drm/libdrmframework/DrmManagerClientImpl.cpp - android_frameworks_av - Gitiles

 /*
  * 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.
  */

 //#define LOG_NDEBUG 0
 #define LOG_TAG "DrmManagerClientImpl(Native)"
 #include <utils/Log.h>

 #include <utils/String8.h>
 #include <utils/Vector.h>
 #include <binder/IServiceManager.h>
 #include <cutils/properties.h>

 #include "DrmManagerClientImpl.h"
 #include "NoOpDrmManagerClientImpl.h"

 using namespace android;

 #define INVALID_VALUE (-1)

 Mutex DrmManagerClientImpl::sMutex;
 sp<IDrmManagerService> DrmManagerClientImpl::sDrmManagerService;
 sp<DrmManagerClientImpl::DeathNotifier> DrmManagerClientImpl::sDeathNotifier;
 const String8 DrmManagerClientImpl::EMPTY_STRING("");

 DrmManagerClientImpl* DrmManagerClientImpl::create(
         int* pUniqueId, bool isNative) {
     sp<IDrmManagerService> service = getDrmManagerService();
     if (service != NULL) {
         *pUniqueId = getDrmManagerService()->addUniqueId(isNative);
         return new DrmManagerClientImpl();
     }
     return new NoOpDrmManagerClientImpl();
 }

 void DrmManagerClientImpl::remove(int uniqueId) {
     getDrmManagerService()->removeUniqueId(uniqueId);
 }

 const sp<IDrmManagerService>& DrmManagerClientImpl::getDrmManagerService() {
     Mutex::Autolock lock(sMutex);
     if (NULL == sDrmManagerService.get()) {
         char value[PROPERTY_VALUE_MAX];
         if (property_get("drm.service.enabled", value, NULL) == 0) {
             // Drm is undefined for this device
             return sDrmManagerService;
         }

         sp<IServiceManager> sm = defaultServiceManager();
         sp<IBinder> binder;
         do {
             binder = sm->getService(String16("drm.drmManager"));
             if (binder != 0) {
                 break;
             }
             ALOGW("DrmManagerService not published, waiting...");
             struct timespec reqt;
             reqt.tv_sec  = 0;
             reqt.tv_nsec = 500000000; //0.5 sec
             nanosleep(&reqt, NULL);
         } while (true);
         if (NULL == sDeathNotifier.get()) {
             sDeathNotifier = new DeathNotifier();
         }
         binder->linkToDeath(sDeathNotifier);
         sDrmManagerService = interface_cast<IDrmManagerService>(binder);
     }
     return sDrmManagerService;
 }

 void DrmManagerClientImpl::addClient(int uniqueId) {
     getDrmManagerService()->addClient(uniqueId);
 }

 void DrmManagerClientImpl::removeClient(int uniqueId) {
     getDrmManagerService()->removeClient(uniqueId);
 }

 status_t DrmManagerClientImpl::setOnInfoListener(
             int uniqueId,
             const sp<DrmManagerClient::OnInfoListener>& infoListener) {
     Mutex::Autolock _l(mLock);
     mOnInfoListener = infoListener;
     return getDrmManagerService()->setDrmServiceListener(uniqueId,
             (NULL != infoListener.get()) ? this : NULL);
 }

 DrmConstraints* DrmManagerClientImpl::getConstraints(
         int uniqueId, const String8* path, const int action) {
     DrmConstraints *drmConstraints = NULL;
     if ((NULL != path) && (EMPTY_STRING != *path)) {
         drmConstraints =
             getDrmManagerService()->getConstraints(uniqueId, path, action);
     }
     return drmConstraints;
 }

 DrmMetadata* DrmManagerClientImpl::getMetadata(int uniqueId, const String8* path) {
     DrmMetadata *drmMetadata = NULL;
     if ((NULL != path) && (EMPTY_STRING != *path)) {
         drmMetadata = getDrmManagerService()->getMetadata(uniqueId, path);
     }
     return drmMetadata;
 }

 bool DrmManagerClientImpl::canHandle(
         int uniqueId, const String8& path, const String8& mimeType) {
     bool retCode = false;
     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
         retCode = getDrmManagerService()->canHandle(uniqueId, path, mimeType);
     }
     return retCode;
 }

 DrmInfoStatus* DrmManagerClientImpl::processDrmInfo(
         int uniqueId, const DrmInfo* drmInfo) {
     DrmInfoStatus *drmInfoStatus = NULL;
     if (NULL != drmInfo) {
         drmInfoStatus = getDrmManagerService()->processDrmInfo(uniqueId, drmInfo);
     }
     return drmInfoStatus;
 }

 DrmInfo* DrmManagerClientImpl::acquireDrmInfo(
         int uniqueId, const DrmInfoRequest* drmInfoRequest) {
     DrmInfo* drmInfo = NULL;
     if (NULL != drmInfoRequest) {
         drmInfo = getDrmManagerService()->acquireDrmInfo(uniqueId, drmInfoRequest);
     }
     return drmInfo;
 }

 status_t DrmManagerClientImpl::saveRights(int uniqueId, const DrmRights& drmRights,
             const String8& rightsPath, const String8& contentPath) {
     return getDrmManagerService()->saveRights(
                 uniqueId, drmRights, rightsPath, contentPath);
 }

 String8 DrmManagerClientImpl::getOriginalMimeType(
         int uniqueId, const String8& path, int fd) {
     String8 mimeType = EMPTY_STRING;
     if (EMPTY_STRING != path) {
         mimeType = getDrmManagerService()->getOriginalMimeType(uniqueId, path, fd);
     }
     return mimeType;
 }

 int DrmManagerClientImpl::getDrmObjectType(
             int uniqueId, const String8& path, const String8& mimeType) {
     int drmOjectType = DrmObjectType::UNKNOWN;
     if ((EMPTY_STRING != path) || (EMPTY_STRING != mimeType)) {
          drmOjectType =
              getDrmManagerService()->getDrmObjectType(uniqueId, path, mimeType);
     }
     return drmOjectType;
 }

 int DrmManagerClientImpl::checkRightsStatus(
             int uniqueId, const String8& path, int action) {
     int rightsStatus = RightsStatus::RIGHTS_INVALID;
     if (EMPTY_STRING != path) {
         rightsStatus =
             getDrmManagerService()->checkRightsStatus(uniqueId, path, action);
     }
     return rightsStatus;
 }

 status_t DrmManagerClientImpl::consumeRights(
             int uniqueId, sp<DecryptHandle> &decryptHandle,
             int action, bool reserve) {
     status_t status = DRM_ERROR_UNKNOWN;
     if (NULL != decryptHandle.get()) {
         status = getDrmManagerService()->consumeRights(
                 uniqueId, decryptHandle, action, reserve);
     }
     return status;
 }

 status_t DrmManagerClientImpl::setPlaybackStatus(
             int uniqueId, sp<DecryptHandle> &decryptHandle,
             int playbackStatus, int64_t position) {
     status_t status = DRM_ERROR_UNKNOWN;
     if (NULL != decryptHandle.get()) {
         status = getDrmManagerService()->setPlaybackStatus(
                 uniqueId, decryptHandle, playbackStatus, position);
     }
     return status;
 }

 bool DrmManagerClientImpl::validateAction(
             int uniqueId, const String8& path,
             int action, const ActionDescription& description) {
     bool retCode = false;
     if (EMPTY_STRING != path) {
         retCode = getDrmManagerService()->validateAction(
                 uniqueId, path, action, description);
     }
     return retCode;
 }

 status_t DrmManagerClientImpl::removeRights(int uniqueId, const String8& path) {
     status_t status = DRM_ERROR_UNKNOWN;
     if (EMPTY_STRING != path) {
         status = getDrmManagerService()->removeRights(uniqueId, path);
     }
     return status;
 }

 status_t DrmManagerClientImpl::removeAllRights(int uniqueId) {
     return getDrmManagerService()->removeAllRights(uniqueId);
 }

 int DrmManagerClientImpl::openConvertSession(
         int uniqueId, const String8& mimeType) {
     int retCode = INVALID_VALUE;
     if (EMPTY_STRING != mimeType) {
         retCode = getDrmManagerService()->openConvertSession(uniqueId, mimeType);
     }
     return retCode;
 }

 DrmConvertedStatus* DrmManagerClientImpl::convertData(
             int uniqueId, int convertId, const DrmBuffer* inputData) {
     DrmConvertedStatus* drmConvertedStatus = NULL;
     if (NULL != inputData) {
          drmConvertedStatus =
              getDrmManagerService()->convertData(uniqueId, convertId, inputData);
     }
     return drmConvertedStatus;
 }

 DrmConvertedStatus* DrmManagerClientImpl::closeConvertSession(
         int uniqueId, int convertId) {
     return getDrmManagerService()->closeConvertSession(uniqueId, convertId);
 }

 status_t DrmManagerClientImpl::getAllSupportInfo(
             int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray) {
     status_t status = DRM_ERROR_UNKNOWN;
     if ((NULL != drmSupportInfoArray) && (NULL != length)) {
         status = getDrmManagerService()->getAllSupportInfo(
                 uniqueId, length, drmSupportInfoArray);
     }
     return status;
 }

 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
             int uniqueId, int fd, off64_t offset,
             off64_t length, const char* mime) {

     return getDrmManagerService()->openDecryptSession(
                 uniqueId, fd, offset, length, mime);
 }

 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
         int uniqueId, const char* uri, const char* mime) {

     sp<DecryptHandle> handle;
     if (NULL != uri) {
         handle = getDrmManagerService()->openDecryptSession(uniqueId, uri, mime);
     }
     return handle;
 }

 sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
             int uniqueId, const DrmBuffer& buf, const String8& mimeType) {
     return getDrmManagerService()->openDecryptSession(uniqueId, buf, mimeType);
 }

 status_t DrmManagerClientImpl::closeDecryptSession(
         int uniqueId, sp<DecryptHandle> &decryptHandle) {
     status_t status = DRM_ERROR_UNKNOWN;
     if (NULL != decryptHandle.get()) {
         status = getDrmManagerService()->closeDecryptSession(
                 uniqueId, decryptHandle);
     }
     return status;
 }

 status_t DrmManagerClientImpl::initializeDecryptUnit(
         int uniqueId, sp<DecryptHandle> &decryptHandle,
         int decryptUnitId, const DrmBuffer* headerInfo) {
     status_t status = DRM_ERROR_UNKNOWN;
     if ((NULL != decryptHandle.get()) && (NULL != headerInfo)) {
         status = getDrmManagerService()->initializeDecryptUnit(
                 uniqueId, decryptHandle, decryptUnitId, headerInfo);
     }
     return status;
 }

 status_t DrmManagerClientImpl::decrypt(
         int uniqueId, sp<DecryptHandle> &decryptHandle,
         int decryptUnitId, const DrmBuffer* encBuffer,
         DrmBuffer** decBuffer, DrmBuffer* IV) {
     status_t status = DRM_ERROR_UNKNOWN;
     if ((NULL != decryptHandle.get()) && (NULL != encBuffer)
         && (NULL != decBuffer) && (NULL != *decBuffer)) {
         status = getDrmManagerService()->decrypt(
                 uniqueId, decryptHandle, decryptUnitId,
                 encBuffer, decBuffer, IV);
     }
     return status;
 }

 status_t DrmManagerClientImpl::finalizeDecryptUnit(
             int uniqueId, sp<DecryptHandle> &decryptHandle, int decryptUnitId) {
     status_t status = DRM_ERROR_UNKNOWN;
     if (NULL != decryptHandle.get()) {
         status = getDrmManagerService()->finalizeDecryptUnit(
                     uniqueId, decryptHandle, decryptUnitId);
     }
     return status;
 }

 ssize_t DrmManagerClientImpl::pread(int uniqueId, sp<DecryptHandle> &decryptHandle,
             void* buffer, ssize_t numBytes, off64_t offset) {
     ssize_t retCode = INVALID_VALUE;
     if ((NULL != decryptHandle.get()) && (NULL != buffer) && (0 < numBytes)) {
         retCode = getDrmManagerService()->pread(
                 uniqueId, decryptHandle, buffer, numBytes, offset);
     }
     return retCode;
 }

 status_t DrmManagerClientImpl::notify(const DrmInfoEvent& event) {
     if (NULL != mOnInfoListener.get()) {
         Mutex::Autolock _l(mLock);
         sp<DrmManagerClient::OnInfoListener> listener = mOnInfoListener;
         listener->onInfo(event);
     }
     return DRM_NO_ERROR;
 }

 DrmManagerClientImpl::DeathNotifier::~DeathNotifier() {
     Mutex::Autolock lock(sMutex);
     if (NULL != sDrmManagerService.get()) {
         IInterface::asBinder(sDrmManagerService)->unlinkToDeath(this);
     }
 }

 void DrmManagerClientImpl::DeathNotifier::binderDied(
             const wp<IBinder>& /* who */) {
     Mutex::Autolock lock(sMutex);
     DrmManagerClientImpl::sDrmManagerService.clear();
     ALOGW("DrmManager server died!");
 }
	/*
	* 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.
	*/

	//#define LOG_NDEBUG 0
	#define LOG_TAG "DrmManagerClientImpl(Native)"
	#include <utils/Log.h>

	#include <utils/String8.h>
	#include <utils/Vector.h>
	#include <binder/IServiceManager.h>
	#include <cutils/properties.h>

	#include "DrmManagerClientImpl.h"
	#include "NoOpDrmManagerClientImpl.h"

	using namespace android;

	#define INVALID_VALUE (-1)

	Mutex DrmManagerClientImpl::sMutex;
	sp<IDrmManagerService> DrmManagerClientImpl::sDrmManagerService;
	sp<DrmManagerClientImpl::DeathNotifier> DrmManagerClientImpl::sDeathNotifier;
	const String8 DrmManagerClientImpl::EMPTY_STRING("");

	DrmManagerClientImpl* DrmManagerClientImpl::create(
	int* pUniqueId, bool isNative) {
	sp<IDrmManagerService> service = getDrmManagerService();
	if (service != NULL) {
	*pUniqueId = getDrmManagerService()->addUniqueId(isNative);
	return new DrmManagerClientImpl();
	}
	return new NoOpDrmManagerClientImpl();
	}

	void DrmManagerClientImpl::remove(int uniqueId) {
	getDrmManagerService()->removeUniqueId(uniqueId);
	}

	const sp<IDrmManagerService>& DrmManagerClientImpl::getDrmManagerService() {
	Mutex::Autolock lock(sMutex);
	if (NULL == sDrmManagerService.get()) {
	char value[PROPERTY_VALUE_MAX];
	if (property_get("drm.service.enabled", value, NULL) == 0) {
	// Drm is undefined for this device
	return sDrmManagerService;
	}

	sp<IServiceManager> sm = defaultServiceManager();
	sp<IBinder> binder;
	do {
	binder = sm->getService(String16("drm.drmManager"));
	if (binder != 0) {
	break;
	}
	ALOGW("DrmManagerService not published, waiting...");
	struct timespec reqt;
	reqt.tv_sec = 0;
	reqt.tv_nsec = 500000000; //0.5 sec
	nanosleep(&reqt, NULL);
	} while (true);
	if (NULL == sDeathNotifier.get()) {
	sDeathNotifier = new DeathNotifier();
	}
	binder->linkToDeath(sDeathNotifier);
	sDrmManagerService = interface_cast<IDrmManagerService>(binder);
	}
	return sDrmManagerService;
	}

	void DrmManagerClientImpl::addClient(int uniqueId) {
	getDrmManagerService()->addClient(uniqueId);
	}

	void DrmManagerClientImpl::removeClient(int uniqueId) {
	getDrmManagerService()->removeClient(uniqueId);
	}

	status_t DrmManagerClientImpl::setOnInfoListener(
	int uniqueId,
	const sp<DrmManagerClient::OnInfoListener>& infoListener) {
	Mutex::Autolock _l(mLock);
	mOnInfoListener = infoListener;
	return getDrmManagerService()->setDrmServiceListener(uniqueId,
	(NULL != infoListener.get()) ? this : NULL);
	}

	DrmConstraints* DrmManagerClientImpl::getConstraints(
	int uniqueId, const String8* path, const int action) {
	DrmConstraints *drmConstraints = NULL;
	if ((NULL != path) && (EMPTY_STRING != *path)) {
	drmConstraints =
	getDrmManagerService()->getConstraints(uniqueId, path, action);
	}
	return drmConstraints;
	}

	DrmMetadata* DrmManagerClientImpl::getMetadata(int uniqueId, const String8* path) {
	DrmMetadata *drmMetadata = NULL;
	if ((NULL != path) && (EMPTY_STRING != *path)) {
	drmMetadata = getDrmManagerService()->getMetadata(uniqueId, path);
	}
	return drmMetadata;
	}

	bool DrmManagerClientImpl::canHandle(
	int uniqueId, const String8& path, const String8& mimeType) {
	bool retCode = false;
	if ((EMPTY_STRING != path) \|\| (EMPTY_STRING != mimeType)) {
	retCode = getDrmManagerService()->canHandle(uniqueId, path, mimeType);
	}
	return retCode;
	}

	DrmInfoStatus* DrmManagerClientImpl::processDrmInfo(
	int uniqueId, const DrmInfo* drmInfo) {
	DrmInfoStatus *drmInfoStatus = NULL;
	if (NULL != drmInfo) {
	drmInfoStatus = getDrmManagerService()->processDrmInfo(uniqueId, drmInfo);
	}
	return drmInfoStatus;
	}

	DrmInfo* DrmManagerClientImpl::acquireDrmInfo(
	int uniqueId, const DrmInfoRequest* drmInfoRequest) {
	DrmInfo* drmInfo = NULL;
	if (NULL != drmInfoRequest) {
	drmInfo = getDrmManagerService()->acquireDrmInfo(uniqueId, drmInfoRequest);
	}
	return drmInfo;
	}

	status_t DrmManagerClientImpl::saveRights(int uniqueId, const DrmRights& drmRights,
	const String8& rightsPath, const String8& contentPath) {
	return getDrmManagerService()->saveRights(
	uniqueId, drmRights, rightsPath, contentPath);
	}

	String8 DrmManagerClientImpl::getOriginalMimeType(
	int uniqueId, const String8& path, int fd) {
	String8 mimeType = EMPTY_STRING;
	if (EMPTY_STRING != path) {
	mimeType = getDrmManagerService()->getOriginalMimeType(uniqueId, path, fd);
	}
	return mimeType;
	}

	int DrmManagerClientImpl::getDrmObjectType(
	int uniqueId, const String8& path, const String8& mimeType) {
	int drmOjectType = DrmObjectType::UNKNOWN;
	if ((EMPTY_STRING != path) \|\| (EMPTY_STRING != mimeType)) {
	drmOjectType =
	getDrmManagerService()->getDrmObjectType(uniqueId, path, mimeType);
	}
	return drmOjectType;
	}

	int DrmManagerClientImpl::checkRightsStatus(
	int uniqueId, const String8& path, int action) {
	int rightsStatus = RightsStatus::RIGHTS_INVALID;
	if (EMPTY_STRING != path) {
	rightsStatus =
	getDrmManagerService()->checkRightsStatus(uniqueId, path, action);
	}
	return rightsStatus;
	}

	status_t DrmManagerClientImpl::consumeRights(
	int uniqueId, sp<DecryptHandle> &decryptHandle,
	int action, bool reserve) {
	status_t status = DRM_ERROR_UNKNOWN;
	if (NULL != decryptHandle.get()) {
	status = getDrmManagerService()->consumeRights(
	uniqueId, decryptHandle, action, reserve);
	}
	return status;
	}

	status_t DrmManagerClientImpl::setPlaybackStatus(
	int uniqueId, sp<DecryptHandle> &decryptHandle,
	int playbackStatus, int64_t position) {
	status_t status = DRM_ERROR_UNKNOWN;
	if (NULL != decryptHandle.get()) {
	status = getDrmManagerService()->setPlaybackStatus(
	uniqueId, decryptHandle, playbackStatus, position);
	}
	return status;
	}

	bool DrmManagerClientImpl::validateAction(
	int uniqueId, const String8& path,
	int action, const ActionDescription& description) {
	bool retCode = false;
	if (EMPTY_STRING != path) {
	retCode = getDrmManagerService()->validateAction(
	uniqueId, path, action, description);
	}
	return retCode;
	}

	status_t DrmManagerClientImpl::removeRights(int uniqueId, const String8& path) {
	status_t status = DRM_ERROR_UNKNOWN;
	if (EMPTY_STRING != path) {
	status = getDrmManagerService()->removeRights(uniqueId, path);
	}
	return status;
	}

	status_t DrmManagerClientImpl::removeAllRights(int uniqueId) {
	return getDrmManagerService()->removeAllRights(uniqueId);
	}

	int DrmManagerClientImpl::openConvertSession(
	int uniqueId, const String8& mimeType) {
	int retCode = INVALID_VALUE;
	if (EMPTY_STRING != mimeType) {
	retCode = getDrmManagerService()->openConvertSession(uniqueId, mimeType);
	}
	return retCode;
	}

	DrmConvertedStatus* DrmManagerClientImpl::convertData(
	int uniqueId, int convertId, const DrmBuffer* inputData) {
	DrmConvertedStatus* drmConvertedStatus = NULL;
	if (NULL != inputData) {
	drmConvertedStatus =
	getDrmManagerService()->convertData(uniqueId, convertId, inputData);
	}
	return drmConvertedStatus;
	}

	DrmConvertedStatus* DrmManagerClientImpl::closeConvertSession(
	int uniqueId, int convertId) {
	return getDrmManagerService()->closeConvertSession(uniqueId, convertId);
	}

	status_t DrmManagerClientImpl::getAllSupportInfo(
	int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray) {
	status_t status = DRM_ERROR_UNKNOWN;
	if ((NULL != drmSupportInfoArray) && (NULL != length)) {
	status = getDrmManagerService()->getAllSupportInfo(
	uniqueId, length, drmSupportInfoArray);
	}
	return status;
	}

	sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
	int uniqueId, int fd, off64_t offset,
	off64_t length, const char* mime) {

	return getDrmManagerService()->openDecryptSession(
	uniqueId, fd, offset, length, mime);
	}

	sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
	int uniqueId, const char* uri, const char* mime) {

	sp<DecryptHandle> handle;
	if (NULL != uri) {
	handle = getDrmManagerService()->openDecryptSession(uniqueId, uri, mime);
	}
	return handle;
	}

	sp<DecryptHandle> DrmManagerClientImpl::openDecryptSession(
	int uniqueId, const DrmBuffer& buf, const String8& mimeType) {
	return getDrmManagerService()->openDecryptSession(uniqueId, buf, mimeType);
	}

	status_t DrmManagerClientImpl::closeDecryptSession(
	int uniqueId, sp<DecryptHandle> &decryptHandle) {
	status_t status = DRM_ERROR_UNKNOWN;
	if (NULL != decryptHandle.get()) {
	status = getDrmManagerService()->closeDecryptSession(
	uniqueId, decryptHandle);
	}
	return status;
	}

	status_t DrmManagerClientImpl::initializeDecryptUnit(
	int uniqueId, sp<DecryptHandle> &decryptHandle,
	int decryptUnitId, const DrmBuffer* headerInfo) {
	status_t status = DRM_ERROR_UNKNOWN;
	if ((NULL != decryptHandle.get()) && (NULL != headerInfo)) {
	status = getDrmManagerService()->initializeDecryptUnit(
	uniqueId, decryptHandle, decryptUnitId, headerInfo);
	}
	return status;
	}

	status_t DrmManagerClientImpl::decrypt(
	int uniqueId, sp<DecryptHandle> &decryptHandle,
	int decryptUnitId, const DrmBuffer* encBuffer,
	DrmBuffer** decBuffer, DrmBuffer* IV) {
	status_t status = DRM_ERROR_UNKNOWN;
	if ((NULL != decryptHandle.get()) && (NULL != encBuffer)
	&& (NULL != decBuffer) && (NULL != *decBuffer)) {
	status = getDrmManagerService()->decrypt(
	uniqueId, decryptHandle, decryptUnitId,
	encBuffer, decBuffer, IV);
	}
	return status;
	}

	status_t DrmManagerClientImpl::finalizeDecryptUnit(
	int uniqueId, sp<DecryptHandle> &decryptHandle, int decryptUnitId) {
	status_t status = DRM_ERROR_UNKNOWN;
	if (NULL != decryptHandle.get()) {
	status = getDrmManagerService()->finalizeDecryptUnit(
	uniqueId, decryptHandle, decryptUnitId);
	}
	return status;
	}

	ssize_t DrmManagerClientImpl::pread(int uniqueId, sp<DecryptHandle> &decryptHandle,
	void* buffer, ssize_t numBytes, off64_t offset) {
	ssize_t retCode = INVALID_VALUE;
	if ((NULL != decryptHandle.get()) && (NULL != buffer) && (0 < numBytes)) {
	retCode = getDrmManagerService()->pread(
	uniqueId, decryptHandle, buffer, numBytes, offset);
	}
	return retCode;
	}

	status_t DrmManagerClientImpl::notify(const DrmInfoEvent& event) {
	if (NULL != mOnInfoListener.get()) {
	Mutex::Autolock _l(mLock);
	sp<DrmManagerClient::OnInfoListener> listener = mOnInfoListener;
	listener->onInfo(event);
	}
	return DRM_NO_ERROR;
	}

	DrmManagerClientImpl::DeathNotifier::~DeathNotifier() {
	Mutex::Autolock lock(sMutex);
	if (NULL != sDrmManagerService.get()) {
	IInterface::asBinder(sDrmManagerService)->unlinkToDeath(this);
	}
	}

	void DrmManagerClientImpl::DeathNotifier::binderDied(
	const wp<IBinder>& /* who */) {
	Mutex::Autolock lock(sMutex);
	DrmManagerClientImpl::sDrmManagerService.clear();
	ALOGW("DrmManager server died!");
	}