| /* |
| * Copyright (C) 2012 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 "HDCP" |
| #include <utils/Log.h> |
| |
| #include "HDCP.h" |
| |
| #include <media/stagefright/foundation/ADebug.h> |
| |
| #include <dlfcn.h> |
| |
| namespace android { |
| |
| HDCP::HDCP(bool createEncryptionModule) |
| : mIsEncryptionModule(createEncryptionModule), |
| mLibHandle(NULL), |
| mHDCPModule(NULL) { |
| mLibHandle = dlopen("libstagefright_hdcp.so", RTLD_NOW); |
| |
| if (mLibHandle == NULL) { |
| ALOGE("Unable to locate libstagefright_hdcp.so"); |
| return; |
| } |
| |
| typedef HDCPModule *(*CreateHDCPModuleFunc)( |
| void *, HDCPModule::ObserverFunc); |
| |
| CreateHDCPModuleFunc createHDCPModule = |
| mIsEncryptionModule |
| ? (CreateHDCPModuleFunc)dlsym(mLibHandle, "createHDCPModule") |
| : (CreateHDCPModuleFunc)dlsym( |
| mLibHandle, "createHDCPModuleForDecryption"); |
| |
| if (createHDCPModule == NULL) { |
| ALOGE("Unable to find symbol 'createHDCPModule'."); |
| } else if ((mHDCPModule = createHDCPModule( |
| this, &HDCP::ObserveWrapper)) == NULL) { |
| ALOGE("createHDCPModule failed."); |
| } |
| } |
| |
| HDCP::~HDCP() { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mHDCPModule != NULL) { |
| delete mHDCPModule; |
| mHDCPModule = NULL; |
| } |
| |
| if (mLibHandle != NULL) { |
| dlclose(mLibHandle); |
| mLibHandle = NULL; |
| } |
| } |
| |
| status_t HDCP::setObserver(const sp<IHDCPObserver> &observer) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mHDCPModule == NULL) { |
| return NO_INIT; |
| } |
| |
| mObserver = observer; |
| |
| return OK; |
| } |
| |
| status_t HDCP::initAsync(const char *host, unsigned port) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mHDCPModule == NULL) { |
| return NO_INIT; |
| } |
| |
| return mHDCPModule->initAsync(host, port); |
| } |
| |
| status_t HDCP::shutdownAsync() { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mHDCPModule == NULL) { |
| return NO_INIT; |
| } |
| |
| return mHDCPModule->shutdownAsync(); |
| } |
| |
| uint32_t HDCP::getCaps() { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mHDCPModule == NULL) { |
| return NO_INIT; |
| } |
| |
| // TO-DO: |
| // Only support HDCP_CAPS_ENCRYPT (byte-array to byte-array) for now. |
| // use mHDCPModule->getCaps() when the HDCP libraries get updated. |
| //return mHDCPModule->getCaps(); |
| return HDCPModule::HDCP_CAPS_ENCRYPT; |
| } |
| |
| status_t HDCP::encrypt( |
| const void *inData, size_t size, uint32_t streamCTR, |
| uint64_t *outInputCTR, void *outData) { |
| Mutex::Autolock autoLock(mLock); |
| |
| CHECK(mIsEncryptionModule); |
| |
| if (mHDCPModule == NULL) { |
| *outInputCTR = 0; |
| |
| return NO_INIT; |
| } |
| |
| return mHDCPModule->encrypt(inData, size, streamCTR, outInputCTR, outData); |
| } |
| |
| status_t HDCP::encryptNative( |
| const sp<GraphicBuffer> &graphicBuffer, |
| size_t offset, size_t size, uint32_t streamCTR, |
| uint64_t *outInputCTR, void *outData) { |
| Mutex::Autolock autoLock(mLock); |
| |
| CHECK(mIsEncryptionModule); |
| |
| if (mHDCPModule == NULL) { |
| *outInputCTR = 0; |
| |
| return NO_INIT; |
| } |
| |
| return mHDCPModule->encryptNative(graphicBuffer->handle, |
| offset, size, streamCTR, outInputCTR, outData); |
| } |
| |
| status_t HDCP::decrypt( |
| const void *inData, size_t size, |
| uint32_t streamCTR, uint64_t outInputCTR, void *outData) { |
| Mutex::Autolock autoLock(mLock); |
| |
| CHECK(!mIsEncryptionModule); |
| |
| if (mHDCPModule == NULL) { |
| return NO_INIT; |
| } |
| |
| return mHDCPModule->decrypt(inData, size, streamCTR, outInputCTR, outData); |
| } |
| |
| // static |
| void HDCP::ObserveWrapper(void *me, int msg, int ext1, int ext2) { |
| static_cast<HDCP *>(me)->observe(msg, ext1, ext2); |
| } |
| |
| void HDCP::observe(int msg, int ext1, int ext2) { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mObserver != NULL) { |
| mObserver->notify(msg, ext1, ext2, NULL /* obj */); |
| } |
| } |
| |
| } // namespace android |
| |