HDCP.cpp revision 59451f8ced48874427ff1550391c4f3cd2ba2e35
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17//#define LOG_NDEBUG 0 18#define LOG_TAG "HDCP" 19#include <utils/Log.h> 20 21#include "HDCP.h" 22 23#include <media/stagefright/foundation/ADebug.h> 24 25#include <dlfcn.h> 26 27namespace android { 28 29HDCP::HDCP() 30 : mLibHandle(NULL), 31 mHDCPModule(NULL) { 32 mLibHandle = dlopen("libstagefright_hdcp.so", RTLD_NOW); 33 34 if (mLibHandle == NULL) { 35 ALOGE("Unable to locate libstagefright_hdcp.so"); 36 return; 37 } 38 39 typedef HDCPModule *(*CreateHDCPModuleFunc)( 40 void *, HDCPModule::ObserverFunc); 41 42 CreateHDCPModuleFunc createHDCPModule = 43 (CreateHDCPModuleFunc)dlsym(mLibHandle, "createHDCPModule"); 44 45 if (createHDCPModule == NULL) { 46 ALOGE("Unable to find symbol 'createHDCPModule'."); 47 } else if ((mHDCPModule = createHDCPModule( 48 this, &HDCP::ObserveWrapper)) == NULL) { 49 ALOGE("createHDCPModule failed."); 50 } 51} 52 53HDCP::~HDCP() { 54 if (mHDCPModule != NULL) { 55 delete mHDCPModule; 56 mHDCPModule = NULL; 57 } 58 59 if (mLibHandle != NULL) { 60 dlclose(mLibHandle); 61 mLibHandle = NULL; 62 } 63} 64 65status_t HDCP::setObserver(const sp<IHDCPObserver> &observer) { 66 if (mHDCPModule == NULL) { 67 return NO_INIT; 68 } 69 70 mObserver = observer; 71 72 return OK; 73} 74 75status_t HDCP::initAsync(const char *host, unsigned port) { 76 if (mHDCPModule == NULL) { 77 return NO_INIT; 78 } 79 80 return mHDCPModule->initAsync(host, port); 81} 82 83status_t HDCP::shutdownAsync() { 84 if (mHDCPModule == NULL) { 85 return NO_INIT; 86 } 87 88 return mHDCPModule->shutdownAsync(); 89} 90 91status_t HDCP::encrypt( 92 const void *inData, size_t size, uint32_t streamCTR, 93 uint64_t *outInputCTR, void *outData) { 94 if (mHDCPModule == NULL) { 95 *outInputCTR = 0; 96 97 return NO_INIT; 98 } 99 100 return mHDCPModule->encrypt(inData, size, streamCTR, outInputCTR, outData); 101} 102 103// static 104void HDCP::ObserveWrapper(void *me, int msg, int ext1, int ext2) { 105 static_cast<HDCP *>(me)->observe(msg, ext1, ext2); 106} 107 108void HDCP::observe(int msg, int ext1, int ext2) { 109 if (mObserver != NULL) { 110 mObserver->notify(msg, ext1, ext2, NULL /* obj */); 111 } 112} 113 114} // namespace android 115 116