35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
// Copyright 2014 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 PACKAGER_MEDIA_FORMATS_WEBM_WEBM_CRYPTO_HELPERS_H_
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#define PACKAGER_MEDIA_FORMATS_WEBM_WEBM_CRYPTO_HELPERS_H_
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#include <cstdint>
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#include <memory>
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#include <packager/media/base/decrypt_config.h>
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namespace shaka {
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namespace media {
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/// Fills an initialized DecryptConfig, which can be sent to the Decryptor if
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/// the stream has potentially encrypted frames. Also sets |data_offset| which
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/// indicates where the encrypted data starts. Leaving the IV empty will tell
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/// the decryptor that the frame is unencrypted.
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/// Current encrypted WebM request for comments specification is here
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/// http://wiki.webmproject.org/encryption/webm-encryption-rfc
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/// @return true if |data| is valid, false otherwise, in which case
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/// |decrypt_config| and |data_offset| will not be changed.
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bool WebMCreateDecryptConfig(const uint8_t* data,
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int data_size,
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const uint8_t* key_id,
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size_t key_id_size,
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std::unique_ptr<DecryptConfig>* decrypt_config,
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int* data_offset);
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} // namespace media
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} // namespace shaka
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#endif // PACKAGER_MEDIA_FORMATS_WEBM_WEBM_CRYPT_HELPERS_H_
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