/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __DRM_MANAGER_CLIENT_H__
#define __DRM_MANAGER_CLIENT_H__
#include <utils/threads.h>
#include <binder/IInterface.h>
#include "drm_framework_common.h"
namespace android {
class DrmInfo;
class DrmRights;
class DrmMetadata;
class DrmInfoEvent;
class DrmInfoStatus;
class DrmInfoRequest;
class DrmSupportInfo;
class DrmConstraints;
class DrmConvertedStatus;
class DrmManagerClientImpl;
/**
* The Native application will instantiate this class and access DRM Framework
* services through this class.
*
*/
class DrmManagerClient {
public:
DrmManagerClient();
virtual ~DrmManagerClient();
public:
class OnInfoListener: virtual public RefBase {
public:
virtual ~OnInfoListener() {}
public:
virtual void onInfo(const DrmInfoEvent& event) = 0;
};
/**
* APIs which will be used by native modules (e.g. StageFright)
*
*/
public:
/**
* Open the decrypt session to decrypt the given protected content
*
* @param[in] fd File descriptor of the protected content to be decrypted
* @param[in] offset Start position of the content
* @param[in] length The length of the protected content
* @param[in] mime Mime type of the protected content if it is not NULL or empty
* @return
* Handle for the decryption session
*/
sp<DecryptHandle> openDecryptSession(int fd, off64_t offset, off64_t length, const char* mime);
/**
* Open the decrypt session to decrypt the given protected content
*
* @param[in] uri Path of the protected content to be decrypted
* @param[in] mime Mime type of the protected content if it is not NULL or empty
* @return
* Handle for the decryption session
*/
sp<DecryptHandle> openDecryptSession(const char* uri, const char* mime);
/**
* Close the decrypt session for the given handle
*
* @param[in] decryptHandle Handle for the decryption session
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t closeDecryptSession(sp<DecryptHandle> &decryptHandle);
/**
* Consumes the rights for a content.
* If the reserve parameter is true the rights is reserved until the same
* application calls this api again with the reserve parameter set to false.
*
* @param[in] decryptHandle Handle for the decryption session
* @param[in] action Action to perform. (Action::DEFAULT, Action::PLAY, etc)
* @param[in] reserve True if the rights should be reserved.
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure.
* In case license has been expired, DRM_ERROR_LICENSE_EXPIRED will be returned.
*/
status_t consumeRights(sp<DecryptHandle> &decryptHandle, int action, bool reserve);
/**
* Informs the DRM engine about the playback actions performed on the DRM files.
*
* @param[in] decryptHandle Handle for the decryption session
* @param[in] playbackStatus Playback action (Playback::START, Playback::STOP, Playback::PAUSE)
* @param[in] position Position in the file (in milliseconds) where the start occurs.
* Only valid together with Playback::START.
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t setPlaybackStatus(
sp<DecryptHandle> &decryptHandle, int playbackStatus, int64_t position);
/**
* Initialize decryption for the given unit of the protected content
*
* @param[in] decryptHandle Handle for the decryption session
* @param[in] decryptUnitId ID which specifies decryption unit, such as track ID
* @param[in] headerInfo Information for initializing decryption of this decrypUnit
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t initializeDecryptUnit(
sp<DecryptHandle> &decryptHandle, int decryptUnitId, const DrmBuffer* headerInfo);
/**
* Decrypt the protected content buffers for the given unit
* This method will be called any number of times, based on number of
* encrypted streams received from application.
*
* @param[in] decryptHandle Handle for the decryption session
* @param[in] decryptUnitId ID which specifies decryption unit, such as track ID
* @param[in] encBuffer Encrypted data block
* @param[out] decBuffer Decrypted data block
* @param[in] IV Optional buffer
* @return status_t
* Returns the error code for this API
* DRM_NO_ERROR for success, and one of DRM_ERROR_UNKNOWN, DRM_ERROR_LICENSE_EXPIRED
* DRM_ERROR_SESSION_NOT_OPENED, DRM_ERROR_DECRYPT_UNIT_NOT_INITIALIZED,
* DRM_ERROR_DECRYPT for failure.
*/
status_t decrypt(
sp<DecryptHandle> &decryptHandle, int decryptUnitId,
const DrmBuffer* encBuffer, DrmBuffer** decBuffer, DrmBuffer* IV = NULL);
/**
* Finalize decryption for the given unit of the protected content
*
* @param[in] decryptHandle Handle for the decryption session
* @param[in] decryptUnitId ID which specifies decryption unit, such as track ID
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t finalizeDecryptUnit(
sp<DecryptHandle> &decryptHandle, int decryptUnitId);
/**
* Reads the specified number of bytes from an open DRM file.
*
* @param[in] decryptHandle Handle for the decryption session
* @param[out] buffer Reference to the buffer that should receive the read data.
* @param[in] numBytes Number of bytes to read.
* @param[in] offset Offset with which to update the file position.
*
* @return Number of bytes read. Returns -1 for Failure.
*/
ssize_t pread(sp<DecryptHandle> &decryptHandle,
void* buffer, ssize_t numBytes, off64_t offset);
/**
* Validates whether an action on the DRM content is allowed or not.
*
* @param[in] path Path of the protected content
* @param[in] action Action to validate. (Action::DEFAULT, Action::PLAY, etc)
* @param[in] description Detailed description of the action
* @return true if the action is allowed.
*/
bool validateAction(const String8& path, int action, const ActionDescription& description);
/**
* APIs which are just the underlying implementation for the Java API
*
*/
public:
/**
* Register a callback to be invoked when the caller required to
* receive necessary information
*
* @param[in] infoListener Listener
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t setOnInfoListener(const sp<DrmManagerClient::OnInfoListener>& infoListener);
/**
* Get constraint information associated with input content
*
* @param[in] path Path of the protected content
* @param[in] action Actions defined such as,
* Action::DEFAULT, Action::PLAY, etc
* @return DrmConstraints
* key-value pairs of constraint are embedded in it
* @note
* In case of error, return NULL
*/
DrmConstraints* getConstraints(const String8* path, const int action);
/**
* Get metadata information associated with input content
*
* @param[in] path Path of the protected content
* @return DrmMetadata
* key-value pairs of metadata
* @note
* In case of error, return NULL
*/
DrmMetadata* getMetadata(const String8* path);
/**
* Check whether the given mimetype or path can be handled
*
* @param[in] path Path of the content needs to be handled
* @param[in] mimetype Mimetype of the content needs to be handled
* @return
* True if DrmManager can handle given path or mime type.
*/
bool canHandle(const String8& path, const String8& mimeType);
/**
* Executes given drm information based on its type
*
* @param[in] drmInfo Information needs to be processed
* @return DrmInfoStatus
* instance as a result of processing given input
*/
DrmInfoStatus* processDrmInfo(const DrmInfo* drmInfo);
/**
* Retrieves necessary information for registration, unregistration or rights
* acquisition information.
*
* @param[in] drmInfoRequest Request information to retrieve drmInfo
* @return DrmInfo
* instance as a result of processing given input
*/
DrmInfo* acquireDrmInfo(const DrmInfoRequest* drmInfoRequest);
/**
* Save DRM rights to specified rights path
* and make association with content path
*
* @param[in] drmRights DrmRights to be saved
* @param[in] rightsPath File path where rights to be saved
* @param[in] contentPath File path where content was saved
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t saveRights(
const DrmRights& drmRights, const String8& rightsPath, const String8& contentPath);
/**
* Retrieves the mime type embedded inside the original content
*
* @param[in] path the path of the protected content
* @return String8
* Returns mime-type of the original content, such as "video/mpeg"
*/
String8 getOriginalMimeType(const String8& path);
/**
* Retrieves the type of the protected object (content, rights, etc..)
* by using specified path or mimetype. At least one parameter should be non null
* to retrieve DRM object type
*
* @param[in] path Path of the content or null.
* @param[in] mimeType Mime type of the content or null.
* @return type of the DRM content,
* such as DrmObjectType::CONTENT, DrmObjectType::RIGHTS_OBJECT
*/
int getDrmObjectType(const String8& path, const String8& mimeType);
/**
* Check whether the given content has valid rights or not
*
* @param[in] path Path of the protected content
* @param[in] action Action to perform
* @return the status of the rights for the protected content,
* such as RightsStatus::RIGHTS_VALID, RightsStatus::RIGHTS_EXPIRED, etc.
*/
int checkRightsStatus(const String8& path, int action);
/**
* Removes the rights associated with the given protected content
*
* @param[in] path Path of the protected content
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t removeRights(const String8& path);
/**
* Removes all the rights information of each plug-in associated with
* DRM framework. Will be used in master reset
*
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t removeAllRights();
/**
* This API is for Forward Lock DRM.
* Each time the application tries to download a new DRM file
* which needs to be converted, then the application has to
* begin with calling this API.
*
* @param[in] convertId Handle for the convert session
* @param[in] mimeType Description/MIME type of the input data packet
* @return Return handle for the convert session
*/
int openConvertSession(const String8& mimeType);
/**
* Passes the input data which need to be converted. The resultant
* converted data and the status is returned in the DrmConvertedInfo
* object. This method will be called each time there are new block
* of data received by the application.
*
* @param[in] convertId Handle for the convert session
* @param[in] inputData Input Data which need to be converted
* @return Return object contains the status of the data conversion,
* the output converted data and offset. In this case the
* application will ignore the offset information.
*/
DrmConvertedStatus* convertData(int convertId, const DrmBuffer* inputData);
/**
* When there is no more data which need to be converted or when an
* error occurs that time the application has to inform the Drm agent
* via this API. Upon successful conversion of the complete data,
* the agent will inform that where the header and body signature
* should be added. This signature appending is needed to integrity
* protect the converted file.
*
* @param[in] convertId Handle for the convert session
* @return Return object contains the status of the data conversion,
* the header and body signature data. It also informs
* the application on which offset these signature data
* should be appended.
*/
DrmConvertedStatus* closeConvertSession(int convertId);
/**
* Retrieves all DrmSupportInfo instance that native DRM framework can handle.
* This interface is meant to be used by JNI layer
*
* @param[out] length Number of elements in drmSupportInfoArray
* @param[out] drmSupportInfoArray Array contains all DrmSupportInfo
* that native DRM framework can handle
* @return status_t
* Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure
*/
status_t getAllSupportInfo(int* length, DrmSupportInfo** drmSupportInfoArray);
private:
int mUniqueId;
sp<DrmManagerClientImpl> mDrmManagerClientImpl;
};
};
#endif /* __DRM_MANAGER_CLIENT_H__ */