media/base/text_track.h

   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_