1 // Copyright (c) 2013 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_WEBM_WEBM_CRYPTO_HELPERS_H_ 6 #define MEDIA_WEBM_WEBM_CRYPTO_HELPERS_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "media/base/decoder_buffer.h" 11 12 namespace media { 13 14 // TODO(xhwang): Figure out the init data type appropriately once it's spec'ed. 15 // See https://www.w3.org/Bugs/Public/show_bug.cgi?id=19096 for more 16 // information. 17 const char kWebMEncryptInitDataType[] = "video/webm"; 18 19 // Returns an initialized DecryptConfig, which can be sent to the Decryptor if 20 // the stream has potentially encrypted frames. Every encrypted Block has a 21 // signal byte, and if the frame is encrypted, an initialization vector 22 // prepended to the frame. Leaving the IV empty will tell the decryptor that the 23 // frame is unencrypted. Returns NULL if |data| is invalid. Current encrypted 24 // WebM request for comments specification is here 25 // http://wiki.webmproject.org/encryption/webm-encryption-rfc 26 scoped_ptr<DecryptConfig> WebMCreateDecryptConfig( 27 const uint8* data, int data_size, 28 const uint8* key_id, int key_id_size); 29 30 } // namespace media 31 32 #endif // MEDIA_WEBM_WEBM_CRYPT_HELPERS_H_ 33
