// Copyright 2015 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_CDM_CENC_UTILS_H_ #define MEDIA_CDM_CENC_UTILS_H_ #include #include #include "media/base/media_export.h" #include "media/cdm/json_web_key.h" namespace media { // Validate that |input| is a set of concatenated 'pssh' boxes and the sizes // match. Returns true if |input| looks valid, false otherwise. MEDIA_EXPORT bool ValidatePsshInput(const std::vector& input); // Gets the Key Ids from the first 'pssh' box for the Common System ID among one // or more concatenated 'pssh' boxes. Returns true if a matching box is found // and it contains 1 or more key IDs. Returns false otherwise. // Notes: // 1. If multiple PSSH boxes are found, the "KIDs" of the first matching 'pssh' // box will be set in |key_ids|. // 2. Only PSSH boxes are allowed in |input|. Any other boxes in |pssh_boxes| // will result in false being returned. MEDIA_EXPORT bool GetKeyIdsForCommonSystemId( const std::vector& pssh_boxes, KeyIdList* key_ids); // Gets the data field from the first 'pssh' box containing |system_id|. // Returns true if such a box is found and successfully parsed. Returns false // otherwise. // Notes: // 1. If multiple PSSH boxes are found, the "Data" of the first matching 'pssh' // box will be set in |pssh_data|. // 2. Only PSSH boxes are allowed in |input|. Any other boxes in |pssh_boxes| // will result in false being returned. MEDIA_EXPORT bool GetPsshData(const std::vector& input, const std::vector& system_id, std::vector* pssh_data); } // namespace media #endif // MEDIA_CDM_CENC_UTILS_H_