69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
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// Copyright 2016 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef MEDIA_BASE_FIXED_KEY_SOURCE_H_
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#define MEDIA_BASE_FIXED_KEY_SOURCE_H_
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#include <string>
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#include <vector>
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#include "packager/base/memory/scoped_ptr.h"
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#include "packager/media/base/key_source.h"
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namespace edash_packager {
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namespace media {
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/// A key source that uses fixed keys for encryption.
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class FixedKeySource : public KeySource {
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public:
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~FixedKeySource() override;
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/// @name KeySource implementation overrides.
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/// @{
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Status FetchKeys(const std::vector<uint8_t>& pssh_box) override;
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Status FetchKeys(const std::vector<std::vector<uint8_t>>& key_ids) override;
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Status FetchKeys(uint32_t asset_id) override;
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Status GetKey(TrackType track_type, EncryptionKey* key) override;
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Status GetKey(const std::vector<uint8_t>& key_id,
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EncryptionKey* key) override;
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Status GetCryptoPeriodKey(uint32_t crypto_period_index,
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TrackType track_type,
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EncryptionKey* key) override;
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/// @}
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/// Creates a new FixedKeySource from the given hex strings. Returns null
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/// if the strings are invalid.
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/// @param key_id_hex is the key id in hex string.
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/// @param key_hex is the key in hex string.
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/// @param pssh_boxes_hex is the pssh_boxes in hex string.
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/// @param iv_hex is the IV in hex string. If not specified, a randomly
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/// generated IV with the default length will be used.
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/// Note: GetKey on the created key source will always return the same key
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/// for all track types.
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static scoped_ptr<FixedKeySource> CreateFromHexStrings(
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const std::string& key_id_hex,
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const std::string& key_hex,
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const std::string& pssh_boxes_hex,
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const std::string& iv_hex);
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protected:
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// Allow default constructor for mock key sources.
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FixedKeySource();
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private:
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explicit FixedKeySource(scoped_ptr<EncryptionKey> key);
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scoped_ptr<EncryptionKey> encryption_key_;
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DISALLOW_COPY_AND_ASSIGN(FixedKeySource);
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};
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} // namespace media
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} // namespace edash_packager
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#endif // MEDIA_BASE_FIXED_KEY_SOURCE_H_
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