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