Home | History | Annotate | Download | only in base 
      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef MEDIA_BASE_TEXT_TRACK_H_
      6 #define MEDIA_BASE_TEXT_TRACK_H_
      7 
      8 #include <string>
      9 
     10 #include "base/callback.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/time/time.h"
     13 
     14 namespace media {
     15 
     16 // Specifies the varieties of text tracks.
     17 enum TextKind {
     18   kTextSubtitles,
     19   kTextCaptions,
     20   kTextDescriptions,
     21   kTextMetadata,
     22   kTextNone
     23 };
     24 
     25 class TextTrack {
     26  public:
     27   virtual ~TextTrack() {}
     28   virtual void addWebVTTCue(const base::TimeDelta& start,
     29                             const base::TimeDelta& end,
     30                             const std::string& id,
     31                             const std::string& content,
     32                             const std::string& settings) = 0;
     33 };
     34 
     35 typedef base::Callback<scoped_ptr<TextTrack>
     36     (TextKind kind,
     37      const std::string& label,
     38      const std::string& language)> AddTextTrackCB;
     39 
     40 }  // namespace media
     41 
     42 #endif  // MEDIA_BASE_TEXT_TRACK_H_
     43