Commit Graph

12 Commits

Author SHA1 Message Date
Theodore Abshire d46e8fdf92 Typo fixes and rewording in comments, part 6
This makes a large number of small typo fixes. It also rewords a
number of comments and JSDoc descriptions, and does some
formatting standardization.

This doesn't fix every single issue, but it fixes a lot. Notably,
there were some formatting issues I declined to standardize due to
ambivalence on what the proper standardization would be; for example,
when and where empty lines should show up in JSDoc.

Change-Id: I2bfa4d531a8fcdcf9578e9c181c4534ad7443b7a
2018-03-21 17:59:42 +00:00
Jacob Trimble 624acc66b8 Add curly braces to all blocks.
Google style guide requires adding curly braces to all block statements
even if it is only has one line.  This fixes it by using eslint's
--fix flag followed by running clang-format to reformat the change.

Change-Id: Idc086c2aa8c02df5ef8b2140a11bfb9128eeb4bd
2018-02-21 11:23:34 -08:00
Jacob Trimble b512db87dd Convert 'var' to 'let'/'const' (8 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: I6a329d28e13a81c9f7136737518c6bb8fa18402e
2018-02-20 11:29:30 -08:00
Sandra Lokshina 118756e8e8 Add parsing of VTTRegions and TTML attributes set in pixels.
Closes #1188

Change-Id: Ib9fc1a5b35065fdadafae01df4737ce1dcfa3ada
2018-02-08 18:19:31 +00:00
Joey Parrish d36168a55f Protect against WebVTT MPEGTS rollover
When the MPEGTS field rolls over in HLS live WebVTT, we need to avoid
our parsed cue timestamps rolling over as well.  To achieve this, we
simply ignore the X-TIMESTAMP-MAP tag once the segment index is built.

Rollover in TS video and audio segments is handled by mux.js already.

Closes #1191

Change-Id: Ie52734509921973ff47517fab34367ec413a6ca6
2018-01-19 21:48:35 +00:00
Joey Parrish 4067c20a7c [ES6] Replace gjslint with compiler linter & eslint
The eslint configuration is derived from analyzing the style of our
sources as they are now, plus a few tweaks.

In particular, we have disabled checks for undefined variables and use
of console, both of which the compiler handle with greater precision.
The compiler already knows what is defined in the environment through
our externs, and has specific exceptions for the use of console (demo,
tests).

We have also disabled a few checks that we should use, but will
require many changes to the code: no-unused-vars, no-redeclare,
and comma-dangle.

This commit also fixes several types of eslint errors that were easy:
  - no-useless-escape (unneccessary escape characters in Regexp)
  - no-constant-condition (using true/false/0/1/etc in if/while)
  - no-fallthrough (caught an actual bug in one EME polyfill)
  - no-irregular-whitespace (we had a UTF-8 nbsp in externs)
  - no-cond-assign (using an assignment inside a conditional)

To satisfy stricter provide/require checks in the Closure Compiler
Linter, we will no longer use provide/require at all in tests.  We
will still use provide in test utilities (test/test/util/) since it
sets up the namespace for us.  But we will not use require there
because there is no deps management for test code.

Issue #1157

Change-Id: Icc44f51feeb568ea7d3980e693e92e560d897afd
2018-01-16 17:25:05 +00:00
Joey Parrish 66bfa31538 Do not use VTTRegion yet
Our use of VTTRegion seems to be wrong.  The feature in Chrome is
behind the "experimental web platform features" flag.  If this is
turned on, we display subtitles in the wrong place.

Until we can verify and fix our usage of VTTRegion, we will not
use it.  There are other issues to deal with in our region support,
in particular that TTML uses px and VTT uses percentages.  Futher,
our VTT parser does not yet extract region information.

This fixes the main issue for v2.3, so that future releases of Chrome
do not break sites built with v2.3.  There is more work to do in v2.4.

Issue #1188

Change-Id: I0de3392bdfca381c3727580e66c1a57ec457c5c2
2017-12-18 22:39:20 +00:00
Joey Parrish 9759eddf54 Ignore style blocks in WebVTT
We do not support CSS embedded in WebVTT at this time.  Instead of
failing to parse the cues, skip the style block.

Closes #1104

Change-Id: I3d500ba11afe43e81bbdef9924e4dd9e05db2b85
2017-12-05 23:31:23 +00:00
Joey Parrish a7dec51f76 Make VTT settings parser more flexible
We can now accept non-integral values in settings, such as
"position: 100.0%" instead of just "position: 100%".

The regex change is very simple, so we would also accept invalid
settings such as "position: 12.34.56%" or "position: ...%", both
of which would result in NaN in the output.

Issue #919

Change-Id: I0a437322e76e35fe1d2f369b4a3ea87269799431
2017-08-04 21:28:15 +00:00
Sandra Lokshina 2aefcb8eb6 TtmlParser: add support for tts:direction attribute.
Closes #927.

Change-Id: If7394ecbbee861ad5b60c3c2bfd929ecd999db3e
2017-07-31 18:44:15 +00:00
Sandra Lokshina c70367dc97 Separate text parsing and display logic.
Closes #796.
Closes #923.

Change-Id: Ifc2017b40a0fb570103f0fed7bc130aa24819e9f
2017-07-17 21:39:59 +00:00
Sandra Lokshina c6c6d05810 Move text-related files into their own directory.
This change creates a lib/text directory and moves all files
with text-related logic to it. It also lays the ground for
separating text parsing and display logic. (That change will
introduce even more files with text-related logic which will
crowd lib/media directory).

Issue #796.

Change-Id: I65ac134020a0126ff02a8f2067beb73870232e65
2017-06-06 18:21:09 +00:00