Pepper_56_C_interfaces
Pepper_56_C_interfaces
|
#include <pp_content_decryptor.h>
Public Attributes | |
struct PP_DecryptTrackingInfo | tracking_info |
uint32_t | data_size |
uint8_t | key_id [64] |
uint32_t | key_id_size |
uint8_t | iv [16] |
uint32_t | iv_size |
struct PP_DecryptSubsampleDescription | subsamples [32] |
uint32_t | num_subsamples |
The PP_EncryptedBlockInfo
struct contains all the information needed to decrypt an encrypted block.
uint32_t PP_EncryptedBlockInfo::data_size |
Size in bytes of data to be decrypted (data_offset included).
uint8_t PP_EncryptedBlockInfo::iv[16] |
Initialization vector of the block to be decrypted.
uint8_t PP_EncryptedBlockInfo::key_id[64] |
Key ID of the block to be decrypted.
For WebM the key ID can be as large as 2048 bytes in theory. But it's not used in current implementations. If we really need to support it, we should move key ID out as a separate parameter, e.g. as a PP_Var
, or make the whole PP_EncryptedBlockInfo
as a PP_Resource
.
struct PP_DecryptSubsampleDescription PP_EncryptedBlockInfo::subsamples[32] |
Subsample information of the block to be decrypted.
We need to have a fixed size of |subsamples| here. Choose 32 because it is sufficient for almost all real life scenarios. Note that in theory the number of subsamples could be larger than 32. If that happens, playback will fail.
struct PP_DecryptTrackingInfo PP_EncryptedBlockInfo::tracking_info |
Information needed by the client to track the block to be decrypted.