[Media Gallery] Added code to support mtp device media file system on Windows.

chrome/browser/media_gallery/win/mtp_device_object_entry.h

+// Copyright (c) 2012 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.
+//
+// This class manages all the information about the media transfer protocol
+// device object entry. To support media file system operations, this
+// class is created, destroyed and operated on the blocking thread.
+//
+// EXAMPLE:
+// class MTPDeviceObjectParser {
+//  public:
+//   MTPDeviceObjectParser() { }
+//
+//   void GetObjectNameAndSize() {
+//     MTPDeviceObjectEntry entry;
+//     bool res = MediaDeviceOperationsUtil::GetMTPDeviceObjectEntry(device,
+//                                                                   object_id_,
+//                                                                   &entry);
+//     string16 name = entry.file_name();
+//     int16 size = entry.size();
+//   }
+//
+//   private:
+//    base::win::scoped_comptr<IPortableDevice*> device_;
+//    const string object_id_;
+// };
+
+#ifndef CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
+#define CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
+
+#include <vector>
+
+#include "base/string16.h"
+#include "base/time.h"
+
+namespace chrome {
+
+class MTPDeviceObjectEntry;
+typedef std::vector<MTPDeviceObjectEntry> MTPDeviceObjectEntries;
+
+// See comment at top of file for a complete class description.
+class MTPDeviceObjectEntry {
+ public:
+  MTPDeviceObjectEntry();
+  MTPDeviceObjectEntry(const string16& object_id,
+                       const string16& object_name,
+                       bool is_directory,
+                       int64 size,
+                       const base::Time& last_modified_time);
+
+  virtual ~MTPDeviceObjectEntry();

[Lei Zhang, 2012/11/01 02:34:57]

Does not need to be virtual.

[kmadhusu, 2012/11/01 17:59:00]

Done.

+
+  // Accessor functions to get object details.
+  string16 object_id() const { return object_id_; }
+  string16 file_name() const { return name_; }
+  bool is_directory() const { return is_directory_; }
+  int64 size() const { return size_; }
+  base::Time last_modified_time() const { return last_modified_time_; }
+
+ private:
+  // The object identifier, e.g. "o299".
+  string16 object_id_;
+
+  // Friendly name of the object, e.g. "IMG_9911.jpeg".
+  string16 name_;
+
+  // True, if the current object is a directory/folder/album content type.
+  bool is_directory_;
+
+  // The object file size in bytes, e.g. "882992".
+  int64 size_;
+
+  // Last modified time of the object.
+  base::Time last_modified_time_;
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_