Render inband text tracks in the media pipeline

media/base/text_track_config.h

+// Copyright (c) 2013 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.
+
+#ifndef MEDIA_BASE_TEXT_TRACK_CONFIG_H_
+#define MEDIA_BASE_TEXT_TRACK_CONFIG_H_
+
+#include <string>
+
+#include "media/base/media_export.h"
+
+namespace media {
+
+// Specifies the varieties of text tracks.
+enum TextKind {
+  kTextSubtitles,
+  kTextCaptions,
+  kTextDescriptions,
+  kTextMetadata,
+  kTextNone
+};
+
+class MEDIA_EXPORT TextTrackConfig {
+ public:
+  TextTrackConfig();
+  TextTrackConfig(TextKind kind,
+                  const std::string& label,
+                  const std::string& language);
+
+  // Returns true if all fields in |config| match this config.
+  bool Matches(const TextTrackConfig& config) const;
+
+  TextKind kind() const { return kind_; }
+  const std::string& label() const { return label_; }
+  const std::string& language() const { return language_; }
+
+ private:
+  TextKind kind_;
+  std::string label_;
+  std::string language_;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_TEXT_TRACK_H_