Provides definitions that allow for DRM support, which are common between Player and Decoder interfaces.
An invalid SbDrmSystem.
A ticket for callback invocations initiated by the DRM system.
Encryption scheme of the input sample, as defined in ISO/IEC 23001 part 7.
kSbDrmEncryptionSchemeAesCtrkSbDrmEncryptionSchemeAesCbcStatus of a particular media key. https://w3c.github.io/encrypted-media/#idl-def-MediaKeyStatus
kSbDrmKeyStatusUsablekSbDrmKeyStatusExpiredkSbDrmKeyStatusReleasedkSbDrmKeyStatusRestrictedkSbDrmKeyStatusDownscaledkSbDrmKeyStatusPendingkSbDrmKeyStatusErrorThe type of the session request. https://www.w3.org/TR/encrypted-media/#idl-def-mediakeymessagetype
kSbDrmSessionRequestTypeLicenseRequestkSbDrmSessionRequestTypeLicenseRenewalkSbDrmSessionRequestTypeLicenseReleasekSbDrmSessionRequestTypeIndividualizationRequestThe status of session related operations. Used by SbDrmSessionUpdateRequestFunc, SbDrmSessionUpdatedFunc, and SbDrmServerCertificateUpdatedFunc to indicate the status of the operation. https://w3c.github.io/encrypted-media/#error-names
kSbDrmStatusSuccess
kSbDrmStatusTypeError
kSbDrmStatusNotSupportedError
kSbDrmStatusInvalidStateError
kSbDrmStatusQuotaExceededError
kSbDrmStatusUnknownError
The following error can be used when the error status cannot be mapped to one of the above errors.
A callback to notify the caller of SbDrmUpdateServerCertificate() whether the update has been successfully updated or not.
typedef void(* SbDrmServerCertificateUpdatedFunc) (SbDrmSystem drm_system, void *context, int ticket, SbDrmStatus status, const char *error_message)
A callback for signalling that a session has been closed by the SbDrmSystem
typedef void(* SbDrmSessionClosedFunc) (SbDrmSystem drm_system, void *context, const void *session_id, int session_id_size)
A callback for notifications that the status of one or more keys in a session has been changed. All keys of the session and their new status will be passed along. Any keys not in the list is considered as deleted.
typedef void(* SbDrmSessionKeyStatusesChangedFunc) (SbDrmSystem drm_system, void *context, const void *session_id, int session_id_size, int number_of_keys, const SbDrmKeyId *key_ids, const SbDrmKeyStatus *key_statuses)
A callback that will receive generated session update request when requested from a SbDrmSystem. drm_system will be the DRM system that SbDrmGenerateSessionUpdateRequest() was called on. context will be the same context that was passed into the call to SbDrmCreateSystem().
status is the status of the session request.
type is the status of the session request.
error_message may contain an optional error message when status isn't kSbDrmStatusSuccess to provide more details about the error. It may be NULL if status is kSbDrmStatusSuccess or if no error message can be provided. ticket will be the same ticket that was passed to SbDrmGenerateSessionUpdateRequest() or kSbDrmTicketInvalid if the update request was generated by the DRM system.
session_id cannot be NULL when ticket is kSbDrmTicketInvalid, even when there was an error generating the request. This allows Cobalt to find and reject the correct Promise corresponding to the associated SbDrmGenerateSessionUpdateRequest().
typedef void(* SbDrmSessionUpdateRequestFunc) (SbDrmSystem drm_system, void *context, int ticket, SbDrmStatus status, SbDrmSessionRequestType type, const char *error_message, const void *session_id, int session_id_size, const void *content, int content_size, const char *url)
A callback for notifications that a session has been added, and subsequent encrypted samples are actively ready to be decoded. drm_system will be the DRM system that SbDrmUpdateSession() was called on. context will be the same context passed into that call to SbDrmCreateSystem().
ticket will be the same ticket that was passed to SbDrmUpdateSession().
status is the status of the session request.
error_message may contain an optional error message when status isn't kSbDrmStatusSuccess to provide more details about the error. It may be NULL if status is kSbDrmStatusSuccess or if no error message can be provided. succeeded is whether the session was successfully updated or not.
typedef void(* SbDrmSessionUpdatedFunc) (SbDrmSystem drm_system, void *context, int ticket, SbDrmStatus status, const char *error_message, const void *session_id, int session_id_size)
A handle to a DRM system which can be used with either an SbDecoder or an SbPlayer.
typedef struct SbDrmSystemPrivate* SbDrmSystem
Encryption pattern of the input sample, as defined in ISO/IEC 23001 part 7.
uint32_t crypt_byte_blockuint32_t skip_byte_blockuint8_t identifier
The ID of the license (or key) required to decrypt this sample. For PlayReady, this is the license GUID in packed little-endian binary form.
int identifier_size
All the optional information needed per sample for encrypted samples.
SbDrmEncryptionScheme encryption_scheme
The encryption scheme of this sample.
SbDrmEncryptionPattern encryption_pattern
The encryption pattern of this sample.
uint8_t initialization_vector
The Initialization Vector needed to decrypt this sample.
int initialization_vector_size
uint8_t identifier
The ID of the license (or key) required to decrypt this sample. For PlayReady, this is the license GUID in packed little-endian binary form.
int identifier_size
int32_t subsample_count
The number of subsamples in this sample, must be at least 1.
constSbDrmSubSampleMapping* subsample_mapping
The clear/encrypted mapping of each subsample in this sample. This must be an array of subsample_count mappings.
A mapping of clear and encrypted bytes for a single subsample. All subsamples within a sample must be encrypted with the same encryption parameters. The clear bytes always appear first in the sample.
int32_t clear_byte_count
How many bytes of the corresponding subsample are not encrypted
int32_t encrypted_byte_count
How many bytes of the corresponding subsample are encrypted.
Clear any internal states/resources related to the specified session_id.
void SbDrmCloseSession(SbDrmSystem drm_system, const void *session_id, int session_id_size)
Destroys drm_system, which implicitly removes all keys installed in it and invalidates all outstanding session update requests. A DRM system cannot be destroyed unless any associated SbPlayer or SbDecoder has first been destroyed.
All callbacks are guaranteed to be finished when this function returns. As a result, if this function is called from a callback that is passed to SbDrmCreateSystem(), a deadlock will occur.
drm_system: The DRM system to be destroyed.
void SbDrmDestroySystem(SbDrmSystem drm_system)
Asynchronously generates a session update request payload for initialization_data, of initialization_data_size, in case sensitive type, extracted from the media stream, in drm_system's key system.
This function calls drm_system's update_request_callback function, which is defined when the DRM system is created by SbDrmCreateSystem. When calling that function, this function either sends context (also from SbDrmCreateSystem) and a populated request, or it sends NULL session_id if an error occurred.
drm_system's context may be used to route callbacks back to an object instance.
Callbacks may be called either from the current thread before this function returns or from another thread.
drm_system: The DRM system that defines the key system used for the session update request payload as well as the callback function that is called as a result of the function being called.
ticket: The opaque ID that allows to distinguish callbacks from multiple concurrent calls to SbDrmGenerateSessionUpdateRequest(), which will be passed to update_request_callback as-is. It is the responsibility of the caller to establish ticket uniqueness, issuing multiple requests with the same ticket may result in undefined behavior. The value kSbDrmTicketInvalid must not be used.
type: The case-sensitive type of the session update request payload. initialization_data: The data for which the session update request payload is created. initialization_data_size: The size of the session update request payload.
void SbDrmGenerateSessionUpdateRequest(SbDrmSystem drm_system, int ticket, const char *type, const void *initialization_data, int initialization_data_size)
Get the metrics of the underlying drm system.
When it is called on an implementation that supports drm system metrics, it should return a pointer containing the metrics as a blob, encoded using url safe base64 without padding and line wrapping, with the size of the encoded result in size on return. For example, on Android API level 28 or later, it should return the result of MediaDrm.getPropertyByteArray(“metrics”), encoded using url safe base64 without padding and line wrapping. On systems using Widevine CE CDM with oemcrypto 16 or later, it should return the metrics retrieved via Cdm::getMetrics(), encoded using url safe base64 without padding and line wrapping. The returned pointer should remain valid and its content should remain unmodified until the next time this function is called on the associated drm_system or the drm_system is destroyed.
When the metrics is empty on supported system, it should return a non-null pointer with size set to 0.
It should return NULL when there is no metrics support in the underlying drm system, or when the drm system implementation fails to retrieve the metrics.
The caller will never set size to NULL.
const void* SbDrmGetMetrics(SbDrmSystem drm_system, int *size)
Returns true if server certificate of drm_system can be updated via SbDrmUpdateServerCertificate(). The return value should remain the same during the life time of drm_system.
drm_system: The DRM system to check if its server certificate is updatable.
bool SbDrmIsServerCertificateUpdatable(SbDrmSystem drm_system)
Indicates whether drm_system is a valid SbDrmSystem.
static bool SbDrmSystemIsValid(SbDrmSystem drm)
Indicates whether ticket is a valid ticket.
static bool SbDrmTicketIsValid(int ticket)
Update the server certificate of drm_system. The function can be called multiple times. It is possible that a call to it happens before the callback of a previous call is called. Note that this function should only be called after SbDrmIsServerCertificateUpdatable is called first and returned true.
drm_system: The DRM system whose server certificate is being updated. ticket: The opaque ID that allows to distinguish callbacks from multiple concurrent calls to SbDrmUpdateServerCertificate(), which will be passed to server_certificate_updated_callback as-is. It is the responsibility of the caller to establish ticket uniqueness, issuing multiple requests with the same ticket may result in undefined behavior. The value kSbDrmTicketInvalid must not be used. certificate: Pointer to the server certificate data. certificate_size: Size of the server certificate data.
void SbDrmUpdateServerCertificate(SbDrmSystem drm_system, int ticket, const void *certificate, int certificate_size)
Update session with key, in drm_system's key system, from the license server response. Calls session_updated_callback with context and whether the update succeeded. context may be used to route callbacks back to an object instance.
ticket is the opaque ID that allows to distinguish callbacks from multiple concurrent calls to SbDrmUpdateSession(), which will be passed to session_updated_callback as-is. It is the responsibility of the caller to establish ticket uniqueness, issuing multiple calls with the same ticket may result in undefined behavior.
Once the session is successfully updated, an SbPlayer or SbDecoder associated with that DRM key system will be able to decrypt encrypted samples.
drm_system's session_updated_callback may called either from the current thread before this function returns or from another thread.
void SbDrmUpdateSession(SbDrmSystem drm_system, int ticket, const void *key, int key_size, const void *session_id, int session_id_size)