This repository was archived by the owner on Feb 22, 2023. It is now read-only.
[video_player] VTT Support #2878
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| WEBVTT - This file has cues. | ||
|
|
||
| 14 | ||
| 00:00:01.815 --> 00:00:02.114 | ||
| - What? | ||
| - Where are we now? | ||
|
|
||
| 15 | ||
| 00:01:18.171 --> 00:01:20.991 | ||
| - This is big bat country. | ||
|
|
||
| 16 | ||
| 00:01:21.058 --> 00:01:23.868 | ||
| - [ Bats Screeching ] | ||
| - They won't get in your hair. They're after the bugs. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| # | ||
| # NOTE: This podspec is NOT to be published. It is only used as a local source! | ||
| # | ||
|
|
||
| Pod::Spec.new do |s| | ||
| s.name = 'Flutter' | ||
| s.version = '1.0.0' | ||
| s.summary = 'High-performance, high-fidelity mobile apps.' | ||
| s.description = <<-DESC | ||
| Flutter provides an easy and productive way to build and deploy high-performance mobile apps for Android and iOS. | ||
| DESC | ||
| s.homepage = 'https://flutter.io' | ||
| s.license = { :type => 'MIT' } | ||
| s.author = { 'Flutter Dev Team' => '[email protected]' } | ||
| s.source = { :git => 'https://github.com/flutter/engine', :tag => s.version.to_s } | ||
| s.ios.deployment_target = '8.0' | ||
| s.vendored_frameworks = 'Flutter.framework' | ||
| end | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| // Copyright 2020 The Chromium Authors. All rights reserved. | ||
|
||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
|
|
||
| import 'dart:convert'; | ||
cyanglaz marked this conversation as resolved.
Show resolved
Hide resolved
|
||
|
|
||
| import 'closed_caption_file.dart'; | ||
| import 'package:html/parser.dart'; | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
|
|
||
| /// Represents a [ClosedCaptionFile], parsed from the WebVTT file format. | ||
| /// See: https://en.wikipedia.org/wiki/WebVTT | ||
| class WebVTTCaptionFile extends ClosedCaptionFile { | ||
ferrazrx marked this conversation as resolved.
Show resolved
Hide resolved
|
||
| /// Parses a string into a [ClosedCaptionFile], assuming [fileContents] is in | ||
| /// the WebVTT file format. | ||
| /// * See: https://en.wikipedia.org/wiki/WebVTT | ||
| WebVTTCaptionFile(this.fileContents) | ||
| : _captions = _parseCaptionsFromWebVTTString(fileContents); | ||
|
|
||
| /// The entire body of the VTT file. | ||
| final String fileContents; | ||
|
||
|
|
||
| @override | ||
| List<Caption> get captions => _captions; | ||
|
|
||
| final List<Caption> _captions; | ||
| } | ||
|
|
||
| List<Caption> _parseCaptionsFromWebVTTString(String file) { | ||
| final List<Caption> captions = <Caption>[]; | ||
| int number = 1; | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
| for (List<String> captionLines in _readWebVTTFile(file)) { | ||
| if (captionLines.length < 2) continue; | ||
cyanglaz marked this conversation as resolved.
Show resolved
Hide resolved
|
||
|
|
||
| // Caption has header | ||
| bool hasHeader = captionLines.length > 2; | ||
| if (hasHeader) { | ||
| number = int.parse(captionLines[0]); | ||
| } | ||
|
|
||
| final int captionNumber = number; | ||
| final _StartAndEnd startAndEnd = _StartAndEnd.fromWebVTTString( | ||
| hasHeader ? captionLines[1] : captionLines[0]); | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
|
|
||
| final String text = captionLines.sublist(hasHeader ? 2 : 1).join('\n'); | ||
|
|
||
| //TODO: Handle text format | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
| final String textWithoutFormat = _parseHtmlString(text); | ||
|
|
||
| final Caption newCaption = Caption( | ||
| number: captionNumber, | ||
| start: startAndEnd.start, | ||
| end: startAndEnd.end, | ||
| text: textWithoutFormat, | ||
| ); | ||
|
|
||
| if (newCaption.start != null && newCaption.end != null) { | ||
| captions.add(newCaption); | ||
| number++; | ||
| } | ||
| } | ||
|
|
||
| return captions; | ||
| } | ||
|
|
||
| class _StartAndEnd { | ||
|
||
| final Duration start; | ||
| final Duration end; | ||
|
|
||
| _StartAndEnd(this.start, this.end); | ||
|
|
||
| // Assumes format from an VTT file. | ||
| // For example: | ||
| // 00:09.000 --> 00:11.000 | ||
| static _StartAndEnd fromWebVTTString(String line) { | ||
| final RegExp format = | ||
| RegExp(_webVTTTimeStamp + _webVTTArrow + _webVTTTimeStamp); | ||
|
|
||
| if (!format.hasMatch(line)) { | ||
| return _StartAndEnd(null, null); | ||
| } | ||
|
|
||
| final List<String> times = line.split(_webVTTArrow); | ||
|
|
||
| final Duration start = _parseWebVTTTimestamp(times[0]); | ||
| final Duration end = _parseWebVTTTimestamp(times[1]); | ||
|
|
||
| return _StartAndEnd(start, end); | ||
| } | ||
| } | ||
|
|
||
| String _parseHtmlString(String htmlString) { | ||
|
||
| var document = parse(htmlString); | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
| String parsedString = parse(document.body.text).documentElement.text; | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
| return parsedString; | ||
| } | ||
|
|
||
| // Parses a time stamp in an VTT file into a Duration. | ||
| // For example: | ||
| // | ||
| // _parseWebVTTimestamp('00:01:08.430') | ||
| // returns | ||
| // Duration(hours: 0, minutes: 1, seconds: 8, milliseconds: 430) | ||
cyanglaz marked this conversation as resolved.
Show resolved
Hide resolved
|
||
| Duration _parseWebVTTTimestamp(String timestampString) { | ||
| if (!RegExp(_webVTTTimeStamp).hasMatch(timestampString)) { | ||
| return null; | ||
| } | ||
|
|
||
| final List<String> dotSections = timestampString.split('.'); | ||
| final List<String> hoursMinutesSeconds = dotSections[0].split(':'); | ||
|
||
|
|
||
| int hours = 0; | ||
| int minutes = 0; | ||
| int seconds = 0; | ||
| List<String> styles; | ||
|
|
||
| if (hoursMinutesSeconds.length > 2) { | ||
ferrazrx marked this conversation as resolved.
Outdated
Show resolved
Hide resolved
|
||
| // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds] | ||
| hours = int.parse(hoursMinutesSeconds[0]); | ||
| minutes = int.parse(hoursMinutesSeconds[1]); | ||
| seconds = int.parse(hoursMinutesSeconds[2]); | ||
| } else if (int.parse(hoursMinutesSeconds[0]) > 59) { | ||
| // Timestamp takes the form of [hours]:[minutes].[milliseconds] | ||
|
||
| // First position is hours as it's over 59. | ||
| hours = int.parse(hoursMinutesSeconds[0]); | ||
| minutes = int.parse(hoursMinutesSeconds[1]); | ||
| } else { | ||
| // Timestamp takes the form of [minutes]:[seconds].[milliseconds] | ||
| minutes = int.parse(hoursMinutesSeconds[0]); | ||
| seconds = int.parse(hoursMinutesSeconds[1]); | ||
| } | ||
|
Contributor
There was a problem hiding this comment. Once the above is removed, this can all condense to: It would be good to add a safety check that the length is either 2 or 3 and returns null first, as well. |
||
|
|
||
| List<String> milisecondsStyles = dotSections[1].split(" "); | ||
| //TODO: Handle styles data on timestamp | ||
| if (milisecondsStyles.length > 1) { | ||
| styles = milisecondsStyles.sublist(1); | ||
| } | ||
| int milliseconds = int.parse(milisecondsStyles[0]); | ||
|
|
||
| return Duration( | ||
| hours: hours, | ||
| minutes: minutes, | ||
| seconds: seconds, | ||
| milliseconds: milliseconds, | ||
| ); | ||
| } | ||
|
|
||
| // Reads on VTT file and splits it into Lists of strings where each list is one | ||
| // caption. | ||
| List<List<String>> _readWebVTTFile(String file) { | ||
| final List<String> lines = LineSplitter.split(file).toList(); | ||
|
|
||
| final List<List<String>> captionStrings = <List<String>>[]; | ||
| List<String> currentCaption = <String>[]; | ||
| int lineIndex = 0; | ||
| for (final String line in lines) { | ||
| final bool isLineBlank = line.trim().isEmpty; | ||
| if (!isLineBlank) { | ||
| currentCaption.add(line); | ||
| } | ||
|
|
||
| if (isLineBlank || lineIndex == lines.length - 1) { | ||
| captionStrings.add(currentCaption); | ||
| currentCaption = <String>[]; | ||
| } | ||
|
|
||
| lineIndex += 1; | ||
| } | ||
|
|
||
| return captionStrings; | ||
| } | ||
|
|
||
| const String _webVTTTimeStamp = r'(\d+):(\d{2})(:\d{2})?\.(\d{3})'; | ||
| const String _webVTTArrow = r' --> '; | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Uh oh!
There was an error while loading. Please reload this page.