| // Copyright (c) 2013 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_WEBM_WEBM_CRYPTO_HELPERS_H_ |
| #define MEDIA_WEBM_WEBM_CRYPTO_HELPERS_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "media/base/decoder_buffer.h" |
| |
| namespace media { |
| |
| // TODO(xhwang): Figure out the init data type appropriately once it's spec'ed. |
| // See https://www.w3.org/Bugs/Public/show_bug.cgi?id=19096 for more |
| // information. |
| const char kWebMEncryptInitDataType[] = "video/webm"; |
| |
| // Returns an initialized DecryptConfig, which can be sent to the Decryptor if |
| // the stream has potentially encrypted frames. Every encrypted Block has a |
| // signal byte, and if the frame is encrypted, an initialization vector |
| // prepended to the frame. Leaving the IV empty will tell the decryptor that the |
| // frame is unencrypted. Returns NULL if |data| is invalid. Current encrypted |
| // WebM request for comments specification is here |
| // http://wiki.webmproject.org/encryption/webm-encryption-rfc |
| scoped_ptr<DecryptConfig> WebMCreateDecryptConfig( |
| const uint8* data, int data_size, |
| const uint8* key_id, int key_id_size); |
| |
| } // namespace media |
| |
| #endif // MEDIA_WEBM_WEBM_CRYPT_HELPERS_H_ |
