48 lines
1.2 KiB
C#
48 lines
1.2 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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//-----------------------------------------------------------------------------
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// Copyright 2015-2021 RenderHeads Ltd. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace RenderHeads.Media.AVProVideo
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{
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public class TextCue
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{
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private TextCue() { }
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internal TextCue(string text)
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{
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Text = text;
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}
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public string Text { get; private set; }
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}
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public partial class BaseMediaPlayer : ITextTracks
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{
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protected TextCue _currentTextCue = null;
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public TextCue GetCurrentTextCue() { return _currentTextCue; } // Returns null when there is no active text
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protected bool UpdateTextCue(bool force = false)
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{
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bool result = false;
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// Has it changed since the last 'tick'
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if (force || InternalIsChangedTextCue())
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{
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_currentTextCue = null;
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string text = InternalGetCurrentTextCue();
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if (!string.IsNullOrEmpty(text))
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{
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_currentTextCue = new TextCue(text);
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}
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result = true;
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}
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return result;
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}
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internal abstract bool InternalIsChangedTextCue();
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internal abstract string InternalGetCurrentTextCue();
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}
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}
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