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
  13 namespace media {
  14
  15 // Validate that |input| is a set of concatenated 'pssh' boxes and the sizes
  16 // match. Returns true if |input| looks valid, false otherwise.
  17 MEDIA_EXPORT bool ValidatePsshInput(const uint8* input, size_t input_length);
  18
  19 // Gets the Key Ids from a 'pssh' box for the Common SystemID among one or
  20 // more concatenated 'pssh' boxes. If |input| looks valid, then true is
  21 // returned and |key_ids| is updated to contain the values found. Otherwise
  22 // return false.
  23 // TODO(jrummell): This returns true if no Common SystemID 'pssh' boxes are
  24 // found, or are included but don't contain any key IDs. This should be
  25 // fixed once the test files are updated to include correct 'pssh' boxes.
  26 // http://crbug.com/460308
  27 MEDIA_EXPORT bool GetKeyIdsForCommonSystemId(
  28     const uint8* input,
  29     int input_length,
  30     std::vector<std::vector<uint8>>* key_ids);
  31
  32 }  // namespace media
  33
  34 #endif  // MEDIA_CDM_CENC_UTILS_H_