/* * 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 #include #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 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 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); /** * 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, 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, 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, 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, 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, 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, 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& 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 mDrmManagerClientImpl; }; }; #endif /* __DRM_MANAGER_CLIENT_H__ */