shaka::media::KeySource Class Reference

KeySource is responsible for encryption key acquisition. More...

#include <key_source.h>

Inheritance diagram for shaka::media::KeySource:

Public Member Functions
	KeySource (int protection_systems_flags, FourCC protection_scheme)
virtual Status	FetchKeys (EmeInitDataType init_data_type, const std::vector< uint8_t > &init_data)=0
virtual Status	GetKey (const std::string &stream_label, EncryptionKey *key)=0
virtual Status	GetKey (const std::vector< uint8_t > &key_id, EncryptionKey *key)=0
virtual Status	GetCryptoPeriodKey (uint32_t crypto_period_index, const std::string &stream_label, EncryptionKey *key)=0

Protected Member Functions
Status	UpdateProtectionSystemInfo (EncryptionKeyMap *encryption_key_map)

Detailed Description

KeySource is responsible for encryption key acquisition.

Definition at line 48 of file key_source.h.

Member Function Documentation

FetchKeys()

virtual Status shaka::media::KeySource::FetchKeys ( EmeInitDataType  init_data_type, const std::vector< uint8_t > &  init_data  )

pure virtual

Fetch keys based on the specified encrypted media init data.

Parameters

init_data_type	specifies the encrypted media init data type.
init_data	contains the init data.

Returns

OK on success, an error status otherwise.

Implemented in shaka::media::PlayReadyKeySource, shaka::media::WidevineKeySource, and shaka::media::RawKeySource.

GetCryptoPeriodKey()

virtual Status shaka::media::KeySource::GetCryptoPeriodKey ( uint32_t  crypto_period_index, const std::string &  stream_label, EncryptionKey *  key  )

pure virtual

Get encryption key of the specified track type at the specified index.

Parameters

crypto_period_index	is the sequence number of the key rotation period for which the key is being retrieved.
stream_label	is the label of stream for which retrieving the key.
key	is a pointer to the EncryptionKey which will hold the retrieved key. Owner retains ownership, and may not be NULL.

Returns

OK on success, an error status otherwise.

Implemented in shaka::media::PlayReadyKeySource, shaka::media::WidevineKeySource, and shaka::media::RawKeySource.

GetKey() [1/2]

virtual Status shaka::media::KeySource::GetKey ( const std::string &  stream_label, EncryptionKey *  key  )

pure virtual

Get encryption key of the specified stream label.

Parameters

stream_label	is the label of stream for which retrieving the key.
key	is a pointer to the EncryptionKey which will hold the retrieved key. Owner retains ownership, and may not be NULL.

Returns

OK on success, an error status otherwise.

Implemented in shaka::media::PlayReadyKeySource, shaka::media::WidevineKeySource, and shaka::media::RawKeySource.

GetKey() [2/2]

virtual Status shaka::media::KeySource::GetKey ( const std::vector< uint8_t > &  key_id, EncryptionKey *  key  )

pure virtual

Get the encryption key specified by the CENC key ID.

Parameters

key_id	is the unique identifier for the key being retreived.
key	is a pointer to the EncryptionKey which will hold the retrieved key. Owner retains ownership, and may not be NULL.

Returns

OK on success, or an error status otherwise.

Implemented in shaka::media::PlayReadyKeySource, shaka::media::WidevineKeySource, and shaka::media::RawKeySource.

UpdateProtectionSystemInfo()

Status shaka::media::KeySource::UpdateProtectionSystemInfo ( EncryptionKeyMap *  encryption_key_map )

protected

Update the protection sysmtem specific info for the encryption keys.

Parameters

encryption_key_map

is a map of encryption keys for all tracks.

Definition at line 39 of file key_source.cc.

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The documentation for this class was generated from the following files:

• packager/media/base/key_source.h
• packager/media/base/key_source.cc