Motown in-proc streaming framework used to implement media services.

services/media/framework/metadata.h

+// Copyright 2016 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 SERVICES_MEDIA_FRAMEWORK_METADATA_H_
+#define SERVICES_MEDIA_FRAMEWORK_METADATA_H_
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+#include "services/media/framework/ptr.h"
+
+namespace mojo {
+namespace media {
+
+class Metadata;
+
+// TODO(dalesat): Get rid of typedefs like these.
+typedef UniquePtr<Metadata> MetadataPtr;
+
+// Container for content metadata.
+// TODO(dalesat): Probably needs to be extensible. Consider using map-like.
+class Metadata {
+ public:
+  // TODO(dalesat): Rename methods like this 'Create'.
+  static MetadataPtr Create(
+      uint64_t duration_ns,
+      const std::string& title,
+      const std::string& artist,
+      const std::string& album,
+      const std::string& publisher,
+      const std::string& genre,
+      const std::string& composer);
+
+  ~Metadata();
+
+  uint64_t duration_ns() const { return duration_ns_; }
+
+  const std::string& title() const { return title_; }
+
+  const std::string& artist() const { return artist_; }
+
+  const std::string& album() const { return album_; }
+
+  const std::string& publisher() const { return publisher_; }
+
+  const std::string& genre() const { return genre_; }
+
+  const std::string& composer() const { return composer_; }
+
+  MetadataPtr Clone() const {
+    return Create(
+        duration_ns_,
+        title_,
+        artist_,
+        album_,
+        publisher_,
+        genre_,
+        composer_);
+  }
+
+ private:
+  Metadata(
+      uint64_t duration_ns,
+      const std::string& title,
+      const std::string& artist,
+      const std::string& album,
+      const std::string& publisher,
+      const std::string& genre,
+      const std::string& composer);
+
+  uint64_t duration_ns_;
+  std::string title_;
+  std::string artist_;
+  std::string album_;
+  std::string publisher_;
+  std::string genre_;
+  std::string composer_;
+
+  DISALLOW_COPY_AND_ASSIGN(Metadata);
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif // SERVICES_MEDIA_FRAMEWORK_METADATA_H_