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add VTT writer implementation

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This commit is contained in:
Luis Miguel Almánzar 2014-05-11 02:29:44 -04:00
parent 62ffe2c59d
commit 8f56b74d63
4 changed files with 151 additions and 2 deletions
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14
MediaBrowser.MediaEncoding/Subtitles/VttWriter.cs
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@ -9,8 +9,18 @@ namespace MediaBrowser.MediaEncoding.Subtitles
{ {
public class VttWriter : ISubtitleWriter public class VttWriter : ISubtitleWriter
{ {
public void Write(SubtitleTrackInfo info, Stream stream) public void Write(SubtitleTrackInfo info, Stream stream) {
{ using (var writer = new StreamWriter(stream))
{
writer.WriteLine("WEBVTT");
writer.WriteLine(string.Empty);
foreach (var trackEvent in info.TrackEvents)
{
writer.WriteLine(@"{0:hh\:mm\:ss\.fff} --> {1:hh\:mm\:ss\.fff}", TimeSpan.FromTicks(trackEvent.StartPositionTicks), TimeSpan.FromTicks(trackEvent.EndPositionTicks));
writer.WriteLine(trackEvent.Text);
writer.WriteLine(string.Empty);
}
}
} }
} }
} }

4
MediaBrowser.Tests/MediaBrowser.Tests.csproj
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@ -52,6 +52,7 @@
<ItemGroup> <ItemGroup>
<Compile Include="MediaEncoding\Subtitles\SsaParserTests.cs" /> <Compile Include="MediaEncoding\Subtitles\SsaParserTests.cs" />
<Compile Include="MediaEncoding\Subtitles\SrtParserTests.cs" /> <Compile Include="MediaEncoding\Subtitles\SrtParserTests.cs" />
<Compile Include="MediaEncoding\Subtitles\VttWriterTest.cs" />
<Compile Include="Providers\MovieDbProviderTests.cs" /> <Compile Include="Providers\MovieDbProviderTests.cs" />
<Compile Include="Resolvers\MovieResolverTests.cs" /> <Compile Include="Resolvers\MovieResolverTests.cs" />
<Compile Include="Resolvers\TvUtilTests.cs" /> <Compile Include="Resolvers\TvUtilTests.cs" />
@ -84,6 +85,9 @@
<None Include="app.config" /> <None Include="app.config" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<None Include="MediaEncoding\Subtitles\TestSubtitles\expected.vtt">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None>
<None Include="MediaEncoding\Subtitles\TestSubtitles\data.ssa"> <None Include="MediaEncoding\Subtitles\TestSubtitles\data.ssa">
<CopyToOutputDirectory>Always</CopyToOutputDirectory> <CopyToOutputDirectory>Always</CopyToOutputDirectory>
</None> </None>

32
MediaBrowser.Tests/MediaEncoding/Subtitles/TestSubtitles/expected.vtt Normal file
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@ -0,0 +1,32 @@
WEBVTT
00:00:02.400 --> 00:00:05.200
[Background Music Playing]
00:00:15.712 --> 00:00:17.399
Oh my god, Watch out!<br />It's coming!!
00:00:25.712 --> 00:00:30.399
[Bird noises]
00:00:31.000 --> 00:00:31.999
This text is <font color="red">RED</font> and has not been positioned.
00:00:32.000 --> 00:00:32.999
This is a<br />new line, as is<br />this
00:00:33.000 --> 00:00:33.999
This contains nested <b>bold, <i>italic, <u>underline</u> and <s>strike-through</s></u></i></b> HTML tags
00:00:34.000 --> 00:00:34.999
Unclosed but <b>supported HTML tags are left in, SSA italics aren't
00:00:35.000 --> 00:00:35.999
&lt;ggg&gt;Unsupported&lt;/ggg&gt; HTML tags are escaped and left in, even if &lt;hhh&gt;not closed.
00:00:36.000 --> 00:00:36.999
Multiple SSA tags are stripped
00:00:37.000 --> 00:00:37.999
Greater than (&lt;) and less than (&gt;) are shown

103
MediaBrowser.Tests/MediaEncoding/Subtitles/VttWriterTest.cs Normal file
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@ -0,0 +1,103 @@
using System.Collections.Generic;
using System.IO;
using MediaBrowser.MediaEncoding.Subtitles;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace MediaBrowser.Tests.MediaEncoding.Subtitles {
[TestClass]
public class VttWriterTest {
[TestMethod]
public void TestWrite() {
var infoSubs =
new SubtitleTrackInfo
{
TrackEvents = new List<SubtitleTrackEvent> {
new SubtitleTrackEvent {
Id = "1",
StartPositionTicks = 24000000,
EndPositionTicks = 52000000,
Text =
"[Background Music Playing]"
},
new SubtitleTrackEvent {
Id = "2",
StartPositionTicks = 157120000,
EndPositionTicks = 173990000,
Text =
"Oh my god, Watch out!<br />It's coming!!"
},
new SubtitleTrackEvent {
Id = "3",
StartPositionTicks = 257120000,
EndPositionTicks = 303990000,
Text = "[Bird noises]"
},
new SubtitleTrackEvent {
Id = "4",
StartPositionTicks = 310000000,
EndPositionTicks = 319990000,
Text =
"This text is <font color=\"red\">RED</font> and has not been positioned."
},
new SubtitleTrackEvent {
Id = "5",
StartPositionTicks = 320000000,
EndPositionTicks = 329990000,
Text =
"This is a<br />new line, as is<br />this"
},
new SubtitleTrackEvent {
Id = "6",
StartPositionTicks = 330000000,
EndPositionTicks = 339990000,
Text =
"This contains nested <b>bold, <i>italic, <u>underline</u> and <s>strike-through</s></u></i></b> HTML tags"
},
new SubtitleTrackEvent {
Id = "7",
StartPositionTicks = 340000000,
EndPositionTicks = 349990000,
Text =
"Unclosed but <b>supported HTML tags are left in, SSA italics aren't"
},
new SubtitleTrackEvent {
Id = "8",
StartPositionTicks = 350000000,
EndPositionTicks = 359990000,
Text =
"&lt;ggg&gt;Unsupported&lt;/ggg&gt; HTML tags are escaped and left in, even if &lt;hhh&gt;not closed."
},
new SubtitleTrackEvent {
Id = "9",
StartPositionTicks = 360000000,
EndPositionTicks = 369990000,
Text =
"Multiple SSA tags are stripped"
},
new SubtitleTrackEvent {
Id = "10",
StartPositionTicks = 370000000,
EndPositionTicks = 379990000,
Text =
"Greater than (&lt;) and less than (&gt;) are shown"
}
}
};
var sut = new VttWriter();
if(File.Exists("testVTT.vtt"))
File.Delete("testVTT.vtt");
using (var file = File.OpenWrite("testVTT.vtt"))
{
sut.Write(infoSubs,file);
}
var result = File.ReadAllText("testVTT.vtt");
var expectedText = File.ReadAllText(@"MediaEncoding\Subtitles\TestSubtitles\expected.vtt");
Assert.AreEqual(expectedText, result);
}
}
}