverUri is removed.  I will
update them in another change.

Change-Id: If8951f6499c13f83f33d5c7a14d86038793a11e1
2015-12-03 14:29:27 -08:00
Joey Parrish 03df140fb8 https://goo.gl/RvMyq4 2015-11-25 12:14:04 -08:00
Joey Parrish 4cc4e96dbd Overhaul license comments and file annotations
* 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
2015-09-08 12:02:34 -07:00
Joey Parrish 4d9177240a Revert "Adding license annotation to js files."
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
2015-09-04 18:36:39 -07:00
Yohann Connell 8cb24652cb Adding license annotation to js files.
Change-Id: Id10592ccaf35608ac4f01844cae2fec4a2030d65
2015-09-04 00:05:17 +00:00
Jacob Trimble e74ad98eaa Added setNetworkCallback method to dash and offline video sources.
This allows the app to intercept media requests to modify its URLs.
The callback accepts the URL for the request and returns a modified
URL or null to use the original.

Closes #148

Change-Id: I08352754ace05f318706fd93910097c0fa7696f0
2015-08-24 09:35:27 -07:00
Jacob Trimble 899c322995 Added support for multiple BaseURL elements.
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
2015-08-10 16:01:06 -07:00
Timothy Drews fbea2279b3 Re-work stream switching.
* 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
2015-06-18 12:54:25 -07:00
Timothy Drews 22c57e99e4 Rework SegmentIndex functionality.
This patch reworks SegmentIndexes so that any SegmentReference they
contain is guaranteed to be available. This makes SegmentIndexes work
consistently between static content and live content (specifically
content specified using SegmentTemplate with @duration).

* Rework StreamInfo to use a ISegmentIndexSource and a ISegmentInitSource,
  which construct a SegmentIndex and an intiailization segment
  respectively.
* Make ManifestInfo destructible and various async operations in
  StreamVideoSource safer.
* Introduce LiveSegmentIndex, which manages SegmentReference eviction.
* Introduce DynamicLiveSegmentIndex, which manages SegmentReference
  eviction and generation.
* Implement improved segment availability logic for segment eviction.
* Move SegmentIndex construction from MpdProcessor to several
  ISegmentIndexSource implementations.
* Use a SegmentIndex to represent subtitles to simplify Stream creation
  in StreamVideoSource.
* Move manifest update code from StreamVideoSource to ManifestUpdater.
* Move PeriodInfo.duration determination in MpdProcessor to StreamVideoSource.
* Since "forced" manifest updates are no longer required for content
  specified using SegmentTemplate with @duration, simplify manifest update
  code in DashVideoSource.
* Make Stream continue to update even if it runs out of
  SegmentReferences, this simplifies previous resync logic and makes
  DynamicLiveSegmentIndex work seamlessly.
* Refactor SegmentIndex and initialization fetch code in ContentDatabase.
* Download all SegmentIndexes in the background after the initial streams
  have started.

Follow up work is required to remove seek range logic from
DashVideoSource.

Change-Id: I4a908195aba632a911a6e55213fc41d41428162b
2015-06-09 11:46:40 -07:00