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Diffstat (limited to 'drm/libdrmframework/include/DrmManagerClientImpl.h')
| -rw-r--r-- | drm/libdrmframework/include/DrmManagerClientImpl.h | 416 |
1 files changed, 416 insertions, 0 deletions
diff --git a/drm/libdrmframework/include/DrmManagerClientImpl.h b/drm/libdrmframework/include/DrmManagerClientImpl.h new file mode 100644 index 0000000..492c7f5 --- /dev/null +++ b/drm/libdrmframework/include/DrmManagerClientImpl.h @@ -0,0 +1,416 @@ +/* + * 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_IMPL_H__ +#define __DRM_MANAGER_CLIENT_IMPL_H__ + +#include <binder/IMemory.h> +#include <utils/threads.h> +#include <drm/DrmManagerClient.h> + +#include "IDrmManagerService.h" + +namespace android { + +class DrmInfoEvent; +/** + * This is implementation class for DrmManagerClient class. + * + * Only the JNI layer creates an instance of this class to delegate + * functionality to Native later. + * + */ +class DrmManagerClientImpl : public BnDrmServiceListener { +private: + DrmManagerClientImpl(); + +public: + static DrmManagerClientImpl* create(int* pUniqueId); + + static void remove(int uniqueId); + + virtual ~DrmManagerClientImpl(); + +public: + /** + * Initialize DRM Manager + * load available plug-ins from default plugInDirPath + * + * @param[in] uniqueId Unique identifier for a session + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t loadPlugIns(int uniqueId); + + /** + * Finalize DRM Manager + * release resources associated with each plug-in + * unload all plug-ins and etc. + * + * @param[in] uniqueId Unique identifier for a session + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t unloadPlugIns(int uniqueId); + + /** + * Register a callback to be invoked when the caller required to + * receive necessary information + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] infoListener Listener + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t setOnInfoListener( + int uniqueId, const sp<DrmManagerClient::OnInfoListener>& infoListener); + + /** + * Get constraint information associated with input content + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, const String8* path, const int action); + + /** + * Check whether the given mimetype or path can be handled + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, const String8& path, const String8& mimeType); + + /** + * Executes given drm information based on its type + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] drmInfo Information needs to be processed + * @return DrmInfoStatus + * instance as a result of processing given input + */ + DrmInfoStatus* processDrmInfo(int uniqueId, const DrmInfo* drmInfo); + + /** + * Retrieves necessary information for registration, unregistration or rights + * acquisition information. + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] drmInfoRequest Request information to retrieve drmInfo + * @return DrmInfo + * instance as a result of processing given input + */ + DrmInfo* acquireDrmInfo(int uniqueId, const DrmInfoRequest* drmInfoRequest); + + /** + * Save DRM rights to specified rights path + * and make association with content path + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, const DrmRights& drmRights, + const String8& rightsPath, const String8& contentPath); + + /** + * Retrieves the mime type embedded inside the original content + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] path the path of the protected content + * @return String8 + * Returns mime-type of the original content, such as "video/mpeg" + */ + String8 getOriginalMimeType(int uniqueId, const String8& path); + + /** + * Retrieves the type of the protected object (content, rights, etc..) + * using specified path or mimetype. At least one parameter should be non null + * to retrieve DRM object type + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, const String8& path, const String8& mimeType); + + /** + * Check whether the given content has valid rights or not + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] path Path of the protected content + * @param[in] action Action to perform (Action::DEFAULT, Action::PLAY, etc) + * @return the status of the rights for the protected content, + * such as RightsStatus::RIGHTS_VALID, RightsStatus::RIGHTS_EXPIRED, etc. + */ + int checkRightsStatus(int uniqueId, const String8& path, int action); + + /** + * 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] uniqueId Unique identifier for a session + * @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 + */ + status_t consumeRights(int uniqueId, DecryptHandle* decryptHandle, int action, bool reserve); + + /** + * Informs the DRM engine about the playback actions performed on the DRM files. + * + * @param[in] uniqueId Unique identifier for a session + * @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( + int uniqueId, DecryptHandle* decryptHandle, int playbackStatus, int position); + + /** + * Validates whether an action on the DRM content is allowed or not. + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] path Path of the protected content + * @param[in] action Action to validate (Action::PLAY, Action::TRANSFER, etc) + * @param[in] description Detailed description of the action + * @return true if the action is allowed. + */ + bool validateAction( + int uniqueId, const String8& path, int action, const ActionDescription& description); + + /** + * Removes the rights associated with the given protected content + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, const String8& path); + + /** + * Removes all the rights information of each plug-in associated with + * DRM framework. Will be used in master reset + * + * @param[in] uniqueId Unique identifier for a session + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t removeAllRights(int uniqueId); + + /** + * This API is for Forward Lock based DRM scheme. + * 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] uniqueId Unique identifier for a session + * @param[in] mimeType Description/MIME type of the input data packet + * @return Return handle for the convert session + */ + int openConvertSession(int uniqueId, const String8& mimeType); + + /** + * Accepts and converts the input data which is part of DRM file. + * 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] uniqueId Unique identifier for a session + * @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 uniqueId, int convertId, const DrmBuffer* inputData); + + /** + * Informs the Drm Agent when there is no more data which need to be converted + * or when an error occurs. 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] uniqueId Unique identifier for a session + * @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 uniqueId, int convertId); + + /** + * Retrieves all DrmSupportInfo instance that native DRM framework can handle. + * This interface is meant to be used by JNI layer + * + * @param[in] uniqueId Unique identifier for a session + * @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 uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray); + + /** + * Open the decrypt session to decrypt the given protected content + * + * @param[in] uniqueId Unique identifier for a session + * @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 + * @return + * Handle for the decryption session + */ + DecryptHandle* openDecryptSession(int uniqueId, int fd, int offset, int length); + + /** + * Close the decrypt session for the given handle + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, DecryptHandle* decryptHandle); + + /** + * Initialize decryption for the given unit of the protected content + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, 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] uniqueId Unique identifier for a session + * @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(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId, + const DrmBuffer* encBuffer, DrmBuffer** decBuffer, DrmBuffer* IV); + + /** + * Finalize decryption for the given unit of the protected content + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId); + + /** + * Reads the specified number of bytes from an open DRM file. + * + * @param[in] uniqueId Unique identifier for a session + * @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(int uniqueId, DecryptHandle* decryptHandle, + void* buffer, ssize_t numBytes, off_t offset); + + /** + * Notify the event to the registered listener + * + * @param[in] event The event to be notified + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t notify(const DrmInfoEvent& event); + +private: + /** + * Initialize DRM Manager + * load available plug-ins from plugInDirPath + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] plugInDirPath Directory from where to load plug-ins + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t loadPlugIns(int uniqueId, const String8& plugInDirPath); + + /** + * Install new DRM Engine Plug-in at the runtime + * + * @param[in] uniqueId Unique identifier for a session + * @param[in] drmEngine Shared Object(so) File in which DRM Engine defined + * @return status_t + * Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure + */ + status_t installDrmEngine(int uniqueId, const String8& drmEngineFile); + +private: + Mutex mLock; + sp<DrmManagerClient::OnInfoListener> mOnInfoListener; + +private: + static Mutex mMutex; + static sp<IDrmManagerService> mDrmManagerService; + static const sp<IDrmManagerService>& getDrmManagerService(); + static const String8 EMPTY_STRING; +}; + +}; + +#endif /* __DRM_MANAGER_CLIENT_IMPL_H__ */ + |