media/cdm/cenc_utils.h

   1 // Copyright 2015 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_CDM_CENC_UTILS_H_
   6 #define MEDIA_CDM_CENC_UTILS_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "media/base/media_export.h"
  12 #include "media/cdm/json_web_key.h"
  13
  14 namespace media {
  15
  16 // Validate that |input| is a set of concatenated 'pssh' boxes and the sizes
  17 // match. Returns true if |input| looks valid, false otherwise.
  18 MEDIA_EXPORT bool ValidatePsshInput(const std::vector<uint8_t>& input);
  19
  20 // Gets the Key Ids from a 'pssh' box for the Common SystemID among one or
  21 // more concatenated 'pssh' boxes. If |input| looks valid, then true is
  22 // returned and |key_ids| is updated to contain the values found. Otherwise
  23 // return false.
  24 // TODO(jrummell): This returns true if no Common SystemID 'pssh' boxes are
  25 // found, or are included but don't contain any key IDs. This should be
  26 // fixed once the test files are updated to include correct 'pssh' boxes.
  27 // http://crbug.com/460308
  28 MEDIA_EXPORT bool GetKeyIdsForCommonSystemId(const std::vector<uint8_t>& input,
  29                                              KeyIdList* key_ids);
  30
  31 }  // namespace media
  32
  33 #endif  // MEDIA_CDM_CENC_UTILS_H_