Parsing WebVTT Region Header Metadata
https://bugs.webkit.org/show_bug.cgi?id=109818
Reviewed by Eric Carlson.
Source/WebCore:
This patch enables reading regions from the metadata section of
a WebVTT file. The work for defining generic metadata within the
WebVTT file header is still work in progress in the TextTrack CG.
As previous patches, everything is guarded by WEBVTT_REGIONS and
is by default disabled in all ports.
Test: media/track/regions-webvtt/text-track-region-parser.html
* html/track/LoadableTextTrack.cpp:
(WebCore):
(WebCore::LoadableTextTrack::newRegionsAvailable): Added method
to be called as soon as regions have finished parsing.
* html/track/LoadableTextTrack.h:
(LoadableTextTrack):
* html/track/TextTrack.h: Changed the access modifiers.
(TextTrack):
* html/track/TextTrackRegion.cpp:
(WebCore::TextTrackRegion::setRegionSettings): Entry point for
parsing the region settings from a string.
(WebCore):
(WebCore::TextTrackRegion::getSettingFromString): Maps a string
to a RegionSetting value.
(WebCore::TextTrackRegion::parseSettingValue): Parses the value
of a specific setting.
(WebCore::TextTrackRegion::parseSetting): Parses a setting string.
* html/track/TextTrackRegion.h:
* html/track/WebVTTParser.cpp:
(WebCore):
(WebCore::WebVTTParser::parseFloatPercentageValue): Helper method
to parse a float percentage value (e.g. "50.1%")
(WebCore::WebVTTParser::parseFloatPercentageValuePair): Helper method
to parse a float percentage value pair (e.g. "50.1%, 30.5%")
(WebCore::WebVTTParser::getNewRegions): Retrieves the new regions
available for processing.
(WebCore::WebVTTParser::parseBytes):
(WebCore::WebVTTParser::collectHeader): Generic function to collect
header in the metadata region.
(WebCore::WebVTTParser::createNewRegion): Creates new region using
the existing metadata header name and value.
* html/track/WebVTTParser.h:
(WebVTTParserClient):
(WebVTTParser):
* loader/TextTrackLoader.cpp:
(WebCore):
(WebCore::TextTrackLoader::newRegionsParsed): Called when the
regions have been succesfully parsed.
(WebCore::TextTrackLoader::getNewRegions): Gets the new regions.
* loader/TextTrackLoader.h:
(TextTrackLoaderClient): Added methods that need to be implemented.
(TextTrackLoader):
LayoutTests:
* media/track/captions-webvtt/header-regions.vtt: Added.
* media/track/regions-webvtt/text-track-region-parser-expected.txt: Added.
* media/track/regions-webvtt/text-track-region-parser.html: Added.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147325 268f45cc-cd09-0410-ab3c-d52691b4dbfc
15 files changed
