97 lines
3.9 KiB
C++
97 lines
3.9 KiB
C++
// Copyright 2017 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 PACKAGER_MEDIA_BASE_PLAYREADY_SOURCE_H_
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#define PACKAGER_MEDIA_BASE_PLAYREADY_SOURCE_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "packager/media/base/key_source.h"
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namespace shaka {
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namespace media {
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/// A key source that uses PlayReady for encryption.
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class PlayReadyKeySource : public KeySource {
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public:
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/// Creates a new PlayReadyKeySource from the given packaging information.
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/// @param server_url PlayReady packaging server url.
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/// @param protection_systems_flags is the flags indicating which PSSH should
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/// be included.
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/// @param protection_scheme is the Protection Scheme to be used for
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/// encryption. It needs to be signalled in Widevine PSSH. This
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/// argument can be ignored if Widevine PSSH is not generated.
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PlayReadyKeySource(const std::string& server_url,
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int protection_systems_flags,
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FourCC protection_scheme);
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/// Creates a new PlayReadyKeySource from the given packaging information.
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/// @param server_url PlayReady packaging server url.
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/// @param client_cert_file absolute path to a client certificate.
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/// @param client_cert_private_key_file absolute path to the private file
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/// for the client certificate.
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/// @param client_cert_private_key_password password for the private key.
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/// @param protection_systems_flags is the flags indicating which PSSH should
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/// be included.
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/// @param protection_scheme is the Protection Scheme to be used for
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/// encryption. It needs to be signalled in Widevine PSSH. This
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/// argument can be ignored if Widevine PSSH is not generated.
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PlayReadyKeySource(const std::string& server_url,
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const std::string& client_cert_file,
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const std::string& client_cert_private_key_file,
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const std::string& client_cert_private_key_password,
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int protection_systems_flags,
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FourCC protection_scheme);
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~PlayReadyKeySource() override;
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/// @name KeySource implementation overrides.
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/// @{
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Status FetchKeys(EmeInitDataType init_data_type,
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const std::vector<uint8_t>& init_data) override;
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Status GetKey(const std::string& stream_label, 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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const std::string& stream_label,
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EncryptionKey* key) override;
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/// @}
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virtual Status FetchKeysWithProgramIdentifier(const std::string& program_identifier);
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/// Creates a new PlayReadyKeySource from the given data.
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/// Returns null if the strings are invalid.
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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 std::unique_ptr<PlayReadyKeySource> CreateFromKeyAndKeyId(
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const std::vector<uint8_t>& key_id,
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const std::vector<uint8_t>& key);
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/// Sets the Certificate Authority file for validating self-signed certificates.
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void SetCaFile(const std::string& ca_file) {
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ca_file_ = ca_file;
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}
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private:
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Status GetKeyInternal();
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Status GetCryptoPeriodKeyInternal();
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// Indicates whether PlayReady protection system should be generated.
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bool generate_playready_protection_system_ = true;
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std::unique_ptr<EncryptionKey> encryption_key_;
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std::string server_url_;
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std::string ca_file_;
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std::string client_cert_file_;
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std::string client_cert_private_key_file_;
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std::string client_cert_private_key_password_;
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DISALLOW_COPY_AND_ASSIGN(PlayReadyKeySource);
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};
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} // namespace media
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} // namespace shaka
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#endif // PACKAGER_MEDIA_BASE_PLAYREADY_SOURCE_H_
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